CN109028462A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
- Publication number
- CN109028462A CN109028462A CN201810510292.1A CN201810510292A CN109028462A CN 109028462 A CN109028462 A CN 109028462A CN 201810510292 A CN201810510292 A CN 201810510292A CN 109028462 A CN109028462 A CN 109028462A
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- CN
- China
- Prior art keywords
- air conditioner
- control method
- time
- defrosting
- defrosting control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
- F24F11/62—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
- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (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 invention proposes a kind of air conditioner defrosting control method, the defrosting control method includes the following steps: after air conditioner starts heating operation, every time tdCalculate time period tdThe average value Q of the heating capacity of interior air conditionernAs a reference value；If air conditioner runing time t > td, calculate the real-time heating capacity Q of air conditioner；Compare Q and Qn, and judged whether that air conditioner is made to enter defrosting according to comparison result；Wherein, QnFor air conditioner last update a reference value.The present invention using the variation of the heating capacity of air conditioner judges whether that air conditioner is made to enter defrosting mode, thus the influence during reducing defrosting to the full extent to room temperature, making room temperature is not in biggish fluctuation.
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, if outside humidity is larger, reaches the condition of frosting in operation heating operations, outdoor
Chance frosting, and what frosting directly affected is exactly heating capacity, with the increasing of frosting degree, heating capacity continuous decrement, room temperature
Degree will appear fluctuation.Defrost operation must be carried out when decaying to a certain extent.When existing air conditioner is usually using operation
Between+outdoor coil temperature goes to judge whether to enter defrosting, but this mode can not directly embody the practical heating capacity of air-conditioning
Attenuation degree, i.e., under different operating conditions, the corresponding heating capacity decaying of identical outer coil temperature attenuation degree is different, very
Active influence user uses the decaying of heating capacity.
Based on this, the present invention is specifically proposed.
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: to start heating operation in air conditioner
Afterwards, every time tdCalculate time period tdThe average value Q of the heating capacity of interior air conditionernAs a reference value；If air conditioner runing time
T > td, calculate the real-time heating capacity Q of air conditioner；Compare Q and Qn, and judge whether that entering air conditioner removes according to comparison result
Frost；Wherein, QnFor air conditioner last update a reference value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " every time tdCalculate time period tdInterior air-conditioning
The average value Q of the heating capacity of devicenAs a reference value " the step of include: in each time period tdIt is interior, one is calculated every preset time
The heating capacity q of secondary air conditionerm；QnFor in time tdAll heating capacity q of the air conditioner being inside calculatedmAverage value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " air conditioner is calculated every preset time
Heating capacity qm" the step of include: every preset time obtain indoor coil temperature TcAnd the temperature T of indoor environmentr；qm
=kf (Tc- Tr)；Wherein, k is the coefficient of heat transfer of indoor heat exchanger and air；F is heat exchange area.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the tdIt is 10 minutes.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the preset time is 1 minute.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " calculating the heating capacity Q of air conditioner in real time "
Step includes: the real-time temperature t for obtaining indoor coilcAnd the temperature t of indoor environmentr；The real-time heating capacity Q=kf of air conditioner
(tc- tr)；Wherein, k is the coefficient of heat transfer of indoor heat exchanger and air；F is heat exchange area.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " compare Q and Qn, and sentenced according to comparison result
It is disconnected that air conditioner whether is made to enter defrosting " if the step of include: Q/QnWhen less than or equal to the first preset value, enters air conditioner and remove
White mode.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " compare Q and Qn, and sentenced according to comparison result
It is disconnected that air conditioner whether is made to enter defrosting " the step of further include: if Q/QnGreater than the first preset value, and it is default to be less than or equal to second
When value, by the step number of throttle valve opening increase setting, and/or increase the rotation speed of fan of outdoor unit.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " compare Q and Qn, and sentenced according to comparison result
It is disconnected that air conditioner whether is made to enter defrosting " the step of further include: if Q/QnGreater than the second preset value, then air conditioner is made to remain current
Heating condition.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first preset value is 0.6, described second
Preset value is 0.8.
The present invention using the variation of the heating capacity of air conditioner judges whether that air conditioner is made to enter defrosting mode, thus in maximum
Reduce the influence during to defrost to room temperature in degree, making room temperature is not in biggish fluctuation.Also, the present invention
It can be further reduced defrosting number in such a way that the variation of heating capacity judges whether into defrosting, reduce defrosting frequency, together
When can also ensure that the comfort of user.
Detailed description of the invention
Fig. 1 is the broad flow diagram of air conditioner defrosting control method of the invention；
Fig. 2 is the detail flowchart 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: S110, after air conditioner starts heating operation, Mei Geshi
Between tdCalculate time period tdThe average value Q of the heating capacity of interior air conditionernAs a reference value；If S120, air conditioner runing time t >
td, calculate the real-time heating capacity Q of air conditioner；S130, compare Q and Qn, and judge whether that entering air conditioner removes according to comparison result
Frost；Wherein, QnFor air conditioner last update a reference value.A reference value can be understood as judging air-conditioning herein
One value of the variation of device heating capacity.
It will be appreciated to those of skill in the art that air conditioner frosting directly affected is indoor heating capacity, and heat
The variation of amount will lead to room temperature and fluctuate, to influence the comfort of user.Existing defrosting control mode is simultaneously
The attenuation degree that the practical heating capacity of air conditioner cannot directly be embodied, i.e., under different operating conditions, identical outer coil temperature decaying
The corresponding heating capacity decaying of degree is different.And the present invention judges whether to defrost according to the variation of heating capacity of air conditioner,
To reduce the influence during to defrost to room temperature to the full extent, making room temperature is not in biggish fluctuation.
Also, the present invention can be further reduced defrosting number in such a way that the variation of heating capacity judges whether into defrosting, reduce
Defrost frequency, while can also ensure that the comfort of user.
Referring to the detail flowchart of Fig. 2 air conditioner defrosting control method that the present invention will be described in detail.As shown in Fig. 2,
Step S210 is first carried out, after air conditioner starts heating operation, the heating of air conditioner in the period was calculated every 10 minutes
The average value Q of amountnAs a reference value.In this step, time period tdIt is 10 minutes.It will be appreciated to those of skill in the art that
The time is only illustrated as example, is also an option that other suitable periods according to the practical application scene of air conditioner,
Such as 8 minutes, 9 minutes, 11 minutes etc., these are without departure from protection scope of the present invention.
Calculate average value QnSpecific steps include: every 1 minute obtain an indoor coil temperature TcAnd indoor ring
The temperature T in borderr；Then the heating capacity q of the air conditioner in one minute is calculatedm=kf (Tc- Tr), which turns for indoor unit
The heating capacity of the air conditioner calculated in the case that speed is constant, wherein k is the coefficient of heat transfer of indoor heat exchanger and air, and f is heat exchange
Area.It is respectively q that the heating capacity of air conditioner is obtained in 10 minutes1、q2、…q10, average value Qn=(q1+q2+…+q10)/
10.It should be noted that the present embodiment obtained the heating capacity of an air conditioner every 1 minute, it is merely illustrative, this field
Technical staff can flexibly set the preset time at interval, such as the heating of an air conditioner can be obtained every two minutes
Amount, then available 5 class value in 10 minutes, then the average value of this five class value is calculated, these are without departure from protection model of the invention
It encloses.
If calculating the heating capacity Q of air conditioner in real time subsequently into step S220, air conditioner runing time t > 10 minutes.Tool
For body, when air conditioner runing time is more than after ten minutes, to calculate first a reference value Q1, at this time in air conditioner runing time
The real-time heating capacity Q and a reference value Q of the air conditioner calculated between 10-20 minutes1Compare；When air conditioner is run more than 20 minutes
Afterwards, second a reference value Q is calculated at this time2, the air conditioner that is calculated between air conditioner runing time 20-30 minutes at this time it is real-time
Heating capacity Q and a reference value Q2Compare；And so on.That is as the Q of a reference valuenIt was updated once every 10 minutes, and it is each
The Q of an a reference value of the real-time heating capacity Q and recent renewal of calculated air conditioner in updated next 10 minutesnInto
Row compares.So, it can more accurately judge the deformation of heating capacity of air conditioner, be whether air conditioner enters defrosting mould
Formula provides accurate judgment basis.
In step S220, the real-time heating capacity Q=kf (t of air conditionerc- tr), k is the heat exchange of indoor heat exchanger and air
Coefficient, f are heat exchange area, tcFor the temperature of indoor coil, trFor the temperature of indoor environment.Skilled addressee readily understands that
, indoor fan is in same rotating speed in air conditioner heat-production operational process.
Subsequently into step S230, calculate Q/QnRatio.In the non-frosting of air conditioner or just start frosting and frosting is thick
In the case that degree is little, there is not greater attenuation, i.e. Q/Q in QnValue close to 1.In the case where air conditioner enters frosting state, air conditioner
Exchange capability of heat will start to decay, cause heating capacity Q decline, work as Q/Qn> 0.8, illustrate air conditioner heating capacity Q decline compared with
It is few, S240 is entered step at this time, air conditioner maintains current heating condition.
Work as Q/QnWhen≤0.8, enters step S250, judges Q/QnWhether 0.6 is greater than.If Q/Qn> 0.6, illustrates air-conditioning
The heating capacity Q of device has decline by a relatively large margin, it is also possible to substantially meet indoor heating demands, enters step at this time
S260, the throttle valve opening of air conditioner is increased into 50 steps, while increases the rotation speed of fan of outdoor unit.Knot can be effectively reduced in this way
White speed, to delay frosting.
Work as Q/QnWhen≤0.6, illustrating the frosting of air conditioner than more serious, the exchange capability of heat of air conditioner is greatly lowered, this
When enter step S270, air conditioner made to enter defrosting mode.
It should be noted that numerical value 0.6 and 0.8 among the above is only illustrated as example.Those skilled in the art can
Other reasonable first preset values and the second preset value are selected to replace 0.6 and 0.8 respectively with the practical application according to air conditioner.
In conclusion the present invention using the variation of the heating capacity of air conditioner judges whether that air conditioner is made to enter defrosting mode,
To reduce the influence during to defrost to room temperature to the full extent, making room temperature is not in biggish fluctuation.
Also, the present invention can be further reduced defrosting number in such a way that the variation of heating capacity judges whether into defrosting, reduce
Defrost frequency, while can also ensure that the comfort of user.
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:
After air conditioner starts heating operation, every time tdCalculate time period tdThe average value Q of the heating capacity of interior air conditionernMake
On the basis of be worth；
If air conditioner runing time t > td, calculate the real-time heating capacity Q of air conditioner；
Compare Q and Qn, and judged whether that air conditioner is made to enter defrosting according to comparison result；
Wherein, QnFor air conditioner last update a reference value.
2. air conditioner defrosting control method according to claim 1, which is characterized in that " every time tdCalculate time period td
The average value Q of the heating capacity of interior air conditionernAs a reference value " the step of include:
In each time period tdIt is interior, the heating capacity q of an air conditioner is calculated every preset timem；
QnFor in time tdAll heating capacity q of the air conditioner being inside calculatedmAverage value.
3. air conditioner defrosting control method according to claim 2, which is characterized in that " calculated every preset time primary
The heating capacity q of air conditionerm" the step of include:
The temperature T of indoor coil is obtained every preset timecAnd the temperature T of indoor environmentr；
qm=kf (Tc- Tr)；
Wherein, k is the coefficient of heat transfer of indoor heat exchanger and air；F is heat exchange area.
4. air conditioner defrosting control method according to claim 3, which is characterized in that the tdIt is 10 minutes.
5. air conditioner defrosting control method according to claim 3, which is characterized in that the preset time is 1 minute.
6. air conditioner defrosting control method according to claim 1, which is characterized in that " calculate the heating of air conditioner in real time
Measure Q " the step of include:
The temperature t of indoor coil is obtained in real timecAnd the temperature t of indoor environmentr；
The real-time heating capacity Q=kf (t of air conditionerc- tr)；
Wherein, k is the coefficient of heat transfer of indoor heat exchanger and air；F is heat exchange area.
7. air conditioner defrosting control method according to any one of claim 1 to 6, which is characterized in that " compare Q and Qn,
And judged whether that air conditioner is made to enter defrosting according to comparison result " the step of include:
If Q/QnWhen less than or equal to the first preset value, air conditioner is made to enter defrosting mode.
8. air conditioner defrosting control method according to claim 7, which is characterized in that " compare Q and Qn, and tied according to comparing
Fruit judges whether that air conditioner is made to enter defrosting " the step of further include:
If Q/QnGreater than the first preset value, and be less than or equal to the second preset value when, by throttle valve opening increase setting step number,
And/or increase the rotation speed of fan of outdoor unit.
9. air conditioner defrosting control method according to claim 8, which is characterized in that " compare Q and Qn, and tied according to comparing
Fruit judges whether that air conditioner is made to enter defrosting " the step of further include:
If Q/QnGreater than the second preset value, then air conditioner is made to maintain current heating condition.
10. air conditioner defrosting control method according to claim 9, which is characterized in that first preset value is 0.6,
Second preset value is 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510292.1A CN109028462A (en) | 2018-05-24 | 2018-05-24 | Air conditioner defrosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510292.1A CN109028462A (en) | 2018-05-24 | 2018-05-24 | Air conditioner defrosting control method |
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| Publication Number | Publication Date |
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| CN109028462A true CN109028462A (en) | 2018-12-18 |
Family
ID=64611248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810510292.1A Pending CN109028462A (en) | 2018-05-24 | 2018-05-24 | Air conditioner defrosting control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375502A (en) * | 2019-08-01 | 2019-10-25 | 长虹美菱股份有限公司 | A kind of wind cooling refrigerator defrosting control method, control device and wind cooling refrigerator |
| CN110513817A (en) * | 2019-08-26 | 2019-11-29 | Tcl空调器(中山)有限公司 | A kind of air conditioner heat-production control method and air conditioner |
| CN110762752A (en) * | 2019-10-16 | 2020-02-07 | 青岛海尔空调电子有限公司 | Ultrasonic defrosting and descaling device and method for controlling same |
| WO2023024557A1 (en) * | 2021-08-23 | 2023-03-02 | 青岛海尔空调器有限总公司 | Air conditioner control method and air conditioner |
| WO2023029653A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调电子有限公司 | Defrosting control method for outdoor unit of air conditioner, and air conditioner |
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| CN105066377A (en) * | 2015-09-10 | 2015-11-18 | Tcl空调器(中山)有限公司 | Defrosting control method and device of air conditioner and air conditioner |
| CN106152644A (en) * | 2016-06-30 | 2016-11-23 | 珠海格力电器股份有限公司 | Heat pump air conditioner unit defrosting control method and system |
| CN106705386A (en) * | 2017-02-28 | 2017-05-24 | 广东美的制冷设备有限公司 | Air-conditioner control method and air-conditioner |
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| JP2004232942A (en) * | 2003-01-30 | 2004-08-19 | Fujitsu General Ltd | Defrosting control method for air conditioner |
| CN104964400A (en) * | 2015-07-21 | 2015-10-07 | 芜湖美智空调设备有限公司 | Air conditioner and control method thereof |
| CN105066377A (en) * | 2015-09-10 | 2015-11-18 | Tcl空调器(中山)有限公司 | Defrosting control method and device of air conditioner and air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375502A (en) * | 2019-08-01 | 2019-10-25 | 长虹美菱股份有限公司 | A kind of wind cooling refrigerator defrosting control method, control device and wind cooling refrigerator |
| CN110513817A (en) * | 2019-08-26 | 2019-11-29 | Tcl空调器(中山)有限公司 | A kind of air conditioner heat-production control method and air conditioner |
| CN110513817B (en) * | 2019-08-26 | 2021-05-18 | Tcl空调器(中山)有限公司 | Air conditioner heating control method and air conditioner |
| CN110762752A (en) * | 2019-10-16 | 2020-02-07 | 青岛海尔空调电子有限公司 | Ultrasonic defrosting and descaling device and method for controlling same |
| WO2023024557A1 (en) * | 2021-08-23 | 2023-03-02 | 青岛海尔空调器有限总公司 | Air conditioner control method and air conditioner |
| WO2023029653A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调电子有限公司 | Defrosting control method for outdoor unit of air conditioner, and air conditioner |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |