CN105605739B - The monitoring method and device of air-conditioning system and its coolant leakage - Google Patents
The monitoring method and device of air-conditioning system and its coolant leakage Download PDFInfo
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- CN105605739B CN105605739B CN201610020852.6A CN201610020852A CN105605739B CN 105605739 B CN105605739 B CN 105605739B CN 201610020852 A CN201610020852 A CN 201610020852A CN 105605739 B CN105605739 B CN 105605739B
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to field of air conditioning more particularly to a kind of air-conditioning system and its monitoring methods and device of coolant leakage.In air-conditioning system operational process, by by compressor real time execution frequency Fr1, default maximum frequency values Fr corresponding with real-time outdoor environment temperature and preset temperature protection threshold value Tmax are compared real time exhaust gas temperature Tp respectively, as Fr1 ＜ Fr N and Tp ＞ Tmax, judge that refrigerant may leak, leakage whether the refrigerant of air-conditioning system can be occurred monitor in advance in real time, in the case where judging that refrigerant may leak, preferably automatically into the detection verification step of coolant leakage, to be timely and effectively just detected when refrigerant has a small amount of leakage, the refrigerant adverse consequences that further leakage causes the effect variation of air-conditioning system then to influence user experience is avoided to occur.
Description
Technical field
The invention belongs to field of air conditioning more particularly to a kind of air-conditioning system and its monitoring methods and device of coolant leakage.
Background technology
For air conditioner user, it is likely to encounter asking for air conditioner refrigerating or heating effect difference when using air-conditioning
Topic, and often coolant leakage the reason of lead to the problem.The internal-external machine of general splitting air conditioner, is required for user house
The connector of middle progress in-site installation and connection, internal-external machine is susceptible to unstable phenomenon, or the long-term fortune in air conditioner
During row vibrations, other copper pipe fragility positions are likely to the case where coolant leakage occur.Within air-conditioning systems, refrigerant is let out
Leakage can reduce compressor sucking coolant quantity, cause refrigerant take away compressor electric motor calorific value reduce, cause compressor heat without
Method is discharged, and exhaust port temperatures rise, and are damaged to compressor.
Although majority air-conditioning system comes with the excessively high defencive function of compressor exhaust temperature, booting operation next time now
Still the phenomenon that will appear excessive discharge temperature, repeatedly running lead to coolant leakage amount meeting bigger, are also got over to the injury of air-conditioning
Greatly.Therefore, coolant leakage can cause air conditioning capacity to decline, and cooling or heating effect is gradually deteriorated, in addition leakage it is serious when can damage
Compressor causes serious loss.And currently, coolant leakage phenomenon is usually just can quilt when user feedback air-conditioning effect is very poor
It was found that and the coolant leakage amount of air-conditioning system is often more at this time, and to user life cause large effect.
Invention content
In view of this, the purpose of the present invention is to be to provide a kind of air-conditioning system and its monitoring method and dress of coolant leakage
It sets, is monitored in real time to whether the refrigerant of air-conditioning system leaks, solving existing air-conditioning system cannot find that refrigerant is let out in time
The technical issues of leaking phenomenon.
In a first aspect, the monitoring method of air-conditioning system coolant leakage provided by the invention, including：
Detect the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system；
It tables look-up and obtains the maximum frequency values Fr of preset compressor at this temperature；
Obtain the real time execution frequency Fr1 and real time exhaust gas temperature Tp of compressor；
By the real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with the maximum frequency values Fr and preset temperature
Degree rotection thresholds Tmax is compared；
As Fr1 ＜ Fr-N and Tp ＞ Tmax, judge that refrigerant may leak；Wherein N be it is preset be not less than 3 it is normal
Number.
Second aspect, the monitoring device of air-conditioning system coolant leakage provided by the invention, including：
Outdoor temperature acquiring unit, for detecting the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system；
Maximum frequency acquiring unit, for the maximum frequency values Fr for obtaining preset compressor at this temperature that tables look-up；
First parameter acquiring unit, the real time execution frequency Fr1 for obtaining compressor and real time exhaust gas temperature Tp；
First comparing unit, for by the real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with the maximum
Frequency value F r and preset temperature protection threshold value Tmax are compared；
Pre- judging unit, for as Fr1 ＜ Fr-N and Tp ＞ Tmax, judging that refrigerant may leak；Wherein N is pre-
If be not less than 3 constant.
The third aspect, the present invention also provides a kind of air-conditioning systems.The built-in air-conditioning system as described above of the air-conditioning system
The monitoring device of coolant leakage.
It, can be to air-conditioning system according to air-conditioning system provided by the invention and its monitoring method and device of coolant leakage
Whether refrigerant, which occurs leakage, monitor in advance in real time, in the case where judging that refrigerant may leak, can both submit to
User is handled, can also be automatically into the detection verification step of coolant leakage, timely and effectively to have on a small quantity in refrigerant
It is just detected when leakage, avoiding refrigerant, further leakage causes the effect variation of air-conditioning system then to influence user experience
Adverse consequences occurs.
Description of the drawings
Fig. 1 is the implementation flow chart of the monitoring method for the air-conditioning system coolant leakage that one embodiment of the invention provides；
Fig. 2 is the implementation flow chart of the monitoring method for the air-conditioning system coolant leakage that another embodiment of the present invention provides；
Fig. 3 is the structure diagram of the monitoring device for the air-conditioning system coolant leakage that one embodiment of the invention provides；
Fig. 4 is the structure diagram of the monitoring device for the air-conditioning system coolant leakage that another embodiment of the present invention provides.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is the implementation flow chart of the monitoring method for the air-conditioning system coolant leakage that one embodiment of the invention provides；In order to
Convenient for explanation, only the parts related to this embodiment are shown, as shown in the figure：
The monitoring method of air-conditioning system coolant leakage provided in this embodiment, includes the following steps：
In step slo, the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system is detected；
In step S20, tables look-up and obtain the maximum frequency values Fr of preset compressor at this temperature；
In step s 30, the real time execution frequency Fr1 and real time exhaust gas temperature Tp of compressor are obtained；
In step s 40, by the real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with the maximum frequency values
Fr and preset temperature protection threshold value Tmax are compared；
In step s 50, as Fr1 ＜ Fr-N and Tp ＞ Tmax, judge that refrigerant may leak；Wherein N is default
Be not less than 3 constant.
According to the monitoring method of air-conditioning system coolant leakage provided in this embodiment, the refrigerant to air-conditioning system may be implemented
Whether generation leakage monitor in advance in real time.
Specifically, in step S10-S20, first detection obtains the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system,
The maximum frequency values Fr of preset compressor at this temperature is obtained by tabling look-up again.It preferably, can be by being set to air-conditioning system
It unites the temperature sensor of outdoor unit or environment temperature sensing package detects the current outdoor environment temperature Tw residing for outdoor unit, obtaining
Current outdoor environment temperature Tw and then the maximum frequency values for finding by tabling look-up compressor corresponding with the temperature value
Fr.It follows that the one-to-one relationship of the maximum frequency values Fr of outdoor environment temperature Tw and compressor is that manufacture is preceding just pre-
First set, preferably, in view of the feasibility of compressor frequency adjustment, a usually outdoor environment temperature value section
The maximum frequency values Fr of a corresponding compressor.
After the maximum frequency values Fr for obtaining outdoor environment temperature Tw and corresponding compressor, compressor is further obtained
Real time execution frequency Fr1 and exhaust outlet of compressor real time exhaust gas temperature Tp；And the real time execution frequency Fr1 is arranged with real-time
Temperature degree Tp is compared with maximum frequency values Fr above-mentioned and preset temperature protection threshold value Tmax respectively.Herein, have one
The crucial data of a comparison：Preset temperature protection threshold value Tmax.Because coolant leakage will necessarily reduce compressor sucking refrigerant
Amount causes the calorific value that refrigerant takes away compressor electric motor to reduce, and exhaust port temperatures just rise, therefore, in real time exhaust gas temperature Tp
When relatively high, it should just consider whether to have occurred that coolant leakage.Preferably, being more than in real time exhaust gas temperature Tp
After preset temperature protection threshold value Tmax, further judge the real time execution frequency Fr1 of compressor whether still far from aforementioned
Maximum frequency values Fr, in general, real time execution frequency Fr1 and maximum frequency values can be weighed by the way that parameter N is arranged
Gap between Fr, further, N are constant, and are preferred with N >=3.As Tp ＞ Tmax and Fr1 ＜ Fr-N, can tentatively sentence
Disconnected refrigerant may leak.Until this step, the monitoring method of air-conditioning system coolant leakage provided in an embodiment of the present invention,
The real-time monitoring whether leaked refrigerant is realized, also, is the compressor in air-conditioning system according to mesh set by user
It is carried out in mark indoor temperature normal course of operation, inside and outside rotation speed of fan is also set by user oneself, therefore can't be to user
Normal use air-conditioning has any impact.Once reaching the anticipation condition of coolant leakage, being judged as refrigerant may leak, into
One step can further be confirmed so that whether alerting users leak refrigerant or automatically into judgement confirmation stage, to avoid
Other accidents.
On the other hand, above-mentioned detection method by real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with maximum frequency
After the step of rate value Fr and preset temperature protection threshold value Tmax are compared, as that preferred embodiment, it can also wrap
Following steps, even Fr1 >=Fr-N are included, then reduce the running frequency of compressor.That is, real time execution frequency Fr1 with
Maximum frequency values Fr relatively in the case of, operation of the mode to air-conditioning system for reducing compressor operating frequency can be taken
It is adjusted, to reduce the probability of erroneous judgement, improves accuracy.
Coolant leakage is prejudged in the monitoring method of the air-conditioning system coolant leakage provided according to above-described embodiment
Later, the step of can both having sent out alerting users and do the signal being further detected and confirmed, and can also having confirmed automatically into judgement
In.Fig. 2 is the implementation flow chart of the monitoring method for the air-conditioning system coolant leakage for showing that another embodiment of the present invention provides.Ginseng
See Fig. 2：In the present embodiment shown in Fig. 2, other than the step S10-S50 disclosed including previous embodiment, further include with
The step of lower air-conditioning system automatically confirms that judgement：
In step S60, control air-conditioning system runs a preset time T according to the preset parameter of setting；The fixed ginseng
Number includes the rotating speed Pw of the running frequency Fr2 of compressor, the rotating speed Pn of indoor fan and outdoor fan；
In step S70, the current value I1 and real time exhaust gas temperature Tp1 of compressor are obtained；
In step S80, by the current value I1 of the compressor and real time exhaust gas temperature Tp1 respectively with air-conditioning system standard
Minimum current value I and maximum temperature values Tpm under operating mode are compared；
In step S90, if I1 ＜ I and Tp1 ＞ Tpm, judge to determine that the refrigerant of air-conditioning system leaks.
In the present embodiment, the monitoring method of air-conditioning system coolant leakage is after judging that refrigerant may leak, again
The stage confirmed automatically into judgement.First, control air-conditioning system runs a preset time T according to the preset parameter of setting, should
Preset parameter includes the rotating speed Pw of the running frequency Fr2 of compressor, the rotating speed Pn of indoor fan and outdoor fan.Enter judgement
After confirmation stage, the compressor frequency of air-conditioning system is adjusted to preset fixed value Fr2 (such as Fr2=50HZ), interior exogenous wind
Machine rotating speed is also transferred to preset rotating speed Pn and Pw respectively, and according to this one preset time T of preset parameter continuous service, waits for operating mode
After stabilization, obtains the current value I1 of compressor and obtain the real time exhaust gas temperature Tp1 of compressor again, the two is distinguished
With under air-conditioning system standard condition minimum current value I and maximum temperature values Tpm be compared.In specific implementation, elder generation is needed
Table look-up the minimum current value I and maximum temperature values Tpm for obtaining air-conditioning system under the standard condition of current operation mode, and works
Pattern includes refrigeration mode, heating mode and dehumidification mode, but not limited to this three classes.That is, obtaining pressure
After the current value I1 and real time exhaust gas temperature Tp1 of contracting machine, first obtained according to the current operating mode of air-conditioning system to table look-up
Minimum current value I under standard condition and maximum temperature values Tpm, multiple validity test is it is found that prestore generally before manufacture
In system.Then, then by the current value I1 of compressor and real time exhaust gas temperature Tp1 respectively with the work at present mould of air-conditioning system
Minimum current value I and maximum temperature values Tpm under formula standard condition are compared.If occur I1 ＜ I and Tp1 ＞ Tpm simultaneously at
It is vertical, then it can determine that the refrigerant of air-conditioning system leaks.
Preferably, after judging to determine that the refrigerant of air-conditioning system leaks, air-conditioning system provided by the invention is cold
The monitoring method of matchmaker's leakage can also include the following steps：Coolant leakage alarm signal is generated, and exports the alarm signal.By
The alarm signal can take corresponding treatment measures with active warning client.
The present invention also provides a kind of monitoring devices of air-conditioning system coolant leakage.Fig. 3 and Fig. 4 respectively illustrate the present invention
The structure diagram of the monitoring device for the air-conditioning system coolant leakage that two embodiments provide.Likewise, for convenience of description, all only
Show part related to the present embodiment.
Referring to Fig. 3, the monitoring device of air-conditioning system coolant leakage provided in an embodiment of the present invention, including：
Outdoor temperature acquiring unit 11, for detecting the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system；
Maximum frequency acquiring unit 12, for the maximum frequency values Fr for obtaining preset compressor at this temperature that tables look-up；
First parameter acquiring unit 13, the real time execution frequency Fr1 for obtaining compressor and real time exhaust gas temperature Tp；
First comparing unit 14, for by the real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with it is described most
Big frequency value F r and preset temperature protection threshold value Tmax is compared；
Pre- judging unit 15, for as Fr1 ＜ Fr-N and Tp ＞ Tmax, judging that refrigerant may leak；Wherein N is
It is preset be not less than 3 constant.
Referring to Fig. 4, in the present embodiment shown in Fig. 4, in addition to including that outdoor temperature disclosed in previous embodiment obtains list
Except member 11, maximum frequency acquiring unit 12, the first parameter acquiring unit 13, the first comparing unit 14 and pre- judging unit 15,
The monitoring device of the air-conditioning system coolant leakage further includes：
First regulation and control unit 16 runs a preset time T for controlling air-conditioning system according to the preset parameter of setting；It is described
Preset parameter includes the rotating speed Pw of the running frequency Fr2 of compressor, the rotating speed Pn of indoor fan and outdoor fan；
Second parameter acquiring unit 17, the current value I1 for obtaining compressor and real time exhaust gas temperature Tp1；
Second comparing unit 18, for by the current value I1 of the compressor and real time exhaust gas temperature Tp1 respectively with air-conditioning
Minimum current value I and maximum temperature values Tpm under system standard operating mode are compared；
Judge confirmation unit 19, if being used for I1 ＜ I and Tp1 ＞ Tpm, judges to determine that the refrigerant of air-conditioning system leaks.
Preferably, the monitoring device of the air-conditioning system coolant leakage can also include：Alarm unit, for judging really
The refrigerant for determining air-conditioning system occurs to generate coolant leakage alarm signal after leakage, and exports the alarm signal；Alternatively, second adjusts
Unit is controlled, for as Fr1 >=Fr-N, reducing the running frequency of compressor.In order to briefly explain, just all it is not shown in attached drawing.
Finally, the embodiment of the present invention also provides a kind of air-conditioning system.The just built-in each embodiment institute as above of the air-conditioning system
The coolant leakage monitoring device stated.Because other aspects to air-conditioning system have no improvement, details are not described herein again.
In conclusion according to air-conditioning system provided by the invention and its monitoring method and device of coolant leakage, it can be right
Whether the refrigerant of air-conditioning system, which occurs leakage, monitor in advance in real time, in the case where judging that refrigerant may leak,
Both it can be handled with alerting users, it can also be automatically into the detection verification step of coolant leakage, timely and effectively to exist
Refrigerant is just detected when having a small amount of leakage, and avoiding refrigerant, further leakage causes the effect variation of air-conditioning system then to influence
The adverse consequences of user experience occurs.
It is worth noting that, in above-described embodiment, included each unit is only divided according to function logic,
But it is not limited to above-mentioned division, as long as corresponding function can be realized；In addition, the specific name of each functional unit
Only to facilitate mutually distinguishing, the protection domain being not intended to restrict the invention.
In addition, it is apparent to those skilled in the art that, for convenience of description and succinctly, only with above-mentioned
The division progress of each functional unit, can be as needed and by above-mentioned function distribution by different for example, in practical application
Functional unit is completed, i.e., the internal structure of described device is divided into different functional units or module, to complete above description
All or part of function.Each functional unit in embodiment can be integrated in a processing unit, can also be each
Unit physically exists alone, can also be during two or more units are integrated in one unit, and above-mentioned integrated unit both may be used
It realizes, can also be realized in the form of SFU software functional unit in the form of using hardware.In addition, the specific name of each functional unit
Claim also only to facilitate mutually distinguishing, the protection domain being not intended to limit this application.The specific work of unit in above-mentioned apparatus
Make process, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, although with reference to aforementioned reality
It applies example the present invention be relatively described in detail, it for those skilled in the art, still can be to aforementioned each reality
The technical solution recorded in example is applied to modify or equivalent replacement of some of the technical features.It is all the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within spirit and principle.
Claims (8)
1. a kind of monitoring method of air-conditioning system coolant leakage, which is characterized in that the monitoring method includes：
Detect the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system；
It tables look-up and obtains the maximum frequency values Fr of preset compressor at this temperature；
Obtain the real time execution frequency Fr1 and real time exhaust gas temperature Tp of compressor；
The real time execution frequency Fr1 and real time exhaust gas temperature Tp are protected with the maximum frequency values Fr and preset temperature respectively
Shield threshold value Tmax is compared；
As Fr1 ＜ Fr-N and Tp ＞ Tmax, judge that refrigerant may leak；Wherein N be it is preset be not less than 3 constant；
If Fr1 >=Fr-N, the running frequency of compressor is reduced.
2. the monitoring method of air-conditioning system coolant leakage as described in claim 1, which is characterized in that judging that refrigerant may send out
After raw leakage, the monitoring method further includes：
It controls air-conditioning system and runs a preset time T according to the preset parameter of setting；The preset parameter includes the fortune of compressor
The rotating speed Pw of line frequency Fr2, the rotating speed Pn of indoor fan and outdoor fan；
Obtain the current value I1 and real time exhaust gas temperature Tp1 of compressor；
By the current value I1 of the compressor and real time exhaust gas temperature Tp1 respectively with the minimum current under air-conditioning system standard condition
Value I and maximum temperature values Tpm are compared；
If I1 ＜ I and Tp1 ＞ Tpm, judge to determine that the refrigerant of air-conditioning system leaks.
3. the monitoring method of air-conditioning system coolant leakage as claimed in claim 2, which is characterized in that judging to determine air-conditioning system
After the refrigerant of system leaks, the monitoring method further includes：
Coolant leakage alarm signal is generated, and exports the alarm signal.
4. the monitoring method of air-conditioning system coolant leakage as claimed in claim 2, which is characterized in that described by the compressor
Current value I1 and real time exhaust gas temperature Tp1 respectively with the minimum current value I and maximum temperature values under air-conditioning system standard condition
The step of Tpm is compared be specially；
Table look-up the minimum current value I and maximum temperature values Tpm for obtaining air-conditioning system under the standard condition of current operation mode, institute
It includes refrigeration mode, heating mode and dehumidification mode to state operating mode；
By the current value I1 of the compressor and real time exhaust gas temperature Tp1 respectively with the minimum current under air-conditioning system standard condition
Value I and maximum temperature values Tpm are compared.
5. a kind of monitoring device of air-conditioning system coolant leakage, which is characterized in that the monitoring device includes：
Outdoor temperature acquiring unit, for detecting the outdoor environment temperature Tw residing for outdoor unit of air-conditioning system；
Maximum frequency acquiring unit, for the maximum frequency values Fr for obtaining preset compressor at this temperature that tables look-up；
First parameter acquiring unit, the real time execution frequency Fr1 for obtaining compressor and real time exhaust gas temperature Tp；
First comparing unit, for by the real time execution frequency Fr1 and real time exhaust gas temperature Tp respectively with the maximum frequency
Value Fr and preset temperature protection threshold value Tmax are compared；
Pre- judging unit, for as Fr1 ＜ Fr-N and Tp ＞ Tmax, judging that refrigerant may leak；Wherein N is preset
Constant not less than 3；
Second regulation and control unit, for as Fr1 >=Fr-N, reducing the running frequency of compressor.
6. the monitoring device of air-conditioning system coolant leakage as claimed in claim 5, which is characterized in that the monitoring device is also wrapped
It includes：
First regulation and control unit runs a preset time T for controlling air-conditioning system according to the preset parameter of setting；The fixed ginseng
Number includes the rotating speed Pw of the running frequency Fr2 of compressor, the rotating speed Pn of indoor fan and outdoor fan；
Second parameter acquiring unit, the current value I1 for obtaining compressor and real time exhaust gas temperature Tp1；
Second comparing unit, for by the current value I1 of the compressor and real time exhaust gas temperature Tp1 respectively with air-conditioning system mark
Minimum current value I and maximum temperature values Tpm under quasi- operating mode are compared；
Judge confirmation unit, if being used for I1 ＜ I and Tp1 ＞ Tpm, judges to determine that the refrigerant of air-conditioning system leaks.
7. the monitoring device of air-conditioning system coolant leakage as claimed in claim 6, which is characterized in that the monitoring device is also wrapped
It includes：
Alarm unit, for generating coolant leakage alarm signal after judging to determine that leakage occurs for the refrigerant of air-conditioning system, and
Export the alarm signal.
8. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes such as claim 5-7 any one of them air-conditionings
The monitoring device of system coolant leakage.
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| CN201610020852.6A CN105605739B (en) | 2016-01-12 | 2016-01-12 | The monitoring method and device of air-conditioning system and its coolant leakage |
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| CN201610020852.6A CN105605739B (en) | 2016-01-12 | 2016-01-12 | The monitoring method and device of air-conditioning system and its coolant leakage |
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