CN108224739A - The noise control method of multi-connected air conditioning system - Google Patents
The noise control method of multi-connected air conditioning system Download PDFInfo
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- CN108224739A CN108224739A CN201711251204.2A CN201711251204A CN108224739A CN 108224739 A CN108224739 A CN 108224739A CN 201711251204 A CN201711251204 A CN 201711251204A CN 108224739 A CN108224739 A CN 108224739A
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- indoor unit
- expansion valve
- conditioning system
- air conditioning
- aperture
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- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000004378 air conditioning Methods 0.000 title claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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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
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
Abstract
The present invention relates to air-conditioning technical fields, and in particular to a kind of noise control method of multi-connected air conditioning system.Present invention seek to address that existing solve the problems, such as that effect existing for the technical solution of the heating standby noise of indoor unit is poor using heavy caliber electric expansion valve is replaced.The noise control method of the present invention includes：When the operational mode of multi-connected air conditioning system is heating mode, the run time of heating mode is obtained；When the run time of heating mode is more than time threshold, by the aperture regulation of the expansion valve corresponding to the indoor unit that quantity is set in the indoor unit of standby mode to first object aperture, while the expansion valve intermittently starting corresponding to remaining indoor unit is controlled.By above-mentioned control method, the present invention can make the expansion valve corresponding to the indoor unit of setting quantity that first object aperture be kept to receive refrigerant, make remaining indoor unit intermittently starting, to reduce or eliminate noise, improve noise control effect.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to a kind of noise control method of multi-connected air conditioning system.
Background technology
In recent years, multi-connected air conditioning system is shown with its install convenient, refrigerating/heating effect small on facade influence
The advantages that work, is increasingly becoming the preferred solution that the collectives such as office building, market, apartment place carries out air conditioning.Multi-connected machine
Air-conditioning system, in order to avoid saving bit by bit for refrigerant, is generally in the electronics of the indoor unit of standby mode when being run with heating mode
Expansion valve can retain certain aperture (i.e. benchmark retains aperture) so that refrigerant participates in the cycle of system.But it is flowed in refrigerant
When, since the fan of heating indoor unit is inoperative, the flowing sound of refrigerant can be amplified, and then form noise, especially
In the room that bedroom etc. needs peace and quiet, user's rest is influenced, brings very bad usage experience.
In order to solve above-mentioned heating indoor unit it is standby when noise problem, the prior art mainly adopts the electronics of larger caliber
The scheme that expansion valve substitutes more small-bore expansion valve in former air conditioner indoor unit is solved.This scheme is by increasing expansion valve
Bore, the mode for changing expansion valve runner so that the flow velocity of refrigerant reduces, and then the noise that the flowing for reducing refrigerant generates.Though
Right this mode solves the noise problem that refrigerant flowing generates to a certain extent, but is also inevitably present certain lack
It falls into.First, the flowing sound of refrigerant can only be reduced by way of increasing electric expansion valve bore, changing runner, it can not be from
Fundamentally eliminate the flowing sound so that noise still exists.Secondly, increased to a certain extent using heavy caliber electric expansion valve
The cost of complete machine, for multi-connected air conditioning system, while replaces the electric expansion valve of more indoor units, multi-connected air conditioner
The cost of system can greatly increase.That is, existing treated using replacement heavy caliber electric expansion valve solution heating indoor unit
The technical solution of machine noise there are effect it is poor, of high cost the problem of.
Correspondingly, this field needs a kind of noise control method of new multi-connected air conditioning system to solve the above problems.
Invention content
It is existing using replacement heavy caliber electric expansion valve in order to solve in order to solve the above problem of the prior art
Come solve the problems, such as heating the standby noise of indoor unit technical solution existing for effect it is poor, of high cost, the present invention provides one kind
The noise control method of multi-connected air conditioning system, the multi-connected air conditioning system include outdoor unit and multiple indoor units, Mei Gesuo
It states indoor unit and is both provided with expansion valve, which is characterized in that the noise control method includes the following steps：
When the operational mode of the multi-connected air conditioning system is heating mode, when obtaining the operation of the heating mode
Between；
When the run time is more than time threshold, the indoor unit of quantity will be set in the indoor unit of standby mode
The aperture regulation of corresponding expansion valve is to first object aperture；Remaining in the indoor unit in standby mode is controlled simultaneously
Expansion valve intermittently starting corresponding to indoor unit.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, the first object aperture is big
The benchmark when indoor unit corresponding to the expansion valve is in standby mode retains aperture.
It, " will be in standby mode in the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system
The aperture regulation of the expansion valve corresponding to the indoor unit of quantity is set in indoor unit to first object aperture " the step of further wrap
It includes：
Obtain the quantity of the indoor unit in standby mode and the number of each indoor unit in standby mode；
Based on the quantity and described number, the indoor unit of the setting quantity is chosen；
By the aperture regulation of the expansion valve corresponding to the indoor unit of the setting quantity to first object aperture.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, " it is based on the quantity and institute
State a number, choose the indoor unit of the setting quantity " the step of further comprise：
According to the sequence that number is descending, the indoor unit of the quantity is ranked up；
Choose the indoor unit for arranging the forward setting quantity.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, when number is identical, according to
The address coding of indoor unit is ranked up.
It, " will be in standby mode in the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system
The aperture regulation of the expansion valve corresponding to the indoor unit of quantity is set in indoor unit to first object aperture " the step of every first
Setting time performs primary.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, " control is in standby mode
Indoor unit in expansion valve intermittently starting corresponding to remaining indoor unit " the step of further comprise：
Whether the expansion valve corresponding to remaining described indoor unit of detection closes, if so, obtaining remaining indoor unit
The shut-in time of expansion valve, and compared with the second setting time；
When the shut-in time being more than the second setting time, the expansion valve is controlled in third setting time with setting
Valve opening velocity open；
Wherein, the second setting time is more than third setting time.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, " expansion valve is being controlled
In third setting time with the Valve opening velocity of setting open " the step of after, the noise control method further includes：
When the aperture of the expansion valve reaches maximum setting aperture, the expansion valve is made to stop opening.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, second setting time
And/or the maximum setting aperture is determined based on the booting rate of load condensate of the multi-connected air conditioning system.
In the optimal technical scheme of the noise control method of above-mentioned multi-connected air conditioning system, the booting rate of load condensate is equal to
The ratio of total number of the indoor unit in open state and total number of the indoor unit of the multi-connected air conditioning system.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, noise control method includes：
When the operational mode of multi-connected air conditioning system is heating mode, the run time of heating mode is obtained；In the fortune of heating mode
When the row time is more than time threshold, by the expansion valve corresponding to the indoor unit that quantity is set in the indoor unit of standby mode
Aperture regulation is to first object aperture, to receive refrigerant；Remaining indoor unit in indoor unit of the control in standby mode simultaneously
Corresponding expansion valve intermittently starting, to reduce noise.Wherein, first object aperture is more than the interior corresponding to the expansion valve
Benchmark when machine is in standby mode retains aperture, set the indoor unit of quantity as in the indoor unit of standby mode number compared with
Big indoor unit.By above-mentioned noise control method, the present invention can be by the larger indoor unit institute of the number in standby mode
Corresponding expansion valve keeps larger aperture with the refrigerant of containment system, makes between the expansion valve corresponding to the smaller indoor unit of a number
It has a rest unlatching, i.e., is remained turned-off within most times, and only opened within the very small part time, to eliminate refrigerant at these
The noise that flowing generates in indoor unit.Since the larger indoor unit of number is usually mounted to larger room, such as office, meeting
Room, hall etc., and the smaller indoor unit of number is usually mounted to smaller room, such as study or bedroom, therefore above-mentioned control
Method can make the room at the smaller indoor place of number keep quite, and solve in the prior art using replacement heavy caliber electronics
Expansion valve is poor, of high cost to solve the problems, such as effect existing for the technical solution of the heating standby noise of indoor unit, improves user's body
It tests.Further, since the method for the present invention need not make the original structure of air-conditioning system during control change, therefore the present invention
Also a save complete machine cost.
Description of the drawings
With reference to the accompanying drawings come describe the present invention multi-connected air conditioning system noise control method.In attached drawing：
Fig. 1 is the flow diagram of the noise control method of the multi-connected air conditioning system of the present invention；
Fig. 2 is a kind of expansion made in the indoor unit in standby mode corresponding to the indoor unit of setting quantity of the present invention
The aperture regulation of valve to first object aperture method flow schematic diagram；
Fig. 3 is the method flow signal of the expansion valve intermittently starting corresponding to a kind of control remaining indoor unit of the present invention
Figure.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the technical principle of the present invention, it is not intended that limit the scope of the invention.
Firstly the need of explanation, for those of ordinary skills, multi-connected air conditioning system includes outdoor unit
And multiple indoor units with outdoor unit serial or parallel connection, outdoor unit heat exchanger, compressor, outdoor electromechanical is provided in outdoor unit
Sub- expansion valve and the control components such as chip are provided with the components such as indoor set heat exchanger, electronic expansion valve of indoor unit in indoor unit,
Refrigeration and heating principle of connection relation, air-conditioning system between above-mentioned component etc. are all known, herein without retouching in detail
It states.
To solve to solve the skill of the heating standby noise of indoor unit using heavy caliber electric expansion valve is replaced in the prior art
The problem of effect existing for art scheme is poor, of high cost, the present invention provides a kind of noise control method of multi-connected air conditioning system,
The noise control method can be based on the indoor unit in standby mode quantity and number, by making the room in standby mode
Electric expansion valve (hereinafter referred to as expansion valve) in interior machine corresponding to the big indoor unit of number opens larger aperture, makes a number small
Indoor unit corresponding to expansion valve keep the control mode that the most of the time closes, eliminate number it is small be in standby mode
The sound that refrigerant flowing generates in indoor unit, the indoor unit in standby mode for making a number larger receive more refrigerants.By
Be usually mounted to the smaller room such as bedroom, study in the small indoor unit of number, the big indoor unit of number be usually mounted to hall,
The larger room such as office, meeting room, therefore the present invention keeps targeted specifically the smaller room such as study or bedroom
It is quiet.
With reference first to Fig. 1, Fig. 1 is the flow diagram of the noise control method of the multi-connected air conditioning system of the present invention.
As shown in Figure 1, the noise control method of the multi-connected air conditioning system of the present invention mainly includes the following steps：
S100, when the operational mode of multi-connected air conditioning system is heating mode, obtain the run time of heating mode；Such as
The operational mode of multi-connected air conditioning system includes refrigeration mode, heating mode, air supply pattern and dehumidification mode, multi-connected air conditioner
System obtains current operational mode, and chip is controlled to be obtained by the timer inside air-conditioning by the control chip of outdoor unit
Air-conditioning is taken in the run time of heating mode.
S200, at runtime be more than time threshold when, will in the indoor unit of standby mode set quantity interior
The aperture regulation of expansion valve corresponding to machine is to first object aperture, to receive refrigerant；Control remaining indoor unit institute simultaneously
Corresponding expansion valve intermittently starting, so as to eliminate these indoor units it is standby when the noise that generates.For example, time threshold is 3min,
When the run time of heating mode is more than 3min, air-conditioning heating operation at this time has reached stable state, then will be in standby
Expansion valve in the indoor unit of state corresponding to the larger indoor unit of number opens larger aperture, controls remaining number smaller
Expansion valve corresponding to indoor unit often closes 20min, opens 1min, so recycles.Certainly, the setting of time threshold is not one one-tenth
Constant, those skilled in the art also are able to adjust it.If time threshold can also be 4min, 5min etc., as long as multiple air conditioner
After the operation of the time, heating operation should reach to be stablized adjusting system.
Preferably, first object aperture is more than the expansion corresponding to without using the indoor unit in standby mode during this method
The benchmark of valve retains aperture.For example, it is 480P (P is aperture unit pulse, similarly hereinafter) in expansion valve maximum opening and does not make
During with this method, the aperture that the expansion valve of standby indoor unit usually retains is 1/10 (48P) of maximum opening, and the of the present invention
One target aperture can be between 1/6 (80P) to 1/5 (96P) of expansion valve maximum opening, such as 88P.Certainly, first object is opened
Degree is not a kind of above-mentioned setting method, and those skilled in the art can be adjusted it based on specific application scenarios, only
Will the adjustment meet first object aperture be more than without using this method when the indoor unit in standby mode corresponding to expansion valve
Benchmark retain aperture condition.
Foregoing description can be seen that in a heating mode, by making a number in the indoor unit in standby mode smaller
Expansion valve corresponding to indoor unit is kept for the most of the time close that refrigerant is prevented to flow, and the indoor unit institute for making a number larger
Corresponding expansion valve opens larger aperture so that more refrigerants to be received to flow, noise control method of the invention can reduce or
The noise in room where eliminating the smaller indoor unit of a number, while reduce the accumulation journey of refrigerant in the indoor unit of expansion valve closing
Degree, and then the rooms such as bedroom or study is made to keep quite.
With reference to Fig. 2, Fig. 2 is right for a kind of indoor unit for making setting quantity in the indoor unit in standby mode of the present invention
The aperture regulation for the expansion valve answered to first object aperture method flow schematic diagram.
As shown in Fig. 2, in a kind of possible embodiment, " make a setting quantity in the indoor unit in standby mode
Indoor unit corresponding to expansion valve aperture regulation to first object aperture " the step of further comprise：
The number of S211, the quantity for obtaining the indoor unit in standby mode and each indoor unit in standby mode；
Such as by control chip obtain each indoor unit statistic be in standby mode indoor unit quantity；
S212, based on above-mentioned quantity and number, choose the indoor unit of setting quantity；In a kind of possibly choosing method,
The indoor unit of setting quantity can be chosen as follows：According to the sequence that number is descending, to above-mentioned quantity
Indoor unit is ranked up；Choose the indoor unit for arranging forward setting quantity；It wherein, can be according to interior when number is identical
The address coding of machine is ranked up；For example, when standby number of units is 2 to 5, the room of 1 number maximum is chosen according to the method described above
Interior machine；When standby number of units is 6 to 10, the indoor unit of 2 number maximums is chosen according to the method described above；Standby number of units is more than 10
When, according to the method described above choose 3 number maximums indoor unit；
It should explain, the address coding of indoor unit is the exclusive string number code of every indoor unit, it can be deposited
It is stored on the control chip of each indoor unit and can also can store acquired in the control chip of outdoor unit or directly
In on the control chip of outdoor unit, controlled coremaking piece is called；It should also explain, above-mentioned choosing method is used merely to illustrate
The principle of the present invention, it is not intended that in limiting the scope of the invention, those skilled in the art are had reason to above-mentioned selection side
Method carries out any type of adjustment, to adapt to more specifical application scenarios；
S213, the aperture regulation of expansion valve corresponding to the indoor unit of quantity will be set to first object aperture, it such as will be by
The aperture of expansion valve corresponding to the indoor unit of selection is adjusted to 88P.
Preferably, above-mentioned " making the aperture regulation of the expansion valve corresponding to the indoor unit of setting quantity to first object aperture "
Step carries out primary every the first setting time.It was such as carried out every 1 minute primary.It is of course also possible to per 2min, 3min or 5min
Carry out primary, the control accuracy more short more that this control method can be improved of the time setting of the isolation.
With reference to Fig. 3, Fig. 3 is the method stream of the expansion valve intermittently starting corresponding to a kind of control of the present invention remaining indoor unit
Journey schematic diagram.
As shown in figure 3, in a kind of possible embodiment, " expansion valve corresponding to remaining indoor unit is controlled in interval
The step of unlatching ", further comprises：
Whether S221, the expansion valve detected corresponding to remaining indoor unit close, if so, obtaining the expansion of remaining indoor unit
The shut-in time of valve, and compared with the second setting time, such as the second setting time is 20min, control chip detects remaining interior
Whether the expansion valve corresponding to machine closes, if having been switched off, when obtaining the shut-in time of the expansion valve of indoor unit, and will close
Between be compared with 20min；
S222, upon closing between be more than the second setting time when, control the expansion valve in third setting time to set
Fixed Valve opening velocity is opened；If third setting time is 1min, it is more than 20min for the shut-in time of expansion valve in comparison result
When, make expansion valve in 1min with jockey valve to 20P, then carry out valve opening to increase the Valve opening velocity of 20P every 5 seconds；Wherein,
Valve opening velocity setting, which is advantageous in that, to accumulate a certain amount of refrigerant, Jin Er in the aperture of expansion valve stops the time rising
The aperture of expansion valve continues to make refrigerant return abundant when increase, to reduce the noise of indoor unit generation.Certainly, third is set
Time and Valve opening velocity can be adjusted based on specific application scenarios, as third setting time can also be 0.5min or
2min, Valve opening velocity can also be every 10s increases 30P etc..
S223, when the aperture of expansion valve reaches maximum setting aperture, expansion valve is made to stop valve opening, as maximum opening is
150P, expansion valve stop valve opening when with the Valve opening velocity valve opening of setting to 150P；Wherein, maximum setting aperture can represent
Indoor unit is made not generate the maximum opening of the expansion valve of noise under above-mentioned control method.
Wherein, the second setting time is more than third setting time, and the purpose set in this way is to make expansion valve more
Time remains turned-off, to keep the peace and quiet in corresponding room.
Preferably, the second setting time and maximum setting aperture can the booting rate of load condensate based on multi-connected air conditioning system it is true
It is fixed.Wherein, in a kind of possible embodiment, booting rate of load condensate can be equal to total number of the indoor unit in open state
With the ratio of total number of the indoor unit with multi-connected air conditioning system, which is used for characterizing the indoor unit institute in open state
Load accounts for the ratio of the total load of multi-connected air conditioning system.Proportion is smaller, it was demonstrated that the indoor unit in standby mode
Quantity is more, and the refrigerant for being now in the expansion valve accumulation of closed state is also more, and more frequent unlatching is also just needed to be in and is closed
The expansion valve of closed state be emphasized that more frequent unlatching is in and close shape to make the refrigerant circulation of accumulation in time
The expansion valve of state is not meant to the generation of noise, when the refrigerant accumulation before expansion valve is enough, the flowing of refrigerant
Be not in the sound of flowing instead.
For example, when the rate of load condensate that is switched on is less than 25%, the second setting time can be set as 10min, maximum is set
Determine aperture and be set as 180P；Be switched on rate of load condensate be in 25% to 50% when, the second setting time can be set as 20min,
Maximum setting aperture is set as 150P；Be switched on rate of load condensate be more than 50% when, the second setting time can be set as 30min,
Maximum setting aperture is set as 120P.Third setting time can be set as based on actual noise control effect for 30s, 1min,
2min etc..
The control flow of the noise control method of the present invention is illustrated with a kind of possible example below.
Assuming that multi-connected air conditioning system includes 1 outdoor unit and 10 indoor units.Wherein 10 indoor units further comprise 2
The bedroom indoor unit that the parlor indoor unit and 8 numbers that a number is 3.0HP are 1.0HP.Under a kind of possible operating status,
The bedroom indoor unit for having 5 numbers to be 1.0HP is run with heating mode, remaining indoor unit keeps standby mode, then
After heating mode runs 3min, noise control method of the invention starts to perform.It is specific as follows：
1) indoor unit of setting quantity is chosen from the indoor unit of standby mode.Since standby number of units is 5,
According to aforementioned choosing method, the indoor unit of 1 number maximum is chosen from 5 indoor units in standby mode, it such as can be from
Address coding is chosen in the parlor indoor unit that two numbers are 3.0HP and ranks forward parlor indoor unit, and by the indoor unit institute
The aperture regulation of corresponding expansion valve is to 88P, and hereafter judgement per minute is adjusted once.
2) the second setting time of remaining indoor unit and maximum setting aperture are judged based on booting rate of load condensate.Be switched on rate of load condensate
=5HP/14HP=35.7%, therefore according to aforementioned setting method, the second setting time is set as 20min, maximum setting aperture
It is set as 150P.The expansion valve of remaining indoor unit of control chip controls is with every closing 20min as a result, and opening 1min, (third is set
Time) mode acted.Wherein, opening process is：The aperture of expansion valve is made to reach 20P first, later with every increasing in 5 seconds
The Valve opening velocity of 20P is added to carry out valve opening, until expansion valve opening reaches 150P and stops valve opening.
In addition, in order to increase the safety of multi-connected air conditioning system, prevent the air-conditioning system when using this control method from going out
The situation of existing refrigerant missing, in a kind of possible embodiment, noise control method of the invention can also set following step
Suddenly：
When any indoor unit is switched to standby mode by operating status, the control chip of outdoor unit makes the swollen of the indoor unit
Swollen valve is opened in the 4th setting time with the second target aperture, and after the 4th setting time is continued, by the shape of the indoor unit
State is switched to standby mode.For example, when a certain indoor unit is switched to standby mode by heating operation, the control chip of outdoor unit
The expansion valve corresponding to the indoor unit is forced to keep the aperture of 350P in 1min, so that the refrigerant in the indoor unit is in 1min
Interior abundant reflux avoids what the indoor unit closed that refrigerant caused by expansion valve accumulates when entering standby mode immediately from asking
Topic.After 1min, control chip makes the state of the outdoor unit be switched to standby mode, and the outdoor unit is made to participate in aforementioned noise control side
The judgement of method.
When the compressor exhaust temperature of outdoor unit is not less than the aperture of the expansion valve corresponding to threshold temperature or outdoor unit
When not less than threshold value aperture and continuing five setting times, the expansion valve corresponding to all standby indoor units is made to be set simultaneously the 6th
It is opened in fixing time with third target aperture.For example, when the compressor exhaust temperature of outdoor unit meet or exceed 100 DEG C or
When the aperture of expansion valve corresponding to outdoor unit meets or exceeds 400P and continues 1min, it was demonstrated that the coolant quantity of outdoor unit lacks
It loses, at this time opens the expansion valve corresponding to all standby indoor units to 88P simultaneously, saved bit by bit in these indoor unit pipelines to allow
Refrigerant flow back in time, the situation that refrigerant lacks is avoided to occur, improves the safety of air-conditioning system.
Certainly, the design parameter in above two control method is merely possible to example presentation, and those skilled in the art can
It is adjusted flexibly with being made according to practical application scenarios to it, to improve the security performance of air-conditioning system.
In conclusion using above-mentioned noise control method, the present invention can make when heating indoor unit is standby in standby
Expansion valve corresponding to the larger indoor unit of number keeps larger aperture to make with the refrigerant of containment system in the indoor unit of state
Expansion valve corresponding to the smaller indoor unit of number remains turned-off within most times, to eliminate refrigerant in these indoor units
The noise that interior flowing generates, ensures the peace and quiet in the rooms such as bedroom, study corresponding to these indoor units.And the process of adjusting need not
Change is made to the original structure of air-conditioning system, has saved complete machine cost.That is, the multi-connected air conditioner system by the present invention
The noise control method of system solves and solves the heating standby noise of indoor unit using heavy caliber expansion valve is replaced in the prior art
Technical solution existing for effect it is poor, of high cost the problem of, improve user experience.
So far, it has been combined preferred embodiment shown in the drawings and describes technical scheme of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make the relevant technologies feature equivalent change or replacement, these
Technical solution after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
1. a kind of noise control method of multi-connected air conditioning system, the multi-connected air conditioning system includes outdoor unit and multiple interiors
Machine, each indoor unit are both provided with expansion valve, which is characterized in that the noise control method includes the following steps：
When the operational mode of the multi-connected air conditioning system is heating mode, the run time of the heating mode is obtained；
It is when the run time is more than time threshold, the indoor unit institute that quantity is set in the indoor unit of standby mode is right
The aperture regulation for the expansion valve answered is to first object aperture；Control remaining in the indoor unit in standby mode indoor simultaneously
Expansion valve intermittently starting corresponding to machine.
2. the noise control method of multi-connected air conditioning system according to claim 1, which is characterized in that the first object
The benchmark when indoor unit that aperture is more than corresponding to the expansion valve is in standby mode retains aperture.
3. the noise control method of multi-connected air conditioning system according to claim 2, which is characterized in that " will be in standby
The aperture regulation of the expansion valve corresponding to the indoor unit of quantity is set in the indoor unit of state to first object aperture " the step of into
One step includes：
Obtain the quantity of the indoor unit in standby mode and the number of each indoor unit in standby mode；
Based on the quantity and described number, the indoor unit of the setting quantity is chosen；
By the aperture regulation of the expansion valve corresponding to the indoor unit of the setting quantity to first object aperture.
4. the noise control method of multi-connected air conditioning system according to claim 3, which is characterized in that " be based on the number
The step of amount and described number, indoor unit of the selection setting quantity ", further comprises：
According to the sequence that number is descending, the indoor unit of the quantity is ranked up；
Choose the indoor unit for arranging the forward setting quantity.
5. the noise control method of multi-connected air conditioning system according to claim 4, which is characterized in that identical in number
When, it is ranked up according to the address coding of indoor unit.
6. the noise control method of multi-connected air conditioning system according to claim 4, which is characterized in that " will be in standby
The aperture regulation of the expansion valve corresponding to the indoor unit of quantity is set in the indoor unit of state to first object aperture " the step of it is every
It is performed every the first setting time primary.
7. the noise control method of multi-connected air conditioning system according to any one of claim 1 to 6, which is characterized in that
The step of " the expansion valve intermittently starting in indoor unit of the control in standby mode corresponding to remaining indoor unit ", further comprises：
Whether the expansion valve corresponding to remaining described indoor unit of detection closes, if so, obtaining the expansion of remaining indoor unit
The shut-in time of valve, and compared with the second setting time；
When the shut-in time being more than the second setting time, the expansion valve opening with setting in third setting time is controlled
Valve speed is opened；
Wherein, the second setting time is more than third setting time.
8. the noise control method of multi-connected air conditioning system according to claim 7, which is characterized in that " described in control
Expansion valve in third setting time with the Valve opening velocity of setting open " the step of after, the noise control method further includes：
When the aperture of the expansion valve reaches maximum setting aperture, the expansion valve is made to stop opening.
9. the noise control method of multi-connected air conditioning system according to claim 8, which is characterized in that second setting
Time and/or the maximum setting aperture are determined based on the booting rate of load condensate of the multi-connected air conditioning system.
10. the noise control method of multi-connected air conditioning system according to claim 9, which is characterized in that the booting is negative
Lotus rate is equal to the ratio of total number of total number of the indoor unit in open state and the indoor unit of the multi-connected air conditioning system
Value.
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| CN201711251204.2A CN108224739B (en) | 2017-12-01 | 2017-12-01 | Noise control method of multi-connected air conditioning system |
| PCT/CN2018/088272 WO2019104964A1 (en) | 2017-12-01 | 2018-05-24 | Multi-connected air conditioning system noise control method |
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| CN201711251204.2A CN108224739B (en) | 2017-12-01 | 2017-12-01 | Noise control method of multi-connected air conditioning system |
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| CN108224739B (en) | 2020-08-18 |
| WO2019104964A1 (en) | 2019-06-06 |
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Effective date of registration: 20201106 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. |