CN106546420A - The valve body detection method of air-conditioning model machine and device, air conditioning system - Google Patents
The valve body detection method of air-conditioning model machine and device, air conditioning system Download PDFInfo
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- CN106546420A CN106546420A CN201610886143.6A CN201610886143A CN106546420A CN 106546420 A CN106546420 A CN 106546420A CN 201610886143 A CN201610886143 A CN 201610886143A CN 106546420 A CN106546420 A CN 106546420A
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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 method of air-conditioning model machine, including：When detection instruction is received, control air-conditioning model machine is opened and is operated under default service condition；When air-conditioning model machine operates in default service condition and is issued to very first time threshold value, control air-conditioning model machine valve body to be detected and open, and run the second time threshold；Obtain the temperature variation before and after the valve body is opened；When temperature variation before and after the valve body is opened is more than the first preset temperature threshold value, judge that the valve body is working properly.The invention also discloses a kind of valve body detection method of multi-online air-conditioning system, detection means, air conditioning system.The present invention realizes automatic detection to air conditioner valve, it is to avoid the detection efficiency of manual detection is low.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to the valve body detection method and device, air conditioning system of air-conditioning model machine.
Background technology
Air-conditioner production process, all has to pass through workshop factory testing before dispatching from the factory, in detection process, except needs are to pressure
Outside contracting machine, blower fan, control program and operational factor are monitored, each valve body in also needing to system is detected, judges valve
Whether body can be normally-open or be closed.
The way of major part producer is to adopt artificial judgment at present, goes to experience valve body with handss when valve body powers on/off
Whether action is had.In the detection process of the valve body, anthropic factor affects larger, easily causes erroneous judgement, air-conditioner is come into the market
After be likely to occur uncontrollable impact.
The content of the invention
Present invention is primarily targeted at providing a kind of valve body detection method and device, air conditioning system of air-conditioning model machine, purport
Realizing automatic detection to air conditioner valve, it is to avoid the detection efficiency of manual detection is low.
For achieving the above object, the invention provides a kind of valve body detection method of air-conditioning model machine, comprises the following steps：
When detection instruction is received, control air-conditioning model machine is opened and is operated under default service condition；
When air-conditioning model machine operates in default service condition and is issued to very first time threshold value, air-conditioning model machine to be detected is controlled
Valve body is opened, and runs the second time threshold；
Obtain the temperature variation before and after the valve body is opened；
When temperature variation before and after the valve body is opened is more than the first preset temperature threshold value, the valve body work is judged
Normally.
Preferably, when the air-conditioning model machine operates in default service condition and is issued to very first time threshold value, control to be checked
The air-conditioning model machine valve body of survey also includes before opening：
Obtain the temperature variation of the valve body before and after air-conditioning model machine runs；
Before and after air-conditioning model machine operation, the temperature variation of the valve body is more than or equal to the second preset temperature threshold value
When, judge that the valve body produces leakage；
When before and after air-conditioning model machine operation, the temperature variation of the valve body is less than the second preset temperature threshold value, control
Air-conditioning model machine valve body to be detected is opened.
Preferably, in the air-conditioning model machine, valve body to be detected is multiple, and each valve body to be detected detected
When, air-conditioning model machine is operated under service condition corresponding with the valve body to be detected.
Additionally, a kind of valve body detection method of multi-connected machine for achieving the above object, is embodiments provided, it is described many
It is online including off-premises station and indoor set, the off-premises station includes compressor, oil eliminator, cross valve, outdoor heat exchanger, first electric
Magnet valve, restricting element, gas-liquid separator, and be connected with indoor set high pressure valve, low pressure valve；Wherein described first electromagnetic valve with
After the restricting element is arranged in parallel, one end is connected with outdoor heat exchanger, and the other end is connected with high pressure valve；The air conditioning multi-couple machine
Valve body detection method comprise the following steps：
When detection instruction is received, control multi-gang air-conditioner operation heating mode；
When operation of air conditioner heating mode reaches the first Preset Time, control first electromagnetic valve and open；
When air-conditioning continues to run with heating mode and reaches the second Preset Time, the temperature before and after first electromagnetic valve is opened is obtained
Degree variable quantity；
When temperature variation before and after first electromagnetic valve is opened is more than the 3rd preset temperature threshold value, described the is judged
One electromagnetic valve work is normal.
Preferably, the off-premises station includes the second electromagnetic valve, and one end is connected with the high pressure valve, the other end and the gas-liquid
The arrival end connection of separator；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of：
After first electromagnetic valve detection terminates, the first closed electromagnetic valve, and multi-gang air-conditioner operation refrigeration are controlled
Pattern；
When operation of air conditioner refrigeration mode reaches three Preset Times, control second electromagnetic valve and open；
When air-conditioning continues to run with four Preset Time of refrigeration mode, obtain the temperature before and after second electromagnetic valve is opened and become
Change amount；
When temperature variation before and after second electromagnetic valve is opened is more than the 4th preset temperature threshold value, described the is judged
Two electromagnetic valve works are normal.
Preferably, the off-premises station includes the 3rd electromagnetic valve, and one end is connected with the oil eliminator oil return opening, the other end with
The return line connection of the compressor；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of：
After second electromagnetic valve detection terminates, second closed electromagnetic valve is controlled；
When air-conditioning continues to run with refrigeration mode and reaches five Preset Times, control the 3rd electromagnetic valve and open；
When air-conditioning continues to run with refrigeration mode and reaches six Preset Times, the temperature before and after the 3rd electromagnetic valve is opened is obtained
Degree variable quantity；
When temperature variation before and after the 3rd electromagnetic valve is opened is more than the 5th preset temperature threshold value, described the is judged
Three electromagnetic valve works are normal.
Preferably, the off-premises station includes the 4th electromagnetic valve, the outlet of one end and the gas-liquid separator, the other end
Connect the connecting node of second electromagnetic valve and the high pressure valve；The valve body detection method of the air conditioning multi-couple machine also include with
Lower step：
After the 3rd electromagnetic valve detection terminates, the 4th closed electromagnetic valve is controlled；
When air-conditioning continues to run with refrigeration mode and reaches seven Preset Times, control the 4th electromagnetic valve and open；
When air-conditioning continues to run with refrigeration mode and reaches eight Preset Times, the temperature before and after the 4th electromagnetic valve is opened is obtained
Degree variable quantity；
When temperature variation before and after the 4th electromagnetic valve is opened is more than the 6th preset temperature threshold value, described the is judged
Four electromagnetic valve works are normal.
Additionally, for achieving the above object, the embodiment of the present invention additionally provides a kind of detection means of air-conditioning model machine, the sky
Model machine is adjusted to include being provided with valve body on indoor set and off-premises station, and the refrigerant pipeline of the off-premises station, it is cold for disconnecting or turning on
Matchmaker's pipeline；The detection means includes control module, temperature acquisition module, judge module；
The control module is used for, and when detection instruction is received, control air-conditioning model machine is opened and operates in default fortune
Under the conditions of row；Control air-conditioning model machine valve body to be detected is opened, and runs Preset Time；
The temperature acquisition module is used for, and obtains the temperature variation before and after the valve body is opened；
The judge module is used for, and the temperature variation before and after the valve body is opened is more than the first preset temperature threshold value
When, judge that the valve body is working properly.
Preferably, the temperature acquisition module is additionally operable to：Obtain the temperature change of the valve body before and after air-conditioning model machine runs
Amount；
The judge module is additionally operable to：Before and after air-conditioning model machine operation, the temperature variation of the valve body is more than or waits
When the second preset temperature threshold value, judge that the valve body produces leakage.
Preferably, the air-conditioning model machine is multi-connected machine, and the outer machine of the multi-connected machine is provided with multiple valve bodies；The control
Module is additionally operable to：When being detected, control air-conditioning model machine is operated 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, and successively each valve body to be detected is detected.
Additionally, for achieving the above object, the embodiment of the present invention additionally provides a kind of air conditioning system, and the air conditioning system includes
Indoor set, off-premises station, are provided with valve body on the refrigerant pipeline of the off-premises station；The air conditioning system also includes entering the valve body
The detection means of row detection, and the detection means is above-mentioned detection device.
The present invention is turned on and off by application valve body, and the refrigerant temperature before and after being opened according to valve body in refrigerant pipeline
Change, judges valve body whether normal work, it is achieved thereby that the automatic detection of valve body, and no longer needs by manual detection, especially
Which is directed to the detection of the front valve shell that air-conditioning dispatches from the factory, and both ensure that the quality of valve body, and the detection efficiency that turn avoid manual detection is low
Under.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the schematic flow sheet of the valve body detection method first embodiment of the air-conditioning model machine of the present invention；
Fig. 2 is the schematic flow sheet that the valve body of the air-conditioning model machine of the present invention detects second embodiment；
Fig. 3 is the structural representation of one embodiment of multi-connected machine of the present invention；
Fig. 4 is the schematic flow sheet of one embodiment of valve body detection method of multi-connected machine of the present invention；
Fig. 5 is the high-level schematic functional block diagram of one embodiment of valve body detection means of air-conditioning model machine of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to accompanying drawing in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that exist in the embodiment of the present invention directivity indicate (such as up, down, left, right, before and after ...),
Which is only used for relative position relation of the explanation under a certain particular pose between each part, motion conditions etc., if the specific appearance
When state changes, then directionality indicates also correspondingly to change therewith.
If in addition, being related to the description of " first ", " second " etc. in the present invention, which is only used for describing purpose, and can not
It is interpreted as indicating or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, the skill between each embodiment
Art scheme can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when technical scheme
With reference to occur it is conflicting or when cannot realize should people think that the combination of this technical scheme is not present, also will in the present invention
Within the protection domain asked.
The present invention mainly proposes a kind of valve body detection scheme of air-conditioning, especially before air conditioning system is dispatched from the factory, realizes to sky
Adjust the automatic detection of valve body, it is to avoid the detection efficiency of manual detection is low.The valve body of the air-conditioning mainly includes electromagnetic valve, has
The state being turned on and off.In this valve body detection scheme, in the operation of air-conditioning, by valve body be turned on and off control
System, and the refrigerant temperature change before and after being opened according to valve body in refrigerant pipeline, judge valve body whether normal work.
Above-mentioned air-conditioning may include polytype, may include on-hook, cabinet-type air conditioner, ceiling machine, window machine, portable sky by mounting means
Tune, embedded type air conditioner；Frequency changer be may include by operation principle and frequency machine is determined；May include that domestic air conditioning and commercialization are empty by use environment
Adjust；Single cold type, single warm type or cold-warm type may include according to running environment；One-to-one may include according to indoor set and off-premises station quantity
Air-conditioning and one drags many air-conditionings, i.e. one-to-one air-conditioning to refer to an off-premises station and an indoor set；One drags many air-conditionings to refer to a room
Outer machine and multiple indoor sets.
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 enforcement
The valve body detection method of example can be realized based on hardware circuit, it is also possible to based on the sequence of commands reality that can be stored in storage medium
It is existing.And the detection means that the valve body detection method is based on can be independently arranged, and may also be arranged on the panel of air-conditioning model machine.
Specifically, the valve body detection method may include following steps：
Step S110, when receive detection instruction when, control air-conditioning model machine open and operate under default service condition；
The valve body detection method is can be applicable to during each has the air-conditioning model machine to be detected of valve body.When user needs to carry out valve
When health check-up is surveyed, detection instruction is sent to detection means.When detection means receives detection instruction, first control air-conditioning model machine and open
And operate under default service condition.The service condition can include the operational mode of air-conditioning, for example freeze or heat etc.；
And the operational factor 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 set location and function of each valve body.
When step S120, air-conditioning model machine operate in default service condition and be issued to very first time threshold value, control to be detected
Air-conditioning model machine valve body open, and run the second time threshold；
In the present embodiment, control air-conditioning model machine is operated under default service condition and continuous service very first time threshold value
When, reaching to carry out the state of valve body detection.Now, air-conditioning model machine is stable, and now carrying out valve body detection can be accurate
Really judge whether valve body is working properly.When control air-conditioning model machine valve body opens simultaneously the second time threshold of continuous service, valve body is opened
Act on air-conditioning model machine.In the embodiment of the present invention, the span of the very first time threshold value is [50s, 90s], second
The span of time threshold is [5s, 15s].
Temperature variation before and after step S130, the acquisition valve body unlatching；
Before control air-conditioning model machine valve body is opened, temperature T at valve body is obtainedBefore opening, open in control air-conditioning model machine valve body
And after continuing the second time threshold, then obtain temperature T at valve bodyAfter opening.Temperature before and after valve body is opened carries out phase difference operation,
Obtain the temperature variation before and after valve body is opened.
When step S140, the temperature variation before and after the valve body is opened are more than the first preset temperature threshold value, institute is judged
State valve body working properly.
If valve body can be normally-open, before and after valve body is opened, temperature has corresponding change.In the embodiment of the present invention, pass through
First preset temperature threshold value carries out valve body judgement whether working properly.Temperature variation i.e. before and after valve body unlatching is more than the
During one preset temperature threshold value, valve body is working properly；Temperature variation before and after valve body is opened is less than or equal to the first default temperature
During degree threshold value, valve body operation irregularity.The span of the first preset temperature threshold value is [2 DEG C, 10 DEG C].
The embodiment of the present invention by operation of air conditioner in due course, open by application valve body, and before and after detecting that valve body is opened
Temperature variation, judge whether valve body working properly according to temperature variation.Therefore, the embodiment of the present invention realizes valve body
Automatic detection, it is low that the air-conditioning model machine before solving in prior art to dispatching from the factory carries out detection efficiency during manual detection, manually into
This high problem.
Further, as shown in Fig. 2 the embodiment of the present invention additionally provides the valve body detection second embodiment of air-conditioning model machine.
In the valve body detection method of the embodiment, also included before step S120：
When step S150, air-conditioning model machine operate in default service condition and be issued to very first time threshold value, air-conditioning sample is obtained
The temperature variation of the valve body before and after machine operation；
Step S160, when the air-conditioning model machine operation before and after the valve body temperature variation more than or equal to second preset
During temperature threshold, judge that the valve body produces leakage.
When detecting to the valve body of air-conditioning model machine, valve body there may be cannot be normally-open or cannot normal switching-off
State.Therefore, in the present embodiment, when air-conditioning model machine is operated under default service condition and reaches very first time threshold value, first
Obtain the temperature variation of valve body before and after air-conditioning model machine runs.I.e. before operation of air conditioner, temperature T of valve body is obtainedBefore operation；Air-conditioning is transported
After going and reaching very first time threshold value, temperature T of valve body is obtainedAfter operation, and both temperature are carried out into phase difference operation, obtain valve body
Temperature variation before and after operation.The temperature variation and the second preset temperature threshold value of valve body before and after being run according to air-conditioning model machine
Comparative result, carries out the judgement whether valve body produces leakage.If judging, valve body does not produce leakage, whether just to proceed valve body
Normally open detection.I.e. before and after air-conditioning model machine operation, the temperature variation of the valve body is less than the second preset temperature threshold value
When, control air-conditioning model machine valve body to be detected and open, and run the second time threshold.
It is understood that above-mentioned air-conditioning model machine valve body detection only describes the flow process of a valve body detection.Air-conditioning in fact
In there are multiple valve bodies, for the air-conditioning that there are multiple valve bodies carry out valve body detect when, can according to detection instruction, to specified
Valve body to be detected is detected；Or according to detection instruction, successively each valve body to be detected is detected, until all of
Valve body is detected and is completed.The valve body detection that the air conditioning system of many valve bodies is carried out below by taking multi-online air-conditioning system as an example, will be described
Process.
As shown in figure 3, the multi-online air-conditioning system of an embodiment includes off-premises station 100 and indoor set (not shown), it is described
Off-premises station 110 includes compressor 11, oil eliminator 12, cross valve 13, outdoor heat exchanger 14, restricting element 16, gas-liquid separator
17, and be connected with indoor set high pressure valve 18, low pressure valve 19.Port a is connected with the gas outlet of oil eliminator 12, port b
Connect with outdoor heat exchanger 14, port c is connected with 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 with the gas returning port of compressor 11.
Above-mentioned high pressure valve 18 and the correspondence of low pressure valve 19 are connected with indoor set, so that off-premises station and indoor set form refrigerant circulation
Loop.During refrigerating operaton, compression of the coolant through compressor 11 produces High Temperature High Pressure to the multi-online air-conditioning system
Gas, through oil eliminator 12 it is separating of oil after, from the port a of cross valve 13 to port b, carry out into outdoor heat exchanger 14
Heat exchange, then after the throttling action of restricting element 16, the indoor heat exchanger for getting in machine is exchanged heat, then by low pressure valve
19th, the port c of cross valve 13 to port d, into gas-liquid separator 17, after the gas liquid separating function of gas-liquid separator 17,
Returning to compressor 11 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 in opposite direction.
With continued reference to Fig. 3, above-mentioned air conditioning system may also include the first electromagnetic valve 15, the second electromagnetic valve 20, the 3rd electromagnetic valve
21st, the 4th electromagnetic valve 22.Wherein, after first electromagnetic valve 15 is arranged in parallel with restricting element 16, one end and outdoor heat exchanger
14 connections, the other end are connected with high pressure valve 18.One end of second electromagnetic valve 20 is connected with the high pressure valve 18, the other end with it is described
The arrival end connection of gas-liquid separator 17.One end of 3rd electromagnetic valve 21 is connected with the oil return opening of the oil eliminator 12, another
End is connected with the return line of the compressor 11.One end of 4th electromagnetic valve 22 is connected with the outlet of the gas-liquid separator 17
Logical, the other end connects the connecting node of second electromagnetic valve 20 and the high pressure valve 18.
It is understood that an embodiments of the above-mentioned Fig. 3 only as multi-online air-conditioning system, 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 detection method is applied to multi-online air-conditioning system, especially the valve body detection of off-premises station.The valve body detection method bag
Include following steps：
Step S210, when receive detection instruction when, control multi-gang air-conditioner operation heating mode；
When step S220, operation of air conditioner heating mode reach the first Preset Time, control first electromagnetic valve and open；
When step S230, air-conditioning continue to run with heating mode and reach the second Preset Time, obtain first electromagnetic valve and open
Temperature variation before and after opening；
When step S240, the temperature variation before and after first electromagnetic valve is opened are more than the 3rd preset temperature threshold value,
Judge that first electromagnetic valve work is normal.
First electromagnetic valve, 15 corresponding operation of air conditioner condition is heating mode, i.e., when detection instruction is received, control many
Online air-conditioning system runs heating mode.By operation of air conditioner to it is appropriate when, the first electromagnetic valve 15 of control is opened, and is obtained
The temperature variation before and after the first electromagnetic valve 15 is opened is taken, is tied according to comparison of the temperature change with the 3rd preset temperature threshold value
Really, determine whether the first electromagnetic valve 15 is working properly.It is understood that may also include before above-mentioned steps S220：Air-conditioning is transported
When row heating mode reaches the first Preset Time, the temperature variation of the first electromagnetic valve 15 before and after air conditioning system operation is obtained, and
Judge the first electromagnetic valve 15 with the presence or absence of leakage according to the temperature variation of first electromagnetic valve 15.When judging the first electromagnetic valve not
There is leakage, then control the first electromagnetic valve 15 and open.
In above-described embodiment, the span of the first Preset Time is [45s, 55s], preferably 50s, the second Preset Time
Span be [10s, 20s], preferably 15s.The span of the 3rd preset temperature threshold value is more than or equal to 2 DEG C.Need
It is noted that the first Preset Time is to start to carry out air-conditioner operation time timing from air conditioning system operation heating mode, the
Two Preset Times are to start to carry out timing to air-conditioner operation time from the first electromagnetic valve 15.
Step S250, after first electromagnetic valve detection terminates, control the first closed electromagnetic valve, and multi-gang air-conditioner
Operation refrigeration mode；
In one embodiment, after the first electromagnetic valve 15 carries out abnormality detection, no matter the testing result of first electromagnetic valve 15
What is, the detection of the second electromagnetic valve 20 will be carried out.Control the first electromagnetic valve 20 to close, and multi-gang air-conditioner is controlled by
Two electromagnetic valves 20 detect corresponding service condition operation, that is, control multi-gang air-conditioner operation refrigeration mode.
In another embodiment, abnormality detection is carried out in the first electromagnetic valve 15, and when being detected as normal work, just carry out second
The detection of electromagnetic valve 20.When the first electromagnetic valve 15 is detected as abnormal, then stop being detected.Now according to during the operation of air-conditioning
Between then can determine whether that the first electromagnetic valve 15 is abnormal.
When step S260, operation of air conditioner refrigeration mode reach three Preset Times, control second electromagnetic valve and open；
When step S270, air-conditioning continue to run with four Preset Time of refrigeration mode, before obtaining the second electromagnetic valve unlatching
Temperature variation afterwards；
When step S280, the temperature variation before and after second electromagnetic valve is opened are more than the 4th preset temperature threshold value,
Judge that second electromagnetic valve work is normal.
Second electromagnetic valve, 20 corresponding operation of air conditioner condition is refrigeration mode, i.e., after the detection of the first electromagnetic valve 15 terminates,
Control multi-online air-conditioning system operation refrigeration mode.By operation of air conditioner to it is appropriate when, control two electromagnetic valves 20 open,
And the temperature variation before and after the second electromagnetic valve 20 is opened is obtained, according to the comparison of the temperature change and the 4th preset temperature threshold value
As a result, determine whether the second electromagnetic valve 20 is working properly.It is understood that may also include before above-mentioned steps S260：Air-conditioning
When operation refrigeration mode reaches three Preset Times, the temperature variation of the second electromagnetic valve 20 before and after air conditioning system operation is obtained,
And judge the second electromagnetic valve 20 with the presence or absence of leakage according to the temperature variation of second electromagnetic valve 20.When judging the second electromagnetic valve
20 do not have leakage, then control the second electromagnetic valve 20 and open.
In above-described embodiment, the span of the 3rd Preset Time is [55s, 65s], preferably 60s, the 4th Preset Time
Span be [1s, 10s], preferably 5s.The span of the 4th preset temperature threshold value is more than or equal to 10 DEG C.Need
Illustrate, the 3rd Preset Time is to start to carry out air-conditioner operation time timing from air conditioning system operation refrigeration mode, the 4th
Preset Time is to start to carry out timing to air-conditioner operation time from the second electromagnetic valve 20.
Step S290, after second electromagnetic valve detection terminates, control second closed electromagnetic valve；
In one embodiment, after the second electromagnetic valve 20 carries out abnormality detection, no matter the testing result of second electromagnetic valve 20
What is, the detection of the 3rd electromagnetic valve 21 will be carried out.Control the second electromagnetic valve 20 to close, and multi-gang air-conditioner is controlled by
Three electromagnetic valves 21 detect corresponding service condition operation, that is, control multi-gang air-conditioner operation refrigeration mode.
In another embodiment, abnormality detection is carried out in the second electromagnetic valve 20, and when being detected as normal work, just carry out the 3rd
The detection of electromagnetic valve 21.When the second electromagnetic valve 20 is detected as abnormal, then stop being detected.Now according to during the operation of air-conditioning
Between then can determine whether that the second electromagnetic valve 20 is abnormal.
When step S300, air-conditioning continue to run with refrigeration mode and reach five Preset Times, control the 3rd electromagnetic valve and open
Open；
When step S310, air-conditioning continue to run with refrigeration mode and reach six Preset Times, obtain the 3rd electromagnetic valve and open
Temperature variation before and after opening；
When step S320, the temperature variation before and after the 3rd electromagnetic valve is opened are more than the 5th preset temperature threshold value,
Judge that the 3rd electromagnetic valve work is normal.
3rd electromagnetic valve, 21 corresponding operation of air conditioner condition is refrigeration mode, i.e., after the detection of the second electromagnetic valve 20 terminates,
Control multi-online air-conditioning system operation refrigeration mode.By operation of air conditioner to it is appropriate when, control three electromagnetic valves 21 open,
And the temperature variation before and after the 3rd electromagnetic valve 21 is opened is obtained, according to the comparison of the temperature change and the 5th preset temperature threshold value
As a result, determine whether the 3rd electromagnetic valve 21 is working properly.It is understood that may also include before above-mentioned steps S300：Air-conditioning
When operation chill formula reaches five Preset Times, the temperature variation of the 3rd electromagnetic valve 21 before and after air conditioning system operation is obtained, and
Judge the 3rd electromagnetic valve 21 with the presence or absence of leakage according to the temperature variation of the 3rd electromagnetic valve 21.When judging the 3rd electromagnetic valve 21
There is no leakage, then control the 3rd electromagnetic valve 21 and open.
In above-described embodiment, the span of the 5th Preset Time is [65s, 75s], preferably 70s, the 6th Preset Time
Span be [5s, 15s], preferably 10s.The span of the 5th preset temperature threshold value is more than or equal to 5 DEG C.Need
Illustrate, the 5th Preset Time be from the second electromagnetic valve 20 detection terminate after, air conditioning system continues to run with refrigeration mode and starts
Timing is carried out to air-conditioner operation time, the 6th Preset Time is to start to carry out air-conditioner operation time from the 3rd electromagnetic valve 21
Timing.
Step S330, after the 3rd electromagnetic valve detection terminates, control the 4th closed electromagnetic valve；
In one embodiment, after the 3rd electromagnetic valve 21 carries out abnormality detection, no matter the testing result of the 3rd electromagnetic valve 21
What is, the detection of the 4th electromagnetic valve 22 will be carried out.Control the 3rd electromagnetic valve 21 to close, and multi-gang air-conditioner is controlled by the
Four electromagnetic valves 22 detect corresponding service condition operation, that is, control multi-gang air-conditioner operation refrigeration mode.
In another embodiment, abnormality detection is carried out in the 3rd electromagnetic valve 21, and when being detected as normal work, just carry out the 4th
The detection of electromagnetic valve 21.When the 3rd electromagnetic valve 21 is detected as abnormal, then stop being detected.Now according to during the operation of air-conditioning
Between then can determine whether that the 3rd electromagnetic valve 21 is abnormal.
When step S340, air-conditioning continue to run with refrigeration mode and reach seven Preset Times, control the 4th electromagnetic valve and open
Open；
When step S350, air-conditioning continue to run with refrigeration mode and reach eight Preset Times, obtain the 4th electromagnetic valve and open
Temperature variation before and after opening；
When step S360, the temperature variation before and after the 4th electromagnetic valve is opened are more than the 6th preset temperature threshold value,
Judge that the 4th electromagnetic valve work is normal.
4th electromagnetic valve, 22 corresponding operation of air conditioner condition is refrigeration mode, i.e., after the detection of the 3rd electromagnetic valve 21 terminates,
Control multi-online air-conditioning system continues to run with refrigeration mode.By operation of air conditioner to it is appropriate when, control four electromagnetic valves 22
Open, and obtain the temperature variation before and after the 4th electromagnetic valve 22 is opened, according to the temperature change and the 6th preset temperature threshold value
Comparative result, determine whether the 4th electromagnetic valve 22 working properly.It is understood that can also wrap before above-mentioned steps S340
Include：When operation of air conditioner heating mode reaches the first Preset Time, the temperature of the 3rd electromagnetic valve 21 before and after air conditioning system operation is obtained
Variable quantity, and judge the 3rd electromagnetic valve 21 with the presence or absence of leakage according to the temperature variation of the 3rd electromagnetic valve 21.When judging
There is no leakage in three electromagnetic valves 21, then control the 4th electromagnetic valve 22 and open.
In above-described embodiment, the span of the 7th Preset Time is [85s, 95s], preferably 90s, the 8th Preset Time
Span be [10s, 20s], preferably 15s.The span of the 6th preset temperature threshold value is more than or equal to 5 DEG C.Need
It is noted that the 5th Preset Time be from the 3rd electromagnetic valve 21 detection terminate after, air conditioning system continues to run with refrigeration mode and opens
Beginning carries out timing to air-conditioner operation time, and the 6th Preset Time is to start to enter air-conditioner operation time from the 4th electromagnetic valve 22
Row timing.
The above-mentioned valve body detection method of correspondence, the embodiment of the present invention also provide a kind of detection means of air-conditioning model machine.The air-conditioning
Model machine may include indoor set and off-premises station, and the refrigerant pipeline of the off-premises station is provided with valve body, to disconnect or turn on refrigerant pipe
Road.Multi-online air-conditioning system for example shown in Fig. 3, is respectively equipped with the first electromagnetic valve 15, second electric on the refrigerant pipeline of off-premises station
Magnet valve 20, the 3rd electromagnetic valve 21, the 4th electromagnetic valve 22.It should be noted that air-conditioning model machine does not limit setting for above-mentioned electromagnetic valve
Put.The detection means can be independently arranged, and may also be arranged on the panel of air-conditioning model machine.If detection means is independently arranged, can
After detecting to air-conditioning model machine, reused.If detection means is arranged on the panel of air-conditioning model machine, avoid
Circuit before detection is installed, i.e. air conditioning system with the detection means.
Specifically, as shown in figure 5, the detection means includes control module 110, temperature acquisition module 120, judge module
130.Wherein, temperature acquisition module 120 enters trip temperature acquisition using the temperature sensor being arranged on valve body to be detected.Control
Module 110 is used for, and when detection instruction is received, control air-conditioning model machine is opened and operated under default service condition；Control
Air-conditioning model machine valve body to be detected is opened, and runs Preset Time.Control of the temperature acquisition module 120 according to 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 before and after the valve body is opened
The difference of the temperature before and after the unlatching of amount, i.e. valve body.Judge module 130 receives the temperature change acquired in temperature acquisition module 120
Amount, and the temperature variation is compared with the first preset temperature threshold value, the temperature variation before and after the valve body is opened
During more than the first preset temperature threshold value, then judge that the valve body is working properly；Otherwise judge valve body operation irregularity.
Further, said temperature acquisition module 120 is additionally operable to：Obtain the temperature of the valve body before and after air-conditioning model machine runs
Variable quantity.Above-mentioned judge module 130 is additionally operable to：When the air-conditioning model machine operation before and after the valve body temperature variation be more than or
During equal to the second preset temperature threshold value, judge that the valve body produces leakage.
Control of the temperature acquisition module 120 according to control module 110, obtains temperature and sky before the operation of air-conditioning model machine respectively
The postrun temperature of tune model machine, and obtain the temperature variation of valve body before and after the operation of air-conditioning model machine, i.e., before and after the operation of air-conditioning model machine
Temperature difference.Judge module 130 receives the temperature variation acquired in temperature acquisition module 120, and by the temperature change
Amount is compared with the second preset temperature threshold value,
Further, above-mentioned air-conditioning model machine can be multi-connected machine, and the outer machine of the multi-connected machine is provided with multiple valve bodies, such as scheme
Shown in 3.Now, 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 electromagnetic valve 15 in Fig. 3 is detected, air-conditioning model machine
Operate in heating mode；When second electromagnetic valve 20, the 3rd electromagnetic valve 21, the valve body of the 4th electromagnetic valve 22 are detected, air-conditioning model machine fortune
Row is in refrigeration mode.And, during the detection of multiple valve bodies, each valve body can separately be detected.For example, send to first
The valve body detection instruction of electromagnetic valve 15, sends the valve body detection instruction to the second electromagnetic valve 20.It is of course also possible to successively to each
Valve body to be detected is detected.For example, it is when control module 110 receives detection instruction, according to default detection ordering, first right
First electromagnetic valve 15 is detected, after the detection of the first electromagnetic valve 15 terminates, the second electromagnetic valve 20 is detected, the second electromagnetic valve
After 20 detections terminate, the 3rd electromagnetic valve 21 is detected, by that analogy, until all of valve body has been detected.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (12)
1. a kind of valve body detection method of air-conditioning model machine, it is characterised in that comprise the following steps：
When detection instruction is received, control air-conditioning model machine is opened and is operated under default service condition；
When air-conditioning model machine operates in default service condition and is issued to very first time threshold value, air-conditioning model machine valve body to be detected is controlled
Open, and run the second time threshold；
Obtain the temperature variation before and after the valve body is opened；
When temperature variation before and after the valve body is opened is more than the first preset temperature threshold value, judge that the valve body just works
Often.
2. the valve body detection method of air-conditioning model machine as claimed in claim 1, it is characterised in that the air-conditioning model machine operates in pre-
If service condition when being issued to very first time threshold value, control also to include before air-conditioning model machine valve body to be detected is opened：
Obtain the temperature variation of the valve body before and after air-conditioning model machine runs；
When before and after air-conditioning model machine operation, the temperature variation of the valve body is more than or equal to the second preset temperature threshold value, sentence
The disconnected valve body produces leakage；
When before and after air-conditioning model machine operation, the temperature variation of the valve body is less than the second preset temperature threshold value, control to be checked
The air-conditioning model machine valve body of survey is opened.
3. the valve body detection method of air-conditioning model machine as claimed in claim 1 or 2, it is characterised in that in the air-conditioning model machine, treat
The valve body of detection is for multiple, and each valve body to be detected is when being detected, air-conditioning model machine is operated in and the side valve to be checked
Under the corresponding service condition of body.
4. the valve body detection method of a kind of multi-connected machine, the multi-connected machine include off-premises station and indoor set, and the off-premises station includes pressure
Contracting machine, oil eliminator, cross valve, outdoor heat exchanger, the first electromagnetic valve, restricting element, gas-liquid separator, and connect with indoor set
The high pressure valve that connects, low pressure valve；After wherein described first electromagnetic valve is arranged in parallel with the restricting element, one end and outdoor heat exchanger
Connection, the other end are connected with high pressure valve；Characterized in that, the valve body detection method of the air conditioning multi-couple machine is comprised the following steps：
When detection instruction is received, control multi-gang air-conditioner operation heating mode；
When operation of air conditioner heating mode reaches the first Preset Time, control first electromagnetic valve and open；
When air-conditioning continues to run with heating mode and reaches the second Preset Time, obtain the temperature before and after first electromagnetic valve is opened and become
Change amount；
When temperature variation before and after first electromagnetic valve is opened is more than the 3rd preset temperature threshold value, judge that described first is electric
Magnet valve is working properly.
5. the valve body detection method of multi-connected machine as claimed in claim 4, it is characterised in that the off-premises station includes the second electromagnetism
Valve, one end are connected with the high pressure valve, and the other end is connected with 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 electromagnetic valve detection terminates, the first closed electromagnetic valve, and multi-gang air-conditioner operation refrigeration mode are controlled；
When operation of air conditioner refrigeration mode reaches three Preset Times, control second electromagnetic valve and open；
When air-conditioning continues to run with four Preset Time of refrigeration mode, the temperature change before and after second electromagnetic valve is opened is obtained
Amount；
When temperature variation before and after second electromagnetic valve is opened is more than the 4th preset temperature threshold value, judge that described second is electric
Magnet valve is working properly.
6. the valve body detection method of multi-connected machine as claimed in claim 5, it is characterised in that the off-premises station includes the 3rd electromagnetism
Valve, one end are connected with the oil eliminator oil return opening, and the other end is connected with 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 electromagnetic valve detection terminates, second closed electromagnetic valve is controlled；
When air-conditioning continues to run with refrigeration mode and reaches five Preset Times, control the 3rd electromagnetic valve and open；
When air-conditioning continues to run with refrigeration mode and reaches six Preset Times, obtain the temperature before and after the 3rd electromagnetic valve is opened and become
Change amount；
When temperature variation before and after the 3rd electromagnetic valve is opened is more than the 5th preset temperature threshold value, judge that the described 3rd is electric
Magnet valve is working properly.
7. the valve body detection method of multi-connected machine as claimed in claim 6, it is characterised in that the off-premises station includes the 4th electromagnetism
Valve, the outlet of one end and the gas-liquid separator, the other end connect the connection of second electromagnetic valve and the high pressure valve
Node；The valve body detection method of the air conditioning multi-couple machine is further comprising the steps of：
After the 3rd electromagnetic valve detection terminates, the 4th closed electromagnetic valve is controlled；
When air-conditioning continues to run with refrigeration mode and reaches seven Preset Times, control the 4th electromagnetic valve and open；
When air-conditioning continues to run with refrigeration mode and reaches eight Preset Times, obtain the temperature before and after the 4th electromagnetic valve is opened and become
Change amount；
When temperature variation before and after the 4th electromagnetic valve is opened is more than the 6th preset temperature threshold value, judge that the described 4th is electric
Magnet valve is working properly.
8. a kind of valve body detection means of air-conditioning model machine, the air-conditioning model machine include indoor set and off-premises station, and the off-premises station
Refrigerant pipeline on be provided with valve body, for disconnecting or turning on refrigerant pipeline；Characterized in that, the detection means includes control
Module, temperature acquisition module, judge module；
The control module is used for, and when detection instruction is received, control air-conditioning model machine is opened and operates in default operation bar
Under part；Control air-conditioning model machine valve body to be detected is opened, and runs Preset Time；
The temperature acquisition module is used for, and obtains the temperature variation before and after the valve body is opened；
The judge module is used for, and when the temperature variation before and after the valve body is opened is more than the first preset temperature threshold value, sentences
The valve body that breaks is working properly.
9. the valve body detection means of air-conditioning model machine as claimed in claim 8, it is characterised in that the temperature acquisition module is also used
In：Obtain the temperature variation of the valve body before and after air-conditioning model machine runs；
The judge module is additionally operable to：Before and after air-conditioning model machine operation, the temperature variation of the valve body is more than or equal to the
During two preset temperature threshold values, judge that the valve body produces leakage.
10. the valve body detection means of air-conditioning model machine as claimed in claim 8 or 9, it is characterised in that the air-conditioning model machine is many
It is online, and the outer machine of the multi-connected machine is provided with multiple valve bodies；The control module is additionally operable to：Each valve body to be detected is entering
During row detection, control air-conditioning model machine is operated under service condition corresponding with the valve body to be detected.
The valve body detection means of 11. air-conditioning model machines as claimed in claim 10, it is characterised in that the control module is being received
To detection instruction, successively each valve body to be detected is detected.
12. a kind of air conditioning systems, it is characterised in that the air conditioning system includes indoor set, off-premises station, the coolant of the off-premises station
Valve body is provided with pipeline；The air conditioning system also includes the detection means detected to the valve body, and the detection dress
The detection means being set to described in any one of claim 8-11.
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| CN201610886143.6A CN106546420B (en) | 2016-10-10 | 2016-10-10 | Valve body detection method and device, the air-conditioning system of air-conditioning model machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088039A (en) * | 2017-11-27 | 2018-05-29 | 芜湖美智空调设备有限公司 | Air conditioner examines control method and control device, storage medium and remote control equipment |
| WO2019042288A1 (en) * | 2017-08-30 | 2019-03-07 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and handling method for super-cooling tubing set thereof |
| CN111025138A (en) * | 2019-12-16 | 2020-04-17 | 华为技术有限公司 | Detection device and server |
| CN113970439A (en) * | 2020-07-24 | 2022-01-25 | 广东美的暖通设备有限公司 | Enhanced vapor injection system and method and device for detecting auxiliary valve body of enhanced vapor injection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08247885A (en) * | 1995-03-09 | 1996-09-27 | Okano Valve Seizo Kk | Abnormality detection device for valve device |
| 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 |
| CN105628351A (en) * | 2014-10-30 | 2016-06-01 | 青岛海信日立空调系统有限公司 | Electronic expansion valve detection method and device |
-
2016
- 2016-10-10 CN CN201610886143.6A patent/CN106546420B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08247885A (en) * | 1995-03-09 | 1996-09-27 | Okano Valve Seizo Kk | Abnormality detection device for valve device |
| 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 |
| CN105628351A (en) * | 2014-10-30 | 2016-06-01 | 青岛海信日立空调系统有限公司 | Electronic expansion valve detection method and device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019042288A1 (en) * | 2017-08-30 | 2019-03-07 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and handling method for super-cooling tubing set thereof |
| CN108088039A (en) * | 2017-11-27 | 2018-05-29 | 芜湖美智空调设备有限公司 | Air conditioner examines control method and control device, storage medium and remote control equipment |
| 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 |
| CN111025138A (en) * | 2019-12-16 | 2020-04-17 | 华为技术有限公司 | Detection device and server |
| US20220307947A1 (en) * | 2019-12-16 | 2022-09-29 | Huawei Technologies Co., Ltd. | Detection apparatus and server |
| EP4043895A4 (en) * | 2019-12-16 | 2022-12-28 | Huawei Technologies Co., Ltd. | Detection apparatus and server |
| CN113970439A (en) * | 2020-07-24 | 2022-01-25 | 广东美的暖通设备有限公司 | Enhanced vapor injection system and method and device for detecting auxiliary valve body of enhanced vapor injection system |
| 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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