CN106839301A - Air-conditioner defrosting logic control method and device - Google Patents
Air-conditioner defrosting logic control method and device Download PDFInfo
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- CN106839301A CN106839301A CN201710054499.8A CN201710054499A CN106839301A CN 106839301 A CN106839301 A CN 106839301A CN 201710054499 A CN201710054499 A CN 201710054499A CN 106839301 A CN106839301 A CN 106839301A
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- Prior art keywords
- air
- conditioner
- temperature sensor
- outdoor
- environment temperature
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Classifications
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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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The present invention discloses a kind of air-conditioner defrosting logic control method, and the method includes when air-conditioner operation is heated：Detect the outdoor coil temperature sensor of air-conditioner and the failure situation of outdoor environment temperature sensor；It is determined that Defrost mode corresponding with the failure situation of outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner.The present invention remains able to enter defrosting mode in outdoor coil temperature sensor or outdoor environment temperature sensor failure, effectively defrosted, therefore the present invention can solve the problem that in outdoor coil temperature sensor or outdoor environment temperature sensor failure air-conditioning cannot be introduced into the problem of defrosting mode.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to air-conditioner defrosting logic control method and device.
Background technology
When heating, when outdoor environment temperature is below the freezing point, the water vapour in air will for heat pump type air conditioning system
Condensed in heat exchanger surface, change over time can form frost layer in heat exchanger surface, and frosting directly increases heat exchanger
Heat transfer resistance between surface and moving air so that reduced by the rate of air circulation of heat exchanger, heat exchange efficiency reduction, cause be
System heat exchange amount declines, and the heating condition of system deteriorates, so that taking steps to defrosting.
Current air-conditioner defrosting is the defrosting combined using outdoor coil temperature sensor and outdoor environment temperature sensor
Control method, when outdoor coil temperature sensor or outdoor environment temperature sensor failure, air-conditioner cannot be introduced into removing
White pattern, it is impossible to carry out the defrosting of air-conditioning, influences the heating effect of air-conditioning.
The content of the invention
The embodiment of the invention provides a kind of air-conditioner defrosting logic control method and device, it is intended to how solve in outdoor
Air-conditioning cannot be introduced into the problem of defrosting mode when coil temperature sensor or outdoor environment temperature sensor failure.In order to right
Some aspects of the embodiment of disclosure have a basic understanding, shown below is simple summary.The summarized section is not general
General commentary, nor to determine key/critical component or describe the protection domain of these embodiments.Its sole purpose is to use
Simple form is presented some concepts, in this, as the preamble of following detailed description.
First aspect according to embodiments of the present invention, there is provided a kind of air-conditioner defrosting logic control method, air-conditioner fortune
The method includes when row is heated：Detect the outdoor coil temperature sensor of air-conditioner and the failure feelings of outdoor environment temperature sensor
Condition；It is determined that defrosting side corresponding with the failure situation of outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner
Formula.
Second aspect according to embodiments of the present invention, there is provided a kind of air-conditioner defrosting logic control device, fault distinguishing device
And processor；Fault distinguishing device is used for the event of the outdoor coil temperature sensor and outdoor environment temperature sensor for detecting air-conditioner
Barrier situation；Processor is used to determine the outdoor coil temperature sensor and the failure feelings of outdoor environment temperature sensor with air-conditioner
The corresponding Defrost mode of condition.
Technical scheme provided in an embodiment of the present invention can include the following benefits：
In the present invention, when operation of air conditioner is heated, outdoor coil pipe used temperature sensor and outdoor environment temperature are detected first
The failure situation of sensor, and determined according to the failure situation of outdoor coil temperature sensor and outdoor environment temperature sensor it is right
The Defrost mode answered, can be according to outdoor coil temperature sensor and the different faults of outdoor environment temperature sensor in the present invention
Situation determines different defrosting control modes, in outdoor coil temperature sensor or outdoor environment temperature sensor failure
Remain able to enter defrosting mode, effectively defrosted, therefore the present invention can solve the problem that in outdoor coil temperature sensor or room
Air-conditioning cannot be introduced into the problem of defrosting mode when external environment temperature sensor breaks down.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets implementation of the invention
Example, and be used to explain principle of the invention together with specification.
Fig. 1 is a kind of schematic flow sheet of air-conditioner defrosting logic control method according to an exemplary embodiment；
Fig. 2 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in determine Defrost mode
Schematic flow sheet；
Fig. 3 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in determine Defrost mode
Schematic flow sheet；
Fig. 4 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in determine Defrost mode
Schematic flow sheet；
Fig. 5 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in determine Defrost mode
Schematic flow sheet；
Fig. 6 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in exit defrosting mode
Schematic flow sheet；
Fig. 7 be according to an exemplary embodiment a kind of air-conditioner defrosting logic control method in exit defrosting mode
Schematic flow sheet；
Fig. 8 is a kind of structural representation of air-conditioner defrosting logic control device according to an exemplary embodiment.
Description of reference numerals：1st, processor；2nd, fault distinguishing device.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional, and
And the order of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The gamut of the scope of embodiment of the present invention including claims, and claims institute
There is obtainable equivalent.Herein, each embodiment can individually or generally be represented that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than, it is not meant to automatically limit the scope of the application
It is any single invention or inventive concept.Herein, such as first and second or the like relational terms are used only for one
Entity or operation make a distinction with another entity or operation, exist between these entities or operation without requiring or implying
Any actual relation or order.And, term " including ", "comprising" or its any other variant be intended to it is non-exclusive
Property include so that process, method or equipment including a series of key elements not only include those key elements, but also including
Other key elements being not expressly set out.Each embodiment herein is described by the way of progressive, and each embodiment is stressed
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For example disclosed structure, product etc., because it is corresponding with part disclosed in embodiment, so fairly simple, the phase of description
Part is closed referring to method part illustration.
The embodiment of the present invention discloses a kind of air-conditioner defrosting logic control method, it is intended to solve outdoor coil temperature sensor
Or during outdoor environment temperature sensor failure, air-conditioner cannot be introduced into defrosting mode, cannot carry out the problem of air-conditioner defrosting,
In order to solve the problem, as shown in figure 1, a kind of air-conditioner defrosting logic control method includes：
Step S101：Detect the outdoor coil temperature sensor of air-conditioner and the failure feelings of outdoor environment temperature sensor
Condition.
Step S102：It is determined that outdoor coil temperature sensor and the failure feelings of outdoor environment temperature sensor with air-conditioner
The corresponding Defrost mode of condition.
In the present invention, when operation of air conditioner is heated, outdoor coil pipe used temperature sensor and outdoor environment temperature are detected first
The failure situation of sensor, and determined according to the failure situation of outdoor coil temperature sensor and outdoor environment temperature sensor it is right
The Defrost mode answered, can be according to outdoor coil temperature sensor and the different faults of outdoor environment temperature sensor in the present invention
Situation determines different defrosting control modes, in outdoor coil temperature sensor or outdoor environment temperature sensor failure
Remain able to enter defrosting mode, effectively defrosted, therefore the present invention can solve the problem that in outdoor coil temperature sensor or room
Air-conditioning cannot be introduced into the problem of defrosting mode when external environment temperature sensor breaks down.
In the above-described embodiments, step S101's has various implementation methods, as the optional implementation of one of which, when
When can't detect outdoor coil temperature sensor signal, outdoor coil temperature sensor fault is determined；It is outdoor coil pipe used when detecting
During temperature sensor signal, determine that outdoor coil temperature sensor does not break down；Passed when can't detect outdoor environment temperature
During sensor signal, outdoor environment temperature sensor fault is determined；When outdoor environment temperature sensor signal is detected, room is determined
External environment temperature sensor does not break down.As another optional step S102 implementation methods, can also be according to outdoor
The RST of coil temperature sensor determines whether outdoor coil temperature sensor breaks down, when outdoor coil temperature sensing
When the abnormal signal of device or excessive fluctuation, outdoor coil temperature sensor failure is determined, same can also be according to outdoor
The RST of environment temperature sensor determines whether outdoor environment temperature sensor breaks down, when outdoor environment temperature sensing
When device abnormal signal or excessive fluctuation, outdoor environment temperature sensor failure is determined.
In the above-described embodiments, as a kind of optional implementation methods of step S102, as shown in Fig. 2 working as failure situation bag
Include：When the outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner do not break down, it is determined that and failure
The corresponding Defrost mode of situation includes：
Step S201：Obtain compressor continuous operation time t1.
Step S202：Obtain outdoor coil temperature Tp2 and outdoor environment temperature Tr2.
Step S203：When t1 is small less than or equal to compressor continuous operation time setting value, Tn=C*Tr2- α and Tp2 or
When equal to Tn, control air-conditioner enters defrosting mode, and wherein Tn is solidifying dew-point temperature, and C is outdoor environment coefficient, and α is frosting
Coefficient.
In the present embodiment, when the outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner are not sent out
During raw failure, t1, Tp2 and Tr2 are obtained, Tn, that is, solidifying dew-point temperature now can be derived that according to Tr2, when Tp2 is less than or equal to
During Tn, easily there is solidifying frost in outdoor unit surface, when t1 is less than or equal to compressor operating time setting value, illustrate that compressor is transported
Turn that the time is more long, generate more heat exchange amount, absorb amount of heat, determine that outdoor unit surface occurs solidifying frost, control air-conditioning
Device enters defrosting, therefore in the present embodiment, when the outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner
When not breaking down, air-conditioner smoothly can enter defrosting mode when outdoor unit occurs frosting, effectively improve air-conditioning
Heating effect.
It is optional in the above-described embodiments, when t1 less than or equal to compressor operating time setting value, Tn=C*Tr2- α,
And Tp2 is small or when equal to Tn, Defrost mode corresponding with failure situation also includes：When Tp2 sets more than or equal to the 5th temperature
During definite value, the air-conditioner is controlled to exit defrosting mode.
When Tp2 is more than or equal to five desired temperatures, Tp2 is higher than a temperature value higher, and Tp2 is higher, is judged
The frost for going out outdoor unit surface has been eliminated, therefore control air-conditioning exits defrosting mode, makes air-conditioner be exited as early as possible when frostization is complete
Defrosting mode, improves the heating effect of air-conditioning.Wherein the 5th desired temperature can be taken between 1 DEG C to 20 DEG C, do not limited herein
Fixed, those skilled in the art can be set according to actual conditions, such as the outdoor environment temperature when air conditioner heat-production runs
Degree it is higher when, air-conditioner outdoor unit surface be difficult to occur frosting, then the 5th desired temperature can set it is relatively low, such as 1 DEG C,
5 DEG C etc., opposite, when when air conditioner heat-production runs, outdoor environment temperature is relatively low, air-conditioner outdoor unit surface is susceptible to knot
Frost, the heating effect of defrosting mode influence air-conditioner is frequently entered in order to avoid air-conditioner, and the 5th desired temperature can be set
It is higher, such as 18 DEG C, 20 DEG C etc., specific numerical value does not constitute limitation of the invention.
In the above-described embodiments, as another optional implementation methods of step S102, as shown in figure 3, working as failure situation
Including：The outdoor coil temperature sensor of air-conditioner does not break down and outdoor environment temperature sensor failure, or empty
When adjusting the outdoor coil temperature sensor and outdoor environment temperature sensor of device to break down, it is determined that corresponding with failure situation
Defrost mode includes：
Step S301：Obtain indoor coil pipe Tp1.
Step S302：Obtain the continuous operation time t2 of outdoor fan of air conditioner.
Step S303：When t2 is more than or equal to blower fan duration of runs setting value, and Tp1 sets less than or equal to the first temperature
During value, control air-conditioner enters defrosting mode.
In the present embodiment, in the case of air conditioner heat-production, when Tp1 is more than or equal to six desired temperatures, close chamber
Outer blower fan.Because when Tp1 is more than or equal to six desired temperatures, Tp1 is higher than a temperature higher, be disclosure satisfy that
Current indoor heats needs, thus closes off outdoor fan, and now outdoor heat exchanger surface temperature declines, and outdoor unit is susceptible to
Frost.In the case of air conditioner heat-production, when Tp1 is less than or equal to the first desired temperature, outdoor fan is opened.This be because
It is that Tp1 is less than a relatively low temperature, it is impossible to enough meet current indoor when Tp1 is less than or equal to the first desired temperature
Heat needs, it is therefore desirable to open outdoor fan.When t2 be more than or equal to the blower fan duration of runs setting value when, Tp1 still less than
Or equal to the first desired temperature, illustrate the need for it can not still meet indoor heating after one section of longer time, air-conditioning
Device heat exchange efficiency declines, and outdoor unit occurs frosting, and control air-conditioner enters defrosting mode.Therefore when the outdoor coil pipe used temperature of air-conditioner
Degree sensor is not broken down and outdoor environment temperature sensor failure, or the outdoor coil temperature of air-conditioner is sensed
When device and outdoor environment temperature sensor break down, air-conditioner remains able to smoothly enter defrosting mode, effectively improves sky
The heating effect of tune.
In the above-described embodiments, as a kind of optional embodiment, the first desired temperature can take 20 DEG C to 40 DEG C it
Between, not limiting herein, those skilled in the art can be set according to actual conditions, as long as disclosure satisfy that when Tp1 is small
Judge when the first desired temperature indoor coil heat exchange amount can not meet interior heat needs, for example work as sky
When adjusting the heating operation environment temperature of device higher, indoor heat exchange demand is relatively low, and the first desired temperature can select relatively low value,
It is opposite when the heating operation environment temperature of air-conditioner is relatively low, the first desired temperature can select value higher, such as 36
DEG C, 40 DEG C etc., specific numerical value does not constitute limitation of the invention.Likewise, the 6th desired temperature can take 30 DEG C arriving
Between 60 DEG C of, do not limit here, judge interior when Tp1 is more than or equal to six desired temperatures as long as disclosure satisfy that
The heat exchange amount of coil pipe can not meet indoor heating needs, such as indoor when air conditioner heat-production operating ambient temperature is higher
Heating needs are relatively low, and the 6th desired temperature can take relatively low value, such as 40 DEG C etc., opposite, when air conditioner heat-production operation
When environment temperature is relatively low, the 6th desired temperature can take value higher, and such as 55 DEG C etc., specific numerical value is not constituted to this
The restriction of invention.Blower fan duration of runs setting value can be 1~20 minute, not limit herein, such as when air conditioner heat-production is transported
When row environment temperature is higher, indoor heating demand is relatively low, and the time that the outdoor fan operating of air-conditioner is shorter just disclosure satisfy that room
Interior heating needs, blower fan duration of runs setting value can take relatively low value, such as 5 minutes, 8 minutes etc., opposite, work as air-conditioner
When environment temperature is relatively low during heating operation, indoor heating demand is higher, and the outdoor fan of air-conditioner needs to run longer time
Can meet indoor heating demand, therefore the blower fan duration of runs can take value higher, such as 18 DEG C, 20 DEG C etc., specifically
Numerical value does not constitute limitation of the invention, and those skilled in the art can be set according to actual conditions.
In the above-described embodiments, as another optional implementation methods of step S102, as shown in figure 4, working as failure situation
Including：The outdoor coil temperature sensor of air-conditioner does not break down and outdoor environment temperature sensor failure, or empty
When adjusting the outdoor coil temperature sensor and outdoor environment temperature sensor of device to break down, it is determined that corresponding with failure situation
Defrost mode includes：
Step S401：Obtain indoor coil pipe Tp1.
Step S402：Obtain compressor continuous operation time t1.
Step S403：When t1 is more than or equal to compressor operating time setting value, and Tp1 sets less than or equal to second temperature
During definite value, control air-conditioner enters defrosting mode.
In the present invention, when air-conditioner operation is heated, the continuous operation time t1 of compressor is obtained, when t1 is more than or waits
When compressor operating time setting value, it was demonstrated that compressor operating time is more long, a large amount of high pressure gaseous refrigerants are generated, this
When Tp1 should be higher, when Tp1 be less than or equal to desired temperature, illustrate that Tp1 is relatively low, air-conditioner heat transfer rate decline, outdoor unit table
There is frosting in face, therefore control air-conditioner enters defrosting mode.Therefore when the outdoor coil temperature sensor of air-conditioner is not sent out
Raw failure and outdoor environment temperature sensor failure, or air-conditioner outdoor coil temperature sensor and outdoor environment temperature
When degree sensor breaks down, air-conditioner remains able to smoothly enter defrosting mode, effectively improves the heating effect of air-conditioning.Its
Middle compressor continuous operation time setting value can between 20~60 minutes value, do not limit herein, for example work as air-conditioner
When the operating ambient temperature for heating is higher, indoor heating demand is relatively low, therefore compressor operating time setting value can set
Shorter, such as 20 minutes, 22 minutes etc., when the operating ambient temperature of air conditioner heat-production is relatively low, indoor heating demand was higher, because
It is more long that this compressor operating time setting value can set, such as 50 minutes, 55 minutes etc., specific setting value not structure
Into limitation of the invention, those skilled in the art can be set according to the actual requirements in specific implementation process.Temperature
Degree setting value can carry out value between 25 DEG C~60 DEG C, not limit herein.
Optionally, step S403 has various implementations in the above-described embodiments, used as the optional embodiment party of one of which
Formula, second temperature setting value includes：T1, T2 and T3, and T1 is less than T2, T2 is less than T3.When air conditioner chamber's inner blower wind speed is height
During wind, second temperature setting value is T1；When air conditioner chamber's inner blower wind speed is apoplexy, second temperature setting value is T2；Work as sky
When adjusting device indoor fan wind speed for low wind, second temperature setting value is T3.
In the present embodiment, in heating operations, the wind speed of indoor fan is higher, and Tp1 is lower for air-conditioner, therefore according to room
The difference of inner blower wind speed, sets different desired temperatures, and second temperature setting value includes T1, T2 and T3, and T1, T2 and T3
Raised with the reduction of wind speed, contribute to air-conditioner more accurately to judge whether outdoor unit occurs frost, and according to
Judged result control air-conditioner enters defrosting mode such that it is able to improves the defrosting effect of air-conditioner, and ensures the system of air-conditioner
Thermal effect.Wherein T1 can carry out value between 15 DEG C~40 DEG C, and T2 can carry out value between 20 DEG C~50 DEG C, and T3 can
Value is carried out between 25 DEG C~60 DEG C, is not limited herein, as long as meeting T1 less than T2, T2 is less than T3, this area
Technical staff can be set according to actual conditions in specific implementation process.
Optionally in the above-described embodiments, include as a kind of optional embodiment step S403：Continuously transported in compressor
Turn in the time, when Tp1 every the first setting time decline the first design temperature a and it is continuous decline at least twice, t1 is more than or waits
When compressor operating time setting value and Tp1 are less than or equal to second temperature setting value, control air-conditioner enters defrosting mould
Formula.In the present embodiment, when outdoor unit occurs frosting, air-conditioner heat transfer rate declines, and Tp1 continuously declines, thus when Tp1 every
First setting time declines a degree and continuously declines when at least twice, illustrates that Tp1 is in and continuously declines state, and outdoor unit is tied
Frost, control air-conditioner enters defrosting mode, and the present embodiment can more accurately judge whether outdoor unit occurs frosting, and and
When control air-conditioner enter defrosting mode, can further improve the defrosting effect of air-conditioner.
In the above-described embodiments, as another optional implementation methods of step S102, as shown in figure 5, working as defrosting situation
Including：The outdoor coil temperature sensor of air-conditioner does not break down and outdoor environment temperature sensor failure, or empty
When adjusting the outdoor coil temperature sensor and outdoor environment temperature sensor of device to break down, it is determined that corresponding with failure situation
Defrost mode includes：
Step S501：Obtain indoor coil pipe Tp1.
Step S502：Obtain indoor environment temperature Tp3.
Step S503：Obtain compressor continuous operation time t1.
Step S504：When the difference of Tp1 and Tp3 is more than or equal to compressor less than or equal to the 3rd desired temperature, t1
When continuous operation time setting value and Tp1 are less than or equal to four desired temperatures, control air-conditioner enters defrosting mode.
In the present invention, when operation of air conditioner is heated, t1 is obtained, when t1 sets more than or equal to compressor continuous operation time
During definite value, it was demonstrated that compressor operating time is more long, a large amount of high pressure gaseous refrigerants are generated, Tp1 should be higher.Obtain Tp1
And Tp3, when the difference between Tp1 and Tp3 is less than or equal to three desired temperatures, illustrate that Tp1 and Tp3 is approached, illustrate Tp1
Amount of heat is not lost because Tp3 is too low, when Tp1 is less than or equal to four desired temperatures, illustrates that air-conditioner is changed
Heating rate declines, and outdoor unit surface occurs frosting, and the difference for only meeting Tp1 and Tp3 in the present invention simultaneously is less than or equal to the 3rd
Desired temperature, when Tp1 is less than or equal to four desired temperatures, just controls air-conditioner to enter defrosting mode, it is to avoid due to Tp3
The too low Tp1 for causing is relatively low, but heat transfer rate does not decline, outdoor to occur to control air-conditioner to be made into defrosting mode during frosting
Into heating effect decline.The outdoor coil temperature sensor that the present invention can work as air-conditioner does not break down and outdoor ring
Border temperature sensor breaks down, or the outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner occur event
During barrier, more accurately judge air-conditioner whether frosting, and air-conditioner occur frosting when control air-conditioner smoothly enter remove
White pattern, improves the heating effect of air-conditioner.Wherein compressor operating time setting value is as described above, here is omitted.The
Three desired temperatures are less than the 4th desired temperature, and the 3rd desired temperature can carry out value between 1 DEG C~20 DEG C, herein
Do not limit, the 3rd desired temperature can be set according to environment temperature in specific implementation process, work as environment temperature
When higher, Tp3 is higher, therefore difference between Tp1 and Tp3 is relatively low, and the 3rd temperature value is set within the scope of relatively low, conversely
, when the temperature of the surroundings is low, Tp3 is relatively low, there is larger difference between Tp1 and Tp3, and the 3rd temperature value is set in higher
Within the scope of.4th desired temperature can carry out value between 25 DEG C~60 DEG C, not limit herein, specific implementation process
In the 4th desired temperature can be set according to environment temperature, when environment temperature is higher, the 4th desired temperature sets
It is scheduled within temperature range higher, opposite, when the temperature of the surroundings is low, the 4th desired temperature is set in relatively low temperature
Within the scope of.
In any of the above-described embodiment, when failure situation includes：The outdoor coil temperature sensor of air-conditioner and outdoor ring
Border temperature sensor does not break down；Or the outdoor coil temperature sensor of air-conditioner does not break down and outdoor
When environment temperature sensor breaks down, as shown in fig. 6, determining that Defrost mode corresponding with failure situation also includes：
Step S601：Obtain the outer coil temperature Tp2 of air-conditioner.
Step S602：When Tp2 is more than or equal to five desired temperatures, control air-conditioner exits defrosting mode.
In the present embodiment, when Tp2 is more than or equal to five desired temperatures, outdoor coil pipe used temperature higher than one compared with
Temperature value high, outdoor coil temperature is higher, judges that the frost on outdoor unit surface has been eliminated, therefore control air-conditioning exits defrosting mould
Formula, makes air-conditioner exit defrosting mode as early as possible when frostization is complete, improves the heating effect of air-conditioning.Wherein the 5th desired temperature
Determination as described above, here is omitted.
In any of the above-described embodiment, as shown in fig. 7, when failure situation includes the outdoor coil temperature sensor of air-conditioner
When being broken down with outdoor environment temperature sensor, it is determined that Defrost mode corresponding with failure situation also includes：
Step S701：The continuous operation time t5 of compressor under acquisition defrosting mode.
Step S702：When t5 is more than or equal to compressor defrosting operating time setting value, control air-conditioner exits defrosting
Pattern.
In the above-described embodiments, when t5 is more than or equal to compressor defrosting operating time setting value, illustrate that air-conditioner enters
After entering defrosting mode, the continuous operation time of compressor is more long, and the frost of air-conditioner outdoor unit has been eliminated, therefore control air-conditioner is moved back
Go out defrosting mode, be favorably improved the heating effect of air-conditioning.Wherein compressor defrosting operating time setting value can be at 5~30 points
Value is carried out between clock, is not limited herein, such as when operation environment of air conditioner temperature is relatively low, air-conditioner outdoor unit frosting can
Can be more serious, therefore the continuous operating time of compressor should be more long under defrosting mode, compressor defrosting operating time setting value
What can be set is more long, such as 25 minutes, 30 minutes etc., opposite, when operation of air conditioner environment temperature is higher, outside air conditioner chamber
The continuous operating time that machine is not susceptible to compressor under frosting, therefore defrosting mode should be shorter, the compressor defrosting operating time
It is shorter that setting value can set, such as 5 minutes, 10 minutes etc., specific numerical value and not enough restriction of the invention in pairs, ability
The technical staff in domain can be set in specific implementation process according to actual conditions.
Second embodiment of the invention discloses a kind of air-conditioner defrosting logic control device, as shown in figure 8, including：Failure is sentenced
Other device 2 and processor 1, fault distinguishing device 2 are used to detect that the outdoor coil temperature sensor and outdoor environment temperature of air-conditioner to be passed
The failure situation of sensor；Processor 1 is used to determine outdoor coil temperature sensor and the outdoor environment temperature sensing with air-conditioner
The corresponding Defrost mode of failure situation of device.
In the present invention, when operation of air conditioner is heated, outdoor coil pipe used temperature sensor and outdoor environment temperature are detected first
The failure situation of sensor, and determined according to the failure situation of outdoor coil temperature sensor and outdoor environment temperature sensor it is right
The Defrost mode answered, can be according to outdoor coil temperature sensor and the different faults of outdoor environment temperature sensor in the present invention
Situation determines different Defrost modes, in outdoor coil temperature sensor or outdoor environment temperature sensor failure still
Defrosting mode can be entered, effectively defrosted, therefore the present invention can solve the problem that in outdoor coil temperature sensor or outdoor ring
Air-conditioning cannot be introduced into the problem of defrosting mode when border temperature sensor breaks down.
Optionally, in the above-described embodiments, method of the fault distinguishing device 2 in above method embodiment differentiates air-conditioner
Outdoor coil temperature sensor and outdoor environment temperature sensor whether break down.
Optionally, in any of the above-described air-conditioner defrosting logic control device embodiment, processor 1 is used to according to above-mentioned side
Method in method embodiment determines Defrost mode corresponding with failure situation.
It should be appreciated that specific setting value and not enough restriction of the invention in pairs in the present invention, the present invention is not
The flow and structure for being described above and being shown in the drawings are confined to, and can without departing from the scope carry out various repairing
Change and change.The scope of the present invention is only limited by appended claim.
Claims (11)
1. a kind of air-conditioner defrosting logic control method, it is characterised in that methods described includes when the air-conditioner operation is heated：
Detect the outdoor coil temperature sensor of the air-conditioner and the failure situation of outdoor environment temperature sensor；
It is determined that corresponding with the outdoor coil temperature sensor of the air-conditioner and the failure situation of outdoor environment temperature sensor
Defrost mode.
2. the method for claim 1, it is characterised in that the outdoor coil temperature sensor of the detection air-conditioner
With the failure situation of outdoor environment temperature sensor, including：
When can't detect the outdoor coil temperature sensor signal of the air-conditioner, the outdoor coil pipe used temperature of the air-conditioner is determined
Degree sensor fault；
When can't detect the outdoor environment temperature sensor signal of the air-conditioner, the outdoor environment temperature of the air-conditioner is determined
Degree sensor fault.
3. the method for claim 1, it is characterised in that the failure situation includes：The air-conditioner it is outdoor coil pipe used
Temperature sensor and outdoor environment temperature sensor do not break down；
Defrost mode corresponding with the failure situation includes：Compressor continuous operation time t1 is obtained, outdoor coil pipe used temperature is obtained
Degree Tp2 and outdoor environment temperature Tr2；When the t1 less than or equal to compressor operating time setting value, Tn=C*Tr2- α and
The Tp2 is small or when equal to Tn, controls the air-conditioner to enter defrosting mode, and wherein Tn is solidifying dew-point temperature, and C is outdoor ring
Border coefficient, α is frosting coefficient.
4. the method for claim 1, it is characterised in that the failure situation includes：The air-conditioner it is outdoor coil pipe used
Temperature sensor does not break down and outdoor environment temperature sensor failure, or the air-conditioner outdoor coil pipe used temperature
Degree sensor and outdoor environment temperature sensor break down；
Defrost mode corresponding with the failure situation includes：Obtain indoor coil pipe；Obtain the outdoor wind of the air-conditioner
Machine continuous operation time；When the outdoor fan continuous operation time of the air-conditioner sets more than or equal to the blower fan duration of runs
Value and when the indoor coil pipe is less than or equal to the first desired temperature, controls the air-conditioner to enter defrosting mode.
5. the method for claim 1, it is characterised in that the failure situation includes：
The outdoor coil temperature sensor of the air-conditioner does not break down and outdoor environment temperature sensor failure,
Or the outdoor coil temperature sensor and outdoor environment temperature sensor of the air-conditioner break down；
Defrost mode corresponding with the failure situation includes：Obtain indoor coil pipe；Obtain the compressor of the air-conditioner
Continuous operation time；When the compressor continuous operation time is more than or equal to compressor operating time setting value and the room
When inner coil pipe temperature is less than or equal to second temperature setting value, the air-conditioner is controlled to enter defrosting mode.
6. method as claimed in claim 5, it is characterised in that when the compressor continuous operation time is more than or equal to compression
When machine duration of runs setting value and the indoor coil pipe are less than or equal to second temperature setting value, with the failure situation
Corresponding Defrost mode, also includes：
In the compressor continuous operation time, set when the indoor coil pipe declines first every the first setting time
Temperature and it is continuous decline when at least twice, control the air-conditioner to enter defrosting mode.
7. the method for claim 1, it is characterised in that the failure situation, including：
The outdoor coil temperature sensor of the air-conditioner does not break down and outdoor environment temperature sensor failure,
Or the outdoor coil temperature sensor and outdoor environment temperature sensor of the air-conditioner break down；
Defrost mode corresponding with the failure situation, including：
Obtain indoor coil pipe；Obtain indoor environment temperature；Obtain the compressor continuous operation time of air-conditioner；
When the indoor coil pipe is less than or equal to the 3rd desired temperature, the sky with the difference of the indoor environment temperature
The compressor continuous operation time of device is adjusted to be less than more than or equal to compressor operating time setting value and the indoor coil pipe
Or during equal to four desired temperatures, control the air-conditioner to enter defrosting mode.
8. the method as described in claim 5 to 7 any claim, it is characterised in that when the failure situation include it is described
It is corresponding with the failure situation when outdoor coil temperature sensor and outdoor environment temperature sensor of air-conditioner break down
Defrost mode also include：
Obtain the compressor continuous operation time of the air-conditioner under the defrosting mode；
When the compressor continuous operation time of the air-conditioner under the defrosting mode is more than or equal to compressor defrosting operating
Between setting value when, control the air-conditioner to exit the defrosting mode.
9. a kind of air-conditioner defrosting logic control device, it is characterised in that including：Fault distinguishing device and processor；
The fault distinguishing device is used to detect the outdoor coil temperature sensor and outdoor environment temperature sensor of the air-conditioner
Failure situation；
The processor is used to determining and the outdoor coil temperature sensor of the air-conditioner and outdoor environment temperature sensor
The corresponding Defrost mode of failure situation.
10. device as claimed in claim 9, it is characterised in that the fault distinguishing device is used to according to described in claim 2
Method differentiates whether the outdoor coil temperature sensor and outdoor environment sensor of the air-conditioner break down.
11. devices as claimed in claim 9, it is characterised in that the processor is used to according to any power of claim 3 to 8
Method during profit is required determines Defrost mode corresponding with the failure situation.
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| CN201710054499.8A CN106839301A (en) | 2017-01-24 | 2017-01-24 | Air-conditioner defrosting logic control method and device |
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| CN201710054499.8A CN106839301A (en) | 2017-01-24 | 2017-01-24 | Air-conditioner defrosting logic control method and device |
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| CN109297139A (en) * | 2018-09-13 | 2019-02-01 | 海信科龙电器股份有限公司 | A kind of defrosting control method and device |
| CN109798634A (en) * | 2019-01-30 | 2019-05-24 | 海信家电集团股份有限公司 | A kind of Defrost method and air conditioner of air conditioner |
| CN110836482A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
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Application publication date: 20170613 |