CN107781946B - Heating control method of variable frequency air conditioner - Google Patents
Heating control method of variable frequency air conditioner Download PDFInfo
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- CN107781946B CN107781946B CN201710840433.1A CN201710840433A CN107781946B CN 107781946 B CN107781946 B CN 107781946B CN 201710840433 A CN201710840433 A CN 201710840433A CN 107781946 B CN107781946 B CN 107781946B
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a heating control method of a variable frequency air conditioner, an indoor unit of the air conditioner comprises two evaporators arranged in parallel, two fans respectively corresponding to the two evaporators and two air outlet groups respectively corresponding to the two fans, each air outlet group comprises at least one air outlet, and the heating control method comprises the following steps: when the air conditioner operates in a heating mode, detecting an indoor target temperature Ta, an indoor environment temperature Tb, an outdoor environment temperature Tc and coil temperatures of two evaporators, wherein the higher temperature value of the two coil temperatures is Td; detecting the opening states of the two fans; if the two fans are started, determining the operating frequency of the compressor according to the temperature range of the Td and the values of Ta, Tb and Tc; and if only one fan is started, determining the operating frequency of the compressor according to the temperature difference range of Ta-Tb and the values of Ta, Tb and Tc. The invention accurately controls the operation frequency of the compressor, so that the air conditioner can meet the heating requirement and prevent the refrigerant circulating system from overload operation.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a heating control method of a variable frequency air conditioner.
Background
The inverter air conditioner usually calculates the real-time operating frequency of the compressor according to the indoor target temperature, the indoor ambient temperature and the outdoor ambient temperature set by the remote controller. However, some indoor units of the existing air conditioners are provided with two evaporators and two fans which are connected in parallel so as to realize air supply in multiple modes. It is therefore often the case that only one fan is switched on.
When heating, the evaporator corresponding to the unopened fan can lead to higher temperature of the coil pipe, overlarge pressure of the refrigerant and overlarge power of the compressor due to no fan for blowing and heat dissipation, so that the air conditioner can run in overload. Therefore, how to accurately control the operating frequency of the compressor makes the air conditioner meet the heating requirement and avoid overload of the refrigerant circulating system, which becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a heating control method of an inverter air conditioner, which realizes the accurate control of the operating frequency of a compressor, so that the air conditioner can meet the heating requirement and avoid the overload operation of a refrigerant circulating system.
The invention further aims to improve the intellectualization of air supply of the air conditioner, realize air supply and soft air supply according to requirements and enhance the comfort of users.
Particularly, the invention provides a heating control method of a variable frequency air conditioner, an indoor unit of the air conditioner comprises two evaporators arranged in parallel and two fans respectively corresponding to the two evaporators, each fan corresponds to at least one air outlet, and the heating control method comprises the following steps:
when the air conditioner operates in a heating mode, detecting an indoor target temperature Ta, an indoor environment temperature Tb, an outdoor environment temperature Tc and coil temperatures of two evaporators, wherein the higher temperature value of the two coil temperatures is Td;
detecting the opening states of the two fans;
if the two fans are started, determining the operating frequency of the compressor according to the temperature range of the Td and the values of Ta, Tb and Tc;
and if only one fan is started, determining the operating frequency of the compressor according to the temperature difference range of Ta-Tb and the values of Ta, Tb and Tc.
Optionally, when both fans are on, the operating frequency of the compressor is determined as follows: when Td is less than T1, controlling the compressor to operate in a variable frequency mode, wherein the frequency f is f (Ta, Tb and Tc); when Td is more than or equal to T1 and less than or equal to T2, controlling the compressor to operate at a fixed frequency, wherein the frequency f is f (Ta1, Tb1 and Tc1), and Ta1, Tb1 and Tc1 are respectively the indoor target temperature, the indoor environment temperature and the outdoor environment temperature when Td just reaches T1; when Td is more than T2, the compressor is controlled to run down to make its frequency f < f (Ta1, Tb1, Tc 1).
Alternatively, when only one fan is on, the operating frequency of the compressor is determined in the following manner: and calculating a frequency correction coefficient b according to the temperature difference Ta-Tb, and controlling the running frequency f of the compressor to be b f (Ta, Tb and Tc), wherein b is less than 1.
Alternatively, when Ta-Tb < T3, b-b 1; when T3 is less than or equal to Ta-Tb is less than or equal to T4, b is 2; and when Ta-Tb is more than T4, b is b3, wherein b1 < b2 < b 3.
Alternatively, T1 ═ 52 ℃, T2 ═ 58 ℃, T3 ═ 7 ℃, T4 ═ 13 ℃, b1 ═ 0.5, b2 ═ 0.8, b3 ═ 0.9.
Optionally, each air outlet is provided with: the vertical swing blade group comprises a plurality of vertical swing blades which extend vertically and are installed at the air outlet, and the plurality of vertical swing blades can be pivoted synchronously to adjust the left and right directions of air outlet; and a yaw blade group including a plurality of yaw blades extending horizontally and installed behind the vertical yaw blades, the plurality of yaw blades being synchronously pivotable to adjust an up-down direction of the outlet air.
Optionally, one fan corresponds to two air outlets, and the other fan corresponds to one air outlet; and the three air outlets are arranged along a straight line.
Optionally, both fans are crossflow fans.
Optionally, the two evaporators are both finned evaporators and share the same fin group, and the coils of the two evaporators are respectively matched with two halves of the fin group.
In the heating control method of the inverter air conditioner, the operation frequency f of the compressor is initially determined as f (Ta, Tb and Tc) according to the indoor target temperature, the indoor environment temperature and the outdoor environment temperature. When both fans are running, both evaporators (used as condensers during heating) can obtain good heat dissipation, and the possibility of over-pressure is low. At this time, the frequency of the compressor can be corrected according to the temperature of the coil of the evaporator, and when the temperature of the coil is lower than T1, the operation frequency is normally calculated according to the function; when the temperature of the coil pipe meets the condition that Td is more than or equal to T1 and less than or equal to T2, the coil pipe keeps constant-frequency operation, and the temperature of the coil pipe is prevented from being further increased. When the temperature Td of the coil pipe is larger than T2, the compressor is controlled to operate in a frequency reduction mode, the pressure of the evaporator is reduced, and the compressor is prevented from operating in an overload mode. When only one fan runs, in order to avoid overhigh pressure caused by unfavorable heat exchange of the evaporator part uncovered by the wind of the fan, the correction coefficient b smaller than 1 is calculated according to the temperature difference Ta-Tb, the running frequency of the compressor is reduced, and the overload running of the compressor is avoided. Therefore, the invention accurately controls the operation frequency of the compressor, so that the air conditioner can meet the heating requirement and prevent the refrigerant circulating system from overload operation.
Furthermore, the indoor unit of the air conditioner is provided with two evaporators, two fans and a plurality of air outlets, the number of the fans to be opened, the air speed and the refrigerant flow of the evaporators can be adjusted according to the heating requirements of users, the intelligent adjustment of the air quantity and the refrigerating capacity/heating capacity is realized, the air quantity and the refrigerating capacity/heating capacity are matched with the indoor requirements better, and the energy consumption of the air conditioner is saved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a part of an air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is an exploded view of an air supply structure of the indoor unit of the air conditioner shown in fig. 1;
fig. 3 is a schematic structural view of an evaporator of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic view of a heating control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart of a heating control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a heating control method of a variable frequency air conditioner. Fig. 1 is a schematic structural view of a part of an air conditioner indoor unit according to an embodiment of the present invention; fig. 2 is an exploded view of an air supply structure of the indoor unit of the air conditioner shown in fig. 1; fig. 3 is a schematic structural view of an evaporator of an indoor unit of an air conditioner according to an embodiment of the present invention, and fig. 3 is a view for distinguishing two evaporators by a dotted line.
As shown in fig. 1 to 3, the indoor unit of the variable frequency air conditioner includes a casing, two evaporators, two fans, a plurality of air outlets, and a plurality of swing blade assemblies. The evaporator 551, the fan 410 and the air outlets 112 and 114 are matched. The evaporator 552, the fan 420 and the air outlet 116 are matched. Fig. 1 only shows the front panel 110 of the housing, the front panel 110 is provided with the air outlet, and the rear side of the housing, which is not shown, is provided with an air inlet. Outdoor air enters the shell from the air inlet, passes through the two evaporators under the driving of the fan, exchanges heat with the evaporators and then is blown to the indoor from the corresponding air outlet, and the refrigeration/heating of the indoor environment is realized.
In the embodiment shown in fig. 1 to 3, the air outlet areas of the three air outlets 112, 114, and 116 may be set to be the same, because the number of the air outlets matched with the evaporator 551 and the fan 410 is large, the heat exchange capability of the evaporator 551 and the air blowing capability of the fan 410 are larger than those of the evaporator 552 and the fan 420. For example, under the same heat exchange condition, the two evaporators 551 and 552 can have twice of the heat exchange amount of the evaporator 551 as compared with the evaporator 552, and the two fans can have twice of the air volume of the fan 410 as compared with the fan 420 at the same rotation speed.
Both fans may be crossflow fans, and in order to make the connection between the crossflow fans and the casing more stable, the motor 411 of the fan 410 may be located at the top thereof and the motor 421 of the fan 420 may be located at the bottom thereof. A bearing may be disposed between the two fans 410, 420.
The plurality of flap assemblies (for example, the plurality of vertical flaps 312 and the plurality of horizontal flaps 322 at the air outlet 112 form a flap assembly) are matched with the plurality of air outlets one by one, and are used for adjusting the wind direction of each air outlet.
The indoor unit of the air conditioner may further include an air duct assembly, the air duct assembly is erected between the fan 410, the fan 420 and the front panel 110, and includes a housing 120 and a plurality of partition plates 121, the housing 120 defines a front-rear open air guide chamber, the partition plates are vertically arranged in the housing to separate the air guide chamber into a plurality of air ducts 123, 124, 125 isolated from each other, each air duct is matched with one air outlet for guiding the air of the fan to the air outlet, and the air flowing to the air outlets is enabled not to interfere with each other.
And, each of the swing blade assemblies includes a vertical swing blade group and a horizontal swing blade group. The vertical swing blade group comprises a plurality of vertical swing blades 312, 314 and 316 which extend vertically and are installed at the air outlets 112, 114 and 116, and the plurality of vertical swing blades can pivot synchronously to adjust the left and right directions of the air outlet. The yaw blade group includes a plurality of horizontally extending yaw blades 324, 326 installed in the wind tunnel, and the plurality of yaw blades are synchronously pivotable to adjust the up-down direction of the wind. The synchronous pivoting of all the transverse swinging blades (or the vertical swinging blades) can be realized by arranging a motor to drive one transverse swinging blade (or the vertical swinging blade) to rotate and hinging the transverse swinging blade (or the vertical swinging blade) and the other transverse swinging blades (or the vertical swinging blades) through a connecting rod. Of course, the horizontal swing blade can be arranged at the air outlet, and the vertical swing blade can be arranged in the air duct.
As shown in fig. 2, the air conditioner includes a compressor 510, a condenser 520, a tee 530, two electronic expansion valves 541, 542 and two evaporators 551, 552, wherein an inlet of the tee 530 is connected to an outlet of the condenser 520, and two outlets of the tee 530 are respectively connected to inlets of the two electronic expansion valves 541, 542. Outlets of the two electronic expansion valves 541 and 542 are respectively communicated with inlets of the evaporator 551 and the evaporator 552. The outlets of the evaporator 551 and the evaporator 552 communicate with the inlet of the compressor 510.
As shown in fig. 1, a liquid separator 561 is disposed behind the throttling element 541, and a liquid separator 562 is disposed behind the electronic expansion valve 542, and both are used for dividing the refrigerant into multiple paths, so as to improve the heat exchange efficiency of the evaporator. During cooling, the refrigerant flows through the coils of the two evaporators, then is merged into the gas collecting pipe 580, and then flows from the gas collecting pipe 580 to the compressor 510.
In some embodiments, as shown in FIG. 4, evaporator 551 and evaporator 552 are finned evaporators with both evaporators sharing the same fin pack 501, with the coil 502 of evaporator 551 mounted on the upper portion of fin pack 501 and the coil 503 of evaporator 552 mounted on the lower portion of fin pack 501. Compare in the independent, each scheme of making from the installation of two evaporimeters, the preparation and the installation of evaporimeter can be made things convenient for to this embodiment, have also practiced thrift casing inner space simultaneously.
In the heating process of the inverter air conditioner, the evaporator is used as a condenser, the pressure (condensing pressure) of an internal refrigerant is high, the power of the compressor is increased due to overhigh pressure, the compressor runs in an overload mode, and the compressor stops. To this end, the heating control method according to the embodiment of the present invention prevents the compressor from being operated in an overload state through the following steps. The condensing pressure can be reduced by reducing the compressor frequency at the appropriate time, and the compressor power can also be reduced.
Fig. 4 is a schematic view of a heating control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 4, the heating control method of the present invention may include the steps of:
step S402, when the air conditioner operates in the heating mode, detecting an indoor target temperature Ta (set by a user), an indoor ambient temperature Tb, an outdoor ambient temperature Tc, and coil temperatures of the two evaporators, wherein a higher temperature value of the two coil temperatures is Td. The temperature can be detected by providing a temperature sensor.
And step S404, detecting the starting states of the two fans, namely determining that the indoor unit of the air conditioner starts a plurality of fans. If both fans are on, step S406 is executed. If only one fan is turned on, step S408 is executed.
Step S406, determining the operating frequency of the compressor according to the temperature range where Td is located and the values of Ta, Tb, Tc.
And step S408, determining the operating frequency of the compressor according to the temperature difference range of Ta-Tb and the values of Ta, Tb and Tc.
Fig. 5 is a flowchart of a heating control method of an air conditioner according to an embodiment of the present invention. In some embodiments, the air conditioner is in a heating mode, and the following steps can be adopted for control.
Step S501, when the air conditioner operates in the heating mode, detecting an indoor target temperature Ta (set by a user), an indoor ambient temperature Tb, an outdoor ambient temperature Tc, and coil temperatures of the two evaporators, where a higher temperature value of the two coil temperatures is Td.
Step S502, detecting the opening states of the two fans, namely determining that the indoor unit of the air conditioner is opened with a plurality of fans. If both fans are on, step S504 is executed. If only one fan is turned on, step S509 is executed.
In step S504, it is determined whether Td < T1 is satisfied, and if so, step S505 is executed, and if not, step S506 is executed.
In step S505, Td < T1 holds. And controlling the compressor to run in a variable frequency mode, wherein the frequency f is f (Ta, Tb and Tc). I.e. the frequency f is a function of Ta, Tb, Tc. The basic idea is to increase the compressor frequency f with increasing temperature difference between Ta and Tb and with increasing Tc. The specific calculation method is the same as the calculation method of the compressor frequency of the prior art in which only one fan and one evaporator are provided, and is not described in detail herein.
In step S506, it is determined whether Td is greater than or equal to T1 and less than or equal to T2, if yes, step S507 is executed, and if not, step S508 is executed.
In step S507, Td of T1 is less than or equal to T2. And controlling the compressor to operate at a fixed frequency, wherein the frequency f is f (Ta1, Tb1 and Tc1), and Ta1, Tb1 and Tc1 are the indoor target temperature, the indoor environment temperature and the outdoor environment temperature when Td just reaches T1 respectively. Since Td has reached or exceeded T1, the compressor is required to maintain the frequency so that the coil temperature does not continue to rise.
In step S508, Td of T1 is not greater than Td T2, i.e., Td > T2. The compressor is controlled to run in a frequency reduction mode, and the frequency f is less than f (Ta1, Tb1, Tc 1). As Td > T2, the coil temperature is too high, and to avoid compressor overload, the compressor needs to be down-clocked as soon as possible to reduce the condensing pressure and compressor power.
In the above steps, the values of T1 and T2 may be determined experimentally according to the load capacity of the compressor, for example, T1 ═ 52 ℃ and T2 ═ 58 ℃.
In the above steps, because of the operation of both fans, both evaporators can obtain good heat dissipation. The frequency of the compressor is corrected according to the temperature of the coil pipe of the evaporator, so that the air conditioner can meet the heating requirement and avoid overload operation of a refrigerant circulating system.
And step S509, when only one fan is started, determining the operating frequency of the compressor according to the temperature difference range of Ta-Tb and the values of Ta, Tb and Tc. Specifically, a frequency correction coefficient b is calculated according to the temperature difference Ta-Tb, and the operation frequency f of the compressor is controlled to be b f (Ta, Tb and Tc), wherein b is less than 1.
Specifically, the value of b may be determined based on the temperature interval in which Ta-Tb is located. When Ta-Tb < T3, b is b 1; when T3 is less than or equal to Ta-Tb is less than or equal to T4, b is 2; and when Ta-Tb is more than T4, b is b3, wherein b1 < b2 < b 3. In some embodiments, T3 ═ 7 ℃, T4 ═ 13 ℃, b1 ═ 0.5, b2 ═ 0.8, and b3 ═ 0.9.
In the above embodiment, in order to avoid the over-high pressure caused by the unfavorable heat exchange of the evaporator part uncovered by the wind of the fan when only one fan is operated, the above embodiment reduces the operation frequency of the compressor by making b < 1, thereby avoiding the overload operation of the compressor.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. A heating control method of a variable frequency air conditioner is disclosed, wherein an indoor unit of the air conditioner comprises two evaporators arranged in parallel and two fans respectively corresponding to the two evaporators, each fan corresponds to at least one air outlet, and the heating control method comprises the following steps:
when the air conditioner operates in a heating mode, detecting an indoor target temperature Ta, an indoor environment temperature Tb, an outdoor environment temperature Tc and coil temperatures of two evaporators, wherein the higher temperature value of the two coil temperatures is Td;
detecting the opening states of the two fans;
if the two fans are started, determining the operating frequency of the compressor according to the temperature range of the Td and the values of Ta, Tb and Tc;
if only one fan is started, determining the operating frequency of the compressor according to the temperature difference range of Ta-Tb and the values of Ta, Tb and Tc;
when both fans are turned on, the operating frequency of the compressor is determined in the following manner:
when Td is less than T1, controlling the compressor to operate in a variable frequency mode, wherein the frequency f is f (Ta, Tb and Tc);
when Td is more than or equal to T1 and less than or equal to T2, controlling the compressor to operate at a fixed frequency, wherein the frequency f is f (Ta1, Tb1 and Tc1), and Ta1, Tb1 and Tc1 are respectively the indoor target temperature, the indoor environment temperature and the outdoor environment temperature when Td just reaches T1;
when Td is more than T2, controlling the compressor to perform down-conversion operation, so that the frequency f is less than f (Ta1, Tb1 and Tc 1);
when only one fan is turned on, the operating frequency of the compressor is determined in the following manner:
and calculating a frequency correction coefficient b according to the temperature difference Ta-Tb, and controlling the running frequency f of the compressor to be b f (Ta, Tb and Tc), wherein b is less than 1.
2. The heating control method according to claim 1, wherein
When Ta-Tb < T3, b is b 1;
when T3 is less than or equal to Ta-Tb is less than or equal to T4, b is 2;
and when Ta-Tb is more than T4, b is b3, wherein b1 < b2 < b 3.
3. The heating control method according to claim 2, wherein
T1＝52℃，T2＝58℃，T3＝7℃，T4＝13℃，b1＝0.5，b2＝0.8，b3＝0.9。
4. The heating control method according to claim 1, wherein each of the air outlets is provided with:
the vertical swinging blade group comprises a plurality of vertical swinging blades which vertically extend and are installed at the air outlet, and the vertical swinging blades can be synchronously pivoted to adjust the left and right directions of air outlet; and
and the yaw blade group comprises a plurality of horizontally extending yaw blades which are installed behind the vertical yaw blades, and the plurality of yaw blades can be synchronously pivoted to adjust the up-down direction of the wind outlet.
5. The heating control method according to claim 1, wherein
One fan corresponds to two air outlets, and the other fan corresponds to one air outlet; and is
The three air outlets are arranged along a straight line.
6. The heating control method according to claim 1, wherein
The two fans are cross-flow fans.
7. The heating control method according to claim 1, wherein
The two evaporators are all fin-type evaporators and share the same fin group, and the coil pipes of the two evaporators are respectively matched with two half parts of the fin group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710840433.1A CN107781946B (en) | 2017-09-18 | 2017-09-18 | Heating control method of variable frequency air conditioner |
| PCT/CN2018/105786 WO2019052540A1 (en) | 2017-09-18 | 2018-09-14 | Heating control method and apparatus for variable-frequency air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710840433.1A CN107781946B (en) | 2017-09-18 | 2017-09-18 | Heating control method of variable frequency air conditioner |
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| CN107781946B true CN107781946B (en) | 2019-12-31 |
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| CN107781946B (en) * | 2017-09-18 | 2019-12-31 | 青岛海尔空调器有限总公司 | Heating control method of variable frequency air conditioner |
| CN110848898B (en) * | 2019-10-11 | 2021-02-12 | 珠海格力电器股份有限公司 | Control method for preventing air conditioner load conversion from stopping, computer readable storage medium and air conditioner |
| CN111649439B (en) * | 2020-05-08 | 2021-12-31 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN113669855B (en) * | 2020-05-13 | 2022-09-16 | 广东美的制冷设备有限公司 | High-temperature sterilization control method, double-through-flow air conditioner and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0979646A (en) * | 1995-09-14 | 1997-03-28 | Toshiba Corp | Air conditioning device |
| JP2001141293A (en) * | 1999-11-10 | 2001-05-25 | Zaza International:Kk | Air conditioner |
| KR20050047623A (en) * | 2003-11-18 | 2005-05-23 | 엘지전자 주식회사 | Air conditioner |
| KR101166380B1 (en) * | 2006-10-17 | 2012-07-23 | 삼성전자주식회사 | Air conditioner and control method thereof |
| CN103629739B (en) * | 2012-08-22 | 2017-03-22 | 珠海格力电器股份有限公司 | Multi-air-outlet air conditioner indoor unit |
| CN104006485B (en) * | 2013-02-21 | 2017-02-08 | 广东美的制冷设备有限公司 | Method for controlling indoor fan rotating speed of air conditioner under heating mode |
| CN103822332B (en) * | 2014-03-14 | 2016-08-24 | 四川长虹空调有限公司 | Air-conditioning based on sleep state regulation temperature and control method thereof |
| CN104697109B (en) * | 2014-12-22 | 2017-03-22 | 青岛海尔空调器有限总公司 | Refrigeration control method, control device and variable frequency air conditioner |
| CN105066353B (en) * | 2015-08-07 | 2018-03-23 | 广东美的制冷设备有限公司 | The wind speed control method and air conditioner of a kind of convertible frequency air-conditioner |
| CN105091238B (en) * | 2015-08-26 | 2017-11-28 | 珠海格力电器股份有限公司 | Air-conditioning system and air conditioner heat-production high temperature-proof control method and device |
| CN106594974B (en) * | 2016-11-14 | 2019-10-25 | 珠海格力电器股份有限公司 | The control method and control device of air-conditioning system, air conditioner and air-conditioning system |
| CN106885340A (en) * | 2017-03-16 | 2017-06-23 | 青岛海尔空调器有限总公司 | The control method of air conditioner room unit zoned air |
| CN107781946B (en) * | 2017-09-18 | 2019-12-31 | 青岛海尔空调器有限总公司 | Heating control method of variable frequency air conditioner |
| CN107781945B (en) * | 2017-09-18 | 2019-05-31 | 青岛海尔空调器有限总公司 | The refrigeration control method of convertible frequency air-conditioner |
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| WO2019052540A1 (en) | 2019-03-21 |
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