CN101788179B - Control method of variable frequency air conditioner - Google Patents
Control method of variable frequency air conditioner Download PDFInfo
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- CN101788179B CN101788179B CN2010101167329A CN201010116732A CN101788179B CN 101788179 B CN101788179 B CN 101788179B CN 2010101167329 A CN2010101167329 A CN 2010101167329A CN 201010116732 A CN201010116732 A CN 201010116732A CN 101788179 B CN101788179 B CN 101788179B
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Abstract
The invention relates to a control method of a variable frequency air conditioner. The variable frequency air conditioner comprises a compressor, a four-way change valve, an outdoor heat exchanger, an outdoor fan, a throttling element, an indoor heat exchanger and an indoor fan, wherein an exhaust outlet of the compressor is provided with a compressor exhaust temperature sensor; an outdoor environment temperature sensor and an outdoor heat exchanger temperature sensor are arranged on the outdoor heat exchanger; and an indoor environment temperature sensor and an indoor heat exchanger temperature sensor are arranged on the indoor heat exchanger. When more than one temperature sensor breaks down, the variable frequency air conditioner can be operated according to the following control method of defaulting the detection temperature of the indoor environment temperature sensor to be 26 DEG C under a refrigeration, dehumidification or ventilation mode when the indoor environment temperature sensor breaks down. The invention can ensure that the air conditioner can be still normally used when partial sensors break down so as to ensure that a consumer furthest uses the variable frequency air conditioner with faults and reduce troubles caused by the faults of the air conditioner to the consumer.
Description
Technical field
The present invention relates to the control method of a kind of convertible frequency air-conditioner, particularly a kind of convertible frequency air-conditioner.
Background technology
If compressor is likened to the heart of human body in air-conditioning system, sensor can be likened the nerve at each position of health in frequency-conversion air-conditioning system so.Convertible frequency air-conditioner in the market mostly is to have following temperature sensor; See accompanying drawing 1, comprise outdoor environment temperature sensor 5, compressor exhaust temperature sensor 2, outdoor heat exchanger temperature sensor 4, indoor environment temperature sensor 10 and indoor heat exchanger temperature sensor 9.
The effect of each temperature sensor is roughly following: the outdoor environment temperature sensor is used for sensing chamber's external air inlet temperature, plays the effect of protection system under defrosting or adverse circumstances; The compressor exhaust temperature sensor is used for detecting compressor exit temperature, and compressor is shielded; The outdoor heat exchanger temperature sensor is used for sensing chamber's external heat exchanger temperature, is used for protection system and defrosting to use; The outdoor heat exchanger temperature sensor is used for detecting indoor environment temperature, and FREQUENCY CONTROL is worked; The indoor heat exchanger temperature sensor is used for heat exchange temperature in the sensing chamber, plays protection system and heats anti-cold wind effect.
But; In existing frequency conversion one-to-one air-conditioning system; Exist a shortcoming: after wherein some or several the breaking down, whole air-conditioning just can not use when existing these temperature sensors, could continue use behind the temperature sensor that must wait the maintenance personal more to renew at once.And, can cause a very long time air-conditioning not use because the maintenance personal can not in time arrive or the shortage of material.The user can not the good use air-conditioning and is brought more complaint to enterprise.
Summary of the invention
The object of the invention aims to provide a kind of flexible operation, can make convertible frequency air-conditioner when the portion temperature sensor breaks down, still can normally use, reduce the control method that the air-conditioning fault is given the convertible frequency air-conditioner of consumer's trouble caused, to overcome weak point of the prior art.
Press the control method of a kind of convertible frequency air-conditioner of this purpose design; Convertible frequency air-conditioner comprises compressor, four-way change-over valve, outdoor heat exchanger, outdoor fan, restricting element, indoor heat exchanger and indoor fan; Air exit at compressor is provided with the compressor exhaust temperature sensor; Outdoor heat exchanger is provided with outdoor environment temperature sensor and outdoor heat exchanger temperature sensor; Indoor heat exchanger is provided with indoor environment temperature sensor and indoor heat exchanger temperature sensor, it is characterized in that when the temperature sensor more than one of them breaks down, and convertible frequency air-conditioner can move by following control method:
When 1) the indoor environment temperature sensor breaks down:
Under refrigeration, dehumidifying or the air vent mode, the temperature that acquiescence indoor environment temperature sensor detects is 26 ℃;
During heating mode, the temperature that acquiescence indoor environment temperature sensor detects is 24 ℃;
When automatic mode started down, the temperature that acquiescence indoor environment temperature sensor detects was 25 ℃;
During by above-mentioned mode operation, environment temperature sensor fault in the display room simultaneously;
2) indoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 10 ℃ detects indoor environment temperature＜21 ℃, and indoor fan is forced to blow high wind, and with anti-freeze, temperature＜35 of sensing chamber's external heat exchanger ℃ are shut down and do not moved simultaneously;
During heating mode, start 3 minutes within, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 30 ℃, indoor fan blows low wind; After 3 minutes, detect indoor environment temperature >=20 ℃, indoor fan blows apoplexy;
Heat overload protection, when outdoor heat exchange actuator temperature >=15 ℃, the highest frequency of compressor operating frequency is 50Hz, and when temperature >=20 of outdoor heat exchanger ℃, the highest frequency of compressor operating frequency is 40Hz; During by above-mentioned mode operation, heat exchange temperature sensor fault in the display room simultaneously;
The high wind here is meant the high rotating speed operation that motor designs according to itself, and low wind is meant motor according to the slow-speed of revolution operation that itself designs, and each rotating speed of motor is different according to the actual conditions meeting;
3) outdoor environment temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor environment temperature sensor detects is 30 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves by refrigeration fan after 3 minutes and carries out;
The temperature that acquiescence outdoor environment temperature sensor detects during heating mode is 10 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves and carries out by heating blower fan after 3 minutes;
During defrosting mode, outdoor heat exchange actuator temperature＜-6 ℃ continuous 3 minutes get into defrosting, running time be 45 minutes once;
During by above-mentioned mode operation, display room external environment temperature sensor fault simultaneously;
4) outdoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 45 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature >=28 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
During heating mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 3 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature≤16 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
Refrigeration is during overload protection, and when outdoor environment temperature >=40 ℃, the highest frequency of compressor operating frequency is 60Hz; When outdoor environment temperature >=45 ℃; The highest frequency of compressor operating frequency is 45Hz, and when outdoor environment temperature >=50 ℃, the highest frequency of compressor operating frequency is 35Hz;
The processing of defrosting: when testing environment temperature >=10 ℃, do not defrost, otherwise handle by fixed machine frequently, defrosting in 45 minutes once, be 5 minutes post-set time; Heat and do not adjust continuous time;
During by above-mentioned mode operation, display room external heat exchanger temperature sensor fault simultaneously;
The frequency machine of deciding here is meant common air-conditioning, and the non-frequency machine is promptly handled by the processing mode of common air-conditioning;
5) compressor exhaust temperature sensor fault:
When the compressor exhaust temperature sensor fault occurring, the temperature that acquiescence compressor exhaust temperature sensor detects is 80 ℃;
Refrigeration or dehumidification mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of indoor environment temperature and indoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency;
Heating mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of outdoor environment temperature and outdoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; After detecting protector tripping once, no longer restart because of compressor;
During by above-mentioned mode operation, show the compressor exhaust temperature sensor fault simultaneously;
6) indoor environment temperature sensor and outdoor environment temperature sensor all break down:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor environment temperature sensor fault;
During by above-mentioned mode operation, environment temperature sensor and outdoor environment temperature sensor fault in the display room in turn;
7) indoor environment temperature sensor and outdoor heat exchanger temperature sensor fault:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor heat exchanger temperature sensor fault, but the compressor operating frequency is selected with minimum control the in the two;
During by above-mentioned mode operation, environment temperature sensor and outdoor heat exchanger temperature sensor fault in the display room in turn;
8) indoor environment temperature sensor and compressor exhaust temperature sensor fault:
Control respectively according to indoor environment temperature sensor fault and compressor exhaust temperature sensor fault, respectively according to each self-corresponding flow chart operation, but the compressor operating frequency is selected with minimum control the in the two;
During by above-mentioned mode operation, environment temperature sensor and compressor exhaust temperature sensor fault in the display room in turn;
9) when other temperature sensor faults that make up more than two occurring, do not allow operation.
The present invention can make air-conditioning when operative sensor breaks down, still can normally use, and the convertible frequency air-conditioner that the maximum use of consumer has been broken down reduces the air-conditioning fault and gives consumer's trouble caused; Also gain time simultaneously, farthest reduce customer complaint and safeguard the brand of enterprise to enterprise's maintenance.
Description of drawings
Fig. 1 is the convertible frequency air-conditioner schematic diagram of prior art.
Fig. 2 is the appliance wiring figure of one embodiment of the invention.
Fig. 3 is the working state schematic representation of each assembly among the present invention when refrigeration is normally moved.
When Fig. 4 breaks down for the indoor environment temperature sensor among the present invention, the working state schematic representation of each assembly.
Process chart when Fig. 5 breaks down in process of refrigerastion for the indoor heat exchanger temperature sensor among the present invention.
Process chart when Fig. 6 breaks down in the process of heating for the indoor heat exchanger temperature sensor among the present invention.
Fig. 7 for the outdoor environment temperature sensor among the present invention heat or process of refrigerastion in process chart when breaking down.
Process chart when Fig. 8 breaks down in defrost process for the outdoor environment temperature sensor among the present invention.
Process chart when Fig. 9 breaks down in process of refrigerastion for the outdoor heat exchanger temperature sensor among the present invention.
Process chart when Figure 10 breaks down in defrost process for the outdoor heat exchanger temperature sensor among the present invention.
Process chart when Figure 11 breaks down in process of refrigerastion for the compressor exhaust temperature sensor among the present invention.
Process chart when Figure 12 breaks down in the process of heating for the compressor exhaust temperature sensor among the present invention.
Among the figure: 1 is compressor, and 2 is the compressor exhaust temperature sensor, and 3 is four-way change-over valve; 4 is the outdoor heat exchanger temperature sensor, and 5 is the outdoor environment temperature sensor, and 6 is outdoor heat exchanger; 7 is outdoor fan, and 8 is restricting element, and 9 is the indoor heat exchanger temperature sensor; 10 is the indoor environment temperature sensor, and 11 is indoor heat exchanger, and 12 is indoor fan.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Below continue to use the Reference numeral identical with background technology.
Referring to Fig. 2-Figure 12; The control method of this convertible frequency air-conditioner; Convertible frequency air-conditioner comprises compressor 1, four-way change-over valve 3, outdoor heat exchanger 6, outdoor fan 7, restricting element 8, indoor heat exchanger 11 and indoor fan 12; Air exit at compressor 1 is provided with compressor exhaust temperature sensor 2, and outdoor heat exchanger 6 is provided with outdoor environment temperature sensor 5 and outdoor heat exchanger temperature sensor 4, and indoor heat exchanger 11 is provided with indoor environment temperature sensor 10 and indoor heat exchanger temperature sensor 9; When the temperature sensor more than one of them broke down, convertible frequency air-conditioner can move by following control method:
When 1) the indoor environment temperature sensor breaks down:
Under refrigeration, dehumidifying or the air vent mode, the temperature that acquiescence indoor environment temperature sensor detects is 26 ℃; During heating mode, the temperature that acquiescence indoor environment temperature sensor detects is 24 ℃;
When automatic mode started down, the temperature that acquiescence indoor environment temperature sensor detects was 25 ℃;
If start, undertaken by above-mentioned pattern.
Environment temperature sensor fault in the display room simultaneously: this both shows can be in indoor demonstration, shows on the remote controller like the control panel of indoor set or indoor set, also can on off-premises station, show.Below identical.
Compressor operating frequency under the normal condition is that the variation according to indoor temperature and design temperature difference changes, and sees Fig. 3.
As shown in Figure 4, when the indoor environment temperature sensor broke down, the running frequency that is positioned at outdoor compressor was adjusted according to the difference of indoor design temperature and environment temperature, or increased or reduce.For example, when the indoor environment temperature sensor just often, the indoor temperature that the indoor environment temperature sensor detects is 28 ℃, the user's setting temperature is 25 ℃, then the running frequency of compressor is 70Hz; When the indoor environment temperature sensor breaks down; Then giving tacit consent to the indoor temperature that the indoor environment temperature sensor detects is 26 ℃, and user's temperature is set and still is 25 ℃, and its temperature approach becomes present 1 ℃ by previous 3 ℃; The running frequency of compressor becomes 50Hz automatically then according to the program requirement.
2) indoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 10 ℃ detects indoor environment temperature＜21 ℃, and indoor fan is forced to blow high wind, and with anti-freeze, temperature＜35 of sensing chamber's external heat exchanger ℃ are shut down and do not moved simultaneously, see Fig. 5;
During heating mode, start 3 minutes within, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 30 ℃, indoor fan blows low wind; After 3 minutes, detect indoor environment temperature >=20 ℃, indoor fan blows apoplexy, sees Fig. 6;
Heat overload protection, when outdoor heat exchange actuator temperature >=15 ℃, the highest frequency of compressor operating frequency is 50Hz, and when temperature >=20 of outdoor heat exchanger ℃, the highest frequency of compressor operating frequency is 40Hz;
Heat exchange temperature sensor fault in the while display room.
The high wind here is meant the high rotating speed operation that motor designs according to itself, and low wind is meant motor according to the slow-speed of revolution operation that itself designs, and each rotating speed of motor is different according to the actual conditions meeting;
3) outdoor environment temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor environment temperature sensor detects is 30 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves by refrigeration fan after 3 minutes and carries out;
The temperature that acquiescence outdoor environment temperature sensor detects during heating mode is 10 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves and carries out by heating blower fan after 3 minutes, sees Fig. 7;
During defrosting mode, outdoor heat exchange actuator temperature＜-6 ℃ continuous 3 minutes get into defrosting, running time be 45 minutes once, see Fig. 8;
While display room external environment temperature sensor fault.
4) outdoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 45 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature >=28 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
During heating mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 3 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature≤16 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
Refrigeration is during overload protection, and when outdoor environment temperature >=40 ℃, the highest frequency of compressor operating frequency is 60Hz; When outdoor environment temperature >=45 ℃, the highest frequency of compressor operating frequency is 45Hz, when outdoor environment temperature >=50 ℃; The highest frequency of compressor operating frequency is 35Hz, sees Fig. 9;
The processing of defrosting: when testing environment temperature >=10 ℃, do not defrost, otherwise handle by fixed machine frequently, defrosting in 45 minutes once, be 5 minutes post-set time.Heat and do not adjust continuous time, see Figure 10;
While display room external heat exchanger temperature sensor fault.
The frequency machine of deciding here is meant common air-conditioning, and the non-frequency machine is promptly handled by the processing mode of common air-conditioning;
5) compressor exhaust temperature sensor fault:
When the compressor exhaust temperature sensor fault occurring, the temperature that acquiescence compressor exhaust temperature sensor detects is 80 ℃;
Refrigeration or dehumidification mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of indoor environment temperature and indoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency, see Figure 11;
Heating mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of outdoor environment temperature and outdoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency, see Figure 12;
After detecting protector tripping once, no longer restart because of compressor;
Show the compressor exhaust temperature sensor fault simultaneously.
6) indoor environment temperature sensor and outdoor environment temperature sensor all break down:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor environment temperature sensor fault, just carry out according to each self-corresponding flow chart.
In turn environment temperature sensor and outdoor environment temperature sensor fault in the display room.
7) indoor environment temperature sensor and outdoor heat exchanger temperature sensor fault:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor heat exchanger temperature sensor fault, just carry out, but the compressor operating frequency is selected with minimum control the in the two according to each self-corresponding flow chart;
In turn environment temperature sensor and outdoor heat exchanger temperature sensor fault in the display room.
8) indoor environment temperature sensor and compressor exhaust temperature sensor fault:
Control respectively according to indoor environment temperature sensor fault and compressor exhaust temperature sensor fault, respectively according to each self-corresponding flow chart operation, but the compressor operating frequency is selected with minimum control the in the two;
In turn environment temperature sensor and compressor exhaust temperature sensor fault in the display room.
9) when other temperature sensor faults that make up more than two occurring, do not allow operation.
Claims (1)
1. the control method of a convertible frequency air-conditioner; Convertible frequency air-conditioner comprises compressor (1), four-way change-over valve (3), outdoor heat exchanger (6), outdoor fan (7), restricting element (8), indoor heat exchanger (11) and indoor fan (12); Air exit at compressor is provided with compressor exhaust temperature sensor (2); Outdoor heat exchanger is provided with outdoor environment temperature sensor (5) and outdoor heat exchanger temperature sensor (4); Indoor heat exchanger is provided with indoor environment temperature sensor (10) and indoor heat exchanger temperature sensor (9), it is characterized in that when the temperature sensor more than one of them breaks down, and convertible frequency air-conditioner can move by following control method:
When 1) the indoor environment temperature sensor breaks down:
Under refrigeration, dehumidifying or the air vent mode, the temperature that acquiescence indoor environment temperature sensor detects is 26 ℃;
During heating mode, the temperature that acquiescence indoor environment temperature sensor detects is 24 ℃;
When automatic mode started down, the temperature that acquiescence indoor environment temperature sensor detects was 25 ℃;
During by above-mentioned mode operation, environment temperature sensor fault in the display room simultaneously;
2) indoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 10 ℃ detects indoor environment temperature＜21 ℃, and indoor fan is forced to blow high wind, and with anti-freeze, temperature＜35 of sensing chamber's external heat exchanger ℃ are shut down and do not moved simultaneously;
During heating mode, start 3 minutes within, the temperature that acquiescence indoor heat exchanger temperature sensor detects is 30 ℃, indoor fan blows low wind; After 3 minutes, detect indoor environment temperature >=20 ℃, indoor fan blows apoplexy;
Heat overload protection, when outdoor heat exchange actuator temperature >=15 ℃, the highest frequency of compressor operating frequency is 50Hz, and when temperature >=20 of outdoor heat exchanger ℃, the highest frequency of compressor operating frequency is 40Hz; During by above-mentioned mode operation, heat exchange temperature sensor fault in the display room simultaneously;
3) outdoor environment temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor environment temperature sensor detects is 30 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves by refrigeration fan after 3 minutes and carries out;
The temperature that acquiescence outdoor environment temperature sensor detects during heating mode is 10 ℃, starts 3 minutes within, outdoor fan blows high wind, normally moves and carries out by heating blower fan after 3 minutes;
During defrosting mode, outdoor heat exchange actuator temperature＜-6 ℃ continuous 3 minutes get into defrosting, running time be 45 minutes once;
During by above-mentioned mode operation, display room external environment temperature sensor fault simultaneously;
4) outdoor heat exchanger temperature sensor fault:
Refrigeration or during dehumidification mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 45 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature >=28 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
During heating mode, the temperature that acquiescence outdoor heat exchanger temperature sensor detects is 3 ℃, starts 3 minutes testing environment temperature afterwards, if outdoor environment temperature≤16 ℃, outdoor fan blows high wind, otherwise outdoor fan blows low wind;
Refrigeration is during overload protection, and when outdoor environment temperature >=40 ℃, the highest frequency of compressor operating frequency is 60Hz; When outdoor environment temperature >=45 ℃; The highest frequency of compressor operating frequency is 45Hz, and when outdoor environment temperature >=50 ℃, the highest frequency of compressor operating frequency is 35Hz;
The processing of defrosting: when testing environment temperature >=10 ℃, do not defrost, otherwise handle by fixed machine frequently, defrosting in 45 minutes once, be 5 minutes post-set time; Heat and do not adjust continuous time;
During by above-mentioned mode operation, display room external heat exchanger temperature sensor fault simultaneously;
5) compressor exhaust temperature sensor fault:
When the compressor exhaust temperature sensor fault occurring, the temperature that acquiescence compressor exhaust temperature sensor detects is 80 ℃;
Refrigeration or dehumidification mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of indoor environment temperature and indoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; Heating mode: detect the compressor exhaust temperature sensor during startup and break down; Within starting 10 minutes; The temperature drop-out value that the indoor heat exchanger temperature sensor detects is no more than 3 ℃, judges to lack liquid, carries out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; If detect fault in the running after 10 minutes, detect the difference of outdoor environment temperature and outdoor heat exchanger TEMP actuator temperature, if less than 5 ℃, judge to lack liquid, carry out the highest 50Hz of being no more than that is restricted to of compressor operating frequency; After detecting protector tripping once, no longer restart because of compressor;
During by above-mentioned mode operation, show the compressor exhaust temperature sensor fault simultaneously;
6) indoor environment temperature sensor and outdoor environment temperature sensor all break down:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor environment temperature sensor fault;
During by above-mentioned mode operation, environment temperature sensor and outdoor environment temperature sensor fault in the display room in turn;
7) indoor environment temperature sensor and outdoor heat exchanger temperature sensor fault:
Control respectively according to above-mentioned indoor environment temperature sensor fault and outdoor heat exchanger temperature sensor fault, but the compressor operating frequency is selected with minimum control the in the two;
During by above-mentioned mode operation, environment temperature sensor and outdoor heat exchanger temperature sensor fault in the display room in turn;
8) indoor environment temperature sensor and compressor exhaust temperature sensor fault:
Control respectively according to indoor environment temperature sensor fault and compressor exhaust temperature sensor fault, respectively according to each self-corresponding flow chart operation, but the compressor operating frequency is selected with minimum control the in the two;
During by above-mentioned mode operation, environment temperature sensor and compressor exhaust temperature sensor fault in the display room in turn;
9) when other temperature sensor faults that make up more than two occurring, do not allow operation.
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| CN2010101167329A CN101788179B (en) | 2010-02-23 | 2010-02-23 | Control method of variable frequency air conditioner |
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| CN2010101167329A CN101788179B (en) | 2010-02-23 | 2010-02-23 | Control method of variable frequency air conditioner |
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2010
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Application publication date: 20100728 Assignee: Galanz (Zhongshan) home appliance Co., Ltd. Assignor: Guangdong Calandz Group Corp. Contract record no.: 2014440000481 Denomination of invention: Control method of frequency conversion air conditioner Granted publication date: 20120620 License type: Exclusive License Record date: 20141205 |
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