CN105627499B - Air-conditioning enters control device, method and the air conditioner of defrosting mode - Google Patents
Air-conditioning enters control device, method and the air conditioner of defrosting mode Download PDFInfo
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- CN105627499B CN105627499B CN201410614058.5A CN201410614058A CN105627499B CN 105627499 B CN105627499 B CN 105627499B CN 201410614058 A CN201410614058 A CN 201410614058A CN 105627499 B CN105627499 B CN 105627499B
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Abstract
The invention discloses the control devices that a kind of air-conditioning enters defrosting mode, the control device that the air-conditioning enters defrosting mode includes controller, the first temperature sensor for detecting air-conditioner outdoor unit leaving air temp and the second temperature sensor for detecting outdoor temperature, the controller receives the second temperature signal of the first temperature signal from first temperature sensor and second temperature sensor, and when the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, then the controller output enters defrosting mode control signal.The invention also discloses control methods and air conditioner that a kind of air-conditioning enters defrosting mode.Since the leaving air temp of air-conditioner outdoor unit can more accurately react the temperature of condenser coil, and then the frosting situation of condenser coil can be more accurately reacted, therefore air-conditioning provided by the invention enters the control device and method of defrosting mode and can accurately control air-conditioning and enter defrosting mode.
Description
Technical field
The present invention relates to the control device and methods that air-conditioning technical field more particularly to a kind of air-conditioning enter defrosting mode.
Background technique
Air conditioner is easy the frosting on outdoor condenser in heating operations, therefore necessary in air conditioner operational process
It defrosts to outdoor condenser.
In the prior art, temperature sensor generally is set on outdoor condenser coil pipe, it is real-time by temperature sensor
The temperature on condenser coil is detected, and decides whether to enter defrosting mould by judging the fall off rate of condenser coil temperature
Formula.Since the area of condenser coil is larger, temperature sensor can only be fixed on a certain regional area of condenser coil, because
This temperature sensor can only real-time detection condenser coil regional area temperature, when frosting unevenness on condenser coil, temperature
Spend sensor cannot the accurately farther away condenser coil region of detecting distance temperature sensor temperature, so as to cause air conditioner
Defrosting mode cannot be enter precisely intoed.
Summary of the invention
It is a primary object of the present invention to solve the technical issues of air conditioner cannot enter precisely into defrosting mode.
To achieve the goals above, the present invention provides the control device that a kind of air-conditioning enters defrosting mode, the air-conditioning into
The control device for entering defrosting mode includes controller, the first temperature sensor for detecting air-conditioner outdoor unit leaving air temp and use
In the second temperature sensor of detection outdoor temperature, the controller is passed with first temperature sensor and second temperature respectively
Sensor connection, first temperature signal and second temperature sensor of the controller reception from first temperature sensor
Second temperature signal, and judge whether the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature；When
When the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, then the controller output enters defrosting
Mode control signal.
Preferably, it further includes for detecting air-conditioner outdoor unit condenser coil that the air-conditioning, which enters the control device of defrosting mode,
Temperature third temperature sensor, the controller also connect with the third temperature sensor, and the controller, which receives, to be come
From the third temperature signal of the third temperature sensor.
Preferably, it further includes for counting compressor of air conditioner runing time that the air-conditioning, which enters the control device of defrosting mode,
Timer, the timer connect with controller, and the controller receives the cumulative time signal from the timer.
In addition, to achieve the goals above, the present invention also provides a kind of control devices for entering defrosting mode based on air-conditioning
The air-conditioning of realization enters the control method of defrosting mode, wherein
The control device that the air-conditioning enters defrosting mode includes controller, for detecting air-conditioner outdoor unit leaving air temp
First temperature sensor and second temperature sensor for detecting outdoor temperature, the controller respectively with first temperature
Sensor is connected with second temperature sensor, and the controller receives the first temperature signal from first temperature sensor
With the second temperature signal of second temperature sensor；
The air-conditioning enter the control method of defrosting mode the following steps are included:
Obtain the second temperature letter of the first temperature signal from first temperature sensor and second temperature sensor
Number；
Judge whether the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature；
When the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, the controller output
Signal is controlled into defrosting mode.
Preferably, it further includes for detecting air-conditioner outdoor unit condenser coil that the air-conditioning, which enters the control device of defrosting mode,
Temperature third temperature sensor, the controller also connect with the third temperature sensor, and the controller, which receives, to be come
From the third temperature signal of the third temperature sensor；
Whether it is greater than the step of the first preset temperature in the difference for judging the second temperature signal and the first temperature signal
Before rapid further include:
The third temperature signal is obtained, and judges whether the third temperature signal is less than or equal to the second default temperature
Degree；
When the third temperature signal is less than or equal to the second preset temperature, then the judgement second temperature is executed
The step of whether difference of signal and the first temperature signal is greater than the first preset temperature.
Preferably, it further includes for counting compressor of air conditioner runing time that the air-conditioning, which enters the control device of defrosting mode,
Timer, the timer connect with controller, and the controller receives the cumulative time signal from the timer；
It is described judge the step of whether the third temperature signal is less than or equal to the second preset temperature before further include:
Judge whether the second temperature signal is less than third preset temperature, and whether is greater than or equal to the 4th default temperature
Degree；
When the second temperature signal is less than third preset temperature and is greater than or equal to four preset temperatures, described in judgement
Whether the first cumulative time signal is greater than the first preset time；
When the first cumulative time signal is greater than the first preset time, then the judgement third temperature letter is executed
Number whether be less than or equal to the second preset temperature the step of.
Preferably, judge whether the second temperature signal is less than third preset temperature described, and whether be greater than or
After the step of equal to four preset temperatures further include:
It is unsatisfactory for being less than third preset temperature in the second temperature signal and is greater than or equal to article of the 4th preset temperature
When part, judge the second temperature signal whether less than the 4th preset temperature；
When the second temperature signal is less than four preset temperatures, judge that the second temperature signal and the first temperature are believed
Number difference whether be greater than the 5th preset temperature；
When the difference of the second temperature signal and the first temperature signal is greater than five preset temperatures, then the control is executed
Device output enters the step of defrosting mode control signal.
Preferably, whether it is greater than the 5th default temperature in the difference for judging the second temperature signal and the first temperature signal
After the step of spending further include:
When the difference of the second temperature signal and the first temperature signal is less than or equal to five preset temperatures, described in judgement
Whether accumulated running time is greater than or equal to the second preset time；
When the accumulated running time being greater than or equal to the second preset time, then executes the controller output entrance and remove
The step of white mode control signal；
When the accumulated running time is less than the second preset time, then execute the judgement second temperature signal with
The step of whether difference of the first temperature signal is greater than five preset temperatures.
In addition, to achieve the goals above, the present invention also provides a kind of air conditioner, the air conditioner includes outdoor unit, institute
Stating outdoor unit includes shell, and the shell is equipped with air outlet, and the air conditioner further includes the control that air-conditioning enters defrosting mode
Device, wherein the control device that the air-conditioning enters defrosting mode includes controller, for detecting air-conditioner outdoor unit leaving air temp
The first temperature sensor and second temperature sensor for detecting outdoor temperature, the controller respectively with first temperature
Degree sensor is connected with second temperature sensor, and the controller receives the first temperature letter from first temperature sensor
Number and second temperature sensor second temperature signal, and judge the second temperature signal and the first temperature signal difference whether
Greater than the first preset temperature；When the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, then institute
It states controller output and enters defrosting mode control signal, first temperature sensor is fixed at the air outlet.
In addition, to achieve the goals above, the present invention also provides a kind of air conditioner, the air conditioner includes outdoor unit, institute
Stating outdoor unit includes shell and condenser coil, and the shell is equipped with air outlet, and the air conditioner further includes that air-conditioning enters defrosting
The control device of mode, wherein the control device that the air-conditioning enters defrosting mode includes controller, for detecting outside air conditioning chamber
First temperature sensor of machine leaving air temp, the second temperature sensor for detecting outdoor temperature and for detecting outside air conditioning chamber
The third temperature sensor of the temperature of machine condenser coil, the controller respectively with first temperature sensor and second temperature
Sensor connection, the controller receive the first temperature signal and second temperature sensor from first temperature sensor
Second temperature signal, the controller also connect with the third temperature sensor, and the controller is received from described the
The third temperature signal of three-temperature sensor；First temperature sensor is fixed at the air outlet, the third temperature
Sensor is fixed on the condenser coil.
Air-conditioning provided by the invention enters the control device and method of defrosting mode, passes through the first temperature sensor sensing chamber
Outer machine leaving air temp detects outdoor temperature by second temperature sensor, is calculated outside outdoor temperature and air conditioning chamber by controller
The difference of machine leaving air temp, and judge whether the difference being calculated is greater than the first preset temperature, when difference is greater than the first default temperature
When spending, then controls air conditioner and enter defrosting mode.Since the leaving air temp of air-conditioner outdoor unit can more accurately react condensation
The temperature of coil pipe, and then the frosting situation of condenser coil can be more accurately reacted, therefore air-conditioning provided by the invention enters
The control device and method of defrosting mode can accurately control air-conditioning and enter defrosting mode.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the control device that air-conditioning of the present invention enters defrosting mode；
Fig. 2 is the flow diagram of the first embodiment for the control method that air-conditioning of the present invention enters defrosting mode；
Fig. 3 is the flow diagram of the second embodiment for the control method that air-conditioning of the present invention enters defrosting mode；
Fig. 4 is the flow diagram of the 3rd embodiment for the control method that air-conditioning of the present invention enters defrosting mode；
Fig. 5 is the flow diagram of the fourth embodiment for the control method that air-conditioning of the present invention enters defrosting mode；
Fig. 6 is the flow diagram of the 5th embodiment of the control method that air-conditioning of the present invention enters defrosting mode.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides the control device that a kind of air-conditioning enters defrosting mode.
Referring to Fig.1, Fig. 1 is the structural schematic diagram for the control device that air-conditioning of the present invention enters defrosting mode.
In one embodiment, it includes controller 10, for detecting air conditioning chamber which, which enters the control device of defrosting mode,
First temperature sensor 20 of outer machine leaving air temp and second temperature sensor 30 for detecting outdoor temperature, the controller
10 connect with first temperature sensor 20 and second temperature sensor 30 respectively, and the controller 10 is received from described the
First temperature signal of one temperature sensor 20 and the second temperature signal of second temperature sensor 30, and judge second temperature
Whether the difference of degree signal and the first temperature signal is greater than the first preset temperature；When the second temperature signal and the first temperature signal
Difference when being greater than the first preset temperature, then the controller 10 output enters defrosting mode and controls signal.
In the present embodiment, the control device that above-mentioned air-conditioning enters defrosting mode is applied in air conditioner, is specifically used for
When air-conditioning opens heating mode, control air conditioner accurately starts defrosting mode in outdoor condenser frosting.
Air conditioner includes outdoor unit, and outdoor unit includes shell and condenser coil, and the shell is equipped with air outlet, and above-mentioned the
One temperature sensor 20 is fixed at the air outlet of outdoor unit, to detect the leaving air temp of outdoor unit；Above-mentioned second temperature sensing
30 real-time detection outdoor temperature of device, can be fixed on the lateral wall of outdoor shell, it is preferable that should be far from air outlet, to prevent
The cold wind of air outlet blowout influences accurate detection of the second temperature sensor 30 to outdoor temperature.The leaving air temp of air-conditioner outdoor unit
The temperature of condenser coil can be reacted, more accurately so as to more accurately react the frosting situation of condenser coil, room
The difference of the leaving air temp of outer temperature and air-conditioner outdoor unit is bigger, then shows that frost more likely occurs in condenser coil.
The size of above-mentioned first preset temperature can be configured according to actual needs, for example, the first preset temperature takes
Value may range from 0 to 4 DEG C.
When air conditioner opens heating mode, controller 10 is believed according to the second temperature signal Tw received and the first temperature
Number Tc calculates the difference Tw-Tc of the leaving air temp of outdoor temperature and air conditioner, and judges whether the difference being calculated is greater than first
Preset temperature, when Tw-Tc is greater than the first preset temperature, then controller 10 is thought to need to defrost to air-conditioning at this time, output
Signal is controlled into defrosting mode, enters defrosting mode to control air conditioner.
Air-conditioning provided in this embodiment enters the control device of defrosting mode, by 20 sensing chamber of the first temperature sensor outside
Machine leaving air temp, detects outdoor temperature by second temperature sensor 30, calculates outdoor temperature and air conditioning chamber by controller 10
The difference of outer machine leaving air temp, and judge whether the difference being calculated is greater than the first preset temperature, it is preset when difference is greater than first
When temperature, then controls air conditioner and enter defrosting mode.Since the leaving air temp of air-conditioner outdoor unit can more accurately react cold
The temperature of solidifying coil pipe, and then can more accurately react the frosting situation of condenser coil, thus air-conditioning provided by the invention into
The control device for entering defrosting mode can accurately control air-conditioning and enter defrosting mode.
Further, in order to enable air-conditioning more accurately enters defrosting mode, the reliability of air conditioner is improved, based on upper
One embodiment, in the present embodiment, the control device that the air-conditioning enters defrosting mode further includes for detecting air-conditioner outdoor unit
The third temperature sensor 40 of the temperature of condenser coil, the controller 10 are also connect with the third temperature sensor 40, institute
It states controller 10 and receives the third temperature signal from the third temperature sensor 40.
In the present embodiment, judge whether the difference of second temperature signal and the first temperature signal is greater than first in controller 10
Before preset temperature, controller 10 first judges whether third temperature signal is less than or equal to the second preset temperature；In the third
When temperature signal is less than or equal to the second preset temperature, then the execution of controller 10 judges the second temperature signal and the first temperature
The step of whether difference of signal is greater than the first preset temperature.That is controller 10 first judges whether the temperature of condenser coil is less than or waits
In the second preset temperature, if so, judging whether the difference of outdoor temperature and outdoor unit leaving air temp is greater than the first preset temperature again.
The size of above-mentioned second preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, second
The value range of preset temperature is 0 to 2 DEG C.
Further, in order to improve the reliability of air conditioner further such that air-conditioning more accurately enters defrosting mode,
Based on the above embodiment, in the present embodiment, it further includes for counting air-conditioning that the air-conditioning, which enters the control device of defrosting mode,
The timer 50 of compressor operating time, the timer 50 are connect with controller 10, and the controller 10 is received from described
The cumulative time signal of timer 50.
In the present embodiment, controller 10 judge third temperature signal whether be less than or equal to the second preset temperature it
Before, controller 10 first judges whether the current cumulative time is greater than the first preset time, if so, judging that third temperature signal is again
It is no to be less than or equal to the second preset temperature.
The size of above-mentioned first preset time can be configured according to actual needs, it is preferable that in the present embodiment, first
The value range of preset time is 25 to 60 minutes.
The present invention further provides it is a kind of based on above-mentioned air-conditioning enter defrosting mode control device realize air-conditioning into
Enter the control method of defrosting mode.
Referring to Fig. 2, Fig. 2 is the process signal of the first embodiment for the control method that air-conditioning of the present invention enters defrosting mode
Figure, in the present embodiment, the air-conditioning enter the control method of defrosting mode the following steps are included:
Step S10 obtains the of the first temperature signal from first temperature sensor and second temperature sensor
Two temperature signals；
Step S20, judges whether the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature；
The size of above-mentioned first preset temperature can be configured according to actual needs, for example, the first preset temperature takes
Value may range from 0 to 4 DEG C.
Step S30, when the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, the control
Device output processed enters defrosting mode and controls signal.
When air conditioner opens heating mode, the first temperature signal that the first temperature sensor will test is sent to control
Device, the second temperature signal that second temperature sensor will test are sent to controller, and controller is according to the second temperature received
Signal Tw and the first temperature signal Tc is spent, the difference Tw-Tc of the leaving air temp of outdoor temperature and air conditioner is calculated, and judges to calculate
To difference whether be greater than the first preset temperature, when Tw-Tc is greater than the first preset temperature, then controller is thought to need at this time pair
Air-conditioning defrosts, and output enters defrosting mode and controls signal, enters defrosting mode to control air conditioner.
When the difference of second temperature signal and the first temperature signal is less than or equal to the first preset temperature, then step is continued to execute
Rapid S10.
Air-conditioning provided in this embodiment enters the control method of defrosting mode, detects outdoor unit by the first temperature sensor
Leaving air temp detects outdoor temperature by second temperature sensor, calculates outdoor temperature by controller and goes out with air-conditioner outdoor unit
The difference of air temperature, and judge whether the difference being calculated is greater than the first preset temperature, when difference is greater than the first preset temperature,
It then controls air conditioner and enters defrosting mode.Since the leaving air temp of air-conditioner outdoor unit can more accurately react condenser coil
Temperature, and then the frosting situation of condenser coil can be more accurately reacted, therefore air-conditioning provided by the invention enters defrosting mould
The control device of formula can accurately control air-conditioning and enter defrosting mode.
Further, in order to enable air-conditioning more accurately enters defrosting mode, the reliability of air conditioner is improved, referring to figure
3, Fig. 3 enter the flow diagram of the second embodiment of the control method of defrosting mode for air-conditioning of the present invention, are based on above-mentioned implementation
Example, in the present embodiment, before step S10 further include:
Step S40 obtains the third temperature signal, and judges whether the third temperature signal is less than or equal to second
Preset temperature；
If so, thening follow the steps S10；If it is not, then continuing to execute step S40.
In the present embodiment, judge whether the difference of second temperature signal and the first temperature signal is greater than first in advance in controller
If before temperature, controller first obtains third temperature signal and judges whether third temperature signal is less than or equal to the second default temperature
Degree；When the third temperature signal is less than or equal to the second preset temperature, then controller executes step S10.I.e. controller is first
Judge whether the temperature of condenser coil is less than or equal to the second preset temperature, if so, judging that outdoor temperature goes out with outdoor unit again
Whether the difference of air temperature is greater than the first preset temperature.
The size of above-mentioned second preset temperature can be configured according to actual needs, it is preferable that in the present embodiment, second
The value range of preset temperature is 0 to 2 DEG C.
Further, in order to improve the reliability of air conditioner further such that air-conditioning more accurately enters defrosting mode,
Referring to Fig. 4, Fig. 4 is the flow diagram of the 3rd embodiment for the control method that air-conditioning of the present invention enters defrosting mode, based on upper
Embodiment is stated, in the present embodiment, before step S40 further include:
Step S50 judges whether the second temperature signal is less than third preset temperature, and whether is greater than or equal to the
Four preset temperatures；
Step S60, when the second temperature signal is less than third preset temperature and is greater than or equal to four preset temperatures,
Judge whether the first cumulative time signal is greater than the first preset time, if so, thening follow the steps S40；If it is not, then continuing to hold
Row judges the step of whether the first cumulative time signal is greater than the first preset time.
In the present embodiment, the size of third preset temperature and the 4th preset temperature can be set according to actual needs
It sets, it is preferable that in the present embodiment, the value range of third preset temperature is 7 to 9 DEG C, and the value range of the 4th preset temperature is 0
To 2 DEG C.
First preset time can be configured according to actual needs, it is preferable that in the present embodiment, the first preset time
Value range is 25 to 60 minutes.Timer be should be noted that during accumulative timing, when air conditioner is every time by defrosting
When mode is jumped out (when switching to heating mode by defrosting mode), then controller control timer reset for the first cumulative time,
And start to add up the first cumulative time of timing again.
In the present embodiment, controller first determine whether outdoor temperature whether be located at third preset temperature and the 4th preset temperature it
Between, if so, judge whether current first cumulative time is greater than the first preset time again, and when being greater than the first preset time,
Step S40 is executed again；If it is not, then continue to execute step S60, to further improve the operational efficiency of air conditioner, one is gone forward side by side
Step improves the accuracy that air-conditioning enters defrosting mode.
Further, in order to improve the reliability of air conditioner further such that air-conditioning more accurately enters defrosting mode,
Referring to Fig. 5, Fig. 5 is the flow diagram of the fourth embodiment for the control method that air-conditioning of the present invention enters defrosting mode, based on upper
Embodiment is stated, in the present embodiment, after step S50 further include:
Step S70 is unsatisfactory for being less than third preset temperature and being greater than or equal to the 4th presetting in the second temperature signal
When the condition of temperature, judge the second temperature signal whether less than the 4th preset temperature；
Step S80, if so, it is default to judge whether the difference of the second temperature signal and the first temperature signal is greater than the 5th
Temperature；
When the difference of the second temperature signal and the first temperature signal is greater than five preset temperatures, S30 is thened follow the steps.
It should be noted that when second temperature signal (i.e. outdoor temperature) is more than or equal to four preset temperatures, then after
It is continuous to execute step S50.
In the present embodiment, the size of the 5th preset temperature can be configured according to actual needs, it is preferable that this implementation
In example, the value range of the 5th preset temperature is 0 to 2 DEG C.It should be noted that in the present embodiment, the above-mentioned first default temperature
The value range of degree is more preferably 2 to 4 DEG C.
Air-conditioning provided in this embodiment enters in the control method of defrosting mode, judges outdoor temperature less than in controller
When four preset temperatures, further judges whether the difference of outdoor temperature and outdoor unit leaving air temp is greater than the 5th preset temperature, work as meter
When the difference of calculation is greater than five preset temperatures, S30 is thened follow the steps, so that the operational efficiency of air conditioner is further improved, and
Further improve the accuracy that air-conditioning enters defrosting mode.
Further, in order to improve the reliability of air conditioner further such that air-conditioning more accurately enters defrosting mode,
Referring to Fig. 6, Fig. 6 is the flow diagram of the 5th embodiment of the control method that air-conditioning of the present invention enters defrosting mode, based on upper
Embodiment is stated, in the present embodiment, after step S80 further include:
Step S90, when the difference of the second temperature signal and the first temperature signal is less than or equal to five preset temperatures,
Judge whether the accumulated running time is greater than or equal to the second preset time；
When the accumulated running time being greater than or equal to the second preset time, S30 is thened follow the steps；
When the accumulated running time is less than the second preset time, then step S80 is continued to execute.
In the present embodiment, the size of the second preset time can be configured according to actual needs, it is preferable that the present embodiment
In, the value range of the second preset time is 2 to 4 hours.It should be noted that timer is during accumulative timing, when
When air conditioner is jumped out by defrosting mode every time (when switching to heating mode by defrosting mode), then controller control timer is by the
Two cumulative times reset, and started to add up the second cumulative time of timing again.
In the present embodiment, controller when judging outdoor temperature less than four preset temperatures, as long as judge second it is accumulative when
Between be greater than or equal to the second preset time, just control air conditioner open defrosting mode, to further improve the fortune of air conditioner
Line efficiency, and further improve the accuracy that air-conditioning enters defrosting mode.
It should be noted that above-mentioned air-conditioning enter defrosting mode control method be through the foregoing embodiment in air-conditioning
Into defrosting mode control device realize, the control device that above-mentioned air-conditioning enters defrosting mode has above-mentioned all air-conditionings
Into the function of the control method of defrosting mode.
The present invention also provides a kind of air conditioner, which includes outdoor unit, and the outdoor unit includes shell, the shell
It is equipped with air outlet, which further includes the control device that air-conditioning enters defrosting mode, which enters the control of defrosting mode
The structure of device processed can refer to above-described embodiment, and details are not described herein.Wherein, the first temperature sensor is fixed on the air outlet
Place, third temperature sensor are fixed on the condenser coil.Naturally, since the air conditioner of the present embodiment is using upper
The technical solution that air-conditioning enters the control device of defrosting mode is stated, therefore there is the air conditioner above-mentioned air-conditioning to enter defrosting mode
All beneficial effects of control device.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (5)
1. the control device that a kind of air-conditioning enters defrosting mode, which is characterized in that the air-conditioning enters the control dress of defrosting mode
Set the first temperature sensor including controller, for detecting air-conditioner outdoor unit leaving air temp and for detecting outdoor temperature
Two temperature sensors, the controller are connect with first temperature sensor and second temperature sensor respectively, the control
Device receives the second temperature signal of the first temperature signal from first temperature sensor and second temperature sensor, and sentences
Whether the difference of the second temperature signal and the first temperature signal of breaking is greater than the first preset temperature；When the second temperature signal with
When the difference of first temperature signal is greater than the first preset temperature, then the controller output enters defrosting mode control signal；
The air-conditioning enter defrosting mode control device further include for detecting the temperature of air-conditioner outdoor unit condenser coil
Three-temperature sensor, the controller are also connect with the third temperature sensor, and the controller, which receives, comes from the third
The third temperature signal of temperature sensor；
The controller is also used to obtain the third temperature signal, and judges whether the third temperature signal is less than or equal to
Second preset temperature；When the third temperature signal is less than or equal to the second preset temperature, then the judgement described the is executed
The step of whether difference of two temperature signals and the first temperature signal is greater than the first preset temperature；
The control device that the air-conditioning enters defrosting mode further includes timer for counting compressor of air conditioner runing time, institute
It states timer to connect with controller, the controller receives the cumulative time signal from the timer；
Whether the controller is also used to judge whether the second temperature signal is less than third preset temperature, and be greater than or wait
In the 4th preset temperature；When the second temperature signal is less than third preset temperature and is greater than or equal to four preset temperatures,
Judge whether the cumulative time signal is greater than the first preset time；It is greater than the first preset time in the cumulative time signal
When, then execute described the step of whether the third temperature signal is less than or equal to the second preset temperature judged.
2. a kind of air-conditioning that the control device for entering defrosting mode based on air-conditioning described in claim 1 is realized enters defrosting mode
Control method, which is characterized in that the air-conditioning enter the control method of defrosting mode the following steps are included:
Obtain the second temperature signal of the first temperature signal from first temperature sensor and second temperature sensor；
Judge whether the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature；
When the difference of the second temperature signal and the first temperature signal is greater than the first preset temperature, the controller output enters
Defrosting mode controls signal；
The step of whether difference for judging the second temperature signal and the first temperature signal is greater than the first preset temperature it
Before further include:
The third temperature signal is obtained, and judges whether the third temperature signal is less than or equal to the second preset temperature；
When the third temperature signal is less than or equal to the second preset temperature, then the judgement second temperature signal is executed
And the step of whether difference of the first temperature signal is greater than the first preset temperature；
It is described judge the step of whether the third temperature signal is less than or equal to the second preset temperature before further include:
Judge whether the second temperature signal is less than third preset temperature, and whether is greater than or equal to the 4th preset temperature；
When the second temperature signal is less than third preset temperature and is greater than or equal to four preset temperatures, judge described accumulative
Whether time signal is greater than the first preset time；
When the cumulative time signal is greater than the first preset time, then execute described judge whether the third temperature signal is small
In or be equal to the second preset temperature the step of.
3. the control method that air-conditioning as claimed in claim 2 enters defrosting mode, which is characterized in that in the judgement described the
Two temperature signals also wrap after whether being less than third preset temperature, and the step of whether being greater than or equal to four preset temperatures
It includes:
When the second temperature signal is unsatisfactory for being less than third preset temperature and being greater than or equal to the condition of the 4th preset temperature,
Judge the second temperature signal whether less than the 4th preset temperature；
When the second temperature signal is less than four preset temperatures, judge the second temperature signal and the first temperature signal it
Whether difference is greater than the 5th preset temperature；
When the difference of the second temperature signal and the first temperature signal is greater than five preset temperatures, then it is defeated to execute the controller
The step of entering defrosting mode control signal out.
4. the control method that air-conditioning as claimed in claim 3 enters defrosting mode, which is characterized in that in the judgement described the
After the step of whether difference of two temperature signals and the first temperature signal is greater than five preset temperatures further include:
When the difference of the second temperature signal and the first temperature signal is less than or equal to five preset temperatures, judge described accumulative
Whether time signal is greater than or equal to the second preset time；
When the cumulative time signal is greater than or equal to the second preset time, then executes the controller output and enter defrosting mould
Formula controls the step of signal；
When the cumulative time signal is less than the second preset time, then the judgement second temperature signal and first are executed
The step of whether difference of temperature signal is greater than five preset temperatures.
5. a kind of air conditioner, including outdoor unit, the outdoor unit includes shell and condenser coil, and the shell is equipped with outlet air
Mouthful, which is characterized in that the air conditioner further includes the control device that air-conditioning as described in claim 1 enters defrosting mode, institute
It states the first temperature sensor to be fixed at the air outlet, the third temperature sensor is fixed on the condenser coil.
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| CN106288230B (en) * | 2016-09-22 | 2019-03-12 | Tcl空调器(中山)有限公司 | The defrosting control method and device of window air conditioner |
| CN110469963B (en) * | 2019-07-24 | 2022-05-31 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111550906A (en) * | 2020-05-21 | 2020-08-18 | 广东美的制冷设备有限公司 | Anti-freezing control method for indoor unit of air conditioner and air conditioner |
| CN113124544B (en) * | 2021-04-20 | 2023-04-25 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method thereof |
| CN114688683B (en) * | 2022-03-15 | 2024-05-24 | 青岛海尔空调器有限总公司 | Air conditioner and defrosting control method thereof |
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| CN101545691A (en) * | 2009-04-09 | 2009-09-30 | 宁波奥克斯空调有限公司 | A novel high heating capacity air conditioner and its heating method |
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| KR101500730B1 (en) * | 2008-02-14 | 2015-03-09 | 엘지전자 주식회사 | Controlling method of an air conditioner |
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| CN101545691A (en) * | 2009-04-09 | 2009-09-30 | 宁波奥克斯空调有限公司 | A novel high heating capacity air conditioner and its heating method |
| CN102022872A (en) * | 2010-12-03 | 2011-04-20 | 劳特斯空调(江苏)有限公司 | Defrosting control method for intelligent air cooling heat pump |
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