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CN103982976A - Air conditioner defrosting control method and air conditioner - Google Patents

Air conditioner defrosting control method and air conditioner Download PDF

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Publication number
CN103982976A
CN103982976A CN201410164187.9A CN201410164187A CN103982976A CN 103982976 A CN103982976 A CN 103982976A CN 201410164187 A CN201410164187 A CN 201410164187A CN 103982976 A CN103982976 A CN 103982976A
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China
Prior art keywords
conditioner
air
heat tape
temperature
defrost
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Granted
Application number
CN201410164187.9A
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Chinese (zh)
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CN103982976B (en
Inventor
林竹
丁斐
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GD Midea Air Conditioning Equipment Co Ltd
Guangdong Midea Group Wuhu Air Conditioning Equipment Co Ltd
Original Assignee
Guangdong Midea Refrigeration Equipment Co Ltd
Guangdong Midea Group Wuhu Air Conditioning Equipment Co Ltd
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Priority to CN201410164187.9A priority Critical patent/CN103982976B/en
Publication of CN103982976A publication Critical patent/CN103982976A/en
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Abstract

The invention discloses an air conditioner defrosting control method and an air conditioner. The method comprises the following steps of after the air conditioner starts the heating function, monitoring the temperature of an output pipe of a condenser of an outdoor unit; when the temperature of the output pipe reaches the setting temperature, starting an electric heating belt on a chassis of the outdoor unit, and enabling the air conditioner to enter the preheating stage; controlling the air conditioner to enter the preset defrosting stage, maintaining the electric heating belt to the open state, and maintaining the time T2; when the preset defrosting stage of the air conditioner is finished, enabling the electric heating belt to continue to maintain the working time T3, and closing the electric heating belt. The method has the advantage that by judging the temperature of the output pipe of the condenser of the outdoor unit, the opening time of the electric heating belt is divided into three time periods, namely pre-defrosting, defrosting and post-defrosting of the air conditioner, and the electric heating belt with certain power is combined by the control method, so a more energy-saving effect of the air conditioner is realized, the ices of the chassis can be thoroughly melted and cleaned, and then the defrosting effect of the outdoor unit of the air conditioner is improved.

Description

Air-conditioner defrosting control method and air-conditioner
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of air-conditioner defrosting control method and air-conditioner.
Background technology
Conventionally when using heat pump air conditioner to heat, when outdoor environment temperature is lower, relative humidity is when larger, the condenser of air-conditioner outdoor unit is very easy to frosting, causes indoor heating effect very poor, therefore need the defrost of intermittent, to reach, improve heating effect indoor under low temperature and high humidity environment.
When condenser is carried out to defrost, on the one hand, the consideration based on device security, the osculum of air conditioner outdoor unit chassis can not be opened too much, too much; On the other hand, some harsh weather as conditions such as heavy snow under, the aqueous water producing after defrost solidifies again icing very soon, slowly stops up the osculum on chassis, thereby causes that chassis freezes, and finally causes defrost unclean.
For solving problems, adopt more scheme to be at present: on chassis, to arrange the heat tape of smaller power, according to outdoor temperature, determine to open or stop heat tape.But this traditional control method, may occur that user's heat tape in the situation that not using air-conditioning opens, and increases thus the standby power of air-conditioning, has both wasted electric energy, can not guarantee thoroughly to melt again the ice cube on chassis.
Summary of the invention
Main purpose of the present invention is to provide a kind of air-conditioner defrosting control method and air-conditioner, is intended to improve the defrosting effect of air-conditioner outdoor unit, reduces air-conditioner power consumption.
In order to achieve the above object, the present invention proposes a kind of air-conditioner defrosting control method, comprises the following steps:
At air-conditioner, open after heat-production functions the efferent duct temperature of monitoring outdoor condenser;
When described efferent duct temperature reaches design temperature, open the heat tape on bottom plate of outdoor unit, make air-conditioner enter warm-up phase, the described warm-up phase duration is T1, and described design temperature is t, t=t0+ △ t, wherein, when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value;
Control air-conditioner and enter the predetermined defrost stage, maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2;
After the predetermined defrost of the air-conditioner stage finishes, make heat tape continue maintenance work time T 3, close afterwards heat tape.
Preferably, T1 is 10~20 minutes.
Preferably, T2 is 3~5 minutes.
Preferably, T3 is 5~10 minutes.
Preferably, △ t is 2~4 ℃.
Preferably, when air-conditioner shutdown or standby, heat tape keeps closed condition.
The present invention also proposes a kind of air-conditioner, comprise off-premises station and controller, described bottom plate of outdoor unit is provided with heat tape, also comprise temperature-sensitive bag, described temperature-sensitive bag is arranged on the efferent duct of described outdoor condenser, for opening after heat-production functions at air-conditioner, the efferent duct temperature of monitoring outdoor condenser; Described controller, for when described efferent duct temperature reaches design temperature, is opened the heat tape on bottom plate of outdoor unit, makes air-conditioner enter warm-up phase, and the described warm-up phase duration is T1; Control afterwards air-conditioner and enter the predetermined defrost stage, maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2; And after the predetermined defrost of the air-conditioner stage finishes, make heat tape continue maintenance work time T 3, close afterwards heat tape; Described design temperature is t, t=t0+ △ t, wherein, and when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value.
Preferably, T1 is 10~20 minutes; T2 is 3~5 minutes; T3 is 5~10 minutes; △ t is 2~4 ℃.
A kind of air-conditioner defrosting control method and air-conditioner that the present invention proposes, by judgement outdoor condenser efferent duct temperature, the opening time of heat tape is divided into three time periods before air-conditioner defrost, in defrost, after defrost, heat tape by this control method in conjunction with certain power, can realize the more energy-conservation object of air-conditioner, also the ice cube on chassis can be melted more thoroughly and emptying simultaneously, thus the defrosting effect of raising air-conditioner outdoor unit.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air-conditioner defrosting control method of the present invention preferred embodiment;
Fig. 2 is the opening time schematic diagram of heat tape on chassis of outdoor unit of air conditioner of the present invention.
In order to make technical scheme of the present invention clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
The specific embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, preferred embodiment of the present invention proposes a kind of air-conditioner defrosting control method, comprising:
Step S101, opens after heat-production functions at air-conditioner, the efferent duct temperature of monitoring outdoor condenser;
The present embodiment is provided with heat tape on bottom plate of outdoor unit, is provided with temperature-sensitive bag simultaneously on the efferent duct of outdoor condenser, and this temperature-sensitive bag, for opening after heat-production functions at air-conditioner, is monitored the efferent duct temperature of outdoor condenser.
Because existing heat tape control method is, on chassis, arrange the heat tape of smaller power, according to outdoor temperature, determine to open or stop heat tape, its control method underaction is accurate, may occur that user's heat tape in the situation that not using air-conditioning opens, increase thus the standby power of air-conditioning, both wasted electric energy, can not guarantee thoroughly to melt again the ice cube on chassis.
The present embodiment is the efferent duct temperature according to outdoor condenser, control the unlatching of ribbon heater or close, and the opening time of heat tape is divided into three time periods (T1 in corresponding diagram 2, T2, T3) before air-conditioner defrost, in defrost, after defrost, can save air-conditioner energy consumption, also the ice cube on chassis can be melted more thoroughly and emptying simultaneously.
Wherein, for the selection of heat tape, can select according to the outdoor conditions of user region the heat tape of different capacity, as temperate zone, can select the heat tape of smaller power, the heat tape of relatively high power can be selected in frigid zone.
When air-conditioner shutdown or standby, heat tape keeps closed condition, to save electric energy.At air-conditioner, open after heat-production functions the efferent duct temperature of monitoring outdoor condenser.
Step S102, when described efferent duct temperature reaches design temperature, opens the heat tape on bottom plate of outdoor unit, makes air-conditioner enter the warm-up phase before defrost.
When temperature-sensitive bag monitors efferent duct temperature and reaches design temperature, air-conditioner controller is opened the heat tape on bottom plate of outdoor unit, makes air-conditioner enter the warm-up phase before defrost.
Conventionally, air-conditioner is provided with the condenser efferent duct temperature while starting defrost according to preset program, when condenser efferent duct temperature reaches setting value (such as-a ℃), and beginning defrost.
The present embodiment, when efferent duct temperature reaches design temperature, is opened the heat tape on bottom plate of outdoor unit, and this design temperature is slightly larger than the condenser efferent duct temperature of the beginning defrost of air-conditioner preset program setting, if design temperature is t, t=t0+ △ t, wherein, when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value, as a kind of better embodiment, 2~4 ℃ of △ t values, if t0=-a ℃,, t=-a+ (2~4) ℃.
When described efferent duct temperature reaches design temperature, open the heat tape on bottom plate of outdoor unit, make air-conditioner enter the warm-up phase before defrost, the described warm-up phase duration is T1, T1 can value 10~20 minutes.
By warm-up phase, start to melt near ice cube or frost chassis, to guarantee the unimpeded of osculum.
Step S103, controls air-conditioner and enters the predetermined defrost stage, and maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2;
Wherein, predetermined defrost stage duration T 2 can be 3~5 minutes.
From defrost, start, to the T2 stage finishing, to keep the opening of heat tape, to avoid the frost on condenser again to solidify after thawing, cause frost to be trapped on the chassis of off-premises station.
Step S104, after the predetermined defrost of the air-conditioner stage finishes, makes heat tape continue maintenance work time T 3, closes afterwards heat tape.
Wherein, T3 can value 5~10 minutes.
After defrost finishes, in order to guarantee that the aqueous water that air-conditioner outdoor unit generates when the defrost thoroughly discharges, chassis heat tape maintenance work, after 5~10 minutes, completes the T3 stage, then closes heat tape.
By above control method, not only can reduce the standby power of air-conditioner, realize the object of energy-saving and emission-reduction, and can guarantee that the water on bottom plate of outdoor unit discharges in time, avoid that to stop up the defrost cause unclean because of osculum, finally cause the poor problem of heating effect.
In addition, the present invention also proposes a kind of air-conditioner, this air-conditioner comprises the controller of indoor set, off-premises station and control indoor set and off-premises station, described bottom plate of outdoor unit is provided with heat tape, on the efferent duct of outdoor condenser, be provided with temperature-sensitive bag, for opening after heat-production functions at air-conditioner, the efferent duct temperature of monitoring outdoor condenser; Described controller, for when described efferent duct temperature reaches design temperature, is opened the heat tape on bottom plate of outdoor unit, makes air-conditioner enter the warm-up phase before defrost, and the described warm-up phase duration is T1; Control afterwards air-conditioner and enter the predetermined defrost stage, maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2; And after the predetermined defrost of the air-conditioner stage finishes, make heat tape continue maintenance work time T 3, close afterwards heat tape; Described design temperature is t, t=t0+ △ t, wherein, and when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value.
As a kind of embodiment, T1 is 10~20 minutes; T2 is 3~5 minutes; T3 is 5~10 minutes; △ t is 2~4 ℃.
The present embodiment is controlled the principle that realizes defrosting to heat tape, please refer to above-described embodiment, does not repeat them here.
Embodiment of the present invention air-conditioner defrosting control method and air-conditioner, by judgement outdoor condenser efferent duct temperature, the opening time of heat tape is divided into three time periods before air-conditioner defrost, in defrost, after defrost, heat tape by this control method in conjunction with certain power, can realize the more energy-conservation object of air-conditioner, also the ice cube on chassis can be melted more thoroughly and emptying simultaneously, thus the defrosting effect of raising air-conditioner outdoor unit.
Above are only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or flow process conversion that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (8)

1. an air-conditioner defrosting control method, is characterized in that, comprises the following steps:
At air-conditioner, open after heat-production functions the efferent duct temperature of monitoring outdoor condenser;
When described efferent duct temperature reaches design temperature, open the heat tape on bottom plate of outdoor unit, make air-conditioner enter warm-up phase, the described warm-up phase duration is T1, and described design temperature is t, t=t0+ △ t, wherein, when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value;
Control air-conditioner and enter the predetermined defrost stage, maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2;
After the predetermined defrost of the air-conditioner stage finishes, make heat tape continue maintenance work time T 3, close afterwards heat tape.
2. method according to claim 1, is characterized in that, T1 is 10~20 minutes.
3. method according to claim 1, is characterized in that, T2 is 3~5 minutes.
4. method according to claim 1, is characterized in that, T3 is 5~10 minutes.
5. method according to claim 1, is characterized in that, △ t is 2~4 ℃.
6. according to the method described in any one in claim 1-5, it is characterized in that, when air-conditioner shutdown or standby, heat tape keeps closed condition.
7. an air-conditioner, comprise off-premises station and controller, described bottom plate of outdoor unit is provided with heat tape, it is characterized in that, also comprise temperature-sensitive bag, described temperature-sensitive bag is arranged on the efferent duct of described outdoor condenser, for opening after heat-production functions at air-conditioner, and the efferent duct temperature of monitoring outdoor condenser; Described controller, for when described efferent duct temperature reaches design temperature, is opened the heat tape on bottom plate of outdoor unit, makes air-conditioner enter warm-up phase, and the described warm-up phase duration is T1; Control afterwards air-conditioner and enter the predetermined defrost stage, maintenance heat tape is opening, and the described predetermined duration in defrost stage is T2; And after the predetermined defrost of the air-conditioner stage finishes, make heat tape continue maintenance work time T 3, close afterwards heat tape; Described design temperature is t, t=t0+ △ t, wherein, and when t0 is the predetermined beginning of air-conditioner defrost, the efferent duct temperature of outdoor condenser, △ t is greater than 0 setting value.
8. according to right, want the air-conditioner described in 7, it is characterized in that, T1 is 10~20 minutes; T2 is 3~5 minutes; T3 is 5~10 minutes; △ t is 2~4 ℃.
CN201410164187.9A 2014-04-22 2014-04-22 Conditioner defrosting control method and conditioner Active CN103982976B (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534754A (en) * 2014-11-28 2015-04-22 广东美的制冷设备有限公司 Mobile air conditioner and frost removal control method thereof
CN105202724A (en) * 2015-10-21 2015-12-30 Tcl空调器(中山)有限公司 Air conditioner control method, air conditioner control device and air conditioner
CN106352442A (en) * 2016-09-30 2017-01-25 广东美的制冷设备有限公司 Snow removal control method of air conditioner outdoor unit
CN106352443A (en) * 2016-10-25 2017-01-25 美的集团武汉制冷设备有限公司 Base plate structure, air conditioner and defrosting control method for air conditioner
CN106642595A (en) * 2017-01-10 2017-05-10 美的集团武汉制冷设备有限公司 Air conditioner and defrosting control method thereof
CN106705302A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Air conditioner, defrosting control method and defrosting control system
CN106765950A (en) * 2016-12-23 2017-05-31 广东美的暖通设备有限公司 The control method of air-conditioning heating system, control device and air-conditioner
CN109682018A (en) * 2018-12-27 2019-04-26 广东美的暖通设备有限公司 The control method of heating system, the control device of heating system and air conditioner
CN109682017A (en) * 2018-12-27 2019-04-26 广东美的暖通设备有限公司 The control method and its device of air conditioner heating system
CN109708269A (en) * 2019-02-25 2019-05-03 珠海格力电器股份有限公司 air conditioner and electric heater control method, device and equipment thereof
CN109869869A (en) * 2018-12-29 2019-06-11 珠海格力电器股份有限公司 Heating control method for chassis of air conditioner external unit
CN110440415A (en) * 2019-08-21 2019-11-12 珠海格力电器股份有限公司 Air conditioner, defrosting control method and device thereof, and computer readable storage medium
CN110986274A (en) * 2019-11-21 2020-04-10 珠海格力电器股份有限公司 Control method for preventing incomplete defrosting of electric heater, computer readable storage medium and air conditioner
CN111059699A (en) * 2019-12-12 2020-04-24 珠海格力电器股份有限公司 Electric heating belt control method and device, storage medium and air conditioner
CN111457480A (en) * 2020-04-20 2020-07-28 宁波奥克斯电气股份有限公司 Chassis deicing control method and device, air conditioner and storage medium
CN112066623A (en) * 2020-08-27 2020-12-11 西安交通大学 Heating power variable defrosting device of air-cooled refrigerator and control method
CN113357782A (en) * 2021-06-07 2021-09-07 青岛海尔空调器有限总公司 Air conditioner control method, device and equipment
CN114636223A (en) * 2022-03-21 2022-06-17 青岛海尔空调器有限总公司 Defrosting and heating control method, system, equipment and storage medium
US11788758B2 (en) 2018-12-27 2023-10-17 Hefei Midea Heating & Ventilating Equipment Co., Ltd. Air conditioner, and control method and device for heating system thereof

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CN101137876A (en) * 2005-03-30 2008-03-05 罗伯特绍控制器公司 Refrigeration and defrost control system
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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534754A (en) * 2014-11-28 2015-04-22 广东美的制冷设备有限公司 Mobile air conditioner and frost removal control method thereof
CN105202724B (en) * 2015-10-21 2018-11-16 Tcl空调器(中山)有限公司 Air-conditioner control method, air conditioner controlling device and air conditioner
CN105202724A (en) * 2015-10-21 2015-12-30 Tcl空调器(中山)有限公司 Air conditioner control method, air conditioner control device and air conditioner
CN106352442A (en) * 2016-09-30 2017-01-25 广东美的制冷设备有限公司 Snow removal control method of air conditioner outdoor unit
CN106352443A (en) * 2016-10-25 2017-01-25 美的集团武汉制冷设备有限公司 Base plate structure, air conditioner and defrosting control method for air conditioner
CN106765950A (en) * 2016-12-23 2017-05-31 广东美的暖通设备有限公司 The control method of air-conditioning heating system, control device and air-conditioner
WO2018113154A1 (en) * 2016-12-23 2018-06-28 广东美的暖通设备有限公司 Control method and control apparatus for air conditioner heating system, and air conditioner
CN106705302A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Air conditioner, defrosting control method and defrosting control system
CN106642595A (en) * 2017-01-10 2017-05-10 美的集团武汉制冷设备有限公司 Air conditioner and defrosting control method thereof
CN106705302B (en) * 2017-01-10 2019-07-19 美的集团武汉制冷设备有限公司 Air conditioner, defrosting control method and defrosting control system
CN109682018B (en) * 2018-12-27 2020-06-30 广东美的暖通设备有限公司 Control method and control device of heating system and air conditioner
CN109682018A (en) * 2018-12-27 2019-04-26 广东美的暖通设备有限公司 The control method of heating system, the control device of heating system and air conditioner
CN109682017A (en) * 2018-12-27 2019-04-26 广东美的暖通设备有限公司 The control method and its device of air conditioner heating system
US11788758B2 (en) 2018-12-27 2023-10-17 Hefei Midea Heating & Ventilating Equipment Co., Ltd. Air conditioner, and control method and device for heating system thereof
CN109869869A (en) * 2018-12-29 2019-06-11 珠海格力电器股份有限公司 Heating control method for chassis of air conditioner external unit
CN109708269A (en) * 2019-02-25 2019-05-03 珠海格力电器股份有限公司 air conditioner and electric heater control method, device and equipment thereof
CN109708269B (en) * 2019-02-25 2023-11-24 珠海格力电器股份有限公司 Air conditioner and electric heater control method, device and equipment thereof
CN110440415A (en) * 2019-08-21 2019-11-12 珠海格力电器股份有限公司 Air conditioner, defrosting control method and device thereof, and computer readable storage medium
CN110986274A (en) * 2019-11-21 2020-04-10 珠海格力电器股份有限公司 Control method for preventing incomplete defrosting of electric heater, computer readable storage medium and air conditioner
CN111059699A (en) * 2019-12-12 2020-04-24 珠海格力电器股份有限公司 Electric heating belt control method and device, storage medium and air conditioner
CN111457480A (en) * 2020-04-20 2020-07-28 宁波奥克斯电气股份有限公司 Chassis deicing control method and device, air conditioner and storage medium
CN112066623A (en) * 2020-08-27 2020-12-11 西安交通大学 Heating power variable defrosting device of air-cooled refrigerator and control method
CN112066623B (en) * 2020-08-27 2021-07-27 西安交通大学 Heating power variable defrosting device of air-cooled refrigerator and control method
CN113357782A (en) * 2021-06-07 2021-09-07 青岛海尔空调器有限总公司 Air conditioner control method, device and equipment
CN113357782B (en) * 2021-06-07 2023-01-13 青岛海尔空调器有限总公司 Air conditioner control method, device and equipment
CN114636223A (en) * 2022-03-21 2022-06-17 青岛海尔空调器有限总公司 Defrosting and heating control method, system, equipment and storage medium

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