CN108318273A - A kind of multi-cycle heat pump experimental bench - Google Patents
A kind of multi-cycle heat pump experimental bench Download PDFInfo
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- CN108318273A CN108318273A CN201810373613.8A CN201810373613A CN108318273A CN 108318273 A CN108318273 A CN 108318273A CN 201810373613 A CN201810373613 A CN 201810373613A CN 108318273 A CN108318273 A CN 108318273A
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- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000002474 experimental method Methods 0.000 claims abstract description 32
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 238000001704 evaporation Methods 0.000 claims description 30
- 230000008020 evaporation Effects 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 238000009835 boiling Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000011020 pilot scale process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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Abstract
The invention discloses a kind of multi-cycle heat pump experimental benches, it is desirable to provide a kind of heat pump experimental bench convenient for pilot scale study condition.Including the first compressor set, second compressor set, first four-way reversing valve, second four-way reversing valve, first valve, second valve, second valve, third valve, 4th valve, 5th valve, 6th valve, indoor heat exchanger, gas-liquid separator, outdoor heat exchanger, condenser/evaporator, first throttle valve and second throttle, the heat pump experimental bench of the present invention can realize that summer single stage compress parallel connection refrigeration cycle is in parallel with winter single stage compress using the interface variation of four-way reversing valve, suction-type Auto-cascade cycle respectively, common suction-type Auto-cascade cycle, the experimental bench of overlapping heat pump cycle, contrast experiment can be on an experimental bench by doing valve transfer according to requirement of experiment.It saves experimental bench and builds cost, debugging is easy, improves the accuracy of experimental data.
Description
Technical field
Technical field of experiment equipment of the present invention, more specifically, it relates to one kind, and multicycle heat pump experimental bench can be achieved.
Background technology
With being constantly progressive for technology, heat pump techniques are widely used in heating system.The research of heat pump cycle is needed
Lots of comparing experiments is done, for the ease of the research to heat pump system, develops various experimental benches to realize the operation under different operating modes
Experiment.Currently, heat pump system experimental bench is designed primarily directed to simple subprogram, for this purpose, needing to build in research process more
The experimental bench of kind cycle, for example need to build summer single stage compress parallel connection refrigeration cycle research summer unit parallel connection feature, it builds
Winter single stage compress parallel connection heat pump cycle studies winter unit parallel connection feature, builds winter overlapping heat pump cycle, auto cascade cycle
Height stage compression ratio experimental bench characteristic when studying heat supply in winter.These experimental benches are complicated, parts are more, input cost is high,
And it is difficult to build debugging.Furthermore when doing single argument and being compared to each other experiment, dependent variable must be identical, and which results in more experiments
Platform debugging is difficult.It causes investment big moreover, building kinds of experiments platform, occupies more experimental resources.
Invention content
The present invention is in order to overcome the defects of the prior art, to provide a kind of multi-cycle heat pump experimental bench, is used in summer
Single stage compress Double-head parallel connection refrigeration cycle, and winter is followed using single stage compress Double-head parallel connection heat pump cycle, cascade type heat pump
Ring, respectively suction-type self-cascade heat pump cycle and common suction-type self-cascade heat pump circulation heating, save experimental bench and build cost,
Improve the accuracy of experimental data.
The present invention is achieved through the following technical solutions：
A kind of multi-cycle heat pump experimental bench, including the first compressor set, the second compressor set, the first four-way reversing valve,
Two four-way reversing valves, the first valve, the second valve, the second valve, third valve, the 4th valve, the 5th valve, the 6th valve,
Indoor heat exchanger, gas-liquid separator, outdoor heat exchanger, condenser/evaporator, first throttle valve and second throttle, first pressure
The exhaust end of contracting unit is connect with the first interface of first four-way reversing valve, the suction end of first compressor set and institute
State the third interface connection of the first four-way reversing valve；The second interface of first four-way reversing valve respectively with the first valve and
Two valve one end connect, the 4th interface of first four-way reversing valve respectively with the 6th valve one end and the outdoor heat exchanger
First interface connection；The other end of first valve respectively with third valve, the 4th valve one end and the condensation evaporation
The third interface of device connects, the other end of the third valve respectively with the second interface of the indoor heat exchanger and the 5th valve
One end connection, the other end of the 5th valve connect with the liquid feeding end of the gas-liquid separator, the 4th valve it is another
One end is connect with the outlet side of the gas-liquid separator；The exhaust end of second compressor set and second four-way reversing valve
First interface connection, the suction end of second compressor set connect with the third interface of second four-way reversing valve；Institute
State the second interface of the second four-way reversing valve respectively with the second valve other end and the first interface of the indoor heat exchanger
Connection；4th interface of second four-way reversing valve respectively with the other end of the 6th valve and the condenser/evaporator
First interface connects；The second interface of the outdoor heat exchanger passes through the second throttle and the 4th of the condenser/evaporator the
Interface connects；The liquid outlet of the gas-liquid separator is connected by the first throttle valve and the second interface of the condenser/evaporator
It connects.
When doing summer cooling experiment, experimental bench is according to single stage compress parallel machine set operation:First valve, the 4th valve
And the 5th valve close, second valve, third valve and the 6th valve opening；The first of first four-way reversing valve connects
Mouth is communicated with the 4th interface, and the second interface of first four-way reversing valve is communicated with third interface；The second four-way commutation
The first interface of valve is communicated with the 4th interface, and the second interface of second four-way reversing valve is communicated with third interface；Part work
Matter enters first four-way reversing valve after first compressor set compression boosting, and part working medium is through second compressor
Enter second four-way reversing valve after group compression boosting, the working medium flowed out from second four-way reversing valve passes through the described 6th
After being mixed with the working medium from first four-way reversing valve after valve, heat release is condensed into the outdoor heat exchanger, later, warp
Enter the condenser/evaporator after the second throttle reducing pressure by regulating flow, again through the third after condenser/evaporator heat exchange
Valve enters the indoor heat exchanger evaporation endothermic, and heat in absorption chamber is divided into two-way, is changed all the way through second four-way later
The second compressor set suction end is returned to valve；Another way returns to described through second valve and the first four-way reversing valve
One compressor set suction end is completed for SAPMAC method.
When doing heat supply in winter experiment, experimental bench is according to single stage compress parallel machine set operation：First valve, the 4th valve
It is closed with the 5th valve, second valve, third valve and the 6th valve are opened；The first of first four-way reversing valve connects
Mouth is communicated with second interface, and the third interface of first four-way reversing valve is communicated with the 4th interface；The second four-way commutation
The first interface of valve is communicated with second interface, and the third interface of second four-way reversing valve is communicated with the 4th interface；Part work
Matter enters first four-way reversing valve after first compressor set compression boosting, and part working medium is in second compressor
Enter second four-way reversing valve after group compression boosting, the working medium flowed out from first four-way reversing valve passes through described second
After valve, it is mixed into the indoor heat exchanger with the working medium from second four-way reversing valve and condenses heat release, later, through institute
It states third valve and enters the condenser/evaporator, the working medium flowed out from the condenser/evaporator throttles through the second throttle to drop
After pressure, into the outdoor heat exchanger evaporation endothermic, outdoor environment heat is absorbed, is divided into two-way later, all the way through described first
Four-way reversing valve returns to the first compressor set suction end；Another way is returned to through the 6th valve, the second four-way reversing valve
The second compressor set suction end completes heating cycle.
When doing heat supply in winter experiment, experimental bench is according to suction-type self-cascade heat pump circular flow respectively：First valve,
Third valve and the 6th valve are closed, and second valve, the 4th valve and the 5th valve are opened；First four-way reversing valve
First interface communicated with second interface, the third interface of first four-way reversing valve is communicated with the 4th interface；Described second
The first interface of four-way reversing valve is communicated with second interface, third interface and the 4th interface phase of second four-way reversing valve
It is logical；Part working medium enters first four-way reversing valve after first compressor set compression boosting, and part working medium is described
Enter second four-way reversing valve after the compression boosting of second compressor set, the working medium warp flowed out from first four-way reversing valve
It crosses after second valve after being mixed with the working medium from second four-way reversing valve, is put into indoor heat exchanger condensation
Heat condenses the working medium after heat release and enters the gas-liquid separator through the 5th valve, and low-boiling gas working medium is through the gas
Liquid/gas separator outlet side, the 4th valve, condenser/evaporator third interface into the condenser/evaporator continue condense heat release, warp
Working medium after the condenser/evaporator heat release enters outdoor heat exchanger evaporation after the second throttle reducing pressure by regulating flow and inhales
Heat, and then return to through first four-way reversing valve suction end of first compressor set；High boiling liquid working substance warp
Described in the second interface through the condenser/evaporator enters after the outlet end of the gas-liquid separator, first throttle valve reducing pressure by regulating flow
Condenser/evaporator evaporation endothermic, the working medium flowed out from the condenser/evaporator first interface are returned to through second four-way reversing valve
The second compressor set suction end completes self-folding type heating cycle.
When doing heat supply in winter experiment, experimental bench is according to common suction-type self-cascade heat pump circular flow：First valve
It is closed with third valve, second valve, the 4th valve, the 5th valve and the 6th valve are opened；The first four-way commutation
The first interface of valve is communicated with second interface, and the third interface of first four-way reversing valve is communicated with the 4th interface；Described
The first interface of two four-way reversing valves is communicated with second interface, third interface and the 4th interface phase of second four-way reversing valve
It is logical；Part working medium enters first four-way reversing valve after first compressor set compression boosting, and part working medium is described
Enter second four-way reversing valve after the compression boosting of second compressor set；The working medium warp flowed out from first four-way reversing valve
It crosses after second valve after being mixed with the working medium from second four-way reversing valve, is put into indoor heat exchanger condensation
Heat condenses the working medium after heat release and enters the gas-liquid separator through the 5th valve, and low-boiling gas working medium is through the gas
The third interface of liquid/gas separator outlet side, the 4th valve and condenser/evaporator continues to condense heat release into the condenser/evaporator,
Working medium after the condenser/evaporator heat release enters the outdoor heat exchanger after the second throttle reducing pressure by regulating flow and evaporates
Heat absorption, from the outdoor heat exchanger flow out low-pressure steam with flowed out through the 6th valve from the condenser/evaporator it is low
It is sucked by the first compressor set suction end by first four-way reversing valve after pressure steam mixing；High boiling liquid work
Matter second interface through the condenser/evaporator after the outlet end of the gas-liquid separator, first throttle valve reducing pressure by regulating flow enters
The condenser/evaporator evaporation endothermic, the low-pressure steam come out through the condenser/evaporator first interface are changed with from the outdoor
It is inhaled by second compressor set by second four-way reversing valve after the low-pressure steam mixing that hot device is flowed out through the 6th valve
Gas end sucks, and completes self-folding type heating cycle.
When doing heat supply in winter experiment, experimental bench is according to cascade type heat pump circular flow：Second valve, third valve,
4th valve and the 6th valve are closed, and first valve and the 5th valve are opened；The first of first four-way reversing valve connects
Mouth is communicated with second interface, and the third interface of first four-way reversing valve is communicated with the 4th interface；The second four-way commutation
The first interface of valve is communicated with second interface, and the third interface of second four-way reversing valve is communicated with the 4th interface；The gas
High-pressure reservoir of the liquid/gas separator as low-temperature level experimental bench；Working medium is after second compressor set compression boosting through described the
Two four-way reversing valves enter the indoor heat exchanger and condense heat release, condense the working medium after heat release through described in the 5th valve entrance
Gas-liquid separator, outlet end of the liquid working substance through the gas-liquid separator,OneThrottle valve, condenser/evaporator second interface enter
The condenser/evaporator evaporation endothermic is returned to through the condenser/evaporator first interface and second four-way reversing valve again later
The second compressor set suction end completes high-temperature level heating cycle；Working medium passes through after first compressor set compression boosting
First four-way reversing valve, the condenser/evaporator third interface, which enter in the condenser/evaporator, condenses heat release, and then
Enter the outdoor heat exchanger evaporation endothermic after the 4th interface of the condenser/evaporator, second throttle reducing pressure by regulating flow, steams
Working medium after hair heat absorption returns to the first compressor set suction end through first four-way reversing valve, completes low-temperature level heat supply and follows
Ring.
Compressor in first compressor set and the second compressor set is screw compressor, rotor compressor, screw rod
Any one of compressor and piston compressor.
The indoor heat exchanger and the outdoor heat exchanger are air-cooled or water-cooled heat exchanger.
The condenser/evaporator is plate heat exchanger or double pipe heat exchanger.
The first throttle valve and second throttle are electric expansion valve, heating power expansion valve, capillary or orifice throttle dress
It sets
Compared with prior art, the beneficial effects of the invention are as follows：
1, experimental bench is flexible, highly practical：Five kinds of cycles may be implemented in the heat pump experimental bench of the present invention：It can when summer cooling
To use single stage compress parallel connection refrigeration cycle, winter that single stage compress parallel connection heat pump cycle may be used, cascade type heat pump cycle, divide
Other suction-type self-folding type heat pump cycle or common suction-type self-folding type heat pump cycle.It under the same conditions, can be at one
Five kinds of cycle contrast experiments are on experimental bench, five kinds of cycle conversions are flexible and convenient, convenient for being contrast experiment.Meanwhile saving experiment
Platform builds cost, and debugging is easy, improves the accuracy of experimental data.
2, summer cooling, when Winter heat supply, experimental bench is efficient：Outdoor temperature is special in winter for the heat pump experimental bench of the present invention
When not low, cascade type heat pump cycle may be used, respectively suction-type self-cascade heat pump cycle and common suction-type self-cascade heat pump
Cycle, compressor pressure ratios are small, and experimental bench is efficient.When outdoor temperature is not relatively low in winter, heat supply in parallel may be used and follow
Ring realizes energy adjustment by increasing and decreasing compressor head number in Parallel sets, more energy saving.Especially using change working medium flow mode
When, cascade cycle high temperature grade experimental bench and low-temperature level experimental bench working medium flow proportioning are reasonable, and Parallel sets are thrown by changing
Enter to run head number and realizes flow-rate adjustment.
3, experimental bench is simple in structure, and input cost is low：A five circulating heat pump experimental benches are built to replace building five experiments
Platform, a variety of public identical parts of cycle, reduces input cost.
Description of the drawings
Fig. 1 show a kind of structural schematic diagram of multi-cycle heat pump experimental bench of the present invention；
Fig. 2 show condenser/evaporator interface diagram.
In figure：The first compressor sets of 1-1., the second compressor sets of 1-2., the first four-way reversing valves of 2-1., 2-2. the two or four
Logical reversal valve, the first valves of 3-1., the second valves of 3-2., 3-3. third valves, the 4th valves of 3-4., the 5th valves of 3-5., 3-
6. the 6th valve, 4. indoor heat exchangers, 5. gas-liquid separators, 6-1. first throttle valves, 6-2. second throttle, 7. condensation evaporations
The third of device, the first interface of 7-1. condenser/evaporators, the second interface of 7-2. condenser/evaporators, 7-3. condenser/evaporators connects
Mouthful, the 4th interface of 7-4. condenser/evaporators, 8. outdoor heat exchangers.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of schematic diagram of multi-cycle heat pump experimental bench of the present invention is as Figure 1-Figure 2, including the first compressor set 1-1,
Second compressor set 1-2, the first four-way reversing valve 2-1, the second four-way reversing valve 2-2, the first valve 3-1, the second valve 3-2,
Third valve 3-3, the 4th valve 3-4, the 5th valve 3-5, the 6th valve 3-6, indoor heat exchanger 4, gas-liquid separator 5, outdoor
Heat exchanger 8, condenser/evaporator 7, first throttle valve 6-1 and second throttle 6-2, the exhaust end of the first compressor set 1-1
It is connect with the first interface of the first four-way reversing valve 2-1, the suction end and the described 1st of the first compressor set 1-1
The third interface connection of logical reversal valve 2-1；The second interface of the first four-way reversing valve 2-1 respectively with the first valve 3-1 and
Second one end valve 3-2 connects, the 4th interface of the first four-way reversing valve 2-1 respectively with the 6th one end valve 3-6 and institute
State the first interface connection of outdoor heat exchanger 8；The other end of the first valve 3-1 respectively with third valve 3-3, the 4th valve
The third interface 7-3 connections of the one end 3-4 and the condenser/evaporator 7, the other end of the third valve 3-3 respectively with the room
The second interface of interior heat exchanger 4 is connected with one end of the 5th valve 3-5, the other end and the gas-liquid of the 5th valve 3-5
The liquid feeding end of separator connects, and the other end of the 4th valve 3-4 is connect with the outlet side of the gas-liquid separator；Described
The exhaust end of two compressor set 1-2 is connect with the first interface of the second four-way reversing valve 2-2, the second compressor set 1-
2 suction end is connect with the third interface of the second four-way reversing valve 2-2；The second of the second four-way reversing valve 2-2 connects
Mouth is connect with the first interface of the second valve 3-2 other ends and the indoor heat exchanger 4 respectively；The second four-way commutation
First interface 7-1 of the 4th interface of valve 2-2 respectively with the other end of the 6th valve 3-6 and the condenser/evaporator 7 connects
It connects.The 4th interface that the second interface of the outdoor heat exchanger 8 passes through the second throttle 6-2 and the condenser/evaporator 7
7-4 connections.The outlet end of the gas-liquid separator 5 is connect by the first throttle valve 6-1 and the second of the condenser/evaporator 7
Mouth 7-2 connections.
The first compressor set 1-1 and the second compressor set 1-2 can be single compressor, or more
The compressor being connected in parallel.In the more compressors being connected in parallel, as the first pressure after the exhaust port parallel connection per compressor
The exhaust end of contracting unit 1-1 or the second compressor set 1-2 are used as the first compressor set after the air-breathing interface parallel connection per compressor
The suction end of 1-1 or the second compressor set 1-2.The first compressor set 1-1 can not only be used for single stage compress parallel connection refrigeration experiment
Platform cycle (or heat pump experimental bench cycle) and the cell compression machine of common suction-type auto cascade cycle use, and are alternatively arranged as inhaling respectively
Enter formula Auto-cascade cycle and the high-temperature level compressor of superposition type experimental bench cycle uses；The second compressor set 1-2 can not only be used for list
Cell compression machine of the grade compression refrigeration experiment platform cycle in parallel (or heat pump experimental bench cycle) with common suction-type auto cascade cycle
It uses, also can be used as self-folding type and used with superposition type experimental bench cycle low-temperature level compressor.
When doing summer cooling experiment, experimental bench is according to single stage compress parallel machine set operation:The first valve 3-1, the 4th
Valve 3-4 and the 5th valve 3-5 are closed, and the second valve 3-2, third valve 3-3 and the 6th valve 3-6 are opened.Described
The first interface of one four-way reversing valve 2-1 is communicated with the 4th interface, the second interface and third of the first four-way reversing valve 2-1
Interface communicates.The first interface of the second four-way reversing valve 2-2 is communicated with the 4th interface, the second four-way reversing valve 2-2
Second interface communicated with third interface.Part working medium enters described first after the first compressor set 1-1 compression boostings
Four-way reversing valve 2-1, part working medium enter the second four-way reversing valve 2- after the second compressor set 1-2 compression boostings
2, the working medium flowed out from the second four-way reversing valve 2-2 is changed after the 6th valve 3-6 with from first four-way
After being mixed to the working medium of valve 2-1, heat release is condensed into the outdoor heat exchanger 8, later, is throttled through the second throttle 6-2
Enter the condenser/evaporator 7 after decompression, again through described in third valve 3-3 entrance after the heat exchange of the condenser/evaporator 7
4 evaporation endothermic of indoor heat exchanger, heat in absorption chamber, is divided into two-way, is returned to all the way through the second four-way reversing valve 2-2 later
The second compressor set 1-2 suction ends；Another way returns to described through the second valve 3-2 and the first four-way reversing valve 2-1
First compressor set 1-1 suction ends are completed for SAPMAC method.
When doing heat supply in winter experiment, experimental bench is according to single stage compress parallel machine set operation：The first valve 3-1, the 4th
Valve 3-4 and the 5th valve 3-5 are closed, and the second valve 3-2, third valve 3-3 and the 6th valve 3-6 are opened.Described
The first interface of one four-way reversing valve 2-1 is communicated with second interface, the third interface and the 4th of the first four-way reversing valve 2-1
Interface communicates；The first interface of the second four-way reversing valve 2-2 is communicated with second interface, the second four-way reversing valve 2-2
Third interface communicated with the 4th interface.Part working medium enters described first after the first compressor set 1-1 compression boostings
Four-way reversing valve 2-1, part working medium enter the second four-way reversing valve 2- after the second compressor set 1-2 compression boostings
2, the working medium flowed out from the first four-way reversing valve 2-1 is changed after the second valve 3-2 with from second four-way
It is mixed into the indoor heat exchanger 4 to the working medium of valve 2-2 and condenses heat release, later, enters through the third valve 3-3 described cold
Solidifying evaporator 7, the working medium flowed out from the condenser/evaporator 7 is after the second throttle 6-2 reducing pressure by regulating flow, into the room
8 evaporation endothermic of external heat exchanger absorbs outdoor environment heat, is divided into two-way later, is returned all the way through the first four-way reversing valve 2-1
To the first compressor set 1-1 suction ends；Another way returns to described through the 6th valve 3-6, the second four-way reversing valve 2-2
Second compressor set 1-2 suction ends complete heating cycle.
When doing heat supply in winter experiment, experimental bench is according to suction-type self-cascade heat pump circular flow respectively：First valve
3-1, third valve 3-3 and the 6th valve 3-6 are closed, and the second valve 3-2, the 4th valve 3-4 and the 5th valve 3-5 are beaten
It opens.The first interface of the first four-way reversing valve 2-1 is communicated with second interface, the third of the first four-way reversing valve 2-1
Interface is communicated with the 4th interface；The first interface of the second four-way reversing valve 2-2 is communicated with second interface, second four-way
The third interface of reversal valve 2-2 is communicated with the 4th interface.Part working medium enters after the first compressor set 1-1 compression boostings
The first four-way reversing valve 2-1, part working medium enter second four-way after the second compressor set 1-2 compression boostings
Reversal valve 2-2, the working medium flowed out from the first four-way reversing valve 2-1 after the second valve 3-2 with from described the
After the working medium mixing of two four-way reversing valve 2-2, heat release is condensed into the indoor heat exchanger 4, condenses the working medium after heat release through institute
It states the 5th valve 3-5 and enters the gas-liquid separator 5, low-boiling gas working medium is through 5 outlet side of the gas-liquid separator, the 4th
Valve 3-4, condenser/evaporator third interface 7-3 into the condenser/evaporator 7 continue condense heat release, through the condensation evaporation
Working medium after 7 heat release of device enters 8 evaporation endothermic of the outdoor heat exchanger after the second throttle 6-2 reducing pressure by regulating flow, later,
The suction end of the first compressor set 1-1 is returned to through the first four-way reversing valve 2-1 again；High boiling liquid working substance is through institute
State after the outlet end of gas-liquid separator 5, first throttle valve 6-1 reducing pressure by regulating flow the second interface 7-2 through the condenser/evaporator into
Enter 7 evaporation endothermic of the condenser/evaporator, the working medium flowed out from 7 first interface 7-1 of the condenser/evaporator is through the described 2nd 4
Logical reversal valve 2-2 returns to the second compressor set 1-2 suction ends, completes self-folding type heating cycle.
When doing heat supply in winter experiment, experimental bench is according to common suction-type self-cascade heat pump circular flow：First valve
3-1 and third valve 3-3 are closed, and the second valve 3-2, the 4th valve 3-4, the 5th valve 3-5 and the 6th valve 3-6 are beaten
It opens.The first interface of the first four-way reversing valve 2-1 is communicated with second interface, the third of the first four-way reversing valve 2-1
Interface is communicated with the 4th interface；The first interface of the second four-way reversing valve 2-2 is communicated with second interface, second four-way
The third interface of reversal valve 2-2 is communicated with the 4th interface.Part working medium enters after the first compressor set 1-1 compression boostings
The first four-way reversing valve 2-1, part working medium enter second four-way after the second compressor set 1-2 compression boostings
Reversal valve 2-2.The working medium flowed out from the first four-way reversing valve 2-1 after the second valve 3-2 with from described the
After the working medium mixing of two four-way reversing valve 2-2, heat release is condensed into the indoor heat exchanger 4, condenses the working medium after heat release through institute
It states the 5th valve 3-5 and enters the gas-liquid separator 5, low-boiling gas working medium is through 5 outlet side of the gas-liquid separator, the 4th
The third interface 7-3 of valve 3-4 and condenser/evaporator 7 continues to condense heat release into the condenser/evaporator 7, is steamed through the condensation
It sends out the working medium after 7 heat release of device and enters 8 evaporation endothermic of the outdoor heat exchanger after the second throttle 6-2 reducing pressure by regulating flow, from
The low-pressure steam and the low pressure flowed out through the 6th valve 3-6 from the condenser/evaporator 7 that the outdoor heat exchanger 8 flows out
It is sucked by the first compressor set 1-1 suction ends by the first four-way reversing valve 2-1 after steam mixing；High boiling liquid
Body working medium after the outlet end of the gas-liquid separator 5, first throttle valve 6-1 reducing pressure by regulating flow through the condenser/evaporator 7
Two interface 7-2 enter 7 evaporation endothermic of the condenser/evaporator, and the low pressure come out through 7 first interface 7-1 of the condenser/evaporator is steamed
Gas with mixed from the low-pressure steam that the outdoor heat exchanger 8 is flowed out through the 6th valve 3-6 after by second four-way
Reversal valve 2-2 is sucked by the second compressor set 1-2 suction ends, completes self-folding type heating cycle.
When doing heat supply in winter experiment, experimental bench is according to cascade type heat pump circular flow：The second valve 3-2, third valve
Door 3-3, the 4th valve 3-4 and the 6th valve 3-6 are closed, and the first valve 3-1 and the 5th valve 3-5 are opened.Described first
The first interface of four-way reversing valve 2-1 is communicated with second interface, and the third interface of the first four-way reversing valve 2-1 connects with the 4th
Mouth communicates；The first interface of the second four-way reversing valve 2-2 is communicated with second interface, the second four-way reversing valve 2-2's
Third interface is communicated with the 4th interface；High-pressure reservoir of the gas-liquid separator 5 as low-temperature level experimental bench.Working medium is described
Enter the indoor heat exchanger 4 through the second four-way reversing valve 2-2 after second compressor set 1-2 compression boostings and condense heat release,
It condenses the working medium after heat release and enters the gas-liquid separator 5 through the 5th valve 3-5, liquid working substance is through the gas-liquid separator
5 outlet end, first throttle valve 6-1,7 second interface 7-2 of condenser/evaporator enter 7 evaporation endothermic of the condenser/evaporator, it
Afterwards the second compressor set 1-2 is returned to through the condenser/evaporator first interface 7-1 and the second four-way reversing valve 2-2 again
Suction end completes high-temperature level heating cycle；Working medium is changed after the first compressor set 1-1 compression boostings through first four-way
Enter in the condenser/evaporator 7 to valve 2-1, the condenser/evaporator third interface -3 and condense heat release, and then through described cold
Enter 8 evaporation endothermic of the outdoor heat exchanger after 4th interface 7-4 of solidifying evaporator 7, second throttle 6-2 reducing pressure by regulating flow, steams
Working medium after hair heat absorption returns to the first compressor set 1-1 suction ends through the first four-way reversing valve 2-1, completes low-temperature level
Heating cycle.
Wherein, the compressor in the first compressor set 1-1 and the second compressor set 1-2 is screw compressor, rotor
Any one of compressor, helical-lobe compressor and piston compressor.
The indoor heat exchanger 4 and the outdoor heat exchanger 8 are air-cooled or water-cooled heat exchanger.
The condenser/evaporator 7 is plate heat exchanger or double pipe heat exchanger.
The first valve 3-1, the second valve 3-2, third valve 3-3, the 4th valve 3-4, the 5th valve 3-5, the 6th
Valve 3-6 can be by replacements such as hand stop valve, ball valves.
The first four-way reversing valve 2-1 and the second four-way reversing valve 2-2 also can be by multiple valves or multiple triple valve generations
It replaces.
The heat pump experimental bench of the present invention can realize that summer single stage compress parallel connection is freezed using the interface variation of four-way reversing valve
Recycle in parallel with winter single stage compress, suction-type Auto-cascade cycle, common suction-type Auto-cascade cycle, overlapping heat pump cycle respectively experiment
Platform, contrast experiment can be on an experimental bench by doing valve transfer according to requirement of experiment.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of multi-cycle heat pump experimental bench, which is characterized in that including the first compressor set, the second compressor set, the first four-way
Reversal valve, the second four-way reversing valve, the first valve, the second valve, the second valve, third valve, the 4th valve, the 5th valve,
6th valve, indoor heat exchanger, gas-liquid separator, outdoor heat exchanger, condenser/evaporator, first throttle valve and second throttle,
The exhaust end of first compressor set is connect with the first interface of first four-way reversing valve, first compressor set
Suction end is connect with the third interface of first four-way reversing valve；The second interface of first four-way reversing valve is respectively with
One valve and the connection of second valve one end, the 4th interface of first four-way reversing valve respectively with the 6th valve one end and described
The first interface of outdoor heat exchanger connects；The other end of first valve respectively with third valve, the 4th valve one end and institute
State the third interface connection of condenser/evaporator, the other end of the third valve second interface with the indoor heat exchanger respectively
It being connected with one end of the 5th valve, the other end of the 5th valve is connect with the liquid feeding end of the gas-liquid separator, and described
The other end of four valves is connect with the outlet side of the gas-liquid separator；The exhaust end of second compressor set and described second
The first interface of four-way reversing valve connects, and the suction end of second compressor set and the third of second four-way reversing valve connect
Mouth connection；The second interface of second four-way reversing valve respectively with the second valve other end and the indoor heat exchanger
First interface connects；4th interface of second four-way reversing valve respectively with the other end of the 6th valve and the condensation
The first interface of evaporator connects；The second interface of the outdoor heat exchanger passes through the second throttle and the condensation evaporation
4th interface of device connects；The liquid outlet of the gas-liquid separator pass through the first throttle valve and the condenser/evaporator the
Two interfaces connect.
2. multi-cycle heat pump experimental bench according to claim 1, which is characterized in that when doing summer cooling experiment, experimental bench
According to single stage compress parallel machine set operation:First valve, the 4th valve and the 5th valve are closed, second valve, the
Three valves and the 6th valve are opened；The first interface of first four-way reversing valve is communicated with the 4th interface, first four-way
The second interface of reversal valve is communicated with third interface；The first interface of second four-way reversing valve is communicated with the 4th interface, institute
The second interface for stating the second four-way reversing valve is communicated with third interface；Part working medium is after first compressor set compression boosting
Into first four-way reversing valve, part working medium is changed after second compressor set compression boosting into second four-way
To valve, the working medium flowed out from second four-way reversing valve is after the 6th valve and from first four-way reversing valve
Working medium mixing after, into the outdoor heat exchanger condense heat release, later, after the second throttle reducing pressure by regulating flow enter institute
Condenser/evaporator is stated, entering indoor heat exchanger evaporation through the third valve again after condenser/evaporator heat exchange inhales
Heat, heat in absorption chamber, is divided into two-way, returns to the second compressor set air-breathing through second four-way reversing valve all the way later
End；Another way returns to the first compressor set suction end through second valve and the first four-way reversing valve, completes cooling and follows
Ring.
3. multi-cycle heat pump experimental bench according to claim 1, which is characterized in that when doing heat supply in winter experiment, experimental bench
According to single stage compress parallel machine set operation：First valve, the 4th valve and the 5th valve are closed, second valve, the
Three valves and the 6th valve are opened；The first interface of first four-way reversing valve is communicated with second interface, first four-way
The third interface of reversal valve is communicated with the 4th interface；The first interface of second four-way reversing valve is communicated with second interface, institute
The third interface for stating the second four-way reversing valve is communicated with the 4th interface；Part working medium is after first compressor set compression boosting
Into first four-way reversing valve, part working medium is changed after second compressor set compression boosting into second four-way
To valve, the working medium flowed out from first four-way reversing valve commutates after second valve with from second four-way
The working medium of valve is mixed into the indoor heat exchanger condensation heat release, later, enters the condenser/evaporator through the third valve,
The working medium flowed out from the condenser/evaporator is evaporated into the outdoor heat exchanger and is inhaled after the second throttle reducing pressure by regulating flow
Heat absorbs outdoor environment heat, is divided into two-way later, returns to first compressor set through first four-way reversing valve all the way
Suction end；Another way returns to the second compressor set suction end through the 6th valve, the second four-way reversing valve, completes heat supply
Cycle.
4. multi-cycle heat pump experimental bench according to claim 1, which is characterized in that when doing heat supply in winter experiment, experimental bench
According to suction-type self-cascade heat pump circular flow respectively：First valve, third valve and the 6th valve are closed, and described second
Valve, the 4th valve and the 5th valve are opened；The first interface of first four-way reversing valve is communicated with second interface, and described
The third interface of one four-way reversing valve is communicated with the 4th interface；The first interface of second four-way reversing valve and second interface phase
Logical, the third interface of second four-way reversing valve is communicated with the 4th interface；Part working medium is compressed in first compressor set
Enter first four-way reversing valve after boosting, part working medium enters described second after second compressor set compression boosting
Four-way reversing valve, the working medium flowed out from first four-way reversing valve is after second valve and from second four-way
After the working medium mixing of reversal valve, heat release is condensed into the indoor heat exchanger, condenses the working medium after heat release through the 5th valve
Into the gas-liquid separator, low-boiling gas working medium is through the gas-liquid separator outlet side, the 4th valve, condenser/evaporator
Third interface continue to condense heat release into the condenser/evaporator, working medium after the condenser/evaporator heat release is through described the
Enter the outdoor heat exchanger evaporation endothermic after two throttle valve reducing pressure by regulating flow, and then is returned to through first four-way reversing valve
The suction end of first compressor set；Outlet end of the high boiling liquid working substance through the gas-liquid separator, first throttle valve
Second interface through the condenser/evaporator after reducing pressure by regulating flow enters the condenser/evaporator evaporation endothermic, from the condensation evaporation
The working medium of device first interface outflow returns to the second compressor set suction end through second four-way reversing valve, completes Auto-cascade cycle
Formula heating cycle.
5. multi-cycle heat pump experimental bench according to claim 1, which is characterized in that when doing heat supply in winter experiment, experimental bench
According to common suction-type self-cascade heat pump circular flow：First valve and third valve are closed, second valve, the 4th
Valve, the 5th valve and the 6th valve are opened；The first interface of first four-way reversing valve is communicated with second interface, and described
The third interface of one four-way reversing valve is communicated with the 4th interface；The first interface of second four-way reversing valve and second interface phase
Logical, the third interface of second four-way reversing valve is communicated with the 4th interface；Part working medium is compressed in first compressor set
Enter first four-way reversing valve after boosting, part working medium enters described second after second compressor set compression boosting
Four-way reversing valve；The working medium flowed out from first four-way reversing valve is after second valve and from second four-way
After the working medium mixing of reversal valve, heat release is condensed into the indoor heat exchanger, condenses the working medium after heat release through the 5th valve
Into the gas-liquid separator, low-boiling gas working medium is through the gas-liquid separator outlet side, the 4th valve and condensation evaporation
The third interface of device continues to condense heat release into the condenser/evaporator, described in the working medium warp after the condenser/evaporator heat release
Enter the outdoor heat exchanger evaporation endothermic after second throttle reducing pressure by regulating flow, the low-pressure steam flowed out from the outdoor heat exchanger
With mixed from the low-pressure steam that the condenser/evaporator is flowed out through the 6th valve after by first four-way reversing valve
It is sucked by the first compressor set suction end；Outlet end, first segment of the high boiling liquid working substance through the gas-liquid separator
The second interface through the condenser/evaporator enters the condenser/evaporator evaporation endothermic after flowing valve reducing pressure by regulating flow, through the condensation
The low-pressure steam that evaporator first interface comes out is mixed with the low-pressure steam flowed out through the 6th valve from the outdoor heat exchanger
It is sucked afterwards by the second compressor set suction end by second four-way reversing valve, completes self-folding type heating cycle.
6. multi-cycle heat pump experimental bench according to claim 1, which is characterized in that when doing heat supply in winter experiment, experimental bench
According to cascade type heat pump circular flow：Second valve, third valve, the 4th valve and the 6th valve are closed, and described first
Valve and the 5th valve are opened；The first interface of first four-way reversing valve is communicated with second interface, and first four-way changes
It is communicated to the third interface of valve with the 4th interface；The first interface of second four-way reversing valve is communicated with second interface, described
The third interface of second four-way reversing valve is communicated with the 4th interface；The gas-liquid separator is stored up as the high pressure of low-temperature level experimental bench
Liquid device；It is cold that working medium enters the indoor heat exchanger after second compressor set compression boosting through second four-way reversing valve
Solidifying heat release condenses the working medium after heat release and enters the gas-liquid separator through the 5th valve, and liquid working substance is through the gas-liquid point
Enter the condenser/evaporator evaporation endothermic from the outlet end of device, first throttle valve, condenser/evaporator second interface, passes through again later
The condenser/evaporator first interface and second four-way reversing valve return to the second compressor set suction end, complete high temperature
Grade heating cycle；Working medium is after first compressor set compression boosting through first four-way reversing valve, the condensation evaporation
Device third interface, which enters in the condenser/evaporator, condenses heat release, and then the 4th interface through the condenser/evaporator, second
Enter the outdoor heat exchanger evaporation endothermic after throttle valve reducing pressure by regulating flow, the working medium after evaporation endothermic commutates through first four-way
Valve returns to the first compressor set suction end, completes low-temperature level heating cycle.
7. the multi-cycle heat pump experimental bench according to any one of claim 1-6, which is characterized in that first compressor
Compressor in group and the second compressor set is in screw compressor, rotor compressor, helical-lobe compressor and piston compressor
It is any.
8. multi-cycle heat pump experimental bench according to claim 7, which is characterized in that the indoor heat exchanger and the outdoor
Heat exchanger is air-cooled or water-cooled heat exchanger.
9. multi-cycle heat pump experimental bench according to claim 7, which is characterized in that the condenser/evaporator is plate-type heat-exchange
Device or double pipe heat exchanger.
10. multi-cycle heat pump experimental bench according to claim 7, which is characterized in that the first throttle valve and the second section
Stream valve is electric expansion valve, heating power expansion valve, capillary or throttle orifice plate apparatus.
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| CN110332584A (en) * | 2019-07-02 | 2019-10-15 | 北京工业大学 | The heat pipe-type heating plant of multiple compressor parallels |
| CN110534004A (en) * | 2019-09-03 | 2019-12-03 | 西南大学 | A kind of low temperature control experiment porch |
| CN111141049A (en) * | 2019-12-31 | 2020-05-12 | 同济大学 | Cascade high temperature heat pump laboratory bench |
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| CN108318273B (en) | 2024-01-16 |
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