CN107560212B - A kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system - Google Patents
A kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system Download PDFInfo
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- CN107560212B CN107560212B CN201710924190.XA CN201710924190A CN107560212B CN 107560212 B CN107560212 B CN 107560212B CN 201710924190 A CN201710924190 A CN 201710924190A CN 107560212 B CN107560212 B CN 107560212B
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Abstract
The invention discloses a kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system, the system comprises: economic benefits and social benefits free-piston type sterlin refrigerator circuit and harmonic oscillator (1) is moved back and forth；The economic benefits and social benefits free-piston type sterlin refrigerator circuit includes: successively end to end engine medium temperature radiator (2), engine regenerator (3), engine heater (4), engine thermal separator tube (5), refrigeration machine medium temperature radiator (6), refrigeration machine regenerator (7), refrigeration machine cool end heat exchanger (8) and refrigeration machine displacer (9)；The reciprocating motion harmonic oscillator (1) is connected with engine medium temperature radiator (2) and refrigeration machine displacer (9).System of the invention reduces the free-piston displacer mechanical moving element in an engine compared to the structure of classical economic benefits and social benefits sterlin refrigerator, thus the reliability and service life that reduce the mechanical oscillation of system, improve system.
Description
Technical field
The present invention relates to refrigeration machine/art of heat pumps more particularly to a kind of economic benefits and social benefits free-piston type Stirling thermal drivers to freeze
Machine/heat pump system.
Background technique
The energy is the important material base of human survival, economic development and social progress.Nowadays, global Energy Consumption
Constantly increase, traditional non-renewable energy resources and traditional rudimentary energy consumption pattern are no longer satisfied human civilization increasingly
The material and cultural needs of growth.Therefore, energy-saving and emission-reduction are the key that China more preferably carries out modernization construction, economic development behave.
In consideration of it, can use low-grade heat source more at this stage realizes that the hot actuating device of high-efficiency operation is rapidly developing.
Scotsman's Stirling (O.R.Stirling) proposition one in 1816 was held by two constant temperature process with two etc.
The patent of the thermodynamic cycle of Cheng Zucheng, referred to as Stirling cycle.The circulation is used primarily for Thermal Motor, and the working medium in system exists
It is compressed continuously and expands under different potential temperatures, last output work.And Fig. 1 is exactly the stirling generator using Stirling direct circulation
Structural schematic diagram.
Refrigeration effect then is produced further through reversed stirling-cycle, and by this machine to freeze using inverse Stirling cycle
Device is commonly referred to as sterlin refrigerator.And Fig. 2 is the structural schematic diagram of single-stage Stirling cycle refrigerator.The sterlin refrigerator
Mainly by linear compressor, refrigeration machine displacer, refrigeration machine cool end heat exchanger, refrigeration machine medium temperature radiator and refrigeration machine regenerator
Composition.
Sterlin refrigerator generates pressure wave using the piston moved back and forth, and without flow losses, therefore its efficiency is very
Height, structure is also very compact, is one of the active refrigeration machine for being applied to space refrigeration earliest.It is main existing for sterlin refrigerator
Want problem be larger, sealing ring the abrasion of vibration and bearing service life it is shorter.Requirement due to space application to the service life is relatively high,
The development of sterlin refrigerator mainly surrounds how to improve the expansion of its service life.
The research in relation to economic benefits and social benefits sterlin refrigerator is then carried out again.Classical economic benefits and social benefits sterlin refrigerator is by free-piston
Stirling engine, free-piston Stirling cooler and phase modulation kinoplaszm amount composition, as shown in figure 3, this is special for traditional economic benefits and social benefits
The structural schematic diagram of woods refrigeration machine.Stirling engine converts heat to sound function first, by intermediate phase modulation kinoplaszm amount to sound
The transmitting of function, and then sterlin refrigerator is driven, realize the purpose of thermal drivers refrigeration or pump heat, it has compact-sized, efficiency
High, environmentally protective advantage.But classical economic benefits and social benefits Stirling structure introduces phase modulation kinoplaszm amount, and it is larger and can thus to bring vibration
A series of problems, such as reducing by property, these problems limit the development and application of economic benefits and social benefits sterlin refrigerator to a certain extent.Fig. 4
Then freeze for another thermal drivers or pump hot systems, it is known as VM circulating refrigerator system.The tradition of VM refrigeration system and Fig. 3
Thermal drivers economic benefits and social benefits stirling refrigeration has many similar parts, but it does not have mechanical resonant, therefore the pressure wave in VM system
It is dynamic mainly to be determined by the temperature of system high temperature chamber, medium temperature chamber and low temperature cavity, therefore engine section is also referred to as thermocompressor.VM
Refrigeration system uses only hot compression, and it is low that there are pressure ratios, the low problem of power density.
Summary of the invention
It is an object of the invention to overcome the above problem existing for current economic benefits and social benefits sterlin refrigerator and VM refrigeration system,
A kind of novel economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system is provided, there is compact-sized, mechanical movement
Component is few, and pressure ratio is high, power density is high, and energy utilization efficiency is high, and reliability is higher, the advantages of using environmentally friendly gas working medium；And
Can be using low-grade heat source as heat source, utilization efficiency of heat energy is higher.Novel economic benefits and social benefits provided by the invention are freely lived
Plug Stirling thermal drivers refrigeration machine/heat pump system has wide development in air conditioner using residual heat refrigerating field and should prospect.
To achieve the goals above, the present invention provides a kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat
Pumping system, the system comprises: economic benefits and social benefits free-piston type sterlin refrigerator circuit and reciprocating motion harmonic oscillator 1；The economic benefits and social benefits
Free-piston type sterlin refrigerator circuit include: successively end to end engine medium temperature radiator 2, engine regenerator 3,
Engine heater 4, engine thermal separator tube 5, refrigeration machine medium temperature radiator 6, refrigeration machine regenerator 7, the heat exchange of refrigeration machine cold end
Device 8 and refrigeration machine displacer 9；The reciprocating motion harmonic oscillator 1 is connected with engine medium temperature radiator 2 and refrigeration machine displacer 9
It is logical.
As a kind of improvement of above system, the origin of heat that the engine heater 4 absorbs is in low-grade heating
Heat source, low-grade heat source are industrial exhaust heat, residual heat of tail gas of automobile or solar energy.
As a kind of improvement of above system, the gas working medium in the system be helium, argon gas, air, nitrogen or it
Mixed gas.
As a kind of improvement of above system, the cold end piston of the refrigeration machine displacer 9 and the end face face of hot end piston
The ratio between product is between 0.01-100, so as to sound field phase in better regulating system.
As a kind of improvement of above system, the reciprocating motion harmonic oscillator 1 uses opposed Double harmonic oscillators structure.
A kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system, the system comprises: economic benefits and social benefits are freely lived
Plug sterlin refrigerator circuit and reciprocating motion harmonic oscillator 1；The economic benefits and social benefits free-piston type sterlin refrigerator circuit setting
At coaxial configuration, be axis with refrigeration machine displacer 9, be from top to bottom sequentially arranged along axial direction: engine heater 4 is started
Machine regenerator 3, engine medium temperature radiator 2, engine thermal separator tube 5, refrigeration machine medium temperature radiator 6,7 and of refrigeration machine regenerator
Refrigeration machine cool end heat exchanger 8；The reciprocating motion harmonic oscillator 1 is connected with engine medium temperature radiator 2 and refrigeration machine displacer 9
It is logical.
As a kind of improvement of above system, the origin of heat that the engine heater 4 absorbs is in low-grade heating
Heat source, low-grade heat source are industrial exhaust heat, residual heat of tail gas of automobile or solar energy.
As a kind of improvement of above system, the gas working medium in the system be helium, argon gas, air, nitrogen or it
Mixed gas.
As a kind of improvement of above system, the cold end piston of the refrigeration machine displacer 9 and the end face face of hot end piston
The ratio between product is between 0.01-100, so as to sound field phase in better regulating system.
As a kind of improvement of above system, the reciprocating motion harmonic oscillator 1 uses opposed Double harmonic oscillators structure.
Economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system of the invention, the advantage is that:
1, system of the invention can form a kind of heat utilization of highly effective refrigeration using low-grade heat source as heat source
Mode has high-efficient remarkable advantage；
2, system of the invention uses the environmentally friendly gas working medium such as helium, argon gas, air, nitrogen or their mixed gas,
There is no greenhouse effects, environmentally friendly；
3, system of the invention reduces oneself in an engine compared to the structure of classical economic benefits and social benefits sterlin refrigerator
By piston displacer mechanical moving element, to reduce the mechanical oscillation of system, the reliability for improving system and operation longevity
Life；For VM circulating refrigerator system, the existing hot compression of system of the invention also has mechanical compression, therefore can be real
Existing higher pressure ratio, to have higher power density, more compact structure and less material consumption；
System of the invention can efficiently solve classical economic benefits and social benefits stirling refrigeration technology and VM Refrigeration Technique faces
Disadvantage has great effects of energy saving and emission reduction and wide application prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the free-piston type stirling generator of the prior art；
Fig. 2 is the structural schematic diagram of the free-piston type sterlin refrigerator of the prior art；
Fig. 3 is the structural schematic diagram of the economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine of the prior art；
Fig. 4 is the general flow chart of the VM circulatory system of the prior art；
Fig. 5 is economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system structure of the embodiment of the present invention 1
Schematic diagram；
Fig. 6 is the structural schematic diagram of refrigeration machine displacer of the invention；
Fig. 7 is economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system structure of the embodiment of the present invention 2
Schematic diagram.
Appended drawing reference:
1, harmonic oscillator 2, engine medium temperature radiator are moved back and forth
3, engine regenerator 4, engine heater
5, engine thermal separator tube 6, refrigeration machine medium temperature radiator
7, refrigeration machine regenerator 8, refrigeration machine cool end heat exchanger
9, refrigeration machine displacer
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, is clearly and completely described technical solution of the present invention, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention efficiently utilizes low-grade heat source to drive, and is freezed using economic benefits and social benefits free-piston type Stirling cycle, with tradition
VM refrigeration system compare, it can be run with high-frequency, can achieve higher work pressure ratio, realize higher power density and
The densification of structure and the low cost of processing and fabricating；Compared with traditional economic benefits and social benefits thermal drivers Stirling refrigerating system, it reduces
Displacer in engine, structure is more simple, processing and manufacturing difficulty reduces, operating reliability greatly improves, it is easy to accomplish
Industrial production and practical application.
Embodiment 1
As shown in figure 5, a kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump of the embodiment of the present invention 1
System, comprising: economic benefits and social benefits free-piston type sterlin refrigerator circuit and reciprocating motion harmonic oscillator 1.The economic benefits and social benefits free-piston type
Sterlin refrigerator circuit includes: successively end to end engine medium temperature radiator 2, engine regenerator 3, engine heating
Device 4, engine thermal separator tube 5, refrigeration machine medium temperature radiator 6, refrigeration machine regenerator 7, refrigeration machine cool end heat exchanger 8 and refrigeration machine
Displacer 9；The reciprocating motion harmonic oscillator 1 is connected with engine medium temperature radiator 2 and refrigeration machine displacer 9, for adjusting
The resonant frequency harmony field phase of system.
The origin of heat absorbed from engine heater 4 is in low-grade heat source, more than industrial exhaust heat, vehicle exhaust
Heat, solar energy etc. are conducive to drive using some low-grade heat sources to reach energy-saving and environment-friendly purpose.
At work, gas working medium is by hair for the economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system
It is 200-500 DEG C that motivation heater 4, which absorbs heat heat source temperature from heat source, and a part of heat is by gas working medium by starting
Machine medium temperature radiator 2 to system external world heat release medium temperature source temperature be 30-60 DEG C, and the heat of another part pass through engine return
Hot device 3 is converted into sound function and acts on refrigerating/heat pump subsystem, by gas working medium by refrigeration machine cool end heat exchanger 8 from low
Temperature-heat-source absorbs heat generation refrigerating capacity and has the function that refrigeration, and sink temperature is 0-10 DEG C, and passes through refrigeration machine medium temperature radiator 6
Outwardly heat release medium temperature source temperature is 40-60 DEG C, such cycle operation.
Gas working medium in the system is the environmentally friendly gas work such as helium, argon gas, air, nitrogen or their mixed gas
Matter.
The structural schematic diagram of the refrigeration machine displacer 9 as shown in fig. 6, its cold end piston and hot end piston face area
The ratio of difference, the face area of cold end piston and hot end piston is located at 0.01-100 range, so as in preferably regulating system
Sound field phase.Refrigeration machine displacer 9 is a component for movement, and movement is joined by power suffered by the piston of both ends and the structure of displacer
Number influences.Piston area is different, increases a variable parameter, the sound field phase change range before and after displacer is bigger.
Opposed Double harmonic oscillators can be used in the economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system
Structure or entirety are made into opposed mechanism, to reduce the vibration and noise of system.
Embodiment 2:
In order to which the purpose of application is better achieved, complete machine can take coaxial structure, will be so that structure is more stepped up
It gathers, reliability increases.As shown in fig. 7, the economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump of the present embodiment 2
System is identical as the building block in 1 system of embodiment, and system includes economic benefits and social benefits free-piston type sterlin refrigerator circuit and past
Harmonic oscillator 1 is moved again.Implement 2 difference from example 1 is that, the economic benefits and social benefits free-piston type sterlin refrigerator circuit
It is arranged to coaxial configuration, is axis with refrigeration machine displacer 9, has from bottom to top been sequentially arranged along axial direction: engine medium temperature heat release
Device 2, engine regenerator 3, engine heater 4, engine thermal separator tube 5, refrigeration machine medium temperature radiator 6, refrigeration machine backheat
Device 7 and refrigeration machine cool end heat exchanger 8；The reciprocating motion harmonic oscillator 1 and engine medium temperature radiator 2 and refrigeration machine displacer 9
It is connected.To keep structure more compact.Embodiment 2 is identical with the System Working Principle of embodiment 1.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system, which is characterized in that the system comprises:
Economic benefits and social benefits free-piston type sterlin refrigerator circuit and reciprocating motion harmonic oscillator (1)；The economic benefits and social benefits free-piston type Stirling system
Cold circuit includes: successively end to end engine medium temperature radiator (2), engine regenerator (3), engine heater
(4), engine thermal separator tube (5), refrigeration machine medium temperature radiator (6), refrigeration machine regenerator (7), refrigeration machine cool end heat exchanger (8)
With refrigeration machine displacer (9)；The reciprocating motion harmonic oscillator (1) and engine medium temperature radiator (2) and refrigeration machine displacer (9)
It is connected.
2. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 1, feature exist
In in low-grade heat source, low-grade heat source is the origin of heat that the engine heater (4) absorbs
Industrial exhaust heat, residual heat of tail gas of automobile or solar energy.
3. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 1, feature exist
In the gas working medium in the system is helium, argon gas, air, nitrogen or their mixed gas.
4. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 1, feature exist
In the cold end piston of, the refrigeration machine displacer (9) and the ratio between the face area of hot end piston between 0.01-100.
5. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 1, feature exist
In reciprocating motion harmonic oscillator (1) uses opposed Double harmonic oscillators structure.
6. a kind of economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system, which is characterized in that the system comprises:
Economic benefits and social benefits free-piston type sterlin refrigerator circuit and reciprocating motion harmonic oscillator (1)；The economic benefits and social benefits free-piston type Stirling system
Cold circuit is arranged to coaxial configuration, with refrigeration machine displacer (9) for axis, has from bottom to top been sequentially arranged: having started along axial direction
Machine medium temperature radiator (2), engine regenerator (3), engine heater (4), engine thermal separator tube (5), refrigeration machine medium temperature
Radiator (6), refrigeration machine regenerator (7) and refrigeration machine cool end heat exchanger (8)；The reciprocating motion harmonic oscillator (1) and engine
Medium temperature radiator (2) and refrigeration machine displacer (9) are connected.
7. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 6, feature exist
In in low-grade heat source, low-grade heat source is the origin of heat that the engine heater (4) absorbs
Industrial exhaust heat, residual heat of tail gas of automobile or solar energy.
8. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 6, feature exist
In the gas working medium in the system is helium, argon gas, air, nitrogen or their mixed gas.
9. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 6, feature exist
In the cold end piston of, the refrigeration machine displacer (9) and the ratio between the face area of hot end piston between 0.01-100.
10. economic benefits and social benefits free-piston type Stirling thermal drivers refrigeration machine/heat pump system according to claim 6, feature exist
In reciprocating motion harmonic oscillator (1) uses opposed Double harmonic oscillators structure.
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| CN109205736B (en) * | 2018-09-12 | 2023-05-23 | 天津工业大学 | Stirling cycle-based thermal drive free piston reverse osmosis sea water desalination power system |
| CN110966790B (en) * | 2018-09-30 | 2021-07-20 | 中国科学院理化技术研究所 | Thermally driven Stirling refrigerator |
| CN112648106A (en) * | 2019-10-10 | 2021-04-13 | 天津工业大学 | Beta type stirling drive free piston seawater desalination pressurization system |
| CN110986415A (en) * | 2019-11-26 | 2020-04-10 | 湖南大学 | Double-effect Stirling device and operation control method thereof |
| CN111207529B (en) * | 2020-01-15 | 2021-04-13 | 浙江大学 | Free piston engine direct drive's cryocooler |
| CN115388580B (en) * | 2022-07-18 | 2023-07-28 | 北京空间飞行器总体设计部 | VM circulation heat pump suitable for space is used |
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