CN110044009A - A kind of four-way valve switch failure detection method, device and air conditioner - Google Patents
A kind of four-way valve switch failure detection method, device and air conditioner Download PDFInfo
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- CN110044009A CN110044009A CN201910341057.0A CN201910341057A CN110044009A CN 110044009 A CN110044009 A CN 110044009A CN 201910341057 A CN201910341057 A CN 201910341057A CN 110044009 A CN110044009 A CN 110044009A
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- way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides four-way valve switch failure detection method, device and air conditioners, are related to air conditioner technical field.This method include judge according to four-way valve tube temperature data and outlet air temperature four-way valve whether switch failure.Wherein, the temperature data of pipeline of the four-way valve tube temperature data between outdoor unit and four-way valve, outlet air temperature are the delivery temperature of compressor.Four-way valve switch failure device can judge according to four-way valve tube temperature data and outlet air temperature four-way valve whether switch failure.The air conditioner can execute the above method.Four-way valve switch failure detection method, device and air conditioner provided by the invention can solve the problem of how precisely steadily detecting to the four-way valve switch failure of air conditioner.
Description
Technical field
The present invention relates to air conditioner technical fields, in particular to a kind of four-way valve switch failure detection method, device
And air conditioner.
Background technique
As northern coal changes the promotion of clean energy resource heating policy, heat pump type air conditioner is more more and more universal in heating in winter.
Common heat pump type air conditioner realizes the switching of cooling and warming and defrosting by the switching of four-way valve, and is actually heating use process
In often due to various reasons cause the handover failure of four-way valve, if unit cannot be detected and be protected in time when handover failure,
Just it is easy to the problems such as causing compressor to return liquid damage compressor and customer complaint.In the prior art, for the event of four-way Vavle switching
Barrier detection is detected by the associated temperature of the inner disc temperature sensor of outdoor unit and interior machine return air temperature sensor mostly,
Would generally due to how each factor of external environment change and cause the inaccuracy of detection accuracy.
Summary of the invention
Problems solved by the invention is how precisely steadily to detect to the four-way valve switch failure of air conditioner.
To solve the above problems, the present invention provides a kind of four-way valve switch failure detection method, which comprises
According to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure.
Wherein, the temperature data of pipeline of the four-way valve tube temperature data between outdoor unit and the four-way valve, it is described
Outlet air temperature is the temperature data of compressor air-discharging.
Four-way valve switch failure detection method provided by the invention having the beneficial effect that compared with the existing technology passes through foundation
The temperature data of pipeline between outdoor unit and four-way valve, i.e. four-way valve tube temperature data, the refrigeration that judgement is discharged from outdoor unit at this time
The temperature data of agent.And at the same time the outlet air temperature according to compressor judges whether four-way valve switches with four-way valve tube temperature data
Failure can be effectively carried out the judgement of four-way valve switch failure.Meanwhile for four-way valve tube temperature data and outlet air temperature
Detection not will receive the influence of external environment and air conditioner itself blower, so can accurately and effectively react whether four-way valve is cut
Change failure.
Further, the four-way valve tube temperature includes the first tube temperature data and the second tube temperature data.
Wherein, the first tube temperature data indicate before the four-way Vavle switching between the outdoor unit and the four-way valve
The temperature data of pipeline, the second tube temperature data indicate after the four-way Vavle switching between the outdoor unit and the four-way valve
Pipeline temperature data.
Wherein, by according to the first tube temperature data, the second tube temperature data and outlet air temperature to four-way Vavle switching whether
Failure is judged, the accuracy for the judgement of four-way valve switch failure is further improved.Wherein, the first tube temperature data and
Two tube temperature data can react the state of temperature before and after four-way Vavle switching respectively, can be by the state of temperature of switching front and back to four-way valve
Switching whether failure is judged, just can really react four-way valve whether switch failure, improve for four-way Vavle switching therefore
Hinder the precision of detection.
Further, it is described according to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure
Step includes:
Before receiving the switching signal for controlling the four-way Vavle switching, the first tube temperature data are received.
After receiving the switching signal preset time, the second tube temperature data are received.
Receive the outlet air temperature.
Judge whether the four-way valve is cut according to the first tube temperature data, the second tube temperature data and the outlet air temperature
Change failure.
By the second tube temperature data after receiving the preset time of switching signal, can to receive in four-way valve to cut
After changing the preset time after signal, no matter whether four-way valve, which switches, can reach stable state, just be avoided that four-way valve not
Stable state can be reached and caused by erroneous judgement, further increase the accuracy for four-way valve switch failure interpretation.
Further, described to judge institute according to the first tube temperature data, the second tube temperature data and the outlet air temperature
State four-way valve whether switch failure the step of include:
Difference and the second tube temperature data and row according to the first tube temperature data and the second tube temperature data
The difference of temperature value judge the four-way valve whether switch failure.
According to the difference of the first tube temperature data and the second tube temperature data, it can judge whether four-way valve switches completion, if four
Port valve switches successfully, and the four-way valve tube temperature of four-way valve should can generate temperature inversion, and then can carry out four-way valve by the transformation
Whether switch failure is judged.In addition, carrying out four-way according to the difference between the second tube temperature data and outlet air temperature simultaneously
The judgement of Vavle switching failure can be further ensured that the accuracy of the judgement for four-way valve switch failure.
Further, the difference and second pipe according to the first tube temperature data and the second tube temperature data
Warm data and the difference of outlet air temperature judge the four-way valve whether switch failure the step of include:
If the four-way valve is switched from refrigeration mode to heating mode, the second tube temperature data and the first tube temperature number
According to difference be less than or equal to the first preset value, and the difference of the outlet air temperature and the second tube temperature data be greater than or
Equal to the second preset value, then determine that the four-way valve is broken down by the switching that refrigeration mode switches to heating mode.
Wherein, when four-way valve is switched over from refrigeration mode to heating mode, first is subtracted according to the second tube temperature data
Judgement, and the difference according to outlet air temperature sword gas the second tube temperature data are compared with the first preset value for the difference of tube temperature data
Judgement is compared with the second preset value, can accurately judge that four-way valve switches to whether heating mode succeeds by refrigeration mode.
Further, the difference and second pipe according to the first tube temperature data and the second tube temperature data
Warm data and the difference of outlet air temperature judge the four-way valve whether switch failure the step of further include:
If the four-way valve is switched from heating mode to refrigeration mode, the first tube temperature data and the second tube temperature number
According to difference be less than or equal to third preset value, and the difference of the outlet air temperature and the second tube temperature data be less than or
Equal to the 4th preset value, then determine that the four-way valve is broken down by the switching that heating mode switches to refrigeration mode.
Wherein, when four-way valve is switched over from heating mode to refrigeration mode, second is subtracted according to the first tube temperature data
Judgement, and the difference according to outlet air temperature sword gas the second tube temperature data are compared with third preset value for the difference of tube temperature data
Judgement is compared with the 4th preset value, can accurately judge that four-way valve switches to whether refrigeration mode succeeds by heating mode.
Further, it is described according to four-way valve tube temperature data and outlet air temperature judge four-way valve whether the step of switch failure
After rapid, the method also includes:
After judging the four-way valve switch failure, corresponding fault message is issued.
Fault message can be sent after four-way valve switch failure and reminds user's four-way valve switch failure, can be convenient for air-conditioning
The maintenance of device, and avoid bringing more inconvenience for user.
A kind of four-way valve switch failure detection device, comprising:
Judgment module, for according to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure.
A kind of air conditioner, including controller, the controller can execute four-way valve switch failure detection method.The four-way
Vavle switching fault detection method includes:
According to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure.
Wherein, the temperature data of pipeline of the four-way valve tube temperature data between outdoor unit and the four-way valve, it is described
Outlet air temperature is the temperature data of compressor air-discharging.
Further, the air conditioner further includes interconnected four-way valve, compressor, indoor unit and outdoor unit.
The air conditioner further includes the first temperature sensor and second temperature sensor.
First temperature sensor is set on the pipeline between the four-way valve and the outdoor unit, and for detecting
The four-way valve tube temperature data.
The second temperature sensor is set to the exhaust outlet of the compressor, and for detecting the outlet air temperature.
First temperature sensor is electrically connected with the controller, and for sending to the controller.
The beneficial effect of four-way valve switch failure detection device provided by the invention and air conditioner compared with the existing technology
Identical as the beneficial effect of the four-way valve switch failure detection method of above-mentioned offer compared with the existing technology, details are not described herein.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of air conditioner provided by the invention；
Fig. 2 is the flow chart of four-way valve switch failure detection method provided by the invention；
Fig. 3 is the specific flow chart of four-way valve switch failure detection method provided by the invention；
Fig. 4 is the specific flow chart of four-way valve switch failure detection method step S14 provided by the invention；
Fig. 5 is the partial process view of four-way valve switch failure detection method step S141 provided by the invention；
Fig. 6 is the partial process view of four-way valve switch failure detection method step S141 provided by the invention.
Description of symbols:
10- air conditioner；100- indoor unit；The first temperature sensor of 110-；200- four-way valve；300- outdoor unit；400- pressure
Contracting machine；410- second temperature sensor.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
A kind of air conditioner 10 is provided in the present embodiment, how can solve precisely steadily to the four-way valve of air conditioner 10
The problem of 200 switch failures are detected.
Referring to Fig. 1, wherein, which includes at least controller, the first temperature sensor 110, second temperature and passes
Sensor 410, compressor 400, indoor unit 100, outdoor unit 300, four-way valve 200 and a plurality of pipeline.Wherein, indoor unit 100, outdoor
Machine 300, four-way valve 200 and compressor 400 are by a plurality of pipeline connection, and the technology is the prior art, and details are not described herein.Separately
Outside, the first temperature sensor 110 is set on the pipeline between four-way valve 200 and outdoor unit 300, and for detecting outdoor unit
The temperature data of pipeline between 300 and four-way valve 200, i.e. four-way valve tube temperature data.It should be noted that the first temperature passes
Sensor 110 close to four-way valve 200 be arranged, to avoid outdoor unit 300 blower and external environment to the first temperature sensor
110 temperature detection impacts, and then guarantees that the first temperature sensor 110 precisely can steadily detect four-way valve tube temperature.The
Two temperature sensors 410 are set to the exhaust outlet of compressor 400, and the temperature of the pipeline of the exhaust outlet for detecting compressor 400
Degree evidence, i.e. outlet air temperature.It should be noted that second temperature sensor 410 is arranged close to the exhaust outlet of compressor 400,
In order to directly detect 400 delivery temperature of compressor, the influence by ambient temperature is avoided.Controller then with four-way valve
200, the first temperature sensor 110 and second temperature sensor 410 are electrically connected, so that controller can receive control four-way valve
The data such as switching signal, four-way valve tube temperature data and the outlet air temperature of 200 switchings.Also, controller can be according to switching letter
Number, four-way valve tube temperature data and outlet air temperature judge four-way valve 200 whether switch failure.
It should be noted that four-way valve 200 is solenoid operated four-way valve, four-way valve 200 makes to have leisure after receiving switching signal
It adjusts device 10 to be switched over from refrigeration mode to heating mode, or is switched over from heating mode to refrigeration mode.Wherein, it controls
Device can equally receive switching signal, in order to judge four-way valve 200 after receiving switching signal whether switch failure.That is, control
Device processed is used to after receiving switching signal switch over four-way valve 200 fault detection judgement.
Further, if controller judges 200 switch failure of four-way valve, corresponding fault message is issued, in order to mention
The switching of the four-way valve 200 of awake user's air conditioner 10 is broken down, and then is safeguarded convenient for user to air conditioner 10, and
Be avoided that user is caused it is uncomfortable.It should be noted that in the present embodiment, controller can respectively for from heating mode to
The case where refrigeration mode handover failure and corresponding failure is issued respectively from refrigeration mode to the case where heating mode handover failure
Information, in order to judge that 200 switch failure of four-way valve is to occur when switching from heating mode to refrigeration mode or occur
When switching from refrigeration mode to heating mode, so it is easy to repair.
It should be noted that in the present embodiment, air conditioner 10 can be using refrigerant directly in outdoor unit 300 and interior
In machine 100 circulation so that air conditioning air conditioner 10, air conditioner 10 be also possible to by refrigerant to recirculated water carry out refrigeration or
Person's heating, and pass through the air conditioner 10 of the recirculated water progress air conditioning after refrigeration or after heating.
Fig. 1 and Fig. 2 are please referred to, in addition, a kind of four-way valve switch failure detection method is additionally provided in the present embodiment,
Controller can execute this method and judge four-way valve 200 whether switch failure.Four-way valve switch failure detection method includes:
Step S1, according to four-way valve tube temperature data and outlet air temperature judge four-way valve 200 whether switch failure.
Wherein, what four-way valve tube temperature data referred to is the temperature data of pipeline between outdoor unit 300 and four-way valve 200.
What outlet air temperature referred to is the temperature data that compressor 400 is vented.
Pass through the temperature data according to pipeline between outdoor unit 300 and four-way valve 200, i.e. four-way valve tube temperature data, judgement
The temperature data for the refrigerant being discharged at this time from outdoor unit 300.And at the same time outlet air temperature and four-way according to compressor 400
Valve tube temperature data judge four-way valve 200 whether switch failure, can be effectively carried out the judgement of 200 switch failure of four-way valve.Wherein,
External environment and air conditioner 10 itself blower not will receive for the detection of four-way valve tube temperature data and outlet air temperature
Influence, thus can accurately and effectively react four-way valve 200 whether switch failure.
Further, four-way valve tube temperature includes the first tube temperature data and the second tube temperature data.Wherein, the first tube temperature data are
The temperature data of pipeline before four-way valve 200 switches between outdoor unit 300 and four-way valve 200.Second tube temperature data are four-way valve
The temperature data of pipeline after 200 switchings between outdoor unit 300 and four-way valve 200.
That is, can be by being cut according to outlet air temperature three to four-way valve 200 according to the first tube temperature data, the second tube temperature data
Change whether failure is judged, further improves the accuracy for the judgement of 200 switch failure of four-way valve.Wherein, the first pipe
Warm data and the second tube temperature data can react the state of temperature of the switching of four-way valve 200 front and back respectively, can pass through the temperature of switching front and back
Whether failure judges for switching of the degree state to four-way valve 200, just can really react four-way valve 200 whether switch failure,
Improve the precision detected for 200 switch failure of four-way valve.
Wherein, Fig. 2 and Fig. 3 are please referred to, step S1 includes:
Step S11, before receiving the switching signal that control four-way valve 200 switches, the first tube temperature data are received.
It i.e. before four-way valve 200 receives switching signal, while being also the first temperature before controller receives switching signal
The temperature signal for the pipeline that sensor 110 detects between four-way valve 200 and outdoor unit 300, i.e. the first tube temperature data are spent, and are sent
To controller.Controller then receives the first tube temperature data.
Step S12, after receiving switching signal preset time, the second tube temperature data are received.
I.e. after the preset time that four-way valve 200 receives switching signal, while switching signal also is received for controller
After preset time, second temperature sensor 410 detects the temperature signal of the pipeline between four-way valve 200 and outdoor unit 300, i.e.,
Second tube temperature data, and it is sent to controller.Controller then receives the second tube temperature data.
Step S13, outlet air temperature is received.
The temperature data of the exhaust outlet of compressor 400, i.e. compressor 400 are detected by second temperature sensor 410
Outlet air temperature, and outlet air temperature is sent to controller, controller then receives the outlet air temperature.It should be noted that
In the present embodiment, the reception of outlet air temperature is set to after four-way valve 200 receives switching signal preset time,
In order to the state that the delivery temperature of compressor 400 can be made to reach stable, the feelings of four-way valve switch failure wrong report are avoided the occurrence of
Condition.
Step S14, judge whether four-way valve 200 is cut according to the first tube temperature data, the second tube temperature data and outlet air temperature
Change failure.
That is, whether controller can carry out four-way valve 200 according to the first tube temperature data, the second tube temperature data and outlet air temperature
Switch failure is judged.Can make after the preset time that four-way valve 200 receives after switching signal, no matter four-way valve 200
Whether switch can reach stable state, be just avoided that four-way valve 200 fail to reach stable state and caused by erroneous judgement, into
One step improves the accuracy for 200 switch failure interpretation of four-way valve.
Wherein, if judging, four-way valve 200 switches normally, returns to step S11.
Wherein, in the present embodiment, preset time value is 8 minutes, and in other embodiments, preset time can also be by
It is set according to actual demand, such as 10 minutes, 5 minutes or 20 minutes etc..
It should be noted that in the present embodiment, the sequence of step S13 can be replaced, such as exhaust temperature will be received
Angle value is set to before receiving the second tube temperature data, that is, after four-way valve 200 receives switching signal preset time, is first received
Outlet air temperature is receiving the second tube temperature data；Alternatively, it is also possible to being to receive switching signal preset time in four-way valve 200
Afterwards, controller receives outlet air temperature and the second tube temperature data simultaneously.
Further, referring to Fig. 4, step S14 includes:
Step S141, the difference and the second tube temperature data and exhaust temperature according to the first tube temperature data and the second tube temperature data
Difference between angle value judge four-way valve 200 whether switch failure.
It according to the difference of the first tube temperature data and the second tube temperature data, can judge whether four-way valve 200 switches completion, switch
Four-way valve 200 later should can generate temperature inversion, so can be carried out by the transformation four-way valve 200 whether switch failure into
Row judgement.In addition, carrying out 200 switch failure of four-way valve according to the difference between the second tube temperature data and outlet air temperature simultaneously
Judgement, can be further ensured that the accuracy of the judgement for 200 switch failure of four-way valve.
Wherein, referring to Fig. 5, step S141 includes:
If step S21, four-way valve 200 is switched from refrigeration mode to heating mode, the second tube temperature data and the first tube temperature number
According to difference be less than or equal to the first preset value, and the difference of outlet air temperature and the second tube temperature data is more than or equal to second
Preset value then determines that four-way valve 200 is broken down by the switching that refrigeration mode switches to heating mode.
That is, it is judged that whether four-way valve 200 is switched from refrigeration mode to heating mode, and judge the second tube temperature data and first
Whether the difference of tube temperature data is less than or equal to the first preset value, and outlet air temperature and the difference of the second tube temperature data are simultaneously
It is no to be less than or equal to the second preset value, if so, determining that four-way valve 200 is occurred by the switching that refrigeration mode switches to heating mode
Failure.
Wherein, it should be noted that the difference of the second tube temperature data and the first tube temperature data refers to, the second tube temperature number
The difference obtained according to the first tube temperature data are subtracted.In addition, outlet air temperature and the difference of the second tube temperature data refer to, exhaust
Temperature value subtracts the difference that the second tube temperature data obtain.
In addition, in the present embodiment, the value range of the first preset value is 2 DEG C -5 DEG C.Specifically, in this embodiment, the
One preset value is set as 2 DEG C.The value range of second preset value is 10 DEG C -20 DEG C.Specifically, in the present embodiment, second is pre-
If value is set as 15 DEG C.
It should be noted that four-way valve 200 receives switching signal and is switched over from refrigeration mode to heating mode, if
200 handover failure of four-way valve, four-way valve 200 are still within refrigeration mode, and the second tube temperature data should be less than the first tube temperature at this time
Data, it is contemplated that error caused by the first temperature sensor 110 and second temperature sensor 410 itself selects the range of difference
It is set to 2 DEG C -5 DEG C.Four-way just can accurately be judged by the difference between 400 outlet air temperature of compressor and second temperature simultaneously
The switching state of valve 200.
In addition, referring to Fig. 6, step S141 further include:
If step S22, four-way valve 200 is switched from heating mode to refrigeration mode, the first tube temperature data and the second tube temperature number
According to difference be less than or equal to third preset value, and the difference of outlet air temperature and the second tube temperature data is more than or equal to the 4th
Preset value then determines that four-way valve 200 is broken down by the switching that heating mode switches to refrigeration mode.
That is, it is judged that whether four-way valve 200 is switched from heating mode to refrigeration mode, and judge the first tube temperature data and second
Whether the difference of tube temperature data is less than or equal to third preset value, and outlet air temperature and the difference of the second tube temperature data are simultaneously
It is no to be less than or equal to the 4th preset value, if so, determining that four-way valve 200 is occurred by the switching that heating mode switches to refrigeration mode
Failure.
Wherein, it should be noted that the difference of the first tube temperature data and the second tube temperature data refers to, the first tube temperature number
The difference obtained according to the second tube temperature data are subtracted.In addition, outlet air temperature and the difference of the second tube temperature data refer to, exhaust
Temperature value subtracts the difference that the second tube temperature data obtain.
In addition, it is necessary to explanation, the value range of third preset value is 15 DEG C -20 DEG C, specifically, in the present embodiment
In, third preset value is set as 15 DEG C.In addition, the value range of the 4th preset value is 15 DEG C -20 DEG C, specifically, in this implementation
In example, the 4th preset value is set as 15 DEG C.
It should be noted that four-way valve 200 receives switching signal and is switched over from heating mode to refrigeration mode, if
200 handover failure of four-way valve, four-way valve 200 are still within heating mode, at this time the second tube temperature data and the first tube temperature data
Difference should not be more than 15 DEG C, if the difference of the second tube temperature data and the first tube temperature data is more than 15 DEG C at this time, show four-way
The switching of valve 200 is broken down.Just can accurately it be sentenced by the difference between 400 outlet air temperature of compressor and second temperature simultaneously
The switching state of disconnected four-way valve 200.
In addition, in the present embodiment, when air conditioner 10 is when executing heating mode, indoor unit 100 is it is possible that frosting
Situation, at this time, it may be necessary to by the heating mode of air conditioner 10 change into refrigeration mode be indoor unit 100 defrost, that is, this
In embodiment, four-way valve 200 is switched over from heating mode to refrigeration mode, same it is considered that being four-way valve 200 by heating
Mode is switched over to defrosting mode.
That is, by the above method judgement whether switching of defrosting mode breaks down can be convenient for, and then can improve
The accuracy rate of fault detection when defrosting.
Further, four-way valve switch failure detection method further include:
Step S2, after judging 200 switch failure of four-way valve, corresponding fault message is issued.
Corresponding fault message can be sent after 200 switch failure of four-way valve reminds user's four-way valve 200 to switch
Failure can be convenient for the maintenance of air conditioner 10, and avoid bringing more inconvenience for user.
It should be noted that the four-way valve switch failure detection method can individually be switched into refrigeration mode to heating mode
The detection of row switch failure, while individually heating mode can be switched to refrigeration mode and carry out switch failure detection, just can accurately
Detect the classification of 200 switch failure of four-way valve, convenient analysis and maintence after sale.That is, wherein corresponding fault message refers to, when
From heating mode to refrigeration mode handover failure, controller can issue a kind of fault message to represent four-way valve 200 by heating mould
Formula switches to refrigeration mode to break down；In addition, when from refrigeration mode to heating mode handover failure, controller can issue one kind
Fault message switches failure to represent four-way valve 200 from refrigeration mode to heating mode.
After issuing corresponding fault message, user can select to disconnect the power supply of air conditioner 10, and restart air conditioner
10, if just illustrating Failure elimination without issuing fault message again.If can still issue fault message, show four-way valve
200 switch failures still remain, and need to carry out maintenance shut-downs.
In addition, additionally providing a kind of four-way valve switch failure detection device in the present embodiment, which includes judgment module,
Judgment module be used to judge according to four-way valve tube temperature data and outlet air temperature four-way valve 200 whether switch failure.Also, four
Port valve switch failure detection device can also include receiving module, and receiving module is for receiving four-way valve tube temperature data and exhaust
Temperature data.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of four-way valve switch failure detection method, which is characterized in that the described method includes:
According to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure；
Wherein, the temperature data of pipeline of the four-way valve tube temperature data between outdoor unit and the four-way valve, the exhaust
Temperature value is the delivery temperature of compressor.
2. four-way valve switch failure detection method according to claim 1, which is characterized in that the four-way valve tube temperature includes
First tube temperature data and the second tube temperature data；
Wherein, the first tube temperature data indicate the pipeline before the four-way Vavle switching between the outdoor unit and the four-way valve
Temperature data, the second tube temperature data indicate the pipe after the four-way Vavle switching between the outdoor unit and the four-way valve
The temperature data on road.
3. four-way valve switch failure detection method according to claim 2, which is characterized in that described according to four-way valve pipe
Warm data and outlet air temperature judge four-way valve whether switch failure the step of include:
Before receiving the switching signal for controlling the four-way Vavle switching, the first tube temperature data are received；
After receiving the switching signal preset time, the second tube temperature data are received；
Receive the outlet air temperature；
Judge whether the four-way valve switches event according to the first tube temperature data, the second tube temperature data and the outlet air temperature
Barrier.
4. four-way valve switch failure detection method according to claim 3, which is characterized in that described according to first pipe
Warm data, the second tube temperature data and the outlet air temperature judge the four-way valve whether switch failure the step of include:
Difference and the second tube temperature data and exhaust temperature according to the first tube temperature data and the second tube temperature data
The difference of angle value judge the four-way valve whether switch failure.
5. four-way valve switch failure detection method according to claim 4, which is characterized in that described according to first pipe
The difference and the second tube temperature data and the difference of outlet air temperature of warm data and the second tube temperature data judge described four
Port valve whether switch failure the step of include:
If the four-way valve is switched from refrigeration mode to heating mode, the second tube temperature data and the first tube temperature data
Difference is less than or equal to the first preset value, and the outlet air temperature and the difference of the second tube temperature data are greater than or equal to
Second preset value then determines that the four-way valve is broken down by the switching that refrigeration mode switches to heating mode.
6. four-way valve switch failure detection method according to claim 4, which is characterized in that described according to first pipe
The difference and the second tube temperature data and the difference of outlet air temperature of warm data and the second tube temperature data judge described four
Port valve whether switch failure the step of further include:
If the four-way valve is switched from heating mode to refrigeration mode, the first tube temperature data and the second tube temperature data
Difference is less than or equal to third preset value, and the outlet air temperature and the difference of the second tube temperature data are less than or equal to
4th preset value then determines that the four-way valve is broken down by the switching that heating mode switches to refrigeration mode.
7. four-way valve switch failure detection method according to claim 1, which is characterized in that described according to four-way valve tube temperature
Data and outlet air temperature judge four-way valve whether switch failure the step of after, the method also includes:
After judging the four-way valve switch failure, corresponding fault message is issued.
8. a kind of four-way valve switch failure detection device characterized by comprising
Judgment module, for according to four-way valve tube temperature data and outlet air temperature judge four-way valve whether switch failure.
9. a kind of air conditioner, which is characterized in that including controller, the controller can be by operation computer program to execute such as
Four-way valve switch failure detection method described in any one of claim 1-7.
10. air conditioner according to claim 9, which is characterized in that the air conditioner further include interconnected four-way valve,
Compressor, indoor unit and outdoor unit；
The air conditioner further includes the first temperature sensor and second temperature sensor；
First temperature sensor is set on the pipeline between the four-way valve and the outdoor unit, and described for detecting
Four-way valve tube temperature data；
The second temperature sensor is set to the exhaust outlet of the compressor, and for detecting the outlet air temperature；
First temperature sensor is electrically connected with the controller, and for sending to the controller.
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