CN103969280A - Method for detecting refrigerant abnormity and air conditioner - Google Patents
Method for detecting refrigerant abnormity and air conditioner Download PDFInfo
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- CN103969280A CN103969280A CN201310042073.2A CN201310042073A CN103969280A CN 103969280 A CN103969280 A CN 103969280A CN 201310042073 A CN201310042073 A CN 201310042073A CN 103969280 A CN103969280 A CN 103969280A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000002159 abnormal effect Effects 0.000 claims abstract description 34
- 238000004378 air conditioning Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000000704 physical effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a method for detecting refrigerant abnormity and an air conditioner, wherein the method comprises the following steps: after the air conditioner is stopped, measuring the duration t of the stop operation of the air conditioner; when t is more than or equal to the preset time t0Respectively detecting the pressure P and the ambient temperature T of the refrigerant of the air conditioning system; calculating the condensation temperature T of the corresponding refrigerant according to the pressure PpAnd determining TpWhether the difference value with the T is within a preset range T or not0If not, the refrigerant is abnormal. The method for detecting the refrigerant abnormity provided by the invention can detect whether the refrigerant of the unit is abnormal or not through the unit, does not need to be manually judged, reduces the situations of wrong refrigerant adding in engineering installation, debugging and after-sale maintenance, prevents the large energy consumption or the damage of unit components caused by the abnormal refrigerant operation, and improves the reliability of unit engineering use.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of abnormal method of cold-producing medium and air conditioner of detecting.
Background technology
General air conditioner comprises compressor, outdoor heat converter, restriction device and indoor heat converter, and they connect to form refrigerant-cycle systems by pipeline, thereby the cold-producing medium of air conditioner circulates and freezes or heat indoor in refrigerant-cycle systems.
When air conditioner need to be added cold-producing medium or heavily record cryogen because of maintenance, maintenance, displacement etc., the refrigerant quality that after-sales service personnel add system can not 100% be guaranteed, sometimes can exist and add false cold-producing medium, the cold-producing medium that reclaims inferior, add the situations such as wrong cold-producing medium, also exist system installation process to vacuumize and do not drain only to cause system the inside to be mixed with the situations such as air and water vapor.Above situation all can cause system operation exception, even damages system components and parts.
At present, generally artificially according to air conditioner operational factor, to go to judge whether the refrigerant quality in system has problem, but be not that each is installed after sale, debugging, maintenance personal have the abnormal technical capability of judgement cold-producing medium, make installation, maintenance after sale add wrong cold-producing medium, add false cold-producing medium, when system is installed, vacuumizing the situation such as unclean cannot be effectively controlled.
Summary of the invention
For above-mentioned prior art present situation, technical matters to be solved by this invention is, provides a kind of and detects the abnormal method of cold-producing medium by air conditioner self, causes that energy consumption is bigger than normal or damage the problem of unit components and parts to avoid using abnormal cold-producing medium.
Another technical matters to be solved by this invention is, a kind of air conditioner is provided, and whether it can detect cold-producing medium automatically abnormal, causes that energy consumption is bigger than normal or damage the problem of unit components and parts to avoid using abnormal cold-producing medium.
In order to solve the problems of the technologies described above, a kind of abnormal method of cold-producing medium that detects provided by the present invention, comprises the steps:
After air conditioner is shut down, measure air conditioner t perdurability out of service;
When t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium;
According to described pressure P, calculate the condensing temperature T of corresponding cold-producing medium
p, and judge T
pand whether the difference between described T is at preset range T
0within, if not, cold-producing medium is abnormal.
Therein in an embodiment, 6h≤t
0≤ 12h.
In an embodiment, the step of the pressure P of described detection air-conditioning system cold-producing medium comprises therein
Detect respectively the refrigerant pressure P of compressor outlet side
grefrigerant pressure P with entrance side
d;
Compare P
gand P
dsize, getting less value is described P.
In an embodiment, the step of described testing environment temperature T comprises therein
Detect respectively the environment temperature T of the outer machine of air conditioner
wenvironment temperature T with machine in each
n1, T
n1..., T
nn;
Compare T
wand T
n1, T
n1..., T
nnsize, getting less value is described T.
Therein in an embodiment ,-2 ℃≤T
0≤ 2 ℃.
In an embodiment, described method also comprises the steps therein
When cold-producing medium is abnormal, send alerting signal.
In an embodiment, stating alerting signal is failure code therein.
The another kind of abnormal method of cold-producing medium that detects provided by the present invention, comprises the steps:
After air conditioner is shut down, measure air conditioner t perdurability out of service;
When t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium;
According to described environment temperature T, calculate the pressure P of corresponding air-conditioning system cold-producing medium
t, and judge P
tand whether the difference between described P is at preset range P
0within, if not, cold-producing medium is abnormal.
Therein in an embodiment, 0.03 ℃≤P
0≤ 0.08 ℃.
A kind of air conditioner provided by the present invention, comprise compressor, four-way valve, outdoor heat exchanger, one or more indoor heat exchangers, restriction device and control device, on the outlet side of described compressor and the pipeline of entrance side, be separately installed with high pressure sensor and low pressure sensor, the return air inlet place of described outdoor heat exchanger is provided with outdoor environment temperature-sensitive bag, described in each, the return air inlet place of indoor heat exchanger is respectively provided with indoor environment temperature-sensitive bag, described high pressure sensor, described low pressure sensor, described in described outdoor environment temperature-sensitive bag and described indoor environment temperature-sensitive Bao Junyu, control device is electrically connected to, described control device comprises:
Stop time, measurement module, after shutting down at air conditioner, measured air conditioner t perdurability out of service;
Refrigerant pressure detection module, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor and/or described low pressure sensor;
Environment temperature detection module, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag and/or described indoor environment temperature-sensitive bag;
Computing module, for calculating the condensing temperature T of corresponding cold-producing medium according to described pressure P
p, and judge T
pand whether the difference between T is at preset range T
0within;
Control module, for working as T
pand the difference between T is not at preset range T
0within time send alerting signal.
Another kind of air conditioner provided by the present invention, comprise compressor 110, four-way valve 120, outdoor heat exchanger 130, restriction device 140, a plurality of indoor heat exchangers 151, 152, 153 and control device, on the outlet side of described compressor 110 and the pipeline of entrance side, be separately installed with high pressure sensor 160 and low pressure sensor 170, the return air inlet place of described outdoor heat exchanger 130 is provided with outdoor environment temperature-sensitive bag 180, described in each, indoor heat exchanger 151, 152, 153 return air inlet place is respectively provided with indoor environment temperature-sensitive bag, described high pressure sensor 160, described low pressure sensor 170, described outdoor environment temperature-sensitive bag 180 and described indoor environment temperature-sensitive bag 191, 192, 193 are all electrically connected to described control device, it is characterized in that, described control device comprises:
Stop time, measurement module, after shutting down at air conditioner, measured air conditioner t perdurability out of service;
Refrigerant pressure detection module, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor 160 and/or described low pressure sensor 170;
Environment temperature detection module, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag 180 and/or described indoor environment temperature-sensitive bag 191,192,193;
Computing module, for calculating the pressure P of corresponding air-conditioning system cold-producing medium according to described environment temperature T
t, and judge P
tand whether the difference between P is at preset range P
0within;
Control module, for working as P
tand the difference between P is not at preset range P
0within time send alerting signal.
The abnormal square ratio juris of detection cold-producing medium provided by the present invention is as follows:
After air conditioner compressor emergency shutdown a period of time; the temperature fundamental sum environment temperature of unit and unit inner refrigerant is consistent; the temperature of cold-producing medium (or pressure of corresponding cold-producing medium) and environment temperature (or pressure of corresponding cold-producing medium) are compared; when both can just can judge that physical properties is consistent error range is identical; refrigerant quality no problem, on the contrary just can judge that refrigerant quality has problem.
Compared with prior art, whether the abnormal method of detection cold-producing medium provided by the present invention can detect unit cold-producing medium by unit self abnormal, without people, for going, judge, reduced the situation that project installation, debugging and after-sales service add wrong cold-producing medium, prevent from causing that energy consumption is bigger than normal or damaging unit components and parts because of the operation of serviceability temperature cold-producing medium, improve unit engineering dependability.
Accompanying drawing explanation
Fig. 1 is the system diagram of the air conditioner in one of them embodiment of the present invention;
Fig. 2 is the module map of the control device of the air conditioner in Fig. 1.
Embodiment
Below with reference to accompanying drawing, also the present invention is described in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in following embodiment and embodiment can combine mutually.
In one of them embodiment of the present invention, provide a kind of abnormal method of cold-producing medium that detects, comprise the steps:
Step 1, air conditioner are measured air conditioner t perdurability out of service after shutting down.
Step 2, when t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium.T>=preset time t
0object be to guarantee that the temperature fundamental sum environment temperature of unit and unit inner refrigerant is consistent, preferably, 6h≤t
0≤ 12h.
Step 3, according to described pressure P, calculate the condensing temperature T of corresponding cold-producing medium
p, and judge T
pand whether the difference between T is at preset range T
0within, if not, cold-producing medium is abnormal.Preset range T
0according to the physical property of cold-producing medium, determine, in the present embodiment ,-2 ℃≤T
0≤ 2 ℃.
The abnormal method of detection cold-producing medium provided by the present invention, whether extremely, can detect unit cold-producing medium by unit self, without people, for going, judge, reduced the situation that project installation, debugging and after-sales service add wrong cold-producing medium, prevent from causing that energy consumption is bigger than normal or damaging unit components and parts because using abnormal cold-producing medium operation, improve unit engineering dependability.
Preferably, the step of the pressure P of described detection system cold-producing medium comprises: the refrigerant pressure P that detects respectively compressor outlet side
grefrigerant pressure P with entrance side
d; Compare P
gand P
dsize, getting less value is described P.
Preferably, the step of described testing environment temperature T comprises: the environment temperature T that detects respectively the outer machine of air conditioner
wenvironment temperature T with machine in each
n1, T
n1..., T
nn; Compare T
wand T
n1, T
n1..., T
nnsize, getting less value is described T.
Because indoor and outdoors environment temperature exists the temperature difference, cold-producing medium can slowly move and be condensed into two-phase state to low temperature side, and the local temperature that finally the corresponding condensing temperature of pressure of cold-producing medium is minimum with unit environment temperature is consistent.
Preferably, the abnormal method of described detection cold-producing medium also comprises the steps: when cold-producing medium is abnormal, generates alerting signal.Further, described alerting signal is failure code.Realize like this automatic alarm.
In another embodiment of the present invention, provide the another kind of abnormal method of cold-producing medium that detects, comprise the steps:
Step 1, air conditioner are measured air conditioner t perdurability out of service after shutting down.
Step 2, when t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium.
Step 3, according to described environment temperature T, calculate the pressure P of corresponding air-conditioning system cold-producing medium
t, and judge P
tand whether the difference between P is at preset range P
0within, if not, cold-producing medium is abnormal.
The present embodiment is different from above-described embodiment, and the method for the present embodiment is to judge that by the force value inside and outside system whether cold-producing medium is abnormal.Preset range P
0according to the physical property of cold-producing medium, determine, in the present embodiment, 0.03 ℃≤P
0≤ 0.08 ℃.
In another embodiment of the present invention, a kind of air conditioner is provided, as shown in Figure 1, air conditioner comprises compressor 110, four-way valve 120, outdoor heat exchanger 130, a plurality of indoor heat exchangers 151, 152, 153, restriction device 140 and control device, on the outlet side of described compressor 110 and the pipeline of entrance side, be separately installed with high pressure sensor 160 and low pressure sensor 170, the return air inlet place of described outdoor heat exchanger 130 is provided with outdoor environment temperature-sensitive bag 180, described in each, indoor heat exchanger 151, 152, 153 return air inlet place is separately installed with indoor environment temperature-sensitive bag 191, 192, 193, described high pressure sensor 160, described low pressure sensor 170, described outdoor environment temperature-sensitive bag 180 and described indoor environment temperature-sensitive bag 191, 192, 193 are all electrically connected to described control device.
As shown in Figure 2, described control device comprises:
Stop time, measurement module 210, after shutting down at air conditioner, measured air conditioner t perdurability out of service.
Refrigerant pressure detection module 220, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor 160
gpressure P with described low pressure sensor 170
d, and compare P
gand P
dsize, getting less value is P.
Environment temperature detection module 230, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag 180
wenvironment temperature T with described indoor environment temperature-sensitive bag 191,192,193
n1, T
n2, T
n3, compare T
wand T
n1, T
n1, T
n3size, getting less value is T.
Computing module 240, for calculating the condensing temperature T of corresponding cold-producing medium according to described pressure P
p, and judge T
pand whether the difference between T is at preset range T
0within.Preset range T
0according to the physical property of cold-producing medium, determine, in the present embodiment ,-2 ℃≤T
0≤ 2 ℃.
Control module 250, for working as T
pand the difference between T is not at preset range T
0within time send alerting signal.Alerting signal in the present embodiment is failure code.
Whether air conditioner provided by the present invention can detect unit cold-producing medium by unit self abnormal, without people, for going, judge, reduced the situation that project installation, debugging and after-sales service add wrong cold-producing medium, prevent from causing that energy consumption is bigger than normal or damaging unit components and parts because using abnormal cold-producing medium operation, improve unit engineering dependability.And, all utilize the original components and parts of air conditioner to realize, be conducive to cost-saving.
In another embodiment of the present invention, provide another kind of air conditioner, the air conditioner in the present embodiment is different from the air conditioner in above-described embodiment: described control device comprises:
Stop time, measurement module, after shutting down at air conditioner, measured air conditioner t perdurability out of service.
Refrigerant pressure detection module, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor 160
gpressure P with described low pressure sensor 170
d, and compare P
gand P
dsize, getting less value is P.
Environment temperature detection module, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag 180
wenvironment temperature T with described indoor environment temperature-sensitive bag 191,192,193
n1, T
n2, T
n3, compare T
wand T
n1, T
n1, T
n3size, getting less value is T.
Computing module, for calculating the pressure P of corresponding air-conditioning system cold-producing medium according to described environment temperature T
t, and judge P
tand whether the difference between P is at preset range P
0within.Preset range P
0according to the physical property of cold-producing medium, determine, in the present embodiment, 0.03 ℃≤P
0≤ 0.08 ℃.
Control module, for working as P
tand the difference between P is not at preset range P
0within time send alerting signal.Alerting signal in the present embodiment is failure code.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (11)
1. detect the abnormal method of cold-producing medium, it is characterized in that, comprise the steps:
After air conditioner is shut down, measure air conditioner t perdurability out of service;
When t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium;
According to described pressure P, calculate the condensing temperature T of corresponding cold-producing medium
p, and judge T
pand whether the difference between described T is at preset range T
0within, if not, cold-producing medium is abnormal.
2. method according to claim 1, is characterized in that, 6h≤t
0≤ 12h.
3. method according to claim 1, is characterized in that, the step of the pressure P of described detection air-conditioning system cold-producing medium comprises
Detect respectively the refrigerant pressure P of compressor outlet side
grefrigerant pressure P with entrance side
d;
Compare P
gand P
dsize, getting less value is described P.
4. method according to claim 1, is characterized in that, the step of described testing environment temperature T comprises
Detect respectively the environment temperature T of the outer machine of air conditioner
wenvironment temperature T with machine in each
n1, T
n1..., T
nn;
Compare T
wand T
n1, T
n1..., T
nnsize, getting less value is described T.
5. method according to claim 1, is characterized in that ,-2 ℃≤T
0≤ 2 ℃.
6. according to the method described in any one in claim 1 to 5, it is characterized in that, also comprise the steps
When cold-producing medium is abnormal, send alerting signal.
7. method according to claim 6, is characterized in that, described alerting signal is failure code.
8. detect the abnormal method of cold-producing medium, it is characterized in that, comprise the steps:
After air conditioner is shut down, measure air conditioner t perdurability out of service;
When t>=preset time t
0time, detect respectively pressure P and the environment temperature T of air-conditioning system cold-producing medium;
According to described environment temperature T, calculate the pressure P of corresponding air-conditioning system cold-producing medium
t, and judge P
tand whether the difference between described P is at preset range P
0within, if not, cold-producing medium is abnormal.
9. method according to claim 8, is characterized in that, 0.03 ℃≤P
0≤ 0.08 ℃.
10. an air conditioner, comprise compressor, four-way valve, outdoor heat exchanger, one or more indoor heat exchangers, restriction device and control device, on the outlet side of described compressor and the pipeline of entrance side, be separately installed with high pressure sensor and low pressure sensor, the return air inlet place of described outdoor heat exchanger is provided with outdoor environment temperature-sensitive bag, described in each, the return air inlet place of indoor heat exchanger is respectively provided with indoor environment temperature-sensitive bag, described high pressure sensor, described low pressure sensor, described in described outdoor environment temperature-sensitive bag and described indoor environment temperature-sensitive Bao Junyu, control device is electrically connected to, it is characterized in that, described control device comprises:
Stop time, measurement module, after shutting down at air conditioner, measured air conditioner t perdurability out of service;
Refrigerant pressure detection module, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor and/or described low pressure sensor;
Environment temperature detection module, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag and/or described indoor environment temperature-sensitive bag;
Computing module, for calculating the condensing temperature T of corresponding cold-producing medium according to described pressure P
p, and judge T
pand whether the difference between T is at preset range T
0within;
Control module, for working as T
pand the difference between T is not at preset range T
0within time send alerting signal.
11. 1 kinds of air conditioners, comprise compressor, four-way valve, outdoor heat exchanger, one or more indoor heat exchangers, restriction device and control device, on the outlet side of described compressor and the pipeline of entrance side, be separately installed with high pressure sensor and low pressure sensor, the return air inlet place of described outdoor heat exchanger is provided with outdoor environment temperature-sensitive bag, described in each, the return air inlet place of indoor heat exchanger is respectively provided with indoor environment temperature-sensitive bag, described high pressure sensor, described low pressure sensor, described in described outdoor environment temperature-sensitive bag and described indoor environment temperature-sensitive Bao Junyu, control device is electrically connected to, it is characterized in that, described control device comprises:
Stop time, measurement module, after shutting down at air conditioner, measured air conditioner t perdurability out of service;
Refrigerant pressure detection module, for working as t>=preset time t
0time gather the pressure P of described high pressure sensor and/or described low pressure sensor;
Environment temperature detection module, for working as t>=preset time t
0time gather the environment temperature T of described outdoor environment temperature-sensitive bag and/or described indoor environment temperature-sensitive bag;
Computing module, for calculating the pressure P of corresponding air-conditioning system cold-producing medium according to described environment temperature T
t, and judge P
tand whether the difference between P is at preset range P
0within;
Control module, for working as P
tand the difference between P is not at preset range P
0within time send alerting signal.
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|---|---|---|---|
| CN201310042073.2A CN103969280B (en) | 2013-01-31 | 2013-01-31 | Method for detecting refrigerant abnormity and air conditioner |
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|---|---|---|---|
| CN201310042073.2A CN103969280B (en) | 2013-01-31 | 2013-01-31 | Method for detecting refrigerant abnormity and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN103969280A true CN103969280A (en) | 2014-08-06 |
| CN103969280B CN103969280B (en) | 2016-05-04 |
Family
ID=51239039
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| CN104896894A (en) * | 2015-06-10 | 2015-09-09 | 张家港市双灵制冷设备有限公司 | Film mimeograph drying device and drying method thereof |
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| CN107421180A (en) * | 2017-07-27 | 2017-12-01 | 奥克斯空调股份有限公司 | A kind of management-control method of the vacuum of production line balance air-conditioning |
| CN107655165A (en) * | 2017-09-07 | 2018-02-02 | 珠海格力电器股份有限公司 | Heat pump unit control method and device |
| CN108548273A (en) * | 2018-04-23 | 2018-09-18 | 珠海晖达科技有限公司 | A kind of air-conditioning fault detection method and device |
| CN109282425A (en) * | 2018-09-29 | 2019-01-29 | 珠海格力电器股份有限公司 | Air conditioning system and self-detection method for pressure abnormity thereof |
| CN115978756A (en) * | 2022-12-22 | 2023-04-18 | 宁波奥克斯电气股份有限公司 | Control method for self-repairing of multi-split air conditioner sensor and readable storage medium |
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