CN110274400A - Vapor-supplementing and enthalpy-increasing system and control method thereof - Google Patents
Vapor-supplementing and enthalpy-increasing system and control method thereof Download PDFInfo
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- CN110274400A CN110274400A CN201910521217.XA CN201910521217A CN110274400A CN 110274400 A CN110274400 A CN 110274400A CN 201910521217 A CN201910521217 A CN 201910521217A CN 110274400 A CN110274400 A CN 110274400A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001502 supplementing effect Effects 0.000 claims abstract description 44
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000003507 refrigerant Substances 0.000 description 33
- 239000007788 liquid Substances 0.000 description 21
- 239000002826 coolant Substances 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The application provides a gas-supplementing enthalpy-increasing system and a control method thereof. The air-supplementing enthalpy-increasing system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a first air supplementing device and a second air supplementing device, a first interface of the first air supplementing device is connected to the indoor heat exchanger, an air supplementing outlet is connected to a first air supplementing port, a second interface is connected to a first interface of the second air supplementing device, an air supplementing outlet of the second air supplementing device is connected to a second air supplementing port, a second interface is connected to the outdoor heat exchanger, a first throttling device is arranged between the first air supplementing device and the indoor heat exchanger, a second throttling device is arranged between the second air supplementing device and the first air supplementing device, a first bypass pipeline is connected between the first throttling device and the indoor heat exchanger, the first bypass pipeline is connected to the outdoor heat exchanger, and a first control valve is arranged on the first bypass pipeline. According to the air-supplying and enthalpy-increasing system, the pipeline loss and the throttling loss of the system can be reduced, and the heating capacity and the energy efficiency level of the system are greatly improved.
Description
Technical field
This application involves air-conditioning technique fields, and in particular to a kind of Gas-supplying enthalpy-increasing system and its control method.
Background technique
Air source heat pump heating capacity declines decaying rapidly with outdoor environment temperature and is unable to satisfy user demand.It is existing to adopt
It is intermediate not with not exclusively cooling and level-one throttling among twin-stage or quasi- two-stage compression second vapor injection increasing enthalpy technology, including two-stage throttling
Complete cooling cycle can be improved low-temperature heating capacity and COP, while have certain help to compressor exhaust temperature is reduced.But it is existing
There is technology to the promotion of ability or the promotion limited extent of efficiency, it is also limited to the reduction amplitude of hiigh pressure stage delivery temperature.
For this purpose, proposing a kind of refrigerating plant in the prior art, which includes being sequentially connected logical outdoor heat exchange
Device, compressor unit, indoor heat exchanger and making-up air device, making-up air device include the first making-up air device and the second making-up air device,
On pipeline between indoor heat exchanger and outdoor heat exchanger, filled equipped with the first making-up air device and the second tonifying Qi for being sequentially connected logical
It sets；Wherein, first throttling device, the first making-up air device and the second tonifying Qi are equipped between indoor heat exchanger and the first making-up air device
Second throttling device is equipped between device.
However the refrigerating plant realize single stage compress system, Two-stage Compression system, three stage compression system operation when, system
Line loss and restriction loss it is big, cause system heating capacity and efficiency level to substantially reduce.
Summary of the invention
Therefore, the application technical problems to be solved are to provide a kind of Gas-supplying enthalpy-increasing system and its control method, can
The line loss of reduction system and restriction loss, greatly improve system heating capacity and efficiency is horizontal.
To solve the above-mentioned problems, the application provides a kind of Gas-supplying enthalpy-increasing system, including compressor, outdoor heat exchanger, room
Interior heat exchanger, the first making-up air device and the second making-up air device, the first interface of the first making-up air device are connected to indoor heat exchanger, the
The tonifying Qi outlet of one making-up air device is connected to the first gas supplementing opening of compressor, and the second interface of the first making-up air device is connected to second
The first interface of making-up air device, the tonifying Qi outlet of the second making-up air device are connected to the second gas supplementing opening of compressor, the second tonifying Qi dress
The second interface set is connected to outdoor heat exchanger, is provided with first segment on the pipeline between the first making-up air device and indoor heat exchanger
Device is flowed, is provided with second throttling device, first throttling device on the pipeline between the second making-up air device and the first making-up air device
The first bypass line is connected on pipeline between indoor heat exchanger, the other end of the first bypass line is connected to outdoor heat exchange
Device is provided with the first control valve on the first bypass line.
Preferably, Gas-supplying enthalpy-increasing system further includes third making-up air device, and third making-up air device is arranged in the first making-up air device
And second between making-up air device, the first interface of third making-up air device is connected to the second interface of the first making-up air device, and third is mended
The tonifying Qi outlet of device of air is connected to the third gas supplementing opening of compressor, and the second interface of third making-up air device is connected to the second tonifying Qi
The first interface of device is arranged on the pipeline between the first interface of third making-up air device and the second interface of the first making-up air device
There is third throttling set, second throttling device is on the pipeline between third making-up air device and the second making-up air device.
Preferably, it is provided with the second bypass line on the pipeline between second throttling device and third making-up air device, second
The other end of bypass line is connected to outdoor heat exchanger, and the second control valve is provided on the second bypass line.
Preferably, third bypass line, third are provided on the pipeline between third throttling set and the first making-up air device
The other end of bypass line is connected to outdoor heat exchanger, is provided with third control valve on third bypass line.
Preferably, the tonifying Qi outlet of the first making-up air device is connected to the first gas supplementing opening by the first tonifying Qi pipeline, and first mends
The 4th control valve is provided on air pipe；And/or second the tonifying Qi outlet of making-up air device be connected to the by the second tonifying Qi pipeline
Two gas supplementing openings, the second blowdown pipe road are provided with the 5th control valve.
Preferably, the tonifying Qi outlet of third making-up air device is connected to third gas supplementing opening by third tonifying Qi pipeline, and third is mended
The 6th control valve is provided on air pipe.
Preferably, outdoor heat exchanger is provided with the 4th throttling set close to one end of indoor heat exchanger, the first making-up air device,
Second making-up air device and third making-up air device pass through the 4th throttling set and are connected to outdoor heat exchanger.
According to the application's in another aspect, providing a kind of control method of above-mentioned Gas-supplying enthalpy-increasing system, comprising:
Obtain outdoor environment temperature；
Compressibility series is determined according to outdoor environment temperature；
The aperture of each throttling set and control valve is adjusted according to determining compressibility series.
Preferably, the step of determining compressibility series according to outdoor environment temperature include:
When outdoor environment temperature TS meets TS >=a, determine that Gas-supplying enthalpy-increasing system is single stage compress system；
When outdoor environment temperature TS meets a > TS >=b, determine that Gas-supplying enthalpy-increasing system is Two-stage Compression system；
When outdoor environment temperature TS meets b > TS >=c, determine that Gas-supplying enthalpy-increasing system is three stage compression system；
When outdoor environment temperature TS meets TS < c, determine that Gas-supplying enthalpy-increasing system is level Four compressibility, wherein a > b >
c。
Preferably, the step of aperture of each throttling set and control valve is adjusted according to determining compressibility series include:
When determining compressibility is single stage compress system, the aperture of the 4th throttling set of control is greater than 0, control first
The aperture of throttling set, second throttling device and third throttling set is equal to 0, and the first control valve of control is opened, the second control of control
Valve processed to the 6th control valve is closed, and Gas-supplying enthalpy-increasing system is switched to single stage compress system.
Preferably, the step of aperture of each throttling set and control valve is adjusted according to determining compressibility series include:
When determining compressibility is Two-stage Compression system, first throttling device, the aperture of the 4th throttling set are controlled
Greater than 0, the aperture for controlling second throttling device and third throttling set is equal to 0, controls third control valve and the 4th control valve is beaten
It opens, the first control valve of control, the second control valve, third control valve and the 5th control valve are closed, and Gas-supplying enthalpy-increasing system is switched to
Two-stage Compression system.
Preferably, the step of aperture of each throttling set and control valve is adjusted according to determining compressibility series include:
When determining compressibility is three stage compression system, first throttling device, third throttling set, Section four are controlled
The aperture for flowing device is greater than 0, and the aperture for controlling second throttling device is equal to 0, controls the second control valve, the 4th control valve and the 6th
Control valve is opened, and the first control valve of control, third control valve and the 5th control valve are closed, and Gas-supplying enthalpy-increasing system is switched to three-level
Compressibility.
Preferably, the step of aperture of each throttling set and control valve is adjusted according to determining compressibility series include:
When determining compressibility is level Four compressibility, first throttling device, second throttling device, third section are controlled
The aperture of device, the 4th throttling set is flowed greater than 0, and the 4th control valve of control, the 5th control valve and the 6th control valve are opened, control
First control valve, the second control valve and third control valve are closed, and Gas-supplying enthalpy-increasing system is switched to level Four compressibility.
Gas-supplying enthalpy-increasing system provided by the present application, including compressor, outdoor heat exchanger, indoor heat exchanger, the first tonifying Qi dress
It sets and is connected to indoor heat exchanger with the second making-up air device, the first interface of the first making-up air device, the tonifying Qi of the first making-up air device goes out
Mouth is connected to the first gas supplementing opening of compressor, and what the second interface of the first making-up air device was connected to the second making-up air device first connects
Mouthful, the tonifying Qi outlet of the second making-up air device is connected to the second gas supplementing opening of compressor, the second interface connection of the second making-up air device
To outdoor heat exchanger, first throttling device, the second tonifying Qi are provided on the pipeline between the first making-up air device and indoor heat exchanger
Second throttling device is provided on pipeline between device and the first making-up air device, between first throttling device and indoor heat exchanger
Pipeline on be connected with the first bypass line, the other end of the first bypass line is connected to outdoor heat exchanger, the first bypass line
On be provided with the first control valve.The Gas-supplying enthalpy-increasing system on the pipeline between first throttling device and indoor heat exchanger by connecting
The first bypass line is connect, and the first control valve is set on the first bypass line, first can be controlled by the first control valve
The on-off of bypass line, and then realize and the state in Gas-supplying enthalpy-increasing system operation is switched, since refrigerant flows through by the of first
Without throttling when siphunculus road, therefore line loss and the restriction loss of system can be reduced in carrying out net system switching process,
It greatly improves system heating capacity and efficiency is horizontal.
Detailed description of the invention
Fig. 1 is the structure principle chart of the Gas-supplying enthalpy-increasing system of the embodiment of the present application；
Fig. 2 is the control flow chart of the Gas-supplying enthalpy-increasing system of the embodiment of the present application.
Appended drawing reference indicates are as follows:
1, compressor；2, outdoor heat exchanger；3, indoor heat exchanger；4, the first making-up air device；5, the second making-up air device；6,
Three making-up air devices；7, first throttling device；8, second throttling device；9, third throttling set；10, the 4th throttling set；11,
One control valve；12, the second control valve；13, third control valve；14, the 4th control valve；15, the 5th control valve；16, the 6th control
Valve；17, the first bypass line；18, the second bypass line；19, third bypass line；20, the first tonifying Qi pipeline；21, it second mends
Air pipe；22, third tonifying Qi pipeline；23, controller；24, gas-liquid separator.
Specific embodiment
In conjunction with shown in Figure 1, according to an embodiment of the present application, Gas-supplying enthalpy-increasing system includes compressor 1, outdoor heat exchanger
2, indoor heat exchanger 3, the first making-up air device 4 and the second making-up air device 5, the first interface of the first making-up air device 4 are connected to interior
Heat exchanger 3, the tonifying Qi outlet of the first making-up air device 4 are connected to the first gas supplementing opening of compressor 1, and the second of the first making-up air device 4
Interface is connected to the first interface of the second making-up air device 5, and the tonifying Qi outlet of the second making-up air device 5 is connected to the second of compressor 1
Gas supplementing opening, the second interface of the second making-up air device 5 are connected to outdoor heat exchanger 2, the first making-up air device 4 and indoor heat exchanger 3 it
Between pipeline on be provided with first throttling device 7, be provided on the pipeline between the second making-up air device 5 and the first making-up air device 4
Second throttling device 8, is connected with the first bypass line 17 on the pipeline between first throttling device 7 and indoor heat exchanger 3, and first
The other end of bypass line 17 is connected to outdoor heat exchanger 2, and the first control valve 11 is provided on the first bypass line 17.
The Gas-supplying enthalpy-increasing system on the pipeline between first throttling device 7 and indoor heat exchanger 3 by connecting by the of first
Siphunculus road 17, and the first control valve 11 is set on the first bypass line 17, first can be controlled by the first control valve 11
The on-off of bypass line 17, and then realize and the state in Gas-supplying enthalpy-increasing system operation is switched, since refrigerant flows through first
Without throttling when bypass line 17, therefore can be in carrying out net system switching process, so that refrigerant will not be caused due to throttling
Line loss and the restriction loss of system is effectively reduced in the pressure loss, greatly improves system heating capacity and efficiency is horizontal.
Above-mentioned Gas-supplying enthalpy-increasing system is mended when only including the first making-up air device and the second making-up air device by control first
The on-off of the tonifying Qi outlet of device of air 4, the on-off of the first bypass line 17, the second making-up air device 5 tonifying Qi outlet on-off, the
The aperture of one throttling set 7 and the aperture of second throttling device 8 can be realized single stage compress system, Two-stage Compression system is cut
It changes, when being heated under single stage compress system, is changed since refrigerant directly flows into outdoor through the first bypass line 17 from indoor heat exchanger 3
In hot device 2, therefore the entire flow process of refrigerant has preferable pressure refrigerant flow, can effectively improve without throttling
System heating capacity and efficiency are horizontal.
Preferably, Gas-supplying enthalpy-increasing system further includes third making-up air device 6, and the setting of third making-up air device 6 is filled in the first tonifying Qi
4 and second are set between making-up air device 5, the first interface of third making-up air device 6 is connected to the second interface of the first making-up air device 4,
The tonifying Qi outlet of third making-up air device 6 is connected to the third gas supplementing opening of compressor 1, the second interface connection of third making-up air device 6
To the first interface of the second making-up air device 5, the second interface of the first interface of third making-up air device 6 and the first making-up air device 4 it
Between pipeline on be provided with third throttling set 9, second throttling device 8 be located at third making-up air device 6 and the second making-up air device 5 it
Between pipeline on.
By increasing third making-up air device 6, the tonifying Qi series of Gas-supplying enthalpy-increasing system can be further increased, so as to reality
The switching of existing single stage compress system, Two-stage Compression system, three stage compression system and level Four compressibility further increases tonifying Qi increasing
The diversity of the multi-stage compression system of enthalpy system improves the work efficiency and operational efficiency of Gas-supplying enthalpy-increasing system, can be preferably
Meet the heating needs under lower operating condition, improves the heating capacity of Gas-supplying enthalpy-increasing system.
The application can also realize the series connection of multiple making-up air devices by increasing more making-up air devices, and then realize and mend
The switching of the more stages compressibility of gas increasing enthalpy system.
In the present embodiment, the second bypass pipe is provided on the pipeline between second throttling device 8 and third making-up air device 6
Road 18, the other end of the second bypass line 18 are connected to outdoor heat exchanger 2, are provided with the second control valve on the second bypass line 18
12.It, can be in reality by the way that the second bypass line 18 is arranged on the pipeline between second throttling device 8 and third making-up air device 6
When the multi-stage compression system operation of existing compressor, so that refrigerant is when without carrying out tonifying Qi through the second making-up air device 5, directly through
Second bypass line 18 reaches outdoor heat exchanger 2, without flowing through second throttling device 8, so that refrigerant, which is effectively reduced, flows through the
Restriction loss caused by when two throttling sets 8 guarantees the operational efficiency of system.
Third bypass line 19, third bypass are provided on pipeline between third throttling set 9 and the first making-up air device 4
The other end of pipeline 19 is connected to outdoor heat exchanger 2, and third control valve 13 is provided on third bypass line 19.Third herein
The effect of bypass line 19 and the course of work are similar with the second bypass line 18.
The tonifying Qi outlet of first making-up air device 4 is connected to the first gas supplementing opening, the first blowdown pipe by the first tonifying Qi pipeline 20
The 4th control valve 14 is provided on road 20.
The tonifying Qi outlet of second making-up air device 5 is connected to the second gas supplementing opening, the second blowdown pipe by the second tonifying Qi pipeline 21
The 5th control valve 15 is provided on road 21.
The tonifying Qi outlet of third making-up air device 6 is connected to third gas supplementing opening, third blowdown pipe by third tonifying Qi pipeline 22
The 6th control valve 16 is provided on road 22.
Outdoor heat exchanger 2 is provided with the 4th throttling set 10, the first making-up air device 4, close to one end of indoor heat exchanger 3
Two making-up air devices 5 and third making-up air device 6 are connected to outdoor heat exchanger 2 by the 4th throttling set 10.
Above-mentioned throttling set is, for example, electric expansion valve, and above-mentioned control valve is, for example, solenoid valve, above-mentioned tonifying Qi dress
Set for example, flash evaporation.
Gas-supplying enthalpy-increasing system can also include gas-liquid separator 24 and controller 23, and the wherein setting of gas-liquid separator 24 is being pressed
The air entry of contracting machine 1, controller 23 are electrically connected with each throttling set and control valve simultaneously, and control each throttling set and
The aperture of control valve, to facilitate the switching for realizing the different number of compression stages of Gas-supplying enthalpy-increasing system.
The first above-mentioned gas supplementing opening is, for example, compressor high pressure cylinder gas supplementing opening, and the second above-mentioned gas supplementing opening is, for example, compressor
Low pressure (LP) cylinder gas supplementing opening, above-mentioned third gas supplementing opening are, for example, compressor intermediate cavity gas supplementing opening.
In the exhaust outlet of compressor, oil eliminator can also be set.
In conjunction with shown in Figure 2, according to an embodiment of the present application, a kind of control method packet of above-mentioned Gas-supplying enthalpy-increasing system
It includes: obtaining outdoor environment temperature；Compressibility series is determined according to outdoor environment temperature；According to determining compressibility series tune
The aperture of whole each throttling set and control valve.
The above-mentioned control method of the application, compressibility series is determined according to outdoor environment temperature, so that compressibility
Series is matched with outdoor environment temperature, so as to select suitable compressibility series according to outdoor environment temperature, guarantees pressure
Compression system series can be adjusted according to the difference of outdoor environment temperature, can effectively meet the heating needs under lower operating condition,
It improves unit heating capacity and efficiency is horizontal, can also be improved the flexibility of system control, further increase running efficiency of system.
The step of determining compressibility series according to outdoor environment temperature includes: when outdoor environment temperature TS meets TS >=a
When, determine that Gas-supplying enthalpy-increasing system is single stage compress system；When outdoor environment temperature TS meets a > TS >=b, Gas-supplying enthalpy-increasing is determined
System is Two-stage Compression system；When outdoor environment temperature TS meets b > TS >=c, determine that Gas-supplying enthalpy-increasing system is three stage compression
System；When outdoor environment temperature TS meets TS < c, determine that Gas-supplying enthalpy-increasing system is level Four compressibility, wherein a > b > c.
By delimiting temperature range range, the compressibility of different series is enabled to respectively correspond different temperature ranges
Range can make the work of Gas-supplying enthalpy-increasing system within the scope of preferable efficiency, so that outdoor environment temperature and compressibility series are more
Add matching, further increase unit operation efficiency, improves unit heating capacity and efficiency is horizontal.
In the present embodiment, a is, for example, 20 DEG C, and b is, for example, 0 DEG C, and c is, for example, -30 DEG C.
The value of above-mentioned a, b, c can carry out adaptability tune according to the work region of Gas-supplying enthalpy-increasing system and the different of environment
It is whole, it can specifically be set according to the actual situation by staff, it is not limited to above-mentioned numberical range.
The step of aperture of each throttling set and control valve is adjusted according to determining compressibility series includes: when determining
When compressibility is single stage compress system, the aperture of the 4th throttling set 10 of control is greater than 0, controls first throttling device 7, second
The aperture of throttling set 8 and third throttling set 9 is equal to 0, and the first control valve 11 of control is opened, the second control valve 12 of control to the
Six control valves 16 are closed, and Gas-supplying enthalpy-increasing system is switched to single stage compress system.
When Gas-supplying enthalpy-increasing system is single stage compress system, the low-pressure gas refrigerant come out from gas-liquid separator 24 passes through pressure
Contracting machine compression after become pressurized gas refrigerant, after enter the room heat exchanger 3 condense heat release be high-pressure liquid refrigerant, due to first segment
The aperture for flowing device 7, second throttling device 8 and third throttling set 9 is equal to 0, and 12 to the 6th control valve 16 of the second control valve closes
It closes, therefore refrigerant passes through the first bypass line 17, steams after 10 reducing pressure by regulating flow of the 4th throttling set through outdoor heat exchanger 2 later
Hair heat absorption is low pressure refrigerant, enters back into gas-liquid separator 24 and is recycled, the entire flow process of refrigerant is merely through Section four
It flows device 10 once to throttle, therefore reduces the throttling number of refrigerant, line loss and the restriction loss of system is effectively reduced,
It greatly improves system heating capacity and efficiency is horizontal.
The step of aperture of each throttling set and control valve is adjusted according to determining compressibility series includes: when determining
When compressibility is Two-stage Compression system, control first throttling device 7, the aperture of the 4th throttling set 10 are greater than 0, control second
The aperture of throttling set 8 and third throttling set 9 is equal to 0, controls third control valve 13 and the 4th control valve 14 and opens, control the
One control valve 11, the second control valve 12, third control valve 13 and the 5th control valve 15 are closed, and Gas-supplying enthalpy-increasing system are switched to double
Grade compressibility.
When Gas-supplying enthalpy-increasing system is Two-stage Compression system, the low-pressure gas refrigerant come out from gas-liquid separator 24 passes through pressure
Contracting machine 1 compress after become pressurized gas refrigerant, after enter the room heat exchanger 3 condense heat release be high-pressure liquid refrigerant, due to first
Control valve 11 is closed, therefore refrigerant is after 7 reducing pressure by regulating flow of first throttling device, the gas into the first making-up air device 4, after shwoot
Refrigerant enters compressor high pressure cylinder gas supplementing opening by first tonifying Qi pipeline 20 this branch and is compressed, the liquid coolant after shwoot
By this branch of third bypass line 19, through 2 evaporation endothermic of outdoor heat exchanger after 10 reducing pressure by regulating flow of the 4th throttling set
It for low pressure refrigerant, enters back into gas-liquid separator and is recycled, the entire flow process of refrigerant is merely through 7 He of first throttling device
4th throttling set 10 throttles twice, for existing Two-stage Compression system, reduces the throttling number of refrigerant, effectively
The line loss of reduction system and restriction loss, greatly improve system heating capacity and efficiency is horizontal.
The step of aperture of each throttling set and control valve is adjusted according to determining compressibility series includes: when determining
When compressibility is three stage compression system, first throttling device 7, the aperture of third throttling set 9, the 4th throttling set 10 are controlled
Greater than 0, the aperture of control second throttling device 8 is equal to 0, the second control valve 12 of control, the 4th control valve 14 and the 6th control valve
16 open, and the first control valve 11 of control, third control valve 13 and the 5th control valve 15 are closed, and Gas-supplying enthalpy-increasing system is switched to three
Grade compressibility.
When Gas-supplying enthalpy-increasing system is three stage compression system, the low-pressure gas refrigerant come out from gas-liquid separator 24 passes through pressure
Contracting machine 1 compress after become pressurized gas refrigerant, after enter the room heat exchanger 3 condense heat release be high-pressure liquid refrigerant, through first segment
After flowing 7 reducing pressure by regulating flow of device, into the first making-up air device 4 in shwoot, the gas coolant after shwoot passes through the first tonifying Qi pipeline 20
This branch enters compressor high pressure cylinder gas supplementing opening and is compressed, and the liquid coolant after shwoot throttles by third throttling set 9
After decompression, into the second making-up air device 5 in shwoot, the gas coolant after shwoot enters by second this branch of tonifying Qi pipeline 21
Compressor intermediate cavity gas supplementing opening is compressed, and the liquid coolant after shwoot is by second bypass line 18 this branch, by the
After four throttling sets, 10 reducing pressure by regulating flow through 2 evaporation endothermic of outdoor heat exchanger be low pressure refrigerant, enter back into gas-liquid separator 24 into
Row circulation, the entire flow process of refrigerant is merely through first throttling device 7, third throttling set 9 and the 4th throttling set 10 3
Secondary throttling reduces the throttling number of refrigerant for existing three stage compression system, and the pipeline damage of system is effectively reduced
Mistake and restriction loss, greatly improve system heating capacity and efficiency is horizontal.
The step of aperture of each throttling set and control valve is adjusted according to determining compressibility series includes: when determining
When compressibility is level Four compressibility, first throttling device 7, second throttling device 8, third throttling set 9, Section four are controlled
The aperture for flowing device 10 is greater than 0, and the 4th control valve 14 of control, the 5th control valve 15 and the 6th control valve 16 are opened, control first
Control valve 11, the second control valve 12 and third control valve 13 are closed, and Gas-supplying enthalpy-increasing system is switched to level Four compressibility.
When Gas-supplying enthalpy-increasing system is three stage compression system, the low-pressure gas refrigerant come out from gas-liquid separator 24 passes through pressure
Contracting machine 1 compress after become pressurized gas refrigerant, after enter the room heat exchanger 3 condense heat release be high-pressure liquid refrigerant, through first segment
After flowing 7 reducing pressure by regulating flow of device, into 4 shwoot of the first making-up air device, gas coolant after shwoot by the first tonifying Qi pipeline 20 this
Branch enters compressor high pressure cylinder gas supplementing opening and is compressed, and the liquid coolant after shwoot is by the throttling drop of second throttling device 8
After pressure, into 5 shwoot of the second making-up air device, gas coolant after shwoot enters compression by second tonifying Qi pipeline 21 this branch
Machine intermediate cavity gas supplementing opening is compressed, and the liquid coolant after shwoot enters third after 9 reducing pressure by regulating flow of third throttling set and mends
6 shwoot of device of air, the gas coolant after shwoot enter compressor low pressure (LP) cylinder gas supplementing opening by 22 this branch of third tonifying Qi pipeline
It is compressed, the liquid coolant after shwoot is through 2 evaporation endothermic of outdoor heat exchanger after 10 reducing pressure by regulating flow of the 4th throttling set
Low pressure refrigerant is entered back into gas-liquid separator and is recycled.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within principle.Above only
It is the preferred embodiment of the application, it is noted that for those skilled in the art, do not departing from this Shen
Several improvements and modifications please can also be made, these improvements and modifications also should be regarded as the guarantor of the application under the premise of technical principle
Protect range.
Claims (13)
1. a kind of Gas-supplying enthalpy-increasing system, which is characterized in that including compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3),
The first interface of first making-up air device (4) and the second making-up air device (5), first making-up air device (4) is connected to the interior
Heat exchanger (3), the tonifying Qi outlet of first making-up air device (4) are connected to the first gas supplementing opening of the compressor (1), and described the
The second interface of one making-up air device (4) is connected to the first interface of second making-up air device (5), second making-up air device
(5) tonifying Qi outlet is connected to the second gas supplementing opening of the compressor (1), and the second interface of second making-up air device (5) connects
It is connected to the outdoor heat exchanger (2), is arranged on the pipeline between first making-up air device (4) and the indoor heat exchanger (3)
Have first throttling device (7), is provided on the pipeline between second making-up air device (5) and first making-up air device (4)
Second throttling device (8) is connected with first on the pipeline between the first throttling device (7) and the indoor heat exchanger (3)
The other end of bypass line (17), first bypass line (17) is connected to the outdoor heat exchanger (2), first bypass
The first control valve (11) are provided on pipeline (17).
2. Gas-supplying enthalpy-increasing system according to claim 1, which is characterized in that the Gas-supplying enthalpy-increasing system further includes that third is mended
Device of air (6), the third making-up air device (6) setting first making-up air device (4) and second making-up air device (5) it
Between, the first interface of the third making-up air device (6) is connected to the second interface of first making-up air device (4), the third
The tonifying Qi outlet of making-up air device (6) is connected to the third gas supplementing opening of the compressor (1), and the of the third making-up air device (6)
Two interfaces are connected to the first interface of second making-up air device (5), the first interface of the third making-up air device (6) with it is described
Third throttling set (9), the second throttling device are provided on pipeline between the second interface of first making-up air device (4)
(8) on the pipeline between the third making-up air device (6) and second making-up air device (5).
3. Gas-supplying enthalpy-increasing system according to claim 2, which is characterized in that the second throttling device (8) and described the
It is provided on pipeline between three making-up air devices (6) the second bypass line (18), the other end of second bypass line (18)
It is connected to the outdoor heat exchanger (2), is provided with the second control valve (12) on second bypass line (18).
4. Gas-supplying enthalpy-increasing system according to claim 2, which is characterized in that the third throttling set (9) and described the
It is provided on pipeline between one making-up air device (4) third bypass line (19), the other end of the third bypass line (19)
It is connected to the outdoor heat exchanger (2), is provided with third control valve (13) on the third bypass line (19).
5. Gas-supplying enthalpy-increasing system according to claim 1, which is characterized in that the tonifying Qi of first making-up air device (4) goes out
Mouth is connected to first gas supplementing opening by the first tonifying Qi pipeline (20), and the 4th control is provided on the first tonifying Qi pipeline (20)
Valve (14) processed；And/or the tonifying Qi outlet of second making-up air device (5) is connected to described the by the second tonifying Qi pipeline (21)
Two gas supplementing openings are provided with the 5th control valve (15) on the second tonifying Qi pipeline (21).
6. Gas-supplying enthalpy-increasing system according to claim 2, which is characterized in that the tonifying Qi of the third making-up air device (6) goes out
Mouth is connected to the third gas supplementing opening by third tonifying Qi pipeline (22), and the 6th control is provided on the third tonifying Qi pipeline (22)
Valve (16) processed.
7. Gas-supplying enthalpy-increasing system according to claim 2, which is characterized in that the outdoor heat exchanger (2) is changed close to interior
One end of hot device (3) is provided with the 4th throttling set (10), first making-up air device (4), second making-up air device (5) and
The third making-up air device (6) is connected to the outdoor heat exchanger (2) by the 4th throttling set (10).
8. a kind of control method of the Gas-supplying enthalpy-increasing system as described in any one of claims 1 to 7 characterized by comprising
Obtain outdoor environment temperature；
Compressibility series is determined according to outdoor environment temperature；
The aperture of each throttling set and control valve is adjusted according to determining compressibility series.
9. control method according to claim 8, which is characterized in that determine compressibility series according to outdoor environment temperature
The step of include:
When outdoor environment temperature TS meets TS >=a, determine that Gas-supplying enthalpy-increasing system is single stage compress system；
When outdoor environment temperature TS meets a > TS >=b, determine that Gas-supplying enthalpy-increasing system is Two-stage Compression system；
When outdoor environment temperature TS meets b > TS >=c, determine that Gas-supplying enthalpy-increasing system is three stage compression system；
When outdoor environment temperature TS meets TS < c, determine that Gas-supplying enthalpy-increasing system is level Four compressibility, wherein a > b > c.
10. control method according to claim 9, which is characterized in that adjust each section according to determining compressibility series
Stream device and control valve aperture the step of include:
When determining compressibility is single stage compress system, the aperture of the 4th throttling set (10) of control is greater than 0, control first
The aperture of throttling set (7), second throttling device (8) and third throttling set (9) is equal to 0, and control the first control valve (11) is beaten
It opens, control the second control valve (12) to the 6th control valve (16) is closed, and Gas-supplying enthalpy-increasing system is switched to single stage compress system.
11. control method according to claim 9, which is characterized in that adjust each section according to determining compressibility series
Stream device and control valve aperture the step of include:
When determining compressibility is Two-stage Compression system, control first throttling device (7), the 4th throttling set (10) are opened
Degree be greater than 0, control second throttling device (8) and third throttling set (9) aperture be equal to 0, control third control valve (13) and
4th control valve (14) is opened, control the first control valve (11), the second control valve (12), third control valve (13) and the 5th control
Valve (15) is closed, and Gas-supplying enthalpy-increasing system is switched to Two-stage Compression system.
12. control method according to claim 9, which is characterized in that adjust each section according to determining compressibility series
Stream device and control valve aperture the step of include:
When determining compressibility is three stage compression system, first throttling device (7), third throttling set (9), the 4th are controlled
The aperture of throttling set (10) is greater than 0, and the aperture of control second throttling device (8) is equal to 0, control the second control valve (12), the
Four control valves (14) and the 6th control valve (16) are opened, control the first control valve (11), third control valve (13) and the 5th control
Valve (15) is closed, and Gas-supplying enthalpy-increasing system is switched to three stage compression system.
13. control method according to claim 9, which is characterized in that adjust each section according to determining compressibility series
Stream device and control valve aperture the step of include:
When determining compressibility is level Four compressibility, first throttling device (7), second throttling device (8), third are controlled
Throttling set (9), the 4th throttling set (10) aperture be greater than 0, the 4th control valve (14) of control, the 5th control valve (15) and the
Six control valves (16) are opened, and control the first control valve (11), the second control valve (12) and third control valve (13) are closed, by tonifying Qi
Increasing enthalpy system is switched to level Four compressibility.
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| CN201910521217.XA CN110274400A (en) | 2019-06-17 | 2019-06-17 | Vapor-supplementing and enthalpy-increasing system and control method thereof |
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| CN201910521217.XA CN110274400A (en) | 2019-06-17 | 2019-06-17 | Vapor-supplementing and enthalpy-increasing system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111928516A (en) * | 2020-07-28 | 2020-11-13 | 青岛海尔空调电子有限公司 | Split type air-cooled heat pump system |
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