CN220062199U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN220062199U CN220062199U CN202321350424.1U CN202321350424U CN220062199U CN 220062199 U CN220062199 U CN 220062199U CN 202321350424 U CN202321350424 U CN 202321350424U CN 220062199 U CN220062199 U CN 220062199U
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- CN
- China
- Prior art keywords
- heat exchanger
- air conditioning
- conditioning system
- check valve
- indoor heat
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 62
- 239000003507 refrigerant Substances 0.000 claims abstract description 51
- 238000004781 supercooling Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 43
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000003584 silencer Effects 0.000 description 4
- 238000010257 thawing Methods 0.000 description 3
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical group FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model relates to the technical field of air conditioners, in particular to an air conditioning system, which aims to solve the problems of chassis icing and poor refrigerating effect of the air conditioning system. For this purpose, the air conditioning system of the present utility model comprises an indoor heat exchanger, an outdoor heat exchanger and a secondary subcooling device; the device also comprises a check valve group and a throttling device; the throttling device is respectively communicated with the outdoor heat exchanger, the one-way valve group and the secondary supercooling device; the check valve group comprises a first check valve and a second check valve; the first check valve is arranged between the throttling device and the indoor heat exchanger and is arranged to only allow the refrigerant to flow from the outdoor heat exchanger to the indoor heat exchanger through the throttling device; the second check valve is disposed between the indoor heat exchanger and the secondary subcooling device and is configured to allow only refrigerant to flow from the indoor heat exchanger to the outdoor heat exchanger through the throttling device and the secondary subcooling device. By additionally arranging the one-way valve group, the flow direction of the refrigerant in the refrigerating and heating modes is changed, the refrigerating effect is improved, and chassis icing is avoided.
Description
Technical Field
The utility model relates to the technical field of air conditioners, and particularly provides an air conditioning system.
Background
At present, when an air conditioning system with a secondary supercooling device operates in a refrigeration mode, the secondary supercooling device may cause refrigerant to evaporate in advance, so that the refrigerant entering an indoor heat exchanger is in a gas-liquid two-phase state, and the refrigeration effect is affected; when the heating mode is operated, the air conditioning system has the problem that defrosting is not clean caused by the fact that the temperature of the contact part of the outdoor heat exchanger and the chassis is too low, and the chassis is caused to freeze, so that the heating effect is affected.
Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the technical problems, namely the problems of chassis icing and poor refrigerating effect of the existing air conditioning system.
In order to achieve the above object, the present utility model provides an air conditioning system including an indoor heat exchanger, an outdoor heat exchanger, and a secondary supercooling apparatus; the air conditioning system also comprises a check valve group and a throttling device; the throttling device is respectively communicated with the outdoor heat exchanger, the one-way valve group and the secondary supercooling device; the check valve group comprises a first check valve and a second check valve; the first check valve is disposed between the throttle device and the indoor heat exchanger and is configured to allow only refrigerant to flow from the outdoor heat exchanger to the indoor heat exchanger through the throttle device; the second check valve is disposed between the indoor heat exchanger and the secondary subcooling device and is configured to allow only the refrigerant to flow from the indoor heat exchanger to the outdoor heat exchanger through the throttling device and the secondary subcooling device.
In the preferred technical scheme of the air conditioning system, the secondary supercooling device comprises a first sub-condenser and a second sub-condenser which are arranged in parallel, wherein the first sub-condenser is connected with the throttling device after being connected with the outdoor heat exchanger in parallel, and the second sub-condenser is connected with the first check valve after being connected with the second check valve.
In the preferable technical scheme of the air conditioning system, the air conditioning system further comprises a compressor, and the compressors are respectively connected with the indoor heat exchanger, the outdoor heat exchanger and the first sub-condenser.
In the preferable technical scheme of the air conditioning system, the air conditioning system further comprises a four-way valve, and the compressor is connected with the indoor heat exchanger, the outdoor heat exchanger and the first sub-condenser through the four-way valve respectively.
In the preferable technical scheme of the air conditioning system, the air conditioning system further comprises a gas-liquid separator, a first end of the gas-liquid separator is connected with the four-way valve, and a second end of the gas-liquid separator is connected with the compressor.
In the preferable technical scheme of the air conditioning system, the air conditioning system further comprises a silencer, and the silencer is connected between the compressor and the four-way valve.
In the preferable technical scheme of the air conditioning system, the air conditioning system further comprises a liquid storage tank, and the liquid storage tank is connected between the indoor heat exchanger and the one-way valve group.
In the preferable technical scheme of the air conditioning system, the throttling device is an electronic expansion valve, a capillary tube or a throttling electromagnetic valve.
In the preferable technical scheme of the air conditioning system, the indoor heat exchanger is a water fluorine heat exchanger.
In the preferable technical scheme of the air conditioning system, the outdoor heat exchanger is a condenser.
The air conditioning system comprises an indoor heat exchanger, an outdoor heat exchanger and a secondary supercooling device; the air conditioning system also comprises a check valve group and a throttling device; the throttling device is respectively communicated with the outdoor heat exchanger, the one-way valve group and the secondary supercooling device; the check valve group comprises a first check valve and a second check valve; the first check valve is arranged between the throttling device and the indoor heat exchanger and is arranged to only allow the refrigerant to flow from the outdoor heat exchanger to the indoor heat exchanger through the throttling device; the second check valve is disposed between the indoor heat exchanger and the secondary subcooling device and is configured to allow only refrigerant to flow from the indoor heat exchanger to the outdoor heat exchanger through the throttling device and the secondary subcooling device. By additionally arranging the one-way valve group, the flow direction of the refrigerant in the refrigerating and heating modes is changed, and the refrigerant can be prevented from flowing out of the outdoor heat exchanger and then entering the secondary supercooling device again in the refrigerating mode, so that the problem that the refrigerating effect is influenced by the refrigerant evaporation in advance can be effectively avoided; in the heating mode, the refrigerant can flow through the secondary supercooling device to heat the contact part of the outdoor heat exchanger and the chassis, so that defrosting of the contact part of the outdoor heat exchanger and the chassis can be effectively prevented, and the problem of chassis icing is avoided.
Further, the second-stage supercooling device comprises a first sub-condenser and a second sub-condenser which are arranged in parallel, wherein the first sub-condenser is connected with the throttling device after being connected with the outdoor heat exchanger in parallel, and the second sub-condenser is connected with the first check valve after being connected with the second check valve. In the refrigeration mode, the refrigerant flows through the first sub-condenser to improve the refrigeration effect of the air conditioning system; in the heating mode, the refrigerant can heat the contact part of the outdoor heat exchanger and the chassis when flowing through the second sub-condenser, so that the chassis is prevented from being frozen.
Further, the air conditioning system also comprises a gas-liquid separator, wherein the first end of the gas-liquid separator is connected with the four-way valve, and the second end of the gas-liquid separator is connected with the compressor; the gas-liquid separator is used for separating gas from liquid of the refrigerant flowing into the compressor, so as to prevent liquid impact on the compressor.
Further, the air conditioning system also comprises a liquid storage tank, and the liquid storage tank is connected between the indoor heat exchanger and the one-way valve group; the liquid storage tank is used for storing the refrigerant and can supplement and store the refrigerant participating in circulation.
Drawings
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the cooling flow in the cooling mode of the air conditioning system of the present utility model;
fig. 2 is a schematic diagram of the flow of cooling air in the heating mode of the air conditioning system according to the present utility model.
Reference numerals:
1. an indoor heat exchanger; 2. an outdoor heat exchanger; 3. a secondary subcooling device; 31. a first sub-condenser; 32. a second sub-condenser; 4. a one-way valve group; 41. a first one-way valve; 42. a second one-way valve; 5. a throttle device; 6. a compressor; 7. a four-way valve; 8. a gas-liquid separator; 9. a muffler; 10. and a liquid storage tank.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. For example, although the description is made with respect to the multi-split central air conditioner, the technical solution of the present utility model is not limited thereto, and those skilled in the art can apply the technical solution of the present utility model to other types of air conditioning systems, such as an on-hook air conditioner, as required, and such changes to the application object do not deviate from the principle and scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "outer," "inner," "top," "bottom," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "disposed," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically, directly, or indirectly via an intermediary. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
When the air conditioning system with the secondary supercooling device is in a refrigerating mode, refrigerant is evaporated in advance to influence the refrigerating effect; the utility model provides an air conditioning system, which aims to solve the problems of poor chassis freezing and refrigeration effect of the traditional air conditioning system when a heating mode is operated, and can prevent the refrigerant from flowing out of an outdoor heat exchanger and then entering a secondary supercooling device again in the cooling mode by additionally arranging a check valve group to change the flow direction of the refrigerant in the cooling and heating modes, thereby effectively avoiding the problem that the refrigerant evaporates in advance to influence the refrigeration effect; in the heating mode, the refrigerant can flow through the secondary supercooling device to heat the contact part of the outdoor heat exchanger and the chassis, so that defrosting of the contact part of the outdoor heat exchanger and the chassis can be effectively prevented, and the problem of chassis icing is avoided.
Referring first to fig. 1 and 2, an air conditioning system of the present utility model will be described. Wherein, FIG. 1 is a schematic diagram of the flow of cooling medium in the cooling mode of the air conditioning system of the present utility model; fig. 2 is a schematic diagram of the flow of cooling air in the heating mode of the air conditioning system according to the present utility model.
As shown in fig. 1 and 2, the air conditioning system of the present utility model includes an indoor heat exchanger 1, an outdoor heat exchanger 2, and a secondary supercooling device 3; the air conditioning system also comprises a check valve group 4 and a throttling device 5; the throttling device 5 is respectively communicated with the outdoor heat exchanger 2, the check valve group 4 and the secondary supercooling device 3; wherein the check valve set 4 comprises a first check valve 41 and a second check valve 42; the first check valve 41 is provided between the throttle device 5 and the indoor heat exchanger 1, and is provided to allow only the refrigerant to flow from the outdoor heat exchanger 2 to the indoor heat exchanger 1 through the throttle device 5; the second check valve 42 is provided between the indoor heat exchanger 1 and the second-stage supercooling device 3, and is provided to allow only the refrigerant to flow from the indoor heat exchanger 1 to the outdoor heat exchanger 2 through the throttle device 5 and the second-stage supercooling device 3.
It should be noted that the present utility model is not limited to the type of the refrigerant, and those skilled in the art can flexibly adjust the refrigerant according to the actual product requirement. For example, the refrigerant is difluoromethane, freon, or the like.
Preferably, as shown in fig. 1 and 2, the secondary subcooling device 3 includes two first sub-condensers 31 and second sub-condensers 32 arranged in parallel, wherein the first sub-condensers 31 are connected in parallel with the outdoor heat exchanger 2 and then connected with the throttling device 5, and the second sub-condensers 32 are connected in parallel with the first check valves 41 and then connected with the second check valves 42.
Further, in the refrigeration mode, the refrigerant flows through the first sub-condenser 31 to enhance the refrigeration effect of the air conditioning system; in the heating mode, the refrigerant flows through the second sub-condenser 32 to heat the portion of the outdoor heat exchanger 2 in contact with the chassis, thereby preventing the chassis from freezing.
Preferably, as shown in fig. 1 and 2, the air conditioning system further includes a compressor 6, and the compressor 6 is connected to the indoor heat exchanger 1, the outdoor heat exchanger 2, and the first sub-condenser 31, respectively.
Preferably, as shown in fig. 1 and 2, the air conditioning system further includes a four-way valve 7, and the compressor 6 is connected to the indoor heat exchanger 1, the outdoor heat exchanger 2, and the first sub-condenser 31 through the four-way valve 7, respectively.
Preferably, as shown in fig. 1 and 2, the air conditioning system further includes a gas-liquid separator 8, a first end of the gas-liquid separator 8 is connected to the four-way valve 7, and a second end of the gas-liquid separator 8 is connected to the compressor 6. The gas-liquid separator 8 is used for separating gas from liquid of the refrigerant flowing into the compressor 6, and prevents liquid impact from being generated on the compressor 6.
Preferably, as shown in fig. 1 and 2, the air conditioning system further includes a muffler 9, and the muffler 9 is connected between the compressor 6 and the four-way valve 7.
Specifically, the four-way valve 7 includes four ports, namely, a D port, an E port, a C port, and an S port, wherein the D port of the four-way valve 7 is connected with the muffler 9, the E port of the four-way valve 7 is connected with the indoor heat exchanger 1, the S port of the four-way valve 7 is connected with the gas-liquid separator 8, and the C port of the four-way valve 7 is connected with the outdoor heat exchanger 2 and the first sub-condenser 31.
Preferably, as shown in fig. 1 and 2, the air conditioning system further includes a liquid storage tank 10, and the liquid storage tank 10 is connected between the indoor heat exchanger 1 and the check valve group 4. The liquid storage tank 10 is used for storing a refrigerant, and can supplement and store the refrigerant participating in circulation. When the working load is large, the refrigerant quantity requirement is large, and at the moment, the refrigerant stored in the liquid storage tank 10 can be supplemented; when the work load is small, the refrigerant demand is small, and at this time, an excessive refrigerant may be stored in the liquid storage tank 10.
Specifically, one end of the liquid storage tank 10 is connected to the indoor heat exchanger 1, and the other end is connected to the first check valve 41 and the second check valve 42, respectively.
It should be noted that the present utility model is not limited to the type of the throttle device 5, and those skilled in the art can flexibly adjust the throttle device according to actual product requirements. The throttling means 5 is for example an electronic expansion valve, a capillary tube or a throttling solenoid valve.
Preferably, the indoor heat exchanger 1 is a water fluorine heat exchanger.
Preferably, the indoor heat exchanger 1 is a plate heat exchanger, which can effectively improve the refrigerating efficiency of the air conditioning system.
Preferably, the outdoor heat exchanger 2 is a condenser.
The refrigerant flow direction when the air conditioning system of the present utility model is in an operating state will be described with reference to fig. 1 and 2.
When the air conditioning system is in the refrigeration mode, as shown in fig. 1, the high-temperature and high-pressure refrigerant is discharged from the compressor 6, flows through the silencer 9, flows into the port C from the port D of the four-way valve 7, then the refrigerant is divided into two paths, one path is evaporated through the outdoor heat exchanger 2, the other path is evaporated through the first sub-condenser 31, the high-pressure and high-temperature liquid refrigerant after merging enters the throttling device 5, is throttled by the throttling device 5 and becomes a low-temperature and low-pressure liquid refrigerant, then flows into the indoor heat exchanger 1 through the first one-way valve 41 and the liquid storage tank 10 for heat exchange, and the low-temperature and low-pressure gaseous refrigerant after heat exchange flows into the port S from the port E of the four-way valve 7 and flows out, and then returns into the compressor 6 through the gas-liquid separator 8.
When the air conditioning system is in the heating mode, as shown in fig. 2, the high-temperature and high-pressure refrigerant is discharged from the compressor 6, flows through the silencer 9, flows into the port E from the port D of the four-way valve 7, flows into the indoor heat exchanger 1 for heat exchange, the low-temperature and high-pressure liquid refrigerant after heat exchange enters the second sub-condenser 32 through the liquid storage tank 10 and the second one-way valve 42, flows into the throttling device 5 through the low-temperature and high-pressure liquid refrigerant after passing through the second sub-condenser 32, is throttled by the throttling device 5 and becomes the low-temperature and low-pressure liquid refrigerant, and then the refrigerant is divided into two paths, one path is evaporated through the outdoor heat exchanger 2, the other path is evaporated through the first sub-condenser 31, and the low-temperature and low-pressure gaseous refrigerant after merging flows into the port S from the port C of the four-way valve 7 and flows back into the compressor 6 through the gas-liquid separator 8.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (10)
1. An air conditioning system comprising an indoor heat exchanger, an outdoor heat exchanger, and a secondary subcooling device; the air conditioning system is characterized by further comprising a check valve group and a throttling device; the throttling device is respectively communicated with the outdoor heat exchanger, the one-way valve group and the secondary supercooling device; the check valve group comprises a first check valve and a second check valve;
the first check valve is disposed between the throttle device and the indoor heat exchanger and is configured to allow only refrigerant to flow from the outdoor heat exchanger to the indoor heat exchanger through the throttle device;
the second check valve is disposed between the indoor heat exchanger and the secondary subcooling device and is configured to allow only the refrigerant to flow from the indoor heat exchanger to the outdoor heat exchanger through the throttling device and the secondary subcooling device.
2. The air conditioning system of claim 1, wherein the secondary subcooling device comprises two first sub-condensers and a second sub-condenser arranged in parallel, wherein the first sub-condenser is connected in parallel with the outdoor heat exchanger and then connected with the throttling device, and the second sub-condenser is connected in parallel with the first check valve and then connected with the second check valve.
3. The air conditioning system of claim 2, further comprising a compressor connected to the indoor heat exchanger, the outdoor heat exchanger, and the first sub-condenser, respectively.
4. The air conditioning system of claim 3, further comprising a four-way valve through which the compressor is connected to the indoor heat exchanger, the outdoor heat exchanger, and the first sub-condenser, respectively.
5. The air conditioning system of claim 4, further comprising a gas-liquid separator, a first end of the gas-liquid separator being connected to the four-way valve and a second end of the gas-liquid separator being connected to the compressor.
6. The air conditioning system of claim 4, further comprising a muffler connected between the compressor and the four-way valve.
7. The air conditioning system of claim 5, further comprising a liquid reservoir connected between the indoor heat exchanger and the one-way valve assembly.
8. An air conditioning system according to claim 3, wherein the throttling means is an electronic expansion valve, a capillary tube or a throttling solenoid valve.
9. The air conditioning system of claim 1, wherein the indoor heat exchanger is a water fluorine heat exchanger.
10. The air conditioning system of claim 1, wherein the outdoor heat exchanger is a condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321350424.1U CN220062199U (en) | 2023-05-30 | 2023-05-30 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321350424.1U CN220062199U (en) | 2023-05-30 | 2023-05-30 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220062199U true CN220062199U (en) | 2023-11-21 |
Family
ID=88764737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321350424.1U Active CN220062199U (en) | 2023-05-30 | 2023-05-30 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220062199U (en) |
-
2023
- 2023-05-30 CN CN202321350424.1U patent/CN220062199U/en active Active
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