CN109538457A - Method and device for controlling cylinder cutting of compressor, unit and air conditioning system - Google Patents
Method and device for controlling cylinder cutting of compressor, unit and air conditioning system Download PDFInfo
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- CN109538457A CN109538457A CN201811180119.6A CN201811180119A CN109538457A CN 109538457 A CN109538457 A CN 109538457A CN 201811180119 A CN201811180119 A CN 201811180119A CN 109538457 A CN109538457 A CN 109538457A
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- compressor
- operational mode
- twin
- tub
- way valve
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- 238000000034 method Methods 0.000 title claims abstract description 73
- 238000004378 air conditioning Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000005057 refrigeration Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a method, a device and a unit for controlling cylinder cutting of a compressor, and an air conditioning system. Wherein, the method comprises the following steps: the method comprises the steps of receiving a working mode conversion instruction, adjusting system control parameters to enable operation parameters to meet four-way valve reversing conditions after the working mode conversion instruction is received, controlling the four-way valve to reverse, and controlling the compressor to be switched from a single-cylinder operation mode to a double-cylinder operation mode. The factor that makes system's pressure differential produce the fluctuation is given priority to the consideration to ensure the compressor and stably maintain at double-cylinder running state, ensured the efficiency of unit, improved user's use and experienced.
Description
Technical field
The present invention relates to machine set technology fields, in particular to the method, apparatus and machine of a kind of control compression machine-cut cylinder
Group, air-conditioning system.
Background technique
Currently, developing single twin-tub switching skill of compressor to solve the problems, such as that multi-joint unit load is lower, efficiency is poor
Art.In the actual motion of unit, compressor cut cylinder failure phenomenon it is relatively conventional.Such as: during compressing machine-cut cylinder, by
In the variation of the components such as unit inner blower, electric expansion valve, it is likely that can normally cutting cylinder and impact to compressor.Compare again
Such as: after compressor switches to twin-tub operation, the twin-tub operating status that four-way valve commutation will lead to compressor is difficult to maintain, thus
Unit efficiency is reduced, the usage experience of user is affected.
Aiming at the problem that commutation of four-way valve in the prior art is easy to cause the twin-tub state of compressor to be difficult to maintain, at present still
It does not put forward effective solutions.
Summary of the invention
The method, apparatus and unit, air-conditioning system of a kind of control compression machine-cut cylinder are provided in the embodiment of the present invention, to solve
Four-way valve commutation in the prior art is easy to cause the twin-tub state of compressor to be difficult to the problem of maintaining.
In order to solve the above technical problems, in a first aspect, the embodiment of the present invention provide it is a kind of control compression machine-cut cylinder method,
The described method includes:
Receive working mode change instruction；
After receiving working mode change instruction, adjustment system control parameters make operating parameter meet four-way valve commutation item
Part, control four-way valve commutation；
It controls the compressor and twin-tub operational mode is switched to by single cylinder operational mode.
Further, before receiving working mode change instruction, the method also includes:
Determine that the compressor needs to switch to twin-tub operational mode by single cylinder operational mode.
Further, before receiving working mode change instruction, the method also includes:
Determine that the compressor is in twin-tub operational mode；
Before control four-way valve commutation, the method also includes:
It controls the compressor and single cylinder operational mode is switched to by twin-tub operational mode.
Further, after control four-way valve commutation, the method also includes:
Judge whether system pressure difference is in predetermined system pressure difference section；
If it is not, then continuing to adjust the system control parameters makes system pressure difference be in predetermined system pressure difference section；
Wherein, predetermined system pressure difference section is system pressure difference area needed for the compressor maintains twin-tub operational mode
Between.
Further, it is determined that compressor needs switch to twin-tub operational mode by single cylinder operational mode and include:
If the running frequency of the compressor current demand is greater than the compressor single cylinder operational mode Shi Suoneng and reaches
Maximum frequency threshold value, it is determined that the compressor needs to switch to twin-tub operational mode by single cylinder operational mode；
Wherein, the running frequency of the compressor current demand is determined according at least one of following three kinds of factors: being set
The interior machine amount of capacity of unit where determining difference, setting blower gear and the compressor of temperature value and ambient temperature value.
Further, the operating parameter is the running frequency of system pressure difference and the compressor, adjustment system control
Parameter makes operating parameter meet four-way valve commutation condition
The running frequency is improved with pre-set velocity until maximum frequency threshold value；
During improving the running frequency with pre-set velocity, adjust the system control parameters make the system pressure difference and
The running frequency meets the four-way valve commutation condition.
Further, the four-way valve commutation condition are as follows: the system pressure difference is greater than or equal to the default pressure of four-way valve commutation
Difference；And the running frequency and the difference of four-way valve commutation predeterminated frequency are less than or equal to preset difference value；Wherein, the operation frequency
Rate is less than or equal to four-way valve commutation predeterminated frequency.
Further, adjustment system control parameters one of at least include the following steps:
Reduce the revolving speed of outdoor fan and indoor fan；
Reduce the step number of outdoor unit electric expansion valve and electronic expansion valve of indoor unit.
Further, in the case where adjusting system control parameters includes reducing the revolving speed of outdoor fan and indoor fan,
The revolving speed for reducing outdoor fan and indoor fan includes: to control the outdoor fan and indoor fan closing；
It include the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit in adjustment system control parameters
In the case of, the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit includes: that the control outdoor unit electronics is swollen
Swollen valve and the electronic expansion valve of indoor unit are closed.
Further, it controls after the compressor switches to twin-tub operational mode by single cylinder operational mode, the method
Further include:
In the case where adjusting system control parameters includes reducing the revolving speed of outdoor fan and indoor fan, the room is controlled
Outer blower and the indoor fan restore normal operating conditions；
It include the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit in adjustment system control parameters
In the case of, it controls the outdoor unit electric expansion valve and the electronic expansion valve of indoor unit restores normal operating conditions.
Further, the normal operating conditions is automatic control state.
Further, it controls before the compressor switches to twin-tub operational mode by single cylinder operational mode, the method
Further include: single cylinder torque compensation is provided to the compressor.
Further, it controls after the compressor switches to twin-tub operational mode by single cylinder operational mode, the method
Further include: twin-tub torque compensation is provided to the compressor.
Further, before controlling the compressor and switching to twin-tub operational mode by single cylinder operational mode, the side
Method includes:
The first solenoid valve power down is controlled, second solenoid valve powers on, so that the transfiguration mouth of the compressor is low-pressure state；
Wherein, first solenoid valve enables to the exhaust outlet of the compressor to be connected to the transfiguration mouth, and the exhaust ports are
High pressure conditions；The second solenoid valve enables to the air entry of the compressor to be connected to the transfiguration mouth, the air entry
Place is low-pressure state.
Further, it controls the compressor twin-tub operational mode is switched to by single cylinder operational mode and include:
It controls the first solenoid valve to power on, second solenoid valve power down, so that the transfiguration mouth of the compressor is high pressure conditions,
Wherein, first solenoid valve enables to the exhaust outlet of the compressor to be connected to the transfiguration mouth, and the exhaust ports are
High pressure conditions；The second solenoid valve enables to the air entry of the compressor to be connected to the transfiguration mouth, the air entry
Place is low-pressure state.
Further, the operating mode includes refrigeration mode or heating mode.
Second aspect, the embodiment of the present invention provide a kind of unit, and the unit is used to execute method described in first aspect,
The unit includes: master controller, compressor, the drive control device of the compressor and four-way valve,
The master controller, for after the unit receives working mode change instruction, triggering the unit adjustment
System control parameters, so that operating parameter meets four-way valve commutation condition, Xiang Suoshu four-way valve sends control instruction；
The four-way valve is connect with the master controller, for being commutated according to the control instruction received；
The master controller, for after the four-way valve is commutated according to the control instruction received, to institute
It states drive control device transmission and cuts cylinder instruction；
The drive control device is switched to for cutting the cylinder instruction control compressor according to by single cylinder operational mode
Twin-tub operational mode.
The third aspect, the embodiment of the present invention provide a kind of device of control compression machine-cut cylinder, and described device is for executing the
Method described in one side, described device include:
Receiving module, for receiving working mode change instruction；
Control module, for after receiving working mode change instruction, adjustment system control parameters to expire operating parameter
Sufficient four-way valve commutation condition, control four-way valve commutation；It is also used to control the compressor and twin-tub is switched to by single cylinder operational mode
Operational mode.
Fourth aspect, the embodiment of the present invention provide a kind of air-conditioning system, and the air-conditioning system includes described in second aspect
Unit.
Further, the air-conditioning system is frequency conversion transfiguration air-conditioning system.
It applies the technical scheme of the present invention, receives working mode change instruction, after receiving working mode change instruction,
Adjustment system control parameters make operating parameter meet four-way valve commutation condition, and control four-way valve commutation controls compressor by single cylinder
Operational mode switches to twin-tub operational mode, and first control four-way valve commutation, commutates in four-way valve and then carry out cutting cylinder as a result,
It avoids after cutting cylinder, the fluctuation of system pressure difference caused by four-way valve commutates is so that twin-tub state is difficult to the problem of maintaining.It pays the utmost attention to
So that the factor that system pressure difference generates fluctuation has ensured the energy of unit to ensure that compressor is stably maintained at twin-tub operating status
Effect, improves the usage experience of user.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the method for control compression machine-cut cylinder according to an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the method for control compression machine-cut cylinder according to an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the method for control compression machine-cut cylinder according to an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the method for control compression machine-cut cylinder according to an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of unit according to an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of unit according to an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of the device of control compression machine-cut cylinder according to an embodiment of the present invention.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, it should be understood that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
In order to solve the problems, such as that four-way valve commutation is easy to cause the twin-tub state of compressor to be difficult to maintain.The embodiment of the present invention
A kind of method of control compression machine-cut cylinder is provided, as shown in Figure 1, this method comprises:
Step S101, working mode change instruction is received；
Step S102, after receiving working mode change instruction, adjustment system control parameters make operating parameter meet four
Port valve commutation condition, control four-way valve commutation；
Step S103, control compressor switches to twin-tub operational mode by single cylinder operational mode.
Wherein, operating mode is refrigeration mode or heating mode.
In the present embodiment, first control four-way valve commutation, commutates in four-way valve and then carries out cutting cylinder, avoid and first cut
After cylinder, system pressure difference caused by four-way valve commutates is fluctuated so that twin-tub state is difficult to the problem of maintaining, and is paid the utmost attention to so that system
The factor that pressure difference generates fluctuation has ensured the efficiency of unit, has improved to ensure that compressor is stably maintained at twin-tub operating status
The usage experience of user.
In one possible implementation, before step S101, reception working mode change instruction, method is also wrapped
It includes: starting unit.It, can be in two kinds of situation and before step S101.The first situation are as follows: determine that compressor needs are transported by single cylinder
Row pattern switching is specifically included to twin-tub operational mode: if the running frequency of compressor current demand is greater than compressor single cylinder
Institute's attainable maximum frequency threshold value when operation, it is determined that compressor needs to be switched to twin-tub operation mould by single cylinder operational mode
Formula；Wherein, the running frequency of compressor current demand according at least one of following three kinds of factors determine: set temperature value with
Difference, the interior machine amount of capacity of setting blower gear and compressor place machine group end of ambient temperature value.
It is illustrated by air-conditioning of unit, above-mentioned implementation shows when user is to the refrigeration of air-conditioning or heating energy
Force request is higher, so that compressor is in single cylinder operational mode when being unable to satisfy the refrigerating capacity or heating capacity of user demand,
Then compressor can switch to twin-tub operational mode, to promote the cooling or heating capacity of air-conditioning.In an application example,
If ambient temperature value is subzero 30 degrees Celsius, when user needs to open the heating mode of air-conditioning, the temperature set by remote controler
Angle value is 18 degrees Celsius, then the difference of set temperature value and ambient temperature value is larger.If at this point, user sets blower gear again
It, then can be according to above-mentioned parameter and compressor operating frequency for prime time position (showing that user is more demanding to the heating capacity of air conditioner)
Algorithm relationship determines the running frequency of compressor demand.And when judging whether the frequency has exceeded compressor single cylinder operational mode
The maximum frequency threshold value that can bear.If it is, control compressor switches to twin-tub operational mode by single cylinder operational mode, with
Meet the usage experience of user.
In addition, in multi-line system, interior machine capacity, which increases, (for example, user is after the air-conditioning for opening parlor, and to be opened sleeping
The air-conditioning of room) it can also improve requirement to air conditioner refrigerating or heating capacity, then can be unable to satisfy user in single cylinder operational mode needs
When asking, control compressor twin-tub operation.
Second situation are as follows: determine that compressor is in twin-tub operational mode, then commutate it in step S102, control four-way valve
Before, method further include: control compressor switches to single cylinder operational mode by twin-tub operational mode.
It will be appreciated that in twin-tub operational process, switching four-way valve will also result in is compressor in addition to the first situation
The rapid fluctuation of system pressure difference, may result in compressor twin-tub operating status cannot maintain.In an application example, compression
After machine has run a period of time with twin-tub refrigerating state, it is possible that needing to switch to the situation of twin-tub heating state.In order to
Avoid the problem that twin-tub heating state cannot stablize maintenance, can be before control four-way valve commutation, control compressor is transported by twin-tub
After row pattern switching to single cylinder operational mode, then four-way valve commutation is controlled, after four-way valve commutation, then switches to twin-tub, that is, cut
Change of current journey may be expressed as: that twin-tub refrigeration → single cylinder freezes → switches four-way valve, single cylinder heating → twin-tub heating.It may make as a result,
Four-way valve commutation has just been completed before switching to twin-tub heating state, to ensure that compressor is stably maintained at twin-tub operation shape
State has ensured the efficiency of unit, improves the usage experience of user.
In one possible implementation, operating parameter is the running frequency of system pressure difference and compressor, such as Fig. 2 institute
Show, step S102, adjust system control parameters make operating parameter meet four-way valve commutation condition include:
Step S1021, running frequency is improved with pre-set velocity until maximum frequency threshold value；
Step S1022, during improving running frequency with pre-set velocity, adjustment system control parameters make system pressure difference and fortune
Line frequency meets four-way valve commutation condition.
Wherein, four-way valve commutation condition are as follows: system pressure difference is greater than or equal to four-way valve commutation preset pressure；And running frequency
It is less than or equal to preset difference value with the difference of four-way valve commutation predeterminated frequency；Wherein, running frequency is changed less than or equal to four-way valve
To predeterminated frequency.After user issues operating mode switching command to air-conditioning by remote controler, four-way valve will do it commutation.It is existing
In technology, when there is twin-tub operation demand, can directly control compressor twin-tub operation, and if at this point, operational mode switch, four
In a period of time after port valve commutation (such as: 4 or 5 seconds), system high pressure can reduce, system low-voltage can increase, and system pressure difference is
The difference of system high pressure and system low-voltage drastically reduces to will lead to system pressure difference.If compressor is double before four-way valve commutates
Cylinder operating status, then drastically reducing for system pressure difference will lead to the twin-tub state of compressor and be difficult to maintain.If four-way valve commutates
Preceding compressor is single cylinder operating status, but after commutation, but has twin-tub operation demand, system pressure difference at this time is obviously also unable to satisfy
Twin-tub operation demand.Above-mentioned two situations will affect the usage experience of user.To solve this problem, above-mentioned implementation,
After receiving working mode change instruction, the running frequency of compressor is improved until maximum frequency threshold value with pre-set velocity；?
During the running frequency for improving compressor with pre-set velocity, detects and judge whether system pressure difference is greater than or equal to four-way valve commutation
Preset pressure；And whether the running frequency of compressor and the difference of four-way valve commutation predeterminated frequency are less than or equal to preset difference value
(can be 30HZ) can indicate four-way valve commutation condition with formula B-30≤f≤B.Wherein, B is four-way valve commutation predeterminated frequency,
F is running frequency, and preset difference value can be 30HZ.That is, first controlling the running frequency and system pressure difference satisfaction of compressor
Then the commutation condition of four-way valve controls four-way valve commutation.It should be noted that compressor does not switch to twin-tub fortune also at this time
Row.After waiting four-way valve commutation, and system pressure difference keeps stablizing and meeting when cutting cylinder condition, then switches to twin-tub operation.This
When, compressor can be made to be stably maintained at twin-tub operating status, promote the usage experience of user.In a kind of possible realization side
It in formula, can come in the following manner so that system pressure difference, which meets, cuts cylinder condition, i.e., after control four-way valve commutation, judge system
Whether pressure difference is in predetermined system pressure difference section；System pressure difference is set to be in default system if it is not, then continuing adjustment system control parameters
System pressure difference section.
In one possible implementation, as shown in figure 3, in step S103, control compressor by single cylinder operational mode
It switches to before twin-tub operational mode, method further include:
Step S104, single cylinder torque compensation is provided to compressor.
In one possible implementation, as shown in figure 4, in step S103, control compressor by single cylinder operational mode
It switches to after twin-tub operational mode, method further include:
Step S105, twin-tub torque compensation is provided to compressor.
By taking air-conditioning as an example, in the prior art, when user is in low temperature environment, the heating mould for opening air-conditioning is generally required
Formula, when air conditioner has twin-tub operation demand.Environment temperature is lower and air conditioner has just started that will lead to system pressure difference smaller
And ramp-up rate is relatively slow (i.e. system pressure difference establish speed slower), then is not raised to the first predetermined system pressure difference in system pressure difference
When in section, compressor can not actually be in twin-tub operational mode, but with single cylinder mode operation, cause heating effect compared with
Difference.Meanwhile drive control device provides twin-tub torque compensation for compressor, causes compressor body vibration excessive, rotation
Imbalance when serious, will cause the damage of compressor.And in the present embodiment, after starting unit, first guarantee compressor with single cylinder
Operational mode operation, and system pressure difference is gradually increased by adjusting system control parameters, until being in the first predetermined system pressure
Poor section.And in this process, drive control device is that compressor provides single cylinder torque compensation, can avoid vibration of compressor
It is excessive and be damaged.When system pressure difference is in the first predetermined system pressure difference section, i.e., satisfaction switches to twin-tub operational mode
When condition, then controls compressor and twin-tub operational mode is switched to by single cylinder operational mode, then provide twin-tub torque to compressor and mend
It repays, to provide correct and suitable driving force.Thus, it is possible to avoid since torque compensation is not in place or compensation corresponding relationship mistake
And cause compressor damage.
In one possible implementation, adjustment system control parameters one of at least include the following steps:
Reduce the revolving speed of outdoor fan and indoor fan；
Reduce the step number of outdoor unit electric expansion valve and electronic expansion valve of indoor unit.
Wherein, the revolving speed for reducing outdoor fan and indoor fan includes: that control outdoor fan and indoor fan are closed；Reduce
The step number of outdoor unit electric expansion valve and electronic expansion valve of indoor unit includes: the outer machine electric expansion valve of control room and indoor unit electronics
Expansion valve is closed.
Wherein, reduce the revolving speed of outdoor fan so that closing outdoor fan can prevent due to condensation when outdoor fan is opened
Device heat dissipation it is very fast and caused by system high pressure reduce, reduce the revolving speed of indoor fan so that close indoor fan can prevent due to
When indoor fan is opened evaporator heat absorption it is very fast and caused by system low-voltage increase.And system pressure difference is that system high pressure is low with system
The difference of pressure is established rapidly in which can guarantee system pressure difference when system high pressure increases and system low-voltage reduces.And reduce outdoor unit
The step number of electric expansion valve and electronic expansion valve of indoor unit, so that closing outdoor unit electric expansion valve and indoor unit electronic expansion
Valve also results in system pressure difference increase.
Wherein, above-mentioned two step can select an execution or execute parallel, and the present invention is without limitation.
And after step S103, control compressor switch to twin-tub operational mode by single cylinder operational mode, method is also wrapped
It includes: in the case where reducing the revolving speed of outdoor fan and indoor fan, controlling outdoor fan and indoor fan restores to work normally
State；
In the case where reducing the step number of outdoor unit electric expansion valve and electronic expansion valve of indoor unit, the outer electromechanical son of control room
Expansion valve and electronic expansion valve of indoor unit restore normal operating conditions.
Wherein, normal operating conditions can be automatic control state.When compressor switches to twin-tub by single cylinder operational mode
After operational mode, the electric expansion valve of indoor and outdoor and the blower of indoor and outdoor restore automatic control state.Automatically controlling shape
Under state, indoor and outdoor electric expansion valve and indoor and outdoor blower can according to regulation and controlling of information that user is sent by remote controler (such as: wind
Machine gear) and the operational mode (refrigeration or heating mode) of air-conditioning etc. accordingly adjust the control parameter of itself, avoiding influencing
While air-conditioning runs well, meet the needs of users.
In one possible implementation, it step S103, controls compressor and twin-tub fortune is switched to by single cylinder operational mode
Before row mode, method further include:
The first solenoid valve power down is controlled, second solenoid valve powers on, so that the transfiguration mouth of compressor is low-pressure state；
After step S103, control compressor switch to twin-tub operational mode by single cylinder operational mode, method further include:
It controls the first solenoid valve to power on, second solenoid valve power down, so that the transfiguration mouth of compressor becomes high pressure conditions.
Wherein, the first solenoid valve enables to the exhaust outlet of compressor to be connected to transfiguration mouth, and exhaust ports are high pressure conditions；
Second solenoid valve enables to the air entry of compressor to be connected to transfiguration mouth, is low-pressure state at air entry.Wherein, when the first electricity
When magnet valve power down, branch where determining the first solenoid valve is open-circuit condition；When the first solenoid valve powers on, the first solenoid valve is determined
Place branch is channel status；When second solenoid valve power down, branch where determining second solenoid valve is open-circuit condition；When second
When solenoid valve powers on, branch where determining second solenoid valve is channel status.
Compressor can be controlled by the power or power-down of the first solenoid valve and second solenoid valve is in single cylinder state still
Twin-tub state.It is understood that single duplex cylinder compressor is not limited to such structure.
Fig. 5 shows a kind of unit according to an embodiment of the present invention, for executing method shown in above-described embodiment, unit
It include: master controller 1, compressor 2, the drive control device 3 of compressor 2 and four-way valve 6,
Master controller 1, for after unit receives working mode change instruction, triggering unit adjustment system control to be joined
Number sends control instruction to four-way valve 6 so that operating parameter meets 6 commutation condition of four-way valve；Four-way valve 6, with master controller
1 connection, for being commutated according to the control instruction received；Master controller 1, in four-way valve 6 according to the control received
After system instruction is commutated, cylinder instruction is cut to the transmission of drive control device 3；Drive control device 3 cuts cylinder instruction control pressure for basis
Contracting machine 2 switches to twin-tub operational mode by single cylinder operational mode.
In one possible implementation, as shown in Figure 5 and Figure 6, unit further include: be separately connected with compressor 2
High pressure sensor 4 and low pressure sensor 5,
High pressure sensor 4 is used for detection system high pressure；
Low pressure sensor 5 is used for detection system low pressure；
System pressure difference is the difference of system high pressure and system low-voltage.
In one possible implementation, master controller 1 is also used to before receiving working mode change instruction, really
Determine compressor 2 to need to switch to twin-tub operational mode by single cylinder operational mode.If the running frequency of 2 current demand of compressor is big
The attainable maximum frequency threshold value of institute when 2 single cylinder operational mode of compressor, it is determined that compressor 2 is needed by single cylinder operational mode
Switch to twin-tub operational mode；Wherein, the running frequency of 2 current demand of compressor is according at least one of following three kinds of factors
It determines: the interior machine amount of capacity of the difference of set temperature value and ambient temperature value, setting blower gear and machine group end.
In one possible implementation, as shown in Figure 5 and Figure 6, unit further include: the room being connect with master controller 1
Inner blower 7, outdoor fan 8 and outdoor unit electric expansion valve 9 and electronic expansion valve of indoor unit 10, can be by reducing outdoor wind
The side of the step number of the revolving speed and/or reduction outdoor unit electric expansion valve 9 and electronic expansion valve of indoor unit 10 of machine 7 and indoor fan 8
Formula adjusts system control parameters.
Wherein, the revolving speed for reducing outdoor fan 7 and indoor fan 8 may include: to close outdoor fan 7 and indoor fan 8；
The step number for reducing outdoor unit electric expansion valve 9 and electronic expansion valve of indoor unit 10 may include closing 9 He of outdoor unit electric expansion valve
Electronic expansion valve of indoor unit 10.
And after control compressor switches to twin-tub operational mode by single cylinder operational mode, in outdoor fan 7 and indoor wind
In the case that the revolving speed of machine 8 reduces, outdoor fan 7 should be controlled and indoor fan 8 restores normal operating conditions；In outdoor unit electronics
In the case that the step number of expansion valve 9 and electronic expansion valve of indoor unit 10 reduces, the outer machine electric expansion valve 9 of control room and interior are electromechanical
Sub- expansion valve 10 restores normal operating conditions.
Wherein, indoor fan 7 and electronic expansion valve of indoor unit 10 can have multiple, for example, in multi-line system, each room
Inner blower 7 respectively corresponds an indoor electronic expansion valve 10.With an indoor fan 7 and an indoor electronic expansion valve 10 in figure
For.
In one possible implementation, drive control device 3 are also used in control compressor 2 by single cylinder operational mode
It switches to before twin-tub operational mode, provides single cylinder torque compensation to compressor 2, in control compressor 2 by single cylinder operational mode
It switches to after twin-tub operational mode, provides twin-tub torque compensation to compressor 2.
In one possible implementation, as shown in Figure 5 and Figure 6, master controller 1 is also used to drive control device 3
When sending single cylinder operating instruction, 11 power down of the first solenoid valve is controlled, second solenoid valve 12 powers on, so that the transfiguration of compressor 2
Mouth 13 is low-pressure state；It being also used to when cutting cylinder instruction to the transmission of drive control device 3, the first solenoid valve 11 of control powers on, and second
12 power down of solenoid valve, so that the transfiguration mouth 13 of compressor 2 becomes high pressure conditions, wherein the first solenoid valve 11 enables to press
The exhaust outlet of contracting machine 2 is connected to transfiguration mouth 13, and exhaust ports are high pressure conditions；Second solenoid valve 12 enables to compressor 2
Air entry is connected to transfiguration mouth 13, is low-pressure state at air entry.
In one possible implementation, unit further includes gas-liquid separator 14.
First control four-way valve commutation as a result, commutates in four-way valve and then carries out cutting cylinder, avoid after first cutting cylinder, four-way
System pressure difference caused by valve commutates fluctuates so that twin-tub state is difficult to the problem of maintaining, and pays the utmost attention to so that system pressure difference generates wave
Dynamic factor has ensured the efficiency of unit, has improved the use of user to ensure that compressor is stably maintained at twin-tub operating status
Experience.
And in the operation of compressor single cylinder, suitable single cylinder torque compensation is provided for it, it can be to avoid vibration of compressor mistake
It is damaged greatly.
Fig. 7 shows a kind of device of control compression machine-cut cylinder according to an embodiment of the present invention, which is used for first
Method shown in embodiment, device include:
Receiving module 701, for receiving working mode change instruction；
Control module 702, for after receiving working mode change instruction, adjustment system control parameters to make operating parameter
Meet four-way valve commutation condition, control four-way valve commutation；It is also used to control compressor and twin-tub fortune is switched to by single cylinder operational mode
Row mode.
First control four-way valve commutation as a result, commutates in four-way valve and then carries out cutting cylinder, avoid after first cutting cylinder, four-way
System pressure difference caused by valve commutates fluctuates so that twin-tub state is difficult to the problem of maintaining, and pays the utmost attention to so that system pressure difference generates wave
Dynamic factor has ensured the efficiency of unit, has improved the use of user to ensure that compressor is stably maintained at twin-tub operating status
Experience.
The embodiment of the present invention also provides a kind of air-conditioning system, and air-conditioning system includes Fig. 6 and unit shown in Fig. 7.
In one possible implementation, air-conditioning system is frequency conversion transfiguration air-conditioning system.
It can also be multi-line system.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a mobile terminal (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described above in conjunction with figure, but the invention is not limited to above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under enlightenment of the invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (22)
1. a kind of method of control compression machine-cut cylinder, which is characterized in that the described method includes:
Receive working mode change instruction；
After receiving working mode change instruction, adjustment system control parameters make operating parameter meet four-way valve commutation condition,
Control four-way valve commutation；
It controls the compressor and twin-tub operational mode is switched to by single cylinder operational mode.
2. the method according to claim 1, wherein receive working mode change instruction before, the method
Further include:
Determine that the compressor needs to switch to twin-tub operational mode by single cylinder operational mode.
3. the method according to claim 1, wherein receive working mode change instruction before, the method
Further include:
Determine that the compressor is in twin-tub operational mode；
Before control four-way valve commutation, the method also includes:
It controls the compressor and single cylinder operational mode is switched to by twin-tub operational mode.
4. the method according to claim 1, wherein control four-way valve commutation after, the method also includes:
Judge whether system pressure difference is in predetermined system pressure difference section；
If it is not, then continuing to adjust the system control parameters makes system pressure difference be in predetermined system pressure difference section；
Wherein, predetermined system pressure difference section is system pressure difference section needed for the compressor maintains twin-tub operational mode.
5. according to the method described in claim 2, it is characterized in that, determining that the compressor needs are switched by single cylinder operational mode
Include: to twin-tub operational mode
If the running frequency of the compressor current demand is greater than the compressor single cylinder operational mode, when institute is attainable most
Big frequency threshold, it is determined that the compressor needs to switch to twin-tub operational mode by single cylinder operational mode；
Wherein, the running frequency of the compressor current demand is determined according at least one of following three kinds of factors: setting temperature
The interior machine amount of capacity of the difference of angle value and ambient temperature value, setting blower gear and unit where the compressor.
6. the method according to claim 1, wherein the operating parameter is system pressure difference and the compressor
Running frequency, adjustment system control parameters make operating parameter meet four-way valve commutation condition include:
The running frequency is improved with pre-set velocity until maximum frequency threshold value；
During improving the running frequency with pre-set velocity, adjusting the system control parameters makes the system pressure difference and described
Running frequency meets the four-way valve commutation condition.
7. according to the method described in claim 6, it is characterized in that,
The four-way valve commutation condition are as follows: the system pressure difference is greater than or equal to four-way valve commutation preset pressure；And the operation
Frequency and the difference of four-way valve commutation predeterminated frequency are less than or equal to preset difference value；Wherein, the running frequency is less than or equal to
The four-way valve commutation predeterminated frequency.
8. the method according to claim 1, wherein adjustment system control parameters at least include the following steps it
One:
Reduce the revolving speed of outdoor fan and indoor fan；
Reduce the step number of outdoor unit electric expansion valve and electronic expansion valve of indoor unit.
9. according to the method described in claim 8, it is characterized in that,
In the case where adjusting system control parameters includes reducing the revolving speed of outdoor fan and indoor fan, reduce outdoor fan and
The revolving speed of indoor fan includes: to control the outdoor fan and indoor fan closing；
Include the case where the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit in adjustment system control parameters
Under, the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit includes: the control outdoor unit electric expansion valve
It is closed with the electronic expansion valve of indoor unit.
10. according to the method described in claim 8, being switched to it is characterized in that, controlling the compressor by single cylinder operational mode
After twin-tub operational mode, the method also includes:
In the case where adjusting system control parameters includes reducing the revolving speed of outdoor fan and indoor fan, the outdoor wind is controlled
Machine and the indoor fan restore normal operating conditions；
Include the case where the step number for reducing outdoor unit electric expansion valve and electronic expansion valve of indoor unit in adjustment system control parameters
Under, it controls the outdoor unit electric expansion valve and the electronic expansion valve of indoor unit restores normal operating conditions.
11. according to the method described in claim 10, it is characterized in that,
The normal operating conditions is automatic control state.
12. the method according to claim 1, wherein
It controls before the compressor switches to twin-tub operational mode by single cylinder operational mode, the method also includes:
Single cylinder torque compensation is provided to the compressor.
13. the method according to claim 1, wherein
It controls after the compressor switches to twin-tub operational mode by single cylinder operational mode, the method also includes:
Twin-tub torque compensation is provided to the compressor.
14. method described in -13 any one according to claim 1, which is characterized in that transported controlling the compressor by single cylinder
Before row pattern switching to twin-tub operational mode, which comprises
The first solenoid valve power down is controlled, second solenoid valve powers on, so that the transfiguration mouth of the compressor is low-pressure state；Its
In, first solenoid valve enables to the exhaust outlet of the compressor to be connected to the transfiguration mouth, and the exhaust ports are height
Pressure condition；The second solenoid valve enables to the air entry of the compressor to be connected to the transfiguration mouth, at the air entry
For low-pressure state.
15. method described in -13 any one according to claim 1, which is characterized in that control the compressor and run by single cylinder
Pattern switching to twin-tub operational mode includes:
It controls the first solenoid valve to power on, second solenoid valve power down, so that the transfiguration mouth of the compressor is high pressure conditions,
In, first solenoid valve enables to the exhaust outlet of the compressor to be connected to the transfiguration mouth, and the exhaust ports are height
Pressure condition；The second solenoid valve enables to the air entry of the compressor to be connected to the transfiguration mouth, at the air entry
For low-pressure state.
16. method described in any one of -13 according to claim 1, which is characterized in that
The operating mode includes refrigeration mode or heating mode.
17. a kind of unit, which is characterized in that the unit is described for method described in any one of right of execution 1 to power 16
Unit includes: master controller, compressor, the drive control device of the compressor and four-way valve,
The master controller, for after the unit receives working mode change instruction, triggering the unit adjustment system
Control parameter, so that operating parameter meets four-way valve commutation condition, Xiang Suoshu four-way valve sends control instruction；
The four-way valve is connect with the master controller, for being commutated according to the control instruction received；
The master controller, for after the four-way valve is commutated according to the control instruction received, to the drive
Cylinder instruction is cut in movement controller transmission；
The drive control device switches to twin-tub by single cylinder operational mode for cutting the cylinder instruction control compressor according to
Operational mode.
18. a kind of device of control compression machine-cut cylinder, which is characterized in that described device is for right of execution 1 to weighing 16 any one
The method, described device include:
Receiving module, for receiving working mode change instruction；
Control module, for after receiving working mode change instruction, adjustment system control parameters to make operating parameter meet four
Port valve commutation condition, control four-way valve commutation；It is also used to control the compressor and twin-tub operation is switched to by single cylinder operational mode
Mode.
19. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes unit described in power 17.
20. system according to claim 19, which is characterized in that
The air-conditioning system is frequency conversion transfiguration air-conditioning system.
21. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized as described in any one of claims 1 to 16 when executing described program
The method of control compression machine-cut cylinder.
22. a kind of storage medium comprising computer executable instructions, the computer executable instructions are by computer disposal
Method when device executes for executing the control compression machine-cut cylinder as described in any one of claims 1 to 16.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180119.6A CN109538457B (en) | 2018-10-10 | 2018-10-10 | Method and device for controlling cylinder cutting of compressor, unit and air conditioning system |
| PCT/CN2018/122371 WO2020073488A1 (en) | 2018-10-10 | 2018-12-20 | Method, device, unit and air conditioning system for controlling cylinder cutting of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180119.6A CN109538457B (en) | 2018-10-10 | 2018-10-10 | Method and device for controlling cylinder cutting of compressor, unit and air conditioning system |
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| CN109538457A true CN109538457A (en) | 2019-03-29 |
| CN109538457B CN109538457B (en) | 2020-05-22 |
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| CN (1) | CN109538457B (en) |
| WO (1) | WO2020073488A1 (en) |
Cited By (1)
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| CN110542194A (en) * | 2019-09-24 | 2019-12-06 | 珠海格力节能环保制冷技术研究中心有限公司 | compressor control method and device, storage medium, processor and compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109357355B (en) * | 2018-10-19 | 2020-01-03 | 珠海格力电器股份有限公司 | Air conditioner on-off control method |
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| CN109538457B (en) | 2020-05-22 |
| WO2020073488A1 (en) | 2020-04-16 |
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