CN106546420B - Valve body detection method and device, the air-conditioning system of air-conditioning model machine - Google Patents
Valve body detection method and device, the air-conditioning system of air-conditioning model machine Download PDFInfo
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- CN106546420B CN106546420B CN201610886143.6A CN201610886143A CN106546420B CN 106546420 B CN106546420 B CN 106546420B CN 201610886143 A CN201610886143 A CN 201610886143A CN 106546420 B CN106546420 B CN 106546420B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
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Abstract
The invention discloses a kind of valve body detection methods of air-conditioning model machine, comprising: when receiving detection instruction, control air-conditioning model machine is opened and operated under preset service condition；Air-conditioning model machine operates in when reaching first time threshold under preset service condition, controls air-conditioning model machine valve body to be detected and opens, and runs second time threshold；Obtain the temperature variation that the valve body opens front and back；When the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold, judge that the valve body is working properly.The invention also discloses valve body detection method, detection device, the air-conditioning systems of a kind of multi-online air-conditioning system.The present invention realizes the automatic detection to air conditioner valve, and the detection efficiency for avoiding artificial detection is low.
Description
Technical field
The present invention relates to field of air conditioning more particularly to valve body detection method and device, the air-conditioning systems of air-conditioning model machine.
Background technique
Air conditioner production process all has to pass through workshop factory testing before factory, in the detection process, except needs are to pressure
Contracting machine, blower, control program and operating parameter also need to detect each valve body in system, judge valve outside being monitored
Whether body can be normally-open or be closed.
The way of major part producer is to be gone to experience valve body with hand when valve body powers on/off using artificial judgment at present
Whether movement is had.In the detection process of the valve body, human factor is affected, and be easy to cause erroneous judgement, comes into the market to air conditioner
After be likely to occur uncontrollable influence.
Summary of the invention
The main purpose of the present invention is to provide valve body detection method and device, the air-conditioning system of a kind of air-conditioning model machine, purports
Realizing the automatic detection to air conditioner valve, the detection efficiency for avoiding artificial detection is low.
To achieve the above object, the present invention provides a kind of valve body detection methods of air-conditioning model machine, comprising the following steps:
When receiving detection instruction, control air-conditioning model machine is opened and is operated under preset service condition；
Air-conditioning model machine operates in when reaching first time threshold under preset service condition, obtains air-conditioning model machine operation front and back
The temperature variation of the valve body；
When the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or equal to the second preset temperature threshold
When, judge that the valve body generates leakage；
When the temperature variation of the air-conditioning model machine operation front and back valve body is less than the second preset temperature threshold, control
Air-conditioning model machine valve body to be detected is opened, and runs second time threshold；
Obtain the temperature variation that the valve body opens front and back；
When the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold, the valve body work is judged
Normally.
Preferably, in the air-conditioning model machine, valve body to be detected is multiple, and each valve body to be detected is being detected
When, air-conditioning model machine operates under service condition corresponding with the valve body to be detected.
In addition, to achieve the above object, it is described more the embodiment of the invention provides a kind of valve body detection method of multi-connected machine
Online includes outdoor unit and indoor unit, and the outdoor unit includes compressor, oil eliminator, four-way valve, outdoor heat exchanger, the first electricity
Magnet valve, restricting element, gas-liquid separator, and the high pressure valve, the low pressure valve that are connect with indoor unit；Wherein first solenoid valve with
After the restricting element is arranged in parallel, one end is connected to outdoor heat exchanger, and the other end is connected to high pressure valve；The air conditioning multi-couple machine
Valve body detection method includes the following steps:
When receiving detection instruction, control multi-gang air-conditioner runs heating mode；
When operation of air conditioner heating mode reaches the first preset time, air-conditioning system operation front and back first solenoid valve is obtained
Temperature variation, and according to the temperature variation of first solenoid valve judge first solenoid valve with the presence or absence of leakage；
When judging first solenoid valve, there is no when leakage, control the first solenoid valve unlatching；
When air-conditioning continues to run heating mode and reaches the second preset time, the temperature that first solenoid valve opens front and back is obtained
Spend variable quantity；
When the temperature variation that first solenoid valve opens front and back is greater than third preset temperature threshold, described the is judged
One electromagnetic valve work is normal.
Preferably, the outdoor unit includes second solenoid valve, and one end is connected to the high pressure valve, the other end and the gas-liquid
The arrival end of separator is connected to；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of:
After first solenoid valve detection, the first solenoid valve of control is closed, and multi-gang air-conditioner operation refrigeration
Mode；
When operation of air conditioner refrigeration mode reaches third preset time, controls the second solenoid valve and open；
When air-conditioning continues to run four preset time of refrigeration mode, the temperature change that the second solenoid valve opens front and back is obtained
Change amount；
When the temperature variation that the second solenoid valve opens front and back is greater than four preset temperature thresholds, described the is judged
Two electromagnetic valve works are normal.
Preferably, the outdoor unit includes third solenoid valve, and one end is connected to the oil eliminator oil return opening, the other end with
The return line of the compressor is connected to；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of:
After second solenoid valve detection, controls the second solenoid valve and close；
When air-conditioning continues to run refrigeration mode and reaches five preset times, controls the third solenoid valve and open；
When air-conditioning continues to run refrigeration mode and reaches six preset times, the temperature that the third solenoid valve opens front and back is obtained
Spend variable quantity；
When the temperature variation that the third solenoid valve opens front and back is greater than five preset temperature thresholds, described the is judged
Three electromagnetic valve works are normal.
Preferably, the outdoor unit includes the 4th solenoid valve, the outlet of one end and the gas-liquid separator, the other end
Connect the connecting node of the second solenoid valve Yu the high pressure valve；The valve body detection method of the air conditioning multi-couple machine further include with
Lower step:
After third solenoid valve detection, controls the 4th solenoid valve and close；
When air-conditioning continues to run refrigeration mode and reaches seven preset times, controls the 4th solenoid valve and open；
When air-conditioning continues to run refrigeration mode and reaches eight preset times, the temperature that the 4th solenoid valve opens front and back is obtained
Spend variable quantity；
When the temperature variation that the 4th solenoid valve opens front and back is greater than six preset temperature thresholds, described the is judged
Four electromagnetic valve works are normal.
In addition, to achieve the above object, the embodiment of the invention also provides a kind of detection device of air-conditioning model machine, the skies
Adjusting model machine includes indoor unit and outdoor unit, and is provided with valve body on the refrigerant pipeline of the outdoor unit, cold for disconnecting or being connected
Matchmaker's pipeline；The detection device includes control module, temperature acquisition module, judgment module；
The control module is used for, and when receiving detection instruction, control air-conditioning model machine is opened and operates in preset fortune
Under the conditions of row；It controls air-conditioning model machine valve body to be detected to open, and runs preset time；
The temperature acquisition module is used for, and is obtained the temperature variation of the air-conditioning model machine operation front and back valve body and is obtained institute
State the temperature variation that valve body opens front and back；
The judgment module is used for, when the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold
When, judge that the valve body is working properly；
The judgment module is also used to: when the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or waits
When the second preset temperature threshold, judge that the valve body generates leakage.
Preferably, the air-conditioning model machine is multi-connected machine, and the outer machine of the multi-connected machine is equipped with multiple valve bodies；The control
Module is also used to: when being detected, control air-conditioning model machine operates in and the valve body pair to be detected each valve body to be detected
Under the service condition answered.
Preferably, the control module is receiving detection instruction, successively detects to each valve body to be detected.
In addition, to achieve the above object, the embodiment of the invention also provides a kind of air-conditioning system, the air-conditioning system includes
Indoor unit, outdoor unit are provided with valve body on the refrigerant pipeline of the outdoor unit；The air-conditioning system further include to the valve body into
The detection device of row detection, and the detection device is above-mentioned detection device.
The present invention is opened or closed by application valve body, and opens the refrigerant temperature in the refrigerant pipeline of front and back according to valve body
Variation, judges whether valve body works normally, to realize the automatic detection of valve body, and no longer needs through artificial detection, especially
It both ensure that the quality of valve body, the detection efficiency in turn avoiding artificial detection is low for the detection of the front valve shell of air-conditioning factory
Under.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the flow diagram of the valve body detection method first embodiment of air-conditioning model machine of the invention；
Fig. 2 is that the valve body of air-conditioning model machine of the invention detects the flow diagram of second embodiment；
Fig. 3 is the structural schematic diagram of one embodiment of multi-connected machine of the present invention；
Fig. 4 is the flow diagram of one embodiment of valve body detection method of multi-connected machine of the present invention；
Fig. 5 is the functional block diagram of one embodiment of valve body detection device of air-conditioning model machine of the present invention.
The realization, the function and the advantages of the object of the present invention will be described further referring to attached drawing in conjunction with the embodiments.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that directionality instruction (such as up, down, left, right, before and after ...) if it exists in the embodiment of the present invention, then
It is only used for explaining relative positional relationship, the motion conditions etc. between component each under a certain particular pose, if the specific appearance
When state changes, then directionality instruction also correspondingly changes correspondingly.
If being used for description purposes only in addition, being related to the description of " first ", " second " etc. in the present invention, and cannot
It is interpreted as its relative importance of indication or suggestion or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In addition, the skill between each embodiment
Art scheme can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when technical solution
In conjunction with occur it is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also do not wanted in the present invention
Within the protection scope asked.
The present invention mainly proposes that a kind of valve body detection scheme of air-conditioning is realized especially before air-conditioning system factory to sky
The automatic detection of valve body is adjusted, the detection efficiency for avoiding artificial detection is low.The valve body of the air-conditioning mainly includes solenoid valve, is had
The state opened or closed.In this valve body detection scheme, in the operation of air-conditioning, by being controlled to opening or closing for valve body
System, and the refrigerant temperature in the refrigerant pipeline of front and back is opened according to valve body and is changed, judge whether valve body works normally.
Above-mentioned air-conditioning may include multiple types, according to the installation method may include on-hook, cabinet-type air conditioner, ceiling machine, window machine, mobile sky
It adjusts, embedded type air conditioner；It may include frequency changer and determining frequency machine by working principle；It may include that domestic air conditioning and commercialization are empty by use environment
It adjusts；It may include single cold type, single warm type or cold-warm type according to running environment；It may include one-to-one according to indoor unit and outdoor unit quantity
Air-conditioning and one drags more air-conditionings, i.e. one-to-one air-conditioning refers to an outdoor unit and an indoor unit；One drags more air-conditionings to refer to a room
Outer machine and multiple indoor units.
As shown in Figure 1, the embodiment of the present invention proposes a kind of one embodiment of valve body detection method of air-conditioning model machine.The implementation
The valve body detection method of example can be realized based on hardware circuit, can also be real based on the sequence of commands that can be stored in storage medium
It is existing.And the detection device that the valve body detection method is based on can be independently arranged, and may also be arranged on the control panel of air-conditioning model machine.
Specifically, which can comprise the following steps that
Step S110, when receiving detection instruction, control air-conditioning model machine is opened and is operated under preset service condition；
The valve body detection method can be applied in each air-conditioning model machine to be detected with valve body.When user needs to carry out valve
When physical examination is surveyed, detection instruction is issued to detection device.When detection device receives the detection instruction, first controls air-conditioning model machine and open
And it operates under preset service condition.The service condition may include the operational mode of air-conditioning, such as refrigeration or heating etc.；
And operating parameter of air-conditioning, such as compressor frequency, rotation speed of fan etc..In the embodiment of the present invention, each valve to be detected
Body has corresponding service condition, is correspondingly arranged according to the setting position of each valve body and function.
Step S120, air-conditioning model machine operates in when reaching first time threshold under preset service condition, controls to be detected
Air-conditioning model machine valve body open, and run second time threshold；
In the present embodiment, control air-conditioning model machine operates under preset service condition and continuous service first time threshold
When, reach the state that can carry out valve body detection.At this point, air-conditioning model machine is stable, carrying out valve body detection at this time can be quasi-
Really judge whether valve body is working properly.When controlling the unlatching of air-conditioning model machine valve body and continuous service second time threshold, valve body is opened
It has acted on air-conditioning model machine.In the embodiment of the present invention, the value range of the first time threshold is [50s, 90s], second
The value range of time threshold is [5s, 15s].
Step S130, the temperature variation that the valve body opens front and back is obtained；
Before control air-conditioning model machine valve body is opened, the temperature T at valve body is obtainedBefore opening, opened in control air-conditioning model machine valve body
And after continuing second time threshold, then obtain the temperature T at valve bodyAfter opening.The temperature that valve body opens front and back is subjected to phase difference operation,
Obtain the temperature variation that valve body opens front and back.
Step S140, when the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold, judge institute
It is working properly to state valve body.
If valve body can be normally-open, valve body, which opens front and back temperature, has corresponding variation.In the embodiment of the present invention, pass through
First preset temperature threshold carries out valve body judgement whether working properly.I.e. when the temperature variation that valve body opens front and back is greater than the
When one preset temperature threshold, valve body is working properly；When the temperature variation that valve body opens front and back is less than or equal to the first default temperature
When spending threshold value, valve body operation irregularity.The value range of first preset temperature threshold is [2 DEG C, 10 DEG C].
The embodiment of the present invention in due course by operation of air conditioner, open by application valve body, and detects valve body and open front and back
Temperature variation, judge whether valve body working properly according to temperature variation.Therefore, the embodiment of the present invention realizes valve body
Automatic detection, solves when carrying out artificial detection to the air-conditioning model machine before factory in the prior art that detection efficiency is low, manually at
This high problem.
Further, as shown in Fig. 2, the embodiment of the invention also provides the valve bodies of air-conditioning model machine to detect second embodiment.
In the valve body detection method of the embodiment, before step S120 further include:
Step S150, air-conditioning model machine operates in when reaching first time threshold under preset service condition, obtains air-conditioning sample
The temperature variation of the machine operation front and back valve body；
Step S160, it is preset when the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or equal to second
When temperature threshold, judge that the valve body generates leakage.
When detecting to the valve body of air-conditioning model machine, there may be can not be normally-open or can not normal switching-off for valve body
State.Therefore, in the present embodiment, under air-conditioning model machine operates in preset service condition and when reaching first time threshold, first
Obtain the temperature variation of air-conditioning model machine operation front and back valve body.I.e. before operation of air conditioner, the temperature T of valve body is obtainedBefore operation；Air-conditioning fortune
After going and reaching first time threshold, the temperature T of valve body is obtainedAfter operation, and the temperature of the two is subjected to phase difference operation, obtain valve body
Run the temperature variation of front and back.The temperature variation and second preset temperature threshold of front and back valve body are run according to air-conditioning model machine
Comparison result carries out the judgement whether valve body generates leakage.If judging, valve body does not generate leakage, whether just to continue valve body
Normally open detection.I.e. when the temperature variation of the air-conditioning model machine operation front and back valve body is less than the second preset temperature threshold
When, it controls air-conditioning model machine valve body to be detected and opens, and run second time threshold.
It is understood that above-mentioned air-conditioning model machine valve body detection only describes the process of valve body detection.Air-conditioning in fact
In there are multiple valve bodies, can be according to detection instruction, to specified when for carrying out valve body detection there are the air-conditioning of multiple valve bodies
Valve body to be detected is detected；Or according to detection instruction, successively each valve body to be detected is detected, until all
Valve body detects completion.The valve body detection that the air-conditioning system of more valve bodies carries out by taking multi-online air-conditioning system as an example, will be described below
Process.
As shown in figure 3, the multi-online air-conditioning system of an embodiment includes outdoor unit 100 and indoor unit (not shown), it is described
Outdoor unit 110 includes compressor 11, oil eliminator 12, four-way valve 13, outdoor heat exchanger 14, restricting element 16, gas-liquid separator
17, and the high pressure valve 18, the low pressure valve 19 that are connect with indoor unit.Port a is connected to the gas vent of oil eliminator 12, port b
It is connected to outdoor heat exchanger 14, port c is connected to low pressure valve 19, the inlet communication of port d and gas-liquid separator 17.Gas-liquid separation
The outlet of device 17 is connected to the gas returning port of compressor 11.
Above-mentioned high pressure valve 18 and the correspondence of low pressure valve 19 are connected to indoor unit, so that outdoor unit and indoor unit form refrigerant circulation
Circuit.For the multi-online air-conditioning system during refrigerating operaton, refrigerant passes through the compression of compressor 11, generates high temperature and pressure
Gas from the port a to port b of four-way valve 13, carried out into outdoor heat exchanger 14 after the oil separation of oil eliminator 12
It exchanges heat, after the throttling action using restricting element 16, the indoor heat exchanger for entering the room machine exchanges heat, then by low pressure valve
19, the port c to port d of four-way valve 13, into gas-liquid separator 17, after the gas liquid separating function of gas-liquid separator 17,
It returns to compressor 11 and carries out refrigerant circulation.It is understood that air-conditioning system is in heating process, refrigerant circulation direction with
The refrigerant circulation of refrigerating operaton process is contrary.
With continued reference to Fig. 3, above-mentioned air-conditioning system may also include the first solenoid valve 15, second solenoid valve 20, third solenoid valve
21, the 4th solenoid valve 22.Wherein, after first solenoid valve 15 is arranged in parallel with restricting element 16, one end and outdoor heat exchanger
14 connections, the other end are connected to high pressure valve 18.One end of second solenoid valve 20 is connected to the high pressure valve 18, the other end with it is described
The arrival end of gas-liquid separator 17 is connected to.One end of third solenoid valve 21 is connected to the oil return opening of the oil eliminator 12, another
End is connected to the return line of the compressor 11.The outlet of one end of 4th solenoid valve 22 and the gas-liquid separator 17 connects
Logical, the other end connects the connecting node of the second solenoid valve 20 and the high pressure valve 18.
It is understood that above-mentioned Fig. 3 is only used as an embodiment of multi-online air-conditioning system, it is not used to limit multi-connected machine
The structure of air-conditioning system.Based on the multi-online air-conditioning system, the embodiment of the present invention will propose a kind of based on the multi-gang air-conditioner system
The valve body detection method of system.As shown in figure 4, the present invention proposes that a kind of valve body detection method one of multi-online air-conditioning system is implemented
Example.The valve body that the valve body detection method is applied to multi-online air-conditioning system, especially outdoor unit detects.The valve body detection method packet
Include following steps:
Step S210, when receiving detection instruction, control multi-gang air-conditioner runs heating mode；
Step S220, it when operation of air conditioner heating mode reaches the first preset time, controls first solenoid valve and opens；
Step S230, it when air-conditioning continues to run heating mode and reaches the second preset time, obtains first solenoid valve and opens
Open the temperature variation of front and back；
Step S240, when the temperature variation that first solenoid valve opens front and back is greater than third preset temperature threshold,
Judge that first electromagnetic valve work is normal.
The corresponding operation of air conditioner condition of first solenoid valve 15 is heating mode, i.e., when receiving detection instruction, controls more
Online air-conditioning system runs heating mode.By operation of air conditioner to it is appropriate when, the first solenoid valve 15 of control is opened, and is obtained
Take the first solenoid valve 15 open front and back temperature variation, according to the temperature change compared with third preset temperature threshold knot
Fruit determines whether the first solenoid valve 15 is working properly.It is understood that may also include that air-conditioning is transported before above-mentioned steps S220
When row heating mode reaches the first preset time, the temperature variation of the first solenoid valve 15 of air-conditioning system operation front and back is obtained, and
Judge the first solenoid valve 15 with the presence or absence of leakage according to the temperature variation of first solenoid valve 15.When judging the first solenoid valve not
There are leakages, then control the unlatching of the first solenoid valve 15.
In above-described embodiment, the value range of the first preset time is [45s, 55s], preferably 50s, the second preset time
Value range be [10s, 20s], preferably 15s.The value range of third preset temperature threshold is more than or equal to 2 DEG C.It needs
It is noted that the first preset time is to carry out timing to air-conditioner operation time running heating mode since air-conditioning system, the
Two preset times are to carry out timing to air-conditioner operation time opening since the first solenoid valve 15.
Step S250, after first solenoid valve detects, the first solenoid valve of control is closed, and multi-gang air-conditioner
Run refrigeration mode；
In one embodiment, after the first solenoid valve 15 carries out abnormality detection, no matter the testing result of first solenoid valve 15
What is, the detection of second solenoid valve 20 will be carried out.The closing of the first solenoid valve 20 is controlled, and controls multi-gang air-conditioner by the
Two solenoid valves 20 detect corresponding service condition operation, i.e. control multi-gang air-conditioner runs refrigeration mode.
When in another embodiment, carrying out abnormality detection in the first solenoid valve 15, and being detected as working normally, second is just carried out
The detection of solenoid valve 20.When the first solenoid valve 15 is detected as abnormal, then stop being detected.When at this time according to the operation of air-conditioning
Between then can determine whether that the first solenoid valve 15 is abnormal.
Step S260, it when operation of air conditioner refrigeration mode reaches third preset time, controls the second solenoid valve and opens；
Step S270, when air-conditioning continues to run four preset time of refrigeration mode, before obtaining the second solenoid valve unlatching
Temperature variation afterwards；
Step S280, when the temperature variation that the second solenoid valve opens front and back is greater than four preset temperature thresholds,
Judge that the second solenoid valve is working properly.
The corresponding operation of air conditioner condition of second solenoid valve 20 is refrigeration mode, i.e., after the first solenoid valve 15 detects,
It controls multi-online air-conditioning system and runs refrigeration mode.By operation of air conditioner to it is appropriate when, control two solenoid valves 20 open,
And the temperature variation that second solenoid valve 20 opens front and back is obtained, according to the temperature change compared with the 4th preset temperature threshold
As a result, determining whether second solenoid valve 20 is working properly.It is understood that may also include that air-conditioning before above-mentioned steps S260
When operation refrigeration mode reaches third preset time, the temperature variation of air-conditioning system operation front and back second solenoid valve 20 is obtained,
And judge second solenoid valve 20 with the presence or absence of leakage according to the temperature variation of the second solenoid valve 20.When judging second solenoid valve
20 are not present leakage, then control the unlatching of second solenoid valve 20.
In above-described embodiment, the value range of third preset time is [55s, 65s], preferably 60s, the 4th preset time
Value range be [1s, 10s], preferably 5s.The value range of 4th preset temperature threshold is more than or equal to 10 DEG C.It needs
Illustrate, third preset time be since air-conditioning system run refrigeration mode to air-conditioner operation time carry out timing, the 4th
Preset time is to carry out timing to air-conditioner operation time opening since second solenoid valve 20.
Step S290, it after the second solenoid valve detects, controls the second solenoid valve and closes；
In one embodiment, after second solenoid valve 20 carries out abnormality detection, no matter the testing result of the second solenoid valve 20
What is, the detection of third solenoid valve 21 will be carried out.That is control second solenoid valve 20 is closed, and controls multi-gang air-conditioner by the
Three solenoid valves 21 detect corresponding service condition operation, i.e. control multi-gang air-conditioner runs refrigeration mode.
When in another embodiment, carrying out abnormality detection in second solenoid valve 20, and being detected as working normally, third is just carried out
The detection of solenoid valve 21.When second solenoid valve 20 is detected as abnormal, then stop being detected.When at this time according to the operation of air-conditioning
Between then can determine whether that second solenoid valve 20 is abnormal.
Step S300, it when air-conditioning continues to run refrigeration mode and reaches five preset times, controls the third solenoid valve and opens
It opens；
Step S310, it when air-conditioning continues to run refrigeration mode and reaches six preset times, obtains the third solenoid valve and opens
Open the temperature variation of front and back；
Step S320, when the temperature variation that the third solenoid valve opens front and back is greater than five preset temperature thresholds,
Judge that the third electromagnetic valve work is normal.
The corresponding operation of air conditioner condition of third solenoid valve 21 is refrigeration mode, i.e., after second solenoid valve 20 detects,
It controls multi-online air-conditioning system and runs refrigeration mode.By operation of air conditioner to it is appropriate when, control three solenoid valves 21 open,
And the temperature variation that third solenoid valve 21 opens front and back is obtained, according to the temperature change compared with the 5th preset temperature threshold
As a result, determining whether third solenoid valve 21 is working properly.It is understood that may also include that air-conditioning before above-mentioned steps S300
When running cold mode and reaching five preset times, the temperature variation of air-conditioning system operation front and back third solenoid valve 21 is obtained, and
Judge third solenoid valve 21 with the presence or absence of leakage according to the temperature variation of the third solenoid valve 21.When judging third solenoid valve 21
There is no leakages, then control the unlatching of third solenoid valve 21.
In above-described embodiment, the value range of the 5th preset time is [65s, 75s], preferably 70s, the 6th preset time
Value range be [5s, 15s], preferably 10s.The value range of 5th preset temperature threshold is more than or equal to 5 DEG C.It needs
Illustrate, the 5th preset time is after detecting from second solenoid valve 20, and air-conditioning system continues to run refrigeration mode and starts
Timing is carried out to air-conditioner operation time, the 6th preset time is to carry out opening since third solenoid valve 21 to air-conditioner operation time
Timing.
Step S330, it after the third solenoid valve detects, controls the 4th solenoid valve and closes；
In one embodiment, after third solenoid valve 21 carries out abnormality detection, no matter the testing result of the third solenoid valve 21
What is, the detection of the 4th solenoid valve 22 will be carried out.That is control third solenoid valve 21 is closed, and controls multi-gang air-conditioner by the
Four solenoid valves 22 detect corresponding service condition operation, i.e. control multi-gang air-conditioner runs refrigeration mode.
When in another embodiment, carrying out abnormality detection in third solenoid valve 21, and being detected as working normally, the 4th is just carried out
The detection of solenoid valve 21.When third solenoid valve 21 is detected as abnormal, then stop being detected.When at this time according to the operation of air-conditioning
Between then can determine whether that third solenoid valve 21 is abnormal.
Step S340, it when air-conditioning continues to run refrigeration mode and reaches seven preset times, controls the 4th solenoid valve and opens
It opens；
Step S350, it when air-conditioning continues to run refrigeration mode and reaches eight preset times, obtains the 4th solenoid valve and opens
Open the temperature variation of front and back；
Step S360, when the temperature variation that the 4th solenoid valve opens front and back is greater than six preset temperature thresholds,
Judge that the 4th electromagnetic valve work is normal.
The corresponding operation of air conditioner condition of 4th solenoid valve 22 is refrigeration mode, i.e., after third solenoid valve 21 detects,
Control multi-online air-conditioning system continues to run refrigeration mode.By operation of air conditioner to it is appropriate when, control four solenoid valves 22
It opens, and obtains the temperature variation that the 4th solenoid valve 22 opens front and back, according to the temperature change and the 6th preset temperature threshold
Comparison result, determine whether the 4th solenoid valve 22 working properly.It is understood that can also be wrapped before above-mentioned steps S340
It includes: when operation of air conditioner heating mode reaches the first preset time, obtaining the temperature of air-conditioning system operation front and back third solenoid valve 21
Variable quantity, and judge third solenoid valve 21 with the presence or absence of leakage according to the temperature variation of the third solenoid valve 21.When judging
There is no leakages for three solenoid valves 21, then control the unlatching of the 4th solenoid valve 22.
In above-described embodiment, the value range of the 7th preset time is [85s, 95s], preferably 90s, the 8th preset time
Value range be [10s, 20s], preferably 15s.The value range of 6th preset temperature threshold is more than or equal to 5 DEG C.It needs
It is noted that the 5th preset time is after detecting from third solenoid valve 21, air-conditioning system continues to run refrigeration mode and opens
Begin to air-conditioner operation time carry out timing, the 6th preset time be since the 4th solenoid valve 22 open to air-conditioner operation time into
Row timing.
Corresponding above-mentioned valve body detection method, the embodiment of the present invention also provide a kind of detection device of air-conditioning model machine.The air-conditioning
Model machine may include indoor unit and outdoor unit, and the refrigerant pipeline of the outdoor unit is equipped with valve body, to disconnect or be connected refrigerant pipe
Road.Such as multi-online air-conditioning system shown in Fig. 3, first the 15, second electricity of solenoid valve is respectively equipped on the refrigerant pipeline of outdoor unit
Magnet valve 20, third solenoid valve 21, the 4th solenoid valve 22.It should be noted that air-conditioning model machine does not limit setting for above-mentioned solenoid valve
It sets.The detection device can be independently arranged, and may also be arranged on the control panel of air-conditioning model machine.It, can if detection device is independently arranged
After being detected to air-conditioning model machine, reused.If detection device is arranged on the control panel of air-conditioning model machine, avoid
Route installation before detection, i.e., with the air-conditioning system of the detection device.
Specifically, as shown in figure 5, the detection device includes control module 110, temperature acquisition module 120, judgment module
130.Wherein, temperature acquisition module 120 can carry out temperature acquisition using the temperature sensor being arranged on valve body to be detected.Control
Module 110 is used for, and when receiving detection instruction, control air-conditioning model machine is opened and operated under preset service condition；Control
Air-conditioning model machine valve body to be detected is opened, and runs preset time.Temperature acquisition module 120 according to the control of control module 110,
The temperature before valve body is opened and the temperature after valve body unlatching are obtained respectively, and obtain the temperature change that the valve body opens front and back
Amount, i.e. valve body open the difference of the temperature of front and back.Judgment module 130 receives temperature change acquired in temperature acquisition module 120
Amount, and the temperature variation is compared with the first preset temperature threshold, when the valve body opens the temperature variation of front and back
When greater than the first preset temperature threshold, then judge that the valve body is working properly；Otherwise judge valve body operation irregularity.
Further, above-mentioned temperature acquisition module 120 is also used to: obtaining the temperature of the air-conditioning model machine operation front and back valve body
Variable quantity.Above-mentioned judgment module 130 is also used to: when the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or
When equal to the second preset temperature threshold, judge that the valve body generates leakage.
Control of the temperature acquisition module 120 according to control module 110, temperature and sky before obtaining the operation of air-conditioning model machine respectively
The postrun temperature of model machine is adjusted, and obtains the temperature variation of air-conditioning model machine operation front and back valve body, i.e. air-conditioning model machine operation front and back
Temperature difference.Judgment module 130 receives temperature variation acquired in temperature acquisition module 120, and by the temperature change
Amount is compared with the second preset temperature threshold,
Further, above-mentioned air-conditioning model machine can be multi-connected machine, and the outer machine of the multi-connected machine is equipped with multiple valve bodies, such as schemes
Shown in 3.At this point, each valve body to be detected is when being detected, control module 110 will control air-conditioning model machine operate in it is described
Under the corresponding service condition of valve body to be detected.As described above, when the valve body of the first solenoid valve 15 in Fig. 3 detects, air-conditioning model machine
Operate in heating mode；Second solenoid valve 20, third solenoid valve 21, the 4th solenoid valve 22 valve body detection when, air-conditioning model machine fortune
Row is in refrigeration mode.Moreover, can separately be detected to each valve body when the detection of multiple valve bodies.For example, issuing to first
The valve body detection instruction of solenoid valve 15 issues the valve body detection instruction to second solenoid valve 20.It is of course also possible to successively to each
Valve body to be detected is detected.For example, when control module 110 receives detection instruction, it is first right according to preset detection ordering
First solenoid valve 15 is detected, and after the first solenoid valve 15 detects, is detected to second solenoid valve 20, second solenoid valve
After 20 detections, third solenoid valve 21 is detected, and so on, until all valve bodies have detected.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all 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 (10)
1. a kind of valve body detection method of air-conditioning model machine, which comprises the following steps:
When receiving detection instruction, control air-conditioning model machine is opened and is operated under preset service condition；
Air-conditioning model machine operates in when reaching first time threshold under preset service condition, obtains described in air-conditioning model machine operation front and back
The temperature variation of valve body；
When the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or equal to the second preset temperature threshold, sentence
The valve body that breaks generates leakage；
When the temperature variation of the air-conditioning model machine operation front and back valve body is less than the second preset temperature threshold, control to be checked
The air-conditioning model machine valve body of survey is opened, and runs second time threshold；
Obtain the temperature variation that the valve body opens front and back；
When the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold, the valve body work is being judged just
Often.
2. the valve body detection method of air-conditioning model machine as described in claim 1, which is characterized in that be checked in the air-conditioning model machine
The valve body of survey is multiple, and each valve body to be detected is when being detected, and air-conditioning model machine operates in and the valve body to be detected
Under corresponding service condition.
3. a kind of valve body detection method of multi-connected machine, the multi-connected machine includes outdoor unit and indoor unit, and the outdoor unit includes pressure
Contracting machine, oil eliminator, four-way valve, outdoor heat exchanger, the first solenoid valve, restricting element, gas-liquid separator, and connect with indoor unit
High pressure valve, the low pressure valve connect；After wherein first solenoid valve and the restricting element are arranged in parallel, one end and outdoor heat exchanger
Connection, the other end are connected to high pressure valve；It is characterized in that, detection method includes the following steps for the valve body of the air conditioning multi-couple machine:
When receiving detection instruction, control multi-gang air-conditioner runs heating mode；
When operation of air conditioner heating mode reaches the first preset time, the temperature of air-conditioning system operation front and back first solenoid valve is obtained
Variable quantity is spent, and judges first solenoid valve with the presence or absence of leakage according to the temperature variation of first solenoid valve；
When judging first solenoid valve, there is no when leakage, control the first solenoid valve unlatching；
When air-conditioning continues to run heating mode and reaches the second preset time, obtains first solenoid valve and open the temperature of front and back and become
Change amount；
When the temperature variation that first solenoid valve opens front and back is greater than third preset temperature threshold, first electricity is judged
Magnet valve is working properly.
4. the valve body detection method of multi-connected machine as claimed in claim 3, which is characterized in that the outdoor unit includes the second electromagnetism
Valve, one end are connected to the high pressure valve, and the other end is connected to the arrival end of the gas-liquid separator；The valve of the air conditioning multi-couple machine
Body detecting method is further comprising the steps of:
After first solenoid valve detection, the first solenoid valve of control is closed, and multi-gang air-conditioner runs refrigeration mode；
When operation of air conditioner refrigeration mode reaches third preset time, controls the second solenoid valve and open；
When air-conditioning continues to run four preset time of refrigeration mode, the temperature change that the second solenoid valve opens front and back is obtained
Amount；
When the temperature variation that the second solenoid valve opens front and back is greater than four preset temperature thresholds, second electricity is judged
Magnet valve is working properly.
5. the valve body detection method of multi-connected machine as claimed in claim 4, which is characterized in that the outdoor unit includes third electromagnetism
Valve, one end are connected to the oil eliminator oil return opening, and the other end is connected to the return line of the compressor；The air conditioning multi-couple
The valve body detection method of machine is further comprising the steps of:
After second solenoid valve detection, controls the second solenoid valve and close；
When air-conditioning continues to run refrigeration mode and reaches five preset times, controls the third solenoid valve and open；
When air-conditioning continues to run refrigeration mode and reaches six preset times, obtains the third solenoid valve and open the temperature of front and back and become
Change amount；
When the temperature variation that the third solenoid valve opens front and back is greater than five preset temperature thresholds, the third electricity is judged
Magnet valve is working properly.
6. the valve body detection method of multi-connected machine as claimed in claim 5, which is characterized in that the outdoor unit includes the 4th electromagnetism
Valve, the outlet of one end and the gas-liquid separator, the other end connect the connection of the second solenoid valve Yu the high pressure valve
Node；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of:
After third solenoid valve detection, controls the 4th solenoid valve and close；
When air-conditioning continues to run refrigeration mode and reaches seven preset times, controls the 4th solenoid valve and open；
When air-conditioning continues to run refrigeration mode and reaches eight preset times, obtains the 4th solenoid valve and open the temperature of front and back and become
Change amount；
When the temperature variation that the 4th solenoid valve opens front and back is greater than six preset temperature thresholds, the 4th electricity is judged
Magnet valve is working properly.
7. a kind of valve body detection device of air-conditioning model machine, the air-conditioning model machine includes indoor unit and outdoor unit, and the outdoor unit
Refrigerant pipeline on be provided with valve body, for disconnecting or being connected refrigerant pipeline；It is characterized in that, the detection device includes control
Module, temperature acquisition module, judgment module；
The control module is used for, and when receiving detection instruction, control air-conditioning model machine is opened and operates in preset operation item
Under part；It controls air-conditioning model machine valve body to be detected to open, and runs preset time；
The temperature acquisition module is used for, and the temperature variation and the valve body for obtaining the air-conditioning model machine operation front and back valve body are opened
Open the temperature variation of front and back；
The judgment module is used for, and when the temperature variation that the valve body opens front and back is greater than the first preset temperature threshold, is sentenced
The valve body that breaks is working properly；
The judgment module is also used to: when the temperature variation of the air-conditioning model machine operation front and back valve body is greater than or equal to the
When two preset temperature thresholds, judge that the valve body generates leakage.
8. the valve body detection device of air-conditioning model machine as claimed in claim 7, which is characterized in that the air-conditioning model machine is multi-joint
Machine, and the outer machine of the multi-connected machine is equipped with multiple valve bodies；The control module is also used to: each valve body to be detected is carrying out
When detection, control air-conditioning model machine is operated under service condition corresponding with the valve body to be detected.
9. the valve body detection device of air-conditioning model machine as claimed in claim 8, which is characterized in that the control module is receiving
Detection instruction successively detects each valve body to be detected.
10. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes indoor unit, outdoor unit, the refrigerant of the outdoor unit
Valve body is provided on pipeline；The air-conditioning system further includes the detection device detected to the valve body, and the detection fills
It is set to the described in any item detection devices of claim 7-9.
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| CN107702271B (en) * | 2017-08-30 | 2020-02-04 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and processing method of supercooling pipe set of air conditioner |
| CN108088039B (en) * | 2017-11-27 | 2020-03-27 | 芜湖美智空调设备有限公司 | Air conditioner inspection control method and control device, storage medium and remote control equipment |
| CN111025138B (en) * | 2019-12-16 | 2021-08-20 | 华为技术有限公司 | Detection device and server |
| CN113970439B (en) * | 2020-07-24 | 2023-12-22 | 广东美的暖通设备有限公司 | Enthalpy-increasing jet system and auxiliary road valve body detection method and device thereof |
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| CN103090504A (en) * | 2011-11-04 | 2013-05-08 | 珠海格力电器股份有限公司 | Air conditioner and detection method and device thereof |
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| CN103090504A (en) * | 2011-11-04 | 2013-05-08 | 珠海格力电器股份有限公司 | Air conditioner and detection method and device thereof |
| CN103575514A (en) * | 2012-07-26 | 2014-02-12 | 珠海格力电器股份有限公司 | Air conditioner and detection method and device thereof |
| CN104048798A (en) * | 2014-06-20 | 2014-09-17 | 四川长虹电器股份有限公司 | One-way valve leakage detection method and air conditioner |
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