CN106369771A - Control method and control device for air conditioner freezing prevention as well as air conditioner - Google Patents
Control method and control device for air conditioner freezing prevention as well as air conditioner Download PDFInfo
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- CN106369771A CN106369771A CN201610970966.7A CN201610970966A CN106369771A CN 106369771 A CN106369771 A CN 106369771A CN 201610970966 A CN201610970966 A CN 201610970966A CN 106369771 A CN106369771 A CN 106369771A
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- conditioner
- air
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- temperature value
- steaming
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device for air conditioner freezing prevention as well as an air conditioner, wherein the control method for the air conditioner freezing prevention comprises the following steps of: when the air conditioner is in a non-heating mode, detecting an evaporation temperature value of each flow path in an indoor evaporator; comparing the evaporation temperature values of the flow paths, and determining a minimal evaporation temperature value Tmin; and controlling an operation state of the air conditioner according to the minimal evaporation temperature value Tmin. According to the technical scheme adopted by the invention, a freezing prevention protection function is controlled more precisely at a low temperature under low pressure, so that the problem that freezing prevention protection loses efficacy or has faults due to the fact that the indoor evaporator in the air conditioner has bias-flow or generates bias-flow under different working conditions is avoided, and the evaporator is effectively prevented from being frosted and iced, and therefore, the air conditioner is prevented from having faults, and use comfort level and degree of satisfaction of users are improved.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of control method of air-conditioner anti-freeze and control
Device, further relates to a kind of air-conditioner.
Background technology
At present, air-conditioner is under non-heating mode, especially when outdoor environment temperature is relatively low, due to vaporizer itself partially
In flowing or occur under different operating modes bias current to lead to steam, temperature value judges distortion, causes the erroneous judgement of anti-freeze function, delay execution
Even do not execute, directly influenced the normal use of user.
Therefore, how the anti-freeze of control air-conditioner more accurately and timely becomes technical problem urgently to be resolved hurrily at present
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
For this reason, it is an object of the present invention to proposing a kind of control method of air-conditioner anti-freeze.
Further object is that proposing a kind of control device of air-conditioner anti-freeze.
A further object of the present invention is to propose a kind of air-conditioner.
In view of this, the present invention proposes a kind of control method of air-conditioner anti-freeze, and air-conditioner includes compressor, interior
Vaporizer, indoor fan, outdoor fan, this indoor evaporator has multiple streams it is characterised in that the control of air-conditioner anti-freeze
Method processed includes: when air-conditioner is in non-heating mode, temperature value in the steaming of each stream in detection indoor evaporator；By each stream
In the steaming on road, temperature value is compared, and determines temperature value t in minimum steamingmin；According to temperature value t in minimum steamingminControl air-conditioner
Running status.
The control method of the air-conditioner anti-freeze according to the present invention, when air-conditioner is in non-heating mode, by detection
Temperature value in the steaming of each stream of indoor evaporator, temperature in minimum steaming is determined in contrast, and controls air-conditioner according to its value
Running status it is achieved that be more precisely controlled anti-freeze defencive function in low-temp low-pressure, it is to avoid because of steaming indoor in air-conditioner
Send out device bias current to occur or occurs bias current to lead to the problem of anti-freeze shielding failure or error under different operating modes, effectively prevent
Only evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improves user's comfort and satisfaction.
In addition, according to the control method of the above-mentioned air-conditioner anti-freeze of the present invention, can also have the technology added as follows
Feature:
It is preferable that controlling the running status of air-conditioner specifically to wrap according to temperature value in minimum steaming in technique scheme
Include: judge temperature value t in minimum steamingminWith the first predetermined threshold value ts1And second predetermined threshold value ts2Relation；If tmin≤ts1, and
Continue preset duration, then control air-conditioner to enter anti-freeze protection, close compressor and outdoor fan, make indoor fan according to pre-
If wind speed runs；If tmin＞ ts2, and continue preset duration, then control air-conditioner to exit anti-freeze protection, make compressor and outdoor
Blower fan normally runs.
In this technical scheme, by protecting temperature value to be contrasted with default temperature value in minimum steaming, according to comparing
The running status of output control air-conditioner, if temperature value is less than or equal to the first predetermined threshold value in minimum steaming, and continues pre-
If duration, illustrate that in air-conditioner, indoor evaporator temperature is too low, now control air-conditioner to enter anti-freeze defencive function, close pressure
Contracting machine and outdoor fan, make indoor fan run according to default wind speed it is achieved that be more precisely controlled antifreeze in low-temp low-pressure
Knot defencive function, it is to avoid because indoor evaporator bias current or occurs bias current to lead to anti-freeze under different operating modes in air-conditioner
Shielding failure or the problem of error, are effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improve
User's comfort and satisfaction.If in minimum steaming, temperature value is more than the second predetermined threshold value, and continues preset duration, explanation
In air-conditioner, indoor evaporator temperature suitably raises, then control air-conditioner to exit anti-freeze protection, make compressor and outdoor fan
Normal operation, lifting user's comfort and satisfaction further.
It is preferable that the first predetermined threshold value t in technique schemes1Less than the second predetermined threshold value ts2.
In this technical scheme, by arranging the first predetermined threshold value ts1With the second predetermined threshold value ts2Two default protection temperature
Angle value, and the first predetermined threshold value ts1Less than the second predetermined threshold value ts2, for more precisely, timely controlling air-conditioner anti-freeze
Defencive function provides condition.
It is preferable that preset duration is 5 minutes in technique scheme.
In this technical scheme, it should be appreciated by those skilled in the art that preset duration is 5 minutes, but not limited to this, permissible
According to practical situation, preset duration is carried out with different duration settings, is beneficial to and more precisely, timely controls air-conditioner antifreeze
Knot defencive function.
It is preferable that each stream has at least one temperature sensor in technique scheme.
In this technical scheme, each stream by indoor evaporator in air-conditioner arranges at least one temperature and passes
Sensor, can detect temperature in the steaming of each stream, and then by contrasting temperature value in each steaming, determines temperature in minimum steaming
Value, and control the running status of air-conditioner according to temperature value in minimum steaming, air-conditioner anti-freeze is more precisely controlled with realization and protects
Protective function, efficiently avoid because in air-conditioner, indoor evaporator bias current or occurs bias current to lead to prevent under different operating modes
The problem that freeze protection lost efficacy or slipped up, is effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down,
Improve service life and the Consumer's Experience of air-conditioner.
It is preferable that non-heating mode includes refrigeration mode, dehumidifier pattern in technique scheme.
In this technical scheme, it should be appreciated by those skilled in the art that non-heating mode include but is not limited to refrigeration mode,
Dehumidifier pattern.
The present invention also proposes a kind of control device of air-conditioner anti-freeze, and air-conditioner includes compressor, indoor evaporator, room
Inner blower, outdoor fan, this indoor evaporator has multiple streams it is characterised in that the control device bag of air-conditioner anti-freeze
Include: detector unit, for when air-conditioner is in non-heating mode, detecting temperature value in the steaming of each stream in indoor evaporator；
Comparing unit, for being compared temperature value in the steaming of each stream, determines temperature value t in minimum steamingmin；Control unit, is used for
According to temperature value t in minimum steamingminControl the running status of air-conditioner.
The control device of the air-conditioner anti-freeze according to the present invention, when air-conditioner is in non-heating mode, by detection
Temperature value in the steaming of each stream of indoor evaporator, temperature in minimum steaming is determined in contrast, and controls air-conditioner according to its value
Running status it is achieved that be more precisely controlled anti-freeze defencive function in low-temp low-pressure, it is to avoid because of steaming indoor in air-conditioner
Send out device bias current to occur or occurs bias current to lead to the problem of anti-freeze shielding failure or error under different operating modes, effectively prevent
Only evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improves user's comfort and satisfaction.
In addition, according to the control device of the above-mentioned air-conditioner anti-freeze of the present invention, can also have the technology added as follows
Feature:
It is preferable that control unit controls the operation shape of air-conditioner according to temperature value in minimum steaming in technique scheme
State specifically includes: judging unit, for judging temperature value t in described minimum steamingminWith the first predetermined threshold value ts1And the second default threshold
Value ts2Relation；If tmin≤ts1, and continue preset duration, then control air-conditioner enter anti-freeze protection, close compressor and
Outdoor fan, makes indoor fan run according to default wind speed；If tmin＞ ts2, and continue preset duration, then control air-conditioner to exit
Anti-freeze is protected, and so that compressor and outdoor fan is normally run.
In this technical scheme, by protecting temperature value to be contrasted with default temperature value in minimum steaming, according to comparing
The running status of output control air-conditioner, if temperature value is less than or equal to the first predetermined threshold value in minimum steaming, and continues pre-
If duration, illustrate that in air-conditioner, indoor evaporator temperature is too low, now control air-conditioner to enter anti-freeze defencive function, close pressure
Contracting machine and outdoor fan, make indoor fan run according to default wind speed it is achieved that be more precisely controlled antifreeze in low-temp low-pressure
Knot defencive function, it is to avoid because indoor evaporator bias current or occurs bias current to lead to anti-freeze under different operating modes in air-conditioner
Shielding failure or the problem of error, are effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improve
User's comfort and satisfaction.If in minimum steaming, temperature value is more than the second predetermined threshold value, and continues preset duration, explanation
In air-conditioner, indoor evaporator temperature suitably raises, then control air-conditioner to exit anti-freeze protection, make compressor and outdoor fan
Normal operation, lifting user's comfort and satisfaction further.
It is preferable that the first predetermined threshold value t in technique schemes1Less than the second predetermined threshold value ts2.
In this technical scheme, by arranging the first predetermined threshold value ts1With the second predetermined threshold value ts2Two default protection temperature
Angle value, and the first predetermined threshold value ts1Less than the second predetermined threshold value ts2, for more precisely, timely controlling air-conditioner anti-freeze
Defencive function provides condition.
It is preferable that preset duration is 5 minutes in technique scheme.
In this technical scheme, it should be appreciated by those skilled in the art that preset duration is 5 minutes, but not limited to this, permissible
According to practical situation, preset duration is carried out with different duration settings, is beneficial to and more precisely, timely controls air-conditioner antifreeze
Knot defencive function.
It is preferable that each stream has at least one temperature sensor in technique scheme.
In this technical scheme, each stream by indoor evaporator in air-conditioner arranges at least one temperature and passes
Sensor, can detect temperature in the steaming of each stream, and then by contrasting temperature value in each steaming, determines temperature in minimum steaming
Value, and control the running status of air-conditioner according to temperature value in minimum steaming, air-conditioner anti-freeze is more precisely controlled with realization and protects
Protective function, efficiently avoid because in air-conditioner, indoor evaporator bias current or occurs bias current to lead to prevent under different operating modes
The problem that freeze protection lost efficacy or slipped up, is effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down,
Improve service life and the Consumer's Experience of air-conditioner.
It is preferable that non-heating mode includes refrigeration mode, dehumidifier pattern in technique scheme.
In this technical scheme, it should be appreciated by those skilled in the art that non-heating mode include but is not limited to refrigeration mode,
Dehumidifier pattern.
The present invention also proposes a kind of air-conditioner, including the control dress of the air-conditioner anti-freeze in any of the above-described technical scheme
Put.By the control device of this air-conditioner anti-freeze it is achieved that being more precisely controlled anti-freeze defencive function in low-temp low-pressure,
Avoid because in air-conditioner indoor evaporator occur bias current or under different operating modes occur bias current lead to anti-freeze shielding failure or
The problem of person's error, is effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improves user using easypro
Appropriateness and satisfaction.
The additional aspect of the present invention and advantage will become obvious in following description section, or by the practice of the present invention
Recognize.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein:
Fig. 1 shows the schematic flow sheet of the control method of air-conditioner anti-freeze according to an embodiment of the invention；
Fig. 2 shows that the flow process of the control method of air-conditioner anti-freeze according to still a further embodiment is illustrated
Figure；
Fig. 3 shows that the flow process of the control method of the air-conditioner anti-freeze of a specific embodiment according to the present invention is illustrated
Figure；
Fig. 4 shows the schematic block diagram of the control device of air-conditioner anti-freeze according to an embodiment of the invention；
Fig. 5 shows the schematic block diagram of the control device of air-conditioner anti-freeze according to still a further embodiment；
Fig. 6 shows the schematic block diagram of air-conditioner according to an embodiment of the invention.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specifically real
Mode of applying is further described in detail to the present invention.It should be noted that in the case of not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Elaborate a lot of details in the following description in order to fully understand the present invention, but, the present invention also may be used
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not described below
Specific embodiment restriction.
As shown in figure 1, the schematic flow sheet of the control method of air-conditioner anti-freeze according to an embodiment of the invention:
Step 102, when air-conditioner is in non-heating mode, temperature value in the steaming of each stream in detection indoor evaporator；
Step 104, temperature value in the steaming of each stream is compared, and determines temperature value t in minimum steamingmin；
Step 106, according to temperature value t in minimum steamingminControl the running status of air-conditioner.
In this embodiment, when air-conditioner is in non-heating mode, in the steaming by the detection each stream of indoor evaporator
Temperature value, temperature in the steaming of minimum is determined in contrast, and controls the running status of air-conditioner according to its value it is achieved that in low temperature
More it is precisely controlled anti-freeze defencive function, it is to avoid because indoor evaporator bias current or in different works in air-conditioner during low pressure
Occur bias current to lead to the problem of anti-freeze shielding failure or error under condition, be effectively prevented evaporimeter frosting and icing, thus
Prevent air-conditioner from breaking down, improve user's comfort and satisfaction.
As shown in Fig. 2 the flow process of the control method of air-conditioner anti-freeze according to still a further embodiment is illustrated
Figure:
Step 202, when air-conditioner is in non-heating mode, temperature value in the steaming of each stream in detection indoor evaporator；
Step 204, temperature value in the steaming of each stream is compared, and determines temperature value t in minimum steamingmin；
Step 206, according to temperature value t in minimum steamingminControl the running status of air-conditioner；
Step 206 specifically includes:
Step 2062, judges temperature value t in minimum steamingminWith the first predetermined threshold value ts1And second predetermined threshold value ts2Pass
System；
Step 2064, if tmin≤ts1, and continue preset duration, then control air-conditioner to enter anti-freeze protection, close compression
Machine and outdoor fan, make indoor fan run according to default wind speed；
Step 2066, if tmin＞ ts2, and continue preset duration, then control air-conditioner to exit anti-freeze protection, make compressor
Normally run with outdoor fan.
In this embodiment, by protecting temperature value to be contrasted with default temperature value in minimum steaming, according to comparing knot
Fruit controls the running status of air-conditioner, if temperature value is less than or equal to the first predetermined threshold value in minimum steaming, and persistently presets
Duration, illustrates that in air-conditioner, indoor evaporator temperature is too low, now controls air-conditioner to enter anti-freeze defencive function, closes compression
Machine and outdoor fan, make indoor fan run according to default wind speed it is achieved that be more precisely controlled anti-freeze in low-temp low-pressure
Defencive function, it is to avoid because indoor evaporator bias current or occurs bias current to lead to anti-freeze to be protected under different operating modes in air-conditioner
The problem that shield lost efficacy or slipped up, is effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improving and using
Family comfort and satisfaction.If temperature value is more than the second predetermined threshold value in minimum steaming, and continues preset duration, sky is described
Adjust indoor evaporator temperature in device suitably to raise, then control air-conditioner to exit anti-freeze protection, just make compressor and outdoor fan
Often run, further lifting user's comfort and satisfaction.
In the above embodiment, it is preferable that the first predetermined threshold value ts1Less than the second predetermined threshold value ts2.
In this embodiment, by arranging the first predetermined threshold value ts1With the second predetermined threshold value ts2Two default protection temperature
Value, and the first predetermined threshold value ts1Less than the second predetermined threshold value ts2, for more precisely, timely controlling air-conditioner anti-freeze to protect
Protective function provides condition.
In the above embodiment, it is preferable that preset duration is 5 minutes.
In this embodiment, it should be appreciated by those skilled in the art that preset duration is 5 minutes, but not limited to this, Ke Yigen
According to practical situation, preset duration is carried out with different duration settings, be beneficial to and more precisely, timely control air-conditioner anti-freeze
Defencive function.
In the above embodiment, it is preferable that each stream has at least one temperature sensor.
In this embodiment, each stream by indoor evaporator in air-conditioner arranges at least one temperature sensing
Device, can detect temperature in the steaming of each stream, and then by contrasting temperature value in each steaming, determines temperature value in minimum steaming,
And the running status according to temperature value control air-conditioner in minimum steaming, to realize more being precisely controlled air-conditioner anti-freeze protection work(
Can, efficiently avoid because in air-conditioner, indoor evaporator bias current or occurs bias current to lead to anti-freeze under different operating modes
Shielding failure or the problem of error, are effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improve
The service life of air-conditioner and Consumer's Experience.
In the above embodiment, it is preferable that non-heating mode includes refrigeration mode, dehumidifier pattern.
In this embodiment, it should be appreciated by those skilled in the art that non-heating mode includes but is not limited to refrigeration mode, takes out
Wet model.
As shown in figure 3, being shown according to the flow process of the control method of the air-conditioner anti-freeze of a specific embodiment of the present invention
It is intended to:
Step 302, receives indoor set signal；
Step 304, judges whether air-conditioner is non-heating operation mode, if so, then execution step 306, otherwise returns and holds
Row step 302；
Step 306, temperature value during each stream steams in detection vaporizer；
Step 308, during each stream is steamed, temperature value sends to indoor fan control chip, determines temperature value in minimum steaming
tmin；
Step 310, according to temperature value t in minimum steamingminControl the running status of air-conditioner: judge temperature value in minimum steaming
tminWith the first predetermined threshold value ts1And second predetermined threshold value ts2Relation；If tmin≤ts1, and continue preset duration, then control empty
Adjust device to enter anti-freeze protection, close compressor and outdoor fan, so that indoor fan is run according to default wind speed；If tmin＞ ts2,
And continue preset duration, then control air-conditioner to exit anti-freeze protection, so that compressor and outdoor fan is normally run.
In this embodiment, air-conditioner is included by outdoor condenser, indoor evaporator, compressor, cross valve, indoor wind
The loop that machine, outdoor fan, throttling arrangement are constituted.Wherein, indoor evaporator has multiple streams, and each stream is respectively provided with one
Detect the temperature sensor of temperature value t in its steaming.After air conditioner room unit receives non-heating mode run signal, by controlling core
Piece judges whether air-conditioner is in non-heating mode and runs, and does not otherwise enter this anti-freeze control program.Air-conditioner is in non-system
During heat pattern, under refrigeration or dehumidifier pattern, during the detection each stream of vaporizer steams, temperature value ta, tb, tc (only note ta, tb, tc
Represent temperature in the steaming of each stream of the present embodiment, rather than the quantity limiting temperature value t in the steaming of vaporizer) and send to room
Interior machine control chip, obtains temperature value t in minimum steaming by contrastmin, according to temperature value t in minimum steamingminAdjust air-conditioner system
System runs, if continuing 5 minutes tmin≤ts1Then enter anti-freeze protection, close compressor and outdoor fan, make indoor fan by setting
Subduing the wind syndrome speed is run, if tmin>ts2, then exit protection anti-freeze, so that compressor and outdoor fan is normally run.The control of the present invention
Method be to current air-conditioner anti-freeze function optimize further so that anti-freeze defencive function execution more precisely and
When, preventing evaporimeter frosting, icing, thus preventing air-conditioner from breaking down, effectively improving the reliability of air-conditioner, lifting is used
Family uses comfort and satisfaction.
As shown in figure 4, the schematic block diagram of the control device of air-conditioner anti-freeze according to an embodiment of the invention:
Detector unit 402, for when air-conditioner is in non-heating mode, detecting in the steaming of each stream in indoor evaporator
Temperature value；
Comparing unit 404, for being compared temperature value in the steaming of each stream, determines temperature value t in minimum steamingmin；
Control unit 406, for according to temperature value t in minimum steamingminControl the running status of air-conditioner.
In this embodiment, when air-conditioner is in non-heating mode, in the steaming by the detection each stream of indoor evaporator
Temperature value, temperature in the steaming of minimum is determined in contrast, and controls the running status of air-conditioner according to its value it is achieved that in low temperature
More it is precisely controlled anti-freeze defencive function, it is to avoid because indoor evaporator bias current or in different works in air-conditioner during low pressure
Occur bias current to lead to the problem of anti-freeze shielding failure or error under condition, be effectively prevented evaporimeter frosting and icing, thus
Prevent air-conditioner from breaking down, improve user's comfort and satisfaction.
As shown in figure 5, the schematic block diagram of the control device of air-conditioner anti-freeze according to still a further embodiment:
Detector unit 502, for when air-conditioner is in non-heating mode, detecting in the steaming of each stream in indoor evaporator
Temperature value；
Comparing unit 504, for being compared temperature value in the steaming of each stream, determines temperature value t in minimum steamingmin；
Control unit 506, for according to temperature value t in minimum steamingminControl the running status of air-conditioner；
Judging unit 508, for judging temperature value t in described minimum steamingminWith the first predetermined threshold value ts1And the second default threshold
Value ts2Relation；
Control unit 506, if specifically for tmin≤ts1, and continue preset duration, then control air-conditioner to enter anti-freeze and protect
Shield, close compressor and outdoor fan, make indoor fan run according to default wind speed；If tmin＞ ts2, and continue preset duration,
Then control air-conditioner to exit anti-freeze protection, so that compressor and outdoor fan is normally run.
In this embodiment, by protecting temperature value to be contrasted with default temperature value in minimum steaming, according to comparing knot
Fruit controls the running status of air-conditioner, if temperature value is less than or equal to the first predetermined threshold value in minimum steaming, and persistently presets
Duration, illustrates that in air-conditioner, indoor evaporator temperature is too low, now controls air-conditioner to enter anti-freeze defencive function, closes compression
Machine and outdoor fan, make indoor fan run according to default wind speed it is achieved that be more precisely controlled anti-freeze in low-temp low-pressure
Defencive function, it is to avoid because indoor evaporator bias current or occurs bias current to lead to anti-freeze to be protected under different operating modes in air-conditioner
The problem that shield lost efficacy or slipped up, is effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improving and using
Family comfort and satisfaction.If temperature value is more than the second predetermined threshold value in minimum steaming, and continues preset duration, sky is described
Adjust indoor evaporator temperature in device suitably to raise, then control air-conditioner to exit anti-freeze protection, just make compressor and outdoor fan
Often run, further lifting user's comfort and satisfaction.
In the above embodiment, it is preferable that the first predetermined threshold value ts1Less than the second predetermined threshold value ts2.
In this embodiment, by arranging the first predetermined threshold value ts1With the second predetermined threshold value ts2Two default protection temperature
Value, and the first predetermined threshold value ts1Less than the second predetermined threshold value ts2, for more precisely, timely controlling air-conditioner anti-freeze to protect
Protective function provides condition.
In the above embodiment, it is preferable that preset duration is 5 minutes.
In this embodiment, it should be appreciated by those skilled in the art that preset duration is 5 minutes, but not limited to this, Ke Yigen
According to practical situation, preset duration is carried out with different duration settings, be beneficial to and more precisely, timely control air-conditioner anti-freeze
Defencive function.
In the above embodiment, it is preferable that each stream has at least one temperature sensor.
In this embodiment, each stream by indoor evaporator in air-conditioner arranges at least one temperature sensing
Device, can detect temperature in the steaming of each stream, and then by contrasting temperature value in each steaming, determines temperature value in minimum steaming,
And the running status according to temperature value control air-conditioner in minimum steaming, to realize more being precisely controlled air-conditioner anti-freeze protection work(
Can, efficiently avoid because in air-conditioner, indoor evaporator bias current or occurs bias current to lead to anti-freeze under different operating modes
Shielding failure or the problem of error, are effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from breaking down, improve
The service life of air-conditioner and Consumer's Experience.
In the above embodiment, it is preferable that non-heating mode includes refrigeration mode, dehumidifier pattern.
In this embodiment, it should be appreciated by those skilled in the art that non-heating mode includes but is not limited to refrigeration mode, takes out
Wet model.
As shown in fig. 6, the schematic block diagram of air-conditioner according to an embodiment of the invention: this air-conditioner 600 includes sky
Adjust the control device 602 of device anti-freeze.
In this embodiment, by the control device 602 of this air-conditioner anti-freeze it is achieved that more smart in low-temp low-pressure
Quasi- control anti-freeze defencive function, it is to avoid because indoor evaporator bias current or bias current occurs under different operating modes in air-conditioner
Lead to the problem of anti-freeze shielding failure or error, be effectively prevented evaporimeter frosting and icing, thus preventing air-conditioner from going out
Existing fault, improves user's comfort and satisfaction.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (13)
1. a kind of control method of air-conditioner anti-freeze, described air-conditioner includes compressor, indoor evaporator, indoor fan, room
Outer blower fan, described indoor evaporator has multiple streams it is characterised in that the control method of described air-conditioner anti-freeze includes:
When described air-conditioner is in non-heating mode, detect temperature value in the steaming of each stream in described indoor evaporator；
Temperature value in the steaming of described each stream is compared, determines temperature value t in minimum steamingmin；
According to temperature value t in described minimum steamingminControl the running status of described air-conditioner.
2. the control method of air-conditioner anti-freeze according to claim 1 is it is characterised in that described steam according to described minimum
Middle temperature value controls the running status of described air-conditioner to specifically include:
Judge temperature value t in described minimum steamingminWith the first predetermined threshold value ts1And second predetermined threshold value ts2Relation；
If tmin≤ts1, and continue preset duration, then control described air-conditioner to enter anti-freeze protection, close described compressor and
Described outdoor fan, makes described indoor fan run according to default wind speed；
If tmin＞ ts2, and continue preset duration, then control described air-conditioner to exit described anti-freeze protection, make described compressor
Normally run with described outdoor fan.
3. air-conditioner anti-freeze according to claim 2 control method it is characterised in that
Described first predetermined threshold value ts1Less than described second predetermined threshold value ts2.
4. air-conditioner anti-freeze according to claim 2 control method it is characterised in that
Described preset duration is 5 minutes.
5. air-conditioner anti-freeze according to claim 1 control method it is characterised in that
Each described stream has at least one temperature sensor.
6. air-conditioner anti-freeze according to any one of claim 1 to 5 control method it is characterised in that
Described non-heating mode includes refrigeration mode, dehumidifier pattern.
7. a kind of control device of air-conditioner anti-freeze, described air-conditioner includes compressor, indoor evaporator, indoor fan, room
Outer blower fan, described indoor evaporator has multiple streams it is characterised in that the control device of described air-conditioner anti-freeze includes:
Detector unit, for when described air-conditioner is in non-heating mode, detecting the steaming of each stream in described indoor evaporator
Middle temperature value；
Comparing unit, for being compared temperature value in the steaming of described each stream, determines temperature value t in minimum steamingmin；
Control unit, for according to temperature value t in described minimum steamingminControl the running status of described air-conditioner.
8. the control device of air-conditioner anti-freeze according to claim 7 is it is characterised in that described control unit is according to institute
Stating temperature value in minimum steaming controls the running status of described air-conditioner to specifically include:
Judging unit, for judging temperature value t in described minimum steamingminWith the first predetermined threshold value ts1And second predetermined threshold value ts2's
Relation；
If tmin≤ts1, and continue preset duration, then control described air-conditioner to enter anti-freeze protection, close described compressor and
Described outdoor fan, makes described indoor fan run according to default wind speed；
If tmin＞ ts2, and continue preset duration, then control described air-conditioner to exit described anti-freeze protection, make described compressor
Normally run with described outdoor fan.
9. air-conditioner anti-freeze according to claim 8 control device it is characterised in that
Described first predetermined threshold value ts1Less than described second predetermined threshold value ts2.
10. air-conditioner anti-freeze according to claim 8 control device it is characterised in that
Described preset duration is 5 minutes.
The control device of 11. air-conditioner anti-freezes according to claim 7 it is characterised in that
Each described stream has at least one temperature sensor.
The control device of the 12. air-conditioner anti-freezes according to any one of claim 7 to 11 it is characterised in that
Described non-heating mode includes refrigeration mode, dehumidifier pattern.
A kind of 13. air-conditioners are it is characterised in that include the control of air-conditioner anti-freeze as any one of claim 7 to 12
Device processed.
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| CN201610970966.7A CN106369771A (en) | 2016-10-31 | 2016-10-31 | Control method and control device for air conditioner freezing prevention as well as air conditioner |
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| CN201610970966.7A CN106369771A (en) | 2016-10-31 | 2016-10-31 | Control method and control device for air conditioner freezing prevention as well as air conditioner |
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| CN107152758A (en) * | 2017-05-22 | 2017-09-12 | 广东美的制冷设备有限公司 | Air conditioner anti-freeze protects control method and device |
| CN107166653A (en) * | 2017-05-27 | 2017-09-15 | 广东美的制冷设备有限公司 | Progress control method, operating control device and air conditioner |
| CN107202399A (en) * | 2017-05-17 | 2017-09-26 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN107401808A (en) * | 2017-07-14 | 2017-11-28 | 珠海格力电器股份有限公司 | Air-conditioner set anti-freeze protection control method, device and air-conditioner set |
| CN107525297A (en) * | 2017-08-22 | 2017-12-29 | 广东美的暖通设备有限公司 | Antifreeze control method, constant speed air-conditioning system and storage medium |
| CN108444046A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method for air conditioner |
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| CN109539386A (en) * | 2018-11-07 | 2019-03-29 | 南通鸿亨热控科技有限公司 | A kind of anti-freeze defroster of floor air conditioner |
| CN110173797A (en) * | 2019-05-29 | 2019-08-27 | 南京天加环境科技有限公司 | A kind of air conditioner and its control method for capableing of anti-non-return liquid |
| CN111457556A (en) * | 2020-04-21 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Anti-freezing protection method and device, air conditioner and computer readable storage medium |
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| CN112665164A (en) * | 2020-11-30 | 2021-04-16 | 珠海格力电器股份有限公司 | Control circuit of air conditioner and control method thereof |
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| CN114688628A (en) * | 2020-12-28 | 2022-07-01 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and readable storage medium |
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| CN109210698A (en) * | 2018-09-10 | 2019-01-15 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning freeze protection |
| CN109210698B (en) * | 2018-09-10 | 2020-11-03 | 青岛海尔空调器有限总公司 | Control method for air conditioner freezing protection |
| CN109539386A (en) * | 2018-11-07 | 2019-03-29 | 南通鸿亨热控科技有限公司 | A kind of anti-freeze defroster of floor air conditioner |
| CN109539386B (en) * | 2018-11-07 | 2021-01-15 | 南通鸿亨热控科技有限公司 | Anti-freezing and defrosting device of vertical air conditioner |
| CN110173797A (en) * | 2019-05-29 | 2019-08-27 | 南京天加环境科技有限公司 | A kind of air conditioner and its control method for capableing of anti-non-return liquid |
| CN112577155A (en) * | 2019-09-27 | 2021-03-30 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| WO2021093310A1 (en) * | 2019-11-14 | 2021-05-20 | 青岛海尔空调器有限总公司 | Freezing-prevention protection method and apparatus for air conditioner, and air conditioner |
| CN111457556A (en) * | 2020-04-21 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Anti-freezing protection method and device, air conditioner and computer readable storage medium |
| CN112665164A (en) * | 2020-11-30 | 2021-04-16 | 珠海格力电器股份有限公司 | Control circuit of air conditioner and control method thereof |
| CN114688628A (en) * | 2020-12-28 | 2022-07-01 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and readable storage medium |
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