CN104896669B - Air conditioner and its protection control method - Google Patents
Air conditioner and its protection control method Download PDFInfo
- Publication number
- CN104896669B CN104896669B CN201510304874.0A CN201510304874A CN104896669B CN 104896669 B CN104896669 B CN 104896669B CN 201510304874 A CN201510304874 A CN 201510304874A CN 104896669 B CN104896669 B CN 104896669B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- temperature
- heat exchanger
- preset
- equal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of protection control method of air conditioner and with its air conditioner, the protection control method of the air conditioner includes the following steps：Detect the delivery temperature Tp of compressor in air conditioner；When judging that air conditioner meets preset condition according to delivery temperature Tp, judge that the exhaust gas temperature sensor of detection delivery temperature Tp in air conditioner is got loose；When judging that exhaust gas temperature sensor is got loose, protection control is carried out to air conditioner according to the operational mode that delivery temperature Tp and air conditioner are presently in.The guard method can accurate judgement exhaust gas temperature sensor whether get loose, and protection control is carried out to air conditioner when judging that exhaust gas temperature sensor is got loose, so as to ensure air conditioner reliability service.
Description
Technical field
The present invention relates to air conditioner technical field, the protection control method of more particularly to a kind of air conditioner and a kind of air-conditioning
Device.
Background technology
Temperature sensor is the premise and guarantee, particularly exhaust gas temperature sensor that air conditioner realizes intelligent operation,
The delivery temperature of detection directly affects the accurate control of electric expansion valve in air conditioner.If exhaust sensor is in transport or air-conditioning
Device loosens when manufacturing, and it will cause air conditioner operation exceptions.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose be propose one kind can accurate judgement exhaust gas temperature sensor whether get loose, and judging delivery temperature biography
The protection control method of the air conditioner of protection control is carried out when sensor is got loose to air conditioner.
It is another object of the present invention to propose a kind of air conditioner.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of protection control method of air conditioner, including
Following steps：Detect the delivery temperature Tp of compressor in the air conditioner；The air conditioner is judged according to the delivery temperature Tp
When meeting preset condition, the exhaust gas temperature sensor for judging to detect the delivery temperature Tp in the air conditioner is got loose；
When judging that the exhaust gas temperature sensor is got loose, the operation that is presently according to the delivery temperature Tp and the air conditioner
Pattern carries out protection control to the air conditioner.
The protection control method of air conditioner according to embodiments of the present invention detects the exhaust temperature of compressor in air conditioner in real time
Tp is spent, judges whether air conditioner meets preset condition according to delivery temperature Tp, if air conditioner meets preset condition, judges sky
The exhaust gas temperature sensor of detection delivery temperature Tp in device is adjusted to get loose, and is got loose in judgement exhaust gas temperature sensor
When, protection control is carried out to air conditioner according to the operational mode that delivery temperature Tp and air conditioner are presently in.Therefore, the present invention is real
Apply the air conditioner of example protection control method can accurate judgement exhaust gas temperature sensor whether get loose, and judge be vented
Protection control is carried out to air conditioner when temperature sensor is got loose, effectively prevent air conditioner due to exhaust gas temperature sensor loosens
Cause to run it is not normal, so as to ensure air conditioner reliability service.
According to one embodiment of present invention, when the delivery temperature Tp meets the following conditions, judge the air conditioner
Meet the preset condition：(1) the delivery temperature Tp is less than or equal to after first preset time of compressor normal operation
The sum of outdoor environment temperature T4 and the first temperature threshold；(2) the delivery temperature Tp when air conditioner is run in a chiller mode
Less than or equal to the medium temperature T3 of outdoor heat exchanger；(3) condition (1) and condition (2) and meanwhile meet and continue second it is default when
Between.
According to another embodiment of the invention, when the delivery temperature Tp meets the following conditions, judge the air-conditioning
Device meets the preset condition：(1) the delivery temperature Tp is less than or waits after first preset time of compressor normal operation
In the sum of outdoor environment temperature T4 and the first temperature threshold；(2) delivery temperature when air conditioner is run with heating mode
Tp is less than or equal to the medium temperature T2 of indoor heat exchanger；(3) condition (1) and condition (2) while meet and to continue second default
Time.
According to one embodiment of present invention, when judging that the exhaust gas temperature sensor is got loose, also described in display
The fault type of air conditioner.
According to one embodiment of present invention, the operation mould being presently according to the delivery temperature Tp and the air conditioner
Formula carries out protection control to the air conditioner, specifically includes：When the operational mode that the air conditioner is presently in is refrigeration mode
Or during dehumidification mode, wherein, if the medium temperature T3 of outdoor heat exchanger be less than or equal to the first preset temperature, control described in
Electric expansion valve in air conditioner is run with the first aperture；It is default that if the medium temperature T3 of outdoor heat exchanger is more than described first
Temperature and less than the second preset temperature, then control the electric expansion valve in the air conditioner to be run with the second aperture, and described second
Aperture is more than first aperture；If the medium temperature T3 of outdoor heat exchanger is greater than or equal to second preset temperature,
The electric expansion valve in the air conditioner is controlled to be run with maximum opening.
According to another embodiment of the invention, the operation being presently according to the delivery temperature Tp and the air conditioner
Pattern carries out protection control to the air conditioner, specifically includes：When the operational mode that the air conditioner is presently in is heating mould
During formula, wherein, if the medium temperature T2 of indoor heat exchanger is less than or equal to third preset temperature, control in the air conditioner
Electric expansion valve with third aperture run；If the medium temperature T2 of indoor heat exchanger is more than the third preset temperature and small
In the 4th preset temperature, then the electric expansion valve in the air conditioner is controlled to be run with the 4th aperture, the 4th aperture is more than
The third aperture；If the medium temperature T2 of indoor heat exchanger be greater than or equal to the 4th preset temperature, control described in
Electric expansion valve in air conditioner is run with maximum opening.
According to one embodiment of present invention, when the air conditioner meets following either condition, the air conditioner exits
Protection control：(1) air conditioner is in a chiller mode or dehumidification mode is run, and the delivery temperature Tp is greater than or equal to outdoor
The sum of the medium temperature T3 of heat exchanger and second temperature threshold value；(2) air conditioner is run with heating mode, and the exhaust temperature
It spends Tp and is greater than or equal to the sum of medium temperature T2 and third temperature threshold of indoor heat exchanger；(3) the delivery temperature Tp is more than
Or equal to preset temperature protection threshold value.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of air conditioner, including：Compressor；It is outdoor
Heat exchanger；Indoor heat exchanger；Exhaust gas temperature sensor, for detecting the delivery temperature Tp of the compressor；First temperature sensing
Device, for detecting outdoor environment temperature T4；Second temperature sensor, for detecting the medium temperature T3 of the outdoor heat exchanger；
Third temperature sensor, for detecting the medium temperature T2 of the indoor heat exchanger；Control module, for according to the exhaust temperature
When degree Tp judges that the air conditioner meets preset condition, judge that the exhaust gas temperature sensor is got loose, and described in judgement
When exhaust gas temperature sensor is got loose, the control module is presently according to the delivery temperature Tp and the air conditioner
Operational mode carries out protection control to the air conditioner.
Air conditioner according to embodiments of the present invention, control module judge that air conditioner meets preset condition according to delivery temperature Tp
When, judgement exhaust gas temperature sensor is got loose, and when judging that exhaust gas temperature sensor is got loose, control module is according to row
The operational mode that temperature degree Tp and air conditioner are presently in carries out protection control to air conditioner.Therefore, the sky of the embodiment of the present invention
Adjust device can accurate judgement exhaust gas temperature sensor whether get loose, and when judging that exhaust gas temperature sensor is got loose oneself
It is dynamic to carry out protection control, effectively prevent causing to run due to exhaust gas temperature sensor loosens it is not normal, so as to ensure reliability service.
According to one embodiment of present invention, when the delivery temperature Tp meets the following conditions, the control module is sentenced
The air conditioner that breaks meets the preset condition：(1) delivery temperature after first preset time of compressor normal operation
Tp is less than or equal to the sum of outdoor environment temperature T4 and the first temperature threshold；(2) air conditioner runs when institute in a chiller mode
State the medium temperature T3 that delivery temperature Tp is less than or equal to outdoor heat exchanger；(3) condition (1) and condition (2) and meanwhile meet and hold
Continuous second preset time.
According to another embodiment of the invention, when the delivery temperature Tp meets the following conditions, the control module
Judge that the air conditioner meets the preset condition：(1) the exhaust temperature after first preset time of compressor normal operation
It spends Tp and is less than or equal to the sum of outdoor environment temperature T4 and the first temperature threshold；(2) when the air conditioner is run with heating mode
The delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger；(3) condition (1) and condition (2) and meanwhile meet and
Continue the second preset time.
According to one embodiment of present invention, above-mentioned air conditioner further includes display module, and the display module is used for
The control module judges to show the fault type of the air conditioner when exhaust gas temperature sensor is got loose.
According to one embodiment of present invention, when the operational mode that the air conditioner is presently in is refrigeration mode or dehumidifying
During pattern, wherein, if the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, control module if, is controlled
The electric expansion valve in the air conditioner is made to run with the first aperture；If the medium temperature T3 of outdoor heat exchanger is more than described the
One preset temperature and less than the second preset temperature, the control module then controls the electric expansion valve in the air conditioner with second
Aperture is run, and second aperture is more than first aperture；If the medium temperature T3 of outdoor heat exchanger is greater than or equal to institute
The second preset temperature is stated, the control module then controls the electric expansion valve in the air conditioner to be run with maximum opening.
According to another embodiment of the invention, when the operational mode that the air conditioner is presently in is heating mode,
Wherein, if the medium temperature T2 of indoor heat exchanger is less than or equal to third preset temperature, control module if, controls described
Electric expansion valve in air conditioner is run with third aperture；If the medium temperature T2 of indoor heat exchanger is preset more than the third
Temperature and less than the 4th preset temperature, the control module then controls the electric expansion valve in the air conditioner to be transported with the 4th aperture
Row, the 4th aperture are more than the third aperture；If the medium temperature T2 of indoor heat exchanger is greater than or equal to the described 4th
Preset temperature, the control module then control the electric expansion valve in the air conditioner to be run with maximum opening.
According to one embodiment of present invention, when the air conditioner meets following either condition, the air conditioner exits
Protection control：(1) air conditioner is in a chiller mode or dehumidification mode is run, and the delivery temperature Tp is greater than or equal to outdoor
The sum of the medium temperature T3 of heat exchanger and second temperature threshold value；(2) air conditioner is run with heating mode, and the exhaust temperature
It spends Tp and is greater than or equal to the sum of medium temperature T2 and third temperature threshold of indoor heat exchanger；(3) the delivery temperature Tp is more than
Or equal to preset temperature protection threshold value.
Description of the drawings
Fig. 1 is the flow chart of the protection control method of the air conditioner proposed according to embodiments of the present invention.
Fig. 2 is the block diagram of air conditioner according to embodiments of the present invention.
Reference numeral：Compressor 10, outdoor heat exchanger 20, indoor heat exchanger 30, exhaust gas temperature sensor 40, the first temperature
Sensor 50, second temperature sensor 60, third temperature sensor 70, control module 80 and display module 90.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The protection control method of the air conditioner proposed according to embodiments of the present invention and air-conditioning described with reference to the accompanying drawings
Device.
Fig. 1 is the flow chart of the protection control method of the air conditioner proposed according to embodiments of the present invention.It as shown in Figure 1, should
The protection control method of air conditioner includes the following steps：
S1 detects the delivery temperature Tp of compressor in air conditioner.
For example, the delivery temperature Tp of compressor can be detected by exhaust gas temperature sensor.
S2 when judging that air conditioner meets preset condition according to delivery temperature Tp, judges detection delivery temperature Tp in air conditioner
Exhaust gas temperature sensor get loose.
According to one embodiment of present invention, when delivery temperature Tp meets the following conditions, it is default to judge that air conditioner meets
Condition：(1) the first preset time of compressor normal operation final vacuum temperature Tp is less than or equal to outdoor environment temperature T4 and first
The sum of temperature threshold；(2) delivery temperature Tp is less than or equal to the intermediate temperature of outdoor heat exchanger when air conditioner is run in a chiller mode
Spend T3；(3) condition (1) and condition (2) while meet and continue the second preset time.
Wherein, the first preset time, the second preset time and the first temperature threshold can be demarcated according to actual conditions,
For example, the first preset time can be 10min, the second preset time can be 5min, and the first temperature threshold can be 2 DEG C.
According to another embodiment of the invention, when delivery temperature Tp meets the following conditions, it is pre- to judge that air conditioner meets
If condition：(1) the first preset time of compressor normal operation final vacuum temperature Tp is less than or equal to outdoor environment temperature T4 and the
The sum of one temperature threshold；(2) delivery temperature Tp is less than or equal to the centre of indoor heat exchanger when air conditioner is run with heating mode
Temperature T2；(3) condition (1) and condition (2) while meet and continue the second preset time.
Briefly, when delivery temperature Tp meets following three conditions simultaneously, you can detect exhaust in judgement air conditioner
The exhaust gas temperature sensor of temperature Tp is got loose.
Condition one in compressor normal boot-strap and after running the first preset time such as 10min, is compressed in the air conditioner of detection
Tp≤T4+2 DEG C of the delivery temperature of machine.
Condition two, when air conditioner is in refrigeration mode, delivery temperature Tp≤T3 of compressor in the air conditioner of detection；And
When air conditioner is in heating mode, delivery temperature Tp≤T2 of compressor in the air conditioner of detection.
Condition three, while meet condition one and condition two, and continue more than 5min.
S3, when judging that exhaust gas temperature sensor is got loose, the fortune that is presently according to delivery temperature Tp and air conditioner
Row pattern carries out protection control to air conditioner.
According to one embodiment of present invention, when judging that exhaust gas temperature sensor is got loose, air conditioner is also shown
Fault type.For example, fault type can use " EE " to represent.
According to one embodiment of present invention, the operational mode being presently according to delivery temperature Tp and air conditioner is to air-conditioning
Device carries out protection control, specifically includes：When the operational mode that air conditioner is presently in is refrigeration mode or dehumidification mode,
In, if the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, control the electronic expansion in air conditioner
Valve is run with the first aperture；If the medium temperature T3 of outdoor heat exchanger is more than the first preset temperature and less than the second default temperature
Degree, then control the electric expansion valve in air conditioner to be run with the second aperture, and the second aperture is more than the first aperture；If outdoor heat exchange
The medium temperature T3 of device is greater than or equal to the second preset temperature, then the electric expansion valve in air conditioner is controlled to be transported with maximum opening
Row.
Wherein, the first preset temperature, the second preset temperature, the first aperture and the second aperture can be carried out according to actual conditions
Calibration, for example, the first preset temperature can be 45 DEG C, the second preset temperature can be 50 DEG C, and the first aperture can be PDC (systems
Cold basic valve step)+50, the second aperture can be PDC+100.
According to another embodiment of the invention, the operational mode being presently according to delivery temperature Tp and air conditioner is to sky
Device is adjusted to carry out protection control, is specifically included：When the operational mode that air conditioner is presently in is heating mode, wherein, if room
The medium temperature T2 of interior heat exchanger is less than or equal to third preset temperature, then the electric expansion valve in air conditioner is controlled to be opened with third
Degree operation；If the medium temperature T2 of indoor heat exchanger is more than third preset temperature and less than the 4th preset temperature, sky is controlled
The electric expansion valve in device is adjusted to be run with the 4th aperture, the 4th aperture is more than third aperture；If the intermediate temperature of indoor heat exchanger
It spends T2 and is greater than or equal to the 4th preset temperature, then the electric expansion valve in air conditioner is controlled to be run with maximum opening.
Wherein, third preset temperature, the 4th preset temperature, third aperture and the 4th aperture can be carried out according to actual conditions
Calibration, for example, third preset temperature can be 40 DEG C, the 4th preset temperature can be 50 DEG C, and third aperture can be PDH (systems
This valve of hot radical step) -50, the 4th aperture can be PDH.
Specifically, when judging that exhaust gas temperature sensor is got loose, indoor unit shows failure classes by display module
Type " EE ", to remind user.Meanwhile air conditioner without shutting is run, i.e., according to the medium temperature T3 of outdoor heat exchanger or
The operational mode that the medium temperature T2 and air conditioner of person's indoor heat exchanger are presently in such as refrigeration mode, heating mode and dehumidifying mould
Formula carries out protection control to air conditioner.
When air conditioner is in refrigeration mode or during dehumidification mode, if T3≤45 DEG C, controls the electronics in air conditioner swollen
Swollen valve is run with the first aperture such as PDC+50；If 45 DEG C of ＜ T3≤50 DEG C, the electric expansion valve in air conditioner is controlled with
Two apertures such as PDC+100 is run；If 50 DEG C of T3 ＞, control the electric expansion valve in air conditioner to be run with maximum opening.
When air conditioner is in heating mode, if T2≤40 DEG C, the electric expansion valve in air conditioner is controlled with third
Aperture such as PDH-50 is run；If 40 DEG C of ＜ T2≤50 DEG C, the electric expansion valve in air conditioner is controlled with the 4th aperture such as PDH
Operation；If 50 DEG C of T2 ＞, control the electric expansion valve in air conditioner to be run with maximum opening.
According to one embodiment of present invention, when air conditioner meets following either condition, air conditioner exits protection control：
(1) air conditioner is in a chiller mode or dehumidification mode is run, and delivery temperature Tp is greater than or equal to the medium temperature of outdoor heat exchanger
The sum of T3 and second temperature threshold value；(2) air conditioner is run with heating mode, and delivery temperature Tp is greater than or equal to indoor heat exchanger
Medium temperature T2 and the sum of third temperature threshold；(3) delivery temperature Tp is greater than or equal to preset temperature protection threshold value.
Wherein, second temperature threshold value, third temperature threshold and temperature protection threshold value can be demarcated according to actual conditions,
For example, second temperature threshold value can be 20 DEG C, third temperature threshold can be 15 DEG C.
That is, when air conditioner is in refrigeration mode or during dehumidification mode, if Tp >=T3+20 DEG C of delivery temperature,
Air conditioner exits protection control；Or when air conditioner is in heating mode, if Tp >=T2+15 DEG C of delivery temperature, air-conditioning
Device exits protection control；Or there is a delivery temperature mistake in delivery temperature Tp >=preset temperature protection threshold value, i.e. air conditioner
During height protection, air conditioner exits protection control.
In conclusion the protection control method of air conditioner according to embodiments of the present invention, detects compressed in air conditioner in real time
The delivery temperature Tp of machine judges whether air conditioner meets preset condition according to delivery temperature Tp, if air conditioner meets default item
Part, the then exhaust gas temperature sensor for judging to detect delivery temperature Tp in air conditioner are got loose, and in judgement delivery temperature sensing
When device is got loose, protection control is carried out to air conditioner according to the operational mode that delivery temperature Tp and air conditioner are presently in.Cause
This, the protection control method of the air conditioner of the embodiment of the present invention can accurate judgement exhaust gas temperature sensor whether get loose,
And protection control is carried out to air conditioner when judging that exhaust gas temperature sensor is got loose, air conditioner is effectively prevent because of delivery temperature
Sensor loosen and cause to run it is not normal, so as to ensure air conditioner reliability service.
Fig. 2 is the block diagram of air conditioner according to embodiments of the present invention.As shown in Fig. 2, the air conditioner includes compression
Machine 10, outdoor heat exchanger 20, indoor heat exchanger 30, exhaust gas temperature sensor 40, the first temperature sensor 50, second temperature sensing
Device 60, third temperature sensor 70 and control module 80.
Wherein, exhaust gas temperature sensor 40 is used to detect the delivery temperature Tp of compressor 10, and the first temperature sensor 50 is used
In detection outdoor environment temperature T4, second temperature sensor 60 is used to detect the medium temperature T3 of outdoor heat exchanger 20, third temperature
Degree sensor 70 is used to detect the medium temperature T2 of indoor heat exchanger 30, and control module 80 is used to be judged according to delivery temperature Tp empty
When tune device meets preset condition, judgement exhaust gas temperature sensor 40 is got loose, and is occurred in judgement exhaust gas temperature sensor 40
When loosening, control module 80 carries out protection control according to the operational mode that delivery temperature Tp and air conditioner are presently in air conditioner
System.
According to one embodiment of present invention, when delivery temperature Tp meets the following conditions, control module 80 judges air-conditioning
Device meets preset condition：(1) 10 normal operation the first preset time final vacuum temperature Tp of compressor is less than or equal to outdoor environment
The sum of temperature T4 and the first temperature threshold；(2) delivery temperature Tp is changed less than or equal to outdoor when air conditioner is run in a chiller mode
The medium temperature T3 of hot device 20；(3) condition (1) and condition (2) while meet and continue the second preset time.
Wherein, the first preset time can be 10min, and the second preset time can be 5min, and the first temperature threshold can be with
It is 2 DEG C.
According to another embodiment of the invention, when delivery temperature Tp meets the following conditions, control module 80 judges sky
Device is adjusted to meet preset condition：(1) 10 normal operation the first preset time final vacuum temperature Tp of compressor is less than or equal to outdoor ring
The sum of border temperature T4 and the first temperature threshold；(2) delivery temperature Tp is less than or equal to interior when air conditioner is run with heating mode
The medium temperature T2 of heat exchanger 30；(3) condition (1) and condition (2) while meet and continue the second preset time.
Briefly, when delivery temperature Tp meets following three conditions simultaneously, control module 80 can determine that air conditioner
The exhaust gas temperature sensor 40 of middle detection delivery temperature Tp is got loose.
Condition one, in 10 normal boot-strap of compressor and after running the first preset time such as 10min, exhaust gas temperature sensor 40
Tp≤T4+2 DEG C of the delivery temperature of compressor in the air conditioner of detection.
Condition two, when air conditioner is in refrigeration mode, compressor in the air conditioner that exhaust gas temperature sensor 40 detects
Delivery temperature Tp≤T3；And when air conditioner is in heating mode, compressor in the air conditioner that exhaust gas temperature sensor 40 detects
Delivery temperature Tp≤T2.
Condition three, while meet condition one and condition two, and continue more than 5min.
According to one embodiment of present invention, as shown in Fig. 2, above-mentioned air conditioner further includes display module 90, mould is shown
Block 90 is used to show the fault type of air conditioner when control module 80 judges that exhaust gas temperature sensor 40 is got loose.
According to one embodiment of present invention, when the operational mode that air conditioner is presently in is refrigeration mode or dehumidification mode
When, wherein, if the medium temperature T3 of outdoor heat exchanger 20 is less than or equal to the first preset temperature, control module 80 ifs, controls sky
The electric expansion valve in device is adjusted to be run with the first aperture；If the medium temperature T3 of outdoor heat exchanger 20 is more than the first preset temperature
And less than the second preset temperature, control module 80 then controls the electric expansion valve in air conditioner to be run with the second aperture, and second opens
Degree is more than the first aperture；If the medium temperature T3 of outdoor heat exchanger 20 is greater than or equal to the second preset temperature, control module 80
The electric expansion valve in air conditioner is then controlled to be run with maximum opening.
Wherein, the first preset temperature can be 45 DEG C, and the second preset temperature can be 50 DEG C, and the first aperture can be PDC+
50, the second aperture can be PDC+100.
According to another embodiment of the invention, when the operational mode that air conditioner is presently in is heating mode, wherein,
If the medium temperature T2 of indoor heat exchanger 30 is less than or equal to third preset temperature, control module 80 ifs, is controlled in air conditioner
Electric expansion valve is run with third aperture；If the medium temperature T2 of indoor heat exchanger 30 is more than third preset temperature and less than the
Four preset temperatures, control module 80 then control the electric expansion valve in air conditioner to be run with the 4th aperture, and the 4th aperture is more than the
Three apertures；If the medium temperature T2 of indoor heat exchanger 30 is greater than or equal to the 4th preset temperature, control module 80 ifs, controls sky
The electric expansion valve in device is adjusted to be run with maximum opening.
Wherein, third preset temperature can be 40 DEG C, and the 4th preset temperature can be 50 DEG C, and third aperture can be PDH-
50, the 4th aperture can be PDH.
Specifically, when control module 80 judges that exhaust gas temperature sensor 40 is got loose, indoor unit is by showing mould
Block 90 shows fault type " EE ", to remind user.Meanwhile air conditioner without shutting is run, i.e., according to outdoor heat exchanger
The operational mode that 20 medium temperature T3 or the medium temperature T2 and air conditioner of indoor heat exchanger 30 are presently in such as is freezed mould
Formula, heating mode and dehumidification mode carry out protection control to air conditioner.
When air conditioner is in refrigeration mode or during dehumidification mode, if T3≤45 DEG C, control module 80 controls air conditioner
In electric expansion valve with the first aperture such as PDC+50 run；If 45 DEG C of ＜ T3≤50 DEG C, control module 80 controls air-conditioning
Electric expansion valve in device is run with the second aperture such as PDC+100；If 50 DEG C of T3 ＞, control module 80 is controlled in air conditioner
Electric expansion valve run with maximum opening.
When air conditioner is in heating mode, if T2≤40 DEG C, control module 80 controls the electronics in air conditioner swollen
Swollen valve is run with third aperture such as PDH-50；If 40 DEG C of ＜ T2≤50 DEG C, control module 80 controls the electronics in air conditioner
Expansion valve is run with the 4th aperture such as PDH；If 50 DEG C of T2 ＞, control module 80 control air conditioner in electric expansion valve with
Maximum opening is run.
According to one embodiment of present invention, when air conditioner meets following either condition, air conditioner exits protection control：
(1) air conditioner is in a chiller mode or dehumidification mode is run, and delivery temperature Tp is greater than or equal to the intermediate temperature of outdoor heat exchanger 20
Spend the sum of T3 and second temperature threshold value；(2) air conditioner is run with heating mode, and delivery temperature Tp is greater than or equal to indoor heat exchange
The sum of medium temperature T2 and third temperature threshold of device 30；(3) delivery temperature Tp is greater than or equal to preset temperature protection threshold value.
Wherein, second temperature threshold value can be 20 DEG C, and third temperature threshold can be 15 DEG C.
That is, when air conditioner is in refrigeration mode or during dehumidification mode, if Tp >=T3+20 DEG C of delivery temperature,
Air conditioner exits protection control；Or when air conditioner is in heating mode, if Tp >=T2+15 DEG C of delivery temperature, air-conditioning
Device exits protection control；Or there is a delivery temperature mistake in delivery temperature Tp >=preset temperature protection threshold value, i.e. air conditioner
During height protection, air conditioner exits protection control.
Air conditioner according to embodiments of the present invention, control module judge that air conditioner meets preset condition according to delivery temperature Tp
When, judgement exhaust gas temperature sensor is got loose, and when judging that exhaust gas temperature sensor is got loose, control module is according to row
The operational mode that temperature degree Tp and air conditioner are presently in carries out protection control to air conditioner.Therefore, the sky of the embodiment of the present invention
Adjust device can accurate judgement exhaust gas temperature sensor whether get loose, and when judging that exhaust gas temperature sensor is got loose oneself
It is dynamic to carry out protection control, effectively prevent causing to run due to exhaust gas temperature sensor loosens it is not normal, so as to ensure reliability service.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature right over second feature or oblique upper or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments or examples described in this specification and the feature of different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (12)
1. the protection control method of a kind of air conditioner, which is characterized in that include the following steps：
Detect the delivery temperature Tp of compressor in the air conditioner；
When judging that the air conditioner meets preset condition according to the delivery temperature Tp, judge to detect the row in the air conditioner
The exhaust gas temperature sensor of temperature degree Tp is got loose；
When judging that the exhaust gas temperature sensor is got loose, worked as according to the medium temperature of outdoor heat exchanger and the air conditioner
Preceding residing operational mode carries out protection control to the air conditioner, wherein, according to the medium temperature of outdoor heat exchanger and described
The operational mode that air conditioner is presently in carries out protection control to the air conditioner, specifically includes：When the current institute of the air conditioner
When the operational mode at place is refrigeration mode or dehumidification mode, if the medium temperature T3 of outdoor heat exchanger is less than or equal to first in advance
If temperature, then the electric expansion valve in the air conditioner is controlled to be run with the first aperture；If the medium temperature of outdoor heat exchanger
T3 is more than first preset temperature and less than the second preset temperature, then controls the electric expansion valve in the air conditioner with second
Aperture is run, and second aperture is more than first aperture；If the medium temperature T3 of outdoor heat exchanger is greater than or equal to institute
The second preset temperature is stated, then the electric expansion valve in the air conditioner is controlled to be run with maximum opening.
2. the protection control method of air conditioner according to claim 1, which is characterized in that when the delivery temperature Tp meets
During the following conditions, judge that the air conditioner meets the preset condition：
(1) the delivery temperature Tp is less than or equal to outdoor environment temperature T4 after first preset time of compressor normal operation
The sum of with the first temperature threshold；
(2) the delivery temperature Tp is less than or equal to the medium temperature of outdoor heat exchanger when the air conditioner is run in a chiller mode
T3；
(3) condition (1) and condition (2) while meet and continue the second preset time.
3. the protection control method of air conditioner according to claim 1, which is characterized in that when the delivery temperature Tp meets
During the following conditions, judge that the air conditioner meets the preset condition：
(1) the delivery temperature Tp is less than or equal to outdoor environment temperature T4 after first preset time of compressor normal operation
The sum of with the first temperature threshold；
(2) the delivery temperature Tp is less than or equal to the medium temperature of indoor heat exchanger when the air conditioner is run with heating mode
T2；
(3) condition (1) and condition (2) while meet and continue the second preset time.
4. the protection control method of air conditioner according to any one of claim 1-3, which is characterized in that described in judgement
When exhaust gas temperature sensor is got loose, the fault type of the air conditioner is also shown.
5. the protection control method of air conditioner according to any one of claim 1-3, which is characterized in that changed according to outdoor
The operational mode that the medium temperature of hot device and the air conditioner are presently in carries out protection control to the air conditioner, specific to wrap
It includes：
When the operational mode that the air conditioner is presently in is heating mode, wherein,
If the medium temperature T2 of indoor heat exchanger is less than or equal to third preset temperature, the electronics in the air conditioner is controlled
Expansion valve is run with third aperture；
If the medium temperature T2 of indoor heat exchanger is more than the third preset temperature and less than the 4th preset temperature, institute is controlled
It states the electric expansion valve in air conditioner to run with the 4th aperture, the 4th aperture is more than the third aperture；
If the medium temperature T2 of indoor heat exchanger is greater than or equal to the 4th preset temperature, control in the air conditioner
Electric expansion valve is run with maximum opening.
6. the protection control method of air conditioner according to claim 1, which is characterized in that below the air conditioner meets
During either condition, the air conditioner exits protection control：
(1) air conditioner is in a chiller mode or dehumidification mode is run, and the delivery temperature Tp is greater than or equal to outdoor heat exchange
The sum of the medium temperature T3 of device and second temperature threshold value；
(2) air conditioner is run with heating mode, and the delivery temperature Tp is greater than or equal to the intermediate temperature of indoor heat exchanger
Spend the sum of T2 and third temperature threshold；
(3) the delivery temperature Tp is greater than or equal to preset temperature protection threshold value.
7. a kind of air conditioner, which is characterized in that including：
Compressor；
Outdoor heat exchanger；
Indoor heat exchanger；
Exhaust gas temperature sensor, for detecting the delivery temperature Tp of the compressor；
First temperature sensor, for detecting outdoor environment temperature T4；
Second temperature sensor, for detecting the medium temperature T3 of the outdoor heat exchanger；
Third temperature sensor, for detecting the medium temperature T2 of the indoor heat exchanger；
Control module during for judging that the air conditioner meets preset condition according to the delivery temperature Tp, judges the exhaust
Temperature sensor is got loose, and when judging that the exhaust gas temperature sensor is got loose, the control module is according to outdoor
The operational mode that the medium temperature of heat exchanger and the air conditioner are presently in carries out protection control to the air conditioner, wherein,
When the operational mode that the air conditioner is presently in is refrigeration mode or dehumidification mode, if the medium temperature of outdoor heat exchanger
T3 is less than or equal to the first preset temperature, and the control module then controls the electric expansion valve in the air conditioner with the first aperture
Operation；If the medium temperature T3 of outdoor heat exchanger is more than first preset temperature and less than the second preset temperature, the control
Molding block then controls the electric expansion valve in the air conditioner to be run with the second aperture, and second aperture is opened more than described first
Degree；If the medium temperature T3 of outdoor heat exchanger is greater than or equal to second preset temperature, control module if, controls institute
The electric expansion valve stated in air conditioner is run with maximum opening.
8. air conditioner according to claim 7, which is characterized in that when the delivery temperature Tp meets the following conditions, institute
It states control module and judges that the air conditioner meets the preset condition：
(1) the delivery temperature Tp is less than or equal to outdoor environment temperature T4 after first preset time of compressor normal operation
The sum of with the first temperature threshold；
(2) the delivery temperature Tp is less than or equal to the medium temperature of outdoor heat exchanger when the air conditioner is run in a chiller mode
T3；
(3) condition (1) and condition (2) while meet and continue the second preset time.
9. air conditioner according to claim 7, which is characterized in that when the delivery temperature Tp meets the following conditions, institute
It states control module and judges that the air conditioner meets the preset condition：
(1) the delivery temperature Tp is less than or equal to outdoor environment temperature T4 after first preset time of compressor normal operation
The sum of with the first temperature threshold；
(2) the delivery temperature Tp is less than or equal to the medium temperature of indoor heat exchanger when the air conditioner is run with heating mode
T2；
(3) condition (1) and condition (2) while meet and continue the second preset time.
10. according to the air conditioner described in any one of claim 7-9, which is characterized in that further include display module, the display
Module is used to show the failure classes of the air conditioner when the control module judges that the exhaust gas temperature sensor is got loose
Type.
11. according to the air conditioner described in any one of claim 7-9, which is characterized in that be presently in when the air conditioner
When operational mode is heating mode, wherein,
If the medium temperature T2 of indoor heat exchanger is less than or equal to third preset temperature, control module if, controls the sky
The electric expansion valve in device is adjusted to be run with third aperture；
If the medium temperature T2 of indoor heat exchanger is more than the third preset temperature and less than the 4th preset temperature, the control
Module then controls the electric expansion valve in the air conditioner to be run with the 4th aperture, and the 4th aperture is opened more than the third
Degree；
If the medium temperature T2 of indoor heat exchanger is greater than or equal to the 4th preset temperature, control module if, controls institute
The electric expansion valve stated in air conditioner is run with maximum opening.
12. air conditioner according to claim 7, which is characterized in that when the air conditioner meets following either condition, institute
It states air conditioner and exits protection control：
(1) air conditioner is in a chiller mode or dehumidification mode is run, and the delivery temperature Tp is greater than or equal to outdoor heat exchange
The sum of the medium temperature T3 of device and second temperature threshold value；
(2) air conditioner is run with heating mode, and the delivery temperature Tp is greater than or equal to the intermediate temperature of indoor heat exchanger
Spend the sum of T2 and third temperature threshold；
(3) the delivery temperature Tp is greater than or equal to preset temperature protection threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304874.0A CN104896669B (en) | 2015-06-04 | 2015-06-04 | Air conditioner and its protection control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304874.0A CN104896669B (en) | 2015-06-04 | 2015-06-04 | Air conditioner and its protection control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104896669A CN104896669A (en) | 2015-09-09 |
| CN104896669B true CN104896669B (en) | 2018-07-10 |
Family
ID=54029494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304874.0A Active CN104896669B (en) | 2015-06-04 | 2015-06-04 | Air conditioner and its protection control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104896669B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023405A (en) * | 2019-10-30 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Failure detection method for outdoor air temperature sensor, readable storage medium and air conditioner |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257161B (en) * | 2016-07-27 | 2019-09-10 | 海信（山东）空调有限公司 | Cooler compressor Anti-burnout control method and air conditioner |
| CN107957122B (en) * | 2017-11-22 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Air conditioning system abnormity judgment method and device |
| CN108895606A (en) * | 2018-05-31 | 2018-11-27 | 四川长虹空调有限公司 | A kind of transducer air conditioning exhaust sensor dropping detection method and system |
| CN109442699B (en) * | 2018-11-06 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | The control method of machine valve in a kind of multi-online air-conditioning system |
| CN109724207B (en) * | 2018-12-04 | 2020-04-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN110260485B (en) * | 2019-06-19 | 2021-03-19 | 广东美的暖通设备有限公司 | Dehumidification control method and device for fan coil and computer readable storage medium |
| CN110469953B (en) * | 2019-08-26 | 2021-07-16 | 广东美的制冷设备有限公司 | Detection method for exhaust temperature sensor of air conditioner, air conditioner and medium |
| CN111024149B (en) * | 2019-10-29 | 2021-12-31 | 格力电器（合肥）有限公司 | Special outdoor unit detection method, computer readable storage medium and air conditioner |
| CN110864397A (en) * | 2019-11-29 | 2020-03-06 | 广东美的制冷设备有限公司 | Fixed-frequency air conditioner and protection method thereof |
| CN111059696B (en) * | 2019-12-03 | 2021-02-26 | 珠海格力电器股份有限公司 | Power module temperature detection control method, computer readable storage medium and air conditioner |
| CN110925948B (en) * | 2019-12-12 | 2021-06-04 | 宁波奥克斯电气股份有限公司 | Detection method and system and air conditioner |
| CN113203179B (en) * | 2021-05-27 | 2022-07-08 | 宁波奥克斯电气股份有限公司 | Sensor falling judgment and expansion valve control method and device and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008138926A (en) * | 2006-12-01 | 2008-06-19 | Matsushita Electric Ind Co Ltd | Compressor protecting controlling method for air conditioner |
| CN102589218A (en) * | 2011-11-30 | 2012-07-18 | 青岛海尔空调电子有限公司 | Method for monitoring detachment of exhaust temperature sensor of air conditioning compressor |
| CN202392954U (en) * | 2012-01-09 | 2012-08-22 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103424211A (en) * | 2012-05-17 | 2013-12-04 | 珠海格力电器股份有限公司 | Detection method and detection device for compressor thermal bulb and outdoor unit |
| CN103807970A (en) * | 2012-11-12 | 2014-05-21 | 珠海格力电器股份有限公司 | control method and device for air conditioner |
-
2015
- 2015-06-04 CN CN201510304874.0A patent/CN104896669B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008138926A (en) * | 2006-12-01 | 2008-06-19 | Matsushita Electric Ind Co Ltd | Compressor protecting controlling method for air conditioner |
| CN102589218A (en) * | 2011-11-30 | 2012-07-18 | 青岛海尔空调电子有限公司 | Method for monitoring detachment of exhaust temperature sensor of air conditioning compressor |
| CN202392954U (en) * | 2012-01-09 | 2012-08-22 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103424211A (en) * | 2012-05-17 | 2013-12-04 | 珠海格力电器股份有限公司 | Detection method and detection device for compressor thermal bulb and outdoor unit |
| CN103807970A (en) * | 2012-11-12 | 2014-05-21 | 珠海格力电器股份有限公司 | control method and device for air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023405A (en) * | 2019-10-30 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Failure detection method for outdoor air temperature sensor, readable storage medium and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104896669A (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104896669B (en) | Air conditioner and its protection control method | |
| CN106196428B (en) | Air conditioner and its anti-freeze control method | |
| CN105091238B (en) | Air conditioning system and air conditioner heating high-temperature-prevention control method and device | |
| CN106016579B (en) | Air-conditioning system and the Discrete control method and apparatus for preventing secondary refrigerant leakage | |
| CN107166677A (en) | New blower fan and its control method and device | |
| CN107436016A (en) | Detection method, the system of air conditioner and wherein coolant leakage | |
| CN105299841B (en) | The fault detection method of the heat exchange valve body of multiple on-line system and its outdoor heat exchanger | |
| CN107421151A (en) | Air conditioner and its coolant leakage detection method and device | |
| CN106765892B (en) | Multi-line system and its outdoor heat exchanger temperature-sensitive packet inspection method and device | |
| JP6061819B2 (en) | Air conditioner | |
| CN106016459B (en) | Air conditioner and its control method | |
| CN105890116A (en) | Detection method and system for leakage of refrigerant of air conditioner | |
| CN107477773A (en) | Air conditioner and its control method and control device | |
| CN106123205B (en) | Moveable air conditioner and its coolant leakage detection method | |
| CN107255352A (en) | Air conditioner and its Temperature Failure or the detection method and device of radiator loose contact | |
| CN109323365A (en) | The method and apparatus and air-conditioning and storage medium of diagnosis air-conditioning obstruction failure | |
| CN107166688A (en) | Control method, control device and the air conditioner of air conditioner | |
| CN107062560A (en) | The coolant leakage protection device and method of air conditioner and air conditioner | |
| CN105972758B (en) | Defrosting control method, defrosting control device and the air conditioner of air conditioner | |
| CN109990439A (en) | A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal | |
| CN107560068A (en) | Fault detection method, fault detection system and air conditioner | |
| CN105004007A (en) | Control method and device for frequency conversion air conditioner | |
| CN107576112A (en) | Detection method and device, air-conditioning for refrigerant leakage | |
| CN106839301A (en) | Air-conditioner defrosting logic control method and device | |
| CN106403429B (en) | The liquid impact prevention control method and control device and air-conditioning system of air-conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |