CN213599600U - Fin heat exchanger connection structure that defrosting was optimized - Google Patents
Fin heat exchanger connection structure that defrosting was optimized Download PDFInfo
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- CN213599600U CN213599600U CN202022542794.8U CN202022542794U CN213599600U CN 213599600 U CN213599600 U CN 213599600U CN 202022542794 U CN202022542794 U CN 202022542794U CN 213599600 U CN213599600 U CN 213599600U
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Abstract
A fin heat exchanger connecting structure with optimized defrosting comprises an indoor heat exchanger, a capillary tube assembly, an outdoor heat exchanger and a compressor which are sequentially connected to form a circulation loop; the outdoor heat exchanger is provided with a plurality of groups of heat exchange pipelines which are sequentially arranged from top to bottom, the indoor heat exchanger is provided with a heat exchange output port, and the heat exchange output port of the indoor heat exchanger is connected with the input end of the capillary tube assembly; a connecting pipe for conveying liquid refrigerant after heat exchange of the indoor heat exchanger is arranged between the input end of the group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger and the heat exchange output end of the indoor heat exchanger, and a return pipe is arranged between the output end of the group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger and the input end of the capillary tube assembly. The utility model discloses be provided with the connecting pipe for liquid refrigerant after the heat transfer with indoor heat exchanger introduces in a set of heat transfer pipeline of outdoor heat exchanger bottommost and improve its temperature, improve the phenomenon of frosting.
Description
Technical Field
The utility model relates to a finned heat exchanger connection structure that defrosting was optimized.
Background
When the air conditioner heats in winter, the indoor heat exchanger is used as a condenser, and the outdoor heat exchanger is used as an evaporator;
the evaporator needs to absorb heat when evaporating the refrigerant, the temperature of the outdoor heat exchanger is reduced after the heat is absorbed (namely, the temperature of a heat exchange pipeline and a heat exchange fin of the outdoor heat exchanger is reduced), the outdoor air meets the colder outdoor heat exchanger to form condensed water, when the temperature of the outdoor heat exchanger is further reduced in the heat exchange process, the condensed water can become frost, and the frost can be continuously thickened because the air conditioner heats all the time, so that people can see the frosting and icing phenomena existing on the outdoor heat exchanger in winter.
In addition, because the bottom of the outdoor heat exchanger is arranged on the ground, for example, in a severe cold region, the temperature of the bottom of the outdoor heat exchanger is low, and the frosting and icing phenomena of a group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger are the most serious, so that certain limitations exist.
Therefore, there is a need for an improved connection structure of an outdoor heat exchanger to improve the frosting phenomenon of a group of heat exchange pipes at the bottommost portion of the outdoor heat exchanger.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a finned heat exchanger connection structure that defrosting was optimized, it is provided with the connecting pipe for liquid refrigerant after the indoor heat exchanger heat transfer introduces in a set of heat transfer pipeline of outdoor heat exchanger bottommost and improve its temperature, improves the phenomenon of frosting.
The purpose of the utility model is realized like this:
a fin heat exchanger connecting structure with optimized defrosting comprises an indoor heat exchanger, a capillary tube assembly, an outdoor heat exchanger and a compressor which are sequentially connected to form a circulation loop;
the outdoor heat exchanger is provided with a plurality of groups of heat exchange pipelines which are sequentially arranged from top to bottom, the indoor heat exchanger is provided with a heat exchange output port, and the heat exchange output port of the indoor heat exchanger is connected with the input end of the capillary tube assembly;
a connecting pipe used for conveying liquid refrigerant after heat exchange of the indoor heat exchanger is arranged between the input end of the group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger and the heat exchange output end of the indoor heat exchanger, and a return pipe is arranged between the output end of the group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger and the input end of the capillary tube assembly.
The capillary component comprises a main pipeline, a distributor and a plurality of component liquid pipes which are connected in sequence;
the distributor is provided with a first input port connected with the output end of the main pipeline and a plurality of first output ports which are connected with the output end of the first input port and have the same number with the liquid distributing pipes.
The output end of the return pipe is connected with the input end of the main pipeline.
The heat exchange output port of the indoor heat exchanger is connected with the input end of the main pipeline;
the output ends of the liquid distributing pipes correspond to other heat exchange pipelines except the group of heat exchange pipelines at the bottommost one by one, and the output ends of the liquid distributing pipes are connected with the input ends of the corresponding heat exchange pipelines.
A first one-way valve is arranged on a liquid distribution pipe connected with a penultimate heat exchange pipeline at the bottom of the outdoor heat exchanger;
when fluid flows from the main pipeline to the liquid separating pipe through the distributor, the first one-way valve is not communicated; when the fluid flows from the liquid distribution pipe to the main pipeline through the distributor, the first one-way valve is communicated.
The flow path lengths of the plurality of groups of heat exchange pipelines are sequentially reduced from top to bottom.
The utility model has the advantages as follows:
the fin heat exchanger connecting structure with optimized defrosting is provided with the connecting pipe, and is used for introducing a part of liquid refrigerant after heat exchange of the indoor heat exchanger into a group of heat exchange pipelines at the bottommost part of the outdoor heat exchanger, increasing the temperature of the liquid refrigerant and improving the frosting and icing phenomena of the group of heat exchange pipelines at the bottommost part.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, the optimized fin heat exchanger connecting structure for defrosting includes an indoor heat exchanger 2, a capillary tube assembly, an outdoor heat exchanger 1 and a compressor 3 which are connected in sequence to form a circulation loop;
when the air conditioner heats, the gaseous refrigerant is compressed by the compressor 3, and the gaseous refrigerant is compressed into the high-temperature high-pressure gaseous refrigerant and is conveyed to the indoor heat exchanger 2;
the high-temperature high-pressure gas refrigerant is changed into a medium-temperature high-pressure liquid refrigerant after being subjected to heat exchange by the indoor heat exchanger 2 and is conveyed to the capillary tube assembly;
the liquid refrigerant with medium temperature and high pressure passes through the capillary tube assembly to be changed into a gas-liquid mixed refrigerant with low pressure and low temperature and is conveyed to the outdoor heat exchanger 1;
the low-pressure low-temperature gas-liquid mixed refrigerant is changed into a low-pressure high-temperature gaseous refrigerant after being subjected to heat exchange by the outdoor heat exchanger 1.
The outdoor heat exchanger 1 is provided with a plurality of groups of heat exchange pipelines 4 which are sequentially arranged from top to bottom, the indoor heat exchanger 2 is provided with a heat exchange output port, and the heat exchange output port of the indoor heat exchanger 2 is connected with the input end of the capillary tube assembly;
a connecting pipe 5 for conveying liquid refrigerant after heat exchange of the indoor heat exchanger 2 is arranged between the input end of the group of heat exchange pipelines 4 at the bottommost part of the outdoor heat exchanger 1 and the heat exchange output end of the indoor heat exchanger 2, and a return pipe 10 is arranged between the output end of the group of heat exchange pipelines 4 at the bottommost part of the outdoor heat exchanger 1 and the input end of the capillary tube assembly.
The fin heat exchanger connecting structure with optimized defrosting is provided with the connecting pipe 5, and is used for introducing a part of liquid refrigerant (namely, intermediate-temperature high-pressure liquid refrigerant) after heat exchange of the indoor heat exchanger 2 into the group of heat exchange pipelines 4 at the bottommost of the outdoor heat exchanger 1 and improving the temperature of the liquid refrigerant, wherein the temperature of the intermediate-temperature high-pressure liquid refrigerant is higher than the outdoor environment temperature, and when the intermediate-temperature high-pressure liquid refrigerant is input into the group of heat exchange pipelines 4 at the bottommost, gasification and heat absorption cannot be carried out, so that the temperature of the group of heat exchange pipelines 4 at the bottommost can be improved and maintained, and the frosting and icing phenomena of the group of.
The liquid refrigerant with medium temperature and high pressure is subjected to heat exchange by the group of heat exchange pipelines 4 at the bottommost part and then is converged into the input end of the capillary tube assembly again through the return pipe 10.
Further, the capillary component comprises a main pipeline 6, a distributor 7 and a plurality of component liquid pipes 8 which are connected in sequence;
the distributor 7 is provided with a first input port connected with the output end of the main pipeline 6 and a plurality of first output ports which are connected with the output end of the first input port and have the same number with the liquid separating pipes 8.
The first input port and the first output port are respectively located at two ends of the distributor 7, and the first output ports are uniformly distributed at intervals along the circumferential direction.
Further, the output end of the return pipe 10 is connected with the input end of the main pipe 6.
Further, a heat exchange output port of the indoor heat exchanger 2 is connected with an input end of the main pipeline 6;
the output ends of the liquid separating pipes 8 correspond to other heat exchange pipelines 4 except the group of heat exchange pipelines 4 at the bottommost one by one, and the output ends of the liquid separating pipes 8 are connected with the input ends of the corresponding heat exchange pipelines 4.
That is, the output ends of the other heat exchange pipelines 4 except the group of heat exchange pipelines 4 at the bottommost part are connected with the input end of the compressor 3, and the output end of the compressor 3 is connected with the input end of the indoor heat exchanger 2.
Further, a first one-way valve 9 is arranged on a liquid distribution pipe 8 connected with the heat exchange pipeline 4 of the penultimate group at the bottom of the outdoor heat exchanger 1;
when the fluid flows from the main pipeline 6 to the liquid separating pipe 8 through the distributor 7, the first one-way valve 9 is not communicated; the first non return valve 9 is open when fluid flows from the tapping line 8 through the distributor 7 to the main line 6.
Namely, when the air conditioner is in a heating state, the heat exchange pipelines 4 of the penultimate group at the bottom of the outdoor heat exchanger 1 cannot input a refrigerant for heat exchange, the heat exchange pipelines 4 of the penultimate group at the bottom are in a shielding state, and the heat exchange of the refrigerant is not carried out, so that the temperature is favorably kept, the temperature is equivalent to the outdoor environment temperature, and the phenomena of frosting and icing are improved.
Further, a second one-way valve 11 is arranged between the input end of the bottommost group of heat exchange pipelines 4 and the heat exchange output port of the indoor heat exchanger 2, namely, the second one-way valve 11 is arranged on the connecting pipe 5, and when the fluid flows to the bottommost group of heat exchange pipelines 4 from the heat exchange output port of the indoor heat exchanger 2, the second one-way valve 11 is switched on; when the fluid flows from the bottommost group of heat exchange pipes 4 to the indoor heat exchanger 2, the second check valve 11 is not conducted.
Furthermore, the fan is arranged on the side portion of the outdoor heat exchanger 1, the lower the position of the outdoor heat exchanger 1 is, the larger the blocking is, so that the higher the wind speed close to the top of the outdoor heat exchanger 1 is, the more sufficient the heat exchange is, the flow lengths of the plurality of groups of heat exchange pipelines 4 are sequentially reduced from top to bottom, and the arrangement of the flow lengths of the heat exchange pipelines 4 is favorable for improving the heat exchange efficiency of the outdoor heat exchanger 1.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (6)
1. A fin heat exchanger connecting structure for defrosting optimization is characterized by comprising an indoor heat exchanger (2), a capillary tube assembly, an outdoor heat exchanger (1) and a compressor (3) which are sequentially connected to form a circulation loop;
the outdoor heat exchanger (1) is provided with a plurality of groups of heat exchange pipelines (4) which are sequentially arranged from top to bottom, the indoor heat exchanger (2) is provided with a heat exchange output port, and the heat exchange output port of the indoor heat exchanger (2) is connected with the input end of the capillary tube assembly;
a connecting pipe (5) used for conveying liquid refrigerants after heat exchange of the indoor heat exchanger (2) is arranged between the input end of the group of heat exchange pipelines (4) at the bottommost part of the outdoor heat exchanger (1) and the heat exchange output port of the indoor heat exchanger (2), and a return pipe (10) is arranged between the output end of the group of heat exchange pipelines (4) at the bottommost part of the outdoor heat exchanger (1) and the input end of the capillary tube assembly.
2. The connection structure of the defrosting optimized fin heat exchanger according to the claim 1, characterized in that the capillary tube assembly comprises a main tube (6), a distributor (7) and a plurality of component liquid tubes (8) which are connected in sequence;
the distributor (7) is provided with a first input port connected with the output end of the main pipeline (6) and a plurality of first output ports which are connected with the output end of the first input port and have the same number with the liquid separating pipes (8).
3. The defrosting optimized fin heat exchanger connection according to claim 2, wherein the output end of the return pipe (10) is connected with the input end of the main pipe (6).
4. The defrosting optimized finned heat exchanger connecting structure according to claim 2, wherein the heat exchange output of the indoor heat exchanger (2) is connected with the input end of the main pipe (6);
the output ends of the liquid distributing pipes (8) correspond to other heat exchange pipelines (4) except the bottommost group of heat exchange pipelines (4) one by one, and the output ends of the liquid distributing pipes (8) are connected with the input ends of the corresponding heat exchange pipelines (4).
5. The connection structure of the fin heat exchanger optimized for defrosting according to the claim 4, characterized in that a first one-way valve (9) is arranged on a liquid distribution pipe (8) connected with the heat exchange pipes (4) of the penultimate group at the bottom of the outdoor heat exchanger (1);
when fluid flows from the main pipeline (6) to the liquid distribution pipe (8) through the distributor (7), the first one-way valve (9) is not communicated; when the fluid flows from the liquid separating pipe (8) to the main pipe (6) through the distributor (7), the first one-way valve (9) is communicated.
6. The connection structure of the fin heat exchanger optimized for defrosting according to claim 1, characterized in that the flow path lengths of the plurality of groups of heat exchange tubes (4) are sequentially reduced from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022542794.8U CN213599600U (en) | 2020-11-05 | 2020-11-05 | Fin heat exchanger connection structure that defrosting was optimized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022542794.8U CN213599600U (en) | 2020-11-05 | 2020-11-05 | Fin heat exchanger connection structure that defrosting was optimized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213599600U true CN213599600U (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022542794.8U Active CN213599600U (en) | 2020-11-05 | 2020-11-05 | Fin heat exchanger connection structure that defrosting was optimized |
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|---|---|
| CN (1) | CN213599600U (en) |
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2020
- 2020-11-05 CN CN202022542794.8U patent/CN213599600U/en active Active
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