CN103574842A - Control method of variable frequency air conditioning system - Google Patents
Control method of variable frequency air conditioning system Download PDFInfo
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- CN103574842A CN103574842A CN201310510474.6A CN201310510474A CN103574842A CN 103574842 A CN103574842 A CN 103574842A CN 201310510474 A CN201310510474 A CN 201310510474A CN 103574842 A CN103574842 A CN 103574842A
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Abstract
The invention discloses a control method of a variable frequency air conditioning system. The variable frequency air conditioning system comprises a controller cooling loop, wherein a variable frequency radiator for radiating a controller is arranged on the controller cooling loop; the variable frequency radiator comprises a variable frequency controller heat exchanger and a variable frequency controller fan. The control method of the variable frequency air conditioning system is characterized by comprising the following steps: (1) detecting temperature and frequency: detecting the temperature TA of a coiled pipe of the variable frequency controller heat exchanger and the actual operation frequency f0 of a compressor; (2) cooling by the controller cooling loop: when TA is more than or equal to t1 DEG C and less than or equal to t2 DEG C and f0 is less than the set frequency fa of the current compressor, closing the controller cooling loop and electrifying the variable frequency controller fan to operate; when TA is more than t2 DEG C and less than or equal to t3 DEG C and f0 is less than fa, opening the controller cooling loop, connecting the controller cooling loop into a main refrigerant loop and powering off the variable frequency controller fan. According to the control method of the variable frequency air conditioning system, efficient and reliable operation is realized.
Description
Technical field
The invention belongs to air-conditioner control field, relate in particular to the control method of frequency-conversion air-conditioning system.
Background technology
Existing transducer air conditioning, its compressor frequency range of operation is generally at 20～90Hz, continuous rising along with outdoor environment temperature, air conditioner load strengthens increased power, causes controller power constantly to raise, and controller module temperature also constantly raises, even arrive more than 105 ℃, controller heating temp has limited the high-frequency operation of compressor, and the demand of refrigerating capacity (or heating capacity) is now often larger, so the not enough impact of refrigerating capacity (or heating capacity) is also more outstanding.
Have again; air-conditioner outdoor unit installation environment also has higher requirement; that air-conditioner outdoor unit installation environment need to ventilate is smooth and easy, avoid the environment such as dust and greasy dirt; and in actual use; along with air-conditioning is elongated service time, outdoor finned heat exchanger can be covered by dust, under hot weather; due to the bad faults frequent that easily causes convertible frequency air-conditioner of heat radiation, air-conditioning does not freeze or disorderly closedown protection.
Summary of the invention
The present invention is mainly to provide a kind of control method of frequency-conversion air-conditioning system, can efficient, reliability service.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: it comprises controller cooling loop, described controller cooling is provided with for the frequency conversion radiator to controller heat radiation on loop, described frequency conversion radiator comprises frequency-variable controller heat exchanger and frequency-variable controller blower fan, it is characterized in that, comprise the following steps:
(1) temperature, frequency detecting step: the coil temperature TA, the compressor actual motion frequency f that detect described frequency-variable controller heat exchanger
0;
(2) controller cooling loop cooling step:
As t1≤TA≤t2 ℃ and f
0the current compressor setpoint frequency of < f
atime
,described controller cooling loop is closed, described frequency-variable controller blower fan energising operation;
As t2 ℃ of < TA≤t3 ℃ and f
0< f
atime, open in described controller cooling loop, access described main refrigerant loop, controller cooling loop, the power-off of described frequency-variable controller blower fan.
As preferably, in described step 2 when 105 ℃ of 95 ℃ of TA > or compressor exhaust temperature TB >, the operation frequently of controller limit.
As preferably, in described step 2: when TA drops to 83 ℃, stop described controller loop cooling step.
As preferably, described t1 is 85 ℃, and described t2 is 90 ℃, and described t3 is 95 ℃, in described step 2 as TA < t1 and f
0>=f
atime, described controller cooling loop is closed condition, described frequency-variable controller blower fan is off-position.As preferably, during refrigerating operaton, according to the temperature difference at indoor heat exchanger entrance point and port of export two ends, regulate the aperture that is arranged on the choke valve between indoor heat exchanger and outdoor heat exchanger, and carry out degree of superheat correction according to the temperature difference of the indoor indoor heat exchanger port of export and compressor air suction end.
As preferably, during heating operation, according to the temperature difference at indoor indoor heat exchanger entrance point and port of export two ends, regulate the aperture that is arranged on the choke valve between indoor heat exchanger and outdoor heat exchanger, and carry out degree of superheat correction according to the temperature difference of the coil temperature of outdoor outdoor heat exchanger and compressor air suction end temperature.
As preferably, when outdoor environment temperature TC≤-15 ℃, open in described controller cooling loop, described frequency-variable controller blower fan energising operation.
As preferably, when 2 ℃ of TD-TE <, increase the aperture of choke valve on described controller cooling loop;
When 4 ℃ of TD-TE >, reduce the aperture of choke valve on described controller cooling loop;
When 2 ℃≤TD-TE≤4 ℃, on described controller cooling loop, the aperture of choke valve is constant.
Above-mentioned TD is the port of export temperature of frequency conversion radiator, and TE is compressor inlet end temperature.
As preferably, during 102 ℃ of exhaust sensor TB >, open in described controller cooling loop.
As preferably, described frequency-conversion air-conditioning system comprises main refrigerant loop and controller cooling loop, described main refrigerant is provided with compressor, four-way change-over valve, outdoor heat exchanger and indoor heat exchanger on loop, described controller cooling one end, loop is connected with the outlet of described outdoor heat exchanger, and the other end is connected with the air entry of described compressor reducer.
The beneficial effect that the present invention brings is, carries out electric motor temperature reduction or Liquid injection cooling controller when the present invention is freezed, and reduces controller temperature, realizes the operation of unit high temperature environment refrigerating; During low-temperature heating, carry out jetly, improve air inflow and promote heating capacity, make controller reliably, efficiently operation; Automatic regulation controller temperature of the present invention, effectively improves controller reliability, realizes refrigeration under high ambient temperature, heats high-frequency operation, has improved high-temperature refrigeration amount and low-temperature heating capacity, makes room fast temperature rising.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present invention;
A kind of structural representation when accompanying drawing 2 is refrigerating operaton of the present invention;
A kind of structural representation when accompanying drawing 3 is heating operation of the present invention.
Label declaration: 1, compressor; 2, four-way change-over valve; 3, outdoor heat exchanger; 4, outdoor heat exchanger blower fan; 5, the first filter; 6, first throttle valve; 7, the second filter; 8, indoor heat exchanger; 9, the first check valve; 10, indoor heat exchanger blower fan; 11, frequency-variable controller blower fan; 12, frequency conversion radiator; 13, frequency-variable controller heat exchanger; 14, electromagnetic throttle valve; 15, the second check valve; 16, the 3rd check valve; TP1, exhaust sensor; TP2, return-air sensor; TP3, outdoor sensor; TP4, outdoor coil pipe used sensor; TP5, indoor heat exchanger inlet sensor; TP6, indoor heat exchanger coil pipe sensor; TP7, interior sensor; TP8, indoor heat exchanger outlet sensor; TP9, radiator outlet sensor; TP10, radiator sensor.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the frequency-conversion air-conditioning system of the present embodiment as shown in Figure 1, comprise main refrigerant loop and controller cooling loop, main refrigerant is provided with compressor 1 on loop, four-way change-over valve 2, outdoor heat exchanger 3, outdoor heat exchanger blower fan 4, the first filter 5, first throttle valve 6, the second filter 7, indoor heat exchanger 8, indoor heat exchanger blower fan 10, compressor 1, four-way change-over valve 2, outdoor heat exchanger 3, the first filter 5, first throttle valve 6, the second filter 7, indoor heat exchanger 8 is connected to form main refrigerant loop successively by pipeline, controller cooling is provided with for the frequency conversion radiator 12 to controller heat radiation on loop, for controlling electromagnetic throttle valve 14 and first check valve 9 in controller cooling loop.
A plurality of temperature sensors are also installed on frequency-conversion air-conditioning system, these temperature sensors comprise the exhaust sensor TP1 that detects compressor reducer delivery temperature, detect the return-air sensor TP2 of compressor 1 suction temperature, detect the outdoor sensor TP3 of outdoor environment temperature, the outdoor coil pipe used sensor TP4 of sensing chamber's external heat exchanger 3 coil temperatures, detect the indoor heat exchanger inlet sensor TP5 of indoor heat exchanger 8 inlet temperatures, detect the indoor heat exchanger coil pipe sensor TP6 of indoor heat exchanger 8 coil temperatures, detect the interior sensor TP7 of indoor environment temperature and the indoor heat exchanger outlet sensor TP8 of detection indoor heat exchanger 8 outlet temperatures, detect the radiator sensor TP10 of frequency conversion radiator 12 coil temperatures, and the radiator outlet sensor TP9 that detects the outlet temperature of frequency conversion radiator 12.
First branch road of controller cooling one end, loop is by the pipeline between the second check valve 15 access outdoor heat exchangers 3 and first throttle valve 6, be that controller cooling loop is connected with the outlet of outdoor heat exchanger 3 by the second check valve 15, the second branch road of this end is by the pipeline between the 3rd check valve 16 access first throttle valves 6 and indoor heat exchanger 8, i.e. controller cooling loop is connected with indoor heat exchanger 8 by the 3rd check valve 16.
The controller cooling loop other end is connected with the air entry of compressor reducer by the first check valve 9.
Frequency conversion radiator 12 comprises frequency-variable controller heat exchanger 13 and the frequency-variable controller blower fan 11 matching with frequency-variable controller heat exchanger 13.Frequency-variable controller heat exchanger 13 comprises housing and cooling coil.
as shown in Figure 2, during refrigerating operaton:refrigerant gas is discharged from compressor 1 exhaust outlet, enter four-way change-over valve 2, by four-way change-over valve 2, enter outdoor heat exchanger 3 imports again, high pressure, high temperature refrigerant cooling is flowed out by outdoor heat exchanger 3, then divide two-way to flow: the first via enters the first filter 5, the second tunnels and enters the second check valve 15.The first via cold-producing medium flowing out from outdoor heat exchanger 3 enters the first filter 5 and filters, from first filter 5 other ends flow out, high-pressure refrigerant enters first throttle valve 6 and carries out throttling, after throttling, cold-producing medium enters the second filter 7 from first segment choke valve, the cold-producing medium flowing out from the second filter 7 divides two-way to flow subsequently: a road enters the 3rd check valve 16 imports, one tunnel enters indoor heat exchanger 8 and enter four-way change-over valve 2 after indoor heat exchanger 8 evaporation, again from four-way change-over valve 2 flows out, through compressor 1 air entry, enter compressor 1 compression, kind of refrigeration cycle so repeatedly.
Under normality, electromagnetic throttle valve 14 is closed condition, i.e. controller cooling loop is closed condition, and main refrigerant loop is not accessed in controller cooling loop.When open in controller cooling loop, the the second road cold-producing medium flowing out from outdoor heat exchanger 3 enters the second check valve 15, from second check valve 15 other ends, flow out, after electromagnetic throttle valve 14 throttlings, enter frequency-variable controller interchanger, liquid refrigerant, after the evaporation of frequency-variable controller interchanger, enters the first check valve 9, from the first check valve 9 flows out, by compressor 1 air entry, enter compressor 1.
as shown in Figure 3, during heating operation:refrigerant gas is discharged from compressor 1 exhaust outlet, enter four-way change-over valve 2, by four-way change-over valve 2, enter indoor heat exchanger 8 heat release condensations again, high pressure, high temperature refrigerant cooling is flowed out by indoor heat exchanger 8, then divide two-way to flow: the first via enters the second filter 7, the second tunnels and enters the 3rd check valve 16 imports.The first via cold-producing medium flowing out from indoor heat exchanger 8 enters the second filter 7 filtrations, from second filter 7 other ends flow out, enter first throttle valve 6 and carry out throttling, after throttling, cold-producing medium enters after the first filter 5 filters and flows out, and the cold-producing medium flowing out from the first filter 5 divides two-way to flow subsequently: a road enters the second check valve 15; One tunnel enters outdoor heat exchanger 3 and evaporates, and the refrigerant gas flowing out after evaporation enters four-way change-over valve 2, then from four-way change-over valve 2 flows out, through compressor 1 air entry, enters compressor 1 compression, so repeatedly kind of refrigeration cycle.
Under normality, electromagnetic throttle valve 14 is closed condition, i.e. controller cooling loop is closed condition, and main refrigerant loop is not accessed in controller cooling loop.When open in controller cooling loop, the the second road cold-producing medium flowing out from indoor heat exchanger 8 enters the 3rd check valve 16, from the 3rd check valve 16 other ends, flow out, after electromagnetic throttle valve 14 throttlings, enter frequency-variable controller interchanger, liquid refrigerant, after the evaporation of frequency-variable controller interchanger, enters the first check valve 9, from the first check valve 9 flows out, by compressor 1 air entry, enter compressor 1.
When 95 ℃ of the coil temperature TA of frequency-variable controller heat exchanger 13 >; controller module surface temperature raises; unit there will be frequency limitation operation; higher when 105 ℃ of TA >; long-play is prone to the serious consequences such as punch through damage, the shutdown of unit fault alarm, and impact is normal to be used and reliability.
The control method of the frequency-conversion air-conditioning system of the present embodiment, comprises the following steps:
(1) temperature, frequency detecting step: the coil temperature TA, the compressor 1 actual motion frequency f that detect frequency-variable controller heat exchanger 13
0.
(2) degree of superheat correction step:
As 85 ℃ of TA < and f
0>=f
atime, electromagnetic throttle valve 14 no powers, controller cooling loop is closed condition, frequency-variable controller blower fan 11 is off-position; During refrigerating operaton, according to the temperature difference at indoor indoor heat exchanger 8 entrance points and port of export two ends, regulate the aperture that is arranged on the choke valve between indoor heat exchanger 8 and outdoor heat exchanger 3, and carry out degree of superheat correction according to the temperature difference of indoor indoor heat exchanger 8 ports of export and compressor 1 suction end; During heating operation, according to indoor heat exchanger 8 coil temperature Tm(, be indoor heat exchanger 8 temperature) regulate the aperture that is arranged on the first throttle valve 6 between indoor heat exchanger 8 and outdoor heat exchanger 3, during Tm≤target temperature-2 ℃, the current operational objective aperture of choke valve basis-2; During Tm < target temperature+1 ℃, choke valve keeps current operational objective aperture; During Tm > target temperature+2 ℃, the current operational objective aperture of choke valve basis+2; The every 30S of controller detects and adjusts 1 time; And carry out degree of superheat correction according to the temperature difference of the coil temperature of outdoor outdoor heat exchanger 3 and compressor 1 suction end temperature.
(3) controller cooling loop cooling step:
A, as 85 ℃≤TA≤90 ℃ and f
0the current compressor 1 setpoint frequency f of <
atime, electromagnetic throttle valve 14 no powers, controller cooling loop is closed, the 11 energising operations of frequency-variable controller blower fan; f
0>=f
atime, maintain the original state;
B, as 90 ℃ of < TA≤95 ℃ and f
0< f
atime, electromagnetic throttle valve 14 energisings are opened, and controller cooling loop is opened, and main refrigerant loop is accessed, 11 power-off of frequency-variable controller blower fan in controller cooling loop; f
0>=f
atime, maintain the original state;
In c, controller loop cooling step, when TA drops to 83 ℃, stop control cooling loop cooling step;
As 80 ℃ of < TA≤95 ℃ and f
0< f
atime, controller can frequent be adjusted and switch, low unstable when high during performance, now adopts controller cooling loop effectively to reduce controller temperature, and the energy-efficient performance of air-conditioning is also improved.
(4) controller limit frequency operating procedure:
When 105 ℃ of 95 ℃ of TA > or compressor 1 delivery temperature TB >, air-conditioning enters limit operation frequently.Frequently in service in limit, controller moves with 2Hz/min speed.
When 102 ℃ of TB >, open in controller cooling loop.
(5) low temperature high frequency increases enthalpy drop temperature heating operation step:
When outdoor environment temperature TC≤-15 ℃, open in controller cooling loop, the 11 energising operations of frequency-variable controller blower fan.
A, when 2 ℃ of TD-TE <, increase the aperture of choke valve on controller cooling loop;
B, when 4 ℃ of TD-TE >, reduce the aperture of choke valve on controller cooling loop;
C, when 2 ℃≤TD-TE≤4 ℃, on controller cooling loop, the aperture of choke valve is constant.
Above-mentioned TD is the port of export temperature of frequency device radiator, and TE is compressor reducer inlet end temperature, and unit maximizes effect according to demand, meets consumers' demand fast, and unfailing performance is high.
Below only just preferred embodiment of the present invention is described, but can not be interpreted as it is limiting the scope of the invention.The present invention is not only confined to above embodiment, and its concrete structure or shape allow to change.In a word, protection scope of the present invention should comprise those apparent conversion or alternative and remodeling to those skilled in the art.
Claims (10)
1. the control method of a frequency-conversion air-conditioning system, comprise controller cooling loop, described controller cooling is provided with for the frequency conversion radiator to controller heat radiation on loop, described frequency conversion radiator comprises frequency-variable controller heat exchanger and frequency-variable controller blower fan, it is characterized in that, comprise the following steps:
(1) temperature, frequency detecting step: the coil temperature TA, the compressor actual motion frequency f that detect described frequency-variable controller heat exchanger
0;
(2) controller cooling loop cooling step:
As t1≤TA≤t2 ℃ and f
0the current compressor setpoint frequency of < f
atime
,described controller cooling loop is closed, described frequency-variable controller blower fan energising operation;
As t2 ℃ of < TA≤t3 ℃ and f
0< f
atime, open in described controller cooling loop, access described main refrigerant loop, controller cooling loop, the power-off of described frequency-variable controller blower fan.
2. the control method of frequency-conversion air-conditioning system according to claim 1, is characterized in that, in described step 2 when 105 ℃ of 95 ℃ of TA > or compressor exhaust temperature TB >, the operation frequently of controller limit.
3. the control method of frequency-conversion air-conditioning system according to claim 1, is characterized in that, in described step 2: when TA drops to 83 ℃, stop described controller cooling loop cooling step.
4. the control method of frequency-conversion air-conditioning system according to claim 1, is characterized in that, described t1 is 85 ℃, and described t2 is 90 ℃, and described t3 is 95 ℃, works as TA < t1 and f in described step 2
0>=f
atime, described controller cooling loop is closed condition, described frequency-variable controller blower fan is off-position.
5. the control method of frequency-conversion air-conditioning system according to claim 3, it is characterized in that, during refrigerating operaton, according to the temperature difference at indoor indoor heat exchanger entrance point and port of export two ends, regulate the aperture that is arranged on the choke valve between indoor heat exchanger and outdoor heat exchanger, and carry out degree of superheat correction according to the temperature difference of the indoor indoor heat exchanger port of export and compressor air suction end.
6. the control method of frequency-conversion air-conditioning system according to claim 3, it is characterized in that, during heating operation, according to the temperature difference at indoor indoor heat exchanger entrance point and port of export two ends, regulate the aperture that is arranged on the choke valve between indoor heat exchanger and outdoor heat exchanger, and carry out degree of superheat correction according to the temperature difference of the coil temperature of outdoor outdoor heat exchanger and compressor air suction end temperature.
7. the control method of frequency-conversion air-conditioning system according to claim 1, is characterized in that, when outdoor environment temperature TC≤-15 ℃, open in described controller cooling loop, described frequency-variable controller blower fan energising operation.
8. the control method of frequency-conversion air-conditioning system according to claim 6, is characterized in that,
When 2 ℃ of TD-TE <, increase the aperture of choke valve on described controller cooling loop;
When 4 ℃ of TD-TE >, reduce the aperture of choke valve on described controller cooling loop;
When 2 ℃≤TD-TE≤4 ℃, on described controller cooling loop, the aperture of choke valve is constant.
Above-mentioned TD is the port of export temperature of frequency device radiator, and TE is compressor reducer inlet end temperature.
9. the control method of frequency-conversion air-conditioning system according to claim 1, is characterized in that, during 102 ℃ of exhaust sensor TB >, open in described controller cooling loop.
10. the control method of frequency-conversion air-conditioning system according to claim 1, it is characterized in that, described frequency-conversion air-conditioning system comprises main refrigerant loop and controller cooling loop, described main refrigerant is provided with compressor, four-way change-over valve, outdoor heat exchanger and indoor heat exchanger on loop, described controller cooling one end, loop is connected with the outlet of described outdoor heat exchanger, and the other end is connected with the air entry of described compressor reducer.
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| CN201310510474.6A CN103574842A (en) | 2013-10-26 | 2013-10-26 | Control method of variable frequency air conditioning system |
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|---|---|---|---|
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157127A (en) * | 2015-06-30 | 2015-12-16 | 广东美的制冷设备有限公司 | Cooling system and method for electric control unit of air conditioner |
| CN106524419A (en) * | 2016-11-22 | 2017-03-22 | 广东美的暖通设备有限公司 | Air conditioner control method and air conditioning equipment |
| CN106801921A (en) * | 2017-02-21 | 2017-06-06 | 广东美的暖通设备有限公司 | Air injection enthalpy-increasing air-conditioning system and its control method |
| CN106871378A (en) * | 2017-03-29 | 2017-06-20 | 广东美的暖通设备有限公司 | Determination methods and device that air-conditioner exchanges heat bad |
| CN108548294A (en) * | 2018-03-30 | 2018-09-18 | 青岛海尔空调器有限总公司 | A kind of control method and device of air-conditioning system |
| CN108759445A (en) * | 2018-08-23 | 2018-11-06 | 广州晟启能源设备有限公司 | A kind of air-cooled dehumidifying heat pump |
| CN110671799A (en) * | 2019-10-12 | 2020-01-10 | 青岛海信日立空调系统有限公司 | Air conditioning system and refrigerant flow control method |
| CN111365819A (en) * | 2020-03-26 | 2020-07-03 | 宁波奥克斯电气股份有限公司 | Control method and device for adjusting high-temperature refrigerating capacity of air conditioner and air conditioner |
| CN112524780A (en) * | 2020-12-09 | 2021-03-19 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner and air conditioner indoor unit |
| US11060748B2 (en) | 2016-11-09 | 2021-07-13 | Kevin Daniel Martin Moore | Methods for reducing energy consumption in a heating, ventilation and air conditioning (HVAC) system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63187042A (en) * | 1987-01-30 | 1988-08-02 | Toshiba Corp | Air conditioner |
| US4939910A (en) * | 1986-10-30 | 1990-07-10 | Tokyo Shibaura Electric Co | Air conditioner |
| CN2497209Y (en) * | 2001-07-09 | 2002-06-26 | 广东科龙电器股份有限公司 | Air conditioner having heat-absorpting device in electric appliance box |
| CN1828186A (en) * | 2006-04-11 | 2006-09-06 | 珠海格力电器股份有限公司 | Heat pump air conditioner system and its steam jet control device and method |
| CN101377322A (en) * | 2007-08-31 | 2009-03-04 | 乐金电子(天津)电器有限公司 | Frequency-changing air conditioner outdoor machine |
| CN201348396Y (en) * | 2009-01-19 | 2009-11-18 | 广东美的电器股份有限公司 | Frequency-change air conditioner |
-
2013
- 2013-10-26 CN CN201310510474.6A patent/CN103574842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939910A (en) * | 1986-10-30 | 1990-07-10 | Tokyo Shibaura Electric Co | Air conditioner |
| JPS63187042A (en) * | 1987-01-30 | 1988-08-02 | Toshiba Corp | Air conditioner |
| CN2497209Y (en) * | 2001-07-09 | 2002-06-26 | 广东科龙电器股份有限公司 | Air conditioner having heat-absorpting device in electric appliance box |
| CN1828186A (en) * | 2006-04-11 | 2006-09-06 | 珠海格力电器股份有限公司 | Heat pump air conditioner system and its steam jet control device and method |
| CN101377322A (en) * | 2007-08-31 | 2009-03-04 | 乐金电子(天津)电器有限公司 | Frequency-changing air conditioner outdoor machine |
| CN201348396Y (en) * | 2009-01-19 | 2009-11-18 | 广东美的电器股份有限公司 | Frequency-change air conditioner |
Cited By (15)
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|---|---|---|---|---|
| CN105157127B (en) * | 2015-06-30 | 2019-02-12 | 广东美的制冷设备有限公司 | The automatically controlled cooling system of air conditioner and cooling means |
| CN105157127A (en) * | 2015-06-30 | 2015-12-16 | 广东美的制冷设备有限公司 | Cooling system and method for electric control unit of air conditioner |
| US11060748B2 (en) | 2016-11-09 | 2021-07-13 | Kevin Daniel Martin Moore | Methods for reducing energy consumption in a heating, ventilation and air conditioning (HVAC) system |
| CN106524419A (en) * | 2016-11-22 | 2017-03-22 | 广东美的暖通设备有限公司 | Air conditioner control method and air conditioning equipment |
| CN106801921A (en) * | 2017-02-21 | 2017-06-06 | 广东美的暖通设备有限公司 | Air injection enthalpy-increasing air-conditioning system and its control method |
| CN106871378A (en) * | 2017-03-29 | 2017-06-20 | 广东美的暖通设备有限公司 | Determination methods and device that air-conditioner exchanges heat bad |
| CN106871378B (en) * | 2017-03-29 | 2019-12-20 | 广东美的暖通设备有限公司 | Method and device for judging poor heat exchange of air conditioner |
| CN108548294B (en) * | 2018-03-30 | 2021-01-29 | 青岛海尔空调器有限总公司 | Control method and device of air conditioning system |
| CN108548294A (en) * | 2018-03-30 | 2018-09-18 | 青岛海尔空调器有限总公司 | A kind of control method and device of air-conditioning system |
| CN108759445A (en) * | 2018-08-23 | 2018-11-06 | 广州晟启能源设备有限公司 | A kind of air-cooled dehumidifying heat pump |
| CN110671799A (en) * | 2019-10-12 | 2020-01-10 | 青岛海信日立空调系统有限公司 | Air conditioning system and refrigerant flow control method |
| CN110671799B (en) * | 2019-10-12 | 2021-02-19 | 青岛海信日立空调系统有限公司 | Air conditioning system and refrigerant flow control method |
| CN111365819A (en) * | 2020-03-26 | 2020-07-03 | 宁波奥克斯电气股份有限公司 | Control method and device for adjusting high-temperature refrigerating capacity of air conditioner and air conditioner |
| CN112524780A (en) * | 2020-12-09 | 2021-03-19 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner and air conditioner indoor unit |
| CN112524780B (en) * | 2020-12-09 | 2022-09-06 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner and air conditioner indoor unit |
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Application publication date: 20140212 |