CN110470070A - A kind of air-conditioning automatically cleaning control method - Google Patents
A kind of air-conditioning automatically cleaning control method Download PDFInfo
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- CN110470070A CN110470070A CN201910717304.2A CN201910717304A CN110470070A CN 110470070 A CN110470070 A CN 110470070A CN 201910717304 A CN201910717304 A CN 201910717304A CN 110470070 A CN110470070 A CN 110470070A
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- heat exchanger
- compressor
- indoor
- temperature sensor
- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The present invention relates to a kind of air-conditioning automatically cleaning control methods, including the refrigerant circulation loop being made of compressor, four-way valve, outdoor heat exchanger, throttle part, shut-off valve, indoor heat exchanger and gas-liquid separator, wherein, temperature sensor is respectively equipped on compressor, outdoor heat exchanger and indoor heat exchanger.The control method includes warm, Frost formation process, drying course I, drying course II and drying course III, can effectively enhance the cleaning effect to air-conditioning heat exchanger, and can high-temperature sterilization, and heat exchanger is made to keep drying.Moreover, dilution of the liquid refrigerants to oil can be reduced, extend the service life of compressor by control discharge superheat come the liquid measure of control system by opening.
Description
Technical field
This patent is related to a kind of air conditioner controlling technology, especially a kind of air-conditioning automatically cleaning control method.
Background technique
In long-time refrigeration in use, heat exchanger surface condensed water cannot dry up in time, moist environment can be grown air conditioner
Endophytic bacteria, mould etc., can not only generate peculiar smell also will affect human health；In addition if when air conditioner is laid up for a long time,
Heat exchanger surface can save bit by bit a large amount of dusts, increase airflow resistance, not only influence cooling or heating effect, the dust produced by boasting is also
It will affect indoor air quality.So proposing automatically cleaning to solve the problems, such as moist and heat exchanger dust stratification inside air conditioner
Function.
Now with air-conditioning self-cleaning function be to reach clean purpose using the condensed water clean the surface of heat exchanger, one
As pay attention to clean dust removing effects, have ignored the drying of heat exchanger surface after the completion of cleaning, the elimination of mould and peculiar smell imitated
Fruit is little, so the self-cleaning function of this patent more focuses on sterilizing taste removal and drying effect after the completion of heat exchanger cleaning.
In existing air-conditioning automatically cleaning control method, some shadows such as general emphasis environment temperature, evaporating temperature, humidity
The factor of automatically cleaning efficiency is rung, that ignores considers air-conditioning system reliability factor, such as compressor oil return, time liquid etc. are asked
Topic, because the degree of superheat of system is very low during heat exchanger solidifying frost, compressor returns the very risky of liquid, and a large amount of liquid
Body not only results in compressor liquid hammer, can also dilute lubricating oil cause compressor oil starvation component wear.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of air-conditioning automatically cleaning control methods, not only can be with
Achieve the purpose that heat exchanger cleans, guarantee air conditioner using effect, avoids air conditioner from generating peculiar smell, moreover, can also promote air-conditioning
Operational reliability of device during automatically cleaning.
The technical scheme is that
A kind of air-conditioning automatically cleaning control method, including by compressor, four-way valve, outdoor heat exchanger, throttle part, shut-off valve, room
The refrigerant circulation loop that interior heat exchanger and gas-liquid separator are constituted, wherein the exhaust ports of the compressor are equipped with exhaust temperature
Spend sensor；The outdoor heat exchanger is equipped with outdoor heat exchanger coil temperature sensor and outdoor return temperature sensor；Institute
Indoor heat exchanger is stated equipped with indoor heat exchanger coil temperature sensor and indoor return air temperature sensor；The control method packet
Include following steps:
1) indoor environment temperature T1 is detected by indoor return air temperature sensor；Outside by outdoor return temperature sensor sensing chamber
Environment temperature T4, and determine by the corresponding compressor target exhaust degree of superheat Tg1 of the T4；
2) start warm, and timing: opening refrigeration mode, compressor frequency P1；
3) compressor exhaust temperature T5 is detected by exhaust gas temperature sensor；It is detected by outdoor heat exchanger coil temperature sensor
Outdoor heat exchanger coil temperature T3；Indoor heat exchanger coils temperature Tp is detected by indoor heat exchanger coil temperature sensor；Meter
Calculation obtains compressor air-discharging degree of superheat Tg=T5-T3；And Δ Ta=T1-Tp；
4) as Tg < Tg1 or at 17 DEG C of Δ Ta <, turn in next step；Otherwise previous step is returned；Wherein: Tg1 is that compressor is normal
The target superheat degree of operation；
5) the every 30s of compressor frequency increases 2Hz, as Tg > Tg1 or at 17 DEG C of Δ Ta >, maintains current frequency；Or frequency reaches
To permission upper limit value when no longer increase；
6) T5 and T3 are continued to test, Tg is obtained；
If 7) Tg ﹥ Tg1, and when the duration reaches cumulative time 1, or, when pre- thermal endurance reaches cumulative time 2, under turning
Otherwise one step returns to previous step；
8) warm is exited, into Frost formation process, and timing: keep refrigeration mode and current compressor frequency；
9) T5 and T3 are continued to test, Tg is obtained；
If 10) Tg < Tg2, and when the duration reaches cumulative time 3, or, the Frost formation process duration reaches the cumulative time 4
When, turn in next step, otherwise, returns to previous step；Wherein: the degree of superheat lower limit that Tg2 operates normally for compressor, and Tg2 < Tg1；
11) Frost formation process is exited, into drying course I, and timing: compressor frequency is run by P2, unit four-way Vavle switching, is turned
For heating mode；
12) Tp is detected；
If 13) Tp=Tp1, and when the duration reaches cumulative time 5, or, turning when this baking duration reaches cumulative time 6
In next step, otherwise, previous step is returned；Wherein: Tp1 is the indoor coil first object temperature value of setting；
14) drying course I is exited, into drying course II, and timing: heating mode is kept, compressor frequency maintains P2 operation；
15) T5 and Tp is detected；
If 16) 100 DEG C of T5 > or 50 DEG C of Tp >, 4Hz drops in the every 20s of compressor frequency, when dropping to the lower limit value of frequency permission no longer
It reduces, otherwise, keeps current compression unit frequency, and return to previous step；
17) 19) if 115 DEG C of T5 > or 60 DEG C of TP > lasting 5s, goes to step, otherwise, goes to step 15)；
18) as Tp > Tp2, and when the duration reaches cumulative time 7 or when this baking duration reaches cumulative time 8, turn
In next step, otherwise, previous step is returned；Wherein: Tp2 is the second target temperature value of indoor coil of setting, and TP1 < TP2；
19) drying course II is exited, into drying course III, and timing；Compressor shutdown；
20) when this baking duration reaches cumulative time 9, drying course III is exited, control terminates.
Further, in the step 2, indoor fan is deep low gear, and outdoor fan is to open.
Further, in the step 8), indoor fan is closed, and outdoor fan is kept it turning on.
Further, in the step 11), indoor fan is remained turned-off；Outdoor fan is kept it turning on.
Further, in the step 14), indoor fan is run by deep low gear；Outdoor fan is kept it turning on.
Further, in the step 19, indoor fan keeps deep low gear operation；Outdoor fan is closed.
Beneficial effects of the present invention:
The present invention has rational design, clear logic, can enhance cleaning effect, and can high-temperature sterilization, and heat exchanger is made to keep drying.
Moreover, can also reduce dilution of the liquid refrigerants to oil by control discharge superheat come the liquid measure of control system, can extend
The service life of compressor.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Wherein: 1- compressor；2- four-way valve；3- outdoor heat exchanger；4- throttle part；5- shut-off valve；6- indoor heat exchanger；
7- gas-liquid separator；8- exhaust gas temperature sensor；9- outdoor heat exchanger coil temperature sensor；10- outdoor return temperature sensing
Device；11- indoor heat exchanger coil temperature sensor；12- indoor return air temperature sensor；13- outdoor fan；14- indoor fan.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of air-conditioning system, including by compressor 1, four-way valve 2, outdoor heat exchanger 3, throttle part 4, cut
The only refrigerant circulation loop of the compositions such as valve 5, indoor heat exchanger 6 and gas-liquid separator 7.The outdoor heat exchanger 3 is equipped with room
Outer blower 13.The indoor heat exchanger 6 is equipped with indoor fan 14.The exhaust ports of the compressor 1 are passed equipped with delivery temperature
Sensor 8；The outdoor heat exchanger 3 is equipped with outdoor heat exchanger coil temperature sensor 9 and outdoor return temperature sensor 10；Institute
Indoor heat exchanger 6 is stated equipped with indoor heat exchanger coil temperature sensor 11 and indoor return air temperature sensor 12.
A kind of automatically cleaning control method according to above-mentioned air-conditioning system, comprising the following steps:
1) indoor environment temperature T1 is detected by indoor return air temperature sensor；Outside by outdoor return temperature sensor sensing chamber
Environment temperature T4, and determine by the corresponding compressor target exhaust degree of superheat Tg1 of the T4；
2) start warm, and timing: opening refrigeration mode, compressor frequency P1, indoor fan is deep low gear, outdoor wind
Machine is opened；
3) compressor exhaust temperature T5 is detected by exhaust gas temperature sensor；It is detected by outdoor heat exchanger coil temperature sensor
Outdoor heat exchanger coil temperature T3；Indoor heat exchanger coils temperature Tp is detected by indoor heat exchanger coil temperature sensor；Meter
Calculation obtains compressor air-discharging degree of superheat Tg=T5-T3；And Δ Ta=T1-Tp；
4) as Tg < Tg1 or at 17 DEG C of Δ Ta <, turn in next step；Otherwise previous step is returned；Wherein: Tg1 is that compressor is normal
The target superheat degree of operation；
5) the every 30s of compressor frequency increases 2Hz, as Tg > Tg1 or at 17 DEG C of Δ Ta >, maintains current frequency；Or frequency reaches
To permission upper limit value when no longer increase；
6) T5 and T3 are continued to test, Tg is obtained；
If 7) Tg ﹥ Tg1, and when the duration reaches cumulative time 1, or, when pre- thermal endurance reaches cumulative time 2, under turning
Otherwise one step returns to previous step；
8) warm is exited, into Frost formation process, and timing: keep refrigeration mode and current compressor frequency, indoor wind
Organ closes, and outdoor fan is kept it turning on；
9) T5 and T3 are continued to test, Tg is obtained；
If 10) Tg < Tg2, and when the duration reaches cumulative time 3, or, the Frost formation process duration reaches the cumulative time 4
When, turn in next step, otherwise, returns to previous step；Wherein: the degree of superheat lower limit that Tg2 operates normally for compressor, and Tg2 < Tg1；
11) Frost formation process is exited, into drying course I, and timing: compressor frequency is run by P2, unit four-way Vavle switching, is turned
For heating mode；Indoor fan remains turned-off；Outdoor fan is kept it turning on；
12) Tp is detected；
If 13) Tp=Tp1, and when the duration reaches cumulative time 5, or, turning when this baking duration reaches cumulative time 6
In next step, otherwise, previous step is returned；Wherein: Tp1 is the indoor coil target temperature value of setting；
14) drying course I is exited, into drying course II, and timing: heating mode is kept, compressor frequency maintains P2 operation；
Indoor fan is run by deep low gear；Outdoor fan is kept it turning on；
15) T5 and Tp is detected；
If 16) 100 DEG C of T5 > or 50 DEG C of Tp >, 4Hz drops in the every 20s of compressor frequency, when dropping to the lower limit value of frequency permission no longer
It reduces, otherwise, keeps current compression unit frequency, and return to previous step；
17) 19) if 115 DEG C of T5 > or 60 DEG C of TP > lasting 5s, goes to step, otherwise, goes to step 15)；
18) as Tp > Tp2, and when the duration reaches cumulative time 7 or when this baking duration reaches cumulative time 8, turn
In next step, otherwise, previous step is returned；Wherein: Tp2 is the indoor coil target temperature value of setting, and TP1 < TP2；
19) drying course II is exited, into drying course III, and timing；Compressor shutdown, indoor fan keep deep low gear fortune
Row；Outdoor fan is closed；
20) when this baking duration reaches cumulative time 9, drying course III is exited, control terminates.
The explanation of relevant parameter:
1. compressor target exhaust degree of superheat Tg1: the target superheat degree operated normally for compressor increases with T4 temperature and is increased
Add, between 30 ~ 50 DEG C.
2. compressor target exhaust degree of superheat Tg2: for compressor operate normally degree of superheat lower limit, between 5 ~ 20 DEG C it
Between.
3. compressor frequency P1: for warm compressor initial operation frequency, between 20 ~ 60Hz.
4. compressor frequency P2: for drying course compressor operation frequency, between 30 ~ 50Hz.
5. indoor coil first object temperature value Tp1: heat exchange temperature when for evaporator defrost, between 20 ~ 30 DEG C it
Between.
6. the second target temperature value of indoor coil Tp2: for evaporator drying when heat exchange temperature, between 30 ~ 50 DEG C it
Between.
7. cumulative time 1 to the cumulative time 9 is the setting value between 1 ~ 12 minute.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (6)
1. a kind of air-conditioning automatically cleaning control method, including by compressor, four-way valve, outdoor heat exchanger, throttle part, shut-off valve,
The refrigerant circulation loop that indoor heat exchanger and gas-liquid separator are constituted, wherein the exhaust ports of the compressor are equipped with exhaust
Temperature sensor；The outdoor heat exchanger is equipped with outdoor heat exchanger coil temperature sensor and outdoor return temperature sensor；
The indoor heat exchanger is equipped with indoor heat exchanger coil temperature sensor and indoor return air temperature sensor；It is characterized in that: institute
State control method the following steps are included:
1) indoor environment temperature T1 is detected by indoor return air temperature sensor；Outside by outdoor return temperature sensor sensing chamber
Environment temperature T4, and determine by the corresponding compressor target exhaust degree of superheat Tg1 of the T4；
2) start warm, and timing: opening refrigeration mode, compressor frequency P1；
3) compressor exhaust temperature T5 is detected by exhaust gas temperature sensor；It is detected by outdoor heat exchanger coil temperature sensor
Outdoor heat exchanger coil temperature T3；Indoor heat exchanger coils temperature Tp is detected by indoor heat exchanger coil temperature sensor；Meter
Calculation obtains compressor air-discharging degree of superheat Tg=T5-T3；And Δ Ta=T1-Tp；
4) as Tg < Tg1 or at 17 DEG C of Δ Ta <, turn in next step；Otherwise previous step is returned；Wherein: Tg1 is that compressor is normal
The target superheat degree of operation；
5) the every 30s of compressor frequency increases 2Hz, as Tg > Tg1 or at 17 DEG C of Δ Ta >, maintains current frequency；Or frequency reaches
To permission upper limit value when no longer increase；
6) T5 and T3 are continued to test, Tg is obtained；
If 7) Tg ﹥ Tg1, and when the duration reaches cumulative time 1, or, when pre- thermal endurance reaches cumulative time 2, under turning
Otherwise one step returns to previous step；
8) warm is exited, into Frost formation process, and timing: keep refrigeration mode and current compressor frequency；
9) T5 and T3 are continued to test, Tg is obtained；
If 10) Tg < Tg2, and when the duration reaches cumulative time 3, or, the Frost formation process duration reaches the cumulative time 4
When, turn in next step, otherwise, returns to previous step；Wherein: the degree of superheat lower limit that Tg2 operates normally for compressor, and Tg2 < Tg1；
11) Frost formation process is exited, into drying course I, and timing: compressor frequency is run by P2, unit four-way Vavle switching, is turned
For heating mode；
12) Tp is detected；
If 13) Tp=Tp1, and when the duration reaches cumulative time 5, or, turning when this baking duration reaches cumulative time 6
In next step, otherwise, previous step is returned；Wherein: Tp1 is the indoor coil first object temperature value of setting；
14) drying course I is exited, into drying course II, and timing: heating mode is kept, compressor frequency maintains P2 operation；
15) T5 and Tp is detected；
If 16) 100 DEG C of T5 > or 50 DEG C of Tp >, 4Hz drops in the every 20s of compressor frequency, when dropping to the lower limit value of frequency permission no longer
It reduces, otherwise, keeps current compression unit frequency, and return to previous step；
17) 19) if 115 DEG C of T5 > or 60 DEG C of TP > lasting 5s, goes to step, otherwise, goes to step 15)；
18) as Tp > Tp2, and when the duration reaches cumulative time 7 or when this baking duration reaches cumulative time 8, turn
In next step, otherwise, previous step is returned；Wherein: Tp2 is the second target temperature value of indoor coil of setting, and TP1 < TP2；
19) drying course II is exited, into drying course III, and timing；Compressor shutdown；
20) when this baking duration reaches cumulative time 9, drying course III is exited, control terminates.
2. air-conditioning automatically cleaning control method according to claim 1, it is characterized in that: in the step 2, indoor fan is
Deep low gear, outdoor fan are to open.
3. air-conditioning automatically cleaning control method according to claim 1, it is characterized in that: indoor fan closes in the step 8)
It closes, outdoor fan is kept it turning on.
4. air-conditioning automatically cleaning control method according to claim 1, it is characterized in that: indoor fan is protected in the step 11)
Hold closing；Outdoor fan is kept it turning on.
5. air-conditioning automatically cleaning control method according to claim 1, it is characterized in that: indoor fan is pressed in the step 14)
Deep low gear operation；Outdoor fan is kept it turning on.
6. air-conditioning automatically cleaning control method according to claim 1, it is characterized in that: indoor fan is protected in the step 19
Hold deep low gear operation；Outdoor fan is closed.
Priority Applications (1)
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|---|---|---|---|
| CN201910717304.2A CN110470070B (en) | 2019-08-05 | 2019-08-05 | Air conditioner self-cleaning control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717304.2A CN110470070B (en) | 2019-08-05 | 2019-08-05 | Air conditioner self-cleaning control method |
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| CN110470070B CN110470070B (en) | 2021-02-02 |
Family
ID=68510249
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| CN111380152A (en) * | 2020-03-27 | 2020-07-07 | 广东美的制冷设备有限公司 | High-temperature sterilization control method and device, air conditioner and storage medium |
| CN111578415A (en) * | 2020-05-25 | 2020-08-25 | 广东美的制冷设备有限公司 | Radiation air conditioner and compressor protection control method and device |
| CN111594982A (en) * | 2020-03-03 | 2020-08-28 | 青岛海尔空调器有限总公司 | Control method and control device for cleaning air conditioner and air conditioner |
| CN111750484A (en) * | 2020-06-19 | 2020-10-09 | 宁波奥克斯电气股份有限公司 | Air conditioner, multi-online degerming control method and device and multi-online system |
| CN114294739A (en) * | 2021-12-30 | 2022-04-08 | 海信（广东）空调有限公司 | Air conditioner and self-cleaning method thereof |
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| CN111578415A (en) * | 2020-05-25 | 2020-08-25 | 广东美的制冷设备有限公司 | Radiation air conditioner and compressor protection control method and device |
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| CN114294739B (en) * | 2021-12-30 | 2023-01-31 | 海信（广东）空调有限公司 | Air conditioner and self-cleaning method thereof |
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