CN114396737B - Stirling pulse tube compound refrigerator with low-temperature piston actively modulating phase - Google Patents
Stirling pulse tube compound refrigerator with low-temperature piston actively modulating phase Download PDFInfo
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- CN114396737B CN114396737B CN202210123385.5A CN202210123385A CN114396737B CN 114396737 B CN114396737 B CN 114396737B CN 202210123385 A CN202210123385 A CN 202210123385A CN 114396737 B CN114396737 B CN 114396737B
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000002792 vascular Effects 0.000 description 13
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F25B39/00—Evaporators; Condensers
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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
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
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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
- F25B9/145—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 pulse-tube cycle
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a Stirling pulse tube compound refrigerator with a low-temperature piston for active phase modulation, which is a high-temperature Stirling low-temperature pulse tube compound refrigerator based on low-temperature piston phase modulation, wherein a Stirling cold finger is adopted at a high temperature stage, a motor-driven piston is adopted as an active phase modulation structure for a low-temperature pulse tube, and therefore, better phase distribution can be formed in a regenerator of the low-temperature pulse tube, and the efficiency of the refrigerator is improved. Meanwhile, the variable load demands of the high-temperature area and the low-temperature area for the variable cooling capacity of the variable temperature area can be realized through the adjustment of the motion phase and the amplitude of the high-temperature Stirling ejector and the low-temperature pulse tube phase modulation compressor. The high-temperature-stage Stirling low-temperature-stage pulse tube compound refrigerator based on low-temperature piston phase modulation solves the problems of poor reliability of multi-stage Stirling and low efficiency of the multi-stage pulse tube refrigerator, has the advantages of high efficiency and long service life, and can provide refrigeration requirements of various cold distribution in variable temperature areas.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to a high-temperature Stirling low-temperature-stage pulse tube compound refrigerator based on low-temperature piston phase modulation.
Background
The rapid development of space exploration technology has prompted the development of regenerative cryocoolers for space. The commonly used space regenerative refrigerators are Stirling refrigerators and pulse tube refrigerators, and the two regenerative refrigerators are mature in technology in the temperature region above 40K and have been widely used for space exploration. And below the 40K temperature area, the regenerative refrigerator adopts a multi-stage structure. The multi-stage Stirling refrigerator has higher efficiency, but the lengths of the ejectors and the cylinders of the multi-stage Stirling refrigerator are long, coaxiality between the ejectors and the cylinders is difficult to maintain, the Stirling refrigerator is easy to wear, even the Stirling refrigerator is blocked, and the reliability is low. The multistage pulse tube refrigerator has the advantage of high reliability due to the structural characteristic that the cold end has no moving parts. However, the acoustic power at the hot end of the pulse tube refrigerator is dissipated in a thermal form and is not recovered, so that the defect of low intrinsic efficiency is overcome; and the traditional small hole type and gas reservoir inertia tube type equal phase modulation structure is difficult to enable the low-temperature-stage heat regenerator to achieve good phase relation, so that the efficiency of the multi-stage pulse tube refrigerator is further reduced and is far lower than that of the multi-stage Stirling refrigerator. The existing multistage Stirling and multistage pulse tube refrigeration technology cannot meet the aerospace application requirements of high efficiency and high reliability at the same time.
Disclosure of Invention
The invention aims to solve the technical problem of realizing high-efficiency and high-reliability two-stage refrigeration at the same time, and provides a Stirling pulse tube compound refrigerator based on active phase modulation of a low-temperature piston.
The technical scheme provided by the invention is as follows: a high-temperature Stirling low-temperature-stage pulse tube compound refrigerator based on low-temperature piston phase modulation comprises a main compressor, a connecting tube, a high-temperature-stage Stirling cold finger, a low-temperature-stage pulse tube cold finger, a phase modulation connecting tube and a low-temperature-stage phase modulation compressor. The main compressor is connected with the high-temperature Stirling cold finger through a connecting pipe, the high-temperature Stirling cold finger is arranged at the front end of the low-temperature pulse tube cold finger, the low-temperature pulse tube cold finger is connected with the phase modulation compressor through a phase modulation connecting pipe, and the phase modulation compressor is connected with the cold end of the high-temperature Stirling cold finger through a phase modulation compressor heat bridge.
The main compressor is an opposite double-piston compressor, pistons at two sides of the main compressor are supported by plate springs and driven by a linear motor to perform reciprocating linear motion, so that gas in a compression cavity generates pressure fluctuation, and a displacement sensor is fixedly connected with one side of the piston to obtain the displacement of the piston of the main compressor in real time.
The high-temperature Stirling cold finger can be an internal heat regenerator type high-temperature Stirling cold finger or an external heat regenerator type high-temperature Stirling cold finger. Taking a cold finger of a built-in heat regenerator type high-temperature Stirling, the device comprises a high-temperature Stirling linear motor, a high-temperature Stirling plate spring, a pushing rod sealing piece, a pushing rod, a high-temperature Stirling hot end heat exchanger, an ejector, a high-temperature built-in heat regenerator, a high-temperature Stirling cold end heat exchanger and a high-temperature ejector displacement sensor, wherein the ejector is fixedly connected with the pushing rod, the pushing rod is supported by the high-temperature Stirling plate spring and driven by the high-temperature Stirling linear motor, the pushing rod drives the ejector to perform linear reciprocating motion in an expansion cylinder, and the pushing rod is fixedly connected with the displacement sensor to obtain the displacement of the ejector in real time. The pushing rod sealing piece is fixedly connected with the expansion cylinder coaxially, a high-temperature Stirling cold end heat exchanger is arranged at the hot end of the expansion cylinder, and a high-temperature Stirling cold end heat exchanger is arranged at the cold end. The high-temperature-stage heat regenerator of the internal heat regenerator type high-temperature-stage Stirling cold finger is arranged in the ejector, and the high-temperature-stage heat regenerator of the external heat regenerator type high-temperature-stage Stirling cold finger is arranged outside the ejector.
The low-temperature-level vascular cold finger can be a linear low-temperature-level vascular cold finger or a U-shaped low-temperature-level vascular cold finger or a coaxial low-temperature-level vascular cold finger. Taking a linear low-temperature-level pulse tube cold finger as an example, the cold finger comprises a low-temperature-level heat regenerator hot end heat exchanger, a low-temperature-level heat regenerator, a low-temperature-level cold end heat exchanger, a pulse tube hot end heat exchanger and a low-temperature-level pulse tube cold finger cold and hot end heat bridge. The heat regenerator hot end heat exchanger is a high-temperature Stirling cold end heat exchanger. For the linear low-temperature-level pulse tube cold finger, the low-temperature-level heat regenerator and the pulse tube are arranged in a straight line, and the hot end heat exchanger of the low-temperature-level heat regenerator is connected with the hot end heat exchanger of the pulse tube through the cold end heat bridge of the low-temperature-level pulse tube cold finger. For the U-shaped low-temperature-level pulse tube cold finger, the low-temperature-level heat regenerator is arranged in a U shape with the pulse tube, and the hot end heat exchanger of the low-temperature-level heat regenerator is connected with the hot end heat exchanger of the pulse tube through a cold-hot end heat bridge of the low-temperature-level pulse tube cold finger. For the coaxial low-temperature-level pulse tube cold finger, a pulse tube is arranged inside the low-temperature-level heat regenerator, and the low-temperature-level heat regenerator hot end heat exchanger is tightly matched with the built-in pulse tube hot end heat exchanger to realize good thermal contact.
The phase modulation compressor is an opposite double-piston compressor, pistons at two sides of the phase modulation compressor are supported by plate springs and driven by a linear motor to perform reciprocating linear motion, the compression cavity is connected with cold fingers of low-temperature-stage pulse tubes through phase modulation connecting tubes, and a displacement sensor is fixedly connected with one-side pistons to obtain displacement of the phase modulation pistons in real time.
Compared with the prior art, the invention has the beneficial effects that:
The low-temperature piston Stirling/pulse tube composite refrigerator based on the invention adopts reliable Stirling cold finger at a high temperature level, plays the advantages of active phase modulation and work recovery of the ejector, has higher efficiency, adopts a motor-driven piston as an active phase modulation structure at a low-temperature pulse tube, and generates better acoustic impedance relation in a core part regenerator of the low-temperature pulse tube compared with the traditional phase modulation structure (a small hole type and an inertia tube air reservoir type), thereby forming better phase distribution and further improving the efficiency of the refrigerator. The invention can realize the variable load demand of the high temperature area and the low temperature area for the variable cooling capacity of the variable temperature area through the adjustment of the motion phase and the amplitude of the high temperature Stirling discharger and the low temperature vascular phase modulation compressor. The high-temperature-stage Stirling low-temperature-stage pulse tube compound refrigerator based on low-temperature piston phase modulation has the refrigeration efficiency equivalent to that of a two-stage Stirling refrigerator, simultaneously avoids the reliability problem caused by longer moving parts of the two-stage Stirling, has the advantages of high efficiency and long service life, and can provide refrigeration requirements of various cold distribution in variable temperature areas in different temperature areas.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a primary compressor configuration;
FIG. 3 is a high temperature stage Stirling cold finger with a built-in regenerator;
FIG. 4 is an external regenerator type high temperature stage Stirling cold finger;
FIG. 5 is a straight low temperature grade vascular cold finger;
FIG. 6 is a U-shaped cryogenic grade vessel cold finger;
FIG. 7 is a coaxial low temperature grade vascular cold finger;
fig. 8 is a phase modulated compressor.
In the figure: 1. a main compressor; 1-1, a main compressor piston; 1-2, a main compressor leaf spring; 1-3, a main compressor linear motor; 1-4, a main compressor compression chamber; 1-5, a main compressor displacement sensor; 2. a connecting pipe; 3. high temperature grade Stirling cold finger; 3-1 high temperature Stirling linear motor; 3-2, a high temperature grade Stirling leaf spring; 3-3, pushing the rod sealing member; 3-4, pushing the rod; 3-5, a high-temperature Stirling hot end heat exchanger; 3-6, an ejector; 3-7, a high-temperature-stage heat regenerator; 3-8, a high-temperature Stirling cold end heat exchanger; 3-9, a displacement sensor of the high-temperature-stage ejector; 3-10, an expansion cylinder; 4. low-temperature-level vascular cold finger; 4-1, a hot end heat exchanger of the low-temperature-level heat regenerator; 4-2, a low-temperature-stage heat regenerator; 4-3, a low-temperature-stage cold end heat exchanger; 4-4, vascular; 4-5, a pulse tube hot end heat exchanger; 4-6, cold finger cold and hot end heat bridge of low-temperature level vessel; 5. phase modulation connecting pipe; 6. a low temperature-stage phase modulation compressor; 6-1, phasing a compressor piston; 6-2, phase modulation compressor plate springs, 6-3, phase modulation compressor linear motors; 6-4, compressing cavity of phase modulation compressor; 6-5, a phase modulation compressor displacement sensor; 7. phase modulation compressor thermal bridge.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-8, the present embodiment discloses a low-temperature-stage pulse tube compound refrigerator of a high-temperature-stage stirling based on low-temperature piston phase modulation, as shown in fig. 1, a low-temperature-stage pulse tube compound refrigerator of a high-temperature-stage stirling based on low-temperature piston phase modulation, which comprises a main compressor, a connecting tube, a high-temperature-stage stirling cold finger, a low-temperature-stage pulse tube cold finger, a phase modulation connecting tube and a low-temperature-stage phase modulation compressor. The main compressor is connected with the high-temperature Stirling cold finger through a connecting pipe, the high-temperature Stirling cold finger is arranged at the front end of the low-temperature pulse tube cold finger, the low-temperature pulse tube cold finger is connected with the phase modulation compressor through a phase modulation connecting pipe, and the phase modulation compressor is connected with the cold end of the high-temperature Stirling cold finger through a phase modulation compressor heat bridge.
As shown in fig. 2, the main compressor is an opposite double-piston compressor, pistons at two sides of the main compressor are supported by plate springs and driven by a linear motor to perform reciprocating linear motion, so that gas in a compression cavity generates pressure fluctuation, and a displacement sensor is fixedly connected with one-side piston to obtain the displacement of the piston of the main compressor in real time.
The high-temperature Stirling cold finger can be an internal heat regenerator type high-temperature Stirling cold finger or an external heat regenerator type high-temperature Stirling cold finger. Taking a cold finger of a high-temperature-stage Stirling with a built-in heat regenerator as an example, as shown in fig. 3, the cold finger comprises a high-temperature-stage Stirling linear motor, a high-temperature-stage Stirling plate spring, a pushing rod sealing piece, a pushing rod, a high-temperature-stage Stirling hot end heat exchanger, an ejector, a high-temperature-stage built-in heat regenerator, a high-temperature-stage Stirling cold end heat exchanger and a high-temperature-stage ejector displacement sensor, wherein the ejector is fixedly connected with the pushing rod, the pushing rod is supported by the high-temperature-stage Stirling plate spring and driven by the high-temperature-stage Stirling linear motor, the pushing rod drives the ejector to perform linear reciprocating motion in an expansion cylinder, and the pushing rod is fixedly connected with the displacement sensor to obtain the displacement of the ejector in real time. The pushing rod sealing piece is fixedly connected with the expansion cylinder coaxially, a high-temperature Stirling cold end heat exchanger is arranged at the hot end of the expansion cylinder, and a high-temperature Stirling cold end heat exchanger is arranged at the cold end. The high-temperature-stage regenerator with the built-in regenerator type high-temperature-stage Stirling cold finger is arranged in the ejector. As shown in fig. 4, the external regenerator type high temperature stage regenerator of the high temperature stage stirling cold finger is outside the ejector.
The low-temperature-level vascular cold finger can be a linear low-temperature-level vascular cold finger or a U-shaped low-temperature-level vascular cold finger or a coaxial low-temperature-level vascular cold finger. As shown in fig. 5, taking a linear low-temperature-stage pulse tube cold finger as an example, the pulse tube cold finger comprises a low-temperature-stage regenerator hot end heat exchanger, a low-temperature-stage regenerator, a low-temperature-stage cold end heat exchanger, a pulse tube hot end heat exchanger and a low-temperature-stage pulse tube cold finger cold and hot end heat bridge. The heat regenerator hot end heat exchanger is a high-temperature Stirling cold end heat exchanger. The low-temperature-level heat regenerator and the pulse tube are arranged in a straight line, and the hot end heat exchanger of the low-temperature-level heat regenerator is connected with the hot end heat exchanger of the pulse tube through a cold-hot end heat bridge of the low-temperature-level pulse tube. As shown in fig. 6, the low-temperature-stage pulse tube cold finger is arranged in a U shape, and the hot end heat exchanger of the low-temperature-stage heat regenerator is connected with the hot end heat exchanger of the pulse tube through the cold-end heat bridge of the low-temperature-stage pulse tube cold finger. As shown in fig. 7, the coaxial low-temperature-stage pulse tube cold finger has the pulse tube arranged inside the low-temperature-stage heat regenerator, and the low-temperature-stage heat regenerator hot end heat exchanger is in close fit with the built-in pulse tube hot end heat exchanger to realize good thermal contact without a heat bridge.
As shown in figure 8, the phase modulation compressor is an opposite double-piston compressor, pistons at two sides of the phase modulation compressor are supported by plate springs and driven by a linear motor to perform reciprocating linear motion, a compression cavity is connected with cold fingers of a low-temperature-stage pulse tube through a phase modulation connecting tube, and a piston at one side is fixedly connected with a displacement sensor to obtain the displacement of the phase modulation piston in real time.
The refrigerator operation process of this structure is, and main compressor both sides piston is reciprocating motion under the drive of main compressor linear electric motor for the gas takes place periodic compression process and expansion process in the main compressor cylinder, and gaseous micelle concussion produces the sound wave. The heat of the cold end heat exchanger of the low-temperature-level pulse tube cold finger is transferred to the hot end heat exchanger of the low-temperature-level pulse tube cold finger, namely the cold end heat exchanger of the high-temperature-level Stirling cold finger, and the heat of the cold end heat exchanger of the high-temperature-level Stirling cold finger is transferred to the hot end heat exchanger of the high-temperature-level Stirling cold finger and finally released to the environment. The ejector of the high-temperature Stirling cold finger and the piston driven by the low-temperature motor respectively perform active phase adjustment of the high-temperature Stirling cold finger and the low-temperature pulse tube cold finger, and simultaneously provide better phase distribution for the high-temperature Stirling and low-temperature pulse tubes of the Stirling pulse tube compound refrigerator, so that the high-temperature stage and the low-temperature stage are in better working states, and finally higher refrigeration efficiency is obtained.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (4)
1. A Stirling pulse tube compound refrigerator with a low-temperature piston actively phase-modulated comprises a main compressor (1), a connecting tube (2), a high-temperature Stirling cold finger (3), a low-temperature pulse tube cold finger (4), a phase-modulated connecting tube (5), a phase-modulated compressor (6) and a phase-modulated compressor thermal bridge (7); the high-temperature-stage Stirling cold finger (3) is connected with the high-temperature-stage Stirling cold finger (3) through a connecting pipe (2), the high-temperature-stage Stirling cold finger (3) is arranged at the front end of the low-temperature-stage pulse tube cold finger (4), the low-temperature-stage pulse tube cold finger (4) is connected with the phase modulation compressor (6) through the phase modulation connecting pipe (5), the phase modulation compressor (6) is connected with the cold end heat exchanger of the high-temperature-stage Stirling cold finger (3) through the phase modulation compressor thermal bridge (7), the main compressor (1) is an opposite double-piston compressor, main compressor pistons (1-1) at two sides of the main compressor are supported by main compressor plate springs (1-2) and driven by a main compressor linear motor (1-3) to perform reciprocating linear motion, so that pressure fluctuation is generated in gas in a main compressor compression cavity (1-4), and the main compressor piston (1-1) at one side is fixedly connected with a main compressor displacement sensor (1-5) to obtain the displacement of the main compressor piston (1-1).
2. The Stirling pulse tube compound refrigerator with the low-temperature piston actively phase modulation according to claim 1, wherein the high-temperature Stirling cold finger (3) is an internal heat regenerator type high-temperature Stirling finger or an external heat regenerator type high-temperature Stirling finger, and comprises a high-temperature Stirling linear motor (3-1), a high-temperature Stirling plate spring (3-2), a pushing rod sealing member (3-3), a pushing rod (3-4), a high-temperature Stirling hot end heat exchanger (3-5), an ejector (3-6), a high-temperature Stirling heat regenerator (3-7), a high-temperature Stirling cold end heat exchanger (3-8) and a displacement sensor (3-9), wherein the ejector (3-6) is fixedly connected with the pushing rod (3-4), the pushing rod (3-4) is supported by the high-temperature Stirling plate spring (3-2), the pushing rod sealing member (3-3), the ejector (3-4) is driven by the pushing rod (3-6) to reciprocate in an expansion cylinder (3-10), and the pushing rod (3-4) is fixedly connected with the displacement sensor (3-9) to obtain the displacement of the displacement sensor (3-6; the pushing rod sealing piece (3-3) is fixedly connected with the expansion cylinder (3-10) in a coaxial mode, a high-temperature Stirling hot end heat exchanger (3-5) is arranged at the hot end of the expansion cylinder (3-10), a high-temperature Stirling cold end heat exchanger (3-8) is arranged at the cold end, if a built-in heat regenerator type high-temperature Stirling cold finger is adopted, the high-temperature heat regenerator (3-7) is arranged in the ejector (3-6), and if an external heat regenerator type high-temperature Stirling cold finger is adopted, the high-temperature heat regenerator (3-7) is arranged outside the ejector (3-6).
3. The Stirling pulse tube compound refrigerator with the active phase modulation of the low-temperature piston according to claim 1, wherein the low-temperature pulse tube cold finger (4) is a linear low-temperature pulse tube cold finger or a U-shaped low-temperature pulse tube cold finger or a coaxial low-temperature pulse tube cold finger, and comprises a low-temperature heat regenerator hot end heat exchanger (4-1), a low-temperature heat regenerator (4-2), a low-temperature cold end heat exchanger (4-3), a pulse tube (4-4), a pulse tube hot end heat exchanger (4-5) and a low-temperature pulse tube cold finger cold-hot end heat bridge (4-6); the low-temperature-level heat regenerator hot end heat exchanger (4-1) is a high-temperature-level Stirling cold end heat exchanger (3-8); if a linear low-temperature-level pulse tube cold finger is adopted, the low-temperature-level heat regenerator (4-2) and the pulse tube (4-4) are arranged in a straight line, and a hot end heat exchanger (4-1) of the low-temperature-level heat regenerator is connected with a hot end heat exchanger (4-5) of the pulse tube through a cold-finger cold-hot end heat bridge (4-6) of the low-temperature-level pulse tube; if a U-shaped low-temperature-level pulse tube cold finger is adopted, a low-temperature-level heat regenerator (4-2) and a pulse tube (4-4) are arranged in a U shape, and a low-temperature-level heat regenerator hot end heat exchanger (4-1) is connected with a pulse tube hot end heat exchanger (4-5) through a low-temperature-level pulse tube cold finger cold-hot end heat bridge (4-6); if the coaxial low-temperature-level pulse tube cold finger is adopted, the pulse tube (4-4) is arranged inside the low-temperature-level heat regenerator (4-2), and the low-temperature-level heat regenerator hot end heat exchanger (4-1) is tightly matched with the built-in pulse tube hot end heat exchanger (4-5) to realize good thermal contact without a heat bridge.
4. The Stirling pulse tube compound refrigerator with active phase modulation of low-temperature piston according to claim 1, wherein the phase modulation compressor (6) is an opposite double-piston compressor, the phase modulation compressor pistons (6-1) at two sides of the opposite double-piston compressor are supported by phase modulation compressor plate springs (6-2) and driven by a phase modulation compressor linear motor (6-3) to perform reciprocating linear motion, a phase modulation compressor compression cavity (6-4) is connected with a low-temperature pulse tube cold finger through a phase modulation connecting tube, and a phase modulation compressor displacement sensor (6-5) is fixedly connected with the phase modulation compressor piston (6-1) at one side to obtain the displacement of the phase modulation compressor piston (6-1) in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021103925339 | 2021-04-13 | ||
| CN202110392533.9A CN113074469A (en) | 2021-04-13 | 2021-04-13 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
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| Publication Number | Publication Date |
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| CN114396737A CN114396737A (en) | 2022-04-26 |
| CN114396737B true CN114396737B (en) | 2024-06-18 |
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| CN202110392533.9A Pending CN113074469A (en) | 2021-04-13 | 2021-04-13 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
| CN202220266899.1U Withdrawn - After Issue CN217441997U (en) | 2021-04-13 | 2022-02-10 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
| CN202210123385.5A Active CN114396737B (en) | 2021-04-13 | 2022-02-10 | Stirling pulse tube compound refrigerator with low-temperature piston actively modulating phase |
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| CN202110392533.9A Pending CN113074469A (en) | 2021-04-13 | 2021-04-13 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
| CN202220266899.1U Withdrawn - After Issue CN217441997U (en) | 2021-04-13 | 2022-02-10 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
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| CN113074469A (en) * | 2021-04-13 | 2021-07-06 | 中国科学院上海技术物理研究所 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
| CN114576878A (en) * | 2022-02-28 | 2022-06-03 | 武汉高芯科技有限公司 | Double-cold-head high-power-weight-ratio linear low-temperature mechanical refrigerator |
| CN114838516B (en) * | 2022-04-29 | 2023-10-27 | 太原理工大学 | Deep low temperature area multistage mixed structure refrigerator adopting low temperature expansion piston coupling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353287A (en) * | 2001-11-29 | 2002-06-12 | 上海交通大学 | Split-type gas driven stirling-pulse tube coupled refrigerator |
| CN217441997U (en) * | 2021-04-13 | 2022-09-16 | 中国科学院上海技术物理研究所 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603743B (en) * | 2009-06-29 | 2012-07-11 | 浙江大学 | Acoustic Power Amplifier and Pulse Tube Refrigerator for Inertial Tube Phase Modulation |
| CN103808056B (en) * | 2014-01-23 | 2015-11-18 | 浙江大学 | The vascular of recovery sound merit and the compound Cryo Refrigerator of J-T throttling |
| CN209445628U (en) * | 2019-01-10 | 2019-09-27 | 中国科学院上海技术物理研究所 | A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system |
-
2021
- 2021-04-13 CN CN202110392533.9A patent/CN113074469A/en active Pending
-
2022
- 2022-02-10 CN CN202220266899.1U patent/CN217441997U/en not_active Withdrawn - After Issue
- 2022-02-10 CN CN202210123385.5A patent/CN114396737B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353287A (en) * | 2001-11-29 | 2002-06-12 | 上海交通大学 | Split-type gas driven stirling-pulse tube coupled refrigerator |
| CN217441997U (en) * | 2021-04-13 | 2022-09-16 | 中国科学院上海技术物理研究所 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114396737A (en) | 2022-04-26 |
| CN113074469A (en) | 2021-07-06 |
| CN217441997U (en) | 2022-09-16 |
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