CN109028465A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
- Publication number
- CN109028465A CN109028465A CN201810528036.5A CN201810528036A CN109028465A CN 109028465 A CN109028465 A CN 109028465A CN 201810528036 A CN201810528036 A CN 201810528036A CN 109028465 A CN109028465 A CN 109028465A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- setting value
- control method
- defrosting control
- defrosting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F2110/10—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner defrosting control method.Room temperature fluctuation is excessive when defrosting in order to prevent, and the method for the present invention includes the following steps: during air conditioner heat-production operation, judging whether air conditioner meets defrosting condition；If it is, obtaining indoor environment temperature and compressor exhaust temperature t, and obtain compressor exhaust temperature t again after being spaced preset time before air conditioner enters defrosting mode0；According to the value of pn and Δ t, running frequency, throttle valve opening or the indoor unit of compressor and/or the rotation speed of fan of outdoor unit are selectively controlled；Wherein, pn=preset temperature-outdoor environment temperature；Δ t=t-t0.The present invention is before air conditioner enters defrosting mode, and by storing part energy, during air conditioner defrosting, this portion of energy is supplemented to interior, to effectively prevent room temperature fluctuation when defrosting excessive.
Description
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner defrosting control method.
Background technique
The equipment that air conditioner can adjust indoor environment temperature as one kind, its working principle is that: it is being followed by refrigerant
So that indoor environment temperature is reduced or is increased by the conversion of high voltage/low voltage/gaseous state/liquid state between endless tube road, i.e., from
From the perspective of indoor unit, air conditioner is in refrigeration or heating condition.When air conditioner heat-production operation, in certain humidity item
It will lead to frosting situation if outdoor coil temperature is too low under part, and outdoor coil pipe used frosting will lead to the heat exchange effect of outdoor heat exchanger
Rate reduces, and influences the heating effect of air conditioner, reduces the comfort of indoor environment, influence user experience.Therefore, at air conditioner
In the case of heating condition, the outdoor coil pipe used progress to air conditioner is needed effectively to defrost in time.
Existing domestic air conditioner can judge in several ways whether air conditioner is in knot in operation heating operations
White state, such as go to judge whether to enter defrosting using runing time+outdoor coil temperature.When judging that air conditioner is in frosting shape
After state, then air conditioner is set to enter defrosting mode, however this mode easily causes room temperature larger fluctuation.
Therefore, the invention proposes a kind of new defrosting control methods to reduce the shadow during defrosting to room temperature
It rings.
Summary of the invention
In order to solve the above problem in the prior art, room temperature fluctuation is excessive when defrosting in order to prevent, and the present invention mentions
A kind of air conditioner defrosting control method is gone out, the defrosting control method includes the following steps: the mistake run in air conditioner heat-production
Cheng Zhong, judges whether air conditioner meets defrosting condition；If it is, obtaining indoor ring before air conditioner enters defrosting mode
Border temperature and compressor exhaust temperature t, and compressor exhaust temperature t0 is obtained again after being spaced preset time；According to pn and Δ
The value of t selectively controls running frequency, throttle valve opening or the indoor unit of compressor and/or the rotation speed of fan of outdoor unit；
Wherein, pn=preset temperature-outdoor environment temperature；Δ t=t-t0.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " according to the value of pn and Δ t, selectively control
Running frequency, throttle valve opening or the indoor unit of compressor processed and/or the rotation speed of fan of outdoor unit " if the step of include:
The setting value of pn >=first, and the setting value of Δ t >=second, then promote the running frequency of compressor；If the first setting value of pn <, or
Person's Δ t the second setting value of <, then maintain the running frequency of compressor constant, and reduce throttle valve opening, and/or reduces indoor unit
And/or the rotation speed of fan of outdoor unit.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, if the setting value of pn >=first, and Δ t >=the
The running frequency of the compressor is then promoted 10-15hz by two setting values.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, if the first setting value of pn < or Δ t <
The throttle valve opening is then reduced 20-40 step by the second setting value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, if the first setting value of pn < or Δ t <
Second setting value reduces the rotation speed of fan of the indoor unit and/or outdoor unit by 40-60rpm.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, if the first setting value of pn < or Δ t <
Second setting value reduces the rotation speed of fan of the indoor unit and/or outdoor unit by 50rpm.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first setting value appointing between 0-2
Meaning value；And/or arbitrary value of second setting value between 2-4.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first setting value is 1；And/or
Second setting value is 3.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the preset time is between 25-35 seconds
Any time.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the preset time is 30 seconds；And/or
The preset temperature can select in the range of 16-30 DEG C.
According to the technical solution of the present invention, before air conditioner enters defrosting mode, selectively according to the value of pn and Δ t
The rotation speed of fan of running frequency, throttle valve opening or the indoor unit and/or outdoor unit that control compressor stores a part of energy
Amount, during air conditioner defrosting, this portion of energy is supplemented to interior, so that room temperature when defrosting be effectively prevent to fluctuate
Greatly.It will be appreciated to those of skill in the art that can accurately select corresponding energy storage using the value of pn and Δ t as reference
Mode, to farthest reduce the fluctuation of room temperature when defrosting.
Detailed description of the invention
Fig. 1 is the main flow schematic diagram of air conditioner defrosting control method of the invention.
Specific embodiment
To keep the embodiment of the present invention, technical solution and advantage more obvious, below in conjunction with attached drawing to skill of the invention
Art scheme is clearly and completely described, it is clear that and the embodiment described is a part of the embodiments of the present invention, rather than all
Embodiment.It will be apparent to a skilled person that these embodiments are used only for explaining technical principle of the invention, and
It is not intended to be limiting protection scope of the present invention.
As shown in Figure 1, defrosting control method of the invention includes the following steps: S110, in the mistake of air conditioner heat-production operation
Cheng Zhong, judges whether air conditioner meets defrosting condition；S120, if it is, before air conditioner enters defrosting mode, obtain room
Interior environment temperature and compressor exhaust temperature t, and compressor exhaust temperature t is obtained again after being spaced preset time0；S130,
According to the value of pn and Δ t, running frequency, throttle valve opening or the indoor unit and/or outdoor unit of compressor are selectively controlled
Rotation speed of fan.Wherein, wherein pn=preset temperature-outdoor environment temperature；Δ t=t-t0.In the present embodiment, it presets
Time can be any time between 25-35 seconds, it is preferable that preset time is 30 seconds.Preset temperature can be customized by the user
It is arranged, such as sets preset temperature to the temperature between 16-30 DEG C.
In above-mentioned steps S110-S130, according to the value of pn and Δ t, running frequency, the section of compressor are selectively controlled
The rotation speed of fan for flowing valve opening or indoor unit and/or outdoor unit, to store a part of energy before air conditioner is defrosted
Amount, in this case, during being defrosted, this portion of energy of storage can be added in indoor heating capacity, one
Determine to reduce air conditioner in degree during defrosting to the influence of room temperature, room temperature when so as to effectively prevent defrosting
Degree, which fluctuates excessive situation, to be occurred.
In step s 110, when judging whether air conditioner meets defrosting condition, those skilled in the art be can choose arbitrarily
Known judgment method, the present invention is not defined specific defrosting condition herein.
In step s 130, if the setting value of pn >=first, and the setting value of Δ t >=second then promotes the operation of compressor
Frequency；If the first setting value of pn < or Δ t the second setting value of <, maintain the running frequency of compressor constant, and reduce
Throttle valve opening, and/or reduce the rotation speed of fan of indoor unit and/or outdoor unit.Wherein, the first setting value can be between 0-2
Arbitrary value, the second setting value arbitrary value between 2-4, in the present embodiment, the first setting value are 1, and the second setting value is 3.
As an example, working as pn >=1, and when Δ t >=3, then the running frequency of compressor is promoted into 10-15hz.This field skill
, it is understood that during air conditioner defrosting, indoor heating amount can reduce art personnel, and if will pressure before entering defrosting
After contracting unit frequency is promoted, part energy is stored in compressor, then this portion of energy is supplemented during air conditioner defrosting
To interior, to effectively prevent room temperature fluctuation when defrosting excessive.
As an example, throttle valve opening is then reduced 20-40 step when working as pn < 1 or Δ t < 3；Or make indoor unit
And/or the rotation speed of fan of outdoor unit reduces 40-60rpm, preferably makes the reduction of the rotation speed of fan of indoor unit and/or outdoor unit
50rpm.So, part energy can be stored before entering defrosting, then during air conditioner defrosting, this portion of energy
It is supplemented to interior, to effectively prevent room temperature fluctuation when defrosting excessive.
In conclusion according to the technical solution of the present invention, before air conditioner enters defrosting mode, according to pn's and Δ t
The rotation speed of fan of running frequency, throttle valve opening or indoor unit and/or outdoor unit that value selectively controls compressor is deposited
Part energy is stored up, during air conditioner defrosting, this portion of energy is supplemented to interior, to effectively prevent room when defrosting
Temperature fluctuation is excessive.It will be appreciated to those of skill in the art that can accurately be selected using the value of pn and Δ t as reference
Corresponding energy storage mode, to farthest reduce the fluctuation of room temperature when defrosting.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of air conditioner defrosting control method, which is characterized in that the defrosting control method includes the following steps:
During air conditioner heat-production operation, judge whether air conditioner meets defrosting condition；
If it is, before air conditioner enters defrosting mode, acquisition indoor environment temperature and compressor exhaust temperature t, and
Compressor exhaust temperature t is obtained again after the preset time of interval0；
According to the value of pn and Δ t, running frequency, throttle valve opening or indoor unit and/or the room of compressor are selectively controlled
The rotation speed of fan of outer machine；
Wherein, pn=preset temperature-outdoor environment temperature；Δ t=t-t0。
2. air conditioner defrosting control method according to claim 1, which is characterized in that " according to the value of pn and Δ t, selection
Control running frequency, throttle valve opening or the indoor unit of compressor and/or the rotation speed of fan of outdoor unit to property " the step of wrap
It includes:
If the setting value of pn >=first, and the setting value of Δ t >=second, then promote the running frequency of compressor；
If the first setting value of pn < or Δ t the second setting value of <, maintain the running frequency of compressor constant, and reduce
Throttle valve opening, and/or reduce the rotation speed of fan of indoor unit and/or outdoor unit.
3. air conditioner defrosting control method according to claim 2, which is characterized in that if the setting value of pn >=first, and
The running frequency of the compressor is then promoted 10-15hz by the setting value of Δ t >=second.
4. air conditioner defrosting control method according to claim 2, which is characterized in that if the first setting value of pn <, or
The throttle valve opening is then reduced 20-40 step by person's Δ t the second setting value of <.
5. air conditioner defrosting control method according to claim 2, which is characterized in that if the first setting value of pn <, or
Person's Δ t the second setting value of < reduces the rotation speed of fan of the indoor unit and/or outdoor unit by 40-60rpm.
6. air conditioner defrosting control method according to claim 5, which is characterized in that if the first setting value of pn <, or
Person's Δ t the second setting value of < reduces the rotation speed of fan of the indoor unit and/or outdoor unit by 50rpm.
7. the air conditioner defrosting control method according to any one of claim 2 to 6, which is characterized in that described first sets
Arbitrary value of the definite value between 0-2；And/or
Arbitrary value of second setting value between 2-4.
8. air conditioner defrosting control method according to claim 7, which is characterized in that first setting value is 1；And
And/or person
Second setting value is 3.
9. air conditioner defrosting control method according to any one of claim 1 to 6, which is characterized in that when described default
Between for any time between 25-35 seconds.
10. air conditioner defrosting control method according to claim 9, which is characterized in that the preset time is 30 seconds；And
And/or person
The preset temperature can select in the range of 16-30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528036.5A CN109028465B (en) | 2018-05-24 | 2018-05-24 | Defrosting control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528036.5A CN109028465B (en) | 2018-05-24 | 2018-05-24 | Defrosting control method for air conditioner |
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| Publication Number | Publication Date |
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| CN109028465A true CN109028465A (en) | 2018-12-18 |
| CN109028465B CN109028465B (en) | 2021-04-20 |
Family
ID=64611456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810528036.5A Active CN109028465B (en) | 2018-05-24 | 2018-05-24 | Defrosting control method for air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442475A (en) * | 2020-04-10 | 2020-07-24 | 海信（山东）空调有限公司 | Defrosting control method and device of air conditioning system and air conditioner |
| CN111578458A (en) * | 2020-05-13 | 2020-08-25 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN112797570A (en) * | 2020-12-30 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Defrosting control method, defrosting device and multi-connected air conditioning system |
| CN115031352A (en) * | 2022-06-30 | 2022-09-09 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095955A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095956A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
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| JPH08261541A (en) * | 1995-03-27 | 1996-10-11 | Mitsubishi Heavy Ind Ltd | Heat pump type air conditioner |
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| CN105509255A (en) * | 2016-01-04 | 2016-04-20 | 广东美的暖通设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN106524445A (en) * | 2017-01-10 | 2017-03-22 | 美的集团武汉制冷设备有限公司 | Control method and system of air conditioner and air conditioner |
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| JPH08261541A (en) * | 1995-03-27 | 1996-10-11 | Mitsubishi Heavy Ind Ltd | Heat pump type air conditioner |
| KR20040041442A (en) * | 2002-11-11 | 2004-05-17 | 삼성전자주식회사 | Operation method for defrosting evaporator in air conditioner |
| CN102449408A (en) * | 2009-05-29 | 2012-05-09 | 大金工业株式会社 | Air-conditioning device |
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| CN105509255A (en) * | 2016-01-04 | 2016-04-20 | 广东美的暖通设备有限公司 | Control method of air conditioning system and air conditioning system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442475A (en) * | 2020-04-10 | 2020-07-24 | 海信（山东）空调有限公司 | Defrosting control method and device of air conditioning system and air conditioner |
| CN111578458A (en) * | 2020-05-13 | 2020-08-25 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN111578458B (en) * | 2020-05-13 | 2022-03-01 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN112797570A (en) * | 2020-12-30 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Defrosting control method, defrosting device and multi-connected air conditioning system |
| CN112797570B (en) * | 2020-12-30 | 2022-08-23 | 宁波奥克斯电气股份有限公司 | Defrosting control method, defrosting device and multi-connected air conditioning system |
| CN115031352A (en) * | 2022-06-30 | 2022-09-09 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095955A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095956A (en) * | 2022-06-30 | 2022-09-23 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115031352B (en) * | 2022-06-30 | 2023-07-25 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095956B (en) * | 2022-06-30 | 2023-07-25 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095955B (en) * | 2022-06-30 | 2023-07-25 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
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| Publication number | Publication date |
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| CN109028465B (en) | 2021-04-20 |
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