CN105972758A - Defrosting control method and device for air conditioner and air conditioner - Google Patents
Defrosting control method and device for air conditioner and air conditioner Download PDFInfo
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- CN105972758A CN105972758A CN201610344981.0A CN201610344981A CN105972758A CN 105972758 A CN105972758 A CN 105972758A CN 201610344981 A CN201610344981 A CN 201610344981A CN 105972758 A CN105972758 A CN 105972758A
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- defrosting control
- conditioner
- air
- control logic
- logic
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting control method and device for an air conditioner and the air conditioner. The method comprises steps as follows: when the air conditioner runs in the heating mode, whether defrosting control can be performed on the air conditioner with first defrosting control logic or not is judged; if defrosting control can be performed on the air conditioner with the first defrosting control logic, defrosting control is performed on the air conditioner with the first defrosting control logic; and if defrosting control cannot be performed on the air conditioner with the first defrosting control logic, defrosting control is performed on the air conditioner with second defrosting control logic. With the adoption of the technical scheme, when default defrosting control logic of the air conditioner becomes invalid, defrosting control can be performed on the air conditioner continuously with standby defrosting control logic, then a system of the air conditioner can run in the heating mode continuously, the normal heating capacity of a unit is guaranteed, and the user experience can be improved.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to the defrosting control of a kind of air-conditioner
Method, the defrosting control device of a kind of air-conditioner and a kind of air-conditioner.
Background technology
At present, the technology relevant to air-conditioner propose multiple defrosting control method, but based on
The consideration of cost, generally employing control air-conditioner based on the refrigerant temperature in sensing chamber's external heat exchanger and are
No entrance and exit defrost.
In actual applications, when air conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to
Defrosting operation, easily the installation site of the sensor of the refrigerant temperature in sensing chamber's external heat exchanger occurs
The problem that humiture fluctuation is bigger, and then it is easily caused sensor fault.When sensor short circuit occurs, breaks
During the fault such as road, temperature drift, air-conditioner cannot normally complete defrost action, and then can be due to frost layer
Accumulation causes unit capacity and efficiency to decline, and can cause the air conditioning system cannot be properly functioning time serious.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose the defrosting control side of a kind of new air-conditioner
Method so that when the acquiescence defrosting control logic of air-conditioner lost efficacy, it is possible to by standby defrosting control
Logic continues to carry out air-conditioner defrosting control, and then is able to ensure that air-conditioner system persistently heats fortune
OK, it is ensured that the normal heating load of unit, be conducive to promoting the experience of user.
Further object is that correspondence proposes defrosting control device and the tool of a kind of air-conditioner
There is the air-conditioner of this defrosting control device.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of air-conditioning
The defrosting control method of device, including: when air-conditioner runs with heating mode, it may be judged whether Neng Goutong
Cross the first defrosting control logic and described air-conditioner is carried out defrosting control；If it is determined that can be by described the
One defrosting control logic carries out defrosting control to described air-conditioner, then patrolled by described first defrosting control
Collect and described air-conditioner is carried out defrosting control；If it is determined that can not be by described first defrosting control logic pair
Described air-conditioner carries out defrosting control, then by the second defrosting control logic to described air-conditioner
Frost controls.
The defrosting control method of air-conditioner according to an embodiment of the invention, air-conditioner can have multipleization
Frost controls logic, and the first defrosting control logic is the acquiescence defrosting control logic of air-conditioner.When judging energy
When enough air-conditioner being carried out defrosting control by the first defrosting control logic, can be directly by first
Defrosting control logic carries out defrosting control to air-conditioner, and can not pass through the first defrosting control in judgement
When logic carries out defrosting control to air-conditioner, by the second defrosting control logic, air-conditioner is carried out defrost
Control so that even if the acquiescence defrosting control logic of air-conditioner (first controls logic) lost efficacy, also can
Enough continue air-conditioner is carried out defrost control by standby defrosting control logic (second controls logic)
System, and then it is able to ensure that air-conditioner system continues heating operation, it is ensured that the normal heating load of unit, have
It is beneficial to promote the experience of user, it is to avoid air-conditioner uses single defrosting control logic
Frost controls and this defrosting control logic occurs extremely causing air conditioning unit ability and efficiency to decline, and causes sky
Adjusting system cannot be properly functioning problem.
In one embodiment of the invention, it is preferable that when judging can not to be patrolled by the first defrosting control
When volume air-conditioner being carried out defrosting control, alarm can be carried out, allow the user to find air-conditioning
System exist problem and process in time.Wherein it is possible to carried out by the form of sound and/or light
Alarm, can also show failure code simultaneously.
The defrosting control method of air-conditioner according to the abovementioned embodiments of the present invention, it is also possible to have following
Technical characteristic:
According to one embodiment of present invention, it may be judged whether can be by the first defrosting control logic to institute
State air-conditioner and carry out the step of defrosting control, specifically include: detection and described first defrosting control logic
Relevant sensor is the most abnormal；If the sensor relevant to described first defrosting control logic is normal,
Then judge by described first defrosting control logic, described air-conditioner to be carried out defrosting control；If with
The sensor abnormality that described first defrosting control logic is relevant, then judging can not be by described first defrost
Control logic and described air-conditioner is carried out defrosting control.
In this embodiment, when air conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to
, easily there is the problem that the humiture fluctuation of sensor mounting location is bigger, and then easily leads in defrosting operation
Cause sensor fault, therefore can be by whether detecting the sensor relevant to the first defrosting control logic
Extremely determine whether by the first defrosting control logic, air-conditioner to be carried out defrosting control.
According to one embodiment of present invention, relevant to described first defrosting control logic sensor is
For the temperature sensor that the temperature of the outdoor heat exchanger of described air-conditioner is detected.
In this embodiment, owing to can be conveniently realized air-conditioner by the temperature of outdoor heat exchanger
Defrosting control, and cost is relatively low, therefore can be by temperature based on outdoor heat exchanger
The logic defrosting control logic by default that frost controls, the i.e. first defrosting control logic, then with the
The temperature that the temperature to outdoor heat exchanger that is the sensor that one defrosting control logic is relevant detects passes
Sensor.
According to one embodiment of present invention, when the sensor relevant to the first defrosting control logic is for using
When the temperature sensor detecting the temperature of outdoor heat exchanger, described defrosting control method also wraps
Include: if described abnormality of temperature sensors being detected, then forbid that described air-conditioner runs in a chiller mode.
In this embodiment, owing to air-conditioner is when running in a chiller mode, the temperature of outdoor heat exchanger
Can be higher, need the temperature sensor using sensing chamber external heat exchanger temperature to carry out overheat protector, because of
This, by when this abnormality of temperature sensors being detected, forbids that air-conditioner runs in a chiller mode so that
It can be avoided that during the overheat protector mechanism exception of outdoor heat exchanger still refrigerating operaton and cause that safety occurs
Accident.
According to one embodiment of present invention, in described second defrosting control logic of passing through to described air-conditioning
Before device carries out the step of defrosting control, also include: all defrosts detecting the employing of described air-conditioner are patrolled
In Ji, whether other defrosting control logic in addition to described first defrost logic can be to described air-conditioner
Carry out defrosting control；Choose in other defrosting control logic described and described air-conditioner can be carried out defrost
The defrosting control logic controlled is as described second defrosting control logic.
In this embodiment, by choosing in other defrosting control logic and air-conditioner can be carried out defrost
The defrosting control logic controlled, as the second defrosting control logic (the most standby defrosting control logic), makes
Must be when the acquiescence defrosting control logic (the i.e. first defrosting control logic) of air-conditioner be abnormal, Ke Yixuan
Select can be properly functioning defrosting control logic air-conditioner is carried out defrosting control, and then be able to ensure that sky
Adjust device systems stay heating operation, it is ensured that the normal heating load of unit, be conducive to promoting the use of user
Experience.
Embodiment according to a second aspect of the present invention, it is also proposed that the defrosting control dress of a kind of air-conditioner
Put, including: judging unit, for when air-conditioner runs with heating mode, it may be judged whether Neng Goutong
Cross the first defrosting control logic and described air-conditioner is carried out defrosting control；Control unit, for described
Judging unit judges by described first defrosting control logic, described air-conditioner to be carried out defrosting control
Time, by described first defrosting control logic, described air-conditioner carried out defrosting control, and in institute
State judging unit to judge by described first defrosting control logic, described air-conditioner to be carried out defrost control
Time processed, by the second defrosting control logic, described air-conditioner is carried out defrosting control.
The defrosting control device of air-conditioner according to an embodiment of the invention, air-conditioner can have multipleization
Frost controls logic, and the first defrosting control logic is the acquiescence defrosting control logic of air-conditioner.When judging energy
When enough air-conditioner being carried out defrosting control by the first defrosting control logic, can be directly by first
Defrosting control logic carries out defrosting control to air-conditioner, and can not pass through the first defrosting control in judgement
When logic carries out defrosting control to air-conditioner, by the second defrosting control logic, air-conditioner is carried out defrost
Control so that even if the acquiescence defrosting control logic of air-conditioner (first controls logic) lost efficacy, also can
Enough continue air-conditioner is carried out defrost control by standby defrosting control logic (second controls logic)
System, and then it is able to ensure that air-conditioner system continues heating operation, it is ensured that the normal heating load of unit, have
It is beneficial to promote the experience of user, it is to avoid air-conditioner uses single defrosting control logic
Frost controls and this defrosting control logic occurs extremely causing air conditioning unit ability and efficiency to decline, and causes sky
Adjusting system cannot be properly functioning problem.
In one embodiment of the invention, it is preferable that when judging can not to be patrolled by the first defrosting control
When volume air-conditioner being carried out defrosting control, alarm can be carried out, allow the user to find air-conditioning
System exist problem and process in time.Wherein it is possible to carried out by the form of sound and/or light
Alarm, can also show failure code simultaneously.
The defrosting control device of air-conditioner according to the abovementioned embodiments of the present invention, it is also possible to have following
Technical characteristic:
According to one embodiment of present invention, described judging unit includes: the first detector unit, is used for
Detect the sensor relevant to described first defrosting control logic the most abnormal；Performance element, is used for
Described first detector unit detects when the sensor relevant to described first defrosting control logic is normal,
Judgement can carry out defrosting control by described first defrosting control logic to described air-conditioner, and is used for
The sensor abnormality relevant to described first defrosting control logic is detected in described first detector unit
Time, it is determined that by described first defrosting control logic, described air-conditioner can not be carried out defrosting control.
In this embodiment, when air conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to
, easily there is the problem that the humiture fluctuation of sensor mounting location is bigger, and then easily leads in defrosting operation
Cause sensor fault, therefore can be by whether detecting the sensor relevant to the first defrosting control logic
Extremely determine whether by the first defrosting control logic, air-conditioner to be carried out defrosting control.
According to one embodiment of present invention, relevant to described first defrosting control logic sensor is
For the temperature sensor that the temperature of the outdoor heat exchanger of described air-conditioner is detected.
In this embodiment, owing to can be conveniently realized air-conditioner by the temperature of outdoor heat exchanger
Defrosting control, and cost is relatively low, therefore can be by temperature based on outdoor heat exchanger
The logic defrosting control logic by default that frost controls, the i.e. first defrosting control logic, then with the
The temperature that the temperature to outdoor heat exchanger that is the sensor that one defrosting control logic is relevant detects passes
Sensor.
According to one embodiment of present invention, when the sensor relevant to the first defrosting control logic is for using
When the temperature sensor detecting the temperature of outdoor heat exchanger, described control unit is additionally operable to:
When described first detector unit detects described abnormality of temperature sensors, forbid that described air-conditioner is with system
Cold mode operation.
In this embodiment, owing to air-conditioner is when running in a chiller mode, the temperature of outdoor heat exchanger
Can be higher, need the temperature sensor using sensing chamber external heat exchanger temperature to carry out overheat protector, because of
This, by when this abnormality of temperature sensors being detected, forbids that air-conditioner runs in a chiller mode so that
It can be avoided that during the overheat protector mechanism exception of outdoor heat exchanger still refrigerating operaton and cause that safety occurs
Accident.
According to one embodiment of present invention, also include: the second detector unit, be used for detecting described sky
Adjust other defrosting control logic in addition to described first defrost logic in all defrost logics of device employing
Whether described air-conditioner can be carried out defrosting control；Select unit, be used for choosing other defrost described
Control logic can carry out the defrosting control logic of defrosting control as described second to described air-conditioner
Defrosting control logic.
In this embodiment, by choosing in other defrosting control logic and air-conditioner can be carried out defrost
The defrosting control logic controlled, as the second defrosting control logic (the most standby defrosting control logic), makes
Must be when the acquiescence defrosting control logic (the i.e. first defrosting control logic) of air-conditioner be abnormal, Ke Yixuan
Select can be properly functioning defrosting control logic air-conditioner is carried out defrosting control, and then be able to ensure that sky
Adjust device systems stay heating operation, it is ensured that the normal heating load of unit, be conducive to promoting the use of user
Experience.
Embodiment according to a third aspect of the present invention, it is also proposed that a kind of air-conditioner, including: as above-mentioned
The defrosting control device of the air-conditioner according to any one of embodiment.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Embodiment is retouched by the above-mentioned and/or additional aspect of the present invention and advantage from combining accompanying drawings below
Will be apparent from easy to understand in stating, wherein:
Fig. 1 shows the exemplary flow of the defrosting control method of air-conditioner according to an embodiment of the invention
Figure；
Fig. 2 is shown and judges whether according to an embodiment of the invention to be patrolled by the first defrosting control
Collect the schematic flow diagram that air-conditioner is carried out defrosting control；
Fig. 3 shows the schematic flow diagram of the control method of air-conditioner according to an embodiment of the invention；
Fig. 4 shows the schematic block of the defrosting control device of air-conditioner according to an embodiment of the invention
Figure；
Fig. 5 shows the schematic block diagram of the judging unit shown in Fig. 4；
Fig. 6 shows the schematic block diagram of air-conditioner according to an embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
Fig. 1 shows showing of the defrosting control method of air-conditioner according to first embodiment of the invention
Meaning flow chart.
As it is shown in figure 1, the defrosting control method of air-conditioner according to first embodiment of the invention,
Including:
Step S10, when air-conditioner runs with heating mode, it may be judged whether can pass through the first defrost
Control logic and described air-conditioner is carried out defrosting control.
In step slo, air-conditioner can have multiple defrosting control logic, the first defrosting control logic
For the acquiescence defrosting control logic of air-conditioner, i.e. when air-conditioner runs with heating mode, preferentially judge
Whether air-conditioner can be carried out defrosting control by its acquiescence defrosting control logic.
In one embodiment of the invention, as in figure 2 it is shown, step S10 specifically includes:
Step S101, detects the sensor relevant to described first defrosting control logic the most abnormal.
Step S102, if the sensor relevant to described first defrosting control logic is normal, then judges
By described first defrosting control logic, described air-conditioner can be carried out defrosting control.
Step S103, if the sensor abnormality relevant to described first defrosting control logic, then judges
By described first defrosting control logic, described air-conditioner can not be carried out defrosting control.
In this embodiment, when air conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to
, easily there is the problem that the humiture fluctuation of sensor mounting location is bigger, and then easily leads in defrosting operation
Cause sensor fault, therefore can be by whether detecting the sensor relevant to the first defrosting control logic
Extremely determine whether by the first defrosting control logic, air-conditioner to be carried out defrosting control.
As a preferred embodiment of the present invention, owing to can be facilitated by the temperature of outdoor heat exchanger
Ground realizes the defrosting control to air-conditioner, and cost is relatively low, therefore can be by based on outdoor heat exchanger
Temperature carry out the logic of defrosting control defrosting control logic by default, the i.e. first defrosting control
Logic, then the sensor relevant to the first defrosting control logic is the temperature to outdoor heat exchanger and enters
The temperature sensor of row detection.
Defrosting control method shown in Fig. 1, also includes:
Step S12, if it is determined that can carry out described air-conditioner by described first defrosting control logic
Defrosting control, then carry out defrosting control by described first defrosting control logic to described air-conditioner.
In step s 12, can be by the first defrosting control logic to air-conditioner when judgement
When frost controls, directly by the first defrosting control logic, air-conditioner can be carried out defrosting control.
Step S14, if it is determined that can not carry out described air-conditioner by described first defrosting control logic
Defrosting control, then carry out defrosting control by the second defrosting control logic to described air-conditioner.
In step S14, by air-conditioner not being carried out by the first defrosting control logic in judgement
During defrosting control, use the second defrosting control logic that air-conditioner is carried out defrosting control so that even if empty
The acquiescence defrosting control logic (first controls logic) adjusting device lost efficacy, it is also possible to by standby defrost
Control logic (second controls logic) to continue air-conditioner is carried out defrosting control, and then be able to ensure that sky
Adjust device systems stay heating operation, it is ensured that the normal heating load of unit, be conducive to promoting the use of user
Experience, it is to avoid air-conditioner uses single defrosting control logic to carry out defrosting control and this defrosting control
Logic occurs abnormal causing air conditioning unit ability and efficiency to decline, and causes the air conditioning system cannot be properly functioning
Problem.
According to one embodiment of present invention, can not be by the first defrosting control logic to air-conditioning when judgement
When device carries out defrosting control, alarm can be carried out, allow the user to find that air conditioning system exists
Problem and process in time.Carry wherein it is possible to carry out warning by the form of sound and/or light
Show, failure code can also be shown simultaneously.
According to one embodiment of present invention, in step S14 by the second defrosting control logic to institute
Before stating the step that air-conditioner carries out defrosting control, also include: detect all of described air-conditioner employing
In defrost logic, whether other defrosting control logic in addition to described first defrost logic can be to described
Air-conditioner carries out defrosting control；Choose in other defrosting control logic described can described air-conditioner be entered
The defrosting control logic of row defrosting control is as described second defrosting control logic.
In this embodiment, by choosing in other defrosting control logic and air-conditioner can be carried out defrost
The defrosting control logic controlled, as the second defrosting control logic (the most standby defrosting control logic), makes
Must be when the acquiescence defrosting control logic (the i.e. first defrosting control logic) of air-conditioner be abnormal, Ke Yixuan
Select can be properly functioning defrosting control logic air-conditioner is carried out defrosting control, and then be able to ensure that sky
Adjust device systems stay heating operation, it is ensured that the normal heating load of unit, be conducive to promoting the use of user
Experience.
According to one embodiment of present invention, when the sensor relevant to the first defrosting control logic is for using
When the temperature sensor detecting the temperature of outdoor heat exchanger, described defrosting control method also wraps
Include: if described abnormality of temperature sensors being detected, then forbid that described air-conditioner runs in a chiller mode.
In this embodiment, owing to air-conditioner is when running in a chiller mode, the temperature of outdoor heat exchanger
Can be higher, need the temperature sensor using sensing chamber external heat exchanger temperature to carry out overheat protector, because of
This, by when this abnormality of temperature sensors being detected, forbids that air-conditioner runs in a chiller mode so that
It can be avoided that during the overheat protector mechanism exception of outdoor heat exchanger still refrigerating operaton and cause that safety occurs
Accident.
As a preferred embodiment of the present invention, below in conjunction with Fig. 3 with the first defrosting control logic it is
Temperature based on outdoor heat exchanger carries out defrosting control, with the second defrosting control logic for based on indoor
As a example by the temperature of heat exchanger carries out defrosting control, technical scheme is made further
Bright:
As it is shown on figure 3, the control method of air-conditioner according to an embodiment of the invention, including:
Step 302, carries out the selection of operational mode, if selecting heating mode to run, then performs step
304；If the refrigeration of selection or dehumidification mode run, then perform step 322；If selecting air supply pattern fortune
OK, then step 324 is performed.
Step 304, detects outer machine pipe temperature sensor the most normal, the most then perform step 314；
Otherwise, step 306 is performed.Wherein, outer machine pipe temperature sensor is sensing chamber's external heat exchanger temperature
Sensor.
Step 306, carries out defrosting control based on interior machine pipe temperature sensor, shows fault message simultaneously,
And air-conditioner tape jam heating operation.Wherein, interior machine pipe temperature sensor is detection indoor heat exchanger
The sensor of temperature, fault message shown here is mainly used for pointing out outer machine pipe temperature sensor different
Often, the fault in " air-conditioner tape jam heating operation " also refers to outer machine pipe temperature sensor fault.
Step 308, it may be judged whether meet condition A1 of defrost, the most then perform step 310；No
Then, step 306 is returned.Wherein, condition A1 is the condition entering defrosting operation.
Step 310, air-conditioner enters defrost and runs.
Step 312, it may be judged whether meet condition A2 exiting defrost, the most then exit defrost and return
Return step 302；Otherwise, return step 310 and continue defrost operation.
Step 314, carries out defrosting control based on outer machine pipe temperature sensor.
Step 316, it may be judged whether meet condition B1 of defrost, the most then perform step 318；No
Then, step 314 is returned.Wherein, condition B1 is the condition entering defrosting operation.
Step 318, air-conditioner enters defrost and runs.
Step 320, it may be judged whether meet condition B2 exiting defrost, the most then exit defrost and return
Return step 302；Otherwise, return step 318 and continue defrost operation.
Step 322, when air-conditioner runs with refrigeration or dehumidification mode, if the event of outer machine pipe temperature sensor
Barrier, does not the most allow refrigerating operaton, only can open air supply pattern and dehumidification mode.
Step 324, when air-conditioner runs with air supply pattern, if outer machine pipe temperature sensor fault, then
Display fault message, indoor set opens air supply pattern.
In the air-conditioner control method shown in Fig. 3, when air-conditioner is at the low temperature and high relative humidity environment of easy frosting
During lower operation, due to the defrost action of air-conditioner, easily there is temperature in the installation site of outer machine pipe temperature sensor
The problem that wet fluctuation range is big, and then the acid-base material in moisture easily makes outer machine pipe temperature sensor lose efficacy,
Therefore when outer machine pipe temperature sensor exception being detected, if air conditioner heat-production runs, then by defrosting control
Standby to using the parameter that detects based on interior machine pipe temperature sensor as defrost entry condition of logic switch
Defrosting control logic, to proceed defrosting control to air-conditioner, it is achieved that effective and reasonable to unit
Control so that air-conditioner can carry out defrosting control with standby defrosting control logic, really in a short time
Protect air-conditioner and can continue to heating operation to ensure normal heating load, improve the use body of user
Test.
Sense additionally, the second defrosting control logic can also use based on pressure transducer and interior machine pipe temperature
The defrosting control logic that the parameter that device detects is carried out.
The logic carrying out defrosting control based on interior machine pipe temperature sensor shown in Fig. 3 described further below
With the logic carrying out defrosting control based on outer machine pipe temperature sensor.
One, the logic of defrosting control is carried out based on interior machine pipe temperature sensor:
(room temperature is permissible to by means of room temperature in the logic carrying out defrosting control based on interior machine pipe temperature sensor
Carry out detection by indoor temperature transmitter to obtain) carry out auxiliary judgment, specifically:
1, defrost entry condition:
(1) when the compressor accumulated running time of air-conditioner is between 35-100 minute, in difference
Wind shelves under, the temperature of the indoor heat exchanger that interior machine pipe temperature sensor detects and room temperature meet in table 1
During shown condition, air-conditioner enters defrost and runs.
Table 1
(2) when the compressor accumulated running time of air-conditioner is more than 100 minutes, different
Under wind shelves, the temperature of the indoor heat exchanger that interior machine pipe temperature sensor detects and room temperature meet institute in table 2
During the condition shown, air-conditioner enters defrost and runs.
Table 2
2, defrost maximum duration:
Relation between defrost maximum duration and compressor accumulated running time R is as shown in table 3:
| Compressor accumulated running time R (minute) | Defrost maximum duration |
| R≤40 | DT (such as 7 minutes) |
| 40 ＜ R≤50 | DT+1 (such as 8 minutes) |
| 50 ＜ R≤65 | DT+2 (such as 9 minutes) |
| 65 ＜ R≤85 | DT+3 (such as 10 minutes) |
| 85 ＜ R | DT+5 (such as 12 minutes) |
Table 3
3, defrost termination condition:
(1) the defrost time arrives.
(2) break down during defrost.
When meeting above-mentioned two condition for the moment, terminate defrosting operation.
Two, the logic of defrosting control is carried out based on outer machine pipe temperature sensor:
1, defrost entry condition:
(1) compressor of air-conditioner is accumulative runs 40 minutes, and runs 10 minutes continuously.
(2) outer machine pipe temperature sensor detects that temperature T3 of outdoor heat exchanger is less than-1 DEG C.
(3) after the precondition meeting (1) and (2), if T3 declines the time of 1 DEG C every time
Within 40 seconds to 20 minutes, then (i.e. the time of T3 decline 1 DEG C is less than can to enter defrosting operation
40 seconds, or more than within 20 minutes, the most not entering defrosting operation).Decline the timing definition of 1 DEG C every time
Timing is started, the time experienced to next time declining 1 DEG C for declining 1 DEG C from the last time.
(4) after the precondition meeting (1) and (2), if T3≤-20 DEG C being detected and continuing
Within 5 minutes, defrost can be entered.
2, defrost termination condition:
The defrost that terminates first meeting following condition proceeds to commonly heat:
(1) temperature T3 >=20 DEG C of outdoor heat exchanger.
(2) outdoor heat converter temperature T3 >=10 DEG C and continue 60 seconds.
(3) defrost runs reaches 10 minutes (when shutting down during defrost or proceed to non-heating mode, defrost
Action will suspend, but the timing of defrost process will not stop, and again proceeds to defrost process during heating operation
Continue).
Wherein, entering after defrosting operation, no matter air-conditioner current switch machine state, and whether existing
Heating mode runs, and three above condition detects the most always, once meets, then immediately exit from defrost.
Have been described in detail above and carry out the logic of defrosting control and based on outer machine based on interior machine pipe temperature sensor
Pipe temperature sensor carries out the logic of defrosting control, and those skilled in the art are it is to be noted that above-mentioned
In explanation, concrete numerical value is merely to elaborate, and is not specifically limited, and above-mentioned numerical value can
Actual application adjusts accordingly.
Fig. 4 shows the schematic block diagram of the defrosting control device of air-conditioner according to an embodiment of the invention.
As shown in Figure 4, the defrosting control device 400 of air-conditioner according to an embodiment of the invention, bag
Include: judging unit 402 and control unit 404.
Wherein, it is judged that unit 402 is for when air-conditioner runs with heating mode, it may be judged whether can
By the first defrosting control logic, described air-conditioner is carried out defrosting control；Control unit 404 is used for
Described judging unit 402 judges to be carried out described air-conditioner by described first defrosting control logic
During defrosting control, by described first defrosting control logic, described air-conditioner is carried out defrosting control, and
For described judging unit 402 judge can not be by described first defrosting control logic to described air-conditioning
When device carries out defrosting control, by the second defrosting control logic, described air-conditioner is carried out defrosting control.
Specifically, air-conditioner can have multiple defrosting control logic, the first defrosting control logic to be empty
Adjust the acquiescence defrosting control logic of device.When judging to be come air-conditioner by the first defrosting control logic
When carrying out defrosting control, directly by the first defrosting control logic, air-conditioner can be carried out defrost control
System, and when judging by the first defrosting control logic, air-conditioner to be carried out defrosting control, pass through
Second defrosting control logic carries out defrosting control to air-conditioner so that even if the acquiescence defrost control of air-conditioner
Logic processed (first controls logic) lost efficacy, it is also possible to by standby defrosting control logic (the second control
Logic processed) continue air-conditioner is carried out defrosting control, and then it is able to ensure that air-conditioner system persistently heats
Run, it is ensured that the normal heating load of unit, be conducive to promoting the experience of user, it is to avoid air-conditioning
The single defrosting control logic of device employing carries out defrosting control and abnormal causing occurs in this defrosting control logic
Air conditioning unit ability and efficiency decline, and cause the problem that air conditioning system cannot be properly functioning.
In one embodiment of the invention, it is preferable that when judging can not to be patrolled by the first defrosting control
When volume air-conditioner being carried out defrosting control, alarm can be carried out, allow the user to find air-conditioning
System exist problem and process in time.Wherein it is possible to carried out by the form of sound and/or light
Alarm, can also show failure code simultaneously.
In one embodiment of the invention, as it is shown in figure 5, judging unit 402 includes: the first inspection
Survey unit 4022 and performance element 4024.Wherein, the first detector unit 4022 is for detecting with described
The sensor that first defrosting control logic is relevant is the most abnormal；Performance element 4024 is for described first
Detector unit 4022 detects when the sensor relevant to described first defrosting control logic is normal, sentences
Surely by described first defrosting control logic, described air-conditioner can be carried out defrosting control, and in institute
State the first detector unit 4022 and the sensor abnormality relevant to described first defrosting control logic detected
Time, it is determined that by described first defrosting control logic, described air-conditioner can not be carried out defrosting control.
In this embodiment, when air conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to
, easily there is the problem that the humiture fluctuation of sensor mounting location is bigger, and then easily leads in defrosting operation
Cause sensor fault, therefore can be by whether detecting the sensor relevant to the first defrosting control logic
Extremely determine whether by the first defrosting control logic, air-conditioner to be carried out defrosting control.
According to one embodiment of present invention, relevant to described first defrosting control logic sensor is
For the temperature sensor that the temperature of the outdoor heat exchanger of described air-conditioner is detected.
In this embodiment, owing to can be conveniently realized air-conditioner by the temperature of outdoor heat exchanger
Defrosting control, and cost is relatively low, therefore can be by temperature based on outdoor heat exchanger
The logic defrosting control logic by default that frost controls, the i.e. first defrosting control logic, then with the
The temperature that the temperature to outdoor heat exchanger that is the sensor that one defrosting control logic is relevant detects passes
Sensor.
According to one embodiment of present invention, when the sensor relevant to the first defrosting control logic is for using
When the temperature sensor detecting the temperature of outdoor heat exchanger, described control unit 404 is also used
In: when described abnormality of temperature sensors being detected in described first detector unit 4022, forbid described
Air-conditioner runs in a chiller mode.
In this embodiment, owing to air-conditioner is when running in a chiller mode, the temperature of outdoor heat exchanger
Can be higher, need the temperature sensor using sensing chamber external heat exchanger temperature to carry out overheat protector, because of
This, by when this abnormality of temperature sensors being detected, forbids that air-conditioner runs in a chiller mode so that
It can be avoided that during the overheat protector mechanism exception of outdoor heat exchanger still refrigerating operaton and cause that safety occurs
Accident.
In one embodiment of the invention, as shown in Figure 4, the defrosting control device of air-conditioner
400, also include: the second detector unit 406 and selection unit 408.
Wherein, the second detector unit 406 is for detecting in all defrost logics that described air-conditioner uses
Whether other defrosting control logic in addition to described first defrost logic can be carried out described air-conditioner
Defrosting control；Selecting unit 408 to be used for choosing can be to described sky in other defrosting control logic described
Device is adjusted to carry out the defrosting control logic of defrosting control as described second defrosting control logic.
In this embodiment, by choosing in other defrosting control logic and air-conditioner can be carried out defrost
The defrosting control logic controlled, as the second defrosting control logic (the most standby defrosting control logic), makes
Must be when the acquiescence defrosting control logic (the i.e. first defrosting control logic) of air-conditioner be abnormal, Ke Yixuan
Select can be properly functioning defrosting control logic air-conditioner is carried out defrosting control, and then be able to ensure that sky
Adjust device systems stay heating operation, it is ensured that the normal heating load of unit, be conducive to promoting the use of user
Experience.
The defrosting control device 400 of the air-conditioner shown in Fig. 4 may apply in air-conditioner, specifically
As shown in Figure 6, air-conditioner 600 according to an embodiment of the invention, including: as shown in Figure 4
The defrosting control device 400 of air-conditioner.
Technical scheme being described in detail above in association with accompanying drawing, the present invention proposes a kind of new
The defrosting control scheme of air-conditioner so that when the acquiescence defrosting control logic of air-conditioner lost efficacy, it is possible to
Continue air-conditioner is carried out defrosting control by standby defrosting control logic, and then be able to ensure that air-conditioning
Device systems stay heating operation, it is ensured that the normal heating load of unit, improves the experience of user.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (11)
1. the defrosting control method of an air-conditioner, it is characterised in that including:
When air-conditioner runs with heating mode, it may be judged whether the first defrosting control logic pair can be passed through
Described air-conditioner carries out defrosting control；
If it is determined that defrosting control can be carried out described air-conditioner by described first defrosting control logic,
Then by described first defrosting control logic, described air-conditioner is carried out defrosting control；
If it is determined that defrosting control can not be carried out described air-conditioner by described first defrosting control logic,
Then by the second defrosting control logic, described air-conditioner is carried out defrosting control.
The defrosting control method of air-conditioner the most according to claim 1, it is characterised in that sentence
The disconnected step whether by the first defrosting control logic, described air-conditioner can be carried out defrosting control, tool
Body includes:
Detect the sensor relevant to described first defrosting control logic the most abnormal；
If the sensor relevant to described first defrosting control logic is normal, then judging can be by described
First defrosting control logic carries out defrosting control to described air-conditioner；
If the sensor abnormality relevant to described first defrosting control logic, then judging can not be by described
First defrosting control logic carries out defrosting control to described air-conditioner.
The defrosting control method of air-conditioner the most according to claim 2, it is characterised in that with
The sensor that described first defrosting control logic is relevant is for the outdoor heat exchanger to described air-conditioner
Temperature carries out the temperature sensor detected.
The defrosting control method of air-conditioner the most according to claim 3, it is characterised in that also
Including:
If described abnormality of temperature sensors being detected, then forbid that described air-conditioner runs in a chiller mode.
The defrosting control method of air-conditioner the most according to any one of claim 1 to 4, its
It is characterised by, in the described step that by the second defrosting control logic, described air-conditioner is carried out defrosting control
Before Zhou, also include:
Detect its in addition to described first defrost logic in all defrost logics that described air-conditioner uses
Whether its defrosting control logic can carry out defrosting control to described air-conditioner；
Choose the defrost that described air-conditioner can be carried out defrosting control in other defrosting control logic described
Control logic as described second defrosting control logic.
6. the defrosting control device of an air-conditioner, it is characterised in that including:
Judging unit, for when air-conditioner runs with heating mode, it may be judged whether can be by first
Defrosting control logic carries out defrosting control to described air-conditioner；
Control unit, being used for can be by described first defrosting control logic in the judgement of described judging unit
When described air-conditioner is carried out defrosting control, by described first defrosting control logic to described air-conditioner
Carry out defrosting control, and for judging to be patrolled by described first defrosting control at described judging unit
When volume described air-conditioner being carried out defrosting control, by the second defrosting control logic, described air-conditioner is entered
Row defrosting control.
The defrosting control device of air-conditioner the most according to claim 6, it is characterised in that institute
State judging unit to include:
Whether first detector unit, for detecting the sensor relevant to described first defrosting control logic
Abnormal；
Performance element, for detecting and described first defrosting control logic in described first detector unit
When relevant sensor is normal, it is determined that can be by described first defrosting control logic to described air-conditioner
Carry out defrosting control, and patrol with described first defrosting control for detecting in described first detector unit
When collecting relevant sensor abnormality, it is determined that can not be by described first defrosting control logic to described air-conditioning
Device carries out defrosting control.
The defrosting control device of air-conditioner the most according to claim 7, it is characterised in that with
The sensor that described first defrosting control logic is relevant is for the outdoor heat exchanger to described air-conditioner
Temperature carries out the temperature sensor detected.
The defrosting control device of air-conditioner the most according to claim 8, it is characterised in that institute
State control unit to be additionally operable to:
When described first detector unit detects described abnormality of temperature sensors, forbid described air-conditioner
Run in a chiller mode.
10. according to the defrosting control device of the air-conditioner according to any one of claim 6 to 9, its
It is characterised by, also includes:
Second detector unit, for detecting in all defrost logics that described air-conditioner uses except described the
Whether other defrosting control logic outside one defrost logic can carry out defrost control to described air-conditioner
System；
Select unit, be used for choosing in other defrosting control logic described and described air-conditioner can be carried out
The defrosting control logic of defrosting control is as described second defrosting control logic.
11. 1 kinds of air-conditioners, it is characterised in that including:
The defrosting control device of the air-conditioner as according to any one of claim 6 to 10.
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| CN201610344981.0A CN105972758B (en) | 2016-05-19 | 2016-05-19 | Defrosting control method, defrosting control device and the air conditioner of air conditioner |
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| CN106679117A (en) * | 2017-01-24 | 2017-05-17 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device |
| CN106839301A (en) * | 2017-01-24 | 2017-06-13 | 青岛海尔空调器有限总公司 | Air-conditioner defrosting logic control method and device |
| CN106871341A (en) * | 2017-01-24 | 2017-06-20 | 青岛海尔空调器有限总公司 | Air-conditioner defrosting control method and device |
| CN109210695A (en) * | 2018-09-10 | 2019-01-15 | 青岛海尔空调器有限总公司 | Air-conditioning freezes the control method remedied automatically afterwards |
| CN110542149A (en) * | 2019-08-24 | 2019-12-06 | 珠海格力电器股份有限公司 | defrosting control method for air conditioning system and air conditioning system |
| CN113531776A (en) * | 2021-07-26 | 2021-10-22 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioning unit, storage medium and air conditioning unit |
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| CN105972758B (en) | 2019-02-12 |
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