CN106091463A - 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof - Google Patents
4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof Download PDFInfo
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- CN106091463A CN106091463A CN201610654637.1A CN201610654637A CN106091463A CN 106091463 A CN106091463 A CN 106091463A CN 201610654637 A CN201610654637 A CN 201610654637A CN 106091463 A CN106091463 A CN 106091463A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof, Cryo Refrigerator includes compressor, multistage regenerating type low-temperature refrigerator and connects the heat bridge of refrigeration machine at different levels, and uses controlled heat pipe to substitute traditional material copper as heat bridge.Controlled heat pipe relies on the gas-liquid phase transition heat transfer of working fluid, and thermal resistance is the least, the big several orders of magnitude of the thermal conductivity ratio copper of controlled heat pipe under unit mass；Being filled with noble gas in controlled heat pipe, the thermal resistance of its condensation segment reduces along with the increase of heat flow density, and therefore the operating temperature of heat pipe only has small change；Controlled heat pipe has the advantages such as lightweight, volume is little compared to copper, is particularly well-suited to the fields such as Space Military.
Description
Technical field
The present invention relates to refrigeration machine, particularly relate to a kind of 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and
Its refrigerating method.
Background technology
Along with the development of science and technology, regenerating type low-temperature refrigerator is owing to having reliability height, life-span length, efficiency height, control
The advantages such as system is simple, all obtain more and more extensive in fields such as Aero-Space, defence and military, low-temperature superconducting, medical treatment, transportation
Application.
Multistage regenerating type low-temperature refrigerator can be divided into thermal coupling to couple with gas according to coupled modes.The wherein structure of thermal coupling
It is that high-temperature level regenerator carries out pre-cooling by heat bridge to low-temperature level regenerator.Coupling compared to gas, thermal coupling typically uses multiple pressure
Contracting machine drives respectively, at different levels between there is not the assignment problem of working medium quality stream, it is simple to experiment and theory analysis；Different warm areas
Regenerator frequency optimum traffic, the blowing pressure are different, and gas coupled mode cannot be separately optimized, and the low-temperature level of thermal coupling type and
At low temperatures without the coupling of quality stream between pre-cooling level, the operating condition of regenerators at different levels can be with independent optimization, it is easy to obtain relatively
Excellent performance.Therefore, multistage regenerating type low-temperature refrigerator typically uses thermal coupling.
Traditional multistage regenerating type low-temperature refrigerator typically uses copper as heat bridge.There is many when copper is as heat bridge to ask
Topic: in order to strengthen heat-transfer capability, tradition heat bridge typically uses solid copper pipe, and copper density is higher, and quality is relatively big, is unfavorable for alleviating
Refrigeration machine bears a heavy burden；The thermal resistance of copper is higher, and heat transfer temperature difference is relatively big, and along with heat flow density (pre-cold) increase in heat bridge, heat transfer
The temperature difference increases, and the irreversible regenerative losses of regenerator increases, and is unfavorable for improving refrigerating efficiency and reducing zero load cryogenic temperature, especially
The irreversible heat exchange loss causing regenerator is increased dramatically by it for 20K warm area, increasing of heat transfer temperature difference.Therefore, the most excellent
The design of heat-transformation bridge is significant for optimizing multistage regenerating type low-temperature refrigerator.
Summary of the invention
The technical problem to be solved is for defect involved in background technology, it is provided that a kind of refrigeration effect
Rate is good, reliability is high 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof.
The present invention solves above-mentioned technical problem by the following technical solutions:
4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, including the first compressor, the second compressor, one-level gas
Storehouse, one-level inertia tube, one-level vascular, one-level regenerator, two grades of regenerators, three grades of regenerators, three grades of air reservoirs, three grades of inertia tubes,
One-level mozzle, one-level heat bridge, two grades of air reservoirs, two grades of inertia tubes, secondary vein pipe, tertiary vein pipe, two grades of mozzles, two grades of heat bridges
With three grades of mozzles；
Wherein, the first compressor, one-level regenerator, one-level mozzle, one-level vascular, one-level inertia tube, one-level air reservoir order phase
Connect；Second compressor outlet is connected with two grades of regenerators, three grades of regenerator entrances respectively；Two grades of regenerators, two grades of water conservancy diversion
Pipe, secondary vein pipe, two grades of inertia tubes, two grades of air reservoir orders are connected；Three grades of regenerators, three grades of mozzles, tertiary vein pipe, three grades
Inertia tube, three grades of air reservoir orders are connected；One-level heat bridge wraps in the outlet of one-level regenerator, two grades of regenerators respectively
Portion, the first half of three grades of regenerators, carry out thermal coupling connection；Two grades of heat bridges wrap respectively the outlet of two grades of regenerators, three grades
The lower half of regenerator, carries out thermal coupling connection；
Described first heat bridge, the second heat bridge all use controlled heat pipe as Heat Conduction Material.
Above-mentioned controlled heat pipe realizes the heat conduction under different warm area by filling different working fluid, by filling nitrogen
Realize the heat conduction under 80K warm area, realize the heat conduction under 20K warm area by filling hydrogen.
The operation principle of this controlled heat pipe is: the condensation segment of controlled heat pipe connects gas dome, is wherein filled with noble gas.
When heat pipe does not works, noble gas uniformly mixes with refrigerant vapor.During heat pipe work, the refrigerant vapor of evaporator section carries indifferent gas
Direction of flow condensation segment.Refrigerant vapor returns evaporator section by tube core after condensation segment condenses into liquid.Noble gas is at cold end not
Disconnected accumulation.After a period of time, whole noble gases just accumulate in gas dome and condensation segment, form a vent plug.When heat pipe works
When temperature increases, inner vapor pressure raises, and compresses vent plug, makes the effective area of dissipation of condensation segment increase, and reduces the heat of condensation segment
Resistance, increases amount of cooling water, makes the rising of heat pipe operating temperature be inhibited.On the contrary, when heat pipe operating temperature reduces, then vent plug is swollen
Swollen, increase condensation segment thermal resistance, make heat pipe operating temperature no longer reduce.So operating temperature of heat pipe is maintained at certain
Within the scope of.
The present invention discloses the refrigerating method of this 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, bag
Containing following steps:
Step 1), gas working medium is carried out pre-cooling by initially entering one-level regenerator after the first compressor compresses, then passes through one-level
Mozzle enters one-level vascular, and one-level vascular makes quality stream and the pressure wave of gas working medium by one-level air reservoir and one-level inertia tube
Between produce phase contrast to strengthen heat exchange, gas working medium is compressed heat release in the hot junction of one-level vascular, then cold end expand drop
Temperature, produce refrigeration effect, and by one-level heat bridge in the middle part of two grades of regenerators, three grades of regenerator first halves carry out pre-cooling；
Step 2), a part of gas working medium in the second compressor is by by two grades of regenerators after pre-cooling, and massic enthalpy stream reduces,
Then gas working medium enters secondary vein pipe by two grades of mozzles, and secondary vein pipe makes gas by two grades of air reservoirs and two grades of inertia tubes
Between quality stream and the pressure wave of working medium, generation phase contrast is to strengthen heat exchange, and gas working medium is put by compression in the hot junction of secondary vein pipe
Heat, then expands cooling at cold end, produces refrigeration effect, and carries out pre-by two grades of heat bridges to the lower half of three grades of regenerators
Cold；
Step 3), another part gas working medium in the second compressor is by by after three grades of regenerators of pre-cooling, and massic enthalpy stream shows
Write and reduce, thus significantly improve the net refrigerating capacity of tertiary vein Guan Lengduan, reduce zero load cryogenic temperature.
The invention also discloses another kind of 4K thermal coupling low frequency regenerating type low-temperature refrigerator based on controlled heat pipe:
Lead including the first compressor, one-level air reservoir, one-level inertia tube, one-level vascular, one-level regenerator, two grades of regenerators, one-levels
Flow tube, one-level heat bridge, two grades of air reservoirs, two grades of inertia tubes, secondary vein pipe and two grades of mozzles；
Wherein, the first compressor entrance with one-level regenerator and two grades of regenerators respectively is connected；One-level regenerator, one-level are led
Flow tube, one-level vascular, one-level inertia tube, one-level air reservoir order is connected；Two grades of regenerators, two grades of mozzles, secondary vein pipe, two
Level inertia tube, two grades of air reservoir orders are connected；One-level heat bridge wraps in the outlet of one-level regenerator, two grades of regenerators respectively
Portion, carries out thermal coupling connection；
Described first heat bridge (12) uses controlled heat pipe as Heat Conduction Material.
The present invention discloses the refrigeration of above-mentioned 4K thermal coupling low frequency regenerating type low-temperature refrigerator based on controlled heat pipe
Method, comprises the steps of
Step 1), a part of gas working medium in the first compressor initially enters one-level regenerator and carries out pre-cooling, then by one
Level mozzle enters one-level vascular, and one-level vascular makes quality stream and the pressure of gas working medium by one-level air reservoir and one-level inertia tube
Between ripple, generation phase contrast is to strengthen heat exchange, and gas working medium is compressed heat release in the hot junction of one-level vascular, then expands at cold end
Cooling, produces refrigeration effect, and carries out pre-cooling by one-level heat bridge in the middle part of two grades of regenerators；
Step 2), another part gas working medium in the first compressor is by by two grades of regenerators of pre-cooling, and massic enthalpy stream is notable
Reduce, thus significantly improve the net refrigerating capacity of secondary vein Guan Lengduan, reduce zero load cryogenic temperature.
The present invention uses controlled heat pipe to substitute traditional material copper as heat bridge innovatively.For copper heat bridge, can
Control heat pipe has the advantage that
1. inside heat pipe conducts heat mainly by the gas-liquid phase transition of working fluid, and thermal resistance is the least, therefore has the highest capacity of heat transmission, single
Under the quality of position, controlled heat pipe can be than the heat of the copper several order of magnitude of many transmission number；
2. the steam of heat pipe inner chamber is in saturation, and it is the least that saturated vapor flows to pressure drop produced by condensation segment from evaporator section,
Temperature drop is the least, and therefore heat pipe has excellent isothermal；
It is filled with noble gas in the most controlled heat pipe, and connects a gas dome at condensation segment, along with heat pipe internal heating current density
Change, noble gas expands in gas dome or compresses, and changes effective area of dissipation of condensation segment, thus changes condensation segment
Thermal resistance, keep the operating temperature of heat pipe to only have the least change.
Accompanying drawing explanation
Fig. 1 is 4K thermal coupling regenerating type low-temperature refrigerator schematic diagram based on controlled heat pipe；
Fig. 2 is 4K thermal coupling low frequency regenerating type low-temperature refrigerator schematic diagram based on controlled heat pipe；
Fig. 3 is controlled heat pipe schematic diagram；
Fig. 4 is the different cold side pressure of helium-4 working medium than the impact on regenerator regenerative losses of the lower regenerator hot-side temperature；
Fig. 5 is that under unit quality, copper contrasts with heat pipe for thermal conductivity factor v.
In figure, 1-the first compressor, 2-the second compressor, 3-one-level air reservoir, 4-one-level inertia tube, 5-one-level vascular, 6-
One-level regenerator, bis-grades of regenerators of 7-, tri-grades of regenerators of 8-, tri-grades of air reservoirs of 9-, tri-grades of inertia tubes of 10-, 11-one-level mozzle,
12-one-level heat bridge, bis-grades of air reservoirs of 13-, bis-grades of inertia tubes of 14-, 15-secondary vein pipe, 16-tertiary vein pipe, bis-grades of mozzles of 17-,
Bis-grades of heat bridges of 18-, tri-grades of mozzles of 19-.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
As it is shown in figure 1,4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, compress including the first compressor 1, second
Machine 2, one-level air reservoir 3, one-level inertia tube 4, one-level vascular 5, one-level regenerator 7, three grades of regenerators of 6, two grades of regenerators 8, three grades
9, three grades of inertia tubes 10 of air reservoir, one-level mozzle 11, one-level heat bridge 12, two grades of air reservoirs 13, two grades of inertia tubes 14, secondary vein pipes
15,17, two grades of heat bridges 18 of 16, two grades of mozzles of tertiary vein pipe and three grades of mozzles 19；
Wherein, the first compressor 1, one-level regenerator 6, one-level mozzle 11, one-level vascular 5, one-level inertia tube 4, one-level air reservoir 3
Order is connected；Second compressor 2 exports and is connected with 7, three grades of regenerator 8 entrances of two grades of regenerators respectively；Two grades of regenerators
7, two grades of mozzles 17,14, two grades of air reservoir 13 orders of 15, two grades of inertia tubes of secondary vein pipe are connected；Three grades of regenerators 8, three grades
Mozzle 19,10, three grades of air reservoir 9 orders of 16, three grades of inertia tubes of tertiary vein pipe are connected；One-level heat bridge 12 wraps one-level respectively
The outlet of regenerator 6, the middle part of two grades of regenerators 7, the first half of three grades of regenerators 8, carry out thermal coupling connection；Two grades of heat bridges 18
Wrap the outlet of two grades of regenerators 7, the lower half of three grades of regenerators 8 respectively, carry out thermal coupling connection.
Above-mentioned 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, uses controlled heat pipe as one-level heat bridge
12, the Heat Conduction Material of two grades of heat bridges 18, and realize the heat conduction under different warm area by filling different working fluid, by filling out
Inflated with nitrogen realizes the heat conduction under 80K warm area, realizes the heat conduction under 20K warm area by filling hydrogen.
The refrigerating method of above-mentioned 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, comprises the steps of
Step 1), gas working medium initially enters one-level regenerator 6 and carries out pre-cooling, then by one after being compressed by the first compressor 1
Level mozzle 11 enters one-level vascular 5, and one-level vascular 5 makes the quality stream of gas working medium by one-level air reservoir 3 and one-level inertia tube 4
With generation phase contrast is to strengthen heat exchange between pressure wave, gas working medium is compressed heat release in the hot junction of one-level vascular 5, then cold
End expands cooling, produces refrigeration effect, and by one-level heat bridge 12 in the middle part of two grades of regenerators 7, three grades of regenerator 8 first halves enter
Row pre-cooling；
Step 2), a part of gas working medium in the second compressor 2 is by by two grades of regenerators 7 after pre-cooling, and massic enthalpy stream drops
Low, then gas working medium enters secondary vein pipe 15 by two grades of mozzles 17, and secondary vein pipe 15 is by two grades of air reservoirs 13 and two grades
Inertia tube 14 makes to produce between quality stream and the pressure wave of gas working medium phase contrast to strengthen heat exchange, and gas working medium is at secondary vein pipe
Heat release is compressed in the hot junction of 15, then expands cooling at cold end, produces refrigeration effect, and by two grades of heat bridges 18 to three grades of backheats
The lower half of device 8 carries out pre-cooling；
Step 3), another part gas working medium in the second compressor 2 by by after three grades of regenerators 8 of pre-cooling, massic enthalpy stream
Significantly reduce, thus significantly improve the net refrigerating capacity of the cold end of tertiary vein pipe 16, reduce zero load cryogenic temperature.
As in figure 2 it is shown, the invention also discloses another kind of 4K thermal coupling low frequency regenerating type low-temperature system based on controlled heat pipe
Cold, including the first compressor 1, one-level air reservoir 3, one-level inertia tube 4, one-level vascular 5,6, two grades of regenerators 7 of one-level regenerator,
One-level mozzle 11, one-level heat bridge 13, two grades of inertia tubes 14 of 12, two grades of air reservoirs, secondary vein pipe 15 and two grades of mozzles 17；
Wherein, the first compressor 1 entrance with one-level regenerator 6 and two grades of regenerators 7 respectively is connected；One-level regenerator 6, one
Level mozzle 11, one-level vascular 5, one-level inertia tube 4, one-level air reservoir 3 order are connected；7, two grades of mozzles of two grades of regenerators
17,14, two grades of air reservoir 13 orders of 15, two grades of inertia tubes of secondary vein pipe are connected；One-level heat bridge 12 wraps one-level backheat respectively
The outlet of device 6, the middle part of two grades of regenerators 7, carry out thermal coupling connection.
Above-mentioned 4K thermal coupling low frequency regenerating type low-temperature refrigerator based on controlled heat pipe, uses controlled heat pipe as the first heat
The Heat Conduction Material of bridge 12.
Above-mentioned 4K thermal coupling low frequency regenerating type low-temperature refrigerator refrigerating method based on controlled heat pipe, comprises the steps of
Step 1), a part of gas working medium in the first compressor 1 initially enters one-level regenerator 6 and carries out pre-cooling, then passes through
One-level mozzle 11 enters one-level vascular 5, and one-level vascular 5 makes the quality of gas working medium by one-level air reservoir 3 and one-level inertia tube 4
Between stream and pressure wave, generation phase contrast is to strengthen heat exchange, and gas working medium is compressed heat release in the hot junction of one-level vascular 5, then exists
Cold end expands cooling, produces refrigeration effect, and carries out pre-cooling by one-level heat bridge 12 in the middle part of two grades of regenerators；
Step 2), another part gas working medium in the first compressor 1 is by by two grades of regenerators 7 of pre-cooling, and massic enthalpy stream shows
Write and reduce, thus significantly improve the net refrigerating capacity of the cold end of secondary vein pipe 15, reduce zero load cryogenic temperature.
As it is shown on figure 3, the operation principle of controlled heat pipe is: the condensation segment of controlled heat pipe connects gas dome, is wherein filled with
Noble gas.When heat pipe does not works, noble gas uniformly mixes with refrigerant vapor.During heat pipe work, the refrigerant vapor of evaporator section is taken
Band noble gas flows to condensation segment.Refrigerant vapor returns evaporator section by tube core after condensation segment condenses into liquid.Noble gas
Constantly gather at cold end.After a period of time, whole noble gases just accumulate in gas dome and condensation segment, form a vent plug.When
When heat pipe operating temperature increases, inner vapor pressure raises, and compresses vent plug, makes the effective area of dissipation of condensation segment increase, reduce cold
The thermal resistance of solidifying section, increases amount of cooling water, makes the rising of heat pipe operating temperature be inhibited.On the contrary, when heat pipe operating temperature reduces
Then vent plug expands, and increases condensation segment thermal resistance, makes heat pipe operating temperature no longer reduce.So operating temperature of heat pipe just can keep
Within the scope of certain.
As shown in Figure 4, along with the rising of hot-side temperature, the irreversible regenerative losses of regenerator increases, especially when cold side pressure
Ratio is 1.2, and when hot-side temperature is more than 20K, the irreversible regenerative losses of regenerator sharply increases.Therefore, use copper as heat bridge
Time, heat transfer temperature difference is relatively big, and the irreversible regenerative losses causing regenerator is very big, and controlled heat pipe, heat transfer temperature difference is the least, Ke Yiyou
Effect reduces the irreversible regenerative losses of regenerator.
As it is shown in figure 5, along with the rising of temperature, although the heat conductivity of copper increased, but for comparing heat pipe still
The least, from numerically it can be seen that identical temperature, the heat conductivity of heat pipe is thousands of times of copper.Therefore controlled heat pipe is used
Can effectively strengthen heat-transfer capability as heat bridge, reduce the heat transfer temperature difference of cold and hot end, reduce the irreversible regenerative losses of regenerator.
It is understood that unless otherwise defined, all terms used herein (include skill to those skilled in the art of the present technique
Art term and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also
It should be understood that those terms defined in such as general dictionary should be understood that have with in the context of prior art
The consistent meaning of meaning, and unless defined as here, will not explain by idealization or the most formal implication.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not limited to this
Bright, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the present invention
Protection domain within.
Claims (4)
1. 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe, it is characterised in that:
Including the first compressor (1), the second compressor (2), one-level air reservoir (3), one-level inertia tube (4), one-level vascular (5), one
Level regenerator (6), two grades of regenerators (7), three grades of regenerators (8), three grades of air reservoirs (9), three grades of inertia tubes (10), one-level mozzles
(11), one-level heat bridge (12), two grades of air reservoirs (13), two grades of inertia tubes (14), secondary vein pipe (15), tertiary vein pipe (16), two grades
Mozzle (17), two grades of heat bridges (18) and three grades of mozzles (19)；
Wherein, the first compressor (1), one-level regenerator (6), one-level mozzle (11), one-level vascular (5), one-level inertia tube
(4), one-level air reservoir (3) order is connected；Second compressor (2) outlet respectively with two grades of regenerators (7), three grades of regenerators (8)
Entrance is connected；Two grades of regenerators (7), two grades of mozzles (17), secondary vein pipe (15), two grades of inertia tubes (14), two grades of air reservoirs
(13) order is connected；Three grades of regenerators (8), three grades of mozzles (19), tertiary vein pipe (16), three grades of inertia tubes (10), three grades
Air reservoir (9) order is connected；One-level heat bridge (12) wraps in the outlet of one-level regenerator (6), two grades of regenerators (7) respectively
Portion, the first half of three grades of regenerators (8), carry out thermal coupling connection；Two grades of heat bridges (18) wrap two grades of regenerators (7) respectively
Outlet, the lower half of three grades of regenerators (8), carry out thermal coupling connection；
Described one-level heat bridge (12), two grades of heat bridges (18) all use controlled heat pipe as Heat Conduction Material.
2. refrigerating method based on the 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe described in claim 1, its
It is characterised by, comprises the steps of
Step 1), gas working medium initially enters one-level regenerator (6) after being compressed by the first compressor (1) and carries out pre-cooling, then leads to
Crossing one-level mozzle (11) and enter one-level vascular (5), one-level vascular (5) makes gas by one-level air reservoir (3) and one-level inertia tube (4)
Between quality stream and the pressure wave of body working medium, generation phase contrast is to strengthen heat exchange, and gas working medium is at the hot junction quilt of one-level vascular (5)
Compression heat release, then expands cooling at cold end, produces refrigeration effect, and by one-level heat bridge (12) in two grades of regenerators (7)
Portion, three grades of regenerator (8) first halves carry out pre-cooling；
Step 2), a part of gas working medium in the second compressor (2) is by by two grades of regenerators (7) after pre-cooling, massic enthalpy
Stream reduces, and then gas working medium enters secondary vein pipe (15) by two grades of mozzles (17), and secondary vein pipe (15) passes through two grades of gas
Storehouse (13) and two grades of inertia tubes (14) make to produce phase contrast to strengthen heat exchange, gas between quality stream and the pressure wave of gas working medium
Working medium is compressed heat release in the hot junction of secondary vein pipe (15), then expands cooling at cold end, produces refrigeration effect, and by two grades
Heat bridge (18) carries out pre-cooling to the lower half of three grades of regenerators (8)；
Step 3), another part gas working medium in the second compressor (2) by by after three grades of regenerators (8) of pre-cooling, quality
Enthalpy stream significantly reduces, thus significantly improves the net refrigerating capacity of tertiary vein pipe (16) cold end, reduces zero load cryogenic temperature.
3. 4K thermal coupling low frequency regenerating type low-temperature refrigerator based on controlled heat pipe, it is characterised in that:
Including the first compressor (1), one-level air reservoir (3), one-level inertia tube (4), one-level vascular (5), one-level regenerator (6), two
Level regenerator (7), one-level mozzle (11), one-level heat bridge (12), two grades of air reservoirs (13), two grades of inertia tubes (14), secondary vein pipes
(15) and two grades of mozzles (17)；
Wherein, the first compressor (1) entrance with one-level regenerator (6) and two grades of regenerators (7) respectively is connected；One-level backheat
Device (6), one-level mozzle (11), one-level vascular (5), one-level inertia tube (4), one-level air reservoir (3) order is connected；Two grades of backheats
Device (7), two grades of mozzles (17), secondary vein pipe (15), two grades of inertia tubes (14), two grades of air reservoir (13) orders are connected；One-level
Heat bridge (12) wraps the outlet of one-level regenerator (6), the middle part of two grades of regenerators (7) respectively, carries out thermal coupling connection；
Described one-level heat bridge (12) uses controlled heat pipe as Heat Conduction Material.
4. refrigeration side based on the 4K thermal coupling low frequency regenerating type low-temperature refrigerator based on controlled heat pipe described in claim 3
Method, it is characterised in that comprise the steps of
Step 1), a part of gas working medium in the first compressor (1) initially enters one-level regenerator (6) and carries out pre-cooling, then
Entering one-level vascular (5) by one-level mozzle (11), one-level vascular (5) is made with one-level inertia tube (4) by one-level air reservoir (3)
Between quality stream and the pressure wave of gas working medium, generation phase contrast is to strengthen heat exchange, and gas working medium is in the hot junction of one-level vascular (5)
By compression heat release, then cold end expand cooling, produce refrigeration effect, and by one-level heat bridge (12) to two grades of regenerators in the middle part of
Carry out pre-cooling；
Step 2), another part gas working medium in the first compressor (1) is by by two grades of regenerators (7) of pre-cooling, massic enthalpy
Stream significantly reduces, thus significantly improves the net refrigerating capacity of secondary vein pipe (15) cold end, reduces zero load cryogenic temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016103011651 | 2016-05-09 | ||
| CN201610301165 | 2016-05-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617650A (en) * | 2018-06-19 | 2019-12-27 | 牛津仪器纳米技术工具有限公司 | Cryogenic cooling system |
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| CN110617650A (en) * | 2018-06-19 | 2019-12-27 | 牛津仪器纳米技术工具有限公司 | Cryogenic cooling system |
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| CN111386012A (en) * | 2020-02-28 | 2020-07-07 | 北京空间飞行器总体设计部 | Radiator with variable heat dissipation capacity suitable for near space |
| CN114151988A (en) * | 2021-11-30 | 2022-03-08 | 北京空间机电研究所 | Refrigerator system suitable for 20K temperature zone of infrared camera of space astronomical telescope |
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