CN217154605U - Self-supercooling structure and air conditioner - Google Patents
Self-supercooling structure and air conditioner Download PDFInfo
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- CN217154605U CN217154605U CN202220627039.6U CN202220627039U CN217154605U CN 217154605 U CN217154605 U CN 217154605U CN 202220627039 U CN202220627039 U CN 202220627039U CN 217154605 U CN217154605 U CN 217154605U
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- indoor heat
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- 238000004781 supercooling Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 140
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000004378 air conditioning Methods 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a from supercooling structure and air conditioner, include: the first refrigerant pipeline is connected between the outdoor heat exchanger of the air conditioner and the first refrigerant side of the indoor heat exchanger; one end of the second refrigerant pipeline is connected with the second refrigerant side of the indoor heat exchanger, the other end of the second refrigerant pipeline is connected with the four-way valve or the compressor, and the heat exchange device is further included, wherein the refrigerant in the first refrigerant pipeline and the refrigerant in the second refrigerant pipeline flow through the heat exchange device for indirect heat exchange. The utility model discloses a set up heat transfer device and carry out indirect heat transfer, when the air conditioner carries out the operation of refrigerating, the gas-liquid mixture state refrigerant that comes out from outdoor heat exchanger carries out indirect heat transfer with the low temperature low pressure gaseous state refrigerant that comes out from indoor heat exchanger in heat transfer device, can increase air conditioning system super-cooled rate, makes gas-liquid mixture state refrigerant become pure liquid state refrigerant to this reaches the purpose that reduces the indoor side noise of air conditioner. And the supercooling degree and the superheat degree can be adjusted by controlling the opening degree of the electronic expansion valve.
Description
Technical Field
The utility model relates to an air conditioner technical field especially relates to a from super-cooling structure and air conditioner.
Background
With the continuous development of air conditioning technology, users have made higher and higher requirements on the heat exchange efficiency of air conditioning units. For an air conditioning unit, various electric devices capable of adjusting parameters often determine the heat exchange efficiency of the air conditioning unit; when the air conditioner heats in winter, the indoor heat exchanger is at high pressure, the outdoor heat exchanger is at low pressure, and the high-temperature and high-pressure refrigerant is throttled into low-pressure gas-liquid two phases by the throttle valve after heat exchange of the indoor heat exchanger, enters the outdoor heat exchanger, and absorbs heat from the outdoor environment to evaporate. Although the air conditioning system in the prior art can provide heating, the air conditioner is originally designed based on the cooling condition, which also determines that the overall cooling performance of the air conditioner is better than the heating performance. Particularly, when the outdoor temperature is low, the heating performance of the air conditioner is further reduced, and if the frosting is serious, the frosting needs to be carried out regularly, and the heating performance is seriously influenced. According to analysis on the refrigeration principle, the better the condensation effect of the high-temperature and high-pressure refrigerant in the indoor heat exchanger is, the larger the supercooling degree is, the better the evaporation effect when the refrigerant enters the outdoor heat exchanger after throttling is, and the better the heating is. To achieve this, the following methods are commonly used in the prior art: the method is characterized in that an indoor heat exchanger, an indoor air volume or an outdoor heat exchanger is increased, but the methods have obvious defects of cost increase, difficulty in noise control and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem of how to improve the super-cooled rate when air conditioning system refrigerates among the above-mentioned prior art, provide one kind from super-cooled structure and air conditioner.
The utility model adopts the technical proposal that:
the utility model provides a from supercooling structure, include: the first refrigerant pipeline is connected between the outdoor heat exchanger of the air conditioner and the first refrigerant side of the indoor heat exchanger; and one end of the second refrigerant pipeline is connected with the second refrigerant side of the indoor heat exchanger, the other end of the second refrigerant pipeline is connected with the four-way valve or the compressor, the heat exchange device is further included, and the refrigerant in the first refrigerant pipeline and the refrigerant in the second refrigerant pipeline flow through the heat exchange device for indirect heat exchange.
In one embodiment, the other end of the second refrigerant pipeline is connected with a four-way valve, the first refrigerant pipeline is further connected with a third refrigerant pipeline, the third refrigerant pipeline is connected with the heat exchange device and a section of first refrigerant sub-pipeline on the first refrigerant pipeline in parallel, a second one-way valve is arranged on the third refrigerant pipeline, a first one-way valve is arranged on the first refrigerant sub-pipeline, the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger through the first one-way valve, and the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger through the second one-way valve.
Preferably, the heat exchange device is a shell and tube heat exchanger.
In another embodiment, the other end of the second refrigerant pipeline is connected to the compressor, and a first electronic throttling component is arranged at the end part, close to the indoor heat exchanger, of the first refrigerant pipeline.
The utility model also provides an air conditioner, including foretell from supercooling structure.
The air conditioner includes: the indoor heat exchanger is connected with a third interface of the four-way valve through a second refrigerant pipeline, and the outdoor heat exchanger is connected with a fourth interface of the four-way valve through a pipeline.
Furthermore, a first electronic throttling component is arranged on a pipeline of the first refrigerant pipeline close to the indoor heat exchanger, and a second electronic throttling component is arranged on a pipeline of the first refrigerant pipeline close to the outdoor heat exchanger.
And when the air conditioner operates in a refrigeration mode, the opening degree of the first electronic throttling component is controlled according to the supercooling degree of a refrigerant flowing out of the indoor heat exchanger.
When the air conditioner operates in a cooling mode, the first electronic throttling component is controlled to throttle, and when the air conditioner operates in a heating mode, the second electronic throttling component is controlled to throttle.
Preferably, the first electronic throttling component and the second electronic throttling component are electronic expansion valves.
Compared with the prior art, the utility model discloses a set up heat transfer device and carry out indirect heat transfer, when the air conditioner carries out the operation of refrigerating, the gas-liquid mixture state refrigerant that comes out from outdoor heat exchanger carries out indirect heat transfer with the low temperature low pressure gaseous state refrigerant that comes out from indoor heat exchanger in heat transfer device, can increase air conditioning system super-cooled rate, makes gas-liquid mixture state refrigerant become pure liquid state refrigerant to this reaches the purpose that reduces the indoor side noise of air conditioner. And the supercooling degree and the superheat degree can be adjusted by controlling the opening degree of the electronic expansion valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a heat exchanger according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the flow direction of the regional refrigeration coolant of the heat exchange device in the embodiment of the present invention;
fig. 4 is the embodiment of the present invention provides a schematic structural diagram of a heat exchange device for heating a refrigerant flowing direction.
11. A first refrigerant conduit; 111. a first refrigerant sub-conduit; 12. a second refrigerant conduit; 13. a third refrigerant conduit; 2. a heat exchange device; 31. a first check valve; 32. A second one-way valve; 41. a first electronic throttling component; 42. a second electronic throttling component; 5. an outdoor heat exchanger; 6. an indoor heat exchanger; 7. a four-way valve; 8. a compressor.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a can be used for indirect heating equipment such as air conditioner from supercooling structure mainly includes: the air conditioner comprises a first refrigerant pipeline 11, a second refrigerant pipeline 12 and a heat exchange device 2, wherein the first refrigerant pipeline 11 and the second refrigerant pipeline 12 are original heat exchange circulating pipelines of the air conditioner, specifically, two ends of the first refrigerant pipeline 11 are respectively connected between an outdoor heat exchanger 5 of the air conditioner and a first refrigerant side (the left side of the indoor heat exchanger in the figure) of an indoor heat exchanger 6, namely, refrigerants in the outdoor heat exchanger 5 and the indoor heat exchanger 6 can be conveyed through the first refrigerant pipeline 11; one end of the second refrigerant pipeline 12 is connected to a second refrigerant side of the indoor heat exchanger 6 (the refrigerant of the indoor heat exchanger 6 flows in from one refrigerant side, exchanges heat and then flows out from the other refrigerant side, and the right side of the indoor heat exchanger 6 in the figure is the second refrigerant side), and the other end is connected to the four-way valve 7; if the self-supercooling structure is applied to an air conditioner only having a refrigerating function, the other end of the second refrigerant pipeline 12 is connected with a compressor, and a gas-liquid separator and other components may be arranged in specific application; the middle sections of the first refrigerant pipeline 11 and the second refrigerant pipeline 12 are communicated with the heat exchange device 2, so that refrigerants in the first refrigerant pipeline 11 and the second refrigerant pipeline 12 can flow through the heat exchange device 2 simultaneously to perform indirect heat exchange, when an air conditioner performs refrigeration operation, a gas-liquid mixed refrigerant coming out of an outdoor heat exchanger performs indirect heat exchange with a low-temperature low-pressure gaseous refrigerant coming out of an indoor heat exchanger in the heat exchange device, the supercooling degree of an air conditioning system can be increased, the gas-liquid mixed refrigerant is changed into a pure liquid refrigerant, and the purpose of reducing the noise at the indoor side of the air conditioner is achieved.
In a specific embodiment, as shown in fig. 1 to 4, the air conditioner is an air conditioner with a function of switching cooling and heating by a four-way valve, that is, one end of the second refrigerant pipeline 12 is connected to the second refrigerant side of the indoor heat exchanger 6 (in the figure, connected to the right side of the indoor heat exchanger 6), and the other end is connected to the four-way valve 7. In order not to affect the operation and heating mode of the air conditioner, the first refrigerant pipeline 11 is further connected with a third refrigerant pipeline 13, that is, both ends of the third refrigerant pipeline 13 are connected to the first connecting pipeline, so that the third refrigerant pipeline 13 is connected in parallel with the heat exchanging device 2 and the first refrigerant sub-pipeline 111 (the first refrigerant sub-pipeline 111 is a section of pipeline intercepted and defined on the first refrigerant pipeline 11, that is, a sub-pipeline, and it can be obviously seen from fig. 1 that the section of sub-pipeline is connected in parallel with the third refrigerant pipeline 13), wherein the third refrigerant pipeline 13 is provided with a second check valve 32, the first refrigerant sub-pipeline 111 is provided with a first check valve 31, and the specific limiting directions of the two check valves are: the refrigerant passes through the first check valve 31 when flowing from the exterior heat exchanger 5 to the interior heat exchanger 6, and the refrigerant passes through the second check valve 32 when flowing from the interior heat exchanger 6 to the exterior heat exchanger 5. When the heating mode is operated, the refrigerant can flow from the third refrigerant pipeline 13 to the outdoor heat exchanger 5, and the heat exchange device 2 is avoided, so that the heating effect is ensured.
In the above embodiment, the end of the first refrigerant pipe 11 close to the indoor heat exchanger 6 is provided with the first electronic throttling component 41, the pipe of the first refrigerant pipe 11 close to the outdoor heat exchanger 5 is provided with the second electronic throttling component 42, when the air conditioner operates in the cooling mode, the first electronic throttling component is controlled to throttle, and when the air conditioner operates in the heating mode, the second electronic throttling component is controlled to throttle. Specifically, the first electronic throttling component 41 is installed in the indoor unit, the second electronic throttling component 42 is installed in the outdoor unit, and in order to facilitate throttling in the heating mode of air conditioner operation, the second electronic throttling component 42 is installed in the outdoor unit, so that the throttling effect of the heating mode can be improved, and in the heating mode of air conditioner operation, the first electronic throttling component 41 is fully opened, namely, the first electronic throttling component is equivalent to a pipe without the throttling effect.
In other embodiments, when the self-supercooling structure is applied to an air conditioner with only a single refrigeration function, one end of the second refrigerant pipeline is connected to the second refrigerant side of the outdoor heat exchanger, and the other end of the second refrigerant pipeline is connected to the compressor, and in particular, the other end of the second refrigerant pipeline may be further connected to a gas-liquid separator or other components for controlling the state of the refrigerant; at the moment, the end part of the first refrigerant pipeline, which is close to the indoor heat exchanger, is provided with the first electronic throttling component, namely only one electronic throttling component needs to be arranged.
The electronic throttling component is specifically an electronic expansion valve, and can also be other components with the throttling function.
The utility model also provides an air conditioner, including the aforesaid from the supercooling structure. The air conditioner specifically includes: the air conditioner comprises a compressor 8, a four-way valve 7, an indoor heat exchanger 6, an electronic throttling element and an outdoor heat exchanger 5, wherein the specific pipeline connection mode of the air conditioner is consistent with that of the existing air conditioner, the figure is taken as a basis for brief description, an exhaust pipeline and an air inlet pipeline of the compressor 8 are connected with a first interface and a second interface of the four-way valve 7, the indoor heat exchanger 6 is connected with a third interface of the four-way valve 7 through a second refrigerant pipeline 12, and the outdoor heat exchanger 5 is connected with a fourth interface of the four-way valve 7 through a pipeline. A first electronic throttling component is arranged on the pipeline of the first refrigerant pipeline 11 close to the indoor heat exchanger 6, and a second electronic throttling component is arranged on the pipeline of the first refrigerant pipeline 11 close to the outdoor heat exchanger 5.
In all the drawings, the solid line arrows indicate the flow direction of the refrigerant during the cooling operation, and the dotted line arrows indicate the flow direction of the refrigerant during the heating operation, which are specifically as follows:
during the refrigeration operation, the refrigerant starts to flow from the exhaust pipeline of the compressor 8 to the outdoor heat exchanger 5 through the four-way valve 7, flows from the outdoor heat exchanger 5 to the first one-way valve 31 and the shell-and-tube heat exchanger, is throttled by the first electronic throttling component 41, then exchanges heat through the indoor heat exchanger 6, and then flows back to the compressor 8 through the shell-and-tube heat exchanger and the four-way valve 7. During heating operation, the refrigerant is reversed by the four-way valve 7 from the exhaust pipeline of the compressor 8, passes through the shell-and-tube heat exchanger, then reaches the indoor heat exchanger 6, passes through the second one-way valve 32 of the third refrigerant pipeline 13 after coming out of the indoor heat exchanger 6, avoids the flow path of the shell-and-tube heat exchanger, is throttled by the second electronic throttling component close to the outdoor heat exchanger 5, passes through the outdoor heat exchanger 5 for heat exchange, and then returns to the compressor 8.
When the air conditioner operates in a refrigeration mode, the opening degree of the first electronic throttling component can be controlled according to the supercooling degree of the refrigerant flowing out of the indoor heat exchanger, specifically, for example, it is assumed that the supercooling degree of the gas-liquid mixed refrigerant from the outdoor heat exchanger is a, the supercooling degree of the pure liquid refrigerant is b, and the superheat degree of the gas refrigerant from the indoor heat exchanger is c. When the air conditioning system operates, the supercooling degree a is reduced, and then the system controls the opening of the first electronic throttling element to be increased and reduces the superheat degree c according to the reduced range of the a, so that the gas-liquid mixed refrigerant is controlled to be still in the pure liquid supercooling degree b; if the supercooling degree a is increased, the system controls the opening degree of the first electronic throttling element to be reduced and the superheat degree c to be increased according to the increased range of the degree a, so that the supercooling degree of the pure liquid refrigerant is controlled to be maintained at about b.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A self-overcooling structure, comprising: the first refrigerant pipeline is connected between the outdoor heat exchanger of the air conditioner and the first refrigerant side of the indoor heat exchanger; one end of the second refrigerant pipeline is connected with the second refrigerant side of the indoor heat exchanger, the other end of the second refrigerant pipeline is connected with the four-way valve or the compressor, and the indoor heat exchanger is characterized by further comprising a heat exchange device, and the refrigerant in the first refrigerant pipeline and the refrigerant in the second refrigerant pipeline flow through the heat exchange device to indirectly exchange heat.
2. The self-supercooling structure of claim 1, wherein a four-way valve is connected to the other end of the second refrigerant pipe, a third refrigerant pipe is further connected to the first refrigerant pipe, the third refrigerant pipe is connected in parallel to the heat exchanging device and a section of the first refrigerant sub-pipe of the first refrigerant pipe, a second check valve is arranged on the third refrigerant pipe, a first check valve is arranged on the first refrigerant sub-pipe, the refrigerant passes through the first check valve when flowing from the outdoor heat exchanger to the indoor heat exchanger, and the refrigerant passes through the second check valve when flowing from the indoor heat exchanger to the outdoor heat exchanger.
3. The self-subcooling structure of claim 1, wherein the heat exchange device is a shell and tube heat exchanger.
4. The self-supercooling structure of claim 1, wherein the other end of the second refrigerant pipe is connected to a compressor of the air conditioner, and a first electronic throttling element is disposed at an end of the first refrigerant pipe close to the indoor heat exchanger.
5. An air conditioner, characterized by comprising the self-supercooling structure of any one of claims 1 to 3.
6. The air conditioner according to claim 5, wherein the air conditioner comprises: the indoor heat exchanger is connected with a third interface of the four-way valve through a second refrigerant pipeline, and the outdoor heat exchanger is connected with a fourth interface of the four-way valve through a pipeline.
7. The air conditioner as claimed in claim 6, wherein a first electronic throttling element is disposed on a pipe of the first refrigerant pipe close to the indoor heat exchanger, and a second electronic throttling element is disposed on a pipe of the first refrigerant pipe close to the outdoor heat exchanger.
8. The air conditioner as claimed in claim 7, wherein the opening degree of the first electronic throttling element is controlled according to a degree of supercooling of a refrigerant flowing out of the indoor heat exchanger in the cooling mode of the air conditioner.
9. The air conditioner according to claim 7, wherein when the air conditioner operates in a cooling mode, throttling is performed by controlling the first electronic throttling element, and when the air conditioner operates in a heating mode, throttling is performed by controlling the second electronic throttling element.
10. The air conditioner according to claim 7, wherein the first electronic throttling element and the second electronic throttling element are electronic expansion valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220627039.6U CN217154605U (en) | 2022-03-22 | 2022-03-22 | Self-supercooling structure and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220627039.6U CN217154605U (en) | 2022-03-22 | 2022-03-22 | Self-supercooling structure and air conditioner |
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| CN217154605U true CN217154605U (en) | 2022-08-09 |
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| CN202220627039.6U Active CN217154605U (en) | 2022-03-22 | 2022-03-22 | Self-supercooling structure and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484944A (en) * | 2022-03-22 | 2022-05-13 | 珠海格力电器股份有限公司 | Self-supercooling structure and air conditioner |
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- 2022-03-22 CN CN202220627039.6U patent/CN217154605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484944A (en) * | 2022-03-22 | 2022-05-13 | 珠海格力电器股份有限公司 | Self-supercooling structure and air conditioner |
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