CN112212466A - Control method and control device for chassis heater of air conditioner outdoor unit and air conditioner - Google Patents
Control method and control device for chassis heater of air conditioner outdoor unit and air conditioner Download PDFInfo
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- CN112212466A CN112212466A CN202011133044.3A CN202011133044A CN112212466A CN 112212466 A CN112212466 A CN 112212466A CN 202011133044 A CN202011133044 A CN 202011133044A CN 112212466 A CN112212466 A CN 112212466A
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- air conditioner
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- heater
- outdoor unit
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/80—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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application discloses a control method and a control device for a chassis heater of an air conditioner outdoor unit and an air conditioner, wherein a difference value obtained by subtracting a preset third time length from the accumulated running time length of a compressor of the air conditioner in the last defrosting period is calculated; after the chassis heater is turned off in the last defrosting period and the accumulated running time length of the compressor of the air conditioner exceeds the difference value, judging whether the second outdoor environment temperature T is continuously lower than the second threshold temperature for a fourth time length, turning on the chassis heater and turning off the chassis heater after the fifth time length; according to the control method and the control device for the chassis heater of the air conditioner outdoor unit and the air conditioner, the chassis heater is not controlled to be closed by controlling the outdoor environment temperature to be higher than a certain temperature value, but is controlled to be closed by controlling the outdoor environment temperature to be lower than the certain temperature value; and different running modes of the air conditioner are matched, different opening durations of the chassis heater are designed, and electric energy is saved on the premise of ensuring the deicing effect.
Description
Technical Field
The invention relates to the field of air conditioner control methods, in particular to a control method and a control device for a chassis heater of an air conditioner outdoor unit and an air conditioner.
Background
In northern China and some countries with cold weather, the temperature is low in winter, and a chassis and an outer coil of an outdoor unit of an air conditioner are easy to freeze, so that the heat exchange efficiency of the outdoor unit is low when the air conditioner operates in heating, and the temperature of wind blown out by the indoor unit is not high enough. One way to remove ice is to start the defrosting process, and when the air conditioner heats, the outdoor unit of the air conditioner is an evaporator; when the defrosting process is started, the air conditioner outdoor unit is changed into a condenser, so that the temperature of the air conditioner outdoor unit is increased to achieve the effects of removing ice and frost.
When the air conditioner is in a defrosting process, an air conditioner indoor unit becomes a heat-absorbing condenser, the defrosting process generally does not exceed 10min, and the corresponding defrosting period can reach 40 min. The defrosting cycle comprises a condition judging process and a defrosting process. One common above condition determination process includes: the difference between the temperature of the coil pipe in the air conditioner and the indoor temperature is less than 5 ℃ and is maintained for more than 3 min; whether the compressor is operated for more than 30 min. It can be seen that the start of the defrosting process, in addition to meeting the temperature condition, also meets the requirement that the running time of the compressor reaches the specified time.
In addition to the defrosting process, an electric heating deicing method is also available at present, and a chassis electric heating device is added on a chassis of an air conditioner outdoor unit to deice and defrost. The chassis of the outdoor unit of the air conditioner is generally required to meet the following three conditions when the electric heating is started: 1. when the ambient temperature T is below a certain threshold temperature; 2. operating a heating mode or a defrosting process; 3. the compressor is operated. The control method for opening and closing the chassis of the air conditioner outdoor unit is too simple, extreme conditions of some cold regions are not considered, thick frost is formed on the heat exchanger and the chassis of the outdoor unit before the electric heating is started, the heat exchange effect of the air conditioner is poor, and the time for starting the electric heating is too late. Furthermore, if the outdoor ambient temperature T is always lower than the above-mentioned threshold temperature in the heating mode of the air conditioner, the chassis heater is always operated according to the existing control method, which is a waste of electric energy due to the fact that the freezing process of the chassis and the external coil of the outdoor unit of the air conditioner is at least half an hour in operation.
The chassis of the air conditioner outdoor unit is generally required to meet one of the following three conditions when the electric heating is turned off: 1. when the ambient temperature T is above a certain threshold temperature; 2. stopping the operation of the compressor; 3. the cooling mode is operated. When the air conditioner operates in the heating mode, the temperature of the outdoor unit of the air conditioner is continuously reduced, even is dozens of degrees lower than the outdoor environment temperature, and at the moment, the chassis heater is obviously in danger if the outdoor environment temperature T is higher than the certain threshold temperature to be turned off.
In the prior art, the most core part of the judgment logic for turning on and off the chassis heater is to judge the relation between the outdoor environment temperature T and a certain threshold value, and the judgment logic has strong disadvantages. If the outdoor environment temperature T is always lower than the above threshold value during the whole operation of the air conditioner, the chassis heater is always operated according to the existing control method, which is a waste of electric energy due to the fact that the freezing process of the chassis and the external coil of the outdoor unit of the air conditioner is at least half an hour during the operation. In order to realize the high efficiency of the heating process of the chassis heater, various types of sensors can be added in the air conditioner outdoor unit to assist in controlling the on or off of the chassis heater, but the complexity of the equipment of the air conditioner and the complexity of a control method are increased undoubtedly; in another example, when the air conditioner operates in the heating mode, the temperature of the outdoor unit of the air conditioner is continuously decreased, even lower than the outdoor environment temperature T by more than ten degrees, and at this time, when the outdoor environment temperature T is higher than the certain threshold, turning off the chassis heater may be unfavorable for the chassis to melt ice.
Disclosure of Invention
The invention mainly aims to provide a control method and a control device for a chassis heater of an air conditioner outdoor unit and an air conditioner, and aims to solve the problem of overlarge power consumption when an electric heater of the chassis of the air conditioner outdoor unit fully meets the deicing requirement.
In order to achieve the above object, the present invention provides a method for controlling a chassis heater of an outdoor unit of an air conditioner, wherein when the chassis heater is in a closed state, the method for controlling the chassis heater of the outdoor unit of the air conditioner comprises:
judging whether the air conditioner is in a defrosting process;
if the air conditioner is judged to be in the defrosting process, acquiring a first outdoor environment temperature T, and judging whether the first outdoor environment temperature T is lower than a first threshold temperature continuously for a first time length;
if yes, starting the chassis heater and continuing for a second time length after the defrosting process is finished;
if the air conditioner is judged not to be in the defrosting process, judging whether the air conditioner has undergone the defrosting process before the current time point in the current operation;
if so, acquiring the accumulated running time of the compressor of the air conditioner in the defrosting period to which the last defrosting process belongs;
after the defrosting process in the last defrosting period is finished, calculating a difference value obtained by subtracting a preset third time length from the accumulated running time length of the compressor of the air conditioner in the last defrosting period;
judging whether the accumulated running time length of the compressor of the air conditioner after the chassis heater is closed in the last defrosting period exceeds the difference value;
if yes, acquiring a second outdoor environment temperature T;
judging whether the second outdoor environment temperature T is lower than a second threshold temperature continuously for a fourth time;
if yes, the chassis heater is started, and the chassis heater is closed after the fifth time duration.
Further, the judging whether the air conditioner is in the defrosting process step comprises the following steps:
judging whether the air conditioner is in a heating mode for the first time;
if so, acquiring a third outdoor environment temperature T, and judging whether the third outdoor environment temperature T is lower than a third threshold temperature for a sixth time length;
if yes, the chassis heater is started, and after the seventh time duration, the chassis heater is closed.
Further, the judging whether the air conditioner is in the defrosting process step comprises the following steps:
judging whether the air conditioner is not in a heating mode or a defrosting process;
if yes, acquiring a fourth outdoor environment temperature T every eighth time length, and judging whether the ninth time length of the fourth outdoor environment temperature T is lower than a fourth threshold temperature or not;
if yes, the chassis heater is turned on, and the chassis heater is turned off after the tenth time span is maintained.
Further, the minute value of the second length of time satisfies the following relationship:
the minute value of the second time length ═ (30-a × first outdoor ambient temperature T)
Wherein the size of a is selected within the range of 1-3.
Further, the minute value of the seventh length of time satisfies the following relationship:
the value of the seventh time interval in minutes ═ (30-b X third outdoor ambient temperature T)
Wherein the size of b is selected within the range of 1-3.
Further, the first threshold temperature and the second threshold temperature are both 3 ℃.
Further, the fourth threshold temperature is 1-4 ℃ lower than the first threshold temperature.
Further, the fourth threshold temperature is 1-4 ℃ lower than the second threshold temperature.
The invention relates to a control method of a chassis heater of an air conditioner outdoor unit, which is characterized in that the chassis heater is not controlled to be closed by controlling the outdoor environment temperature to be higher than a certain temperature value, but is controlled to be closed by controlling the outdoor environment temperature to be lower than a certain temperature value; and different running modes of the air conditioner are matched, different opening durations of the chassis heater are designed, and electric energy is saved on the premise of ensuring the deicing effect.
A control device of a chassis heater of an air conditioner outdoor unit adopts the control method of the chassis heater of the air conditioner outdoor unit.
The control device of the chassis heater of the air conditioner outdoor unit, which adopts the control method of the chassis heater of the air conditioner outdoor unit, can save electric energy on the premise of meeting the ice melting requirement of the chassis of the outdoor unit.
An air conditioner comprises the air conditioner outdoor unit chassis heater control device, the control mode of an outdoor unit chassis is flexible, and electric energy is saved.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for controlling a chassis heater of an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating a method for controlling a chassis heater of an outdoor unit of an air conditioner according to a second embodiment of the present invention;
fig. 3 is a flow chart illustrating a method for controlling a chassis heater of an outdoor unit of an air conditioner according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1, in an embodiment of the present invention, a method for controlling a chassis heater of an outdoor unit of an air conditioner includes:
when the chassis heater is in a closed state, the control method of the chassis heater of the air conditioner outdoor unit comprises the following steps:
s1, judging whether the air conditioner is in a defrosting process;
s20, if the air conditioner is judged to be in a defrosting process, acquiring a first outdoor environment temperature T, and judging whether the first outdoor environment temperature T is continuously lower than a first threshold temperature for a first time length;
s21, if yes, starting the chassis heater and continuing to a second time length after the defrosting process is finished;
in the above steps S20-S21, if the air conditioner is in the defrosting process, obtaining a first outdoor environment temperature T, and determining whether the first outdoor environment temperature T is continuously lower than a first threshold temperature for a first time period; the first time length is selected within a range of 5-20s, and the first threshold temperature is selected within a range of 0-6 ℃. And if the first outdoor environment temperature T condition meets the judgment condition, starting the chassis heater, and continuing to a second time length after the defrosting process is finished, wherein the second time length is selected within the range of 0-10 min.
Because the air conditioner outdoor unit is heated more thoroughly in the defrosting process, if the first outdoor environment temperature T is higher, a chassis heater does not need to be started to assist the defrosting process; and if the first outdoor environment temperature T is lower than the first threshold temperature within the first time span, the chassis heater is started to assist in deicing in the defrosting process so as to shorten the duration time of the defrosting process, and on the premise of fully meeting the deicing requirement, the power consumption is reduced.
S30, if the air conditioner is judged not to be in the defrosting process, judging whether the air conditioner has undergone the defrosting process before the current time point in the current operation;
s31, if yes, obtaining the accumulated running time of the compressor of the air conditioner in the defrosting period of the previous defrosting process;
s32, after the defrosting process in the last defrosting cycle is finished, calculating the difference value of the accumulated running time length of the compressor of the air conditioner in the last defrosting cycle minus a preset third time length;
s33, judging whether the accumulated running time length of the compressor of the air conditioner after the chassis heater is turned off in the last defrosting period exceeds the difference value;
s34, if yes, acquiring a second outdoor environment temperature T;
s35, judging whether the second outdoor environment temperature T is lower than a second threshold temperature continuously for a fourth time;
and S36, if yes, turning on the chassis heater, and turning off the chassis heater after the fifth time duration.
When the defrosting process is carried out, the air conditioner indoor unit becomes a condenser absorbing heat and does not heat the indoor space. For the user experience, the shorter the defrosting process duration of the air conditioner is, the better.
And when the defrosting process in the last defrosting period is finished, the deicing is considered to be completely finished. At this time, the difference value of the accumulated running time length of the compressor of the air conditioner in the last defrosting period minus the preset third time length is calculated. When the chassis heater is turned off in the last defrosting period, the accumulated running time length of the compressor of the air conditioner exceeds the difference value, the chassis and the external coil pipe of the air conditioner can be preliminarily considered to be frozen, and whether the second outdoor environment temperature T is continuously lower than a second threshold temperature for a fourth time length is further judged; and if so, turning on the chassis heater and turning off the chassis heater after the fifth time span. By referring to the difference value, the icing condition of the air conditioner chassis and the outer coil pipe is judged in advance, the chassis heater is turned on in advance, the running times and the duration time of the defrosting process can be shortened by setting the steps, and the electric energy consumption is reduced on the premise of fully meeting the deicing requirement. The third time length is selected within 8-20 min. When the accumulated running time of the compressor of the air conditioner does not exceed the difference value after the chassis heater is closed in the last defrosting period, the icing condition of the chassis and the outer coil pipe of the air conditioner is slight, and the chassis heater is in a closed state at the moment, so that the electric energy is saved.
Referring to fig. 2, in one embodiment, the determining whether the air conditioner is in the defrosting process step includes:
s40, judging whether the air conditioner is in a heating mode for the first time;
s41, if yes, acquiring a third outdoor environment temperature T, and judging whether the sixth time length of the third outdoor environment temperature T is lower than a third threshold temperature or not;
and S42, if yes, turning on the chassis heater, and turning off the chassis heater after the seventh time duration.
In the above steps S40-S42, immediately after entering the heating mode for the first time, determining whether the third outdoor environment temperature T is lower than the third threshold temperature for the sixth time period, so as to determine whether the outdoor temperature is too low;
and if the heating mode is entered for the first time, acquiring the third outdoor environment temperature T, and judging whether the sixth time length of the third outdoor environment temperature T is less than a third threshold temperature continuously, wherein the sixth time length is selected within the range of 10-60s, and the third threshold temperature is selected within the range of 0-6 ℃.
And if the environment temperature T outside the third chamber meets the judgment condition, starting the chassis heater, and closing the chassis heater after a seventh time length, wherein the seventh time length is selected within the range of 20-40 min.
In the above steps, in order to deal with the first entering of the heating mode, the chassis heater is turned on for the seventh time period, so that a complete deicing process is performed. In the above steps, the outdoor environment temperature is not used for judging whether the chassis heater is turned off, but the seventh time length is directly preset as the turn-on duration of the chassis heater, so that the difference between the outdoor air conditioner and the outdoor environment temperature is shielded, and the deicing process is thoroughly carried out.
Referring to fig. 3, in one embodiment, the determining whether the air conditioner is in the defrosting process step includes:
s50, judging whether the air conditioner is not in a heating mode or a defrosting process;
s51, if yes, acquiring a fourth outdoor environment temperature T every eighth time interval, and judging whether the fourth outdoor environment temperature T is lower than a fourth threshold temperature for a ninth time interval continuously;
and S52, if yes, turning on the chassis heater, and turning off the chassis heater after maintaining the tenth time length.
If the air conditioner is not in the heating mode or in the defrosting mode in the above steps S50-S52; and acquiring a fourth outdoor environment temperature T every eighth time length, judging whether the fourth outdoor environment temperature T is lower than a fourth threshold temperature for a ninth time length continuously, if so, keeping the chassis heater on for the tenth time length, and then turning off the chassis heater. Wherein the eighth time length is selected within a range of 5-10min, the ninth time length is selected within a range of 10-60s, the fourth threshold temperature is selected within a range of 0-6 ℃, and the tenth time length is selected within a range of 10-30 min.
In the above steps, the chassis heater is not controlled to be turned off when the outdoor environment temperature is higher than a certain temperature value, but is controlled to be turned on when the outdoor environment temperature is lower than the certain temperature value, and the turn-on and turn-off of the chassis heater is controlled without delay by matching with the designed turn-on duration time of the chassis heater. A rule that the outdoor environment temperature is obtained at a time interval is set, and whether a chassis heater is started or not is judged, so that preparation can be made for starting a heating mode of the air conditioner, and electric energy can be saved.
In one embodiment, the minute value of the second length of time satisfies the following relationship:
the minute value of the second time length ═ (30-a × first outdoor ambient temperature T)
Wherein the size of a is selected within the range of 1-3.
The selection of the second time length is calibrated by the first outdoor environment temperature T, so that the method has the advantage of flexible control, and the electric energy is saved while the deicing requirement is met.
In one embodiment, the minute value of the seventh length of time satisfies the following relationship:
the value of the seventh time interval in minutes ═ (30-b X third outdoor ambient temperature T)
Wherein the size of b is selected within the range of 1-3.
The selection of the seventh time length is calibrated by the ambient temperature T outside the third chamber, so that the method has the advantage of flexible control, and saves electric energy while meeting the deicing requirement.
In one embodiment, the first threshold temperature and the second threshold temperature are both 3 ℃.
In one embodiment, the fourth threshold temperature is 1-4 ℃ lower than the first threshold temperature.
Because the air conditioner is not in a heating mode or a defrosting process, the demand for ice melting is low, and the fourth threshold temperature is set to be slightly lower, so that the electric energy waste caused by the excessive opening of the chassis heater is avoided.
In one embodiment, the fourth threshold temperature is 1-4 ℃ lower than the second threshold temperature.
Because the air conditioner is not in a heating mode or a defrosting process, the demand for ice melting is low, and the fourth threshold temperature is set to be slightly lower, so that the electric energy waste caused by the excessive opening of the chassis heater is avoided.
A control device of a chassis heater of an air conditioner outdoor unit adopts the control method of the chassis heater of the air conditioner outdoor unit.
The control device of the chassis heater of the air conditioner outdoor unit, which adopts the control method of the chassis heater of the air conditioner outdoor unit, can save electric energy on the premise of meeting the ice melting requirement of the chassis of the outdoor unit.
An air conditioner comprises the control device for the chassis heater of the outdoor unit of the air conditioner. The air conditioner adopting the control device of the chassis heater of the outdoor unit of the air conditioner has flexible control mode for the chassis of the outdoor unit and saves electric energy.
According to the control method and the control device for the chassis heater of the air conditioner outdoor unit and the air conditioner, the chassis heater is not controlled to be closed by controlling the outdoor environment temperature to be higher than a certain temperature value, but is controlled to be closed by controlling the outdoor environment temperature to be lower than the certain temperature value; and different running modes of the air conditioner are matched, different opening durations of the chassis heater are designed, and electric energy is saved on the premise of ensuring the deicing effect.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method for a chassis heater of an air conditioner outdoor unit is characterized in that when the chassis heater is in a closed state, the control method for the chassis heater of the air conditioner outdoor unit comprises the following steps:
judging whether the air conditioner is in a defrosting process;
if the air conditioner is judged to be in the defrosting process, acquiring a first outdoor environment temperature T, and judging whether the first outdoor environment temperature T is lower than a first threshold temperature continuously for a first time length;
if yes, starting the chassis heater and continuing for a second time length after the defrosting process is finished;
if the air conditioner is judged not to be in the defrosting process, judging whether the air conditioner has undergone the defrosting process before the current time point in the current operation;
if so, acquiring the accumulated running time of the compressor of the air conditioner in the defrosting period to which the last defrosting process belongs;
after the defrosting process in the last defrosting period is finished, calculating a difference value obtained by subtracting a preset third time length from the accumulated running time length of the compressor of the air conditioner in the last defrosting period;
judging whether the accumulated running time length of the compressor of the air conditioner after the chassis heater is closed in the last defrosting period exceeds the difference value;
if yes, acquiring a second outdoor environment temperature T;
judging whether the second outdoor environment temperature T is lower than a second threshold temperature continuously for a fourth time;
if yes, the chassis heater is started, and the chassis heater is closed after the fifth time duration.
2. The method of claim 1, wherein the determining whether the air conditioner is in a defrosting process step comprises:
judging whether the air conditioner is in a heating mode for the first time;
if so, acquiring a third outdoor environment temperature T, and judging whether the third outdoor environment temperature T is lower than a third threshold temperature for a sixth time length;
if yes, the chassis heater is started, and after the seventh time duration, the chassis heater is closed.
3. The method of claim 1, wherein the determining whether the air conditioner is in a defrosting process step comprises:
judging whether the air conditioner is not in a heating mode or a defrosting process;
if yes, acquiring a fourth outdoor environment temperature T every eighth time length, and judging whether the ninth time length of the fourth outdoor environment temperature T is lower than a fourth threshold temperature or not;
if yes, the chassis heater is turned on, and the chassis heater is turned off after the tenth time span is maintained.
4. The outdoor unit chassis heater controlling method of claim 1, wherein the value of the second time period in minutes satisfies the following relation:
the minute value of the second time length ═ (30-a × first outdoor ambient temperature T)
Wherein the size of a is selected within the range of 1-3.
5. The outdoor unit chassis heater control method of claim 2, wherein the value of the seventh time period in minutes satisfies the following relation:
the value of the seventh time interval in minutes ═ (30-b X third outdoor ambient temperature T)
Wherein the size of b is selected within the range of 1-3.
6. The outdoor unit chassis heater control method of claim 1, wherein the first threshold temperature and the second threshold temperature are both 3 ℃.
7. The outdoor unit chassis heater control method of claim 3, wherein the fourth threshold temperature is 1-4 ℃ lower than the first threshold temperature.
8. The outdoor unit chassis heater control method of claim 3, wherein the fourth threshold temperature is 1-4 ℃ lower than the second threshold temperature.
9. An outdoor unit chassis heater control apparatus, characterized in that, the outdoor unit chassis heater control method of any one of claims 1 to 8 is adopted.
10. An air conditioner comprising the apparatus for controlling a base plate heater of an outdoor unit of an air conditioner as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133044.3A CN112212466B (en) | 2020-10-21 | 2020-10-21 | Control method and control device for chassis heater of air conditioner outdoor unit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133044.3A CN112212466B (en) | 2020-10-21 | 2020-10-21 | Control method and control device for chassis heater of air conditioner outdoor unit and air conditioner |
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| CN112212466A true CN112212466A (en) | 2021-01-12 |
| CN112212466B CN112212466B (en) | 2022-03-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375291A (en) * | 2021-06-25 | 2021-09-10 | 宁波奥克斯电气股份有限公司 | Defrosting control method for air conditioner |
| CN114135977A (en) * | 2021-11-22 | 2022-03-04 | 宁波奥克斯电气股份有限公司 | Air conditioner heating control method and device and air conditioner |
| CN114576795A (en) * | 2021-12-28 | 2022-06-03 | 宁波奥克斯电气股份有限公司 | Control method of chassis electric heater and air conditioner |
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| CN114135977A (en) * | 2021-11-22 | 2022-03-04 | 宁波奥克斯电气股份有限公司 | Air conditioner heating control method and device and air conditioner |
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