CN106403173B - A kind of determination method and device of air-conditioner coolant leakage - Google Patents
A kind of determination method and device of air-conditioner coolant leakage Download PDFInfo
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- CN106403173B CN106403173B CN201610814720.0A CN201610814720A CN106403173B CN 106403173 B CN106403173 B CN 106403173B CN 201610814720 A CN201610814720 A CN 201610814720A CN 106403173 B CN106403173 B CN 106403173B
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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
- 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
- F24F11/30—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
- 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
- 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
- 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
-
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
Abstract
The embodiment of the present invention provides the determination method and device of a kind of air-conditioner coolant leakage, is related to air conditioner technical field, solves the problems, such as air-conditioning machine testing secondary refrigerant leakage.This method specifically includes: obtaining current outdoor environment temperature, current outdoor liquid pipe temperature, current indoor return air temperature and the antifreeze junction temperature of current indoor of air conditioner, then according to the difference between the absolute difference and the first predetermined threshold between current outdoor environment temperature and current outdoor liquid pipe temperature, and the difference between the absolute difference and the second predetermined threshold between current indoor return air temperature and the antifreeze junction temperature of current indoor, determine whether the refrigerant in air conditioner is revealed.
Description
Technical field
The present invention relates to determination methods and device that air conditioner technical field more particularly to a kind of air-conditioner coolant are revealed.
Background technique
Currently, there is the case where following three kinds common air-conditioner coolant leakages, the first is air conditioner air-conditioning in a pre-installation
There are coolant leakages for device itself；Be for second air conditioner during installation, since mobile air-conditioner etc. leads to air-conditioner system
Coolant leakage；The third is coolant leakage caused by occurring system aging etc. in air conditioner use.For air conditioner user,
Usually only there is secondary refrigerant leakage when the unobvious Shi Caihui of air conditioner cooling or heating effect discovers air conditioner, and often this when
It waits, secondary refrigerant leakage is more serious, can not judge when air conditioner secondary refrigerant leakage occurs according to present case.If air conditioner is
There is the case where secondary refrigerant leakage, and compressor is also in continuous service, press oil can be discharged in heat exchanger at this time, and due to lacking
Few refrigerant cannot return in compressor chamber in time, and compressor inter deterioration is caused to increase, and ultimately cause compressor damage.
For this problem, the prior art passes through the built in pressure sensor in air conditioner or the method for low pressure switch
Secondary refrigerant leakage is detected, this method can make air conditioner in the process of running, utilize built-in pressure sensor or low
Pressure value in pressure pressure switch detection compressor is determined as secondary refrigerant leakage or dependent failure, into one if pressure is lasting too low
Step carries out stoppage protection processing.But inventors have found that existing secondary refrigerant leakage detection method is only applicable to big several air-conditioning
Device, the air conditioner several for small, based on factors such as costs, small several air conditioner will not built in pressure sensor or low pressure pressure
Power switch, so that small several air conditioners are not available the prior art to detect air-conditioner coolant leakage, so as to cause small number sky
Device is adjusted not can avoid the compressor abrasion as caused by secondary refrigerant leakage in use.
Therefore, when not having built in pressure sensor or low pressure switch in air conditioner, the cold of air conditioner how is detected
Matchmaker's leakage becomes urgent problem.
Summary of the invention
The embodiment of the present invention provides the determination method and device of a kind of air-conditioner coolant leakage, to solve air-conditioning machine examination
The problem of surveying secondary refrigerant leakage.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of determination method of air-conditioner coolant leakage, comprising:
Obtain the current outdoor environment temperature, current outdoor liquid pipe temperature, current indoor return air temperature of the air conditioner with
And the antifreeze junction temperature of current indoor；
Made a reservation for according to the absolute difference and first between the current outdoor environment temperature and the current outdoor liquid pipe temperature
The absolute difference and between difference and the current indoor return air temperature and the antifreeze junction temperature of the current indoor between threshold value
Difference between two predetermined thresholds, determines whether the refrigerant in the air conditioner is revealed；
Wherein, first predetermined threshold is outdoor environment temperature of the air conditioner when refrigerant is not revealed and outdoor liquid
The minimum value of absolute difference between tube temperature degree, second predetermined threshold are indoor return air of the air conditioner when refrigerant is not revealed
The minimum value of absolute difference between temperature and indoor antifreeze junction temperature.
Second aspect, provides a kind of decision maker of air-conditioner coolant leakage, which includes:
Module is obtained, for obtaining the current outdoor environment temperature of the air conditioner, current outdoor liquid pipe temperature, working as cup
Interior return air temperature and the antifreeze junction temperature of current indoor；
Determination module, the current outdoor environment temperature and the current outdoor for being obtained according to the acquisition module
The current indoor of the difference and the acquisition module acquisition between absolute difference and the first predetermined threshold between liquid pipe temperature
The difference between absolute difference and the second predetermined threshold between return air temperature and the antifreeze junction temperature of the current indoor, determines the sky
Adjust whether the refrigerant in device is revealed；
Wherein, first predetermined threshold is outdoor environment temperature of the air conditioner when refrigerant is not revealed and outdoor liquid
The minimum value of absolute difference between tube temperature degree, second predetermined threshold are indoor return air of the air conditioner when refrigerant is not revealed
The minimum value of absolute difference between temperature and indoor antifreeze junction temperature.
The determination method and device of air-conditioner coolant leakage provided in an embodiment of the present invention, due in the liquid pipe of air conditioner
The missing of refrigerant when refrigerant leaks in liquid pipe, so that the absolute difference between outdoor environment temperature and outdoor liquid pipe temperature
When refrigerant of the absolute difference of value and indoor return air temperature and indoor antifreeze junction temperature in the liquid pipe of air conditioner leaks
Normal value when not leaking lower than refrigerant, therefore, the present invention pass through the current outdoor environment temperature for obtaining air conditioner, current outdoor
Liquid pipe temperature, current indoor return air temperature and the antifreeze junction temperature of current indoor, then by current outdoor environment temperature and currently
Between the outdoor environment temperature and outdoor liquid pipe temperature of absolute difference and air conditioner when refrigerant is not revealed between outdoor liquid pipe temperature
The comparison of the minimum value of absolute difference, and by the absolute difference between current indoor return air temperature and the antifreeze junction temperature of current indoor
The ratio of the minimum value of absolute difference between indoor return air temperature of the air conditioner when refrigerant is not revealed and indoor antifreeze junction temperature
Compared with, thus can determine air conditioner whether coolant leakage, avoiding air conditioner can not built in pressure sensor or low pressure
The problem of switching, can not carrying out refrigerant detection protects compressor in secondary refrigerant leakage so that air conditioner is able to detect coolant leakage
When it is not destroyed, reduce the maintenance cost of air conditioner, improve air conditioner detection coolant leakage flexibility.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of the determination method of air-conditioner coolant leakage provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the decision maker of air-conditioner coolant leakage provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The executing subject of the determination method of air-conditioner coolant leakage provided in an embodiment of the present invention can be air-conditioner coolant
The decision maker of leakage or the electronic equipment that can be used for executing the determination method that above-mentioned air-conditioner coolant is revealed.Wherein, empty
The decision maker for adjusting device secondary refrigerant leakage can be central processing unit (the Central Processing in above-mentioned electronic equipment
Unit, CPU) it can be either the control unit or module in above-mentioned electronic equipment.The judgement of air-conditioner coolant leakage
Device is generally arranged in air conditioner, for whether revealing carry out real-time monitoring to refrigerant in the air conditioner.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function or the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined quantity and execution order.
The embodiment of the present invention provides a kind of determination method of air-conditioner coolant leakage, as shown in Figure 1, this method is specifically wrapped
Include following steps:
101, obtain the current outdoor environment temperature of air conditioner, current outdoor liquid pipe temperature, current indoor return air temperature with
And the antifreeze junction temperature of current indoor.
Illustratively, above-mentioned outdoor liquid pipe temperature is obtained by the way that the outdoor liquid pipe temperature sensor of outdoor unit is arranged in
, commonly used in indicating the temperature of refrigerant in outdoor liquid pipe；Above-mentioned outdoor environment temperature is the room by the way that outdoor unit is arranged in
External environment temperature sensor obtains；The above-mentioned antifreeze junction temperature in interior is the anti-freeze temperature sensor by the way that machine indoors is arranged
It obtains, commonly used in indicating the temperature of refrigerant in indoor liquid pipe；Above-mentioned indoor return air temperature is by the way that machine indoors is arranged
Return air temperature sensor obtains, commonly used in indicating indoor environment temperature.
Illustratively, when to be in temperature different for the temperature that any one temperature sensor in above-mentioned temperature sensor is got
Often when alarm range, then the abnormality of temperature sensors is determined, the decision maker of air-conditioner coolant leakage at this time is without refrigerant
Leak detection.Such as, it is generally the case that when temperature sensor short circuit, usually less than -40 DEG C of the temperature detected, meanwhile,
When temperature sensor open circuit, the temperature detected is typically larger than 127 DEG C, therefore, in general, above-mentioned temperature anomaly alerts
Range can be set as: less than -40 DEG C or greater than 127 DEG C.
Illustratively, before step 101, if air conditioner is in operating condition, and compressor is in shutdown status, then not
Carry out secondary refrigerant leakage abnormality detection.
Moreover, when setting the temperature of the air conditioner, the temperature range and heating mode of the air conditioner in refrigeration mode
Temperature range is different.Illustratively, the temperature range of refrigeration mode can be 19 DEG C~30 DEG C, the temperature range of heating mode
It can be 16 DEG C~30 DEG C.
In addition, the refrigeration mode of air conditioner also has corresponding range of operation with heating mode, when air conditioner is in such as table 1
Shown in except temperature range when, compressor of air conditioner not will start then, will not carry out secondary refrigerant leakage detection.
Table 1
Wherein, DB indicates that dry-bulb temperature, WB indicate wet-bulb temperature.These data are also to estimate according to the actual situation, very
Hardly possible quantization.The not air conditioner of same horsepower, parameter has fine tuning, but logic is the same.
102, according to the absolute difference and the first predetermined threshold between current outdoor environment temperature and current outdoor liquid pipe temperature
Between difference and absolute difference and the second predetermined threshold between current indoor return air temperature and the antifreeze junction temperature of current indoor between
Difference, determine air conditioner in refrigerant whether reveal.
Wherein, the first predetermined threshold is air conditioner between the outdoor environment temperature when refrigerant is not revealed and outdoor liquid pipe temperature
The minimum value of absolute difference, the second predetermined threshold are indoor return air temperature of the air conditioner when refrigerant is not revealed and indoor anti-freeze
The minimum value of absolute difference between temperature.
Specifically, the step 102 may include following content:
A1, when between the absolute difference and the first predetermined threshold between current outdoor environment temperature and current outdoor liquid pipe temperature
Difference is less than 0, and between the absolute difference and the second predetermined threshold between current indoor return air temperature and the antifreeze junction temperature of current indoor
Difference less than 0 when, determine air-conditioner coolant leakage.
Alternatively,
A2, when between the absolute difference and the first predetermined threshold between current outdoor environment temperature and current outdoor liquid pipe temperature
Difference is more than or equal to 0, and absolute difference and the second predetermined threshold between current indoor return air temperature and the antifreeze junction temperature of current indoor
When difference between value is more than or equal to 0, then determine that the refrigerant in air conditioner is not revealed.
It should be noted that the air conditioner will receive ring when air conditioner is in extreme environment (for example, extremely cold, very hot)
The influence in border, so that its heat transfer effect is deteriorated, at this point, if according to secondary refrigerant leakage determination method provided by the invention come to this
Air conditioner carries out secondary refrigerant leakage judgement, then can may greatly detect its outdoor environment when the air-conditioner coolant does not leak
The difference between absolute difference and the first predetermined threshold between temperature and outdoor liquid pipe temperature less than 0, and/or, detect indoor return
The difference between absolute difference and the second predetermined threshold between air temperature and indoor antifreeze junction temperature is let out less than 0 so as to cause refrigerant
The erroneous judgement of dew.
Preferably, the embodiment of the present invention can set the first above-mentioned predetermined threshold to air conditioner do not reveal in refrigerant and
The minimum value of absolute difference between outdoor environment temperature and outdoor liquid pipe temperature when outdoor environment temperature is in extreme temperature range,
It is room of the air conditioner when refrigerant is not revealed and outdoor environment temperature is in extreme temperature range by the second above-mentioned predetermined threshold
The minimum value of absolute difference between interior return air temperature and indoor antifreeze junction temperature.
Wherein, above-mentioned extreme temperature range includes outdoor environment temperature less than the first extreme temperature, and/or, outdoor ring
Border temperature is greater than the second extreme temperature.Illustratively, the first above-mentioned extreme temperature can be the maximum value of extremely low temperature, above-mentioned
The second extreme temperature can be excessive temperature minimum value.Preferably, above-mentioned extreme temperature range can be set to outdoor
Environment temperature is less than -5 DEG C (degrees Celsius) and outdoor environment temperature is greater than+43 DEG C.
Preferably, in order to improve the accuracy that air-conditioner coolant leakage determines, the step 102 and step A1 can also include
Following content:
B1, when between the absolute difference and the first predetermined threshold between current outdoor environment temperature and current outdoor liquid pipe temperature
Between absolute difference and the second predetermined threshold of the difference less than 0 and between current indoor return air temperature and the antifreeze junction temperature of current indoor
Difference less than 0, and when continuing the first predetermined amount of time, then determine that air-conditioner coolant is revealed.
Wherein, the first above-mentioned predetermined time can be changed to by current indoor return air temperature according to the air conditioner temperature and be worked as
Set temperature determines that it is not limited in the embodiment of the present invention in cup.
Illustratively, if outdoor liquid pipe temperature indicates that outdoor environment temperature is indicated with Ta with Te, indoor antifreeze junction temperature is used
Tl indicates that indoor return air temperature indicates with Ti, then when the air conditioner is under the mode freezed or heated, and the operating of compressor
Time is in initial start stage, and the absolute difference of Te-Ta normally belongs to the section [a, b], the absolute difference of Tl-Ti normally belong to [c,
D] section, if after compressor start after T1 minutes, the difference between the absolute difference and a of Te-Ta is less than 0, and Tl-Ti's is absolute
When difference between difference and c is less than 0 and when continuing T2 minute, judgement secondary refrigerant leakage.
Optionally, due to that may have any temperature sensor damage in air conditioner, and when temperature sensor damage, benefit
The temperature value got with temperature sensor is just inaccurate, at this point, being let out using air-conditioner coolant provided in an embodiment of the present invention
It is nonsensical that the determination method of leakage carries out secondary refrigerant leakage judgement.In order to improve air-conditioner coolant leakage provided in an embodiment of the present invention
Determination method accuracy, can also include the following steps: after step 102
C1, control air conditioner are shut down, and are restarted.
C2, current outdoor environment temperature, the current outdoor liquid pipe temperature, current indoor return air temperature for reacquiring air conditioner
And the antifreeze junction temperature of current indoor.
C3, according to the absolute difference and first between the current outdoor environment temperature and current outdoor liquid pipe temperature of reacquisition
Absolute difference between the current indoor return air temperature and the antifreeze junction temperature of current indoor of difference and reacquisition between predetermined threshold
Difference between value and the second predetermined threshold determines whether the refrigerant in air conditioner is revealed again.
Specifically, in order to avoid air conditioner in secondary refrigerant leakage due to working, caused by compressor fault, it is preferred that
It, can be cold at second of progress when the decision maker of air-conditioner coolant leakage determines that secondary refrigerant leakage occurs for the air conditioner for the first time
Matchmaker needs to be implemented C1 (i.e. before executing step C2, C3) before revealing judgement, i.e., the air conditioner needs to be set as shutting down by compressor
State, and restart, so that compressor stops working, and sends stop reason code to line control machine, finally make air conditioner
It shuts down.In general, air conditioner is usually shut down 3 minutes, and the air conditioner can be restarted automatically after 3 minutes, the embodiment of the present invention pair
Above content is without limitation.
Meanwhile air conditioner carries out the air conditioner second after executing step C3 and second of above refrigerant is let out
After dew determines, if still determining, the air-conditioner coolant is leaked, which triggers alarm, and sends alarm generation to line control machine
Code, so that line control machine stops working according to the alarm code into shutdown status.Illustratively, the alarm is only when under the air conditioner
It is released when electric.
In addition, air conditioner is when executing step 102, if it is decided that coolant leakage, then can number to coolant leakage into
Row counts.When executing step C1-C3, if determining coolant leakage again, on the basis of the number of original coolant leakage
On, stored count is carried out, and trigger alarm；If it is determined that there is not coolant leakage, then alarm, the normal work of air conditioner are not triggered
Make.
Moreover, when air conditioner meets preset condition, then the number of coolant leakage is reset, and by the current wind of air conditioner
The air quantity type that type recovery is user setting is measured, i.e., air quantity type is resetted.Wherein, which can be execution
Air-conditioner coolant leakage is determined after step 102 and determines that the air conditioner is cold after within a specified time executing step C1- step C3
Matchmaker reveals, the line control machine of the indoor unit of air conditioner is shut down alternatively, the indoor electromechanical source of air conditioner is cut off.For example, when this is specified
Between can be 1 hour, it is not limited in the embodiment of the present invention.
It should be noted that will lead to the heat exchange effect of the air conditioner since if outdoor environment temperature is in extreme temperature
Fruit is bad, so that the air conditioner is not in the case where refrigerant is revealed, it is also possible to indoor return air temperature and indoor antifreeze junction temperature occurs
The case where absolute difference of degree is less than the first predetermined threshold.
Preferably, the embodiment of the present invention can reset the air quantity type of the air conditioner when executing step C1- step C3
For low wind type, at this point, then indoor return air temperature change is slow, so that indoor return since the air conditioner is run with low wind air quantity
Absolute difference of the absolute difference of air temperature and indoor antifreeze junction temperature than the air conditioner when high wind air quantity runs same time
Increase, to avoid occurring when coolant leakage does not occur for the air conditioner the absolute of indoor return air temperature and the antifreeze junction temperature in interior
The case where difference between difference and the first predetermined threshold is less than 0, and then avoid air-conditioner coolant leakage erroneous judgement.Meanwhile if this
When indoor return air temperature and the absolute difference and the first predetermined threshold of indoor antifreeze junction temperature between difference less than 0, then sentence again
Fixed air-conditioner coolant leakage further improves the accuracy that air-conditioner coolant leakage determines.
Illustratively, in practical applications, if the set temperature of air conditioner is indicated with Tset, in general, being 15 in area
1 air conditioner is installed, then no matter air conditioner work in refrigeration mode or heating mode, works as Ti- in the room of square meter
It is common in the case that the absolute difference of Tset is greater than 5 DEG C, if secondary refrigerant leakage does not occur for 1 air conditioner, when its compression
When machine is run 8 minutes, the absolute difference of Tl-Ti can be greater than 10 DEG C, and the absolute difference of Te-Ta can be greater than 4 DEG C, if Tl-Ti's is exhausted
To difference less than 5 DEG C, the absolute difference of Te-Ta is less than 2 DEG C, just most probably cold draining matchmaker, if the absolute difference of Tl-Ti is less than 5
DEG C, the absolute difference of Te-Ta continues 1 minute less than 2 DEG C, then determines that 1 air-conditioner coolant is revealed.In addition, again by
If being in extreme temperature in outdoor environment temperature, when executing step C1- step C3, the air quantity type of the air conditioner is reset to
Low wind type avoids occurring the exhausted of Tl-Ti when coolant leakage does not occur for the air conditioner so that the absolute difference of Tl-Ti increases
The case where to difference less than 5 DEG C, if the absolute difference of Tl-Ti is less than 5 DEG C at this time, the absolute difference of Te-Ta less than 2 DEG C, and
Continue 1 minute, then determines that 1 air-conditioner coolant is revealed again.
It should be noted that method and step that whether the refrigerant in air conditioner is revealed are determined in the present embodiment again
Detection process in 102 it is similar, details are not described herein.Moreover, repeating and executing after detecting air-conditioner coolant leakage
Step C1- step C3 carries out multiple coolant leakage detection to the air conditioner, and the embodiment of the present invention is to execution step C1- step C3
Number without limitation.
The determination method of air-conditioner coolant leakage provided in an embodiment of the present invention, due to the refrigerant hair in the liquid pipe of air conditioner
The missing of refrigerant when raw leakage in liquid pipe so that absolute difference between outdoor environment temperature and outdoor liquid pipe temperature and
Lower than cold when refrigerant of the absolute difference of indoor return air temperature and indoor antifreeze junction temperature in the liquid pipe of air conditioner leaks
Normal value when matchmaker does not leak, therefore, current outdoor environment temperature, the current outdoor liquid pipe temperature that the present invention passes through acquisition air conditioner
Degree, current indoor return air temperature and the antifreeze junction temperature of current indoor, then by current outdoor environment temperature and current outdoor liquid
Absolute difference between the outdoor environment temperature and outdoor liquid pipe temperature of absolute difference and air conditioner when refrigerant is not revealed between tube temperature degree
The comparison of the minimum value of value, and by between current indoor return air temperature and the antifreeze junction temperature of current indoor absolute difference and the sky
The comparison of the minimum value of absolute difference between indoor return air temperature and indoor antifreeze junction temperature of the tune device when refrigerant is not revealed, thus
Can determine air conditioner whether coolant leakage, avoid air conditioner can not built in pressure sensor or low pressure switch, no
The problem of being able to carry out refrigerant detection so that air conditioner is able to detect coolant leakage, protect compressor in secondary refrigerant leakage not by
Damage, reduces the maintenance cost of air conditioner, improves the flexibility of air conditioner detection coolant leakage.
The embodiment of the present invention provides a kind of decision maker of air-conditioner coolant leakage, as shown in Fig. 2, the device 2 includes:
Obtain module 21 and determination module 22, in which:
Module 21 is obtained, for obtaining current outdoor environment temperature, the current outdoor liquid pipe temperature, current indoor of air conditioner
Return air temperature and the antifreeze junction temperature of current indoor.
Determination module 22, current outdoor environment temperature and current outdoor liquid pipe temperature for being obtained according to module 21 is obtained
Between absolute difference and the first predetermined threshold between difference, and obtain current indoor return air temperature that module 21 obtains and current
The difference between absolute difference and the second predetermined threshold between indoor antifreeze junction temperature, determines whether the refrigerant in air conditioner is let out
Dew.
Wherein, the first above-mentioned predetermined threshold is outdoor environment temperature of the air conditioner when refrigerant is not revealed and outdoor liquid pipe
The minimum value of absolute difference between temperature, the second above-mentioned predetermined threshold are indoor return air temperature of the air conditioner when refrigerant is not revealed
The minimum value of absolute difference between indoor antifreeze junction temperature.
Optionally, as shown in Fig. 2, the device 2 further include: control module 23, in which:
Control module 23 is shut down for controlling air conditioner, and is restarted.
Obtain module 21, be also used to reacquire the current outdoor environment temperature of air conditioner, current outdoor liquid pipe temperature, when
Return air temperature and the antifreeze junction temperature of current indoor in cup.
Determination module 22 is also used to according to the current outdoor environment temperature and current outdoor liquid for obtaining the reacquisition of module 21
The current indoor return air of the difference and the acquisition reacquisition of module 21 between absolute difference and the first predetermined threshold between tube temperature degree
The difference between absolute difference and the second predetermined threshold between temperature and the antifreeze junction temperature of current indoor determines in air conditioner again
Whether refrigerant is revealed.
Optionally, determination module 22 is specifically used for: when the current outdoor environment temperature for obtaining the acquisition of module 21 and working as cup
The difference between absolute difference and the first predetermined threshold between external solution tube temperature degree obtains the current indoor that module 21 obtains less than 0
When the difference between absolute difference and the second predetermined threshold between return air temperature and the antifreeze junction temperature of current indoor is less than 0, determine empty
Adjust device secondary refrigerant leakage.
Further alternative, determination module 22 is when the current outdoor environment temperature and current outdoor for obtaining the acquisition of module 21
The difference between absolute difference and the first predetermined threshold between liquid pipe temperature obtains the current indoor that module 21 obtains and returns less than 0
When the difference between absolute difference and the second predetermined threshold between air temperature and the antifreeze junction temperature of current indoor is less than 0, air-conditioning is determined
It is specifically used for when device secondary refrigerant leakage: between obtaining the current outdoor environment temperature and current outdoor liquid pipe temperature that module 21 obtains
Difference between absolute difference and the first predetermined threshold is less than 0 and obtains current indoor return air temperature that module 21 obtains and currently
The difference between absolute difference and the second predetermined threshold between indoor antifreeze junction temperature continues the first predetermined amount of time less than 0
When, then determine that air-conditioner coolant is revealed.
Wherein, the first above-mentioned predetermined threshold is that air conditioner is not revealed in refrigerant and outdoor environment temperature is in extreme temperature
The minimum value of absolute difference between outdoor environment temperature and outdoor liquid pipe temperature when range, the second above-mentioned predetermined threshold is air-conditioning
Indoor return air temperature of the device when refrigerant is not revealed and outdoor environment temperature is in extreme temperature range and indoor antifreeze junction temperature
Between absolute difference minimum value.
The decision maker of air-conditioner coolant leakage provided in an embodiment of the present invention, due to the refrigerant hair in the liquid pipe of air conditioner
The missing of refrigerant when raw leakage in liquid pipe so that absolute difference between outdoor environment temperature and outdoor liquid pipe temperature and
Lower than cold when refrigerant of the absolute difference of indoor return air temperature and indoor antifreeze junction temperature in the liquid pipe of air conditioner leaks
Normal value when matchmaker does not leak, therefore, current outdoor environment temperature, the current outdoor liquid pipe temperature which passes through acquisition air conditioner
Degree, current indoor return air temperature and the antifreeze junction temperature of current indoor, then by current outdoor environment temperature and current outdoor liquid
Absolute difference between the outdoor environment temperature and outdoor liquid pipe temperature of absolute difference and air conditioner when refrigerant is not revealed between tube temperature degree
The comparison of the minimum value of value, and by between current indoor return air temperature and the antifreeze junction temperature of current indoor absolute difference and the sky
The comparison of the minimum value of absolute difference between indoor return air temperature and indoor antifreeze junction temperature of the tune device when refrigerant is not revealed, thus
Can determine air conditioner whether coolant leakage, avoid air conditioner can not built in pressure sensor or low pressure switch, no
The problem of being able to carry out refrigerant detection so that air conditioner is able to detect coolant leakage, protect compressor in secondary refrigerant leakage not by
Damage, reduces the maintenance cost of air conditioner, improves the flexibility of air conditioner detection coolant leakage.
It should be noted that during specific implementation, each step in above-mentioned method flow as shown in Figure 1 can be with
It is realized by the computer executed instructions that the processor of example, in hardware executes the software form stored in memory, to avoid weight
Multiple, details are not described herein again.And program corresponding to movement performed by above-mentioned apparatus can be stored in the dress in a software form
In the memory set, the corresponding operation of the above modules is executed in order to which processor calls.
Memory above may include volatile memory (volatile memory), such as random access memory
Device (random-access memory, RAM)；It also may include nonvolatile memory (non-volatile memory), example
Such as read-only memory (read-only memory, ROM), flash memory (flash memory), hard disk (hard disk
Drive, HDD) or solid state hard disk (solid-state drive, SSD)；It can also include the combination of the memory of mentioned kind.
Processor in device presented above can be a processor, be also possible to the system of multiple processing elements
Claim.For example, processor can be central processing unit (central processing unit, CPU；It may be other general places
Manage device, digital signal processor (digital signal processing, DSP), specific integrated circuit (application
Specific integrated circuit, ASIC), field programmable gate array (field-programmable gate
Array, FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..It is logical
It can be microprocessor with processor or the processor be also possible to any conventional processor etc.；It can also be dedicated processes
Device, the application specific processor may include at least one of baseband processing chip, radio frequency processing chip etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of module, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the module, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple module or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of device or unit
Letter connection can be electrical property, mechanical or other forms.
The module as illustrated by the separation member may or may not be physically separated, aobvious as module
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of determination method of air-conditioner coolant leakage characterized by comprising
It obtains the current outdoor environment temperature of the air conditioner, current outdoor liquid pipe temperature, current indoor return air temperature and works as
Antifreeze junction temperature in cup；
According to the absolute difference and the first predetermined threshold between the current outdoor environment temperature and the current outdoor liquid pipe temperature
Between difference and absolute difference between the current indoor return air temperature and the antifreeze junction temperature of the current indoor and second pre-
Determine the difference between threshold value, determines whether the refrigerant in the air conditioner is revealed；
When determining the air conditioner and leaking, the method also includes:
It controls the air conditioner to shut down, and restarts, the air quantity type of the air conditioner is reset into low wind type；
Reacquire the current outdoor environment temperature, current outdoor liquid pipe temperature, current indoor return air temperature of the air conditioner with
And the antifreeze junction temperature of current indoor；
In advance according to the absolute difference and described first between the current outdoor environment temperature of reacquisition and current outdoor liquid pipe temperature
Determine the absolute difference between the current indoor return air temperature of the difference and reacquisition between threshold value and the antifreeze junction temperature of current indoor
Difference between second predetermined threshold, determines whether the refrigerant in the air conditioner is revealed again；
Wherein, first predetermined threshold is outdoor environment temperature of the air conditioner when refrigerant is not revealed and outdoor liquid pipe temperature
The minimum value of absolute difference between degree, second predetermined threshold are indoor return air temperature of the air conditioner when refrigerant is not revealed
The minimum value of absolute difference between indoor antifreeze junction temperature.
2. the method according to claim 1, wherein according to the current outdoor environment temperature and described working as cup
Difference between absolute difference and the first predetermined threshold and the current indoor return air temperature between external solution tube temperature degree and described work as
The difference between absolute difference and the second predetermined threshold in cup between antifreeze junction temperature determines whether is refrigerant in the air conditioner
Leakage occurs to specifically include:
When the absolute difference and the described first predetermined threshold between the current outdoor environment temperature and the current outdoor liquid pipe temperature
Difference between value less than 0, and the absolute difference between the current indoor return air temperature and the antifreeze junction temperature of the current indoor with
When difference between second predetermined threshold is less than 0, the air-conditioner coolant leakage is determined.
3. according to the method described in claim 2, it is characterized in that, described when the current outdoor environment temperature and described current
The difference between absolute difference and first predetermined threshold between outdoor liquid pipe temperature is less than 0, and the current indoor return air temperature
When spending the difference between absolute difference and the second predetermined threshold between the antifreeze junction temperature of the current indoor less than 0, described in judgement
Air-conditioner coolant leakage specifically includes:
When the absolute difference and the described first predetermined threshold between the current outdoor environment temperature and the current outdoor liquid pipe temperature
Absolute difference of the difference less than 0 and between the current indoor return air temperature and the antifreeze junction temperature of the current indoor between value with
Difference between second predetermined threshold then determines the air-conditioner coolant leakage less than 0, and when continuing the first predetermined amount of time.
4. method according to claim 1-3, which is characterized in that first predetermined threshold is the air conditioner
Outdoor environment temperature and outdoor liquid pipe temperature when refrigerant is not revealed and the outdoor environment temperature is in extreme temperature range
Between absolute difference minimum value, second predetermined threshold is that the air conditioner is not revealed and the outdoor environment temperature in refrigerant
The minimum value of absolute difference between indoor return air temperature and indoor antifreeze junction temperature when in extreme temperature range.
5. a kind of decision maker of air-conditioner coolant leakage, which is characterized in that the device includes:
Module is obtained, the current outdoor environment temperature, current outdoor liquid pipe temperature, current indoor for obtaining the air conditioner are returned
Air temperature and the antifreeze junction temperature of current indoor；
Determination module, the current outdoor environment temperature and the current outdoor liquid pipe for being obtained according to the acquisition module
The current indoor return air of the difference and the acquisition module acquisition between absolute difference and the first predetermined threshold between temperature
The difference between absolute difference and the second predetermined threshold between temperature and the antifreeze junction temperature of the current indoor, determines the air conditioner
In refrigerant whether reveal；
Control module is shut down for controlling the air conditioner, and is restarted, and the air quantity type of the air conditioner is reset to low
Wind type；
The acquisition module, be also used to reacquire the current outdoor environment temperature of the air conditioner, current outdoor liquid pipe temperature,
Current indoor return air temperature and the antifreeze junction temperature of current indoor；
The determination module, the current outdoor environment temperature for being also used to be reacquired according to the acquisition module and current outdoor liquid
Difference between absolute difference and first predetermined threshold between tube temperature degree and it is described obtain that module reacquires work as cup
The difference between absolute difference and second predetermined threshold between interior return air temperature and the antifreeze junction temperature of current indoor, determines again
Whether the refrigerant in the air conditioner is revealed；
Wherein, first predetermined threshold is outdoor environment temperature of the air conditioner when refrigerant is not revealed and outdoor liquid pipe temperature
The minimum value of absolute difference between degree, second predetermined threshold are indoor return air temperature of the air conditioner when refrigerant is not revealed
The minimum value of absolute difference between indoor antifreeze junction temperature.
6. device according to claim 5, which is characterized in that the determination module is specifically used for:
Absolute difference between the current outdoor environment temperature and the current outdoor liquid pipe temperature that the acquisition module obtains
Difference between being worth first predetermined threshold less than 0, and it is described obtain the current indoor return air temperature that module obtains and
When the difference between absolute difference and the second predetermined threshold between the antifreeze junction temperature of current indoor is less than 0, the air-conditioning is determined
Device secondary refrigerant leakage.
7. device according to claim 6, which is characterized in that the determination module is in the institute obtained when the acquisition module
State the difference between the absolute difference and first predetermined threshold between current outdoor environment temperature and the current outdoor liquid pipe temperature
It is worth less than 0, and between the current indoor return air temperature and the antifreeze junction temperature of the current indoor for obtaining module acquisition
When difference between absolute difference and the second predetermined threshold is less than 0, determine to be specifically used for when air-conditioner coolant leakage:
Absolute difference between the current outdoor environment temperature and the current outdoor liquid pipe temperature that the acquisition module obtains
Difference between being worth first predetermined threshold less than 0 and it is described obtain the current indoor return air temperature that module obtains and
The difference between absolute difference and the second predetermined threshold between the antifreeze junction temperature of current indoor is less than 0, and it is pre- to continue first
When fixing time section, then the air-conditioner coolant leakage is determined.
8. according to the described in any item devices of claim 5-7, which is characterized in that first predetermined threshold is the air conditioner
Outdoor environment temperature and outdoor liquid pipe temperature when refrigerant is not revealed and the outdoor environment temperature is in extreme temperature range
Between absolute difference minimum value, second predetermined threshold is that the air conditioner is not revealed and the outdoor environment temperature in refrigerant
The minimum value of absolute difference between indoor return air temperature and indoor antifreeze junction temperature when in extreme temperature range.
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| CN106895561B (en) * | 2017-02-28 | 2019-07-30 | 广东美的制冷设备有限公司 | It is a kind of detection air-conditioner coolant leakage method, air conditioner control device and air conditioner |
| CN107525208A (en) * | 2017-07-10 | 2017-12-29 | 珠海格力电器股份有限公司 | Lack of fluorine of air-conditioners detection method and device |
| WO2019038797A1 (en) * | 2017-08-21 | 2019-02-28 | 三菱電機株式会社 | Air conditioning device and expansion valve unit |
| CN108444046A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method for air conditioner |
| CN108583208B (en) * | 2018-05-16 | 2023-08-25 | 珠海格力电器股份有限公司 | Air conditioner air duct state determining method, device and system |
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| CN104949278A (en) * | 2015-06-25 | 2015-09-30 | 海信（山东）空调有限公司 | Method and device for detecting refrigerant leakage of air conditioner and air-conditioning device |
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| JPH08226732A (en) * | 1995-02-20 | 1996-09-03 | Matsushita Electric Ind Co Ltd | Air conditioning equipment |
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| CN1755341A (en) * | 2004-09-29 | 2006-04-05 | 乐金电子(天津)电器有限公司 | Cold media leakage detection apparatus for air conditioner and detection method thereof |
| CN1888644A (en) * | 2005-06-27 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Air conditioner refrigerant leakaging sensing method |
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