CN215808974U - Heat radiation structure of heat exchange system, heat exchange system and air conditioner - Google Patents
Heat radiation structure of heat exchange system, heat exchange system and air conditioner Download PDFInfo
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- CN215808974U CN215808974U CN202121749727.1U CN202121749727U CN215808974U CN 215808974 U CN215808974 U CN 215808974U CN 202121749727 U CN202121749727 U CN 202121749727U CN 215808974 U CN215808974 U CN 215808974U
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Abstract
The utility model discloses a heat radiation structure of a heat exchange system, the heat exchange system and an air conditioner, comprising: the heat dissipation module is arranged on a refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger and cools a heating part through a refrigerant of the refrigerant pipeline; and one end of the bypass branch is connected with a refrigerant pipeline between the heat dissipation module and the indoor heat exchanger, the other end of the bypass branch is connected with the exhaust side of the compressor, and a first regulating valve is arranged on the bypass branch. According to the utility model, the exhaust side bypass branch is added, the electronic expansion valve is arranged on the bypass branch, the temperature of the drive control module is compared with the outdoor environment temperature, and when the difference value between the temperature of the drive control module and the outdoor environment temperature is lower than a set difference value range, the bypass branch is communicated. The high-temperature high-pressure refrigerant steam on the exhaust side of the compressor carries out temperature rise on liquid refrigerants after passing through the electronic expansion valve of the bypass branch, so that the temperature of the driving module is prevented from being lower than the dew point temperature of air, and the generation of condensed water is avoided.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a heat dissipation structure of a heat exchange system, the heat exchange system and an air conditioner.
Background
In the inverter air conditioning system, the operation of a compressor and a motor is controlled by a drive control module. In the operation process of the system, the drive control module can generate heat, the heat is gathered in the electric appliance box to continuously raise the temperature, and when the temperature exceeds a certain range, components and parts such as a mainboard and a drive board can be damaged, so that the drive control module is required to be radiated.
The traditional heat dissipation mode adopts a radiator for heat dissipation, but the heat dissipation effect is poor, and particularly under a high-temperature environment, the temperature of the drive control module can be in a high-temperature state for a long time. At present, the driving control module is mostly cooled by a liquid refrigerant cooling mode, but the method also has limitations, for example, when the heat productivity of the module is less than the heat dissipation capacity, the temperature of the driving control module may be lower than the dew point temperature, so that condensed water is generated, and a mainboard or a driving board is short-circuited.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat dissipation structure of a heat exchange system, the heat exchange system and an air conditioner, aiming at solving the technical problem of condensation of heating components in the prior art.
The technical scheme adopted by the utility model is as follows:
the utility model provides a heat radiation structure of a heat exchange system, which comprises:
the heat dissipation module is arranged on a refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger and cools a heating part through a refrigerant of the refrigerant pipeline;
and one end of the bypass branch is connected with a refrigerant pipeline between the heat dissipation module and the indoor heat exchanger, the other end of the bypass branch is connected with the exhaust side of the compressor, and a first regulating valve is arranged on the bypass branch.
Furthermore, the other end of the bypass branch is connected to a refrigerant pipeline between the exhaust side of the compressor and the four-way valve.
The utility model also includes:
the bypass branch circuit comprises a heating component temperature sensing bulb for detecting the temperature of the heating component, an ambient temperature sensing bulb for detecting the ambient temperature, and a refrigerant temperature sensing bulb which is arranged on a refrigerant pipeline between a connecting point of one end of the bypass branch circuit, which is connected with the refrigerant pipeline, and the heat dissipation module and is used for detecting the temperature of the refrigerant.
And the controller closes the first regulating valve when the difference between the temperature of the heat generating component and the ambient temperature is greater than a first preset difference. When the difference between the temperature of the heating part and the ambient temperature is smaller than a first preset difference, the controller opens the first regulating valve.
Furthermore, a second regulating valve is further arranged on a refrigerant pipeline between the heat dissipation module and the outdoor heat exchanger, and when the first regulating valve is opened, the controller adjusts the opening degree of the second regulating valve according to a comparison result of an actual difference value between the temperature of the heating component and the temperature of the refrigerant and a second preset difference value.
Further, when the exhaust temperature of the compressor is higher than the preset exhaust temperature, the controller opens the first regulating valve to release the pressure.
Preferably, the first regulating valve is an electronic expansion valve.
The utility model also provides a heat exchange system using the heat dissipation structure.
The utility model also provides an air conditioner using the heat exchange system.
Compared with the prior art, the utility model adds the exhaust side bypass branch, arranges the electronic expansion valve on the bypass branch, compares the temperature of the drive control module with the outdoor environment temperature, and when the difference value between the temperature of the drive control module and the outdoor environment temperature is lower than the set difference value range, the bypass branch is communicated. The high-temperature high-pressure refrigerant steam on the exhaust side of the compressor carries out temperature rise on liquid refrigerants after passing through the electronic expansion valve of the bypass branch, so that the temperature of the driving module is prevented from being lower than the dew point temperature of air, and the generation of condensed water is avoided.
The compressor is closer than indoor set distance from the module that generates heat apart from the distance of the module that generates heat, and the bypass branch road is directly connected to near the heat dissipation module from the compressor exhaust side, and the circulation distance of high temperature refrigerant is shorter, and better more showing the intensification effect of refrigerant, the cost that sets up the bypass branch road moreover is lower.
When the exhaust temperature at the exhaust side of the compressor is too high, the bypass branch can be opened to release pressure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic view of the structure in the embodiment of the present invention.
11. A compressor; 12. a four-way valve; 13. an outdoor heat exchanger; 14. an indoor heat exchanger; 15. a second regulating valve;
21. a bypass branch; 22. a first regulating valve; 23. a heat dissipation module; 24. a heat generating component;
31. a temperature sensing bulb of a heating part; 32. a refrigerant temperature sensing bulb; 33. an ambient temperature bulb.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1, the present invention provides a heat dissipation structure of a heat exchange system, where the heat exchange system may be an air conditioner or a variable frequency air conditioner, or may be another heat exchange system having switchable cooling and heating functions.
Taking an air conditioner as an example, the air conditioner specifically comprises: the air conditioner comprises a compressor 11, an indoor heat exchanger 14, an outdoor heat exchanger 13, a four-way valve 12, an electronic expansion valve 15 and a heat generating component 24, wherein the electronic expansion valve 15 is a subsequent second regulating valve 15, and the heat generating component 24 can be specifically a driving control module with large heat generation amount of the air conditioner or other heat generating modules of the air conditioner. Meanwhile, the connection of the refrigerant pipelines of all the components is the connection mode of the existing air conditioner, which is not described in detail, and the air conditioner can switch the refrigeration mode and the heating mode through the four-way valve.
The heat radiation structure specifically includes: the heat dissipation module 23, the bypass branch 21 and the first adjusting valve 22 are arranged on a refrigerant pipeline directly connected between the outdoor heat exchanger 13 and the indoor heat exchanger 14, so that a refrigerant in the refrigerant pipeline can flow through the heat dissipation module 23 to cool a heating component 24 (a driving control module), and the heat dissipation module 23 is a refrigerant heat dissipation pipe arranged in the driving control module or attached to the driving control module, so that the heat dissipation module 23 can dissipate heat for the driving control module through the refrigerant in the refrigerant pipeline. One end of the bypass branch 21 is connected to a refrigerant line (i.e., a connection point a in the drawing) between the heat dissipation module 23 and the indoor heat exchanger 14, and the other end is connected to a refrigerant line (i.e., a connection point b in the drawing) between the discharge side of the compressor 11 and the four-way valve 12. First governing valve 22 is installed and is used for controlling the break-make or the flow of bypass branch 21 on bypass branch 21, when drive control module leads to the temperature to hang down excessively through the refrigerant heat dissipation, can open bypass branch 21 and heat up for the refrigerant, avoids taking place the condensation. Through set up first governing valve 22 on bypass branch road 21, conveniently adjust the refrigerant flow of bypass branch road to accomplish accurate intensification or cooling, improve the effect of preventing condensation or pressure release.
Because the distance between the compressor 11 and the heat dissipation module 23 is shorter than the distance between the indoor heat exchanger 14 and the heat dissipation module 23, the bypass branch 21 is directly connected to the position near the heat dissipation module from the exhaust side of the compressor 11, the circulation distance of the high-temperature refrigerant is shorter, the heating effect on the refrigerant is better and more remarkable, and the cost for arranging the bypass branch is lower.
The length of a refrigerant pipeline between the heat dissipation module and the outdoor heat exchanger is smaller than that between the heat dissipation module and the indoor heat exchanger, and the second adjusting valve is arranged between the heat dissipation module and the outdoor heat exchanger, so that the temperature of the refrigerant flowing through the heat dissipation module in the refrigeration mode is prevented from being too low.
In order to control the first regulating valve 22 to prevent condensation, the heat dissipation structure further includes: a heating part temperature sensing bulb 31 for detecting the temperature of the heating part 24, an environment temperature sensing bulb 33 for detecting the environment temperature, a refrigerant temperature sensing bulb 32 arranged on a refrigerant pipeline between a connection point at one end of the bypass branch 21 and the heat dissipation module 23, and a controller. The first regulating valve 22 is an electronic expansion valve, and its specific control includes:
when the difference between the temperature of the heating component and the ambient temperature is greater than a first preset difference T0When the controller closes the first adjusting valve 22, the heat generating component 24 generates a large amount of heat, and the bypass 21 is not needed to increase the temperature of the refrigerant to prevent condensation. When the difference between the temperature of the heating component and the ambient temperature is less than a first preset difference T0At this time, the heating component 24 generates a small amount of heat, and in order to prevent the temperature of the heating component 24 from being lower than the air dew point temperature after being further cooled by the refrigerant, the controller opens the first adjusting valve 22 to increase the temperature of the refrigerant flowing through the heat dissipation module 23.
When the difference between the temperature of the heating component and the ambient temperature is less than a first preset difference T0When the bypass branch 21 is connected, the controller is based on the actual difference between the temperature of the heat generating component and the temperature of the refrigerant and the second preset difference T1The opening degree of the second regulating valve 15 is adjusted as a result of the comparison. Specifically, when the actual difference between the temperature of the heat generating component and the temperature of the refrigerant is greater than the second preset difference T1In this case, the refrigerant flow rate is insufficient, and the opening degree of the second regulating valve needs to be increased. When the temperature of the heating element and the temperature of the refrigerant are actualThe difference is less than a second preset difference T1When the refrigerant flow is enough to meet the heat exchange requirement, the opening degree of the second regulating valve 15 can be maintained or the opening degree of the second regulating valve 15 can be reduced.
The temperature and the temperature difference are both expressed in units of ℃.
The following is a description of the specific principles in conjunction with the above control:
when the air conditioner operates the refrigeration cycle, at this time, because the outdoor environment temperature is high, the temperature of the refrigerant (refrigerant) passing through the outdoor heat exchanger 13 is high, and the heat dissipation amount required by the heating component 24 is also large, so that a site where the temperature of the heating component 24 is lower than the dew point temperature of the air conditioner is not generated, and condensation is not generated, at this time, the bypass branch 21 can be used as a pressure relief branch, that is, when the exhaust temperature is higher than the preset exhaust temperature and the exhaust pressure is too high, the bypass branch 21 can be communicated to relieve the exhaust side of the compressor 11.
The specific flow process of the refrigerant when the refrigeration cycle is operated is as follows: the refrigerant flows out of the compressor 11 and then enters the outdoor heat exchanger 13 through the four-way valve 12, after the outdoor heat exchanger 13 condenses and dissipates heat, the refrigerant flows through the refrigerant radiating pipe of the heat dissipating module 23 and then enters the indoor heat exchanger 14 to evaporate and absorb heat, and the refrigerant returning from the indoor heat exchanger 14 returns to the compressor 11 through the four-way valve 12, so that circulation is realized. When the exhaust pressure is too high, the first regulating valve of the bypass branch can be opened for pressure relief.
When the air conditioner operates a heating cycle, the outdoor environment temperature is low at this time, the temperature of the refrigerant flowing from the indoor heat exchanger 14 to the heat dissipation module 23 is low, the situation that the heating value is smaller than the heat dissipation amount is easy to occur at this time, and the risk of condensation exists, the first adjusting valve 22 can be controlled according to the temperature to open the bypass branch 21, so that part of the refrigerant on the exhaust side of the compressor 11 and the refrigerant flowing out of the indoor heat exchanger 14 are converged and then flow to the heat dissipation module 23. The liquid refrigerant entering the heat dissipation module 23 is heated, so that the temperature of the drive control module is prevented from being lower than the dew point temperature of air, and the generation of condensed water is avoided.
In the system, after being compressed by a compressor 11, a refrigerant (refrigerant) flows through a four-way valve 12 and enters an indoor heat exchanger 14 for condensation and heat dissipation, the refrigerant after heat exchange enters a heat dissipation module 23, the liquid refrigerant flows through the heat dissipation module 23 to cool a drive control module, after heat exchange, the refrigerant is throttled and depressurized by a second regulating valve 15 (a heating electronic expansion valve) and enters an outdoor heat exchanger 13, and after being evaporated and absorbed heat in the outdoor heat exchanger 13, the refrigerant returns to the compressor 11 through the four-way valve 12, so that circulation is realized. When the difference between the temperature of the heat generating component and the ambient temperature is smaller than the first preset difference, the first regulating valve 22 is opened to communicate the bypass branch 21, and a portion of the refrigerant on the discharge side of the compressor 11 joins the refrigerant flowing out of the indoor heat exchanger 14 and flows to the heat dissipation module 23.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A heat radiation structure of a heat exchange system, comprising:
the heat dissipation module is arranged on a refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger and cools a heating part through a refrigerant of the refrigerant pipeline;
and one end of the bypass branch is connected with a refrigerant pipeline between the heat dissipation module and the indoor heat exchanger, and the other end of the bypass branch is connected with the exhaust side of the compressor.
2. The heat dissipating structure of a heat exchange system according to claim 1, wherein a first regulating valve is provided on the bypass branch.
3. The heat dissipating structure of a heat exchanging system as set forth in claim 1, wherein the other end of the bypass branch is connected to a refrigerant line between the discharge side of the compressor and the four-way valve.
4. The heat dissipating structure of a heat exchange system according to claim 2, further comprising: the bypass branch circuit comprises a heating component temperature sensing bulb for detecting the temperature of the heating component, an ambient temperature sensing bulb for detecting the ambient temperature, and a refrigerant temperature sensing bulb which is arranged on a refrigerant pipeline between a connecting point of one end of the bypass branch circuit, which is connected with the refrigerant pipeline, and the heat dissipation module and is used for detecting the temperature of the refrigerant.
5. The heat dissipating structure of a heat exchange system according to claim 4, further comprising: and the controller opens the first regulating valve to communicate with the bypass branch when the difference between the temperature of the heating part and the ambient temperature is smaller than a first preset difference.
6. The heat dissipating structure of the heat exchanging system as claimed in claim 5, wherein the controller closes the first regulating valve to disconnect the bypass branch when the difference between the temperature of the heat generating component and the ambient temperature is greater than a first predetermined difference.
7. The heat dissipating structure of a heat exchanging system as claimed in claim 5, wherein a second regulating valve is disposed on a refrigerant pipeline between the heat dissipating module and the outdoor heat exchanger, and when the first regulating valve is opened, the controller adjusts an opening degree of the second regulating valve according to a comparison result between an actual difference between a temperature of a heat generating component and a temperature of a refrigerant and a second predetermined difference.
8. The heat dissipating structure of a heat exchanging system as claimed in claim 5, wherein the controller opens the first regulating valve to release the pressure when the discharge temperature of the compressor is higher than a preset discharge temperature.
9. A heat exchange system characterized by using the heat dissipation structure of any one of claims 1 to 8.
10. An air conditioner comprising the heat exchange system of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121749727.1U CN215808974U (en) | 2021-07-29 | 2021-07-29 | Heat radiation structure of heat exchange system, heat exchange system and air conditioner |
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| CN202121749727.1U CN215808974U (en) | 2021-07-29 | 2021-07-29 | Heat radiation structure of heat exchange system, heat exchange system and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773613A (en) * | 2022-11-11 | 2023-03-10 | 宁波奥克斯电气股份有限公司 | Condensation prevention control method and device for heat pump system and heat pump system |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773613A (en) * | 2022-11-11 | 2023-03-10 | 宁波奥克斯电气股份有限公司 | Condensation prevention control method and device for heat pump system and heat pump system |
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