CN109751786A - Cold-warm type heat recovery system and single cold type heat recovery system and its control method - Google Patents
Cold-warm type heat recovery system and single cold type heat recovery system and its control method Download PDFInfo
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- CN109751786A CN109751786A CN201910049790.5A CN201910049790A CN109751786A CN 109751786 A CN109751786 A CN 109751786A CN 201910049790 A CN201910049790 A CN 201910049790A CN 109751786 A CN109751786 A CN 109751786A
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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]
- Y02B30/56—Heat recovery units
Abstract
The present invention provides a kind of cold-warm type heat recovery system and single cold type heat recovery system and its control method, cold-warm type heat recovery system includes heat recovering heat exchanger, first PWM flow control valve and the 2nd PWM flow control valve, one connecting pin of indoor heat exchanger is connected by the port E of pipeline and four-way valve, the port S of four-way valve is connect by pipeline with the input terminal of compressor mould group, the output end of compressor mould group is connected by the port D of pipeline and four-way valve, the C port of four-way valve is connect with the first PWM flow control valve and the 2nd PWM flow control valve respectively by pipeline, first PWM flow control valve is connected by the input terminal of pipeline and heat recovering heat exchanger, the pipeline at output of heat recovering heat exchanger merges the one end for being connected to outdoor heat exchanger with the pipeline of the 2nd PWM flow control valve, outdoor heat exchange The other end of device is connect by pipeline with indoor heat exchanger.Two kinds of heat recovery systems have the advantages that energy conservation and environmental protection and use cost are lower.
Description
Technical field
The present invention relates to air-conditioning equipment, in particular to a kind of cold-warm type heat recovery system and single cold type heat recovery system and its
Control method.
Background technique
Conventional wind cabinet system generally includes wind inlet section, fillter section, evaporative cooling section, maintenance section, electric heater section, steam humidification
Section and blower wind outlet section.Wind inlet section effect is connection air inlet air hose；Fillter section effect is installation filter, and guarantee was passed through
The air purity of filter；The effect of evaporative cooling section is that the evaporator of refrigeration system cools down to the air of process, dehumidifies；Electricity adds
Hot arc effect is heated to air；The effect of steam humidification section is humidified to air；The effect of blower wind outlet section is connection
Air supply duct；The air-supply of wind cabinet can guarantee constant temperature and humidity.But conventional wind cabinet system has the drawback that: air is by steaming
It after sending out temperature descending section, to heat up by electric heater section, use very big, the higher operating costs of electric heating energy consumption.
Summary of the invention
In view of the above, the present invention provides a kind of cold-warm type heat recovery system and single cold type heat recovery system, the changes in temperature
Type heat recovery system and single cold type heat recovery system have the advantages that energy conservation and environmental protection and use cost are lower.
Technical solution of the present invention:
A kind of cold-warm type heat recovery system, including indoor heat exchanger, four-way valve, compressor mould group, heat recovering heat exchanger,
First PWM flow control valve, the 2nd PWM flow control valve, outdoor heat exchanger and several pipelines, there are four ends for four-way valve tool
Mouthful, respectively the port E, the port D, C port and the port S, a connecting pin of indoor heat exchanger pass through the end E of pipeline and four-way valve
The port S of mouth connection, four-way valve is connect by pipeline with the input terminal of compressor mould group, and the output end of compressor mould group passes through pipe
The C port of the connection of the port D of road and four-way valve, four-way valve is flowed with the first PWM flow control valve and the 2nd PWM respectively by pipeline
Control valve connection, the first PWM flow control valve are connected by the input terminal of pipeline and heat recovering heat exchanger, heat recovering heat exchanger
Pipeline at output merge the one end for being connected to outdoor heat exchanger, outdoor heat exchange with the pipeline of the 2nd PWM flow control valve
The other end of device is connected by another connecting pin of pipeline and indoor heat exchanger.
Further, gas-liquid separator is provided on the pipeline that the port S of the four-way valve is connected with compressor mould group.
Further, be disposed on the pipeline that the gas-liquid separator is connected with compressor mould group low tension switch and
Suction temperature monitoring device.
Further, the compressor mould group includes digital compressor, invariable frequency compressor and oil eliminator, digital compressor
Input terminal pipeline and digital compressor regulation room between PWM regulating valve, the output of digital compressor is connected with by pipeline
The output end of end and invariable frequency compressor is connected in parallel to the input terminal of oil eliminator by pipeline, and the output end of oil eliminator passes through pipeline
It is connect with the port D of four-way valve.
Further, check valve is connected on the pipeline at output of the digital compressor.
Further, the digital compressor passes through pipeline with invariable frequency compressor respectively and connect with oil eliminator.
Further, the pipeline between the outdoor heat exchanger and indoor heat exchanger is disposed with liquid storage device, does
Dry filter and expansion valve.
The present invention also provides the control methods of the cold-warm type heat recovery system described in one kind:
When refrigeration, four-way valve no power, four-way valve is in the port E and is connected to the port S, the shape that the port D is connected to C port
State, refrigerant are arranged by the port D of four-way valve by C port by the gas that the compression of compressor mould group is changed into high temperature and pressure
Out, after passing through the first PWM flow control valve and heat recovering heat exchanger and the 2nd PWM flow control valve respectively, into outdoor
Outdoor heat exchanger, becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, after expanded valve, becomes the liquid of low-temp low-pressure
Body becomes the gas of low-temp low-pressure, by the port E of four-way valve, by the end S after indoor heat exchanger heat absorption lets cool effect
Mouth returns to compressor mould group, forms refrigeration cycle；
When heating, four-way valve is powered, and the port D of four-way valve is connected to the port E, and C port is connected to the port S, and refrigerant is logical
The gas that the compression of overcompression machine mould group is changed into high temperature and pressure is discharged by the port E by the port D of four-way valve, enters the room heat
Exchanger becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, becomes the liquid of low-temp low-pressure after expanded valve, passes through
After outdoor heat exchanger heat absorption lets cool effect, become the gas of low-temp low-pressure, after the 2nd PWM flow control valve, then through four
The C port of port valve returns to compressor mould group by the port S, forms heating circulation.
Cold-warm type heat recovery system of the present invention is separated into two pipelines by the pipeline for connecting the C port of four-way valve, and
The first PWM flow control valve and the 2nd PWM flow control valve, the first PWM flow control valve is respectively set on this two articles of pipelines
It is connected again by pipeline with outdoor heat exchanger after being connect with heat recovering heat exchanger, the first PWM flow control valve and the 2nd PWM stream
Control valve is in parallel, is cooperated by the first PWM flow control valve and the 2nd PWM flow control valve, and adjustment is exchanged heat by recuperation of heat
The refrigeration dose of device come control heat recovering heat exchanger to by air heating amount, make full use of recycling to be discharged to the heat pair of atmosphere
The air of process is heated, and electric heating is not necessarily to, and energy-saving effect is very significant, effectively instead of existing Electric heating, is reduced
Energy consumption and use cost.
The present invention also provides a kind of single cold type heat recovery system, including indoor heat exchanger, compressor mould group, recuperation of heat change
It is hot device, the first PWM flow control valve, the 2nd PWM flow control valve, outdoor heat exchanger, several pipelines, liquid storage device, dried
One connecting pin of filter and expansion valve, indoor heat exchanger is connect by pipeline with the input terminal of compressor mould group, compressor mould
The output end of group is connect with the first PWM flow control valve and the 2nd PWM flow control valve respectively by pipeline, the first PWM flow
Control valve is connected by the input terminal of pipeline and heat recovering heat exchanger, and the pipeline at output of heat recovering heat exchanger and the 2nd PWM flow
The pipeline of control valve merges the one end for being connected to outdoor heat exchanger, and the other end of outdoor heat exchanger is successively connected by pipeline
It is connect again with another connecting pin of indoor heat exchanger after connecing liquid storage device, device for drying and filtering and expansion valve.
The present invention also provides the control methods of the single cold type heat recovery system described in one kind:
When refrigeration, after refrigerant is changed into the gas of high temperature and pressure by the compression of compressor mould group, two-way is divided to enter first
PWM flow control valve and the 2nd PWM flow control valve open the first PWM flow control valve when needing to heat air, high
The gas of warm high pressure enters heat recovering heat exchanger and heats to air, if you need to reduce the heating amount to air, opens the 2nd PWM
Flow control valve shunts the gas of a part of high temperature and pressure, and/or the first PWM flow control valve is turned down, changes by recuperation of heat
The refrigerant of hot device and the 2nd PWM flow control valve is followed by outdoor heat exchanger, liquid storage device, device for drying and filtering, expansion valve
And after indoor heat exchanger, the input terminal of compressor mould group is finally flow back into, forms refrigeration cycle.
Cooperated by the first PWM flow control valve and the 2nd PWM flow control valve, the system that adjustment passes through heat recovering heat exchanger
Cryogen amount come control heat recovering heat exchanger to by air heating amount, make full use of recycling to be discharged to the heat of atmosphere to process
Air is heated, and is not necessarily to electric heating, energy-saving effect is very significant, effectively instead of existing Electric heating, reduces energy consumption
And use cost.
Detailed description of the invention
Fig. 1 is the pipe connecting structure schematic diagram of cold-warm type heat recovery system first embodiment of the present invention；
Fig. 2 is the pipe connecting structure schematic diagram of cold-warm type heat recovery system second embodiment of the present invention；
Fig. 3 is the pipe connecting structure schematic diagram of cold-warm type heat recovery system 3rd embodiment of the present invention；
Fig. 4 is the pipe connecting structure schematic diagram of single cold type heat recovery system first embodiment of the present invention；
Fig. 5 is the pipe connecting structure schematic diagram of single cold type heat recovery system second embodiment of the present invention；
Fig. 6 is the pipe connecting structure schematic diagram of single cold type heat recovery system 3rd embodiment of the present invention.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention guarantor
Protect range.
Cold-warm type heat recovery system embodiment one
Referring to Fig. 1, the present invention provides a kind of cold-warm type heat recovery system, including indoor heat exchanger 1, four-way valve 2, pressure
Contracting machine mould group 3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7 with
And several pipelines 8, there are four port, the respectively port E, the port D, C port and the port S, indoor heat exchangers 1 for the tool of four-way valve 2
A connecting pin connect with the port E of four-way valve 2 by pipeline 8, the port S of four-way valve 2 passes through pipeline 8 and compressor mould group 3
Input terminal connection, the output end of compressor mould group 3 connect by pipeline 8 with the port D of four-way valve 2, the C port of four-way valve 2
It is connect respectively with the first PWM flow control valve 5 and the 2nd PWM flow control valve 6 by pipeline 8, the first PWM flow control valve 5
It is connect by pipeline 8 with the input terminal of heat recovering heat exchanger 4, the pipeline at output 8 and the 2nd PWM flow of heat recovering heat exchanger 4
The pipeline 8 of control valve 6 merges the one end for being connected to outdoor heat exchanger 7, the other end of outdoor heat exchanger 7 by pipeline 8 with
Another connecting pin of indoor heat exchanger 1 connects.
Gas-liquid separator 9, gas-liquid separation are provided on the pipeline 8 that the port S of four-way valve 2 is connected with compressor mould group 3
Device 9 is used to separate back the gas and liquid of compressor refrigerant, prevents refrigerant liquid from entering compressor, compressor is caused to generate
Liquid hammer damages compressor.
Low tension switch 10 and suction temperature are disposed on the pipeline 8 that gas-liquid separator 9 is connected with compressor mould group 3
Monitoring device 11, when refrigeration system low-pressure lateral pressure is lower than protection pressure (being exactly the opening pressure of low tension switch design), low pressure
Switch disconnects, and sends a signal to controller, system protection is shut down, and provides alarm signal simultaneously；Suction temperature monitoring device 11
For measuring the temperature (namely suction temperature) of compressor air suction, this temperature be it is whether normal for monitoring system operation,
In the system to be throttled with electric expansion valve, suction temperature is also used for the suction superheat of measurement refrigerant, by suction superheat
Control the aperture of electric expansion valve.
In the present embodiment, compressor mould group 3 includes digital compressor 31, invariable frequency compressor 32 and oil eliminator 33, number
PWM regulating valve 34 is connected with by pipeline 8 between the input terminal pipeline 8 of compressor 31 and the regulation room of digital compressor 31, is used
To adjust the ability of digital compressor 31；The output end of digital compressor 31 and the output end of invariable frequency compressor 32 pass through pipeline 8
It is connected in parallel to the input terminal of oil eliminator 33, the output end of oil eliminator 33 is connect by pipeline 8 with the port D of four-way valve 2.
It is connected with check valve 37 on the pipeline at output 8 of digital compressor 31, so that digital compressor is when adjusting unloading
Prevent the high pressure gas of exhaust side from flowing back to 31 exhaust outlet of digital compressor.
Height is provided on the pipeline 8 that the output end of digital compressor 31 and invariable frequency compressor 32 is connected with oil eliminator 33
Compress switch 35 and delivery temperature monitoring device 36, (is exactly that high-voltage switch gear is set when refrigeration system high pressure lateral pressure is higher than protection pressure
The opening pressure of meter), high-voltage switch gear disconnects, and sends a signal to controller, system protection is shut down, and provides alarm signal simultaneously；
The temperature that delivery temperature monitoring device 36 is used to measure digital compressor 31 and invariable frequency compressor 32 is vented, prevents delivery temperature mistake
High (being to prevent the excessively high damage of compressor motor internal temperature in fact), can send a signal to controller, system protection stops when excessively high
Machine, and alarm signal is provided simultaneously.
Digital compressor 31 is connect by pipeline 8 with oil eliminator 33 respectively with invariable frequency compressor 32, will be with refrigeration
The compressor and freeze oily (i.e. compressor lubricant oil) of agent discharge is separated, and sends digital compressor 31 and invariable frequency compressor back to again
32, prevent compressor oil starvation from damaging.
According to actual use demand, compressor mould group 3 can be 31 or more digital compressors 31 of a digital compressor
A used in parallel or digital compressor 31 and more invariable frequency compressors 32 are used in parallel, or only with more invariable frequency compressors 32
Used in parallel or variable conpacitance compressor and invariable frequency compressor 32 are used in parallel.
Pipeline 8 between outdoor heat exchanger 7 and indoor heat exchanger 1 is disposed with liquid storage device 12, device for drying and filtering
13 and expansion valve 14, liquid storage device 12 is for storing remaining a small amount of refrigerant liquids in pipeline 8, and device for drying and filtering 13 is for removing
Moisture in refrigerant gas stream, expansion valve 14 make the refrigerant liquid of medium temperature high pressure pass through its wet steaming of the throttling as low-temp low-pressure
Vapour, then refrigerant absorbs heat in heat exchanger 1 indoors and reaches refrigeration effect, and expansion valve 14 passes through indoor heat exchanger 1
The degree of superheat variation of end carrys out control valve flow, prevents evaporator area underutilization and engine knock phenomenon.Expansion valve 14
Heating power expansion valve or electric expansion valve can be used.
Finned heat exchanger or micro- logical can be used in indoor heat exchanger 1, heat recovering heat exchanger 4 and outdoor heat exchanger 7
Road heat exchanger.Outdoor heat exchanger 7 can also use water cooling heat exchanger.
When refrigeration, refrigerant as shown in Figure 1 dotted arrow direction flowing, formed refrigeration cycle.
When need to freeze, 2 no power of four-way valve, four-way valve 2 is in the port E and is connected to the port S, what the port D was connected to C port
State, refrigerant compresses the gas for being changed into high temperature and pressure by compressor mould group 3, by the port D of four-way valve 2, by C port
Discharge passes through the first PWM flow control valve 5 and heat recovering heat exchanger 4 (condenser) and the 2nd PWM flow control valve 6 respectively
Afterwards, into outdoor outdoor heat exchanger 7 (condenser), become the liquid of medium temperature high pressure after condenser inhales cold heat release, through swollen
After swollen valve 14, become the liquid of low-temp low-pressure, after indoor heat exchanger 1 (evaporator) heat absorption lets cool effect, becomes low temperature
The gas of low pressure returns to compressor mould group 3 by the port S, is thusly-formed refrigeration cycle by the port E of four-way valve 2.
When heating, refrigerant as shown in Figure 1 solid arrow direction flowing, formed heating circulation.
When need to heat, four-way valve 2 is powered, and the port D of four-way valve 2 is connected to the port E, and C port is connected to the port S, refrigeration
Agent is discharged by the port D of four-way valve 2 by the port E by the gas that the compression of compressor mould group 3 is changed into high temperature and pressure, is entered
Indoor heat exchanger 1 (condenser) becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, becomes low after expanded valve 14
The liquid of warm low pressure becomes the gas of low-temp low-pressure after outdoor heat exchanger 7 (evaporator) heat absorption lets cool effect, passes through
After 2nd PWM flow control valve 6, then the C port through four-way valve 2, compressor mould group 3 is returned to by the port S, heating is thusly-formed and follows
Ring.
When work, wind enters from indoor heat exchanger 1 to 4 direction of heat recovering heat exchanger, as shown in figure 1 wind direction arrow direction.
Cold-warm type heat recovery system of the present invention is separated into two pipelines 8 by the pipeline 8 for connecting the C port of four-way valve 2,
And the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, the first PWM flow control are respectively set on this two articles of pipelines 8
Valve 5 processed is connected with outdoor heat exchanger 7 by pipeline 8 again after connecting with heat recovering heat exchanger 4, the first PWM flow control valve 5 and
2nd PWM flow control valve 6 is in parallel, is cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, and adjustment is logical
The refrigeration dose of heat recovering heat exchanger 4 is crossed to control 4 pairs of the heat recovering heat exchanger heating amounts by air, recycling is made full use of to arrange
Heat to atmosphere heats the air of process, is not necessarily to electric heating, energy-saving effect is very significant, effectively instead of existing electricity
Heating method reduces energy consumption and use cost.
Cold-warm type heat recovery system embodiment two
Referring to Fig. 2, the present invention provides a kind of cold-warm type heat recovery system, including indoor heat exchanger 1, four-way valve 2, pressure
Contracting machine mould group 3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7 with
And several pipelines 8, there are four port, the respectively port E, the port D, C port and the port S, indoor heat exchangers 1 for the tool of four-way valve 2
A connecting pin connect with the port E of four-way valve 2 by pipeline 8, the port S of four-way valve 2 passes through pipeline 8 and compressor mould group 3
Input terminal connection, the output end of compressor mould group 3 connect by pipeline 8 with the port D of four-way valve 2, the C port of four-way valve 2
The pipeline 8 of connection is divided into two-way, is disposed with the first PWM flow control valve 5, heat recovering heat exchanger 4 and on pipeline 8 all the way
One non-return valve 41 is disposed with the 2nd PWM flow control valve 6, outdoor heat exchanger 7, the second non-return valve on another way pipeline 8
71 and the first device for drying and filtering 72 and the first expansion valve 73 that are arranged in parallel with the second non-return valve 71, the second non-return valve 71 connect
The pipeline 8 picked out and the pipeline 8 that the first non-return valve 41 is connect out are connected in parallel to liquid storage device 74, and liquid storage device 74 passes through the connection of pipeline 8 the
It is then connected to indoor heat exchanger 1 after three non-return valves 75,76 He of the second device for drying and filtering has been arranged in parallel on third non-return valve 75
Second expansion valve 77.
Rest part structure is identical as cold-warm type heat recovery system embodiment one in the present embodiment, and details are not described herein.
When refrigeration, refrigerant as shown in Figure 2 dotted arrow direction flowing, formed refrigeration cycle.
When need to freeze, 2 no power of four-way valve, four-way valve 2 is in the port E and is connected to the port S, what the port D was connected to C port
State, refrigerant compresses the gas for being changed into high temperature and pressure by compressor mould group 3, by the port D of four-way valve 2, by C port
Divide two-way discharge, is expelled to liquid storage device through the first PWM flow control valve 5, heat recovering heat exchanger 4 and the first non-return valve 41 all the way
74, another way is expelled to liquid storage device through the 2nd PWM flow control valve 6, outdoor heat exchanger 7 (condenser) and the second non-return valve 71
74, then (evaporated from liquid storage device 74 via indoor heat exchanger 1 is expelled to after the second device for drying and filtering 76 and the second expansion valve 77
Device), after indoor heat exchanger 1 (evaporator) heat absorption lets cool effect, become the gas of low-temp low-pressure, by the E of four-way valve 2
Port returns to compressor mould group 3 by the port S, is thusly-formed refrigeration cycle.
When heating, refrigerant as shown in Figure 2 solid arrow direction flowing, formed heating circulation.
When heating, four-way valve 2 is powered, and the port D of four-way valve 2 is connected to the port E, and C port is connected to the port S, refrigerant
It is discharged by the port D of four-way valve 2 by the port E by the gas that the compression of compressor mould group 3 is changed into high temperature and pressure, into room
Inside heat exchanger 1 (condenser) becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, successively through third non-return valve 75,
Liquid storage device 74, the first device for drying and filtering 72, the first expansion valve 73, outdoor heat exchanger 7, the 2nd PWM flow control valve 6, C port
And behind the end S, compressor mould group 3 is returned to, is thusly-formed heating circulation.
When refrigeration, refrigerant as shown in Figure 2 dotted arrow direction flowing, formed refrigeration cycle.
When refrigeration, cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, adjustment passes through recuperation of heat
The refrigeration dose of heat exchanger 4 controls 4 pairs of the heat recovering heat exchanger heating amounts by air, and recycling is made full use of to be discharged to atmosphere
Heat heats the air of process, is not necessarily to electric heating, energy-saving effect is very significant, effectively instead of existing electric heating side
Formula reduces energy consumption and use cost.
Cold-warm type heat recovery system embodiment three
Referring to Fig. 3, the present invention provides a kind of cold-warm type heat recovery system, including indoor heat exchanger 1, four-way valve 2, pressure
Contracting machine mould group 3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7,
Several pipelines 8, liquid storage device 12, device for drying and filtering 13 and expansion valve 14, there are four ports, the respectively port E, the end D for the tool of four-way valve 2
One connecting pin of mouth, C port and the port S, indoor heat exchanger 1 is connect by pipeline 8 with the port E of four-way valve 2, four-way valve 2
The port S connect with the input terminal of compressor mould group 3 by pipeline 8, the output end of compressor mould group 3 passes through pipeline 8 and four-way
The port D of valve 2 connects, and the C port of four-way valve 2 is sequentially connected outdoor heat exchanger 7, the 2nd PWM flow control valve by pipeline 8
6, another connecting pin of liquid storage device 12, device for drying and filtering 13, expansion valve 14 and outdoor heat exchanger 7.
Rest part structure is identical as cold-warm type heat recovery system embodiment one in the present embodiment, and details are not described herein.
When refrigeration, refrigerant as shown in Figure 3 dotted arrow direction flowing, formed refrigeration cycle.
When need to freeze, 2 no power of four-way valve, four-way valve 2 is in the port E and is connected to the port S, what the port D was connected to C port
State, refrigerant compresses the gas for being changed into high temperature and pressure by compressor mould group 3, by the port D of four-way valve 2, by C port
After flowing through outdoor heat exchanger 7, two-way is divided to flow to the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, according to sky
The heating amount of gas adjusts the uninterrupted of the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, flows through the 2nd PWM stream
Refrigerant after control valve 6 and flow through the first PWM flow control valve 5 and the refrigerant of heat recovering heat exchanger 4 successively stores up
Liquid device 12, device for drying and filtering 13, expansion valve 14 and outdoor heat exchanger 7 finally return to pressure from the port E of four-way valve 2 and the port S
Contracting machine mould group 3, is thusly-formed refrigeration cycle.
When heating, refrigerant as shown in Figure 3 solid arrow direction flowing, formed heating circulation.
When need to heat, four-way valve 2 is powered, and the port D of four-way valve 2 is connected to the port E, and C port is connected to the port S, refrigeration
Agent is discharged by the port D of four-way valve 2 by the port E by the gas that the compression of compressor mould group 3 is changed into high temperature and pressure, is entered
Indoor heat exchanger 1 (condenser) becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, successively expanded valve 14, dry
Behind dry filter 13, liquid storage device 12, the 2nd PWM flow control valve 6, the C port of outdoor heat exchanger 7 and four-way valve 2 and the end S,
Compressor mould group 3 is returned to, heating circulation is thusly-formed.
When refrigeration, cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, adjustment passes through recuperation of heat
The refrigeration dose of heat exchanger 4 controls 4 pairs of the heat recovering heat exchanger heating amounts by air, and recycling is made full use of to be discharged to atmosphere
Heat heats the air of process, is not necessarily to electric heating, energy-saving effect is very significant, effectively instead of existing electric heating side
Formula reduces energy consumption and use cost.
Single cold type heat recovery system embodiment one
Referring to Fig. 4, the present invention provides a kind of single cold type heat recovery system, including indoor heat exchanger 1, compressor mould group
3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7, several pipelines
8, a connecting pin of liquid storage device 74, device for drying and filtering 76 and expansion valve 77, indoor heat exchanger 1 passes through pipeline 8 and compressor mould
The input terminal connection of group 3, the output end of compressor mould group 3 by pipeline 8 respectively with the first PWM flow control valve 5 and the 2nd PWM
Flow control valve 6 connects, and the first PWM flow control valve 5 is connect by pipeline 8 with the input terminal of heat recovering heat exchanger 4, recuperation of heat
The pipeline at output 8 of heat exchanger 4 merges the one end for being connected to outdoor heat exchanger 7 with the pipeline 8 of the 2nd PWM flow control valve 6,
The other end of outdoor heat exchanger 7 by pipeline 8 be sequentially connected after liquid storage device 74, device for drying and filtering 76 and expansion valve 77 again with room
Another connecting pin of inside heat exchanger 1 connects.
Rest part structure is identical as cold-warm type heat recovery system embodiment one in the present embodiment, and details are not described herein.
When refrigeration, refrigerant as shown in Figure 3 dotted arrow direction flowing, formed refrigeration cycle.Refrigerant passes through compression
After the compression of machine mould group 3 is changed into the gas of high temperature and pressure, two-way is divided to enter the first PWM flow control valve 5 and the 2nd PWM flow control
Valve 6 processed opens the first PWM flow control valve 5 when needing to heat air, and the gas of high temperature and pressure enters recuperation of heat heat exchange
Device 4 heats air, if you need to reduce the heating amount to air, opens the 2nd PWM flow control valve 6 and shunts a part of high temperature
The gas of high pressure, and/or the first PWM flow control valve 5 is turned down, by heat recovering heat exchanger 4 and the 2nd PWM flow control valve
6 refrigerant is followed by outdoor heat exchanger 7, liquid storage device 74, device for drying and filtering 76, expansion valve 77 and indoor heat exchanger 1
Afterwards, the input terminal of compressor mould group 3 is finally flow back into, refrigeration cycle is formed.
Cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, adjustment passes through heat recovering heat exchanger 4
Refrigeration dose control 4 pairs of the heat recovering heat exchanger heating amounts by air, make full use of recycling to be discharged to the heat pair of atmosphere
The air of process is heated, and electric heating is not necessarily to, and energy-saving effect is very significant, effectively instead of existing Electric heating, is reduced
Energy consumption and use cost.
Single cold type heat recovery system embodiment two
Referring to Fig. 5, the present invention provides a kind of single cold type heat recovery system, including indoor heat exchanger 1, compressor mould group
If 3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7 and main pipe
Road 8, a connecting pin of indoor heat exchanger 1 are connect by pipeline 8 with the input terminal of compressor mould group 3, compressor mould group 3 it is defeated
The pipeline 8 of outlet connection is divided into two-way, is disposed with the first PWM flow control valve 5, heat recovering heat exchanger 4 on pipeline 8 all the way
And non-return valve 41, the 2nd PWM flow control valve 6 and outdoor heat exchanger 7 are disposed on another way pipeline 8, outdoor heat is handed over
The pipeline 8 that the pipeline 8 that parallel operation 7 connects out is connect out with non-return valve 41 is connected in parallel to liquid storage device 74, and liquid storage device 74 passes through pipeline 8 successively
Indoor heat exchanger 1 is then connected to after connection device for drying and filtering 76 and expansion valve 77.
Rest part structure is identical as cold-warm type heat recovery system embodiment one in the present embodiment, and details are not described herein.
When refrigeration, refrigerant as shown in Figure 4 dotted arrow direction flowing, formed refrigeration cycle.
After refrigerant is changed into the gas of high temperature and pressure by the compression of compressor mould group 3, two-way is divided to enter the first PWM flow
Control valve 5 and the 2nd PWM flow control valve 6 open the first PWM flow control valve 5 when needing to heat air, and high temperature is high
The gas of pressure enters heat recovering heat exchanger 4 and heats to air, if you need to reduce the heating amount to air, opens the 2nd PWM stream
Control valve 6 shunts the gas of a part of high temperature and pressure, and/or the first PWM flow control valve 5 is turned down, flows by the first PWM
The refrigerant of control valve 5, heat recovering heat exchanger 4 and non-return valve 41, and by the 2nd PWM flow control valve 6 and outdoor heat
The refrigerant of exchanger 7, followed by liquid storage device 74, device for drying and filtering 76, expansion valve 77 and indoor heat exchanger 1 after, most
The input terminal of compressor mould group 3 is flow back into eventually, forms refrigeration cycle.
Cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, adjustment passes through heat recovering heat exchanger 4
Refrigeration dose control 4 pairs of the heat recovering heat exchanger heating amounts by air, make full use of recycling to be discharged to the heat pair of atmosphere
The air of process is heated, and electric heating is not necessarily to, and energy-saving effect is very significant, effectively instead of existing Electric heating, is reduced
Energy consumption and use cost.
Single cold type heat recovery system embodiment three
Referring to Fig. 6, the present invention provides a kind of single cold type heat recovery system, including indoor heat exchanger 1, compressor mould group
3, heat recovering heat exchanger 4, the first PWM flow control valve 5, the 2nd PWM flow control valve 6, outdoor heat exchanger 7, several pipelines
8, a connecting pin of liquid storage device 74, device for drying and filtering 76 and expansion valve 77, indoor heat exchanger 1 passes through pipeline 8 and compressor mould
The input terminal connection of group 3, the output end of compressor mould group 3 are sequentially connected outdoor heat exchanger 7, the 2nd PWM flow by pipeline 8
After control valve 6, liquid storage device 74, device for drying and filtering 76 and expansion valve 77, it is ultimately connected to another connection of indoor heat exchanger 1
End, the first PWM flow control valve 5 and heat recovering heat exchanger 4 are sequentially connected in series, the pipeline 8 of 5 input terminal of the first PWM flow control valve
It is connected between the 2nd PWM flow control valve 6 and outdoor heat exchanger 7, the pipeline 8 of 4 output end of heat recovering heat exchanger is connected to
Between 2nd PWM flow control valve 6 and liquid storage device 74.
Rest part structure is identical as cold-warm type heat recovery system embodiment one in the present embodiment, and details are not described herein.
When refrigeration, refrigerant as shown in Figure 4 dotted arrow direction flowing, formed refrigeration cycle.
After refrigerant is changed into the gas of high temperature and pressure by the compression of compressor mould group 3, outdoor heat exchanger 7 is first passed through,
Then divide two-way to enter the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, when needing to heat air, open
First PWM flow control valve 5, the gas of high temperature and pressure enters heat recovering heat exchanger 4 and heats to air, if you need to reduce to sky
The heating amount of gas opens the 2nd PWM flow control valve 6 and shunts the gas of a part of high temperature and pressure, and/or by the first PWM flow
Control valve 5 is turned down, by the refrigerant of the first PWM flow control valve 5 and heat recovering heat exchanger 4, and passes through the 2nd PWM flow
The refrigerant of control valve 6, followed by liquid storage device 74, device for drying and filtering 76, expansion valve 77 and indoor heat exchanger 1 after, most
The input terminal of compressor mould group 3 is flow back into eventually, forms refrigeration cycle.
Cooperated by the first PWM flow control valve 5 and the 2nd PWM flow control valve 6, adjustment passes through heat recovering heat exchanger 4
Refrigeration dose control 4 pairs of the heat recovering heat exchanger heating amounts by air, make full use of recycling to be discharged to the heat pair of atmosphere
The air of process is heated, and electric heating is not necessarily to, and energy-saving effect is very significant, effectively instead of existing Electric heating, is reduced
Energy consumption and use cost.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of cold-warm type heat recovery system, which is characterized in that including indoor heat exchanger (1), four-way valve (2), compressor mould
Group (3), heat recovering heat exchanger (4), the first PWM flow control valve (5), the 2nd PWM flow control valve (6), outdoor heat exchanger
(7) and several pipelines (8), there are four ports, the respectively port E, the port D, C port and the port S for four-way valve (2) tool, indoor
One connecting pin of heat exchanger (1) is connect by pipeline (8) with the port E of four-way valve (2), and the port S of four-way valve (2) passes through pipe
Road (8) is connect with the input terminal of compressor mould group (3), and the output end of compressor mould group (3) passes through pipeline (8) and four-way valve (2)
The connection of the port D, the C port of four-way valve (2) flowed with the first PWM flow control valve (5) and the 2nd PWM respectively by pipeline (8)
Control valve (6) connection, the first PWM flow control valve (5) are connect by pipeline (8) with the input terminal of heat recovering heat exchanger (4),
The pipeline at output (8) of heat recovering heat exchanger (4) merges with the pipeline (8) of the 2nd PWM flow control valve (6) is connected to outdoor heat
One end of exchanger (7), the other end of outdoor heat exchanger (7) pass through another connection of pipeline (8) and indoor heat exchanger (1)
End connection.
2. cold-warm type heat recovery system according to claim 1, which is characterized in that the port S of the four-way valve (2) and pressure
Gas-liquid separator (9) are provided on the pipeline (8) that contracting machine mould group (3) is connected.
3. cold-warm type heat recovery system according to claim 1, which is characterized in that the gas-liquid separator (9) and compression
Low tension switch (10) and suction temperature monitoring device (11) are disposed on the pipeline (8) that machine mould group (3) is connected.
4. cold-warm type heat recovery system according to claim 1, which is characterized in that the compressor mould group (3) includes number
Code compressor (31), invariable frequency compressor (32) and oil eliminator (33), the input terminal pipeline (8) and number of digital compressor (31)
Be connected with PWM regulating valve (34) between the regulation room of compressor (31) by pipeline (8), the output end of digital compressor (31) with
The output end of invariable frequency compressor (32) is connected in parallel to the input terminals of oil eliminator (33) by pipeline (8), oil eliminator (33) it is defeated
Outlet is connect by pipeline (8) with the port D of four-way valve (2).
5. cold-warm type heat recovery system according to claim 4, which is characterized in that the output of the digital compressor (31)
Check valve (37) are connected on end pipe road (8).
6. cold-warm type heat recovery system according to claim 4, which is characterized in that the digital compressor (31) and fixed frequency
Compressor (32) is connect by pipeline (8) with oil eliminator (33) respectively.
7. cold-warm type heat recovery system according to claim 1, which is characterized in that the outdoor heat exchanger (7) and room
Pipeline (8) between inside heat exchanger (1) is disposed with liquid storage device (12), device for drying and filtering (13) and expansion valve (14).
8. the control method of cold-warm type heat recovery system according to claim 7, which is characterized in that
When refrigeration, four-way valve (2) no power, four-way valve (2) is in the port E and is connected to the port S, the shape that the port D is connected to C port
State, refrigerant is changed into the gas of high temperature and pressure by compressor mould group (3) compression, by the port D of four-way valve (2), by C-terminal
Mouth discharge, passes through the first PWM flow control valve (5) and heat recovering heat exchanger (4) and the 2nd PWM flow control valve (6) respectively
Afterwards, into outdoor outdoor heat exchanger (7), become the liquid of medium temperature high pressure, expanded valve after condenser inhales cold heat release
(14) after, become the liquid of low-temp low-pressure, after indoor heat exchanger (1) heat absorption lets cool effect, become the gas of low-temp low-pressure
Body returns to compressor mould group (3) by the port S, forms refrigeration cycle by the port E of four-way valve (2)；
When heating, four-way valve (2) is powered, and the port D of four-way valve (2) is connected to the port E, and C port is connected to the port S, refrigerant
It is discharged by the port D of four-way valve (2) by the port E by the gas that compressor mould group (3) compression is changed into high temperature and pressure, into
Enter indoor heat exchanger (1), becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, become low temperature after expanded valve (14)
The liquid of low pressure becomes the gas of low-temp low-pressure after outdoor heat exchanger (7) heat absorption lets cool effect, flows by the 2nd PWM
After control valve (6), then the C port through four-way valve (2), compressor mould group (3) is returned to by the port S, forms heating circulation.
9. a kind of single cold type heat recovery system, which is characterized in that returned including indoor heat exchanger (1), compressor mould group (3), heat
Receive heat exchanger (4), the first PWM flow control valve (5), the 2nd PWM flow control valve (6), outdoor heat exchanger (7) if, main pipe
Road (8), liquid storage device (74), device for drying and filtering (76) and expansion valve (77), a connecting pin of indoor heat exchanger (1) pass through pipeline
(8) connect with the input terminal of compressor mould group (3), the output end of compressor mould group (3) by pipeline (8) respectively with the first PWM
Flow control valve (5) and the connection of the 2nd PWM flow control valve (6), the first PWM flow control valve (5) are returned by pipeline (8) and heat
Receive the input terminal connection of heat exchanger (4), the pipeline at output (8) and the 2nd PWM flow control valve (6) of heat recovering heat exchanger (4)
Pipeline (8) merge and be connected to one end of outdoor heat exchanger (7), the other end of outdoor heat exchanger (7) by pipeline (8) according to
Another connecting pin with indoor heat exchanger (1) again after secondary connection liquid storage device (74), device for drying and filtering (76) and expansion valve (77)
Connection.
10. the control method of single cold type heat recovery system according to claim 9, which is characterized in that
When refrigeration, after refrigerant is changed into the gas of high temperature and pressure by compressor mould group (3) compression, two-way is divided to enter first
PWM flow control valve (5) and the 2nd PWM flow control valve (6) open the first PWM flow control when needing to heat air
Valve (5), the gas of high temperature and pressure enters heat recovering heat exchanger (4) and heats to air, if you need to reduce the heating amount to air,
Open the gas that the 2nd PWM flow control valve (6) shunts a part of high temperature and pressure, and/or by the first PWM flow control valve (5)
It turns down, by the refrigerant of heat recovering heat exchanger (4) and the 2nd PWM flow control valve (6) followed by outdoor heat exchanger
(7), after liquid storage device (74), device for drying and filtering (76), expansion valve (77) and indoor heat exchanger (1), compressor is finally flow back into
The input terminal of mould group (3) forms refrigeration cycle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049790.5A CN109751786A (en) | 2019-01-18 | 2019-01-18 | Cold-warm type heat recovery system and single cold type heat recovery system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910049790.5A CN109751786A (en) | 2019-01-18 | 2019-01-18 | Cold-warm type heat recovery system and single cold type heat recovery system and its control method |
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