CN104121662B - A kind of air-conditioner and its defrosting control method and device - Google Patents
A kind of air-conditioner and its defrosting control method and device Download PDFInfo
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- CN104121662B CN104121662B CN201410307264.1A CN201410307264A CN104121662B CN 104121662 B CN104121662 B CN 104121662B CN 201410307264 A CN201410307264 A CN 201410307264A CN 104121662 B CN104121662 B CN 104121662B
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Abstract
The invention belongs to air conditioner controlling technology field, there is provided a kind of air-conditioner and its defrosting control method and device.The present invention is by when air-conditioner is converted to defrost pattern from heating mode, control indoor fan antiport, and open the PTC heating tubes in indoor apparatus of air conditioner, then when air-conditioner is in defrost pattern, control indoor fan antiport is so that the indoor air flows for being sucked are to evaporimeter, and while the room air sucked to indoor fan by control PTC heating tubes heats, so that the temperature of evaporator surface is raised, and heat can be carried to condenser from evaporimeter in cyclic process by refrigerant, and then the temperature of condenser is also accordingly raised, accelerate defrost speed, so that the evaporimeter and condenser spent time during defrost shortens, reduce the range of decrease of indoor temperature.
Description
Technical field
The invention belongs to air conditioner controlling technology field, more particularly to a kind of air-conditioner and its defrosting control method and device.
Background technology
At present, air-conditioner is widely used in various places as the equipment for adjusting indoor temperature.On north of China ground
Area, many Family needs adopt air-conditioner to lift indoor temperature to realize heating, and existing air-conditioner work in a heating mode
Need to perform a defrosting operation after making 30 minutes the condenser so that in evaporimeter and air-conditioner outdoor unit in indoor apparatus of air conditioner
On melts, so as to ensure that air-conditioner subsequently normally can run.However, in air-conditioner during defrost, needing
Blower fan in control indoor apparatus of air conditioner quits work, and the PTC heating tubes closed in indoor apparatus of air conditioner control cross valve power down, close
The blower fan of air-conditioner outdoor unit is closed, and after into defrost pattern, the one shorter time of time delay controls compressor start work again,
Whole defrost process is time-consuming longer, generally reaches 10 minutes or so, and air-conditioner is not perform heating mode during defrost
, so the reduction amplitude of indoor temperature can be made larger, have impact on the comfortableness of user.
The content of the invention
It is an object of the invention to provide a kind of defrosting control method of air-conditioner, it is intended to solve existing air-conditioner and changing
During frost because take it is longer cause the indoor temperature range of decrease larger problem.
The present invention is achieved in that a kind of defrosting control method of air-conditioner, when air-conditioner is in heating mode, empty
Indoor fan in tune indoor set is Positive work；When air-conditioner is converted to defrost pattern from heating mode, time delay is preset
Time interval controls compressor start work again；When air-conditioner is in defrost pattern, the compressor works on, and air-conditioning
Cross valve and outdoor fan in off-premises station quits work, and refrigerant is circulated between compressor, condenser and evaporimeter；
The defrosting control method is comprised the following steps：
When air-conditioner is converted to defrost pattern from heating mode, the indoor fan antiport is controlled, open air-conditioning
PTC heating tubes in indoor set；
When air-conditioner is in defrost pattern, the indoor fan antiport is controlled so that the Interior Space air-flow for being sucked
Move to the evaporimeter, and while the control PTC heating tubes are heated to the room air sucked by the indoor fan
Process.
Another object of the present invention is also resided in and provides a kind of defrosting control device of air-conditioner, including cross valve control mould
Block, outdoor fan control module and compressor control module；When air-conditioner is in heating mode, the interior in indoor apparatus of air conditioner
Blower fan is Positive work；When air-conditioner is converted to defrost pattern from heating mode, the compressor control module time delay is pre-
If time interval controls compressor start work again；When air-conditioner is in defrost pattern, the compressor control module control
The compressor works on, and the cross valve control module and the outdoor fan control module are controlled outside air-conditioning room respectively
Cross valve and outdoor fan in machine quits work, and refrigerant is circulated between compressor, condenser and evaporimeter；
The defrosting control device also includes indoor fan control module and heating tube control module；
When air-conditioner is converted to defrost pattern from heating mode, the indoor fan control module controls the indoor wind
Machine antiport, the heating tube control module open the PTC heating tubes in indoor apparatus of air conditioner；
When air-conditioner is in defrost pattern, the indoor fan control module control the indoor fan antiport with
Sucked indoor air flows are made to the evaporimeter, meanwhile, the heating tube control module controls the PTC heating tubes pair
The room air sucked by the indoor fan is heated.
A further object of the present invention also resides in a kind of air-conditioner including above-mentioned defrosting control device of offer.
The present invention controls indoor fan antiport by when air-conditioner is converted to defrost pattern from heating mode, and
Open indoor apparatus of air conditioner in PTC heating tubes, then air-conditioner be in defrost pattern when, control indoor fan antiport with
Sucked indoor air flows are made to evaporimeter, and while controls the room air sucked to indoor fan by PTC heating tubes
Heated, so that the temperature of evaporator surface is raised, and heat can be carried in cyclic process by refrigerant from evaporimeter
To condenser, and then the temperature of condenser is also accordingly raised, accelerate defrost speed, so that evaporimeter and condenser are being changed
During frost, the spent time shortens, and reduces the range of decrease of indoor temperature, improves the comfortableness that user uses air-conditioning.
Description of the drawings
Fig. 1 is the flowchart of the defrosting control method of air-conditioner provided in an embodiment of the present invention；
Fig. 2 is that the local of the indoor apparatus of air conditioner involved by the defrosting control method of air-conditioner provided in an embodiment of the present invention shows
It is intended to；
Fig. 3 is the structure chart of the defrosting control device of air-conditioner provided in an embodiment of the present invention；
Fig. 4 is the cut-away view of the indoor fan control module shown in Fig. 3.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
Air-conditioner involved by the embodiment of the present invention possesses part and existing air-conditioner identical operation principle, i.e.,：
When air-conditioner is in heating mode, the indoor fan in indoor apparatus of air conditioner is Positive work.It is cold due to needing during defrost
Matchmaker's persistent loop, so when air-conditioner is converted to defrost pattern from heating mode, time delay prefixed time interval controls compression again
Machine startup work, then compressor can obtain between Preset Time during air-conditioner is converted to defrost pattern from heating mode
Every buffering, subsequently restart work, involved prefixed time interval is specifically as follows 10 seconds or other more close herein
Suitable time value.When air-conditioner is in defrost pattern, compressor works on, and the cross valve in air-conditioner outdoor unit and outdoor
Blower fan quits work, and refrigerant is circulated between compressor, condenser and evaporimeter.
What Fig. 1 showed the defrosting control method of air-conditioner provided in an embodiment of the present invention realizes flow process, for the ease of saying
It is bright, part related to the present invention is illustrate only, details are as follows：
In step sl, when air-conditioner is converted to defrost pattern from heating mode, indoor fan antiport is controlled, is opened
Open the PTC heating tubes in indoor apparatus of air conditioner.
In step s 2, when air-conditioner is in defrost pattern, control indoor fan antiport is so that the room for being sucked
Interior air flow is to evaporimeter, and while the room air sucked to indoor fan by control PTC heating tubes heats.
Fig. 2 shows the partial schematic diagram of indoor apparatus of air conditioner, wherein, motor 1 and axial-flow fan 2 are the main of indoor fan
Device, for step S2, when air-conditioner is in defrost pattern, the motor 1 in indoor fan drives axial-flow fan 2 to invert (Fig. 2
In curved arrow direction for reversion), then room air is inhaled into from the air outlet of indoor apparatus of air conditioner, and room air is through PTC
Heating tube 3 is blown to evaporimeter 4 after heating, and the room air after heating realizes heat exchange with the relatively low evaporimeter 4 of temperature, then
The surface temperature of evaporimeter 4 can be raised immediately, it is assumed that now refrigerant is Q from the heat that evaporimeter 4 is taken awayO, condenser is by cold
Heat acquired in matchmaker is QK, and refrigerant does work as W in cyclic process, then according to law of conservation of energy：QK=QO+W。
During refrigerant circulation, W is to be similar to fixed value, so QOIt is bigger, then QKIt is bigger.Therefore, in the surface temperature of evaporimeter 4
During rising, QOCan increase, the defrost speed of evaporimeter 4 can be accelerated therewith, meanwhile, refrigerant carries heat Q from evaporimeter 4OTo condensation
Device, the heat Q that condenser is obtainedKCan also increase, then the defrost speed of condenser can also be accelerated, so as to improve the change of air-conditioner
White speed, shortens the defrost time, is conducive to air-conditioner after the defrost process of short time continuing to heat, and then reduces room
The range of decrease of interior temperature.
For existing air-conditioner, its related data involved by four defrost processes of experience is as shown in the table：
| Number of times | Indoor temperature (before defrost) | Evaporator temperature | The defrost time | Indoor temperature (after defrost) |
| For the first time | 20℃ | 35℃ | 9 points 50 seconds | 15.5℃ |
| Second | 20℃ | 34.5℃ | 10 points | 15.2℃ |
| For the third time | 20℃ | 35℃ | 9 points 55 seconds | 15.5℃ |
| 4th time | 20℃ | 35.5℃ | 9 points 40 seconds | 16℃ |
| Mean value | 20℃ | 35℃ | 9 points 51 seconds | 15.5℃ |
It is for the defrosting control method for providing according to embodiments of the present invention is carried out to air-conditioner after four defrosting operations, involved
And related data it is as shown in the table：
| Number of times | Indoor temperature (before defrost) | Evaporator temperature | The defrost time | Indoor temperature (after defrost) |
| For the first time | 20℃ | 35℃ | 5 points 30 seconds | 18℃ |
| Second | 20℃ | 34.5℃ | 5 points 20 seconds | 17.8℃ |
| For the third time | 20℃ | 35℃ | 5 points 20 seconds | 18.1℃ |
| 4th time | 20℃ | 35.5℃ | 5 points 30 seconds | 18.2℃ |
| Mean value | 20℃ | 35℃ | 5 points 25 seconds | 18℃ |
As can be seen that relative to existing air-conditioner, defrost control provided in an embodiment of the present invention from above-mentioned two form
Method processed can make the average defrost time shorten 4 points 26 seconds, and the indoor temperature after defrost also averagely improves 2.5 DEG C, therefore
Show that defrost speed is accelerated, and the range of decrease of indoor temperature has also reduced.
Fig. 3 shows the structure of the defrosting control device of air-conditioner provided in an embodiment of the present invention, for convenience of description, only
Part related to the present invention is shown, details are as follows：
Defrosting control device includes cross valve control module 100, outdoor fan control module 200 and compressor control module
300.When air-conditioner is in heating mode, the indoor fan in indoor apparatus of air conditioner is Positive work.During defrost
Refrigerant persistent loop is needed, so when air-conditioner is converted to defrost pattern from heating mode, 300 time delay of compressor control module
Prefixed time interval controls compressor start work again, then compressor can be converted to defrost pattern from heating mode in air-conditioner
During obtain the buffering of prefixed time interval, subsequently restart work, involved prefixed time interval specifically may be used herein
Think 10 seconds or other more suitable time values.When air-conditioner is in defrost pattern, compressor control module 300 is controlled
Compressor works on, and cross valve control module 100 and outdoor fan control module 200 are controlled in air-conditioner outdoor unit respectively
Cross valve and outdoor fan quit work, and refrigerant is circulated between compressor, condenser and evaporimeter.
Defrosting control device also includes indoor fan control module 400 and heating tube control module 500.
When air-conditioner is converted to defrost pattern from heating mode, the control indoor fan of indoor fan control module 400 is anti-
To operating, heating tube control module 500 opens the PTC heating tubes in indoor apparatus of air conditioner.
When air-conditioner is in defrost pattern, indoor fan control module 400 controls indoor fan antiport so that institute
The indoor air flows of suction to evaporimeter, meanwhile, heating tube control module 500 control PTC heating tubes indoor fan is inhaled
The room air for entering is heated.
Wherein, in actual applications, cross valve control module 100, outdoor fan control module 200, compressor control mould
Block 300, indoor fan control module 400 and heating tube control module 500 obtain power supply from the electric-controlled plate 600 of air-conditioner.Four
Port valve control module 100, outdoor fan control module 200 and compressor control module 300 can merge and be built in outside air-conditioning room
In the main control module of machine, cross valve, outdoor fan and compressor are controlled by the controller in the main control module.Indoor wind
Machine control module 400 and heating tube control module 500 are built in indoor apparatus of air conditioner.
For indoor fan control module 400, as shown in figure 4, its can include dc source 401, main control chip 402 and
SPM (IPM, Intelligent Power Module) 403, dc source 401 are main control chip 402 and intelligence
Power model 403 is powered, and main control chip 402 exports six road PWM drive signals and timing control signal control SPM
Upper and lower bridge arm switching tube in 403 realizes make-break operation according to corresponding sequential, then SPM 403 can be by DC voltage
Inversion is three-phase alternating voltage (U, V, W) the motor rotation in driving indoor fan, and (i.e. indoor fan turns for the steering of motor
To) determined by the timing control signal exported by main control chip.
For heating tube control module 500, its PTC heating tube control circuit specifically commonly used in air-conditioner, which is used for
Control being turned on and off for PTC heating tubes.
When air-conditioner is in defrost pattern, the motor 1 in the control indoor fan of indoor fan control module 400 drives and passes through
Flow fan 2 inverts (the curved arrow direction in Fig. 2 is reversion), then room air is inhaled into from the air outlet of indoor apparatus of air conditioner,
The control PTC of heating tube control module 500 heating tubes 3 work, and room air is blown to evaporimeter after the heating of PTC heating tubes 3
4, the room air after heating realizes heat exchange with the relatively low evaporimeter 4 of temperature, then the surface temperature of evaporimeter 4 can be risen immediately
It is high, it is assumed that now refrigerant is Q from the heat that evaporimeter 4 is taken awayO, condenser is Q by the heat acquired in refrigerantK, and refrigerant exists
Acting in cyclic process is W, then according to law of conservation of energy：QK=QO+W.During refrigerant circulation, W is to be similar to admittedly
Definite value, so QOIt is bigger, then QKIt is bigger.Therefore, when the surface temperature of evaporimeter 4 is raised, QOCan increase, the defrost of evaporimeter 4
Speed can be accelerated therewith, meanwhile, refrigerant carries heat Q from evaporimeter 4OTo condenser, the heat Q that condenser is obtainedKCan also increase
Greatly, then the defrost speed of condenser can also be accelerated, and so as to improve the defrost speed of air-conditioner, shorten the defrost time, favorably
In air-conditioner after the defrost process of short time continuing to heat, and then reduce the range of decrease of indoor temperature.
Based on application of the above-mentioned defrosting control device in air-conditioner, the embodiment of the present invention additionally provides a kind of including upper
State the air-conditioner of defrosting control device.
The embodiment of the present invention is by when air-conditioner is converted to defrost pattern from heating mode, control indoor fan is reversely transported
Turn, and open the PTC heating tubes in indoor apparatus of air conditioner, then when air-conditioner is in defrost pattern, control indoor fan is reverse
Operating is so that the indoor air flows for being sucked are to evaporimeter, and while control the room sucked to indoor fan by PTC heating tubes
Interior air is heated, so that the temperature of evaporator surface is raised, and refrigerant can be from evaporimeter by heat in cyclic process
Amount is carried to condenser, and then the temperature of condenser is also accordingly raised, and accelerates defrost speed, so that evaporimeter and condensation
The device spent time during defrost shortens, and reduces the range of decrease of indoor temperature, improves user and uses the comfortable of air-conditioning
Property.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of defrosting control method of air-conditioner, when air-conditioner is in heating mode, the indoor fan in indoor apparatus of air conditioner
It is Positive work；When air-conditioner is converted to defrost pattern from heating mode, time delay prefixed time interval controls compressor again
Start work；When air-conditioner is in defrost pattern, the compressor works on, and the cross valve in air-conditioner outdoor unit and room
Outer blower fan quits work, and refrigerant is circulated between compressor, condenser and evaporimeter；Characterized in that, the defrost
Control method is comprised the following steps：
When air-conditioner is converted to defrost pattern from heating mode, the indoor fan antiport is controlled, opened in air-conditioning room
PTC heating tubes in machine；
When air-conditioner is in defrost pattern, control the indoor fan antiport so that the indoor air flows for being sucked extremely
The evaporimeter, and while the control PTC heating tubes heat to the room air sucked by the indoor fan；
Under the antiport effect of the indoor fan so that the indoor air flows after the PTC heating tubes heating described in are extremely
The evaporimeter.
2. defrosting control method as claimed in claim 1, it is characterised in that the prefixed time interval is 10 seconds.
3. a kind of defrosting control device of air-conditioner, including cross valve control module, outdoor fan control module and compressor control
Molding block；When air-conditioner is in heating mode, the indoor fan in indoor apparatus of air conditioner is Positive work；In air-conditioner from system
When heat pattern is converted to defrost pattern, the compressor control module time delay prefixed time interval controls compressor start work again
Make；When air-conditioner is in defrost pattern, the compressor control module controls the compressor and works on, and the four-way
Valve control module and the outdoor fan control module control the cross valve in air-conditioner outdoor unit respectively and outdoor fan stops work
Make, refrigerant is circulated between compressor, condenser and evaporimeter；It is characterized in that：
The defrosting control device also includes indoor fan control module and heating tube control module；
When air-conditioner is converted to defrost pattern from heating mode, it is anti-that the indoor fan control module controls the indoor fan
To operating, the heating tube control module opens the PTC heating tubes in indoor apparatus of air conditioner；
When air-conditioner is in defrost pattern, the indoor fan control module controls the indoor fan antiport so that institute
The indoor air flows of suction to the evaporimeter, meanwhile, the heating tube control module controls the PTC heating tubes to described
The room air sucked by indoor fan is heated；
Under the antiport effect of the indoor fan so that the indoor air flows after the PTC heating tubes heating described in are extremely
The evaporimeter.
4. defrosting control device as claimed in claim 3, it is characterised in that the prefixed time interval is 10 seconds.
5. a kind of air-conditioner, it is characterised in that the air-conditioner includes the defrosting control device as described in claim 3 or 4.
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| CN201410307264.1A CN104121662B (en) | 2014-06-30 | 2014-06-30 | A kind of air-conditioner and its defrosting control method and device |
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| CN201410307264.1A CN104121662B (en) | 2014-06-30 | 2014-06-30 | A kind of air-conditioner and its defrosting control method and device |
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| CN104121662A CN104121662A (en) | 2014-10-29 |
| CN104121662B true CN104121662B (en) | 2017-03-29 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848738B (en) * | 2015-04-22 | 2019-03-19 | 珠海格力电器股份有限公司 | Cleaning method and device for indoor heat exchanger of air conditioner |
| CN104819610B (en) * | 2015-04-30 | 2017-11-07 | 广东美的制冷设备有限公司 | air conditioner defrosting control device and method |
| CN104791962A (en) * | 2015-05-05 | 2015-07-22 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner system |
| CN106524389B (en) * | 2015-09-15 | 2020-11-10 | 上海海立电器有限公司 | Air conditioner defrosting method and air conditioner |
| CN106091296A (en) * | 2016-08-02 | 2016-11-09 | 珠海格力电器股份有限公司 | Control device for rapidly quitting anti-freezing protection, air conditioning system and control method |
| CN106369740B (en) * | 2016-08-23 | 2019-11-08 | 广东美的制冷设备有限公司 | The self-cleaning control method and device of A/C evaporator |
| CN106642325B (en) * | 2016-11-30 | 2019-05-31 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its heating start-up control method |
| CN106766007B (en) * | 2017-02-21 | 2020-02-21 | 青岛海尔空调器有限总公司 | Air conditioner and method for improving comfort degree of air conditioner in defrosting process |
| CN107750066B (en) * | 2017-11-08 | 2020-05-26 | 合肥美菱物联科技有限公司 | Defrosting device and method |
| CN108151232B (en) * | 2017-12-25 | 2021-05-18 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner and computer readable storage medium |
| CN110243058A (en) * | 2019-06-14 | 2019-09-17 | 湖南省宝满科技开发有限公司 | A kind of the defrosting processing method and system of central air-conditioning outdoor unit |
| CN110332654B (en) * | 2019-07-11 | 2020-07-24 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN113566465A (en) * | 2021-06-30 | 2021-10-29 | 重庆海尔空调器有限公司 | Defrosting structure and air conditioner |
| CN115479407A (en) * | 2022-08-17 | 2022-12-16 | 北京金茂绿建科技有限公司 | Preparation method of air source heat pump system |
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| JP2001260641A (en) * | 2000-03-21 | 2001-09-26 | Sanyo Electric Co Ltd | On-vehicle air conditioner |
| CN101430127A (en) * | 2008-11-27 | 2009-05-13 | 四川长虹电器股份有限公司 | Air conditioner control method in indoor heating state |
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| JP2001260641A (en) * | 2000-03-21 | 2001-09-26 | Sanyo Electric Co Ltd | On-vehicle air conditioner |
| CN101430127A (en) * | 2008-11-27 | 2009-05-13 | 四川长虹电器股份有限公司 | Air conditioner control method in indoor heating state |
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