CN108195047B - Noise control method and controller of multi-connected air conditioning system - Google Patents
Noise control method and controller of multi-connected air conditioning system Download PDFInfo
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- CN108195047B CN108195047B CN201711251211.2A CN201711251211A CN108195047B CN 108195047 B CN108195047 B CN 108195047B CN 201711251211 A CN201711251211 A CN 201711251211A CN 108195047 B CN108195047 B CN 108195047B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 20
- 208000013738 Sleep Initiation and Maintenance disease Diseases 0.000 description 3
- 206010022437 insomnia Diseases 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010062519 Poor quality sleep Diseases 0.000 description 1
- 208000032140 Sleepiness Diseases 0.000 description 1
- 206010041349 Somnolence Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 230000037321 sleepiness Effects 0.000 description 1
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Classifications
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
- F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a noise control method and a controller of a multi-connected air conditioning system. The invention aims to solve the problems of poor effect and high cost in the prior technical scheme of replacing the large-caliber electronic expansion valve to solve the standby noise of the heating indoor unit. The noise control method of the multi-connected air conditioning system comprises the following steps: when the operation mode of the multi-connected air conditioning system is a heating mode, acquiring the operation time of the heating mode; and when the running time is greater than the time threshold, controlling and setting the expansion valve corresponding to the indoor unit of the room in the standby state to be closed. By controlling the expansion valve corresponding to the indoor unit of the set room to be completely closed, the invention can control the noise of the set room, completely eliminate the noise generated by the indoor unit of the room and greatly improve the user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a noise control method and a controller of a multi-connected air conditioning system.
Background
In recent years, the multi-connected air conditioning system has become a preferred solution for air conditioning in collective places such as office buildings, shopping malls, apartments and the like due to the advantages of convenient installation, small influence on the appearance of buildings, remarkable cooling/heating effect and the like. When the multi-split air conditioning system operates in a heating mode, in order to avoid the accumulation of refrigerant, the electronic expansion valve of the heating indoor unit which is not normally turned on maintains a certain opening degree (i.e., a reference maintaining opening degree) so that the refrigerant participates in the circulation of the system. However, when the refrigerant flows, the fan of the heating indoor unit does not operate, so that the flowing sound of the refrigerant is amplified, and further noise is generated, especially in a room which needs to be quiet, such as a bedroom or a room of a special crowd (such as an insomniac or a person who sleeps lightly), rest of a user is affected, and the use experience is not good.
In order to solve the noise problem when the heating indoor unit is in standby state, the scheme that an electronic expansion valve with a larger caliber replaces an expansion valve with a smaller caliber in the original air-conditioning indoor unit is mostly adopted in the prior art to solve the problem. The proposal reduces the flow velocity of the refrigerant by increasing the aperture of the expansion valve and changing the flow channel of the expansion valve, thereby reducing the noise generated by the flow of the refrigerant. Although the noise problem caused by the flowing of the refrigerant is solved to a certain extent in the mode, certain defects are also avoided. First, the flow sound of the refrigerant can only be reduced by enlarging the aperture of the electronic expansion valve and changing the flow passage, and the flow sound cannot be eliminated fundamentally, so that the noise still exists. Secondly, the cost of the whole air conditioning system is increased to a certain extent by adopting the large-diameter electronic expansion valve, and for a multi-connected air conditioning system, the cost of the multi-connected air conditioning system can be greatly increased by replacing the electronic expansion valves of a plurality of indoor units at the same time. That is to say, the problem that the existing technical scheme for solving the standby noise of the heating indoor unit by replacing the large-caliber electronic expansion valve has poor effect and high cost.
Accordingly, there is a need in the art for a new noise control method for a multi-connected air conditioning system to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problems of poor effect and high cost in the existing technical scheme of solving the standby noise of the heating indoor unit by replacing the large-diameter electronic expansion valve, the invention provides a noise control method of a multi-connected air conditioning system, wherein the multi-connected air conditioning system comprises an outdoor unit and a plurality of indoor units, each indoor unit is provided with an expansion valve, and the noise control method comprises the following steps:
when the operation mode of the multi-connected air conditioning system is a heating mode, acquiring the operation time of the heating mode;
and when the running time is greater than the time threshold, controlling to close an expansion valve corresponding to the indoor unit of which the set room is in the standby state.
In a preferred embodiment of the noise control method for a multi-split air conditioning system, after the step of controlling to close an expansion valve corresponding to an indoor unit in a room standby state when the operation time is greater than a time threshold, the noise control method further includes:
the opening degree of an expansion valve corresponding to an indoor unit in a standby state of an unset room is controlled to be increased by a first set opening degree.
In a preferred embodiment of the noise control method for a multi-type air conditioning system, the step of "controlling the opening degree of an expansion valve corresponding to an indoor unit in a standby state of an unset room to be increased by a first set opening degree" further includes:
calculating the first set opening degree based on the original opening degree of an expansion valve corresponding to the indoor unit of the set room and the number of the indoor units of the unset room;
and controlling the opening degree of an expansion valve corresponding to an indoor unit in a standby state of the unset room to increase by the first set opening degree.
In a preferred embodiment of the noise control method for a multi-type air conditioning system, the step of "calculating the first set opening degree based on the original opening degree of the expansion valve corresponding to the indoor unit of the set room and the number of the indoor units of the unset room" further includes:
calculating the sum of the original opening degrees of expansion valves corresponding to the indoor units of the set rooms;
calculating the number of indoor units of the unset room;
calculating the ratio of the sum of the opening degrees to the number;
and taking the ratio as the first set opening degree.
In a preferred embodiment of the noise control method for a multi-type air conditioning system, before the step of "controlling the closing of the expansion valve corresponding to the indoor unit in which the set room is in the standby state", the noise control method further includes:
and determining the set room based on the address code of the indoor unit.
In a preferred embodiment of the noise control method for a multi-split air conditioning system, the step of "determining the set room based on an address code of an indoor unit" further includes:
acquiring address codes of all indoor units in a standby state;
acquiring the state of the address code;
and when the address code is in a marked state, determining the room where the indoor unit corresponding to the address code is located as a set room.
In a preferred embodiment of the noise control method for a multi-split air conditioning system, when the indoor unit in the standby state receives a marking command, the address code of the indoor unit is changed to a marked state.
In a preferred technical solution of the noise control method of the multi-split air conditioning system, the marking instruction is a mute period setting instruction.
The invention also provides a controller of the multi-connected air conditioning system, and the controller can execute the noise control method in any scheme.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the noise control method of the multi-connected air conditioning system includes the following steps: when the operation mode of the multi-connected air conditioning system is a heating mode, acquiring the operation time of the heating mode; when the running time is greater than the time threshold, controlling to close an expansion valve corresponding to an indoor unit of a set room in a standby state; and controlling the opening degree of an expansion valve corresponding to the indoor unit in the standby state of the unset room to increase by a first set opening degree. By controlling the control mode of closing the expansion valve corresponding to the indoor unit of the set room in the standby state in the heating mode, the noise control method can control the noise of the set room, particularly when the set room is a room for special people such as insomniacs or light sleepiness, completely eliminate the noise generated by the indoor unit of the room, and greatly improve the user experience. The control mode of controlling the opening degree of the expansion valve corresponding to the indoor unit of which the set room is not in the standby state to increase the first set opening degree can increase the circulation flow of the refrigerant, so that most of the refrigerant smoothly flows back, the noise of the indoor unit is reduced, and the problem of refrigerant loss is avoided.
Drawings
The noise control method and the controller of the multi-connected air conditioning system according to the present invention will be described with reference to the accompanying drawings. In the drawings:
FIG. 1 is a schematic flow chart of a noise control method of a multi-connected air conditioning system according to the present invention;
FIG. 2 is a flowchart illustrating a method for controlling an opening degree of an expansion valve corresponding to an indoor unit in a non-set room in a standby state to increase by a first set opening degree according to the present invention;
fig. 3 is a flowchart illustrating a method for calculating a first set opening according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, for those skilled in the art, the multi-connected air conditioning system includes an outdoor unit and a plurality of indoor units connected in series or in parallel with the outdoor unit, components such as an outdoor unit heat exchanger, a compressor, an outdoor unit electronic expansion valve, and a control chip are disposed in the outdoor unit, components such as an indoor unit heat exchanger, an indoor unit electronic expansion valve, and the like are disposed in the indoor unit, and a connection relationship between the above components, a cooling and heating principle of the air conditioning system, and the like are known, and will not be described in detail herein.
In order to solve the problems of poor effect and high cost existing in the technical scheme of solving the standby noise of the heating indoor unit by replacing a large-diameter electronic expansion valve in the prior art, the invention provides a noise control method of a multi-connected air conditioning system.
Referring to fig. 1, fig. 1 is a flow chart illustrating a noise control method of a multi-split air conditioning system according to the present invention. As shown in fig. 1, the noise control method of the multi-connected air conditioning system of the present invention mainly includes the following steps:
s100, when the operation mode of the multi-connected air conditioning system is a heating mode, acquiring the operation time of the heating mode; if the operation modes of the multi-connected air-conditioning system comprise a refrigeration mode, a heating mode, an air supply mode and a dehumidification mode, the multi-connected air-conditioning system acquires the current operation mode through a control chip of the outdoor unit, and the control chip acquires the operation time of the heating mode of the air conditioner through a timer in the air conditioner;
s200, when the running time is greater than a time threshold, controlling and setting the expansion valve corresponding to the indoor unit of the room in a standby state to be closed; for example, the time threshold is 3min, and the room is set as the room of the insomnia patient. When the operation time of the heating mode is more than 3min, the heating operation of the air conditioner reaches a stable state, and then an expansion valve corresponding to the indoor unit of the room in which the insomnia patient is positioned in the indoor unit in the standby state is completely closed, so that the noise generated by the flow of the refrigerant in the indoor unit of the room is completely eliminated; of course, the time threshold and the setting of the set room are not all the same and can be adjusted by the person skilled in the art. If the time threshold value can be 4min, 5min and the like, the heating operation can be stable as long as the multi-connected air conditioning system operates for the time; for example, the setting room may be other rooms requiring special silence, such as a recording room or other rooms sensitive to noise.
S300, controlling the opening degree of an expansion valve corresponding to an indoor unit in a standby state of an unset room to increase by a first set opening degree; if the first set opening degree is 20P, after the expansion valve corresponding to the indoor unit of the set room is completely closed, the opening degree of the expansion valve corresponding to the indoor unit of the unset room is controlled to be increased by 20P so as to increase the flow rate of the refrigerant, ensure the refrigerant circulation of the air conditioning system, effectively avoid the accumulation of the refrigerant in the indoor unit of the set room and reduce the noise.
As can be seen from the above description, in the heating mode, by controlling the expansion valve corresponding to the indoor unit in the standby state of the set room to be completely closed, and controlling the opening degree of the expansion valve corresponding to the indoor unit in the standby state of the unset room to be increased by the first set opening degree, the noise control method of the present invention can effectively eliminate the noise generated by the flow of the refrigerant in the indoor unit in the set room, ensure the smooth backflow of the refrigerant, reduce the noise of the indoor unit in the unset room, and improve the user experience.
In a preferred embodiment, before step S200, the noise control method further includes: and determining a set room based on the address code of the indoor unit. It should be explained that the address code of the indoor unit is a string of digital codes unique to each indoor unit, which can be stored on the control chip of each indoor unit and can be obtained by the control chip of the outdoor unit, or can be directly stored on the control chip of the outdoor unit and called by the control chip.
In a possible embodiment, the step of determining the set room based on the address code of the indoor unit may further include:
acquiring address codes of all indoor units in a standby state, such as calling the address codes of the indoor units from the control chip of the outdoor unit;
acquiring the state of the address code; states such as address encoding may include marked states and unmarked states;
and when the address code is in a marked state, determining the room where the indoor unit corresponding to the address code is located as a set room. If the indoor unit in the standby state receives the marking instruction, the control chip of the outdoor unit marks the address code corresponding to the indoor unit in the plurality of address codes stored by the control chip of the outdoor unit, and determines the room as a set room; the marking instruction can be a mute time interval instruction actively set by a user, namely, the user sets a specified time interval to be the mute time interval by using a mute time interval function on the air conditioner controller, so that the indoor unit does not generate noise in the time interval. Of course, the flag command is not limited thereto, and any command similar to the silent period command function falls within the scope of the flag command.
The set room is determined through the address coding of the indoor unit, and then the setting mode that the expansion valve corresponding to the indoor unit of the set room is completely closed is controlled during noise control.
Referring to fig. 2, fig. 2 is a flow chart illustrating a method for controlling an opening degree of an expansion valve corresponding to an indoor unit in a set room in a standby state to be increased by a first set opening degree according to the present invention.
As shown in fig. 2, in a possible implementation, step S300 may further include:
s310, calculating a first set opening degree based on the original opening degree of an expansion valve corresponding to the indoor unit of the set room and the number of the indoor units of the unset room; and if the original opening degree of the expansion valve is the opening degree of the expansion valve corresponding to the indoor unit before the user sets the mute time interval.
S320, the opening degree of the expansion valve corresponding to the indoor unit in the standby state in the unset room is controlled to increase by the first set opening degree, and after the first set opening degree is calculated, the opening degrees of the expansion valves corresponding to the indoor units in the unset room are controlled to increase by the first set opening degree.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for calculating a first set opening according to the present invention.
As shown in fig. 3, in a possible implementation, step S310 may further include:
s311, calculating the sum of the original opening degrees of the expansion valves corresponding to the indoor units of the set rooms, and if the number of the set rooms is two and the original opening degrees of the expansion valves corresponding to the indoor units of the two set rooms are both 32P, calculating the sum of the original opening degrees of the expansion valves corresponding to the two indoor units to be 64P;
s312, calculating the number of the indoor units in the unset room, for example, calculating the number of the unmarked address codes in the indoor units in the standby state stored by the control chip of the outdoor unit to obtain the number of the indoor units in the unset room;
and S313, calculating the ratio of the sum of the opening degrees to the number of the indoor units, taking the ratio as a first set opening degree, calculating the ratio as 16P when the sum of the opening degrees is 64P and the number of the indoor units in the unset room is 4, taking the ratio as the first set opening degree, and controlling the opening degree of the expansion valve corresponding to the indoor unit in the unset room to be increased by 16P.
The control flow of the noise control method of the present invention is explained below as a possible example.
If the multi-connected air conditioning system comprises 1 outdoor unit and 4 indoor units, wherein the multi-connected air conditioning system comprises 1 living room indoor unit and 3 bedroom indoor units, and the reference reserved opening degrees of the expansion valves corresponding to the 4 indoor units in the normal standby state are all 32P. In one possible case, the room indoor unit is in normal heating operation, and 3 bedroom indoor units are in standby state, wherein one bedroom indoor unit is set with a mute time period by the user. In the silent period, the control chip of the outdoor unit controls the expansion valve corresponding to the bedroom indoor unit in the silent period to be closed so as to eliminate the noise possibly generated by the bedroom indoor unit; and the opening degrees of the expansion valves corresponding to the other two bedroom indoor units are controlled to be increased by 32P/2 to 16P respectively so as to receive more refrigerants, improve the return flow of the refrigerants, reduce the noise generated by the bedroom indoor units and avoid the phenomenon of refrigerant loss of an air conditioning system.
The invention also provides a controller of the multi-connected air conditioning system, and the controller can execute the noise control method. Such a controller may be physically one (such as the aforementioned control chip) provided in the outdoor unit, may be one for each indoor unit, may be a controller dedicated to performing the method of the present invention, or may be one functional module or functional unit of a general controller.
In summary, according to the noise control method, when the heating indoor unit is in standby, the expansion valve corresponding to the indoor unit of the set room in the standby indoor unit can be controlled to be completely closed, so that the noise control is performed for the set room, particularly when the set room is a room of a special crowd, such as a room with insomnia or light sleep, and the noise generated by the indoor unit of the room is completely eliminated. In addition, the original structure of the air conditioning system is not required to be changed in the adjusting process, and the cost of the whole machine is saved. That is to say, through the control method, the problems of low control precision and high cost in the technical scheme of solving the standby noise of the heating indoor unit by replacing the large-caliber electronic expansion valve in the prior art are solved, and the user experience is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. A noise control method of a multi-connected air conditioning system, the multi-connected air conditioning system comprises an outdoor unit and a plurality of indoor units, each indoor unit is provided with an expansion valve, and the noise control method is characterized by comprising the following steps:
when the operation mode of the multi-connected air conditioning system is a heating mode, acquiring the operation time of the heating mode;
when the running time is greater than the time threshold, controlling to close an expansion valve corresponding to an indoor unit of a set room in a standby state;
after the step of controlling to set the expansion valve corresponding to the indoor unit in the standby state to be closed when the operation time is greater than the time threshold, the noise control method further includes:
the opening degree of an expansion valve corresponding to an indoor unit in a standby state of an unset room is controlled to be increased by a first set opening degree.
2. The noise control method of a multi-type air conditioning system according to claim 1, wherein the step of controlling the opening degree of an expansion valve corresponding to an indoor unit in a standby state of an unset room to be increased by a first set opening degree further comprises:
calculating the first set opening degree based on the original opening degree of an expansion valve corresponding to the indoor unit of the set room and the number of the indoor units of the unset room;
and controlling the opening degree of an expansion valve corresponding to an indoor unit in a standby state of the unset room to increase by the first set opening degree.
3. The noise control method of claim 2, wherein the calculating the first set opening degree based on the original opening degree of the expansion valve corresponding to the indoor unit of the set room and the number of the indoor units of the unset room further comprises:
calculating the sum of the original opening degrees of expansion valves corresponding to the indoor units of the set rooms;
calculating the number of indoor units of the unset room;
calculating the ratio of the sum of the opening degrees to the number;
and taking the ratio as the first set opening degree.
4. The noise control method of a multi-type air conditioning system according to any one of claims 1 to 3, wherein the noise control method further comprises, before the step of controlling to close an expansion valve corresponding to an indoor unit in which a set room is in a standby state
And determining the set room based on the address code of the indoor unit.
5. The noise control method of the multi-type air conditioning system as claimed in claim 4, wherein the step of determining the set room based on an address code of an indoor unit further comprises:
acquiring address codes of all indoor units in a standby state;
acquiring the state of the address code;
and when the address code is in a marked state, determining the room where the indoor unit corresponding to the address code is located as a set room.
6. The noise control method of the multi-type air conditioning system according to claim 5, wherein when the indoor unit in the standby state receives the marking command, the address code of the indoor unit is changed to the marked state.
7. The method of claim 6, wherein the flag command is a mute period setting command.
8. A controller of a multi-connected air conditioning system, characterized in that the controller is capable of performing the noise control method of any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251211.2A CN108195047B (en) | 2017-12-01 | 2017-12-01 | Noise control method and controller of multi-connected air conditioning system |
| PCT/CN2018/088275 WO2019104967A1 (en) | 2017-12-01 | 2018-05-24 | Multi-connected air conditioning system noise control method and controller |
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| CN201711251211.2A CN108195047B (en) | 2017-12-01 | 2017-12-01 | Noise control method and controller of multi-connected air conditioning system |
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| CN108195047B true CN108195047B (en) | 2020-08-18 |
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| CN109631248B (en) * | 2018-11-16 | 2021-05-25 | 青岛海尔空调电子有限公司 | Multi-split air conditioner refrigeration oil return noise reduction control method and system |
| CN109899939B (en) * | 2019-03-18 | 2022-04-19 | 珠海格力电器股份有限公司 | Method and system for controlling stable operation of unit |
| CN110410967B (en) * | 2019-07-03 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | Control method for pipeline noise of multi-split air conditioning system and multi-split air conditioning system |
| CN111503851B (en) * | 2020-04-29 | 2021-12-31 | 广东美的暖通设备有限公司 | Control method and device of multi-split air conditioning system |
| CN113531767B (en) * | 2021-07-26 | 2022-08-12 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system and air conditioning system |
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| JPH04198669A (en) * | 1990-11-28 | 1992-07-20 | Matsushita Seiko Co Ltd | Electric expansion valve control device for multi-chamber type air-conditioning machine |
| JP2007303696A (en) * | 2006-05-09 | 2007-11-22 | Matsushita Electric Ind Co Ltd | Operation control method of multi-chamber type air conditioner |
| JP2011047610A (en) * | 2009-08-28 | 2011-03-10 | Panasonic Corp | Multi-chamber type air conditioner |
| CN104501303A (en) * | 2014-11-24 | 2015-04-08 | 广东美的制冷设备有限公司 | Multi-split air conditioner and refrigerant circulation control method |
| CN104697120A (en) * | 2015-03-24 | 2015-06-10 | 广东美的暖通设备有限公司 | VRV (Varied Refrigerant Volume) system and noise reduction control method thereof |
| CN105258275B (en) * | 2015-09-23 | 2018-04-03 | 广东美的暖通设备有限公司 | The low noise control method of multiple on-line system and wherein electric expansion valve |
| CN106907834A (en) * | 2017-03-15 | 2017-06-30 | 广东美的暖通设备有限公司 | Multiple on-line system and its heat indoor set shut down when noise control method and apparatus |
| CN107131617B (en) * | 2017-06-12 | 2019-10-25 | 广东美的暖通设备有限公司 | Control method, device and the computer readable storage medium of air conditioner |
-
2017
- 2017-12-01 CN CN201711251211.2A patent/CN108195047B/en active Active
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2018
- 2018-05-24 WO PCT/CN2018/088275 patent/WO2019104967A1/en active Application Filing
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| WO2019104967A1 (en) | 2019-06-06 |
| CN108195047A (en) | 2018-06-22 |
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