CN109458699B - Multi-online defrosting method and device, storage medium, computer equipment and air conditioner - Google Patents
Multi-online defrosting method and device, storage medium, computer equipment and air conditioner Download PDFInfo
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- CN109458699B CN109458699B CN201811324345.7A CN201811324345A CN109458699B CN 109458699 B CN109458699 B CN 109458699B CN 201811324345 A CN201811324345 A CN 201811324345A CN 109458699 B CN109458699 B CN 109458699B
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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
- F24F11/65—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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a multi-online defrosting control method. According to the control method, the multi-split air conditioner is judged to meet the defrosting condition, the indoor unit in the unmanned room is controlled to be started and heated for t time, the temperature of the unmanned room is increased to a certain value, and then the indoor unit in the unmanned room is controlled to enter the defrosting mode to operate. The refrigerant in the heat exchanger of the indoor unit in the unmanned room exchanges heat in the unmanned room, and the refrigerant absorbs a large amount of heat rapidly from the unmanned room and is used for defrosting of the outdoor unit, so that the defrosting process is accelerated, the defrosting time is shortened, and the comfort of users is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a multi-online defrosting method and device, computer equipment, a storage medium and an air conditioner.
Background
The multi-split air conditioning unit is in an environment with high humidity and low temperature. The condenser can frost during heating operation, and as time accumulates, the frost layer of the condenser can be thicker and thicker, so that the heat exchange of the condenser is influenced, and the heating effect of the air conditioner is finally influenced. For this reason, air conditioning units all have a defrosting mode, and defrosting is performed when the frost layer is thick.
However, the current multi-split air conditioner system is slow in defrosting, long in defrosting time and poor in using comfort of users.
Disclosure of Invention
Aiming at the problems of slow defrosting, long defrosting time and poor use comfort of users of the existing multi-online system, the invention provides a multi-online defrosting control method capable of accelerating the defrosting process and shortening the defrosting time.
A multiple on-line frost control method, the control method comprising:
judging that the multi-split air conditioner meets defrosting conditions;
controlling the indoor unit in the unmanned room to be started and heating to run for t time;
and controlling the indoor unit in the unmanned room to enter a defrosting mode to operate.
In one embodiment, an included angle between an air deflector and the vertical direction is controlled to be alpha within the heating operation time t of an indoor unit in an unmanned room, and the included angle alpha is determined according to the position of an air outlet.
In one embodiment, for the air conditioner with the air outlet positioned at the upper part of the room, the included angle alpha is greater than or equal to 90 degrees.
In one embodiment, for the air conditioner with the air outlet positioned at the lower part of the room, the included angle α is smaller than or equal to 90 degrees.
In one embodiment, the heating operation time t is a time required to raise the temperature of the unmanned room by 3 ℃ to 5 ℃.
In one embodiment, the step of controlling the indoor unit in an unmanned room to enter into a defrosting mode further includes:
and controlling a fan of the indoor unit in the unmanned room to be started.
In one embodiment, the rotation speed of the fan is controlled to be a middle-gear or high-gear rotation speed.
In one embodiment, the control method further includes:
and after defrosting is finished, controlling the indoor unit in the unmanned room to stop or perform heating operation for a period of time.
A multiple on-line frost control apparatus comprising:
the judging module judges whether the multi-split air conditioner meets defrosting conditions or not;
and the control module controls the indoor unit in the unmanned room to enter into a defrosting mode for operation after the indoor unit in the unmanned room is started and heated for t time according to the judgment result of the judgment module.
A storage medium containing computer executable instructions for performing a defrost control method as in any one of the preceding claims when executed by a computer processor.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the defrosting control method as claimed in any one of the above claims when executing the program.
The multi-split air conditioner adopts the multi-split defrosting control device.
The technical scheme at least has the following technical effects:
according to the multi-online defrosting control method, when the multi-online defrosting condition is judged to be met, the indoor unit in the unmanned room is controlled to be started and heated for t time, so that the temperature of the unmanned room is increased to a certain value, preparation is made for the refrigerant to absorb heat when the indoor unit in the unmanned room enters a defrosting mode, and then the indoor unit in the unmanned room is controlled to enter the defrosting mode to operate. The refrigerant in the heat exchanger of the indoor unit in the unmanned room exchanges heat in the unmanned room, and the refrigerant absorbs a large amount of heat rapidly from the unmanned room and is used for defrosting of the outdoor unit, so that the defrosting process is accelerated, the defrosting time is shortened, and the comfort of users is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a control flow chart of a multi-online defrosting control method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a multi-split air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic flow direction diagram of a refrigerant of a multi-split air conditioning system in a defrosting stage according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating arrangement of an air deflector of an indoor unit located at an upper portion of an unmanned room when a defrosting condition is satisfied in a multi-split air conditioning system according to an embodiment of the present invention, where the schematic view illustrates an included angle between the air deflector and a vertical direction;
fig. 5 is a schematic view illustrating arrangement of an air deflector of an indoor unit located at a lower portion of an unmanned room when a defrosting condition is satisfied in a multi-split air conditioning system according to an embodiment of the present invention, and is used for illustrating an included angle between the air deflector and a vertical direction.
Description of reference numerals:
Gas-liquid separator 220
Four-way valve 230
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be construed as limiting the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a multi-split air conditioning system. The multi-split air conditioning system comprises an indoor unit and an outdoor unit. The indoor units comprise an indoor unit in a manned room and an indoor unit in an unmanned room when the multi-split air conditioning system meets defrosting conditions. The indoor unit in the room without a person may be an indoor unit in a bedroom without a person or an indoor unit in a non-bedroom without a person when the multi-split air conditioning system satisfies the defrosting condition. The indoor unit in the living room may be an indoor unit in a living room or an indoor unit in a non-living room when the multi-split system meets the defrosting condition. When the multi-split air conditioning system meets the defrosting condition, the indoor unit in the manned room and the indoor unit in the unmanned room can be judged according to the time interval and the position of the indoor units, and certainly, the judgment can also be carried out according to other parameters. Optionally, the indoor unit in the unmanned room may be configured to be in a sleep time period 00: 00-7:00, and is in the indoor units of living rooms, dining rooms, kitchens, study rooms and the like, and the indoor unit in the unmanned room is in a power-off state. The indoor unit in the room with people can be in a sleep time period of 00: 00-7:00, and is located in an indoor unit of a bedroom or the like, and the indoor unit located in a room with a person is operated in a heating mode.
Referring to fig. 2 and 3, optionally, the multi-split air conditioner according to an embodiment of the present invention includes three indoor units 100 and an outdoor unit 200. The three indoor units 100 are disposed in parallel and share one outdoor unit 200. When the multi-split air conditioning system meets the defrosting condition, at least one of the three indoor units 100 is an indoor unit in an unmanned room, and the rest are indoor units in an occupied room. Each of the indoor units includes an electronic expansion valve 110, an indoor fan 120, and an indoor heat exchanger 130. The outdoor unit 200 includes a compressor 210, a gas-liquid separator 220, a four-way valve 230, an outdoor heat exchanger 240, and an outdoor fan 250. The multi-split air conditioner comprises a cooling operation mode and a heating operation mode, when the multi-split air conditioner operates in the cooling mode, the refrigerant flows as indicated by a cooling arrow in fig. 2 and as indicated by a cooling arrow in fig. 3, high-temperature and high-pressure refrigerant gas discharged from an exhaust port of the compressor 210 enters the outdoor heat exchanger 240 (the heat exchanger at this time is a condenser) through the four-way valve 230 to exchange heat, low-temperature liquid refrigerant after heat exchange enters the indoor unit 100 through the electronic expansion valve 110, then exchanges heat in the indoor heat exchanger 130 (the heat exchanger at this time is an evaporator) to be changed into gaseous refrigerant after heat exchange, and the gaseous refrigerant enters the air inlet of the compressor 210 through the four-way valve 230 and the gas-liquid separator 220 to. When the multi-split air conditioner operates in the heating mode, the refrigerant flows as indicated by the heating arrows in fig. 2, and the high-temperature and high-pressure refrigerant gas discharged from the discharge port of the compressor 210 enters the indoor unit 100 through the four-way valve 230, exchanges heat in the indoor heat exchanger 130 (which is a condenser at this time) to become a liquid refrigerant, enters the outdoor unit 200 through the electronic expansion valve 110, exchanges heat in the outdoor heat exchanger 240 (which is an evaporator at this time), enters the intake port of the compressor 210 through the four-way valve 230 and the gas-liquid separator 220, and completes a cycle.
As shown in fig. 1, based on the multi-split air conditioning system, the present invention provides a multi-split defrosting control method, which includes the following steps:
judging that the multi-split air conditioner meets defrosting conditions;
controlling the indoor units in the unmanned room to be started and heating to run for t time, wherein one or more indoor units in the unmanned room are started at the moment, and all the indoor units in the unmanned room are started at the moment in order to accelerate the defrosting process;
and controlling the indoor unit in the unmanned room to enter a defrosting mode to operate.
And when the multi-split air conditioner is judged to meet the defrosting condition, the indoor unit in the unmanned room is in a shutdown state. The indoor unit located in the manned room is operated in a heating mode.
Mature multi-split air conditioning systems have own defrosting conditions, and are generally obtained by comprehensively judging the temperature detected by a defrosting bulb and the ambient temperature.
When a general multi-split air conditioner enters a defrosting mode, an electronic expansion valve of an indoor unit is opened, and a fan is stopped, namely, the electronic expansion valves of the indoor unit in an unmanned room and the indoor unit in a manned room are both opened, and the fan is stopped. The fan of the outdoor unit is also stopped.
The technical scheme has the following technical effects:
the multi-online defrosting control method judges that the multi-online defrosting control method meets defrosting conditions, controls the indoor unit in the unmanned room to be started and to be heated for t time, enables the temperature of the unmanned room to rise to a certain value, prepares for heat absorption of a refrigerant when the indoor unit of the unmanned room enters a defrosting mode, and then controls the indoor unit in the unmanned room to enter the defrosting mode to operate. The refrigerant in the heat exchanger of the indoor unit in the unmanned room exchanges heat in the unmanned room, and the refrigerant absorbs a large amount of heat rapidly from the unmanned room and is used for defrosting of the outdoor unit, so that the defrosting process is accelerated, the defrosting time is shortened, and the comfort of users is improved.
The heating operation time t is mainly determined according to the temperature rise value of the unmanned room. Optionally, the heating operation time t is a time required to raise the temperature of the unmanned room by 3 ℃ to 5 ℃. Of course, the heating operation time t may be set by the user.
In one embodiment, an included angle between an air deflector and the vertical direction is controlled to be alpha within the heating operation time t of an indoor unit in an unmanned room, and the included angle alpha is determined according to the position of an air outlet. As shown in fig. 4, for the air conditioner with the air outlet at the upper part of the room, such as a wall-mounted air conditioner, a ducted air conditioner, etc., with the air outlet at the upper part of the room, the air deflector is horizontally arranged or is inclined upwards. The included angle alpha between the air deflector and the vertical direction is larger than or equal to 90 degrees, namely the included angle between the air deflector and the horizontal direction is larger than or equal to 0 degree. Optionally, the air deflector is horizontally arranged or is arranged in an upward inclined manner relative to the horizontal direction, and an included angle between the air deflector and the horizontal direction is in a range of 0 degree to 30 degrees, that is, an included angle α between the air deflector and the vertical direction is in a range of 90 degrees to 120 degrees. The air deflector is horizontally arranged or is upwards inclined relative to the horizontal direction, the purpose is to gather heat on the upper part of a room, when an outdoor unit carries out defrosting, the refrigerant in the heat exchanger of the indoor unit of an unmanned room can directly absorb the heat from the upper part of the room, so that the defrosting time is shortened, and the defrosting efficiency is improved.
As shown in fig. 5, for the air conditioner with the air outlet at the lower part of the room, such as an on-hook air conditioner, a cabinet air conditioner, etc., with the air outlet at the lower part of the room, the air deflector is arranged horizontally or inclined downwards. Namely, the air deflector is horizontally arranged or is obliquely arranged downwards relative to the horizontal direction, and the included angle alpha between the air deflector and the vertical direction is less than or equal to 90 degrees. Optionally, the air deflector is arranged in a downward inclination manner, and the included angle between the air deflector and the horizontal direction ranges from 0 degree to 30 degrees, that is, the included angle α between the air deflector and the vertical direction ranges from 60 degrees to 90 degrees. The air deflector is horizontally arranged or is obliquely arranged downwards relative to the horizontal direction, so that heat is discharged to a space, close to the bottom plate, of a room, the heat stays at the lower part of the room, and when an external machine conveniently defrosts, a refrigerant in the heat exchanger of the indoor machine of the unmanned room directly absorbs the heat from the space, close to the bottom plate, of the room, the defrosting time is shortened, and the defrosting efficiency is improved. Optionally, when the indoor unit in the unmanned room operates in a defrosting mode, controlling a fan of the indoor unit in the unmanned room to be turned on.
Optionally, when the indoor unit in the unmanned room operates in a defrosting mode, the fan is started, and indoor air convection can be accelerated by starting the fan, so that heat exchange between the heat exchanger of the indoor unit in the unmanned room and the ambient environment is accelerated. And further, controlling the rotating speed of the fan to be a middle-grade or high-grade rotating speed. At the moment, the indoor unit in the unmanned room operates in a heating mode, the fan rotates at a middle-grade or high-grade rotating speed to promote forced convection, so that convection ventilation between the indoor unit in the unmanned room and the environment is accelerated, heat exchange between the heat exchanger of the indoor unit in the unmanned room and the surrounding environment is accelerated, a refrigerant in the heat exchanger of the indoor unit in the unmanned room rapidly absorbs heat from the unmanned room in which the indoor unit is located, the heat is used for defrosting of the outdoor unit, the defrosting process is accelerated, and defrosting time is shortened.
With continued reference to fig. 1, in one embodiment, the control method further includes:
and after defrosting is finished, controlling the indoor unit in the unmanned room to stop or to perform heating operation for a period of time. And if the environment of the indoor unit in the unmanned room is not in need of temperature, the indoor unit in the unmanned room is closed, and if the environment of the indoor unit in the unmanned room is in need of temperature, the indoor unit in the unmanned room is heated and operated for a period of time, so that the temperature of the unmanned room is restored to the original state, namely the temperature of the unmanned room is the same as the original temperature when the multi-split system meets the defrosting condition.
A multiple on-line frost control apparatus comprising:
the judging module judges whether the multi-split air conditioner meets defrosting conditions or not;
and the control module controls the indoor unit in the unmanned room to enter into a defrosting mode for operation after the indoor unit in the unmanned room is started and heated for t time according to the judgment result of the judgment module.
For specific definition of the multiple on-line frost control device, reference may be made to the above definition of the multiple on-line frost control method, and details are not described here. The modules of the multi-online frost control device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. The multi-online defrosting control device adopts the multi-online defrosting control method. Since the multiple on-line frost control device adopts the multiple on-line frost control method of the above embodiment, please refer to the above embodiment for the beneficial effects of the multiple on-line frost control device brought by the multiple on-line frost control method.
A storage medium containing computer executable instructions, having stored thereon a computer program which, when executed by a processor, performs the steps of:
judging that the multi-split air conditioner meets defrosting conditions;
controlling the indoor unit in the unmanned room to be started and heating to run for t time;
and controlling the indoor unit in the unmanned room to enter a defrosting mode to operate.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
judging that the multi-split air conditioner meets defrosting conditions;
controlling the indoor unit in the unmanned room to be started and heating to run for t time;
and controlling the indoor unit in the unmanned room to enter a defrosting mode to operate.
The computer equipment and the computer storage medium judge that the multi-split air conditioner meets the defrosting condition, control the indoor unit in the unmanned room to be started and heated for t time to enable the temperature of the unmanned room to rise to a certain value, and then control the indoor unit in the unmanned room to enter the defrosting mode to operate. The refrigerant in the heat exchanger of the indoor unit in the unmanned room exchanges heat in the unmanned room, and the refrigerant absorbs a large amount of heat rapidly from the unmanned room and is used for defrosting of the outdoor unit, so that the defrosting process is accelerated, the defrosting time is shortened, and the comfort of users is improved.
The multi-split air conditioner adopts the multi-split defrosting control device.
Since the multi-split air conditioner employs the multi-split defrosting control device of the above embodiment, please refer to the above embodiment for the beneficial effects of the multi-split air conditioner brought by the multi-split defrosting control device.
The multi-online defrosting control method judges that the multi-online defrosting meets defrosting conditions, controls the indoor unit in the unmanned room to be started and to perform heating operation for t time, enables the temperature of the unmanned room to rise to a certain value, and then controls the indoor unit in the unmanned room to enter a defrosting mode to operate. The refrigerant in the heat exchanger of the indoor unit in the unmanned room exchanges heat in the unmanned room, and the refrigerant absorbs a large amount of heat rapidly from the unmanned room and is used for defrosting of the outdoor unit, so that the defrosting process is accelerated, the defrosting time is shortened, and the comfort of users is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A multi-online defrosting control method is characterized by comprising the following steps:
judging that the multi-split air conditioner meets defrosting conditions;
controlling the indoor unit in the unmanned room to be started and to perform heating operation for t time, and preparing for the refrigerant heat absorption when the indoor unit in the unmanned room enters a defrosting mode;
controlling the indoor unit in the unmanned room to enter a defrosting mode for operation;
controlling an included angle between an air deflector and the vertical direction to be alpha within the heating operation time t of an indoor unit in an unmanned room, wherein the included angle alpha is determined according to the position of an air outlet;
for the air conditioner with the air outlet positioned at the upper part of the room, the included angle alpha is more than or equal to 90 degrees;
for the air conditioner with the air outlet positioned at the lower part of the room, the included angle alpha is smaller than or equal to 90 degrees.
2. The multi-connected defrosting control method according to claim 1, wherein the heating operation time t is a time required to raise the temperature of the unmanned room by 3 ℃ to 5 ℃.
3. The multi-on-line frost control method according to claim 1, wherein the controlling the indoor unit in an unmanned room to enter a defrosting mode operation further comprises:
and controlling a fan of the indoor unit in the unmanned room to be started.
4. The multi-connected defrosting control method according to claim 3, wherein the rotation speed of the fan is controlled to be a middle-gear rotation speed.
5. The multi-connected defrosting control method according to claim 3, wherein the rotation speed of the fan is controlled to be a high-grade rotation speed.
6. The multi-connected defrosting control method according to claim 1, further comprising:
and after defrosting is finished, controlling the indoor unit in the unmanned room to stop or perform heating operation for a period of time.
7. A multiple on-line frost control apparatus, comprising:
the judging module judges whether the multi-split air conditioner meets defrosting conditions or not;
the control module controls the indoor unit in the unmanned room to start and heat for t time according to the judgment result of the judgment module, and then controls the indoor unit in the unmanned room to enter a defrosting mode to operate; controlling an included angle between an air deflector and the vertical direction to be alpha within the heating operation time t of an indoor unit in an unmanned room, wherein the included angle alpha is determined according to the position of an air outlet; for the air conditioner with the air outlet positioned at the upper part of the room, the included angle alpha is more than or equal to 90 degrees; for the air conditioner with the air outlet positioned at the lower part of the room, the included angle alpha is smaller than or equal to 90 degrees.
8. A storage medium containing computer-executable instructions for performing the defrost control method of any one of claims 1-6 when executed by a computer processor.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the defrost control method of any one of claims 1 to 6 when executing the program.
10. A multi-split air conditioner characterized in that the multi-split air conditioner employs the multi-split frost control apparatus of claim 7.
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| US11927356B2 (en) | 2019-04-18 | 2024-03-12 | Mitsubishi Electric Corporation | Controller of air conditioning apparatus, outdoor unit, branch unit, heat source unit, and air conditioning apparatus |
| CN110567100B (en) * | 2019-09-04 | 2021-06-04 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner defrosting control method and multi-split air conditioner |
| CN112665116B (en) * | 2019-10-16 | 2022-04-12 | 广东美的制冷设备有限公司 | Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium |
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| JP2014173816A (en) * | 2013-03-12 | 2014-09-22 | Mitsubishi Electric Corp | Multi-type air conditioner |
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| CN104266423B (en) * | 2014-09-11 | 2017-05-24 | 珠海格力电器股份有限公司 | Defrosting method for air conditioner multi-online system |
| CN104819542B (en) * | 2015-03-27 | 2017-12-29 | 广东美的制冷设备有限公司 | Defrosting control method, device and the air conditioner of air conditioner |
| CN105486164A (en) * | 2016-02-02 | 2016-04-13 | 广东美的制冷设备有限公司 | Cleaning control method for indoor heat exchanger of air conditioner and air conditioner |
| CN105910175B (en) * | 2016-04-29 | 2019-03-26 | 珠海格力电器股份有限公司 | The control method of air conditioner indoor unit, air-conditioner set and air-conditioner set |
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