CN103388883B - The decision method of refrigrant leakage and transducer air conditioning in transducer air conditioning - Google Patents
The decision method of refrigrant leakage and transducer air conditioning in transducer air conditioning Download PDFInfo
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- CN103388883B CN103388883B CN201310325935.2A CN201310325935A CN103388883B CN 103388883 B CN103388883 B CN 103388883B CN 201310325935 A CN201310325935 A CN 201310325935A CN 103388883 B CN103388883 B CN 103388883B
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Abstract
The present invention is applicable to household electrical appliance technical field, provides the decision method of refrigrant leakage in a kind of transducer air conditioning, and described method comprises as follows: the compressor coiler temperature T in operation cup obtaining transducer air conditioning; Obtain indoor set coil temperature T
1with indoor temperature T
c1; Judge T and T
1whether the absolute value of difference is less than the first temperature threshold d
1and T
c1with T
1the absolute value of difference is less than d
2, when being judged as YES, transducer air conditioning is modulated to minimum wind gear from the highest wind gear; The second setting-up time t is run at minimum wind gear
2; Obtain indoor set coil temperature T
2with indoor temperature T
c2; At T and T
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating.Technical scheme provided by the invention has the low advantage of False Rate.
Description
Technical field
The invention belongs to field of household appliances, particularly relate to decision method and the transducer air conditioning of refrigrant leakage in a kind of transducer air conditioning.
Background technology
Existing room air conditioner unit, leaks in a large number for cold-producing medium and generally takes the following two kinds method: one, on frequency-changeable compressor muffler, add low tension switch, when pressure is lower than setting value, reports low-voltage variation, stops the operation of compressor.Two, there is no special safeguard measure, rely on the protection of compressor top protector.
Above-mentioned control method one, because outdoor condition range is-15 DEG C ~ 50 DEG C, therefore pressure of inspiration(Pi) when not considering that unit defrosts, the pressure of inspiration(Pi) R410A scope of compressor is 1.6bar ~ 10.8bar, in order to avoid low tension switch misoperation, the setting value of action is generally about 0.8bar.Because working value arranges on the low side, could action only leak the cold-producing medium of more than 75% at unit after, therefore 75% can not play a protective role is less than for refrigrant leakage.Control method two, after cold-producing medium leaks in a large number, the ability of refrigerant cooling compressor reduces greatly, because top protector is external, the cavity temperature of compressor can not be reflected really, before compressor top protection, compressor chamber temperature is very high, compressor greatly may demagnetize, particularly rare earth compressor runs into this situation and more easily demagnetizes, and top protection cancelled by the compressor of existing less than 3 and 3, only rely on delivery temperature protection, when but leakage of refrigerant exceedes a certain amount of, show that the delivery temperature on exhaust sensor is in fact not high, now exhaust protection just loses effect, the effect of protection cannot be reached.
Whether existing most of producer utilizes indoor coil pipe in cooling mode whether higher than setting coil temperature, carry out decision-making system refrigerant and reveal.There is following defect in the method: when indoor temperature is very low and indoor coil pipe sensor temperature occur under when offseting, will indoor coil pipe be caused to be in setting coil temperature lower than secondary refrigerant leakage all the time, thus cause shielding failure, namely cause erroneous judgement.
In addition, whether Some Enterprises utilizes the difference of indoor coil pipe and indoor environment temperature to carry out decision-making system refrigerant to reveal.There is following defect in the method: when hot and humid situation appears in indoor environment, freeze maximum windscreen time, indoor coil pipe and indoor temperature difference less, easily occur that the difference of indoor coil pipe and indoor environment temperature is lower than setting the temperature difference, thus just likely cause erroneous judgement.
Summary of the invention
The object of the embodiment of the present invention is the decision method providing refrigrant leakage in a kind of transducer air conditioning, is intended to solve the problem that prior art easily causes erroneous judgement.
First aspect, provides the decision method of refrigrant leakage in a kind of transducer air conditioning, and described method comprises as follows:
Obtain compressor coiler temperature T in operation cup of transducer air conditioning;
To run and compressor operating frequency is greater than the first setpoint frequency f at the highest windscreen
1after, at operation first setting-up time t
1, obtain indoor set coil temperature T
1with indoor temperature T
c1;
Judge T and T
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
At T and T
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
The second setting-up time t is run at minimum wind gear
2; Obtain indoor set coil temperature T
2with indoor temperature T
c2;
Judge T and T
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
At T and T
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating;
Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C ≦≤d
1≦≤4.5 DEG C; 7.5 DEG C ≦≤d
2≦≤4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C.
In conjunction with the technical scheme of first aspect, in the first possibility of first aspect,
Described first temperature threshold d
1with described 3rd temperature threshold d
3value equal;
Described second temperature threshold d
2with described 4th temperature threshold d
4value equal.
Second aspect, provides a kind of transducer air conditioning, and described transducer air conditioning comprises:
Acquiring unit, for obtaining compressor coiler temperature T in operation cup of transducer air conditioning;
Running unit, for run at the highest windscreen and compressor operating frequency is greater than the first setpoint frequency f
1after, at operation first setting-up time t
1;
Acquiring unit, also for obtaining indoor set coil temperature T
1with indoor temperature T
c1;
First judging unit, for judging T and T
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
Adjustment unit, for judging T and T at described first judging unit
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
Described running unit, also for running the second setting-up time t at minimum wind gear
2;
Described acquiring unit, also for obtaining indoor set coil temperature T
2with indoor temperature T
c2;
Second judging unit, for judging T and T
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
Stop element, judges T and T for described second judging unit
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating;
Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C ≦≤d
1≦≤4.5 DEG C; 7.5 DEG C ≦≤d
2≦≤4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C.
In conjunction with the technical scheme of second aspect, in the first possibility of the second method,
Described first temperature threshold d
1with described 3rd temperature threshold d
3value equal;
Described second temperature threshold d
2with described 4th temperature threshold d
4value equal.
Compared with prior art, beneficial effect is the embodiment of the present invention: technical scheme of the present invention has the advantage reducing erroneous judgement.
Accompanying drawing explanation
Fig. 1 is the flow chart of the decision method of refrigrant leakage in a kind of transducer air conditioning of providing of the embodiment of the present invention;
Fig. 2 is the structure chart of a kind of transducer air conditioning that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The specific embodiment of the invention provides the decision method of refrigrant leakage in a kind of transducer air conditioning, and the method is completed by transducer air conditioning, and the method as shown in Figure 1, comprises the steps:
101, compressor coiler temperature T in operation cup of transducer air conditioning is obtained;
102, to run and compressor operating frequency is greater than the first setpoint frequency f at the highest windscreen
1after, at operation first setting-up time t
1, obtain indoor set coil temperature T
1with indoor temperature T
c1;
103, T and T is judged
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
104, at T and T
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
105, run the second setting-up time t at minimum wind gear
2; Obtain indoor set coil temperature T
2with indoor temperature T
c2;
106, T and T is judged
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
107, at T and T
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating.
Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C ≦≤d
1≦≤4.5 DEG C; 7.5 DEG C ≦≤d
2≦≤4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C.
Technical scheme provided by the invention adopts the difference of two gears to judge, the probability of erroneous judgement can be reduced like this, be specifically as follows: when when high wind gear, due to when this gear works, such as when high temperature (general temperature is more than 29 DEG C) and high humidity (general humidity is more than 75%), coil temperature affects higher than the temperature value under normal humidity by high humility factor, judge iff using the difference of high windscreen, just easily there is the erroneous judgement of refrigrant leakage, and after increasing the difference judgement of minimum windscreen, coil temperature just can be avoided to affect produced deviation by high humility factor, because prove by experiment, at low wind gear, it is minimum that coil temperature value affects generation deviation by high humility factor, so it measures the refrigerant amount that more truly can reflect air-conditioning, so it has refrigrant leakage judge little advantage by accident.In addition, the present invention utilizes the relative difference of same indoor coil sensor to judge, avoids drifting about the erroneous judgement caused because of different sensors resistance.In addition, this kind of mode is adopted in both modes, namely under refrigeration or heating mode, all can to judge whether cold-producing medium leaks, so it has advantage applied widely.In addition, the indoor coil pipe that participation judges and indoor environment temperature are always temperature during compressor operating, and therefore temperature is what dynamically update, can accomplish whether dynamic detection system exists the problem of secondary refrigerant leakage.Whether when the present invention can be used for detecting operation of air conditioner, whether indoor and outdoor height pressure valve is opened, can also detect cross valve when heat pump type air conditioner heats and commutate.
Optionally, above-mentioned d
1and d
3value can equal (preferably); Certainly in a practical situation, above-mentioned d
1and d
3value also can be unequal.
Optionally, above-mentioned d
2and d
4value can equal (preferably); Certainly in a practical situation, above-mentioned d
2and d
4value also can be unequal.
The specific embodiment of the invention also provides a kind of transducer air conditioning 200, and this transducer air conditioning 200 as shown in Figure 2, comprising:
Acquiring unit 201, for obtaining compressor coiler temperature T in operation cup of transducer air conditioning;
Running unit 202, for run at the highest windscreen and compressor operating frequency is greater than the first setpoint frequency f
1after, at operation first setting-up time t
1;
Acquiring unit 201, also for obtaining indoor set coil temperature T
1with indoor temperature T
c1;
First judging unit 203, for judging T and T
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
Adjustment unit 204, for judging T and T at the first judging unit 203
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
Running unit 202, also for running the second setting-up time t at minimum wind gear
2;
Acquiring unit 201, also for obtaining indoor set coil temperature T
2with indoor temperature T
c2;
Second judging unit 205, for judging T and T
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
Stop element 206, judges T and T for the second judging unit 205
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating.Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C ≦≤d
1≦≤4.5 DEG C; 7.5 DEG C ≦≤d
2≦≤4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C.
Transducer air conditioning provided by the invention has the low advantage of False Rate.
Optionally, above-mentioned d
1and d
3value can equal (preferably); Certainly in a practical situation, above-mentioned d
1and d
3value also can be unequal.
Optionally, above-mentioned d
2and d
4value can equal (preferably); Certainly in a practical situation, above-mentioned d
2and d
4value also can be unequal.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the decision method of refrigrant leakage in transducer air conditioning, it is characterized in that, described method comprises as follows:
Obtain compressor coiler temperature T in operation cup of transducer air conditioning;
To run and compressor operating frequency is greater than the first setpoint frequency f at the highest windscreen
1after, at operation first setting-up time t
1, obtain indoor set coil temperature T
1with indoor temperature T
c1;
Judge T and T
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
At T and T
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
The second setting-up time t is run at minimum wind gear
2; Obtain indoor set coil temperature T
2with indoor temperature T
c2;
Judge T and T
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
At T and T
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating;
Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C>=d
1>=4.5 DEG C; 7.5 DEG C>=d
2>=4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C;
Described first temperature threshold d
1with described 3rd temperature threshold d
3value equal;
Described second temperature threshold d
2with described 4th temperature threshold d
4value equal.
2. a transducer air conditioning, is characterized in that, described transducer air conditioning comprises:
Acquiring unit, for obtaining compressor coiler temperature T in operation cup of transducer air conditioning;
Running unit, for run at the highest windscreen and compressor operating frequency is greater than the first setpoint frequency f
1after, at operation first setting-up time t
1;
Acquiring unit, also for obtaining indoor set coil temperature T
1with indoor temperature T
c1;
First judging unit, for judging T and T
1whether the absolute value of difference is less than the first temperature threshold d
1, judge T
c1with T
1whether the absolute value of difference is less than the second temperature threshold d
2;
Adjustment unit, for judging T and T at described first judging unit
1the absolute value of difference is less than d
1and T
c1with T
1the absolute value of difference is less than d
2time, transducer air conditioning is modulated to minimum wind gear from the highest wind gear;
Described running unit, also for running the second setting-up time t at minimum wind gear
2;
Described acquiring unit, also for obtaining indoor set coil temperature T
2with indoor temperature T
c2;
Second judging unit, for judging T and T
2whether the absolute value of difference is less than the 3rd temperature threshold d
3, judge T
c2with T
2whether the absolute value of difference is less than the 4th temperature threshold d
4;
Stop element, judges T and T for described second judging unit
2the absolute value of difference is less than d
1and T
c2with T
2the absolute value of difference is less than d
2time, judge the refrigrant leakage of transducer air conditioning, stop compressor operating;
Described transducer air conditioning refrigeration or dehumidification mode under, 7.5 DEG C>=d
1>=4.5 DEG C; 7.5 DEG C>=d
2>=4.5 DEG C;
Described transducer air conditioning in a heating mode, 14.5 DEG C>=d
1>=11.5 DEG C; 14.5 DEG C>=d
2>=11.5 DEG C
The scope of described indoor set coil temperature is :-15 DEG C≤T≤70 DEG C;
Described first temperature threshold d
1with described 3rd temperature threshold d
3value equal;
Described second temperature threshold d
2with described 4th temperature threshold d
4value equal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325935.2A CN103388883B (en) | 2013-07-31 | 2013-07-31 | The decision method of refrigrant leakage and transducer air conditioning in transducer air conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325935.2A CN103388883B (en) | 2013-07-31 | 2013-07-31 | The decision method of refrigrant leakage and transducer air conditioning in transducer air conditioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103388883A CN103388883A (en) | 2013-11-13 |
| CN103388883B true CN103388883B (en) | 2015-12-02 |
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|---|---|---|---|
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