CN105737333B - Multi-line system and its mode switch control method - Google Patents
Multi-line system and its mode switch control method Download PDFInfo
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- CN105737333B CN105737333B CN201610096231.6A CN201610096231A CN105737333B CN 105737333 B CN105737333 B CN 105737333B CN 201610096231 A CN201610096231 A CN 201610096231A CN 105737333 B CN105737333 B CN 105737333B
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of multi-line system and its mode switch control methods, the described method comprises the following steps：When any one indoor unit receives pattern switching instruction in multiple indoor units, which is sent to part flow arrangement by pattern switching instruction；When part flow arrangement judges that the indoor unit switches from refrigeration mode to heating mode according to pattern switching instruction, the corresponding refrigeration control valve of the indoor unit is controlled to close, and before controlling the corresponding heating control valve of the indoor unit and opening, by adjusting the aperture of restricting element in the indoor unit so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that the front and back pressure of the corresponding heating control valve of the indoor unit is balanced.This method is when machine switches from refrigeration mode to heating mode indoors, the degree of supercooling of the indoor unit is adjusted to first object degree of supercooling by adjusting the aperture of restricting element in indoor unit, so that the front and back pressure of the corresponding heating control valve of the indoor unit is balanced, to the noise generated when reduction mode switching.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to the mode switch control method and one of a kind of multi-line system
Kind multi-line system.
Background technology
For the building for using multi-line system, be frequently present of existing refrigeration duty has the case where thermic load again, together
The change of Shi Yinwei user demands, indoor unit operational mode can be often switched to heating mode by refrigeration mode, or by heating mould
Formula is switched to refrigeration mode.
In pattern switching, when the refrigeration control valve (heating control valve) of indoor unit is opened, inevitably because
The difference of system pressure distribution, pressure difference is excessive before and after there is valve body, to generate larger noise, influences user's body
It tests.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose that a kind of mode switch control method of multi-line system, this method can effectively reduce indoor unit in mould
The noise that formula generates when switching, to improve user experience.
It is another object of the present invention to propose a kind of multi-line system.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of pattern switching controlling party of multi-line system
Method, the multi-line system include outdoor unit, multiple indoor units and part flow arrangement, each indoor unit in the multiple indoor unit
Include restricting element, the part flow arrangement includes heating control valve corresponding with each indoor unit in the multiple indoor unit
With refrigeration control valve, the described method comprises the following steps：When any one indoor unit in the multiple indoor unit receives mould
When formula switching command, which is sent to the part flow arrangement by pattern switching instruction；The part flow arrangement is according to institute
Pattern switching instruction is stated when judging that the indoor unit switches from refrigeration mode to heating mode, the corresponding refrigeration of the indoor unit is controlled and controls
Valve processed is closed, and before controlling the corresponding heating control valve of the indoor unit and opening, by adjusting restricting element in the indoor unit
Aperture so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that before the corresponding heating control valve of the indoor unit
Pressure is balanced afterwards.
The mode switch control method of multi-line system according to the ... of the embodiment of the present invention, when any one in multiple indoor units
When a indoor unit receives pattern switching instruction, which is sent to part flow arrangement, part flow arrangement root by pattern switching instruction
When judging that the indoor unit switches from refrigeration mode to heating mode according to pattern switching instruction, the corresponding refrigeration control of the indoor unit is controlled
Valve processed is closed, and before controlling the corresponding heating control valve of the indoor unit and opening, by adjusting restricting element in the indoor unit
Aperture so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that before the corresponding heating control valve of the indoor unit
Pressure is balanced afterwards, to effectively reduce the noise that indoor unit is generated in pattern switching, improves user experience.
According to one embodiment of present invention, the part flow arrangement according to the pattern switching instruction judge the indoor unit by
When heating mode switches to refrigeration mode, controls the corresponding heating control valve of the indoor unit and close, and controlling the indoor unit pair
Before the refrigeration control valve answered is opened, by adjusting the aperture of restricting element in the indoor unit so that the degree of superheat of the indoor unit reaches
To the first object degree of superheat, so that the front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced.
According to one embodiment of present invention, controlling the indoor unit corresponding refrigeration control valve closing, to reach first default
When the time, the target degree of supercooling for controlling each of the multiple indoor unit heating indoor unit is reduced to the first object to be subcooled
When spending, and obtain the first regulating time in the aperture of restricting element in adjusting the indoor unit, and being adjusted according to described first
Between and first preset time calculate the time that the indoor unit switches from refrigeration mode to heating mode, wherein when the interior
When the time that machine switches from refrigeration mode to heating mode is more than the second preset time, the corresponding heating of the indoor unit is directly controlled
Control valve is opened；It is less than or equal to second preset time when the time that the indoor unit switches from refrigeration mode to heating mode
When, if it is determined that the degree of supercooling of the indoor unit reaches the first object degree of supercooling, then control the corresponding heating control of the indoor unit
Valve processed is opened.
According to one embodiment of present invention, it presets controlling the indoor unit corresponding heating control valve closing and reach third
When the time, the target superheat degree for controlling each of the multiple indoor unit refrigeration indoor unit is reduced to the first object to overheat
When spending, and obtain the second regulating time in the aperture of restricting element in adjusting the indoor unit, and being adjusted according to described second
Between and the third preset time calculate the time that the indoor unit switches from heating mode to refrigeration mode, wherein when the interior
When the time that machine switches from heating mode to refrigeration mode is more than the second preset time, the corresponding refrigeration of the indoor unit is directly controlled
Control valve is opened；It is less than or equal to second preset time when the time that the indoor unit switches from heating mode to refrigeration mode
When, if it is determined that the degree of superheat of the indoor unit reaches the first object degree of superheat, then control the corresponding refrigeration control of the indoor unit
Valve processed is opened.
In an embodiment of the present invention, the multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of multi-line system, including：Outdoor unit；
Multiple indoor units, each indoor unit in the multiple indoor unit include restricting element；Part flow arrangement, the part flow arrangement packet
Include heating control valve corresponding with each indoor unit in the multiple indoor unit and refrigeration control valve, wherein when the multiple
When any one indoor unit in indoor unit receives pattern switching instruction, which is sent to pattern switching instruction
The part flow arrangement；The part flow arrangement further includes：Control module, the control module are used to be instructed according to the pattern switching
When judging that the indoor unit switches from refrigeration mode to heating mode, controls the corresponding refrigeration control valve of the indoor unit and close, and
Before controlling the corresponding heating control valve unlatching of the indoor unit, by adjusting the aperture of restricting element in the indoor unit so that the room
The degree of supercooling of interior machine reaches first object degree of supercooling, so that the front and back pressure of the corresponding heating control valve of the indoor unit is balanced.
Multi-line system according to the ... of the embodiment of the present invention, when any one indoor unit in multiple indoor units receives pattern
When switching command, which is sent to part flow arrangement by pattern switching instruction, and the control module in part flow arrangement is according to pattern
When switching command judges that the indoor unit switches from refrigeration mode to heating mode, controls the corresponding refrigeration control valve of the indoor unit and close
It closes, and before controlling the corresponding heating control valve of the indoor unit and opening, by the aperture for adjusting restricting element in the indoor unit
So that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that the front and back pressure of the corresponding heating control valve of the indoor unit
Equilibrium improves user experience to effectively reduce the noise that indoor unit is generated in pattern switching.
According to one embodiment of present invention, the control module according to the pattern switching instruction judge the indoor unit by
When heating mode switches to refrigeration mode, controls the corresponding heating control valve of the indoor unit and close, and controlling the indoor unit pair
Before the refrigeration control valve answered is opened, by adjusting the aperture of restricting element in the indoor unit so that the degree of superheat of the indoor unit reaches
To the first object degree of superheat, so that the front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced.
According to one embodiment of present invention, the control module is controlling the corresponding refrigeration control valve closing of the indoor unit
When reaching the first preset time, control each of the multiple indoor unit heating indoor unit target degree of supercooling be reduced to it is described
First object degree of supercooling, and the first regulating time is obtained in the aperture of restricting element in adjusting the indoor unit, and according to institute
It states the first regulating time and first preset time calculates the time that the indoor unit switches from refrigeration mode to heating mode,
In, when the time that the indoor unit switches from refrigeration mode to heating mode being more than the second preset time, control module is directly controlled
The corresponding heating control valve of the indoor unit is made to open；When the time that the indoor unit switches from refrigeration mode to heating mode be less than etc.
When second preset time, if it is determined that the degree of supercooling of the indoor unit reaches the first object degree of supercooling, control module
The corresponding heating control valve of the indoor unit is then controlled to open.
According to one embodiment of present invention, control module reaches controlling the corresponding heating control valve of the indoor unit and close
When third preset time, the target superheat degree for controlling each of the multiple indoor unit refrigeration indoor unit is reduced to described first
Target superheat degree, and the second regulating time is obtained in the aperture of restricting element in adjusting the indoor unit, and according to described
Two regulating times and the third preset time calculate the time that the indoor unit switches from heating mode to refrigeration mode, wherein
When the time that the indoor unit switches from heating mode to refrigeration mode being more than the second preset time, control module directly controls this
The corresponding refrigeration control valve of indoor unit is opened；It is less than or equal to institute when the time that the indoor unit switches from heating mode to refrigeration mode
When stating the second preset time, if it is determined that the degree of superheat of the indoor unit reaches the first object degree of superheat, control module is then controlled
The corresponding refrigeration control valve of the indoor unit is made to open.
In an embodiment of the present invention, the multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.
Description of the drawings
Fig. 1 is the flow chart of the mode switch control method of multi-line system according to the ... of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of multi-line system according to an embodiment of the invention.
Fig. 3 is the flow chart of the mode switch control method of multi-line system according to an embodiment of the invention.
Reference numeral：Restricting element EV1, EV2, EV3 and EV4, refrigeration control valve SV1, SV2, SV3 and SV4, heating control
Valve is SV1B, SV2B, SV3B, SV4B.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.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.
Below with reference to the accompanying drawings the mode switch control method of the multi-line system proposed according to embodiments of the present invention described
And multi-line system.
Fig. 1 is the flow chart of the mode switch control method of multi-line system according to the ... of the embodiment of the present invention.
In an embodiment of the present invention, multi-line system may include outdoor unit, multiple indoor units and part flow arrangement, multiple
Each indoor unit in indoor unit includes restricting element, and part flow arrangement includes corresponding with each indoor unit in multiple indoor units
Heating control valve and refrigeration control valve.Restricting element can be electric expansion valve, and heating control valve and refrigeration control valve can be with
For solenoid valve.
Specifically, as shown in Fig. 2, multiple indoor units may include the first indoor unit, the second indoor unit ..., it is n-th indoor
Machine, wherein n are positive integer.Restricting element in first indoor unit to the n-th indoor unit be followed successively by EV1, EV2 ..., EVn, the first Room
The corresponding refrigeration control valve of interior machine is SV1 and heating control valve is SV1B, the corresponding refrigeration control valve of the second indoor unit be SV2 and
Heating control valve is SV2B ..., and the corresponding refrigeration control valve of the n-th indoor unit is SVn and heating control valve is SVnB.
As shown in Figure 1, the mode switch control method of the multi-line system includes the following steps：
S1, when any one indoor unit in multiple indoor units receives pattern switching instruction, the indoor unit is by pattern
Switching command is sent to part flow arrangement.
S2, when part flow arrangement judges that the indoor unit switches from refrigeration mode to heating mode according to pattern switching instruction, control
It makes the corresponding refrigeration control valve of the indoor unit to close, and before controlling the corresponding heating control valve of the indoor unit and opening, passes through
The aperture of restricting element in the indoor unit is adjusted so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that the interior
The front and back pressure of the corresponding heating control valve of machine is balanced.Wherein, first object degree of supercooling can be demarcated according to actual conditions.
Specifically, as shown in Fig. 2, multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.When multiple
Any one indoor unit in indoor unit receive pattern switching instruction when, such as third indoor unit receive from refrigeration mode to
When the pattern switching instruction of heating mode switching, pattern switching instruction is sent to part flow arrangement by third indoor unit.Part flow arrangement
Judge third indoor unit from refrigeration mode to heating mode switching, at this point, part flow arrangement first controls the according to pattern switching instruction
The corresponding refrigeration control valve of three indoor units is closed, then by adjusting the aperture of the restricting element in third indoor unit, so that the
The degree of supercooling of three indoor units reaches first object degree of supercooling, to reduce the front and back pressure of the corresponding heating control valve of third indoor unit
Power, and then reduce the noise that indoor unit is generated in pattern switching.
According to one embodiment of present invention, controlling the indoor unit corresponding refrigeration control valve closing, to reach first default
When the time, the target degree of supercooling for controlling each of multiple indoor units heating indoor unit is reduced to first object degree of supercooling, and
The first regulating time is obtained when adjusting the aperture of restricting element in the indoor unit, and default according to the first regulating time and first
Time calculates the time that the indoor unit switches from refrigeration mode to heating mode, wherein when the indoor unit is from refrigeration mode to system
When the time of heat pattern switching is more than the second preset time, directly controls the corresponding heating control valve of the indoor unit and open；When this
When the time that indoor unit switches from refrigeration mode to heating mode is less than or equal to the second preset time, if it is determined that the indoor unit
Degree of supercooling reaches first object degree of supercooling, then controls the corresponding heating control valve of the indoor unit and open.First preset time and
Two preset times can be demarcated according to actual conditions.
Specifically, as shown in figure 3, when the operational mode of indoor unit switches from refrigeration mode to heating mode, shunting dress
It sets and first closes the corresponding refrigeration control valve (step S101-S102) of the indoor unit, the first preset time of delay reduces more after A1 seconds
In a indoor unit in all heating chambers the target degree of supercooling of machine to first object degree of supercooling (step S103-104).Then, according to
The aperture of the restricting element of the indoor unit is adjusted in first object degree of supercooling, while recording the regulating time of restricting element
B1, and the indoor unit is calculated from refrigeration mode to heating mode according to the regulating time B1 of the first preset time A1 and restricting element
The time C1=A1+B1 (step S105-S107) of switching.In the restricting element adjustment process to the indoor unit, if the room
The degree of supercooling of interior machine reaches first object degree of supercooling, i.e. the degree of supercooling of the indoor unit is adjusted in place, then controls indoor unit correspondence
Heating control valve open；And if the degree of supercooling of the indoor unit is not up to first object degree of supercooling, continue to the indoor unit
The aperture of restricting element be adjusted, and the degree of supercooling of the indoor unit is judged, and in the indoor unit by refrigeration mode
When the time C1 switched to heating mode is more than the second preset time such as 150 seconds, the corresponding heating control valve of the indoor unit is controlled
It opens (step S108-S110).That is, when the mode switch time C1 of the indoor unit is more than the second preset time, or
When the degree of supercooling of the indoor unit reaches first object degree of supercooling, the heating control valve for controlling the indoor unit is opened, and pattern is cut at this time
Change end；Otherwise, continue that the aperture of the restricting element of the indoor unit is adjusted.
The mode switch control method of multi-line system according to the ... of the embodiment of the present invention, indoors machine switched by refrigeration mode
For heating mode when, by the aperture regulation to restricting element in the indoor unit, so that the degree of supercooling of the indoor unit reaches first
Target degree of supercooling, it is balanced with the front and back pressure for reducing the corresponding heating control valve of the indoor unit, to be produced when reduction mode switching
Raw noise, while can also ensure that the stability of system, improve the quality and user satisfaction of system.
According to one embodiment of present invention, part flow arrangement judges the indoor unit by heating mode according to pattern switching instruction
It when switching to refrigeration mode, controls the corresponding heating control valve of the indoor unit and closes, and controlling the corresponding refrigeration of the indoor unit
Before control valve is opened, by adjusting the aperture of restricting element in the indoor unit so that the degree of superheat of the indoor unit reaches the first mesh
The degree of superheat is marked, so that the front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced, wherein the first object degree of superheat can root
It is demarcated according to actual conditions.
Specifically, as shown in Fig. 2, multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.When multiple
Any one indoor unit in indoor unit receive pattern switching instruction when, such as the first indoor unit receive from heating mode to
When the pattern switching instruction of refrigeration mode switching, pattern switching instruction is sent to part flow arrangement by the first indoor unit.Part flow arrangement
Judge the first indoor unit from heating mode to refrigeration mode switching, at this point, part flow arrangement first controls the according to pattern switching instruction
The corresponding heating control valve of one indoor unit is closed, then by adjusting the aperture of the restricting element in the first indoor unit, so that the
The degree of superheat of one indoor unit reaches the first object degree of superheat, to reduce the front and back pressure of the corresponding refrigeration control valve of the first indoor unit
Power, and then reduce the noise that indoor unit is generated in pattern switching.
According to one embodiment of present invention, it presets controlling the indoor unit corresponding heating control valve closing and reach third
When the time, the target superheat degree for controlling each of multiple indoor units refrigeration indoor unit is reduced to the first object degree of superheat, and
The second regulating time is obtained when adjusting the aperture of restricting element in the indoor unit, and default according to the second regulating time and third
Time calculates the time that the indoor unit switches from heating mode to refrigeration mode, wherein when the indoor unit is from heating mode to system
When the time of cold pattern switching is more than the second preset time, directly controls the corresponding refrigeration control valve of the indoor unit and open；When this
When the time that indoor unit switches from heating mode to refrigeration mode is less than or equal to the second preset time, if it is determined that the indoor unit
The degree of superheat reaches the first object degree of superheat, then controls the corresponding refrigeration control valve of the indoor unit and open, wherein third preset time
It can be demarcated according to actual conditions.
Specifically, as shown in figure 3, when the operational mode of indoor unit switches from heating mode to refrigeration mode, shunting dress
It sets and first closes the corresponding heating control valve (step S111-S112) of the indoor unit, delay third preset time reduces more after A2 seconds
In a indoor unit in all cool rooms the target superheat degree of machine to the first object degree of superheat (step S113-S114).Then, according to
The aperture of the restricting element of the indoor unit is adjusted in the first object degree of superheat, while recording the regulating time of restricting element
B2, and the indoor unit is calculated from heating mode to refrigeration mode according to the regulating time B2 of third preset time A2 and restricting element
The time C2=A2+B2 (step S115-S117) of switching.In the restricting element adjustment process to the indoor unit, if the room
The degree of superheat of interior machine reaches the first object degree of superheat, i.e. the degree of superheat of the indoor unit is adjusted in place, then controls indoor unit correspondence
Refrigeration control valve open；And if the degree of superheat of the indoor unit is not up to the first object degree of superheat, continue to the indoor unit
The aperture of restricting element be adjusted, and the degree of superheat of the indoor unit is judged, and in the indoor unit by heating mode
When the time C2 switched to refrigeration mode is more than the second preset time such as 150 seconds, the corresponding refrigeration control valve of the indoor unit is controlled
It opens (step S118-S120).That is, when the mode switch time C2 of the indoor unit is more than the second preset time, or
When the degree of superheat of the indoor unit reaches the first object degree of superheat, the refrigeration control valve for controlling the indoor unit is opened, and pattern is cut at this time
Change end；Otherwise, continue that the aperture of the restricting element of the indoor unit is adjusted.
The mode switch control method of multi-line system according to the ... of the embodiment of the present invention, indoors machine switched by heating mode
For refrigeration mode when, by the aperture regulation to restricting element in the indoor unit, so that the degree of superheat of the indoor unit reaches first
Target superheat degree, it is balanced with the front and back pressure for reducing the corresponding refrigeration control valve of the indoor unit, to be produced when reduction mode switching
Raw noise, while can also ensure that the stability of system, improve the quality and user satisfaction of system.
In conclusion the mode switch control method of the multi-line system of the embodiment of the present invention, is carrying out pattern switching mistake
Cheng Zhong can effectively reduce the noise generated when pattern switching, while ensure the stability of system, improve system quality and
User satisfaction.
Fig. 2 is the structural schematic diagram of multi-line system according to an embodiment of the invention.As shown in Fig. 2, the multi-connected machine
System includes：Outdoor unit (not specifically illustrated in figure), multiple indoor units and part flow arrangement.Wherein, each of multiple indoor units
Indoor unit include restricting element, part flow arrangement include heating control valve corresponding with each indoor unit in multiple indoor units and
Refrigeration control valve.
Specifically, as shown in Fig. 2, multiple indoor units may include the first indoor unit, the second indoor unit ..., it is n-th indoor
Machine, wherein n are positive integer.Restricting element in first indoor unit to the n-th indoor unit be followed successively by EV1, EV2 ..., EVn, the first Room
The corresponding refrigeration control valve of interior machine is SV1 and heating control valve is SV1B, the corresponding refrigeration control valve of the second indoor unit be SV2 and
Heating control valve is SV2B ..., and the corresponding refrigeration control valve of the n-th indoor unit is SVn and heating control valve is SVnB.
When any one indoor unit in multiple indoor units receives pattern switching instruction, the indoor unit is by pattern switching
Instruction is sent to part flow arrangement.Part flow arrangement further includes control module (not specifically illustrated in figure), and control module is used for according to mould
When formula switching command judges that the indoor unit switches from refrigeration mode to heating mode, the corresponding refrigeration control valve of the indoor unit is controlled
It closes, and before controlling the indoor unit corresponding heating control valve unlatching, by adjusting opening for restricting element in the indoor unit
It spends so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that the front and back pressure of the corresponding heating control valve of the indoor unit
Power is balanced.
Specifically, as shown in Fig. 2, multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.When multiple
Any one indoor unit in indoor unit receive pattern switching instruction when, such as third indoor unit receive from refrigeration mode to
When the pattern switching instruction of heating mode switching, pattern switching instruction is sent to part flow arrangement by third indoor unit.Part flow arrangement
Judge third indoor unit from refrigeration mode to heating mode switching, at this point, part flow arrangement first controls the according to pattern switching instruction
The corresponding refrigeration control valve SV3 of three indoor units is closed, then by adjusting the aperture of the restricting element EV3 in third indoor unit,
So that the degree of supercooling of third indoor unit reaches first object degree of supercooling, to reduce the corresponding heating control valve of third indoor unit
The front and back pressure of SV3B, and then reduce the noise that indoor unit is generated in pattern switching.
According to one embodiment of present invention, control module reaches controlling the indoor unit corresponding refrigeration control valve closing
When the first preset time, the target degree of supercooling for controlling each of multiple indoor units heating indoor unit is reduced to first object to be subcooled
Degree, and obtains the first regulating time in the aperture of restricting element in adjusting the indoor unit, and according to the first regulating time with
First preset time calculates the time that the indoor unit switches from refrigeration mode to heating mode, wherein when the indoor unit is by freezing
When the time that pattern switches to heating mode is more than the second preset time, control module directly controls the corresponding heating of the indoor unit
Control valve is opened；When the time that the indoor unit switches from refrigeration mode to heating mode being less than or equal to the second preset time, such as
Fruit judges that the degree of supercooling of the indoor unit reaches first object degree of supercooling, and control module then controls the corresponding heating control of the indoor unit
Valve is opened.
Specifically, as shown in Fig. 2, still being illustrated by taking third indoor unit as an example.When third indoor unit operational mode by
When refrigeration mode switches to heating mode, control module first closes the corresponding refrigeration control valve SV3 of third indoor unit, delay first
After preset time A1 seconds, control module reduces the target degree of supercooling of machine in all heating chambers in multiple indoor units to first object mistake
Cold degree.Then, control module is adjusted the aperture of the restricting element EV3 of third indoor unit according to first object degree of supercooling,
The regulating time B1 of restricting element EV3 is recorded simultaneously, and according to the regulating time B1 of the first preset time A1 and restricting element EV3
Calculate the time C1=A1+B1 that third indoor unit switches from refrigeration mode to heating mode.Control module is to third indoor unit
Restricting element EV3 adjustment processes in, if the degree of supercooling of third indoor unit reaches first object degree of supercooling, i.e. third indoor unit
Degree of supercooling be adjusted in place, then control module control third indoor unit corresponding heating control valve SV3B unlatchings；And if third
The degree of supercooling of indoor unit is not up to first object degree of supercooling, then continues to carry out the aperture of the restricting element EV3 of third indoor unit
It adjusts, and the degree of supercooling of third indoor unit is judged, and switch from refrigeration mode to heating mode in third indoor unit
When time C1 is more than the second preset time such as 150 seconds, the corresponding heating control valve SV3B unlatchings of control third indoor unit.Namely
It says, when the degree of supercooling that the mode switch time C1 of third indoor unit is more than the second preset time or third indoor unit reaches the
When one target degree of supercooling, the heating control valve SV3B that control module controls third indoor unit is opened, and pattern switching terminates at this time；It is no
Then, continue that the aperture of the restricting element EV3 of third indoor unit is adjusted.
Multi-line system according to the ... of the embodiment of the present invention when machine is switched to heating mode by refrigeration mode indoors, passes through
To the aperture regulation of restricting element in the indoor unit, so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, to reduce
The front and back pressure of the corresponding heating control valve of the indoor unit is balanced, to the noise generated when reduction mode switching, while can also
The stability for enough ensureing system, improves the quality and user satisfaction of system.
According to one embodiment of present invention, control module judges the indoor unit by heating mode according to pattern switching instruction
It when switching to refrigeration mode, controls the corresponding heating control valve of the indoor unit and closes, and controlling the corresponding refrigeration of the indoor unit
Before control valve is opened, by adjusting the aperture of restricting element in the indoor unit so that the degree of superheat of the indoor unit reaches the first mesh
The degree of superheat is marked, so that the front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced.
Specifically, as shown in Fig. 2, multi-line system is in the mixed running pattern that cooling and warming is carried out at the same time.When multiple
Any one indoor unit in indoor unit receive pattern switching instruction when, such as the first indoor unit receive from heating mode to
When the pattern switching instruction of refrigeration mode switching, pattern switching instruction is sent to part flow arrangement by the first indoor unit.Control module
Judge the first indoor unit from heating mode to refrigeration mode switching, at this point, part flow arrangement first controls the according to pattern switching instruction
The corresponding heating control valve SV1B of one indoor unit is closed, then by adjusting the aperture of the restricting element EV1 in the first indoor unit,
So that the degree of superheat of the first indoor unit reaches the first object degree of superheat, to reduce the corresponding refrigeration control valve of the first indoor unit
The front and back pressure of SV1, and then reduce the noise that indoor unit is generated in pattern switching.
According to one embodiment of present invention, control module reaches controlling the corresponding heating control valve of the indoor unit and close
When third preset time, the target superheat degree for controlling each of multiple indoor units refrigeration indoor unit is reduced to first object to overheat
Degree, and obtains the second regulating time in the aperture of restricting element in adjusting the indoor unit, and according to the second regulating time with
Third preset time calculates the time that the indoor unit switches from heating mode to refrigeration mode, wherein when the indoor unit is by heating
When the time that pattern switches to refrigeration mode is more than the second preset time, control module directly controls the corresponding refrigeration of the indoor unit
Control valve is opened；When the time that the indoor unit switches from heating mode to refrigeration mode being less than or equal to the second preset time, such as
Fruit judges that the degree of superheat of the indoor unit reaches the first object degree of superheat, and control module then controls the corresponding refrigeration control of the indoor unit
Valve is opened.
Specifically, as shown in Fig. 2, still being illustrated by taking the first indoor unit as an example.When the first indoor unit operational mode by
When heating mode switches to refrigeration mode, control module first closes the corresponding heating control valve SV1B of the first indoor unit, delay the
After three preset times A2 seconds, control module reduces the target superheat degree of machine in all cool rooms in multiple indoor units to first object
The degree of superheat.Then, control module is adjusted according to the aperture of the restricting element EV1 of the first indoor unit of the first object degree of superheat pair
Section, while recording the regulating time B2 of restricting element EV1, and when according to the adjusting of third preset time A2 and restricting element EV1
Between B2 calculate time C2=A2+B2 from heating mode to refrigeration mode that switch from of the first indoor unit.Control module is to the first Room
In the restricting element EV1 adjustment processes of interior machine, if the degree of superheat of the first indoor unit reaches the first object degree of superheat, i.e. the first Room
The degree of superheat of interior machine is adjusted in place, then control module controls the corresponding refrigeration control valve SV1 of the first indoor unit and opens；And if
The degree of superheat of one indoor unit is not up to the first object degree of superheat, then continue to the aperture of the restricting element EV1 of the first indoor unit into
Row is adjusted, and is judged the degree of superheat of the first indoor unit, and is switched from heating mode to refrigeration mode in the first indoor unit
Time C2 when being more than the second preset time such as 150 seconds, the corresponding refrigeration control valve SV1 unlatchings of the first indoor unit of control.Also
It is to say, when the degree of superheat that the mode switch time C2 of the first indoor unit is more than the second preset time or the first indoor unit reaches
When the first object degree of superheat, the refrigeration control valve SV1 that control module controls the first indoor unit is opened, and pattern switching terminates at this time；
Otherwise, continue that the aperture of the restricting element EV1 of the first indoor unit is adjusted.
Multi-line system according to the ... of the embodiment of the present invention when machine is switched to refrigeration mode by heating mode indoors, passes through
To the aperture regulation of restricting element in the indoor unit, so that the degree of superheat of the indoor unit reaches the first object degree of superheat, to reduce
The front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced, to the noise generated when reduction mode switching, while can also
The stability for enough ensureing system, improves the quality and user satisfaction of system.
The multi-line system of the embodiment of the present invention, in carrying out mode handover procedure, when can effectively reduce pattern switching
The noise of generation, while ensureing the stability of system, improve the quality and user satisfaction of system.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct 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 be directly above or diagonally above the second feature, 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 directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (8)
1. a kind of mode switch control method of multi-line system, which is characterized in that the multi-line system includes outdoor unit, more
A indoor unit and part flow arrangement, each indoor unit in the multiple indoor unit include restricting element, the part flow arrangement packet
Heating control valve corresponding with each indoor unit in the multiple indoor unit and refrigeration control valve are included, the method includes following
Step：
When any one indoor unit in the multiple indoor unit receives pattern switching instruction, the indoor unit is by the pattern
Switching command is sent to the part flow arrangement；
When the part flow arrangement judges that the indoor unit switches from refrigeration mode to heating mode according to pattern switching instruction, control
It makes the corresponding refrigeration control valve of the indoor unit to close, and before controlling the corresponding heating control valve of the indoor unit and opening, passes through
The aperture of restricting element in the indoor unit is adjusted so that the degree of supercooling of the indoor unit reaches first object degree of supercooling, so that the interior
The front and back pressure of the corresponding heating control valve of machine is balanced, wherein
When controlling the indoor unit corresponding refrigeration control valve closing and reaching the first preset time, control in the multiple indoor unit
Each of the target degree of supercooling of heating indoor unit be reduced to the first object degree of supercooling, and throttling is first in adjusting the indoor unit
The first regulating time is obtained when the aperture of part, and the room is calculated according to first regulating time and first preset time
The time that interior machine switches from refrigeration mode to heating mode, wherein
When the time that the indoor unit switches from refrigeration mode to heating mode being more than the second preset time, the interior is directly controlled
The corresponding heating control valve of machine is opened；
When the time that the indoor unit switches from refrigeration mode to heating mode being less than or equal to second preset time, if sentenced
The degree of supercooling of the disconnected indoor unit reaches the first object degree of supercooling, then controls the corresponding heating control valve of the indoor unit and open.
2. the mode switch control method of multi-line system according to claim 1, which is characterized in that the part flow arrangement
When judging that the indoor unit switches from heating mode to refrigeration mode according to pattern switching instruction, it is corresponding to control the indoor unit
It heats control valve to close, and before controlling the corresponding refrigeration control valve of the indoor unit and opening, is saved by adjusting in the indoor unit
The aperture of fluid element is so that the degree of superheat of the indoor unit reaches the first object degree of superheat, so that the corresponding refrigeration control of the indoor unit
The front and back pressure of valve is balanced.
3. the mode switch control method of multi-line system according to claim 2, which is characterized in that controlling the interior
When the corresponding heating control valve closing of machine reaches third preset time, each of the multiple indoor unit refrigeration indoor unit is controlled
Target superheat degree be reduced to the first object degree of superheat, and is obtained in the aperture of restricting element in adjusting the indoor unit
Two regulating times, and according to second regulating time and the third preset time calculate the indoor unit from heating mode to
The time of refrigeration mode switching, wherein
When the time that the indoor unit switches from heating mode to refrigeration mode being more than the second preset time, the interior is directly controlled
The corresponding refrigeration control valve of machine is opened；
When the time that the indoor unit switches from heating mode to refrigeration mode being less than or equal to second preset time, if sentenced
The degree of superheat of the disconnected indoor unit reaches the first object degree of superheat, then controls the corresponding refrigeration control valve of the indoor unit and open.
4. the mode switch control method of multi-line system according to any one of claim 1-3, which is characterized in that institute
It states multi-line system and is in the mixed running pattern that cooling and warming is carried out at the same time.
5. a kind of multi-line system, which is characterized in that including：
Outdoor unit；
Multiple indoor units, each indoor unit in the multiple indoor unit include restricting element；
Part flow arrangement, the part flow arrangement include heating control valve corresponding with each indoor unit in the multiple indoor unit and
Refrigeration control valve, wherein when any one indoor unit in the multiple indoor unit receives pattern switching instruction, the interior
Pattern switching instruction is sent to the part flow arrangement by machine；
The part flow arrangement further includes：
Control module, the control module are used to judge the indoor unit from refrigeration mode to heating according to pattern switching instruction
It when pattern switching, controls the corresponding refrigeration control valve of the indoor unit and closes, and controlling the corresponding heating control valve of the indoor unit
Before unlatching, by adjusting the aperture of restricting element in the indoor unit so that the degree of supercooling of the indoor unit reaches first object supercooling
Degree, so that the front and back pressure of the corresponding heating control valve of the indoor unit is balanced, wherein the control module is controlling the indoor unit
When corresponding refrigeration control valve closing reaches the first preset time, each of the multiple indoor unit heating indoor unit is controlled
Target degree of supercooling is reduced to the first object degree of supercooling, and obtains first in the aperture of restricting element in adjusting the indoor unit
Regulating time, and the indoor unit is calculated from refrigeration mode to system according to first regulating time and first preset time
The time of heat pattern switching, wherein
When the time that the indoor unit switches from refrigeration mode to heating mode being more than the second preset time, control module is directly controlled
The corresponding heating control valve of the indoor unit is made to open；
When the time that the indoor unit switches from refrigeration mode to heating mode being less than or equal to second preset time, if sentenced
The degree of supercooling of the disconnected indoor unit reaches the first object degree of supercooling, and control module then controls the corresponding heating control of the indoor unit
Valve is opened.
6. multi-line system according to claim 5, which is characterized in that the control module refers to according to the pattern switching
When order judges that the indoor unit switches from heating mode to refrigeration mode, controls the corresponding heating control valve of the indoor unit and close, and
Before controlling the corresponding refrigeration control valve of the indoor unit and opening, by adjusting the aperture of restricting element in the indoor unit so that should
The degree of superheat of indoor unit reaches the first object degree of superheat, so that the front and back pressure of the corresponding refrigeration control valve of the indoor unit is balanced.
7. multi-line system according to claim 6, which is characterized in that control module is controlling the corresponding system of the indoor unit
When heat control valve (HCV) closing reaches third preset time, the target superheat of each of the multiple indoor unit refrigeration indoor unit is controlled
Degree is reduced to the first object degree of superheat, and in the aperture of restricting element in adjusting the indoor unit when the second adjusting of acquisition
Between, and the indoor unit calculated from heating mode to refrigeration mode according to second regulating time and the third preset time
The time of switching, wherein
When the time that the indoor unit switches from heating mode to refrigeration mode being more than the second preset time, control module is directly controlled
The corresponding refrigeration control valve of the indoor unit is made to open；
When the time that the indoor unit switches from heating mode to refrigeration mode being less than or equal to second preset time, if sentenced
The degree of superheat of the disconnected indoor unit reaches the first object degree of superheat, and control module then controls the corresponding refrigeration control of the indoor unit
Valve is opened.
8. according to the multi-line system described in any one of claim 5-7, which is characterized in that the multi-line system is in system
It is cold to heat the mixed running pattern being carried out at the same time.
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| CN113108428B (en) * | 2021-04-13 | 2023-03-17 | 广州市水电设备安装有限公司 | Multi-split central air conditioning system and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190412A (en) * | 1993-12-28 | 1995-07-28 | Tokyo Gas Co Ltd | Duct air conditioner |
| CN1275700A (en) * | 2000-06-02 | 2000-12-06 | 海尔集团公司 | Improved refrigerating system for one driving multiple-unit air conditioner |
| CN101065623A (en) * | 2004-11-25 | 2007-10-31 | 三菱电机株式会社 | Air conditioner |
| CN101329093A (en) * | 2007-06-22 | 2008-12-24 | 三星电子株式会社 | Multi air-conditioner for simultaneously cooling/heating and method for controlling the same |
| CN102032648A (en) * | 2010-12-07 | 2011-04-27 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN104748239A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
-
2016
- 2016-02-22 CN CN201610096231.6A patent/CN105737333B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190412A (en) * | 1993-12-28 | 1995-07-28 | Tokyo Gas Co Ltd | Duct air conditioner |
| CN1275700A (en) * | 2000-06-02 | 2000-12-06 | 海尔集团公司 | Improved refrigerating system for one driving multiple-unit air conditioner |
| CN101065623A (en) * | 2004-11-25 | 2007-10-31 | 三菱电机株式会社 | Air conditioner |
| CN101329093A (en) * | 2007-06-22 | 2008-12-24 | 三星电子株式会社 | Multi air-conditioner for simultaneously cooling/heating and method for controlling the same |
| CN102032648A (en) * | 2010-12-07 | 2011-04-27 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN104748239A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
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