TW200936965A - Ice making and air conditioning system utilizing supercooled water - Google Patents

Abstract

A common heat pump is used in melting the ice nucleus for removing the limitations of the built-in water-cooling-type or pre-heating-type freezer etc. used in production of supercooled water. An ice-making air conditioning system with wide range of applications is used to enable different operation modes on air conditioning loads. The invented ice making and air conditioning system includes a salt water freezer; a cooling water by-pass pipeline installed in the return flow-path from a heat-storage tank to a supercooling heat exchanger; and a heat pump for melting the ice nucleus and including a first heat exchanger and a second heat exchanger. The heat pump absorbs the cooling energy from the salt water circulated from the supercooling heat exchanger by the first heat exchanger. Moreover, the second heat exchanger is used to supply the thermal energy from the condenser to the cooling water in the cooling water by-pass pipeline. Thus, the ice nuclei of cooling water in the return flow-path is molten.

Description

。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The ice making device, in particular, relates to ice making and air conditioning systems that use cooling water. [Prior Art] It is cooled to a crucible by a freezer. (The following low-temperature supercooled water® is applied to an ice-cooling state by applying an impact or the like to release the supercooled state, and the ice-making ice is stored in a heat storage tank. The cold water in the trough refluxing to the supercooling heat exchanger contains fine ice nuclei. Even if the filter is removed through the ice core, the ice core remains, causing the heat transfer portion of the supercooling heat exchanger to freeze and stop the ice making system. In order to solve this problem, various techniques have been proposed for the melting of the ice core. (Patent Document 1) 曰本特开平 6 — 257925 "Supercooling Water Manufacturing Apparatus", which is provided with a preheating heat exchanger for recirculation from a heat storage tank. In the flow path of the cooling heat exchange water, the entire amount of water is passed, and the ice core is melted to prevent the heat transfer tube in the heat exchanger from being supercooled by heat exchange of the cold water in the preheating heat exchanger. In this device, since the preheating heat exchanger uses a part of the cooling water of the water condenser, the cold water machine for the production of the supercooled water must be water-cooled. (Patent Document 2) 3 — 241251" Calling ice heat storage = set, 纟 returning from the heat storage tank to the water flow path of the supercooling heat exchanger; ° liquid and liquid heat exchange 11 ' by returning water to the supercooling heat exchanger 6 200936965 and passing The refrigerant of the condenser is “heat exchanged” to prevent the water in the heat transfer tube. „ A special freezer for storing the heat exchanger for recovering the condensation in the refrigerant circuit. 3) 曰太44卩日τ setting, special opening + 1〇—185248 "Ice storage device with preheater for refrigerant heating to the expansion valve, cold: heating the ice to melt to prevent the water bundle in the heat transfer tube In this device, a special freezer including a preheater is also required. 于 (Patent Document 4) Nissan 1Λ 0 ”* J Bent Kyu 10-89729 “Ice storage device and operating water using cooling water沐._ ^ ′′′ An auxiliary cooler is provided in the flow path from the regenerator to the water of the subcooling heat exchanger, by recirculating the water to the heat exchange & the water and the refrigerant passing through the auxiliary cooler Exchange to prevent freezing of water in the heat transfer tube. A first object of the present invention is to eliminate the restriction on the cooling of the manufactured cooling water by the use of a conventional heat pump in the melting of the ice core, the water-cooling of the East Machine, or the preheating of the preheater. The second object of the present invention is to Provided to provide a wide range of ice making and air conditioning systems for use in various operating modes corresponding to air conditioning loads. To solve the above problems, the present invention provides an ice making and air conditioning system using supercooled water as its basic form. It is an ice making and air conditioning system in which cooling water is produced in a supercooling heat exchanger and ice that has been cooled by cooling water is stored in a heat storage tank, and is characterized in that a brine freezer is provided and manufactured. C low temperature brine and supplied to the supercooling heat exchanger; the cold water bypass flow path is placed on the return flow path from the regenerator to the subcooling heat exchanger; 200936965 I; and the ice core melting heat pump, including compression a machine, a condenser, an expansion valve, a 7th heater, a first heat exchanger adjacent to the evaporator, and a second hot parent adjacent to the condenser; the heat is absorbed from the supercooler through the first heat exchanger Hot Cooling the cold water of the converter, and supplying the heat energy from the condenser to the cold water in the cold water bypass passage through the second heat exchanger, thereby making the ice core of the cold water contained in the return flow path melt. Further, the additional feature is that the warm water is stored in the 'water tank' in advance by the electric heater, and the heat transfer portion of the supercooling heat exchanger is bundled and frozen by the warm hydrolysis. According to the above configuration, according to the present invention, (1) by using a conventional heat pump to melt the ice core, it is possible to eliminate the need to select an ice making and air conditioning system for the type of refrigerator in which the cooling water is produced. (2) Since it is possible to build an ice making and air conditioning system using only commonly used machines, it is possible to build an inexpensive system and quickly complete the setting work. (3) Since the supercooling heat exchanger for ice making can be used as a warm water heating device for heating, it is possible to use one freezer for ice heat storage operation, warm water heat storage operation, cold water additional operation, and warm water. In the operation of the four modes of the additional operation, the monthly b system realizes a wide range of applications corresponding to the air conditioning load. According to still another preferred embodiment of the present invention, the cold and warm water direct heat exchanger can be disposed in parallel with the supercooling heat exchanger, and the cold energy or heat energy absorbed by the cold warm water direct heat exchanger can be supplied to the air conditioning load. Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. [Embodiment] FIG. 1 is a view showing an implementation of an ice-making air-conditioning system according to a basic embodiment of the present invention. 8 200936965 Example 'steaming cold water; salt water m cooled by the east machine i is sucked and sent to the supercooling heat exchanger 4, The inside of the cooling heat exchanger 4 is subjected to heat exchange to become a relatively low temperature (for example, a subcooled water of 22 is changed to ice in the ice making device 5), and the produced ice is supplied to the heat storage tank 3. The heat load side outlet 3a near the bottom of the heat storage tank 3 draws cold water from the cold fruit 6 and transfers it to the air conditioning load 22 such as a fan coil to cool the rooms in the room. ❹ On the other hand, near the bottom of the heat storage tank 3 The return-side outlet 31) is cooled by the heat storage pump 14, passes through the ice core removal filter 8, and is sent to the supercooling heat exchanger 4 to complete the ice-making heat storage cold water circulation flow path. As described above, only the ice core removing filter 8 is used, and the removal of the ice core is insufficient, and the residual ice core causes the heat transfer portion of the supercooling heat exchanger 4 to freeze. Therefore, the basic form of the present invention provides the ice-making air-conditioning system capable of removing the ice core and thawing when the supercooling heat exchanger is frozen, using the following three features. / A : A cold water bypass flow path is provided in the middle of the return flow path from the regenerator to the subcooling heat exchanger. In Fig. 丨, a cold water bypass flow path p is provided in the middle of the return flow path W from the regenerator 3 to the supercooled heat exchanger 4. B. In place of the preheating heat exchanger or the auxiliary cooler, a compressor comprising a compressor, a condenser, an expansion valve, an evaporator, and a first heat exchanger adjacent to the evaporator and a second heat exchanger adjacent to the condenser The ice core melts with a heat pump. 1) The ice core melting heat pump 2 includes a compressor 51, a condenser 52, an expansion valve 53, an evaporator 54, and a first exchanger 55 adjacent to the evaporator and a second heat exchanger 56' adjacent to the condenser. The cold water from the subcooling heat exchange 9 200936965 is absorbed by the first heat exchanger 55 and the thermal energy from the condenser 52 is supplied to the cold water in the cold water bypass flow path P through the second heat exchanger 56. Thereby, the ice core contained in the cold water of the return flow path W can be dissolved. In the cold water bypass flow path P, a heat recovery cold water pump 11, an ice core melting pump 12, and an ice core melting control valve 15 are provided to control the start and stop of the pump and the opening and closing of the valve to optimally melt the ice core. Implemented. The cooling capacity of the ice core melting heat pump 2 for melting the ice core in the return flow path W is about 0.25 to the freezing capacity 1 of the brine freezer 1.

❹ C: The warm water is stored in the warm water tank 60 by the electric heater 61 in advance, and when the heat transfer portion of the heat exchanger 4 is frozen, the warm water is used to release the freezing. At the time of the freeze release operation, the switching valve 66 is closed and the switching valve 67 is opened. During the heat storage operation, the switching valve 66 is opened and the switching valve 67 is closed. Fig. 2 is a view showing an embodiment in which Fig. 1 is modified, and the warm water tank 60 of Fig. 1 is moved into the bypass flow path p to be assembled. The heat pump 2 of Fig. 2 omits the internal view and is not indicated by the square HP. The electric heater 61 is housed in the warm water tank 6 of Fig. 2, and is controlled to be about 3 〇β when the freezing is released (to prevent the temperature of the warm water tank from being too low. The ice core is melted by the pump 12 and melted by the ice core. The operation of the control valves i5a, 15b supplies warm water to the bypass flow path p and controls the cold water temperature of the supercooling heat exchanger inlet to be approximately 〇5 ton. The symbols 16, 17 are switched 阙. The warm water tank is used as a buffer, so the control of the melting temperature of the ice core is improved. The reason is as follows: In order to ensure the true ice core melting and energy efficiency, the ice core melting temperature is required to be controlled within the range of ±〇, In particular, if the temperature is excessively biased toward the low temperature side, the frequency is increased directly. 200936965 When the freeze release operation is performed, the switching valve 16 is closed, the switching valve 17 is opened, and the warm water tank 60, the supercooling heat exchanger 4, and the ice making device 5 are provided. The flow path of the circulation is released by the cooling water heat exchanger 4 by about 3 (the warm water of TC. Fig. 3 shows an application example of the present invention, and Fig. 4 to Fig. 1 shows the operation plate type. The device changes the brine freezer i of Figure j to brine hot chest cold The unit 1 is additionally provided with a cold and warm water direct heat exchange $2 散热 散热 heat-dissipating heat exchanger 21, and the same reference numerals as those in Fig. 1 indicate the same constituent elements. The cold-warm water direct-feeding heat exchanger 2 追加 added to the port Fig. 3, and supercooling The heat exchangers 4 are inserted in parallel in the brine flow path, and the cold energy or the heat energy is supplied to the secondary air conditioning load system s by heat exchange, and is added to the additional operation described later (operation requiring additional cooling) When it is started, it will be added to the additional cooling or the added heat-dissipation heat exchange circle... ^1 When the small heat is double-heated, the cold energy is supplied to the air-conditioning load system s, #When the warm water is cooled, the heat is supplied to the air-conditioning load. System S. The inlet and outlet of the heat storage tank 3 are different depending on the heat of the ice and the heat of the warm water. When the ice is dissipated, the cold water is taken from the lower part, and after the heat exchange heat exchange is performed, the hot water of the high temperature is sent back to the heat storage tank. Above. When warm water is dissipated, warm water is taken from the upper part of the water tank to maintain the temperature in the heat storage tank. After the heat exchange is performed in the heat exchanger, the warm water of the low temperature is sent back to the remaining part of the heat storage tank. Symbol, separate table : 23 series additional secondary system; 24 series cooling secondary pump; 25 series heat dissipation - secondary pump; w, % ice animal heat - warm water heat storage switching valve; 27a, 27b ice cooling electric switching valve (back); 28a, 28b Ice cooling - , , , _ no heat switching valve (to); 11 200936965 29a, 29b ice storage - additional operation switching valve; 3〇a, 3卟 heating heating parent exchanger outlet temperature control valve; 31a, 31b The heat-dissipating heat exchanger' and the degree-control valve are shown in Fig. 4 to Fig. 10, and the flow paths activated in each operation are indicated by thick lines, and the system of thin wires is stopped. Fig. 4 shows Ice storage operation mode; ® 5 series means freeze release operation mode; Fig. 6 is a table, and ice heat dissipation operation mode; Fig. 7 shows ice heat and cold water additional operation check type. ❹® 8 series indicates warm water heat storage operation mode; The warm water cooling operation mode is shown in Fig. 10, and the warm water cooling and warm water additional operation mode is shown in Fig. 10 . The operation of each switching valve in each mode is set as follows: Ice heat storage-warm water heat storage switching valve 26 (for ice heat storage: 26a - closed, 26b - open 'warm water heat storage: 26a-open, 26b-closed); ice heat dissipation A warm water cooling switch valve (back) 27 (Ice heat dissipation: 27a ~ open, 27b ~ closed 'warm water cooling: 27a_ closed, 27b_ open); ice heat a warm water cooling switch valve (to) 28 (ice heat dissipation : 28a - open, φ 28b - closed 'warm water heat dissipation: 28a - closed, 28b - open); ice heat storage one additional operation switching valve 29 (ice storage: 29a open, closed, additional: 29a - closed , 29b-open). In the ice heat storage operation mode of the 囷4, the brine flow path B including the supercooling heat exchanger 4 and the bypass flow path W, the bypass flow path p including the heat pump 2, and the warm water tank 60 are activated, and the cold temperature is maintained. The water direct heat exchanger 2, the heat radiation heat exchanger 21, and the air conditioning load 22 are in a stopped state. In the Kangjie release operation mode of Fig. 5, only the flow path from the warm water tank to the ice making device 5 is activated, and the other flow paths are stopped. 12 200936965 In the ice cooling operation mode of Fig. 6, the heat dissipation system D including the heat dissipation heat exchanger 2i, the secondary air conditioning load system s, and the air conditioning load 22 are activated, and the cold air is supplied from the fan coil to the room. ▲In the ice cooling and cold water addition operation mode of the ® 7, the cold and warm water is directly sent to the flow path of the heat exchanger 20, and the heat dissipation system including the heat dissipation heat exchanger 21, the secondary air conditioning load system s, and the air conditioning load 22 are activated. Supply cold air from the fan coil to the indoors. In the warm water heat storage mode of Fig. 8, the salt water flow path and the return flow path W including the supercooling heat exchanger* are activated, and the other flow paths are stopped. In the warm water cooling mode of Fig. 9, the heat dissipation heat exchanger 2 includes a dispersion system 〇, the secondary air conditioning load system S, the air conditioning load 22 is activated, and the second fan coil supplies heating to the room. In the warm water cooling and warming water addition mode of FIG. 10, the cold and warm water is directly sent to the flow path of the heat exchanger 20, and the heat dissipation system D including the heat dissipation heat exchanger 21, the secondary side air conditioning load system S, and the air conditioning load 22 are activated. Fan coils and other heating supplies to the interior. As described above, in the ice-making air-conditioning system of Fig. 3, it is possible to operate in four modes of the heat storage operation, the warm water heat storage operation, the cold water addition operation, and the warm water addition operation by selecting one unit for the activation unit. The ice junction of the heat transfer surface is effectively prevented, and the optimum air conditioner corresponding to the air conditioning load can be provided. As described in detail above, by using the ice-making air conditioning system of the present invention, the refrigeration system for manufacturing the supercooled water is limited to the water-cooled or preheater built-in by using the commonly used hot fruit in the melting of the ice core. Necessity can make the construction of the system of 200936965 f air-conditioning system I easy and can complete the setup project quickly. In addition, a cold-cooling heat exchanger can be used to produce a cold-cooling machine using a brine heat pump cooler. By using a supercooling heat exchanger and a warm water heating heat exchanger, it is possible to add ice heat storage, warm water heat storage, and cold water to the heat source of the table. In addition to the four modes of warm water addition, #, the technical value is significant. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow path diagram showing a basic form of an ice making and air conditioning system using the present invention. ❹ Fig. 2 is a flow path diagram showing a modification of the example of the figure. Fig. 3 is a flow path diagram showing an embodiment of the step of the steps of Fig. 3; Fig. 4 is a flow path diagram showing an ice heat storage operation mode of the example of Fig. 3; Fig. 5 is a flow path diagram showing a freeze release operation mode of the example of Fig. 3; Fig. 6 is a flow path diagram showing an ice heat dissipation operation mode of the example of the circle 3. Fig. 8 is a flow path diagram showing the warm water storage and cooling operation mode of the example of Fig. 3; Fig. 9 is a view showing a flow path of the warm water cooling operation mode of the example of Fig. 3. The road map diagram shows the flow of the warm water cooling and warming water addition mode of the example of Fig. 1 [Main component symbol description] brine cold card machine 1 brine heat pump 2, ice melt heat pump 1 heat storage tank 200936965 4 5 20, 21 22 51 52 53 54 Ο 55 , 56

60 61 R

HP

B

P

W 〇

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S Subcooling Heat Exchanger Ice Machine Heat Exchanger Air Conditioning Load Compressor Condenser Expansion Valve Evaporator Heat Exchanger Warm Water Tank Electric Heater Brine Freezer Heat Pump Brine Flow Path Bypass Flow Path Return Flow Cooling System Air Conditioning Load System 15

Claims (1)

200936965 X. Patent application: 1. An ice making and air conditioning system using cooling water. The cooling water is produced in a supercooling heat exchanger and the ice used in cooling water is stored in a heat storage tank. The ice and air conditioning system is characterized by: a brine freezer for producing a brine lower than 〇°C and supplied to the supercooling heat exchanger; a cold water bypass flow path disposed from the regenerator to the subcooling heat exchangeΟ The middle of the return flow path; and the heat pump for ice core melting, including a compressor, a condenser, an expansion valve, an evaporator, a second heat exchanger adjacent to the evaporator, and a second heat exchanger adjacent to the condenser The heat pump absorbs cold energy from the brine of the supercooling heat exchanger through the first heat exchanger, and supplies the heat energy from the condenser to the cold water in the cold water bypass passage through the second heat exchanger; This 'melts the ice core contained in the cold water in the return flow path. ❹ 2· The ice making and air conditioning system of claim 1, wherein the warm water from the warm water tank using the electric heater is supplied to the return flow path. 3. For the ice making and air conditioning system of claim i or item 2, wherein the cold and warm water is sent directly to the heat exchanger and the supercooling heat exchanger is arranged side by side to absorb the cold water sent directly to the heat exchanger. Cold or thermal energy is supplied to the air conditioning load. 4. For the ice making and air conditioning system of claim 3, wherein the heat transfer heat exchange 16 200936965 is arranged in the return flow path from the work load to the heat storage tank, and the heat exchanger for heat dissipation is used for warm water or Cooling of cold water. Eleven, circle: as the next page 17