CN110836461B - Air conditioner frosting control method - Google Patents
Air conditioner frosting control method Download PDFInfo
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- CN110836461B CN110836461B CN201810940260.5A CN201810940260A CN110836461B CN 110836461 B CN110836461 B CN 110836461B CN 201810940260 A CN201810940260 A CN 201810940260A CN 110836461 B CN110836461 B CN 110836461B
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- air conditioner
- revolutions
- control method
- frosting
- fan
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010257 thawing Methods 0.000 abstract description 21
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air conditioners, and particularly relates to a frosting control method of an air conditioner. In order to ensure the frosting uniformity of the air conditioner and improve the defrosting efficiency, the defrosting control method of the air conditioner provided by the invention aims at the air conditioner with double fans arranged on an outdoor unit, and the method comprises the following steps: detecting the temperature of an outer coil pipe in the heating operation process of the air conditioner; detecting the current I of the upper fan at preset time intervals under the condition that the temperature of the outer coil is lower than the dew point temperatureOn the upper partAnd current I of the lower fanLower part(ii) a Calculating Δ I ═ IOn the upper part－ILower partL, |; if Δ I>0.01A, and IOn the upper part＞ILower partAnd increasing the rotating speed of the upper fan by a first preset number of revolutions. The invention balances the unevenness of the temperature point of the outer coil of the outdoor heat exchanger by controlling the wind speeds of different areas of the outer coil, thereby reasonably controlling the frosting uniformity, leading the frosting of the outer machine to be more uniform, being uniform and beneficial to defrosting, and also improving the defrosting efficiency.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a frosting control method of an air conditioner.
Background
The air conditioner as a device capable of adjusting the indoor environment temperature has the working principle that: the indoor environment temperature is lowered or raised by the refrigerant switching between the circulation lines through the high pressure/low pressure/gas/liquid state, namely, the air conditioner is in the cooling or heating working condition from the perspective of the indoor unit. When the air conditioner heats the operation, if outdoor coil pipe temperature under certain humidity condition crosses lowly can lead to the condition of frosting, and outdoor coil pipe frosting can lead to outdoor heat exchanger's heat exchange efficiency to reduce, influences the heating effect of air conditioner, reduces indoor environment's travelling comfort, influences user experience. Therefore, in the situation that the air conditioner is in the heating working condition, the outdoor coil of the air conditioner needs to be defrosted timely and effectively.
Because the frosting speed and thickness of the outdoor unit are influenced by the temperature and the wind speed of the external coil, and the split flow of the outdoor heat exchanger cannot be completely consistent, the non-uniformity of the temperature of the external coil is inevitably caused when the wind speed is the same, the phenomenon of non-uniform frosting of the external coil is caused, and the defrosting efficiency of the air conditioner is further influenced.
Therefore, the present invention provides a frost formation control method for an air conditioner to solve the above problems.
Disclosure of Invention
Based on the above problems in the background art, in order to improve the defrosting efficiency of the air conditioner, the invention provides a defrosting control method of the air conditioner, wherein an outdoor unit of the air conditioner comprises an upper fan and a lower fan, and the method comprises the following steps: detecting the temperature of an outer coil pipe in the heating operation process of the air conditioner; detecting the current I of the upper fan at preset time intervals under the condition that the temperature of the outer coil is lower than the dew point temperatureOn the upper partAnd current I of the lower fanLower part(ii) a Calculating Δ I ═ IOn the upper part－ILower partL, |; if Δ I>0.01A, and IOn the upper part＞ILower partAnd increasing the rotating speed of the upper fan by a first preset number of revolutions.
In a preferred embodiment of the above air conditioner frosting control method, the method further comprises: calculating delta I calculated at two adjacent times after the upper fan increases a first preset number of revolutions1And Δ I2(ii) a If Δ I1≥ΔI2Then maintaining the upper blower andand the rotating speed of the lower fan is unchanged, otherwise, the rotating speed of the upper fan is increased by a second preset revolution.
In a preferred embodiment of the above-described air conditioner frosting control method, the first preset number of revolutions is an arbitrary value between 40 and 60 revolutions.
In a preferred embodiment of the above-described air conditioner frosting control method, the first preset number of revolutions is 50 revolutions.
In a preferred embodiment of the above-described air conditioner frosting control method, the second preset number of revolutions is an arbitrary value between 40 and 60 revolutions.
In a preferred embodiment of the above-described air conditioner frosting control method, the second preset number of revolutions is 50 revolutions.
In a preferred embodiment of the above-described air conditioner frosting control method, the preset time is any time between 50 and 70 seconds.
In a preferred embodiment of the above-described air conditioner frosting control method, the preset time is 60 seconds.
The invention balances the unevenness of the temperature point of the outer coil of the outdoor heat exchanger by controlling the wind speeds of different areas of the outer coil, thereby reasonably controlling the frosting uniformity, leading the frosting of the outer machine to be more uniform, being uniform and beneficial to defrosting, and also improving the defrosting efficiency. In addition, the current of the upper fan and the current of the lower fan are changed due to the resistance action of the frost layer, the frosting degree of different areas of the outer coil pipe is judged according to the current values of the upper fan and the lower fan, and the rotating speed of the upper fan or the lower fan is controlled, so that the frosting of the outdoor unit is more uniform, the frosting uniformity is favorable for defrosting, and the defrosting efficiency is also improved.
Drawings
Fig. 1 is a flowchart of an air conditioner frosting control method of the present invention.
Detailed Description
In order to make the embodiments, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The defrosting control method of the invention mainly aims at the air conditioner with double fans arranged on an outdoor unit. Specifically, the present invention is directed to an air conditioner, in which an outdoor unit includes an upper fan and a lower fan, and the upper fan and the lower fan may independently rotate in forward or reverse directions.
Referring first to fig. 1, fig. 1 is a flowchart of an air conditioner frosting control method of the present invention. As shown in fig. 1, the method of the present invention comprises: s110, detecting the temperature of an outer coil pipe in the heating operation process of the air conditioner; s120, detecting the current I of the upper fan at preset time intervals under the condition that the temperature of the outer coil is lower than the dew point temperatureOn the upper partAnd current I of lower fanLower part(ii) a S130, calculate Δ I ═ IOn the upper part－ILower partL, |; s140, if delta I>0.01A, and IOn the upper part＞ILower partAnd increasing the rotating speed of the upper fan by a first preset number of revolutions. As an example, the first preset number of revolutions may be 50 revolutions, or the first preset number of revolutions may be any value between 40-60 revolutions; the preset time may be 60 seconds, or any time between 50 and 70 seconds.
It can be understood by those skilled in the art that since the frosting speed and thickness of the outdoor unit are affected by the temperature and the wind speed of the external coil, and the split flows of the outdoor heat exchanger cannot be completely consistent, when the wind speed is the same, the temperature of the external coil is inevitably non-uniform, which causes the non-uniform frosting of the external coil, and further affects the defrosting efficiency of the air conditioner. When the air conditioner begins to frost, the current of the upper fan and the lower fan changes due to the resistance of the frost layer, the current of the upper fan and the lower fan increases along with the increase of the resistance, therefore, if the temperature of the outer coil pipe is lower than the dew point temperature (the dew point temperature refers to the temperature of the air when the air is cooled to saturation under the condition that the water vapor content and the air pressure do not change)>0.01A, the outdoor unit is in a state of starting frosting, and the frosting degree of different areas of the external coil pipe can be judged according to the current values of the upper fan and the lower fan at the moment, so that the frosting degree is controlledThe rotating speed of the upper fan or the lower fan is controlled, so that the outdoor unit can be frosted more uniformly, and the frosting uniformity is favorable for defrosting, and the defrosting efficiency is also improved. In particular, IOn the upper part＞ILower partWhen the frosting degree of the upper part of the outer coil pipe is larger, the rotating speed of the upper fan can be controlled to be increased by 50 revolutions.
The invention balances the unevenness of the temperature point of the outer coil of the outdoor heat exchanger by controlling the wind speeds of different areas of the outer coil, thereby reasonably controlling the frosting uniformity, leading the frosting of the outer machine to be more uniform, being uniform and beneficial to defrosting, and also improving the defrosting efficiency. In addition, the current of the upper fan and the current of the lower fan are changed due to the resistance action of the frost layer, the frosting degree of different areas of the outer coil pipe is judged according to the current values of the upper fan and the lower fan, and the rotating speed of the upper fan or the lower fan is controlled, so that the frosting of the outdoor unit is more uniform, the frosting uniformity is favorable for defrosting, and the defrosting efficiency is also improved.
Further, the method of the present invention further comprises: increasing a first preset revolution at the upper fan, and calculating delta I calculated in two adjacent times1And Δ I2(ii) a If Δ I1≥ΔI2And if not, increasing the rotating speed of the upper fan by a second preset revolution. As an example, the second preset number of revolutions is 50 revolutions, or the second preset number of revolutions may be any value between 40-60 revolutions. As an example, Δ I2Is the difference between the current value of the upper fan and the current value of the lower fan at the current preset time, delta I1The difference between the current value of the upper fan and the current value of the lower fan is preset for the last moment. It will be understood by those skilled in the art that if Δ I1≥ΔI2When the frosting of the outer coil tends to be uniform, the rotating speed of the upper fan and the lower fan can be kept unchanged, and when delta I is used1＜ΔI2When the frosting difference is eliminated, the frosting difference is eliminated by further increasing the rotating speed of the upper fan, so that the frosting of the outdoor unit is more uniform, the frosting is uniform, and the defrosting is facilitated, namely, the defrosting efficiency is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (7)
1. An air conditioner frosting control method is characterized in that the method comprises the following steps:
detecting the temperature of an outer coil pipe in the heating operation process of the air conditioner;
detecting the current I of the upper fan at preset time intervals under the condition that the temperature of the outer coil is lower than the dew point temperatureOn the upper partAnd current I of the lower fanLower part；
Calculating Δ I ═ IOn the upper part－ILower part|；
If Δ I>0.01A, and IOn the upper part＞ILower partIncreasing the rotating speed of the upper fan by a first preset number of revolutions;
calculating delta I calculated at two adjacent times after the upper fan increases a first preset number of revolutions1And Δ I2；
If Δ I1≥ΔI2And if not, increasing the rotating speed of the upper fan by a second preset revolution.
2. The air conditioner frost control method of claim 1, wherein the first preset number of revolutions is any value between 40-60 revolutions.
3. The air conditioner frost formation control method of claim 2, wherein the first preset number of revolutions is 50 revolutions.
4. The air conditioner frost control method of claim 3, wherein the second preset number of revolutions is any value between 40-60 revolutions.
5. The air conditioner frost control method of claim 4, wherein the second preset number of revolutions is 50 revolutions.
6. The air conditioner frost control method of claim 5, wherein the preset time is any time between 50-70 seconds.
7. The air conditioner frost control method of claim 5, wherein the preset time is 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940260.5A CN110836461B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940260.5A CN110836461B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
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| Publication Number | Publication Date |
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| CN110836461A CN110836461A (en) | 2020-02-25 |
| CN110836461B true CN110836461B (en) | 2021-09-21 |
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| CN201810940260.5A Active CN110836461B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6441782A (en) * | 1987-08-07 | 1989-02-14 | Toshiba Corp | Heat pump type air conditioner |
| CN104807132A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| CN106871338A (en) * | 2017-01-19 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of air-conditioner defrosting control method |
| CN107328026A (en) * | 2017-07-31 | 2017-11-07 | 珠海格力电器股份有限公司 | Fan control method and device and air conditioner outdoor unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183888A (en) * | 1984-09-29 | 1986-04-28 | Toshiba Corp | Heat exchanger for freezing machine |
| CN102242988A (en) * | 2011-07-04 | 2011-11-16 | 贾凤华 | Spliced aluminum alloy fin calandria evaporator |
| CN206094656U (en) * | 2016-09-19 | 2017-04-12 | Tcl家用电器（合肥）有限公司 | Icy case of evaporimeter soft breeze |
| CN108302880B (en) * | 2017-12-27 | 2020-07-24 | 青岛海尔股份有限公司 | Refrigerator and defrosting control method thereof |
-
2018
- 2018-08-17 CN CN201810940260.5A patent/CN110836461B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6441782A (en) * | 1987-08-07 | 1989-02-14 | Toshiba Corp | Heat pump type air conditioner |
| CN104807132A (en) * | 2014-01-23 | 2015-07-29 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| CN106871338A (en) * | 2017-01-19 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of air-conditioner defrosting control method |
| CN107328026A (en) * | 2017-07-31 | 2017-11-07 | 珠海格力电器股份有限公司 | Fan control method and device and air conditioner outdoor unit |
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| CN110836461A (en) | 2020-02-25 |
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Effective date of registration: 20210819 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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