CN106123205B - Moveable air conditioner and its coolant leakage detection method - Google Patents
Moveable air conditioner and its coolant leakage detection method Download PDFInfo
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- CN106123205B CN106123205B CN201610440097.7A CN201610440097A CN106123205B CN 106123205 B CN106123205 B CN 106123205B CN 201610440097 A CN201610440097 A CN 201610440097A CN 106123205 B CN106123205 B CN 106123205B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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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- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of moveable air conditioner and its coolant leakage detection methods, the described method comprises the following steps: when compressor is opened, obtaining the temperature averages T1Ave of the windward side of evaporator and the coil temperature average value T2Ave of evaporator；When the runing time of compressor reaches the first preset time, the temperature averages T1uc of the windward side of evaporator and the coil temperature average value T2uc of evaporator are obtained every the second preset time, and when the runing time of compressor reaches third preset time, the operating current of the return air temperature of condenser, the delivery temperature of compressor and compressor is obtained；Judge whether moveable air conditioner occurs coolant leakage according to the operating current of T1Ave, T1uc, T2Ave, T2uc, the return air temperature of condenser, the delivery temperature of compressor and compressor.This method can effectively judge whether moveable air conditioner occurs coolant leakage.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of moveable air conditioner and its coolant leakage detection method.
Background technique
Mobile air conditioner technology fetches water to cool down condenser from the double wind wheel that do not fetch water till now of early stage, constant in cabinet
In the case of, ability and efficiency are higher and higher.Under conditions of borrowing power to develop in split air conditioner technology, moveable air conditioner has very big
It improves, still, due to own structural characteristics, moveable air conditioner can not accomplish the level as split air conditioner in some aspects.
For example, existing secondary refrigerant leakage detection control technology has good protective effect for system and compressor, but due to moving
The own structural characteristics of dynamic formula air conditioner, if directly borrowed, it will following problems occur:
Moveable air conditioner can generate water in heating operation, accumulate on the chassis below condenser, if mistake herein
The water level on chassis is not acquired in journey, and is drained simultaneously to chassis, then will cause condensation dilutional hyponatremia and icing phenomenon occurs, Jin Erbing
There is the possibility of erroneous judgement secondary refrigerant leakage, greatly reduce the refrigeration or system of system in stifled condenser air concentrator so that system temperature is too low
Hot runing time, so that the operational effect that consumer is mistakenly considered air-conditioning is bad.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose that a kind of coolant leakage detection method of moveable air conditioner, this method can effectively judge movable type
Whether air conditioner occurs coolant leakage.
It is another object of the present invention to propose a kind of moveable air conditioner.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of coolant leakage detection of moveable air conditioner
Method, the moveable air conditioner include evaporator, condenser, water pump, chassis and compressor, wherein the water pump corresponds to institute
Condenser setting is stated, the chassis is arranged in the lower section of the condenser, the described method comprises the following steps: in the compressor
When unlatching, the temperature averages T1Ave of the windward side of the evaporator and the coil temperature average value of the evaporator are obtained
T2Ave；When the runing time of the compressor reaches the first preset time, the evaporator is obtained every the second preset time
Windward side temperature averages T1uc and the evaporator coil temperature average value T2uc, and in the operation of the compressor
When time reaches third preset time, the return air temperature of the condenser, the delivery temperature of the compressor and described are obtained
The operating current of compressor；And temperature averages T1Ave and T1uc, the evaporator of the windward side according to the evaporator
Coil temperature average value T2Ave and T2uc, the return air temperature of the condenser, the compressor delivery temperature and the pressure
The operating current of contracting machine judges whether the moveable air conditioner occurs coolant leakage.
The coolant leakage detection method of moveable air conditioner according to an embodiment of the present invention is obtained when compressor is opened
The temperature averages T1Ave of the windward side of the evaporator and coil temperature average value T2Ave of evaporator, and in the operation of compressor
When time reaches the first preset time, temperature averages T1uc and the steaming of the windward side of evaporator are obtained every the second preset time
The coil temperature average value T2uc of device is sent out, and when the runing time of compressor reaches third preset time, obtains condenser
Return air temperature, the delivery temperature of compressor and the operating current of compressor, finally, according to the temperature of the windward side of evaporator
Average value T1Ave and T1uc, coil temperature the average value T2Ave and T2uc of evaporator, the return air temperature of condenser, compressor
The operating current of delivery temperature and compressor judges whether moveable air conditioner occurs coolant leakage, to realize to mobile empty
The effective judgement for adjusting device coolant leakage, avoids judging by accident, guarantees heating or the refrigerating operaton time of moveable air conditioner, improves
User experience.
According to one embodiment of present invention, when the moveable air conditioner in a chiller mode or dehumidification mode operation
When, if the return air temperature of the condenser be greater than the first preset temperature and be less than or equal to the second preset temperature, the T1uc with
The absolute value of difference between the T2uc is less than the difference between the first default cryogenic temperature value, the T2Ave and T2uc
Absolute value is pre- less than third less than the absolute value of the difference between the second default cryogenic temperature value, the T1Ave and the T1uc
If temperature, the delivery temperature of the compressor are greater than the 4th preset temperature and the operating current of the compressor is pre- less than first
If electric current, then judge that coolant leakage occurs for the moveable air conditioner.
According to one embodiment of present invention, when the moveable air conditioner is run with heating mode, if described cold
The absolute value that the return air temperature of condenser is greater than the difference between the 5th preset temperature, the T1uc and the T2uc is pre- less than first
The absolute value of the difference between hot temperature value, the T2Ave and T2uc is equipped with less than the second default heating temperature value, described
The absolute value of difference between T1Ave and the T1uc is less than third preset temperature, the delivery temperature of the compressor is greater than the
The operating current of four preset temperatures and the compressor then judges that the moveable air conditioner occurs less than the first predetermined current
Coolant leakage.
According to one embodiment of present invention, when the moveable air conditioner is run with heating mode, also described in judgement
The rate of change of the return air temperature of condenser, if the rate of change of the return air temperature of the condenser is greater than the first default speed
Rate then first controls the moveable air conditioner and executes refrigeration defrost, and judges the movable air conditioner after freezing defrost
Whether device occurs coolant leakage.
According to one embodiment of present invention, if it is determined that coolant leakage occurs for the moveable air conditioner, then institute is controlled
Moveable air conditioner shutdown is stated, and shows fault message.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of moveable air conditioner, comprising: evaporation
Device, condenser, water pump, chassis and compressor, wherein the water pump corresponds to the condenser setting, and the chassis is arranged in institute
State the lower section of condenser；Control module, for when the compressor is opened, the temperature for obtaining the windward side of the evaporator to be flat
The coil temperature average value T2Ave of mean value T1Ave and the evaporator, and reach first in advance in the runing time of the compressor
If when the time, obtaining the temperature averages T1uc and the evaporator of the windward side of the evaporator every the second preset time
Coil temperature average value T2uc, and when the runing time of the compressor reaches third preset time, obtain the condensation
The operating current of the return air temperature of device, the delivery temperature of the compressor and the compressor, the control module is according to institute
State the temperature averages T1Ave and T1uc of the windward side of evaporator, the coil temperature average value T2Ave of the evaporator and
T2uc, the return air temperature of the condenser, the delivery temperature of the compressor and the compressor operating current judgement described in
Whether moveable air conditioner occurs coolant leakage.
Moveable air conditioner according to an embodiment of the present invention, when compressor is opened, control module obtains meeting for evaporator
The temperature averages T1Ave in the wind face and coil temperature average value T2Ave of evaporator, and reach in the runing time of compressor
When one preset time, the temperature averages T1uc of the windward side of evaporator and the coil pipe of evaporator are obtained every the second preset time
Temperature averages T2uc, and when the runing time of compressor reaches third preset time, obtain condenser return air temperature,
The delivery temperature of compressor and the operating current of compressor, finally, according to the temperature averages T1Ave of the windward side of evaporator
With T1uc, coil temperature the average value T2Ave and T2uc of evaporator, the return air temperature of condenser, compressor delivery temperature and
The operating current of compressor judges whether moveable air conditioner occurs coolant leakage, lets out to realize to moveable air conditioner refrigerant
Effective judgement of leakage, avoids judging by accident, guarantees heating or the refrigerating operaton time of moveable air conditioner, improves user experience.
According to one embodiment of present invention, when the moveable air conditioner in a chiller mode or dehumidification mode operation
When, if the return air temperature of the condenser be greater than the first preset temperature and be less than or equal to the second preset temperature, the T1uc with
The absolute value of difference between the T2uc is less than the difference between the first default cryogenic temperature value, the T2Ave and T2uc
Absolute value is pre- less than third less than the absolute value of the difference between the second default cryogenic temperature value, the T1Ave and the T1uc
If temperature, the delivery temperature of the compressor are greater than the 4th preset temperature and the operating current of the compressor is pre- less than first
If electric current, the control module then judges that coolant leakage occurs for the moveable air conditioner.
According to one embodiment of present invention, when the moveable air conditioner is run with heating mode, if described cold
The absolute value that the return air temperature of condenser is greater than the difference between the 5th preset temperature, the T1uc and the T2uc is pre- less than first
The absolute value of the difference between hot temperature value, the T2Ave and T2uc is equipped with less than the second default heating temperature value, described
The absolute value of difference between T1Ave and the T1uc is less than third preset temperature, the delivery temperature of the compressor is greater than the
The operating current of four preset temperatures and the compressor then judges the movement less than the first predetermined current, the control module
Coolant leakage occurs for formula air conditioner.
According to one embodiment of present invention, when the moveable air conditioner is run with heating mode, the control mould
Block also judges the rate of change of the return air temperature of the condenser, wherein if the variation speed of the return air temperature of the condenser
Rate is greater than the first scheduled rate, and the control module then first controls the moveable air conditioner and executes refrigeration defrost, and is freezing
Judge whether the moveable air conditioner occurs coolant leakage after defrost.
According to one embodiment of present invention, if it is determined that coolant leakage, the control occur for the moveable air conditioner
Module then controls the moveable air conditioner and shuts down, and shows fault message by the display screen of the moveable air conditioner.
Detailed description of the invention
Fig. 1 is the flow chart of the coolant leakage detection method of moveable air conditioner according to an embodiment of the present invention.
Fig. 2 a is the left view of moveable air conditioner according to an embodiment of the invention.
Fig. 2 b is the top view of moveable air conditioner according to an embodiment of the invention.
Appended drawing reference: water pump 1, water level switch 2, condenser 3, chassis 4, air draft spiral case 5, evaporator 6.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
It is detected with reference to the accompanying drawings to describe the moveable air conditioner proposed according to embodiments of the present invention and its coolant leakage
Method.
Fig. 1 is the flow chart of the coolant leakage detection method of moveable air conditioner according to an embodiment of the present invention.
In an embodiment of the present invention, moveable air conditioner may include evaporator, condenser, water pump, chassis and compressor,
Wherein, water pump corresponds to condenser setting, and the lower section of condenser is arranged in chassis.Specifically, as illustrated in figures 2 a-2b, mobile empty
Adjusting device can also include air draft spiral case and water level switch.
As shown in Figure 1, the coolant leakage detection method of the moveable air conditioner the described method comprises the following steps:
S1 obtains the temperature averages T1Ave of the windward side of evaporator and the coil pipe temperature of evaporator when compressor is opened
Spend average value T2Ave.
Specifically, can heat detector be set in the windward side structure of evaporator to detect the windward side temperature of evaporator
T1, and heat detector is set to detect the coil temperature T2 of evaporator at the flow path medium position of evaporator.In movable type
After air conditioner works on power, the temperature averages T1Ave of the windward side of compressor starts moment (a period of time) evaporator is obtained
With the coil temperature average value T2Ave of evaporator, and store.
S2 obtains evaporator every the second preset time when the runing time of compressor reaches the first preset time
The temperature averages T1uc of the windward side and coil temperature average value T2uc of evaporator, and reach in the runing time of compressor
When three preset times, the operating current of the return air temperature of condenser, the delivery temperature of compressor and compressor is obtained.
Wherein, it first can be demarcated according to the actual situation to third preset time, for example, the first preset time can be with
For 1200s, the second preset time can be 6s, and third preset time can be 1200s+2min.
S3, according to the temperature averages T1Ave and T1uc of the windward side of evaporator, the coil temperature average value of evaporator
T2Ave and T2uc, the return air temperature of condenser, the delivery temperature of compressor and compressor operating current judge movable air conditioner
Whether device occurs coolant leakage.
Third preset time (such as 1200s+ is arrived at the first preset time (such as 1200s) specifically, opening when compressor
When in 2min), every 6s calculates the temperature averages T1uc of the windward side of flush distillation device and the coil temperature average value of evaporator
T2uc.When the runing time of compressor reached on the time point of third preset time (such as 1200s+2min), condenser is obtained
Return air temperature, the delivery temperature of compressor and the operating current of compressor, and according to the return air temperature of condenser, compressor
Delivery temperature, the operating current of compressor, evaporator windward side temperature averages T1Ave and T1uc and evaporator
Coil temperature average value T2Ave and T2uc judge whether moveable air conditioner occurs coolant leakage.
According to one embodiment of present invention, when moveable air conditioner in a chiller mode or dehumidification mode run when, such as
The difference that the return air temperature of fruit condenser is greater than the first preset temperature and is less than or equal between the second preset temperature, T1uc and T2uc
Absolute value refrigeration default less than second less than the absolute value of the difference between the first default cryogenic temperature value, T2Ave and T2uc
The absolute value of difference between temperature value, T1Ave and T1uc is less than third preset temperature, the delivery temperature of compressor is greater than the 4th
The operating current of preset temperature and compressor then judges that coolant leakage occurs for moveable air conditioner less than the first predetermined current.
Wherein, first freezes to third preset temperature, the first predetermined current, the first default cryogenic temperature value and second are default
Temperature value can be demarcated according to the actual situation, for example, the first preset temperature can be such as 25 DEG C of current outdoor environment temperature,
Second preset temperature can be 45 DEG C, and third preset temperature can be 3 DEG C, and the 4th preset temperature can be 100 DEG C, and first is default
Electric current can be 4A.
That is, when moveable air conditioner in a chiller mode or dehumidification mode run when, when following condition is all satisfied
When, it can be determined that coolant leakage occurs for moveable air conditioner:
(a) such as 45 DEG C of the preset temperature of return air temperature T3≤second of 25 DEG C of < condensers of outdoor environment temperature when freezing；
(b) | T1uc-T2uc | < first presets cryogenic temperature value coolT1；
(c) | T2Ave-T2uc | < second presets cryogenic temperature value coolT2；
(d) | T1Ave-T1uc | such as 3 DEG C of < third preset temperature；
(e) the operating current < first of such as 100 DEG C of the 4th preset temperature of delivery temperature > of compressor and compressor is default
Electric current such as 4A.
According to one embodiment of present invention, when moveable air conditioner is run with heating mode, if condenser returns
Air temperature be greater than the absolute value of difference between the 5th preset temperature, T1uc and T2uc less than the first default heating temperature value,
The absolute value of difference between T2Ave and T2uc is exhausted less than the difference between the second default heating temperature value, T1Ave and T1uc
Third preset temperature is less than to value, the delivery temperature of compressor is less than greater than the operating current of the 4th preset temperature and compressor
First predetermined current then judges that coolant leakage occurs for moveable air conditioner.Wherein, the 5th preset temperature, the first default heating temperature
Angle value and the second default heating temperature value can be demarcated according to the actual situation, for example, the 5th preset temperature can be 0 DEG C.
That is, when moveable air conditioner is run with heating mode, when following condition is all satisfied, it can be determined that move
Coolant leakage occurs for dynamic formula air conditioner:
(a) such as 0 DEG C of the preset temperature of return air temperature T3 >=the 5th of condenser；
(b) | T1uc-T2uc | the default heating temperature value heatT1 of < first；
(c) | T2Ave-T2uc | the default heating temperature value heatT2 of < second；
(d) | T1Ave-T1uc | such as 3 DEG C of < third preset temperature；
(e) the operating current < first of such as 100 DEG C of the 4th preset temperature of delivery temperature > of compressor and compressor is default
Electric current such as 4A.
If it is determined that coolant leakage occurs for moveable air conditioner, then moveable air conditioner shutdown is controlled, and shows that failure is believed
Breath.When moveable air conditioner is switched on again, fault message will be automatically cleared, and continue to judge to move according to above-mentioned condition
Whether formula air conditioner occurs coolant leakage.If above-mentioned condition has a condition to be unsatisfactory for, judge that moveable air conditioner is not sent out
Raw coolant leakage, whether no longer detection refrigerant leaks at this time, until carrying out refrigerant detection again when booting next time.
According to one embodiment of present invention, when moveable air conditioner is run with heating mode, also judge condenser
The rate of change of return air temperature, if the rate of change of the return air temperature of condenser is greater than the first scheduled rate, first control is moved
Dynamic formula air conditioner executes refrigeration defrost, and judges whether moveable air conditioner occurs coolant leakage after freezing defrost.
Specifically, in case of frosting or icing, will lead to condensation in moveable air conditioner heating process
The return air temperature T3 variation of device is too fast, in practical applications, 2-3 DEG C may be reduced suddenly, if at this time directly according to above-mentioned item
Part judges whether refrigerant leaks, then may judge by accident, it is therefore desirable to first control moveable air conditioner and execute refrigerationization
Frost, and after the completion of defrost, judge whether moveable air conditioner occurs coolant leakage, to further increase the accurate of judgement
Property.
In addition, in an embodiment of the present invention, being run or being judged mobile empty with heating mode in moveable air conditioner
When device being adjusted whether coolant leakage to occur, control water pump is in running order, so that the water level of condenser is less than the water level in chassis,
To effectively prevent water level excessively high, condenser is too cold, frosting and icing occurs, causes system temperature unchanged, and then cause cold
The erroneous judgement of matchmaker's leakage.
In conclusion the coolant leakage detection method of moveable air conditioner according to an embodiment of the present invention, is opened in compressor
Qi Shi obtains the temperature averages T1Ave of the windward side of evaporator and the coil temperature average value T2Ave of evaporator, and is pressing
When the runing time of contracting machine reaches the first preset time, the temperature-averaging of the windward side of evaporator is obtained every the second preset time
The coil temperature average value T2uc of value T1uc and evaporator, and when the runing time of compressor reaches third preset time,
Return air temperature, the delivery temperature of compressor and the operating current of compressor for obtaining condenser, finally, meeting according to evaporator
The return air temperature of the temperature averages T1Ave and T1uc in wind face, coil temperature the average value T2Ave and T2uc of evaporator, condenser
The operating current of degree, the delivery temperature of compressor and compressor judges whether moveable air conditioner occurs coolant leakage, thus real
It now to effective judgement of moveable air conditioner coolant leakage, avoids judging by accident, guarantees the heating or refrigeration of moveable air conditioner
Runing time improves user experience.
Fig. 2 is the structural schematic diagram of moveable air conditioner according to an embodiment of the invention.As shown in Fig. 2, the movement
Formula air conditioner can include: water pump 1, water level switch 2, condenser 3, chassis 4, air draft spiral case 5, evaporator 6, compressor are (in figure not
Specifically illustrate) and control module (not specifically illustrated in figure).
Wherein, the corresponding condenser 3 of water pump 1 is arranged, and the lower section of condenser 3 is arranged in chassis 4.Control module is for compressing
When machine is opened, the temperature averages T1Ave of the windward side of evaporator 6 and the coil temperature average value T2Ave of evaporator 6 are obtained,
And when the runing time of compressor reaches the first preset time, the windward side of evaporator 6 is obtained every the second preset time
The coil temperature average value T2uc of temperature averages T1uc and evaporator 6, and to reach third pre- in the runing time of compressor
If when the time, obtaining return air temperature, the delivery temperature of compressor and the operating current of compressor of condenser 3, control module
According to the temperature averages T1Ave and T1uc of the windward side of evaporator 6, evaporator 6 coil temperature average value T2Ave and
T2uc, the return air temperature of condenser 3, the delivery temperature of compressor and compressor operating current whether judge moveable air conditioner
Coolant leakage occurs.
Specifically, can heat detector be set in the windward side structure of evaporator 6 to detect the windward side temperature of evaporator
T1 is spent, and heat detector is set to detect the coil temperature T2 of evaporator at the flow path medium position of evaporator 6.In movement
After formula air conditioner works on power, control module obtains compressor starts moment (a period of time) evaporator 6 by heat detector
Windward side temperature averages T1Ave and evaporator 6 coil temperature average value T2Ave, and store.
When compressor open the first preset time (such as 1200s) to third preset time (such as 1200s+2min) it is interior when,
The every 6s of control module calculates the temperature averages T1uc of the windward side of flush distillation device 6 and the coil temperature average value of evaporator 6
T2uc.When the runing time of compressor reached on the time point of third preset time (such as 1200s+2min), control module is obtained
The operating current of the return air temperature of condenser 3, the delivery temperature of compressor and compressor is taken, and according to the return air of condenser 3
Temperature, the delivery temperature of compressor, the operating current of compressor, evaporator 6 windward side temperature averages T1Ave and T1uc
And coil temperature the average value T2Ave and T2uc of evaporator 6 judge whether moveable air conditioner occurs coolant leakage.
According to one embodiment of present invention, when moveable air conditioner in a chiller mode or dehumidification mode run when, such as
The difference that the return air temperature of fruit condenser 3 is greater than the first preset temperature and is less than or equal between the second preset temperature, T1uc and T2uc
The absolute value of value is equipped with less than the absolute value of the difference between the first default cryogenic temperature value, T2Ave and T2uc less than second in advance
The absolute value of difference between cold temperature value, T1Ave and T1uc is less than third preset temperature, the delivery temperature of compressor is greater than the
The operating current of four preset temperatures and compressor then judges moveable air conditioner less than the first predetermined current, control module
Coolant leakage.Wherein, the first preset temperature can be such as 25 DEG C of current outdoor environment temperature, and the second preset temperature can be 45
DEG C, third preset temperature can be 3 DEG C, and the 4th preset temperature can be 100 DEG C, and the first predetermined current can be 4A.
That is, when moveable air conditioner in a chiller mode or dehumidification mode run when, when following condition is all satisfied
When, control module may determine that coolant leakage occurs for moveable air conditioner:
(a) such as 45 DEG C of the preset temperature of return air temperature T3≤second of 25 DEG C of < condensers of outdoor environment temperature when freezing；
(b) | T1uc-T2uc | < first presets cryogenic temperature value coolT1；
(c) | T2Ave-T2uc | < second presets cryogenic temperature value coolT2；
(d) | T1Ave-T1uc | such as 3 DEG C of < third preset temperature；
(e) the operating current < first of such as 100 DEG C of the 4th preset temperature of delivery temperature > of compressor and compressor is default
Electric current such as 4A.
According to one embodiment of present invention, when moveable air conditioner is run with heating mode, if condenser 3 returns
Air temperature be greater than the absolute value of difference between the 5th preset temperature, T1uc and T2uc less than the first default heating temperature value,
The absolute value of difference between T2Ave and T2uc is exhausted less than the difference between the second default heating temperature value, T1Ave and T1uc
Third preset temperature is less than to value, the delivery temperature of compressor is less than greater than the operating current of the 4th preset temperature and compressor
First predetermined current, control module then judge that coolant leakage occurs for moveable air conditioner.Wherein, the 5th preset temperature can be 0
℃。
That is, when following condition is all satisfied, control module can when moveable air conditioner is run with heating mode
To judge that coolant leakage occurs for moveable air conditioner:
(a) such as 0 DEG C of the preset temperature of return air temperature T3 >=the 5th of condenser；
(b) | T1uc-T2uc | the default heating temperature value heatT1 of < first；
(c) | T2Ave-T2uc | the default heating temperature value heatT2 of < second；
(d) | T1Ave-T1uc | such as 3 DEG C of < third preset temperature；
(e) the operating current < first of such as 100 DEG C of the 4th preset temperature of delivery temperature > of compressor and compressor is default
Electric current such as 4A.
If it is determined that coolant leakage occurs for moveable air conditioner, control module then controls moveable air conditioner shutdown, and leads to
The display screen for crossing moveable air conditioner shows fault message.When moveable air conditioner is switched on again, fault message will be automatic
It removes, and control module continues to judge whether moveable air conditioner occurs coolant leakage according to above-mentioned condition.If above-mentioned item
Part has a condition to be unsatisfactory for, and control module then judges that coolant leakage does not occur for moveable air conditioner, no longer detects refrigerant at this time
Whether leak, until carrying out refrigerant detection again when booting next time.
According to one embodiment of present invention, when moveable air conditioner is run with heating mode, control module also judges
The rate of change of the return air temperature of condenser 3, if the rate of change of the return air temperature of condenser 3 is greater than the first scheduled rate,
Then first control moveable air conditioner executes refrigeration defrost to control module, and judges that moveable air conditioner is after freezing defrost
No generation coolant leakage.
Specifically, in case of frosting or icing, will lead to condensation in moveable air conditioner heating process
The return air temperature T3 variation of device is too fast, in practical applications, 2-3 DEG C may be reduced suddenly, if the direct root of control module at this time
Judge whether refrigerant leaks according to above-mentioned condition, then may judge by accident, it is therefore desirable to first control moveable air conditioner and hold
Row refrigeration defrost, and after the completion of defrost, judge whether moveable air conditioner occurs coolant leakage, to further increase judgement
Accuracy.
In addition, in an embodiment of the present invention, being run or being judged mobile empty with heating mode in moveable air conditioner
When device being adjusted whether coolant leakage to occur, it is in running order that control module controls water pump, so that the water level of condenser 3 is less than chassis
In water level, to effectively prevent water level excessively high, condenser is too cold, frosting and icing occurs, cause system temperature unchanged, into
And lead to the erroneous judgement of coolant leakage.
Moveable air conditioner according to an embodiment of the present invention, when compressor is opened, control module obtains meeting for evaporator
The temperature averages T1Ave in the wind face and coil temperature average value T2Ave of evaporator, and reach in the runing time of compressor
When one preset time, the temperature averages T1uc of the windward side of evaporator and the coil pipe of evaporator are obtained every the second preset time
Temperature averages T2uc, and when the runing time of compressor reaches third preset time, obtain condenser return air temperature,
The delivery temperature of compressor and the operating current of compressor, finally, according to the temperature averages T1Ave of the windward side of evaporator
With T1uc, coil temperature the average value T2Ave and T2uc of evaporator, the return air temperature of condenser, compressor delivery temperature and
The operating current of compressor judges whether moveable air conditioner occurs coolant leakage, lets out to realize to moveable air conditioner refrigerant
Effective judgement of leakage, avoids judging by accident, guarantees heating or the refrigerating operaton time of moveable air conditioner, improves user experience.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of coolant leakage detection method of moveable air conditioner, which is characterized in that the moveable air conditioner includes evaporation
Device, condenser, water pump, chassis and compressor, wherein the water pump corresponds to the condenser setting, and the chassis is arranged in institute
The lower section for stating condenser, the described method comprises the following steps:
When the compressor is opened, the temperature averages T1Ave and the evaporator of the windward side of the evaporator are obtained
Coil temperature average value T2Ave；
When the runing time of the compressor reaches the first preset time, the evaporator is obtained every the second preset time
The temperature averages T1uc of the windward side and coil temperature average value T2uc of the evaporator, and in the operation of the compressor
Between when reaching third preset time, obtain the return air temperature of the condenser, the delivery temperature of the compressor and the pressure
The operating current of contracting machine；And
According to the temperature averages T1Ave and T1uc of the windward side of the evaporator, the coil temperature average value of the evaporator
T2Ave and T2uc, the return air temperature of the condenser, the delivery temperature of the compressor and the compressor operating current sentence
Whether the moveable air conditioner that breaks occurs coolant leakage, wherein when the moveable air conditioner is run with heating mode, also
The rate of change of the return air temperature of the condenser is judged, if the rate of change of the return air temperature of the condenser is greater than first
Scheduled rate then first controls the moveable air conditioner and executes refrigeration defrost, and judges the movement after freezing defrost
Whether formula air conditioner occurs coolant leakage.
2. the coolant leakage detection method of moveable air conditioner according to claim 1, which is characterized in that when the movement
When formula air conditioner is in a chiller mode or dehumidification mode is run,
If the return air temperature of the condenser be greater than the first preset temperature and be less than or equal to the second preset temperature, the T1uc with
The absolute value of difference between the T2uc is less than the difference between the first default cryogenic temperature value, the T2Ave and T2uc
Absolute value is pre- less than third less than the absolute value of the difference between the second default cryogenic temperature value, the T1Ave and the T1uc
If temperature, the delivery temperature of the compressor are greater than the 4th preset temperature and the operating current of the compressor is pre- less than first
If electric current, then judge that coolant leakage occurs for the moveable air conditioner.
3. the coolant leakage detection method of moveable air conditioner according to claim 1 or 2, which is characterized in that when described
When moveable air conditioner is run with heating mode,
If the return air temperature of the condenser is greater than the exhausted of the difference between the 5th preset temperature, the T1uc and the T2uc
Absolute value to value less than the difference between the first default heating temperature value, the T2Ave and T2uc is less than the second default heating
The absolute value of difference between temperature value, the T1Ave and the T1uc is less than the exhaust of third preset temperature, the compressor
Temperature less than the first predetermined current, then judges the movable type greater than the operating current of the 4th preset temperature and the compressor
Coolant leakage occurs for air conditioner.
4. the coolant leakage detection method of moveable air conditioner according to claim 3, which is characterized in that if it is determined that institute
It states moveable air conditioner and coolant leakage occurs, then control the moveable air conditioner and shut down, and show fault message.
5. a kind of moveable air conditioner characterized by comprising
Evaporator, condenser, water pump, chassis and compressor, wherein the water pump corresponds to the condenser setting, the chassis
The lower section of the condenser is set；
Control module, for the compressor open when, obtain the windward side of the evaporator temperature averages T1Ave and
The coil temperature average value T2Ave of the evaporator, and when the runing time of the compressor reaches the first preset time, often
It is put down every the coil temperature of temperature averages T1uc and the evaporator that the second preset time obtains the windward side of the evaporator
Mean value T2uc, and when the runing time of the compressor reaches third preset time, obtain the return air temperature of the condenser
The operating current of degree, the delivery temperature of the compressor and the compressor, the control module is according to the evaporator
Temperature averages T1Ave and T1uc, coil temperature the average value T2Ave and T2uc of the evaporator, the condensation of windward side
The operating current of the return air temperature of device, the delivery temperature of the compressor and the compressor judges that the moveable air conditioner is
No generation coolant leakage, wherein when the moveable air conditioner is run with heating mode, described in the control module also judges
The rate of change of the return air temperature of condenser, wherein if the rate of change of the return air temperature of the condenser is greater than first in advance
If rate, the control module then first controls the moveable air conditioner and executes refrigeration defrost, and sentences after freezing defrost
Whether the moveable air conditioner that breaks occurs coolant leakage.
6. moveable air conditioner according to claim 5, which is characterized in that when the moveable air conditioner in a chiller mode
Or when dehumidification mode operation,
If the return air temperature of the condenser be greater than the first preset temperature and be less than or equal to the second preset temperature, the T1uc with
The absolute value of difference between the T2uc is less than the difference between the first default cryogenic temperature value, the T2Ave and T2uc
Absolute value is pre- less than third less than the absolute value of the difference between the second default cryogenic temperature value, the T1Ave and the T1uc
If temperature, the delivery temperature of the compressor are greater than the 4th preset temperature and the operating current of the compressor is pre- less than first
If electric current, the control module then judges that coolant leakage occurs for the moveable air conditioner.
7. moveable air conditioner according to claim 5 or 6, which is characterized in that when the moveable air conditioner is to heat
When mode operation,
If the return air temperature of the condenser is greater than the exhausted of the difference between the 5th preset temperature, the T1uc and the T2uc
Absolute value to value less than the difference between the first default heating temperature value, the T2Ave and T2uc is less than the second default heating
The absolute value of difference between temperature value, the T1Ave and the T1uc is less than the exhaust of third preset temperature, the compressor
Temperature greater than the operating current of the 4th preset temperature and the compressor less than the first predetermined current, then sentence by the control module
Coolant leakage occurs for the moveable air conditioner that breaks.
8. moveable air conditioner according to claim 7, which is characterized in that if it is determined that the moveable air conditioner occurs
Coolant leakage, the control module then controls the moveable air conditioner and shuts down, and passes through the display of the moveable air conditioner
Screen display fault message.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106595137A (en) * | 2016-12-19 | 2017-04-26 | 珠海格力电器股份有限公司 | Evaporator heat exchange assembly and air-conditioning unit |
| CN106839283A (en) * | 2017-01-05 | 2017-06-13 | 青岛海尔空调器有限总公司 | The detection method of coolant leakage |
| CN107525211B (en) * | 2017-07-17 | 2020-06-30 | 青岛海尔空调器有限总公司 | Air conditioner and fault detection and processing method of supercooling pipe set of air conditioner |
| CN108088051A (en) * | 2017-12-01 | 2018-05-29 | 芜湖美智空调设备有限公司 | Fault detection method, air conditioner and the storage medium of cooler compressor |
| CN108518796B (en) * | 2018-03-30 | 2020-03-06 | 珠海格力电器股份有限公司 | Control method and device for air conditioner water pump and air conditioner water pump |
| CN110940047B (en) * | 2018-09-21 | 2021-04-02 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and air conditioner |
| CN109631229B (en) * | 2019-01-31 | 2020-10-09 | 四川长虹空调有限公司 | Method for judging rapid leakage of refrigerant of refrigeration system |
| CN111256253A (en) * | 2020-01-19 | 2020-06-09 | 珠海格力电器股份有限公司 | Refrigerant storage amount detection method, refrigerant storage amount detection device and air conditioner |
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