CN105972758B - Defrosting control method, defrosting control device and the air conditioner of air conditioner - Google Patents
Defrosting control method, defrosting control device and the air conditioner of air conditioner Download PDFInfo
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- CN105972758B CN105972758B CN201610344981.0A CN201610344981A CN105972758B CN 105972758 B CN105972758 B CN 105972758B CN 201610344981 A CN201610344981 A CN 201610344981A CN 105972758 B CN105972758 B CN 105972758B
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- defrosting control
- air conditioner
- control logic
- defrosting
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of defrosting control method of air conditioner, defrosting control device and air conditioners, wherein, the defrosting control method of air conditioner, comprising: when air conditioner is run with heating mode, judge whether that defrosting control can be carried out to the air conditioner by the first defrosting control logic；If it is determined that defrosting control can be carried out to the air conditioner by the first defrosting control logic, then defrosting control is carried out to the air conditioner by the first defrosting control logic；If it is determined that defrosting control cannot be carried out to the air conditioner by the first defrosting control logic, then defrosting control is carried out to the air conditioner by the second defrosting control logic.Technical solution of the present invention makes in the default defrosting control logic failure of air conditioner, it can continue to carry out defrosting control to air conditioner by spare defrosting control logic, and then it can ensure that air-conditioner system continues heating operation, the normal heating load for guaranteeing unit is conducive to the usage experience for promoting user.
Description
Technical field
The present invention relates to air conditioner technical fields, defrosting control method, Yi Zhongkong in particular to a kind of air conditioner
Adjust the defrosting control device and a kind of air conditioner of device.
Background technique
Currently, propose a variety of defrosting control methods in technology relevant to air conditioner, but based on the considerations of cost,
It generallys use based on the refrigerant temperature in detection outdoor heat exchanger and controls whether air conditioner enters and exit defrost.
In practical applications, when air-conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to defrosting operation, hold
There is temperature and humidity and fluctuates larger problem in the installation site of the sensor of refrigerant temperature easily in detection outdoor heat exchanger, in turn
Easily lead to sensor fault.When the failures such as short circuit, open circuit, temperature drift occurs in sensor, air conditioner can not normally completing
Frost movement, and then can be accumulated due to frost layer causes unit capacity and efficiency to decline, will cause air-conditioning system when serious can not be normal
Operation.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of defrosting control methods of new air conditioner, so that in sky
When adjusting the default defrosting control logic failure of device, it can continue to carry out defrost control to air conditioner by spare defrosting control logic
System, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote making for user
With experience.
It is another object of the present invention to a kind of corresponding defrosting control device for proposing air conditioner and there is the defrost
The air conditioner of control device.
To achieve the above object, according to the embodiment of the first aspect of the invention, a kind of defrost control of air conditioner is proposed
Method processed, comprising: when air conditioner is run with heating mode, judging whether can be by the first defrosting control logic to the sky
Device is adjusted to carry out defrosting control；If it is determined that defrosting control can be carried out to the air conditioner by the first defrosting control logic,
Defrosting control is then carried out to the air conditioner by the first defrosting control logic；If it is determined that first defrost cannot be passed through
Control logic carries out defrosting control to the air conditioner, then carries out defrost control to the air conditioner by the second defrosting control logic
System.
The defrosting control method of the air conditioner of embodiment according to the present invention, air conditioner can be patrolled there are many defrosting control
Volume, the first defrosting control logic is the default defrosting control logic of air conditioner.When judgement can pass through the first defrosting control logic
When to carry out defrosting control to air conditioner, defrosting control directly can be carried out to air conditioner by the first defrosting control logic,
And when defrosting control cannot be carried out to air conditioner by the first defrosting control logic by determining, pass through the second defrosting control logic pair
Air conditioner carries out defrosting control, even if also can so that the default defrosting control logic (the first control logic) of air conditioner fails
Continue to carry out defrosting control to air conditioner by spare defrosting control logic (the second control logic), and then can ensure air-conditioning
Device systems stay heating operation guarantees the normal heating load of unit, is conducive to the usage experience for promoting user, avoids air conditioner
Using single defrosting control logic carry out defrosting control and the defrosting control logic occur it is abnormal cause air-conditioner set ability and
The problem of efficiency declines, and air-conditioning system is caused to be unable to operate normally.
In one embodiment of the invention, it is preferable that when judgement cannot be by the first defrosting control logic to air conditioner
Carry out defrosting control when, warning note can be carried out, allow the user to discovery air-conditioning system there are the problem of and carry out in time
Processing.Wherein it is possible to carry out warning note by way of sound and/or light, while it can also show fault code.
The defrosting control method of air conditioner according to the abovementioned embodiments of the present invention can also have following technical characteristic:
According to one embodiment of present invention, judge whether can by the first defrosting control logic to the air conditioner into
The step of row defrosting control, specifically include: whether detection sensor relevant to the first defrosting control logic is abnormal；If with
The relevant sensor of the first defrosting control logic is normal, then determining can be by the first defrosting control logic to described
Air conditioner carries out defrosting control；If sensor abnormality relevant to the first defrosting control logic, judgement cannot pass through institute
It states the first defrosting control logic and defrosting control is carried out to the air conditioner.
In this embodiment, when air-conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to defrosting operation, hold
The temperature and humidity for easily sensor mounting location occur fluctuates larger problem, and then easily leads to sensor fault, therefore can pass through
Relevant to the first defrosting control logic sensor is detected whether extremely come determine whether can be by the first defrosting control logic
To carry out defrosting control to air conditioner.
According to one embodiment of present invention, sensor relevant to the first defrosting control logic is for described
The temperature sensor that the temperature of the outdoor heat exchanger of air conditioner is detected.
In this embodiment, since the defrost control to air conditioner can be conveniently realized by the temperature of outdoor heat exchanger
System, and cost is relatively low, therefore the logic of defrosting control can will be carried out based on the temperature of outdoor heat exchanger as default
Defrosting control logic, i.e. the first defrosting control logic, then sensor relevant to the first defrosting control logic is to outdoor
The temperature sensor that the temperature of heat exchanger is detected.
According to one embodiment of present invention, when sensor relevant to the first defrosting control logic is for changing outdoor
When the temperature sensor that the temperature of hot device is detected, the defrosting control method further include: if detecting the temperature sensing
Device is abnormal, then the air conditioner is forbidden to run in a chiller mode.
In this embodiment, since air conditioner when running in a chiller mode, the temperature of outdoor heat exchanger can be higher, needs
Overheat protector is carried out using the temperature sensor of detection outdoor heat exchanger temperature, therefore by detecting the temperature sensor
When abnormal, air conditioner is forbidden to run in a chiller mode, when making it possible to avoid the overheat protector mechanism exception of outdoor heat exchanger according to
Right refrigerating operaton and lead to safety accident occur.
According to one embodiment of present invention, in the second defrosting control logic that passes through to air conditioner progress defrost
Before the step of control, further includes: detect in all defrost logics that the air conditioner uses except the first defrost logic it
Whether outer other defrosting control logics can carry out defrosting control to the air conditioner；Choose other defrosting control logics
In can to the air conditioner carry out defrosting control defrosting control logic as the second defrosting control logic.
In this embodiment, the defrost of defrosting control can be carried out in other defrosting control logics to air conditioner by choosing
Control logic is as the second defrosting control logic (i.e. spare defrosting control logic), so that the default defrosting control in air conditioner is patrolled
When collecting (i.e. the first defrosting control logic) exception, it may be selected that the defrosting control logic of normal operation to air conditioner
Frost control, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote user
Usage experience.
A kind of embodiment according to a second aspect of the present invention, it is also proposed that defrosting control device of air conditioner, comprising: judgement
Unit, for when air conditioner is run with heating mode, judge whether can be by the first defrosting control logic to the air-conditioning
Device carries out defrosting control；Control unit, for the first defrosting control logic pair can be passed through in judging unit judgement
When the air conditioner carries out defrosting control, defrosting control is carried out to the air conditioner by the first defrosting control logic, and
For the judging unit determine cannot by the first defrosting control logic to the air conditioner carry out defrosting control when,
Defrosting control is carried out to the air conditioner by the second defrosting control logic.
The defrosting control device of the air conditioner of embodiment according to the present invention, air conditioner can be patrolled there are many defrosting control
Volume, the first defrosting control logic is the default defrosting control logic of air conditioner.When judgement can pass through the first defrosting control logic
When to carry out defrosting control to air conditioner, defrosting control directly can be carried out to air conditioner by the first defrosting control logic,
And when defrosting control cannot be carried out to air conditioner by the first defrosting control logic by determining, pass through the second defrosting control logic pair
Air conditioner carries out defrosting control, even if also can so that the default defrosting control logic (the first control logic) of air conditioner fails
Continue to carry out defrosting control to air conditioner by spare defrosting control logic (the second control logic), and then can ensure air-conditioning
Device systems stay heating operation guarantees the normal heating load of unit, is conducive to the usage experience for promoting user, avoids air conditioner
Using single defrosting control logic carry out defrosting control and the defrosting control logic occur it is abnormal cause air-conditioner set ability and
The problem of efficiency declines, and air-conditioning system is caused to be unable to operate normally.
In one embodiment of the invention, it is preferable that when judgement cannot be by the first defrosting control logic to air conditioner
Carry out defrosting control when, warning note can be carried out, allow the user to discovery air-conditioning system there are the problem of and carry out in time
Processing.Wherein it is possible to carry out warning note by way of sound and/or light, while it can also show fault code.
The defrosting control device of air conditioner according to the abovementioned embodiments of the present invention can also have following technical characteristic:
According to one embodiment of present invention, the judging unit includes: first detection unit, for detecting and described the
Whether the relevant sensor of one defrosting control logic is abnormal；Execution unit, for being detected and institute in the first detection unit
State the relevant sensor of the first defrosting control logic it is normal when, judgement can be by the first defrosting control logic to the sky
Device is adjusted to carry out defrosting control, and for detecting biography relevant to the first defrosting control logic in the first detection unit
When sensor exception, judgement cannot carry out defrosting control to the air conditioner by the first defrosting control logic.
In this embodiment, when air-conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to defrosting operation, hold
The temperature and humidity for easily sensor mounting location occur fluctuates larger problem, and then easily leads to sensor fault, therefore can pass through
Relevant to the first defrosting control logic sensor is detected whether extremely come determine whether can be by the first defrosting control logic
To carry out defrosting control to air conditioner.
According to one embodiment of present invention, sensor relevant to the first defrosting control logic is for described
The temperature sensor that the temperature of the outdoor heat exchanger of air conditioner is detected.
In this embodiment, since the defrost control to air conditioner can be conveniently realized by the temperature of outdoor heat exchanger
System, and cost is relatively low, therefore the logic of defrosting control can will be carried out based on the temperature of outdoor heat exchanger as default
Defrosting control logic, i.e. the first defrosting control logic, then sensor relevant to the first defrosting control logic is to outdoor
The temperature sensor that the temperature of heat exchanger is detected.
According to one embodiment of present invention, when sensor relevant to the first defrosting control logic is for changing outdoor
When the temperature sensor that the temperature of hot device is detected, described control unit is also used to: being detected in the first detection unit
When the abnormality of temperature sensors, the air conditioner is forbidden to run in a chiller mode.
In this embodiment, since air conditioner when running in a chiller mode, the temperature of outdoor heat exchanger can be higher, needs
Overheat protector is carried out using the temperature sensor of detection outdoor heat exchanger temperature, therefore by detecting the temperature sensor
When abnormal, air conditioner is forbidden to run in a chiller mode, when making it possible to avoid the overheat protector mechanism exception of outdoor heat exchanger according to
Right refrigerating operaton and lead to safety accident occur.
According to one embodiment of present invention, further includes: second detection unit, the institute used for detecting the air conditioner
Have whether other defrosting control logics in defrost logic in addition to the first defrost logic can carry out the air conditioner
Defrosting control；Selecting unit can carry out defrosting control to the air conditioner for choosing in other defrosting control logics
Defrosting control logic as the second defrosting control logic.
In this embodiment, the defrost of defrosting control can be carried out in other defrosting control logics to air conditioner by choosing
Control logic is as the second defrosting control logic (i.e. spare defrosting control logic), so that the default defrosting control in air conditioner is patrolled
When collecting (i.e. the first defrosting control logic) exception, it may be selected that the defrosting control logic of normal operation to air conditioner
Frost control, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote user
Usage experience.
Embodiment according to a third aspect of the present invention, it is also proposed that a kind of air conditioner, comprising: as any in above-described embodiment
The defrosting control device of air conditioner described in.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic flow diagram of the defrosting control method of the air conditioner of embodiment according to the present invention；
Fig. 2 shows embodiment according to the present invention judge whether can be by the first defrosting control logic to air conditioner
Carry out the schematic flow diagram of defrosting control；
Fig. 3 shows the schematic flow diagram of the control method of the air conditioner of embodiment according to the present invention；
Fig. 4 shows the schematic block diagram of the defrosting control device of the air conditioner of embodiment according to the present invention；
Fig. 5 shows the schematic block diagram of judging unit shown in Fig. 4；
Fig. 6 shows the schematic block diagram of the air conditioner of embodiment according to the present invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of the defrosting control method of air conditioner according to first embodiment of the invention.
As shown in Figure 1, the defrosting control method of air conditioner according to first embodiment of the invention, comprising:
Step S10, when air conditioner is run with heating mode, judging whether can be by the first defrosting control logic to institute
It states air conditioner and carries out defrosting control.
In step slo, air conditioner can be the silent of air conditioner there are many defrosting control logic, the first defrosting control logic
Recognize defrosting control logic, i.e., when air conditioner is run with heating mode, whether preferential judgement defaults defrosting control logic by it
Defrosting control can be carried out to air conditioner.
In one embodiment of the invention, as shown in Fig. 2, step S10 is specifically included:
Whether abnormal step S101 detects sensor relevant to the first defrosting control logic.
Step S102, if sensor relevant to the first defrosting control logic is normal, judgement can be by described
First defrosting control logic carries out defrosting control to the air conditioner.
Step S103, if sensor abnormality relevant to the first defrosting control logic, judgement cannot be by described
First defrosting control logic carries out defrosting control to the air conditioner.
In this embodiment, when air-conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to defrosting operation, hold
The temperature and humidity for easily sensor mounting location occur fluctuates larger problem, and then easily leads to sensor fault, therefore can pass through
Relevant to the first defrosting control logic sensor is detected whether extremely come determine whether can be by the first defrosting control logic
To carry out defrosting control to air conditioner.
As a preferred embodiment of the present invention, due to that can be conveniently realized by the temperature of outdoor heat exchanger to sky
The defrosting control of device is adjusted, and cost is relatively low, therefore can will carry out patrolling for defrosting control based on the temperature of outdoor heat exchanger
Collect the defrosting control logic as default, i.e. the first defrosting control logic, then sensing relevant to the first defrosting control logic
Device is the temperature sensor detected to the temperature of outdoor heat exchanger.
Defrosting control method shown in Fig. 1, further includes:
Step S12, if it is determined that defrosting control can be carried out to the air conditioner by the first defrosting control logic, then
Defrosting control is carried out to the air conditioner by the first defrosting control logic.
In step s 12, when determine can by the first defrosting control logic come to air conditioner carry out defrosting control when, can
Directly to carry out defrosting control to air conditioner by the first defrosting control logic.
Step S14, if it is determined that defrosting control cannot be carried out to the air conditioner by the first defrosting control logic, then
Defrosting control is carried out to the air conditioner by the second defrosting control logic.
In step S14, by determine cannot by the first defrosting control logic to air conditioner carry out defrosting control when,
Defrosting control is carried out to air conditioner using the second defrosting control logic, even if so that the default defrosting control logic (the of air conditioner
One control logic) failure, it can also be continued by spare defrosting control logic (the second control logic) to air conditioner
Frost control, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote user
Usage experience, avoid that air conditioner carries out defrosting control using single defrosting control logic and the defrosting control logic occurs
The problem of exception causes air-conditioner set ability and efficiency to decline, air-conditioning system is caused to be unable to operate normally.
According to one embodiment of present invention, when judgement cannot carry out defrost to air conditioner by the first defrosting control logic
When control, warning note can be carried out, allow the user to discovery air-conditioning system there are the problem of and handled in time.Its
In, warning note can be carried out by way of sound and/or light, while can also show fault code.
According to one embodiment of present invention, in step S14 by the second defrosting control logic to the air conditioner into
Before the step of row defrosting control, further includes: detect in all defrost logics that the air conditioner uses except first defrost
Whether other defrosting control logics except logic can carry out defrosting control to the air conditioner；Choose other defrost controls
The defrosting control logic of defrosting control can be carried out in logic processed to the air conditioner as the second defrosting control logic.
In this embodiment, the defrost of defrosting control can be carried out in other defrosting control logics to air conditioner by choosing
Control logic is as the second defrosting control logic (i.e. spare defrosting control logic), so that the default defrosting control in air conditioner is patrolled
When collecting (i.e. the first defrosting control logic) exception, it may be selected that the defrosting control logic of normal operation to air conditioner
Frost control, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote user
Usage experience.
According to one embodiment of present invention, when sensor relevant to the first defrosting control logic is for changing outdoor
When the temperature sensor that the temperature of hot device is detected, the defrosting control method further include: if detecting the temperature sensing
Device is abnormal, then the air conditioner is forbidden to run in a chiller mode.
In this embodiment, since air conditioner when running in a chiller mode, the temperature of outdoor heat exchanger can be higher, needs
Overheat protector is carried out using the temperature sensor of detection outdoor heat exchanger temperature, therefore by detecting the temperature sensor
When abnormal, air conditioner is forbidden to run in a chiller mode, when making it possible to avoid the overheat protector mechanism exception of outdoor heat exchanger according to
Right refrigerating operaton and lead to safety accident occur.
It with the first defrosting control logic is to be changed based on outdoor below in conjunction with Fig. 3 as a preferred embodiment of the present invention
The temperature of hot device carries out defrosting control, carries out defrost control so that the second defrosting control logic is the temperature based on indoor heat exchanger
It is made as example, further description of the technical solution of the present invention:
As shown in figure 3, the control method of the air conditioner of embodiment according to the present invention, comprising:
Step 302, the selection of operational mode is carried out, if selection heating mode operation, thens follow the steps 304；If selection system
The operation of cold or dehumidification mode, thens follow the steps 322；If selecting air supply pattern operation, 324 are thened follow the steps.
Step 304, whether normal outer machine tube temperature sensor is detected, if so, thening follow the steps 314；Otherwise, step is executed
306.Wherein, outer machine tube temperature sensor is the sensor for detecting outdoor heat exchanger temperature.
Step 306, defrosting control is carried out based on interior machine tube temperature sensor, while shows fault message, and air conditioner band
Failure heating operation.Wherein, interior machine tube temperature sensor is the sensor for detecting indoor heat exchange temperature, failure shown here
Information is mainly used for prompting outer machine tube temperature sensor abnormality, and the failure in " air conditioner tape jam heating operation " also refers to outer machine
Tube temperature sensor fault.
Step 308, judge whether the condition A1 for meeting defrost, if so, thening follow the steps 310；Otherwise, return step 306.
Wherein, condition A1 is the condition into defrosting operation.
Step 310, air conditioner enters defrost operation.
Step 312, judge whether to meet the condition A2 for exiting defrost, if so, exiting defrost and return step 302；It is no
Then, return step 310 continues defrost operation.
Step 314, defrosting control is carried out based on outer machine tube temperature sensor.
Step 316, judge whether the condition B1 for meeting defrost, if so, thening follow the steps 318；Otherwise, return step 314.
Wherein, condition B1 is the condition into defrosting operation.
Step 318, air conditioner enters defrost operation.
Step 320, judge whether to meet the condition B2 for exiting defrost, if so, exiting defrost and return step 302；It is no
Then, return step 318 continues defrost operation.
Step 322, when air conditioner with freeze or dehumidification mode run when, if outer machine tube temperature sensor fault, does not allow
Refrigerating operaton can only open air supply pattern and dehumidification mode.
Step 324, when air conditioner is run with air supply pattern, if outer machine tube temperature sensor fault, shows fault message,
Indoor unit opens air supply pattern.
In air-conditioner control method shown in Fig. 3, when air conditioner is run under the low temperature and high relative humidity environment of easy frosting, by
It is acted in the defrost of air conditioner, the big problem of warm and humid fluctuation range, Jin Ershui easily occurs in the installation site of outer machine tube temperature sensor
Acid-base material in point easily makes outer machine tube temperature sensor failure, therefore when detecting outer machine tube temperature sensor abnormality, if air-conditioning
Device heating operation is then entered defrosting control logic switch to using the parameter detected based on interior machine tube temperature sensor as defrost
The spare defrosting control logic of condition realizes the effective and reasonable control to unit to continue defrosting control to air conditioner,
So that air conditioner can carry out defrosting control in a short time with spare defrosting control logic, it is ensured that air conditioner can continue to heat
Operation improves the usage experience of user to guarantee normal heating load.
In addition, the second defrosting control logic can also be using being detected based on pressure sensor and interior machine tube temperature sensor
The defrosting control logic that parameter carries out.
The logic of defrosting control is carried out based on interior machine tube temperature sensor shown in Fig. 3 described further below and is based on outer machine
The logic of tube temperature sensor progress defrosting control.
One, the logic of defrosting control is carried out based on interior machine tube temperature sensor:
By means of room temperature, (room temperature can pass through Indoor Temperature in the logic for carrying out defrosting control based on interior machine tube temperature sensor
Degree sensor detected 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 minutes, under different wind files, interior machine
When the temperature and room temperature of the indoor heat exchanger that tube temperature sensor detects meet condition shown in table 1, air conditioner enters defrost
Operation.
Table 1
(2) when the compressor accumulated running time of air conditioner was at 100 minutes or more, under different wind files, interior machine pipe
When the temperature and room temperature of the indoor heat exchanger that temperature sensor detects meet condition shown in table 2, air conditioner enters defrost fortune
Row.
Table 2
2, defrost maximum time:
Relationship between defrost maximum time and compressor accumulated running time R is as shown in table 3:
| Compressor accumulated running time R (minute) | Defrost maximum time |
| 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) it breaks 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 tube temperature sensor:
1, defrost entry condition:
(1) the accumulative operation of the compressor of air conditioner 40 minutes, and continuous operation 10 minutes.
(2) outer machine tube temperature sensor detects that the temperature T3 of outdoor heat exchanger is less than -1 DEG C.
(3) after the precondition of satisfaction (1) and (2), if T3 decline every time 1 DEG C of time 40 seconds to 20 minutes it
Interior, then can entering defrosting operation, (i.e. T3 declined 1 DEG C of time less than 40 seconds, or did not entered defrost behaviour greater than 20 minutes
Make).The timing definition of 1 DEG C of decline is the timing since 1 DEG C of last time decline every time, is undergone until declining 1 DEG C next time
Time.
(4) after the precondition of satisfaction (1) and (2), change if detecting T3≤- 20 DEG C and continuing to enter for 5 minutes
Frost.
2, defrost termination condition:
The defrost that first terminates for meeting the following conditions is transferred to common heating:
(1) temperature T3 >=20 DEG C of outdoor heat exchanger.
(2) outdoor heat exchanger temperature T3 >=10 DEG C and continue 60 seconds.
(3) full 10 minutes of defrost operation (when shutting down during defrost or being transferred to non-heating mode, defrost movement will pause, but
The timing of defrost process will not stop, and defrost process continues when being transferred to heating operation again).
Wherein, enter defrosting operation after, no matter air conditioner current switch machine state, and whether heating mode transport
Row, three above condition all constant testings then immediately exit from defrost once meeting.
It has been described in detail above and the logic of defrosting control is carried out based on interior machine tube temperature sensor and is sensed based on outer machine tube temperature
Device carries out the logic of defrosting control, those skilled in the art it is to be noted that in the above description, specific numerical value be only for
It elaborates, and is not specifically limited, above-mentioned numerical value can adjust accordingly in actual application.
Fig. 4 shows the schematic block diagram of the defrosting control device of the air conditioner of embodiment according to the present invention.
As shown in figure 4, the defrosting control device 400 of the air conditioner of embodiment according to the present invention, comprising: judging unit
402 and control unit 404.
Wherein, judging unit 402 is used for when air conditioner is run with heating mode, and judging whether can be by the first defrost
Control logic carries out defrosting control to the air conditioner；Control unit 404 is used to pass through in the judging unit 402 judgement
When the first defrosting control logic carries out defrosting control to the air conditioner, by the first defrosting control logic to described
Air conditioner carries out defrosting control, and for that cannot pass through the first defrosting control logic pair in the judging unit 402 judgement
When the air conditioner carries out defrosting control, defrosting control is carried out to the air conditioner by the second defrosting control logic.
Specifically, air conditioner can be the default of air conditioner there are many defrosting control logic, the first defrosting control logic
Defrosting control logic.When determine can by the first defrosting control logic come to air conditioner carry out defrosting control when, can be direct
Defrosting control is carried out to air conditioner by the first defrosting control logic, and is determining that the first defrosting control logic pair cannot be passed through
When air conditioner carries out defrosting control, defrosting control is carried out to air conditioner by the second defrosting control logic, even if so that air conditioner
Default defrosting control logic (the first control logic) failure, also can (the second control be patrolled by spare defrosting control logic
Volume) continue to carry out defrosting control to air conditioner, and then can ensure that air-conditioner system continues heating operation, guarantee the normal of unit
Heating load is conducive to the usage experience for promoting user, avoids air conditioner using single defrosting control logic and carries out defrost control
System and the defrosting control logic occur it is abnormal cause air-conditioner set ability and efficiency to decline, cause air-conditioning system to be unable to operate normally
The problem of.
In one embodiment of the invention, it is preferable that when judgement cannot be by the first defrosting control logic to air conditioner
Carry out defrosting control when, warning note can be carried out, allow the user to discovery air-conditioning system there are the problem of and carry out in time
Processing.Wherein it is possible to carry out warning note by way of sound and/or light, while it can also show fault code.
In one embodiment of the invention, as shown in figure 5, judging unit 402 includes: first detection unit 4022 and holds
Row unit 4024.Wherein, first detection unit 4022 is for detecting sensor relevant to the first defrosting control logic
No exception；Execution unit 4024 is related to the first defrosting control logic for detecting in the first detection unit 4022
Sensor it is normal when, judgement can by the first defrosting control logic to the air conditioner carry out defrosting control, be used in combination
In when the first detection unit 4022 detects sensor abnormality relevant to the first defrosting control logic, determine not
Defrosting control can be carried out to the air conditioner by the first defrosting control logic.
In this embodiment, when air-conditioning system is run under the low temperature and high relative humidity environment of easy frosting, due to defrosting operation, hold
The temperature and humidity for easily sensor mounting location occur fluctuates larger problem, and then easily leads to sensor fault, therefore can pass through
Relevant to the first defrosting control logic sensor is detected whether extremely come determine whether can be by the first defrosting control logic
To carry out defrosting control to air conditioner.
According to one embodiment of present invention, sensor relevant to the first defrosting control logic is for described
The temperature sensor that the temperature of the outdoor heat exchanger of air conditioner is detected.
In this embodiment, since the defrost control to air conditioner can be conveniently realized by the temperature of outdoor heat exchanger
System, and cost is relatively low, therefore the logic of defrosting control can will be carried out based on the temperature of outdoor heat exchanger as default
Defrosting control logic, i.e. the first defrosting control logic, then sensor relevant to the first defrosting control logic is to outdoor
The temperature sensor that the temperature of heat exchanger is detected.
According to one embodiment of present invention, when sensor relevant to the first defrosting control logic is for changing outdoor
When the temperature sensor that the temperature of hot device is detected, described control unit 404 is also used to: in the first detection unit 4022
When detecting the abnormality of temperature sensors, the air conditioner is forbidden to run in a chiller mode.
In this embodiment, since air conditioner when running in a chiller mode, the temperature of outdoor heat exchanger can be higher, needs
Overheat protector is carried out using the temperature sensor of detection outdoor heat exchanger temperature, therefore by detecting the temperature sensor
When abnormal, air conditioner is forbidden to run in a chiller mode, when making it possible to avoid the overheat protector mechanism exception of outdoor heat exchanger according to
Right refrigerating operaton and lead to safety accident occur.
In one embodiment of the invention, as shown in figure 4, the defrosting control device 400 of air conditioner, further includes: second
Detection unit 406 and selecting unit 408.
Wherein, second detection unit 406 is used to detect in all defrost logics that the air conditioner uses except described first
Whether other defrosting control logics except defrost logic can carry out defrosting control to the air conditioner；Selecting unit 408 is used
In choosing in other defrosting control logics the defrosting control logic of defrosting control can be carried out as institute to the air conditioner
State the second defrosting control logic.
In this embodiment, the defrost of defrosting control can be carried out in other defrosting control logics to air conditioner by choosing
Control logic is as the second defrosting control logic (i.e. spare defrosting control logic), so that the default defrosting control in air conditioner is patrolled
When collecting (i.e. the first defrosting control logic) exception, it may be selected that the defrosting control logic of normal operation to air conditioner
Frost control, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heating load of unit, is conducive to promote user
Usage experience.
The defrosting control device 400 of air conditioner shown in Fig. 4 can be applied in air conditioner, specifically as shown in fig. 6, root
According to the air conditioner 600 of the embodiment of the present invention, comprising: the defrosting control device 400 of air conditioner as shown in Figure 4.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, and the invention proposes a kind of changes of new air conditioner
White control program so that air conditioner default defrosting control logic failure when, can by spare defrosting control logic after
It is continuous that defrosting control is carried out to air conditioner, and then can ensure that air-conditioner system continues heating operation, guarantee the normal heat supply of unit
Amount, improves the usage experience of user.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of defrosting control method of air conditioner characterized by comprising
When air conditioner is run with heating mode, judge whether to carry out the air conditioner by the first defrosting control logic
Defrosting control；
If it is determined that defrosting control can be carried out to the air conditioner by the first defrosting control logic, then pass through described first
Defrosting control logic carries out defrosting control to the air conditioner；
If it is determined that defrosting control cannot be carried out to the air conditioner by the first defrosting control logic, then pass through the second defrost
Control logic carries out defrosting control to the air conditioner；
It is described pass through the second defrosting control logic to the air conditioner carry out defrosting control the step of before, further includes:
Other defrosting controls in all defrost logics that the air conditioner uses in addition to the first defrost logic are detected to patrol
Whether collect can carry out defrosting control to the air conditioner；
Choose the defrosting control logic conduct that can carry out defrosting control in other defrosting control logics to the air conditioner
The second defrosting control logic.
2. the defrosting control method of air conditioner according to claim 1, which is characterized in that judging whether can be by first
The step of defrosting control logic carries out defrosting control to the air conditioner, specifically includes:
Whether abnormal detect sensor relevant to the first defrosting control logic；
If sensor relevant to the first defrosting control logic is normal, judgement can be patrolled by first defrosting control
It collects and defrosting control is carried out to the air conditioner；
If sensor abnormality relevant to the first defrosting control logic, judgement cannot be patrolled by first defrosting control
It collects and defrosting control is carried out to the air conditioner.
3. the defrosting control method of air conditioner according to claim 2, which is characterized in that patrolled with first defrosting control
Collecting relevant sensor is the temperature sensor detected for the temperature of the outdoor heat exchanger to the air conditioner.
4. the defrosting control method of air conditioner according to claim 3, which is characterized in that further include:
If detecting the abnormality of temperature sensors, the air conditioner is forbidden to run in a chiller mode.
5. a kind of defrosting control device of air conditioner characterized by comprising
Judging unit, for when air conditioner is run with heating mode, judge whether can be by the first defrosting control logic pair
The air conditioner carries out defrosting control；
Control unit, for the judging unit determine can by the first defrosting control logic to the air conditioner into
When row defrosting control, defrosting control is carried out to the air conditioner by the first defrosting control logic, and for sentencing described
When disconnected unit determines that defrosting control cannot be carried out to the air conditioner by the first defrosting control logic, pass through the second defrost
Control logic carries out defrosting control to the air conditioner；
Further include:
Second detection unit, for detecting in all defrost logics that the air conditioner uses in addition to the first defrost logic
Other defrosting control logics whether can to the air conditioner carry out defrosting control；
Selecting unit, for choosing the defrost that can carry out defrosting control in other defrosting control logics to the air conditioner
Control logic is as the second defrosting control logic.
6. the defrosting control device of air conditioner according to claim 5, which is characterized in that the judging unit includes:
Whether first detection unit is abnormal for detecting sensor relevant to the first defrosting control logic；
Execution unit, for detecting sensor relevant to the first defrosting control logic just in the first detection unit
Chang Shi, judgement can carry out defrosting control to the air conditioner by the first defrosting control logic, and for described the
When one detection unit detects sensor abnormality relevant to the first defrosting control logic, judgement cannot pass through described first
Defrosting control logic carries out defrosting control to the air conditioner.
7. the defrosting control device of air conditioner according to claim 6, which is characterized in that patrolled with first defrosting control
Collecting relevant sensor is the temperature sensor detected for the temperature of the outdoor heat exchanger to the air conditioner.
8. the defrosting control device of air conditioner according to claim 7, which is characterized in that described control unit is also used to:
When the first detection unit detects the abnormality of temperature sensors, the air conditioner is forbidden to transport in a chiller mode
Row.
9. a kind of air conditioner characterized by comprising
The defrosting control device of air conditioner as described in any one of claim 5 to 8.
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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 |
| 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 |
| 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 |
| CN109210695B (en) * | 2018-09-10 | 2020-11-27 | 青岛海尔空调器有限总公司 | Control method for automatic remediation after freezing of air conditioner |
| 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 |
| CN113531776B (en) * | 2021-07-26 | 2022-05-10 | 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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