CN109307349A - A kind of leakage detection method and device of refrigerant - Google Patents
A kind of leakage detection method and device of refrigerant Download PDFInfo
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- CN109307349A CN109307349A CN201811001613.1A CN201811001613A CN109307349A CN 109307349 A CN109307349 A CN 109307349A CN 201811001613 A CN201811001613 A CN 201811001613A CN 109307349 A CN109307349 A CN 109307349A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
-
- 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
-
- 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
-
- 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 invention discloses a kind of leakage detection method of refrigerant and devices, are related to fixed speed air conditioner field, for judging the leakage situation of refrigerant in constant speed air-conditioning to avoid security risk in time.This method comprises: obtaining constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out；Determine that the current leakiness of refrigerant, the current leakiness of refrigerant include that refrigerant currently leaks completely, refrigerant is currently at slow leak condition, refrigerant is currently at fast leak state according to indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out；The prompt information of terminal is converted by the current leakiness of determining refrigerant and controls whether the constant speed air-conditioning continues to run according to the difference of the current leakiness of refrigerant.The embodiment of the present invention is applied to constant speed detection of air-conditioning.
Description
Technical field
The present invention relates to fixed speed air conditioner technical field more particularly to the leakage detection methods and device of a kind of refrigerant.
Background technique
Constant speed air-conditioning on current market all uses R32 refrigerant, and R32 refrigerant is combustible refrigerant, corresponding compressor
Lubricating oil is flammable lubricating oil, once refrigerant leakage occurs, there are two big hidden danger: one is R32 refrigerant side or room indoors
Aggregation in outer box body, concentration rise, stop operation of air conditioner not in time, if encountering electric spark, be also easy to produce hidden peril of explosion；Two be system
Cryogen leakage then illustrates that air conditioning pipe system has leak source or operation of air conditioner to split in the process since pressure or vibration cause pipeline.
After refrigerant has leaked, compressor remains in operation, and generates negative pressure, enters air (or oxygen) in air-conditioning system, compressor winding
It is steeply risen because no refrigerant is cooling, vaporizes lubricating oil at high temperature, encountering electric spark at this time also has the hidden of initiation explosion
Suffer from.
Consider from a safety viewpoint, air conditioner must do leak protection, and the first step of leak protection is how accurately
Detect whether refrigerant leaks, since indoor unit belongs to opened loop control to outdoor unit, and outdoor temperature is raised and lowered
Also it will affect judging result, therefore the probability that detection method in the prior art is failed to judge or judged by accident is very big.
Summary of the invention
The embodiment of the present invention provides the leakage detection method and device of a kind of refrigerant, right in the prior art for solving
What whether refrigerant leaked judges not accurate enough technical problem.
To achieve the purpose that solve above-mentioned technical problem, the embodiment of the present invention is adopted the following technical scheme that
In a first aspect, the embodiment provides a kind of leakage detection methods of refrigerant, this method comprises:
The constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out is obtained, it should
Indoor heat transfer temperature difference value △ T_in (t) is equal to the detected value Ta of inner ring temperature sensor and the detected value Tn of inner disc temperature sensor
Between difference, outdoor heat exchange temperature difference △ T_out be equal to external disk temperature sensor detected value Tb and indoor unit to outdoor
Difference between the detected value Tm for the first external disk temperature sensor that machine detects after powering on；
Determine that refrigerant is worked as according to the interior heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out
Preceding leakiness, the current leakiness of the refrigerant include that currently leakage, refrigerant are currently at slowly refrigerant completely
Leak condition, refrigerant are currently at fast leak state；
By the current leakiness of the determining refrigerant be converted into the prompt information of terminal and according to the refrigerant it is current
The difference of leakiness control whether the constant speed air-conditioning continues to run.
Second aspect, the embodiment provides a kind of leak detecting device of refrigerant, which includes:
Module is obtained, for obtaining the constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature
Difference △ T_out, which is equal to the detected value Ta of inner ring temperature sensor and inner disc temperature passes
Difference between the detected value Tn of sensor, outdoor heat exchange temperature difference △ T_out are equal to the detected value Tb of external disk temperature sensor
Difference between the detected value Tm of the first external disk temperature sensor detected after being powered on indoor unit to outdoor unit；
Judgment module, for according to the interior heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out
Determine that the current leakiness of refrigerant, the current leakiness of the refrigerant include refrigerant currently leakage, refrigerant completely
It is currently at slow leak condition, refrigerant is currently at fast leak state；
Execution module, for converting the current leakiness of the refrigerant determined to the prompt information and basis of terminal
The difference of the current leakiness of the refrigerant, controls whether the constant speed air-conditioning continues to run.
The third aspect, provides a kind of computer readable storage medium for storing one or more programs, it is one or
Multiple programs include instruction, and described instruction makes the refrigeration of the computer execution as described in relation to the first aspect when executed by a computer
The leakage detection method of agent.
Fourth aspect provides a kind of computer program product comprising instruction, when described instruction is run on computers
When, so that computer executes the leakage detection method of refrigerant as described in relation to the first aspect.
5th aspect, provides a kind of leak detecting device of refrigerant, comprising: processor and memory, memory are used for
Program is stored, processor calls the program of memory storage, to execute the leak detection of refrigerant described in above-mentioned first aspect
Method.
The leakage detection method and device for a kind of refrigerant that the embodiment of the present invention provides, by being let out to refrigerant difference
The analysis of leakage state, using indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out as parameter, with system
△ T_in (t) and the more available refrigerant of △ T_out under cryogen normal condition current leakage situation, according to refrigeration
A possibility that different leakage situation of agent formulates corresponding judgment basis, avoids misjudgement and fails to judge.
Detailed description of the invention
Fig. 1 is a kind of leakage detection method flow diagram for air-conditioning refrigerant that the embodiment of the present invention provides；
Fig. 2 is heat transfer temperature difference value and compressor top in room when the refrigerant that provides of the embodiment of the present invention does not leak
The tendency schematic diagram that temperature changes over time；
Fig. 3 is heat transfer temperature difference value and compressor top temperature in room when the refrigerant that provides of the embodiment of the present invention leak completely
Spend the tendency schematic diagram changed over time；
Fig. 4 is heat transfer temperature difference value and compression in room when the refrigerant that the embodiment of the present invention provides is in slow leak condition
The tendency schematic diagram that machine head temperature changes over time；
Fig. 5 is heat transfer temperature difference value and compression in room when the refrigerant that the embodiment of the present invention provides is in fast leak state
The tendency schematic diagram that machine head temperature changes over time；
What outdoor heat exchange temperature difference changed over time under the refrigerant different conditions that Fig. 6 provides for the embodiment of the present invention walks
Gesture schematic diagram；
When Fig. 7 is that the air-conditioning refrigerant that the embodiment of the present invention provides is in slow leak condition and complete leak condition
Leakage detection method flow diagram；
Fig. 8 is the leakage detection method stream when air-conditioning refrigerant that the embodiment of the present invention provides is in fast leak state
Journey schematic diagram；
Fig. 9 is when the air-conditioning refrigerant that provides of the embodiment of the present invention is in leakage completely and partial compromise critical state
Leakage detection method flow diagram；
Figure 10 is a kind of leak detecting device schematic diagram for air-conditioning refrigerant that the embodiment of the present invention provides.
Specific embodiment
With reference to the accompanying drawing, the embodiment of the present invention is described.
Referring to fig. 1, the embodiment of the invention provides a kind of leakage detection method of refrigerant, this method includes step
Rapid S100-S300:
S100, constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_ are obtained
Out, indoor heat transfer temperature difference value △ T_in (t) are equal to the detection of the detected value Ta and inner disc temperature sensor of inner ring temperature sensor
Difference between value Tn, the detected value Tb and indoor unit that outdoor heat exchange temperature difference △ T_out is equal to external disk temperature sensor are to room
Difference between the detected value Tm for the first external disk temperature sensor that outer machine detects after powering on.
Constant speed air-conditioning includes indoor unit and outdoor unit, and the inner ring temperature sensor positioned at indoor unit air inlet is for detecting
Room temperature, the inner disc temperature sensor in the middle part of indoor set heat exchanger is for detecting indoor unit tube temperature.If the inner ring temperature
The detected value of sensor is Ta, and the detected value of the inner disc temperature sensor is Tn.When the constant speed air-conditioning is in refrigeration mode, room
Interior heat transfer temperature difference value △ T_in (t)=Ta-Tn, when the constant speed air-conditioning is in heating mode, indoor heat transfer temperature difference value △ T_in
(t)=Tn-Ta.The external disk temperature sensor in machine heat exchanger is located outside for the detection that defrosts, if the external disk temperature sensor
Detected value be Tb, the detected value of the first external disk temperature sensor detected after the indoor unit is powered on to the outdoor unit is set as
Tm.When the constant speed air-conditioning is in refrigeration mode, outdoor heat exchange temperature difference △ T_out=Tb-Tm, when the constant speed air-conditioning is in system
When heat pattern, outdoor heat exchange temperature difference △ T_out=Tm-Tb.Obtain constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in
(t) and outdoor heat exchange temperature difference △ T_out.
S200, determine that refrigerant is worked as according to indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out
Preceding leakiness, the current leakiness of refrigerant include that currently leakage, refrigerant are currently at and slowly let out refrigerant completely
Leakage state, refrigerant are currently at fast leak state.
With reference to Fig. 2, curve a indicates that heat transfer temperature difference value △ T_in (t) is changed over time in room when refrigerant does not leak
Tendency, curve b indicates refrigerant when not leaking, when constant speed air-conditioning inner compressor works normally compressor top temperature with
The tendency of time change.
With reference to Fig. 3, after refrigerant leaks, compressor protector will start overheating protection, therefore compressor protection
Device tripping, compressor top temperature reduce, and drop to the threshold value of overheating protection hereinafter, compressor then wakes up, temperature rises again
It is high.If the refrigerant in constant speed air-conditioning leaks completely, curve a indicate current state under interior heat transfer temperature difference value △ T_in (t) with
The tendency of time change, compressor top temperature changes over time when curve b expression constant speed air-conditioning inner compressor works normally
Tendency.By curve in figure it is found that no matter compressor protector whether tripping, indoor heat transfer temperature difference value △ T_in (t) can all grow
Time is in very low state.
With reference to Fig. 4, curve a indicates the tendency that interior heat transfer temperature difference value △ T_in (t) is changed over time under current state, bent
Line b indicates the tendency that compressor top temperature changes over time when constant speed air-conditioning inner compressor works normally, and curve c indicates constant speed
When having sufficient refrigerant in air-conditioning, tendency that indoor heat transfer temperature difference value △ T_in (t) changes over time.It can by curve in figure
Know, if the refrigerant in constant speed air-conditioning is currently at slow leak condition, interior heat transfer temperature difference value △ T_in (t) is in the short time
It is interior that apparent variation will not occur, but when compressor works normally, the peak value of curve a is lower than the peak value of curve c.
With reference to Fig. 5, curve a indicates the tendency that interior heat transfer temperature difference value △ T_in (t) is changed over time under current state, bent
Line b indicates the tendency that compressor top temperature changes over time when constant speed air-conditioning inner compressor works normally.If in constant speed air-conditioning
Refrigerant be currently at fast leak state, with the leakage of refrigerant, when compressor works normally, indoor heat transfer temperature difference
The peak value of value △ T_in (t) can gradually decrease.
With reference to Fig. 6, curve d1 indicates constant speed air-conditioning inner refrigerant when leaking completely, outdoor heat exchange temperature difference △ T_out with
The tendency of time change.When curve d2 indicates the leakage of constant speed air-conditioning inner refrigerant partial compromise, outdoor heat exchange temperature difference △ T_out
The tendency changed over time.When curve d3 indicates that constant speed air-conditioning inner refrigerant does not leak, outdoor heat exchange temperature difference △ T_out
The tendency changed over time.
The constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference are obtained by step S100
Value △ T_out.Indoor heat transfer temperature difference value △ T_in (t) and outdoor when referring to above-mentioned constant speed air-conditioning inner refrigerant different conditions
The tendency schematic diagram of heat transfer temperature difference value △ T_out.
When constant speed air-conditioning is in refrigeration mode:
Referring to Fig. 7, step S200 includes step S211-S214b:
S211, interior heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_ under the present situation is recorded first
out。
S212a, by indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out respectively with the first threshold
Value and second threshold are made comparisons, and judge whether △ T_in (t)≤first threshold and △ T_out≤second threshold.If so then execute
Step S213a, thens follow the steps S212b if not.
S213a, control outdoor unit are out of service, and count is incremented for counter, and guard time restarts the outdoor unit later, continue
Execute step S214a.
S212b, judge whether first threshold < △ T_in (t) < third threshold value and second threshold≤△ T_out≤the 4th
Threshold value, if so, thening follow the steps S213b.
Count is incremented for S213b, counter, continues to execute step S214b.
S214a, when judging whether the count value of counter reaches the first threshold value i1, if then determining that refrigerant is currently complete
Full leakage.
S214b, when judging whether the count value of counter reaches the second threshold value i2, if then determining that refrigerant is currently located
In slow leak condition.
Referring to Fig. 8, step S200 further includes step S221-S227:
S221, interior heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_ under the present situation is recorded first
out。
S222, judge whether first threshold≤△ T_in (t)≤third threshold value, if so, note △ T_in (t) is △ T_in
(j), j is the new counting serial number met under the conditions of " first threshold < △ T_in (t) < third threshold value ", continues to execute step
S223a or S223b or S223c.
S223a, judge whether △ T_in (j)-△ T_in (j+1) >=the 5th threshold value.
S223b, judge whether △ T_in (j)-△ T_in (j+1) >=the 6th threshold value.
S223c, judge whether △ T_in (j)-△ T_in (j+1) >=the 7th threshold value.
S224, if so, counter count is incremented, continue to execute step S225a or S225b or S225c.
S225a, correspond to step S223a, judge whether that the counting of counter reaches third threshold value i3, if so, holding
Row step S226.
S225b, correspond to step S223b, judge whether that the counting of counter reaches the 4th threshold value i4, if so, holding
Row step S226.
S225c, correspond to step S223c, judge whether that the counting of counter reaches the 5th threshold value i5, if so, holding
Row step S226.
S226, control outdoor unit are out of service, and guard time restarts the outdoor unit later.
S227, record indoor heat transfer temperature difference value △ T_in (t) at this time and outdoor heat exchange temperature difference △ T_out, judgement
Whether △ T_in (t)≤first threshold and △ T_out≤second threshold, if then determine refrigerant be currently at fast leak shape
State.
Wherein the value range of the first threshold is [0,5], the value range of the second threshold is [0,5], the third threshold
The value range of value is [8,15], the value range of the 4th threshold value is [6,10], the value range of the 5th threshold value be [1,
2], the value range of the 6th threshold value is [3,4], the value range of the 7th threshold value is [5,6], the first threshold value i1 takes
Being worth range is [2,4], and the value range of second threshold value i2 is [2,4], the third threshold value i3 value range be [3,5],
4th threshold value i4 value range is [3,4], the 5th threshold value i5 value range is [1,2].The ginseng of above-mentioned value range
Numerical value is experiment the data obtained.
Further, with reference to Fig. 9, the above deterministic process is also possible to omit refrigerant in leakage and partial compromise completely
The case where when critical state, therefore step S200 further includes step S231-S234:
S231, interior heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_ under the present situation is recorded first
out。
S232, judge whether (first threshold-△ a) < △ T_in (t) < (first threshold+△ a), △ a value range is
[1,3]。
S233, if so, counter count is incremented.
S234, judge whether that the counting of counter reaches the 6th threshold value i6, the 6th threshold value i6 value range is
[30,60].If so, determining that refrigerant is currently at leakage and partial compromise critical state completely.
It can similarly obtain, when constant speed air-conditioning is in heating mode:
If the threshold value of △ T_in (t)≤the 8th and the threshold value of △ T_out≤the 9th, it is out of service to control outdoor unit, when protection
Between later restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigeration
Agent currently leaks completely.
If the tenth threshold value of the 8th threshold value < △ T_in (t) < and the 6th threshold value < △ threshold value of T_out≤the 11st, count
Count is incremented for device, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition.
Judge whether the tenth threshold value of the 8th threshold value < △ T_in (t) <, if so, continuing to determine whether △ T_in (j)-△
T_in (j+1) >=the 12nd threshold value, if so, count is incremented for counter, when the counting of counter reaches third threshold value i3 or
Judge whether △ T_in (j)-△ T_in (j+1) >=the 13rd threshold value, if so, count is incremented for counter, when the counting of counter
When reaching the 4th threshold value i4 or judge whether △ T_in (j)-△ T_in (j+1) >=the 14th threshold value, if so, counter counts
Number plus 1, when the counting of counter reaches the 5th threshold value i5, then it is out of service to control the outdoor unit, guard time weight later
The outdoor unit is opened, if the threshold value of △ T_in (t)≤the 8th and the threshold value of △ T_out≤the 9th, it is determined that refrigerant be currently at fastly
Fast leak condition.
Wherein the value range of the 8th threshold value is [0,10], the value range of the 9th threshold value is [3,4], the tenth threshold
The value range of value is [15,20], the value range of the 11st threshold value is [5,6], the value range of the 12nd threshold value is
[1,3], the value range of the 13rd threshold value is [4,6], the value range of the 14th threshold value is [7,8], first thresholding
The value range of value i1 is [2,4], and the value range of second threshold value i2 is [2,4], the third threshold value i3 value range
For [3,5], the 4th threshold value i4 value range be [3,4], the 5th threshold value i5 value range is [1,2].Above-mentioned value
The parameter value of range is experiment the data obtained.
S300, the prompt information of terminal is converted by the current leakiness of determining refrigerant and is worked as according to the refrigerant
Whether the different control constant speed air-conditionings of preceding leakiness continue to run.
The current leakiness of refrigerant has been determined by step S200, when determining that refrigerant currently leaks completely, control
Make the constant speed air-conditioning is out of service, while controlling terminal shows the prompt information that refrigerant leaks completely.When determining that refrigerant works as
It is preceding when being in slow leak condition, control the constant speed air-conditioning maintenance operating status, while controlling terminal is shown at refrigerant
In the prompt information of slow leak condition.When determining that refrigerant is currently at fast leak state, controls the constant speed air-conditioning and stop
It only runs, while controlling terminal shows that refrigerant is in the prompt information of fast leak state.
The leakage detection method of a kind of refrigerant provided in this embodiment, by dividing refrigerant difference leak condition
Analysis, using indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out as parameter, with the normal shape of refrigerant
△ T_in (t) and the more available refrigerant of △ T_out under state current leakage situation is let out according to refrigerant is different
A possibility that leakage situation formulates corresponding judgment basis, avoids misjudgement and fails to judge.
Refering to what is shown in Fig. 10, can be applied to the embodiment provides a kind of leak detecting device of refrigerant
The leakage detection method of refrigerant as shown above.The leak detecting device of the refrigerant includes:
Module 100 is obtained, for obtaining constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature
Difference △ T_out, which is equal to the detected value Ta of inner ring temperature sensor and inner disc temperature passes
Difference between the detected value Tn of sensor, outdoor heat exchange temperature difference △ T_out are equal to the detected value Tb of external disk temperature sensor
Difference between the detected value Tm of the first external disk temperature sensor detected after being powered on indoor unit to outdoor unit.
Judgment module 200, for according to indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out
Determine that the current leakiness of refrigerant, the current leakiness of refrigerant include that refrigerant currently work as completely by leakage, refrigerant
It is preceding to be currently at fast leak state in slow leak condition, refrigerant.
Further, when constant speed air-conditioning is in refrigeration mode, which is used for:
If △ T_in (t)≤first threshold and △ T_out≤second threshold, it is out of service to control outdoor unit, when protection
Between later restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigeration
Agent currently leaks completely.
If first threshold < △ T_in (t) < third threshold value and second threshold≤threshold value of △ T_out≤the 4th, counter
Count is incremented, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition.
If first threshold < △ T_in (t) < third threshold value, remember that △ T_in (t) is △ T_in (j), j is to meet " first
New counting serial number under the conditions of threshold value < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the 5th
Threshold value, then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+1)
>=the six threshold value, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△ T_in
(j+1) >=the 7th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then controls the room
Outer machine is out of service, and guard time restarts the outdoor unit later, if △ T_in (t)≤first threshold and △ T_out≤the second
Threshold value, it is determined that refrigerant is currently at fast leak state.When constant speed air-conditioning is in heating mode, the judgment module 200
For:
If the threshold value of △ T_in (t)≤the 8th and the threshold value of △ T_out≤the 9th, it is out of service to control outdoor unit, when protection
Between later restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigeration
Agent currently leaks completely.
If the tenth threshold value of the 8th threshold value < △ T_in (t) < and the 6th threshold value < △ threshold value of T_out≤the 11st, count
Count is incremented for device, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition.
If the tenth threshold value of the 8th threshold value < △ T_in (t) <, remember that △ T_in (t) is △ T_in (j), j is to meet " first
New counting serial number under the conditions of threshold value < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the tenth
Two threshold values, then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+
1) >=the 13rd threshold value, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△
T_in (j+1) >=the 14th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then controls
The outdoor unit is out of service, and guard time restarts the outdoor unit later, if the threshold value of △ T_in (t)≤the 8th and △ T_out
≤ the nine threshold value, it is determined that refrigerant is currently at fast leak state.
Execution module 300, for converting the current leakiness of the refrigerant determined to the prompt information and root of terminal
Control whether the constant speed air-conditioning continues to run according to the difference of the current leakiness of the refrigerant.
The execution module 300 is used for:
When determining that refrigerant currently leaks completely, it is out of service to control the constant speed air-conditioning, while controlling terminal display is made
The prompt information that cryogen leaks completely.
When determining that refrigerant is currently at slow leak condition, the constant speed air-conditioning maintenance operating status is controlled, together
When controlling terminal show that refrigerant is in the prompt information of slow leak condition.
When determining that refrigerant is currently at fast leak state, it is out of service to control the constant speed air-conditioning, while controlling end
End display refrigerant is in the prompt information of fast leak state.
The embodiment of the present invention provides a kind of computer readable storage medium for storing one or more programs, one
Or multiple programs include instruction, described instruction executes computer as described in Fig. 1 and Fig. 7-Fig. 9
Refrigerant leakage detection method.
The embodiment of the present invention provides a kind of computer program product comprising instruction, when instruction is run on computers
When, so that computer executes the leakage detection method of the refrigerant as described in Fig. 1 and Fig. 7-Fig. 9.
The embodiment of the present invention provides a kind of leak detecting device of refrigerant, comprising: processor and memory, memory
For storing program, processor calls the program of memory storage, to execute the refrigerant as described in Fig. 1 and Fig. 7-Fig. 9
Leakage detection method.
By the leak detecting device, computer readable storage medium, computer of refrigerant in an embodiment of the present invention
Program product can be applied to the above method, therefore, can be obtained technical effect see also above method embodiment, originally
Details are not described herein for inventive embodiments.
It should be noted that above-mentioned each unit can be the processor individually set up, also can integrate controller certain
It is realized in one processor, in addition it is also possible to be stored in the form of program code in the memory of controller, by controller
Some processor calls and executes the function of the above each unit.Processor described here can be a central processing unit
(Central Processing Unit, CPU) or specific integrated circuit (Application Specific
Integrated Circuit, ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method, it can be with
It realizes by another way.For example, apparatus embodiments described above are merely indicative, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of equipment or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
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 each unit physically exists alone, can also be integrated in one unit with two or more units.
Claims (11)
1. a kind of leakage detection method of refrigerant, which is characterized in that be used for constant speed air-conditioning, comprising:
The constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and outdoor heat exchange temperature difference △ T_out are obtained, it is described
Indoor heat transfer temperature difference value △ T_in (t) is equal to the detected value Ta of inner ring temperature sensor and the detected value Tn of inner disc temperature sensor
Between difference, the outdoor heat exchange temperature difference △ T_out be equal to external disk temperature sensor detected value Tb and indoor unit to room
Difference between the detected value Tm for the first external disk temperature sensor that outer machine detects after powering on；
Determine that refrigerant is worked as according to the interior heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference △ T_out
Preceding leakiness, the current leakiness of the refrigerant include refrigerant currently completely leakage, refrigerant be currently at it is slow
Slow leak condition, refrigerant are currently at fast leak state；
By the current leakiness of the determining refrigerant be converted into the prompt information of terminal and according to the refrigerant it is current
The difference of leakiness control whether the constant speed air-conditioning continues to run.
2. the leakage detection method of refrigerant according to claim 1, which is characterized in that when air-conditioning is in refrigeration mode,
It is described to determine that refrigerant is worked as according to the interior heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference △ T_out
Preceding leakiness, comprising:
If △ T_in (t)≤first threshold and △ T_out≤second threshold, it is out of service to control outdoor unit, guard time mistake
After restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigerant
Current leakage completely；
If first threshold < △ T_in (t) < third threshold value and second threshold≤threshold value of △ T_out≤the 4th, counter is counted
Add 1, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition；
If first threshold < △ T_in (t) < third threshold value, remember that △ T_in (t) is △ T_in (j), j is to meet " first threshold
New counting serial number under the conditions of < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the 5th threshold value,
Then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+1) >=the
Six threshold values, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△ T_in (j+
1) >=the 7th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then controls the outdoor
Machine is out of service, and guard time restarts the outdoor unit later, if △ T_in (t)≤first threshold and the threshold of △ T_out≤second
Value, it is determined that refrigerant is currently at fast leak state.
3. the leakage detection method of refrigerant according to claim 1, which is characterized in that when air-conditioning is in heating mode,
It is described to determine that refrigerant is worked as according to the interior heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference △ T_out
Preceding leakiness, comprising:
If the threshold value of △ T_in (t)≤the 8th and the threshold value of △ T_out≤the 9th, it is out of service to control outdoor unit, guard time mistake
After restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigerant
Current leakage completely；
If the tenth threshold value of the 8th threshold value < △ T_in (t) < and the 6th threshold value < △ threshold value of T_out≤the 11st, counter counts
Number plus 1, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition；
If the tenth threshold value of the 8th threshold value < △ T_in (t) <, remember that △ T_in (t) is △ T_in (j), j is to meet " first threshold
New counting serial number under the conditions of < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the 12nd threshold
Value, then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+1) >=
13rd threshold value, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△ T_in
(j+1) >=the 14th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then described in control
Outdoor unit is out of service, and guard time restarts the outdoor unit later, if eight threshold value of △ T_in (t)≤the and △ T_out≤the
Nine threshold values, it is determined that refrigerant is currently at fast leak state.
4. the leakage detection method of refrigerant according to claim 1, which is characterized in that described by the determining refrigerant
Current leakiness is converted into the prompt information of terminal and the different control institutes according to the current leakiness of the refrigerant
It states constant speed air-conditioning and whether continues to run and include:
When determining that refrigerant currently leaks completely, it is out of service to control the constant speed air-conditioning, while controlling terminal display is freezed
The prompt information that agent leaks completely；
When determining that refrigerant is currently at slow leak condition, the constant speed air-conditioning maintenance operating status is controlled, simultaneously
Controlling terminal shows that refrigerant is in the prompt information of slow leak condition；
When determining that refrigerant is currently at fast leak state, it is out of service to control the constant speed air-conditioning, while controlling terminal
Display refrigerant is in the prompt information of fast leak state.
5. a kind of leak detecting device of refrigerant, which is characterized in that be used for constant speed air-conditioning, comprising:
Module is obtained, for obtaining the constant speed air-conditioning current indoor heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference
Value △ T_out, the interior heat transfer temperature difference value △ T_in (t) is equal to the detected value Ta of inner ring temperature sensor and inner disc temperature passes
Difference between the detected value Tn of sensor, the outdoor heat exchange temperature difference △ T_out are equal to the detected value of external disk temperature sensor
Difference between the detected value Tm for the first external disk temperature sensor that Tb and indoor unit detect after powering on to outdoor unit；
Judgment module, for according to the interior heat transfer temperature difference value △ T_in (t) and the outdoor heat exchange temperature difference △ T_out
Determine that the current leakiness of refrigerant, the current leakiness of the refrigerant include that refrigerant currently leaks completely, freezes
Agent is currently at slow leak condition, refrigerant is currently at fast leak state；
Execution module, for converting the prompt information of terminal for the current leakiness of the refrigerant determined and according to institute
The difference for stating the current leakiness of refrigerant controls whether the constant speed air-conditioning continues to run.
6. the leak detecting device of refrigerant according to claim 5, which is characterized in that described when in refrigeration mode
Judgment module is used for:
If △ T_in (t)≤first threshold and △ T_out≤second threshold, it is out of service to control outdoor unit, guard time mistake
After restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigerant
Current leakage completely；
If first threshold < △ T_in (t) < third threshold value and second threshold≤threshold value of △ T_out≤the 4th, counter is counted
Add 1, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition；
If first threshold < △ T_in (t) < third threshold value, remember that △ T_in (t) is △ T_in (j), j is to meet " first threshold
New counting serial number under the conditions of < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the 5th threshold value,
Then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+1) >=the
Six threshold values, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△ T_in (j+
1) >=the 7th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then controls the outdoor
Machine is out of service, and guard time restarts the outdoor unit later, if △ T_in (t)≤first threshold and the threshold of △ T_out≤second
Value, it is determined that refrigerant is currently at fast leak state.
7. the leak detecting device of refrigerant according to claim 5, which is characterized in that described when being in heating mode
Judgment module is used for:
If the threshold value of △ T_in (t)≤the 8th and the threshold value of △ T_out≤the 9th, it is out of service to control outdoor unit, guard time mistake
After restart the outdoor unit, count is incremented for counter, when the counting of counter reaches the first threshold value i1, it is determined that refrigerant
Current leakage completely；
If the tenth threshold value of the 8th threshold value < △ T_in (t) < and the 6th threshold value < △ threshold value of T_out≤the 11st, counter counts
Number plus 1, when the counting of counter reaches the second threshold value i2, it is determined that refrigerant is currently at slow leak condition；
If the tenth threshold value of the 8th threshold value < △ T_in (t) <, remember that △ T_in (t) is △ T_in (j), j is to meet " first threshold
New counting serial number under the conditions of < △ T_in (t) < third threshold value ", if △ T_in (j)-△ T_in (j+1) >=the 12nd threshold
Value, then count is incremented for counter, when the counting of counter reaches third threshold value i3 or △ T_in (j)-△ T_in (j+1) >=
13rd threshold value, then count is incremented for counter, when the counting of counter reaches the 4th threshold value i4 or △ T_in (j)-△ T_in
(j+1) >=the 14th threshold value, then count is incremented for counter, when the counting of counter reaches the 5th threshold value i5, then described in control
Outdoor unit is out of service, and guard time restarts the outdoor unit later, if eight threshold value of △ T_in (t)≤the and △ T_out≤the
Nine threshold values, it is determined that refrigerant is currently at fast leak state.
8. the leak detecting device of refrigerant according to claim 5, which is characterized in that the execution module is used for:
When determining that refrigerant currently leaks completely, it is out of service to control the constant speed air-conditioning, while controlling terminal display is freezed
The prompt information that agent leaks completely；
When determining that refrigerant is currently at slow leak condition, the constant speed air-conditioning maintenance operating status is controlled, simultaneously
Controlling terminal shows that refrigerant is in the prompt information of slow leak condition；
When determining that refrigerant is currently at fast leak state, it is out of service to control the constant speed air-conditioning, while controlling terminal
Display refrigerant is in the prompt information of fast leak state.
9. a kind of computer readable storage medium for storing one or more programs, which is characterized in that one or more of journeys
Sequence includes instruction, and it is according to any one of claims 1-4 that described instruction when executed by a computer executes the computer
The leakage detection method of refrigerant.
10. a kind of computer program product comprising instruction, which is characterized in that when described instruction is run on computers, make
Obtain the leakage detection method that the computer executes refrigerant according to any one of claims 1-4.
11. a kind of leak detecting device of refrigerant characterized by comprising processor and memory, memory is for storing
Program, processor call the program of memory storage, to execute the leakage inspection of refrigerant according to any one of claims 1-4
Survey method.
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