CN110836462A - Air conditioner frosting control method - Google Patents
Air conditioner frosting control method Download PDFInfo
- Publication number
- CN110836462A CN110836462A CN201810940276.6A CN201810940276A CN110836462A CN 110836462 A CN110836462 A CN 110836462A CN 201810940276 A CN201810940276 A CN 201810940276A CN 110836462 A CN110836462 A CN 110836462A
- Authority
- CN
- China
- Prior art keywords
- fan
- air conditioner
- current
- control method
- frosting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (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: s110, detecting the current I of the upper fan at preset time intervals in the heating operation process of the air conditionerOn the upper partAnd current I of the lower fanLower part(ii) a S120, according to the IOn the upper partAnd said ILower partSelectively adjusting the rotational speed of the upper fan and/or the lower fan. Hair brushThe non-uniformity of the temperature point of the outer coil of the outdoor heat exchanger is balanced by controlling the wind speeds of different areas of the outer coil, and then the frosting uniformity is reasonably controlled, so that the outer unit is frosted more uniformly, the frosting uniformity is favorable for defrosting, and the defrosting efficiency is also improved.
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 is characterized by comprising the following steps: s110, detecting the current I of the upper fan at preset time intervals in the heating operation process of the air conditionerOn the upper partAnd current I of the lower fanLower part(ii) a S120, according to the IOn the upper partAnd said ILower partSelectively adjusting the rotational speed of the upper fan and/or the lower fan.
In a preferred embodiment of the above air conditioner frosting control method, "during heating operation of the air conditionerIn the process, the current I of the upper fan is detected every preset timeOn the upper partAnd current I of the lower fanLower partBefore, the method further comprises: detecting the upper temperature t of the outer coil pipe during the heating operation of the air conditioner1And lower temperature t2(ii) a If t is1<Dew point temperature of t2<The dew point temperature is detected, step S110 is performed.
In a preferred embodiment of the above air conditioner frosting control method, "according to said IOn the upper partAnd said ILower partThe step of selectively adjusting the rotation speed of the upper fan and/or the lower fan specifically comprises: calculating the current attenuation value delta I of the upper fan within the preset timeOn the upper part＝|IUpper n－IUpper n-1And the current attenuation value delta I of the lower fanLower part＝|ILower n－ILower n-1L, |; if Δ IOn the upper part>ΔILower partIncreasing the rotating speed of the upper fan by a preset number of revolutions, otherwise, increasing the rotating speed of the lower fan by the preset number of revolutions; wherein, IUpper nIs the current value of the current moment of the upper fan, IUpper n-1The current value of the upper fan at the previous moment is obtained; i isLower nIs the current value of the lower fan at the current moment, ILower n-1The current value of the lower fan at the previous moment is obtained.
In a preferred embodiment of the above air conditioner frosting control method, the preset number of revolutions is an arbitrary value between 40 and 60 revolutions.
In a preferred embodiment of the above air conditioner frost formation control method, the preset number of revolutions is 50 revolutions.
In a preferred embodiment of the above air conditioner frosting control method, the preset time is any time between 50 and 70 seconds.
In a preferred embodiment of the above 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 lower fan can be changed due to the resistance action of the frost layer, the frosting speed of different areas of the outer coil pipe can be judged according to the attenuation speed of the current values of the upper fan and the lower fan, and therefore the rotating speed of the upper fan or the lower fan is controlled, the frosting of the outdoor unit is more uniform, the frosting is uniform, defrosting is facilitated, and the defrosting efficiency is 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 current I of the upper fan at preset time intervals in the heating operation process of the air conditionerOn the upper partAnd current I of lower fanLower part(ii) a S120, according to IOn the upper partAnd ILower partThe speed of the upper fan and/or the lower fan is selectively adjusted. As an example, the preset time may be 60 seconds, or any time between 50-70 seconds.
Specifically, before step S110, the method of the present invention further includes: detecting the upper temperature t of the outer coil pipe during the heating operation of the air conditioner1And lower temperature t2(ii) a If t is1<Dew point temperature of t2<Dew point temperature ofStep S110 is performed.
In step S120, the current attenuation Δ I of the wind turbine is calculated within 60 secondsOn the upper part＝|IUpper n－IUpper n-1I and current attenuation value delta I of lower fanLower part＝|ILower n－ILower n-1L, |; if Δ IOn the upper part>ΔILower partAnd if not, increasing the rotating speed of the lower fan by the preset rotating speed. Wherein, IUpper nIs the current value of the current moment of the upper fan, IUpper n-1The current value of the upper fan at the previous moment is obtained; i isLower nIs the current value of the lower fan at the current moment, ILower n-1The current value of the lower fan at the previous moment is obtained. As an example, the preset number of revolutions may be 50 revolutions, or may be any number of revolutions between 40-60 revolutions.
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 action of a frost layer, and the current of the upper fan and the lower fan increases along with the increase of the resistance, so that the outdoor unit is in a state of starting to frost under the condition that the upper temperature and the lower temperature of the outer coil pipe are both lower than the dew point temperature (the dew point temperature refers to the temperature when the air is cooled to saturation under the condition that the water vapor content and the air pressure are not changed), the frosting speed of different areas of the outer coil pipe can be judged according to the attenuation speed of the current value of the upper fan and the attenuation speed of the current value of the lower fan, and the rotating speed of the upper fan or the rotating speed of the lower fan is controlled, so that the frosting of the outdoor unit is more uniform, the frosting uniformity is favorable for the defrosting, and the defrosting efficiency is 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 lower fan can be changed due to the resistance action of the frost layer, the frosting speed of different areas of the outer coil pipe can be judged according to the attenuation speed of the current values of the upper fan and the lower fan, and therefore the rotating speed of the upper fan or the lower fan is controlled, the frosting of the outdoor unit is more uniform, the frosting is uniform, defrosting is facilitated, and 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:
s110, detecting the current I of the upper fan at preset time intervals in the heating operation process of the air conditionerOn the upper partAnd current I of the lower fanLower part；
S120, according to the IOn the upper partAnd said ILower partSelectively adjusting the rotational speed of the upper fan and/or the lower fan.
2. The air conditioner frost control method of claim 1, wherein the current I of the upper fan is detected every predetermined time during a heating operation of the air conditionerOn the upper partAnd current I of the lower fanLower partBefore, the method further comprises:
detecting the upper part of the outer coil pipe during the heating operation of the air conditionerSection temperature t1And lower temperature t2；
If t is1<Dew point temperature of t2<The dew point temperature is detected, step S110 is performed.
3. The air conditioner frost control method according to claim 2, wherein "according to said IOn the upper partAnd said ILower partThe step of selectively adjusting the rotation speed of the upper fan and/or the lower fan specifically comprises:
calculating the current attenuation value delta I of the upper fan within the preset timeOn the upper part＝|IUpper n－IUpper n-1And the current attenuation value delta I of the lower fanLower part＝|ILower n－ILower n-1|；
If Δ IOn the upper part>ΔILower partIncreasing the rotating speed of the upper fan by a preset number of revolutions, otherwise, increasing the rotating speed of the lower fan by the preset number of revolutions;
wherein, IUpper nIs the current value of the current moment of the upper fan, IUpper n-1The current value of the upper fan at the previous moment is obtained; i isLower nIs the current value of the lower fan at the current moment, ILower n-1The current value of the lower fan at the previous moment is obtained.
4. The air conditioner frost control method according to claim 3, wherein the preset number of revolutions is any value between 40-60 revolutions.
5. The air conditioner frost control method of claim 4, wherein the 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 6, wherein the preset time is 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940276.6A CN110836462B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940276.6A CN110836462B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110836462A true CN110836462A (en) | 2020-02-25 |
| CN110836462B CN110836462B (en) | 2021-09-21 |
Family
ID=69574285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810940276.6A Active CN110836462B (en) | 2018-08-17 | 2018-08-17 | Air conditioner frosting control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110836462B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6441782A (en) * | 1987-08-07 | 1989-02-14 | Toshiba Corp | Heat pump type air conditioner |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| JP2010223494A (en) * | 2009-03-23 | 2010-10-07 | Mitsubishi Electric Corp | 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 |
| WO2015145714A1 (en) * | 2014-03-28 | 2015-10-01 | 日立アプライアンス株式会社 | Air conditioner |
| 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 | Blower control method and device, air-conditioner outdoor unit |
-
2018
- 2018-08-17 CN CN201810940276.6A patent/CN110836462B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6441782A (en) * | 1987-08-07 | 1989-02-14 | Toshiba Corp | Heat pump type air conditioner |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| JP2010223494A (en) * | 2009-03-23 | 2010-10-07 | Mitsubishi Electric Corp | 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 |
| WO2015145714A1 (en) * | 2014-03-28 | 2015-10-01 | 日立アプライアンス株式会社 | Air conditioner |
| 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 | Blower control method and device, air-conditioner outdoor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110836462B (en) | 2021-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110836440A (en) | Control method for inhibiting frosting of air conditioner | |
| CN110836456A (en) | Control method for inhibiting frosting of air conditioner | |
| CN110836435B (en) | Control method for inhibiting frosting of air conditioner | |
| CN110836469B (en) | Defrosting control method for air conditioner | |
| CN110836454B (en) | Control method for inhibiting frosting of air conditioner | |
| CN110836462B (en) | Air conditioner frosting control method | |
| CN110836470B (en) | Defrosting control method for fixed-frequency air conditioner | |
| CN110836461B (en) | Air conditioner frosting control method | |
| CN110836497B (en) | Air conditioner frosting control method | |
| CN110836496B (en) | Air conditioner frosting control method | |
| CN110836495B (en) | Air conditioner frosting control method | |
| CN110836487B (en) | Air conditioner frosting control method | |
| CN110836444B (en) | Defrosting control method for fixed-frequency air conditioner | |
| CN110836466B (en) | Defrosting control method for fixed-frequency air conditioner | |
| CN110836457A (en) | Control method for inhibiting frosting of air conditioner | |
| CN110836437A (en) | Defrosting control method for air conditioner | |
| CN110836439A (en) | Defrosting control method for air conditioner | |
| CN110836489B (en) | Defrosting control method for air conditioner | |
| CN110836436A (en) | Defrosting control method for air conditioner | |
| CN110836472A (en) | Defrosting control method for fixed-frequency air conditioner | |
| CN110836465B (en) | Defrosting control method for air conditioner | |
| CN110836491B (en) | Defrosting control method for air conditioner | |
| CN110836498B (en) | Defrosting control method for air conditioner | |
| CN110836501B (en) | Defrosting control method for air conditioner | |
| CN110836485A (en) | Air conditioner operation control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210819 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |