CN101509692A - Antifreezing control method of air conditioner evaporator - Google Patents
Antifreezing control method of air conditioner evaporator Download PDFInfo
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- CN101509692A CN101509692A CNA2009100968670A CN200910096867A CN101509692A CN 101509692 A CN101509692 A CN 101509692A CN A2009100968670 A CNA2009100968670 A CN A2009100968670A CN 200910096867 A CN200910096867 A CN 200910096867A CN 101509692 A CN101509692 A CN 101509692A
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Abstract
The invention discloses a method for controlling the anti-freezing of the evaporator of an air conditioner. The method mainly comprises the steps as follows: the temperature of the pipe coil of the evaporator is collected by a singlechip (5); subsequently, according to the collected temperature, corresponding conversion and control to the rotation speed of the motor of an indoor machine, and the starting and stopping of a compressor (1) are carried out. The method for controlling the anti-freezing of the evaporator of the air conditioner can lead the air conditioner work under different environments and improve the performance of the whole machine and the satisfaction degree of the user.
Description
Technical field
The present invention relates to a kind of control method, the antifreeze control method of specifically a kind of air conditioner evaporator.
Background technology
" refrigeration " is one of basic function of air-conditioner, and the principle that realizes refrigeration is: cold-producing medium compresses through compressor of air conditioner, compressor is discharged high temperature, gases at high pressure, the gas of high temperature, high pressure is through outdoor condenser, heat is emitted in be condensed device liquefaction of cold-producing medium, and through the throttling arrangement indoor evaporator of flowing through, cold-producing medium is evaporated vaporization again, absorb heat, to reach the effect that reduces room temperature.But air-conditioning freezes under different environment temperatures, particularly use air conditioner refrigerating (to be installed in machine room below 21 ℃ such as air-conditioning at low temperature, places such as freezer, all need use air conditioner refrigerating throughout the year), this moment, compressor was inhaled, delivery temperature is lower because environment temperature is low, and the evaporator evaporation temperature also reduces, environment temperature is low more, and evaporating temperature is corresponding also low more.When evaporating temperature was lower than below 0 ℃, evaporimeter was will frosting frozen, and will influence the refrigeration performance of air-conditioner this moment, completely lose refrigerating function even, also can damage compressor when serious, tend to cause customer complaint like this, cause unnecessary brand image loss and economic loss.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of can making under the air-conditioning adaptation varying environment to work raising complete machine performance, the antifreeze control method of air conditioner evaporator of raising user satisfaction.
Technical solution of the present invention is, provides a kind of air conditioner evaporator antifreeze control method, and it may further comprise the steps:
1., air-conditioning sets " refrigeration " order after opening, air-conditioning begins to freeze, temperature detecting module begins to detect evaporator coil temperature, and detected temperature transition is become temperature value, single-chip microcomputer real-time sampling evaporator coil temperature value;
2., detect evaporator coil temperature≤-2 ℃ when temperature detecting module, when single-chip microcomputer sampled-2 ℃ of temperature values and continues 2 minutes, single-chip microcomputer cut off compressor output, and compressor is out of service, evaporimeter stops evaporation, and evaporator coil temperature just no longer reduces;
3., compressor out of service after, single-chip microcomputer switches to high speed winds with the inner blower forced motor, high speed winds blows out the cold air in the air-conditioning, exchanges the formation convection current with indoor air, evaporator coil temperature begins slowly to rise;
4., detect evaporator coil temperature 〉=7 ℃ when temperature detecting module, when single-chip microcomputer samples 7 ℃ of temperature values, when perhaps the single-chip microcomputer counting compressor shutdown time was greater than 10 minutes, as long as satisfy one of them condition, single-chip microcomputer is exported conducting with compressor, and compressor just reruns; Simultaneously, single-chip microcomputer also switches to original wind speed with the inner blower motor from high speed winds.
The antifreeze control method of air conditioner evaporator of the present invention compared with prior art has following remarkable advantage and beneficial effect:
Owing to, and then control compressor and air conditioner wind speed by single-chip microcomputer sampling evaporator coil temperature value.When temperature detecting module detects evaporator coil temperature≤-2 ℃, when single-chip microcomputer sampled-2 ℃ of temperature values and continues 2 minutes, single-chip microcomputer cut off compressor output, and compressor is out of service, and evaporimeter stops evaporation; After compressor was out of service, single-chip microcomputer switched to high speed winds with the inner blower forced motor; When temperature detecting module detects evaporator coil temperature 〉=7 ℃; when single-chip microcomputer samples 7 ℃ of temperature values; when perhaps the single-chip microcomputer counting compressor shutdown time was greater than 10 minutes; as long as satisfy one of them condition; single-chip microcomputer is exported conducting with compressor; compressor just reruns, and simultaneously, single-chip microcomputer also switches to original wind speed with the inner blower motor from high speed winds.After compressor quits work, evaporimeter has stopped evaporation basically, evaporator coil temperature just also no longer reduces basically, and the inner blower motor is forced to switch to high speed winds, high speed winds blows out the cold air in the air conditioner, thereby improves the temperature of evaporator coil, makes air-conditioning adapt to the work down of different environment, improve the complete machine performance, also improved user satisfaction.
Description of drawings
Fig. 1 is the electrical block diagram of the antifreeze control method of air conditioner evaporator of the present invention.
Fig. 2 is the operation principle structural representation of the antifreeze control method of air conditioner evaporator of the present invention.
As shown in the figure: 1, compressor, 2, condenser, 3, evaporimeter, 4, near the temperature detecting module the evaporimeter, 5, single-chip microcomputer, 6, rp-drive, 7, relay, 8, indoor low velocity wind, 9, indoor high-speed wind.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the antifreeze control method of air conditioner evaporator of the present invention is described in further detail.
See also shown in Figure 1, the basic principle of air conditioner refrigerating is: cold-producing medium is through compressor of air conditioner 1 compression, compressor 1 is discharged high temperature, gases at high pressure, high temperature, gases at high pressure are through outdoor condenser 2, cold-producing medium is condensed and emits heat after device 2 liquefaction, the liquid after the liquefaction again through capillary flow through indoor evaporator 3, cold-producing medium is by evaporimeter 3 carburation by evaporations, absorb heat, to reach the reduction room temperature.
See also shown in Figure 2ly, air-conditioning comprises near temperature detecting module 4, indoor fan motor and the compressor control module the evaporator coil.Near the described evaporator coil temperature detecting module 4 is used for detecting evaporimeter 3 coil temperatures, is made up of temperature sensor and reference resistance.What reference resistance adopted is the metalfilmresistor of 5.1K Ω ± 1% precision, and what temperature sensor adopted is the thermistor (the B value of temperature sensor and the resistance of reference resistance can choose) of B value for 3470K ± 1%, R value (25 ℃)=5K Ω ± 1%.Described indoor fan motor and compressor control module comprise single-chip microcomputer 5, rp-drive circuit 6 and relay 7, and the single-chip microcomputer 5 in this specific embodiment is auspicious Sa 37546, and rp-drive 6 is 2003.
The concrete course of work of the control method that air conditioner evaporator of the present invention is antifreeze is:
1., set " refrigeration " order after air-conditioning is opened, air-conditioning just begins refrigeration, near the evaporator coil temperature detecting module 4 begins to detect the temperature of evaporimeter 3 coil pipes, the temperature that detects draws current evaporimeter 3 coil temperature values, single-chip microcomputer 5 real-time sampling evaporimeters 3 coil temperature values again after the AD conversion process.
2., near the temperature detecting module evaporimeter 4 detects evaporimeter 3 coil temperatures≤-2 ℃, when single-chip microcomputer 5 samples-2 ℃ of temperature values and continues 2 minutes, single-chip microcomputer 5 is used to control that pin of compressor 1 with regard to the low electricity frequency of output, low electricity frequently again through the high electricity of rp-drive 6 conversion back outputs frequently, the high electricity of input input that relay 7 links to each other with rp-drive 6 frequently, relay 7 coil blackouts, relay 7 output loops disconnect, compressor 1 outage is out of service, evaporimeter 3 has stopped evaporation basically, and the temperature of evaporimeter 3 coil pipes just no longer reduces basically.
3., compressor 1 out of service after, single-chip microcomputer 5 is used for that pin of low velocity wind 8 in the control room and just exports low electricity frequently, low electricity is exported high electricity frequently frequently again after rp-drive 6 conversions, the high electricity of input input that relay 7 links to each other with rp-drive 6 frequently, relay 7 coil blackouts, relay 7 output loops are disconnected, and low velocity wind 8 in the close chamber; Meanwhile, single-chip microcomputer 5 is used for that pin of high speed winds 9 in the control room and just exports high electricity frequently, high electricity is exported low electricity frequently frequently again after rp-drive 6 conversions, the low electricity of input input that relay 7 links to each other with rp-drive 6 frequently, relay 7 coil electricities, the energising of relay 7 output loops switches to indoor high-speed wind 9.Indoor high-speed wind 9 blows out the cold air in the indoor set, exchanges the formation convection current with indoor air, and evaporimeter 3 coil temperatures begin slowly to rise.
4., near the temperature detecting module evaporimeter 4 detects evaporimeter 3 coil temperatures 〉=7 ℃; when single-chip microcomputer 5 samples 7 ℃ of temperature values; when perhaps 1 downtime of single-chip microcomputer 5 counting compressors was greater than 10 minutes; as long as satisfy one of them condition; single-chip microcomputer 5 is used to control that pin of compressor 1 with regard to the high electricity frequency of output; high electricity is exported low electricity frequently frequently again after rp-drive 6 conversions; the low electricity of input input that relay 7 links to each other with rp-drive 6 frequently; relay 7 coil electricities; relay 7 output loop conductings, compressor 1 just restarts.Simultaneously, single-chip microcomputer 5 is used for that pin of high speed winds 9 in the control room with regard to the low electricity frequency of output, hangs down electricity and exports the height electricity frequently again after rp-drive 6 conversions frequently, and the input input height that relay 7 links to each other with rp-drive 6 is frequently electric, relay 7 coil blackouts, high speed winds 9 in the close chamber; At this moment, single-chip microcomputer 5 is used for that pin of low velocity wind 8 in the control room and just exports the height electricity frequently, and high electric frequency is the low electric frequency of output after rp-drive 6 conversions again, the low electricity frequency of the input input that relay 7 links to each other with rp-drive 6, relay 7 coil electricities switch to indoor low velocity wind 8 again.
Claims (1)
1, the antifreeze control method of a kind of air conditioner evaporator, it may further comprise the steps:
1., air-conditioning sets " refrigeration " order after opening, air-conditioning begins to freeze, temperature detecting module (4) begins to detect evaporimeter (3) coil temperature, and detected temperature transition is become temperature value, single-chip microcomputer (5) real-time sampling evaporimeter (3) coil temperature value;
2., detect evaporator coil temperature≤-2 ℃ when temperature detecting module (4), when single-chip microcomputer (5) samples-2 ℃ of temperature values and continues 2 minutes, single-chip microcomputer (5) cuts off compressor (1) output, compressor (1) is out of service, evaporimeter (3) stops evaporation, and evaporimeter (3) coil temperature just no longer reduces;
3., compressor (1) out of service after, single-chip microcomputer (5) switches to high speed winds (9) with the inner blower forced motor, high speed winds (9) blows out the cold air in the air-conditioning, exchanges the formation convection current with indoor air, and evaporimeter (3) coil temperature begins slowly to rise;
4., detect evaporimeter (3) coil temperature 〉=7 ℃ when temperature detecting module (4), when single-chip microcomputer (5) samples 7 ℃ of temperature values, when perhaps single-chip microcomputer (5) counting compressor (1) downtime was greater than 10 minutes, as long as satisfy one of them condition, single-chip microcomputer (5) is with compressor (1) output conducting, and compressor (1) just reruns; Simultaneously, single-chip microcomputer (5) also switches to original wind speed with the inner blower motor from high speed winds (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100968670A CN101509692A (en) | 2009-03-16 | 2009-03-16 | Antifreezing control method of air conditioner evaporator |
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| CNA2009100968670A CN101509692A (en) | 2009-03-16 | 2009-03-16 | Antifreezing control method of air conditioner evaporator |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915232A (en) * | 2010-08-24 | 2010-12-15 | 海信容声(广东)冰箱有限公司 | Method for controlling wine cabinet compressor |
| CN102425894A (en) * | 2011-09-07 | 2012-04-25 | 冯益安 | Method for manufacturing high-efficiency air conditioner and heat pump controller |
| CN104566645A (en) * | 2014-12-08 | 2015-04-29 | 广东美的制冷设备有限公司 | Multi-slit air conditioner, air conditioner anti-freezing protection method and air conditioner anti-freezing protection system |
| CN104596036A (en) * | 2015-01-12 | 2015-05-06 | 广东美的制冷设备有限公司 | Anti-freezing control method and device |
| CN104930669A (en) * | 2015-07-07 | 2015-09-23 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN105276773A (en) * | 2015-11-30 | 2016-01-27 | 广东美的制冷设备有限公司 | Work control method and device of air conditioner |
| CN105423495A (en) * | 2015-12-16 | 2016-03-23 | 美的集团武汉制冷设备有限公司 | Air conditioner as well as freeze control method and device thereof |
| CN106225340A (en) * | 2016-07-25 | 2016-12-14 | 信易电热机械有限公司 | A kind of refrigeration system |
| CN109708260A (en) * | 2018-12-26 | 2019-05-03 | 广东美的制冷设备有限公司 | Control method, air conditioner and the computer readable storage medium of air conditioner |
| CN110173820A (en) * | 2019-05-21 | 2019-08-27 | 四川虹美智能科技有限公司 | A kind of air-conditioner defrosting control method and device |
| CN110793159A (en) * | 2019-11-19 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN112524748A (en) * | 2020-12-09 | 2021-03-19 | 珠海格力电器股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
| CN113944998A (en) * | 2021-10-27 | 2022-01-18 | 奥普家居股份有限公司 | Air conditioner control method, air conditioner device, and computer-readable storage medium |
| CN115654661A (en) * | 2022-08-19 | 2023-01-31 | 珠海格力电器股份有限公司 | Air conditioner anti-freezing control method and air conditioner |
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2009
- 2009-03-16 CN CNA2009100968670A patent/CN101509692A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915232A (en) * | 2010-08-24 | 2010-12-15 | 海信容声(广东)冰箱有限公司 | Method for controlling wine cabinet compressor |
| WO2012024936A1 (en) * | 2010-08-24 | 2012-03-01 | 海信容声(广东)冰箱有限公司 | Control method of wine cabinet compressor |
| CN101915232B (en) * | 2010-08-24 | 2012-06-27 | 海信容声(广东)冰箱有限公司 | Method for controlling wine cabinet compressor |
| CN102425894A (en) * | 2011-09-07 | 2012-04-25 | 冯益安 | Method for manufacturing high-efficiency air conditioner and heat pump controller |
| CN104566645A (en) * | 2014-12-08 | 2015-04-29 | 广东美的制冷设备有限公司 | Multi-slit air conditioner, air conditioner anti-freezing protection method and air conditioner anti-freezing protection system |
| CN104596036A (en) * | 2015-01-12 | 2015-05-06 | 广东美的制冷设备有限公司 | Anti-freezing control method and device |
| CN104596036B (en) * | 2015-01-12 | 2017-12-12 | 广东美的制冷设备有限公司 | Anti-freeze control method and device |
| CN104930669B (en) * | 2015-07-07 | 2017-10-27 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN104930669A (en) * | 2015-07-07 | 2015-09-23 | 珠海格力电器股份有限公司 | Air conditioner operation method |
| CN105276773A (en) * | 2015-11-30 | 2016-01-27 | 广东美的制冷设备有限公司 | Work control method and device of air conditioner |
| CN105423495A (en) * | 2015-12-16 | 2016-03-23 | 美的集团武汉制冷设备有限公司 | Air conditioner as well as freeze control method and device thereof |
| CN105423495B (en) * | 2015-12-16 | 2018-03-27 | 美的集团武汉制冷设备有限公司 | Air conditioner and its anti-freeze control method and device |
| CN106225340A (en) * | 2016-07-25 | 2016-12-14 | 信易电热机械有限公司 | A kind of refrigeration system |
| CN109708260A (en) * | 2018-12-26 | 2019-05-03 | 广东美的制冷设备有限公司 | Control method, air conditioner and the computer readable storage medium of air conditioner |
| CN110173820A (en) * | 2019-05-21 | 2019-08-27 | 四川虹美智能科技有限公司 | A kind of air-conditioner defrosting control method and device |
| CN110793159A (en) * | 2019-11-19 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN110793159B (en) * | 2019-11-19 | 2021-10-26 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN112524748A (en) * | 2020-12-09 | 2021-03-19 | 珠海格力电器股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
| CN113944998A (en) * | 2021-10-27 | 2022-01-18 | 奥普家居股份有限公司 | Air conditioner control method, air conditioner device, and computer-readable storage medium |
| CN115654661A (en) * | 2022-08-19 | 2023-01-31 | 珠海格力电器股份有限公司 | Air conditioner anti-freezing control method and air conditioner |
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Open date: 20090819 |