CN108006909A - Control method for electronic expansion valve under multi-line system and its heating mode - Google Patents
Control method for electronic expansion valve under multi-line system and its heating mode Download PDFInfo
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Abstract
The invention discloses the control method for electronic expansion valve under a kind of multi-line system and its heating mode, the described method comprises the following steps：When there is the indoor unit in holding state in multiple indoor units, by the electronic expansion valve regulation of each standby indoor unit to initial opening；When there is the quantity for the indoor unit that can be needed to be more than 1 in multiple indoor units, the aperture of the electric expansion valve of standby indoor unit is adjusted in the middle portion temperature average value of indoor heat exchanger in the indoor unit that can be needed according to having, until the aperture of the electric expansion valve of standby indoor unit reaches the default standby aperture of maximum；When there is the quantity for the indoor unit that can be needed to be 1, the aperture of the electric expansion valve of standby indoor unit is adjusted in the middle portion temperature of indoor heat exchanger in the indoor unit that can be needed according to having, until the aperture of the electric expansion valve of standby indoor unit reaches the default standby aperture of maximum, so as to effectively avoid refrigerant or lubricating oil from assembling in standby indoor unit, the reliability of system operation is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, the electric expansion valve control under more particularly to a kind of multi-line system heating mode
Method processed and a kind of multi-line system.
Background technology
Multi-line system is usually that one or more outdoor unit passes through the multiple indoor units of pipe connection.In general, each room
Interior machine can match somebody with somebody an electric expansion valve, it can be achieved that the indoor unit individually controls, such as open and close and flow-rate adjustment, so as to fulfill whole
A multi-line system optimal " distribution according to need ".
When multi-line system is run with heating mode, the high pressure gaseous refrigerant come out from compressor first passes through interior
Heat exchanger (evaporator), enters back into electric expansion valve, when the indoor unit is in holding state (i.e. the indoor unit is not run), by
In temperature in room less than the temperature for flowing into evaporator so that part gaseous coolant and the lubricating oil by refrigerant carrying are gathered in nothing
The indoor unit (indoor unit for being in holding state) that can be needed is internal.If the refrigerant that is gathered in inside the incompetent indoor unit needed or
Chuck Steak is lubricated, then system capability can be caused to decline, or cause compressor to be burnt because lacking lubricating oil.
The content of the invention
It is contemplated that one of technical problem in above-mentioned technology is at least solved to a certain extent.For this reason, the present invention
First purpose be to propose the control method for electronic expansion valve under a kind of multi-line system heating mode, can be according to different works
Condition, is adjusted the aperture of the electric expansion valve of standby indoor unit, can effectively avoid refrigerant or lubricating oil in standby interior
Aggregation in machine, improves the reliability of system operation.
Second object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
Third object of the present invention is to propose a kind of multi-line system.
To reach above-mentioned purpose, the electricity under a kind of multi-line system heating mode that first aspect present invention embodiment proposes
Sub- expansion valve control method, the multi-line system include multiple indoor units, and each indoor unit includes indoor heat exchanger and electronics
Expansion valve, the described method comprises the following steps：, will be every when there is the indoor unit in holding state in the multiple indoor unit
The electronic expansion valve regulation of a standby indoor unit is to initial opening；Judge there is the number for the indoor unit that can be needed in the multiple indoor unit
Whether amount is more than 1；If the quantity for having the indoor unit that can be needed is more than 1, have described in acquisition indoor in the indoor unit that can be needed
The middle portion temperature average value of heat exchanger, and according to the middle portion temperature average value to the electric expansion valve of the standby indoor unit
Aperture is adjusted, until the aperture of the electric expansion valve of the standby indoor unit reaches the default standby aperture of maximum；If
The quantity for having the indoor unit that can be needed is 1, then the middle portion temperature for having indoor heat exchanger in the indoor unit that can be needed described in acquisition, and
The aperture of the electric expansion valve of the standby indoor unit is adjusted according to the middle portion temperature, until the standby indoor unit
The aperture of electric expansion valve reach the default standby aperture of maximum.
Control method for electronic expansion valve under multi-line system heating mode according to embodiments of the present invention, when multiple interiors
When there is the indoor unit in holding state in machine, by the electronic expansion valve regulation of each standby indoor unit to initial opening, and
Judge to have in multiple indoor units whether the quantity for the indoor unit that can be needed is more than 1, wherein, if the quantity for the indoor unit that can be needed is big
In 1, then the middle portion temperature average value of indoor heat exchanger in the indoor unit that has and can need is obtained, and treat according to middle portion temperature average value
The aperture of the electric expansion valve of machine indoor unit is adjusted, until the aperture of the electric expansion valve of standby indoor unit reaches default
Maximum standby aperture；If the quantity for the indoor unit that can be needed is 1, then obtain in the indoor unit that has and can need in indoor heat exchanger
Portion's temperature, and the aperture of the electric expansion valve of standby indoor unit is adjusted according to middle portion temperature, until standby indoor unit
The aperture of electric expansion valve reaches the default standby aperture of maximum.Thus, this method can be according to different operating modes, to standby interior
The aperture of the electric expansion valve of machine is adjusted, and can effectively avoid refrigerant or lubricating oil and assembles in standby indoor unit, improves
The reliability of system operation.
In addition, the electronic expansion valve controls side under the multi-line system heating mode that above-described embodiment proposes according to the present invention
Method can also have technical characteristic additional as follows：
According to one embodiment of present invention, the aperture of the electric expansion valve of the standby indoor unit and the middle portion temperature
Average value/middle portion temperature correlation.
According to one embodiment of present invention, it is swollen to the electronics of the standby indoor unit according to the middle portion temperature average value
The aperture of swollen valve is adjusted, including：Judge whether the middle portion temperature average value is more than the first default mean temperature；If institute
Middle portion temperature average value is stated more than the first default mean temperature, then by the aperture regulation of the electric expansion valve of the standby indoor unit
To the first default aperture, and continue to judge whether the middle portion temperature average value is more than the second default mean temperature, wherein, it is described
Second default mean temperature is more than the described first default mean temperature；If it is default flat that the middle portion temperature average value is more than second
Equal temperature, then by the aperture regulation of the electric expansion valve of the standby indoor unit to the second default aperture, and continue described in judgement
Whether middle portion temperature average value is more than the 3rd default mean temperature, wherein, the described 3rd default mean temperature is more than described second
Default mean temperature, the described second default aperture are more than the described first default aperture；And so on judge, until it is described will described in
The aperture regulation of the electric expansion valve of standby indoor unit is to the default standby aperture of maximum.
According to another embodiment of the invention, the electric expansion valve according to the middle portion temperature to the standby indoor unit
Aperture be adjusted, including：Judge whether the middle portion temperature is more than the first preset temperature；If the middle portion temperature is more than
First preset temperature, then by the aperture regulation of the electric expansion valve of the standby indoor unit to the first aperture threshold value, and continue to sentence
Whether the middle portion temperature that breaks is more than the second preset temperature, wherein, second preset temperature is more than first preset temperature；
If the middle portion temperature is more than the second preset temperature, by the aperture regulation of the electric expansion valve of the standby indoor unit to
Two aperture threshold values, and continue to judge whether the middle portion temperature is more than the 3rd preset temperature, wherein, the 3rd preset temperature is big
In second preset temperature, the second aperture threshold value is more than the first aperture threshold value；And so on judge, until described
By the aperture regulation of the electric expansion valve of the standby indoor unit to the default standby aperture of maximum.
According to one embodiment of present invention, the first aperture threshold value is less than or equal to the described first default aperture, described
Second aperture threshold value is less than or equal to the described second default aperture.
According to one embodiment of present invention, when the middle portion temperature average value is less than or equal to the first default mean temperature
When, control the electric expansion valve of each standby indoor unit to keep initial opening constant.
According to one embodiment of present invention, when the middle portion temperature is less than or equal to the first preset temperature, control is each
The electric expansion valve of standby indoor unit keeps initial opening constant.
According to one embodiment of present invention, the initial opening is true according to the exploitation pulse aperture of the electric expansion valve
It is fixed.
According to one embodiment of present invention, the default standby aperture of maximum is less than or equal to the electric expansion valve
/ 5th of maximum opening.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter, is stored thereon with computer program, which realizes when being executed by processor under above-mentioned multi-line system heating mode
Control method for electronic expansion valve.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, is heated by performing above-mentioned multi-line system
Control method for electronic expansion valve under pattern, can according to different operating modes, to the aperture of the electric expansion valve of standby indoor unit into
Row is adjusted, and be can effectively avoid refrigerant or lubricating oil and is assembled in standby indoor unit, improves the reliability of system operation.
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of multi-line system, the multi-connected machine system
System includes multiple indoor units, and each indoor unit includes indoor heat exchanger and electric expansion valve, and the multi-line system, which further includes, deposits
Reservoir, processor and the control program for being stored in the multi-line system that can be run on the memory and on the processor,
The control program of the multi-line system realizes the electricity under above-mentioned multi-line system heating mode when being performed by the processor
The step of sub- expansion valve control method.
The multi-line system of the embodiment of the present invention, passes through the electric expansion valve control under above-mentioned multi-line system heating mode
Method processed, can be adjusted the aperture of the electric expansion valve of standby indoor unit, can effectively avoid refrigerant according to different operating modes
Or lubricating oil is assembled in standby indoor unit, the reliability of system operation is improved.
Brief description of the drawings
Fig. 1 is the structure diagram of multi-line system according to an embodiment of the invention；
Fig. 2 is the flow of the control method for electronic expansion valve under multi-line system heating mode according to embodiments of the present invention
Figure.
Embodiment
The embodiment of the present invention is 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 has the function of same or like element.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.
It is swollen to describe the electronics under the multi-line system heating mode proposed according to embodiments of the present invention below in conjunction with the accompanying drawings
Swollen valve control method and multi-line system.
In an embodiment of the present invention, multi-line system may include multiple indoor units, and each indoor unit may include that interior is changed
Hot device and electric expansion valve.
Specifically, by taking the multi-line system shown in Fig. 1 as an example, as shown in Figure 1, multi-line system may include outdoor unit and more
A indoor unit, multiple indoor units may include the first indoor unit 210 and the second indoor unit 220, wherein, the first indoor unit 210 and
Two indoor units 220 may each comprise electric expansion valve, filter, indoor heat exchanger, distributor, capillary and indoor fan, with
Exemplified by two indoor units 220, the second indoor unit 220 may include electric expansion valve 221, filter 222, indoor heat exchanger 223, distribution
Device 224, capillary 225 and indoor fan 226.Outdoor unit 100 may include compressor 110 and four-way valve 120.
When multi-line system is run with heating mode, the gaseous coolant of low-temp low-pressure becomes after the compression of compressor 110
Into the gaseous coolant of high temperature and pressure, by four-way valve 120 and connecting tube, the first indoor unit 210 and second Room are then separately flowed into
Interior machine 220, by taking the second indoor unit 220 as an example.High pressure gaseous refrigerant flows into indoor heat exchanger 223, indoors wind turbine 226
The lower enhanced heat exchange of effect, becomes the liquid refrigerants of high temperature and pressure, by each road capillary 225 and distributor 224, filter 222
Afterwards, compressor 110 is returned to after adjusting flow by electronic expansion valve of indoor unit 221.
Wherein, the high pressure gaseous refrigerant come out from compressor 110 first passes through indoor heat exchanger (evaporator), enters back into
Electric expansion valve, when the indoor unit is in holding state (i.e. the indoor unit is not run), due in room temperature less than flowing into
The temperature of evaporator so that part gaseous coolant and the lubricating oil by refrigerant carrying are gathered in the incompetent indoor unit needed and (are in and treat
The indoor unit of machine state) it is internal.If the refrigerant or lubrication Chuck Steak that are gathered in inside the incompetent indoor unit needed, can cause
System capability declines, or causes compressor to be burnt because lacking lubricating oil.
In correlation technique, under heating mode, the aperture of the electric expansion valve in indoor unit of the control in holding state is
One fixed value, and in order to ensure under any operating mode refrigerant or lubricating oil will not be gathered in standby evaporator
Portion, the fixed value are typically chosen larger, do not only result in wasted heat so, influence the ability and efficiency of system, and electronics is swollen
The aperture of swollen valve is larger so that the flow velocity of refrigerant is very fast, causes the noise that refrigerant flows larger, the use for influencing air-conditioning is comfortable
Property.
To solve the above problems, the embodiment of the present invention proposes the electronic expansion under a kind of multi-line system heating mode
Valve control method, can be adjusted the aperture of the electric expansion valve of standby indoor unit, can effectively avoid according to different operating modes
Refrigerant or lubricating oil are assembled in standby indoor unit, improve the reliability of system operation, while reduce energy dissipation, reduce
The refrigerant hydrodynamic noise of heating standby, improves the comfort of air-conditioning.
Fig. 2 is the flow of the control method for electronic expansion valve under multi-line system heating mode according to embodiments of the present invention
Figure.
As shown in Fig. 2, the control method for electronic expansion valve under the multi-line system heating mode of the embodiment of the present invention can wrap
Include following steps：
S1, it is when there is the indoor unit in holding state in multiple indoor units, the electronics of each standby indoor unit is swollen
Swollen valve regulation is to initial opening.
In an embodiment of the present invention, initial opening can be determined according to the exploitation pulse aperture of electric expansion valve.For example, just
Beginning aperture is between the bound of exploitation pulse, and close upper limit aperture (developing the higher value in pulse).
S2, judges to have in multiple indoor units whether the quantity for the indoor unit that can be needed is more than 1.
S3, if the quantity for the indoor unit that can be needed is more than 1, then obtains in the indoor unit that has and can need in indoor heat exchanger
Portion's temperature averages, and the aperture of the electric expansion valve of standby indoor unit is adjusted according to middle portion temperature average value, until
The aperture of the electric expansion valve of standby indoor unit reaches the default standby aperture of maximum.Wherein, the default standby aperture of maximum is small
In 1/5th of the maximum opening equal to electric expansion valve, the maximum opening of electric expansion valve during system stable operation by permitting
Perhaps the maximum opening of electric expansion valve.
In an embodiment of the present invention, the aperture of the electric expansion valve of standby indoor unit and middle portion temperature average value are in positive
Pass relation.It is, middle portion temperature average value is bigger, the aperture of the electric expansion valve of standby indoor unit is bigger, and middle portion temperature is put down
Average is smaller, and the aperture of the electric expansion valve of standby indoor unit is smaller.
According to one embodiment of present invention, the opening to the electric expansion valve of standby indoor unit according to middle portion temperature average value
Degree is adjusted, including：Judge whether middle portion temperature average value is more than the first default mean temperature, if middle portion temperature average value
Mean temperature is preset more than first, then by the aperture regulation of the electric expansion valve of standby indoor unit to the first default aperture, and after
It is continuous to judge whether middle portion temperature average value is more than the second default mean temperature, if middle portion temperature average value is default more than second flat
Equal temperature, then by the aperture regulation of the electric expansion valve of standby indoor unit to the second default aperture, and continue to judge middle portion temperature
Whether average value is more than the 3rd default mean temperature, and so on judge, until opening the electric expansion valve of standby indoor unit
Degree is adjusted to the default standby aperture of maximum.
Wherein, the second default mean temperature is more than the first default mean temperature, and it is pre- that the 3rd default mean temperature is more than second
If mean temperature, the second default aperture is more than the first default aperture, the first default mean temperature, the second default mean temperature, the
Three default mean temperatures, the first default aperture and the second default aperture can be demarcated according to actual conditions.
According to one embodiment of present invention, when middle part temperature averages are less than or equal to the first default mean temperature, control
The electric expansion valve of each standby indoor unit keeps initial opening constant.
Specifically, when multi-line system is run with heating mode, first judge to whether there is to be in multiple indoor units to treat
The indoor unit (indoor unit for not receiving power-on instruction) of machine state, if it does not exist, then according to normal control logic pair
Multi-line system is controlled, if there is the indoor unit in holding state, then first by each in the interior of holding state
The aperture regulation of the electronic expansion of machine to initial opening Y0, and by have can need indoor unit electric expansion valve aperture regulation
To initial opening X.Since the aperture of the electric expansion valve of standby indoor unit (can be according to the quantity for having the indoor unit that can be needed
The quantity of the indoor unit of operating status) adjust to different apertures, so needing to obtain the quantity for having the indoor unit that can be needed.
When the quantity for having the indoor unit that can be needed is more than 1, by the room for being arranged on each indoor unit in operating status
Temperature sensor in the middle part of interior heat exchanger obtains middle portion temperature in real time, and then asking for middle portion temperature to the middle portion temperature of acquisition is averaged
Value, to be used as the foundation for adjusting electric expansion valve.The aperture of the electric expansion valve of standby indoor unit can be averaged with middle portion temperature
The increase of value and increase, reduced with the reduction of middle portion temperature average value.
When middle part temperature averages are less than or equal to the first default mean temperature, control the electronics of each standby indoor unit swollen
Swollen valve keeps initial opening constant.When middle part temperature averages are more than the first default mean temperature, by the electricity of standby indoor unit
Whether the aperture (initial opening) of sub- expansion valve is tuned up to the first default aperture, and continue to judge middle portion temperature average value more than the
Two default mean temperatures, it is if middle portion temperature average value is more than the second default mean temperature, the electronics of standby indoor unit is swollen
Whether the aperture (first default aperture) of swollen valve is tuned up to the second default aperture, and continue to judge middle portion temperature average value more than the
Three default mean temperatures ..., and so on judge, until by the aperture regulation of the electric expansion valve of standby indoor unit to default
Maximum standby aperture.
During the aperture of the electric expansion valve of standby indoor unit is adjusted, if middle portion temperature average value drops
Low, then the aperture of the electric expansion valve of standby indoor unit can also be turned down.For example, when standby indoor unit electric expansion valve it is current
When aperture is the 3rd default aperture, if middle portion temperature average value is less than the 3rd default mean temperature and is preset more than second flat
Equal temperature, then turn the current aperture of the electric expansion valve of standby indoor unit to the second default aperture, if middle portion temperature is put down down
Average is less than the second default mean temperature and more than the first default mean temperature, then by the electric expansion valve of standby indoor unit
Current aperture is turned down to the first default aperture.
To sum up, the control method for electronic expansion valve under the multi-line system heating mode of the embodiment of the present invention, can have
Can need indoor unit quantity it is more when, according to have can need indoor unit in indoor heat exchanger middle portion temperature average value, treat
The aperture of the electric expansion valve of machine indoor unit is adjusted, and on the premise of system reliability service is ensured, makes standby indoor unit
The aperture of electric expansion valve is minimum, reduces unnecessary energy waste, while reduce the flowing of refrigerant in standby indoor unit
Noise, improves user experience.
S4, if the quantity for the indoor unit that can be needed is 1, then obtains the middle part of indoor heat exchanger in the indoor unit that has and can need
Temperature, and the aperture of the electric expansion valve of standby indoor unit is adjusted according to middle portion temperature, until the electricity of standby indoor unit
The aperture of sub- expansion valve reaches the default standby aperture of maximum.In an embodiment of the present invention, the electronic expansion of standby indoor unit
The aperture of valve and middle portion temperature correlation.It is, middle portion temperature is bigger, the electric expansion valve of standby indoor unit is opened
Degree is bigger, and middle portion temperature is smaller, and the aperture of the electric expansion valve of standby indoor unit is smaller.
According to another embodiment of the invention, according to middle portion temperature to the aperture of the electric expansion valve of standby indoor unit into
Row is adjusted, including：Judge whether middle portion temperature is more than the first preset temperature, if middle portion temperature is more than the first preset temperature,
By the aperture regulation of the electric expansion valve of standby indoor unit to the first aperture threshold value, and continue to judge whether middle portion temperature is more than the
Two preset temperatures, if middle portion temperature is more than the second preset temperature, by the aperture regulation of the electric expansion valve of standby indoor unit
To the second aperture threshold value, and continue to judge whether middle portion temperature is more than the 3rd preset temperature, and so on judge, until will be standby
The aperture regulation of the electric expansion valve of indoor unit is to the default standby aperture of maximum.
Wherein, the second preset temperature is more than the first preset temperature, and the 3rd preset temperature is more than the second preset temperature, and second opens
Degree threshold value is more than the first aperture threshold value, the first preset temperature, the second preset temperature, the 3rd preset temperature, the first aperture threshold value and
Second aperture threshold value can be demarcated according to actual conditions.
According to one embodiment of present invention, the first aperture threshold value is less than or equal to the first default aperture, the second aperture threshold value
Less than or equal to the second default aperture.That is, when there was only the operation of indoor unit in multi-line system standby indoor unit electricity
The aperture of sub- expansion valve is less than or equal to the aperture of the electric expansion valve of standby indoor unit when multiple indoor units are run.
According to one embodiment of present invention, when middle portion temperature is less than or equal to the first preset temperature, each standby room of control
The electric expansion valve of interior machine keeps initial opening constant.
Specifically, when there is the quantity for the indoor unit that can be needed to be 1, the room of the indoor unit by being set at operating status
Temperature sensor in the middle part of interior heat exchanger obtains middle portion temperature in real time, to be used as the foundation for adjusting electric expansion valve.Standby interior
The aperture of the electric expansion valve of machine can increase with the increase of middle portion temperature, be reduced with the reduction of middle portion temperature.For example,
When middle portion temperature is less than or equal to the first preset temperature, the electric expansion valve of each standby indoor unit is controlled to keep initial opening not
Become.When middle portion temperature is more than the first preset temperature, the aperture (initial opening) of the electric expansion valve of standby indoor unit is tuned up
To the first aperture threshold value, and continue to judge whether middle portion temperature is more than the second preset temperature, if middle portion temperature is pre- more than second
If temperature, then the aperture (the first aperture threshold value) of the electric expansion valve of standby indoor unit is tuned up to the second aperture threshold value, and after
It is continuous to judge whether middle portion temperature is more than the 3rd preset temperature ..., and so on judgement, up to by the electronic expansion of standby indoor unit
The aperture regulation of valve is to the default standby aperture of maximum.
During the aperture of the electric expansion valve of standby indoor unit is adjusted, if middle portion temperature reduces,
The aperture of the electric expansion valve of standby indoor unit can also be turned down.For example, the current aperture of the electric expansion valve when standby indoor unit
For the 3rd aperture threshold value when, if middle portion temperature, which is less than, the 3rd preset temperature and is more than the second preset temperature, by standby interior
The current aperture of the electric expansion valve of machine is turned down to the second aperture threshold value, if middle portion temperature is less than the second preset temperature and big
In the first preset temperature, then the current aperture of the electric expansion valve of standby indoor unit is turned down to the first aperture threshold value.
To sum up, the control method for electronic expansion valve under the multi-line system heating mode of the embodiment of the present invention, can have
Can need indoor unit quantity be 1 when, according to have can need indoor unit in indoor heat exchanger middle portion temperature, to standby indoor unit
The aperture of electric expansion valve be adjusted, on the premise of system reliability service is ensured, make the electronic expansion of standby indoor unit
The aperture of valve is minimum, reduces unnecessary energy waste, while reduces the hydrodynamic noise of refrigerant in standby indoor unit, improves
User experience.
From above-mentioned two embodiment, the electronic expansion valve controls side under multi-line system heating mode of the invention
Method, according to different operating modes, can automatically adjust the aperture of the electric expansion valve of standby indoor unit, meet system reliability
Under the premise of, the minimum aperture of the electric expansion valve of standby indoor unit is realized, so as to reduce energy dissipation, while reduces and treats
Refrigerant hydrodynamic noise in machine indoor unit, improves user experience.
In conclusion the control method for electronic expansion valve under multi-line system heating mode according to embodiments of the present invention,
When there is the indoor unit in holding state in multiple indoor units, by the electronic expansion valve regulation of each standby indoor unit to first
Beginning aperture, and judge to have in multiple indoor units whether the quantity for the indoor unit that can be needed is more than 1, wherein, if the interior that can be needed
The quantity of machine is more than 1, then obtains the middle portion temperature average value of indoor heat exchanger in the indoor unit that has and can need, and according to middle portion temperature
The aperture of the electric expansion valve of standby indoor unit is adjusted in average value, until the aperture of the electric expansion valve of standby indoor unit
Reach the default standby aperture of maximum；If the quantity for the indoor unit that can be needed is 1, then obtain indoor in the indoor unit that has and can need
The middle portion temperature of heat exchanger, and the aperture of the electric expansion valve of standby indoor unit is adjusted according to middle portion temperature, until treating
The aperture of the electric expansion valve of machine indoor unit reaches the default standby aperture of maximum.Thus, this method can according to different operating modes,
The aperture of the electric expansion valve of standby indoor unit is adjusted, can effectively avoid refrigerant or lubricating oil in standby indoor unit
Aggregation, improves the reliability of system operation.
In addition, the embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, it is stored thereon with
Computer program, the program realize the electronic expansion valve controls under above-mentioned multi-line system heating mode when being executed by processor
Method.
The non-transitorycomputer readable storage medium of the embodiment of the present invention, is heated by performing above-mentioned multi-line system
Control method for electronic expansion valve under pattern, can according to different operating modes, to the aperture of the electric expansion valve of standby indoor unit into
Row is adjusted, and be can effectively avoid refrigerant or lubricating oil and is assembled in standby indoor unit, improves the reliability of system operation.
In addition, the embodiment of the present invention also proposed a kind of multi-line system, the multi-line system includes multiple interiors
Machine, each indoor unit include indoor heat exchanger and electric expansion valve, and the multi-line system further includes memory, processor and deposits
The control program for the multi-line system that can be run on the memory and on the processor is stored up, the multi-line system
Control program realizes the control method for electronic expansion valve under above-mentioned multi-line system heating mode when being performed by the processor
The step of.
The multi-line system of the embodiment of the present invention, passes through the electric expansion valve control under above-mentioned multi-line system heating mode
Method processed, can be adjusted the aperture of the electric expansion valve of standby indoor unit, can effectively avoid refrigerant according to different operating modes
Or lubricating oil is assembled in standby indoor unit, the reliability of system operation is improved.
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 of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area
Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature
Close and combine.
In addition, term " first ", " second " are only used for description 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 present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used for realization custom logic function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic at the same time in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Connecting portion (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can be for example by carrying out optical scanner to paper or other media, then into edlin, interpretation or if necessary with it
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware with another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized：With the logic gates for realizing logic function to data-signal from
Logic circuit is dissipated, the application-specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that relevant hardware can be instructed to complete by program, the program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, those of ordinary skill in the art can be changed above-described embodiment, change, replace and become within the scope of the invention
Type.
In the description of the present 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 ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship, 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 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 be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
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.
Although the embodiment of the present invention has 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, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (11)
- A kind of 1. control method for electronic expansion valve under multi-line system heating mode, it is characterised in that the multi-line system Including multiple indoor units, each indoor unit includes indoor heat exchanger and electric expansion valve, the described method comprises the following steps：When there is the indoor unit in holding state in the multiple indoor unit, by the electric expansion valve of each standby indoor unit Adjust to initial opening；Judge to have in the multiple indoor unit whether the quantity for the indoor unit that can be needed is more than 1；If the quantity for having the indoor unit that can be needed is more than 1, there is indoor heat exchanger in the indoor unit that can be needed described in acquisition Middle portion temperature average value, and the aperture of the electric expansion valve of the standby indoor unit is carried out according to the middle portion temperature average value Adjust, until the aperture of the electric expansion valve of the standby indoor unit reaches the default standby aperture of maximum；If the quantity for having the indoor unit that can be needed is 1, have described in acquisition in the indoor unit that can be needed in indoor heat exchanger Portion's temperature, and the aperture of the electric expansion valve of the standby indoor unit is adjusted according to the middle portion temperature, until described The aperture of the electric expansion valve of standby indoor unit reaches the default standby aperture of maximum.
- 2. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 1, it is characterised in that institute State the aperture of the electric expansion valve of standby indoor unit and the middle portion temperature average value/middle portion temperature correlation.
- 3. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 1 or 2, its feature exist In, the aperture of the electric expansion valve of the standby indoor unit is adjusted according to the middle portion temperature average value, including：Judge whether the middle portion temperature average value is more than the first default mean temperature；If the middle portion temperature average value is more than the first default mean temperature, by the electric expansion valve of the standby indoor unit Aperture regulation to the first default aperture, and continue to judge whether the middle portion temperature average value is more than the second default average temperature Degree, wherein, the described second default mean temperature is more than the described first default mean temperature；If the middle portion temperature average value is more than the second default mean temperature, by the electric expansion valve of the standby indoor unit Aperture regulation to the second default aperture, and continue to judge whether the middle portion temperature average value is more than the 3rd default average temperature Degree, wherein, the described 3rd default mean temperature is more than the described second default mean temperature, and the described second default aperture is more than described First default aperture；And so on judge, until aperture regulation to the default maximum of the electric expansion valve by the standby indoor unit is treated Machine aperture.
- 4. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 3, it is characterised in that root The aperture of the electric expansion valve of the standby indoor unit is adjusted according to the middle portion temperature, including：Judge whether the middle portion temperature is more than the first preset temperature；If the middle portion temperature is more than the first preset temperature, by the aperture regulation of the electric expansion valve of the standby indoor unit To the first aperture threshold value, and continue to judge whether the middle portion temperature is more than the second preset temperature, wherein, the described second default temperature Degree is more than first preset temperature；If the middle portion temperature is more than the second preset temperature, by the aperture regulation of the electric expansion valve of the standby indoor unit To the second aperture threshold value, and continue to judge whether the middle portion temperature is more than the 3rd preset temperature, wherein, the described 3rd default temperature Degree is more than second preset temperature, and the second aperture threshold value is more than the first aperture threshold value；And so on judge, until aperture regulation to the default maximum of the electric expansion valve by the standby indoor unit is treated Machine aperture.
- 5. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 4, it is characterised in that institute The first aperture threshold value is stated less than or equal to the described first default aperture, the second aperture threshold value is default less than or equal to described second to be opened Degree.
- 6. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 3, it is characterised in that when When the middle portion temperature average value is less than or equal to the first default mean temperature, the electric expansion valve of each standby indoor unit is controlled to protect It is constant to hold initial opening.
- 7. the control method for electronic expansion valve under multi-line system heating mode as claimed in claim 4, it is characterised in that when When the middle portion temperature is less than or equal to the first preset temperature, the electric expansion valve of each standby indoor unit is controlled to keep initial opening It is constant.
- 8. the control method for electronic expansion valve under multi-line system heating mode as any one of claim 1-7, its It is characterized in that, the initial opening is determined according to the exploitation pulse aperture of the electric expansion valve.
- 9. the control method for electronic expansion valve under multi-line system heating mode as any one of claim 1-7, its It is characterized in that, the default standby aperture of maximum is less than or equal to 1/5th of the maximum opening of the electric expansion valve.
- 10. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, it is characterised in that the program The electric expansion valve under multi-line system heating mode as claimed in any one of claims 1-9 wherein is realized when being executed by processor Control method.
- 11. a kind of multi-line system, it is characterised in that the multi-line system includes multiple indoor units, and each indoor unit includes Indoor heat exchanger and electric expansion valve, the multi-line system further include memory, processor and are stored on the memory And the control program for the multi-line system that can be run on the processor, the control program of the multi-line system is by the place Reason device realizes the electronic expansion valve controls under multi-line system heating mode as claimed in any one of claims 1-9 wherein when performing The step of method.
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| CN201711164986.6A CN108006909B (en) | 2017-11-21 | 2017-11-21 | Multi-split air conditioning system and control method of electronic expansion valve in heating mode of multi-split air conditioning system |
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| CN110470030A (en) * | 2019-07-30 | 2019-11-19 | 青岛海尔空调器有限总公司 | The control method for electronic expansion valve and multi-split air conditioner of multi-split air conditioner |
| CN110553339A (en) * | 2019-09-19 | 2019-12-10 | 宁波奥克斯电气股份有限公司 | Heat accumulation prevention control method and device for multi-split air conditioner and air conditioner |
| CN111397133A (en) * | 2020-03-31 | 2020-07-10 | 青岛海尔空调电子有限公司 | Control method of multi-split air conditioner |
| CN111486553A (en) * | 2020-03-25 | 2020-08-04 | 海信（山东）空调有限公司 | Air conditioner control method and device, air conditioner and computer storage medium |
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| CN111637588A (en) * | 2020-05-30 | 2020-09-08 | 广东志高暖通设备股份有限公司 | Control method of multi-split system |
| CN112714847A (en) * | 2018-09-20 | 2021-04-27 | 东芝开利株式会社 | Air conditioner and control method |
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