CN104833041B - A kind of combined air conditioners pipeline balance method and combined air conditioners - Google Patents
A kind of combined air conditioners pipeline balance method and combined air conditioners Download PDFInfo
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- CN104833041B CN104833041B CN201410049272.0A CN201410049272A CN104833041B CN 104833041 B CN104833041 B CN 104833041B CN 201410049272 A CN201410049272 A CN 201410049272A CN 104833041 B CN104833041 B CN 104833041B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F2110/00—Control inputs relating to air properties
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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Abstract
The embodiment of the invention discloses a kind of combined air conditioners pipeline balance methods and combined air conditioners, method to include：Before combined air conditioners operating, the air pressure voltage value of air-conditioner outdoor unit and the air pressure voltage value of each air conditioner indoor unit are obtained；According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit and each air conditioner indoor unit, the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit is calculated separately；According to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, the difference in height of the air-conditioner outdoor unit and each air conditioner indoor unit is determined respectively；The cold medium flux of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit is adjusted according to each difference in height determined, so that pipeline balances when the combined air conditioners operate.The technical solution of the present embodiment can balance the pipeline of combined air conditioners, the energy goal pressure of adjust automatically outdoor unit and the cold medium flux of tail end air conditioner, ensure the refrigerating/heating effects equalizer of entire combined air conditioners.
Description
Technical field
The present invention relates to combined air conditioners technical fields, and in particular to a kind of combined air conditioners pipeline balance method and multi-joint sky
It adjusts.
Background technology
In recent years, multi-connected machine product is increasingly welcome by user, and multi-gang air-conditioner outdoor unit is more and more large-scale, with
And come to be a set of multi-line system can be increased with matched interior board number.In this way in actual installation, a set of multi-connected machine system
System mounting area bigger, the difference in height bigger of air-conditioner outdoor unit and air conditioner indoor unit.Difference in height increases, and can cause air-conditioner outdoor unit
There are pressure differences with the indoor unit pipeline refrigerant of end, at present for the control of loine pressure, are completed in air-conditioner outdoor unit；It is empty
Outdoor unit control system loine pressure is adjusted to reach best condensation effect in general；But when system pipeline is long
When, when refrigerant flows to system end, pressure can reduce, and cause interior mechanism cold/heating effect poor.
Current each air-conditioning producer releases not yet carries out what effect compensated automatically for the bigger tail end air conditioner of difference in height
Scheme, general way are that a dial-up is respectively provided on outdoor unit and indoor unit computer board, when for multi-connected machine installation, if hair
The pipeline of existing unit is longer, when difference in height is larger, is set, and goal pressure is provided, and increases cold medium flux.
This air-conditioner set larger to difference in height using toggle switch or other set-up modes carries out function setting
Method, setting is comparatively laborious, and is difficult to hold for the judgement of difference in height, and it is each can not fundamentally to solve combined air conditioners
The unbalanced problem of cold medium flux between indoor unit.
Invention content
In view of this, a kind of combined air conditioners pipeline balance method of offer of the embodiment of the present invention and combined air conditioners, more to solve
The unbalanced problem of cold medium flux between connection each indoor unit of air-conditioning.
The embodiment of the present invention uses following technical scheme：
In a first aspect, an embodiment of the present invention provides a kind of combined air conditioners pipeline balance methods, including：
Before combined air conditioners operating, the air pressure voltage value of air-conditioner outdoor unit and the air pressure voltage of each air conditioner indoor unit are obtained
Value；
According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit and each air conditioner indoor unit, calculate separately
The difference of air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit；
According to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, institute is determined respectively
State the difference in height of air-conditioner outdoor unit and each air conditioner indoor unit；
The refrigerant of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit is adjusted according to each difference in height determined
Flow, so that pipeline balances when the combined air conditioners operate.
Second aspect, the embodiment of the present invention additionally provide a kind of combined air conditioners, including control module, air-conditioner outdoor unit, until
A few air conditioner indoor unit and at least one electric expansion valve, wherein every air conditioner indoor unit corresponds to an electric expansion valve；
The control module is used for：
Before combined air conditioners operating, the air pressure of the air pressure voltage value and each air conditioner indoor unit of air-conditioner outdoor unit is obtained
Voltage value；
According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit and each air conditioner indoor unit, calculate separately
The difference of air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit；
According to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, institute is determined respectively
State the difference in height of air-conditioner outdoor unit and each air conditioner indoor unit；
According to each difference in height determined adjust the air-conditioner outdoor unit goal pressure and each air conditioner indoor unit it is corresponding
The aperture of electric expansion valve, so that pipeline balances when the combined air conditioners operate.
The advantageous effects of technical solution that the embodiment of the present invention proposes are：
The technical solution of the embodiment of the present invention is by before combined air conditioners operating, obtaining the air pressure of air-conditioner outdoor unit
The air pressure voltage value of voltage value and each air conditioner indoor unit, and then calculate separately between the air-conditioner outdoor unit and each air conditioner indoor unit
Air pressure voltage value difference, and then obtain the difference in height of the air-conditioner outdoor unit and each air conditioner indoor unit respectively, then basis
Each difference in height determined adjusts the cold medium flux of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit, so that described
Pipeline balances when combined air conditioners operate, and the energy goal pressure of adjust automatically outdoor unit and the cold medium flux of tail end air conditioner ensure whole
The refrigerating/heating effects equalizer of a combined air conditioners.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example without creative efforts, can also be implemented for those of ordinary skill in the art according to the present invention
The content of example and these attached drawings obtain other attached drawings.
Fig. 1 is the combined air conditioners pipeline balance method flow chart described in the specific embodiment of the invention one；
Fig. 2 is that pneumatic parameter flow is obtained in combined air conditioners pipeline balance method described in the specific embodiment of the invention two
Figure；
Fig. 3 is the control that pipeline balance is realized in combined air conditioners pipeline balance method described in the specific embodiment of the invention two
Flow chart；
Fig. 4 is the system structure diagram of the combined air conditioners described in the specific embodiment of the invention three；
Fig. 5 is the mounting structure schematic diagram of the combined air conditioners described in the specific embodiment of the invention three.
Specific implementation mode
For make present invention solves the technical problem that, the technical solution that uses and the technique effect that reaches it is clearer, below
The technical solution of the embodiment of the present invention will be described in further detail in conjunction with attached drawing, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
The every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
Embodiment one
Fig. 1 is the combined air conditioners pipeline balance method flow chart described in the present embodiment, and the present embodiment is applicable to multi-joint sky
The air-conditioner outdoor unit of tune and each air conditioner indoor unit the case where there are different differences in height, the realization of the present embodiment requires to obtain more
Join the air pressure voltage value of air-conditioner outdoor unit and each air conditioner indoor unit in air-conditioning, the method disclosed in the present embodiment can be by multi-joint sky
The control module of tune executes, wherein the control module can be deployed on air-conditioner outdoor unit, can also be deployed in air conditioner indoor unit
On, can be hardware device or software program, as shown in Figure 1, the combined air conditioners pipeline balance method packet described in the present embodiment
It includes：
S101, combined air conditioners operating before, obtain the gas of the air pressure voltage value and each air conditioner indoor unit of air-conditioner outdoor unit
Press voltage value.
Those skilled in the art it should be clear that, in order to avoid because the operating of complete machine fan causes air pressure change,
So as to cause obtain air pressure voltage value inaccuracy problem, the present embodiment require obtain air-conditioner outdoor unit air pressure voltage value and respectively
The step of air pressure voltage value of air conditioner indoor unit, obtains when multi-variable air conditioning unit being needed to power on not actuated.It is specific to obtain outside air conditioning chamber
The mode of the air pressure voltage value of machine and each air conditioner indoor unit is unlimited, is including but not limited to obtained by baroceptor.
S102, the air pressure voltage value according to the air pressure voltage value and each air conditioner indoor unit of the air-conditioner outdoor unit, point
The difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit is not calculated.
Calculate separately the difference of the air pressure voltage value of each air conditioner indoor unit and the air pressure voltage value of air-conditioner outdoor unit.
S103, according to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, respectively
Determine the difference in height of the air-conditioner outdoor unit and each air conditioner indoor unit.
The difference of the air pressure voltage value of each air conditioner indoor unit and the air pressure voltage value of air-conditioner outdoor unit, with each air conditioner indoor unit
There are correspondences with the difference of the height value of air-conditioner outdoor unit, the difference of air pressure voltage value can convert according to preset algorithm
At difference in height, obtained between each air conditioner indoor unit and air-conditioner outdoor unit by the difference of the air pressure voltage value acquired in step S102
Difference in height.
Such as：The absolute value of the air pressure voltage difference of air-conditioner outdoor unit and air conditioner indoor unit 1 is 0.2 volt, according to setting in advance
Fixed specific formulation, it can be calculated that the difference in height of air-conditioner outdoor unit and air conditioner indoor unit is 2 meters.
S104, the goal pressure that the air-conditioner outdoor unit is adjusted according to each difference in height for determining and each air conditioner indoor unit
Cold medium flux, so that pipeline balances when the combined air conditioners operate.
The goal pressure of air-conditioner outdoor unit can be different due to the difference of the number of air conditioner indoor unit, setting and environment temperature,
According to the difference in height of air-conditioner outdoor unit and each air conditioner indoor unit, adjustment is compensated to the target pressure of air-conditioner outdoor unit,
For example, the maximum difference of air-conditioner outdoor unit and any one air conditioner indoor unit is often more than 20 meters, just by the mesh of air-conditioner outdoor unit
Mark pressure adds 2 kilograms, while for the difference in height of air-conditioner outdoor unit and each air conditioner indoor unit, determines the cold of every air conditioner indoor unit
Matchmaker's flow ensures that the working effect of every air conditioner indoor unit is almost the same in the case of different height difference in this way, and
And without apparent decaying.
Such as having 5 air conditioner indoor unit in a set of multi-line system, air-conditioner outdoor unit can calculate and every air conditioning chamber
The height fall of interior machine is respectively 10 meters, 20 meters, 30 meters, 40 meters, 50 meters, in order to ensure unit heating effect, unit heating fortune
When turning, the maximum opening of electric expansion valve can be modified by air-conditioner outdoor unit on the basis of original maximum allowable aperture, number
Value is respectively -200 steps, and -150 steps, -100 steps, -50 steps, 0 step, doing so can reduce in the air conditioning chamber close apart from air-conditioner outdoor unit
The cold medium flux of machine increases the cold medium flux of tail end air conditioner indoor unit, achievees the purpose that counterbalance effect.
Each air conditioner indoor unit has been respectively mounted the flow-rate adjustment module for adjusting cold medium flux, the flow-rate adjustment mould
Block includes but not limited to one or more electric expansion valve.
The technical solution of the present embodiment is by before combined air conditioners operating, obtaining the air pressure voltage of air-conditioner outdoor unit
The air pressure voltage value of value and each air conditioner indoor unit, and then calculate separately the gas between the air-conditioner outdoor unit and each air conditioner indoor unit
The difference of voltage value is pressed, and then obtains the difference in height of the air-conditioner outdoor unit and each air conditioner indoor unit respectively, then according to determination
Each difference in height gone out adjusts the cold medium flux of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit, so that described multi-joint
Pipeline balances when operation of air conditioner, the energy goal pressure of adjust automatically outdoor unit and the cold medium flux of tail end air conditioner, ensures entire more
Join the refrigerating/heating effects equalizer of air-conditioning.
Embodiment two
Fig. 2 is that pneumatic parameter flow is obtained in combined air conditioners pipeline balance method described in the specific embodiment of the invention two
Figure, as shown in Fig. 2, the method for the acquisition pneumatic parameter described in the present embodiment includes：
S201, air-conditioner set power on.
S202, air pressure detection module detect atmospheric pressure.
Air pressure detection module described in the present embodiment includes being installed on the air pressure detection module of air-conditioner outdoor unit and being installed on
The air pressure detection module of each air conditioner indoor unit（Including but not limited to baroceptor）, by the gas for being installed on air-conditioner outdoor unit
The atmospheric pressure in space where pressing detection module to obtain air-conditioner outdoor unit is detected by being installed on the air pressure of air conditioner indoor unit respectively
The atmospheric pressure in space where module obtains each air conditioner indoor unit, Pressure monitoring module all turn the air pressure voltage value detected
It is changed to voltage value, for finally obtaining the difference in height between each air conditioner indoor unit and air-conditioner outdoor unit.
S203, it is communicated by UART or I2C, testing result is sent to air-conditioning internal machine plate/outdoor machine board for air conditioner.
In the present embodiment, air-conditioner outdoor unit passes through UART with the air pressure detection module for being installed on air-conditioner outdoor unit
(Universal Asynchronous Receiver/Transmitter universal asynchronous receiving-transmitting transmitters), or PHILIPS companies
The twin wire universal serial bus I2C of exploitation（Inter-Integrated Circuit）Standard is communicated, and is installed on outside air conditioning chamber
The air pressure voltage value of detection is sent to the air-conditioner outdoor unit by the air pressure detection module of machine, is installed on each of each air conditioner indoor unit
The air pressure voltage value of detection is sent to corresponding air conditioner indoor unit by air pressure detection module respectively.
Whether S204, acquisition are completed 20 times, if so then execute step S205, otherwise return to step S203.
Above-mentioned steps are repeated 20 times, it is certainly contemplated that the problem of arriving accuracy and collecting efficiency, specific repeated acquisition time
Number can be adjusted according to situation.
S205, computer board average to air pressure voltage value, and mean value is stored, while air pressure detection module and interior machine plate
Stop data interaction, terminates.
For influences such as the errors that reduces detection so that the air pressure voltage value acquired is more accurate, by each gas in previous step
The data of the detection of detection module are pressed to be averaged, averaged terminates the collecting work of air pressure detection module.
Fig. 3 is the control that pipeline balance is realized in combined air conditioners pipeline balance method described in the specific embodiment of the invention two
Flow chart, as shown in figure 3, the control method of the realization pipeline balance described in the present embodiment includes：
S301, air-conditioner outdoor unit get the air pressure voltage value of all air conditioner indoor unit.
In multi-gang air-conditioner, air-conditioner outdoor unit can be into row data communication with each air-conditioner outdoor unit（Including wire communication
Or wireless communication）, after each air conditioner indoor unit gets the average gas pressure voltage value of itself, average gas pressure voltage value is sent out respectively
Give air-conditioner outdoor unit.
S302, the air pressure voltage value difference for calculating air-conditioner outdoor unit and every air conditioner indoor unit.
The control module of combined air conditioners calculates separately the average gas pressure voltage value of air-conditioner outdoor unit and each air conditioner indoor unit
The air pressure voltage value difference of average gas pressure voltage value.
S303, go out air-conditioner outdoor unit difference in height corresponding with every air conditioner indoor unit according to air pressure voltage value mathematic interpolation.
The difference of the air pressure voltage value of each air conditioner indoor unit and the air pressure voltage value of air-conditioner outdoor unit, with each air conditioner indoor unit
There are correspondences with the difference of the height value of air-conditioner outdoor unit, and the control module of combined air conditioners can be according to preset algorithm, by gas
Piezoelectricity pressure value difference value is converted into difference in height, by air pressure voltage value difference acquired in step S302 obtain each air conditioner indoor unit with
Difference in height between air-conditioner outdoor unit.
Whether the maximum height difference of S304, air-conditioner outdoor unit and air conditioner indoor unit meet unit running requirements, if then holding
Row step S305, it is no to then follow the steps S307.
Judge whether the maximum value in the difference in height meets the running requirements of the combined air conditioners, is controlled if not meeting
The combined air conditioners shut down and send fault message.
S305, according to the difference in height of air-conditioner outdoor unit and every air conditioner indoor unit, convert, determine air-conditioner outdoor unit
Goal pressure.
The goal pressure of air-conditioner outdoor unit can be different due to the difference of the number of indoor unit, setting and environment temperature, according to
The difference in height of air-conditioner outdoor unit and each air conditioner indoor unit compensates adjustment to the target pressure of air-conditioner outdoor unit, for example,
The maximum difference of air-conditioner outdoor unit and any one air conditioner indoor unit is often more than 20 meters, just by the goal pressure of air-conditioner outdoor unit
Add 2kg, while for the difference in height of air-conditioner outdoor unit and each air conditioner indoor unit, determining the cold medium flux of every air conditioner indoor unit,
Ensure that the working effect of every air conditioner indoor unit is almost the same, and without bright in the case of different height difference in this way
Aobvious decaying.
Such as having 5 air conditioner indoor unit in a set of multi-line system, air-conditioner outdoor unit can calculate and every air conditioning chamber
The height fall of interior machine is respectively 10 meters, 20 meters, 30 meters, 40 meters, 50 meters, multi-joint in order to ensure multi-connected machine unit heating effect
When machine unit heating operation, air-conditioner outdoor unit can be by the maximum opening of electric expansion valve on the basis of original maximum allowable aperture
It is modified, numerical value is respectively -200 steps, and -150 steps, -100 steps, -50 steps, 0 step, doing so can reduce apart from air-conditioner outdoor unit
The cold medium flux of close air conditioner indoor unit increases the cold medium flux of tail end air conditioner indoor unit, achievees the purpose that counterbalance effect.
S306, according to the difference in height of air-conditioner outdoor unit and every air conditioner indoor unit, determined in air conditioning chamber by air-conditioner outdoor unit
The maximum electronic expansion valve opening of machine is sent to every air conditioner indoor unit by communication, and air conditioner indoor unit stores, and terminates.
Each air conditioner indoor unit has been respectively mounted flow-rate adjustment module, and the flow-rate adjustment module includes but not limited to one
Or more than one electric expansion valve.Include multiple electric expansion valves in the corresponding flow-rate adjustment module of each air conditioner indoor unit
In the case of, it is cold to adjust air conditioner indoor unit that the control module of combined air conditioners adjusts the aperture of multiple electric expansion valves one by one or simultaneously
The flow of matchmaker's outflow.
S307, shutdown, indicating fault terminate.
The control module of combined air conditioners controls the combined air conditioners and shuts down and send fault message.
Compared with embodiment one, embodiment adds in the difference in height for judging air-conditioner outdoor unit and each air conditioner indoor unit
Whether maximum value meets the step of running requirements of the combined air conditioners, in this judgement, if not meeting, controls described multi-joint
Air-conditioning shuts down and sends fault message.Technical solution described in the present embodiment, using baroceptor, passes through without artificial setting
The air pressure voltage value difference of detection air-conditioner outdoor unit and each air conditioner indoor unit is known automatically in air-conditioner outdoor unit and every air conditioning chamber
The difference in height of machine, then outdoor unit is according to difference in height, the goal pressure of adjust automatically outdoor unit and the refrigerant stream of tail end air conditioner
Amount, can guarantee the refrigerating/heating effects equalizer of entire air-conditioner set.
Embodiment three
Fig. 4 is the system structure diagram of the combined air conditioners described in the specific embodiment of the invention three, as shown in figure 4, this implementation
Multi-gang air conditioner described in example includes control module 401, air-conditioner outdoor unit 402, an at least air conditioner indoor unit 403 and
At least one electric expansion valve 404, wherein every air conditioner indoor unit 403 corresponds to an electric expansion valve 404；
The control module 401 is used for：
Before combined air conditioners operating, the air pressure voltage value and each air conditioner indoor unit 403 of air-conditioner outdoor unit 402 are obtained
Air pressure voltage value；
According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit 402 and each air conditioner indoor unit 403, divide
The difference of the air pressure voltage value between the air-conditioner outdoor unit 402 and each air conditioner indoor unit 403 is not calculated；
According to the difference of the air pressure voltage value between the air-conditioner outdoor unit 402 and each air conditioner indoor unit 403, respectively
Determine the difference in height of the air-conditioner outdoor unit 402 and each air conditioner indoor unit 403；
The goal pressure and each air conditioner indoor unit 403 of the air-conditioner outdoor unit 402 are adjusted according to each difference in height determined
The aperture of corresponding electric expansion valve 404, so that pipeline balances when the combined air conditioners operate.
Further, the control module 401 is additionally operable to：According to the air-conditioner outdoor unit 402 and each air conditioning chamber
The difference of air pressure voltage value between interior machine 403 determines the height of the air-conditioner outdoor unit 402 and each air conditioner indoor unit 403 respectively
After degree difference, the goal pressure of the air-conditioner outdoor unit 402 and each air conditioner indoor unit are being adjusted according to each difference in height determined
Before the aperture of 403 corresponding electric expansion valves 404, it is described more to judge whether the maximum value in each difference in height determined meets
Join the running requirements of air-conditioning；
When the maximum value in judging each difference in height determined meets the running requirements of the combined air conditioners, according to
Each difference in height determined adjust the air-conditioner outdoor unit 402 goal pressure and 403 corresponding electronics of each air conditioner indoor unit it is swollen
The aperture of swollen valve 404.
Further, the control module 401 is additionally operable to：Maximum value in each difference in height for judging to determine is not
When meeting the running requirements of the combined air conditioners, controls the combined air conditioners and shut down and send fault message.
Further, the combined air conditioners further include the air pressure detection module 406 being mounted on air-conditioner outdoor unit, are mounted on
Air pressure detection module 406 on each air conditioner indoor unit；The control module 401 is specifically used for：
After the combined air conditioners power on and before combined air conditioners operating, outside the air conditioning chamber that controls the combined air conditioners
The air pressure detection module 405 installed on machine 402 obtains the air pressure voltage value of the air-conditioner outdoor unit 402, and control is described multi-joint
The air pressure detection module 406 installed on each air conditioner indoor unit 403 of machine obtains the air pressure voltage value of each air conditioner indoor unit 403.
Further, the air pressure detection module 405 and the air conditioner indoor unit installed on the air-conditioner outdoor unit 402
The air pressure detection module 406 installed on 403 is baroceptor.
Fig. 5 is the mounting structure schematic diagram of the combined air conditioners described in the specific embodiment of the invention three, as shown in Figure 5, and existing
There is technology to compare, in the combined air conditioners described in the present embodiment, difference with the prior art essentially consists on hardware, outside air conditioning chamber
The air pressure detection module for usefully detecting air pressure is respectively installed on machine and each air conditioner indoor unit.
Combined air conditioners described in the technical solution of the present embodiment include control module, air-conditioner outdoor unit, at least an air-conditioning
Indoor unit and at least one electric expansion valve pass through the control wherein every air conditioner indoor unit corresponds to an electric expansion valve
Molding block obtains the air pressure voltage value of air-conditioner outdoor unit and the air pressure voltage of each air conditioner indoor unit before combined air conditioners operating
Value, and then the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit is calculated separately, and then obtain respectively
The difference in height of the air-conditioner outdoor unit and each air conditioner indoor unit is taken, the air conditioning chamber is then adjusted according to each difference in height determined
The cold medium flux of the goal pressure of outer machine and each air conditioner indoor unit, so that pipeline balances when the combined air conditioners operate, it can be automatic
The cold medium flux for adjusting the goal pressure and tail end air conditioner of outdoor unit, ensures the refrigerating/heating effects equalizer of entire combined air conditioners.
Above example provide technical solution in all or part of content can be realized by software programming, software
Program is stored in the storage medium that can be read, and storage medium is for example：Hard disk, CD in computer or floppy disk.
Note that above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of combined air conditioners pipeline balance method, which is characterized in that including：
Before combined air conditioners operating, the air pressure voltage value of air-conditioner outdoor unit and the air pressure voltage value of each air conditioner indoor unit are obtained；
According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit and each air conditioner indoor unit, calculate separately described
The difference of air pressure voltage value between air-conditioner outdoor unit and each air conditioner indoor unit；
According to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, the sky is determined respectively
Adjust the difference in height of outdoor unit and each air conditioner indoor unit；
The cold medium flux of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit is adjusted according to each difference in height determined,
So that pipeline balances when the combined air conditioners operating.
2. combined air conditioners pipeline balance method as described in claim 1, which is characterized in that described according to outside the air conditioning chamber
The difference of air pressure voltage value between machine and each air conditioner indoor unit determines in the air-conditioner outdoor unit and each air conditioning chamber respectively
After the step of difference in height of machine and each difference in height that the basis is determined adjust the air-conditioner outdoor unit goal pressure and
Further include before the step of cold medium flux of each air conditioner indoor unit：
Judge whether the maximum value in each difference in height determined meets the running requirements of the combined air conditioners；
Each difference in height that the basis is determined adjusts the refrigerant of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit
Flow includes：When the maximum value in judging each difference in height determined meets the running requirements of the combined air conditioners, root
The cold medium flux of the goal pressure and each air conditioner indoor unit of the air-conditioner outdoor unit is adjusted according to each difference in height determined.
3. combined air conditioners pipeline balance method as claimed in claim 2, which is characterized in that further comprise：
When the maximum value in judging each difference in height determined does not meet the running requirements of the combined air conditioners, institute is controlled
Combined air conditioners are stated to shut down and send fault message.
4. combined air conditioners pipeline balance method as described in claim 1, which is characterized in that operate it in the combined air conditioners
Before, obtain air-conditioner outdoor unit air pressure voltage value and each air conditioner indoor unit air pressure voltage value the step of specifically include：
After the combined air conditioners power on and before combined air conditioners operating, on the air-conditioner outdoor unit that controls the combined air conditioners
The air pressure detection module installed obtains the air pressure voltage value of the air-conditioner outdoor unit, controls each air conditioning chamber of the combined air conditioners
The air pressure detection module installed on interior machine obtains the air pressure voltage value of each air conditioner indoor unit.
5. combined air conditioners pipeline balance method as claimed in claim 4, which is characterized in that the air pressure detection module is air pressure
Sensor.
6. combined air conditioners pipeline balance method as described in claim 1, which is characterized in that each height that the basis is determined
Difference adjust the air-conditioner outdoor unit goal pressure and each air conditioner indoor unit cold medium flux the step of be specially：According to determining
Each difference in height adjust the aperture of the goal pressure of the air-conditioner outdoor unit and the electric expansion valve of each air conditioner indoor unit.
7. a kind of combined air conditioners, which is characterized in that including control module, air-conditioner outdoor unit, an at least air conditioner indoor unit and
At least one electric expansion valve, wherein every air conditioner indoor unit corresponds to an electric expansion valve；
The control module is used for：
Before combined air conditioners operating, the air pressure voltage value of air-conditioner outdoor unit and the air pressure voltage of each air conditioner indoor unit are obtained
Value；
According to the air pressure voltage value of the air pressure voltage value of the air-conditioner outdoor unit and each air conditioner indoor unit, calculate separately described
The difference of air pressure voltage value between air-conditioner outdoor unit and each air conditioner indoor unit；
According to the difference of the air pressure voltage value between the air-conditioner outdoor unit and each air conditioner indoor unit, the sky is determined respectively
Adjust the difference in height of outdoor unit and each air conditioner indoor unit；
The goal pressure and the corresponding electronics of each air conditioner indoor unit of the air-conditioner outdoor unit are adjusted according to each difference in height determined
The aperture of expansion valve, so that pipeline balances when the combined air conditioners operate.
8. combined air conditioners as claimed in claim 7, which is characterized in that the control module is additionally operable to：According to the air-conditioning
The difference of air pressure voltage value between outdoor unit and each air conditioner indoor unit determines the air-conditioner outdoor unit and each air-conditioning respectively
After the difference in height of indoor unit, the goal pressure of the air-conditioner outdoor unit and each air-conditioning are being adjusted according to each difference in height determined
Before the aperture of the corresponding electric expansion valve of indoor unit, it is described more to judge whether the maximum value in each difference in height determined meets
Join the running requirements of air-conditioning；
When the maximum value in judging each difference in height determined meets the running requirements of the combined air conditioners, according to determination
Each difference in height gone out adjusts the aperture of the goal pressure and the corresponding electric expansion valve of each air conditioner indoor unit of the air-conditioner outdoor unit.
9. combined air conditioners as claimed in claim 8, which is characterized in that the control module is additionally operable to：It is determined in judgement
When maximum value in each difference in height does not meet the running requirements of the combined air conditioners, controls the combined air conditioners and shut down concurrently
Send fault message.
10. combined air conditioners as claimed in claim 7, which is characterized in that the combined air conditioners further include being mounted on outside air conditioning chamber
Air pressure detection module on machine, the air pressure detection module being mounted on each air conditioner indoor unit；The control module is specifically used for：
After the combined air conditioners power on and before combined air conditioners operating, on the air-conditioner outdoor unit that controls the combined air conditioners
The air pressure detection module installed obtains the air pressure voltage value of the air-conditioner outdoor unit, controls each air conditioning chamber of the combined air conditioners
The air pressure detection module installed on interior machine obtains the air pressure voltage value of each air conditioner indoor unit.
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| CN107036233B (en) * | 2017-03-27 | 2020-10-20 | 青岛海尔空调电子有限公司 | Indoor and outdoor unit communication method and device of air conditioner multi-connected unit and air conditioner |
| JP6399137B1 (en) * | 2017-03-31 | 2018-10-03 | ダイキン工業株式会社 | Height difference setting system |
| CN108019892B (en) * | 2017-11-23 | 2020-11-20 | 青岛海尔空调电子有限公司 | Control method of multi-connected air conditioning system |
| CN108870689B (en) * | 2018-07-17 | 2020-01-07 | 珠海格力电器股份有限公司 | Pressure control method and system of air conditioning unit |
| WO2020066016A1 (en) * | 2018-09-28 | 2020-04-02 | 三菱電機株式会社 | Air conditioner |
| CN109899939B (en) * | 2019-03-18 | 2022-04-19 | 珠海格力电器股份有限公司 | Method and system for controlling stable operation of unit |
| CN110686373B (en) * | 2019-08-27 | 2021-02-12 | 珠海格力电器股份有限公司 | Control method of outdoor unit fan and air conditioner |
| CN111854112B (en) * | 2020-07-17 | 2021-06-29 | 广东美的暖通设备有限公司 | Air conditioning system, control method, and computer-readable storage medium |
| CN114076400B (en) * | 2020-08-21 | 2023-09-01 | 广东美的制冷设备有限公司 | Control method, equipment, storage medium and device for electronic expansion valve of air conditioner |
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