CN104819610B - air conditioner defrosting control device and method - Google Patents
air conditioner defrosting control device and method Download PDFInfo
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- CN104819610B CN104819610B CN201510218396.1A CN201510218396A CN104819610B CN 104819610 B CN104819610 B CN 104819610B CN 201510218396 A CN201510218396 A CN 201510218396A CN 104819610 B CN104819610 B CN 104819610B
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- air conditioner
- defrosting control
- defrost
- outdoor
- control device
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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
- F24F11/62—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
-
- 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
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to field of air conditioning, a kind of air conditioner defrosting control device and method are disclosed, the air conditioner includes outdoor fan, and the air conditioner defrosting control device includes：Controller, for performing following steps：Judge whether the air conditioner enters the defrost stage；And if the air conditioner enters the defrost stage, control the outdoor fan reversion to carry out heat convection.The defrost speed of outdoor heat exchanger is accelerated by technical scheme and then the service efficiency of air conditioner is improved, it is to avoid the discomfort for causing user to use, and improves defrost degree, low-temperature heating capacity is improved, and then improve seasonal energy efficiency.
Description
Technical field
The present invention relates to field of air conditioning, in particular it relates to a kind of air conditioner defrosting control device and method.
Background technology
In the case where temperature is relatively low, user would generally set air conditioner to be heated to improve indoor temperature, but with
Air conditioner heat-production run time it is elongated, the situation of frosting will occurs in condenser (outdoor heat exchanger), and the time is longer, and frost will
Tie thicker.If not taking defrosting control, it will have a strong impact on the heating effect of air conditioner, so that significantly decay is heated
Ability, seriously, lengthening over time, it is more that frost is accumulated, and may result in and breaks fan, causes the damage of air conditioner
It is bad, bring loss economically to user.
The air conditioner defrosting control of prior art needs the longer defrost time for the serious air conditioner of frosting, and defrost
The service efficiency of air conditioner will greatly drop more than 10 minutes in the time, be made troubles to user；And the air conditioner of prior art
Defrosting control can possibly even have the sordid situation of defrost.
The content of the invention
It is an object of the invention to provide a kind of air conditioner defrosting control device and method, the air conditioner defrosting control device energy
Enough accelerate the thawing speed of frosting and the thawing degree of frosting can be improved, and then improve the service efficiency of air conditioner, it is to avoid
Cause the discomfort that user uses.
To achieve these goals, the present invention provides a kind of air conditioner defrosting control device, and the air conditioner includes outdoor wind
Machine, the air conditioner defrosting control device includes：Controller, for performing following steps：Judge whether the air conditioner enters
The defrost stage；And if the air conditioner enters the defrost stage, control the outdoor fan reversion to carry out heat convection.
Preferably, the speed reversal of the outdoor fan is selected from 350 revs/min to 900 revs/min.
Preferably, the air conditioner includes outdoor heat exchanger, and the controller is additionally operable in following condition is met extremely
The air conditioner is controlled to enter the defrost stage during few one：The detected outdoor heat exchanger within the default low temperature continuous time
Temperature remains less than default initial temperature；And the air conditioner reaches default run time with heating mode operation.
Preferably, if the temperature of outdoor heat exchanger detected in preset time is kept equal to default stop
Only temperature, then the controller control the outdoor fan to stop reversion, the air conditioner exits the defrost stage.
Preferably, the air conditioner defrosting control device also includes：Temperature detector, is installed on the outdoor heat exchanger
On, the temperature for detecting the outdoor heat exchanger.
Preferably, the temperature detector is installed on the bottom of the outdoor heat exchanger.
Preferably, when the air conditioner reaches default run time with heating mode operation, the controller controls institute
Air conditioner is stated into the defrost stage.
Preferably, the air conditioner includes indoor fan and switch, enters the situation in defrost stage in the air conditioner
Under, before the outdoor fan reversion is controlled, the controller is additionally operable to：Control the indoor fan and the outdoor fan
Shut down；And control the switch action to form kind of refrigeration cycle.
Preferably, the air conditioner includes compressor, in the case where the air conditioner enters the defrost stage, the control
Device is additionally operable to：The compressor is again started up after controlling the compressor preset stopping time out of service, in the compressor
The outdoor fan is controlled to invert while being again started up or before the compressor is again started up.
Preferably, the switch is four-way valve.
Correspondingly, the present invention also provides a kind of air conditioner defrosting control method, and the air conditioner includes outdoor fan, the sky
Device defrosting control method is adjusted to include：Judge whether the air conditioner enters the defrost stage；And if the air conditioner entranceization
In the white stage, the outdoor fan reversion is controlled to carry out heat convection.
Preferably, the speed reversal of the outdoor fan is selected from 350 revs/min to 900 revs/min.
Preferably, the air conditioner includes outdoor heat exchanger, the air-conditioning when meeting at least one of following condition
Device enters the defrost stage：The temperature of detected outdoor heat exchanger remains less than default starting within the default low temperature continuous time
Temperature；The air conditioner reaches default run time with heating mode operation.
Preferably, if the temperature of outdoor heat exchanger detected in preset time is kept equal to default stop
Only temperature, then control the outdoor fan to stop reversion, and the air conditioner exits the defrost stage.
Preferably, the air conditioner includes indoor fan and switch, enters the situation in defrost stage in the air conditioner
Under, before the outdoor fan reversion is controlled, the air conditioner defrosting control method also includes：Control the indoor fan and
The outdoor fan shuts down；And control the switch action to form kind of refrigeration cycle.
Preferably, the air conditioner includes compressor, in the case where the air conditioner enters the defrost stage, the air-conditioning
Device defrosting control method also includes：The compressor is again started up after controlling the compressor preset stopping time out of service,
The outdoor fan is controlled to invert while the compressor is again started up or before the compressor is again started up.
By above-mentioned technical proposal, when air conditioner enters the defrost stage, control the outdoor fan reversion to carry out pair
Stream heat exchange, accelerates the defrost speed of outdoor heat exchanger and then improves the service efficiency of air conditioner, it is to avoid cause user to use
Discomfort, and improve defrost degree, improve low-temperature heating capacity, and then improve seasonal energy efficiency.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of the air conditioner defrosting control device according to the present invention；
Fig. 2 is the structural representation of the air conditioner of the air conditioner defrosting control device provided with the present invention；And
Fig. 3 is the flow chart of the air conditioner defrosting control method according to one embodiment of the present invention.
Description of reference numerals
The controller of 10 air-conditioning defrosting control device 11
The indoor set of 12 temperature detector 100
The indoor fan of 110 indoor heat exchanger 120
The compressor of 200 outdoor unit 210
The outdoor heat exchanger of 220 outdoor fan 230
The four-way valve of 240 capillary 250
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 is the structural representation of the air conditioner defrosting control device according to the present invention.As shown in figure 1, the present invention is provided
A kind of air-conditioning defrosting control device 10, air conditioner includes outdoor fan 220, wherein, the air conditioner defrosting control device 10
Including：Controller 11, for performing following steps：Judge whether the air conditioner enters the defrost stage；And if the sky
Adjust device to enter the defrost stage, control the outdoor fan 220 to invert to carry out heat convection.To improve heat transfer effect, lifting
The defrost efficiency of air conditioner, and then the service efficiency of air conditioner is improved, improve defrost degree, improve low-temperature heating capacity.
The speed reversal of the outdoor fan 220 could be arranged to the rotating speed run before defrost, or can be selected from
350 revs/min to 900 revs/min, certain present invention is not restricted to this.
The air conditioner includes outdoor heat exchanger, as shown in figure 1, air conditioner defrosting control device 10 can also include temperature
Detector 12 (in figure shown in dotted line frame), is installed on the outdoor heat exchanger, the temperature for detecting the outdoor heat exchanger；
Wherein, in order to ensure to enter into and exit from the correct judgement in defrost stage, it is to avoid just outdoor heat exchanger frosting is blocked up to enter defrost rank
Section or frosting degree is too low is put into the defrost stage, the controller 11 is additionally operable to when being detected within the default low temperature continuous time
To the temperature of outdoor heat exchanger remain less than default initial temperature when control the air conditioner to enter the defrost stage；When being detected
To outdoor heat exchanger temperature be more than or equal to preset stopping temperature when control the air conditioner to exit the defrost stage.By upper
State control and further ensure defrost efficiency, and then improve the service efficiency of air conditioner.Wherein in order to timely entering
White stage, temperature detector 12 may be mounted at the bottom of outdoor heat exchanger, for example, be mounted on outdoor heat exchanger bottom
On coil pipe, to enable the temperature detected to reflect the frosting degree of outdoor heat exchanger in time.
Certain judgement for entering into and exiting from the defrost stage is also based on the time of air conditioner heat-production operation and defrost continues
Time, based on actual conditions, corresponding time value can be preset, regularly to carry out defrost.Thus, the controller 11 is also used
In：When the air conditioner reaches default run time with heating mode operation, the air conditioner is controlled to enter the defrost stage, when
The condition that the defrost stage so can also be entered in above-mentioned two combines, i.e., when meeting above-mentioned two condition simultaneously, control
The air conditioner enters the defrost stage；When the defrost phase duration reaches preset durations, the air-conditioning is controlled
Device exits the defrost stage.
In the case of it is determined that air conditioner enters the defrost stage, start to perform defrosting control process.Controller 11 controls sky
Adjust the indoor fan and outdoor fan 220 of device to shut down, and control the switch of air conditioner to act to form kind of refrigeration cycle, institute
Kind of refrigeration cycle can be carried out and heat the switching between circulation by stating switch, and then controller control outdoor fan 220 is inverted.By
In from cyclic switching is heated to kind of refrigeration cycle, the pressure in pipeline is unstable, is likely to result in the damage of compressor, therefore preferably
Ground, can control compressor out of service, compression is again started up after the preset stopping time before the reversion of outdoor fan 220
Machine, to avoid damaging compressor.Wherein described switch can be four-way valve.
Generally, the defrost of air conditioner refers to the defrost for outdoor heat exchanger, the heat exchange installed outdoors of outdoor fan 220
The inner side of device on the inside of the outdoor heat exchanger being previously mentioned here and below (outside referring to outdoor heat exchanger away from outdoor unit
Simultaneously), its can positive operating (clockwise), reversely (counterclockwise) can also operate, now, outdoor fan 220 from it is outer laterally
Inner side air draught is with to air draft outside outdoor unit.When air conditioner heat-production pattern or refrigeration mode are run, outdoor fan 220 is forward direction
Operating.In the defrost stage, the innermost part of outdoor heat exchanger that row's coil pipe of most inner side (for multiple rows of heat exchanger be)
First defrost, the temperature rise of innermost part is most fast.Inverted in defrost stage control outdoor fan 220, make it outside from inner side
Cross air blasting, carries out forced-convection heat transfer, and then gradually band, to the Outboard Sections of outdoor heat exchanger, shortens outdoor heat exchange by heat
The defrost time of device, improve the defrost efficiency of outdoor heat exchanger.When the temperature detected by temperature detector 12 is more than or waits
The air conditioner is controlled to exit the defrost stage when preset stopping temperature (such as 8 DEG C), or temperature detector 12 is when default
Interior detected temperature controls the air conditioner to exit the defrost stage when being more than or equal to preset stopping temperature, and according to it
Preceding operation mode is continued to run with.
The present invention is described in detail by embodiment below with reference to Fig. 2, but the present invention is not restricted to this.
Fig. 2 is the structural representation of the air conditioner of the air conditioner defrosting control device provided with the present invention.Such as Fig. 2 institutes
Show, air conditioner includes indoor section 100 and outdoor section 200, wherein indoor section 100 includes indoor heat exchanger 110 and interior
Blower fan 120；Outdoor section 200 includes compressor 210, outdoor fan 220, outdoor heat exchanger 230, capillary 240 and four-way valve
250,.Outdoor temperature sensor 12 is installed on outdoor heat exchanger 230.The kind of refrigeration cycle direction that solid arrow is represented in figure, it is empty
Line arrow represents to heat loop direction.
When air conditioner is run with heating mode, compressor 210 is by refrigerant compression is into gases at high pressure and discharges, now four-way
Valve 250 is in "on" position, and formation heats circulation, and the gases at high pressure of discharge enter to indoor set 100 after four-way valve 250
Exchanged heat in indoor heat exchanger 110, indoor fan 120 operates the discharge so as to heat while heat exchange；Gases at high pressure pass through
Become highly pressurised liquid after heat exchange, the evaporation of outdoor heat exchanger 230 is then entered after the throttling of capillary 240 becomes low pressure gas
Body, while can be absorbed heat, is back in compressor 210 finally by four-way valve 250, so carries out.Said process is air conditioner
One under heating mode heats circulation.
When the temperature of outdoor heat exchanger 30 that temperature detector 12 was detected in 5 minutes is respectively less than -3 DEG C, then controller 11
Air conditioner is controlled to enter the defrost stage.The control of controller 11 compressor 210, outdoor fan 220 and indoor fan 120 stop fortune
OK, and four-way valve 250 is controlled to power off to form kind of refrigeration cycle., can be in compressor in order to avoid causing to damage to compressor 210
Its startup of secondary control again after 210 a period of times (such as 30 seconds) out of service.Now air conditioner is under refrigeration mode, and outdoor is changed
Hot device 230 outwards release heat to carry out defrost, and in order to accelerate the thawing speed of frosting on outdoor heat exchanger 230, can be controlled
The control outdoor fan 220 of device 11 inverts to produce heat convection.In order to start outdoor fan after the stable operation of compressor 210
220, can since compressor 210 start timing, control outdoor fan 220 to invert again after 30 seconds, to ensure air conditioner
Stable operation.The air conditioner is controlled to move back when the temperature detected by temperature detector 12 is more than or equal to preset stopping temperature
Go out the defrost stage, or the temperature detected in preset time of temperature detector 12 is when being more than or equal to preset stopping temperature
Control the air conditioner to exit the defrost stage, and control indoor fan 120, outdoor fan 220 to run well and control four-way valve
250 are powered so that air conditioner is continued to run with according to operation mode before.
Correspondingly, the present invention also provides a kind of air conditioner defrosting control method.The air conditioner includes outdoor fan, the sky
Device defrosting control method is adjusted to include：Judge whether the air conditioner enters the defrost stage；And if the air conditioner entranceization
In the white stage, the outdoor fan reversion is controlled to carry out heat convection.
Fig. 3 is the flow chart of the air conditioner defrosting control method according to one embodiment of the present invention.As shown in figure 3,
Step 301 place, air conditioner is run with heating mode；At step 302, the outdoor heat exchanger within the default low temperature continuous time is judged
Temperature whether be less than default initial temperature；Preset if the temperature of outdoor heat exchanger is less than within the default low temperature continuous time
Beginning temperature, then at step 303, control indoor fan, outdoor fan and compressor shut down, and control four-way valve to power off；
At step 304, control outdoor fan inverts and controls compressor operation；Now air conditioner carries out defrost, at step 305,
Judge whether the temperature of outdoor heat exchanger is more than or equal to preset stopping temperature；If the temperature of outdoor heat exchanger is more than or equal to
Preset stopping temperature, then control indoor fan and outdoor fan to run well and control four-way valve to be powered at step 306, so that
Air conditioner is obtained to operate according to operational mode before.
About air conditioner defrosting control method detail and benefit with above-mentioned for air conditioner defrosting control device
Details and benefit are identical, are repeated no more in this.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (15)
1. a kind of air conditioner defrosting control device, the air conditioner includes outdoor fan, it is characterised in that the air conditioner defrost control
Device processed includes：
Controller, for performing following steps：
Judge whether the air conditioner enters the defrost stage；And
If the air conditioner enters the defrost stage, the outdoor fan reversion is controlled to carry out heat convection,
Wherein, the air conditioner includes outdoor heat exchanger, and the controller is additionally operable to control the sky when meeting following condition
Device is adjusted to enter the defrost stage：
The temperature of detected outdoor heat exchanger remains less than -3 DEG C within the default low temperature continuous time.
2. air conditioner defrosting control device according to claim 1, it is characterised in that the speed reversal of the outdoor fan
Selected from 350 revs/min to 900 revs/min.
3. air conditioner defrosting control device according to claim 1, it is characterised in that the controller is additionally operable to meeting
Also the air conditioner is controlled to enter the defrost stage during following condition：
The air conditioner reaches default run time with heating mode operation.
4. air conditioner defrosting control device according to claim 1, it is characterised in that if detected in preset time
To the temperature of outdoor heat exchanger be kept equal to preset stopping temperature, then the controller controls the outdoor fan to stop
Only invert, the air conditioner exits the defrost stage.
5. the air conditioner defrosting control device according to claim 3 or 4, it is characterised in that the air conditioner defrosting control
Device also includes：
Temperature detector, is installed on the outdoor heat exchanger, the temperature for detecting the outdoor heat exchanger.
6. air conditioner defrosting control device according to claim 5, it is characterised in that the temperature detector is installed on institute
State the bottom of outdoor heat exchanger.
7. the air conditioner defrosting control device according to any one of claim 1-4 claim, it is characterised in that described
Air conditioner includes indoor fan and switch, in the case where the air conditioner enters the defrost stage, is controlling the outdoor wind
Before machine reversion, the controller is additionally operable to：
The indoor fan and the outdoor fan is controlled to shut down；And
The switch action is controlled to form kind of refrigeration cycle.
8. air conditioner defrosting control device according to claim 7, it is characterised in that the air conditioner includes compressor,
In the case where the air conditioner enters the defrost stage, the controller is additionally operable to：Control the compressor out of service default
The compressor is again started up after dwell time, is again started up while the compressor is again started up or in the compressor
The outdoor fan is controlled to invert before.
9. air conditioner defrosting control device according to claim 7, it is characterised in that the switch is four-way valve.
10. a kind of air conditioner defrosting control method, the air conditioner includes outdoor fan, it is characterised in that the air conditioner defrost
Control method includes：
Judge whether the air conditioner enters the defrost stage；And
If the air conditioner enters the defrost stage, the outdoor fan reversion is controlled to carry out heat convection,
Wherein, the air conditioner includes outdoor heat exchanger, and when meeting following condition, the air conditioner enters the defrost stage：
The temperature of detected outdoor heat exchanger remains less than -3 DEG C within the default low temperature continuous time.
11. air conditioner defrosting control method according to claim 10, it is characterised in that the reversion speed of the outdoor fan
Degree is selected from 350 revs/min to 900 revs/min.
12. air conditioner defrosting control method according to claim 10, it is characterised in that described in when meeting following condition
Air conditioner also enters the defrost stage：
The air conditioner reaches default run time with heating mode operation.
13. air conditioner defrosting control method according to claim 10, it is characterised in that if examined in preset time
The temperature of the outdoor heat exchanger measured is kept equal to preset stopping temperature, then controls the outdoor fan to stop reversion,
The air conditioner exits the defrost stage.
14. the air conditioner defrosting control method according to any one of claim 10-13 claim, it is characterised in that
The air conditioner includes indoor fan and switch, in the case where the air conditioner enters the defrost stage, is controlling the room
Before outer blower fan reversion, the air conditioner defrosting control method also includes：
The indoor fan and the outdoor fan is controlled to shut down；And
The switch action is controlled to form kind of refrigeration cycle.
15. air conditioner defrosting control method according to claim 14, it is characterised in that the air conditioner includes compression
Machine, in the case where the air conditioner enters the defrost stage, the air conditioner defrosting control method also includes：The control compression
Machine is again started up the compressor after the preset stopping time out of service, while the compressor is again started up or described
Compressor controls the outdoor fan to invert before being again started up.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218396.1A CN104819610B (en) | 2015-04-30 | 2015-04-30 | air conditioner defrosting control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218396.1A CN104819610B (en) | 2015-04-30 | 2015-04-30 | air conditioner defrosting control device and method |
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| Publication Number | Publication Date |
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| CN104819610A CN104819610A (en) | 2015-08-05 |
| CN104819610B true CN104819610B (en) | 2017-11-07 |
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| CN201510218396.1A Active CN104819610B (en) | 2015-04-30 | 2015-04-30 | air conditioner defrosting control device and method |
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