CN215765644U - Outdoor heat exchanger modularization defroster of domestic central air conditioning - Google Patents
Outdoor heat exchanger modularization defroster of domestic central air conditioning Download PDFInfo
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- CN215765644U CN215765644U CN202121557871.5U CN202121557871U CN215765644U CN 215765644 U CN215765644 U CN 215765644U CN 202121557871 U CN202121557871 U CN 202121557871U CN 215765644 U CN215765644 U CN 215765644U
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Abstract
The utility model discloses a modularized defrosting device for an outdoor heat exchanger of a household central air conditioner, which comprises a compressor, wherein the compressor is respectively connected with a four-way valve and a gas-liquid separator, the four-way valve is respectively connected with an indoor heat exchanger, an outdoor heat exchanger and the gas-liquid separator, and the indoor heat exchanger is connected with the outdoor heat exchanger through an expansion valve and an electric valve. According to the technical scheme, the outdoor heat exchange side of the household central air-conditioning unit is modularized, heat absorption and defrosting are respectively realized through the modular double-chamber external heat exchangers, two refrigerants are respectively mixed after heat exchange in the modular double-chamber external heat exchangers, then flow through the four-way valve and the gas-liquid separator and finally return to the compressor, and then the state exchange of the modular double-chamber external heat exchangers is carried out, so that the running process of heating and defrosting of the unit at the same time is realized, and the indoor thermal comfort during running of the unit in winter is improved.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a modularized defrosting device for an outdoor heat exchanger of a household central air conditioner.
Background
Domestic central air conditioners are increasingly used in civil buildings. When the unit is used for heating in winter, the frosting phenomenon can occur on the outdoor heat exchange side under the condition of low outdoor temperature. Along with the accumulation of heating running time, the frost layer on the outdoor heat exchange side of the unit becomes thicker gradually, and the heat exchange condition becomes worse, so that the heating effect of the unit is influenced. At this point, the unit must be defrosted.
There are data showing that the conventional defrosting modes can be divided into two categories: one is that a reverse circulation defrosting mode is adopted, at the moment, the unit is switched from a heating operation mode to a refrigerating operation mode, high-temperature and high-pressure gas discharged by a compressor flows to an outdoor heat exchange side attached with a frost layer, and the optimal defrosting time is realized by optimizing a defrosting control logic; the other is to add auxiliary devices, for example, a purging device, a hot water spraying device and an electric heating device are arranged on the outdoor heat exchange side, and a heat storage and release system of a phase change material is utilized, so that the unit is prevented from frosting. However, the two types of methods have the disadvantages that: the first defrosting mode has the phenomenon of absorbing heat indoors, and the phenomenon can be prolonged along with the increase of defrosting time, so that the indoor comfort is reduced; the auxiliary device additionally arranged in the second defrosting mode is complex, and the manufacturing cost is greatly increased.
Chinese patent document CN2376603Y discloses a "quick defrosting air conditioner". The electric heating device is installed on the thermodynamic circulation air suction loop from the evaporator to the compressor through the reversing valve and the liquid storage barrel, and consists of an electric heating element, an insulating sleeve and a cable. The technical scheme is difficult to realize the effective heating in the indoor maintaining process.
Disclosure of Invention
The utility model mainly solves the technical problem that the indoor heating is influenced in the defrosting process by the original technical scheme, and provides a modular defrosting device for an outdoor heat exchanger of a household central air-conditioning unit.
The technical problem of the utility model is mainly solved by the following technical scheme: the utility model comprises a compressor, wherein the compressor is respectively connected with a four-way valve and a gas-liquid separator, the four-way valve is respectively connected with an indoor heat exchanger, an outdoor heat exchanger and the gas-liquid separator, and the indoor heat exchanger is connected with the outdoor heat exchanger through an expansion valve and an electric valve. The compressor discharges high-temperature and high-pressure gaseous refrigerant, the four-way valve controls the circulation of the high-temperature and high-pressure gaseous refrigerant and other gases, the indoor heat exchanger and the outdoor heat exchanger respectively realize indoor and outdoor heat exchange, the gas-liquid separator performs gas-liquid separation, the expansion valve controls the flow rate, and the electric valve controls the flow in the pipeline.
Preferably, the outdoor heat exchanger comprises a first outdoor heat exchanger and a second outdoor heat exchanger, and the first outdoor heat exchanger and the second outdoor heat exchanger are connected in parallel and are simultaneously connected with the four-way valve. When the household central air-conditioning unit is in the defrosting mode, the first outdoor heat exchanger and the second outdoor heat exchanger work in the heat absorption mode and the defrosting mode respectively, and the indoor thermal comfort is kept while defrosting is achieved.
Preferably, the electrically operated valves include a first electrically operated valve, a second electrically operated valve, a third electrically operated valve and a fourth electrically operated valve, the first electrically operated valve and the second electrically operated valve being connected in parallel, and the third electrically operated valve and the fourth electrically operated valve being connected in parallel.
Preferably, one end of the first electric valve is connected with the first outdoor heat exchanger, and the other end of the first electric valve is connected with the expansion valve; one end of the second electric valve is connected with the second outdoor heat exchanger, and the other end of the second electric valve is connected with the expansion valve; one end of the third electric valve is connected with the second outdoor heat exchanger, and the other end of the third electric valve is connected with the four-way valve; and one end of the fourth electric valve is connected with the first outdoor heat exchanger, and the other end of the fourth electric valve is connected with the four-way valve.
Preferably, the system further comprises a control module, and the control module is respectively connected with the compressor, the four-way valve, the indoor heat exchanger, the outdoor heat exchanger and the electric valve. The control module comprises a temperature detection module, realizes temperature monitoring of the first outdoor heat exchanger and the second outdoor heat exchanger, controls the flowing direction of gas in the pipeline through controlling the four-way valve and the electric valve, and realizes a working mode through controlling the compressor, the indoor heat exchanger and the outdoor heat exchanger.
Preferably, the control module is connected with the control terminal through a wireless communication module. The control terminal comprises a receiving device, a remote controller and other handheld devices and is used for displaying the air conditioner state and issuing a control command.
The utility model has the beneficial effects that: the outdoor heat exchange side of the household central air-conditioning unit is modularized, heat absorption and defrosting are respectively realized through the modular double-chamber external heat exchangers, two refrigerants are respectively mixed after heat exchange in the modular double-chamber external heat exchangers, then flow through the four-way valve and the gas-liquid separator and finally return to the compressor, and then the states of the modular double-chamber external heat exchangers are exchanged, so that the running process of simultaneously heating and defrosting of the unit is realized, and the indoor thermal comfort during running of the unit in winter is improved.
Drawings
FIG. 1 is a schematic diagram of the operation of a cooling mode of the present invention.
Fig. 2 is a schematic diagram of the heating mode operation of the present invention.
Fig. 3 is a schematic diagram of a defrost mode operation of the present invention.
In the figure, a compressor 1, a four-way valve 2, an indoor heat exchanger 3, an expansion valve 4, a first outdoor heat exchanger 5, a second outdoor heat exchanger 6, a first electric valve 7, a second electric valve 8, a gas-liquid separator 9, a third electric valve 10 and a fourth electric valve 11 are arranged.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
Example (b): the outdoor heat exchanger modularized defrosting device of the household central air conditioner of the embodiment comprises a compressor 1, wherein the compressor 1 is respectively connected with a four-way valve 2 and a gas-liquid separator 9, the four-way valve 2 is respectively connected with an indoor heat exchanger 3, an outdoor heat exchanger and the gas-liquid separator 9, and the indoor heat exchanger 3 is connected with the outdoor heat exchanger through an expansion valve 4 and an electric valve. The compressor discharges high-temperature and high-pressure gaseous refrigerant, the four-way valve controls the circulation of the high-temperature and high-pressure gaseous refrigerant and other gases, the indoor heat exchanger and the outdoor heat exchanger respectively realize indoor and outdoor heat exchange, the gas-liquid separator performs gas-liquid separation, the expansion valve controls the flow rate, and the electric valve controls the flow in the pipeline. The outdoor heat exchanger comprises a first outdoor heat exchanger 5 and a second outdoor heat exchanger 6, and the first outdoor heat exchanger 5 and the second outdoor heat exchanger 6 are connected in parallel and are connected with the four-way valve 2. When the household central air-conditioning unit is in the defrosting mode, the first outdoor heat exchanger and the second outdoor heat exchanger work in the heat absorption mode and the defrosting mode respectively, and the indoor thermal comfort is kept while defrosting is achieved.
The system also comprises a control module, wherein the control module is respectively connected with the compressor 1, the four-way valve 2, the indoor heat exchanger 3, the outdoor heat exchanger and the electric valve. The control module comprises a temperature detection module, and the temperature of the first outdoor heat exchanger and the temperature of the second outdoor heat exchanger are monitored. The control module controls the flowing direction of gas in the pipeline by controlling the four-way valve and the electric valve, and the control module realizes the working mode by controlling the compressor, the indoor heat exchanger and the outdoor heat exchanger. The control module is connected with the control terminal through the wireless communication module. The control terminal comprises a receiving device, a remote controller and other handheld devices and is used for displaying the air conditioner state and issuing a control command.
The electric valves comprise a first electric valve 7, a second electric valve 8, a third electric valve 10 and a fourth electric valve 11, wherein the first electric valve 7 is connected with the second electric valve 8 in parallel, and the third electric valve 10 is connected with the fourth electric valve 11 in parallel. One end of the first electric valve 7 is connected with the first outdoor heat exchanger 5, and the other end is connected with the expansion valve 4; one end of the second electric valve 8 is connected with the second outdoor heat exchanger 6, and the other end is connected with the expansion valve 4; one end of the third electric valve 10 is connected with the second outdoor heat exchanger 6, and the other end is connected with the four-way valve 2; one end of the fourth electric valve 11 is connected with the first outdoor heat exchanger 5, and the other end is connected with the four-way valve 2.
When the household central air conditioning unit works, when the household central air conditioning unit is in a refrigeration mode, high-temperature high-pressure gaseous refrigerant discharged by the compressor 1 flows through the four-way valve 2 and then is cooled in the first outdoor heat exchanger 5 and the second outdoor heat exchanger 6 respectively, the cooled high-pressure medium-temperature refrigerant correspondingly flows through the first electric valve 7, the second electric valve 8 and the expansion valve 4 and then is decompressed into low-temperature low-pressure refrigerant, absorbs heat in the indoor heat exchanger 3, then flows through the four-way valve 2 and the gas-liquid separator 9, and finally returns to the compressor 1, as shown in fig. 1. In the cooling mode, the first motor-operated valve 7 and the second motor-operated valve 8 are opened, and the third motor-operated valve 10 and the fourth motor-operated valve 11 are closed.
When the household central air conditioning unit is in a heating mode, high-temperature high-pressure gaseous refrigerant discharged by the compressor 1 flows through the four-way valve 2 and then radiates heat indoors in the indoor heat exchanger 3, the high-pressure medium-temperature refrigerant after radiation flows through the expansion valve 4 and then flows through the first electric valve 7 and the second electric valve 8 respectively, then is decompressed into low-temperature low-pressure refrigerant, absorbs heat correspondingly in the outer first outdoor heat exchanger 5 and the second outdoor heat exchanger 6, then flows through the four-way valve 2 and the gas-liquid separator 9, and finally returns to the compressor 1, as shown in fig. 2. In the heating mode, the first electric valve 7 and the second electric valve 8 are opened, and the third electric valve 10 and the fourth electric valve 11 are closed.
When the household central air-conditioning unit is in the defrosting mode, taking the second outdoor heat exchanger 6 absorbing heat and the first outdoor heat exchanger 5 defrosting as an example, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 1 is divided into two paths after flowing through the four-way valve 2: one path of the refrigerant flows into the indoor heat exchanger 3 to dissipate heat indoors, and the high-pressure medium-temperature refrigerant after heat dissipation flows through the expansion valve 4 and the second electric valve 8 to be decompressed into low-temperature low-pressure refrigerant and absorbs heat in the second outdoor heat exchanger 6; the other path passes through the fourth electric valve 11 and then is defrosted in the first outdoor heat exchanger 5. The two paths of refrigerants are respectively mixed after heat exchange in the first outdoor heat exchanger 5 and the second outdoor heat exchanger 6, then flow through the four-way valve 2 and the gas-liquid separator 9, and finally return to the compressor 1, as shown in fig. 3. In this defrosting mode, the second motor-operated valve 8 and the fourth motor-operated valve 11 are opened, and the first motor-operated valve 7 and the third motor-operated valve 10 are closed. The monitoring module monitors the surface temperature T6 of the second outdoor heat exchanger 6, when the defrosting state is reached, the second electric valve 8 and the fourth electric valve 11 are closed, the first electric valve 7 and the third electric valve 10 are opened, the running states of the second outdoor heat exchanger 6 and the first outdoor heat exchanger 5 are exchanged, namely the second outdoor heat exchanger 6 is defrosted, and the first outdoor heat exchanger 5 absorbs heat, so that the running process of the household central air-conditioning unit for heating and defrosting simultaneously is realized.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Although the terms four-way valve, electrically operated valve, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (6)
1. The utility model provides a domestic central air conditioning outdoor heat exchanger modularization defroster which characterized in that, includes compressor (1), compressor (1) links to each other with cross valve (2), vapour and liquid separator (9) respectively, cross valve (2) link to each other with indoor heat exchanger (3), outdoor heat exchanger, vapour and liquid separator (9) respectively, indoor heat exchanger (3) link to each other with outdoor heat exchanger through expansion valve (4) and motorised valve.
2. The outdoor heat exchanger modular defrosting device of a household central air conditioner according to claim 1, characterized in that the outdoor heat exchanger comprises a first outdoor heat exchanger (5) and a second outdoor heat exchanger (6), and the first outdoor heat exchanger (5) and the second outdoor heat exchanger (6) are connected in parallel and are connected with a four-way valve (2).
3. The modular defrosting device of the outdoor heat exchanger of a central air conditioner for home use according to claim 2, characterized in that the electric valves comprise a first electric valve (7), a second electric valve (8), a third electric valve (10) and a fourth electric valve (11), the first electric valve (7) is connected in parallel with the second electric valve (8), and the third electric valve (10) is connected in parallel with the fourth electric valve (11).
4. The modular defrosting device of the outdoor heat exchanger of the household central air conditioner according to the claim 3, characterized in that the first electric valve (7) is connected with the first outdoor heat exchanger (5) at one end and the expansion valve (4) at the other end; one end of the second electric valve (8) is connected with the second outdoor heat exchanger (6), and the other end of the second electric valve is connected with the expansion valve (4); one end of the third electric valve (10) is connected with the second outdoor heat exchanger (6), and the other end of the third electric valve is connected with the four-way valve (2); one end of the fourth electric valve (11) is connected with the first outdoor heat exchanger (5), and the other end of the fourth electric valve is connected with the four-way valve (2).
5. The modular defrosting device of the outdoor heat exchanger of the household central air conditioner as claimed in claim 1, further comprising a control module, wherein the control module is respectively connected with the compressor (1), the four-way valve (2), the indoor heat exchanger (3), the outdoor heat exchanger and the electric valve.
6. The modular defrosting apparatus of the outdoor heat exchanger of the household central air conditioner of claim 5 wherein the control module is connected with the control terminal through a wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121557871.5U CN215765644U (en) | 2021-07-09 | 2021-07-09 | Outdoor heat exchanger modularization defroster of domestic central air conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121557871.5U CN215765644U (en) | 2021-07-09 | 2021-07-09 | Outdoor heat exchanger modularization defroster of domestic central air conditioning |
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| Publication Number | Publication Date |
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| CN215765644U true CN215765644U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121557871.5U Expired - Fee Related CN215765644U (en) | 2021-07-09 | 2021-07-09 | Outdoor heat exchanger modularization defroster of domestic central air conditioning |
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| CN (1) | CN215765644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
-
2021
- 2021-07-09 CN CN202121557871.5U patent/CN215765644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220208 |