CN108679779A - Air-conditioner outdoor unit, air conditioner, control method, controller and storage medium - Google Patents
Air-conditioner outdoor unit, air conditioner, control method, controller and storage medium Download PDFInfo
- Publication number
- CN108679779A CN108679779A CN201810418598.4A CN201810418598A CN108679779A CN 108679779 A CN108679779 A CN 108679779A CN 201810418598 A CN201810418598 A CN 201810418598A CN 108679779 A CN108679779 A CN 108679779A
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- Prior art keywords
- air
- unit
- conditioner
- throttle
- compressor
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Classifications
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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
-
- 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
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air-conditioner outdoor unit, air conditioner, control method, controller and storage mediums, by on first throttle unit parallel connection sensor is set by throttle part and solenoid valve the second throttling unit in series and on compressor housing, to detect the case temperature value of compressor, and judge whether first throttle unit blocks according to case temperature value, it is open-minded that solenoid valve is controlled when first throttle unit blocks, so that the second throttling unit accesses air-conditioner hose, to throttle to the refrigerant in pipeline.The relatively existing single throttle part of air conditioner of the present invention, add the second throttling unit, the second emergent throttling unit can be enabled when first throttle unit blocks to continue to throttle, and avoided with this since throttle part blocking causes compression case body temperature to rise excessively high the problem of leading to compressor fault.
Description
Technical field
The present invention relates to field of air conditioner control more particularly to a kind of air-conditioner outdoor unit, air conditioner, control method, controls
Device and storage medium processed.
Background technology
Air conditioner conventional at present only there are one throttle part, as capillary either electric expansion valve or capillary and
It throttles after electric expansion valve series connection, when the failure of above-mentioned throttle part, capillary such as occurs or the dirty stifled, oil of electric expansion valve blocks up
Or ice is stifled, system can not all form normal refrigerant fluid circulation, also cannot normal cooling and warming, after longtime running, by
It can not be radiated by refrigerant in compressor, compression case temperature can be caused higher and higher, compression machine burning is caused when serious
It ruins.
The above is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that the above is existing skill
Art.
Invention content
The main purpose of the present invention is to provide a kind of air-conditioner outdoor units, it is therefore intended that solves existing air conditioner due to list
A throttle part there are problems that causing when plugging fault compressor can not proper heat reduction and there is compressor high temperature failure.
To achieve the above object, a kind of air-conditioner outdoor unit provided by the invention, the air-conditioner outdoor unit include successively
Compressor, four-way valve, outdoor heat exchanger and the first throttle unit of connection, the first throttle unit have confession and air conditioner chamber
The port of interior machine connection, which is characterized in that the air conditioner further includes：
Second throttling unit, second throttling unit includes the throttle part and solenoid valve being connected in series with each other, described
Second throttling unit is parallel to first throttle unit both ends and forms refrigerant bypass, and the solenoid valve is described cold for controlling
The opening and closing of matchmaker's bypass.
Preferably, the first throttle unit be capillary or electric expansion valve, and/or, second throttling unit
For capillary.
To achieve the above object, the present invention also provides a kind of air conditioner, the air conditioner includes indoor unit, temperature sensing
Indoor heat exchanger, the both ends of the indoor set heat exchanger are arranged in device, controller and above-mentioned air-conditioner outdoor unit, the indoor unit
It connects one to one with the four-way valve and the first throttle unit, the temperature sensor is used to detect the shell on compressor
Temperature, wherein
The controller, for determining the first throttle unit in the temperature parameter detected according to the temperature sensor
When blocking, controls the solenoid valve and open so that the refrigerant in the second throttling unit air-conditioner hose throttles.
To achieve the above object, the present invention also provides a kind of air-conditioner control method, the indoor unit of the air conditioner and rooms
Outer machine is connect by first throttle unit and with the second throttling unit of first throttle unit parallel connection, second throttling
Unit includes the throttle part and solenoid valve being connected in series with each other, and the detection compression is provided on the compressor of the air conditioner
The sensor of casing temperature, the air-conditioner control method include：
Obtain the case temperature value TK of the compressor；
Judge TK>Whether TC1 is true, and wherein TC1 is the first preset temperature value, and TC1>135℃；
Work as TK>TC1 and when the duration is more than tm1, determines that the first throttle unit blocks, controls the solenoid valve and open
Passing to makes second throttling unit access air-conditioner hose, and wherein tm1 is the first preset time, and 8 minutes<tm1<12 points
Clock.
Preferably, the first throttle unit is capillary, works as TK>When TC1 is invalid, the air-conditioner control method is also
Including：
Detect the continuous operating time tcn of compressor；
Judge TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2≤122 DEG C；
Work as TC2<When TK≤TC1, tcn is judged>Whether tm2 is true, and wherein tm2 is the second preset time, and 38 minutes<
tm1<43 minutes；
Work as tcn>When tm2, detects and obtain the running current value Icomp of compressor and the outlet air temperature TP of compressor；
Judge Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<tm1<1.5A；
Work as Icomp<When I0, TP is judged>Whether TC3 is true, and wherein TC3 is third preset temperature value, and 89≤TC3≤92
℃；
Work as TP>TC3 and when the duration is more than third preset time t m3, determines that the first throttle unit blocks, control
The solenoid valve is opened so that second throttling unit accesses the air-conditioner hose, wherein 0.5 minute<tm3<2 minutes.
Preferably, work as Icomp<When I0, TP is judged>When TC3 is invalid, the air-conditioner control method further includes：
Judge TC4<TP≤TC3, wherein TC4 are the 4th preset temperature value, and 78 DEG C≤TC4≤82 DEG C；
Work as TC4<TP≤TC3 and when the duration is more than the 4th preset time t m4, determines that the first throttle unit is stifled
Plug controls the solenoid valve and opens so that second throttling unit accesses the air-conditioner hose system work, wherein 18 points
Clock<tm4<24 minutes.
Preferably, the first throttle unit is electric expansion valve, works as TK>When TC1 is invalid, the air conditioner controlling party
Method further includes：
Judge TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2≤122 DEG C；
Work as TC2<When TK≤TC1, the continuous operating time tcn of compressor is detected and obtained, and judges tcn>Tm2 whether at
Vertical, wherein tm2 is the second preset time, and 38 minutes<tm1<43 minutes；
Work as tcn>When tm2, the running current value Icomp of compressor is detected and obtained；
Judge Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<I0<1.5A；
Work as Icomp<When I0, obtain the current opening value D of the electric expansion valve, and judge D ＞ Dmax-D1 whether at
Vertical, wherein Dmax is the maximum opening value of electric expansion valve operation, and D1 is default opening value, and 70 steps<D1<90 steps；
As D ＞ Dmax-D1 and when the duration is more than third preset time t m3, determine that the first throttle unit blocks,
The solenoid valve is controlled to open so that second throttling unit accesses the air-conditioner hose, wherein 0.5 minute<tm3<2 points
Clock.
Preferably, judging the first throttle unit blocking, controlling the solenoid valve and open so that second throttling
Unit accesses the air-conditioner hose system work step：
When the compressor is again turned on, judge whether TK≤TC2 is true；
As TK≤TC2, judges that the first throttle unit blocks and restore, control the solenoid valve and close.
Preferably, judging the first throttle unit blocking, controlling the solenoid valve and open so that second throttling
Unit accesses the air-conditioner hose system work step：
To judging that the times N that first throttle unit blocks adds up；
When compressor is again turned on, judge whether N >=N0 is true, wherein N0 is preset times value, and 2≤N0≤5；
As N >=N0, determine that the first throttle unit is often to block up state, control solenoid valve is opened so that the second throttling
Unit accesses air-conditioner hose system.
Preferably, when N >=N0 is invalid, the air-conditioner control method further includes：
Judge whether Icomp >=I0 is true；
As Icomp >=I0, determines that the first throttle unit blocks and restore, control the solenoid valve and close.
To achieve the above object, the present invention also provides a kind of controller of air conditioner, the controller is arranged in air conditioner
In indoor unit or outdoor unit, the controller includes memory, processor and is stored on the memory and can be in institute
The air conditioner control program run on processor is stated, the air conditioner control program is realized described when being executed by the processor
Air-conditioner control method.
To achieve the above object, the present invention also provides a kind of computer readable storage medium, the computer-readable storages
Air conditioner control program is stored on medium, the air conditioner control program realizes the air conditioner control when being executed by processor
The step of method processed.
The air conditioner of the embodiment of the present invention, by first throttle unit parallel connection connected structure by throttle part and solenoid valve
At the second throttling unit and sensor is set on compressor housing, to detect the case temperature value of compressor, and according to shell
Body temperature angle value judges whether first throttle unit blocks, and when first throttle unit blocks, control solenoid valve is open-minded,
So that the second throttling unit accesses air-conditioner hose, to throttle to the refrigerant in pipeline.The air conditioner of the present invention is opposite
Existing single throttle part, adds the second throttling unit, and emergent second can be enabled when first throttle unit blocks
Throttling unit continues to throttle, and is avoided with this since throttle part blocking causes compression case body temperature liter is excessively high to lead to compressor event
The problem of barrier.
Description of the drawings
Fig. 1 is that the first throttle unit of air conditioner of the present invention is the air-conditioner hose schematic diagram of capillary；
Fig. 2 is the air-conditioner hose schematic diagram that air conditioner pipe first throttle unit of the present invention is electric expansion valve；
Fig. 3 is the first embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 4 is the second embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 5 is the 3rd embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 6 is the fourth embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 7 is the 5th embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 8 is the sixth embodiment flow diagram of air-conditioner control method of the present invention；
Fig. 9 is the 7th embodiment flow diagram of air-conditioner control method of the present invention；
Figure 10 is the air conditioner function module diagram of the present invention；
Figure 11 is the controller of air conditioner unit functional module schematic diagram of the present invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.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 present invention proposes a kind of air conditioner, as shown in Figure 1, the air conditioner include outdoor heat exchanger 1, first throttle unit 2,
The setting of indoor heat exchanger 3, four-way valve 4, compressor 5, inner blower 6 and outer wind turbine 7, wherein indoor heat exchanger 3 and inner blower 6 exists
In indoor unit, outdoor heat exchanger 1, four-way valve 4, compressor 5 and outer wind turbine 7 are arranged in outdoor unit, and refrigerant is through outdoor heat exchange
It is circulated in the refrigerant pipe of device 1, first throttle unit 2,3 refrigerant pipe of indoor heat exchanger, four-way valve 4 and compressor 5, completes system
Cold or heating, the access that above-mentioned refrigerant circulation flows through constitute air-conditioner hose.Specifically, when air conditioner runs heating mode
When, the refrigerant in pipeline is flowed to as shown in solid arrow in Fig. 1, and air conditioner controls four-way valve by controlling the operation of compressor 5
4 commutation so that the refrigerant in pipeline forms the gaseous coolant of high temperature and pressure from the exhaust of compressor 5 after being compressed by compressor 5
Mouth comes out, and discharge heat through indoor heat exchanger 3 becomes the low temperature cold of gas-liquid mixture phase through inner blower 7 to indoor submitting hot wind
Matchmaker, and further decrease through the throttling of first throttle unit 2, refrigerant temperature and pressure and become low temperature liquid refrigerant, then through outdoor
Heat exchanger 1 absorbs heat, and through outdoor fan 6 to outdoor submitting cold wind, it is cryogenic gaseous refrigerant that refrigerant temperature, which increases, finally through compressor
Air inlet enters the compression of compressor 5 and realizes entire heating cyclic process with this；When air conditioner runs refrigeration mode, in pipeline
Refrigerant flows to as indicated by the dashed arrow in fig. 1, and the refrigerant in pipeline forms high temperature and pressure gaseous state after being compressed by compressor 5 is cold
Matchmaker discharges the liquid refrigerants that heat becomes medium temperature high pressure through outdoor heat exchanger 1, through outdoor fan 7 to outdoor submitting hot wind, and passes through
First throttle unit 2 throttle after, refrigerant temperature and pressure further decrease the liquid state refrigerant for becoming low-temp low-pressure, then into
Enter indoor heat exchanger 3 and carry out heat absorption to become the gaseous coolant of medium temperature low pressure, at this time through inner blower 6 by low temperature on indoor heat exchanger to
Indoor submitting cold wind finally enters compressor 5 and is compressed and realizes entire refrigerative circle system with this.
Further include the second throttling unit 12 in the air-conditioner outdoor unit, which includes the section being serially connected
Stream unit 121 and solenoid valve 122, the second throttling unit 12 is in parallel and 2 both ends of first throttle unit are to form refrigerant bypass, electricity
Magnet valve 122 is used to control the opening and closing of refrigerant bypass.Specifically, air conditioner controls the on off state of solenoid valve 122
System realizes the opening and closing of control refrigerant bypass.Since the air-conditioner outdoor unit has increased the second throttling unit 12 newly,
When detecting that first throttle unit 2 blocks, air conditioner can realize the second throttling unit of control by controlling solenoid valve 122
12 refrigerant bypasses formed are opened, to maintain normal circulation of the current refrigerant of air conditioner in air-conditioner hose to work, Bu Huiyin
Cause compression case body temperature liter excessively high so that air conditioner can not work normally for the blocking of first throttle unit 2.
Specifically, the throttle part in above-mentioned first throttle unit 2 is capillary, or electronics shown in Fig. 2 is swollen
Swollen valve, the opening size of electric expansion valve can be sent out instruction by air conditioner and adjusted；Throttle part 121 in second throttling unit is
Capillary.
The air conditioner further includes the temperature sensor 14 and controller being arranged on 5 shell of compressor, temperature sensor 14
Case temperature value TK for detecting compressor.The temperature sensor 14 may be provided at the outside of compressor housing, with shell table
Face paste is closed to detect case temperature value, and controller may be provided in air-conditioner outdoor unit or in indoor unit, and controller is according to upper
The case temperature parameter value TK for stating the compressor 5 that temperature sensor 14 detects, judges whether first throttle unit 2 blocks up
Plug, when being determined as blocking, control solenoid valve 122 is opened so that the second throttling unit 12 accesses air-conditioner hose, with to pipeline
In refrigerant throttle.
The air conditioner can further include the temperature sensing for the detection outdoor environment temperature T4 being arranged in outdoor unit
Device 8, the temperature sensor 9 of 1 coil temperature T3 of detection outdoor heat exchanger, the exhaust temperature of 5 exhaust port temperatures value TP of detection compressor
Sensor 13 is spent, and the temperature sensor 11 of detection indoor environment temperature T1 and detection indoor heat exchanger in machine indoors are set
The temperature sensor 10 of 3 coil temperature T2, air conditioner are based on detecting above-mentioned temperature value, control indoor fan 7 and outdoor wind in time
The operation of machine 6 and the frequency of compressor 5, to meet refrigeration or heating operation demand set by user.The embodiment of the present invention
Air conditioner, by first throttle unit 2 parallel connection by throttle part 121 and solenoid valve 122 it is in series second throttling
Unit 12, and temperature sensor 14 is set on 5 shell of compressor, to detect the case temperature value TK of compressor, and according to shell
Body temperature angle value TK determines that control solenoid valve 122 is open-minded when first throttle unit 2 blocks, so that the second throttling unit 12
Air-conditioner hose is accessed, to throttle to the refrigerant in pipeline.The relatively existing single section of the air conditioner of the embodiment of the present invention
Stream unit adds the second throttling unit 12, can be enabled when first throttle unit blocks the second emergent throttling unit after
Continuous throttling is avoided with this since throttle part blocking causes compression case body temperature to rise excessively high the problem of leading to compressor fault.
The present invention also proposes a kind of air-conditioner control method, is based on above-mentioned air conditioner, the indoor unit of the air conditioner and outdoor
Machine is connect by first throttle unit 2 and the second throttling unit 12 in parallel with first throttle unit 2, the second throttling unit 12
Including the throttle part 121 being connected in series with each other and solenoid valve 122, detection compression case is provided on the compressor 5 of air conditioner
The sensor 14 of temperature, as shown in figure 3, the air-conditioner control method includes：
Step S100 obtains the case temperature value TK of compressor 5；
Step S200, judges TK>Whether TC1 is true, and wherein TC1 is the first preset temperature value, and TC1>135℃；
Step S300, works as TK>TC1 and when the duration is more than tm1, determines that first throttle unit 2 blocks, controls solenoid valve
122 open so that the second throttling unit 12 accesses air-conditioner hose, and wherein tm1 is the first preset time, and 8 minutes<tm1<12
Minute.
Since the refrigerant that compressor 5 is the constantly low-temp low-pressure to entering from entrance during the work time compresses,
And the refrigerant of high temperature and pressure is sent out from the outlet of exhaust, the power of refrigerant flowing is provided as the pipeline of entire air conditioner,
Compressor 5 carries out in compression process low temperature refrigerant, and refrigerant plays cold to the mechanical part of compressor 5 compress simultaneously
But effect, if causing the reduction of refrigerant amount of flow since blocking occurs in throttle part in pipeline so that enter the cold of compressor 5
Matchmaker also reduces, therefore the refrigerant that compressor 5 compresses is reduced, and is also reduced with the effect that the mechanical part of this compressor 5 cools,
These mechanical part temperature rises of compressor 5,5 case temperature of compressor being connect with these mechanical parts can thus be caused
Rise, and since the component for the minimum sectional area that refrigerant flows through in air-conditioner hose is exactly throttle part, thus when compressor 5 is sent out
Raw pipeline blockage, such as due to occurring occurring most frequently the place of blocking when oil is stifled or ice is stifled in pipeline being exactly throttle part, thus
By judging whether the case temperature of compressor 5 can determine whether the throttle part in pipeline blocks extremely.
Specifically, being more than the first preset value TC1 by judging case temperature value TK and continuing the tune of the first preset time t m1
Whether section meets to determine, wherein the first preset value TC1 and the first preset time t m1 are determined by experiment, general TC11>135
DEG C as value be 140 DEG C, 8 minutes<tm1<Such as value is 10 minutes within 12 minutes.Such as by judging that case temperature value TK is continuing 10
Minute or more above 140 DEG C, then be judged as first throttle unit 2 block, at this time control solenoid valve 122 it is open-minded so that second
Throttling unit 12 accesses the pipeline of air conditioner, substitutes first throttle unit 2 and carries out throttling left and right to refrigerant, and then maintains air-conditioning
Refrigerant normal circulation in pipeline.
The air-conditioner control method of this implementation by detecting and obtaining the case temperature value TK of compressor 5, and judges shell
Whether temperature, which is continued above the first preset time, is more than the first preset temperature value, then is judged as the first throttle unit 2 of compressor 5
It blocks, it is open-minded that solenoid valve 122 is controlled with this so that the second throttling unit 12 accesses the pipeline of air conditioner, substitutes first throttle list
First 2 pairs of refrigerants carry out throttling left and right, and then maintain the refrigerant normal circulation in air-conditioning duct, avoid due to first throttle list
Member 2, which blocks, to be there is 5 shell temperature of compressor and rises excessively high and failure problem.
Further, the first embodiment based on air-conditioner control method of the present invention, air-conditioner control method of the present invention
In second embodiment, as shown in figure 4, the first throttle unit 2 of the air conditioner is capillary, work as TK>When TC1 is invalid, air-conditioning
Device control method further includes：
Step S301, judges TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2
≤122℃；
Step S302, works as TC2<When TK≤TC1, the continuous operating time tcn of compressor 5 is detected and obtained；
Step S303, judges tcn>Whether tm2 is true, and wherein tm2 is the second preset time, and 38 minutes<tm1<43 points
Clock；
Step S304, works as tcn>When tm2, running current value Icomp and the exhaust of compressor of compressor 5 are detected and obtained
Temperature value TP；
Step S305, judges Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<I0<1.5A；
Step S306, works as Icomp<When I0, TP is judged>Whether TC3 is true, and wherein TC3 is third preset temperature value, and 89
≤TC3≤92℃；
Step S307, works as TP>TC3 and when the duration is more than third preset time t m3, determines that first throttle unit 2 is stifled
Plug, control solenoid valve 122 is opened so that single 12 yuan of the second throttling accesses air-conditioner hose, wherein 0.5 minute<tm3<2 minutes.
In the present embodiment, on the basis of based on first embodiment, specific to the situation that first throttle unit 2 is capillary
Under, in the case where detecting that the case temperature value TK of compressor 5 is lower than the first preset temperature value TC1, introduce other inspections
The outlet air temperature TP that parameter includes compressor continuous operating time tcn, compressor 5 running current Icomp and compressor 5 is surveyed,
Whether further comprehensive descision first throttle unit 2 blocks.
By taking a specific judgment step as an example, 140 DEG C of TC2 values in above-mentioned parameter here, 120 DEG C of TC2 values, tm2 takes
Value 40 minutes, I0 values are 1A, and TC3 values are 90 DEG C, and tm3 values are 1 minute, when 120 DEG C<When TK≤140 DEG C, and compressing
5 continuous operation of machine after forty minutes, when judging the running current value Icomp ＜ 1A of compressor 5, and delivery temperature TP>90 DEG C of item
The part lower duration was then to be judged as that first throttle unit 2 is blocked more than 1 minute, controls solenoid valve 122 at this time and opens so that the
Two throttling units access air-conditioner hose.When occurring to block so that refrigerant flowing is reduced due to pipeline, the power of compressor 5 can drop
It is low i.e. running current reduce, while delivery temperature also can relative reduction, the delivery temperature normally freezed up to 120 DEG C or more, this
When by introducing above-mentioned new parametric synthesis judgement also can show whether throttle part blocks.
Further, the second embodiment based on air-conditioner control method of the present invention, air-conditioner control method of the present invention
In 3rd embodiment, as shown in figure 5, in step S306, work as TP>When TC3 is invalid, air-conditioner control method further includes：
Step S308, judges TC4<Whether TP≤TC3 is true, and wherein TC4 is the 4th preset temperature value, and 78 DEG C≤TC4
≤82℃；
Step S309, works as TC4<TP≤TC3 and when the duration is more than the 4th preset time t m4, determines first throttle list
Member blocks, and control solenoid valve is opened so that the second throttling unit access air-conditioner hose system works, wherein 18 minutes<tm4<24
Minute.
The present embodiment and second embodiment the difference is that the outlet air temperature TP of the compressor of detection be less than or equal to
A value range of TC3, i.e. delivery temperature further decrease, and increase at this time to maintaining this outlet air temperature condition duration
Judge, by taking a specific judgment step as an example, TC4 values are 80 DEG C in above-mentioned parameter here, when tm4 values are 20 minutes, row
Temperature degree TP meets 80 DEG C<When TP≤90 DEG C, and when meeting this condition 2 compressor continuous working periods already exceed 20 minutes,
Then it is judged as that first throttle unit 2 blocks, controls solenoid valve at this time and open so that the second throttling unit accesses air-conditioner hose.
Further, the first embodiment based on air-conditioner control method of the present invention, air-conditioner control method of the present invention
In fourth embodiment, as shown in fig. 6, the first throttle unit 2 of the air conditioner is electric expansion valve, work as TK>When TC1 is invalid,
Air-conditioner control method further includes：
Step S310, judges TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2
≤122℃；
Step S311, works as TC2<When TK≤TC1, the continuous operating time tcn of compressor 5 is detected and obtained；
Step S312, judges tcn>Whether tm2 is true, and wherein tm2 is the second preset time, and 38 minutes<tm1<43 points
Clock；
Step S313, works as tcn>When tm2, the running current value Icomp of compressor is detected and obtained；
Step S314, judges Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<I0<1.5A；
Step S315, works as Icomp<When I0, the current opening value D of electric expansion valve is obtained；
Step S316 judges whether D ＞ Dmax-D1 are true, and wherein Dmax is the maximum opening value of electric expansion valve operation,
D1 is default opening value, and 70 steps<D1<90 steps；
Step S317 determines first throttle unit as D ＞ Dmax-D1 and when the duration is more than third preset time t m3
2 block, and control solenoid valve 122 is opened so that the second throttling unit accesses air-conditioner hose, wherein 0.5 minute<tm3<2 minutes.
It is electric expansion valve specific to first throttle unit 2 on the basis of based on first embodiment in the present embodiment
Under situation, in the case where detecting that the case temperature value TK of compressor 5 is lower than the first preset temperature value TC1, other are introduced
Detection parameters include compressor continuous operating time tcn, compressor 5 running current Icomp and electronic expansion valve opening value D,
Whether further comprehensive descision first throttle unit 2 blocks.
By taking a specific judgment step as an example, 140 DEG C of TC2 values in above-mentioned parameter here, 120 DEG C of TC2 values, tm2 takes
Value 40 minutes, I0 values are 1A, and D1 values are 80 steps, and tm3 values are 1 minute, when 120 DEG C<When TK≤140 DEG C, and compressing
5 continuous operation of machine after forty minutes, when judging the running current value Icomp ＜ 1A of compressor 5, and the current aperture of electric expansion valve
D>The duration is more than 1 minute under the conditions of Dmax-80, then is judged as that first throttle unit 2 blocks, controls solenoid valve 122 at this time
It opens so that the second throttling unit 2 accesses air-conditioner hose.Here the general values of Dmax are 480 steps.In control method of the present invention
Second embodiment on the basis of, when in the pipeline of air-conditioning send block so that refrigerant flowing reduce when, in addition to will appear compressor 5
Running current reduce energy that is outer, while making the air conditioner cold wind that indoor unit is sent out under refrigeration or heating mode or hot wind
Power is insufficient, and under existing air conditioner control rule, if the refrigeration of air conditioner or heating capacity cannot meet target temperature
Degree is set temperature volume demand, and the aperture of expansion valve can be tuned up the setting temperature until meeting refrigeration or heating by air conditioner at this time
Degree demand, and when expansion valve aperture regulation to very greatly close to maximum opening and continue for for a period of time be not met by setting
When temperature requirements, it can be determined that blocked for the second throttling unit 2 at this time.
Further, first to fourth any one embodiment based on air-conditioner control method of the present invention, the present invention are empty
In the 5th embodiment for adjusting device control method, as shown in fig. 7, judging the blocking of first throttle unit 2, controls solenoid valve 122 and open
It passes to after so that the second throttling unit 2 is accessed air-conditioner hose system work step and further includes：
Step S411, to judging that the times N that first throttle unit blocks adds up；
Step S412 judges whether N >=N0 is true when compressor is again turned on, and wherein N0 is preset times value, and 2
≤N0≤5；
Step S413 determines that first throttle unit is normal stifled state as N >=N0, and control solenoid valve is opened so that the
Two throttling units access air-conditioner hose system.
It is opened so that the second throttling unit 12 when air conditioner determines the blocking of first throttle unit 2 and controls solenoid valve 122
After accessing air-conditioner hose, if compressor 5 is closed in the air conditioner course of work, such as since current indoor ambient temperature value T1 reaches
When therefore controlling compressor 5 to set temperature value TS to close, or other protections occur so that compressor 5 is closed, need to control
Solenoid valve 122 processed is delayed a short preset time as closed after 1 minute, so that the pressure balance in entire pipeline, that is, control
Second throttling unit 12 is disconnected from air-conditioner hose, because pipeline may be interim blocking at this time, it is possible to compress
Restore when machine is again turned on, and the second throttling unit 12 only substitutes first throttle unit 2 temporarily, the throttling of refrigerant is imitated
Fruit not as good as original second throttling unit 2, especially the second throttling unit 2 be electric expansion valve when, the second throttling unit 12
The throttle opening size of capillary can not be adjusted, therefore can only be used as Emergency use.
Therefore, after being judged as that first throttle unit blocks in compressor operation, when compressor is again turned on, meeting
Again it is detected to whether first throttle unit 2 occurs to block, when each compressor 5 is again turned on, if detected again
First throttle unit 2 blocks, and can add up again to blocking times N, if blocking number meets preset times value N0, such as
Occurring to block has 3 times, then can be confirmed that first throttle unit 2 is often to block up state, that is, number blocking cannot restore in time
, thus the unlatching of solenoid valve 122 is directly controlled when compressor is again turned on, to allow the second throttling unit 122 to access air conditioner
Pipeline substitutes first throttle unit 2 and throttles to refrigerant.
Further, the 5th embodiment based on air-conditioner control method of the present invention, air-conditioner control method of the present invention
In sixth embodiment, as shown in figure 8, when N >=N0 is invalid, air-conditioner control method further includes：
Step S414 judges whether TK≤TC4 is true；
Step S415 determines that first throttle unit 2 blocks and restores, control solenoid valve 122 is closed as TK≤TC4.
In embodiment, judge the blocking number of first throttle unit 2 do not reach N0 this, i.e., do not reach often stifled shape also
When state, it is identified below for blocking recovery that the 4th preset temperature TC4 is dropped to according to case temperature TK.
Because when air-conditioner hose no longer blocks, the refrigerant for entering compressor at this time increases, therefore refrigerant is pressed
While contracting, also the cooling capacity of the mechanical part of the compression of compressor is increased, thus the case temperature of compressor can decline,
When dropping to such as 80 DEG C or less of the 4th preset temperature value TC4, then it is judged as that the pipeline of compressor is not blocking, at this time control electricity
Magnet valve 122 is closed, and the second throttling unit 12 is allowed to be disconnected from pipeline, is still worked with first throttle unit 2.
Further, the 5th embodiment based on air-conditioner control method of the present invention, air-conditioner control method of the present invention
In 7th embodiment, as shown in figure 9, when N >=N0 is invalid, air-conditioner control method further includes：
Step S416 judges whether Icomp >=I0 is true；
Step S417 determines that first throttle unit 2 blocks and restores, control solenoid valve 122 is closed as Icomp >=I0.
Same sixth embodiment needs to control the closing of solenoid valve 122 when compressor is closed, if air-conditioner hose is no longer sent out
Raw the refrigerant for entering compressor at this time increases when blocking, thus acting increases when the mechanical part of compressor is compressed, pressure
The power of contracting machine can increase thus its running current Icomp and rise, when its running current Icomp rises to preset value such as 1A or more
When, then it is judged as that the pipeline of compressor is not blocking, controls solenoid valve 122 at this time and close, allow the second throttling unit 12 from pipeline
Middle disconnection is still worked with first throttle unit 2.
The present invention also proposes a kind of controller of air conditioner, and as shown in Figure 10, which includes indoor unit 200 and outdoor unit
100, which is transducer air conditioning, wherein has indoor controller 210 on indoor unit 200, the control for receiving air conditioner
Instruction, indoor machine controller 210 also receives the indoor environment temperature value T1 that environment temperature sensor 250 detects, and receives
The evaporator coil temperature value T2 that the flat coil temperature sensor of indoor evaporator 260 detects, and control the indoor unit of air conditioner
The stepper motor work of such as inner blower 220, controlled level wind guide strip 230 is loaded, outdoor unit 100 is also equipped with outdoor controller
110, driven compressor module 120 and outer wind turbine drive module 140 are additionally provided on outdoor unit, and driven compressor module 120 exists
Control compressor 150 is run under the control of outdoor controller 110, and outer wind turbine drive module is controlled in outdoor controller 110
The outer wind turbine 160 of lower control is run, and is the parameter value that also receiving sensor detects of outdoor controller 110, is specifically included sensing chamber
The temperature sensor T3 of external condenser coil temperature value T3, the temperature sensor T4 of detection outdoor environment temperature value T4, detection pressure
The sensor 1A0 of the 150 outlet air temperature TP of sensor 190 and detection compressor of 150 case temperature value TK of contracting machine, indoor control
Device 210 is established by electric current loop with outdoor controller 110 and is communicated, the above-mentioned parameter value that outdoor controller 210 can will detect
Occur to indoor machine controller 110, indoor machine controller 110 sends the outdoor control instruction of air conditioner to outdoor controller
110 load such as compressor 150, outer wind turbine 160,110 work of four-way valve to control outdoor unit.Wherein indoor machine controller or
Outdoor controller unit is as shown in figure 11, which includes memory 20, processor 10 and be stored on memory 20 simultaneously
The air conditioner control program 30 that can be run on processor 10, air conditioner control program 30 are realized when being executed by processor 10
State the air conditioner cooling activation control method in embodiment.
Such as air conditioner control program 30 can be used for executing the finger of the air conditioner cooling activation control method in following steps
It enables：
Step S100 detects and obtains the case temperature value TK of compressor 5；
Step S200, judges TK>Whether TC1 is true, and wherein TC1 is the first preset temperature value, and TC1>135℃；
Step S300, works as TK>TC1 and when the duration is more than tm1, determines that first throttle unit 2 blocks, controls solenoid valve
122 open so that the second throttling unit 12 accesses air-conditioner hose, and wherein tm1 is the first preset time, and 8 minutes<tm1<12
Minute.
The present invention also proposes a kind of computer read/write memory medium, and as shown in figure 11, which is situated between
Matter is stored with the control method program 30 of air conditioner, which can connect with controller of air conditioner 10
The memory 20 connect, or can or the pocket memory used such as USB flash disk, SD can be moved such as FLASH memory
Card etc., above-mentioned memory 20 can also integrate in the controller 30, in order to control the internal memory of device 30.Air conditioner controls program
The air conditioner cooling activation control method in above-described embodiment is realized when being executed by processor.
For example, air conditioner control program can be used for executing the instruction that the air conditioner in following steps starts control method：
Step S100 detects and obtains the case temperature value TK of compressor 5；
Step S200, judges TK>Whether TC1 is true, and wherein TC1 is the first preset temperature value, and TC1>135℃；
Step S300, works as TK>TC1 and when the duration is more than tm1, determines that first throttle unit 2 blocks, controls solenoid valve
122 open so that the second throttling unit 12 accesses air-conditioner hose, and wherein tm1 is the first preset time, and 8 minutes<tm1<12
Minute.
In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc.
Refer to specific method, device or feature described in conjunction with this embodiment or example be contained at least one embodiment of the present invention or
In example.In the present specification, a schematic expression of the above terms does not necessarily refer to the same embodiment or example.And
And specific features, method, apparatus or the feature of description can be in any one or more of the embodiments or examples with suitable sides
Formula combines.In addition, without conflicting with each other, those skilled in the art can will be described in this specification different real
The feature for applying example or example and different embodiments or examples is combined.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (12)
1. a kind of air-conditioner outdoor unit, the air-conditioner outdoor unit includes sequentially connected compressor, four-way valve, outdoor heat exchanger
With first throttle unit, the first throttle unit has the port for being connect with air conditioner room unit, which is characterized in that described
Air conditioner further includes：
Second throttling unit, second throttling unit include the throttle part and solenoid valve being connected in series with each other, and described second
Throttling unit is parallel to first throttle unit both ends and forms refrigerant bypass, and the solenoid valve is for controlling by the refrigerant
The opening and closing on road.
2. air-conditioner outdoor unit as described in claim 1, which is characterized in that the first throttle unit is capillary or electricity
Sub- expansion valve, and/or, second throttling unit is capillary.
3. a kind of air conditioner, which is characterized in that the air conditioner includes indoor unit, temperature sensor, controller and as right is wanted
Ask the air-conditioner outdoor unit described in 1 or 2, the indoor unit that indoor heat exchanger, the both ends of the indoor set heat exchanger and institute are set
It states four-way valve and the first throttle unit connects one to one, the temperature sensor is used to detect the shell temperature on compressor
Degree, wherein
The controller, for determining that the first throttle unit is blocked in the temperature parameter detected according to the temperature sensor
When, it controls the solenoid valve and opens so that the refrigerant in the second throttling unit air-conditioner hose throttles.
4. a kind of air-conditioner control method, the indoor unit and outdoor unit of air conditioner are by first throttle unit and with described first
Second throttling unit of throttling unit parallel connection connects, and second throttling unit includes the throttle part and electricity being connected in series with each other
Magnet valve is provided with the sensor for detecting the compression case temperature on the compressor of the air conditioner, which is characterized in that described
Air-conditioner control method includes：
Obtain the case temperature value TK of the compressor；
Judge TK>Whether TC1 is true, and wherein TC1 is the first preset temperature value, and TC1>135℃；
Work as TK>TC1 and when the duration is more than tm1, determines that the first throttle unit blocks, control the solenoid valve open with
Make second throttling unit access air-conditioner hose, wherein tm1 is the first preset time, and 8 minutes<tm1<12 minutes.
5. air-conditioner control method as claimed in claim 4, which is characterized in that the first throttle unit is capillary, when
TK>When TC1 is invalid, the air-conditioner control method further includes：
Detect the continuous operating time tcn of compressor；
Judge TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2≤122 DEG C；
Work as TC2<When TK≤TC1, tcn is judged>Whether tm2 is true, and wherein tm2 is the second preset time, and 38 minutes<tm1<43
Minute；
Work as tcn>When tm2, detects and obtain the running current value Icomp of compressor and the outlet air temperature TP of compressor；
Judge Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<tm1<1.5A；
Work as Icomp<When I0, TP is judged>Whether TC3 is true, and wherein TC3 is third preset temperature value, and 89≤TC3≤92 DEG C；
Work as TP>TC3 and when the duration is more than third preset time t m3, determines that the first throttle unit blocks, described in control
Solenoid valve is opened so that second throttling unit accesses the air-conditioner hose, wherein 0.5 minute<tm3<2 minutes.
6. air-conditioner control method as claimed in claim 5, which is characterized in that work as Icomp<When I0, TP is judged>TC3 not at
Immediately, the air-conditioner control method further includes：
Judge TC4<TP≤TC3, wherein TC4 are the 4th preset temperature value, and 78 DEG C≤TC4≤82 DEG C；
Work as TC4<TP≤TC3 and when the duration is more than the 4th preset time t m4, determines that the first throttle unit blocks, control
The solenoid valve is made to open so that second throttling unit accesses the air-conditioner hose system work, wherein 18 minutes<tm4
<24 minutes.
7. air-conditioner control method as claimed in claim 4, which is characterized in that first throttle unit is electric expansion valve, when
TK>When TC1 is invalid, the air-conditioner control method further includes：
Judge TC2<Whether TK≤TC1 is true, and wherein TC2 is the second preset temperature value, and 118 DEG C≤TC2≤122 DEG C；
Work as TC2<When TK≤TC1, the continuous operating time tcn of compressor is detected and obtained, and judges tcn>Whether tm2 is true,
Wherein tm2 is the second preset time, and 38 minutes<tm1<43 minutes；
Work as tcn>When tm2, the running current value Icomp of compressor is detected and obtained；
Judge Icomp<Whether I0 is true, and wherein I0 is the first pre-set current value, and 0.8A<I0<1.5A；
Work as Icomp<When I0, the current opening value D of the electric expansion valve is obtained, and judges whether D ＞ Dmax-D1 are true,
Middle Dmax is the maximum opening value of electric expansion valve operation, and D1 is default opening value, and 70 steps<D1<90 steps；
As D ＞ Dmax-D1 and when the duration is more than third preset time t m3, determine that the first throttle unit blocks, control
The solenoid valve is opened so that second throttling unit accesses the air-conditioner hose, wherein 0.5 minute<tm3<2 minutes.
8. such as claim 4-7 any one of them air-conditioner control methods, which is characterized in that judging the first throttle list
Member blocks, control the solenoid valve open so that second throttling unit access the air-conditioner hose system work step it
After further include：
To judging that the times N that first throttle unit blocks adds up；
When compressor is again turned on, judge whether N >=N0 is true, wherein N0 is preset times value, and 2≤N0≤5；
As N >=N0, determine that the first throttle unit is that often stifled state, control solenoid valve are opened so that the second throttling unit
Access air-conditioner hose system.
9. air-conditioner control method as claimed in claim 8, which is characterized in that when N >=N0 is invalid, the air conditioner control
Method processed further includes：
When the compressor is again turned on, judge whether TK≤TC2 is true；
As TK≤TC2, determines that the first throttle unit blocks and restore, control the solenoid valve and close.
10. air-conditioner control method as claimed in claim 8, which is characterized in that when N >=N0 is invalid, the air conditioner
Control method further includes：
Judge whether Icomp >=I0 is true；
As Icomp >=I0, determines that the first throttle unit blocks and restore, control the solenoid valve and close.
11. a kind of controller of air conditioner, which is characterized in that indoor unit or outdoor unit in air conditioner is arranged in the controller
Interior, the controller includes memory, processor and is stored on the memory and can run on the processor
Air conditioner controls program, and the air conditioner control program is realized when being executed by the processor as any in claim 4 to 10
Air-conditioner control method described in.
12. a kind of computer readable storage medium, which is characterized in that be stored with air conditioner on the computer readable storage medium
Program is controlled, the air conditioner control program realizes the sky as described in any one of claim 4 to 10 when being executed by processor
The step of adjusting device control method.
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|---|---|---|---|
| CN201810418598.4A CN108679779B (en) | 2018-05-03 | 2018-05-03 | Air conditioner outdoor unit, air conditioner, control method, controller and storage medium |
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|---|---|---|---|
| CN201810418598.4A CN108679779B (en) | 2018-05-03 | 2018-05-03 | Air conditioner outdoor unit, air conditioner, control method, controller and storage medium |
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