CN106918117A - Air conditioner coolant leakage detection method and device - Google Patents
Air conditioner coolant leakage detection method and device Download PDFInfo
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- CN106918117A CN106918117A CN201710120898.XA CN201710120898A CN106918117A CN 106918117 A CN106918117 A CN 106918117A CN 201710120898 A CN201710120898 A CN 201710120898A CN 106918117 A CN106918117 A CN 106918117A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
A kind of air conditioner coolant leakage detection method of the present invention, during operation of air conditioner, including：Obtain indoor coil initial temperature；Obtain indoor actual environment temperature；Obtain indoor coil actual temperature；When compressor continuous operation time is more than or equal to the first setting time, the absolute value that indoor coil initial temperature subtracts the difference of indoor coil actual temperature is less than or equal to the first temperature threshold, when the absolute value that indoor actual environment temperature subtracts the difference of indoor coil actual temperature is less than or equal to second temperature threshold value, determine that air-conditioning occurs secondary refrigerant leakage failure.By the present invention, secondary refrigerant leakage is detected after system stabilization, and compare and analyze respectively at initial coil temperature and indoor environment temperature using actual coil temperature, therefore testing result is more accurately and reliably.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air conditioner coolant leakage detection method and device.
Background technology
The whether sufficient refrigeration or heating effect that can directly influence air-conditioning of coolant quantity in air-conditioning, therefore operation of air conditioner process
In to secondary refrigerant leakage detect it is very necessary.In existing secondary refrigerant leakage detection method, just with indoor coil pipe and setting
Coil temperature relatively judges whether secondary refrigerant leakage, but when refrigerant is not revealed, indoor environment temperature and room
When inner coil pipe temperature difference is larger, indoor coil pipe can also occur drastic change, so as to cause indoor coil pipe with setting coil pipe
Temperature difference is huge and erroneous judgement occurs secondary refrigerant leakage, therefore refrigerant detection method logic judgment of the prior art is single, holds very much
Easily judge by accident.
The content of the invention
The embodiment of the invention provides a kind of air conditioner coolant leakage detection method and device, it is intended to solve secondary refrigerant leakage easy
The problem judged by accident.In order to some aspects to the embodiment for disclosing have a basic understanding, shown below is simple
Summarize.The summarized section is not extensive overview, nor to determine key/critical component or describe the guarantor of these embodiments
Shield scope.Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
First aspect according to embodiments of the present invention, there is provided a kind of air conditioner coolant leakage detection method, in operation of air conditioner
During refrigeration mode, including：Obtain indoor coil initial temperature；Obtain indoor actual environment temperature；Obtain indoor coil reality
Border temperature；When compressor continuous operation time is more than or equal to the first setting time, indoor coil initial temperature subtracts indoor coil
The absolute value of the difference of actual temperature is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the actual temperature of indoor coil
When the absolute value of the difference of degree is less than or equal to second temperature threshold value, determine that air-conditioning occurs secondary refrigerant leakage failure.
A kind of second aspect according to embodiments of the present invention, there is provided air conditioner coolant leak detection apparatus, including：Coil temperature
Sensor, for obtaining indoor coil initial temperature and indoor coil actual temperature；Environment temperature sensor, for obtaining interior
Environment temperature；Timer, for obtaining compressor continuous operation time；Processor, in operation of air conditioner refrigeration mode process
In, when compressor continuous operation time is more than or equal to the first setting time, indoor coil initial temperature subtracts indoor coil reality
The absolute value of the difference of temperature is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the difference of indoor coil actual temperature
Absolute value be less than or equal to second temperature threshold value when, determine air-conditioning occur secondary refrigerant leakage failure.
Wherein, indoor coil initial temperature characterizes the temperature of indoor coil when air-conditioning just brings into operation, and now air-conditioning is firm
Bring into operation refrigeration mode, and the refrigerant in air-conditioning not yet exchanges heat completely, therefore indoor coil initial temperature is higher.Work as interior
When the absolute value that coil pipe initial temperature subtracts the difference of indoor coil actual temperature is less than or equal to the first temperature threshold, indoor disk is illustrated
Pipe initial temperature and indoor coil actual temperature are closer to, when indoor actual environment temperature subtracts the difference of indoor coil actual temperature
Absolute value be less than or equal to second temperature threshold value when, illustrate interior actual environment temperature and indoor coil actual temperature more connect
Closely, it was demonstrated that the heat exchange amount of current air-conditioning is relatively low, and air-conditioning occurs secondary refrigerant leakage failure.By the present invention, to cold after system stabilization
Matchmaker's leakage detected, and compared respectively at initial coil temperature and indoor environment temperature using actual coil temperature and
Analysis, therefore testing result is more accurately and reliably.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets implementation of the invention
Example, and be used to explain principle of the invention together with specification.
Fig. 1 is a kind of schematic flow sheet of the air conditioner coolant leakage detection method according to an exemplary embodiment；
Fig. 2 is a kind of structural representation of the air conditioner coolant leak detection apparatus according to an exemplary embodiment；
Description of reference numerals：1st, coil temperature sensor；2nd, environment temperature sensor；3rd, timer；4th, processor.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional, and
And the order of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The gamut of the scope of embodiment of the present invention including claims, and claims institute
There is obtainable equivalent.Herein, each embodiment can individually or generally be represented that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than, it is not meant to automatically limit the scope of the application
It is any single invention or inventive concept.Herein, such as first and second or the like relational terms are used only for one
Entity or operation make a distinction with another entity or operation, exist between these entities or operation without requiring or implying
Any actual relation or order.And, term " including ", "comprising" or its any other variant be intended to it is non-exclusive
Property include so that process, method or equipment including a series of key elements not only include those key elements, but also including
Other key elements being not expressly set out.Each embodiment herein is described by the way of progressive, and each embodiment is stressed
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For example disclosed method, product etc., because it is corresponding with method part disclosed in embodiment, so the comparing of description is simple
Single, related part is referring to method part illustration.
The embodiment of the invention provides a kind of air conditioner coolant leakage detection method and device, it is intended to solve secondary refrigerant leakage easy
The problem judged by accident.
As shown in figure 1, in air conditioner coolant leakage detection method provided in an embodiment of the present invention, when operation of air conditioner refrigeration mould
During formula, including：
Step S101：Obtain indoor coil initial temperature.
Step S102：Obtain indoor actual environment temperature.
Step S103：Obtain indoor coil actual temperature.
Step S104：When compressor continuous operation time is more than or equal to the first setting time, indoor coil initial temperature
Subtract the absolute value of difference of indoor coil actual temperature less than or equal to the first temperature threshold, indoor actual environment temperature subtracts indoor disk
When the absolute value of the difference of pipe actual temperature is less than or equal to second temperature threshold value, determine that air-conditioning occurs secondary refrigerant leakage failure.
Wherein indoor coil initial temperature characterizes the temperature of indoor coil when air-conditioning just brings into operation, and now air-conditioning is just opened
Begin operation refrigeration mode, and the refrigerant in air-conditioning not yet exchanges heat completely, therefore indoor coil initial temperature is higher；Indoor coil
Actual temperature is current coil temperature, and indoor actual environment temperature is current indoor environment temperature.When compressor continuously runs
When time is more than or equal to the first setting time, illustrate that air-conditioning opens refrigerating operaton a period of time, operation of air conditioner enters stabilization
State, current indoor actual environment temperature is relatively stable, and coil temperature sensor and environment temperature sensor operation enter stabilization
Running status, the indoor coil actual temperature for collecting and indoor actual environment temperature are relatively reliable, when indoor coil is initially warm
When the absolute value that degree subtracts the difference of indoor coil actual temperature is less than or equal to the first temperature threshold, indoor coil initial temperature is illustrated
It is closer to indoor coil actual temperature, the absolute value of the difference for subtracting indoor coil actual temperature when indoor actual environment temperature is small
When second temperature threshold value, illustrate that indoor actual environment temperature and indoor coil actual temperature are closer to, it was demonstrated that when
It is preceding that not because indoor actual environment temperature is too high, indoor coil heat exchange causes indoor coil actual temperature to be rapidly heated, therefore
Can illustrate that current indoor coil pipe actual temperature is too high, the heat exchange amount reduction of air-conditioning, air-conditioning occurs secondary refrigerant leakage failure.By this
Invention, detects after system stabilization to secondary refrigerant leakage, and using actual coil temperature respectively at initial coil temperature and room
Interior environment temperature is compared and analyzed, therefore testing result is more accurately and reliably.
First temperature threshold can set according to the actual requirements, it should be noted that if the first temperature threshold mistake of setting
Greatly, when operation of air conditioner freezes, initial coil temperature is higher, and actual coil temperature is relatively low under refrigerating operaton, at the beginning of indoor coil
Though the difference that beginning temperature subtracts indoor coil actual temperature can be less than or equal to the first temperature threshold, now air-conditioning may be simultaneously
Generation secondary refrigerant leakage, so as to be susceptible to erroneous judgement；If the first temperature threshold of setting is too small, it is difficult to detect indoor coil
Initial temperature subtracts indoor coil actual temperature less than or equal to the first temperature threshold, therefore can cause air conditioner coolant detection method
It is insensitive, it is difficult to detect that air conditioner coolant is revealed.It is exemplary, the first temperature threshold can with but be not limited to be set in 2
DEG C between 6 DEG C, in this case, when indoor coil initial temperature subtracts the difference of indoor coil actual temperature less than or equal to the first temperature
During degree threshold value, can preferably realize that secondary refrigerant leakage is detected, will not both judge by accident, will not also work as when refrigerant is revealed and occur
Missing inspection, it is ensured that the accuracy of secondary refrigerant leakage testing result.
Second temperature threshold value can be set according to the actual requirements, it should be noted that if the second temperature threshold of setting
Value is excessive, and when operation of air conditioner freezes, indoor environment temperature is higher, and coil temperature is relatively low, and indoor actual environment temperature is subtracted
Although indoor coil actual temperature is less than or equal to second temperature threshold value, now air-conditioning may not occur secondary refrigerant leakage, because
This is susceptible to erroneous judgement；If the second temperature threshold value of setting is too small, it is difficult to detect that indoor actual environment temperature subtracts indoor disk
Pipe actual temperature is less than or equal to second temperature threshold value, it is difficult to judge indoor actual environment temperature and indoor coil actual temperature
It is closer to, therefore air conditioner coolant detection method can be caused insensitive, it is difficult to detects that air conditioner coolant is revealed, it is exemplary
, second temperature threshold value can carry out value between 2 DEG C to 6 DEG C, in this case, when indoor environment temperature subtracts indoor coil reality
When the difference of border temperature is less than or equal to second temperature threshold value, can preferably realize that secondary refrigerant leakage is detected, will not both judge by accident,
Also will not work as when refrigerant is revealed and missing inspection occurs, it is ensured that the accuracy of secondary refrigerant leakage testing result.
, it should be understood that those skilled in the art can be on the basis of technical scheme disclosed in the embodiment of the present invention, by limited
The means such as the experiment of number of times, it is determined that suitable first temperature threshold and second temperature threshold value, of the invention not limit this.
First setting time can be set according to the actual requirements, such as when running state of air conditioner is preferable, shorter
Steady operational status can just be entered in time, the first setting time can take 20 minutes, 18 minutes or shorter, when the air-conditioning life-span
It is more long, when running status is poor, steady operational status could be entered after the operation of air conditioner long period, first setting time can be with
Take 22 minutes, 25 minutes or longer.
Optionally in the above-described embodiments, step S104 also includes：In operation of air conditioner refrigeration mode, when compressor is continuous
The duration of runs is more than or equal to the first setting time, and indoor actual environment temperature is more than or equal to cryogenic temperature setting value, room
Inner coil pipe initial temperature subtracts the absolute value of the difference of indoor coil actual temperature less than or equal to the first temperature threshold, and indoor reality
When the absolute value that environment temperature subtracts the difference of indoor coil actual temperature is less than or equal to second temperature threshold value, determine that air-conditioning occurs cold
Matchmaker reveals failure.
When indoor actual environment temperature is more than or equal to cryogenic temperature setting value, illustrate that current indoor temperature is higher, it is empty
Allocation and transportation row refrigeration mode, therefore secondary refrigerant leakage detection is carried out, it is empty when indoor actual environment temperature is less than cryogenic temperature setting value
Tune is not turned on refrigeration mode, and refrigerant is not revealed, even if therefore indoor coil initial temperature subtracts indoor coil actual temperature
Poor absolute value is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the exhausted of the difference of indoor coil actual temperature
Not can determine whether that air conditioner coolant occurs leakage failure when being less than or equal to second temperature threshold value to value yet, therefore the present invention is only in sky
Tune to open to open and secondary refrigerant leakage detection can be just run in the case that refrigeration is likely to occur secondary refrigerant leakage, can either ensure that secondary refrigerant leakage is examined
The validity of survey, additionally it is possible to avoid energy waste, will not often report refrigerant fault impact customer experience again.
Cryogenic temperature setting value cryogenic temperature setting value can specifically be set according to actually used demand, for example, work as sky
When tune is operated in normal domestic use environment, user can set to cryogenic temperature setting value, for example cryogenic temperature setting value
32 DEG C, 28 DEG C, 26 DEG C can be taken, 25 DEG C etc., when indoor actual environment temperature is more than or equal to cryogenic temperature setting value, illustrates to work as
Preceding indoor environment temperature is higher, and secondary refrigerant leakage detection method is in the case of operation of air conditioner refrigeration, such as when operation of air conditioner is in machine
When in the environment special to environment temperature requirement such as room, user can also be set according to the actual requirements, as long as according to interior
Actual environment temperature can interpolate that out that current indoor environment temperature is higher more than or equal to cryogenic temperature setting value, and operation of air conditioner exists
Under refrigeration mode.
In any of the above-described embodiment, step S104 also includes：When operation of air conditioner heating mode, when compressor is continuously transported
Turn the time more than or equal to the first setting time, and indoor actual environment temperature is less than or equal to desired temperature is heated, it is indoor
Coil pipe initial temperature subtracts the absolute value of the difference of indoor coil actual temperature less than or equal to the first temperature threshold, and indoor actual rings
When the absolute value that border temperature subtracts the difference of indoor coil actual temperature is less than or equal to second temperature threshold value, determine that air-conditioning occurs refrigerant
Leakage failure.
When indoor actual environment temperature is less than or equal to cryogenic temperature setting value, illustrate that current indoor temperature is relatively low, it is empty
Allocation and transportation row heating mode, therefore secondary refrigerant leakage detection is carried out, it is empty when indoor actual environment temperature is more than desired temperature is heated
Tune is not turned on heating mode, and refrigerant is not revealed, even if therefore indoor coil initial temperature subtracts indoor coil actual temperature
Poor absolute value is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the exhausted of the difference of indoor coil actual temperature
Not can determine whether that air conditioner coolant occurs leakage failure when being less than or equal to second temperature threshold value to value yet, therefore the present invention is only in sky
Tune to open to open and secondary refrigerant leakage detection can be just run in the case that refrigeration is likely to occur secondary refrigerant leakage, can either ensure that secondary refrigerant leakage is examined
The validity of survey, additionally it is possible to avoid energy waste, will not often report refrigerant fault impact customer experience again.
Wherein, the value for heating desired temperature can be defined according to actually used demand, for example, work as operation of air conditioner
When in normal domestic use environment, cryogenic temperature setting value can take 16 DEG C, 17 DEG C, 18 DEG C, 20 DEG C etc., when indoor actual environment temperature
Degree is more than or equal to cryogenic temperature setting value, illustrates that current indoor environment temperature is relatively low, and operation of air conditioner is heated, secondary refrigerant leakage detection
It is occur in the case of air-conditioning heating, such as when operation of air conditioner is in the environment special to environment temperature requirement such as computer room, uses
Family can also be set according to the actual requirements, as long as be less than or equal to heating desired temperature according to indoor actual environment temperature
Can interpolate that out that current indoor environment temperature is relatively low, operation of air conditioner is in a heating mode.
In any of the above-described embodiment, also include after step s 104：Control compressor shutdown.When refrigerant is revealed
Afterwards, control compressor shutdown ensure that air-conditioning normal table and safety environment in run, while can avoid due to
Refrigerant continues flowing and causes secondary refrigerant leakage speed to accelerate, and reduces due to the pollution that secondary refrigerant leakage is brought to environment, and energy saving.
In the above-described embodiments, after the second setting time of compressor shutdown, compressor is restarted.In the present embodiment
In, secondary refrigerant leakage degree can't be too big within a certain period of time, has no effect on the normal operation of air-conditioner, if judging system at once
System failure simultaneously keeps compressor to shut down always, can influence the temperature adjusting demand of use environment, influences the use of user, therefore
Compressor shutdown restarts afterwards for a period of time, ensure that the refrigeration or heating effect of air-conditioning.Wherein the second setting time can
To be set according to the actual requirements, when refrigeration or heating needs it is higher when, the second setting time can take 5 minutes, 4 minutes or
It is shorter, will so be restarted when after the setting time of compressor shutdown second, indoor refrigeration or heating effect will not be produced
The too big influence of life, when refrigeration or heating needs are relatively low, the second setting time can take 6 minutes, 7 minutes or longer.
In the above-described embodiments, when causing compressor shutdown default secondary due to secondary refrigerant leakage in the 3rd setting time, protect
Hold compressor and be in stopped status.In the present embodiment, when in the 3rd setting time because secondary refrigerant leakage causes compressor shutdown
At default time, illustrate within a certain period of time, the number of times that secondary refrigerant leakage occurs is more, therefore the possibility of secondary refrigerant leakage is larger, protect
Hold compressor shutdown.By the present embodiment, can be multiple to secondary refrigerant leakage detection within a certain period of time, therefore testing result is more
Accurately and reliably, when testing result confirms that refrigerant is revealed, it should keep compressor shutdown, it is to avoid because refrigerant continues to flow
Cause secondary refrigerant leakage speed to accelerate, reduce due to the pollution that secondary refrigerant leakage is brought to environment, and energy saving.Wherein the 3rd setting
Time can be set according to the actual requirements, and such as the 3rd setting time can be 1 hour, 2 hours, 3 hours etc., for example when
When more strict to secondary refrigerant leakage requirement, the 3rd setting time can take 3 hours or longer, when not being special to secondary refrigerant leakage requirement
When not strict, the 3rd setting time can go 1 hour or shorter, because secondary refrigerant leakage compressor shutdown is default secondary in 1 hour
Compressor shutdown is just kept not restart.Can according to the actual requirements be set for wherein default time, be wanted when to secondary refrigerant leakage detection
When asking more strict, can be set as 3 times, 2 times or less for default time, when not being particularly severe to secondary refrigerant leakage detection requirement
When, can be set as 4 times, 5 times or more for default time, when there is more multiple secondary refrigerant leakage in the 3rd setting time, just guarantor
Compressor shutdown is held not restart.
Second embodiment of the invention provides a kind of air conditioner coolant leak detection apparatus, including coil temperature sensor 1, is used for
Obtain indoor coil initial temperature and indoor coil actual temperature；Environment temperature sensor 2, for obtaining indoor environment temperature；
Timer 3, for obtaining compressor continuous operation time；Processor 4, for during operation of air conditioner refrigeration mode, working as pressure
Contracting machine continuous operation time is more than or equal to the first setting time, and indoor coil initial temperature subtracts the difference of indoor coil actual temperature
Absolute value be less than or equal to the first temperature threshold, indoor actual environment temperature subtracts the absolute value of the difference of indoor coil actual temperature
During less than or equal to second temperature threshold value, determine that air-conditioning occurs secondary refrigerant leakage failure.
When compressor operating time is more than or equal to the first setting time, operation of air conditioner enters stable state, works as cup
Interior actual environment temperature is relatively stable, and coil temperature sensor 1 and the operation of environment temperature sensor 2 enter steady operational status,
The indoor coil actual temperature and indoor actual environment temperature for collecting are relatively reliable, when indoor coil initial temperature subtracts indoor disk
When the absolute value of the difference of pipe actual temperature is less than or equal to the first temperature threshold, indoor coil initial temperature and indoor coil are illustrated
Actual temperature is closer to, when indoor actual environment temperature subtracts the absolute value of the difference of indoor coil actual temperature less than or equal to the
During two temperature thresholds, illustrate that indoor actual environment temperature and indoor coil actual temperature are closer to, it was demonstrated that currently without due to
Indoor actual environment temperature is too high, and indoor coil heat exchange causes indoor coil actual temperature to be rapidly heated, it can be said that bright work as
Preceding indoor coil actual temperature is too high, and the heat exchange amount reduction of air-conditioning, processor 4 determines that air-conditioning occurs secondary refrigerant leakage failure.Pass through
The present invention, system stabilization after secondary refrigerant leakage is detected, and using actual coil temperature respectively at initial coil temperature with
Indoor environment temperature is compared and analyzed, therefore testing result is more accurately and reliably.Wherein cryogenic temperature setting value, first
Here is omitted as described above for the setting of temperature threshold and second temperature threshold value, the setting of the first setting time as described above,
Here is omitted.
Optionally, in said apparatus embodiment, processor 4 is additionally operable to during operation of air conditioner refrigeration mode, works as pressure
The contracting machine duration of runs is more than or equal to the first setting time, indoor actual environment temperature more than or equal to heating desired temperature,
And indoor coil actual temperature subtracts the absolute value of the difference of indoor coil initial temperature less than or equal to the first temperature threshold, indoor disk
Pipe actual temperature subtracts the absolute value of indoor actual environment temperature difference less than or equal to second temperature threshold value constantly, determines that air-conditioning occurs
Secondary refrigerant leakage failure.
When indoor actual environment temperature is more than or equal to cryogenic temperature setting value, illustrate that current indoor temperature is higher, it is empty
Allocation and transportation row refrigeration mode, therefore secondary refrigerant leakage detection is carried out, it is empty when indoor actual environment temperature is less than cryogenic temperature setting value
Tune is not turned on refrigeration mode, and refrigerant is not revealed, even if therefore indoor coil initial temperature subtracts indoor coil actual temperature
Poor absolute value is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the exhausted of the difference of indoor coil actual temperature
Not can determine whether that air conditioner coolant occurs leakage failure when being less than or equal to second temperature threshold value to value yet, therefore the present invention is only in sky
Tune to open to open and secondary refrigerant leakage detection can be just run in the case that refrigeration is likely to occur secondary refrigerant leakage, can either ensure that secondary refrigerant leakage is examined
The validity of survey, additionally it is possible to avoid energy waste, will not often report refrigerant fault impact customer experience again.Wherein cryogenic temperature sets
Definite value is as described above, here is omitted.
Optionally, in any of the above-described device embodiment, processor 4 is additionally operable in operation of air conditioner heating mode processes,
When compressor operating time is more than or equal to the first setting time, indoor actual environment temperature sets less than or equal to temperature is heated
Value, and indoor coil actual temperature subtracts the absolute value of the difference of indoor coil initial temperature less than or equal to the first temperature threshold, room
Inner coil pipe actual temperature subtracts the absolute value of the difference of indoor actual environment temperature less than or equal to the 3rd temperature threshold constantly, it is determined that empty
Readjust the distribution raw secondary refrigerant leakage failure.
When indoor actual environment temperature is less than or equal to cryogenic temperature setting value, illustrate that current indoor temperature is relatively low, it is empty
Allocation and transportation row heating mode, therefore secondary refrigerant leakage detection is carried out, it is empty when indoor actual environment temperature is more than desired temperature is heated
Tune is not turned on heating mode, and refrigerant is not revealed, even if therefore indoor coil initial temperature subtracts indoor coil actual temperature
Poor absolute value is less than or equal to the first temperature threshold, and indoor actual environment temperature subtracts the exhausted of the difference of indoor coil actual temperature
Not can determine whether that air conditioner coolant occurs leakage failure when being less than or equal to second temperature threshold value to value yet, therefore the present invention is only in sky
Tune to open to open and secondary refrigerant leakage detection can be just run in the case that refrigeration is likely to occur secondary refrigerant leakage, can either ensure that secondary refrigerant leakage is examined
The validity of survey, additionally it is possible to avoid energy waste, will not often report refrigerant fault impact customer experience again.Temperature is wherein heated to set
The setting of definite value is as described above, here is omitted.
In any of the above-described embodiment, after processor 4 is used to determine that air-conditioning occurs secondary refrigerant leakage failure, control is additionally operable to
Compressor shutdown processed.After refrigerant is revealed, the control of processor 4 compressor shutdown ensure that air-conditioning in normal table and
Run in the environment of safety, while can avoid causing secondary refrigerant leakage speed to accelerate because refrigerant continues flowing, reduced due to cold
Matchmaker is leaked to the pollution that environment brings, and energy saving.
In the above-described embodiments, after processor 4 controls the second setting time of compressor shutdown, processor 4 is additionally operable to weight
It is new to start compressor.Secondary refrigerant leakage degree can't be too big within a certain period of time, has no effect on the normal operation of air-conditioner, if
Decision-making system failure and keep compressor to shut down always at once, the temperature adjusting demand of use environment can be influenceed, influence user's
Use, therefore restarted afterwards for a period of time in compressor shutdown, ensure that the refrigeration or heating effect of air-conditioning.Wherein second
The setting of setting time is as described above, here is omitted.
In the above-described embodiments, processor 4 is additionally operable to when the 3rd setting time is interior because secondary refrigerant leakage failure causes compression
When machine shuts down default time, processor 4 is additionally operable to keep compressor to be in stopped status.When in the 3rd setting time because refrigerant is let out
When dew causes compressor shutdown default secondary, illustrate within a certain period of time, the number of times that secondary refrigerant leakage occurs is more, therefore secondary refrigerant leakage
Possibility it is larger, processor 4 be used for keep compressor shutdown, no longer restart compressor.By the present embodiment, Neng Gou
It is multiple to secondary refrigerant leakage detection in certain hour, therefore testing result is more accurately and reliably, when testing result confirms that refrigerant occurs
During leakage, it should keep compressor shutdown, it is to avoid cause secondary refrigerant leakage speed to accelerate because refrigerant continues flowing, reduce due to cold
Matchmaker is leaked to the pollution that environment brings, and energy saving.Wherein the 3rd setting time and the setting of default time are as described above, herein
Repeat no more.
It should be appreciated that the invention is not limited in the flow and structure that are described above and be shown in the drawings,
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim
System.
Claims (10)
1. a kind of air conditioner coolant leakage detection method, it is characterised in that including：
Obtain indoor coil initial temperature；
Obtain indoor actual environment temperature；
Obtain the indoor coil actual temperature；
When compressor continuous operation time is more than or equal to the first setting time, when the indoor coil initial temperature subtracts the room
The absolute value of the difference of inner coil pipe actual temperature is less than or equal to the first temperature threshold, and the indoor actual environment temperature subtracts described
When the absolute value of the difference of indoor coil actual temperature is less than or equal to second temperature threshold value, determine that the air-conditioning occurs secondary refrigerant leakage
Failure.
2. a kind of air conditioner coolant leakage detection method, it is characterised in that in the operation of air conditioner refrigeration mode, including：
When the compressor continuous operation time is more than or equal to the first setting time, and the indoor actual environment temperature is more than
Or equal to cryogenic temperature setting value, the absolute value that the indoor coil initial temperature subtracts the difference of the indoor coil actual temperature is small
In or equal to the first temperature threshold, and the indoor actual environment temperature subtracts the absolute value of the difference of the indoor coil actual temperature
During less than or equal to second temperature threshold value, determine that the air-conditioning occurs secondary refrigerant leakage failure.
3. a kind of air conditioner coolant leakage detection method, it is characterised in that in the operation of air conditioner heating mode, including：
When the compressor continuous operation time is more than or equal to the first setting time, and the indoor actual environment temperature is less than
Or equal to desired temperature is heated, the absolute value that the indoor coil initial temperature subtracts the difference of the indoor coil actual temperature is small
In or equal to the first temperature threshold, and the indoor actual environment temperature subtracts the absolute value of the difference of the indoor coil actual temperature
During less than or equal to second temperature threshold value, determine that the air-conditioning occurs secondary refrigerant leakage failure.
4. the method for claim 1, it is characterised in that the determination air-conditioning occurs after secondary refrigerant leakage failure also
Including：
Control the compressor shutdown；
After second setting time of compressor shutdown, the compressor is restarted.
5. method as claimed in claim 4, it is characterised in that also include after the compressor is restarted：Set when the 3rd
When causing the compressor shutdown default secondary due to secondary refrigerant leakage failure in fixing time, keep the compressor to be in and shut down shape
State.
6. a kind of air conditioner coolant leak detection apparatus, it is characterised in that including：
Coil temperature sensor, for obtaining indoor coil initial temperature and the indoor coil actual temperature；
Environment temperature sensor, for obtaining indoor environment temperature；
Timer, for obtaining compressor continuous operation time；
Processor, at the beginning of being more than or equal to the first setting time, the indoor coil when the compressor continuous operation time
Beginning temperature subtracts the absolute value of the difference of the indoor coil actual temperature less than or equal to the first temperature threshold, and the indoor reality
When the absolute value that environment temperature subtracts the difference of the indoor coil actual temperature is less than or equal to second temperature threshold value, the sky is determined
Readjust the distribution raw secondary refrigerant leakage failure.
7. device as claimed in claim 6, it is characterised in that the processor is additionally operable in the operation of air conditioner refrigeration mode
During, when compressor operating time is more than or equal to the first setting time, the indoor actual environment temperature is more than or equal to
Heat desired temperature, and the indoor coil actual temperature subtract the difference of the indoor coil initial temperature absolute value be less than or
Equal to the first temperature threshold, the absolute value that the indoor coil actual temperature subtracts the indoor actual environment temperature difference is less than or waits
In second temperature threshold value constantly, determine that the air-conditioning occurs secondary refrigerant leakage failure.
8. device as claimed in claim 6, it is characterised in that the processor is additionally operable in the operation of air conditioner heating mode
During, when compressor operating time is more than or equal to the first setting time, the indoor actual environment temperature is less than or equal to
Heat desired temperature, and the indoor coil actual temperature subtract the difference of the indoor coil initial temperature absolute value be less than or
Equal to the first temperature threshold, the indoor coil actual temperature subtract the difference of the indoor actual environment temperature absolute value be less than or
Equal to the 3rd temperature threshold constantly, determine that the air-conditioning occurs secondary refrigerant leakage failure.
9. device as claimed in claim 6, it is characterised in that the processor determines that the air-conditioning occurs secondary refrigerant leakage failure
Afterwards, it is additionally operable to control the compressor shutdown；After the processor controls the setting time of compressor shutdown second, also use
In the restarting compressor.
10. device as claimed in claim 9, it is characterised in that the processor be additionally operable to when in the 3rd setting time due to
When secondary refrigerant leakage failure causes the compressor shutdown default secondary, the compressor is kept to be in stopped status.
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| CN201710120898.XA CN106918117A (en) | 2017-03-02 | 2017-03-02 | Air conditioner coolant leakage detection method and device |
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| CN107560100A (en) * | 2017-08-09 | 2018-01-09 | 宁波奥克斯电气股份有限公司 | The control method of air conditioner coolant not foot protection |
| CN110986224A (en) * | 2019-11-07 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof and storage medium |
| CN111271935A (en) * | 2018-12-05 | 2020-06-12 | 青岛聚好联科技有限公司 | Information detection method and device |
| CN112178868A (en) * | 2020-09-23 | 2021-01-05 | 科华恒盛股份有限公司 | Air conditioner fault detection method and device |
| WO2022188398A1 (en) * | 2021-03-12 | 2022-09-15 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling air conditioner, and air conditioner |
| CN115111710A (en) * | 2022-06-23 | 2022-09-27 | 北京小米移动软件有限公司 | Air conditioner control method, device, medium and chip |
| EP4015945A4 (en) * | 2019-09-09 | 2022-09-28 | Daikin Industries, Ltd. | Refrigerant leakage determination system |
| CN115682305A (en) * | 2022-10-14 | 2023-02-03 | 珠海格力电器股份有限公司 | Method and device for controlling refrigeration operation of air conditioner |
| WO2024041005A1 (en) * | 2022-08-26 | 2024-02-29 | 青岛海尔空调器有限总公司 | Method and apparatus for detecting refrigerant anomaly, air conditioner, and storage medium |
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Application publication date: 20170704 |