CN109959120B - Defrosting method of air conditioner and air conditioner - Google Patents
Defrosting method of air conditioner and air conditioner Download PDFInfo
- Publication number
- CN109959120B CN109959120B CN201910219565.1A CN201910219565A CN109959120B CN 109959120 B CN109959120 B CN 109959120B CN 201910219565 A CN201910219565 A CN 201910219565A CN 109959120 B CN109959120 B CN 109959120B
- Authority
- CN
- China
- Prior art keywords
- defrosting
- air conditioner
- heat exchanger
- defrosting mode
- indoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting method of an air conditioner and the air conditioner, wherein the air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage, and the defrosting method comprises the following steps: when the air conditioner meets a first defrosting condition, the air conditioner enters a first defrosting mode, and the opening degree of the throttling device reaches the maximum in the first defrosting mode. The defrosting method of the air conditioner and the air conditioner improve the defrosting effect, avoid the large fluctuation of the indoor environment temperature and reduce the reversing fault.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a defrosting method of an air conditioner and the air conditioner.
Background
An air conditioner, which is a device capable of adjusting an indoor ambient temperature, generally has an operation mode including a heating operation and a cooling operation.
When the air conditioner heats the operation, if outdoor coil pipe temperature under certain humidity condition crosses lowly can lead to the condition of frosting, and outdoor coil pipe frosting can lead to outdoor heat exchanger's heat exchange efficiency to reduce, influences the heating effect of air conditioner, reduces indoor environment's travelling comfort, influences user experience. Therefore, in a case where the air conditioner is in a heating operation, it is required to defrost an outdoor coil of the air conditioner timely and effectively.
However, the existing defrosting solutions still have the following technical drawbacks:
1. the existing reverse defrosting mode has long defrosting time and much energy consumption, is easy to cause great fluctuation of indoor environment temperature, and has poor use comfort for users;
2. the existing hot gas bypass defrosting mode has poor defrosting capability, and the effective use environment of the existing hot gas bypass defrosting mode is greatly limited, for example, defrosting below 0 ℃ is incomplete, so that the heating effect is influenced.
3. The conventional hot gas bypass defrosting mode cannot be switched to reverse defrosting under the condition of defrosting completion, so that the comfort and the reliability of an air conditioner are affected.
Disclosure of Invention
In view of this, the present invention is directed to a defrosting method for an air conditioner and an air conditioner, so as to improve a defrosting effect, prevent a temperature of an indoor environment from fluctuating greatly, and reduce a commutation failure.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a defrosting method of an air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, wherein the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage, and the defrosting method comprises the following steps:
when the air conditioner meets a first defrosting condition, the air conditioner enters a first defrosting mode, and the opening degree of the throttling device reaches the maximum in the first defrosting mode.
Further, the air conditioner further includes a two-way valve connected in parallel to the indoor heat exchanger, and the defrosting method further includes:
and when the air conditioner meets a second defrosting condition, the air conditioner enters a second defrosting mode, and the two-way valve is opened in the second defrosting mode.
Further, the first defrosting mode is a heat accumulation defrosting mode, and the second defrosting mode is a hot gas bypass defrosting mode.
Further, before the opening degree of the throttling device reaches the maximum, heat accumulation is further included.
Further, when heat is stored, the indoor heat exchanger is stopped to exchange heat with the indoor space, the two-way valve is closed, refrigerant discharged by the compressor enters the indoor heat exchanger, and the indoor heat exchanger stores heat.
Further, the first defrosting condition is that the outdoor coil temperature is less than a first outdoor coil temperature threshold.
Further, the second defrosting condition is that the outdoor coil temperature is less than a second outdoor coil temperature threshold, and the indoor coil temperature is less than an indoor coil temperature threshold.
An air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, wherein the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage; the air conditioner also comprises a two-way valve which is connected with the indoor heat exchanger in parallel.
Further, the throttling device is an abrupt change expansion valve, and the two-way valve is a one-way two-way valve.
Further, the maximum opening degree of the abrupt expansion valve is within the range of 5mm to 7mm, and the time required for the abrupt expansion valve to reach the maximum opening degree from a fully closed state is within the range of 4s to 7 s.
Compared with the prior art, the defrosting method of the air conditioner and the air conditioner have the following advantages:
(1) the invention utilizes the throttling device (such as an abrupt change expansion valve, also called an abrupt change large-caliber electronic expansion valve) to adjust the opening degree of the abrupt change expansion valve (the opening degree is the maximum opening degree when the heat storage defrosting is carried out) according to the running state, thereby effectively improving the defrosting capacity of the air conditioner and improving the defrosting effect.
(2) According to the invention, the one-way two-way valve is additionally arranged between the air pipe and the liquid pipe of the indoor heat exchanger, so that the heat storage defrosting of the indoor heat exchanger is preferentially used, and under the condition of insufficient heat storage defrosting capacity, the one-way two-way valve is opened, and the defrosting is carried out by bypassing hot gas, so that the defrosting capacity is greatly improved, and the application range of hot gas defrosting is expanded.
(3) The one-way two-way valve is connected with the indoor heat exchanger in parallel, and the indoor heat exchanger has heat to pass through, so that the temperature of the indoor heat exchanger is stabilized at a higher level.
(4) Compared with reverse defrosting, the hot gas bypass defrosting mode greatly shortens the time and realizes energy conservation.
(5) The invention reduces the reversing of the four-way valve under the condition of large pressure difference, thereby reducing the reversing fault and improving the quality of the air conditioner.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a flow chart of a defrosting method of an air conditioner according to an embodiment of the present invention.
< description of symbols >
1-indoor heat exchanger, 2-outdoor heat exchanger, 3-compressor, 4-four-way valve, 5-sudden change expansion valve, 6-one-way two-way valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention provides a defrosting method of an air conditioner, wherein the air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage, and the defrosting method comprises the following steps: when the air conditioner meets a first defrosting condition, the air conditioner enters a first defrosting mode, and the opening degree of the throttling device reaches the maximum in the first defrosting mode. The first defrosting mode may be a thermal storage defrosting mode, and correspondingly, the first defrosting condition may be that the outdoor coil temperature is less than a first outdoor coil temperature threshold.
The defrosting method utilizes the throttling device (such as an abrupt change expansion valve, also called an abrupt change large-caliber electronic expansion valve) to adjust the opening degree of the abrupt change expansion valve (the opening degree is the maximum opening degree during heat storage defrosting) according to the running state, thereby effectively improving the defrosting capacity of the air conditioner.
Preferably, the air conditioner may further include a two-way valve connected in parallel with the indoor heat exchanger, and the defrosting method further includes: and when the air conditioner meets a second defrosting condition, the air conditioner enters a second defrosting mode, and the two-way valve is opened in the second defrosting mode. The second defrost mode may be a hot gas bypass defrost mode, and correspondingly, the second defrost condition may be that the outdoor coil temperature is less than a second outdoor coil temperature threshold, and the indoor coil temperature is less than an indoor coil temperature threshold.
Through increasing one-way two-way valve between indoor heat exchanger's trachea and liquid pipe, preferentially use indoor heat exchanger's heat accumulation defrosting, under the not enough condition of heat accumulation defrosting ability, open one-way two-way valve utilizes the defrosting of steam bypass, has promoted the defrosting ability by a wide margin, has enlarged the application range of steam defrosting. In addition, because the one-way two-way valve is connected with the indoor heat exchanger in parallel, the temperature of the indoor heat exchanger can be stabilized at a higher level by heat passing through the indoor heat exchanger, therefore, after the defrosting mode is finished, the time for blowing out hot air is greatly shortened, the large fluctuation of the indoor environment temperature during the defrosting period can be avoided, and the comfort of users is improved.
In addition, the defrosting method of the air conditioner further comprises the step of storing heat before the opening degree of the throttling device reaches the maximum, the indoor heat exchanger stops heat exchange with the indoor space during heat storage, the two-way valve is closed, the compressor discharges the refrigerant to enter the indoor heat exchanger, and the indoor heat exchanger stores heat.
The invention also provides an air conditioner, which comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, wherein the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage; the air conditioner also comprises a two-way valve which is connected with the indoor heat exchanger in parallel.
Specifically, the throttling device is an abrupt change expansion valve, and the two-way valve is a one-way two-way valve. More specifically, the maximum opening degree of the abrupt expansion valve is in the range of 5mm to 7mm, and the time required for the abrupt expansion valve to reach the maximum opening degree from a fully closed state is in the range of 4s to 7 s.
In one embodiment, as shown in fig. 1, the air conditioner includes: an indoor heat exchanger 1 (specifically an evaporator), an outdoor heat exchanger 2 (specifically a condenser), a compressor 3, a four-way valve 4, a sudden change expansion valve 5 (specifically a sudden change large-diameter electronic expansion valve) and a one-way two-way valve 6; the first end of the indoor heat exchanger is connected with a first interface of the four-way valve; a first interface of the sudden change expansion valve is connected with a second end of the indoor heat exchanger; the first end of the outdoor heat exchanger is connected with the second interface of the sudden change expansion valve, and the second end of the outdoor heat exchanger is connected with the second interface of the four-way valve; the input end and the output end of the compressor are respectively connected with a third interface and a fourth interface of the four-way valve; and the one-way two-way valve is connected with the indoor heat exchanger in parallel.
In this embodiment, the maximum opening degree of the abrupt change large-diameter expansion valve is 6mm, and the time required for opening the abrupt change large-diameter expansion valve from 0mm to 6mm is 6 s. Compared with the existing expansion valve, the maximum opening degree of the sudden-change expansion valve is greatly increased, the time for opening to the maximum opening degree is obviously shortened, no throttling effect is basically realized when the sudden-change expansion valve is applied to the pipe diameter of 7mm, and the defrosting effect is further improved.
The operation modes of the air conditioner include a heating mode, a first defrosting mode (heat accumulation defrosting mode), and a second defrosting mode (hot gas bypass defrosting mode).
In the heating mode, an inner fan of the air conditioner operates, the one-way two-way valve is closed, the sudden change expansion valve is adjusted to be opened to a proper opening degree (smaller than the maximum opening degree), and high-temperature and high-pressure refrigerant discharged by the compressor enters the indoor heat exchanger to exchange heat with indoor air, so that the indoor environment temperature is increased.
In the heat storage defrosting mode, an inner fan of the air conditioner stops (stops heat exchange between an indoor heat exchanger and indoor air), the one-way two-way valve is closed, high-temperature and high-pressure refrigerant discharged by the compressor enters the indoor heat exchanger, the indoor heat exchanger stores heat, the sudden change expansion valve is adjusted to be opened to the maximum opening degree after the temperature is raised to 55 ℃ through heat storage, the refrigerant enters the outdoor heat exchanger through the sudden change expansion valve, and the outdoor coil pipe is defrosted by utilizing the heat storage capacity of the refrigerant.
In the hot gas bypass defrosting mode, the one-way two-way valve is opened, the high-temperature and high-pressure refrigerant discharged by the compressor enters the outdoor heat exchanger through the one-way two-way valve, and about 90% of heat is used for defrosting the outdoor coil pipe through the one-way two-way valve. Because the one-way two-way valve is connected with the indoor heat exchanger in parallel, the temperature of the indoor heat exchanger can be stabilized at a higher level due to the heat passing through the indoor heat exchanger, the time for blowing out hot air is greatly shortened after the defrosting mode is finished, the large fluctuation of the indoor environment temperature can be avoided, and the comfort of users is improved.
In still another embodiment, as shown in fig. 2, a defrosting method of an air conditioner includes:
whether a first defrosting condition is met is determined, namely whether defrosting is needed or not is judged, and whether defrosting is needed or not can be judged according to the temperature of the outdoor coil pipe; the first defrosting condition is that the temperature of the outdoor coil is less than 0 ℃, correspondingly, if the temperature of the outdoor coil is less than 0 ℃, defrosting is required; of course, the method for determining whether defrosting is needed is not limited to this;
if the first defrosting condition is met, the inverter air conditioner enters the first defrosting mode: controlling the indoor heat exchanger to store heat, stopping the inner fan, closing the one-way two-way valve, adjusting the sudden change expansion valve to be opened to the maximum opening (equivalent to the pipe diameter of phi 6) after the heat storage temperature of the indoor heat exchanger is increased to 55 ℃, performing heat storage and defrosting, and stopping the outer fan;
determining whether a second defrosting condition is met, namely judging whether the heat storage defrosting capacity is insufficient, specifically judging the defrosting condition according to the temperature of the outdoor coil and judging the heat storage condition according to the temperature of the indoor coil; the second defrosting condition is, for example, that the outdoor coil temperature is less than 0 ℃ (if less than 0 ℃, indicating that more frost is currently formed), and the indoor coil temperature is less than 30 ℃ (if less than 30 ℃, indicating that less heat is currently stored), and correspondingly, if the outdoor coil temperature is less than 0 ℃, and the indoor coil temperature is less than 30 ℃, indicating that the heat storage defrosting capability is insufficient; of course, the method of determining whether the heat storage defrosting capacity is insufficient is not limited to this;
if a second defrosting condition is met and the heat storage defrosting capacity is insufficient, the variable frequency air conditioner enters a second defrosting mode: and controlling the one-way two-way valve to be opened to perform hot gas bypass defrosting.
The defrosting condition can be judged through the outdoor coil pipe, namely the current frosting condition of the outdoor coil pipe after the outdoor coil pipe operates for a certain time in the first defrosting mode, and if the frosting condition is less, the outdoor coil pipe can exit the defrosting mode; if the frosting is more, the heat storage condition can be further judged through the indoor coil pipe, if the heat storage is more, the first defrosting mode can be continuously operated, and if the frosting is not more, the second defrosting mode is operated; after defrosting is finished, the defrosting mode is quitted, the sudden change expansion valve is adjusted to be opened to a proper opening degree (smaller than the maximum opening degree), the outer fan operates, the indoor unit stores heat, and the inner fan operates.
The invention utilizes the heat storage capacity to defrost, and the defrosting capacity is improved compared with the common hot gas bypass defrosting capacity; when the heat storage defrosting capacity is insufficient, hot gas bypass defrosting is adopted, and the defrosting capacity is close to a reverse defrosting mode, so that hot gas bypass defrosting can be realized in a low-temperature environment.
In addition, the present invention may adopt the existing determination method for determining whether defrosting is required, determining whether the heat storage defrosting capacity is insufficient, and the like, and is not limited to the specific determination method disclosed in the embodiments.
The present invention has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly understand the defrosting method of the air conditioner and the air conditioner of the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A defrosting method of an air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, wherein the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage; the air conditioner also comprises a two-way valve which is connected with the indoor heat exchanger in parallel; the defrosting method is characterized by comprising the following steps:
when the air conditioner meets a first defrosting condition, the air conditioner enters a first defrosting mode, the opening degree of the throttling device reaches the maximum in the first defrosting mode, and the two-way valve is closed;
the defrosting method further includes:
when the air conditioner meets a second defrosting condition, the air conditioner enters a second defrosting mode, and the two-way valve is opened in the second defrosting mode;
the first defrosting condition is that the temperature of the outdoor coil is smaller than a first outdoor coil temperature threshold value;
the second defrosting condition is that the temperature of the outdoor coil is smaller than a second outdoor coil temperature threshold value, and the temperature of the indoor coil is smaller than an indoor coil temperature threshold value;
the first defrosting mode is a heat accumulation defrosting mode, and the second defrosting mode is a hot gas bypass defrosting mode.
2. The defrosting method according to claim 1, further comprising storing heat before the throttle opening reaches the maximum, and during the storing heat, the indoor heat exchanger is stopped from exchanging heat with the indoor space, the two-way valve is closed, the compressor discharges the refrigerant into the indoor heat exchanger, and the indoor heat exchanger stores heat.
3. The air conditioner is characterized by comprising a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger, wherein the compressor, the indoor heat exchanger, the throttling device and the outdoor heat exchanger are sequentially connected through pipelines to form a circulation passage; the air conditioner also comprises a two-way valve which is connected with the indoor heat exchanger in parallel; the air conditioner has a first defrosting mode and a second defrosting mode;
when the air conditioner meets a first defrosting condition, the air conditioner enters a first defrosting mode, the opening degree of the throttling device reaches the maximum in the first defrosting mode, and the two-way valve is closed;
when the air conditioner meets a second defrosting condition, the air conditioner enters a second defrosting mode, and the two-way valve is opened in the second defrosting mode;
the first defrosting condition is that the temperature of the outdoor coil is smaller than a first outdoor coil temperature threshold value;
the second defrosting condition is that the temperature of the outdoor coil is smaller than a second outdoor coil temperature threshold value, and the temperature of the indoor coil is smaller than an indoor coil temperature threshold value;
the first defrosting mode is a heat accumulation defrosting mode, and the second defrosting mode is a hot gas bypass defrosting mode.
4. The air conditioner as claimed in claim 3, wherein the throttling means is an abrupt expansion valve, and the two-way valve is a one-way two-way valve.
5. The air conditioner according to claim 4, wherein the maximum opening degree of the abrupt expansion valve is in the range of 5mm to 7mm, and a time required for the abrupt expansion valve to reach the maximum opening degree from a fully closed state is in the range of 4s to 7 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910219565.1A CN109959120B (en) | 2019-03-21 | 2019-03-21 | Defrosting method of air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910219565.1A CN109959120B (en) | 2019-03-21 | 2019-03-21 | Defrosting method of air conditioner and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109959120A CN109959120A (en) | 2019-07-02 |
| CN109959120B true CN109959120B (en) | 2021-03-19 |
Family
ID=67024775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910219565.1A Active CN109959120B (en) | 2019-03-21 | 2019-03-21 | Defrosting method of air conditioner and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109959120B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173818A (en) * | 2019-07-11 | 2019-08-27 | 芜湖美智空调设备有限公司 | Air conditioner and its control method, control device and computer readable storage medium |
| CN110332651B (en) * | 2019-07-25 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device and air conditioner |
| CN110567183B (en) * | 2019-09-16 | 2021-03-09 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method thereof |
| CN110736203B (en) * | 2019-09-25 | 2021-11-23 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110940055B (en) * | 2019-12-16 | 2021-10-22 | 宁波奥克斯电气股份有限公司 | Heating and defrosting control method and device for air conditioner and air conditioner |
| CN114061113A (en) * | 2020-07-31 | 2022-02-18 | 青岛海尔空调器有限总公司 | Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner |
| CN114061120A (en) * | 2020-07-31 | 2022-02-18 | 青岛海尔空调器有限总公司 | Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner |
| CN112984708A (en) * | 2021-03-03 | 2021-06-18 | 广东Tcl智能暖通设备有限公司 | Air conditioner defrosting method, air conditioner control method and air conditioner |
| CN115342482A (en) * | 2022-08-23 | 2022-11-15 | 宁波奥克斯电气股份有限公司 | Defrosting control method and air conditioner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250833A (en) * | 1996-03-15 | 1997-09-22 | Toshiba Corp | Air conditioner |
| JPH09318229A (en) * | 1996-05-24 | 1997-12-12 | Mitsubishi Heavy Ind Ltd | Refrigerating device |
| CN102523753A (en) * | 2010-09-08 | 2012-06-27 | 松下电器产业株式会社 | Refrigeration cycle apparatus |
| CN102062504A (en) * | 2010-12-24 | 2011-05-18 | 中国扬子集团滁州扬子空调器有限公司 | Split type heat pump frequency conversion air conditioner which is defrosting nonstop machine and defrosting control method |
| CN102116549B (en) * | 2011-03-15 | 2012-10-10 | 宁波奥克斯电气有限公司 | Method for defrosting of direct current variable frequency heat pump air conditioner |
| CN103162461B (en) * | 2011-12-13 | 2016-02-03 | 珠海格力电器股份有限公司 | Air-conditioner and the defrosting control method being applied to this air-conditioner |
-
2019
- 2019-03-21 CN CN201910219565.1A patent/CN109959120B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109959120A (en) | 2019-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109959120B (en) | Defrosting method of air conditioner and air conditioner | |
| CN107289578B (en) | Air conditioner and defrosting control method thereof | |
| CN109869954B (en) | Air source heat pump water heater and defrosting method thereof | |
| CN102032649A (en) | Defrosting control method for air-conditioning system | |
| CN103363707B (en) | Heat pump type air adjusting device | |
| WO2022267886A1 (en) | Anti-frost control method for air conditioner and air conditioner | |
| CN202546973U (en) | Heat pump type air conditioning device | |
| CN210801680U (en) | Cold and warm dual-purpose air source heat pump system | |
| CN214199278U (en) | Air source heat pump unit with fluorine pump defrosting function | |
| JP4303062B2 (en) | refrigerator | |
| JP4830399B2 (en) | Air conditioner | |
| JP4622901B2 (en) | Air conditioner | |
| CN110940136B (en) | Refrigerator refrigerating system and defrosting control method thereof | |
| CN114413416B (en) | Defrosting control method for multi-split air conditioner, storage medium and multi-split air conditioner | |
| JP4802602B2 (en) | Air conditioner | |
| CN107401851B (en) | Air conditioner system and control method for defrosting without stopping air conditioner system | |
| CN202546972U (en) | Heat pump type air conditioning device | |
| CN107023917B (en) | Air conditioner and refrigerator integrated machine and operation control method thereof | |
| CN114322220B (en) | Air conditioning device and control method thereof | |
| JP2003287311A (en) | Air-conditioner, and air-conditioner control method | |
| CN110701747B (en) | Control method of air conditioning system | |
| CN111219818B (en) | Air conditioning system, air conditioner and control method of air conditioner | |
| CN112856718A (en) | Air conditioner, control method thereof and storage medium | |
| CN202613831U (en) | Heat pump type air conditioning device | |
| CN111578450A (en) | Air conditioning system and defrosting method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |