CN210179809U - Supercooling heat exchange system of refrigerant under air conditioner heating cycle and air conditioner - Google Patents
Supercooling heat exchange system of refrigerant under air conditioner heating cycle and air conditioner Download PDFInfo
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- CN210179809U CN210179809U CN201920679614.5U CN201920679614U CN210179809U CN 210179809 U CN210179809 U CN 210179809U CN 201920679614 U CN201920679614 U CN 201920679614U CN 210179809 U CN210179809 U CN 210179809U
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Abstract
The utility model discloses a supercooling heat transfer system and air conditioner of refrigerant under air conditioner heating cycle, wherein supercooling heat transfer system is including the supercooling heat exchanger that is equipped with first refrigerant pipe and second refrigerant pipe, first end of first refrigerant pipe links to each other with indoor heat exchanger, the second end links to each other with outdoor heat exchanger through first branch road, second refrigerant pipe first end links to each other through the second branch road with first refrigerant pipe second end, the second end links to each other with the compressor, the second branch road is equipped with the heat sink for the cooling of inside refrigerant. When heating, the second branch road refrigerant gets into the second refrigerant pipe after the heat sink cooling, two pipe refrigerants have the difference in temperature, will carry out the heat transfer once more, reach the secondary subcooling purpose, enlarge the difference in temperature with outdoor low temperature environment, improve heat exchange efficiency, the refrigerant is insufficient at indoor heat transfer when having solved among the prior art air conditioner heating, cause the refrigerant to get into the throttle cooling after, it is on the small side with outdoor low temperature environment difference in temperature, evaporation heat transfer effect is bad, the problem of the heat transfer demand when can't effectively satisfy the heating cycle.
Description
Technical Field
The utility model relates to an air conditioning technology field, more specifically say, relate to a supercooling heat transfer system and air conditioner of refrigerant under air conditioner heating cycle.
Background
For conventional air conditioner equipment, the air conditioner equipment consists of four conventional core components, namely a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger. In order to improve the stability and efficiency of the system operation, some auxiliary bypass devices and intelligent control systems are usually added.
In the heat exchange system of the existing Variable Refrigerant flow multiple (VRV) air conditioner, for the refrigeration cycle, after the high-temperature and high-pressure Refrigerant discharged by a compressor is subjected to heat exchange and cooling through a condenser, namely an outdoor heat exchanger, the Refrigerant is subjected to throttling control, the Refrigerant is further cooled and depressurized to form a liquid low-temperature and low-pressure Refrigerant, the Refrigerant enters an indoor heat exchanger to perform heat exchange, and indoor heat is taken away while evaporation and heat absorption are performed, so that the refrigeration effect is achieved. For heating circulation, high-temperature and high-pressure refrigerants discharged by a compressor exchange heat in an indoor heat exchanger, heat is transferred to the indoor space after condensation and heat release, and therefore a heating effect is achieved, and liquid low-temperature and low-pressure refrigerants are formed after throttling control, temperature reduction and pressure reduction.
However, the area of the indoor heat exchanger which has the condensation function during heating is much smaller than that of the outdoor heat exchanger which has the condensation function during cooling, so that when heating is performed, the indoor heat exchange of the refrigerant is insufficient, the condensation pressure tends to be unreasonable, the temperature difference between the refrigerant and the outdoor low-temperature environment is small after the refrigerant enters the throttling and cooling process, the heat exchange requirement during heating circulation cannot be effectively met, the evaporation heat exchange effect is poor, and the refrigerant circulation volume and performance output cannot meet the customer requirements. Therefore, how to solve the problem that the temperature difference between the refrigerant and the outdoor low-temperature environment is small after the refrigerant enters the throttling cooling because the indoor heat exchange of the refrigerant is insufficient during the heating of the air conditioner in the prior art, the evaporation heat exchange effect is poor, and the heat exchange requirement during the heating cycle cannot be effectively met becomes an important technical problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a supercooling heat transfer system and air conditioner of refrigerant under air conditioner heating cycle to the refrigerant is insufficient at indoor heat transfer when solving among the prior art air conditioner heating, causes the refrigerant to get into the throttle cooling back, and is little on the contrary with outdoor low temperature environment difference in temperature, and evaporation heat transfer effect is bad, the problem of the heat transfer demand when can't effectively satisfy the heating cycle.
The utility model aims at realizing through the following technical scheme:
the utility model provides a supercooling heat exchange system of refrigerant under air conditioner heating cycle, including compressor, indoor heat exchanger and outdoor heat exchanger, still include the supercooling heat exchanger, the supercooling heat exchanger includes first refrigerant pipe and can carry out the second refrigerant pipe of heat exchange with the first refrigerant pipe, the first end of first refrigerant pipe with the indoor heat exchanger passes through the pipe-line system and links to each other, the second end of first refrigerant pipe through first branch road with the outdoor heat exchanger links to each other; the first end of the second refrigerant pipe is connected with the second end of the first refrigerant pipe through a second branch, the second end of the second refrigerant pipe is connected with the compressor through a pipeline system, and the second branch is provided with a cooling device for cooling an internal refrigerant.
Preferably, the temperature reducing device is an expansion valve.
Preferably, the first refrigerant pipe and the second refrigerant pipe are both coil pipes and are bent from one end to the other end to form a serpentine shape.
Preferably, the first refrigerant pipe and the second refrigerant pipe are both high-thin-tooth internal thread copper pipes.
Preferably, the cross sections of the first refrigerant pipe and the second refrigerant pipe are surrounded by a straight line section and an arc line section connected with the straight line section, so that the cross sections are in a D shape, and the cross section of the first refrigerant pipe and the cross section of the second refrigerant pipe are arranged oppositely.
Preferably, a high-temperature adhesive is filled between the first refrigerant pipe and the second refrigerant pipe.
Preferably, the arc segment is in the shape of an arc or an elliptical arc.
Preferably, the lengths of the first refrigerant pipe and the second refrigerant pipe are both 400 mm-800 mm.
Preferably, the first refrigerant pipe and the second refrigerant pipe both include a plurality of sections of straight pipes and a bent pipe for connecting two adjacent sections of the straight pipes, and both ends of the first refrigerant pipe and the second refrigerant pipe are the straight pipes.
Preferably, the supercooling heat exchanger further comprises a housing fixedly arranged outside the first refrigerant pipe and the second refrigerant pipe, and the housing is provided with a refrigerant pipe passing hole for the first refrigerant pipe and the second refrigerant pipe to pass through.
Preferably, the expansion valve is an electronic expansion valve.
The utility model also provides an air conditioner, including the supercooling heat transfer system of air conditioner heating cycle refrigerant down, supercooling heat transfer system be as above arbitrary the supercooling heat transfer system.
Preferably, the air conditioner further comprises a control system for controlling the second refrigerant pipe to be cut off or conducted according to the running state of the air conditioner, and when the air conditioner is in a refrigerating state, the control system controls the second refrigerant pipe to be cut off; and when the air conditioner is in a heating state, the control system controls the conduction of the second refrigerant pipe.
The utility model provides a technical scheme, a supercooling heat exchange system of refrigerant under air conditioner heating cycle, including compressor, indoor heat exchanger and outdoor heat exchanger, still include the supercooling heat exchanger, the supercooling heat exchanger includes first refrigerant pipe and can carry out the second refrigerant pipe of heat exchange with first refrigerant pipe, the first end of first refrigerant pipe passes through the pipe-line system with indoor heat exchanger and links to each other, the second end of first refrigerant pipe passes through first branch road and links to each other with outdoor heat exchanger; the first end of the second refrigerant pipe is connected with the second end of the first refrigerant pipe through a second branch, the second end of the second refrigerant pipe is connected with the compressor through a pipeline system, and the second branch is provided with a cooling device for cooling the inside refrigerant. So set up, when the air conditioner heats, the second branch road refrigerant gets into in the second refrigerant pipe after the heat sink cooling, there is the difference in temperature in two way refrigerants this moment, the refrigerant in first refrigerant pipe and the second refrigerant pipe will carry out the heat exchange once more, reach the purpose of refrigerant secondary subcooling, make the refrigerant temperature in the pipeline further reduce, thereby enlarge the difference in temperature with outdoor low temperature environment, and the heat exchange efficiency is improved, effectively satisfy the heat transfer demand when heating the circulation, the refrigerant is insufficient at indoor heat transfer when having solved among the prior art air conditioner heats, cause the refrigerant to get into the throttle cooling after, with outdoor low temperature environment difference in temperature on the small side, evaporation heat transfer effect is bad, the problem of the heat transfer demand when can't effectively satisfy the heating circulation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a supercooling heat exchange system in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a supercooling heat exchanger in an embodiment of the present invention;
fig. 3 is a first schematic cross-sectional view of a first refrigerant pipe and a second refrigerant pipe in an embodiment of the present invention;
fig. 4 is a second schematic cross-sectional view of the first refrigerant pipe and the second refrigerant pipe in the embodiment of the present invention.
In fig. 1-4:
the device comprises a first refrigerant pipe-1, a second refrigerant pipe-2, a cooling device-3, a straight line segment-4, an arc line segment-5, a straight pipe-6, an elbow pipe-7, a shell-8, a compressor-9, an indoor heat exchanger-10, an outdoor heat exchanger-11, a supercooling heat exchanger-12, a first branch-13, a second branch-14, a stop valve-15, a filter-16 and a gas-liquid separator-17.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
This embodiment provides a supercooling heat transfer system and air conditioner of refrigerant under air conditioner heating cycle, has solved among the prior art refrigerant when the air conditioner heats at indoor heat transfer inadequately, causes the refrigerant to get into the throttle cooling back, and is slightly little with outdoor low temperature environment difference in temperature, and evaporation heat transfer effect is bad, can't effectively satisfy the problem of the heat transfer demand when heating the cycle.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1-4, the supercooling heat exchange system of the refrigerant under the air-conditioning heating cycle provided in this embodiment includes a compressor 9, an indoor heat exchanger 10, an outdoor heat exchanger 11, and a supercooling heat exchanger 12, where the supercooling heat exchanger 12 includes a first refrigerant pipe 1 and a second refrigerant pipe 2 capable of exchanging heat with the first refrigerant pipe 1, a first end of the first refrigerant pipe 1 is connected to the indoor heat exchanger 10 through a piping system, and a second end of the first refrigerant pipe 1 is connected to the outdoor heat exchanger 11 through a first branch 13; as shown in fig. 1, the dotted line frame portion in the figure represents an indoor portion, and includes an indoor heat exchanger 10, the piping system includes a stop valve 15, a filter 16, and the like, and the indoor heat exchanger 10 is connected to the first end of the first refrigerant pipe 1 through the piping system, so that the filtered refrigerant enters the first refrigerant pipe 1, and the pipeline is prevented from being blocked. The first end of the second refrigerant pipe 2 is connected with the second end of the first refrigerant pipe 1 through a second branch 14, the second end of the second refrigerant pipe 2 is connected with the compressor 9 through a pipeline system, and the second branch 14 is provided with a cooling device 3 for cooling the internal refrigerant; as shown in fig. 1, the pipeline system includes a gas-liquid separator 17, and the refrigerant flowing out of the second refrigerant pipe 2 passes through the gas-liquid separator 17 to undergo gas-liquid separation, and then returns to the compressor 9 again to wait for entering the next working cycle. Preferably, the cooling device 3 is an expansion valve, and the expansion valve can be an electronic expansion valve, so that throttling and cooling of the refrigerant can be realized.
By the arrangement, after the heating refrigerant works through the indoor heat exchanger, the high-efficiency supercooling heat exchanger is connected, when the air conditioner heats, the refrigerant after indoor heat exchange is divided into two paths of refrigerants, the second branch refrigerant enters a second refrigerant pipe after being cooled by a cooling device, at the moment, the two paths of refrigerants have temperature difference, the refrigerants in the first refrigerant pipe and the second refrigerant pipe exchange heat again to achieve the purpose of secondary supercooling of the refrigerants, so that the temperature of the refrigerants in the pipeline is further reduced, thereby enlarging the temperature difference with the outdoor low-temperature environment, improving the heat exchange efficiency, effectively meeting the heat exchange requirement during the heating cycle, solving the problems that the refrigerant does not fully exchange heat indoors during the heating of the air conditioner in the prior art, so that after the refrigerant enters the throttling and cooling, the temperature difference between the indoor air and the outdoor low-temperature environment is small, the evaporation heat exchange effect is poor, and the heat exchange requirement in the heating cycle can not be effectively met.
As shown in fig. 2, the first refrigerant pipe 1 and the second refrigerant pipe 2 are arranged in parallel, wherein the refrigerant flowing directions of the first refrigerant pipe 1 and the second refrigerant pipe 2 are opposite, that is, the first end of the first refrigerant pipe 1 and the second end of the second refrigerant pipe 2 are arranged at one side, the second end of the first refrigerant pipe 1 and the first end of the second refrigerant pipe 2 are arranged at the other side, the solid arrow in the figure represents the refrigerant flowing direction of the first refrigerant pipe 1, and the hollow arrow in the figure represents the refrigerant flowing direction of the second refrigerant pipe 2, so that a double-pipe structure is adopted to perform countercurrent heat exchange, the heat exchange is more sufficient, and the heat exchange efficiency is improved.
In this embodiment, as shown in fig. 2, first refrigerant pipe 1 and second refrigerant pipe 2 are the coil pipe, and buckle from one end to the other end and be snakelike, form snakelike coil pipe like this, and occupation space is few not only, compact structure, but also extension heat transfer route realizes high-efficient subcooling heat transfer, guarantees system heat transfer cycle reliability. Preferably, the lengths of the first refrigerant pipe 1 and the second refrigerant pipe 2 are both 400 mm-800 mm, so that the heat exchange requirement of the system can be met.
In this embodiment, the first refrigerant pipe 1 and the second refrigerant pipe 2 are both a copper pipe with a high-thin-tooth internal thread. Due to the design of the high-thin teeth, the effect of a flowing boundary layer of a refrigerant can be destroyed, so that turbulent heat exchange is enhanced, and the heat exchange coefficient and the performance of the whole machine are improved. In the embodiment of the present invention, the first refrigerant pipe 1 and the second refrigerant pipe 2 both include a plurality of straight pipes 6 and a bent pipe 7 for connecting two adjacent straight pipes 6, and both ends of the first refrigerant pipe 1 and the second refrigerant pipe 2 are the straight pipes 6, so as to be connected to an external pipeline.
As an optional implementation manner, the cross sections of the first refrigerant pipe 1 and the second refrigerant pipe 2 are surrounded by a straight line segment 4 and an arc segment 5 connected with the straight line segment 4, so that the cross sections are D-shaped, and the straight line segment 4 of the cross section of the first refrigerant pipe 1 and the straight line segment 4 of the cross section of the second refrigerant pipe 2 are oppositely arranged. By the design, the heat exchange contact area of the two pipes can be increased, and the heat exchange operation capacity of the system is enhanced. As shown in fig. 3, the arc segment 5 may be an arc, so that the two refrigerant pipes form a circular structure. Alternatively, as shown in fig. 4, the arc segment 5 may be an elliptical arc, so that the overall shape of the two refrigerant pipes forms an elliptical structure. The shape can ensure the heat exchange effect, reduce the space occupied by the refrigerant pipe and reduce the volume by 30 percent.
In order to ensure that the two refrigerant pipes can reliably exchange heat, high-temperature adhesive is filled between the first refrigerant pipe 1 and the second refrigerant pipe 2. Therefore, in the using process, the two refrigerant pipes cannot deviate due to factors such as vibration and the like, the positions of the two refrigerant pipes are always kept unchanged, and the reliable heat exchange of the two paths of refrigerants is guaranteed.
In this embodiment, the supercooling heat exchanger 12 further includes a casing 8 fixedly disposed outside the first refrigerant pipe 1 and the second refrigerant pipe 2, and the casing 8 is provided with a refrigerant pipe through hole for the first refrigerant pipe 1 and the second refrigerant pipe 2 to pass through, so that the two refrigerant pipes are not interfered by the external environment during heat exchange, and harmful heat exchange is avoided. Optionally, the shell 8 is a square metal shell, and the supercooling heat exchanger 12 is integrally of a flat structure, so that the whole supercooling heat exchanger is conveniently fixed with the whole machine. Because the refrigerant pipe can vibrate when flowing, if the refrigerant pipe is fixed with a side plate of the whole machine through the shell 8, the vibration damping of the supercooling heat exchanger 12 can be increased, the vibration noise is effectively reduced, and the quality hidden trouble of the vibration fracture of the pipeline is avoided.
The embodiment also provides an air conditioner, which comprises a supercooling heat exchange system of a refrigerant in the heating cycle of the air conditioner, wherein the supercooling heat exchange system is the supercooling heat exchange system described above. So set up, use the secondary supercooling technique, strengthened system heating operating capability, utilize a high-efficient supercooling heat transfer mode, carry out the secondary supercooling by the refrigerant after the indoor heat exchanger condensation when heating to guarantee the reasonable circulation of system, satisfy customer function demand. The supercooling heat exchange system is suitable for VRV air conditioners, namely multi-split air conditioners, and a schematic diagram of a multi-split air conditioner system is shown in figure 1.
In addition, the air conditioner also comprises a control system for controlling the second refrigerant pipe 2 to be cut off or conducted according to the running state of the air conditioner, and when the air conditioner is in a refrigerating state, the control system controls the second refrigerant pipe 2 to be cut off; when the air conditioner is in a heating state, the control system controls the conduction of the second refrigerant pipe 2. Optionally, the control system includes a proportional-Integral-derivative (PID) controller and an electronic expansion valve disposed in the second branch 14, where the electronic expansion valve can throttle and cool the refrigerant, and can also control the opening and closing of the electronic expansion valve to achieve the connection or disconnection of the second refrigerant pipe 2. During refrigeration, the electronic expansion valve is closed, the second refrigerant pipe 2 is cut off, and the refrigerant does not need to be subjected to secondary supercooling at the moment; when heating, the electronic expansion valve is opened, the second refrigerant pipe 2 is conducted, at the moment, the second branch 14 refrigerant is throttled, decompressed and cooled and then enters the supercooling heat exchanger 12, the first branch 13 refrigerant is further cooled, and the purpose of supercooling is achieved, so that the reliability of system circulation and the high-efficiency ratio value during heating are guaranteed. In practical application, the air conditioner generally adopts PID control, and the action of the electronic expansion valve can be controlled according to the running state of the air conditioner and the temperature and pressure sensing data feedback of the whole machine process.
It should be noted that, for example, in the preferred embodiment of the supercooling heat exchange system for refrigerant under hollow modulation heat cycle, the supercooling heat exchanger 12 includes a compressor 9, an indoor heat exchanger 10, an outdoor heat exchanger 11, and a supercooling heat exchanger 12, the supercooling heat exchanger 12 includes a first refrigerant pipe 1 and a second refrigerant pipe 2 capable of exchanging heat with the first refrigerant pipe 1, and the first refrigerant pipe 1 and the second refrigerant pipe 2 are arranged in parallel and have opposite refrigerant flowing directions. The first end of the first refrigerant pipe 1 is connected with the indoor heat exchanger 10 through a pipeline system, and the second end of the first refrigerant pipe 1 is connected with the outdoor heat exchanger 11 through a first branch 13. The first end of the second refrigerant pipe 2 is connected with the second end of the first refrigerant pipe 1 through a second branch 14, the second end of the second refrigerant pipe 2 is connected with the compressor 9 through a pipeline system, the second branch 14 is provided with a cooling device 3 for cooling the internal refrigerant, and the cooling device 3 is an electronic expansion valve. The supercooling heat exchanger 12 further comprises a shell 8 fixedly arranged outside the first refrigerant pipe 1 and the second refrigerant pipe 2, and the shell 8 is provided with a refrigerant pipe passing hole for the first refrigerant pipe 1 and the second refrigerant pipe 2 to pass through.
In this embodiment, the first refrigerant pipe 1 and the second refrigerant pipe 2 are coiled serpentine pipes, each of which has a length of 400 mm to 800 mm, and each of which includes a plurality of straight pipes 6 and a bent pipe 7 for connecting two adjacent straight pipes 6, and both ends of the first refrigerant pipe 1 and the second refrigerant pipe 2 are straight pipes 6. The cross sections of the first refrigerant pipe 1 and the second refrigerant pipe 2 are surrounded by a straight line section 4 and an arc section 5 connected with the straight line section 4, so that the cross sections are D-shaped, the straight line section 4 of the cross section of the first refrigerant pipe 1 and the straight line section 4 of the cross section of the second refrigerant pipe 2 are oppositely arranged, and the arc section 5 is arc-shaped or elliptic arc-shaped. The first refrigerant pipe 1 and the second refrigerant pipe 2 are both high-thin tooth internal thread copper pipes, and high-temperature adhesive is filled between the first refrigerant pipe and the second refrigerant pipe.
By the arrangement, after the heating refrigerant works through the indoor heat exchanger, the high-efficiency supercooling heat exchanger is connected, when the air conditioner heats, the refrigerant after indoor heat exchange is divided into two paths of refrigerants, the second branch refrigerant enters a second refrigerant pipe after being cooled by a cooling device, at the moment, the two paths of refrigerants have temperature difference, the refrigerants in the first refrigerant pipe and the second refrigerant pipe exchange heat again to achieve the purpose of secondary supercooling of the refrigerants, so that the temperature of the refrigerants in the pipeline is further reduced, thereby ensuring the reliability of system circulation and high-efficiency ratio value during heating, effectively meeting the heat exchange requirement during heating circulation, solving the problems that the refrigerant is not fully exchanged in the room during heating of the air conditioner in the prior art, so that after the refrigerant enters the throttling and cooling, the temperature difference between the indoor air and the outdoor low-temperature environment is small, the evaporation heat exchange effect is poor, and the heat exchange requirement in the heating cycle can not be effectively met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A supercooling heat exchange system of a refrigerant under an air conditioner heating cycle comprises a compressor (9), an indoor heat exchanger (10) and an outdoor heat exchanger (11), and is characterized by further comprising a supercooling heat exchanger (12), wherein the supercooling heat exchanger (12) comprises a first refrigerant pipe (1) and a second refrigerant pipe (2) capable of exchanging heat with the first refrigerant pipe (1), the first end of the first refrigerant pipe (1) is connected with the indoor heat exchanger (10) through a pipeline system, and the second end of the first refrigerant pipe (1) is connected with the outdoor heat exchanger (11) through a first branch (13); the first end of the second refrigerant pipe (2) is connected with the second end of the first refrigerant pipe (1) through a second branch (14), the second end of the second refrigerant pipe (2) is connected with the compressor (9) through a pipeline system, and the second branch (14) is provided with a cooling device (3) for cooling an internal refrigerant.
2. A subcooling heat exchange system as described in claim 1, wherein the temperature reducing means (3) is an expansion valve.
3. A supercooling heat exchange system according to claim 1, wherein the first refrigerant pipe (1) and the second refrigerant pipe (2) are both coil pipes and are bent in a serpentine shape from one end to the other end.
4. The supercooling heat exchange system of claim 1, wherein the first refrigerant pipe (1) and the second refrigerant pipe (2) are both high-thin tooth internal thread copper pipes.
5. The supercooling heat exchange system of claim 1, wherein the cross sections of the first refrigerant pipe (1) and the second refrigerant pipe (2) are surrounded by a straight line section (4) and an arc line section (5) connected with the straight line section (4) to make the cross sections be D-shaped, and the cross section of the first refrigerant pipe (1) and the straight line section (4) of the cross section of the second refrigerant pipe (2) are arranged oppositely.
6. A supercooling heat exchange system according to claim 1, wherein a high temperature adhesive is filled between the first refrigerant pipe (1) and the second refrigerant pipe (2).
7. A subcooling heat exchange system as described in claim 5, wherein the arc segment (5) is in the shape of a circular arc or an elliptical arc.
8. A supercooling heat exchange system according to claim 1, wherein the lengths of the first refrigerant pipe (1) and the second refrigerant pipe (2) are 400 mm to 800 mm.
9. The supercooling heat exchange system of claim 1, wherein the first refrigerant pipe (1) and the second refrigerant pipe (2) each comprise a plurality of sections of straight pipes (6) and a bent pipe (7) for connecting two adjacent sections of the straight pipes (6), and both ends of the first refrigerant pipe (1) and the second refrigerant pipe (2) are the straight pipes (6).
10. The supercooling heat exchange system of claim 1, wherein the supercooling heat exchanger (12) further comprises a housing (8) fixedly arranged outside the first refrigerant pipe (1) and the second refrigerant pipe (2), and the housing (8) is provided with a refrigerant pipe passing hole for the first refrigerant pipe (1) and the second refrigerant pipe (2) to pass through.
11. A subcooling heat exchange system as described in claim 2, wherein said expansion valve is an electronic expansion valve.
12. An air conditioner, characterized in that, comprising a supercooling heat exchange system of a refrigerant in a heating cycle of the air conditioner, wherein the supercooling heat exchange system is the supercooling heat exchange system according to any one of claims 1 to 11.
13. The air conditioner as claimed in claim 12, further comprising a control system for controlling the second refrigerant pipe (2) to be turned off or on according to an operation state of the air conditioner, wherein when the air conditioner is in a cooling state, the control system controls the second refrigerant pipe (2) to be turned off; when the air conditioner is in a heating state, the control system controls the conduction of the second refrigerant pipe (2).
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| CN201920679614.5U CN210179809U (en) | 2019-05-10 | 2019-05-10 | Supercooling heat exchange system of refrigerant under air conditioner heating cycle and air conditioner |
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| CN201920679614.5U CN210179809U (en) | 2019-05-10 | 2019-05-10 | Supercooling heat exchange system of refrigerant under air conditioner heating cycle and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131817A (en) * | 2019-05-10 | 2019-08-16 | 格力电器（合肥）有限公司 | Air-conditioning heating recycles the supercooling heat-exchange system and air conditioner of lower refrigerant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131817A (en) * | 2019-05-10 | 2019-08-16 | 格力电器（合肥）有限公司 | Air-conditioning heating recycles the supercooling heat-exchange system and air conditioner of lower refrigerant |
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