CN110940057A - Control method for slowing down defrosting attenuation of air conditioner and air conditioner - Google Patents
Control method for slowing down defrosting attenuation of air conditioner and air conditioner Download PDFInfo
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- CN110940057A CN110940057A CN201911296976.7A CN201911296976A CN110940057A CN 110940057 A CN110940057 A CN 110940057A CN 201911296976 A CN201911296976 A CN 201911296976A CN 110940057 A CN110940057 A CN 110940057A
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method for slowing down defrosting attenuation of an air conditioner, which comprises the following steps: s0, the air conditioner enters a heating mode; s1, controlling the running frequency of the compressor of the air conditioner according to the temperature and the change rate of the outdoor coil; s2, controlling the rotation speed of the outdoor fan of the air conditioner according to the difference value between the outdoor environment temperature and the outdoor coil temperature; and S3, determining whether to enter a defrosting mode according to the indoor coil temperature. From this, can be under the condition that does not increase the air conditioner cost, through the difference of outdoor coil pipe temperature rate of change, outdoor ambient temperature and outdoor coil pipe temperature, set up compressor frequency, outdoor fan rotational speed control and change the frost, slow down the air conditioner and heat the decay, ensure simultaneously that the air-out temperature is unlikely to the low excessively, promote the travelling comfort of body feeling.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for slowing down defrosting attenuation of an air conditioner and the air conditioner.
Background
When the air conditioner is used for heating in winter, the outdoor heat exchanger exchanges heat with the external environment, absorbs heat of the outdoor environment and transfers the heat to the indoor environment, and when the surface temperature of the outdoor heat exchanger is lower than the dew point temperature of air, the outdoor heat exchanger frosts, so that the heating effect is influenced. However, the conventional defrosting method often has the problem that the heating capacity of the air conditioner is too attenuated, and the user experience of the air conditioner is affected.
Disclosure of Invention
The invention solves the problem of slowing down the attenuation of the air conditioner in the defrosting process and simultaneously ensuring that the air outlet temperature is not too low.
In order to solve the above problems, the present invention provides a control method for slowing down the defrosting attenuation of an air conditioner, which comprises:
s0, the air conditioner enters a heating mode;
s1, controlling the running frequency of the compressor of the air conditioner according to the temperature and the change rate of the outdoor coil;
s2, controlling the rotation speed of the outdoor fan of the air conditioner according to the difference value between the outdoor environment temperature and the outdoor coil temperature;
and S3, determining whether to enter a defrosting mode according to the indoor coil temperature.
From this, can be under the condition that does not increase the air conditioner cost, through the difference of outdoor coil pipe temperature rate of change, outdoor ambient temperature and outdoor coil pipe temperature, set up compressor frequency, outdoor fan rotational speed control and change the frost, slow down the air conditioner and heat the decay, ensure simultaneously that the air-out temperature is unlikely to the low excessively, promote the travelling comfort of body feeling.
Further, the step S1 includes:
s101, judging whether the temperature of the outdoor coil is less than or equal to a first temperature threshold, if the temperature of the outdoor coil is less than or equal to the first temperature threshold, reducing the running frequency of the compressor of the air conditioner, and turning to the step S102;
s102, after the air conditioner compressor runs for the first preset time at the current running frequency, judging whether the change rate of the outdoor coil temperature is greater than the preset temperature change rate, if the change rate of the outdoor coil temperature is greater than the preset temperature change rate, reducing the running frequency of the air conditioner compressor, and turning to the step S2.
The frequency of the compressor of the air conditioner is adjusted through the temperature of the outdoor coil pipe and the change rate of the temperature, the attenuation of the heating capacity of the air conditioner can be effectively reduced, the fluctuation of the air outlet temperature is reduced, and the user experience is improved.
Further, the reducing the operating frequency of the air conditioner compressor includes:
and reducing the set compression frequency of the current air conditioner by a preset frequency correction value, wherein the frequency correction value is 3-5 Hz.
Further, in step S101, if the temperature of the outdoor coil is greater than the first temperature threshold, the air conditioner maintains the current state, and the process returns to step S101;
in step S102, if the rate of change of the outdoor coil temperature is less than or equal to the predetermined rate of change of the temperature, the air conditioner maintains the current state, and the process returns to step S102.
Further, the first temperature threshold value is-6 to-4 ℃; the first preset time is 6-9 min.
Further, the step S2 includes:
and after the air conditioner compressor runs at the current running frequency for the second preset time, judging whether the difference value between the outdoor environment temperature and the outdoor coil temperature is greater than the difference value between the preset defrosting temperature difference value and the second temperature threshold, if the difference value between the outdoor environment temperature and the outdoor coil temperature is greater than the difference value between the preset defrosting temperature difference value and the second temperature threshold, increasing the rotating speed of the outdoor fan, and turning to the step S3.
The rotating speed of the external fan is increased by judging the difference value between the outdoor environment temperature and the outdoor coil pipe temperature, the air inlet quantity of the outdoor side can be increased, the heat exchange quantity of the outdoor side of the air conditioner is increased, and the frosting degree can be reduced.
Further, the increasing the rotating speed of the outdoor fan comprises:
and increasing the set rotating speed of the current outdoor fan by a preset rotating speed correction value, wherein the rotating speed correction value is 30-50 r/min.
Further, in the step S2, if the difference between the outdoor ambient temperature and the outdoor coil temperature is less than or equal to the difference between the predetermined defrosting temperature difference and the second temperature threshold, the air conditioner keeps the current state, and the process returns to the step S2.
Further, the second temperature threshold is 2-4 ℃; the second preset time is 4-6 min.
Further, the step S3 includes:
and after the outdoor fan of the air conditioner runs for a third preset time at the current rotating speed, judging whether the temperature of the indoor coil pipe is greater than a third temperature threshold value, and if the temperature of the indoor coil pipe is less than or equal to the third temperature threshold value, entering a normal defrosting mode.
Thus, the defrosting process can be surely entered in an appropriate condition by the comparison result of the indoor coil temperature with the predetermined threshold value.
Further, in the step S3, if the indoor coil temperature is greater than the third temperature threshold, the air conditioner maintains the current state, and the process returns to the step S3.
Further, the value range of the third temperature threshold is 30-35 ℃; the third preset time is 4-6 min.
Further, the step S0 further includes:
and operating in the heating mode for a preset time, and enabling the air conditioner to enter a stable operation state.
According to another aspect of the present invention, there is provided an air conditioner including:
a storage unit for storing executable instructions
One or more processing units executing the control method as described above according to the executable instructions.
The beneficial effects of the air conditioner and the control method for slowing down the defrosting attenuation of the air conditioner are the same, and the detailed description is omitted here.
Further, the air conditioner further comprises:
the detection unit comprises an outdoor coil temperature sensor, an outdoor environment temperature sensor, an indoor coil temperature sensor, an outdoor fan rotating speed sensor and a compressor frequency detection device.
Drawings
FIG. 1 is a flowchart of a control method for reducing the defrosting attenuation of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method for reducing the defrosting attenuation of an air conditioner according to an embodiment of the present invention.
Detailed Description
Aiming at the problem that the outdoor heat exchanger frosts when the surface temperature of the outdoor heat exchanger is lower than the dew point temperature of air in the heating operation process of the air conditioner in winter, some air conditioners can keep the same frequency to operate in the heating operation process at present, the temperature of an outer disc gradually decreases along with the gradual reduction of the surface temperature of the outdoor heat exchanger, and when the temperature difference requirement between the outer disc and an outer ring is met, defrosting control is carried out; the conventional control method has the defect that the heating capacity before defrosting is far lower than that during stable operation, namely, the attenuation is too large, and the air outlet temperature before defrosting is too low, so that the user experience of air conditioner heating is influenced.
The invention provides a control method for slowing down defrosting attenuation of an air conditioner, which is a method for controlling the running frequency of a compressor and the rotating speed of an external machine by detecting the temperature and the change rate of an outdoor coil and the difference value of the outdoor environment and the temperature of an external coil in real time in the heating operation of the air conditioner, thereby reducing the frosting degree of an outdoor heat exchanger and slowing down the attenuation of the heating capacity.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In a first exemplary embodiment of the present invention, a control method for mitigating the attenuation of defrosting of an air conditioner is provided. FIG. 1 is a flowchart of a control method for reducing the defrosting attenuation of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, the control method includes:
s0, the air conditioner operates for a preset time in the heating mode and enters a stable operation state;
s1, controlling the running frequency of the compressor of the air conditioner according to the temperature and the change rate of the outdoor coil;
s2, controlling the rotation speed of the outdoor fan of the air conditioner according to the difference value between the outdoor environment temperature and the outdoor coil temperature;
and S3, determining whether to enter a defrosting mode according to the indoor coil temperature.
From this, can be under the condition that does not increase the air conditioner cost, through the difference of outdoor coil pipe temperature rate of change, outdoor ambient temperature and outdoor coil pipe temperature, set up compressor frequency, outdoor fan rotational speed control and change the frost, slow down the air conditioner and heat the decay, ensure simultaneously that the air-out temperature is unlikely to the low excessively, promote the travelling comfort of body feeling.
Specifically, the method for controlling the operating frequency of the compressor of the air conditioner according to the temperature of the outdoor coil and the change rate thereof in the step S1 includes:
s101, judging whether the temperature of the outdoor coil is less than or equal to a first temperature threshold value:
if the temperature of the outdoor coil is less than or equal to the first temperature threshold, reducing the running frequency of the compressor of the air conditioner, and turning to the step S102;
if the temperature of the outdoor coil is greater than the first temperature threshold value, the air conditioner keeps the current state, and the step S101 is returned to;
s102, after the air conditioner compressor runs for a first preset time at the current running frequency, judging whether the change rate of the outdoor coil temperature is greater than the preset temperature change rate:
if the change rate of the outdoor coil temperature is larger than the preset temperature change rate, reducing the running frequency of the air conditioner compressor, and turning to the step S2;
if the change rate of the outdoor coil temperature is less than or equal to the predetermined temperature change rate, the air conditioner keeps the current state, and the process returns to the step S102.
Therefore, the frequency of the compressor of the air conditioner is adjusted through the temperature of the outdoor coil pipe and the change rate of the temperature, the attenuation of the heating capacity of the air conditioner can be effectively reduced, the fluctuation of the air outlet temperature is reduced, and the user experience is improved.
In the steps S101 and S102, the method for reducing the operating frequency of the air conditioner compressor includes: the current air conditioner set compression frequency is lowered by a predetermined frequency correction value B1.
The predetermined frequency correction value B1 is 3-5Hz, and the first temperature threshold value is-6 to-4 ℃; the first preset time is 6-9 min.
After the operation frequency of the compressor of the air conditioner is decreased in step S102, the step S2 is further executed to control the rotation speed of the outdoor fan of the air conditioner according to the difference between the outdoor environment temperature and the outdoor coil temperature. Specifically, the step S2 includes:
after the compressor of the air conditioner runs for a second preset time at the current running frequency, whether the difference value between the outdoor environment temperature and the outdoor coil temperature is larger than the difference value between the preset defrosting temperature difference value and a second temperature threshold value is judged:
if the difference between the outdoor environment temperature and the outdoor coil temperature is larger than the difference between the preset defrosting temperature difference and the second temperature threshold, increasing the rotating speed of the outdoor fan, and turning to the step S3;
if the difference between the outdoor environment temperature and the outdoor coil temperature is less than or equal to the difference between the predetermined defrosting temperature difference and the second temperature threshold, the air conditioner keeps the current state, and the step S2 is returned.
And the step of increasing the rotating speed of the outdoor fan comprises the step of increasing the set rotating speed of the outdoor fan by a preset rotating speed correction value. Therefore, the rotating speed of the external fan is increased by judging the difference value between the outdoor environment temperature and the outdoor coil pipe temperature, the outdoor side air inlet amount can be increased, the outdoor side heat exchange amount of the air conditioner is increased, and the frosting degree can be reduced.
Illustratively, the corrected rotating speed value is 30-50r/min, the second temperature threshold value is 2-4 ℃, and the second preset time is 4-6 min.
After the step S2 of increasing the rotation speed of the outdoor fan, performing a step S3 of determining whether to enter a defrosting mode according to the indoor coil temperature, wherein the step S3 includes:
after the outdoor fan of the air conditioner runs for a third preset time at the current rotating speed, judging whether the temperature of the indoor coil pipe is greater than a third temperature threshold value or not, and if the temperature of the indoor coil pipe is less than or equal to the third temperature threshold value, entering a normal defrosting mode;
if the indoor coil temperature is greater than the third temperature threshold, the air conditioner maintains the current state and returns to step S3.
Thus, the defrost sequence is ensured to be entered in due circumstances by the comparison of the indoor coil temperature to a predetermined threshold.
Illustratively, the value range of the third temperature threshold is 30-35 ℃, and the third preset time is 4-6 min.
It can be understood that the parameters of the first temperature threshold, the second temperature threshold, the third temperature threshold, the first predetermined time, the second predetermined time, the third predetermined time, the frequency correction value, the rotation speed correction value, and the like in this embodiment may be adjusted according to actual needs.
In yet another exemplary embodiment of the present invention, an air conditioner is provided. Fig. 2 is a block diagram of an air conditioner according to an embodiment of the present invention. As shown in fig. 2, the air conditioner includes a storage unit, one or more processing units.
The storage unit is used for storing executable instructions; one or more processing units execute the control method according to the previous embodiment according to the executable instructions. Specifically, the processing unit comprises a control unit and a calculating unit, wherein the control unit is used for controlling the rotating speed of the outdoor fan, the running frequency of the compressor and executing a defrosting program, and the calculating unit is used for calculating the change rate delta T of the temperature of the outdoor coil pipe per minute.
Further, in some embodiments, the air conditioner is provided with a detection unit, wherein the detection unit comprises an outdoor coil temperature sensor, an outdoor environment temperature sensor, an indoor coil temperature sensor, an outdoor fan rotating speed sensor and a compressor frequency detection device. It is understood that, in other embodiments, the detection unit may also be connected to the air conditioner as an external device to implement the detection function.
The following describes a control method for reducing the defrosting attenuation of an air conditioner according to the present invention with specific embodiments.
Example one
FIG. 3 is a flowchart illustrating a control method for reducing the defrosting attenuation of an air conditioner according to an embodiment of the present invention. The outdoor coil temperature sensor is T1, the outdoor environment temperature sensor is T2, the indoor coil temperature sensor is T3, the outdoor fan rotating speed set value is R, the compressor operating frequency set value is H, the set defrosting temperature difference value is Tdil, and the outer plate temperature change rate is delta T. As shown in fig. 3, the control method includes:
s0, detecting the value T1 of the outdoor coil pipe sensor after the air conditioner unit is started and stably runs for 10 min;
s1, when the temperature T1 of the outdoor coil pipe is detected to be not more than A, the first action is started, firstly, the current compressor running frequency set value H is reduced by a preset frequency correction value B1, namely the corrected frequency set value H1 is H-B1, and B1 is 3-5 Hz; if the T1 is not satisfied with the A or less, processing is not carried out, whether the T1 is satisfied with the A or less is detected in real time, and the reciprocating circulation is carried out; wherein, A is-5 ℃;
when the compressor frequency is operated for tlmin at H1, if the temperature change rate delta T of the outdoor side coil is more than C, starting a second action, and reducing the current compressor operation frequency set value H1 by a preset frequency correction value B1 again, namely the corrected frequency set value H2 is H1-B1; if not, not processing, and detecting whether the delta T is larger than C in real time; wherein t1 is 8min, C is 0.5 ℃/min;
s2, when the frequency of the compressor runs for T2min at H2, if T2-T1 is more than or equal to Tdi1-D, starting a third action, setting the rotating speed of the outdoor fan to be R + delta R, increasing the rotating speed of the external fan, increasing the heat exchange quantity of the outer side, slowing down the frosting degree, if not, processing, and detecting whether T2-T1 is more than or equal to Tdil-D or not in real time; wherein t2 is 5min, and Δ r is 40 r/min;
and S3, when the rotating speed of the external fan runs for T3min at R + delta R, if T3 is satisfied and E is not more than E, starting a fourth action to defrost the unit, if not, not processing, and detecting whether T3 is not more than E in real time. Wherein t3 is 5min, and E is 32 ℃.
The control method of the embodiment controls defrosting through the temperature and the change rate of the outdoor coil pipe and the difference value between the outdoor environment temperature and the outdoor coil pipe temperature, reduces the frequency of the compressor, improves the rotating speed of the outdoor fan, slows down the heating attenuation of the air conditioner, and meanwhile ensures that the outlet air temperature is not less than 37 ℃, and improves the comfort of body feeling.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A control method for slowing down defrosting attenuation of an air conditioner is characterized by comprising the following steps:
s0, the air conditioner enters a heating mode;
s1, controlling the running frequency of the compressor of the air conditioner according to the temperature and the change rate of the outdoor coil;
s2, controlling the rotation speed of the outdoor fan of the air conditioner according to the difference value between the outdoor environment temperature and the outdoor coil temperature;
and S3, determining whether to enter a defrosting mode according to the indoor coil temperature.
2. The control method according to claim 1, wherein the step S1 includes:
s101, judging whether the temperature of the outdoor coil is less than or equal to a first temperature threshold, if the temperature of the outdoor coil is less than or equal to the first temperature threshold, reducing the running frequency of the compressor of the air conditioner, and turning to the step S102;
s102, after the air conditioner compressor runs for the first preset time at the current running frequency, judging whether the change rate of the outdoor coil temperature is greater than the preset temperature change rate, if the change rate of the outdoor coil temperature is greater than the preset temperature change rate, reducing the running frequency of the air conditioner compressor, and turning to the step S2.
3. The control method of claim 2, wherein the reducing the operating frequency of the air conditioner compressor comprises:
and reducing the set compression frequency of the current air conditioner by a preset frequency correction value, wherein the frequency correction value is 3-5 Hz.
4. The control method according to claim 2,
in the step S101, if the temperature of the outdoor coil is greater than the first temperature threshold, the air conditioner maintains the current state, and the process returns to the step S101;
in step S102, if the rate of change of the outdoor coil temperature is less than or equal to the predetermined rate of change of the temperature, the air conditioner maintains the current state, and the process returns to step S102.
5. The control method according to claim 2, characterized in that the first temperature threshold is-6 to-4 ℃.
6. The control method according to claim 2, wherein the first predetermined time is 6-9 min.
7. The control method according to claim 1, wherein the step S2 includes:
and after the air conditioner compressor runs at the current running frequency for the second preset time, judging whether the difference value between the outdoor environment temperature and the outdoor coil temperature is greater than the difference value between the preset defrosting temperature difference value and the second temperature threshold, if the difference value between the outdoor environment temperature and the outdoor coil temperature is greater than the difference value between the preset defrosting temperature difference value and the second temperature threshold, increasing the rotating speed of the outdoor fan, and turning to the step S3.
8. The control method of claim 7, wherein increasing the outdoor fan speed comprises:
and increasing the set rotating speed of the current outdoor fan by a preset rotating speed correction value, wherein the rotating speed correction value is 30-50 r/min.
9. The control method of claim 7, wherein in the step S2, if the difference between the outdoor environment temperature and the outdoor coil temperature is less than or equal to the difference between the predetermined defrosting temperature difference and the second temperature threshold, the air conditioner keeps the current status, and the method returns to the step S2.
10. The control method according to claim 7, wherein the second temperature threshold is 2 to 4 ℃.
11. The control method according to claim 7, wherein the second predetermined time is 4 to 6 min.
12. The control method according to claim 1, wherein the step S3 includes:
and after the outdoor fan of the air conditioner runs for a third preset time at the current rotating speed, judging whether the temperature of the indoor coil pipe is greater than a third temperature threshold value, and if the temperature of the indoor coil pipe is less than or equal to the third temperature threshold value, entering a normal defrosting mode.
13. The control method of claim 12, wherein in the step S3, if the indoor coil temperature is greater than the third temperature threshold, the air conditioner maintains the current status, and the method returns to the step S3.
14. The control method according to claim 12, wherein the third temperature threshold has a value in a range of 30-35 ℃.
15. The control method according to claim 12, wherein the third predetermined time is 4 to 6 min.
16. The control method according to claim 1, wherein the step S0 further includes: and operating in the heating mode for a preset time, and enabling the air conditioner to enter a stable operation state.
17. An air conditioner, comprising:
a storage unit for storing executable instructions
One or more processing units executing the control method according to any of claims 1-16 according to the executable instructions.
18. The air conditioner according to claim 17, further comprising:
the detection unit comprises an outdoor coil temperature sensor, an outdoor environment temperature sensor, an indoor coil temperature sensor, an outdoor fan rotating speed sensor and a compressor frequency detection device.
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| CN201911296976.7A CN110940057B (en) | 2019-12-12 | 2019-12-12 | Control method for slowing down defrosting attenuation of air conditioner and air conditioner |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594977A (en) * | 2020-04-08 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Heating control method and air conditioner |
| CN111609522A (en) * | 2020-05-06 | 2020-09-01 | 海信（山东）空调有限公司 | Control method of compressor and air conditioner |
| CN111928425A (en) * | 2020-07-16 | 2020-11-13 | 广东纽恩泰新能源科技发展有限公司 | Defrosting determination method for air source heat pump unit |
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| CN115307273A (en) * | 2022-08-16 | 2022-11-08 | 珠海格力电器股份有限公司 | Defrosting control method and device based on fuzzy algorithm, air conditioner and storage medium |
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| CN111594977A (en) * | 2020-04-08 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Heating control method and air conditioner |
| CN111609522A (en) * | 2020-05-06 | 2020-09-01 | 海信（山东）空调有限公司 | Control method of compressor and air conditioner |
| CN111609522B (en) * | 2020-05-06 | 2021-08-17 | 海信（山东）空调有限公司 | Control method of compressor and air conditioner |
| CN113669850A (en) * | 2020-05-14 | 2021-11-19 | 青岛海尔空调电子有限公司 | Air conditioner and control method thereof |
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| CN113294891A (en) * | 2021-06-18 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, electronic equipment and storage medium |
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| CN113757921A (en) * | 2021-10-15 | 2021-12-07 | 广东科学技术职业学院 | Defrosting control method of variable frequency air conditioner, air conditioner and computer readable storage medium |
| CN113757921B (en) * | 2021-10-15 | 2023-02-24 | 广东科学技术职业学院 | Defrosting control method of variable frequency air conditioner, air conditioner and computer readable storage medium |
| CN113819580A (en) * | 2021-10-27 | 2021-12-21 | 合肥美的暖通设备有限公司 | Frequency adjusting method and device, readable storage medium and air conditioner |
| CN114061033A (en) * | 2021-11-03 | 2022-02-18 | 青岛海尔空调器有限总公司 | Method and device for defrosting air conditioner, air conditioner and storage medium |
| CN114061033B (en) * | 2021-11-03 | 2023-08-18 | 青岛海尔空调器有限总公司 | Method and device for defrosting air conditioner, air conditioner and storage medium |
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| CN114992781A (en) * | 2022-05-31 | 2022-09-02 | 北京小米移动软件有限公司 | Defrosting control method and device for air conditioner, terminal and storage medium |
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