JP7019211B1 - Simultaneous cold and hot temperature control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold / hot simultaneous temperature adjusting device capable of normally heating a second heat exchange fluid without executing a cooling process of the first heat exchange fluid.
SOLUTION: When the first condition of cooling the heat medium liquid Wc and heating the heat medium liquid Wh is satisfied, the inflow of the heat medium liquid W3 into the cascade capacitor 12 is restricted and the temperature is low. The first control mode in which the heat medium liquid Wc is cooled by the side refrigeration circuit 2C and the heat medium liquid Wh is heated by the high temperature side refrigeration circuit 2H, and the heat medium liquid Wh is heated without the need for cooling the heat medium liquid Wc. When the second condition of the above is satisfied, the low temperature side refrigerating circuit 2C is stopped while allowing the heat medium liquid W3 to flow into the cascade capacitor 12, and the heat medium liquid Wh is heated by the high temperature side refrigerating circuit 2H. It is configured to be controllable by the second control mode for executing the above.
[Selection diagram] Fig. 1

Description

The present invention makes it possible to heat the second heat exchange fluid supplied to the heating target by the high temperature side refrigeration circuit while cooling the first heat exchange fluid supplied to the cooling target with the multiple refrigeration cycle by the low temperature side refrigeration circuit. It relates to a configured cold / hot simultaneous temperature control device.

The invention of a heat pump type hot water supply device (hereinafter, also simply referred to as “hot water supply device”) as this kind of simultaneous cooling / temperature adjusting device is disclosed in the following patent documents. This hot water supply device includes a first refrigerant in the low-stage side refrigerant circuit (hereinafter, also referred to as a "low-stage side refrigerant" in the "low-stage side circuit") and a second refrigerant in the high-stage side refrigerant circuit. It is equipped with a dual refrigeration cycle configured so that the refrigerant (hereinafter, also referred to as “high-stage side refrigerant” in the “high-stage side circuit”) can exchange heat with each other in the first heat exchanger. In addition, this hot water supply device includes hot water supply operation (operation for the purpose of hot water supply and does not perform heating and cooling), hot water supply and heating operation (hereinafter, also referred to as "hot water supply and heating operation"), hot water supply and cooling operation (hereinafter, "hot water supply and cooling operation"). It is configured to be capable of five types of operations: heating operation (operation for heating and not supplying hot water), and cooling operation (operation for cooling and not supplying hot water).

In this hot water supply device, during the hot water supply operation, all of the low-stage refrigerant discharged from the first compressor passes through the first heat exchanger and the second heat exchanger in this order, and then passes through the outdoor heat exchanger. The refrigerant flow path of the lower stage circuit is switched so as to be sucked into the first compressor. In this case, the temperature of the hot water is raised by being preheated by the second heat exchanger of the low-stage circuit and then heated by the condenser of the high-stage circuit. Further, during the hot water supply and heating operation, in addition to the above-mentioned flow path of the low-stage side refrigerant during the hot water supply operation, outdoor heat exchange occurs after a part of the low-stage side refrigerant discharged from the first compressor passes through the indoor heat exchanger. A refrigerant flow path is formed so as to pass through the vessel and be sucked into the first compressor. At this time, the temperature of the hot water is raised as in the hot water supply operation, and the temperature of the indoor air is raised in the indoor heat exchanger to heat the room.

Further, during the hot water supply / cooling operation, a part of the low-stage refrigerant discharged from the first compressor passes through the first heat exchanger and the second heat exchanger in this order, and then passes through the indoor heat exchanger. 1 The other part of the low-stage refrigerant that is sucked into the compressor and discharged from the first compressor passes through the outdoor heat exchanger and then passes through the indoor heat exchanger and is sucked into the first compressor. The refrigerant flow path is switched to. In this case, the temperature of the hot water is sufficiently raised by being preheated by the second heat exchanger of the low-stage circuit and then heated by the condenser of the high-stage circuit, and at the same time, the indoor heat exchanger is used indoors. The temperature of the air is lowered and the room is cooled.

Further, during the heating operation, the refrigerant flow path is such that all the low-stage refrigerant discharged from the first compressor passes through the indoor heat exchanger and then passes through the outdoor heat exchanger and is sucked into the first compressor. By switching, the temperature of the air in the room is raised in the indoor heat exchanger to heat the room. Further, during the cooling operation, the refrigerant flow path is such that all the low-stage refrigerant discharged from the first compressor passes through the outdoor heat exchanger and then passes through the indoor heat exchanger and is sucked into the first compressor. By switching, the temperature of the air in the room is lowered in the indoor heat exchanger to cool the room. As described above, in this water heater, it is possible to perform heat treatment and / or cooling treatment according to the application by switching the flow path of the low-stage side refrigerant.

Japanese Unexamined Patent Publication No. 4-263758 (Pages 2-4, Fig. 1)

However, like the water heater disclosed in the above patent document, the heat treatment by the high stage side refrigeration circuit (high temperature side refrigeration circuit) and the cooling treatment by the low stage side refrigeration circuit (low temperature side refrigeration circuit) can be executed. Among the cold / hot simultaneous temperature control devices, there are devices that have the following problems. Specifically, in the above-mentioned hot water supply device, hot water supply operation for the purpose of hot water supply only, heating operation and cooling operation for the purpose of air conditioning only, and hot water supply heating operation and hot water supply cooling for the purpose of parallel processing of hot water supply and air conditioning. A configuration that allows driving is adopted.

In this case, in order to heat the specified amount of hot water to the specified temperature within the specified time during the hot water supply operation, hot water heating operation, and hot water cooling operation, the amount required for heating the hot water supply in the condenser of the high-stage circuit is high. It is necessary to evaporate the stage refrigerant in the first heat exchanger, for which a sufficient amount of low stage refrigerant is provided so that a sufficient amount of low stage refrigerant is supplied to the first heat exchanger. It is necessary to discharge from the first compressor. Further, during the hot water supply operation of the above-mentioned hot water supply device, the low-stage side refrigerant required for preheating the hot water supply water in the second heat exchanger and the high-stage side refrigerant required for heating the hot water supply water in the condenser of the high-stage side circuit are used. It is necessary to discharge the low-stage side refrigerant for evaporation in the first heat exchanger from the first compressor, and for that purpose, the low-stage side refrigerant to be discharged from the first compressor must be discharged in the low-stage side circuit. Need to evaporate.

In this regard, in the above-mentioned hot water supply device, the outdoor heat exchanger functions as an evaporator during the hot water supply operation, the hot water supply heating operation, and the heating operation (when the cooling process is not executed), and during the hot water supply cooling operation and the cooling operation (when the hot water supply cooling operation and the cooling operation are performed). A configuration is adopted in which the flow path of the low-stage side refrigerant is switched so that the indoor heat exchanger functions as an evaporator when the cooling process is executed). Therefore, during the hot water supply operation, the outside air in the vicinity of the outdoor heat exchanger is cooled by heat exchange with the low-stage refrigerant by evaporating a large amount of the low-stage refrigerant, but this is an inconvenience caused by the temperature decrease of the outside air. If is not present, the low-stage refrigerant required in the first heat exchanger and the second heat exchanger can continue to be discharged from the first compressor.

However, unlike the above-mentioned hot water supply device, some of the cold and hot simultaneous temperature control devices that can perform heat treatment and cooling treatment have the fluid to be cooled during the cooling treatment on the low temperature side regardless of whether or not the cooling treatment is performed. Configuration that needs to be continuously cooled by the evaporator of the refrigeration circuit (configuration that requires the heat exchanger corresponding to the indoor heat exchanger in the above hot water supply device to continue to function as the evaporator: the outdoor heat exchanger functions as the evaporator There are many devices that have adopted a configuration in which the refrigerant flow path cannot be switched so as to cause the cooling. In the cold / hot simultaneous temperature adjusting device having such a configuration, even if only the heat treatment is to be executed, the cooling treatments that do not need to be executed are executed in parallel.

That is, if compared to the operating state of the above-mentioned hot water supply device, a sufficient amount of low-stage refrigerant to be supplied to the first heat exchanger even when the hot water supply water is heated in a state where indoor cooling is not required. Will be executed in the hot water supply cooling operation to evaporate in the indoor heat exchanger. Therefore, in the cold / temperature simultaneous temperature adjusting device having such a configuration, there is a problem that the temperature of the air in the room is unnecessarily lowered. Further, in a usage environment where the temperature of the indoor air cannot be lowered, it becomes impossible to supply a sufficient amount of the low-stage side refrigerant necessary for heating the hot water supply to the first heat exchanger or the like.

On the other hand, in the hot water supply device disclosed in the above patent document, a sufficient amount of the low-stage side refrigerant is evaporated in the indoor heat exchanger in order to discharge the required amount of the low-stage side refrigerant from the first compressor during the hot water supply cooling operation. There is a need. Therefore, when the cooling set temperature is high during the hot water supply cooling operation (an example when the cooling processing load for cooling to the cooling set temperature is small), all of the low-stage refrigerant in the amount to be discharged from the first compressor. When the air conditioner is evaporated in the indoor heat exchanger, the room may be cooled to a temperature lower than the set cooling temperature. Further, when the cooling is not performed to a temperature lower than the cooling set temperature, the required amount of low-stage refrigerant may not be discharged from the first compressor due to the small amount of evaporation in the indoor heat exchanger. .. Further, even when the room temperature during the hot water supply / cooling operation is low, the required amount of the low-stage refrigerant may not be discharged from the first compressor due to the small amount of evaporation in the indoor heat exchanger.

On the contrary, when the cooling set temperature is low during the hot water supply cooling operation (an example when the cooling processing load for cooling to the cooling set temperature is large), the air should be discharged from the first compressor as described above. Even if all of the low-stage refrigerant is evaporated in the indoor heat exchanger, it may not be possible to sufficiently cool the room to the cooling set temperature. Further, when the air conditioner is cooled to a temperature lower than the set cooling temperature, the amount of evaporation in the indoor heat exchanger becomes large, so that the amount of evaporation exceeds the amount to be supplied to the first heat exchanger and the second heat exchanger. The stage side refrigerant is discharged from the first compressor. As a result, the first heat exchanger evaporates an unnecessarily large amount of the high-stage side refrigerant, and the second heat exchanger preheats the hot water supply water more than necessary. Further, even when the room temperature is high during the hot water supply / cooling operation, the amount of evaporation in the indoor heat exchanger becomes large, so that a large amount of low steps exceeds the amount to be supplied to the first heat exchanger and the second heat exchanger. The side refrigerant is discharged from the first compressor, and as a result, an unnecessarily large amount of the high-stage side refrigerant is evaporated in the first heat exchanger, and the hot water supply water is preheated more than necessary in the second heat exchanger. It will be.

As described above, in the hot water supply device disclosed in the above patent document, the cooling of the indoor air (first heat exchange fluid) and the preheating of the hot water supply water (second heat exchange fluid) in the low stage side circuit (low temperature side refrigeration circuit) are performed. In the hot water supply cooling operation in which the hot water supply water (second heat exchange fluid) is heated in parallel in the high stage side circuit (high temperature side refrigeration circuit), it becomes difficult to cool to the cooling set temperature depending on the usage environment. Or, it may be difficult to heat the specified amount of hot water to the specified temperature within the specified time.

The present invention has been made in view of the problem to be solved, and is a cold / hot simultaneous temperature control device capable of normally heating the second heat exchange fluid without executing the cooling process of the first heat exchange fluid. The main purpose is to provide. In addition, it is also provided to provide a cold / hot simultaneous temperature control device capable of normally cooling the first heat exchange fluid and heating the second heat exchange fluid even in a usage environment where the cooling treatment load of the first heat exchange fluid is small. To provide a cold / hot simultaneous temperature control device capable of normally cooling the first heat exchange fluid and heating the second heat exchange fluid even in a usage environment where the cooling treatment load of the first heat exchange fluid is large. For yet another purpose.

In order to achieve the above object, the cold / hot simultaneous temperature control device according to claim 1 has a low temperature side refrigeration circuit and a high temperature side refrigeration circuit, and has a low temperature side refrigerant in the low temperature side refrigeration circuit and a high temperature side refrigeration circuit. The high temperature side refrigerant is configured to be heat exchangeable in the first heat exchanger, and the first heat exchange fluid supplied to the cooling target is configured to be coolable in the second heat exchanger of the low temperature side refrigeration circuit. A multiple refrigeration cycle configured to allow the second heat exchange fluid supplied to the heating target to be heated in the third heat exchanger of the high temperature side refrigeration circuit, and a cooling set temperature for cooling the first heat exchange fluid. A cold / hot simultaneous temperature control device including a control unit for controlling the operation of the multiple refrigeration cycle according to a set heating temperature for heating the second heat exchange fluid, wherein the low temperature side refrigerant and the high temperature side refrigerant are provided. A three-fluid heat exchanger capable of exchanging heat between the third heat exchange fluids is provided as the first heat exchanger, and a fluid circulation path configured to allow circulation of the third heat exchange fluid, and the above. A third heat exchange fluid and a fourth heat exchanger arranged to enable heat exchange of an external heat source are provided, and the control unit is used for cooling the first heat exchange fluid and heating the second heat exchange fluid. When the first condition of performing both is satisfied, the first heat exchange fluid is cooled by the low temperature side refrigeration circuit while restricting the inflow of the third heat exchange fluid into the first heat exchanger. The first control mode in which the second heat exchange fluid is heated by the high temperature side refrigeration circuit, and the second condition that the second heat exchange fluid is heated without the need for cooling of the first heat exchange fluid. When is satisfied, the second heat exchange fluid by the high temperature side refrigeration circuit is stopped while allowing the inflow of the third heat exchange fluid into the first heat exchanger. The cold / hot simultaneous temperature adjusting device can be controlled by the second control mode for executing the heating of the above.

The cold / hot simultaneous temperature adjusting device according to claim 2 is the first heat exchange fluid that has cooled the cooling target in the cold / hot simultaneous temperature adjusting device according to claim 1, and the external heat source and heat in the fourth heat exchanger. The fifth heat exchanger, which is arranged so that heat can be exchanged between both of the exchanged third heat exchange fluids, the low temperature side refrigerant which has exchanged heat with the high temperature side refrigerant in the first heat exchanger, and the above. A sixth heat exchanger in which both fluids of the third heat exchange fluid that exchange heat with the external heat source in the fourth heat exchanger can exchange heat, and the high temperature side refrigerant in the first heat exchanger. In the first adjusting unit that adjusts the passing amount of the low temperature side refrigerant that has exchanged heat with the second heat exchanger and the passing amount of the low temperature side refrigerant through the sixth heat exchanger, and in the fourth heat exchanger. The amount of passage of the third heat exchange fluid that has exchanged heat with the external heat source through the fifth heat exchanger, the amount of passage of the third heat exchange fluid through the sixth heat exchanger, and the amount of the third heat exchange fluid. The fluid circulation path is provided with a second adjusting unit for adjusting the passing amount of the first heat exchanger, and the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger is the fifth heat. The first flow path that passes through the sixth heat exchanger and does not pass through the first heat exchanger after passing through the exchanger, and the third heat exchange fluid does not pass through the fifth heat exchanger. The second flow path that passes through the sixth heat exchanger and does not pass through the first heat exchanger, and the third heat exchange fluid does not pass through the fifth heat exchanger and the sixth heat exchanger. A third flow path that passes through the first heat exchanger is provided, and the second adjusting unit is a flow rate of the first flow path of the third heat exchange fluid and the second flow path of the third heat exchange fluid. By adjusting the flow rate of the third heat exchange fluid and the flow rate of the third flow path of the third heat exchange fluid, the amount of passage of the third heat exchange fluid through the fifth heat exchanger and the sixth of the third heat exchange fluid. The amount of passage through the heat exchanger and the amount of passage of the third heat exchange fluid through the first heat exchanger are adjustable, and the control unit cools the first heat exchange fluid and exchanges the second heat. When both the fluids are heated, the cooling processing load of the cold / hot simultaneous temperature adjusting device for cooling the first heat exchange fluid to the cooling set temperature causes the second heat exchange fluid to reach the heating set temperature. The third condition that the heat treatment load is smaller than the heat treatment load of the cold temperature simultaneous temperature adjusting device for heating is satisfied, and the temperature of the external heat source is the predetermined first temperature or less which is equal to or less than the cooling set temperature. When the fourth condition is satisfied, the second adjustment unit The third flow path is closed, and the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid are determined according to the cooling set temperature. The amount of passage of the low temperature side refrigerant through the sixth heat exchanger is larger than the amount of passage of the low temperature side refrigerant passing through the second heat exchanger while being adjusted by the two adjusting units. The third control mode to be adjusted by the first adjusting unit and the fifth condition that the third condition is satisfied and the temperature of the external heat source is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature. When it is filled, the third flow path is closed by the second adjusting unit, and the flow rate of the first flow path of the third heat exchange fluid according to the cooling set temperature, and the third heat exchange. While adjusting the flow rate of the second flow path of the fluid to the second adjusting unit, the low temperature side refrigerant makes the second heat exchanger more than the amount of passage of the low temperature side refrigerant through the sixth heat exchanger. The cold / hot simultaneous temperature adjusting device can be controlled by the fourth control mode in which the first adjusting unit adjusts so that the amount of passing through is larger.

The cold / hot simultaneous temperature adjusting device according to claim 3 is the cold / hot simultaneous temperature adjusting device according to claim 2 , wherein the control unit performs both cooling of the first heat exchange fluid and heating of the second heat exchange fluid. Occasionally, the sixth condition that the cooling treatment load is larger than the heat treatment load is satisfied, and the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source. When the seventh condition of the predetermined third temperature or lower is satisfied, the third flow path is closed to the second adjusting portion, and the flow rate of the first flow path of the third heat exchange fluid is satisfied. The low temperature side refrigerant is the second heat exchanger and the sixth heat exchange while the second adjusting unit is adjusted so that the flow rate of the third heat exchange fluid in the second flow path is larger than that of the third heat exchange fluid. The cold / hot simultaneous temperature adjusting device is configured to be controllable by the fifth control mode in which the first adjusting unit adjusts so as to pass through both of the vessels.

The cold / hot simultaneous temperature adjusting device according to claim 4 blows ambient air as an external heat source to the fourth heat exchanger in the cold / hot simultaneous temperature adjusting device according to any one of claims 1 to 3. The control unit includes a blower fan, and controls the blower fan to change the amount of blown air to adjust the amount of heat exchange between the third heat exchange fluid and the air in the fourth heat exchanger.

In the cold / temperature simultaneous temperature adjusting device according to claim 1, when the first condition that the control unit cools the first heat exchange fluid and heats the second heat exchange fluid is satisfied, the third heat is satisfied. A first control mode in which the low temperature side refrigeration circuit cools the first heat exchange fluid and the high temperature side refrigeration circuit heats the second heat exchange fluid while restricting the inflow of the exchange fluid into the first heat exchanger. When the second condition that the first heat exchange fluid does not need to be cooled and the second heat exchange fluid is heated is satisfied, the third heat exchange fluid is allowed to flow into the first heat exchanger while being allowed to flow into the first heat exchanger. The cold / hot simultaneous temperature control device can be controlled by the second control mode in which the low temperature side refrigeration circuit is stopped and the second heat exchange fluid is heated by the high temperature side refrigeration circuit.

Therefore, according to the cold / temperature simultaneous temperature adjusting device according to claim 1, when the first heat exchange fluid is cooled and the second heat exchange fluid is heated in parallel (when the first condition is satisfied). Is able to perform the cooling process by the low temperature side refrigeration circuit and the heat process by the high temperature side refrigeration circuit in parallel by controlling the cold temperature simultaneous temperature adjusting device in the first control mode without cooling the first heat exchange fluid. When it is necessary to heat the second heat exchange fluid (when the second condition is satisfied), the cold / hot simultaneous temperature control device is controlled in the second control mode, the low temperature side refrigeration circuit is stopped, and the second 1 It is possible to avoid a situation in which unnecessary cooling of the heat exchange fluid is performed, and at the same time, the high temperature side refrigerant evaporates in the first heat exchanger by utilizing the heat absorbed by the third heat exchange fluid from the external heat source (1). By absorbing heat from the third heat exchange fluid to the high temperature side refrigerant), the heat treatment of the second heat exchange fluid by the high temperature side refrigeration circuit can be reliably executed. As a result, the second heat exchange fluid can be normally heated without executing the cooling process of the first heat exchange fluid, and the second heat exchange fluid having the heating set temperature can be reliably supplied to the heating target. can.

In the cold / temperature simultaneous temperature control device according to claim 2, when the control unit performs both cooling of the first heat exchange fluid and heating of the second heat exchange fluid, the cooling treatment load is smaller than the heat treatment load. When the third condition is satisfied and the fourth condition that the temperature of the external heat source is equal to or less than the predetermined cooling set temperature of the first temperature or less is satisfied, the third flow path is closed in the second adjusting unit. The low temperature side refrigerant passes through the second heat exchanger while allowing the second adjusting unit to adjust the flow rate of the first flow path and the flow rate of the second flow path of the third heat exchange fluid according to the cooling set temperature. The third control mode in which the first adjusting unit is adjusted so that the passing amount passing through the sixth heat exchanger is larger than the passing amount, the third condition is satisfied, and the temperature of the external heat source is set to be cooled. When the fifth condition of a predetermined second temperature or higher higher than the temperature is satisfied, the third flow path is closed in the second adjusting unit, and the third heat exchange fluid is charged according to the cooling set temperature. While adjusting the flow rate of the first flow path and the flow rate of the second flow path to the second adjusting unit, the amount of passage of the low temperature side refrigerant through the second heat exchanger is larger than the amount of passage through the sixth heat exchanger. The cold / hot simultaneous temperature adjusting device is configured to be controllable by the fourth control mode in which the first adjusting unit is adjusted so that the number of heat is increased.

Therefore, according to the cold / hot simultaneous temperature adjusting device according to claim 2, the cooling treatment load is smaller than the heat treatment load, which may lead to overcooling of the first heat exchange fluid and insufficient heating of the second heat exchange fluid. In an environment, when the temperature of the external heat source is equal to or lower than the cooling set temperature (when the fourth condition is satisfied), the simultaneous cooling / temperature temperature adjusting device is controlled in the third control mode to exchange heat with the external heat source. The heat of the third heat exchange fluid whose temperature has risen due to the cooling of the first heat exchange fluid is transferred to the lower temperature side in the sixth heat exchanger while the first heat exchange fluid is cooled to the cooling set temperature by the third heat exchange fluid whose temperature has been lowered. The heat is absorbed by the refrigerant, and this heat and the heat generated by the compression in the compressor are absorbed by the high temperature side refrigerant in the first heat exchanger, so that the second heat exchange fluid is heated to the set temperature in the third heat exchanger. Can be heated sufficiently. Further, when the temperature of the external heat source is higher than the cooling set temperature (when the fifth condition is satisfied), the cooling / temperature simultaneous temperature adjusting device is controlled in the fourth control mode, and the cooling is performed by the second heat exchanger. The second heat exchanger is made by absorbing the heat absorbed from the external heat source to the third heat exchange fluid in the fourth heat exchanger from the third heat exchange fluid to the first heat exchange fluid in the fifth heat exchanger. Even if the heat of the first heat exchange fluid is sufficiently absorbed by the low temperature side refrigerant, the first heat exchange fluid can be cooled to the cooling set temperature without causing overcooling of the first heat exchange fluid, and the second heat can be obtained. By absorbing the heat absorbed by the low temperature side refrigerant in the exchanger and the heat generated by the compression in the compressor to the high temperature side refrigerant in the first heat exchanger, the second heat exchange fluid is heated and set in the third heat exchanger. It can be sufficiently heated to the temperature.

In the cold / temperature simultaneous temperature adjusting device according to claim 3, when the control unit cools the first heat exchange fluid and heats the second heat exchange fluid, the cooling treatment load is larger than the heat treatment load. When the sixth condition is satisfied and the seventh condition of the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source and is equal to or lower than the predetermined third temperature is satisfied. While closing the third flow path to the second adjusting section and adjusting the flow rate of the second flow path to be larger than the flow rate of the first flow path of the third heat exchange fluid, the second adjusting section is adjusted. The cold / hot simultaneous temperature adjusting device is configured to be controllable in the fifth control mode in which the first adjusting unit adjusts the low temperature side refrigerant so as to pass through both the second heat exchanger and the sixth heat exchanger.

Therefore, according to the cold / hot simultaneous temperature adjusting device according to claim 3, the cooling treatment load is larger than the heat treatment load, which may lead to overheating of the second heat exchange fluid and insufficient cooling of the first heat exchange fluid. In an environment, when the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source (when the seventh condition is satisfied), the cold / hot simultaneous temperature adjusting device in the fifth control mode. Is controlled, heat that cannot be dissipated to the high temperature side refrigeration circuit via the first heat exchanger in the low temperature side refrigeration circuit is dissipated to the third heat exchange fluid via the sixth heat exchanger, and the fourth Since heat is dissipated from the third heat exchange fluid to the external heat source in the heat exchanger, the first heat exchange fluid can be cooled to the cooling set temperature without causing overheating of the second heat exchange fluid in the high temperature side refrigeration circuit. A necessary and sufficient amount of low temperature side refrigerant can be supplied to the second heat exchanger to sufficiently cool the first heat exchange fluid to the cooling set temperature.

According to the cooling / temperature simultaneous temperature adjusting device according to claim 4, the control unit controls a blower fan that blows ambient air as an external heat source to the fourth heat exchanger to change the amount of blown air. 4 By adjusting the amount of heat exchange between the 3rd heat exchange fluid and air in the heat exchanger, for example, by changing the pumping amount of the 3rd heat exchange fluid by the pump, the 5th heat exchanger and the 6th heat exchange Compared to the configuration in which the amount of heat exchange in the vessel is changed, the temperature of the third heat exchange fluid that exchanges heat with the low temperature side refrigerant or the first heat exchange fluid can be adjusted to a desired temperature relatively easily. The amount of heat exchange in the fifth heat exchanger and the sixth heat exchanger can be reliably and easily controlled to a desired heat exchange amount.

It is a block diagram which shows the structure of the cold temperature simultaneous temperature adjustment apparatus 1. It is explanatory drawing for demonstrating the operation at the time of starting of the cold temperature simultaneous temperature adjustment apparatus 1, and the operation in the state which the cooling process load and the heat process load are balanced. It is explanatory drawing for demonstrating operation in the 1st endothermic mode. It is explanatory drawing for demonstrating operation in a 2nd endothermic mode. It is explanatory drawing for demonstrating operation in a heat dissipation mode. It is explanatory drawing for demonstrating operation in a 3rd endothermic mode.

Hereinafter, embodiments of the simultaneous cooling / temperature adjusting device will be described with reference to the accompanying drawings.

First, the configuration of the cold / hot simultaneous temperature adjusting device 1 will be described with reference to the attached drawings.

The cold / hot simultaneous temperature adjusting device 1 shown in FIG. 1 corresponds to a “cold / hot simultaneous temperature adjusting device”, and as an example, a heater (not shown) that heats the cleaning liquid in a cleaning device (not shown) that cleans an object with a high temperature cleaning liquid (not shown). An example of a "heating target": hereinafter, also referred to as a "heating target XH") is supplied with a high-temperature heat medium liquid Wh (an example of a "second heat exchange fluid") via a heat medium liquid circulation path LH and heated. An example of a "cooling target" (hereinafter, also referred to as "cooling target XC") that cools and liquefies the cleaning liquid vaporized by heating in the target XH (heater) via a heat medium liquid circulation path LC. It is configured to be able to supply a low-temperature heat medium liquid Wc (an example of a "first heat exchange fluid").

The cold / temperature simultaneous temperature adjusting device 1 includes a dual refrigeration cycle 2, a heat medium liquid circulation path 3, an operation unit 4, a display unit 5, a control unit 6, and a storage unit 7. In this example, the heat medium liquid Wh is supplied to the heating target XH and the heat medium liquid Wc is supplied to the cooling target XC by using the heat medium liquid circulation paths LH and LC which are ancillary equipment of the cleaning device. As will be described, a supply pipe for supplying the "first heat exchange fluid" (the above heat medium liquid circulation path LC) and a supply pipe for supplying the "second heat exchange fluid" (the above heat medium liquid circulation path). LH) can also be provided as a component of the "cooling / temperature simultaneous temperature adjusting device".

On the other hand, the dual refrigeration cycle 2 is an example of the "multi-element refrigeration cycle" and is an example of the "low temperature side refrigeration circuit", that is, the low temperature side refrigeration circuit (low stage side refrigeration circuit) 2C and the "high temperature side refrigeration circuit". It is provided with a high temperature side refrigeration circuit (high stage side refrigeration circuit) 2H, which is an example. In this dual refrigeration cycle 2, the low temperature side refrigerant Rc (an example of "low temperature side refrigerant") circulated in the low temperature side refrigeration circuit 2C and the high temperature side refrigerant Rh ("high temperature side refrigerant") circulated in the high temperature side refrigeration circuit 2H. An example of the "side refrigerant") is configured to be mutually heat exchangeable in the cascade condenser 12 which is an example of the "first heat exchanger". In this case, in the cold / temperature simultaneous temperature control device 1 of this example, the cascade condenser 12 is composed of a “three-fluid heat exchanger”, and the heat medium liquid W3 circulated in the heat medium liquid circulation path 3 as described later. (An example of "third heat exchange fluid") is configured to enable heat exchange between the high temperature side refrigerant Rh.

In addition to the above-mentioned cascade condenser 12 shared with the high temperature side refrigeration circuit 2H and the heat medium liquid circulation path 3, the low temperature side refrigeration circuit 2C includes a compressor 11, a flow rate adjusting valve 13, an evaporator 14, a flow rate adjusting valve 15, and heat exchange. It is configured to include a vessel 16 and on-off valves 17a to 17c. The compressor 11 compresses (presses) the low temperature side refrigerant Rc according to the control of the control unit 6. As described above, the cascade condenser 12 is arranged so as to enable heat exchange between the low temperature side refrigerant Rc in the low temperature side refrigerating circuit 2C and the high temperature side refrigerant Rh in the high temperature side refrigerating circuit 2H, and the high temperature side refrigerant Rh. It functions as a "condenser" that condenses the low-temperature side refrigerant Rc by heat exchange with.

The flow rate adjusting valve 13 is arranged on the upstream side of the evaporator 14 in the flow path of the low temperature side refrigerant Rc, functions as one of the "expansion valves", and passes through the evaporator 14 (in the evaporator 14). The flow rate of the low temperature side refrigerant Rc (to be evaporated) is adjusted according to the control of the control unit 6. The evaporator 14 is an example of a “second heat exchanger”, and as will be described later, the low temperature side refrigerant Rc passed through the flow rate adjusting valve 13 and the heat medium liquid Wc (cooling) in the heat medium liquid circulation path LC. The heat medium liquid Wc is cooled and the low temperature side refrigerant Rc is evaporated by heat exchange with the heat medium liquid Wc) supplied to the target XC.

The flow control valve 15 is arranged on the upstream side of the heat exchanger 16 in the flow path of the low temperature side refrigerant Rc, functions as another one of the "expansion valves", and allows the heat exchanger 16 to pass through (the flow control valve 15). The flow rate of the low temperature side refrigerant Rc (which evaporates or condenses in the heat exchanger 16) is adjusted according to the control of the control unit 6. The heat exchanger 16 is an example of the “sixth heat exchanger”, the low temperature side refrigerant Rc that has exchanged heat with the high temperature side refrigerant Rh in the cascade condenser 12, and the heat medium liquid in the heat medium liquid circulation path 3 described later. It is arranged so that heat exchange between both fluids of W3 is possible.

The on-off valves 17a to 17c are pressure-fed by the compressor 11 and exchanged heat with the high-temperature side refrigerant Rh in the cascade condenser 12, according to the control of the control unit 6, and the amount of passage of the low-temperature side refrigerant Rc through the evaporator 14 and the heat exchanger 16. Adjust the amount of passage. In this case, in the cold / temperature simultaneous temperature adjusting device 1 (low temperature side refrigerating circuit 2C) of this example, the flow rate adjusting valves 13 and 15 and the on-off valves 17a to 17c are combined to form a “first adjusting unit”.

The high temperature side refrigeration circuit 2H includes a compressor 21, a condenser 22, and a flow rate control valve 23 in addition to the above-mentioned cascade condenser 12 shared with the low temperature side refrigeration circuit 2C and the heat medium liquid circulation path 3. The compressor 21 compresses (presses) the high temperature side refrigerant Rh according to the control of the control unit 6. The condenser 22 is an example of a “third heat exchanger”, and is a high-temperature side refrigerant Rh pumped by the compressor 21 (discharged from the compressor 21) and a heat medium liquid in the heat medium liquid circulation path LH. The heat medium liquid Wh is heated by heat exchange with Wh (heat medium liquid Wh supplied to the heating target XH), and the high temperature side refrigerant Rh is condensed.

The flow rate adjusting valve 23 is arranged on the upstream side of the cascade condenser 12 in the flow path of the high temperature side refrigerant Rh, and adjusts the flow rate of the high temperature side refrigerant Rh passing through the cascade condenser 12 according to the control of the control unit 6. In the high temperature side refrigeration circuit 2H, the flow rate adjusting valve 23 functions as an "expansion valve", and the cascade condenser 12 functions as an "evaporator" that evaporates the high temperature side refrigerant Rh by heat exchange with the low temperature side refrigerant Rc. do. Further, in the cold / temperature simultaneous temperature adjusting device 1 of this example, as described above, heat exchange between the high temperature side refrigerant Rh in the high temperature side refrigerating circuit 2H and the heat medium liquid W3 in the heat medium liquid circulation path 3 is possible. The cascade condenser 12 is configured by the "three-fluid heat exchanger", whereby the cascade condenser 12 also functions as an "evaporator" that evaporates the high temperature side refrigerant Rh by heat exchange with the heat medium liquid W3.

The heat medium liquid circulation path 3 is an example of a “fluid circulation path”, and is configured to be able to circulate the heat medium liquid W3. Specifically, the heat medium liquid circulation path 3 is added to the above-mentioned cascade condenser 12 shared with the high temperature side refrigeration circuit 2H and the low temperature side refrigeration circuit 2C, and the above-mentioned heat exchanger 16 shared with the low temperature side refrigeration circuit 2C. , Pump 31, heat exchangers 32, 33 and three-way valves 34a, 34b. The pump 31 circulates the heat medium liquid W3 under the control of the control unit 6. In the cold / hot simultaneous temperature control device 1 (heat medium liquid circulation path 3) of this example, as an example, the pump 31 is configured by a liquid feed pump with a fixed pressure feed amount.

The heat exchanger 32 is an example of the “fourth heat exchanger” and heat exchange between the heat medium liquid W3 and the “outside air (air around the heat exchanger 32)” which is an example of the “external heat source”. (The heat of the outside air is absorbed by the heat medium liquid W3 or the heat of the heat medium liquid W3 is dissipated to the outside air). The heat exchanger 32 is provided with a variable rotation speed blower 32a (an example of a “blower fan”) that blows outside air to the heat exchanger 32 under the control of the control unit 6. As a result, in the cold / temperature simultaneous temperature control device 1 (heat medium liquid circulation path 3) of this example, the heat exchange amount between the heat medium liquid W3 and the outside air in the heat exchanger 32 is changed by changing the amount of air blown to the heat exchanger 32. Is configured to be adjustable. The heat exchanger 33 is an example of the “fifth heat exchanger”, and both the heat medium liquid Wc whose temperature has risen due to the cooling of the cooling target XC and the heat medium liquid W3 which has exchanged heat with the outside air in the heat exchanger 32. It is arranged so that heat exchange of the fluid is possible.

The three-way valve 34a and the three-way valve 34b are examples of the "second adjusting unit", and the heat of the heat medium liquid W3 in which the three-way valve 34a exchanges heat with the outside air in the heat exchanger 32 under the control of the control unit 6. The passage amount of the exchanger 33 is adjustable, and the three-way valve 34b can adjust the passage amount of the cascade capacitor 12 of the heat medium liquid W3 and the passage amount of the heat exchanger 16 under the control of the control unit 6. It is arranged.

In this case, in the heat medium liquid circulation path 3 of this example, the heat medium liquid W3 that has exchanged heat with the outside air in the heat exchanger 32 passes through the heat exchanger 16 after passing through the heat exchanger 33, and also passes through the cascade condenser 12. The "first flow path" that does not pass, the "second flow path" in which the heat medium liquid W3 passes through the heat exchanger 16 without passing through the heat exchanger 33 and does not pass through the cascade capacitor 12, and the heat medium liquid W3. Is provided with a "third flow path" that passes through the cascade capacitor 12 without passing through the heat exchanger 33 and the heat exchanger 16. Further, in the heat medium liquid circulation path 3 of this example, the three-way valves 34a and 34b have the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow path” of the heat medium liquid W3 under the control of the control unit 6. By adjusting the flow rate of "3rd flow path" and the flow rate of the "third flow path" of the heat medium liquid W3, "the amount of passage of the third heat exchange fluid through the fifth heat exchanger (passage of the heat exchanger 33 of the heat medium liquid W3". Amount), the amount of passage of the third heat exchange fluid through the sixth heat exchanger (the amount of passage of the heat medium liquid W3 through the heat exchanger 16), and the amount of passage of the third heat exchange fluid through the first heat exchanger (heat medium). A configuration for adjusting the amount of passage of the cascade capacitor 12 of the liquid W3) ”is adopted.

The operation unit 4 includes the temperature of the heat medium liquid Wc supplied to the cooling target XC via the heat medium liquid circulation path LC (cooling set temperature of the heat medium liquid Wc by the cold / hot simultaneous temperature adjusting device 1) and the heat medium liquid circulation path. A switch equipped with an operation switch for setting various operating conditions such as the temperature of the heat medium liquid Wh supplied to the heating target XH via the LH (heating set temperature of the heat medium liquid Wh by the simultaneous cooling / temperature adjusting device 1). The operation signal corresponding to the operation is output to the control unit 6. Under the control of the control unit 6, the display unit 5 has an operating condition setting screen for setting the operating conditions of the cold / hot simultaneous temperature adjusting device 1 and an operating state display screen showing the operating state of the cold / hot simultaneous temperature adjusting device 1 (whichever). (Not shown) etc. are displayed.

The control unit 6 is an example of the “control unit” and comprehensively controls the cold / temperature simultaneous temperature adjusting device 1. Specifically, the control unit 6 has a cooling set temperature (designated by the user) for cooling the heat medium solution Wc and a heating set temperature (designated by the user) for heating the heat medium solution Wh. The operation of the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 is controlled according to the heating target temperature). In this case, the control unit 6 performs the cooling treatment of the heat medium liquid Wc by the low temperature side refrigeration circuit 2C and the heat treatment of the heat medium liquid Wh by the high temperature side refrigeration circuit 2H in parallel, or only the heat treatment. Each part is controlled according to whether it is executed independently. Further, when the cooling treatment and the heat treatment are executed in parallel, the control unit 6 mainly performs the cooling treatment load of the cold temperature simultaneous temperature adjusting device 1 for cooling the heat medium liquid Wc to the cooling set temperature and the heat medium. Each part is controlled according to the magnitude relationship with the heat treatment load of the cooling / temperature simultaneous temperature adjusting device 1 for heating the liquid Wh to the heating set temperature.

The cooling treatment load and the heat treatment load include the cooling set temperature, the heating set temperature, the temperature before the cooling treatment of the heat medium liquid Wc, the temperature before the heat treatment of the heat medium liquid Wh, the flow rate of the heat medium liquid Wc, and the heat medium liquid. It changes according to the flow rate of Wh and the outside temperature (hereinafter, these parameters are collectively referred to as "use environment"). Therefore, in the cold / temperature simultaneous temperature control device 1 of this example, as an example, the cooling treatment load is sequentially specified based on the condensation temperature of the low temperature side refrigerant Rc in the low temperature side refrigeration circuit 2C, and the high temperature side refrigerant in the high temperature side refrigeration circuit 2H is specified. A configuration is adopted in which the heat treatment load is sequentially specified based on the condensation temperature of Rh. The control of each component of the dual refrigeration cycle 2 (low temperature side refrigeration circuit 2C and high temperature side refrigeration circuit 2H) and the heat medium liquid circulation path 3 by the control unit 6 will be described in detail later with specific examples. explain. The storage unit 7 stores the operation program of the control unit 6, the calculation result of the control unit 6, and the like.

The cold / temperature simultaneous temperature adjusting device 1 actually includes the pressure and temperature of the low temperature side refrigerant Rc in the low temperature side refrigeration circuit 2C, the pressure and temperature of the high temperature side refrigerant Rh in the high temperature side refrigeration circuit 2H, and heat medium liquid circulation. Various sensors for detecting the temperature of the heat medium liquid W3 in the passage 3, the outside temperature, the temperature of the heat medium liquid Wc, the temperature of the heat medium liquid Wh, etc. are arranged, and the configuration of the cold temperature simultaneous temperature adjusting device 1 is provided. Illustrations and detailed description of these sensors are omitted for ease of understanding.

When both the cooling treatment of the heat medium liquid Wc and the heat treatment of the heat medium liquid Wh are executed in parallel by the cold / hot simultaneous temperature adjusting device 1 (an example when the "first condition" is satisfied), the control unit. As shown in FIG. 2, in FIG. 2, first, in a state where the three-way valve 34b is controlled to restrict the inflow of the heat medium liquid W3 into the cascade condenser 12 (the inflow of the heat medium liquid W3 into the cascade condenser 12 is restricted). State: An example of control that "regulates the inflow of the third heat exchange fluid into the first heat exchanger"), and controls the pump 31 of the heat medium liquid circulation path 3 to pump the heat medium liquid W3. Start and control the blower 32a to start blowing. Further, the control unit 6 starts the operation of the low temperature side refrigeration circuit 2C and the high temperature side refrigeration circuit 2H. In the same figure and FIGS. 3 to 6 to be referred to later, the flow path in which the low temperature side refrigerant Rc is allowed to pass through is shown by a solid line in the low temperature side refrigerating circuit 2C, and the passage of the low temperature side refrigerant Rc is restricted. The flow path is shown by a broken line, and the flow path in which the heat medium liquid W3 is allowed to pass through the heat medium liquid circulation path 3 is shown by a solid line, and the passage of the heat medium liquid W3 is restricted. Is illustrated by a broken line.

Specifically, the control unit 6 controls the on-off valve 17b to the open state, controls the on-off valves 17a and 17c to the closed state, and controls the flow rate adjusting valve 15 to the minimum opening state (closed state). In addition, by controlling the opening degree required for the flow rate adjusting valve 13 to function as the "expansion valve", the low-temperature side refrigerant Rc compressed (pressure-fed) by the compressor 11 is the cascade condenser 12, the on-off valve 17b, and the on-off valve 17b. It forms a refrigerant flow path that is sucked into the compressor 11 via the flow rate adjusting valve 13 and the evaporator 14.

At this time, the high-temperature low-temperature side refrigerant Rc discharged from the compressor 11 is condensed by radiating heat to the high-temperature side refrigerant Rh in the cascade condenser 12 to lower the temperature, and the high-temperature side refrigerant Rh evaporates (temperature rises). ). Further, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid Wc in the evaporator 14 after passing through the flow rate adjusting valve 13 to raise the temperature, thereby evaporating and cooling the heat medium liquid Wc.

Further, the high-temperature side refrigerant Rh whose temperature is raised and evaporated by the heat absorption in the cascade condenser 12 and whose temperature is further raised by the compression in the compressor 21 is radiated and condensed in the heat medium liquid Wh in the condenser 22. The heat medium solution Wh is heated together with the heat medium solution Wh. Further, the condensed high temperature side refrigerant Rh is endothermic and evaporated from the low temperature side refrigerant Rc in the cascade capacitor 12 as described above after passing through the flow rate adjusting valve 23. As a result, the low-temperature heat medium liquid Wc cooled by the low-temperature side refrigeration circuit 2C is supplied to the cooling target XC, and the high-temperature heat medium liquid Wh heated by the high-temperature side refrigeration circuit 2H is supplied to the heating target XH. To.

The number of revolutions of the compressor 11 (pressure feed amount of the low temperature side refrigerant Rc), the opening degree of the "expansion valve (at this point, the flow rate adjusting valve 13)", etc. are set according to the cooling set temperature and the temperature of the heat medium liquid Wc. Regarding the control to change, and the control to change the rotation speed of the compressor 21 (pressure feed amount of the high temperature side refrigerant Rh), the opening degree of the flow rate adjusting valve 23, etc. according to the heating set temperature and the temperature of the heat medium liquid Wh, there are multiple elements. Since it is the same as the control generally performed in the cold / temperature simultaneous temperature control device having a refrigeration cycle, detailed description of these controls will be omitted.

In this case, in the cold / temperature simultaneous temperature adjusting device 1 of this example, as described above, when the cooling treatment of the heat medium liquid Wc and the heat treatment of the heat medium liquid Wh are executed in parallel, the control unit 6 mainly cools. The operation of each part of the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 is controlled based on the magnitude relationship between the treatment load and the heat treatment load. Specifically, the control unit 6 specifies the condensation temperature of the low-temperature side refrigerant Rc and the high-temperature side refrigerant Rh from the time when the operation of the cold / hot simultaneous temperature adjusting device 1 is started, and the cooling processing load and the cooling processing load are based on the specified temperature. Specify each heat treatment load.

At this time, when the usage environment is such that both the specified cooling treatment load and the heat treatment load are balanced within a predetermined allowable difference range, the control unit 6 controls the cascade of the heat medium liquid W3. While maintaining the state in which the inflow to the condenser 12 is restricted, the flow path of the low temperature side refrigerant Rc is maintained in the state at the time of starting (the state shown in FIG. 2) (operation in the normal mode: "By the low temperature side refrigeration circuit". An example of control in the "first control mode" in which the first heat exchange fluid is cooled and the second heat exchange fluid is heated by the high temperature side refrigeration circuit)). When the operation is continued for a long time in such a usage environment (when there is a high possibility that the operation does not immediately shift to the endothermic mode or the heat dissipation mode described later), the pump of the heat medium liquid circulation path 3 31 and the blower 32a may be stopped.

On the other hand, when the cooling treatment and the heat treatment are executed in parallel, the temperature difference between the cooling set temperature and the heat medium liquid Wc before the cooling treatment is small in a usage environment, or the heat medium liquid Wh between the heat set temperature and the heat medium liquid before the heat treatment. In a usage environment where the temperature difference between the two and the above is large, the specified cooling treatment load becomes smaller than the heat treatment load (an example when the "third condition" is satisfied). Under such a usage environment, the control unit 6 operates the cold / temperature simultaneous temperature adjusting device 1 in either the first endothermic mode or the second endothermic mode according to the relationship between the temperature of the outside air and the set cooling temperature.

Specifically, when the cooling treatment load is smaller than the heat treatment load, the control unit 6 first controls the three-way valve 34b to the cascade condenser 12 of the heat medium liquid W3 as shown in FIGS. 3 and 4. When the pump 31 and the blower 32a are stopped, these operations are performed while maintaining the regulated state of the inflow of the pump 31 (another example of the control of "closing the third flow path in the second adjusting unit"). At the same time as starting, the three-way valve 34a is controlled to switch the flow path so that the heat medium liquid W3 passes through both the above-mentioned "first flow path" and the "second flow path". Further, as an example, the control unit 6 controls the blower 32a so that the temperature of the heat medium liquid W3 immediately after passing through the heat exchanger 32 becomes the same as the temperature of the outside air, and sends the outside air to the heat exchanger 32. Adjust the air volume. As a result, the heat medium liquid W3 having a temperature similar to that of the outside air temperature is pumped by the pump 31.

Further, when the temperature of the outside air is equal to or less than the predetermined cooling set temperature or less than the predetermined first temperature (for example, "first temperature" = "cooling set temperature") (when the "fourth condition" is satisfied). (1 example), the control unit 6 controls the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 to operate in the first endothermic mode (an example of the "third control mode" in the "first control mode"). .. Specifically, as shown in FIG. 3, the control unit 6 controls the on-off valve 17c to the open state, controls the on-off valves 17a and 17b to the closed state, and sets the flow rate adjusting valve 13 to the minimum opening state. It is controlled to (closed state), and the opening degree required for the flow rate adjusting valve 15 to function as the "expansion valve" of the low temperature side refrigeration circuit 2C is controlled.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is sucked into the compressor 11 via the cascade condenser 12, the flow rate adjusting valve 15, the heat exchanger 16 and the on-off valve 17c. A refrigerant flow path (passing through the heat exchanger 16 without passing through the evaporator 14) is formed (“the low temperature side refrigerant passes through the second heat exchanger 16). An example of control that "the first adjusting unit is adjusted so that the amount of passage through the heat exchanger is larger"). Further, the control unit 6 controls the three-way valve 34a according to the temperature of the heat medium liquid W3 after passing through the heat exchanger 33, and controls the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow path”. To adjust the flow rate. As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the first endothermic mode.

In this first heat absorption mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 having a temperature similar to the temperature of the outside air due to heat exchange with the outside air in the heat exchanger 32 is pressure-fed by the pump 31, one of them. When the unit is passed through the heat exchanger 33, it is heat-exchanged with the heat medium liquid Wc whose temperature has been raised by the cooling of the cooling target XC. As a result, the heat medium liquid Wc is cooled to the cooling set temperature, and the temperature of the heat medium liquid W3 is higher than the temperature of the outside air (the temperature of the heat medium liquid Wc after the cooling treatment of the cooling target XC). Can be raised to.

Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). After passing through the flow rate adjusting valve 15, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid W3 in the heat exchanger 16 to raise the temperature. Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh that has been evaporated in the cascade condenser 12 and further raised in temperature by the compression in the compressor 21 dissipates heat to the heat medium liquid Wh in the condenser 22 and condenses it. At the same time, the heat medium solution Wh is heated.

That is, in the first heat absorption mode in which the cooling treatment load is small and the temperature of the outside air is low to some extent, the heat of the heat medium liquid Wc whose temperature has risen due to the cooling of the cooling target XC passes through the heat medium liquid W3. The heat is absorbed by the low temperature side refrigerant Rc, and this heat is absorbed by the high temperature side refrigerant Rh in the cascade condenser 12. As a result, a sufficient amount of the high temperature side refrigerant Rh can be evaporated in the cascade condenser 12 without operating the low temperature side refrigeration circuit 2C in an operating state where supercooling occurs, so that the heat medium liquid Wc is set to the cooling set temperature. While cooling (without supercooling), the heat medium solution Who can be sufficiently heated to the set heating temperature.

When the temperature of the outside air is sufficiently lower than the cooling set temperature during the operation in the first heat absorption mode, the three-way valve 34a reduces the amount of heat medium liquid W3 passing through the heat exchanger 33 to generate heat. Prevents overcooling of the medium solution Wc. Further, when the temperature of the outside air is close to the cooling set temperature, the heat medium liquid Wc is changed to the temperature of the outside air (cooling setting) by increasing the passing amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valve 34a. Allow to cool sufficiently to temperature). As a result, the low-temperature heat medium solution Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium solution Wh heated to the heating set temperature is supplied to the heating target XH. In this case, the above-mentioned "first temperature", which is one of the discrimination conditions when operating in the first heat absorption mode, is from the same temperature as the set cooling temperature to a temperature about 10 ° C lower than the set cooling temperature. By defining the temperature within the range (for example, a temperature about 5 ° C. lower than the cooling set temperature), it is possible to suitably avoid overcooling of the heat medium solution Wc and insufficient heating of the heat medium solution Wh.

Further, when the specified cooling treatment load is smaller than the heat treatment load and the temperature of the outside air is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature (when the "fifth condition" is satisfied). (Example), the control unit 6 controls the dual refrigeration cycle 2 and the heat medium liquid circulation path 3 to operate in the second endothermic mode (an example of the "fourth control mode" in the "first control mode". ). Specifically, as shown in FIG. 4, the control unit 6 controls the on-off valve 17b to the open state, controls the on-off valves 17a and 17c to the closed state, and sets the flow rate adjusting valve 15 to the minimum opening state. It is controlled to (closed state), and the opening degree required for the flow rate adjusting valve 13 to function as the "expansion valve" of the low temperature side refrigeration circuit 2C is controlled.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is sucked into the compressor 11 via the cascade condenser 12, the on-off valve 17b, the flow rate adjusting valve 13, and the evaporator 14. A refrigerant flow path (passing through the evaporator 14 without passing through the heat exchanger 16) is formed (“the lower temperature side refrigerant has a second heat than the amount of passage through which the low temperature side refrigerant passes through the sixth heat exchanger). An example of control that "the first adjusting unit is adjusted so that the amount of passage through the exchanger is larger"). Further, the control unit 6 controls the three-way valve 34a according to the temperature of the heat medium liquid W3 after passing through the heat exchanger 33, and controls the flow rate of the “first flow path” of the heat medium liquid W3 and the “second flow path”. To adjust the flow rate. As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the second endothermic mode.

In this second heat absorption mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 has a temperature similar to the temperature of the outside air (a temperature higher than the cooling set temperature) due to heat exchange with the outside air in the heat exchanger 32. Is pumped by the pump 31, and when a part of it is passed through the heat exchanger 33, it is heat-exchanged with the heat medium liquid Wc whose temperature has been raised by the cooling of the cooling target XC. As a result, the temperature of the heat medium liquid Wc is sufficiently raised by cooling the cooling target XC and heat exchange with the heat medium liquid W3, and the temperature of the heat medium liquid W3 is lowered to some extent. The heat medium liquid W3 is heated again to a temperature similar to the temperature of the outside air by exchanging heat with the outside air when it is passed through the heat exchanger 32.

Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). After passing through the flow rate adjusting valve 13, the condensed low-temperature side refrigerant Rc absorbs heat from the heat medium liquid Wc in the evaporator 14 to raise the temperature. At this time, the heat medium liquid Wc that has absorbed the heat of the heat medium liquid W3 in the heat exchanger 33 is cooled to the cooling set temperature by heat exchange with the low temperature side refrigerant Rc in the evaporator 14. Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh that has been evaporated in the cascade condenser 12 and further raised in temperature by the compression in the compressor 21 dissipates heat to the heat medium liquid Wh in the condenser 22 and condenses it. At the same time, the heat medium solution Wh is heated.

That is, in the second heat absorption mode in which the cooling treatment load is small and the temperature of the outside air is high to some extent, the heat exchanger 32 receives heat from the outside air prior to cooling by the low temperature side refrigeration circuit 2C (evaporator 14). By absorbing the heat absorbed by the heat medium liquid W3 from the heat medium liquid W3 to the heat medium liquid Wc in the heat exchanger 33, the heat of the heat medium liquid Wc is sufficiently absorbed by the low temperature side refrigerant Rc in the evaporator 14. However, it is possible to cool the heat medium liquid Wc to a set cooling temperature without causing overcooling. Further, as a result of being able to sufficiently evaporate the high temperature side refrigerant Rh in the cascade condenser 12 by the amount of heat absorbed in the evaporator 14, the heat medium liquid Wh can be sufficiently heated to the heating set temperature in the condenser 22. It is possible.

When the temperature of the outside air is sufficiently higher than the cooling set temperature during the operation in the second heat absorption mode, the temperature is lowered by reducing the amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valve 34a. It is possible to prevent the heat dissipation amount (heat absorption amount from the heat medium liquid W3 to the low temperature side refrigerant Rc) to be excessively large (the temperature of the low temperature side refrigerant Rc rises excessively) with respect to the side refrigeration circuit 2C. Further, when the temperature of the outside air is close to the cooling set temperature, the low temperature side refrigerant Rc is sufficiently supplied in the evaporator 14 by increasing the amount of the heat medium liquid W3 passing through the heat exchanger 33 by the three-way valve 34a. A high-temperature heat medium solution Wc that can be vaporized is supplied to the evaporator 14. As a result, the low-temperature heat medium solution Wc cooled to the cooling set temperature is supplied to the cooling target XC, and the high-temperature heat medium solution Wh heated to the heating set temperature is supplied to the heating target XH. In this case, the above-mentioned "second temperature", which is one of the discrimination conditions when operating in the second heat absorption mode, is, for example, a temperature exceeding the cooling set temperature and 10 ° C. higher than the cooling set temperature. By defining the temperature within the range up to a slightly higher temperature (for example, a temperature about 5 ° C higher than the cooling set temperature), it is preferable to overcool the heat medium solution Wc or insufficiently heat the heat medium solution Wh. Can be avoided.

Further, when the cooling treatment and the heat treatment are executed in parallel, the usage environment in which the temperature difference between the cooling set temperature and the heat medium liquid Wc before the cooling treatment is large, and the heating set temperature and the heat medium liquid Wh before the heat treatment are used. In a usage environment where the temperature difference between the two is small, the specified cooling treatment load becomes larger than the heat treatment load (an example when the "sixth condition" is satisfied). Under such a usage environment, the control unit 6 operates the cold / hot simultaneous temperature adjusting device 1 in the heat dissipation mode when the temperature of the outside air is low to some extent (when the “seventh condition” described later is satisfied).

Specifically, when the cooling treatment load is larger than the heat treatment load, the control unit 6 first controls the three-way valve 34b to flow the heat transfer fluid W3 into the cascade condenser 12, as shown in FIG. When the pump 31 and the blower 32a are stopped, these operations are started while maintaining the regulated state (another example of the control of "closing the third flow path in the second adjusting unit"). At the same time, the three-way valve 34a is controlled to switch the flow path so that the heat medium liquid W3 passes only through the above-mentioned "second flow path" ("the flow rate of the first flow path of the third heat exchange fluid is higher than the flow rate". (3) An example of control that "the second adjusting unit is adjusted so that the flow rate of the second flow path of the heat exchange fluid is larger"). Further, as an example, the control unit 6 controls the blower 32a so that the temperature of the heat medium liquid W3 immediately after passing through the heat exchanger 32 becomes the same as the temperature of the outside air, and sends the outside air to the heat exchanger 32. Adjust the air volume. As a result, the heat medium liquid W3 having a temperature similar to that of the outside air temperature is pumped by the pump 31.

Further, in a state where the cooling treatment load is large, the temperature of the outside air is lower than the temperature of the heat medium liquid W3 that exchanges heat with the outside air (the temperature of the heat medium liquid W3 at the inlet of the heat exchanger 32). When the temperature is below the temperature (an example when the "seventh condition" is satisfied), the control unit 6 controls the on-off valve 17a to the open state, controls the on-off valves 17b and 17c to the closed state, and flows out. The control valve 15 is controlled to the minimum opening (closed state), and the flow control valve 13 is controlled to the opening required to function as the "expansion valve" of the low temperature side refrigeration circuit 2C.

As a result, in the low temperature side refrigeration circuit 2C, the low temperature side refrigerant Rc compressed (pushed) by the compressor 11 is compressed via the cascade condenser 12, the on-off valve 17a, the heat exchanger 16, the flow rate adjusting valve 13, and the evaporator 14. A refrigerant flow path sucked into the machine 11 (passing through both the evaporator 14 and the heat exchanger 16) is formed (“the low temperature side refrigerant passes through both the second heat exchanger and the sixth heat exchanger”). An example of control that "the first adjustment unit is made to adjust"). As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the heat dissipation mode (an example of the "fifth control mode" in the "first control mode").

In this heat dissipation mode, in the heat medium liquid circulation path 3, the heat medium liquid W3 having a temperature similar to the temperature of the outside air due to heat exchange with the outside air in the heat exchanger 32 is pressure-fed by the pump 31 to the heat exchanger 16. Can be passed through. Further, in the low temperature side refrigeration circuit 2C, the high temperature low temperature side refrigerant Rc discharged from the compressor 11 is radiated and condensed in the high temperature side refrigerant Rh in the cascade condenser 12, and the high temperature side refrigerant Rh is evaporated (temperature rise). The condensed low-temperature side refrigerant Rc and the vaporized low-temperature side refrigerant Rc that could not be completely condensed in the cascade condenser 12 due to the large cooling treatment load are passed through the heat exchanger 16 via the on-off valve 17a.

At this time, the high-temperature low-temperature side refrigerant Rc in the gas-liquid mixed state is radiated to the heat medium liquid W3 having a temperature similar to that of the outside air in the heat exchanger 16 and sufficiently condensed. Further, the heat medium liquid W3 whose temperature has risen due to heat exchange with the low temperature side refrigerant Rc exchanges heat with the outside air (heat is radiated from the outside air) in the heat exchanger 32, is cooled to the same temperature as the outside air, and then is cooled by the pump 31. It is pumped again. Further, the low temperature side refrigerant Rc condensed in the heat exchanger 16 is raised in temperature by heat exchange with the heat medium liquid Wc and evaporated when it is passed through the evaporator 14 through the flow rate adjusting valve 13. , Is compressed again by the compressor 11. As a result, the heat medium liquid Wc cooled to the cooling set temperature by heat exchange with the low temperature side refrigerant Rc is supplied to the cooling target XC.

Further, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh whose temperature is raised and evaporated by heat exchange with the low temperature side refrigerant Rc in the cascade condenser 12 and further raised by compression in the compressor 21 is generated. In the condenser 22, the heat is radiated to the heat medium Wh and condensed, and the heat medium Wh is heated. As a result, the heat medium liquid Wh heated to the heating set temperature by heat exchange with the high temperature side refrigerant Rh is supplied to the heating target XH.

That is, in the heat dissipation mode in which the cooling processing load is large and the temperature of the outside air is low to some extent, the heat cannot be dissipated to the high temperature side refrigeration circuit 2H via the cascade condenser 12 in the low temperature side refrigeration circuit 2C. (Heat dissipation that may cause overheating of the heat medium liquid Wh in the high temperature side refrigeration circuit 2H) is radiated to the heat medium liquid W3 in the heat exchanger 16, and this heat is radiated to the outside air via the heat exchanger 32. To. As a result, a sufficient amount of the low temperature side refrigerant Rc required to cool the heat medium liquid Wc to the cooling set temperature in the low temperature side refrigeration circuit 2C without causing overheating of the heat medium liquid Wh in the high temperature side refrigeration circuit 2H. Can be supplied to the evaporator 14.

The above-mentioned "third temperature", which is one of the discrimination conditions when operating in this heat dissipation mode, is a temperature lower than the temperature of the heat medium liquid W3 that exchanges heat with the outside air, and is the heat medium liquid W3. It is defined as a temperature within a range in which a temperature lower than the temperature of about 10 ° C. is a lower limit (for example, a temperature about 5 ° C. lower than the temperature of the heat medium liquid W3 at the inlet of the heat exchanger 32).

On the other hand, among the applications of this kind of "cold / temperature simultaneous temperature adjusting device", there is an application that requires a heat treatment of the heat medium liquid Wh while eliminating the cooling treatment of the heat medium liquid Wc. As an example, in the cold / hot simultaneous temperature control device 1 of this example in which the high temperature heat medium solution Wh is supplied to the heater that heats the cleaning liquid in the cleaning device, the heat medium solution Wc is supplied to the cooler (cooling target XC). This corresponds to the case where the process of supplying the heat medium solution Wh to the heater (heating target XH) is executed. In operation in such an application, the control unit 6 operates the cold / hot simultaneous temperature adjusting device 1 in the third endothermic mode (an example of the "second control mode").

Specifically, when it is instructed by the operation of the operation unit 4 to perform the heat treatment of the heat medium liquid Wh without performing the cooling treatment of the heat medium liquid Wc (“No cooling of the first heat exchange fluid is required and the first). 2 As an example when the "second condition" of heating the heat exchange fluid is satisfied), the control unit 6 first controls the three-way valve 34b to control the heat medium, as shown in FIG. Allow the inflow of W3 into the cascade capacitor 12 (opening of the "third flow path"), and control the three-way valve 34a so that the heat medium liquid W3 passes only through the above-mentioned "third flow path" ( The flow path is switched (so that the heat medium liquid W3 does not pass through the "first flow path" or the "second flow path"), and when the pump 31 and the blower 32a are stopped, these operations are started (so that they do not pass through the "first flow path" or the "second flow path"). An example of control that "allows the inflow of the third heat exchange fluid into the first heat exchanger").

Further, as an example, the control unit 6 controls the blower 32a so that the temperature of the heat medium liquid W3 immediately after passing through the heat exchanger 32 becomes the same as the temperature of the outside air, and sends the outside air to the heat exchanger 32. Adjust the air volume. As a result, the heat medium liquid W3 having a temperature similar to that of the outside air temperature is pumped by the pump 31 and supplied to the cascade capacitor 12 via the three-way valves 34a and 34b.

Further, when the control unit 6 is not executing the cooling process of the heat medium liquid Wc by the low temperature side refrigeration circuit 2C, the control unit 6 maintains the state in which the low temperature side refrigeration circuit 2C is stopped and the heat medium by the low temperature side refrigeration circuit 2C. When the cooling process of the liquid Wc is being executed, the low temperature side refrigeration circuit 2C is stopped (an example of control of "stopping the low temperature side refrigeration circuit"). Further, when the control unit 6 is executing the heat treatment of the heat medium liquid Wh by the high temperature side refrigeration circuit 2H, the control unit 6 controls the high temperature side refrigeration circuit 2H to continuously execute the heat treatment, and the high temperature side refrigeration circuit 2H. When the heat treatment of the heat medium liquid Wh is not executed, the high temperature side refrigeration circuit 2H is controlled to start the heat treatment (control to "execute the heating of the second heat exchange fluid by the high temperature side refrigeration circuit"). An example). As a result, the cold / hot simultaneous temperature adjusting device 1 is in a state of operating in the third endothermic mode.

In this third endothermic mode, in the high temperature side refrigeration circuit 2H, the high temperature side refrigerant Rh compressed (press-fed) by the compressor 21 is radiated to the heat medium liquid Wh in the condenser 22 and condensed, and at the same time, the heat medium liquid Wh. To heat. As a result, the high-temperature heat medium solution Wh is supplied to the heating target XH via the heat medium liquid circulation path LH. Further, the high temperature side refrigerant Rh condensed in the condenser 22 is heat-exchanged with the heat medium liquid W3 in the cascade condenser 12 after passing through the flow rate adjusting valve 23. At this time, the temperature of the heat medium liquid Wh is sufficiently raised by exchanging heat with the heat medium liquid W3 whose temperature has risen sufficiently due to heat exchange with the outside air (heat absorption from the outside air) in the heat exchanger 32. It is evaporated. As a result, a sufficient amount of the high-temperature side refrigerant Rh required for heating the heat medium solution Wh in the condenser 22 can be compressed (press-fed) by the compressor 21.

Further, in the heat medium liquid circulation path 3, the heat medium liquid W3 whose temperature has dropped due to heat exchange with the high temperature side refrigerant Rh in the cascade condenser 12 sufficiently absorbs heat from the outside air by heat exchange with the outside air in the heat exchanger 32. After the temperature is raised, it is supplied to the cascade condenser 12 again to exchange heat with the high temperature side refrigerant Rh.

That is, in the above-mentioned third heat absorption mode, which does not require cooling treatment and only heat treatment is performed (heat treatment load is generated when the cooling treatment load is zero), the condenser 22 of the high temperature side refrigeration circuit 2H is used. In order to evaporate (raise the temperature) the high temperature side refrigerant Rh required for heating the heat medium liquid Wh in the cascade condenser 12, the heat medium liquid W3 absorbs the heat of the outside air in the heat exchanger 32 of the heat medium liquid circulation path 3. Is supplied to the cascade condenser 12. This makes it possible to sufficiently heat the heat medium solution Wh to the heat set temperature in a state where the low temperature side refrigeration circuit 2C is stopped, that is, in a state where the heat medium solution Wc is not cooled.

As described above, in the cold / temperature simultaneous temperature adjusting device 1, when the control unit 6 satisfies the "first condition" that both the cooling of the heat medium liquid Wc and the heating of the heat medium liquid Wh are satisfied, the heat is generated. A "first control mode" in which the low temperature side refrigeration circuit 2C cools the heat medium liquid Wc and the high temperature side refrigeration circuit 2H heats the heat medium liquid Wh while restricting the inflow of the medium liquid W3 into the cascade condenser 12. When the "second condition" that the heat medium liquid Wc does not need to be cooled and the heat medium liquid Wh is heated is satisfied, the low temperature side is allowed to flow into the cascade capacitor 12 of the heat medium liquid W3. The cooling / temperature simultaneous temperature adjusting device 1 can be controlled by the "second control mode" in which the refrigerating circuit 2C is stopped and the heat medium liquid Wh is heated by the refrigerating circuit 2H on the high temperature side.

Therefore, according to the cold / temperature simultaneous temperature adjusting device 1, when the cooling of the heat medium liquid Wc and the heating of the heat medium liquid Wh are executed in parallel (when the "first condition" is satisfied), " In the first control mode, the cold / hot simultaneous temperature adjusting device 1 is controlled so that the cooling process by the low temperature side refrigeration circuit 2C and the heat treatment by the high temperature side refrigeration circuit 2H can be performed in parallel to cool the heat medium liquid Wc. When it is necessary to heat the heat medium solution Wh without heat (when the "second condition" is satisfied), the cooling / temperature simultaneous temperature adjusting device 1 is controlled in the "second control mode" to control the low temperature side refrigeration circuit 2C. Can be stopped and unnecessary cooling of the heat medium liquid Wc can be avoided, and the heat absorbed by the heat medium liquid W3 from the outside air is used to evaporate the high temperature side refrigerant Rh in the cascade condenser 12. (The heat is absorbed from the heat medium liquid W3 to the high temperature side refrigerant Rh), so that the heat treatment of the heat medium liquid Wh by the high temperature side refrigeration circuit 2H can be reliably executed. As a result, the heat medium solution Wh can be normally heated without executing the cooling process of the heat medium solution Wc, and the heat medium solution Wh at the set heating temperature can be reliably supplied to the heating target XH.

Further, in the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 states that the cooling treatment load is smaller than the heat treatment load when both the heat medium liquid Wc is cooled and the heat medium liquid Wh is heated. When the "three conditions" are satisfied and the "fourth condition" with the predetermined "first temperature" or less of the cooling set temperature or less is satisfied, the "second adjustment unit" is set to ". While closing the "third flow path" and having the "second adjustment section" adjust the flow rate of the "first flow path" and the flow rate of the "second flow path" of the heat medium liquid W3 according to the cooling set temperature, The "third control mode" and the "third control mode" in which the "first adjusting unit" is adjusted so that the amount of passage through the heat exchanger 16 is larger than the amount of passage of the low temperature side refrigerant Rc through the evaporator 14. When "3 conditions" are satisfied and the "fifth condition" with the predetermined "second temperature" or higher, which is higher than the cooling set temperature, is satisfied, the "second adjustment unit" is entered. While closing the "third flow path" and allowing the "second adjustment unit" to adjust the flow rate of the "first flow path" and the flow rate of the "second flow path" of the heat medium liquid W3 according to the cooling set temperature. In the "fourth control mode", the temperature is adjusted by the "first adjusting unit" so that the passing amount of the low temperature side refrigerant Rc passes through the evaporator 14 is larger than the passing amount of the low temperature side refrigerant Rc. The simultaneous temperature control device 1 is configured to be controllable.

Therefore, according to this cold / hot simultaneous temperature adjusting device 1, the cooling treatment load is smaller than the heat treatment load, and the outside air is used in a usage environment where overcooling of the heat medium solution Wc and insufficient heating of the heat medium solution Wh may occur. When the temperature is equal to or lower than the cooling set temperature (when the "fourth condition" is satisfied), the cold / temperature simultaneous temperature adjusting device 1 is controlled in the "third control mode", and the temperature is exchanged with the outside air. While the heat medium liquid Wc is cooled to the cooling set temperature by the lowered heat medium liquid W3, the heat of the heat medium liquid W3 whose temperature has risen due to the cooling of the heat medium liquid Wc is absorbed by the low temperature side refrigerant Rc in the heat exchanger 16. By absorbing this heat and the heat generated by the compression in the compressor 11 into the high temperature side refrigerant Rh in the cascade condenser 12, the heat medium solution Wh can be sufficiently heated to the heating set temperature in the condenser 22. Further, when the temperature of the outside air is higher than the cooling set temperature (when the "fifth condition" is satisfied), the cooling / temperature simultaneous temperature adjusting device 1 is controlled in the "fourth control mode", and the evaporator 14 is used. By absorbing the heat absorbed from the outside air into the heat medium liquid W3 in the heat exchanger 32 from the heat medium liquid W3 to the heat medium liquid Wc in the heat exchanger 33, the heat medium liquid Wc is absorbed in the evaporator 14. Even if the heat is sufficiently absorbed by the low temperature side refrigerant Rc, the heat medium Wc can be cooled to the cooling set temperature without causing overcooling of the heat medium Wc, and the heat is absorbed by the low temperature side refrigerant Rc in the evaporator 14. By absorbing the heat and the heat generated by the compression in the compressor 11 into the high temperature side refrigerant Rh in the cascade condenser 12, the heat medium liquid Wh can be sufficiently heated to the heating set temperature in the condenser 22.

Further, in the cold / hot simultaneous temperature adjusting device 1, when the control unit 6 both cools the heat medium liquid Wc and heats the heat medium liquid Wh, the cooling treatment load is larger than the heat treatment load. When "6 conditions" are satisfied and the "7th condition" with a predetermined third temperature or lower, which is lower than the temperature of the heat medium liquid W3 that exchanges heat with the outside air, is satisfied, "6 conditions" are satisfied. The "second flow path" is closed to the "second adjustment section", and the flow rate of the "second flow path" is larger than the flow rate of the "first flow path" of the heat medium liquid W3. The cooling / temperature simultaneous temperature adjusting device 1 in the "fifth control mode" in which the low temperature side refrigerant Rc is adjusted by the "first adjusting unit" so as to pass through both the evaporator 14 and the heat exchanger 16 while being adjusted by the "adjusting unit". Is configured to be controllable.

Therefore, according to the cold / hot simultaneous temperature adjusting device 1, the outside air is used in a usage environment where the cooling treatment load is larger than the heat treatment load, which may lead to overheating of the heat medium solution Wh or insufficient cooling of the heat medium solution Wc. When the temperature of the heat medium liquid W3 that exchanges heat with the outside air is lower than the temperature of the heat medium liquid W3 (when the "seventh condition" is satisfied), the cold / temperature simultaneous temperature adjusting device 1 is controlled in the "fifth control mode". The heat that cannot be dissipated to the high temperature side refrigeration circuit 2H via the cascade condenser 12 in the low temperature side refrigeration circuit 2C is dissipated to the heat medium liquid W3 via the heat exchanger 16 and is dissipated to the heat medium in the heat exchanger 32. Since the heat is dissipated from the liquid W3 to the outside air, a sufficient amount of low temperature side refrigerant required to cool the heat medium liquid Wc to the cooling set temperature without causing overheating of the heat medium liquid Wh in the high temperature side refrigeration circuit 2H. Rc can be supplied to the evaporator 14 to sufficiently cool the heat transfer liquid Wc to the cooling set temperature.

Further, according to the cold / temperature simultaneous temperature adjusting device 1, the control unit 6 controls the blower 32a that blows the outside air (ambient air) to the heat exchanger 32 to change the amount of heat blown to the heat exchanger. By adjusting the amount of heat exchange between the heat medium liquid W3 and the outside air (air) in 32, for example, by changing the pumping amount of the heat medium liquid W3 by the pump 31, the heat in the heat exchanger 16 and the heat exchanger 33 is changed. Compared with the configuration in which the exchange amount is changed, the temperature of the heat medium liquid W3 for heat exchange with the low temperature side refrigerant Rc and the heat medium liquid Wc can be adjusted to a desired temperature relatively easily, so that the heat exchanger 16 can be used. And the heat exchange amount in the heat exchanger 33 can be reliably and easily controlled to a desired heat exchange amount.

The configuration of the "cold / hot simultaneous temperature adjusting device" is not limited to the above-mentioned example of the configuration of the cold / hot simultaneous temperature adjusting device 1. For example, during operation in the third endothermic mode (during control in the second control mode), the control unit 6 controls the three-way valve 34a so that the heat medium liquid W3 passes only through the “third flow path”. The configuration for switching the flow path is described as an example, but instead of such a configuration, the flow path is set so that the heat medium liquid W3 passes through the “first flow path” or the “second flow path”. It is also possible to adopt a switching configuration. In this case, when the heat medium liquid Wc that has not been cooled by the low temperature side refrigeration circuit 2C has a certain temperature rise due to heat absorption from the cooling target XC or heat absorption from the outside air, it is during operation in the third heat absorption mode ( In the heat exchanger 32, by switching the flow path so as to pass through at least the “first flow path (heat exchanger 33)” in addition to the “third flow path” during the control in the second control mode). In addition to absorbing heat from the outside air to the heat medium liquid W3, the heat exchanger 33 can also absorb heat from the heat medium liquid Wc to the heat medium liquid W3. Thereby, when the temperature of the outside air is slightly low, by adopting such a configuration, the temperature of the high temperature side refrigerant Rh can be sufficiently raised by heat exchange in the cascade capacitor 12.

Further, an example is a configuration in which the cooling treatment load and the heat treatment load are specified based on the condensation temperature of the refrigerant during operation in the first heat absorption mode, the second heat absorption mode, and the heat dissipation mode (during control in the first control mode). As described above, instead of such a configuration, the condensation pressure of the refrigerant, the refrigerant temperature at any part in the refrigerating circuit, the refrigerant pressure at any part in the refrigerating circuit, and any two points in the refrigerating circuit. Based on various parameters such as the refrigerant temperature difference in, the refrigerant pressure difference at any two points in the refrigeration circuit, the power consumption of the electric motor in the refrigerant compressor per unit time, and the temperature of any part of the refrigerant compressor. A specific configuration can be adopted. Further, a configuration for specifying the cooling treatment load based on the temperature difference of the heat medium liquid Wc at the inlet and the outlet of the evaporator 14 and the flow rate of the heat medium liquid Wc passing through the evaporator 14 per unit time, and the condenser 22. It is also possible to adopt a configuration in which the heat treatment load is specified based on the temperature difference of the heat medium liquid Wh at the inlet and the outlet of the heat medium and the flow rate of the heat medium liquid Wh passing through the condenser 22 per unit time.

Further, in the "third control mode" of the "first control mode", the heat exchanger 16 (sixth heat exchanger) is operated without the low temperature side refrigerant Rc passing through the evaporator 14 (second heat exchanger). Although the configuration through which the heat exchanger is passed has been described as an example, the condition that "the amount of passage of the low-temperature side refrigerant through the sixth heat exchanger is larger than the amount of passage of the low-temperature side refrigerant through the second heat exchanger" is satisfied. It is also possible to adopt a configuration in which the "low temperature side refrigerant" can pass through both the "second heat exchanger" and the "sixth heat exchanger" within the range. Similarly, in the "fourth control mode" of the "first control mode", the configuration in which the low temperature side refrigerant Rc is allowed to pass through the evaporator 14 without passing through the heat exchanger 16 will be described as an example. , The "low temperature side refrigerant" is "second" within the range satisfying the condition that "the amount of passage through the second heat exchanger is larger than the amount of passage of the low temperature side refrigerant through the sixth heat exchanger". It is also possible to adopt a configuration that allows both the "heat exchanger" and the "sixth heat exchanger" to pass through.

Further, an example including a cascade condenser 12 composed of a "three-fluid heat exchanger" capable of heat exchange between three fluids of the low temperature side refrigerant Rc, the high temperature side refrigerant Rh and the heat medium liquid W3 has been described. A "multi-fluid heat exchanger (multi-fluid cascade condenser)" such as a "four-fluid heat exchanger" or a "five-fluid heat exchanger" can also be adopted as the "first heat exchanger". By adopting such a "multi-fluid heat exchanger", it is possible to supply multiple types of "third heat exchange fluid" to the "first heat exchanger", targeting multiple types of "external heat sources". It is possible to absorb heat or dissipate heat.

Further, the amount of the low temperature side refrigerant Rc passing through the evaporator 14 and the amount of the low temperature side refrigerant Rc passing through the heat exchanger 16 due to the opening / closing of the on-off valves 17a to 17c and the change of the opening degree of the flow rate adjusting valves 13 and 15. Although the configuration for adjusting the above is described as an example, the configuration of the “first adjustment unit” is not limited to this. For example, "flow control valves" are arranged in the "flow path of the low temperature side refrigerant that can pass through the second heat exchanger" and the "flow path of the low temperature side refrigerant that can pass through the sixth heat exchanger", respectively. It is also possible to adopt a configuration in which the "first adjusting unit" is configured and the passing amount of the "low temperature side refrigerant" is adjusted by changing the opening degree of each "flow rate adjusting valve".

Further, the three-way valve 34a changes the flow rate of the "first flow path" and the "second flow path" of the heat medium liquid W3, and the three-way valve 34b changes the flow rate of the "third flow path" of the heat medium liquid W3. Although the configuration for changing the above is described as an example, the configuration of the “second adjustment unit” is not limited to this. For example, a "flow rate adjusting valve" is arranged in each of the "first flow path", "second flow path", and "third flow path" to form a "second adjusting section", and each "flow rate adjusting valve". It is also possible to adopt a configuration in which the flow rate of the "first flow path", the flow rate of the "second flow path", and the flow rate of the "third flow path" are adjusted by changing the opening degree of.

Further, although an example including a pump 31 composed of a liquid feed pump having a fixed pumping amount has been described, a configuration in which the heat medium liquid W3 is pumped by a liquid feeding pump having a variable pumping amount can also be adopted. Further, a configuration in which a "liquid" such as a heat medium liquid Wc, Wh, W3 is used as the "first heat exchange fluid", the "second heat exchange fluid", and the "third heat exchange fluid" will be described as an example. However, for any or all of the "first heat exchange fluid", "second heat exchange fluid" and "third heat exchange fluid", a configuration using "gas" such as inert gas or air is adopted. You can also do it.

Further, as the "first control mode", in addition to the control in the "third control mode" (operation in the first endothermic mode) and the control in the "fourth control mode" (operation in the second endothermic mode). , The configuration of the cold / temperature simultaneous temperature adjusting device 1 capable of control in the "fifth control mode" (operation in the heat dissipation mode) has been described as an example, but the control in the "fifth control mode" is not performed (. It is also possible to adopt a configuration (not operated in heat dissipation mode). Further, the cold / hot simultaneous temperature adjusting device 1 having a configuration using outside air (air around the cold / hot simultaneous temperature adjusting device 1) as an “external heat source” has been described as an example. However, instead of such a configuration, tap water has been described. , Various liquids (water) such as river water, well water and stored water, and snow and ice can also be adopted as an "external heat source". Further, it is also possible to adopt a configuration in which the floor, wall and ceiling of the place where the "simultaneous cooling / temperature adjusting device" is installed, and the mechanical equipment that generates heat during operation are used as the "external heat source".

In addition, an example in which a dual refrigeration cycle 2 having a low temperature side refrigeration circuit 2C and a high temperature side refrigeration circuit 2H is provided has been described. It is also possible to configure a "cold temperature simultaneous temperature control device" by providing a "multiple refrigeration cycle" such as a "primary refrigeration cycle". In this case, for example, a "three elements" equipped with three refrigeration circuits, "low temperature refrigeration circuit (low stage refrigeration circuit)", "medium temperature refrigeration circuit (middle stage refrigeration circuit)" and "high temperature refrigeration circuit (high stage refrigeration circuit)". In the "refrigeration cycle", when the "low temperature refrigeration circuit" is set to the "low temperature side refrigeration circuit", the "medium temperature refrigeration circuit" corresponds to the "high temperature side refrigeration circuit" and the "medium temperature refrigeration circuit" is set to the "low temperature side refrigeration circuit". Sometimes the "high temperature refrigeration circuit" corresponds to the "high temperature side refrigeration circuit".

1 Simultaneous cold / hot temperature control device 2 Dual refrigeration cycle 2C Low temperature side refrigeration circuit 2H High temperature side refrigeration circuit 3 Heat medium liquid circulation path 4 Operation unit 5 Display unit 6 Control unit 7 Storage unit 11/21 Compressor 12 Cascade condenser 13, 15 , 23 Flow control valve 14 Evaporator 16, 32, 33 Heat exchanger 17a to 17c On-off valve 22 Condenser 31 Pump 32a Blower 34a, 34b Three-way valve LC, LH Heat medium liquid circulation path Rc Low temperature side refrigerant Rh High temperature side refrigerant W3 , Wc, Wh Heat Medium Solution XC Cooling Target XH Heating Target

Claims (4)

It has a low temperature side refrigeration circuit and a high temperature side refrigeration circuit, and the low temperature side refrigerant in the low temperature side refrigeration circuit and the high temperature side refrigerant in the high temperature side refrigeration circuit are configured to be heat exchangeable in the first heat exchanger. The first heat exchange fluid supplied to the cooling target is configured to be coolable in the second heat exchanger of the low temperature side refrigeration circuit, and the second heat exchange fluid supplied to the heating target is of the high temperature side refrigeration circuit. A multi-dimensional refrigeration cycle configured to be heatable in the third heat exchanger,
Simultaneous cooling and temperature control provided with a control unit that controls the operation of the multiple refrigeration cycle according to the cooling set temperature at which the first heat exchange fluid should be cooled and the heating set temperature at which the second heat exchange fluid should be heated. It ’s a device,
A three-fluid heat exchanger capable of exchanging heat between the low temperature side refrigerant, the high temperature side refrigerant, and the third heat exchange fluid is provided as the first heat exchanger.
A fluid circulation path configured to allow circulation of the third heat exchange fluid, and
A fourth heat exchanger is provided so as to enable heat exchange between the third heat exchange fluid and an external heat source.
When the first condition of cooling the first heat exchange fluid and heating the second heat exchange fluid is satisfied, the control unit performs the first heat exchange of the third heat exchange fluid. The first control mode in which the cooling of the first heat exchange fluid by the low temperature side refrigeration circuit and the heating of the second heat exchange fluid by the high temperature side refrigeration circuit are executed while restricting the inflow to the vessel.
When the second condition that the first heat exchange fluid does not need to be cooled and the second heat exchange fluid is heated is satisfied, the inflow of the third heat exchange fluid into the first heat exchanger is satisfied. The cold / hot simultaneous temperature control device can be controlled by the second control mode in which the low temperature side refrigeration circuit is stopped and the second heat exchange fluid is heated by the high temperature side refrigeration circuit while allowing it. Cold and hot simultaneous temperature control device. The fifth heat is arranged so that heat can be exchanged between the first heat exchange fluid that has cooled the cooling target and the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger. With the exchanger,
It is possible to exchange heat between the low temperature side refrigerant that has exchanged heat with the high temperature side refrigerant in the first heat exchanger and the third heat exchange fluid that exchanges heat with the external heat source in the fourth heat exchanger. With the arranged sixth heat exchanger,
The first that adjusts the passing amount of the low temperature side refrigerant that has exchanged heat with the high temperature side refrigerant in the first heat exchanger through the second heat exchanger and the passing amount of the low temperature side refrigerant through the sixth heat exchanger. Adjustment part and
The amount of passage of the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger through the fifth heat exchanger, the amount of passage of the third heat exchange fluid through the sixth heat exchanger, and the said. A second adjusting unit for adjusting the passing amount of the third heat exchange fluid through the first heat exchanger is provided.
In the fluid circulation path, the third heat exchange fluid that has exchanged heat with the external heat source in the fourth heat exchanger passes through the fifth heat exchanger and then passes through the sixth heat exchanger and the first. A first flow path that does not pass through the heat exchanger, and a second that the third heat exchange fluid passes through the sixth heat exchanger without passing through the fifth heat exchanger and does not pass through the first heat exchanger. It is provided with two flow paths and a third flow path through which the third heat exchange fluid passes through the first heat exchanger without passing through the fifth heat exchanger and the sixth heat exchanger.
The second adjusting unit includes the flow rate of the first flow path of the third heat exchange fluid, the flow rate of the second flow path of the third heat exchange fluid, and the third flow path of the third heat exchange fluid. By adjusting the flow rate of the third heat exchange fluid, the amount of passage of the third heat exchange fluid through the fifth heat exchanger, the amount of passage of the third heat exchange fluid through the sixth heat exchanger, and the amount of the third heat exchange fluid of the third heat exchange fluid. It is configured so that the amount of passage through the first heat exchanger can be adjusted.
The control unit adjusts the temperature at the same time for cooling the first heat exchange fluid to the cooling set temperature when both the cooling of the first heat exchange fluid and the heating of the second heat exchange fluid are performed. The third condition that the cooling treatment load of the apparatus is smaller than the heat treatment load of the cold temperature simultaneous temperature adjusting device for heating the second heat exchange fluid to the heating set temperature is satisfied, and the external heat source When the fourth condition that the temperature is equal to or less than the predetermined cooling set temperature and the first temperature or less is satisfied, the second adjusting unit closes the third flow path and reaches the cooling set temperature. Accordingly, the low temperature side refrigerant is the first while adjusting the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid to the second adjusting unit. (2) A third control mode in which the first adjusting unit adjusts the low temperature side refrigerant so that the amount of passage through the sixth heat exchanger is larger than the amount of passage through the heat exchanger.
When the third condition is satisfied and the fifth condition that the temperature of the external heat source is higher than the cooling set temperature and is equal to or higher than the predetermined second temperature is satisfied, the second adjusting unit is subjected to the above. The second flow path is closed, and the flow rate of the first flow path of the third heat exchange fluid and the flow rate of the second flow path of the third heat exchange fluid are set according to the cooling set temperature. While adjusting to the adjusting unit, the amount of passage of the low temperature side refrigerant through the second heat exchanger is larger than the amount of passage of the low temperature side refrigerant passing through the sixth heat exchanger. 1. The cold / hot simultaneous temperature adjusting device according to claim 1, wherein the cold / hot simultaneous temperature adjusting device can be controlled by the fourth control mode in which the adjusting unit adjusts. When the control unit cools the first heat exchange fluid and heats the second heat exchange fluid, the sixth condition that the cooling treatment load is larger than the heat treatment load is satisfied. And when the seventh condition that the temperature of the external heat source is lower than the temperature of the third heat exchange fluid that exchanges heat with the external heat source and is equal to or lower than the predetermined third temperature is satisfied, the third flow. The path is closed to the second adjusting portion, and the flow rate of the second flow path of the third heat exchange fluid is larger than the flow rate of the first flow path of the third heat exchange fluid. Simultaneously with the cold temperature in the fifth control mode in which the first adjusting unit is adjusted so that the low temperature side refrigerant passes through both the second heat exchanger and the sixth heat exchanger while being adjusted by the second adjusting unit. The cold / temperature simultaneous temperature control device according to claim 2 , wherein the temperature control device is configured to be controllable. A blower fan for blowing ambient air as the external heat source to the fourth heat exchanger is provided.
Any of claims 1 to 3, wherein the control unit controls the blower fan to change the amount of blown air to adjust the amount of heat exchange between the third heat exchange fluid and the air in the fourth heat exchanger. The cold and hot simultaneous temperature control device described in Kana.

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