CN106322660A - 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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- CN106322660A CN106322660A CN201610711302.9A CN201610711302A CN106322660A CN 106322660 A CN106322660 A CN 106322660A CN 201610711302 A CN201610711302 A CN 201610711302A CN 106322660 A CN106322660 A CN 106322660A
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- temperature
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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 after the air conditioner enters the evaporator self-cleaning mode, the running stage of self-cleaning is obtained, and the temperature threshold value corresponding to the running stage is obtained; the environment temperature is obtained; and when the environment temperature is matched with the temperature threshold value, the air conditioner is controlled to run in the force mode corresponding to the running stage. 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, it is avoided that an air conditioner compressor halts and cannot complete the self-cleaning stage, the air conditioner can still complete the air conditioner self-cleaning process under the abnormal environment by entering the force mode, 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, air-conditioning exists
Entering refrigeration frosting during automatically cleaning or entrance heats the stage, if the temperature of outdoor is too low or too high, air-conditioning cannot be transported
Go and freeze frosting or heat the stage, cause completing air-conditioning automatically cleaning process.
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
Prior art is adjusted entrance refrigeration frosting or entrance during automatically cleaning heat the stage, if the temperature of outdoor is too low or mistake
Height, air-conditioning cannot run refrigeration frosting or heat the stage, the problem causing completing air-conditioning automatically cleaning process.
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, it is obtained from the operation phase residing for cleaning, and determines described operation
The temperature threshold that stage is corresponding；
Detection ambient temperature；
When described ambient temperature is mated with described temperature threshold, control air-conditioning with the pattern corresponding with the described operation phase
Run.
Preferably, after described detection ambient temperature, also include:
When the described operation phase is refrigeration frosting, and when described ambient temperature is less than described temperature threshold, it is determined that described
Ambient temperature is mated with described temperature threshold.
Preferably, described control air-conditioning includes with the mode operation corresponding with the described operation phase:
The temperature that sensing chamber's external environment is current；
Judge that whether the current temperature of outdoor environment is less than the first setting threshold value；
When the temperature that described outdoor environment is current sets threshold value less than first, control air-conditioning limit frequency and run.
Preferably, after described detection ambient temperature, also include:
The described operation phase for heating the stage time, and described ambient temperature more than described temperature threshold time, it is determined that described
Ambient temperature is mated with described temperature threshold, and under freezing or heating, described temperature threshold is different.
Preferably, described control air-conditioning includes with the mode operation corresponding with the described operation phase:
The temperature that sensing chamber's external environment is current；
Judge that whether the current temperature of outdoor environment is more than the second setting threshold value；
When the temperature that described outdoor environment is current sets threshold value more than second, control air-conditioning limit frequency and run, described second
Set threshold value more than the first setting threshold value.
Additionally, for achieving the above object, the present invention also provides for a kind of A/C evaporator self-cleaning control device, including:
Acquisition module, after entering vaporizer automatically cleaning pattern at air-conditioning, is obtained from the operation phase residing for cleaning；
Determine module, be used for determining the temperature threshold that the described operation phase is corresponding；
Detection module, is used for detecting ambient temperature；
Control module, for when described ambient temperature is mated with described temperature threshold, control air-conditioning with described operation
The mode operation that stage is corresponding.
Preferably, described control module, it is additionally operable to when the described operation phase is refrigeration frosting, and described ambient temperature is little
When described temperature threshold, it is determined that described ambient temperature is mated with described temperature threshold.
Preferably, also include: judge module,
Described detection module, is additionally operable to the temperature that sensing chamber's external environment is current；
Described judge module, for judging that whether the current temperature of outdoor environment is less than the first setting threshold value；
Described control module, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value less than first, control sky
Limit frequency is adjusted to run.
Preferably, described control module, be additionally operable to the described operation phase for heating the stage time, and described ambient temperature is big
When described temperature threshold, it is determined that described ambient temperature is mated with described temperature threshold, under freezing or heating, described temperature threshold
Value difference.
Preferably, described detection module, it is additionally operable to the temperature that sensing chamber's external environment is current；
Described judge module, is additionally operable to judge that whether the current temperature of outdoor environment is more than the second setting threshold value；
Described control module, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value more than second, control sky
Adjusting limit frequency to run, described second sets threshold value more than the first setting threshold value.
The present invention, by the middle of air-conditioning automatically cleaning process, detects ambient temperature, corresponding with the operation phase in ambient temperature
Temperature threshold coupling time, enter compulsory mode run, i.e. be forced into refrigeration or heating mode, to avoid compressor of air conditioner
Shutdown cannot complete the automatically cleaning stage.By entering compulsory mode so that air-conditioning is at abnormal (ambient temperature is too high or overheated)
In the environment of also be able to air-conditioning automatically cleaning process, 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 the schematic flow sheet controlling operation of air conditioner in one embodiment of the invention under refrigeration；
Fig. 3 is at the schematic flow sheet heating lower control operation of air conditioner in one embodiment of the invention；
Fig. 4 is the schematic flow sheet of raising frequency speed in the case of one embodiment of the invention different temperatures；
Fig. 5 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. 6 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, is obtained from the operation phase residing for cleaning, and determines
The temperature threshold that the described operation phase is corresponding；
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, residing during obtaining air-conditioning automatically cleaning
Operation phase 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, obtain residing for air-conditioning automatically cleaning
Stage can judge according to operation time or evaporator surface temperature.Such as, after air-conditioning enters automatically cleaning pattern, entered
(15 minutes or 20 minutes etc. according to each rank of automatically cleaning for first Preset Time that reach at runtime for cooling stages entered
Section) time, it is judged that enter the refrigeration frost stage in frosting stage, reach second Preset Time (30 minutes or 40 minutes etc. in operation
According to automatically cleaning each stage) time, enter and heat the defrost stage.After getting the operation phase described in automatically cleaning, determine institute
State temperature threshold corresponding to operation phase.Described temperature threshold sets in advance, sets according to heat pump performance difference, and correspondence is not
Same operational mode temperature threshold is different, and heating mode can arrange different from the temperature of refrigeration mode, and the temperature under refrigeration mode
Degree threshold value is less than the temperature threshold under heating mode.
Step S20, detects ambient temperature；Described ambient temperature can be indoor environment temperature can also be outdoor environment temperature
Degree, is detected by the temperature sensor arranged under various circumstances.After getting ambient temperature, by ambient temperature and described temperature
Degree threshold ratio pair, to judge whether coupling, certainly, temperature threshold is corresponding with the residing operation phase.Such as, in refrigeration frosting
During the stage, indoor environment temperature less than temperature threshold (such as, arrange according to heat pump performance for-10 degree or-15 degree or 5 degree etc.),
Determine that ambient temperature is mated with described temperature threshold；Such as, when heating the stage, indoor temperature more than temperature threshold (such as, for
35 degree or 40 degree or 45 degree etc. are arranged according to heat pump performance), determine that ambient temperature is mated with described temperature threshold.
Step S30, when described ambient temperature is mated with described temperature threshold, control air-conditioning with the described operation phase pair
The mode operation answered.
Concrete, when described ambient temperature mate with described temperature threshold, 1) it is frosting of freezing in the described operation phase
Time, and when described ambient temperature is less than described temperature threshold, it is determined that described ambient temperature is mated with described temperature threshold, controls sky
Adjust and run in a chiller mode；2) the described operation phase for heating the stage time, and described ambient temperature is more than described temperature threshold
Time, it is determined that described ambient temperature is mated with described temperature threshold, controls air-conditioning and runs with heating mode, under freezing or heating,
Described temperature threshold is different.Control air-conditioning to include with the mode operation corresponding with the described operation phase: 1) when refrigeration, control by force
Air-conditioning processed enters refrigerating operaton；2) when heating, heating mode operation is entered for controlling air-conditioning by force.The present embodiment is by sky
Adjusting in the middle of automatically cleaning process, detect ambient temperature, when the temperature threshold corresponding with the operation phase in ambient temperature mates, it is right to enter
The mode operation that operation phase answers, i.e. be forced into refrigeration or heating mode, cannot complete certainly to avoid compressor of air conditioner to shut down
Cleaning stage.By entering compulsory mode so that air-conditioning also is able in the environment of abnormal (ambient temperature is too high or overheated)
Complete air-conditioning automatically cleaning process, improve air-conditioning and experience.
In a preferred embodiment of the present invention, in order to more accurately control air-conditioning automatically cleaning run, protection compressor not by
Damaging, with reference to Fig. 2, described control air-conditioning includes with the mode operation corresponding with the described operation phase:
Step S40, the temperature that sensing chamber's external environment is current；By being disposed in the outdoor outside the temperature sensor sensing chamber of environment
Ambient temperature.
Step S50, it is judged that whether the current temperature of outdoor environment is less than the first setting threshold value；Described first set threshold value as
The temperature arranged according to heat pump performance, such as, for-20 degree or-25 degree etc., under this first design temperature, the compression of air-conditioning
Chance starts supercool protection, prevents compressor damage, causes air-conditioning fault.
Step S60, when the temperature that described outdoor environment is current sets threshold value less than first, controls air-conditioning 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 outside air conditioning chamber
The raising frequency speed of machine, too fast with prevent air-conditioner outdoor unit frequency from rising, cause temperature too low, compressor damage.
In a preferred embodiment of the present invention, in order to more accurately control air-conditioning automatically cleaning run, protection compressor not by
Damaging, with reference to Fig. 3, described control air-conditioning includes with the mode operation corresponding with the described operation phase:
Step S70, the temperature that sensing chamber's external environment is current；
Step S80, it is judged that whether the current temperature of outdoor environment is more than the second setting threshold value；Described second set threshold value as
The temperature arranged according to heat pump performance, such as, is 40 degree or 50 degree etc., on this second design temperature, and the compressor of air-conditioning
Overtemperature protection can be started, prevent system pressure excessive, compressor damage, cause air-conditioning fault.
Step S90, when the temperature that described outdoor environment is current sets threshold value more than second, controls air-conditioning limit frequency and runs,
Described second sets threshold value more than the first setting threshold value.Described control air-conditioner outdoor unit limit frequency runs, and can limit outside air conditioning chamber
The real-time frequency of machine, it is also possible to be the raising frequency speed limiting air-conditioner outdoor unit, the fastest with prevent air-conditioner outdoor unit frequency from rising.
Concrete, the scheme heating lower control limit frequency includes: determine described outdoor temperature according to default temperature range
Temperature range；Outdoor temp angle value T is divided into different regions, i.e. be divided into different intervals, and different interval correspondences sets
Put 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.
Determine the peak frequency that the temperature range of described outdoor temperature is corresponding；Getting outdoor temperature and affiliated temperature
After scope, determine the peak frequency of correspondence.
Control air-conditioner outdoor unit to run with the frequency less than described peak frequency.Control air-conditioning with less than described peak frequency
Frequency run, such as, when outdoor temperature is 56 degree, control air-conditioning with less than 25HZ frequency run, such as, at outdoor temp
When degree 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 control air-conditioning
Compressor be not damaged by, after determining peak frequency, by described peak frequency reduce certain frequency run, described certain frequency
Can be 2HZ or 3HZ etc., described certain frequency can be correspondingly arranged according to peak frequency, and such as, each peak frequency correspondence is not
With certain frequency, such as, certain frequency corresponding for 40HZ be the certain frequency that 5HZ, 30HZ are corresponding be that 3HZ, 25HZ are corresponding
Certain frequency 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, obtain outdoor environment
Current temperature；By the temperature sensor being disposed in the outdoor on machine or the temperature sensor survey being disposed in the outdoor other positions
Amount outdoor environment temperature, after entrance heats the defrost stage, obtains the temperature that outdoor environment is current in real time.
Judge the current temperature of outdoor environment whether fall into than determined by the high temperature range of temperature range；Temperature range
Can 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 high
In 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
The scope of falling into is 2, then the temperature that outdoor environment is current fall into than determined by the high temperature range of temperature range.Such as, upper one
It is 3 that the temperature of the outdoor environment of secondary measurement falls into scope, when the temperature of the outdoor environment of pre-test falls in the range of 2, then and room
The current temperature of external environment fall into than determined by the low temperature range of temperature range.
The temperature of acquired outdoor environment fall into than determined by temperature range higher temperature range time, reduce institute
The peak frequency determined is to corresponding predeterminated frequency, and controls air-conditioning with the frequency operation less than described predeterminated frequency；In outdoor
When the Current Temperatures of environment falls into a higher temperature range, need to reduce the predeterminated frequency that peak frequency is the most corresponding, described
Predeterminated frequency is arranged according to heat pump performance and user's request, such as, and the corresponding 40HZ of temperature range 1, the corresponding 30HZ of temperature range 2,
The corresponding 20HZ of temperature range 3, the corresponding 15HZ of temperature range 4 etc..
Temperature range determined by falling in the temperature of acquired outdoor environment, or fall into than determined by temperature range
During low temperature range, control air-conditioning and run with ongoing frequency.Temperature determined by falling in the temperature of acquired outdoor environment
Degree scope, or fall into than determined by temperature range low temperature range time, do not change the frequency of current operation.The present invention with
In preferred embodiment, the Current Temperatures in indoor environment is maintained at lower temperature scope and exceedes certain time (such as, 5 minutes or 8
Minute etc.), or less than this temperature range reach the standard grade value time, just rising peak frequency, i.e. rising current operation frequency.
Operation of air conditioner runs except limiting peak frequency, it is also possible to be to limit air-conditioning raising frequency speed.Determine air-conditioner outdoor unit
The raising frequency speed of running frequency；Being opened by compressor and count, compressor can be only achieved peak frequency, frequency through after a period of time
Can be according to linear the most at the uniform velocity raising frequency, it is also possible to non-at the uniform velocity jumping characteristic raising frequency (such as, arranges some frequency values as platform, at this
After needing to run certain time under a little frequency values platforms, if system does not breaks down, then raising frequency runs to next platform).
Because outdoor environment temperature is higher, frequency rise too fast if, cause the inaccurate (sensing of evaporator temperature sensor collecting temperature
Device is placed on evaporator external, and actual temperature internal with vaporizer exists the temperature difference and temporal delay).In the actual fortune of air-conditioning
In row, if compressor can persistently raise with a fixed frequency heating operation, the temperature of evaporator surface, i.e. reaching setting
Temperature after, 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, right
The running frequency of compressor is defined, i.e. by limiting the speed that evaporator temperature increases.Difference is set according to outdoor temperature
Raising frequency speed.After getting the temperature that outdoor environment is current, determine the raising frequency speed of correspondence.
Control air-conditioner outdoor unit and reduce the operation of raising frequency speed.After getting the raising frequency speed of compressor, control air conditioning chamber
Outer machine reduces raising frequency speed and runs.Such as, being up raising frequency speed under state with reference to Fig. 4, A line, B line is that high temperature heats down
Raising frequency speed, control 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. 5, Fig. 5 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: acquisition module 10, determine module
20, detection module 30 and control module 40.
Described acquisition module 10, after entering vaporizer automatically cleaning pattern at air-conditioning, is obtained from the operation residing for cleaning
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, residing during obtaining air-conditioning automatically cleaning
Operation phase 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, obtain residing for air-conditioning automatically cleaning
Stage can judge according to operation time or evaporator surface temperature.Such as, after air-conditioning enters automatically cleaning pattern, entered
(15 minutes or 20 minutes etc. according to each rank of automatically cleaning for first Preset Time that reach at runtime for cooling stages entered
Section) time, it is judged that enter the refrigeration frost stage in frosting stage, reach second Preset Time (30 minutes or 40 minutes etc. in operation
According to automatically cleaning each stage) time, enter and heat the defrost stage.
Described determine module 20, for determining temperature threshold corresponding to described operation phase；Getting described in automatically cleaning
Operation phase after, determine temperature threshold corresponding to described operation phase.Described temperature threshold sets in advance, according to heat pump performance
Different and set, and corresponding different operational mode temperature threshold is different, heating mode can be arranged not with the temperature of refrigeration mode
With, and the temperature threshold under refrigeration mode is less than the temperature threshold under heating mode.
Described detection module 30, is used for detecting ambient temperature；Described ambient temperature can be that indoor environment temperature can also
It is outdoor environment temperature, is detected by the temperature sensor arranged under various circumstances.After getting ambient temperature, by environment
Temperature and described temperature threshold comparison, to judge whether coupling, certainly, temperature threshold is corresponding with the residing operation phase.Example
As, when freezing the frosting stage, indoor environment temperature less than temperature threshold (such as, for-10 degree or-15 degree or 5 degree etc. according to sky
Tonality can be arranged), determine that ambient temperature is mated with described temperature threshold；Such as, when heating the stage, indoor temperature is more than temperature
Threshold value (such as, be 35 degree or 40 degree or 45 degree etc. and arrange according to heat pump performance), determines ambient temperature and described temperature threshold
Join.
Described control module 40, for when described ambient temperature is mated with described temperature threshold, control air-conditioning with institute
State mode operation corresponding to operation phase.
Concrete, when described ambient temperature mate with described temperature threshold, 1) it is frosting of freezing in the described operation phase
Time, and when described ambient temperature is less than described temperature threshold, it is determined that described ambient temperature is mated with described temperature threshold, controls sky
Adjust and run in a chiller mode；2) the described operation phase for heating the stage time, and described ambient temperature is more than described temperature threshold
Time, it is determined that described ambient temperature is mated with described temperature threshold, controls air-conditioning and runs with heating mode, under freezing or heating,
Described temperature threshold is different.Control air-conditioning to include with the mode operation corresponding with the described operation phase: 1) when refrigeration, control by force
Air-conditioning processed enters refrigerating operaton；2) when heating, heating mode operation is entered for controlling air-conditioning by force.The present embodiment is by sky
Adjusting in the middle of automatically cleaning process, detect ambient temperature, when the temperature threshold corresponding with the operation phase in ambient temperature mates, it is right to enter
The mode operation that operation phase answers, i.e. be forced into refrigeration or heating mode, cannot complete certainly to avoid compressor of air conditioner to shut down
Cleaning stage.By entering compulsory mode so that air-conditioning also is able in the environment of abnormal (ambient temperature is too high or overheated)
Complete air-conditioning automatically cleaning process, improve air-conditioning and experience.
In a preferred embodiment of the present invention, in order to more accurately control air-conditioning automatically cleaning run, protection compressor not by
Damaging, with reference to Fig. 6, described device also includes: judge module 50,
In cooling mode, described detection module 30, for the temperature that sensing chamber's external environment is current；By being disposed in the outdoor
The temperature sensor detection outdoor environment temperature of environment.
Described judge module 50, for judging that whether the current temperature of outdoor environment is less than the first setting threshold value；Described
One sets threshold value as the temperature arranged according to heat pump performance, such as, for-20 degree or-25 degree etc., this first design temperature it
Under, the compressor of air-conditioning can start supercool protection, prevents compressor damage, causes air-conditioning fault.
Described control module 40, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value less than first, control
Air-conditioning 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
Limit the raising frequency speed of air-conditioner outdoor unit, too fast with prevent air-conditioner outdoor unit frequency from rising, cause temperature too low, compressor damages
Bad.
Further, in a heating mode, described detection module 30, it is additionally operable to the temperature that sensing chamber's external environment is current；
Described judge module 50, is additionally operable to judge that whether the current temperature of outdoor environment is more than the second setting threshold value；Described
Second sets threshold value as the temperature arranged according to heat pump performance, such as, is 40 degree or 50 degree etc., this second design temperature it
On, the compressor of air-conditioning can start overtemperature protection, prevents system pressure excessive, and compressor damage causes air-conditioning fault.
Described control module 40, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value more than second, control
Air-conditioning limit frequency runs, and described second sets threshold value more than the first setting threshold value.Described control air-conditioner outdoor unit limit frequency runs, permissible
Limit the real-time frequency of air-conditioner outdoor unit, it is also possible to be the raising frequency speed limiting air-conditioner outdoor unit, to prevent air-conditioner outdoor unit frequency
It is the fastest that rate rises.
Concrete, the scheme heating lower control limit frequency includes: determine described outdoor temperature according to default temperature range
Temperature range；Outdoor temp angle value T is divided into different regions, i.e. be divided into different intervals, and different interval correspondences sets
Put 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.
Determine the peak frequency that the temperature range of described outdoor temperature is corresponding；Getting outdoor temperature and affiliated temperature
After scope, determine the peak frequency of correspondence.
Control air-conditioner outdoor unit to run with the frequency less than described peak frequency.Control air-conditioning with less than described peak frequency
Frequency run, such as, when outdoor temperature is 56 degree, control air-conditioning with less than 25HZ frequency run, such as, at outdoor temp
When degree 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 control air-conditioning
Compressor be not damaged by, after determining peak frequency, by described peak frequency reduce certain frequency run, described certain frequency
Can be 2HZ or 3HZ etc., described certain frequency can be correspondingly arranged according to peak frequency, and such as, each peak frequency correspondence is not
With certain frequency, such as, certain frequency corresponding for 40HZ be the certain frequency that 5HZ, 30HZ are corresponding be that 3HZ, 25HZ are corresponding
Certain frequency 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, obtain outdoor environment
Current temperature；By the temperature sensor being disposed in the outdoor on machine or the temperature sensor survey being disposed in the outdoor other positions
Amount outdoor environment temperature, after entrance heats the defrost stage, obtains the temperature that outdoor environment is current in real time.
Judge the current temperature of outdoor environment whether fall into than determined by the high temperature range of temperature range；Temperature range
Can 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 high
In 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
The scope of falling into is 2, then the temperature that outdoor environment is current fall into than determined by the high temperature range of temperature range.Such as, upper one
It is 3 that the temperature of the outdoor environment of secondary measurement falls into scope, when the temperature of the outdoor environment of pre-test falls in the range of 2, then and room
The current temperature of external environment fall into than determined by the low temperature range of temperature range.
The temperature of acquired outdoor environment fall into than determined by temperature range higher temperature range time, reduce institute
The peak frequency determined is to corresponding predeterminated frequency, and controls air-conditioning with the frequency operation less than described predeterminated frequency；In outdoor
When the Current Temperatures of environment falls into a higher temperature range, need to reduce the predeterminated frequency that peak frequency is the most corresponding, described
Predeterminated frequency is arranged according to heat pump performance and user's request, such as, and the corresponding 40HZ of temperature range 1, the corresponding 30HZ of temperature range 2,
The corresponding 20HZ of temperature range 3, the corresponding 15HZ of temperature range 4 etc..
Temperature range determined by falling in the temperature of acquired outdoor environment, or fall into than determined by temperature range
During low temperature range, control air-conditioning and run with ongoing frequency.Temperature determined by falling in the temperature of acquired outdoor environment
Degree scope, or fall into than determined by temperature range low temperature range time, do not change the frequency of current operation.The present invention with
In preferred embodiment, the Current Temperatures in indoor environment is maintained at lower temperature scope and exceedes certain time (such as, 5 minutes or 8
Minute etc.), or less than this temperature range reach the standard grade value time, just rising peak frequency, i.e. rising current operation frequency.
Operation of air conditioner runs except limiting peak frequency, it is also possible to be to limit air-conditioning raising frequency speed.Determine air-conditioner outdoor unit
The raising frequency speed of running frequency；Being opened by compressor and count, compressor can be only achieved peak frequency, frequency through after a period of time
Can be according to linear the most at the uniform velocity raising frequency, it is also possible to non-at the uniform velocity jumping characteristic raising frequency (such as, arranges some frequency values as platform, at this
After needing to run certain time under a little frequency values platforms, if system does not breaks down, then raising frequency runs to next platform).
Because outdoor environment temperature is higher, frequency rise too fast if, cause the inaccurate (sensing of evaporator temperature sensor collecting temperature
Device is placed on evaporator external, and actual temperature internal with vaporizer exists the temperature difference and temporal delay).In the actual fortune of air-conditioning
In row, if compressor can persistently raise with a fixed frequency heating operation, the temperature of evaporator surface, i.e. reaching setting
Temperature after, 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, right
The running frequency of compressor is defined, i.e. by limiting the speed that evaporator temperature increases.Difference is set according to outdoor temperature
Raising frequency speed.After getting the temperature that outdoor environment is current, determine the raising frequency speed of correspondence.
Control air-conditioner outdoor unit and reduce the operation of raising frequency speed.After getting the raising frequency speed of compressor, control air conditioning chamber
Outer machine reduces raising frequency speed and runs.Such as, being up raising frequency speed under state with reference to Fig. 4, A line, B line is that high temperature heats down
Raising frequency speed, control 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 in the middle of air-conditioning automatically cleaning process, detect ambient temperature, in ambient temperature and operation phase pair
During the temperature threshold coupling answered, the mode operation that the entrance operation phase is corresponding, i.e. be forced into refrigeration or heating mode, to keep away
Exempt from compressor of air conditioner shutdown and cannot complete the automatically cleaning stage.By entering compulsory mode so that air-conditioning is in abnormal (ambient temperature
Too high or overheated) in the environment of also be able to air-conditioning automatically cleaning process, 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, it is obtained from the operation phase residing for cleaning, and determines the described operation phase
Corresponding temperature threshold；
Detection ambient temperature；
When described ambient temperature is mated with described temperature threshold, control air-conditioning with the pattern fortune corresponding with the described operation phase
OK.
2. the self-cleaning control method of A/C evaporator as claimed in claim 1, it is characterised in that described detection ambient temperature
Afterwards, also include:
When the described operation phase is refrigeration frosting, and when described ambient temperature is less than described temperature threshold, it is determined that described environment
Temperature is mated with described temperature threshold.
3. the self-cleaning control method of A/C evaporator as claimed in claim 2, it is characterised in that described control air-conditioning with
Mode operation corresponding to described operation phase includes:
The temperature that sensing chamber's external environment is current；
Judge that whether the current temperature of outdoor environment is less than the first setting threshold value；
When the temperature that described outdoor environment is current sets threshold value less than first, control air-conditioning limit frequency and run.
4. the self-cleaning control method of A/C evaporator as claimed in claim 1, it is characterised in that described detection ambient temperature
Afterwards, also include:
The described operation phase for heating the stage time, and described ambient temperature more than described temperature threshold time, it is determined that described environment
Temperature is mated with described temperature threshold.
5. the self-cleaning control method of A/C evaporator as claimed in claim 4, it is characterised in that described control air-conditioning with
Mode operation corresponding to described operation phase includes:
The temperature that sensing chamber's external environment is current；
Judge that whether the current temperature of outdoor environment is more than the second setting threshold value；
When the temperature that described outdoor environment is current sets threshold value more than second, control air-conditioning limit frequency and run, described second setting
Threshold value is more than the first setting threshold value.
6. an A/C evaporator self-cleaning control device, it is characterised in that including:
Acquisition module, after entering vaporizer automatically cleaning pattern at air-conditioning, is obtained from the operation phase residing for cleaning；
Determine module, be used for determining the temperature threshold that the described operation phase is corresponding；
Detection module, is used for detecting ambient temperature；
Control module, for when described ambient temperature is mated with described temperature threshold, control air-conditioning with the described operation phase
Corresponding mode operation.
7. A/C evaporator self-cleaning control device as claimed in claim 6, it is characterised in that described control module, also
For the described operation phase for refrigeration frosting time, and described ambient temperature less than described temperature threshold time, it is determined that described environment
Temperature is mated with described temperature threshold.
8. A/C evaporator self-cleaning control device as claimed in claim 7, it is characterised in that also include: judge module,
Described detection module, is additionally operable to the temperature that sensing chamber's external environment is current；
Described judge module, for judging that whether the current temperature of outdoor environment is less than the first setting threshold value；
Described control module, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value less than first, control air-conditioning limit
Frequency runs.
9. A/C evaporator self-cleaning control device as claimed in claim 8, it is characterised in that described control module, also
For the described operation phase for heating the stage time, and described ambient temperature more than described temperature threshold time, it is determined that described environment
Temperature is mated with described temperature threshold, and under freezing or heating, described temperature threshold is different.
10. A/C evaporator self-cleaning control device as claimed in claim 9, it is characterised in that described detection module, also
For the temperature that sensing chamber's external environment is current；
Described judge module, is additionally operable to judge that whether the current temperature of outdoor environment is more than the second setting threshold value；
Described control module, is additionally operable to, when the temperature that described outdoor environment is current sets threshold value more than second, control air-conditioning limit
Frequency runs, and described second sets threshold value more than the first setting threshold value.
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| CN110848922A (en) * | 2019-11-29 | 2020-02-28 | 广东美的制冷设备有限公司 | Air conditioner and self-cleaning control method and device thereof |
| CN112146234A (en) * | 2019-06-26 | 2020-12-29 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
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