CN106871479A - A kind of cold recovery formula varying capacity air source heat pump system - Google Patents
A kind of cold recovery formula varying capacity air source heat pump system Download PDFInfo
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- CN106871479A CN106871479A CN201710245733.5A CN201710245733A CN106871479A CN 106871479 A CN106871479 A CN 106871479A CN 201710245733 A CN201710245733 A CN 201710245733A CN 106871479 A CN106871479 A CN 106871479A
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
A kind of cold recovery formula varying capacity air source heat pump system, is related to the heating for either alternatively or simultaneously operating and refrigeration combined system, and the first subsystem and the second subsystem share binary channels variable capacity heat exchanger；Heat exchanger main body includes two refrigerant tube side passages independent mutually, and two refrigerants of passage carry out heat exchange with the heat medium water of shell side passage simultaneously；Shell side passage sets up water-borne heating cycle by hot water circulating pipeline and hot water circulating pump；First subsystem and the second subsystem are connected to two refrigerant tube side passages by control valve group, set up the controllable refrigerant circulation loop of dynamic；Heat pump is by controlling the on off state of the control valve group of binary channels variable capacity heat exchanger, binary channels transfiguration pattern is realized by binary channels variable capacity heat exchanger, can effectively using the heat exchange area of shell and tube exchanger, it is thus able to meet the requirement that high load working condition stabilization is exerted oneself, unit overall operation efficiency is greatly promoted, so as to the high energy efficiency for realizing heat pump is run.
Description
Technical field
The present invention relates to the heating for either alternatively or simultaneously operating and refrigeration combined system, more particularly to one kind is based on heat supply,
The heat-pump-type cold-hot combined supply system of cold supply is taken into account simultaneously.
Background technology
The proposition of intensive social construction slogan, promotes in structure trunk that function integration degree is higher, accomplishes maximum
Change using energy source and have become current subject under discussion.Nowadays, commercially more and more higher is required with businessfice：Air side requirement control is suitable
Humiture and air purity；It is annual suitable with the requirement of water side coolant-temperature gage.And the mode that traditional Cooling and Heat Source is supplied separately to exists
Being misplaced for resource obviously is caused in Various Seasonal, at the same time investment of equipment cost is also greatly promoted.As shown in Figure 1 is skilful
Gram force processing technology, chocolate product by raw material mixing thawing, fine grinding, refining, sieving, insulation, temperature adjustment, pour mold forming and cold
But hardening is finally packaged into product, not only needs substantial amounts of heat and cold to supply, and each process procedure has to temperature
Strict requirements.Traditional temperature control is typically heated by electrical heating, steam or burning boiler supplies heat, and to difference
Temperature requirement obtains technique often by different heat-supplying modes to realize, this adds increased enterprise operation cost and reduce
Operating efficiency, while Based Intelligent Control can not be realized, it is necessary to a large amount of human inputs.Accordingly, it would be desirable to original power consumption production technology
Flow is transformed, and research and development disclosure satisfy that the heating of food processing technology requirement and the association system of refrigeration.Chinese invention patent
" kitchen heat pump multi-mode operation control method and its control device behind restaurant " (patent of invention number：201410478406.0, award
Power notification number：CN104197584B kitchen heat pump multi-mode operation control method and its control dress behind a kind of restaurant) are disclosed
Put, be related to the control of the association system for heating and freezing, more particularly to a kind of hot water suitable for kitchen behind restaurant is supplied, cooling is removed
The control method and equipment of the heat pump composite system of wet and cold storing and fresh-keeping, control device is by detection and compares operational mode parameter
Measured value and setting value, control Multi-mode refrigeration agent circulation loop switching mechanism changes the circulating path of refrigerant, controls meal
Kitchen heat pump runs according to default operational mode behind shop, realizes that automatic multi mode runs.
On the other hand, the existing heat pump with heat recovery function is generally only using an independent condenser and one
Vertical heat regenerator connection composition heats heat exchanger, and not only take up room big but also high cost." package is changed Chinese utility model patent
Hot device and air-conditioning " (utility model patent number：201420417296.2, Authorization Notice No.：CN204084963U one kind) is disclosed
Case tube heat exchanger and the air-conditioning including the case tube heat exchanger, the case tube heat exchanger include condenser and heat regenerator, condenser one
End is provided with coolant intake and cooling water outlet mouthful, and other end sealing is set；Heat regenerator one end is provided with hot water inlet and goes out with hot water
Mouthful, one end that the other end is sealed with condenser is fixedly connected：Fix and connect by by condenser and the respective sealed end of heat regenerator
Connect, and heat regenerator is coupled together with the refrigerant passage of condenser by connecting tube, both can guarantee that case tube heat exchanger is normal
Condensation function and heat recovery function, moreover it is possible to make the compact conformation of case tube heat exchanger, save installing space, reduces cost.But, should
Prior art substantially simply mechanically designs two independent functional parts and is integrated, and its respective function is still
It is independent mutually, the overall heat exchange efficiency of heat exchanger can not be improved.
The content of the invention
It is cold for solving heat pump the invention aims to provide a kind of cold recovery formula varying capacity air source heat pump system
Reduce equipment yardstick during hot co-feeding system substitution traditional heating mode, save equipment investment and operating cost, improve heat exchange
The technical problem of efficiency and unit efficiency.
The present invention solves the technical scheme that is used of above-mentioned technical problem：
A kind of cold recovery formula varying capacity air source heat pump system, including the first compressor and cold recovery exchanger composition
The first subsystem, the second compressor and finned heat exchanger composition the second subsystem, it is characterised in that；
Described the first subsystem and the second subsystem is used in conjunction with a binary channels variable capacity heat exchanger as water-cooled
Condenser；Described binary channels variable capacity heat exchanger includes heat exchanger main body and one group of control being made up of magnetic valve and check valve
Valve group processed；Heat exchanger main body includes being placed in two refrigerant tube side passages independent mutually of same shell side passage, two refrigeration
Refrigerant in agent tube side passage carries out heat exchange with the water in shell side passage simultaneously；The shell side passage of heat exchanger main body is by warm
Water circulation pipe and hot water circulating pump set up water-borne heating cycle；
First subsystem and the second subsystem are connected to two refrigerant tube side passages by described control valve group, set up
The controllable refrigerant circulation loop of dynamic；Heat pump is by controlling the switch of the control valve group of binary channels variable capacity heat exchanger
State, realizes the dynamic multi-mode operation of heat pump.
A kind of preferably technical scheme of cold recovery formula varying capacity air source heat pump system of the invention, it is characterised in that
Described binary channels variable capacity heat exchanger is including the shell and tube exchanger as heat exchanger main body and is connected to case tube heat exchanger
Refrigerant tube side passage control valve group；Two the first independent mutually coolant channels are provided with described heat exchanger main body
With second refrigerant passage, two refrigerant tube side passages are placed in a shared shell side passage；Described control valve group bag
Include three magnetic valves and two check valves for being connected to refrigerant tube side passage；Described magnetic valve includes being connected to the first refrigeration
First magnetic valve of agent channel outlet, is connected between the outlet of the first coolant channel and second refrigerant feeder connection second
Magnetic valve, and it is connected to the 3rd magnetic valve of second refrigerant channel outlet；Described check valve includes being connected to the second system
First check valve of coolant channel entrance, and be connected in parallel between second refrigerant channel outlet and the first electromagnetic valve outlet
The second check valve；The exhaust outlet of the first compressor is connected to the entrance of the first coolant channel by the first four-way valve；First
After the outlet of magnetic valve and the outlet of the second check valve are connected in parallel, cold recovery exchanger is connected to by the first expansion valve
Coolant channel, then the air inlet of the first compressor is connected to by the first four-way valve；The exhaust outlet of the second compressor is by the
Two four-way valves are connected to the entrance of the first check valve；The outlet of the 3rd magnetic valve is connected to fin type heat exchange by the second expansion valve
The coolant channel of device, then the air inlet of the second compressor is connected to by the second four-way valve.
A kind of preferred technical scheme of binary channels variable capacity heat exchanger of the invention, it is characterised in that described heat exchange
The vertical structure that device main body is connected up and down using shell side passage, the first coolant channel is placed in the top of shell side passage, the second system
Coolant channel is placed in the bottom of shell side passage；The high temperature sensible heat of refrigerant is passed on shell side passage in the first coolant channel
The water in portion, forms high temperature sensible heat transfer area；The condensation latent heat of refrigerant is passed under shell side passage in second refrigerant passage
The water in portion, forms condensation latent heat heat transfer zone.
A kind of superior technique scheme of cold recovery formula varying capacity air source heat pump system of the invention, it is characterised in that
Be provided with the first reservoir on connecting line between the first coolant channel and the first expansion valve, second refrigerant passage with
Connecting line between second expansion valve is provided with the second reservoir.
A kind of improved technical scheme of cold recovery formula varying capacity air source heat pump system of the invention, it is characterised in that
Described dynamic multi-mode operation includes following four operational mode：
(1) the first cold and hot balanced mode of subsystem：First compressor start, the second compressor stops, and the first magnetic valve is beaten
Open, the second closed electromagnetic valve, the refrigerant circulating path of this pattern is as follows：
First the-the first reservoir of compressor the-the first four-way valve the-the first magnetic valve of the-the first coolant channel-the first expands
Valve-the four-way valve of cold recovery exchanger-the first the-the first compressor of-the first gas-liquid separator；
(2) second subsystem air source hot-water modes：First compressor stops, the second compressor start, the second magnetic valve
Close, the 3rd magnetic valve is opened, the refrigerant circulating path of this pattern is as follows：
Second the-the first check valve of the-the second four-way valve of compressor-second refrigerant passage the-the second liquid storage of the-the three magnetic valve
The expansion valve of device-the second-four-way valve of finned heat exchanger-the second the-the second compressor of-the second gas-liquid separator；
(3) the cold and hot aqueous mode of dual system constant volume：First compressor and the second compressor start simultaneously, and the first magnetic valve is beaten
Open, the second closed electromagnetic valve, the 3rd magnetic valve is opened, the refrigerant circulating path of the first subsystem is as follows：
First the-the first reservoir of compressor the-the first four-way valve the-the first magnetic valve of the-the first coolant channel-the first expands
Valve-the four-way valve of cold recovery exchanger-the first the-the first compressor of-the first gas-liquid separator；
The refrigerant circulating path of the second subsystem is as follows：
Second the-the first check valve of the-the second four-way valve of compressor-second refrigerant passage the-the second liquid storage of the-the three magnetic valve
The expansion valve of device-the second-four-way valve of finned heat exchanger-the second the-the second compressor of-the second gas-liquid separator；
(4) binary channels transfiguration operational mode：First compressor start, the second compressor stops, the first closed electromagnetic valve, the
Two magnetic valves are opened, and the 3rd closed electromagnetic valve, the refrigerant circulating path of this pattern is as follows：
First the-the second magnetic valve of compressor the-the first coolant channel of the-the first four-way valve-second refrigerant passage-the second is single
Compressed to-the first expansion valve of the reservoir of valve-the first-- the first gas-liquid separator of the four-way valve of cold recovery exchanger-the first-the first
Machine.
A kind of further improved technical scheme of cold recovery formula varying capacity air source heat pump system of the invention, it is special
It is that described air source heat pump system reclaims the heat exchange area that cold changes finned heat exchanger according to refrigeration to levy, and is ensureing machine
The entire system size of reduction heat pump while group heating capacity：
The excursion of the heat exchange area S of finned heat exchanger is 0~W2/ q,
The heat exchange area S of cold recovery exchanger1Excursion be 0~(W1-W2)/q1,
Wherein, unit heating capacity Q1=W1+Pi, kw；W1The refrigerating capacity of vaporizer side, kw during for system heating operation；PiFor
System heating operation input power, kw；W2For refrigeration reclaims cold, kw；S=W2/ q is the heat exchange area of finned heat exchanger,
m2；Q is evaporation side unit heat exchange area refrigerating capacity, kw/m under heating condition2；S1=(W1-W2)/q1It is cold recovery exchanger
Heat exchange area, m2；q1It is cold recovery exchanger unit heat exchange area refrigerating capacity, kw/m2。
The beneficial effects of the invention are as follows：
1st, cold recovery formula varying capacity air source heat pump system of the invention, is realized by binary channels variable capacity heat exchanger
Binary channels transfiguration pattern, can effectively using the heat exchange area of shell and tube exchanger, it is thus possible to meet high load working condition stabilization
The requirement exerted oneself, unit overall operation efficiency is greatly promoted, so as to the high energy efficiency for realizing heat pump is run.
2nd, cold recovery formula varying capacity air source heat pump system of the invention, can using the binary channels of varying capacity mode operation
Varying capacity heat exchanger and cold recovery exchanger realize part cold recovery, can greatly promote the supercooling of refrigerant in subsystem
Degree, so as to improve the refrigerating capacity of system.
3rd, cold recovery formula varying capacity air source heat pump system of the invention, a set of water-cooled is shared by two sets of refrigeration systems
Condenser realizes coupling operation, using cold recovery exchanger to reduce finned evaporator size, so as to reach reduction system
The purpose of size, makes cold-hot combined supply system low consumption stable operation under different cooling and heating loads, reaches the purpose of energy-efficient operation.
Brief description of the drawings
Fig. 1 is chocolate processing process figure；
Fig. 2 is the systematic schematic diagram of cold recovery formula varying capacity air source heat pump system of the invention；
Fig. 3 is the assembling structure schematic diagram of cold recovery formula varying capacity air source heat pump system of the invention；
Fig. 4 is the structural representation of binary channels variable capacity heat exchanger of the invention；
Fig. 5 is the operational mode schematic diagram of cold recovery formula varying capacity air source heat pump system of the invention.
The reference of each part in above figure：The subsystems of 1- first, the compressors of 10- first, the four-way valves of 11- first, 12-
First expansion valve, 13- cold recovery exchangers, 14- circulating chilled water pipelines, the gas-liquid separators of 15- first, 16- the first temperature-sensitive bags,
The reservoirs of 17- first, the defrosting Unidirectional solenoid valves of 18- first, the subsystems of 2- second, the compressors of 20- second, the four-way valves of 21- second,
The expansion valves of 22- second, 23- finned heat exchangers, 24- blower fans, the gas-liquid separators of 25- second, 26- the second temperature-sensitive bags, 27- second
Reservoir, the defrosting Unidirectional solenoid valves of 28- second, 3- binary channels variable capacity heat exchangers, 30- heat exchanger main bodys, 31- first freezes
Agent passage, 32- second refrigerant passages, the magnetic valves of 33- first, the magnetic valves of 34- second, the magnetic valves of 35- the 3rd, 36- first is single
To valve, the check valves of 37- second, 38- hot water circulating pipelines, 39- hot water circulating pumps.
Specific embodiment
For better understanding of above-mentioned technical proposal of the invention, carry out with reference to the accompanying drawings and examples further
Describe in detail.Fig. 2 and Fig. 3 are one embodiment of cold recovery formula varying capacity air source heat pump system of the invention, including the
23 groups of first subsystem 1 of one compressor 10 and the composition of cold recovery exchanger 13, the second compressor 20 and finned heat exchanger
Into the second subsystem 2, as shown in Fig. 2 the first described subsystem 1 and the second subsystem 2 be used in conjunction with a binary channels can
Varying capacity heat exchanger 3 is used as water-cooled condenser；Described binary channels variable capacity heat exchanger 3 includes heat exchanger main body 30 and one group
The control valve group being made up of magnetic valve and check valve；Heat exchanger main body 30 is independent mutually including being placed in two of same shell side passage
Refrigerant tube side passage, refrigerant in two refrigerant tube side passages carries out heat exchange with the water in shell side passage simultaneously；
The shell side passage of heat exchanger main body 30 sets up water-borne heating cycle by hot water circulating pipeline 38 and hot water circulating pump 39；First son
The subsystem 2 of system 1 and second is connected to two refrigerant tube side passages by described control valve group, sets up the controllable system of dynamic
Refrigerant cycle loop；Heat pump realizes heat by controlling the on off state of the control valve group of binary channels variable capacity heat exchanger 3
The dynamic multi-mode operation of pumping system.By taking certain chocolate processing producing line as an example, 1T raw materials are from being machined to finally be packaged into product
Production process needs to stablize 100KW heats and 50KW refrigeration requirements.In the present embodiment, the first subsystem 1 is steamed using bushing type
Hair device pours mold forming, hardening by cooling and packaging as cold recovery exchanger 13, recovery section cold for chocolate processing
Supplied etc. the cold in technical process；Second subsystem 2 uses finned heat exchanger 23 from air-source draw heat, according to cold and hot
The difference of amount demand increases the overall heating capacity of heat pump.
In the embodiment shown in fig. 4, described binary channels variable capacity heat exchanger 3 is included as heat exchanger main body 30
Shell and tube exchanger and be connected to case tube heat exchanger refrigerant tube side passage control valve group；In described heat exchanger main body 30
It is provided with two independent mutually the first coolant channels 31 and second refrigerant passage 32, two refrigerant tube side passages 31 and 32
It is placed in a shared shell side passage；Described control valve group include be connected to refrigerant tube side passage three magnetic valves and
Two check valves；Described magnetic valve includes being connected to the first magnetic valve 33 of the outlet of the first coolant channel 31, is connected to the
One coolant channel 31 exports the second magnetic valve 34 and entrance of second refrigerant passage 32 between, and is connected to the second refrigeration
3rd magnetic valve 35 of the outlet of agent passage 32；Described check valve includes that be connected to the entrance of second refrigerant passage 32 first is single
To valve 36, and be connected in parallel second refrigerant passage 32 export and the first magnetic valve 33 export between the second check valve
37；The exhaust outlet of the first compressor 10 is connected to the entrance of the first coolant channel 31 by the first four-way valve 11；First electromagnetism
After the outlet of valve 33 and the outlet of the second check valve 37 are connected in parallel, cold recovery exchanger is connected to by the first expansion valve 12
13 coolant channel, then the air inlet of the first compressor 10 is connected to by the first four-way valve 11；The row of the second compressor 20
Gas port is connected to the entrance of the first check valve 36 by the second four-way valve 21；The outlet of the 3rd magnetic valve 35 passes through the second expansion valve
22 coolant channels for being connected to finned heat exchanger 23, then the air inlet of the second compressor 20 is connected to by the second four-way valve 21
Mouthful.
One embodiment of binary channels variable capacity heat exchanger of the invention, described heat exchanger main body 30 uses shell
The vertical structure that Cheng Tongdao is connected up and down, the first coolant channel 31 is placed in the top of shell side passage, second refrigerant passage 32
It is placed in the bottom of shell side passage；The high temperature sensible heat of refrigerant passes to shell side channel upper in the first coolant channel 31
Water, forms high temperature sensible heat transfer area；The condensation latent heat of refrigerant passes to shell side beneath galleries in second refrigerant passage 32
Water, form condensation latent heat heat transfer zone.
The embodiment of the cold recovery formula varying capacity air source heat pump system of the invention according to Fig. 2, in the first system
Connecting line between the expansion valve 12 of coolant channel 31 and first is provided with the first reservoir 17, second refrigerant passage 32 with
Connecting line between second expansion valve 22 is provided with the second reservoir 27.
The embodiment of the cold recovery formula varying capacity air source heat pump system of the invention according to Fig. 5, described is dynamic
State multi-mode operation includes following four operational mode：
(1) the first cold and hot balanced mode of subsystem：First compressor 10 starts, and the second compressor 20 stops, the first electromagnetism
Valve 33 is opened, and the second magnetic valve 34 is closed, and the refrigerant circulating path of this pattern is as follows：
First compressor 10- the first four-way valve 11- the first coolant channel 31- the first magnetic valve the first reservoirs of 33- 17-
First the first compressors of expansion valve 12- cold recovery exchangers 13- the first four-way valve 11- the first gas-liquid separator 15- 10；
Under this pattern, the refrigerant in the first coolant channel 31 carries out heat exchange with the water in shell side passage, by first
Subsystem 1 produces the heat energy that cold recovery exchanger 13 is reclaimed during cold water, in passing to the shell side passage of heat exchanger main body 30
The hot water produced.
(2) second subsystem air source hot-water modes：First compressor 10 stops, and the second compressor 20 starts, the second electricity
Magnet valve 34 is closed, and the 3rd magnetic valve 35 is opened, and the refrigerant circulating path of this pattern is as follows：
The magnetic valve 35- of second compressor 20- the second four-way valve 21- the first check valve 36- second refrigerant passages 32- the 3rd
Second reservoir 27- the second expansion valve 22- finned heat exchangers 23- the second four-way valve the second gas-liquid separators of 21- 25- second is pressed
Contracting machine 20；
Under this pattern, the refrigerant in second refrigerant passage 32 carries out heat exchange with the water in shell side passage, by second
The heat energy that the finned heat exchanger 23 of subsystem 2 absorbs from air-source, passes to what is produced in the shell side passage of heat exchanger main body 30
Hot water.
(3) the cold and hot aqueous mode of dual system constant volume：First compressor 10 and the second compressor 20 start simultaneously, the first magnetic valve
33 are opened, and the second magnetic valve 34 is closed, and the 3rd magnetic valve 35 is opened, and the refrigerant circulating path of the first subsystem 1 is as follows：
First compressor 10- the first four-way valve 11- the first coolant channel 31- the first magnetic valve the first reservoirs of 33- 17-
First the first compressors of expansion valve 12- cold recovery exchangers 13- the first four-way valve 11- the first gas-liquid separator 15- 10；
The refrigerant circulating path of the second subsystem 2 is as follows：
The magnetic valve 35- of second compressor 20- the second four-way valve 21- the first check valve 36- second refrigerant passages 32- the 3rd
Second reservoir 27- the second expansion valve 22- finned heat exchangers 23- the second four-way valve the second gas-liquid separators of 21- 25- second is pressed
Contracting machine 20；
Under the cold and hot aqueous mode of dual system constant volume, the refrigerant in the first coolant channel 31 enters with the water in shell side passage
Row heat exchange, the heat energy that cold recovery exchanger 13 in the cold water producing process of the first subsystem 1 is reclaimed, passes to heat exchanger master
The hot water produced in the shell side passage of body 30；Meanwhile, the refrigerant in second refrigerant passage 32 is carried out with the water in shell side passage
Heat exchange, the heat energy that the finned heat exchanger 23 of the second subsystem 2 is absorbed from air-source passes to the shell side of heat exchanger main body 30
The hot water produced in passage.
(4) binary channels transfiguration pattern：First compressor 10 starts, and the second compressor 20 stops, and the first magnetic valve 33 is closed,
Second magnetic valve 34 is opened, and the 3rd magnetic valve 35 is closed, and the refrigerant circulating path of this pattern is as follows：
First compressor 10- the first four-way valve 11- the first coolant channel 31- the second magnetic valve 34- second refrigerants lead to
Road 32- the second check valve 37- the first reservoir 17- the first expansion valve 12- cold recovery exchangers the first four-way valves of 13- 11-
One the first compressors of gas-liquid separator 15- 10.
Under binary channels transfiguration pattern, the first compressor of cold recovery formula varying capacity air source heat pump system of the invention
The high-temperature high-pressure refrigerant gas of 10 exhaust outlets discharge, enters in binary channels variable capacity heat exchanger 3 through the first four-way valve 11, stream
After carrying out first paragraph heat exchange through the first coolant channel 31, form refrigerant air-liquid mixture and returned to by the second magnetic valve 34
In binary channels variable capacity heat exchanger 3, the water side again with heat exchanger main body 30 in second refrigerant passage 32 fully exchanges heat,
The refrigerant liquid of normal pressure and temperature high is condensed into, the throttling action through the first expansion valve 12 after the second check valve 37 is flowed through, is changed into low
Compression refrigerant liquid, into the bushing type evaporator as cold recovery exchanger 13, heat absorption is evaporated to low pressure refrigerant gas
First gas-liquid separator 15 is entered by the first four-way valve 11, the air inlet of the first compressor 10 is eventually entered into, binary channels is formed and is become
Hold the refrigerant circulating path of mode operation；Under this pattern, refrigerant passes through the first coolant channel 31 and second refrigerant
Water in passage 32, with shell side passage carries out heat exchange twice, by cold recovery exchange in the cold water producing process of the first subsystem 1
The heat energy that device 13 is reclaimed, passes to the hot water produced in the shell side passage of heat exchanger main body 30.
Under binary channels transfiguration pattern, the first compressor of cold recovery formula varying capacity air source heat pump system of the invention
The high-temperature high-pressure refrigerant gas of 10 exhaust outlets discharge, enters in binary channels variable capacity heat exchanger 3 through the first four-way valve 11, stream
After carrying out first paragraph heat exchange through the first coolant channel 31, form refrigerant air-liquid mixture and returned to by the second magnetic valve 34
In binary channels variable capacity heat exchanger 3, the water side again with heat exchanger main body 30 in second refrigerant passage 32 fully exchanges heat,
The refrigerant liquid of normal pressure and temperature high is condensed into, the throttling action through the first expansion valve 12 after the second check valve 37 is flowed through, is changed into low
Compression refrigerant liquid, into the bushing type evaporator as cold recovery exchanger 13, heat absorption is evaporated to low pressure refrigerant gas
First gas-liquid separator 15 is entered by the first four-way valve 11, the air inlet of the first compressor 10 is eventually entered into, binary channels is formed and is become
Hold the refrigerant circulating path of mode operation.
Cold recovery formula varying capacity air source heat pump system of the invention, the binary channels using varying capacity mode operation is variable
Capacity heat exchangers 3, can greatly promote the degree of supercooling of refrigerant in the first subsystem 1, so as to improve the refrigerating capacity of system.
When two subsystem 2 is shut down, binary channels transfiguration pattern can effectively using the heat exchange area of shell and tube exchanger, it is thus possible to meets
The requirement that high load working condition stabilization is exerted oneself, unit overall operation efficiency is greatly promoted, so as to the high energy efficiency for realizing heat pump is transported
OK.
One embodiment of cold recovery formula varying capacity air source heat pump system of the invention, described air-source heat
Pumping system reclaims the heat exchange area that cold changes finned heat exchanger according to refrigeration, reduction heat while unit heating capacity is ensured
The entire system size of pumping system：
The excursion of the heat exchange area S of finned heat exchanger 23 is 0~W2/ q,
The heat exchange area S of cold recovery exchanger 131Excursion be 0~(W1-W2)/q1,
Wherein, unit heating capacity Q1=W1+Pi, kw；W1The refrigerating capacity of vaporizer side, kw during for system heating operation；PiFor
System heating operation input power, kw；W2For refrigeration reclaims cold, kw；S=W2/ q is the heat exchange area of finned heat exchanger 23,
m2；Q is evaporation side unit heat exchange area refrigerating capacity, kw/m under heating condition2；S1=(W1-W2)/q1It is cold recovery exchanger 13
Heat exchange area, m2；q1It is the unit heat exchange area refrigerating capacity of cold recovery exchanger 13, kw/m2。
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate of the invention
Technical scheme, and be not used as being limitation of the invention, it is any based on connotation of the invention to embodiment described above
Change, the modification made, will all fall in scope of the claims of the invention.
Claims (6)
1. what a kind of cold recovery formula varying capacity air source heat pump system, including the first compressor and cold recovery exchanger were constituted
Second subsystem of the first subsystem, the second compressor and finned heat exchanger composition, it is characterised in that：
Described the first subsystem and the second subsystem is used in conjunction with a binary channels variable capacity heat exchanger and is condensed as water-cooled
Device；Described binary channels variable capacity heat exchanger includes heat exchanger main body and one group of control valve being made up of magnetic valve and check valve
Group；Heat exchanger main body includes being placed in two refrigerant tube side passages independent mutually of same shell side passage, two refrigerant pipes
Refrigerant in Cheng Tongdao carries out heat exchange with the water in shell side passage simultaneously；The shell side passage of heat exchanger main body is followed by hot water
Endless tube road and hot water circulating pump set up water-borne heating cycle；
First subsystem and the second subsystem are connected to two refrigerant tube side passages by described control valve group, set up dynamic
Controllable refrigerant circulation loop；Heat pump is by controlling the switch shape of the control valve group of binary channels variable capacity heat exchanger
State, realizes the dynamic multi-mode operation of heat pump.
2. cold recovery formula varying capacity air source heat pump system according to claim 1, it is characterised in that described bilateral
Road variable capacity heat exchanger is included as the shell and tube exchanger and the refrigerant pipe for being connected to case tube heat exchanger of heat exchanger main body
The control valve group of Cheng Tongdao；Two the first independent mutually coolant channels and the second refrigeration are provided with described heat exchanger main body
Agent passage, two refrigerant tube side passages are placed in a shared shell side passage；Described control valve group includes being connected to system
Three magnetic valves and two check valves of cryogen tube side passage；Described magnetic valve includes being connected to the outlet of the first coolant channel
The first magnetic valve, be connected to the first coolant channel outlet and second refrigerant feeder connection between the second magnetic valve, with
And it is connected to the 3rd magnetic valve of second refrigerant channel outlet；Described check valve includes that being connected to second refrigerant passage enters
First check valve of mouth, and second be connected in parallel between second refrigerant channel outlet and the first electromagnetic valve outlet is unidirectional
Valve；The exhaust outlet of the first compressor is connected to the entrance of the first coolant channel by the first four-way valve；First magnetic valve goes out
After the outlet of mouth and the second check valve is connected in parallel, the refrigerant for being connected to cold recovery exchanger by the first expansion valve leads to
Road, then the air inlet of the first compressor is connected to by the first four-way valve；The exhaust outlet of the second compressor passes through the second four-way valve
It is connected to the entrance of the first check valve；The outlet of the 3rd magnetic valve is connected to the refrigeration of finned heat exchanger by the second expansion valve
Agent passage, then the air inlet of the second compressor is connected to by the second four-way valve.
3. cold recovery formula varying capacity air source heat pump system according to claim 2, it is characterised in that in the first refrigeration
Connecting line between agent passage and the first expansion valve is provided with the first reservoir, in second refrigerant passage and the second expansion valve
Between connecting line be provided with the second reservoir.
4. cold recovery formula varying capacity air source heat pump system according to claim 2, it is characterised in that described heat exchange
The vertical structure that device main body is connected up and down using shell side passage, the first coolant channel is placed in the top of shell side passage, the second system
Coolant channel is placed in the bottom of shell side passage；The high temperature sensible heat of refrigerant is passed on shell side passage in the first coolant channel
The water in portion, forms high temperature sensible heat transfer area；The condensation latent heat of refrigerant is passed under shell side passage in second refrigerant passage
The water in portion, forms condensation latent heat heat transfer zone.
5. cold recovery formula varying capacity air source heat pump system according to claim 1, it is characterised in that described dynamic
Multi-mode operation includes following four operational mode：
(1) the first cold and hot balanced mode of subsystem：First compressor start, the second compressor stops, and the first magnetic valve is opened, the
Two closed electromagnetic valves, the refrigerant circulating path of this pattern is as follows：
First the-the first expansion valve of compressor the-the first four-way valve the-the first coolant channel the-the first reservoir of the-the first magnetic valve-cold
Amount reclaims four-way valve the-the first compressor of the-the first gas-liquid separator of heat exchanger-the first；
(2) second subsystem air source hot-water modes：First compressor stops, the second compressor start, the second closed electromagnetic valve,
3rd magnetic valve is opened, and the refrigerant circulating path of this pattern is as follows：
Second the-the first check valve of the-the second four-way valve of compressor-second refrigerant passage the-the second reservoir-the of the-the three magnetic valve
Two expansion valves-the four-way valve of finned heat exchanger-the second the-the second compressor of-the second gas-liquid separator；
(3) the cold and hot aqueous mode of dual system constant volume：First compressor and the second compressor start simultaneously, and the first magnetic valve is opened, the
Two closed electromagnetic valves, the 3rd magnetic valve is opened, and the refrigerant circulating path of the first subsystem is as follows：
First the-the first expansion valve of compressor the-the first four-way valve the-the first coolant channel the-the first reservoir of the-the first magnetic valve-cold
Amount reclaims four-way valve the-the first compressor of the-the first gas-liquid separator of heat exchanger-the first；
The refrigerant circulating path of the second subsystem is as follows：
Second the-the first check valve of the-the second four-way valve of compressor-second refrigerant passage the-the second reservoir-the of the-the three magnetic valve
Two expansion valves-the four-way valve of finned heat exchanger-the second the-the second compressor of-the second gas-liquid separator；
(4) binary channels transfiguration operational mode：First compressor start, the second compressor stops, the first closed electromagnetic valve, the second electricity
Magnet valve is opened, and the 3rd closed electromagnetic valve, the refrigerant circulating path of this pattern is as follows：
First the-the second magnetic valve of compressor the-the first coolant channel of the-the first four-way valve-second refrigerant passage-the second is unidirectional
- the first expansion valve of the reservoir of valve-the first-four-way valve of cold recovery exchanger-the first the-the first compressor of-the first gas-liquid separator.
6. cold recovery formula varying capacity air source heat pump system according to claim 1, it is characterised in that described air
Source heat pump system reclaims the heat exchange area that cold changes finned heat exchanger according to refrigeration, is contracted while unit heating capacity is ensured
The entire system size of reduction of heat pumping system：
The excursion of the heat exchange area S of finned heat exchanger is 0~W2/ q,
The heat exchange area S of cold recovery exchanger1Excursion be 0~(W1-W2)/q1,
Wherein, unit heating capacity Q1=W1+Pi, kw；W1The refrigerating capacity of vaporizer side, kw during for system heating operation；PiIt is system
Heating operation input power, kw；W2For refrigeration reclaims cold, kw；S=W2/ q is the heat exchange area of finned heat exchanger, m2；Q is
Evaporation side unit heat exchange area refrigerating capacity, kw/m under heating condition2；S1=(W1-W2)/q1It is the heat-transfer surface of cold recovery exchanger
Product, m2；q1It is cold recovery exchanger unit heat exchange area refrigerating capacity, kw/m2。
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| CN201710245733.5A CN106871479B (en) | 2017-04-14 | 2017-04-14 | Cold volume recovery type variable-capacity air source heat pump system |
| PCT/CN2017/102002 WO2018188269A1 (en) | 2017-04-14 | 2017-09-18 | Cold energy recovery-type variable-capacity air-source heat pump system |
| US16/604,943 US11137178B2 (en) | 2017-04-14 | 2017-09-18 | Cold energy recovery-type variable-capacity air-source heat pump system |
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| CN201710245733.5A CN106871479B (en) | 2017-04-14 | 2017-04-14 | Cold volume recovery type variable-capacity air source heat pump system |
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| WO2018188269A1 (en) * | 2017-04-14 | 2018-10-18 | 江苏天舒电器股份有限公司 | Cold energy recovery-type variable-capacity air-source heat pump system |
| CN109357434A (en) * | 2018-11-29 | 2019-02-19 | 四川长虹空调有限公司 | It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) |
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| CN114026373A (en) * | 2019-07-03 | 2022-02-08 | 三菱电机株式会社 | Refrigeration circuit device |
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