CN105258275B - The low noise control method of multiple on-line system and wherein electric expansion valve - Google Patents
The low noise control method of multiple on-line system and wherein electric expansion valve Download PDFInfo
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- CN105258275B CN105258275B CN201510612020.9A CN201510612020A CN105258275B CN 105258275 B CN105258275 B CN 105258275B CN 201510612020 A CN201510612020 A CN 201510612020A CN 105258275 B CN105258275 B CN 105258275B
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- expansion valve
- electric expansion
- sound pressure
- indoor set
- pressure level
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room 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
- 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
Abstract
The invention discloses a kind of multiple on-line system and the wherein low noise control method of electric expansion valve, wherein, this method comprises the following steps：The sound pressure level of electric expansion valve in each indoor set is gathered in real time and is judged；If the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, judge that noise exception occurs in the electric expansion valve, and obtain the model of the electric expansion valve；Default electric expansion valve pressure difference aperture sound pressure level array is called to obtain multiple aperture controlling values according to the model of the electric expansion valve, and the electric expansion valve is controlled successively according to multiple aperture controlling values to obtain multiple current sound pressure levels；Aperture desired value is obtained according to multiple current sound pressure levels, and is controlled such that the electric expansion valve enters minimal noise pattern to the electric expansion valve according to aperture desired value.This method can realize that electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture in each indoor set, greatly reduces noise.
Description
Technical field
The present invention relates to multi-connected machine technology field, the low noise acoustic control of electric expansion valve in more particularly to a kind of multiple on-line system
Method processed and a kind of multiple on-line system.
Background technology
In correlation technique, for multiple on-line system in heating standby, the electric expansion valve of all or part of indoor set is in small
Flow throttle, and the electric expansion valve of all indoor sets unifies opened loop control, i.e. all indoor sets of holding state
Electric expansion valve is uniformly controlled in a certain specific aperture.
However, electric expansion valve used is uniformly controlled aperture, because each indoor set workload is different, part indoor set
Electric expansion valve can usually produce larger refrigerant sound, or even amplify in evaporator, have a strong impact on product quality and public praise；Its
Secondary, the noise pressure difference and aperture of electric expansion valve have a great influence, and all electric expansion valve opened loop controls, will machine indoors
The electric expansion valve of some or all indoor sets produces still under certain specific aperture when being influenceed by outer work condition and load change
Raw larger Refrigerant noise；In addition, each indoor set may use the electric expansion valve of different model, and the electronics of different model
Larger difference between expansion valve be present, if all electric expansion valves are uniformly controlled in certain specific aperture, due to each electronic expansion
The throttle structure and flow curve difference of valve, in the possible noise very little of the specific aperture lower part electric expansion valve, it is also possible to
Serious noise problem be present in part electric expansion valve.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose can realize each indoor set in a kind of low noise control method of the electric expansion valve in multiple on-line system is proposed
Middle electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture, substantially reduces multiple on-line system and enters heating standby pattern
Noise afterwards.
It is another object of the present invention to propose a kind of multiple on-line system.
To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of the low of electric expansion valve in multiple on-line system
Noise control method, wherein, the multiple on-line system includes outdoor unit and multiple indoor sets, each room in the multiple indoor set
Interior machine includes electric expansion valve, the described method comprises the following steps：It is real when the multiple on-line system enters heating standby pattern
When gather the sound pressure level of electric expansion valve in each indoor set, and the sound pressure level of electric expansion valve in each indoor set is sentenced
It is disconnected；If the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, the indoor set is judged
There is noise exception in middle electric expansion valve, and obtains the model of electric expansion valve in the indoor set；According to electronics in the indoor set
The model of expansion valve calls default electric expansion valve pressure difference-aperture-sound pressure level array to obtain multiple aperture controlling values, and root
Electric expansion valve in the indoor set is controlled successively according to the multiple aperture controlling value to obtain multiple current sound pressure levels；Root
Aperture desired value is obtained according to the multiple current sound pressure level, and according to the aperture desired value to electric expansion valve in the indoor set
It is controlled such that in the indoor set that electric expansion valve enters minimal noise pattern.
The low noise control method of electric expansion valve in multiple on-line system according to embodiments of the present invention, by gathering in real time
The sound pressure level of electric expansion valve and judged in each indoor set, if in any one indoor set electric expansion valve acoustic pressure
Level is more than default standard sound pressure level, then judges that noise exception occurs in electric expansion valve in the indoor set, and obtain the indoor set
The model of middle electric expansion valve, default electric expansion valve pressure is then called according to the model of electric expansion valve in the indoor set
Difference-aperture-sound pressure level array is to obtain multiple aperture controlling values, and according to multiple aperture controlling values successively to electric in the indoor set
Sub- expansion valve is controlled to obtain multiple current sound pressure levels, finally obtains aperture desired value according to multiple current sound pressure levels, and
It is controlled such that in the indoor set that electric expansion valve enters minimum to electric expansion valve in the indoor set according to aperture desired value
Noise pattern, so as to realize, electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture in each indoor set, greatly
The big multiple on-line system that reduces meets the needs of user, improves Consumer's Experience into the noise after heating standby pattern.
According to one embodiment of present invention, the multiple aperture controlling value be the default electric expansion valve pressure difference-
Aperture corresponding to minimal sound pressure levels under each pressure difference in aperture-sound pressure level array.
According to one embodiment of present invention, it is described that aperture desired value is obtained according to the multiple current sound pressure level, specifically
Including：Obtain the minimal sound pressure levels in the multiple current sound pressure level；Minimal sound pressure levels in the multiple current sound pressure level
During sound pressure level when occurring noise exception less than electric expansion valve in the indoor set, by the minimum in the multiple current sound pressure level
Aperture controlling value corresponding to sound pressure level is as the aperture desired value.
Also, it is described that aperture desired value is obtained according to the multiple current sound pressure level, in addition to：When the multiple current sound
When the minimal sound pressure levels arbitrarily downgraded are more than or equal to sound pressure level when noise exception occurs in electric expansion valve in the indoor set, by this
The initial opening value of electric expansion valve is as the aperture desired value in indoor set.
According to one embodiment of present invention, if the sound pressure level of electric expansion valve is less than or waited in any one indoor set
In the default standard sound pressure level, then keep the current aperture of electric expansion valve in the indoor set constant.
To reach above-mentioned purpose, a kind of multiple on-line system that another aspect of the present invention embodiment proposes, including：Outdoor unit；
Multiple indoor sets, each indoor set includes electric expansion valve in the multiple indoor set；Multiple sound level meters, the multiple sound level meter
In each sound level meter correspondingly detect the sound pressure level of electric expansion valve in each indoor set；Control module, the control module are used for
Gather the sound pressure level of electric expansion valve in each indoor set in real time when the multiple on-line system enters heating standby pattern, and it is right
The sound pressure level of electric expansion valve is judged in each indoor set, wherein, if electric expansion valve in any one indoor set
Sound pressure level is more than default standard sound pressure level, and the control module then judges that it is different noise occur for electric expansion valve in the indoor set
Often, and the model of electric expansion valve in the indoor set is obtained, and is called in advance according to the model of electric expansion valve in the indoor set
If electric expansion valve pressure difference-aperture-sound pressure level array to obtain multiple aperture controlling values, and controlled according to the multiple aperture
Value is controlled to electric expansion valve in the indoor set to obtain multiple current sound pressure levels successively, and the control module according to
The multiple current sound pressure level obtains aperture desired value, and electric expansion valve in the indoor set is entered according to the aperture desired value
Row control is so that electric expansion valve enters minimal noise pattern in the indoor set.
Multiple on-line system according to embodiments of the present invention, it is swollen that electronics in each indoor set is correspondingly detected by each sound level meter
The sound pressure level of swollen valve, then control module gather the sound pressure level of electric expansion valve in each indoor set in real time and judged, its
In, if the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, control module then judges
There is noise exception in electric expansion valve in the indoor set, and obtains the model of electric expansion valve in the indoor set, then controls mould
Root tuber calls default electric expansion valve pressure difference-aperture-sound pressure level array to obtain according to the model of electric expansion valve in the indoor set
Multiple aperture controlling values are taken, and electric expansion valve in the indoor set are controlled successively according to multiple aperture controlling values to obtain
Multiple current sound pressure levels, last control module obtain aperture desired value according to multiple current sound pressure levels, and according to aperture desired value
It is controlled such that in the indoor set that electric expansion valve enters minimal noise pattern to electric expansion valve in the indoor set, so as to
Enough realize that electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture in each indoor set, greatly reduces multi-connected machine system
The noise that system enters after heating standby pattern, meets the needs of user, improves Consumer's Experience.
According to one embodiment of present invention, the multiple aperture controlling value be the default electric expansion valve pressure difference-
Aperture corresponding to minimal sound pressure levels under each pressure difference in aperture-sound pressure level array.
According to one embodiment of present invention, the control module is further used for obtaining in the multiple current sound pressure level
Minimal sound pressure levels, and the minimal sound pressure levels in the multiple current sound pressure level are less than electric expansion valve in the indoor set and occurred
During sound pressure level during noise exception, using aperture controlling value corresponding to the minimal sound pressure levels in the multiple current sound pressure level as institute
State aperture desired value.
Also, when the minimal sound pressure levels in the multiple current sound pressure level are more than or equal to electric expansion valve in the indoor set
Occur noise exception when sound pressure level when, the control module is using the initial opening value of electric expansion valve in the indoor set as institute
State aperture desired value.
According to one embodiment of present invention, if the sound pressure level of electric expansion valve is less than or waited in any one indoor set
In the default standard sound pressure level, the control module then keeps the current aperture of electric expansion valve in the indoor set constant.
Brief description of the drawings
Fig. 1 is the flow of the low noise control method of electric expansion valve in the multiple on-line system according to the embodiment of the present invention
Figure；
Fig. 2 is the A model electric expansion valves that numbering is 2 in the multiple on-line system according to a specific embodiment of the invention
The flow chart of low noise control method；And
Fig. 3 is the block diagram according to the multiple on-line system of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The low noise of electric expansion valve in the multiple on-line system proposed according to embodiments of the present invention described with reference to the accompanying drawings
Acoustic control method and multiple on-line system.
Fig. 1 is the flow of the low noise control method of electric expansion valve in the multiple on-line system according to the embodiment of the present invention
Figure, wherein, the multiple on-line system includes outdoor unit and multiple indoor sets, and each indoor set includes electric expansion valve.Such as Fig. 1 institutes
Show, the low noise control method of electric expansion valve comprises the following steps in the multiple on-line system：
S1, when multiple on-line system enters heating standby pattern, the sound of electric expansion valve in each indoor set is gathered in real time
Arbitrarily downgrade, and the sound pressure level of electric expansion valve in each indoor set is judged.
Wherein, the acoustic pressure of corresponding electric expansion valve can be detected by being arranged on the sound level meter on each electric expansion valve
Level, the sound pressure level that then control module can detect to each sound level meter in real time are acquired.
It should be noted that in an embodiment of the present invention, when multiple on-line system enters heating standby pattern, to multi-joint
The low noise acoustic control of electric expansion valve includes automatic control mode and MANUAL CONTROL mode in machine system.Wherein, automatically controlling
Pattern, control module are acquired and judged to the sound pressure level of each sound level meter detection in real time；In MANUAL CONTROL mode, mould is controlled
The sound pressure level that root tuber detects according to user instruction to respective levels meter is acquired and judged.
S2, if the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, judge
There is noise exception in electric expansion valve in the indoor set, and obtains the model of electric expansion valve in the indoor set.
Wherein, standard sound pressure level Lp0 can be prestored in the control module.
S3, default electric expansion valve pressure difference-aperture-sound pressure level is called according to the model of electric expansion valve in the indoor set
Array is controlled to electric expansion valve in the indoor set successively with obtaining multiple aperture controlling values according to multiple aperture controlling values
Make to obtain multiple current sound pressure levels.
Wherein, multiple aperture controlling values is under each pressure differences in default electric expansion valve pressure difference-aperture-sound pressure level array
Aperture corresponding to minimal sound pressure levels.
Also, multiple electric expansion valve pressure difference-aperture-sound pressure level arrays, each electronics can be prestored in the control module
Expansion valve pressure difference-aperture-sound pressure level array is corresponding with the model of electric expansion valve.Such as corresponding to A model electric expansion valves
Electric expansion valve pressure difference-aperture-sound pressure level array can be as shown in table 1 below, electric expansion valve pressure corresponding to Type B electric expansion valve
Difference-aperture-sound pressure level array can be as shown in table 2 below.
Table 1
Table 2
Wherein, n and m is positive integer.
S4, aperture desired value is obtained according to multiple current sound pressure levels, and according to aperture desired value to electronics in the indoor set
Expansion valve is controlled such that in the indoor set that electric expansion valve enters minimal noise pattern.
The low noise control method of electric expansion valve in multiple on-line system according to embodiments of the present invention, by gathering in real time
The sound pressure level of electric expansion valve and judged in each indoor set, if in any one indoor set electric expansion valve acoustic pressure
Level is more than default standard sound pressure level, then judges that noise exception occurs in electric expansion valve in the indoor set, and obtain the indoor set
The model of middle electric expansion valve, default electric expansion valve pressure is then called according to the model of electric expansion valve in the indoor set
Difference-aperture-sound pressure level array is to obtain multiple aperture controlling values, and according to multiple aperture controlling values successively to electric in the indoor set
Sub- expansion valve is controlled to obtain multiple current sound pressure levels, finally obtains aperture desired value according to multiple current sound pressure levels, and
It is controlled such that in the indoor set that electric expansion valve enters minimum to electric expansion valve in the indoor set according to aperture desired value
Noise pattern, so as to realize, electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture in each indoor set, greatly
The big multiple on-line system that reduces meets the needs of user, improves Consumer's Experience into the noise after heating standby pattern.
According to one embodiment of present invention, in step s 4, aperture target is obtained according to the multiple current sound pressure level
Value, is specifically included：Obtain the minimal sound pressure levels in the multiple current sound pressure level；Minimum in the multiple current sound pressure level
, will be in the multiple currently sound pressure level when sound pressure level is less than sound pressure level when noise exception occurs in electric expansion valve in the indoor set
Minimal sound pressure levels corresponding to aperture controlling value as the aperture desired value.
Also, it is described that aperture desired value is obtained according to the multiple current sound pressure level, in addition to：When the multiple current sound
When the minimal sound pressure levels arbitrarily downgraded are more than or equal to sound pressure level when noise exception occurs in electric expansion valve in the indoor set, by this
The initial opening value of electric expansion valve is as the aperture desired value in indoor set.Wherein, it is swollen to electronics according to initial opening value
Swollen valve is controlled, and is exactly adjusted electric expansion valve and is entered minimal noise pattern.
Specifically, according to one embodiment of present invention, if as shown in Fig. 2 occurring noise exception in certain indoor set
The model A of electric expansion valve, and it is 2 to number, then the opening control signal of the electric expansion valve is that (initial opening value is P2
P20), there is the sound pressure level Lp2 corresponding to the abnormal electric expansion valve of noise and be more than default standard sound pressure level Lp0, so as to need
Low noise regulation is carried out to the electric expansion valve.Call electric expansion valve pressure difference-aperture-corresponding to A model electric expansion valves
Sound pressure level array LpA (assuming that array dimension is 4 × 6), selects minimal sound pressure levels under each pressure differential deltap P1~Δ P4 from array LpA
Corresponding aperture is multiple aperture controlling values, such as PA3, PA2, PA5, PA6.And be correspondingly arranged P2 signals be followed successively by PA3, PA2,
PA5, PA6, aperture control, while sound corresponding to the electric expansion valve are carried out to the electric expansion valve successively according to these P2 signals
Level meter feeds back current sound pressure level LpA3, LpA2, LpA5, LpA6, and multiple current sound pressure level LpA3, LpA2, LpA5, LpA6 are carried out
The small i.e. Min of calculating (LpA3, LpA2, LpA5, LpA6) is selected, so as to can obtain the minimal sound pressure levels in multiple current sound pressure levels for example
LpA5, aperture controlling value corresponding to acquisition LpA5 is PA5, if LpA5 is less than Lp2, P2 is arranged into PA5, to control the electronics
Expansion valve enters minimal noise pattern；If LpA5 is more than or equal to Lp2, P2 is arranged to initial opening value P20, wherein, just
Beginning setting has been the minimal noise pattern of the electric expansion valve.
According to one embodiment of present invention, if the sound pressure level of electric expansion valve is less than or waited in any one indoor set
In default standard sound pressure level, then keep the current aperture of electric expansion valve in the indoor set constant.
In summary, in an embodiment of the present invention, by establishing electronic expansion valve controls signal array Pi, wherein i=
1,2,3 ... represents electronic expansion valve of indoor unit numbering, so as to realize control module such as outdoor unit control chip to each interior
The aperture of electric expansion valve is independently controlled in machine, so as to according to different load set different target apertures, reduction portion
Divide the generation of valve refrigerant sound；Also, by establishing electric expansion valve pressure difference-aperture-sound corresponding to different model electric expansion valve
Array of arbitrarily downgrading Lpi, wherein i=A, B, C, D ... ..., the model or batch code of electric expansion valve in indoor set are represented, by these
Array Lpi is default in the control module, and presets the standard sound pressure level Lp0 of the basic noise of indoor set in the control module, this
Sample can realize that the independence of each electric expansion valve is optimal when each indoor set is using the electric expansion valve of different model or different batches
Change control, ensure the low noiseization control of electric expansion valve in whole indoor sets；In addition, increase minimal noise mould on control strategy
Formula, on hardware on each electric expansion valve relative set sound level meter to detect the sound pressure level of each electric expansion valve and carry out anti-
Feedback, when outer work condition and load change, based on sound level meter feedback signal, realize electric expansion valve with pressure difference and the dimension of aperture two
The control of closed loop low noiseization, avoid part electric expansion valve from larger noise occur.
Fig. 3 is the block diagram according to the multiple on-line system of the embodiment of the present invention.As shown in figure 3, the multiple on-line system
100 include outdoor unit 10, multiple indoor sets 20, multiple sound level meters 30 and control module 40.
Wherein, each indoor set 20 includes electric expansion valve 201 in multiple indoor sets, each sound level meter in multiple sound level meters
The 30 corresponding sound pressure levels for detecting electric expansion valve 201 in each indoor set.According to one embodiment of present invention, each sound level meter
30 can be correspondingly arranged in each indoor set on electric expansion valve 201.
The control chip of such as outdoor unit of control module 40 is used for real-time when multiple on-line system enters heating standby pattern
The sound pressure level of electric expansion valve 201 in each indoor set is gathered, and it is grading to the acoustic pressure of electric expansion valve 201 in each indoor set
Row judgement, wherein, if the sound pressure level of electric expansion valve 201 is more than default standard sound pressure level Lp0 in any one indoor set,
Control module 40 then judges that noise exception occurs in electric expansion valve in the indoor set, and obtains electric expansion valve in the indoor set
Model, and default electric expansion valve pressure difference-aperture-acoustic pressure series is called according to the model of electric expansion valve in the indoor set
Group is controlled to electric expansion valve in the indoor set successively with obtaining multiple aperture controlling values according to multiple aperture controlling values
To obtain multiple current sound pressure levels, and control module 40 obtains aperture desired values according to multiple current sound pressure levels, and according to opening
Degree desired value is controlled such that in the indoor set that electric expansion valve enters minimal noise mould to electric expansion valve in the indoor set
Formula.
Wherein, standard sound pressure level Lp0 can be prestored in the control module, and multiple aperture controlling values are that default electronics is swollen
Aperture corresponding to minimal sound pressure levels under each pressure difference in swollen valve pressure difference-aperture-sound pressure level array.
Also, multiple electric expansion valve pressure difference-aperture-sound pressure level arrays, Mei Ge electricity can be prestored in control module 40
Sub- expansion valve pressure difference-aperture-sound pressure level array is corresponding with the model of electric expansion valve.Such as A models electric expansion valve is corresponding
Electric expansion valve pressure difference-aperture-sound pressure level array can be as listed in Table 1, electric expansion valve corresponding to Type B electric expansion valve
Pressure difference-aperture-sound pressure level array can be as shown in upper table 2.
Multiple on-line system according to embodiments of the present invention, it is swollen that electronics in each indoor set is correspondingly detected by each sound level meter
The sound pressure level of swollen valve, then control module gather the sound pressure level of electric expansion valve in each indoor set in real time and judged, its
In, if the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, control module then judges
There is noise exception in electric expansion valve in the indoor set, and obtains the model of electric expansion valve in the indoor set, then controls mould
Root tuber calls default electric expansion valve pressure difference-aperture-sound pressure level array to obtain according to the model of electric expansion valve in the indoor set
Multiple aperture controlling values are taken, and electric expansion valve in the indoor set are controlled successively according to multiple aperture controlling values to obtain
Multiple current sound pressure levels, last control module obtain aperture desired value according to multiple current sound pressure levels, and according to aperture desired value
It is controlled such that in the indoor set that electric expansion valve enters minimal noise pattern to electric expansion valve in the indoor set, so as to
Enough realize that electric expansion valve carries out the control of closed loop low noiseization with pressure difference and aperture in each indoor set, greatly reduces multi-connected machine system
The noise that system enters after heating standby pattern, meets the needs of user, improves Consumer's Experience.
According to one embodiment of present invention, control module 40 is further used for obtaining in the multiple current sound pressure level
Minimal sound pressure levels, and the minimal sound pressure levels in the multiple current sound pressure level are less than electric expansion valve in the indoor set and made an uproar
During sound pressure level during sound exception, using aperture controlling value corresponding to the minimal sound pressure levels in the multiple current sound pressure level as described in
Aperture desired value.
Also, when the minimal sound pressure levels in the multiple current sound pressure level are more than or equal to electric expansion valve in the indoor set
Occur noise exception when sound pressure level when, control module 40 is using the initial opening value of electric expansion valve in the indoor set as described in
Aperture desired value.Wherein, electric expansion valve is controlled according to initial opening value, exactly adjusts electric expansion valve and enter minimum
Noise pattern.
According to one embodiment of present invention, if the sound pressure level of electric expansion valve is less than or waited in any one indoor set
In the default standard sound pressure level, control module 40 then keeps the current aperture of electric expansion valve in the indoor set constant.
In summary, in the multiple on-line system of the embodiment of the present invention, by establishing electronic expansion valve controls signal array
Pi, wherein i=1,2,3 ... represent electronic expansion valve of indoor unit numbering, so as to realize control module such as outdoor unit control core
Piece is independently controlled to the aperture of electric expansion valve in each indoor set, so as to be opened according to different load set different targets
Degree, reduce the generation of part valve refrigerant sound；Also, by establishing electric expansion valve pressure corresponding to different model electric expansion valve
Difference-aperture-sound pressure level array Lpi, wherein i=A, B, C, D ... ..., represent the model or batch of electric expansion valve in indoor set
Code, these arrays Lpi is default in the control module, and the standard sound of the basic noise of indoor set is preset in the control module
Arbitrarily downgrade Lp0, so when each indoor set is using the electric expansion valve of different model or different batches, can realize each electric expansion valve
Independent optimized control, ensure electric expansion valve in whole indoor sets low noiseization control；In addition, increase most on control strategy
Small noise pattern, on hardware on each electric expansion valve relative set sound level meter to detect the sound pressure level of each electric expansion valve simultaneously
Fed back, when outer work condition and load change, based on sound level meter feedback signal, realize electric expansion valve with pressure difference and aperture
The closed loop low noiseization control of two dimensions, avoids part electric expansion valve from larger noise occur.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
- A kind of 1. low noise control method of electric expansion valve in multiple on-line system, it is characterised in that the multiple on-line system bag Include outdoor unit and multiple indoor sets, each indoor set includes electric expansion valve in the multiple indoor set, methods described including with Lower step：When the multiple on-line system enters heating standby pattern, the acoustic pressure of electric expansion valve in each indoor set is gathered in real time Level, and the sound pressure level of electric expansion valve in each indoor set is judged；If the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, the indoor set is judged There is noise exception in middle electric expansion valve, and obtains the model of electric expansion valve in the indoor set；According to the model of electric expansion valve in the indoor set call default electric expansion valve pressure difference-aperture-sound pressure level array with Multiple aperture controlling values are obtained, and electric expansion valve in the indoor set is controlled successively according to the multiple aperture controlling value To obtain multiple current sound pressure levels；Aperture desired value is obtained according to the multiple current sound pressure level, and according to the aperture desired value to electronics in the indoor set Expansion valve is controlled such that in the indoor set that electric expansion valve enters minimal noise pattern.
- 2. according to the method for claim 1, it is characterised in that the multiple aperture controlling value is that the default electronics is swollen Aperture corresponding to minimal sound pressure levels under each pressure difference in swollen valve pressure difference-aperture-sound pressure level array.
- 3. method according to claim 1 or 2, it is characterised in that described obtained according to the multiple current sound pressure level is opened Desired value is spent, is specifically included：Obtain the minimal sound pressure levels in the multiple current sound pressure level；When there is noise exception less than electric expansion valve in the indoor set in the minimal sound pressure levels in the multiple current sound pressure level Sound pressure level when, using aperture controlling value corresponding to the minimal sound pressure levels in the multiple current sound pressure level as the aperture target Value.
- 4. according to the method for claim 3, it is characterised in that described that aperture mesh is obtained according to the multiple current sound pressure level Scale value, in addition to：There is noise when the minimal sound pressure levels in the multiple current sound pressure level are more than or equal to electric expansion valve in the indoor set During sound pressure level when abnormal, using the initial opening value of electric expansion valve in the indoor set as the aperture desired value.
- 5. according to the method for claim 1, it is characterised in that if in any one indoor set electric expansion valve acoustic pressure Level is less than or equal to the default standard sound pressure level, then keeps the current aperture of electric expansion valve in the indoor set constant.
- A kind of 6. multiple on-line system, it is characterised in that including：Outdoor unit；Multiple indoor sets, each indoor set includes electric expansion valve in the multiple indoor set；Multiple sound level meters, each sound level meter correspondingly detects the acoustic pressure of electric expansion valve in each indoor set in the multiple sound level meter Level；Control module, the control module are used to gather each room in real time when the multiple on-line system enters heating standby pattern The sound pressure level of electric expansion valve in interior machine, and the sound pressure level of electric expansion valve in each indoor set is judged, wherein,If the sound pressure level of electric expansion valve is more than default standard sound pressure level in any one indoor set, the control module is then Judge that noise exception occurs in electric expansion valve in the indoor set, and obtain the model of electric expansion valve in the indoor set, Yi Jigen Call default electric expansion valve pressure difference-aperture-sound pressure level array more to obtain according to the model of electric expansion valve in the indoor set Individual aperture controlling value, and electric expansion valve in the indoor set is controlled successively according to the multiple aperture controlling value to obtain Multiple current sound pressure levels, and the control module obtain aperture desired value according to the multiple current sound pressure level, and according to institute State aperture desired value and electric expansion valve is made an uproar into minimum to be controlled such that in the indoor set to electric expansion valve in the indoor set Sound pattern.
- 7. multiple on-line system according to claim 6, it is characterised in that the multiple aperture controlling value is described default Aperture corresponding to minimal sound pressure levels under each pressure difference in electric expansion valve pressure difference-aperture-sound pressure level array.
- 8. the multiple on-line system according to claim 6 or 7, it is characterised in that the control module is further used for obtaining Minimal sound pressure levels in the multiple current sound pressure level, and the minimal sound pressure levels in the multiple current sound pressure level are less than the room During sound pressure level when noise exception occurs in electric expansion valve in interior machine, by the minimal sound pressure levels pair in the multiple current sound pressure level The aperture controlling value answered is as the aperture desired value.
- 9. multiple on-line system according to claim 8, it is characterised in that the minimum sound in the multiple current sound pressure level During sound pressure level when occurring noise exception more than or equal to electric expansion valve in the indoor set of arbitrarily downgrading, the control module is by the room The initial opening value of electric expansion valve is as the aperture desired value in interior machine.
- 10. multiple on-line system according to claim 6, it is characterised in that if electronic expansion in any one indoor set The sound pressure level of valve is less than or equal to the default standard sound pressure level, and the control module then keeps electronic expansion in the indoor set The current aperture of valve is constant.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105757891B (en) * | 2016-03-15 | 2018-07-10 | 广东美的暖通设备有限公司 | Multi-line system and its control method for heating indoor unit |
| CN107339780B (en) * | 2017-07-21 | 2021-03-02 | 广东美的暖通设备有限公司 | Control method and device for differential pressure of high-pressure side and low-pressure side of multi-connected air conditioner compressor and air conditioner |
| CN107576108B (en) * | 2017-08-01 | 2021-09-21 | 青岛海尔空调电子有限公司 | Multi-split air conditioner control method |
| CN108195047B (en) * | 2017-12-01 | 2020-08-18 | 青岛海尔空调电子有限公司 | Noise control method and controller of multi-connected air conditioning system |
| JP7275876B2 (en) * | 2019-06-07 | 2023-05-18 | 株式会社デンソー | refrigeration cycle equipment |
| 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 |
| CN110579039A (en) * | 2019-09-12 | 2019-12-17 | 青岛海信日立空调系统有限公司 | control method of refrigerant circulating system |
| CN110595004B (en) * | 2019-09-29 | 2021-06-18 | 宁波奥克斯电气股份有限公司 | Air conditioner noise reduction control method and system and air conditioner |
| CN110726225B (en) * | 2019-10-12 | 2021-01-05 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN115265011B (en) * | 2022-07-25 | 2023-11-14 | Tcl空调器(中山)有限公司 | Expansion valve control method and device, electronic equipment and storage medium |
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