CN109000337A - A kind of leakage of refrigerant guard method - Google Patents
A kind of leakage of refrigerant guard method Download PDFInfo
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- CN109000337A CN109000337A CN201710396443.0A CN201710396443A CN109000337A CN 109000337 A CN109000337 A CN 109000337A CN 201710396443 A CN201710396443 A CN 201710396443A CN 109000337 A CN109000337 A CN 109000337A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004378 air conditioning Methods 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000005057 refrigeration Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims description 26
- 238000013507 mapping Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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Abstract
A kind of leakage of refrigerant guard method, it is characterised in that step is successively are as follows: (1) control and be switched on and run after certain time；(2) judge whether it is refrigeration or heating mode, when for refrigeration or heating mode, be transferred to next step；Otherwise, it keeps operating normally；(3) electric current of room temperature, outdoor temperature and outdoor unit is detected；(4) the characteristic index electric current I of corresponding operating condition is found in preset table according to room temperature and outdoor temperatureRefrigerationOr IHeating；(5) judge, as the electric current I of outdoor unitIt is practicalLess than characteristic index electric current IRefrigeration, alternatively, working as the electric current I of outdoor unitIt is practicalLess than characteristic index electric current IHeating, control air-conditioning system and carry out fault alarm or shutdown；Conversely, keeping operating normally.It has low in cost, high reliablity, and easy realization easy to operate has the characteristics of popularity.
Description
Technical field
The present invention relates to secondary refrigerant leakage detection methods in a kind of air-conditioning system.
Background technique
The air-conditioning system using refrigerant produced at present, since leakproofness is bad or artificial origin etc. causes refrigerant to let out
Dew, causes sealing system to be unable to reach ideal effect, or even cause situations such as burning, exploding.There are scientific and technical personnel constantly to exert thus
Power researches and develops various secondary refrigerant leakages and detects alarm method.
It checks in the Chinese patent that patent publication No. is CN104949266A and discloses and report a kind of air conditioner and air conditioner
Secondary refrigerant leakage detection method, outdoor unit of the air conditioner include compressor and outdoor heat exchanger, secondary refrigerant leakage detection method include with
Lower step: when air conditioner is run with heating mode, compressor start is controlled, and detect the coil temperature of outdoor heat exchanger to obtain
Take initial temperature；After compressor start preset time, the running frequency of compressor and the operating current of air conditioner are obtained, and
Whether the operating current of the running frequency and air conditioner that judge compressor meets preset condition；If meet preset condition, then
The coil temperature of secondary detection outdoor heat exchanger is to obtain multiple detection temperature；Multiple detection temperature are successively carried out with initial temperature
Compare, and judges whether air conditioner occurs secondary refrigerant leakage according to comparison result.As a result, by the coil temperature of outdoor heat exchanger,
The operating current of compressor operating frequency and air conditioner carries out linkage judgement, and secondary refrigerant leakage judges accurate under promotion heating mode
Property.It has a disadvantage in that and needs to detect the multiple parameters such as running frequency of coil temperature, compressor, operating current, and detect and pass
Sensor type is also different, causes detection line arrangement installation difficulty to increase, controls complicated for operationization.
In addition, the Chinese patent that patent publication No. is CN104677550A discloses a kind of leakage of refrigerant of air-conditioning system
Detection method includes the following steps: that S10, the control air-conditioning system are switched on and run the first predetermined time t1；S20, judge institute
Whether the operational mode for stating air-conditioning system is refrigeration or heating mode；S30, detect room temperature and obtain T1, detection interior change
The heat exchanger tube temperature of hot device simultaneously obtains T2, detects compressor current and obtains DL, and Shu T1-T2 Shu and temperature predetermined difference value Tc is carried out
Compare, and the difference Shu DLx-DL Shu of DL and the current upper limit value DLx of compressor be compared with electric current predetermined difference value DLs,
As Shu T1-T2 Shu < Tc and Shu DLx-DL Shu > DLs, controls the air-conditioning system and carry out fault alarm or the control compressor
It shuts down, as Shu T1-T2 Shu >=Tc or Shu DLx-DL Shu≤DLs, controls the air-conditioning system and keep operating normally.It uses detection
Sensor is the reduction of, and is simplified, but in control process, need to detect indoor heat exchanger and the multiple variables of interior compression machine into
Row compares, and causes control from being complicated.
All various our scientific and technical personnel of needs constantly bring forth new ideas, and to obtain, new easy to operate, easy implementation, cost is relatively low
Air-conditioning system secondary refrigerant leakage detection method.
Summary of the invention
The technical problem to be solved by the present invention is to a kind of leakage of refrigerant protection is provided for the above-mentioned state of the art
Method, it has low in cost, high reliablity, and easy realization easy to operate has the characteristics of popularity.
The technical scheme of the invention to solve the technical problem is: a kind of leakage of refrigerant guard method, special
Sign is step successively are as follows:
(1) after control air-conditioning system is switched on and ran for the first predetermined time；
(2) whether the operational mode for judging air-conditioning system is refrigeration or heating mode, when the operational mode of air-conditioning system is
When refrigeration or heating mode, it is transferred to next step；When the operational mode of air-conditioning system is non-brake method or heating mode, control is empty
Adjusting system keeps operating normally；
(3) detection room temperature obtains room temperature parameter T1, detection outdoor temperature obtains outdoor temperature parameter T2 and inspection
The electric current for surveying outdoor unit obtains actual current parameter IIt is practical；
(4) cryogenic conditions of corresponding operating condition are found in preset table according to room temperature parameter T1 and outdoor temperature parameter T2
Under characteristic index electric current IRefrigerationOr characteristic index electric current I under the conditions of the heating of corresponding operating conditionHeating；
(5) judge, under refrigeration mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IRefrigerationWhen,
Alternatively, under heating mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IHeatingWhen, control air-conditioning system
It carries out fault alarm or controls the compressor shutdown of air-conditioning system；Conversely, control air-conditioning system keeps operating normally.
Further, the preset table is in the case where air-conditioning system is filled with critical percentage refrigerant condition, with each operating condition institute
Corresponding outdoor unit characteristic index electric current IRefrigerationOr characteristic index electric current IHeatingMapping relations are established with outdoor temperature, indoor temperature
Tables of data.
Further, outdoor temperature and indoor temperature is that round numbers is made in the preset table.
Further, the detection room temperature obtains room temperature parameter T1, detection outdoor temperature obtains outdoor temperature ginseng
Number T2 round numbers, using the system of rounding up.
It is preferred that the critical percentage refrigerant condition refers to that air-conditioning system is filled with 30~60% refrigerant conditions.
Further preferably, the critical percentage refrigerant condition refers to that air-conditioning system is filled with 50% refrigerant condition.
Further, the fault alarm uses sound-light alarm, and reports fault code.
Finally, first predetermined time is 10~30 minutes.
Compared with the prior art, the advantages of the present invention are as follows: due to only detecting outdoor temperature and indoor temperature and outdoor unit
Operating current, so only needing two class detection sensors, sensor is few, and traditional air conditioner is usually to have electricity
The sensor of stream detection and room temperature detection simplifies structure, reduces into so the arrangement of control system is facilitated to install
This, has popularity meaning, moreover, only comparing a control parameter such as outdoor unit current value, so keeping control operation opposite
It is fairly simple, implementation easy to operate, good reliability.
Detailed description of the invention
Fig. 1 is certain refrigeration system current value table corresponding to corresponding operating condition in the case where filling 100% refrigerant condition；
Fig. 2 is certain refrigeration system current value table corresponding to corresponding operating condition in the case where filling 50% refrigerant condition；
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
The basic control principle of the present patent application technical solution is: when air-conditioning system internal refrigeration storage agent leakage or other originals
Cause, when air-conditioning system inner refrigerant being caused to lack, outer machine consumption power decline is obvious, thus keep outdoor unit curent change larger,
And its decaying has regularity, so the present patent application technology is monitored electric current for this feature, and with former control system
Operating condition current design value under a certain same operating condition is compared, when actual current is less than characteristic index electric current IHeatingOr IRefrigeration
When, illustrate that secondary refrigerant leakage has reached critical percentage or so, needs to carry out stoppage protection, and report malfunction coefficient.
So the corresponding current value under different operating conditions is debugged out according to its use scope and condition for not homologous ray,
And its electric current and indoor and outdoor operating condition are monitored by control system, it is controlled by plug-in, when leakage of refrigerant leads to electric current
Being reduced to influences service performance or in the case where being related to safety, out of service and alarm.
Specific embodiment, as shown in Fig. 1~2, a kind of leakage of refrigerant guard method, step is successively are as follows:
(1) after control air-conditioning system is switched on and ran for the first predetermined time；Usual first predetermined time is 20 minutes, is made
Air-conditioning system the operation is stable；
(2) whether the operational mode for judging air-conditioning system is refrigeration or heating mode, when the operational mode of air-conditioning system is
When refrigeration or heating mode, it is transferred to next step；When the operational mode of air-conditioning system is non-brake method or heating mode, such as heat
Defrosting process does not determine that control air-conditioning system keeps operating normally then；
(3) detection room temperature obtains room temperature parameter T1, detection outdoor temperature obtains outdoor temperature parameter T2 and inspection
The electric current for surveying outdoor unit obtains actual current parameter IIt is practical；In order to facilitate working condition is compared, room temperature and outdoor temperature are to take
Integer, using the system of rounding up；
(4) cryogenic conditions of corresponding operating condition are found in preset table according to room temperature parameter T1 and outdoor temperature parameter T2
Under characteristic index electric current IRefrigerationOr characteristic index electric current I under the conditions of the heating of corresponding operating conditionHeating；
Wherein, preset table is in the case where air-conditioning system is filled with critical percentage refrigerant condition, with each operating condition outdoor temperature
With outdoor unit characteristic index electric current I corresponding to room temperatureRefrigerationOr characteristic index electric current IHeatingAnd outdoor temperature, indoor temperature
The tables of data of mapping relations is established, for the ease of production, outdoor temperature and indoor temperature is that round numbers is made in preset table
's；In general, critical percentage can preferably 30~60%, critical percentage refrigerant condition refers to that air-conditioning system is filled with 50%
Refrigerant condition；So in Fig. 2 table be exactly be filled under critical percentage (50%) refrigerant condition, outdoor temperature and interior
Temperature is with outdoor unit characteristic index electric current IRefrigerationSet up the preset table of mapping relations；
(5) judge, under refrigeration mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IRefrigerationWhen,
Alternatively, under heating mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IHeatingWhen, control air-conditioning system
It carries out fault alarm or controls the compressor shutdown of air-conditioning system, fault alarm uses sound-light alarm, and reports fault code；Instead
It, control air-conditioning system keeps operating normally.
Since the present patent application technical solution only detects the operating current of outdoor temperature and indoor temperature and outdoor unit, so
Two class detection sensors are only needed, sensor is few, and traditional air conditioner is usually to have current detecting and Indoor Temperature
The sensor for spending detection, in addition facilitates the arrangement of control system to install, simplifies structure, reduce costs, have popularity
Meaning, so keeping control operation relatively simple, is easy behaviour moreover, only comparing a control parameter such as outdoor unit current value
Work is implemented, and practice confirmation reliability is also relatively good.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of leakage of refrigerant guard method, it is characterised in that step is successively are as follows:
(1) after control air-conditioning system is switched on and ran for the first predetermined time；
(2) whether the operational mode for judging air-conditioning system is refrigeration or heating mode, when the operational mode of air-conditioning system is refrigeration
Or when heating mode, it is transferred to next step；When the operational mode of air-conditioning system is non-brake method or heating mode, air-conditioning system is controlled
Blanket insurance holds normal operation；
(3) detection room temperature obtains room temperature parameter T1, detection outdoor temperature obtains outdoor temperature parameter T2 and sensing chamber
The electric current of outer machine obtains actual current parameter IIt is practical；
(4) under the cryogenic conditions for finding corresponding operating condition in preset table according to room temperature parameter T1 and outdoor temperature parameter T2
Characteristic index electric current IRefrigerationOr characteristic index electric current I under the conditions of the heating of corresponding operating conditionHeating；
(5) judge, under refrigeration mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IRefrigerationWhen, alternatively,
Under heating mode, as the actual current parameter I of outdoor unitIt is practicalLess than characteristic index electric current IHeatingWhen, control air-conditioning system carries out
Fault alarm or the compressor shutdown for controlling air-conditioning system；Conversely, control air-conditioning system keeps operating normally.
2. leakage of refrigerant guard method according to claim 1, it is characterised in that the preset table is in air-conditioning system
It is filled under critical percentage refrigerant condition, with outdoor unit characteristic index electric current I corresponding to each operating conditionRefrigerationOr feature refers to
Mark electric current IHeatingThe tables of data of mapping relations is established with outdoor temperature, indoor temperature.
3. leakage of refrigerant guard method according to claim 2, it is characterised in that in the preset table outdoor temperature and
Room temperature is that round numbers is made.
4. leakage of refrigerant guard method according to claim 3, it is characterised in that the detection room temperature obtains room
Interior temperature parameter T1, detection outdoor temperature obtain the T2 round numbers of outdoor temperature parameter, using the system of rounding up.
5. leakage of refrigerant guard method described in any one according to claim 1~4, it is characterised in that the critical percentage
Refer to that air-conditioning system is filled with 30~60% refrigerant conditions than refrigerant condition.
6. leakage of refrigerant guard method according to claim 5, it is characterised in that the critical percentage refrigerant item
Part refers to that air-conditioning system is filled with 50% refrigerant condition.
7. leakage of refrigerant guard method according to claim 1, it is characterised in that the fault alarm uses acousto-optic report
It is alert, and report fault code.
8. leakage of refrigerant guard method according to claim 1, it is characterised in that first predetermined time is 10~
30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710396443.0A CN109000337A (en) | 2017-05-31 | 2017-05-31 | A kind of leakage of refrigerant guard method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710396443.0A CN109000337A (en) | 2017-05-31 | 2017-05-31 | A kind of leakage of refrigerant guard method |
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| Publication Number | Publication Date |
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| CN109000337A true CN109000337A (en) | 2018-12-14 |
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| CN201710396443.0A Pending CN109000337A (en) | 2017-05-31 | 2017-05-31 | A kind of leakage of refrigerant guard method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357745A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调器有限总公司 | Air conditioner refrigerant loss detection method and air conditioner |
| CN114234359A (en) * | 2021-11-09 | 2022-03-25 | 海信（广东）空调有限公司 | Air conditioner and refrigerant leakage detection method thereof |
| CN114234360A (en) * | 2021-11-09 | 2022-03-25 | 海信（广东）空调有限公司 | Air conditioner and refrigerant leakage detection method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159291A (en) * | 1995-12-13 | 1997-06-20 | Hitachi Ltd | Operation control device for air conditioner for computer |
| CN1737448A (en) * | 2005-06-20 | 2006-02-22 | 珠海格力电器股份有限公司 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
| CN202598734U (en) * | 2012-05-21 | 2012-12-12 | 徐兴江 | Intelligent enthalpy difference control energy-saving air conditioner |
| CN103363617A (en) * | 2012-04-10 | 2013-10-23 | 珠海格力电器股份有限公司 | Method and device for detecting lack of fluorine in air conditioner and air conditioner |
| CN104677550A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Refrigerant leakage detection method for air conditioning system |
| CN104949266A (en) * | 2015-06-04 | 2015-09-30 | 广东美的制冷设备有限公司 | Air conditioner and refrigerant leakage detection method of air conditioner |
-
2017
- 2017-05-31 CN CN201710396443.0A patent/CN109000337A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159291A (en) * | 1995-12-13 | 1997-06-20 | Hitachi Ltd | Operation control device for air conditioner for computer |
| CN1737448A (en) * | 2005-06-20 | 2006-02-22 | 珠海格力电器股份有限公司 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
| CN103363617A (en) * | 2012-04-10 | 2013-10-23 | 珠海格力电器股份有限公司 | Method and device for detecting lack of fluorine in air conditioner and air conditioner |
| CN202598734U (en) * | 2012-05-21 | 2012-12-12 | 徐兴江 | Intelligent enthalpy difference control energy-saving air conditioner |
| CN104677550A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Refrigerant leakage detection method for air conditioning system |
| CN104949266A (en) * | 2015-06-04 | 2015-09-30 | 广东美的制冷设备有限公司 | Air conditioner and refrigerant leakage detection method of air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357745A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调器有限总公司 | Air conditioner refrigerant loss detection method and air conditioner |
| CN114234359A (en) * | 2021-11-09 | 2022-03-25 | 海信（广东）空调有限公司 | Air conditioner and refrigerant leakage detection method thereof |
| CN114234360A (en) * | 2021-11-09 | 2022-03-25 | 海信（广东）空调有限公司 | Air conditioner and refrigerant leakage detection method thereof |
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Application publication date: 20181214 |
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