CN110107500A - A kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method - Google Patents
A kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method Download PDFInfo
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- CN110107500A CN110107500A CN201910470265.0A CN201910470265A CN110107500A CN 110107500 A CN110107500 A CN 110107500A CN 201910470265 A CN201910470265 A CN 201910470265A CN 110107500 A CN110107500 A CN 110107500A
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004378 air conditioning Methods 0.000 claims abstract description 120
- 239000003507 refrigerant Substances 0.000 claims description 109
- 230000001502 supplementing effect Effects 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000005057 refrigeration Methods 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 8
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 description 38
- 230000006835 compression Effects 0.000 description 19
- 238000007906 compression Methods 0.000 description 19
- 230000003247 decreasing effect Effects 0.000 description 18
- 238000005265 energy consumption Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 241000009298 Trigla lyra Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000007701 flash-distillation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000032258 transport Effects 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
-
- 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
- F24F11/70—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
-
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention provides a kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method, the double-cylinder variable-capacity compressor system includes double-cylinder variable-capacity compressor, which is provided with exhaust outlet, air entry and transfiguration mouth；First control valve group, it is connected to the exhaust outlet, the air entry and the transfiguration mouth respectively, for controlling the connection of the transfiguration mouth and the exhaust outlet, single cylinder operation is carried out to control the double-cylinder variable-capacity compressor, or the connection of control the transfiguration mouth and the air entry, twin-tub operation is carried out to control the double-cylinder variable-capacity compressor.Switching of the double-cylinder variable-capacity compressor between single cylinder operation and twin-tub operation is controlled in double-cylinder variable-capacity compressor system of the present invention, by the first control valve group to meet the needs of air conditioner is to different places；It can be avoided air-conditioning still to run when small Space, Place is run with higher load condition, waste electric energy.
Description
Technical field
The present invention relates to air-conditioner field, in particular to a kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control
Method processed.
Background technique
With the continuous improvement of people's living standards, air conditioner is widely used.And the field of employment of air conditioner is complicated,
Compressor is constant volume compressor in conventional air-conditioning system at present, is difficult to meet the place in small space, large space simultaneously.
Summary of the invention
In view of this, the present invention is directed to propose a kind of double-cylinder variable-capacity compressor system, to solve air-conditioning in the prior art
System be difficult to meet simultaneously small space, large space place the problem of.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of double-cylinder variable-capacity compressor system, comprising:
Double-cylinder variable-capacity compressor which is provided with exhaust outlet, air entry and transfiguration mouth；
First control valve group is connected to the exhaust outlet, the air entry and the transfiguration mouth respectively；For controlling
The connection of the transfiguration mouth and the exhaust outlet carries out single cylinder operation to control the double-cylinder variable-capacity compressor；Or described in control
The connection of transfiguration mouth and the air entry carries out twin-tub operation to control the double-cylinder variable-capacity compressor.
Further, first control valve group includes a triple valve, and the first interface of the triple valve, second connect
Mouth, third interface are connected to the transfiguration mouth, the air entry, the exhaust outlet respectively.
Further, first control valve group includes two two-port valves, one of them described two-port valve is set to described
Between transfiguration mouth and the exhaust outlet, another described two-port valve is set between the transfiguration mouth and the air entry.
Further, the double-cylinder variable-capacity compressor includes a transfiguration tank, one end of the transfiguration tank and the triple valve
First interface connection, the other end is connected to the transfiguration mouth of the double-cylinder variable-capacity compressor, and the transfiguration tank is suitable for
Gas-liquid separation is carried out to the refrigerant for entering the double-cylinder variable-capacity compressor from the transfiguration mouth.
Further, the triple valve is solenoid valve.
Compared with the existing technology, double-cylinder variable-capacity compressor system of the present invention has the advantage that
(1) twin-tub is controlled in double-cylinder variable-capacity compressor system of the present invention by the first control valve group of setting to become
The connection of the transfiguration mouth and exhaust outlet of positive displacement compressor or the connection of transfiguration mouth and air entry realize double-cylinder variable-capacity compressor in single cylinder
Switching between operation and twin-tub operation can satisfy air-conditioning when the double-cylinder variable-capacity compressor system is used in air conditioner
Demand of the device to different places, for example air-conditioning, when the operational site of large space works, the load of air-conditioning increases, and needs compressor
Two cylinders work at the same time, to improve working efficiency, meet demand；And air conditioner small space operational site work when,
The load of air-conditioning reduces, compressor with single cylinder operation can meet demand, so as to avoid air-conditioning from running in small Space, Place
When still run with higher load condition, waste electric energy；
(2) transfiguration tank, transfiguration tank are equipped in double-cylinder variable-capacity compressor system of the present invention at the transfiguration mouth of compressor
Gas-liquid separation is carried out to the gaseous coolant flowed back on the pipeline that compressor transfiguration mouth is connected, prevents liquid refrigerants from entering compression
It is undergone phase transition in machine, increases the pressure at transfiguration mouth, influence compressor transfiguration, to ensure that compressor works normally；
Another object of the present invention is to propose a kind of transfiguration increasing enthalpy system, to solve air-conditioning system in the prior art very
It is difficult meet simultaneously small space, large space place the problem of.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of transfiguration increasing enthalpy system, including indoor heat exchanger, orifice union, outdoor heat exchanger and four-way valve, the four-way
4th valve port of valve, the outdoor heat exchanger, the orifice union, the indoor heat exchanger, the four-way valve third valve port
It is sequentially connected；It further include any of the above-described double-cylinder variable-capacity compressor system, the exhaust of the double-cylinder variable-capacity compressor
Mouth, the air entry are connected to the first valve port of the four-way valve, the second valve port respectively；The four-way valve controls the exhaust outlet
It is connected to the outdoor heat exchanger, the air entry is connected to the indoor heat exchanger, or the control exhaust outlet and the room
Interior heat exchanger connection, the air entry are connected to the outdoor heat exchanger, to control the change of refrigerant flow direction.
Further, the gas supplementing opening of the double-cylinder variable-capacity compressor is connected to the outdoor by the second control valve group and changes
Between hot device and the pipeline of indoor heat exchanger connection；In the pipeline that the outdoor heat exchanger is connected with the indoor heat exchanger
Refrigerant under the second control valve group on state, flow to the gas supplementing opening of the double-cylinder variable-capacity compressor.
Further, the double-cylinder variable-capacity compressor further includes increasing enthalpy tank, and the increasing enthalpy tank is arranged in the twin-tub transfiguration
At the gas supplementing opening of compressor, and it is suitable for carrying out gas-liquid to the refrigerant for entering the double-cylinder variable-capacity compressor from the gas supplementing opening
Separation.
Further, second control valve group is two-port valve.
The transfiguration increasing enthalpy system is possessed identical compared with the existing technology with above-mentioned double-cylinder variable-capacity compressor system
Details are not described herein for advantage；Compared with the existing technology, transfiguration increasing enthalpy system of the present invention also has the advantage that
(1) in the pipeline connected between outdoor heat exchanger and indoor heat exchanger in transfiguration increasing enthalpy system of the present invention
It flows to the refrigerant at compressor gas supplementing opening and is ejected into the first cylinder, in the second cylinder from the first gas supplementing opening, the second gas supplementing opening respectively,
The pressure of low pressure refrigerant in compressor is improved, allows compressor side in mesolow to compress edge injection combination cooling, to reach
The effect of increasing enthalpy tonifying Qi improves the capacity of compressor, so that air-conditioning can also promote heating capacity at low ambient temperatures；Pass through
The switching operation of four-way valve, the Lai Shixian air-conditioning change that refrigerant flows in cooling or heating mode, to guarantee that air-conditioning exists
Increasing enthalpy tonifying Qi can be carried out under different operational modes, satisfied the use demand；
(2) increasing enthalpy tank is additionally provided in transfiguration increasing enthalpy system of the present invention, increasing enthalpy tank will be flowed out from flash vessel gas outlet
Refrigerant carry out gas-liquid separation, and liquid refrigerants is stored in increasing enthalpy tank, liquid refrigerants is further prevented to enter in compressor,
To guarantee that compressor works normally.
Another object of the present invention is to propose a kind of transfiguration increasing enthalpy control method, to solve air-conditioning system in the prior art
System be difficult to meet simultaneously small space, large space place the problem of.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of transfiguration increasing enthalpy control method corresponding with above-mentioned transfiguration increasing enthalpy system, comprising:
S1 detects the operational mode of air-conditioning；
S2, if air-conditioning work obtains the operating parameter of air-conditioning in refrigeration or heating mode；
S3, if the operating parameter falls into the first preset range, the first control valve group controls double-cylinder variable-capacity compressor
Transfiguration mouth be connected to exhaust outlet, while judging whether the operating parameter falls into the second preset range；
S4, if the second control valve group is then connected.
Further, after the step S2, the transfiguration increasing enthalpy control method further include:
S5, if the operating parameter falls into third preset range, first control valve group controls the twin-tub and becomes
The transfiguration mouth of positive displacement compressor is connected to air entry.
Further, after the step S5, the transfiguration increasing enthalpy control method further include:
Second control valve group is connected if the operating parameter falls into the 4th preset range in S6；
Wherein, the third preset range includes the 4th preset range.
Further, after the step S5, the transfiguration increasing enthalpy control method further include:
S7, if the operating parameter falls into the 5th preset range, first control valve group controls the transfiguration mouth
It is connected to the exhaust outlet.
Further, the operating parameter include the running frequency of the double-cylinder variable-capacity compressor, it is outdoor environment temperature, cold
Condenser temperature, delivery temperature, pressure at expulsion, indoor environment temperature, evaporator temperature, suction temperature, in pressure at expulsion at least
It is a kind of.
Further, the operating parameter further includes set temperature.
Compared with the existing technology, transfiguration increasing enthalpy control method of the present invention has the advantage that
When air-conditioning local environment is more suitable for, when the current workload demand of air-conditioning is very low, the method in the present embodiment is controllable
Double-cylinder variable-capacity compressor processed enters single cylinder operational mode, and the energy consumption of air-conditioning is reduced under the premise of meeting user and needing；Work as air-conditioning
Local environment slightly severe (such as higher temperatures or compared with low temperature environment) or air-conditioning be in larger space environment, the current load need of air-conditioning
It asks when being increased, the method in the present embodiment can control double-cylinder variable-capacity compressor to enter single cylinder increasing enthalpy fortune by single cylinder operational mode
Row mode, and then the refrigeration or heating effect of air-conditioning are improved, meet user demand.To transfiguration increasing enthalpy control of the present invention
Method processed can control switching of the transfiguration increasing enthalpy system between single cylinder operational mode and single cylinder increasing enthalpy operational mode, to meet air-conditioning
Demand of the device to different places；It can be avoided air-conditioning still to run when small Space, Place is run with higher load condition, waste electric energy.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of double-cylinder variable-capacity compressor system in the embodiment of the present invention；
Fig. 2 is the schematic diagram of another situation of double-cylinder variable-capacity compressor system in the embodiment of the present invention；
Fig. 3 is schematic diagram of the transfiguration increasing enthalpy system when air conditioner refrigerating heats in the embodiment of the present invention；
Fig. 4 is the flow chart of transfiguration increasing enthalpy control method in the embodiment of the present invention；
Indicate the circulation flow direction of refrigerant when air conditioner refrigerating；
Indicate the circulation flow direction of refrigerant when air-conditioning heating.
Description of symbols:
1- positive displacement compressor, the first cylinder of 10-, the second cylinder of 11-, 12- fluid reservoir, 13- transfiguration tank, 14- increasing enthalpy tank, 2-
First control valve group, 21- triple valve, a- first interface, b- second interface, c- third interface, 3- four-way valve, the first valve of d-
Mouthful, the second valve port of e-, f- third valve port, the 4th valve port of g-, 4- outdoor heat exchanger, 41- outdoor heat exchanger first port, the room 42-
External heat exchanger second port, 5- flash vessel, 51- the first refrigerant mouth, 52- the second refrigerant mouth, the gas outlet 53-, 6- indoor heat exchanger,
61- indoor heat exchanger first port, 62- indoor heat exchanger second port, 7- first throttle element, the second restricting element of 8-, 9-
Second control valve group, h- exhaust outlet, j- gas supplementing opening, k- transfiguration mouth, m- air entry, n- gas returning port, the first gas supplementing opening of r-, s-
Two gas supplementing openings.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "high", " low "
Direction or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment 1
As shown in connection with fig. 1, the present embodiment provides a kind of double-cylinder variable-capacity compressor systems, comprising:
Double-cylinder variable-capacity compressor 1 which is provided with exhaust outlet h, air entry m and transfiguration mouth k；
First control valve group 2 is connected to exhaust outlet h, air entry m and transfiguration mouth k respectively；For controlling transfiguration mouth k
With the connection of exhaust outlet h, single cylinder operation is carried out to control double-cylinder variable-capacity compressor 1；Or the company of control transfiguration mouth k and air entry m
It is logical, twin-tub operation is carried out to control double-cylinder variable-capacity compressor 1.
Double-cylinder variable-capacity compressor 1 (hereinafter referred to as compressor 1) includes mutually independent first cylinder 10 and the second cylinder 11,
First cylinder 10 and the second cylinder 11 are connected to exhaust outlet h, and the air entry m of compressor 1 is arranged on the first cylinder 10, transfiguration
Mouth k is arranged on the second cylinder 11.When transfiguration mouth k is connected to exhaust outlet h, compression work of second cylinder 11 without refrigerant,
In idling conditions, only the first cylinder 10 carries out the compression work of refrigerant, the operation of 1 single cylinder of compressor at this time；Transfiguration mouth k and suction
When port m is connected to, the compression work of refrigerant is carried out in the first cylinder 10 and the second cylinder 11, at this time the first cylinder 10 and second
Cylinder 11 works at the same time, the operation of 1 twin-tub of compressor.
In this way, by setting the first control valve group 2 come control transfiguration mouth k and exhaust outlet h connection or transfiguration mouth k with suction
The connection of port m, to realize switching of the compressor 1 between single cylinder operation and twin-tub operation；When the double-cylinder variable-capacity compressor system
When system is used in air conditioner, demand of the air-conditioning to different places, such as air-conditioning can satisfy in the operational site work of large space
When making, the load of air-conditioning increases, and needs two cylinders of compressor 1 to work at the same time, to improve working efficiency, meet demand；And
When the operational site in small space works, the load of air-conditioning reduces air conditioner, compressor 1 with single cylinder operation can meet demand,
So as to avoid air-conditioning from still running when small Space, Place is run with higher load condition, electric energy is wasted.
Optionally, as shown in connection with fig. 2, the first control valve group 2 includes two two-port valves, and one of two-port valve, which is set to, to be become
Hold between mouth k and exhaust outlet h, another two-port valve is set between transfiguration mouth k and air entry m；It can also be other types valve
Combination, does not illustrate in the present embodiment herein.
When first control valve group 2 includes two two-port valves, one end of the two two-port valves be connected with each other after again with compression
The transfiguration mouth k of machine 1 is connected to, and the other end of the two two-port valves is connected to the exhaust outlet h of compressor 1, air entry m respectively.It utilizes
Two two-port valves control the connection of transfiguration mouth k and exhaust outlet h or the connection of transfiguration mouth k and air entry m respectively.
The present embodiment preferably the first control valve group 2 includes a triple valve 21, the first interface a of triple valve 21, second
Interface b, third interface c are connected to transfiguration mouth k, air entry m, the exhaust outlet h of compressor 1 respectively, and the first of triple valve 21 connects
Mouth a is optionally connected with second interface b or third interface c.
When first interface a is connected with third interface c, triple valve 21 is in the first on state, at this time transfiguration mouth k and row
Port h connection；When first interface a is connected with second interface b, triple valve 21 is in the second on state, at this time transfiguration mouth k with
Air entry m connection.
In this way, compare with using two two-port valves, when the first control valve group 2 is triple valve 21, the control of system
It is better effect processed, at low cost, and be easier to control using a valve, it is run with twin-tub in single cylinder operation convenient for compressor 1
Between switching.
Further, triple valve 21 is solenoid valve.
When triple valve 21 powers off, first interface a is connected with third interface c, the operation of 1 single cylinder of compressor；Triple valve 21 is powered
When, first interface a is connected with second interface b；The operation of 1 twin-tub of compressor.It is run in this way, being easier to control compressor 1 in single cylinder
It is and simple, convenient with the switching between twin-tub operation, it is easy to accomplish.
Compressor 1 is compressed in the low pressure refrigerant sucking compressor 1 that will back flow at air entry m, and it is cold to form high pressure
Matchmaker, and be discharged from exhaust outlet h.In the first on state, transfiguration mouth k is connected to triple valve 21 with exhaust outlet h, exhaust outlet h discharge
High pressure refrigerant understand some by triple valve 21, enter the second cylinder 11 from transfiguration mouth k, this partial high pressure refrigerant is second
Second compression again is not needed in cylinder 11, but is directly discharged from exhaust outlet h, so that compression work of second cylinder 11 without refrigerant
Make, i.e. the second cylinder 11 be in idling conditions, and the first cylinder 10 is by air entry m sucking low pressure refrigerant, and by low pressure refrigerant pressure
It shortens high pressure refrigerant into, is discharged from exhaust outlet h, so the single cylinder operation to realize compressor 1；Triple valve 21 is in the second on state
When, transfiguration mouth k is connected to air entry m, and the first cylinder 10 and the second cylinder 11 suck low pressure cold by air entry m, transfiguration mouth k respectively
Matchmaker, and low pressure refrigerant is compressed into high pressure refrigerant, it is discharged from exhaust outlet h, so the twin-tub operation to realize compressor 1.
Double-cylinder variable-capacity compressor system as described above, wherein double-cylinder variable-capacity compressor 1 includes a transfiguration tank 13, is become
The one end for holding tank 13 is connected to the first interface a of triple valve 21, and the other end is connected to the transfiguration mouth k of double-cylinder variable-capacity compressor 1, is become
Hold tank 13 to be suitable for carrying out gas-liquid separation to the refrigerant for entering double-cylinder variable-capacity compressor 1 from transfiguration mouth k.
As shown in connection with fig. 1, one end of transfiguration tank 13 is connected to by triple valve 21 with exhaust outlet h or air entry m, the other end and
Transfiguration mouth k connection.When transfiguration tank 13 is connected to air entry m, toward air entry m reflux gaseous coolant some enter and become
In the pipeline for holding mouth k connection, which can first pass through transfiguration tank 13 before entering compressor 1 from transfiguration mouth k and carry out gas-liquid
Separation, is equivalent to and gaseous coolant is dried.
This way it is possible to avoid mixed a small amount of liquid refrigerants enters in compressor 1 in gaseous coolant, and in compressor 1
Interior generation evaporation gasification, increases the pressure at transfiguration mouth k, influences 1 transfiguration of compressor, to ensure that compressor 1 works normally.
Embodiment 2
As shown in connection with fig. 3, the present embodiment provides a kind of transfiguration increasing enthalpy systems, including indoor heat exchanger 6, orifice union, room
External heat exchanger 4 and four-way valve 3, the 4th valve port g, outdoor heat exchanger 4, orifice union, the indoor heat exchanger 6, four-way valve of four-way valve 3
3 third valve port f is sequentially connected；It further include any double-cylinder variable-capacity compressor system, twin-tub transfiguration pressure in embodiment one
Exhaust outlet h, the air entry m of contracting machine 1 are connected to the first valve port d of four-way valve 3, the second valve port e respectively；The control exhaust of four-way valve 3
Mouthful h is connected to outdoor heat exchanger 4, air entry m is connected to indoor heat exchanger 6, or control exhaust outlet h be connected to indoor heat exchanger 6,
Air entry m is connected to outdoor heat exchanger 4, to control the change of refrigerant flow direction.
Four-way valve 3 has the first valve port d, the second valve port e, third valve port f and the 4th valve port g, the first valve port d and third valve
A connection in mouth f, the 4th valve port g, the second valve port e are connected to another in third valve port f, the 4th valve port g；And first
Valve port d, the second valve port e, third valve port f, interior of the 4th valve port g respectively with exhaust outlet h, air entry m, indoor heat exchanger 6 are changed
Hot device second port 62, the connection of the outdoor heat exchanger first port 41 of outdoor heat exchanger 4, the outdoor heat exchanger of outdoor heat exchanger 4
Second port 42 is connect by orifice union with the indoor heat exchanger first port 61 of indoor heat exchanger 6, in this way, to form transfiguration
The circuit of increasing enthalpy system.
In this way, being in different on states by the first control valve group 2 whether to control in compressor 1 two cylinders
Connection realizes that compressor 1 runs the switching between twin-tub operation in single cylinder, to meet the needs of air conditioner is to different places；
By the switching operation of four-way valve 3, in cooling or heating mode, compressor 1 carries out refrigerant flow direction to Lai Shixian air-conditioning
Change, to guarantee that air-conditioning can keep efficiency operation under different operational modes, satisfies the use demand；It can also keep away simultaneously
Exempt from air-conditioning still to run when small Space, Place is run with higher load condition, wastes electric energy.
Transfiguration increasing enthalpy system as described above, as shown in connection with fig. 3, wherein the gas supplementing opening j of double-cylinder variable-capacity compressor 1 is logical
The second control valve group 9 is crossed to be connected between the pipeline that outdoor heat exchanger 4 and indoor heat exchanger 6 connect；Outdoor heat exchanger 4 and room
The refrigerant in pipeline that interior heat exchanger 6 connects flows to double-cylinder variable-capacity compressor 1 under 9 on state of the second control valve group
Gas supplementing opening j.
The gas supplementing opening j of compressor 1 points are the first gas supplementing opening r and the second gas supplementing opening s, the first gas supplementing opening r and the first cylinder 10
Connection, the second gas supplementing opening s are connected to the second cylinder 11；When compressor 1 works, connect between outdoor heat exchanger 4 and indoor heat exchanger 6
After the refrigerant in pipeline connect flows at the gas supplementing opening j of compressor 1, it is ejected into respectively from the first gas supplementing opening r, the second gas supplementing opening s
In first cylinder 10, the second cylinder 11.
In this way, improving the pressure of low pressure refrigerant in compressor 1, make the side compression edge injection in mesolow of compressor 1 mixed
Cooling is closed, to have the function that increasing enthalpy tonifying Qi, the capacity of compressor 1 is improved, so that air-conditioning also can at low ambient temperatures
Promote heating capacity.
When compressor 1 is run with single cylinder, what is sucked in the second cylinder 11 is high pressure refrigerant, is sprayed from the second gas supplementing opening s
It is still high pressure refrigerant after refrigerant is mixed with the high pressure refrigerant of sucking in the second cylinder 11, is directly discharged, that is, sprays from exhaust outlet h
The refrigerant in the second cylinder 11 is mapped to without compression work, and the refrigerant being ejected into the first cylinder 10 and the first cylinder 10 are inhaled
After the low pressure refrigerant mixing entered, mesolow refrigerant is formed, and compressed in the first cylinder 10, forms high pressure refrigerant from exhaust
Mouth h discharge, so the single cylinder increasing enthalpy to realize compressor 1；When compressor 1 is run with twin-tub, the first cylinder 10, the second cylinder
11 suck is low pressure refrigerant, be ejected into the first cylinder 10, the refrigerant in the second cylinder 11 respectively in the two cylinders with
Low pressure refrigerant is mixed to form mesolow refrigerant, and carries out compression work, forms high pressure refrigerant and is discharged from exhaust outlet h, so with reality
The twin-tub increasing enthalpy of existing compressor 1.
Preferably the second control valve group 9 is two-port valve in the present embodiment, in this way, convenient for the flow direction of refrigerant in control piper.
Further, the second control valve group 9 is electromagnetism two-port valve, when electromagnetism two-port valve is powered, compressor 1 and flash vessel
Pipeline conducting between 5；When electromagnetism two-port valve powers off, the pipeline between compressor 1 and flash vessel 5 is blocked.
In this way, there is switching characteristic using solenoid valve, can more accurately control cold between compressor 1 and flash vessel 5
The conducting or blocking of matchmaker's pipeline, it is simple, convenient, it is easy to accomplish.
Transfiguration increasing enthalpy system as described above, as shown in connection with fig. 3, wherein transfiguration increasing enthalpy system further includes flash vessel 5,
Orifice union includes first throttle element 7 and the second restricting element 8, and the first refrigerant mouth 51 of flash vessel 5 passes through first throttle member
Part 7 is connected to indoor heat exchanger 6, and the second refrigerant mouth 52 of flash vessel 5 is connected to by the second restricting element 8 with outdoor heat exchanger 4,
The gas outlet 53 of flash vessel 5 is connected to by the second control valve group 9 with the gas supplementing opening j of double-cylinder variable-capacity compressor 1, the second control valve
Component 9 controls the conducting or blocking of the pipeline between double-cylinder variable-capacity compressor 1 and flash vessel 5.
First throttle element 7 is arranged on the pipeline between outdoor heat exchanger 4 and flash vessel 5, i.e., the first of flash vessel 5 is cold
Matchmaker mouthful 51 is connected to by first throttle element 7 with indoor heat exchanger 6；The setting of second restricting element 8 is in flash vessel 5 and indoor heat exchange
On pipeline between device 6, i.e., the second refrigerant mouth 52 of flash vessel 5 is connected to by the second restricting element 8 with outdoor heat exchanger 4.
In this way, the load in air-conditioning reduces, when not needing the progress increasing enthalpy tonifying Qi of compressor 1, the second control of control can be passed through
Valve module 9 blocks the pipeline between compressor 1 and flash vessel 5, stops increasing enthalpy tonifying Qi, is disappeared with reducing the unnecessary of refrigerant
Consumption；And increase in the load of air-conditioning, when compressor 1 being needed to carry out increasing enthalpy tonifying Qi, it can be led by the second control valve group 9 of control
Pipeline between logical compressor 1 and flash vessel 5, allows compressor 1 to carry out increasing enthalpy tonifying Qi, to guarantee that air-conditioning under high load also can be just
Often operation, so that air-conditioning can adapt to different operational site and environment, use scope is wider.
Transfiguration increasing enthalpy system as described above, as shown in connection with fig. 3, wherein double-cylinder variable-capacity compressor 1 further includes increasing enthalpy tank
14, increasing enthalpy tank 14 is arranged at the gas supplementing opening j of double-cylinder variable-capacity compressor 1, and is suitable for entering twin-tub transfiguration compression to from gas supplementing opening j
The refrigerant of machine 1 carries out gas-liquid separation.
The refrigerant entered in compressor 1 from gas supplementing opening j can be injected into cylinder, formed high-speed flow, when from gas supplementing opening j into
When being mixed into liquid refrigerants in the refrigerant entered, liquid refrigerants is injected into cylinder, hits cylinder inner wall with high-speed flow, causes liquid
It hits.
The setting of increasing enthalpy tank 14, so that the refrigerant in compressor 1 is flowed into before entering gas supplementing opening j from gas supplementing opening j, it can be advanced
Enter into increasing enthalpy tank 14, carries out gas-liquid separation or drying, in increasing enthalpy tank 14 to prevent liquid refrigerants from entering compressor 1
It is interior, so that the cylinder of compressor 1 be protected to be not readily susceptible to liquid hammer, improve the service life of compressor 1.
Transfiguration increasing enthalpy system as described above, as shown in connection with fig. 3, wherein double-cylinder variable-capacity compressor 1 includes a fluid reservoir
12, it is flowed out when fluid reservoir 12 is suitable for storing refrigeration from the refrigerant that indoor heat exchanger 6 flows out or when heating from outdoor heat exchanger 4
The refrigerant come.
Gas returning port n is set on fluid reservoir 12, when air conditioner refrigerating from the refrigerant or heating that indoor heat exchanger 6 flows out from
The refrigerant that outdoor heat exchanger 4 flows out can all be flowed back into fluid reservoir 12 from gas returning port n and be stored.
The setting of fluid reservoir 12, the refrigerant that on the one hand can be will back flow at gas returning port n is collected, for transfiguration
Increasing enthalpy system circulation uses, and effectively saves the use of refrigerant, reduces use cost；On the other hand, reflux can also be allowed
Refrigerant in mixed a small amount of liquid refrigerants gasification is evaporated in fluid reservoir 12, to prevent liquid refrigerants from entering compressor 1
In cylinder, 1 compressed gaseous refrigerant of compressor is influenced, to be further ensured that transfiguration increasing enthalpy system worked well.
When air-conditioning carries out refrigeration cycle, the first valve port d of four-way valve 3 is connected with the 4th valve port g and the second valve port e and third
Valve port f conducting.
When compressor 1 runs progress increasing enthalpy with twin-tub, the gaseous coolant of Room-temperature low-pressure is inhaled from air entry m, transfiguration mouth k respectively
Enter into the first cylinder 10, the second cylinder 11, the gaseous state that high temperature and pressure is compressed into the first cylinder 10, the second cylinder 11 is cold
The gaseous coolant of matchmaker, high temperature and pressure are discharged from exhaust outlet h, successively pass through the first valve port d, the 4th valve port g of four-way valve 3, from room
External heat exchanger first port 41 is entered in outdoor heat exchanger 4 and is condensed, the gaseous coolant of high temperature and pressure in outdoor heat exchanger 4 with
Outdoor environment forms the liquid refrigerants pressed in low temperature after being exchanged heat, the liquid refrigerants pressed in low temperature is from outdoor heat exchanger second end
Mouth 42 is discharged, and by the reducing pressure by regulating flow of first throttle element 7, forms the gas-liquid two-phase refrigerant pressed in low temperature, the gas pressed in low temperature
Liquid two-phase refrigerant enters flash vessel 5 from the first refrigerant mouth 51, and gas-liquid separation is carried out in flash vessel 5, separates from flash vessel 5
It presses gaseous coolant to be discharged from gas outlet 53 in low temperature out, flows through the second control valve group 9, into being done in increasing enthalpy tank 14
Dry, pressure gaseous coolant sprays into the first gas from the first gas supplementing opening r, the second gas supplementing opening s respectively at gas supplementing opening j in the low temperature after drying
It in cylinder 10, the second cylinder 11, is discharged, continues from the exhaust outlet h of compressor 1 after compression forms the gaseous coolant of high temperature and pressure
It is recycled；The liquid refrigerants pressed from the low temperature isolated in flash vessel 5 is flowed out from the second refrigerant mouth 52, by the second throttling
The liquid refrigerants that low-temp low-pressure is formed after the reducing pressure by regulating flow of element 8, enters indoor heat exchange from indoor heat exchanger first port 61
In device 6, the liquid refrigerants of low-temp low-pressure carries out heat exchange in heat exchanger 6 with indoor environment indoors and undergoes phase transition, to indoor environment
Freeze, forms the gaseous coolant of Room-temperature low-pressure, and be discharged from indoor heat exchanger second port 62, successively pass through four-way valve 3
Third valve port f, the second valve port e, return in fluid reservoir 12, then enter in compressor 1 from air entry m, complete double from gas returning port n
Refrigeration cycle when cylinder increasing enthalpy.
Compressor 1 with single cylinder run carry out increasing enthalpy when, the second cylinder 11 by transfiguration mouth k suck be high temperature and pressure gaseous state
Refrigerant is directly discharged from exhaust outlet h without overcompression, and the gaseous coolant of Room-temperature low-pressure is only drawn into the first cylinder from air entry m
In 10, it is compressed into the gaseous coolant of high temperature and pressure in the first cylinder 10, is discharged from exhaust outlet h；High temperature after the discharge of compressor 1
The gaseous coolant of high pressure followed by four-way valve 3, outdoor heat exchanger 4, first throttle element 7, flash vessel 5, divide from flash vessel 5
It separates out pressure gaseous coolant in the low temperature come and sprays into the first cylinder from the first gas supplementing opening r, the second gas supplementing opening s respectively at gas supplementing opening j
10, it in the second cylinder 11, sprays into the low temperature in the second cylinder 11 and presses the high temperature and pressure of gaseous coolant and the sucking of the second cylinder 11
Gaseous coolant mixing after, be still the gaseous coolant of high temperature and pressure, compression work of second cylinder 11 without refrigerant sprays into the
It presses gaseous coolant to mix with the low-temp low-pressure refrigerant in the first cylinder 10 in low temperature in one cylinder 10, is pressed by the first cylinder 10
Contracting forms the gaseous coolant of high temperature and pressure, and the gaseous coolant for the high temperature and pressure being discharged from the first cylinder 10 and the second cylinder 11 is by pressing
The exhaust outlet h of contracting machine 1 is discharged, and continues to recycle, the liquid refrigerants pressed from the low temperature that flash vessel 5 is separated successively passes through
Second restricting element 8, indoor heat exchanger 6, four-way valve 3, then flow back into fluid reservoir 12 from gas returning port n, then from air entry m into
Enter in compressor 1, completes refrigeration cycle when single cylinder increasing enthalpy.
When air-conditioning carries out heating circulation, the first valve port d of four-way valve 3 is connected with third valve port f and the second valve port e and the 4th
Valve port g conducting.
When compressor 1 runs progress increasing enthalpy with twin-tub, the gaseous coolant of Room-temperature low-pressure is inhaled from air entry m, transfiguration mouth k respectively
Enter into the first cylinder 10, the second cylinder 11, the gaseous state that high temperature and pressure is compressed into the first cylinder 10, the second cylinder 11 is cold
The gaseous coolant of matchmaker, high temperature and pressure are discharged from exhaust outlet h, successively pass through the first valve port d, the third valve port f of four-way valve 3, from room
Interior heat exchanger second port 62 enters in indoor heat exchanger 6, the gaseous coolant of high temperature and pressure indoors in heat exchanger 6 with interior
Environment carries out phase-change heat-exchange, to heat to indoor environment, forms the liquid refrigerants pressed in low temperature after heat exchange, presses in low temperature
Liquid refrigerants is discharged from indoor heat exchanger first port 61, by the reducing pressure by regulating flow of the second restricting element 8, presses in formation low temperature
Gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant pressed in low temperature enter flash vessel 5 from the second refrigerant mouth 52, and in flash vessel 5 into
Row gas-liquid separation presses gaseous coolant to be discharged from gas outlet 53, flows through the second control valve from the low temperature separated in flash vessel 5
9, into being dried in increasing enthalpy tank 14, pressure gaseous coolant sprays into the first cylinder 10, second by gas supplementing opening j in the low temperature after drying
In cylinder 11, it is discharged after compression forms the gaseous coolant of high temperature and pressure from the exhaust outlet h of compressor 1, continues to recycle；
The liquid refrigerants pressed from the low temperature isolated in flash vessel 5 is flowed out from the first refrigerant mouth 51, by the section of first throttle element 7
The liquid refrigerants that low-temp low-pressure is formed after stream decompression, enters in outdoor heat exchanger 4 from outdoor heat exchanger second port 42, in room
The gaseous coolant of Room-temperature low-pressure is formed in external heat exchanger 4 after evaporation and heat-exchange, and is discharged from outdoor heat exchanger first port 41, according to
Secondary the 4th valve port g by four-way valve 3, the second valve port e, return in fluid reservoir 12, then enter pressure from air entry m from gas returning port n
In contracting machine 1, heating circulation when twin-tub increasing enthalpy is completed.
Compressor 1 with single cylinder run carry out increasing enthalpy when, the second cylinder 11 by transfiguration mouth k suck be high temperature and pressure gaseous state
Refrigerant is directly discharged from exhaust outlet h without overcompression, and the gaseous coolant of Room-temperature low-pressure is only drawn into the first cylinder from air entry m
In 10, it is compressed into the gaseous coolant of high temperature and pressure in the first cylinder 10, is discharged from exhaust outlet h；High temperature after the discharge of compressor 1
The gaseous coolant of high pressure followed by four-way valve 3, air-conditioning indoor heat exchanger 6, the second restricting element 8, flash vessel 5, from flash distillation
Gaseous coolant is pressed to spray into first from the first gas supplementing opening r, the second gas supplementing opening s respectively at gas supplementing opening j in the low temperature that device 5 is separated
In cylinder 10, the second cylinder 11, sprays into the low temperature in the second cylinder 11 and press the high temperature of gaseous coolant and the sucking of the second cylinder 11
It is still the gaseous coolant of high temperature and pressure, compression work of second cylinder 11 without refrigerant, spray after the gaseous coolant mixing of high pressure
Entering in the low temperature in the first cylinder 10 presses gaseous coolant to mix with the low-temp low-pressure refrigerant in the first cylinder 10, by the first cylinder
10 compressions form the gaseous coolant of high temperature and pressure, the gaseous coolant for the high temperature and pressure being discharged from the first cylinder 10 and the second cylinder 11
It is discharged by the exhaust outlet h of positive displacement compressor 1, continues to recycle, the liquid refrigerants pressed from the low temperature that flash vessel 5 is separated
Successively pass through first throttle element 7, outdoor heat exchanger 4, four-way valve 3, is then flowed back into fluid reservoir 12 from gas returning port n, then from
Air entry m enters in compressor 1, completes heating circulation when single cylinder increasing enthalpy.
To sum up, single cylinder, single cylinder increasing enthalpy, twin-tub, four kinds of twin-tub increasing enthalpy may be implemented in the transfiguration increasing enthalpy system in the present embodiment
The switching of operational mode, the transfiguration increasing enthalpy system are suitable for the air-conditioning system of field of employment complexity, can meet room temperature, height simultaneously
Temperature, low temperature, small space, extra space place realize more energy efficient operation while meeting user demand.
Embodiment 3
As shown in connection with fig. 4, the present embodiment provides a kind of transfiguration increasing enthalpy control method corresponding with above-mentioned transfiguration increasing enthalpy system,
Include:
S1, the operational mode for detecting air-conditioning；
Wherein, the operational mode includes refrigeration mode, heating mode, defrosting mode and dehumidification mode.Air-conditioning is defrosting
Under mode and dehumidification mode, double-cylinder variable-capacity compressor 1 is out of service.
If S2, air-conditioning work obtain the operating parameter of air-conditioning in refrigeration or heating mode；
If S3, the operating parameter fall into the first preset range, the first control valve group controls double-cylinder variable-capacity compressor 1
Transfiguration mouth k be connected to exhaust outlet h, while judging whether the operating parameter falls into the second preset range；
Wherein, the operating parameter falls into the first preset range, and representing air-conditioning current environment is more suitable for that air-conditioning is worked as
Preceding refrigeration and heating effect can satisfy the demand of user substantially, and it is very low to represent the current workload demand of air-conditioning；First control
After the transfiguration mouth k of valve module control double-cylinder variable-capacity compressor 1 is connected to exhaust outlet h, double-cylinder variable-capacity compressor 1 enters single cylinder and runs
Mode.
If the second control valve group then S4, is connected；
Wherein, the operating parameter falls into the second preset range, represents that air-conditioning current environment is slightly severe, and air-conditioning is worked as
Preceding refrigeration and heating effect is difficult to meet the needs of users, and represents the current workload demand of air-conditioning and is increased than before；It leads
After logical second control valve group, double-cylinder variable-capacity compressor 1 enters single cylinder increasing enthalpy operational mode by single cylinder operational mode.
It should be noted that for ease of description, hereinafter using the first control valve group as triple valve 2, the second control valve group
Part is that two-port valve 9 is illustrated the transfiguration increasing enthalpy control method, but cannot be formed to the transfiguration increasing enthalpy control method
Limitation.When the first interface a of triple valve 2 is connected with third interface c, triple valve 2 is in the first on state, and twin-tub becomes at this time
The transfiguration mouth k of positive displacement compressor 1 is connected to exhaust outlet h；When the first interface a of triple valve 2 is connected with second interface b, triple valve 2
In the second on state, the transfiguration mouth k of double-cylinder variable-capacity compressor 1 is connected to air entry m at this time.
Under original state, default triple valve 2 is in the first on state, and two-port valve 9 disconnects.
Wherein, if the operating parameter falls into the first preset range, triple valve 2 controls the change of double-cylinder variable-capacity compressor 1
Hold mouth k to be connected to exhaust outlet h, compression work of second cylinder 11 without refrigerant is in idling conditions, at this time only the first gas
Cylinder 10 carries out the compression work of refrigerant, and double-cylinder variable-capacity compressor 1 enters single cylinder operational mode.
Wherein, if the operating parameter falls into the second preset range, two-port valve 9 is connected, thus double-cylinder variable-capacity compressor 1
Pipeline between flash vessel 5 is connected, and what is sucked in the second cylinder 11 is high pressure refrigerant, is ejected into second from the second gas supplementing opening s
It is still high pressure refrigerant after refrigerant is mixed with the high pressure refrigerant of sucking in cylinder 11, is directly discharged from exhaust outlet h, that is, is ejected into the
Refrigerant in two cylinders 11 without compression work, and the refrigerant being ejected into the first cylinder 10 sucked with the first cylinder 10 it is low
After pressing refrigerant mixing, mesolow refrigerant is formed, and compressed in the first cylinder 10, forms high pressure refrigerant and arranged from exhaust outlet h
Out, double-cylinder variable-capacity compressor 1 enters single cylinder increasing enthalpy operational mode by single cylinder operational mode.
In this way, when air-conditioning local environment is more suitable for, method when the current workload demand of air-conditioning is very low, in the present embodiment
Controllable double-cylinder variable-capacity compressor 1 enters single cylinder operational mode, and the energy consumption of air-conditioning is reduced under the premise of meeting user and needing；When
Air-conditioning local environment slightly severe (such as higher temperatures or compared with low temperature environment) or air-conditioning be in larger space environment, and air-conditioning is current to be born
When lotus demand is increased, the method in the present embodiment can control double-cylinder variable-capacity compressor 1 to enter single cylinder by single cylinder operational mode
Increasing enthalpy operational mode, and then the refrigeration or heating effect of air-conditioning are improved, meet user demand.
Further, after step S2, the transfiguration increasing enthalpy control method further include:
If S5, the operating parameter fall into third preset range, first control valve group controls the twin-tub and becomes
The transfiguration mouth k of positive displacement compressor 1 is connected to air entry m.
Wherein, the operating parameter falls into third preset range, and it is higher to represent the current workload demand of air-conditioning；Triple valve 2
Into after the second on state, double-cylinder variable-capacity compressor 1 enters twin-tub operational mode.
Wherein, step S5 and step S3 is parallel step.In this way, when more severe (such as high temperature or low of air-conditioning local environment
Warm environment) or air-conditioning be in large space environment, when the current workload demand of air-conditioning is higher, method in the present embodiment is controllable double
Cylinder positive displacement compressor 1 enters twin-tub operational mode, and then greatly improves the refrigeration or heating effect of air-conditioning, meets user's need
It asks.
Further, after step S5, the transfiguration increasing enthalpy control method further include:
If S6, the operating parameter fall into the 4th preset range, second control valve group is connected；
Wherein, the third preset range includes the 4th preset range.
Wherein, the operating parameter falls into the 4th preset range, and it is high to represent the current workload demand of air-conditioning；Two-way is connected
After valve 9, double-cylinder variable-capacity compressor 1 enters twin-tub increasing enthalpy operational mode.
In this way, when air-conditioning local environment extremely severe (such as very high temperature or pole low temperature environment) or air-conditioning are in Maximum Space ring
Border, when the current workload demand of air-conditioning is high, the method in the present embodiment can control double-cylinder variable-capacity compressor 1 to run mould by twin-tub
Formula enters twin-tub increasing enthalpy operational mode, and then further increases the refrigeration or heating effect of air-conditioning, meets user demand.
Further, after step S5, the transfiguration increasing enthalpy control method further include:
If S7, the operating parameter fall into the 5th preset range, first control valve group controls the transfiguration mouth k
It is connected to the exhaust outlet h.
Wherein, the operating parameter falls into the 5th preset range by third preset range, and representing the current load of air-conditioning needs
Ask decreased；After triple valve 2 enters the first on state, double-cylinder variable-capacity compressor 1 enters single cylinder by twin-tub operational mode and transports
Row mode.
In this way, method in the present embodiment can control twin-tub transfiguration pressure when the current workload demand of air-conditioning is decreased
Contracting machine 1 enters single cylinder operational mode by twin-tub operational mode, and the energy consumption of air-conditioning is reduced under the premise of meeting user demand.
Further, after step S4, the transfiguration increasing enthalpy control method further include:
If S8, the operating parameter fall into the 6th preset range, second control valve group is disconnected；
Wherein, first preset range includes the 6th preset range.
Wherein, the operating parameter falls into the 6th preset range by the second preset range, and representing the current load of air-conditioning needs
Ask decreased；After disconnecting two-port valve 9, double-cylinder variable-capacity compressor 1 enters single cylinder operational mode by single cylinder increasing enthalpy operational mode.
In this way, method in the present embodiment can control twin-tub transfiguration pressure when the current workload demand of air-conditioning is decreased
Contracting machine 1 enters single cylinder operational mode by single cylinder increasing enthalpy operational mode, and the energy consumption of air-conditioning is reduced under the premise of meeting user demand.
Further, after step S6, the transfiguration increasing enthalpy control method further include:
If S9, the operating parameter fall into the 7th preset range, second control valve group is disconnected；
Wherein, the operating parameter falls into the 7th preset range by the 4th preset range, and representing the current load of air-conditioning needs
Ask decreased；After disconnecting two-port valve 9, double-cylinder variable-capacity compressor 1 enters twin-tub operational mode by twin-tub increasing enthalpy operational mode.
In this way, method in the present embodiment can control twin-tub transfiguration pressure when the current workload demand of air-conditioning is decreased
Contracting machine 1 enters twin-tub operational mode by twin-tub increasing enthalpy operational mode, and the energy consumption of air-conditioning is reduced under the premise of meeting user demand.
To sum up, which can control transfiguration increasing enthalpy system to realize single cylinder, single cylinder increasing enthalpy, twin-tub, twin-tub
The switching of four kinds of operational modes of increasing enthalpy, this method are suitable for the air-conditioning system of field of employment complexity, can meet air-conditioning system simultaneously
More energy efficient operation is realized while meeting user demand in place in room temperature, high temperature, low temperature, small space, extra space.
Transfiguration increasing enthalpy control method as described above, wherein in step S2, the operating parameter includes that the twin-tub becomes
The running frequency of positive displacement compressor 1, outdoor environment temperature, condenser temperature, delivery temperature, pressure at expulsion, indoor environment temperature, steaming
Send out at least one of device temperature, suction temperature, pressure of inspiration(Pi).
In this way, the present embodiment can obtain the current workload demand of air-conditioning, detection mode multiplicity by different operating parameters
Change.
It should be noted that running frequency, outdoor environment temperature, condenser temperature, delivery temperature, pressure at expulsion, interior
The parameters such as environment temperature, evaporator temperature, suction temperature, pressure of inspiration(Pi) can be divided into:
First group: running frequency；
Second group: outdoor environment temperature, condenser temperature, delivery temperature, pressure at expulsion；
Third group: indoor environment temperature, evaporator temperature, suction temperature, pressure of inspiration(Pi).
Wherein, four parameters in second group are positively correlated each other, and four in third group parameter is positively correlated each other, and first
Group, second group, any parameter in third group can be optionally combined, parameter is more, and detection is more accurate, but the group between being positively correlated
It closes nonsensical.
Further, the operating parameter includes the first operating parameter and the second operating parameter, and the first operating parameter is double
Running frequency, outdoor environment temperature, condenser temperature, delivery temperature, pressure at expulsion, the indoor environment temperature of cylinder positive displacement compressor 1
One of degree, evaporator temperature, suction temperature, pressure of inspiration(Pi).Second operating parameter includes the running frequency, the outdoor
Environment temperature, the condenser temperature, the delivery temperature, the pressure at expulsion, the indoor environment temperature, the evaporator
One of temperature, the suction temperature, described pressure of inspiration(Pi) are a variety of, and second operating parameter and first operation
Parameter is different.
In this way, the present embodiment, which can obtain the current load of air-conditioning by the first operating parameter and the cooperation of the second operating parameter, to be needed
It asks, it is more accurate to the judgement of air-conditioning current loads demand, convenient for accurately controlling the operational mode of double-cylinder variable-capacity compressor 1,
Advantageously reduce the energy consumption of air-conditioning.
Further, first operating parameter further includes set temperature.The set temperature is temperature set by user,
In this way can real-time judge user demand, it is more humanized, detection air-conditioning current loads demand it is more accurate.Set temperature can with it is upper
State first group, second group, at least one parameter in third group be combined, form combination parameter, and then detection institute can be passed through
Combination parameter is stated to detect air-conditioning current loads demand.Do not have separately through detection set temperature to detect air-conditioning current loads demand
It is significant.
Further, the preferably described operating parameter is running frequency, in delivery temperature, outdoor environment temperature, set temperature
At least one.
Due in existing air-conditioning system, having been provided with detection running frequency, delivery temperature, outdoor environment temperature, setting temperature
The equipment and sensor of degree, when passing through detection running frequency, delivery temperature, outdoor environment temperature, at least one in set temperature
It plants above-mentioned parameter can be detected by the existing built-in device of air-conditioning and sensor when detecting air-conditioning current loads demand,
Without making change, the equipment or sensor of additional increase checking above-mentioned parameter to air-conditioning system, and then increase air-conditioning cost,
Cost to realize the transfiguration increasing enthalpy control method in the present embodiment is low.
Further, the preferably described operating parameter is running frequency, in delivery temperature, outdoor environment temperature, set temperature
Combination.Air-conditioning current loads demand can be detected simultaneously by many aspects such as four parameters in this way, air-conditioning current loads are needed
The judgement asked is more accurate；And more accurate detection is realized under the premise of guaranteeing low cost.
Embodiment 4
Transfiguration increasing enthalpy control method as described above, wherein the preferred operating parameter is double-cylinder variable-capacity compressor 1
Running frequency, preferably the first preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 be not more than first frequency threshold value, second
Preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is greater than first frequency threshold value and is less than second frequency threshold value.Then have:
Air-conditioning is under refrigeration or heating mode, if the running frequency of double-cylinder variable-capacity compressor 1 is not more than first frequency threshold value,
It then controls triple valve 2 and enters the first on state；
If the running frequency of double-cylinder variable-capacity compressor 1 is greater than first frequency threshold value and is less than second frequency threshold value, be connected
Two-port valve 9.
Further, preferred third preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is not less than second frequency threshold
Value, then have:
Air-conditioning is under refrigeration or heating mode, if the running frequency of double-cylinder variable-capacity compressor 1 is not less than second frequency threshold value,
It then controls triple valve 2 and enters the second on state.
Further, preferably the 4th preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is not less than third frequency threshold
It is worth and third frequency threshold is greater than second frequency threshold value, then has:
If the running frequency of double-cylinder variable-capacity compressor 1 is not less than third frequency threshold, two-port valve 9 is connected.
Further, preferably the 5th preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is less than the 4th frequency threshold
And the 4th frequency threshold be slightly less than second frequency threshold value, then have:
If the running frequency of double-cylinder variable-capacity compressor 1 controls triple valve 2 and enters the first conducting less than the 4th frequency threshold
State；
Wherein, the 4th frequency threshold is slightly less than second frequency threshold value, has between second frequency threshold value and the 4th frequency threshold
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the running frequency in double-cylinder variable-capacity compressor 1 just small
Single cylinder operational mode is entered by twin-tub operational mode in the critical point control double-cylinder variable-capacity compressor 1 of second frequency threshold value, is avoided
It is decreased to judge the current workload demand of air-conditioning by accident in the running frequency normal fluctuation of double-cylinder variable-capacity compressor 1, and then avoids
The energy consumption of air-conditioning is reduced under the premise of not meeting user demand, control method is more reasonable.
Further, preferably the 6th preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is less than the 5th frequency threshold
And the 5th frequency threshold be slightly less than first frequency threshold value, then have:
If the running frequency of double-cylinder variable-capacity compressor 1 disconnects two-port valve 9 less than the 5th frequency threshold；
Wherein, the 5th frequency threshold is slightly less than first frequency threshold value, has between first frequency threshold value and the 5th frequency threshold
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the running frequency in double-cylinder variable-capacity compressor 1 just small
Single cylinder operational mode is entered by single cylinder increasing enthalpy operational mode in the critical point control double-cylinder variable-capacity compressor 1 of first frequency threshold value,
Avoid the workload demand that erroneous judgement air-conditioning is current in the running frequency normal fluctuation of double-cylinder variable-capacity compressor 1 decreased, in turn
The energy consumption that air-conditioning is reduced under the premise of not meeting user demand is avoided, control method is more reasonable.
Further, preferably the 7th preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is less than the 6th frequency threshold
And it is greater than second frequency threshold value, and the 6th frequency threshold is slightly less than third frequency threshold, then has:
If the running frequency of double-cylinder variable-capacity compressor 1 is less than the 6th frequency threshold and is greater than second frequency threshold value, disconnect
Two-port valve 9；
Wherein, the 6th frequency threshold is slightly less than third frequency threshold, has between third frequency threshold and the 6th frequency threshold
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the running frequency in double-cylinder variable-capacity compressor 1 just small
Twin-tub operational mode is entered by twin-tub increasing enthalpy operational mode in the critical point control double-cylinder variable-capacity compressor 1 of third frequency threshold,
Avoid the workload demand that erroneous judgement air-conditioning is current in the running frequency normal fluctuation of double-cylinder variable-capacity compressor 1 decreased, in turn
The energy consumption that air-conditioning is reduced under the premise of not meeting user demand is avoided, control method is more reasonable.
Embodiment 5
Transfiguration increasing enthalpy control method as described above, wherein the preferred operating parameter includes double-cylinder variable-capacity compressor 1
Delivery temperature and running frequency, preferably the first preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 no more than first temperature
It spends threshold value or running frequency is not more than first frequency threshold value, the second preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 is big
In the first temperature threshold and it is less than second temperature threshold value.Then have:
Air-conditioning is under refrigeration or heating mode, if the delivery temperature of double-cylinder variable-capacity compressor 1 is not more than the first temperature threshold
Or running frequency is not more than first frequency threshold value, then controls triple valve 2 and enter the first on state；
If the delivery temperature of double-cylinder variable-capacity compressor 1 is greater than the first temperature threshold and is less than second temperature threshold value, be connected
Two-port valve 9.
Further, preferred third preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 is not less than second temperature threshold
It is worth and running frequency is greater than first frequency threshold value, then has:
Air-conditioning is under refrigeration or heating mode, if the delivery temperature of double-cylinder variable-capacity compressor 1 is not less than second temperature threshold value
And running frequency is greater than first frequency threshold value, then controls triple valve 2 and enter the second on state.
Further, preferably the 4th preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 is not less than third temperature threshold
It is worth and third temperature threshold is greater than second temperature threshold value, then has:
If the delivery temperature of double-cylinder variable-capacity compressor 1 is not less than third temperature threshold, two-port valve 9 is connected.
Further, preferably the 5th preset range are as follows: the running frequency of double-cylinder variable-capacity compressor 1 is less than second frequency threshold value
And second frequency threshold value is slightly less than first frequency threshold value, then has:
If the running frequency of double-cylinder variable-capacity compressor 1 is less than second frequency threshold value, controls triple valve 2 and enter the first conducting
State；
Wherein, second frequency threshold value is slightly less than first frequency threshold value, has between second frequency threshold value and first frequency threshold value
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the running frequency in double-cylinder variable-capacity compressor 1 just small
Single cylinder operational mode is entered by twin-tub operational mode in the critical point control double-cylinder variable-capacity compressor 1 of first frequency threshold value, is avoided
It is decreased to judge the current workload demand of air-conditioning by accident in the running frequency normal fluctuation of double-cylinder variable-capacity compressor 1, and then avoids
The energy consumption of air-conditioning is reduced under the premise of not meeting user demand, control method is more reasonable.
Further, preferably the 6th preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 is less than the 4th temperature threshold
And the 4th temperature threshold be slightly less than the first temperature threshold, then have:
If the delivery temperature of double-cylinder variable-capacity compressor 1 disconnects two-port valve 9 less than the 4th temperature threshold；
Wherein, the 4th temperature threshold is slightly less than the first temperature threshold, has between the first temperature threshold and the 4th temperature threshold
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the delivery temperature in double-cylinder variable-capacity compressor 1 just small
Single cylinder operational mode is entered by single cylinder increasing enthalpy operational mode in the critical point control double-cylinder variable-capacity compressor 1 of the first temperature threshold,
Avoid the workload demand that erroneous judgement air-conditioning is current in the delivery temperature normal fluctuation of double-cylinder variable-capacity compressor 1 decreased, in turn
The energy consumption that air-conditioning is reduced under the premise of not meeting user demand is avoided, control method is more reasonable.
Further, preferably the 7th preset range are as follows: the delivery temperature of double-cylinder variable-capacity compressor 1 is less than the 5th temperature threshold
And it is greater than second temperature threshold value, and the 5th temperature threshold is slightly less than third temperature threshold, then has:
If the delivery temperature of double-cylinder variable-capacity compressor 1 is less than the 5th temperature threshold and is greater than second temperature threshold value, disconnect
Two-port valve 9；
Wherein, the 5th temperature threshold is slightly less than third temperature threshold, has between third temperature threshold and the 5th temperature threshold
There is return difference value, it can be ensured that the current workload demand of air-conditioning is decreased, avoids the delivery temperature in double-cylinder variable-capacity compressor 1 just small
Twin-tub operational mode is entered by twin-tub increasing enthalpy operational mode in the critical point control double-cylinder variable-capacity compressor 1 of third temperature threshold,
Avoid the workload demand that erroneous judgement air-conditioning is current in the delivery temperature normal fluctuation of double-cylinder variable-capacity compressor 1 decreased, in turn
The energy consumption that air-conditioning is reduced under the premise of not meeting user demand is avoided, control method is more reasonable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of double-cylinder variable-capacity compressor system characterized by comprising
Double-cylinder variable-capacity compressor (1), which is provided with exhaust outlet (h), air entry (m) and transfiguration mouth (k)；
First control valve group (2) is connected to the exhaust outlet (h), the air entry (m) and the transfiguration mouth (k) respectively；
For controlling the connection of the transfiguration mouth (k) Yu the exhaust outlet (h), list is carried out to control the double-cylinder variable-capacity compressor (1)
Cylinder operation；Or the connection of control the transfiguration mouth (k) and the air entry (m), with control the double-cylinder variable-capacity compressor (1) into
The operation of row twin-tub.
2. double-cylinder variable-capacity compressor system according to claim 1, which is characterized in that first control valve group (2)
Including a triple valve (21), the first interface (a) of the triple valve (21), second interface (b), third interface (c) respectively with
The transfiguration mouth (k), the air entry (m), the exhaust outlet (h) connection.
3. double-cylinder variable-capacity compressor system according to claim 1, which is characterized in that first control valve group (2)
Including two two-port valves, one of them described two-port valve is set between the transfiguration mouth (k) and the exhaust outlet (h), another
The two-port valve is set between the transfiguration mouth (k) and the air entry (m).
4. double-cylinder variable-capacity compressor system according to claim 2, which is characterized in that the double-cylinder variable-capacity compressor (1)
Including a transfiguration tank (13), one end of the transfiguration tank (13) is connected to the first interface (a) of the triple valve (21), separately
One end is connected to the transfiguration mouth (k) of the double-cylinder variable-capacity compressor (1), and the transfiguration tank (13) is suitable for from the transfiguration
The refrigerant that mouth (k) enters the double-cylinder variable-capacity compressor (1) carries out gas-liquid separation.
5. a kind of transfiguration increasing enthalpy system, including indoor heat exchanger (6), orifice union, outdoor heat exchanger (4) and four-way valve (3), institute
State the 4th valve port (g), the outdoor heat exchanger (4), the orifice union, the indoor heat exchanger (6), institute of four-way valve (3)
The third valve port (f) for stating four-way valve (3) is sequentially connected；It is characterized in that, the transfiguration increasing enthalpy system further includes claim 1-4
In any double-cylinder variable-capacity compressor system, the exhaust outlet (h) of the double-cylinder variable-capacity compressor (1), the air-breathing
Mouth (m) is connected to the first valve port (d) of the four-way valve (3), the second valve port (e) respectively；The four-way valve (3) controls the row
Port (h) is connected to the outdoor heat exchanger (4), the air entry (m) is connected to the indoor heat exchanger (6), or control institute
State that exhaust outlet (h) is connected to the indoor heat exchanger (6), the air entry (m) is connected to the outdoor heat exchanger (4), with control
The change for matchmaker's flow direction of freezing.
6. transfiguration increasing enthalpy system according to claim 5, which is characterized in that the tonifying Qi of the double-cylinder variable-capacity compressor (1)
Mouth (j) is connected to the pipe of the outdoor heat exchanger (4) and the indoor heat exchanger (6) connection by the second control valve group (9)
Between road；Refrigerant in the pipeline of the outdoor heat exchanger (4) and the indoor heat exchanger (6) connection is in second control valve
Under component (9) on state, the gas supplementing opening (j) of the double-cylinder variable-capacity compressor (1) is flowed to.
7. transfiguration increasing enthalpy system according to claim 5 or 6, which is characterized in that the double-cylinder variable-capacity compressor (1) is also wrapped
It includes increasing enthalpy tank (14), the increasing enthalpy tank (14) is arranged at the gas supplementing opening (j) of the double-cylinder variable-capacity compressor (1), and fits
In the refrigerant progress gas-liquid separation to the double-cylinder variable-capacity compressor (1) is entered from the gas supplementing opening (j).
8. a kind of transfiguration increasing enthalpy control method corresponding with any transfiguration increasing enthalpy system of claim 5-7, feature exist
In, comprising:
S1 detects the operational mode of air-conditioning；
S2, if air-conditioning work obtains the operating parameter of air-conditioning in refrigeration or heating mode；
S3, if the operating parameter falls into the first preset range, the first control valve group controls double-cylinder variable-capacity compressor (1)
Transfiguration mouth (k) is connected to exhaust outlet (h), while judging whether the operating parameter falls into the second preset range；
S4, if the second control valve group is then connected.
9. transfiguration increasing enthalpy control method according to claim 8, which is characterized in that after the step S2, the transfiguration
Increasing enthalpy control method further include:
S5, if the operating parameter falls into third preset range, first control valve group controls the twin-tub transfiguration pressure
The transfiguration mouth (k) of contracting machine (1) is connected to air entry (m).
10. transfiguration increasing enthalpy control method according to claim 9, which is characterized in that after the step S5, the transfiguration
Increasing enthalpy control method further include:
Second control valve group is connected if the operating parameter falls into the 4th preset range in S6；
Wherein, the third preset range includes the 4th preset range.
11. transfiguration increasing enthalpy control method according to claim 9, which is characterized in that after the step S5, the transfiguration
Increasing enthalpy control method further include:
S7, if the operating parameter falls into the 5th preset range, first control valve group control the transfiguration mouth (k) with
Exhaust outlet (h) connection.
12. according to any transfiguration increasing enthalpy control method of claim 8-11, which is characterized in that the operating parameter includes
Running frequency, outdoor environment temperature, condenser temperature, delivery temperature, the pressure at expulsion, room of the double-cylinder variable-capacity compressor (1)
At least one of interior environment temperature, evaporator temperature, suction temperature, pressure at expulsion.
13. transfiguration increasing enthalpy control method according to claim 12, which is characterized in that the operating parameter further includes setting
Temperature.
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