CN111811157A - Heat exchange equipment, water heaters and air conditioners - Google Patents

Abstract

The invention provides heat exchange equipment, a water heater and an air conditioner, and relates to the technical field of electric appliances. The heat exchange equipment comprises a compressor, a first condenser, a second condenser and an evaporator, wherein the compressor is provided with a compressor outlet, a first inlet and a second inlet; the second end of the first condenser is connected with the first end of the second condenser, and the second end of the second condenser is connected with the first end of the evaporator; when the heat exchange equipment is in a heating state, the first end of the first condenser is connected with the outlet of the compressor, and the second end of the evaporator is connected with the first inlet of the compressor; and a gas-liquid separation assembly connected with the second inlet is further arranged between the first condenser and the second condenser, the gas-liquid separation assembly is used for separating gas and liquid in a fluid medium and sending the liquid into the second condenser, the gas is sent into the compressor through the second inlet, and the heating capacity of the heat exchange equipment is high.

Description

Heat exchange equipment, water heaters and air conditioners

technical field

The invention relates to the technical field of electrical appliances, in particular to a heat exchange device, a water heater and an air conditioner.

Background technique

Heat exchange equipment is a device that allows heat to flow from one heat source to another, and is often used in air conditioners, water heaters and other equipment.

Taking a water heater as an example, the water heater includes heat exchange equipment and heat exchange pipes; the heat exchange equipment usually includes a compressor, a condenser, a throttling part, an evaporator and a fluid medium circulating in the refrigerant pipes connected through the refrigerant pipes; The hot water pipe is connected with the condenser, and water to be heated is arranged in the hot water exchange pipe. When heating is required, the compressor compresses the fluid medium into high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the condenser, causing the gas to exchange heat with the water in the water exchange pipe; after the fluid medium is cooled and condensed, the evaporator absorbs heat and releases it in a gaseous state. Entering the compressor for the next cycle, the water heat absorption temperature rises.

However, the heating capacity of the above-mentioned heat exchange equipment is poor.

SUMMARY OF THE INVENTION

The present invention provides a heat exchange device, a water heater and an air conditioner to overcome the problem of poor heating capacity of the heat exchange device in the related art.

The present invention provides a heat exchange device, comprising: a compressor, a first condenser, a second condenser and an evaporator, the compressor is provided with a compressor outlet, a first inlet and a second inlet; the first condenser The second end of the second condenser is connected to the first end of the second condenser, and the second end of the second condenser is connected to the first end of the evaporator; the heat exchange equipment has a heating state, when the When the heat exchange device is in a heating state, the first end of the first condenser is connected to the outlet of the compressor, the second end of the evaporator is connected to the first inlet of the compressor, and the first end of the first condenser is connected to the first inlet of the compressor. The fluid medium compressed by the compressor enters the first condenser; a gas-liquid separation component connected to the second inlet is also provided between the first condenser and the second condenser, and the gas-liquid separation The assembly is used to separate gas and liquid in the fluid medium and send the liquid to the second condenser, and the gas is sent to the compressor from the second inlet.

The heat exchange equipment as described above, wherein the gas-liquid separation component comprises: a flasher, the flasher is connected to the second end of the first condenser and the first end of the second condenser; A supplementary gas pipeline, one end of the supplemental gas pipeline is connected with the flasher, and the other end of the supplemental gas pipeline is connected with the second inlet of the compressor.

The heat exchange device as described above, wherein the flasher includes a casing, and the casing is provided with a first flasher port, a second flasher port and a third flasher port, the first flasher port and the third flasher port are provided on the casing. A flasher port is connected to the second end of the first condenser, the second flasher port is connected to the supplemental gas pipeline, and the third flasher port is connected to the second end of the second condenser The first end is connected; the second flasher port is located on the top of the housing, and the first flasher port and the third flasher port are located on the housing away from the second flasher the bottom of the device port.

In the heat exchange equipment as described above, wherein, a one-way valve is further provided on the gas supply pipeline, so as to make the gas flow from the flash generator to the second inlet.

The above heat exchange equipment, wherein the gas-liquid separation component comprises a first expansion valve, and two ends of the first expansion valve are respectively connected to the second end of the first condenser and the first flash valve device port.

The above heat exchange device, wherein the heat exchange device has a cooling state, and when the heat exchange device is in a cooling state, the first end of the first condenser is connected to the first inlet of the compressor , the second end of the evaporator is connected to the compressor outlet; the fluid medium compressed by the compressor enters the evaporator, and then the fluid medium enters the flasher through the second condenser Carry out gas-liquid separation, the liquid after gas-liquid separation enters the first condenser, and the gas after gas-liquid separation enters the compressor through the second inlet.

The heat exchange device as described above, wherein the heat exchange device comprises a four-way valve, the four-way valve is provided with a first port, a second port, a third port and a fourth port, and the first port is connected to the the compressor outlet is connected, the second port is connected with the first inlet of the compressor, the third port is connected with the second end of the evaporator, and the fourth port is connected with the first inlet The first end of the condenser is connected; when the heat exchange device is in a heating state, the first port is connected to the fourth port, and the second port is connected to the third port; When the thermal device is in a cooling state, the first port is connected to the third port, and the second port is connected to the fourth port.

The above heat exchange device, wherein the heat exchange device further comprises a second expansion valve, the second expansion valve is connected to the second end of the second condenser and the first end of the evaporator.

The present invention provides a water heater, comprising: a water exchange pipe and the heat exchange device, wherein the hot water exchange pipe is connected with the first condenser and the second condenser; the second condenser is located in the The upstream position of the first condenser in the direction of water flow.

The present invention provides an air conditioner, comprising: a heat exchange air duct and the heat exchange device, the heat exchange air duct is connected to the first condenser and the second condenser; the second condenser is located at The upstream position of the first condenser along the air flow direction.

The heat exchange equipment, the water heater and the air conditioner provided by the present invention can realize the circulating flow of the fluid medium by arranging the compressor, the first condenser, the second condenser and the evaporator. Wherein, the first condenser and the second condenser are connected in series to achieve rapid heat exchange, and at the same time, the subcooling degree of the fluid medium can be improved, that is, the heat exchange amount of the fluid medium at the first condenser and the second condenser can be improved. . There is also a gas-liquid separation component connected to the second inlet of the compressor between the first condenser and the second condenser; when the heat exchange equipment works, the fluid medium compressed by the compressor becomes a high temperature and high pressure state and enters the first condenser The fluid medium exchanges heat with the element to be heated in the first condenser and releases heat and condenses, the cooled fluid medium enters the gas-liquid separation component, and the separated gas enters the compressor. The separated liquid can be further subcooled by the second condenser, and the heat release of the fluid medium becomes higher. The supercooled fluid medium enters the compressor through the evaporator. During the compression process of the compressor, the gas separated from the gas and liquid is mixed for secondary compression, which improves the flow rate of the fluid medium at the first condenser and the second condenser, and further increases The heat exchange of the fluid medium at the first condenser and the second condenser is improved, that is, the heating capacity of the heat exchange device is improved. At the same time, after the air supply, the exhaust temperature of the compressor decreases, and the subcooling degree of the refrigerant flowing out from the second condenser becomes higher, which helps to reduce the dryness of the fluid medium entering the evaporator and improves the fluid medium in the evaporator. Especially when the ambient temperature is low, the low temperature heating capacity of the heat exchange equipment is improved. And by supplying air for the compressor, the compression ratio of the compressor can be increased, the input power of the compressor is increased, and part of the heat is provided for the heat exchange equipment. That is to say, the heat exchange equipment provided by the present invention improves the heating capacity of the heat exchange equipment from various aspects.

Description of drawings

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the following specific embodiments.

1 is a schematic structural diagram of a heat exchange device provided by an embodiment of the present invention;

2 is a schematic structural diagram of another heat exchange device provided in an embodiment of the present invention in a heating state;

3 is a schematic structural diagram of another heat exchange device provided in an embodiment of the present invention when it is in a refrigerating state;

FIG. 4 is a schematic structural diagram of the flasher in FIGS. 1 , 2 and 3 .

Description of reference numbers:

10: compressor; 11: compressor outlet; 12: first inlet; 13: second inlet;

20: the first condenser;

30: the second condenser;

40: evaporator;

50: gas-liquid separation assembly; 51: flasher; 511: housing; 512: first flasher port; 513: second flasher port; 514: third flasher port; 52: air supply pipeline ; 53: The first expansion valve; 54: One-way valve;

60: the second expansion valve;

70: four-way valve; 71: first port; 72: second port; 73: third port; 74: fourth port.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the following specific embodiments.

When the heat exchange equipment is in the heating state, the fluid medium, that is, the refrigerant, is compressed by the compressor into a gaseous state of high temperature and high pressure. The high temperature and high pressure gaseous fluid medium enters the condenser and exchanges heat with the element to be heated, and the element to be heated absorbs heat The temperature rises, and at the same time, the fluid medium releases heat and turns into a liquid at low temperature and high pressure. The fluid medium then enters the evaporator through throttling and depressurization. The fluid medium absorbs the heat in the environment in the evaporator and becomes gaseous and re-enters the compressor for the next step. cycle. However, the heat exchange amount of the heat exchange equipment in the evaporator and the condenser is small, resulting in poor heating capacity of the heat exchange equipment, especially in a low temperature environment, it is difficult for the fluid medium in the evaporator to absorb heat from the environment.

In view of this, in this embodiment, the number of condensers is increased, for example, a first condenser and a second condenser are arranged in series. The large temperature difference between the first condenser and the object to be heated can achieve rapid heating, and the second condenser can further heat the object to be heated. The heating element makes the fluid medium located in the second condenser further release heat and supercool, and the heat exchange heat of the fluid medium at the first condenser and the second condenser becomes higher; A gas-liquid separation component is set between the condensers, so that the separated liquid can enter the compressor for secondary compression, and the separated liquid enters the second condenser for subcooling; the separated gas and the gas entering the compressor from the evaporator Two-stage compression after mixing can reduce the exhaust temperature of the compressor, increase the subcooling degree of the fluid medium in the second condenser, and reduce the dryness of the fluid medium in the evaporator, that is, improve the fluid medium in the evaporator. The heat absorption further improves the heating capacity of the heat exchange equipment.

FIG. 1 is a schematic structural diagram 1 of a heat exchange device provided by an embodiment of the present invention, FIG. 2 is a schematic structural diagram of another heat exchange device provided by an embodiment of the present invention in a heating state, and FIG. 3 is another heat exchange device provided by an embodiment of the present invention. Please refer to FIG. 1 to FIG. 3 for schematic structural diagrams of the heat equipment in the cooling state. This embodiment provides a heat exchange equipment, which includes: a compressor 10 , a first condenser 20 , a second condenser 30 and an evaporator 40 , The compressor 10 is provided with a compressor outlet 11, a first inlet 12 and a second inlet 13; the second end of the first condenser 20 is connected to the first end of the second condenser 30, and the second end of the second condenser 30 Connected with the first end of the evaporator 40; the heat exchange device has a heating state, when the heat exchange device is in a heating state, the first end of the first condenser 20 is connected to the compressor outlet 11, and the second end of the evaporator 40 is in a heating state. The end is connected to the first inlet 12 of the compressor 10, and the fluid medium compressed by the compressor 10 enters the first condenser 20; The gas-liquid separation component 50 is used to separate the gas and liquid in the fluid medium, and send the liquid to the second condenser 30 , and the gas is sent to the compressor 10 through the second inlet 13 .

Heat exchange equipment can be used in water heaters, air conditioners and other electrical appliances that require heating or cooling. Taking a water heater as an example, the water heater includes a heat exchange pipe and heat exchange equipment; the hot water exchange pipe can be in the shape of a coil, the hot water exchange pipe is connected to the heat radiating member in the heat exchange equipment, and the water to be heated is arranged in the hot water exchange pipe, exemplarily The hot water exchange pipe can be coiled outside the heat radiating element, the contact area is large, and the heat exchange efficiency is high. The hot water exchange pipe has a water inlet and a water outlet. The water to be heated enters the hot water exchange pipe from the water inlet, and the temperature of the heated water increases after absorbing the heat released by the exothermic element during the flow process, and the heated water after the temperature rises from the outlet The nozzle flows out for use in the next process.

The heat exchange equipment may include a compressor 10 , a first condenser 20 , a second condenser 30 and an evaporator 40 connected by refrigerant pipes. There is a fluid medium circulating in the refrigerant pipeline. The condensation temperature and evaporation temperature of the fluid medium are low, and the gas phase and liquid phase are prone to change, and heat is absorbed or released during the change of the gas phase and the liquid phase. According to the performance requirements of the water heater or air conditioner, the fluid medium can be any one of saturated hydrocarbons, azeotropic refrigerants, non-azeotropic refrigerants, and the like.

The compressor 10 may be a reciprocating compressor, a rotary compressor, or the like, for compressing the fluid medium into a gaseous state of high temperature and high pressure.

The gaseous fluid medium compressed by the compressor 10 enters the first condenser 20 and the second condenser 30 to condense and release heat. The first condenser 20 and the second condenser 30 can be spray condensers, packed condensers, air Any of the cooling condensers. The high-temperature and high-pressure fluid medium first exchanges heat with the water to be heated in the first condenser 20 to achieve rapid heating. Subsequently, the fluid medium can exchange heat with the water to be heated again in the second condenser 30, the temperature of the water to be heated is further increased, the temperature of the fluid medium is further decreased, the fluid medium is supercooled, and the temperature of the fluid medium in the first condenser is improved. 20 and the heat exchange in the second condenser 30.

The exothermic fluid medium becomes a low temperature liquid or gas-liquid mixed state, which then enters the evaporator 40 and absorbs heat from the environment, so that the fluid medium can enter the compressor 10 in a gaseous state, preventing the compressor 10 from compressing liquid and damaging the life of the compressor 10 . The evaporator 40 and the first condenser 20 and the second condenser 30 all belong to heat exchange parts, and their structures may be the same, and the evaporator 40 may also be of other types known to those skilled in the art. Among them, the supercooled fluid medium absorbs more heat in the evaporator 40 , especially for heat exchange equipment that heats in a low temperature environment, the low temperature heating capacity of the heat exchange equipment is improved.

In order to further improve the heating capacity of the heat exchange equipment, a gas-liquid separation assembly 50 is arranged between the first condenser 20 and the second condenser 30 in this embodiment, and the fluid medium flowing out from the first condenser 20 enters the gas-liquid separation Component 50, the gas separated by the gas-liquid separation component 50 enters the compressor 10.

In the compressor 10, the compressor 10 compresses the fluid medium entering from the side of the evaporator 40, and when it is compressed to the same pressure as the separated gas, the separated gas enters the compressor 10, and the compressor 10 performs two-stage compression In this way, the discharge volume of the compressor 10 can be increased, that is, the flow rate of the fluid medium passing through the first condenser 20 and the second condenser 30 is increased, and the heat exchange of the first condenser and the second condenser 30 is increased. At the same time, the temperature of the exhaust gas of the compressor 10 can be reduced, which is helpful to improve the subcooling degree of the fluid medium at the second condenser 30, so that the dryness of the fluid medium entering the evaporator 40 through the throttling expansion is reduced, and the fluid medium is also increased. The heat absorption capacity of the medium in the evaporator 40 improves the low temperature heating capacity of the heat exchange equipment used in the low temperature environment.

The heat exchange equipment provided in this embodiment also improves the degree of subcooling of the fluid medium by arranging the first condenser 20 and the second condenser 30 in series to achieve rapid heat exchange, and increases the flow rate of the fluid medium in the first condenser 20 The heat exchange with the second condenser 30 improves the heating capacity of the heat exchange equipment. In this embodiment, a gas-liquid separation assembly 50 connected to the second inlet 13 of the compressor 10 is also provided at the first condenser 20 and the second condenser 30 to realize the secondary compression of the compressor 10 and improve the fluid medium in the The flow rates at the first condenser 20 and the second condenser 30 further increase the heat exchange of the fluid medium at the first condenser 20 and the second condenser 30, that is, improve the heating capacity of the heat exchange equipment. At the same time, the temperature of the exhaust gas of the compressor 10 after air supplementation decreases, the degree of subcooling of the fluid medium flowing out from the second condenser 30 increases, and the dryness of the fluid medium entering the evaporator 40 decreases, which improves the efficiency of the fluid medium in the evaporator. The heat absorption capacity from the environment at 40, especially when the ambient temperature is low, improves the low temperature heating capacity of the heat exchange equipment. Furthermore, by supplying air to the compressor 10, the compression ratio of the compressor 10 can be increased, the input power of the compressor 10 is increased, and part of the heat is also provided for the heat exchange equipment.

The gas-liquid separation assembly 50 may be a gas-liquid separator well known to those skilled in the art, or the gas-liquid separation assembly 50 may include a gas pipeline, which is connected to the second end of the first condenser 20, and passes through the first The condenser 20 is then connected to the second inlet 13 of the compressor 10, and a throttling member is provided on the pipeline. The fluid medium flowing out of the first condenser 20 passes through the throttling element and the depressurized gas enters the compressor 10 after heat exchange with the second condenser 30 .

Considering that this embodiment is provided with the second condenser 30 capable of subcooling the fluid medium, the gas-liquid separation assembly 50 in this embodiment may include: a flasher 51 connected to the second condenser 20 of the first condenser 20 end and the first end of the second condenser 30 ; the supplemental gas pipeline 52 , one end of the supplemental gas pipeline 52 is connected to the flasher 51 , and the other end of the supplemental gas pipeline 52 is connected to the second inlet 13 of the compressor 10 . The flasher 51 is used as a heat exchange component, and the fluid medium can absorb heat in the flasher 51, and part of the fluid medium becomes gaseous. into the second condenser 30 .

FIG. 4 is a schematic structural diagram of the flasher in FIGS. 1 , 2 and 3 , please refer to FIG. 4 , the flasher 51 includes a casing 511 . The casing 511 is provided with a first flasher port 512 and a second flasher port 512 A generator port 513 and a third flasher port 514, the first flasher port 512 is connected to the second end of the first condenser 20, the second flasher port 513 is connected to the air supply line 52, and the third flasher port 512 is connected to the second end of the first condenser 20 The second flasher port 514 is connected to the first end of the second condenser 30; the second flasher port 513 is located at the top of the housing 511, and the first flasher port 512 and the third flasher port 514 are located on the housing 511 away from the first flasher port 511. Two flasher ports 513 on the bottom.

A flash chamber is formed in the casing 511, and the flash chamber has a relatively large volume. When the fluid medium enters the casing 511 from the first flash device port 512, the pressure decreases, which can also cause part of the liquid fluid medium to become a gaseous fluid medium. Since the density of the gaseous fluid medium is lower than that of the liquid fluid medium, the second flasher port 513 connected to the gas supply pipeline 52 can be located at the top of the housing 511 to facilitate the outflow of gas; and considering the fluid entering the flasher 51 The medium and the liquid fluid medium flowing out of the flasher 51 have high density, and the first flasher port 512 connected to the first condenser 20 and the third flasher port 514 connected to the second condenser can be located in the housing 511 bottom of.

In order to facilitate the generation of steam, the number of the flashers 51 may include a plurality of parallel flash chambers, or a plurality of flashers 51 are arranged in parallel.

Further, a one-way valve 54 is also provided on the gas supply pipeline 52, which is used to make the gas flow from the flasher 51 to the second inlet 13, and can prevent the fluid medium in the compressor 10 from flowing back into the flasher 51, resulting in The fluid medium flows in series, and the operation safety of the heat exchange equipment is high.

The gas-liquid separation assembly 50 further includes a first expansion valve 53, and two ends of the first expansion valve 53 are respectively connected to the second end of the first condenser 20 and the first flasher port 512.

When the heat exchange equipment is heating, the first expansion valve 53 is throttled for the first time to reduce the pressure of the fluid medium flowing out from the first condenser 20, so as to prevent the flasher 51 from being subjected to high pressure, the safety of the flasher 51 is high, and the fluid The pressure of the medium is reduced, and it is easy to be heated and evaporated; at the same time, by adjusting the opening of the first expansion valve 53, the pressure difference between the two sides of the first expansion valve 53 can be increased, so as to meet the demand of the supply air volume of the supply gas pipeline 52. Exemplarily, when the opening of the first regulating valve 53 becomes smaller, the flow rate of the fluid medium flowing through the first regulating valve 53 becomes lower, the condensing pressure and the condensing temperature of the first condenser 20 become higher, and the The condensing pressure and condensing temperature become lower, the pressure difference and temperature difference between the two sides of the first regulating valve 53 increase, the gaseous fluid medium increases, and the air supply volume increases

It can be understood that when the condensing pressure and condensing temperature of the first condenser 20 become higher, the discharge temperature of the compressor 10 will also become higher. By reducing the opening degree of the first regulating valve 53, the amount of supplemental air can be increased, and after the compressor 10 performs two-stage compression, the exhaust temperature of the compressor 10 can be reduced, and the operation stability is high.

Optionally, in this embodiment, the opening of the first regulating valve 53 can be automatically adjusted according to the condensing temperatures of the first condenser 20 and the second condenser 30, which facilitates automatic balance of the heat exchange equipment and improves operation stability.

The first expansion valve 53 may be a thermal expansion valve, an electronic expansion valve, or the like.

It can be understood that a second expansion valve 60 is further provided between the second condenser 30 and the evaporator 40, and the second expansion valve 60 is connected to the second end of the second condenser 30 and the first end of the evaporator 40. The fluid medium after the first condenser 20 and the second condenser 30 becomes liquid at low temperature and high pressure. In order to facilitate the fluid medium in the evaporator 40 to absorb heat, a second expansion valve 60 is provided at the upstream position of the evaporator 40. The second expansion valve 60 The secondary throttling is used to reduce the pressure of the fluid medium, so that the fluid medium entering the evaporator 40 can be changed into a low-temperature and low-pressure gas-liquid two-phase state.

The second expansion valve 60 and the first expansion valve 53 may be the same, or may be a thermal expansion valve, an electronic expansion valve, or the like.

Considering that the flow direction of the fluid medium is opposite when the heat exchange device heats and cools, the heat exchange device provided in this embodiment may also have a cooling state to reduce the temperature of the to-be-cooled component, which may be air or water. Specifically, when the heat exchange device is in a cooling state, the first end of the first condenser 20 is connected to the first inlet 12 of the compressor 10, and the second end of the evaporator 40 is connected to the compressor outlet 11; The compressed fluid medium enters the evaporator 40, and then the fluid medium enters the flasher 51 through the second condenser 30 for gas-liquid separation, the liquid after gas-liquid separation enters the first condenser 20, and the gas after gas-liquid separation is separated by The second inlet 13 enters the compressor 10 .

When the heat exchange equipment is refrigerating, the high temperature and high pressure gaseous fluid medium compressed by the compressor 10 enters the evaporator 40, and exchanges heat with the component to be cooled in the evaporator 40 and cools down and condenses, and the condensed and cooled fluid medium passes through the second expansion valve. 60 The first throttling and depressurization becomes a mixed state of gas-liquid two-phase.

The fluid medium then enters the second condenser 30 and exchanges heat with the object to be cooled in the second condenser 30. At this time, the temperature of the fluid medium in the second condenser 30 differs greatly from the temperature of the object to be cooled. The cooling speed of the components is fast, and part of the fluid medium in the second condenser 30 absorbs heat and evaporates.

The fluid medium flowing out from the second condenser 30 enters the flasher 51 through the third flasher port 514 , and the gas generated in the flasher 51 enters the gas supply pipeline 52 through the second flasher port 513 and enters The compressor 10 performs secondary compression, the liquid in the flasher 51 flows out from the first flasher port 512, passes through the first expansion valve 53 for secondary throttling, and then enters the first condenser 20 for further overheating and evaporation, and the fluid medium is in the first condenser 20. The heat exchange capacity at the first condenser 20 and the second condenser 30 is high, and the cooling capacity of the heat exchange equipment is high; and the overheating of the fluid medium at the first condenser 20 can prevent the liquid fluid medium from entering the compressor 10 and liquid compression occurs, The service life of the compressor 10 is reduced.

Understandably, when the heat exchange preparation is in the cooling state, in order to increase the amount of supplemental air, the opening degree of the first expansion valve 53 may also be reduced. Optionally, in this embodiment, the opening degree of the first expansion valve 53 can be automatically adjusted according to the evaporation temperature of the first condenser 20 and the second condenser 30, so as to avoid the evaporation temperature of the first condenser 20 being too low and causing the first condenser 20 to be too low. The second condenser 20 is frosted or frozen, which is not conducive to the refrigeration of the heat exchange equipment.

In order to realize the switching between the heating state and the cooling state on the heat exchange device, the heat exchange device includes a four-way valve 70, and the four-way valve 70 can be of a type well-known to those skilled in the art. For example, the four-way valve 70 can include a main valve And the pilot valve, the pilot valve has two capillaries connected with the chambers on both sides of the main valve, the two capillaries flow the high-pressure fluid medium and the low-pressure fluid medium respectively, and the pressure difference between the high-pressure fluid medium and the low-pressure fluid medium controls the slide of the main valve. The sliding of the block can realize the switching of different pipeline connection states.

In this embodiment, the four-way valve 70 is provided with a first port 71 , a second port 72 , a third port 73 and a fourth port 74 . The first port 71 is connected to the compressor outlet 11 , and the second port 72 is connected to the compressor 10 . The first inlet 12 is connected, the third port 73 is connected to the second end of the evaporator 40, and the fourth port 74 is connected to the first end of the first condenser 20; when the heat exchange equipment is in the heating state, the first port 71 It is connected to the fourth port 74, and the second port 72 is connected to the third port 73; when the heat exchange device is in a cooling state, the first port 71 is connected to the third port 73, and the second port 72 is connected to the fourth port 74.

When the heat exchange device is in a heating state, the outlet of the compressor 10 is connected to the first end of the first condenser 20 , so that the high temperature and high pressure fluid medium can release heat at the first condenser 20 and the second condenser 30 . When the heat exchange device is in a cooling state, the outlet of the compressor 10 is connected to the evaporator 40 , so that the high temperature and high pressure fluid medium can release heat at the evaporator 40 and then absorb heat at the first condenser and the second condenser 30 . The four-way valve 70 can realize switching between cooling and heating on the heat exchange equipment, thereby simplifying the structure of the heat exchange equipment.

This embodiment provides a water heater, which includes: a water exchange pipe and a heat exchange device, and the hot water exchange pipe is connected to the first condenser 20 and the second condenser 30 .

The heat exchange pipe of the water heater can be in the shape of a coil, and the heat exchange pipe has water to be heated, which has a water inlet and a water outlet, and the water to be heated realizes heat exchange with the first condenser 20 and the second condenser 30 during the flow process. process. When the heat exchange equipment heats up, the first condenser 20 and the second condenser 30 emit heat, and the temperature of the water to be heated increases after absorbing the heat, so as to provide hot water for the next process.

During heating, due to the high temperature of the fluid medium at the first condenser 20, the first condenser 20 can be located upstream of the flow direction of the water to be heated, so that the water to be heated can first perform heat exchange with the first condenser 20, and the fluid The temperature difference between the medium and the water to be heated is large, and the heating effect is good.

It is understandable that when the heat exchange equipment is refrigerated, there is water to be cooled in the heat exchange tube, the first condenser 20 and the second condenser 30 absorb heat, and the water to be cooled can be cooled to provide low temperature water for the next process. At this time, the temperature difference between the fluid medium at the second condenser 30 and the water to be cooled is large, the water to be cooled first exchanges heat with the second condenser 30, the temperature difference between the fluid medium and the water to be cooled is large, and the cooling effect is good.

This embodiment also provides an air conditioner, which includes: a heat exchange air duct and a heat exchange device, and the heat exchange air duct is connected to the first condenser 20 and the second condenser 30 .

The first condenser 20 and the second condenser 30 can be located in the heat exchange air duct, so that the air can pass through the first condenser 20 and the second condenser 30 when flowing, the contact area is large, and the heat exchange effect is good.

Wherein, the first condenser 20 may be located at an upstream position in the air flow direction. When the heat exchange equipment is heating, the heat exchange air duct is provided with the gas to be heated, and the gas to be heated can first conduct heat exchange with the first condenser 20, the temperature difference between the gas to be heated and the fluid medium is large, and the heating effect is good. When the heat exchange equipment is refrigerating, the heat exchange air duct is provided with the gas to be cooled, the temperature difference between the fluid medium at the second condenser 30 and the gas to be cooled is large, and the cooling effect is good.

It should be noted that the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, a first feature being "above", "over" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature "below", "below" and "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

In the above description, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc. refer to the specific features, structures described in connection with the embodiment or example. , material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A heat exchange device, comprising: a compressor, a first condenser, a second condenser and an evaporator, the compressor is provided with a compressor outlet, a first inlet and a second inlet; The second end of the first condenser is connected with the first end of the second condenser, and the second end of the second condenser is connected with the first end of the evaporator; The heat exchange device has a heating state. When the heat exchange device is in a heating state, the first end of the first condenser is connected to the outlet of the compressor, and the second end of the evaporator is connected to the outlet of the compressor. The first inlet of the compressor is connected, and the fluid medium compressed by the compressor enters the first condenser; A gas-liquid separation component connected to the second inlet is also provided between the first condenser and the second condenser, and the gas-liquid separation component is used for separating gas and liquid in the fluid medium, and The liquid is fed to the second condenser and the gas is fed to the compressor from the second inlet. 2. The heat exchange equipment according to claim 1, wherein the gas-liquid separation component comprises: a flasher connected to the second end of the first condenser and the first end of the second condenser; A supplementary gas pipeline, one end of the supplemental gas pipeline is connected with the flasher, and the other end of the supplemental gas pipeline is connected with the second inlet of the compressor. 3 . The heat exchange device according to claim 2 , wherein the flasher comprises a casing, and the casing is provided with a first flasher port, a second flasher port and a third flasher port. 4 . The first flasher port is connected to the second end of the first condenser, the second flasher port is connected to the supplemental gas pipeline, and the third flasher port is connected to the second end of the first condenser. the first end of the second condenser is connected; The second flasher port is located on the top of the housing, and the first flasher port and the third flasher port are located on the bottom of the housing facing away from the second flasher port. 4 . The heat exchange device according to claim 2 , wherein a one-way valve is further provided on the gas supply pipeline, so as to allow the gas to flow from the flasher to the second inlet. 5 . 5 . The heat exchange equipment according to claim 3 , wherein the gas-liquid separation component comprises a first expansion valve, and two ends of the first expansion valve are respectively connected to the second ends of the first condenser. 6 . and the first flasher port. 6 . The heat exchange device according to claim 2 , wherein the heat exchange device has a cooling state, and when the heat exchange device is in a cooling state, the first end of the first condenser is connected to the the first inlet of the compressor is connected, and the second end of the evaporator is connected with the outlet of the compressor; The fluid medium compressed by the compressor enters the evaporator, and then the fluid medium enters the flasher through the second condenser for gas-liquid separation, and the liquid after gas-liquid separation enters the first condenser , the gas after gas-liquid separation enters the compressor through the second inlet. 7 . The heat exchange device according to claim 6 , wherein the heat exchange device comprises a four-way valve, and the four-way valve is provided with a first port, a second port, a third port and a fourth port, 8 . The first port is connected to the compressor outlet, the second port is connected to the first inlet of the compressor, the third port is connected to the second end of the evaporator, and the third port is connected to the second end of the evaporator. The four ports are connected to the first end of the first condenser; When the heat exchange device is in a heating state, the first port is connected to the fourth port, and the second port is connected to the third port; when the heat exchange device is in a cooling state, all the The first port is connected to the third port, and the second port is connected to the fourth port. 8 . The heat exchange device according to claim 1 , wherein the heat exchange device further comprises a second expansion valve, and the second expansion valve is connected to the second expansion valve of the second condenser. 9 . end and the first end of the evaporator. 9. A water heater, characterized in that it comprises a hot water exchange pipe and the heat exchange equipment according to claims 1-8, wherein the hot water exchange pipe is connected to the first condenser and the second condenser; The second condenser is located upstream of the first condenser in the water flow direction. 10. An air conditioner, characterized in that it comprises a heat exchange air duct and the heat exchange equipment according to claims 1-8, wherein the heat exchange air duct is connected to the first condenser and the second condenser; The second condenser is located upstream of the first condenser in the air flow direction.

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