CN108759064A - A kind of method for noise reduction control, device and multi-online air-conditioning system - Google Patents
A kind of method for noise reduction control, device and multi-online air-conditioning system Download PDFInfo
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- CN108759064A CN108759064A CN201810948837.7A CN201810948837A CN108759064A CN 108759064 A CN108759064 A CN 108759064A CN 201810948837 A CN201810948837 A CN 201810948837A CN 108759064 A CN108759064 A CN 108759064A
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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
- 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
- F24F11/70—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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of method for noise reduction control of present invention offer, device and multi-online air-conditioning system.Wherein above-mentioned method for noise reduction control and device can be applied to multi-online air-conditioning system, and the method for noise reduction control includes：When multi-online air-conditioning system runs on heating mode, the level of noise that the sound collection unit corresponding to each interior machine in shutdown status acquires in real time is obtained；Each level of noise is compared with predetermined threshold value；When target noise value is when preset time is persistently more than predetermined threshold value, calculating target noise is worth the step number to be regulated of corresponding object expansion valve；According to step number to be regulated, the current aperture of object expansion valve is adjusted to control the cold medium flux for flowing through object expansion valve.It is, the level of noise acquired in real time by sound collection unit, expansion valve opening is in the interior machine cold medium flux of shutdown status with optimal control in regulation room, effectively reduces the noise of multi-online air-conditioning system, improves user experience.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of method for noise reduction control, device and multi-online air-conditioning system.
Background technology
Currently, when multi-online air-conditioning system runs on heating mode, there is the case where machine is run in only part.To avoid
Interior machine deposits refrigerant, its indoor expansion valve step number of the interior machine of shutdown can open certain aperture.But when complete machine start and stop, load become
Change or interior machine turns to stop period by opening, multi-online air-conditioning system fluctuation of service, gas-liquid two-phase refrigerant high speed is logical in the interior machine of shutdown
When crossing indoor expansion valve, the lather collapse that refrigerant is formed generates high-decibel noise, influences user's comfort.
Invention content
In view of this, the present invention is directed to propose a kind of method for noise reduction control, to solve the above problems.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of method for noise reduction control is applied to multi-online air-conditioning system, and the multi-online air-conditioning system includes multiple interior machines,
Each interior machine is both provided with indoor expansion valve and sound collection unit, and the method for noise reduction control includes：When described multi-joint
For air conditioner system operation when heating mode, the sound collection unit obtained corresponding to each interior machine in shutdown status is real-time
The level of noise of acquisition；Each level of noise is compared with predetermined threshold value；When target noise value continues greatly in preset time
When the predetermined threshold value, the step number to be regulated that the target noise is worth corresponding object expansion valve is calculated, wherein the target
Level of noise is any one in multiple levels of noise；According to the step number to be regulated, adjusts the current of the object expansion valve and open
Degree is to control the cold medium flux for flowing through the object expansion valve.
Further, described to calculate the step of target noise is worth the step number to be regulated of corresponding object expansion valve, packet
It includes：According to correction factor, step number and the target noise value are corrected, the mesh is calculated according to preset formula Δ P=A*T1-B
Mark the step number to be regulated of expansion valve, wherein Δ P is the step number to be regulated, and T1 is the target noise value, and A is the amendment
Coefficient, B are the amendment step number.
Further, the correction factor is 2pls/db, and the amendment step number is (30~50) pls.
Further, described according to the step number to be regulated, the step of adjusting the current aperture of the object expansion valve, packet
It includes：Judge whether the current aperture of the object expansion valve is less than the step number to be regulated；If the object expansion valve is current
Aperture is not less than the step number to be regulated, then the current aperture of the object expansion valve is reduced according to the step number to be regulated；If
The current aperture of the object expansion valve is less than the step number to be regulated, then controls the object expansion valve and shut.
Further, the method further includes：When the delivery temperature of the multi-online air-conditioning system is more than the first temperature threshold
Value and when low-pressure temperature is more than second temperature threshold value, all current apertures are less than default aperture indoor expansion valve restore to
Default aperture.
Compared with the existing technology, method for noise reduction control of the present invention has the advantage that：
Method for noise reduction control of the present invention obtains each place when multi-online air-conditioning system runs on heating mode
The level of noise that sound collection unit corresponding to the interior machine of shutdown status acquires in real time；When target noise value is held in preset time
When continuing more than predetermined threshold value, the step number to be regulated that the target noise is worth corresponding object expansion valve is calculated, and to be regulated according to this
Step number adjusts the current aperture of object expansion valve to control the cold medium flux for flowing through object expansion valve.It is, being adopted by sound
The level of noise that acquires in real time of collection unit, expansion valve opening is in the interior machine refrigerant stream of shutdown status with optimal control in regulation room
Amount effectively reduces the noise of multi-online air-conditioning system, improves user experience.
Another object of the present invention is to propose a kind of noise reduction control device, to solve the above problems.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of noise reduction control device is applied to multi-online air-conditioning system, and the multi-online air-conditioning system includes multiple interior machines,
Each interior machine is both provided with indoor expansion valve and sound collection unit, and the noise reduction control device includes：Acquisition module is used
In when the multi-online air-conditioning system runs on heating mode, acquisition is each in the sound corresponding to the interior machine of shutdown status
The level of noise that collecting unit acquires in real time；Contrast module, for comparing each level of noise with predetermined threshold value；It calculates
Module, for when target noise value is when preset time is persistently more than the predetermined threshold value, calculating the target noise value and corresponding to
Object expansion valve step number to be regulated, wherein the target noise value be multiple levels of noise in any one；First executes
Module, for according to the step number to be regulated, adjusting the current aperture of the object expansion valve, to flow through the target swollen to control
The cold medium flux of swollen valve.
Further, the computing module is specifically used for：According to correction factor, step number and the target noise value are corrected,
The step number to be regulated of the object expansion valve is calculated according to preset formula Δ P=A*T1-B, wherein Δ P is described to be regulated
Step number, T1 are the target noise value, and A is the correction factor, and B is the amendment step number.
Further, first execution module is specifically used for：Judge whether the current aperture of the object expansion valve is small
In the step number to be regulated；If the current aperture of the object expansion valve is not less than the step number to be regulated, waited for according to described in
Adjusting step number reduces the current aperture of the object expansion valve；If the current aperture of the object expansion valve is less than described to be regulated
Step number then controls the object expansion valve and shuts.
Further, the noise reduction control device further includes：Second execution module, for working as the multi-online air-conditioning system
Delivery temperature when being more than the first temperature threshold and low-pressure temperature and being more than second temperature threshold value, all current apertures are less than and are preset
The indoor expansion valve of aperture restores to default aperture.
Possessed advantage is identical compared with the existing technology with above-mentioned noise reduction control device for the noise reduction control device, herein
It repeats no more.
Another object of the present invention is to propose a kind of multi-online air-conditioning system, to solve the above problems.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of multi-online air-conditioning system, which is characterized in that the multi-online air-conditioning system includes multiple interior machines, each described
Interior machine is both provided with indoor expansion valve and sound collection unit, and the multi-online air-conditioning system further includes：One or more control
Device；Memory, for storing one or more programs, when one or more of programs are held by one or more of controllers
When row so that one or more of controllers realize the method for noise reduction control as described in any one of claim 1-5.
Possessed advantage is identical compared with the existing technology with above-mentioned method for noise reduction control for the multi-online air-conditioning system,
This is repeated no more.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the circuit structure block diagram of the multi-online air-conditioning system described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the multi-online air-conditioning system described in the embodiment of the present invention；
Fig. 3 is the step flow chart of the method for noise reduction control described in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the noise reduction control device described in the embodiment of the present invention.
Reference sign：
1- multi-online air-conditioning systems, machine in 2-, 3- indoor expansion valves, 4- sound collection units, 5- memories, 6- controls
Device, 7- noise reduction control devices, 8- acquisition modules, 9- contrast modules, 10- computing modules, the first execution modules of 11-, 12- second are held
Row module.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the heating mode being previously mentioned in an embodiment of the present invention, refers to a kind of operation of multi-online air-conditioning system 1
Pattern can control 2 cold medium flux of interior machine in shutdown status when multi-online air-conditioning system 1 runs on heating mode.?
The target noise value being previously mentioned in the embodiment of the present invention refers to that the sound corresponding to each interior machine 2 in shutdown status is adopted
Collect any one in the level of noise that unit 4 acquires in real time.The object expansion valve being previously mentioned in an embodiment of the present invention refers to
The indoor expansion valve 3 of same interior machine 2 is set to the sound collection unit 4 of acquisition target noise value.In the embodiment of the present invention
In the step number to be regulated that is previously mentioned, refer to that object expansion valve needs the aperture turned down.It is previously mentioned in an embodiment of the present invention
Predetermined threshold value refers to the lowest noise value that can influence user's comfort, that is to say, that make an uproar when sound collection unit 4 is collected
When value is more than lowest noise value, which will influence the comfort of user.It is previously mentioned in an embodiment of the present invention
Default aperture, when referring to that multi-online air-conditioning system 1 runs on heating mode, the 2 corresponding interior of interior machine in shutdown status is swollen
The acquiescence aperture of swollen valve 3.
In first and second be previously mentioned in an embodiment of the present invention, it is used merely to an entity or operates and is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.
The present invention provides a kind of multi-online air-conditioning systems 1, can be when multi-online air-conditioning system 1 runs on heating mode
Realize noise reduction.Referring to Fig. 1, Fig. 1 is the circuit structure block diagram of the multi-online air-conditioning system 1 of the embodiment of the present invention.The multi-connected machine
Air-conditioning system 1 includes multiple interior machines 2, and each interior machine 2 is both provided with indoor expansion valve 3 and sound collection unit 4, each interior machine 2
Sound collection unit 4 can be set at the indoor expansion valve 3 of the interior machine 2, for example, referring to Fig. 2, multi-gang air-conditioner system
System 1 includes machine in machine and 2# in 1#, and machine is provided with sound collection unit and 1# indoor expansion valves in 1#, the sound collection of machine in 1#
Unit is set at 1# indoor expansion valves；Machine is provided with sound collection unit and 2# indoor expansion valves in 2#, in 1# in machine and 2#
Machine, the sound collection unit of machine is set at 2# indoor expansion valves in 2#.
The multi-online air-conditioning system 1 further includes：Memory 5, controller 6 and noise reduction control device 7.Wherein, controller 6 with
Memory 5, the indoor expansion valve 3 of each interior machine 2 and sound collection unit 4 are electrically connected.The noise reduction control device 7 includes extremely
A few software function module that can be stored in the form of software or firmware (firmware) in the memory 5.
Memory 5 can be used for storing software program and unit, as in the embodiment of the present invention noise reduction control device 7 and side
Program instruction corresponding to method, controller 6 is by running the noise reduction control device 7 and method that are stored in memory 5
Software program and unit, to perform various functions application and data processing, such as noise reduction control provided in an embodiment of the present invention
Method processed.
Wherein, the memory 5 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
The above sound collecting unit 4 can be sound transducer, noise transducer etc., and sound collection unit 4 is for real-time
Acquisition is each in the level of noise of indoor expansion valve 3 in the interior machine 2 of shutdown status.Above-mentioned indoor expansion valve 3 can be electronics
Expansion valve.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
First embodiment
Referring to FIG. 3, an embodiment of the present invention provides a kind of method for noise reduction control.The method for noise reduction control can be applied to
Multi-online air-conditioning system 1.As shown in figure 3, above-mentioned method for noise reduction control may comprise steps of：
Step S101 obtains the interior machine for being each in shutdown status when multi-online air-conditioning system runs on heating mode
The level of noise that corresponding sound collection unit acquires in real time.
In embodiments of the present invention, when multi-online air-conditioning system 1 runs on heating mode, it is in the interior machine of shutdown status
2 indoor expansion valve 3 can open certain aperture (for example, 60pls), when 1 complete machine start and stop of multi-online air-conditioning system, load variations
Or the interior machine 2 in shutdown status turns to stop period by opening, 1 fluctuation of service of multi-online air-conditioning system is interior in shutdown status
2 degree of supercooling of machine is small, and the more liquid of refrigerant gaseous state in heat exchanger are few, when gas-liquid two-phase refrigerant flows fast through in shutdown status
When the indoor expansion valve 3 of machine 2, a large amount of lather collapses generate high-decibel noise (for example, 40db).
When reducing aperture (for example, being reduced to 20pls) of indoor expansion valve 3 of the interior machine 2 in shutdown status, then exist
1 complete machine start and stop of multi-online air-conditioning system, load variations or the interior machine 2 in shutdown status turn to stop period by opening, and refrigerant is exchanging heat
Gaseous state lacks that liquid is more in device, and gas-liquid two-phase refrigerant passes through the foam that is formed when the indoor expansion valve 3 of the interior machine 2 in shutdown status
It can greatly reduce, noise also accordingly reduces.
In embodiments of the present invention, sound collection unit 4 can be sound transducer, noise transducer etc., sound collection
Unit 4 can be set at the indoor expansion valve 3 of the corresponding interior machine of the sound collection unit 42.Level of noise can work as refrigerant stream
When crossing the indoor expansion valve 3 of the interior machine 2 in shutdown status, 4 collected acoustic signals of sound collection unit.For example, please join
Read Fig. 2, organ's machine in 1#, machine booting in 2# then obtains the level of noise of the corresponding sound collection unit acquisition of machine in 1#, the noise
Value is the collected acoustic signals of sound collection unit when refrigerant flows through 1# indoor expansion valves.
Step S102 compares each level of noise with predetermined threshold value.
In embodiments of the present invention, predetermined threshold value can influence the lowest noise value (for example, 30db) of user's comfort,
That is, when 4 collected level of noise of sound collection unit is more than lowest noise value (for example, 30db), the level of noise is just
It can influence the comfort of user.Since everyone is different to the sensitivity of noise, therefore the predetermined threshold value can be according to user couple
The sensitivity of noise is flexibly arranged.
Step S103, when target noise value is when preset time is persistently more than predetermined threshold value, calculating target noise value corresponds to
Object expansion valve step number to be regulated, wherein target noise value be multiple levels of noise in any one.
In embodiments of the present invention, target noise value can be the sound corresponding to each interior machine 2 in shutdown status
Any one in the level of noise that collecting unit 4 acquires in real time, object expansion valve can be and the sound that acquires target noise value
Collecting unit 4 is set to the indoor expansion valve 3 of same interior machine 2.When target noise value continues greatly in preset time (for example, 5s)
When predetermined threshold value (for example, 30db), target noise value can influence user's comfort, need to reduce working as object expansion valve at this time
Preceding aperture, to reduce noise.
Inventor has found by repeatedly research and experimental verification, when 4 collected level of noise of sound collection unit is in (40
~∞) sections such as db, (35~40) db, (30~35) db when, the aperture phase of 4 corresponding indoor expansion valve 3 of sound collection unit
The step number of reduction 40pls, 30pls, 20pls for answering, can reduce refrigerant by the noise that is generated when indoor expansion valve 3, therefore,
When target noise value preset time persistently be more than predetermined threshold value when, need calculate target noise be worth corresponding object expansion valve
Step number to be regulated, to realize the effect for reducing noise.
In embodiments of the present invention, correction factor, amendment step number and target noise value can be substituted into preset formula Δ P=
In A*T1-B, to calculate the step number to be regulated of object expansion valve, wherein Δ P is step number to be regulated, and T1 is target noise value, A
For correction factor, B is to correct step number.
Optionally, correction factor can be 2pls/db, and it can be any one value in (30~50) pls to correct step number,
Correct the preferred 40pls of step number.
Step S104, according to step number to be regulated, the current aperture for adjusting object expansion valve flows through object expansion valve to control
Cold medium flux.
In embodiments of the present invention, usual applied to the indoor expansion valve 3 of multi-online air-conditioning system 1 at present is all that electronics is swollen
Swollen valve, can be directly by the current open degree feedback of itself to controller 6.Current aperture can be that multi-online air-conditioning system 1 is transported
Row is when heating mode, the acquiescence aperture (for example, 60pls) of indoor expansion valve 3；Can also be indoors expansion valve 3 acquiescence open
Later aperture is adjusted on the basis of degree.
In embodiments of the present invention, after the step number to be regulated that object expansion valve is calculated according to step S103, first, sentence
Whether the current aperture of disconnected object expansion valve is less than step number to be regulated；If the current aperture of object expansion valve is not less than step to be regulated
Number then reduces the current aperture of object expansion valve according to step number to be regulated, and the aperture after object expansion valve reduction step number is to work as
The difference of preceding aperture and step number to be regulated, for example, the current aperture of object expansion valve is 60pls, the step to be regulated of object expansion valve
Number be 40pls, then by the current aperture of object expansion valve reduce 40pls, that is, object expansion valve reduce step number after aperture be
20pls；If the current aperture of object expansion valve is less than step number to be regulated, control targe expansion valve is shut, for example, object expansion
The current aperture of valve is 30pls, and the step number to be regulated of object expansion valve is 35pls, then directly shuts object expansion valve.
In embodiments of the present invention, when multi-online air-conditioning system 1 is stablized, if multiple interior machines 2 in shutdown status
Indoor expansion valve 3 aperture regulation it is too small, then excessive discharge temperature or low-pressure temperature may be caused too low, and then in causing
2 hydrops of machine, multi-online air-conditioning system 1 lack refrigerant, need to release the indoor expansion valve to the interior machine 2 in shutdown status at this time
3 control, therefore, method for noise reduction control provided in an embodiment of the present invention further include step S105.
Step S105 is more than second when the delivery temperature of multi-online air-conditioning system is more than the first temperature threshold and low-pressure temperature
When temperature threshold, the indoor expansion valve that all current apertures are less than to default aperture restores to default aperture.
In embodiments of the present invention, the first temperature threshold can be 100 DEG C；The low-pressure temperature of multi-online air-conditioning system 1 can
To be the difference of outdoor environment temperature and evaporating temperature, second temperature threshold value can be 15 DEG C；Default aperture can be multi-connected machine sky
When adjusting system 1 runs on heating mode, in shutdown status 2 corresponding indoor expansion valve 3 of interior machine acquiescence aperture (for example,
60pls).It is, as 100 DEG C of Tda > or 15 DEG C of Tao-Pst >, all current apertures are less than to the room of default aperture
Interior expansion valve 3 restores to 60pls, wherein Tda indicates that the delivery temperature of multi-online air-conditioning system 1, Tao indicate outdoor environment
Temperature, Pst indicate evaporating temperature.
Method for noise reduction control provided in an embodiment of the present invention passes through when multi-online air-conditioning system 1 runs on heating mode
The acquisition in real time of sound collection unit 4 is each in the level of noise of the interior machine 2 of shutdown status, when the level of noise of any one interior machine 2
When preset time is persistently more than predetermined threshold value, for example, 5s is persistently more than 30db, then the interior calculated corresponding to the interior machine 2 is swollen
The step number to be regulated of swollen valve 3；The aperture for reducing indoor expansion valve 3 according to the step number to be regulated being calculated later is flowed through with controlling
The cold medium flux of object expansion valve carrys out 2 cold medium flux of interior machine that optimal control is in shutdown status with this, effectively reduces multi-connected machine
The noise of air-conditioning system 1, improves user experience.
Second embodiment
Referring to FIG. 4, an embodiment of the present invention provides a kind of noise reduction control devices 7.Above-mentioned noise reduction control device 7 can answer
For multi-online air-conditioning system 1.As shown in figure 4, above-mentioned noise reduction control device 7 may include：Acquisition module 8, contrast module 9,
Computing module 10, the first execution module 11 and the second execution module 12.
Acquisition module 8, for when multi-online air-conditioning system runs on heating mode, obtaining and being each in shutdown status
The level of noise that sound collection unit corresponding to interior machine acquires in real time.
In the embodiment of the present invention, which can be used for executing the step S101 in first embodiment.
Contrast module 9, for comparing each level of noise with predetermined threshold value.
In the embodiment of the present invention, which can be used for executing the step S102 in first embodiment.
Computing module 10, for when target noise value preset time persistently be more than predetermined threshold value when, calculate target noise
It is worth the step number to be regulated of corresponding object expansion valve, wherein target noise value is any one in multiple levels of noise.
In the embodiment of the present invention, which can be used for executing the step S103 in first embodiment.
Optionally, which is specifically used for：According to correction factor, step number and target noise value are corrected, according to pre-
If formula Δ P=A*T1-B calculates the step number to be regulated of object expansion valve, wherein Δ P is step number to be regulated, and T1 makes an uproar for target
Value, A are correction factor, and B is to correct step number.
First execution module 11, for according to step number to be regulated, the current aperture for adjusting object expansion valve to be flowed through with controlling
The cold medium flux of object expansion valve.
In the embodiment of the present invention, which can be used for executing the step S104 in first embodiment.
Optionally, which is specifically used for：Judge whether the current aperture of object expansion valve is less than to wait adjusting
Save step number；If the current aperture of object expansion valve is not less than step number to be regulated, object expansion valve is reduced according to step number to be regulated
Current aperture；If the current aperture of object expansion valve is less than step number to be regulated, control targe expansion valve is shut.
Second execution module 12 is more than the first temperature threshold and low pressure temperature for the delivery temperature when multi-online air-conditioning system
When degree is more than second temperature threshold value, the indoor expansion valve that all current apertures are less than to default aperture restores to default aperture.
In the embodiment of the present invention, which can be used for executing the step S105 in first embodiment.
In conclusion a kind of method for noise reduction control, device and multi-online air-conditioning system provided by the invention.Wherein above-mentioned drop
Control method and device of making an uproar can be applied to multi-online air-conditioning system, and the multi-online air-conditioning system includes multiple interior machines, each
The interior machine is both provided with indoor expansion valve and sound collection unit.The method for noise reduction control includes：When multi-gang air-conditioner system
When system runs on heating mode, what the sound collection unit corresponding to each interior machine in shutdown status of acquisition acquired in real time makes an uproar
Value；Each level of noise is compared with predetermined threshold value；When target noise value preset time persistently be more than predetermined threshold value when,
Calculate the step number to be regulated that target noise is worth corresponding object expansion valve, wherein target noise value is appointing in multiple levels of noise
Meaning one；According to step number to be regulated, the current aperture of object expansion valve is adjusted to control the cold medium flux for flowing through object expansion valve.
It is, the level of noise acquired in real time by sound collection unit, expansion valve opening is in optimal control and is shut down in regulation room
The interior machine cold medium flux of state effectively reduces the noise of multi-online air-conditioning system, improves user experience.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of method for noise reduction control is applied to multi-online air-conditioning system (1), which is characterized in that the multi-online air-conditioning system
(1) include multiple interior machines (2), each interior machine (2) is both provided with indoor expansion valve (3) and sound collection unit (4), described
Method for noise reduction control includes：
When the multi-online air-conditioning system (1) runs on heating mode, it is right to obtain each interior machine (2) institute in shutdown status
The level of noise that the sound collection unit (4) answered acquires in real time；
Each level of noise is compared with predetermined threshold value；
When target noise value preset time persistently be more than the predetermined threshold value when, calculate the corresponding target of the target noise value
The step number to be regulated of expansion valve, wherein the target noise value is any one in multiple levels of noise；
According to the step number to be regulated, adjusts the current aperture of the object expansion valve and flow through the object expansion valve to control
Cold medium flux.
2. method for noise reduction control according to claim 1, which is characterized in that the calculating target noise value is corresponding
The step of step number to be regulated of object expansion valve, including：
According to correction factor, step number and the target noise value are corrected, the mesh is calculated according to preset formula Δ P=A*T1-B
Mark the step number to be regulated of expansion valve, wherein Δ P is the step number to be regulated, and T1 is the target noise value, and A is the amendment
Coefficient, B are the amendment step number.
3. method for noise reduction control according to claim 2, which is characterized in that the correction factor is 2pls/db, described to repair
Positive step number is (30~50) pls.
4. method for noise reduction control according to claim 1, which is characterized in that described according to the step number to be regulated, adjustment
The step of current aperture of the object expansion valve, including：
Judge whether the current aperture of the object expansion valve is less than the step number to be regulated；
If the current aperture of the object expansion valve is not less than the step number to be regulated, institute is reduced according to the step number to be regulated
State the current aperture of object expansion valve；
If the current aperture of the object expansion valve is less than the step number to be regulated, controls the object expansion valve and shut.
5. method for noise reduction control according to claim 1, which is characterized in that the method further includes：
It is more than second temperature threshold when the delivery temperature of the multi-online air-conditioning system (1) is more than the first temperature threshold and low-pressure temperature
When value, the indoor expansion valve (3) that all current apertures are less than to default aperture restores to default aperture.
6. a kind of noise reduction control device is applied to multi-online air-conditioning system (1), which is characterized in that the multi-online air-conditioning system
(1) include multiple interior machines (2), each interior machine (2) is both provided with indoor expansion valve (3) and sound collection unit (4), described
Noise reduction control device (7) includes：
Acquisition module (8), for when the multi-online air-conditioning system (1) runs on heating mode, obtaining each in shutdown
The level of noise that sound collection unit (4) corresponding to the interior machine (2) of state acquires in real time；
Contrast module (9), for comparing each level of noise with predetermined threshold value；
Computing module (10), for when target noise value preset time persistently be more than the predetermined threshold value when, calculate the mesh
Mark the step number to be regulated of the corresponding object expansion valve of level of noise, wherein the target noise value is arbitrary in multiple levels of noise
One；
First execution module (11), for according to the step number to be regulated, adjusting the current aperture of the object expansion valve to control
System flows through the cold medium flux of the object expansion valve.
7. noise reduction control device according to claim 6, which is characterized in that the computing module (10) is specifically used for：
According to correction factor, step number and the target noise value are corrected, the mesh is calculated according to preset formula Δ P=A*T1-B
Mark the step number to be regulated of expansion valve, wherein Δ P is the step number to be regulated, and T1 is the target noise value, and A is the amendment
Coefficient, B are the amendment step number.
8. noise reduction control device according to claim 6, which is characterized in that first execution module (11) is specifically used
In：
Judge whether the current aperture of the object expansion valve is less than the step number to be regulated；
If the current aperture of the object expansion valve is not less than the step number to be regulated, institute is reduced according to the step number to be regulated
State the current aperture of object expansion valve；
If the current aperture of the object expansion valve is less than the step number to be regulated, controls the object expansion valve and shut.
9. noise reduction control device according to claim 6, which is characterized in that the noise reduction control device (7) further includes：
Second execution module (12), for when the multi-online air-conditioning system (1) delivery temperature be more than the first temperature threshold and
When low-pressure temperature is more than second temperature threshold value, all current apertures are less than default aperture indoor expansion valve (3) restore to
Default aperture.
10. a kind of multi-online air-conditioning system, which is characterized in that the multi-online air-conditioning system (1) includes multiple interior machines (2), often
A interior machine (2) is both provided with indoor expansion valve (3) and sound collection unit (4), and the multi-online air-conditioning system (1) is also wrapped
It includes：
One or more controllers (6)；
Memory (5), for storing one or more programs, when one or more of programs are by one or more of controls
When device (6) executes so that one or more of controllers (6) realize the noise reduction control as described in any one of claim 1-5
Method processed.
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