CN106594982A - Fan linkage type defrosting method for air conditioner - Google Patents
Fan linkage type defrosting method for air conditioner Download PDFInfo
- Publication number
- CN106594982A CN106594982A CN201611087283.3A CN201611087283A CN106594982A CN 106594982 A CN106594982 A CN 106594982A CN 201611087283 A CN201611087283 A CN 201611087283A CN 106594982 A CN106594982 A CN 106594982A
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- Prior art keywords
- defrosting
- time
- fan
- air conditioner
- air
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- 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.)
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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
- F24F11/62—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
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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
-
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a fan linkage type defrosting method for an air conditioner. The method comprises steps as follows: when the air conditioner operates, an actual current value I of an outdoor fan (1) is detected, a function of current variables and time variables is proposed and shown as follows: delta I/delta t=Kn, a Kn value is monitored all the time, and once Kn is larger than or equal to a defrosting alarm value N, a unit enters a defrosting mode. With the adoption of the defrosting method, whether the unit is about to enter the defrosting mode can be accurately determined.
Description
Technical field
The present invention relates to field of air conditioning, is especially the fan linkage formula Defrost method of air-conditioning.
Background technology
During air-conditioning system heating operation, blower fan easily forms frost after driving air and coil heat exchange, air to be absorbed heat by coil pipe
Layer is covered on coil pipe.To ensure heat exchange efficiency, defrosting process must be just carried out.Conventional Defrost method is by four-way change-over valve
Commutation, and indoor fan is closed, into defrosting mode, directly HTHP refrigerant outdoor heat exchanger is transported to into using compressor
To melt frost layer.
There is following drawback in the Defrost method of prior art.First, prior art is usually according to coil temperature, pressure
The factors such as contracting machine pressure at expulsion, run time judging whether frosting, but because system reaction and control feedback all exist
Hysteresis quality, so often having arrived frost layer has run up to certain thickness, exchange thermal effect is caused after larger negative effect
Judge defrosting, i.e., can not in time judge defrosting；And just because of can not in time judge defrosting, so to after heating the cycle
Phase, frost layer is often increasingly thicker, even results in and is difficult complete defrost, and heat exchange efficiency also naturally will not be very high；Moreover, prior art
On time to defrosting, also without accurately setting, the time for setting a defrosting is estimated often by experience, this is occurred as soon as
Awkward embarrassment, defrosting time is long, and room is unable to for a long time heating and can reduce Consumer's Experience, and defrosting time is too short and causes defrost
It is unnet.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of wind of the air-conditioning that can precisely determine whether and enter defrosting mode
Machine coordinated type Defrost method.
The technical solution of the present invention is to provide a kind of fan linkage formula Defrost method of air-conditioning, and its step includes：
During operation of air conditioner, actual current value I of outdoor fan is detected,
And the function of one current variable of proposition and time variable
Δ I/ Δ t=Kn,
Moment monitors Kn values, and after discovery Kn >=defrosting warning value N, unit enters defrosting mode.
The above-mentioned principle for judging is as with thickening of the frost layer on heat exchange coil, back wind resistance can become big naturally, blower fan
Also there is therewith significantly change in real work electric current, does a curve according to blower fan work electric current and time and finds, normal shape
The curve is smoother under condition, and working as frosting causes electric current cataclysm, curve an obvious flex point suddenly occur, its curvature
It is exactly that Kn can increase naturally, so after Kn exceedes certain setting warning value suddenly, it is possible to judge frosting.
The fan linkage formula Defrost method of air-conditioning of the present invention compared with prior art, with advantages below：
Above-mentioned control method, using the change of electric current frosting is determined whether, using electric current, this parameter compares prior art
Other specification feedback time is short, fast response time, therefore judged result is accurately quick, it is ensured that defrosting in time, has ensured unit
Heat exchange efficiency；And, because defrosting is timely, frost layer will not pile up, and avoid naturally and heat unnet awkward of later stage in cycle defrost
A word used for translation.
Preferably, proposing the function of a frost thickness h and blower fan actual current I
I=K1×h2+K2×h+c
Wherein, K1And K2For correction factor, c is the rated current of blower fan；
Conversed after frost thickness h according to actual current I, defrosting time conversed according to h × Km=T,
Further according to defrosting time defrosting.
So, according to said method, the thickness of frost layer be can accurately judge, and then the time of defrosting, pin precisely conversed
Carry out extremely strong to property is defrosted, and both ensure that and effective and thorough can have been defrosted, and turn avoid defrost overlong time causes room to supply
Warm deficiency, optimizes Consumer's Experience.
Description of the drawings
Fig. 1 is the system structure diagram of the fan linkage formula Defrost method of air-conditioning of the present invention.
1, outdoor fan shown in figure.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment.
As shown in figure 1, the fan linkage formula Defrost method of air-conditioning of the present invention, its step is as follows.
During operation of air conditioner, actual current value I of outdoor fan 1 is detected,
And the function of one current variable of proposition and time variable
Δ I/ Δ t=Kn,
Moment monitors Kn values, once finding after Kn >=defrosting warning value N, judges to need defrosting, unit to enter defrosting mode.
Wherein, N is 0.1-0.15, preferably 0.12.
Judge the function for needing to propose a frost thickness h and blower fan actual current I after defrosting
I=K1×h2+K2×h+c
Wherein, K1And K2For correction factor, c is the rated current of blower fan, different per Fans, and rated current is just different, one
As the rated current of blower fan have sign on the nameplate of fan electromotor；And K1For 0.1-0.2, preferably 0.14；K2Value 0.25-
0.5, preferably 0.37.
Conversed after frost thickness h according to actual current I, defrosting time is conversed according to h × Km=T, wherein, h unit
For mm, T unit is s, and Km is 300-500, preferably 360.
Further according to defrosting time defrosting.
Certainly, the present invention is not limited only to determine whether the defrosting time that defrosts and convert by actual current, due to room
The operating voltage of outer blower fan 1 is constant, therefore can also judge whether that needs defrost and convert using the actual power of outdoor fan 1
Defrosting time.
Claims (2)
1. a kind of fan linkage formula Defrost method of air-conditioning, its step includes, it is characterised in that：
During operation of air conditioner, actual current value I of outdoor fan (1) is detected,
And the function of one current variable of proposition and time variable
Δ I/ Δ t=Kn,
Moment monitors Kn values, and after discovery Kn >=defrosting warning value N, unit enters defrosting mode.
2. the fan linkage formula Defrost method of air-conditioning according to claim 1, it is characterised in that：
Propose the function of a frost thickness h and blower fan actual current I
I=K1×h2+K2×h+c
Wherein, K1And K2For correction factor, c is the rated current of blower fan；
Conversed after frost thickness h according to actual current I, defrosting time conversed according to h × Km=T,
Further according to defrosting time defrosting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087283.3A CN106594982B (en) | 2016-12-01 | 2016-12-01 | The fan linkage formula Defrost method of air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087283.3A CN106594982B (en) | 2016-12-01 | 2016-12-01 | The fan linkage formula Defrost method of air-conditioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594982A true CN106594982A (en) | 2017-04-26 |
| CN106594982B CN106594982B (en) | 2019-07-26 |
Family
ID=58594436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087283.3A Active CN106594982B (en) | 2016-12-01 | 2016-12-01 | The fan linkage formula Defrost method of air-conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594982B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981082A (en) * | 2018-07-18 | 2018-12-11 | 珠海格力电器股份有限公司 | Air-conditioning defrosting control method, control device and air-conditioning |
| CN109210840A (en) * | 2018-09-12 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of Air-Cooled Heat Pump Unit and its defrosting control method |
| CN110762747A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Defrosting control method of air conditioner |
| CN111692710A (en) * | 2020-06-24 | 2020-09-22 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
| CN114413416A (en) * | 2022-01-26 | 2022-04-29 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner defrosting control method, storage medium and multi-split air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186016A (en) * | 1990-11-06 | 1993-02-16 | Kabushiki Kaisha Toshiba | Defrosting control method and apparatus for 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 |
| CN103925675A (en) * | 2014-03-27 | 2014-07-16 | 广东美的制冷设备有限公司 | Air conditioner and judgment method and device for air conditioner in defrost mode |
| CN104456859A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN105980784A (en) * | 2014-03-28 | 2016-09-28 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
-
2016
- 2016-12-01 CN CN201611087283.3A patent/CN106594982B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186016A (en) * | 1990-11-06 | 1993-02-16 | Kabushiki Kaisha Toshiba | Defrosting control method and apparatus for 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 |
| CN104456859A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN103925675A (en) * | 2014-03-27 | 2014-07-16 | 广东美的制冷设备有限公司 | Air conditioner and judgment method and device for air conditioner in defrost mode |
| CN105980784A (en) * | 2014-03-28 | 2016-09-28 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762747A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Defrosting control method of air conditioner |
| CN110762747B (en) * | 2018-07-10 | 2021-08-10 | 青岛海尔空调电子有限公司 | Defrosting control method of air conditioner |
| CN108981082A (en) * | 2018-07-18 | 2018-12-11 | 珠海格力电器股份有限公司 | Air-conditioning defrosting control method, control device and air-conditioning |
| CN108981082B (en) * | 2018-07-18 | 2020-09-04 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN109210840A (en) * | 2018-09-12 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of Air-Cooled Heat Pump Unit and its defrosting control method |
| CN111692710A (en) * | 2020-06-24 | 2020-09-22 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
| CN111692710B (en) * | 2020-06-24 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
| CN114413416A (en) * | 2022-01-26 | 2022-04-29 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner defrosting control method, storage medium and multi-split air conditioner |
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| CN106594982B (en) | 2019-07-26 |
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