CN106322659A - Self-cleaning control method and device for evaporator of air conditioner - Google Patents
Self-cleaning control method and device for evaporator of air conditioner Download PDFInfo
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- CN106322659A CN106322659A CN201610711301.4A CN201610711301A CN106322659A CN 106322659 A CN106322659 A CN 106322659A CN 201610711301 A CN201610711301 A CN 201610711301A CN 106322659 A CN106322659 A CN 106322659A
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
- F24F2221/225—Cleaning ducts or apparatus using a liquid
Abstract
The invention discloses a self-cleaning control method for an evaporator of an air conditioner. The self-cleaning control method includes the steps that whether an indoor unit enters the heating and defrosting stage or not is detected after the air conditioner enters the evaporator self-cleaning mode; when it is detected that the indoor unit enters the heating and defrosting stage, whether the outdoor temperature is larger than a preset temperature threshold value or not is judged; and when the outdoor temperature is larger than or equal to the preset temperature threshold value, an air conditioner outdoor unit is controlled to run at a limited frequency. The invention further discloses a self-cleaning control device for the evaporator of the air conditioner. By means of the self-cleaning control method and the self-cleaning control device, on the premise that it is ensured that a compressor is not damaged, the heating and defrosting stage is conducted, the self-cleaning stage is completed, and experience of the air conditioner is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to the self-cleaning control method of A/C evaporator and device.
Background technology
During operation of air conditioner, vaporizer can be entered from clear according to based on remote controller or other control controlling equipment
Clean, the vaporizer of air-conditioning is carried out automatically cleaning, it is ensured that the cleannes of air-conditioning, provide the user comfortable environment.At present, at air-conditioning
Vaporizer automatically cleaning during, there is the stage heating defrost, heating the defrost stage, if now in the case of outdoor high temperature
(such as, outdoor environment temperature is more than 50 degree), start heats and system pressure can be caused too high, damages compressor, causes air-conditioning to damage
Bad.
Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is existing skill
Art.
Summary of the invention
Present invention is primarily targeted at a kind of self-cleaning control method of A/C evaporator of offer and device, it is intended to solve
Heating the defrost stage in prior art, if now in the case of outdoor high temperature, start heats and system pressure can be caused too high, damages
Compressor, causes the problem that air-conditioning damages.
For achieving the above object, the self-cleaning control method of a kind of A/C evaporator that the present invention provides, including step:
After air-conditioning enters vaporizer automatically cleaning pattern, whether detecting indoor set enters and heats the defrost stage；
When detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature is more than preset temperature threshold value；
When outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency and run.
Preferably, described control air-conditioner outdoor unit limit frequency runs and includes:
Determine that temperature range corresponding to described outdoor temperature is the first temperature range according to default temperature range；
Determine the peak frequency that described first temperature range is corresponding；
Control air-conditioner outdoor unit to run with the frequency less than described peak frequency.
Preferably, after described control air-conditioner outdoor unit runs with the frequency less than described peak frequency, also include:
Obtain the temperature that outdoor environment is current；
Determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature range；
When the value of described second temperature range is more than the value of described first temperature range, peak frequency determined by reduction
To corresponding predeterminated frequency, and control air-conditioning with the frequency operation less than described predeterminated frequency.
Preferably, described determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature range after, also
Including:
When the value of described second temperature range is less than the value of described first temperature range, or described second temperature range
When being identical temperature range with described first temperature range, control air-conditioning and run with ongoing frequency.
Preferably, described control air-conditioner outdoor unit limit frequency runs and includes:
Determine the raising frequency speed of air-conditioner outdoor unit running frequency；
Reduce described raising frequency speed, and control air-conditioner outdoor unit with the raising frequency speed operation after reducing.
Additionally, for achieving the above object, the present invention also provides for a kind of A/C evaporator self-cleaning control device, including:
Whether detecting module, be used for detecting indoor set and enter and heat the defrost stage；
Judge module, for when detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature is more than pre-
If temperature threshold；
Control module, for when outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency fortune
OK.
Preferably, described control module includes:
Determine unit, for determining that according to the temperature range preset the corresponding temperature scope of described outdoor temperature is the first temperature
Degree scope；Determine that unit is additionally operable to
Determine the peak frequency that described first temperature range is corresponding；
Control unit, runs with the frequency less than described peak frequency for controlling air-conditioner outdoor unit.
Preferably, also include:
Acquisition module, for obtaining the temperature that outdoor environment is current；
Described determine unit, be additionally operable to determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature model
Enclose；
Described control unit, is additionally operable to when the value of described second temperature range is more than the value of described first temperature range,
Peak frequency determined by reduction is to corresponding predeterminated frequency, and controls air-conditioning with the frequency operation less than described predeterminated frequency.
Preferably, described control unit, it is additionally operable to the value in described second temperature range and is less than described first temperature range
Value time, or when described second temperature range and described first temperature range are identical temperature range, control air-conditioning to work as
Front frequency is run.
Preferably, described determine unit, be additionally operable to determine the raising frequency speed of air-conditioner outdoor unit running frequency；
Described control unit, is additionally operable to control air-conditioner outdoor unit and reduces the operation of raising frequency speed.
The present invention is by when air-conditioning automatically cleaning proceeds to heat defrost, it is judged that whether outdoor temperature is more than preset temperature threshold
Value, when outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency and runs.By to off-premises station frequency
Restriction, it is to avoid under outdoor high temperature environment, start heats and causes system pressure too high, damages compressor, causes air-conditioning fault
Problem.By the restriction to off-premises station frequency, under outdoor high temperature environment, on the premise of ensureing that compressor is without prejudice,
Carry out heating the defrost stage, complete the automatically cleaning stage, improve air-conditioning and experience.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of an embodiment of the self-cleaning control method of A/C evaporator of the present invention；
Fig. 2 is to control the schematic flow sheet that air-conditioner outdoor unit limit frequency runs in one embodiment of the invention；
Fig. 3 is to control the schematic flow sheet that air-conditioner outdoor unit limit frequency runs in another embodiment of the present invention；
Fig. 4 is to control the schematic flow sheet that air-conditioner outdoor unit limit frequency runs in further embodiment of this invention；
Fig. 5 is the schematic flow sheet of raising frequency speed in the case of one embodiment of the invention different temperatures；
Fig. 6 is the high-level schematic functional block diagram of the first embodiment of A/C evaporator of the present invention self-cleaning control device；
Fig. 7 is the refinement high-level schematic functional block diagram of control module one embodiment in Fig. 6；
Fig. 8 is the high-level schematic functional block diagram of the second embodiment of A/C evaporator of the present invention self-cleaning control device.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row clearly and completely describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Flow process signal with reference to the first embodiment that Fig. 1, Fig. 1 are the self-cleaning control method of A/C evaporator of the present invention
Figure.
In one embodiment, the self-cleaning control method of described A/C evaporator includes:
Step S10, after air-conditioning enters vaporizer automatically cleaning pattern, whether detecting indoor set enters and heats the defrost stage；
In the present embodiment, air-conditioning receives control instruction, enters vaporizer automatically cleaning, carries out the vaporizer of air-conditioning automatically
Cleaning.During automated cleaning, air conditioner includes four-stage: refrigeration, frosting, defrost and high temperature drying.By above-mentioned four
The individual stage completes the automatically cleaning process of air-conditioning.After air-conditioning enters vaporizer automatically cleaning, whether detecting indoor apparatus of air conditioner enters system
The transconversion into heat frost stage etc..Air-conditioning, after aforementioned four stage running, each stage running certain time, can directly proceed to lower single order
Section, or judge whether that entering next stage runs according to the temperature of evaporator surface；Therefore, whether detecting indoor apparatus of air conditioner enters
Entering to heat the defrost stage can judge according to operation time or evaporator surface temperature.Such as, reach pre-at runtime
If during time (30 minutes or 40 minutes etc. according to automatically cleaning each stage), it is judged that enter and heat the defrost stage.
Step S20, when detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature is more than preset temperature
Threshold value；
Detect indoor set enter heat the defrost stage time, or detect indoor set and will enter and heat the defrost stage
Time, or detect indoor set enter heat the defrost stage before, obtain outdoor environment temperature, it is judged that outdoor environment temperature is the biggest
In preset temperature threshold value, described preset temperature threshold value is the temperature arranged according to heat pump performance, such as, is 50 degree or 60 degree etc.,
Under this preset temperature threshold value, air-conditioning start heats and system pressure can be caused too high, damages compressor, causes air-conditioning fault.
Step S30, when outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency and runs.
Described control air-conditioner outdoor unit limit frequency runs, and can limit the real-time frequency of air-conditioner outdoor unit, it is also possible to be to limit
The raising frequency speed of air-conditioner outdoor unit, the fastest with prevent air-conditioner outdoor unit frequency from rising.The present embodiment is by turning at air-conditioning automatically cleaning
When entering to heat defrost, it is judged that whether outdoor temperature is more than preset temperature threshold value, in outdoor temperature more than or equal to preset temperature threshold
During value, control air-conditioner outdoor unit limit frequency and run.By the restriction to off-premises station frequency, it is to avoid under outdoor high temperature environment, start
Heat and cause system pressure too high, damage compressor, the problem causing air-conditioning fault.By the restriction to off-premises station frequency,
Under outdoor high temperature environment, on the premise of ensureing that compressor is without prejudice, carry out heating the defrost stage, complete the automatically cleaning stage,
Improve air-conditioning to experience.
In a preferred embodiment of the present invention, in order to control the frequency of operation of air conditioner more accurately, protection compressor not by
Damaging, with reference to Fig. 2, described control air-conditioner outdoor unit limit frequency runs and includes:
According to default temperature range, step S31, determines that temperature range corresponding to described outdoor temperature is the first temperature model
Enclose；Outdoor temp angle value T is divided into different regions, i.e. be divided into different intervals (temperature range), and different interval is right
Different maximum frequency values should be set；Such as, as follows:
45 degree of < T≤50 degree, maximum frequency values 40HZ；
50 degree of < T≤55 degree, maximum frequency values 30HZ；
55 degree of < T≤60 degree, maximum frequency values 25HZ；
60 degree of < T, maximum frequency values 15HZ.
Step S32, determines the peak frequency that described first temperature range is corresponding；Getting outdoor temperature and affiliated temperature
After degree scope, determine the peak frequency of correspondence.
Step S33, controls air-conditioner outdoor unit and runs with the frequency less than described peak frequency.Control air-conditioning with less than described
The frequency of peak frequency is run, such as, when outdoor temperature is 56 degree, controls air-conditioning and run with the frequency less than 25HZ, such as,
When outdoor temperature is 40 degree, controls air-conditioning and run with the frequency less than 40HZ.In an embodiment of the present invention, in order to preferably
The compressor controlling air-conditioning is not damaged by, and after determining peak frequency, described peak frequency is reduced certain frequency and runs, described
Certain frequency can be 2HZ or 3HZ etc., and described certain frequency can be correspondingly arranged according to peak frequency, such as, and each maximum frequency
The corresponding different certain frequency of rate, such as, certain frequency corresponding for 40HZ be the certain frequency that 5HZ, 30HZ are corresponding be 3HZ,
Certain frequency corresponding for 25HZ be the certain frequency that 2HZ, 15HZ are corresponding be 0HZ etc., arrange according to user's request and heat pump performance.
Further, in order to preferably control the frequency of air-conditioning, in a preferred embodiment of the present invention, with reference to Fig. 3, step
After S33, also include:
Step S34, obtains the temperature that outdoor environment is current；By the temperature sensor being disposed in the outdoor on machine or setting
At the temperature sensor measurement outdoor environment temperature of other positions outdoor, after entrance heats the defrost stage, obtain outdoor in real time
The temperature that environment is current.
Step S35, determines that temperature range corresponding to the current temperature of outdoor environment is the second temperature range；Temperature range can
To arrange in advance, it may for example comprise following several temperature ranges, 1,45 degree of < T≤50 degree；2,50 degree of < T≤55 degree；3,55 degree
< T≤60 degree；4,60 degree of < T.Temperature range 4 is higher than temperature range 3, and temperature range 3 is higher than temperature range 2, and temperature range 2 is higher than
Temperature range 1.Such as, it is 1 that the temperature of the last outdoor environment measured falls into scope, when the outdoor environment temperature of pre-test falls
Entering scope is 2, then the temperature that outdoor environment is current fall into than determined by the high temperature range of temperature range, i.e. the second temperature
The temperature value of scope is higher than the temperature value of the first temperature range.Such as, the temperature of the last outdoor environment measured falls into scope
Be 3, when the temperature of the outdoor environment of pre-test falls in the range of 2, then the temperature that outdoor environment is current fall into than determined by
The temperature range that temperature range is low, the temperature value of the i.e. second temperature range is lower than the temperature value of the first temperature range.
Step S36, when the temperature value of described second temperature range is more than the temperature value of the first temperature range, reduces institute really
Fixed peak frequency is to corresponding predeterminated frequency, and controls air-conditioning with the frequency operation less than described predeterminated frequency；At outdoor ring
When the Current Temperatures in border falls into a higher temperature range, need to reduce the predeterminated frequency that peak frequency is the most corresponding, described pre-
If frequency is arranged according to heat pump performance and user's request, such as, the corresponding 40HZ of temperature range 1, the corresponding 30HZ of temperature range 2, temperature
The corresponding 20HZ of degree scope 3, the corresponding 15HZ of temperature range 4 etc..
Step S37, when the value of described second temperature range is less than the value of described first temperature range, or described second
When temperature range and described first temperature range are identical temperature range, control air-conditioning and run with ongoing frequency.Acquired
The temperature value of outdoor environment fall into described first temperature range, or fall into the temperature range lower than described first temperature range
Time, do not change the frequency of current operation.In the present invention with in preferred embodiment, the Current Temperatures in indoor environment is maintained at lower
Temperature range exceedes certain time (such as, 5 minutes or 8 minutes etc.), or less than this temperature range reach the standard grade value time, just rising is
Big frequency, i.e. raise current operation frequency.
In the embodiment of the present invention, operation of air conditioner runs except limiting peak frequency, it is also possible to be to limit air-conditioning raising frequency speed.
With reference to Fig. 4, in a preferred embodiment of the present invention, described control air-conditioner outdoor unit limit frequency runs and includes:
Step S38, determines the raising frequency speed of air-conditioner outdoor unit running frequency；Being opened by compressor and count, compressor passes through
Can be only achieved peak frequency after a period of time, frequency can be according to linear at the uniform velocity raising frequency, it is also possible to non-at the uniform velocity jumping characteristic raising frequency (example
As, some frequency values are set as platform, after needing to run certain time under these frequency values platforms, if system does not occurs
Fault, then raising frequency runs to next platform).Because outdoor environment temperature is higher, frequency rise too fast if, cause vaporizer
Temperature sensor collecting temperature is inaccurate, and (sensor is placed on evaporator external, and actual temperature internal with vaporizer exists temperature
Difference and temporal delay).In air-conditioning actual motion, if compressor is with a fixed frequency heating operation, evaporator surface
Temperature can persistently raise, i.e. after reaching the temperature set, temperature also may proceed to rise, and causes the system pressure will be too high,
Therefore, it is necessary to during operation of air conditioner, the running frequency of compressor is defined, i.e. by limiting evaporator temperature
The speed increased.Different raising frequency speed is set according to outdoor temperature.After getting the temperature that outdoor environment is current, it is right to determine
The raising frequency speed answered.
Step S39, reduces described raising frequency speed, and controls air-conditioner outdoor unit with the raising frequency speed operation after reducing.
After getting the raising frequency speed of compressor, reduce described raising frequency speed, and control air-conditioner outdoor unit to reduce after
Raising frequency speed run.Such as, being up raising frequency speed under state with reference to Fig. 5, A line, B line is the raising frequency under high temperature heats
Speed, controls the raising frequency speed of A/C evaporator under high temperature according to B line.By the control to raising frequency speed, effectively control
System pressure, and then avoid the problem of compressor damage, improve the accuracy that air-conditioning controls during automatically cleaning.
The present invention further provides a kind of A/C evaporator self-cleaning control device.The self-cleaning control of this A/C evaporator
Device processed is used for realizing said method.
Functional module with reference to the first embodiment that Fig. 6, Fig. 6 are A/C evaporator of the present invention self-cleaning control device is shown
It is intended to.
In one embodiment, described A/C evaporator self-cleaning control device includes: detecting module 10, judge module 20
With control module 30.
Described detecting module 10, after entering vaporizer automatically cleaning pattern at air-conditioning, whether detecting indoor set enters system
The transconversion into heat frost stage；
In the present embodiment, air-conditioning receives control instruction, enters vaporizer automatically cleaning, carries out the vaporizer of air-conditioning automatically
Cleaning.During automated cleaning, air conditioner includes four-stage: refrigeration, frosting, defrost and high temperature drying.By above-mentioned four
The individual stage completes the automatically cleaning process of air-conditioning.After air-conditioning enters vaporizer automatically cleaning, whether detecting indoor apparatus of air conditioner enters system
The transconversion into heat frost stage etc..Air-conditioning, after aforementioned four stage running, each stage running certain time, can directly proceed to lower single order
Section, or judge whether that entering next stage runs according to the temperature of evaporator surface；Therefore, whether detecting indoor apparatus of air conditioner enters
Entering to heat the defrost stage can judge according to operation time or evaporator surface temperature.Such as, reach pre-at runtime
If during time (30 minutes or 40 minutes etc. according to automatically cleaning each stage), it is judged that enter and heat the defrost stage.
Described judge module 20, for when detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature
More than preset temperature threshold value；
Detect indoor set enter heat the defrost stage time, or detect indoor set and will enter and heat the defrost stage
Time, or detect indoor set enter heat the defrost stage before, obtain outdoor environment temperature, it is judged that outdoor environment temperature is the biggest
In preset temperature threshold value, described preset temperature threshold value is the temperature arranged according to heat pump performance, such as, is 50 degree or 60 degree etc.,
Under this preset temperature threshold value, air-conditioning start heats and system pressure can be caused too high, damages compressor, causes air-conditioning fault.
Described control module 30, for when outdoor temperature is more than or equal to preset temperature threshold value, controlling air-conditioner outdoor unit
Limit frequency runs.
Described control air-conditioner outdoor unit limit frequency runs, and can limit the real-time frequency of air-conditioner outdoor unit, it is also possible to be to limit
The raising frequency speed of air-conditioner outdoor unit, the fastest with prevent air-conditioner outdoor unit frequency from rising.The present embodiment is by turning at air-conditioning automatically cleaning
When entering to heat defrost, it is judged that whether outdoor temperature is more than preset temperature threshold value, in outdoor temperature more than or equal to preset temperature threshold
During value, control air-conditioner outdoor unit limit frequency and run.By the restriction to off-premises station frequency, it is to avoid under outdoor high temperature environment, start
Heat and cause system pressure too high, damage compressor, the problem causing air-conditioning fault.By the restriction to off-premises station frequency,
Under outdoor high temperature environment, on the premise of ensureing that compressor is without prejudice, carry out heating the defrost stage, complete the automatically cleaning stage,
Improve air-conditioning to experience.
In a preferred embodiment of the present invention, in order to control the frequency of operation of air conditioner more accurately, protection compressor not by
Damaging, control module 30 described in reference diagram 7 includes determining unit 31 and control unit 32,
Described determine unit 31, for determining that according to the temperature range preset temperature range corresponding to described outdoor temperature is
First temperature range；Outdoor temp angle value T is divided into different regions, i.e. be divided into different intervals (temperature range), and not
Same interval is correspondingly arranged different maximum frequency values；Such as, as follows:
45 degree of < T≤50 degree, maximum frequency values 40HZ；
50 degree of < T≤55 degree, maximum frequency values 30HZ；
55 degree of < T≤60 degree, maximum frequency values 25HZ；
60 degree of < T, maximum frequency values 15HZ.
Step S32, determines the peak frequency that described first temperature range is corresponding；Getting outdoor temperature and affiliated temperature
After degree scope, determine the peak frequency of correspondence.
Described control unit 32, runs with the frequency less than described peak frequency for controlling air-conditioner outdoor unit.Control sky
Adjust and run with the frequency less than described peak frequency, such as, when outdoor temperature is 56 degree, control air-conditioning with the frequency less than 25HZ
Rate is run, such as, when outdoor temperature is 40 degree, controls air-conditioning and run with the frequency less than 40HZ.In one embodiment of the invention
In, it is not damaged by preferably control the compressor of air-conditioning, after determining peak frequency, described peak frequency is reduced certain
Frequency is run, and described certain frequency can be 2HZ or 3HZ etc., and described certain frequency can be correspondingly arranged according to peak frequency, example
Different certain frequency as corresponding in, each peak frequency, such as, certain frequency corresponding for 40HZ is corresponding certain of 5HZ, 30HZ
Frequency be the certain frequency that 3HZ, 25HZ are corresponding be the certain frequency that 2HZ, 15HZ are corresponding be 0HZ etc., according to user's request and sky
Tonality can be arranged.
Further, in order to preferably control the frequency of air-conditioning, in a preferred embodiment of the present invention, described in reference diagram 8
Device also includes: acquisition module 40,
Described acquisition module 40, for obtaining the temperature that outdoor environment is current；Passed by the temperature being disposed in the outdoor on machine
Sensor or be disposed in the outdoor the temperature sensor measurement outdoor environment temperature of other positions, after entrance heats the defrost stage,
Obtain the temperature that outdoor environment is current in real time.
Described determine unit 31, be additionally operable to determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature model
Enclose；Temperature range can be arranged in advance, it may for example comprise following several temperature ranges, 1,45 degree of < T≤50 degree；2,50 degree of < T
≤ 55 degree；3,55 degree of < T≤60 degree；4,60 degree of < T.Temperature range 4 is higher than temperature range 2 higher than temperature range 3, temperature range 3,
Temperature range 2 is higher than temperature range 1.Such as, it is 1 that the temperature of the last outdoor environment measured falls into scope, when pre-test
It is 2 that outdoor environment temperature falls into scope, then the temperature that outdoor environment is current fall into than determined by the high temperature model of temperature range
Enclose, i.e. the temperature value of the second temperature range is higher than the temperature value of the first temperature range.Such as, the last outdoor environment measured
Temperature to fall into scope be 3, when the temperature of the outdoor environment of pre-test falls in the range of 2, then the temperature that outdoor environment is current
Fall into than determined by the low temperature range of temperature range, the temperature value of the i.e. second temperature range is than the temperature of the first temperature range
It is worth low.
Described control unit 32, is additionally operable to be more than the temperature of the first temperature range at the temperature value of described second temperature range
During value, peak frequency determined by reduction is to corresponding predeterminated frequency, and controls air-conditioning with the frequency less than described predeterminated frequency
Run；When Current Temperatures at outdoor environment falls into a higher temperature range, need to reduce the pre-of peak frequency extremely correspondence
If frequency, described predeterminated frequency is arranged according to heat pump performance and user's request, such as, the corresponding 40HZ of temperature range 1, temperature range
2 corresponding 30HZ, the corresponding 20HZ of temperature range 3, the corresponding 15HZ of temperature range 4 etc..
Described control unit 32, is additionally operable to be less than the value of described first temperature range in the value of described second temperature range
Time, or when described second temperature range is identical temperature range with described first temperature range, control air-conditioning with current frequency
Rate is run.Temperature value at acquired outdoor environment falls into described first temperature range, or falls into than described first temperature model
When enclosing low temperature range, do not change the frequency of current operation.In the present invention with in preferred embodiment, current in indoor environment
Temperature is maintained at lower temperature scope and exceedes certain time (such as, 5 minutes or 8 minutes etc.), or is less than the upper of this temperature range
During line value, just raise peak frequency, i.e. raise current operation frequency.
In the embodiment of the present invention, operation of air conditioner runs except limiting peak frequency, it is also possible to be to limit air-conditioning raising frequency speed.
Described determine unit 31, be additionally operable to determine the raising frequency speed of air-conditioner outdoor unit running frequency；Opened by compressor and count, compressor
Can be only achieved peak frequency through after a period of time, frequency can be according to linear at the uniform velocity raising frequency, it is also possible to non-at the uniform velocity jumping characteristic liter
Frequently (such as, some frequency values are set as platform, after needing to run certain time under these frequency values platforms, if system
Do not break down, then raising frequency runs to next platform).Because outdoor environment temperature is higher, frequency rise too fast if, cause
Evaporator temperature sensor collecting temperature is inaccurate, and (sensor is placed on evaporator external, actual temperature internal with vaporizer
There is the temperature difference and temporal delay).In air-conditioning actual motion, if compressor is with a fixed frequency heating operation, evaporation
The temperature on device surface can persistently raise, i.e. after reaching the temperature set, and temperature also may proceed to rise, and causes system pressure just
Can be too high, therefore, it is necessary to during operation of air conditioner, the running frequency of compressor is defined, i.e. evaporated by restriction
The speed that device temperature increases.Different raising frequency speed is set according to outdoor temperature.After getting the temperature that outdoor environment is current,
Determine the raising frequency speed of correspondence.
Described control unit 32, is additionally operable to reduce described raising frequency speed, and controls air-conditioner outdoor unit with the raising frequency after reducing
Speed is run.
After getting the raising frequency speed of compressor, reduce described raising frequency speed, and control air-conditioner outdoor unit to reduce after
Raising frequency speed run.Such as, being up raising frequency speed under state with reference to Fig. 5, A line, B line is the raising frequency under high temperature heats
Speed, controls the raising frequency speed of A/C evaporator under high temperature according to B line.By the control to raising frequency speed, effectively control
System pressure, and then avoid the problem of compressor damage, improve the accuracy that air-conditioning controls during automatically cleaning.
The present invention also provides for a kind of air-conditioning, and above-mentioned A/C evaporator self-cleaning control device is in this air-conditioning.Institute
State air-conditioner and include the indispensable hardware such as indoor set, off-premises station, airduct.This air-conditioning is by proceeding to heat defrost at air-conditioning automatically cleaning
Time, it is judged that outdoor temperature, whether more than preset temperature threshold value, when outdoor temperature is more than or equal to preset temperature threshold value, controls sky
Off-premises station limit frequency is adjusted to run.By the restriction to off-premises station frequency, it is to avoid under outdoor high temperature environment, start heats and causes system
Hypertonia, damages compressor, the problem causing air-conditioning fault.By the restriction to off-premises station frequency, at outdoor high temperature environment
Under, on the premise of ensureing that compressor is without prejudice, carry out heating the defrost stage, complete the automatically cleaning stage, improve air-conditioning and experience.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. the self-cleaning control method of A/C evaporator, it is characterised in that include step:
After air-conditioning enters vaporizer automatically cleaning pattern, whether detecting indoor set enters and heats the defrost stage；
When detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature is more than preset temperature threshold value；
When outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency and run.
2. the self-cleaning control method of A/C evaporator as claimed in claim 1, it is characterised in that outside described control air conditioning chamber
Machine limit frequency runs and includes:
Determine that temperature range corresponding to described outdoor temperature is the first temperature range according to default temperature range；
Determine the peak frequency that described first temperature range is corresponding；
Control air-conditioner outdoor unit to run with the frequency less than described peak frequency.
3. the self-cleaning control method of A/C evaporator as claimed in claim 2, it is characterised in that outside described control air conditioning chamber
After machine runs with the frequency less than described peak frequency, also include:
Obtain the temperature that outdoor environment is current；
Determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature range；
When the value of described second temperature range is more than the value of described first temperature range, determined by reduction, peak frequency is to the most right
The predeterminated frequency answered, and control air-conditioning with the frequency operation less than described predeterminated frequency.
4. the self-cleaning control method of A/C evaporator as claimed in claim 3, it is characterised in that described determine outdoor environment
After temperature range corresponding to current temperature is the second temperature range, also include:
When the value of described second temperature range is less than the value of described first temperature range, or described second temperature range and institute
State the first temperature range when being identical temperature range, control air-conditioning and run with ongoing frequency.
5. the self-cleaning control method of A/C evaporator as claimed in claim 1, it is characterised in that outside described control air conditioning chamber
Machine limit frequency runs and includes:
Determine the raising frequency speed of air-conditioner outdoor unit running frequency；
Reduce described raising frequency speed, and control air-conditioner outdoor unit with the raising frequency speed operation after reducing.
6. an A/C evaporator self-cleaning control device, it is characterised in that including:
Whether detecting module, be used for detecting indoor set and enter and heat the defrost stage；
Judge module, for when detecting indoor set entrance and heating the defrost stage, it is judged that whether outdoor temperature is more than presetting temperature
Degree threshold value；
Control module, for when outdoor temperature is more than or equal to preset temperature threshold value, controls air-conditioner outdoor unit limit frequency and runs.
7. A/C evaporator self-cleaning control device as claimed in claim 6, it is characterised in that described control module bag
Include:
Determine unit, be the first temperature model for determining temperature range corresponding to described outdoor temperature according to the temperature range preset
Enclose；Determine that unit is additionally operable to
Determine the peak frequency that described first temperature range is corresponding；
Control unit, runs with the frequency less than described peak frequency for controlling air-conditioner outdoor unit.
8. A/C evaporator self-cleaning control device as claimed in claim 7, it is characterised in that also include:
Acquisition module, for obtaining the temperature that outdoor environment is current；
Described determine unit, be additionally operable to determine that temperature range corresponding to the current temperature of outdoor environment is the second temperature range；
Described control unit, is additionally operable to, when the value of described second temperature range is more than the value of described first temperature range, reduce
Determined by peak frequency to corresponding predeterminated frequency, and control air-conditioning and run with the frequency less than described predeterminated frequency.
9. A/C evaporator self-cleaning control device as claimed in claim 8, it is characterised in that described control unit, also
For when the value of described second temperature range is less than the value of described first temperature range, or described second temperature range and institute
State the first temperature range when being identical temperature range, control air-conditioning and run with ongoing frequency.
10. the A/C evaporator self-cleaning control device as described in any one of claim 7 to 9, it is characterised in that described really
Cell, is additionally operable to determine the raising frequency speed of air-conditioner outdoor unit running frequency；
Described control unit, is additionally operable to reduce described raising frequency speed, and controls air-conditioner outdoor unit with the raising frequency speed fortune after reducing
OK.
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| CN201610711301.4A CN106322659A (en) | 2016-08-23 | 2016-08-23 | Self-cleaning control method and device for evaporator of air conditioner |
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| CN201610711301.4A CN106322659A (en) | 2016-08-23 | 2016-08-23 | Self-cleaning control method and device for evaporator of air conditioner |
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| CN201610711301.4A Pending CN106322659A (en) | 2016-08-23 | 2016-08-23 | Self-cleaning control method and device for evaporator of air conditioner |
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| CN108548287A (en) * | 2018-03-31 | 2018-09-18 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under heating mode |
| CN108548303A (en) * | 2018-03-31 | 2018-09-18 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under refrigeration mode |
| CN108444069A (en) * | 2018-03-31 | 2018-08-24 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under refrigeration mode |
| CN108444068A (en) * | 2018-03-31 | 2018-08-24 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under heating mode |
| CN108759022A (en) * | 2018-03-31 | 2018-11-06 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under heating mode |
| CN109253525A (en) * | 2018-08-31 | 2019-01-22 | 海信（山东）空调有限公司 | Fixed frequency air conditioner outdoor heat exchanger automatically cleaning control method and air conditioner |
| CN109253525B (en) * | 2018-08-31 | 2021-04-30 | 海信（山东）空调有限公司 | Self-cleaning control method for outdoor heat exchanger of fixed-frequency air conditioner and air conditioner |
| CN109764502B (en) * | 2019-03-08 | 2020-09-11 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
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Application publication date: 20170111 |