JP3116635B2 - Resonant tube refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Object of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resonance tube refrigerator.

[0003]

2. Description of the Related Art Conventionally, a resonance tube refrigerator of this type is known, for example, from US Pat. No. 4,858,441. This is one in which the motor unit and the refrigerator unit are arranged at one end of the resonance tube with respect to a portion where the pressure in the resonance tube does not fluctuate (that is, a node of the pressure fluctuation of the standing wave). The motor unit has a high-temperature heat exchanger, a high-temperature stack, and a room-temperature heat exchanger that are arranged in order from one end of the resonance tube. Then, the working fluid sealed in the resonance tube is vibrated.

The refrigerating machine section has a room temperature side heat exchanger, a low temperature stack, and a low temperature side heat exchanger arranged in this order from the room temperature side heat exchanger side of the motor section. Causes refrigeration on the low temperature side.

[0005]

In the above-mentioned resonance tube refrigerator, it is necessary to bring the low-temperature side heat exchanger into contact with the object to be cooled in order to absorb heat from the object to be cooled. The cooling device is disposed closer to the prime mover than the portion of the resonance tube where pressure fluctuation does not occur, and is located substantially at the center of the refrigerator. Further, since the motor unit and the refrigerator unit are substantially in contact with each other, the refrigerator unit may thermally interfere with the motor unit.

[0006] Therefore, an object of the present invention is to increase the degree of freedom in mounting a cooled object.

[0007]

Configuration of the Invention

[0008]

Means for Solving the Problems The technical means (first technical means) taken in the invention of claim 1 for solving the above technical problem is a high-temperature means arranged in order from one end side of the resonance tube. A motor unit having a side heat exchanger, a high temperature stack and a room temperature side heat exchanger, which absorbs heat from the outside on the high temperature side and emits heat on the room temperature side to vibrate the working fluid sealed in the resonance tube; and A refrigerating unit having a room temperature side heat exchanger, a low temperature stack and a low temperature side heat exchanger arranged in order from the other end of the resonance tube, and generating refrigeration on the low temperature side by vibration of a working fluid. It is a resonance tube refrigerator in which the resonance tube is bent so that the low-temperature side heat exchanger is located at an end of the resonance tube refrigerator.

[0009] To solve the above technical problem, a second aspect is provided.
Technical measures taken in the invention of the above (second technical means)
The inner tube is located at one end of the resonance tube than the euphem, and the outer tube is located around the inner tube at the other end of the resonance tube than the eaves. And the room-temperature-side heat exchanger and the low-temperature stack are arranged in the outer tube portion.

[0010]

According to the first technical means, since the low-temperature side heat exchanger is located at the end of the resonance tube refrigerator, the degree of freedom in mounting the object to be cooled is increased. In addition, since the prime mover section is provided at one end of the resonance tube and the refrigerator section is provided at the other end side, the distance between the prime mover section and the refrigerator section is sufficiently long, and the refrigerator section is thermally connected to the prime mover section. Interference is prevented.

[0011] According to the second technical means, since the resonance tube has a double tube structure, the whole refrigerator is made compact.

[0012]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of a resonance tube refrigerator according to this embodiment.

A resonance tube refrigerator 10 shown in FIG. 1 has a resonance tube 11 having a cylindrical shape.
Reference numerals 2 and 13 are closed ends. A working fluid such as helium is sealed in the resonance tube 11. A motor unit 14 is provided on one end 12 side of the resonance tube 11, and a refrigerator unit 20 is provided on the other end 13 side. A first working space 18 is formed between the prime mover unit 14 and the one end 12 of the resonance tube 11, and a second working space 19 is formed between the prime mover unit 14 and the refrigerator unit 20. A third working space 25 is provided between the mechanical unit 20 and the other end 13 of the resonance tube 11.
Are formed.

The motor unit 14 has a high-temperature side heat exchanger 15, a high-temperature stack 16, and a room-temperature side heat exchanger 17.
The high temperature side heat exchanger 15 is arranged facing the first working space 18. A high-temperature stack 16 is arranged adjacent to the lower surface of the high-temperature side heat exchanger 15, and a plurality of plates 16 a are formed in the high-temperature stack 16 in parallel with each other in the longitudinal direction of the resonance tube 11. High temperature stack 1
A room temperature side heat exchanger 17 is disposed adjacent to the lower surface of the heat exchanger 6. Accordingly, when the working fluid in the high-temperature side heat exchanger 15 absorbs heat from a high-temperature heat source (not shown), the heat is transferred to the room-temperature side heat exchanger 17 via the high-temperature stack 16 and one of the heat is transferred. The part is discharged outside in the room-temperature side heat exchanger 17, and the remainder is converted into work. Due to the work, the working fluid in the resonance tube 11 moves in the longitudinal direction and vibrates, and the pressure in the resonance tube 11 fluctuates.

The refrigerator section 20 is disposed on the other end 13 side of the resonance tube 11 from a portion where the pressure in the resonance tube 11 does not fluctuate, and includes a room temperature side heat exchanger 21 and a low temperature stack 22.
And a low-temperature side heat exchanger 23. The resonance tube 11
The low-temperature side heat exchanger 23 is bent to be located at the lower end in the drawing of the resonance tube refrigerator 10, and the lower surface of the low-temperature side heat exchanger 23 is a flat surface. A body to be cooled (not shown) is connected to a lower surface of the low-temperature side heat exchanger 23.

The resonance tube 11 has a resonance tube 1
1 has an inner tube portion 11a located on one end portion 12 side and an outer tube portion 11b located on a portion of the inner tube portion 11a located on the other end portion 13 side of the resonance tube 11 with respect to the euploid portion. doing. That is, the resonance tube 11 has a double tube structure.
A room-temperature-side heat exchanger 21 and a low-temperature stack 22 are arranged in the outer tube portion 11b in this order from the other end portion 13 of the resonance tube 11 so that the low-temperature stack 22 is adjacent to the room-temperature-side heat exchanger 21. Has become. The room temperature side heat exchanger 21 is the third
It faces the working space 25. In the low temperature stack 22,
A plurality of plates 22a are formed parallel to each other in the longitudinal direction of the resonance tube 11. The low-temperature stack 22 is adjacent to the low-temperature side heat exchanger 23 via a slit 24 formed in the low-temperature side heat exchanger 23 (see FIG. 2). Therefore, due to the vibration of the working fluid generated by the motor unit 14, the working fluid in the low-temperature side heat exchanger 23 is absorbed from the cooled body and cools the cooled body, and the heat is transmitted through the slit 24 and the low-temperature stack 22. The heat is transferred to the room temperature side heat exchanger 21 and the heat is released to the outside in the room temperature side heat exchanger 21.

The operation of the resonance tube refrigerator 10 configured as described above will be described.

When the working fluid absorbs heat from the outside in the high-temperature side heat exchanger 15, a part of the heat is transported to the room-temperature side heat exchanger 17 via the high-temperature stack 16 and is transferred to the room-temperature side heat exchanger 17. Released to the outside. As a result, the working gas performs work, thereby causing a pressure fluctuation in the resonance tube 11 and oscillating the working fluid in the resonance tube 11. Due to the vibration of the working fluid, the working fluid in the low-temperature side heat exchanger 23 absorbs heat from the cooled portion and cools the cooled portion. The absorbed heat is transported to the room-temperature-side heat exchanger 21 via the low-temperature stack 22 and released to the outside.

The working gas in the low temperature stack 22 is
When moving toward the third side, the working fluid is compressed, generating heat of compression. When the temperature of the compressed working fluid is higher than the temperature of the adjacent plate 22a, the heat of compression of the working fluid is transmitted to the plate 22a. The heat exchange between the working fluid and the low temperature stack 22 is repeated while the heat is
Is transmitted to The heat is released to the outside by the room temperature side heat exchanger 21.

On the other hand, when the working fluid moves toward the one end 12 side, the working fluid in the low temperature side stack 22 expands and the pressure decreases. When the temperature of the working fluid in the low-temperature stack 22 becomes lower than the temperature of the adjacent plate 22a, the working fluid absorbs heat from the plate 22a and the heat exchange between the working fluid and the low-temperature stack 22 is repeated, so that the working fluid passes through the slit 24. To the low-temperature side heat exchanger 23, and absorbs heat from the outside in the low-temperature side heat exchanger 23.

As described above, in this embodiment, since the low-temperature side heat exchanger 23 is located at the end of the resonance tube refrigerator 10, the degree of freedom in mounting the object to be cooled is increased.

Further, the prime mover unit 1 is provided on one end 12 side of the resonance tube 11.
4, since the refrigerator unit 20 is disposed on the other end 13 side, a sufficiently long distance between the prime mover unit 14 and the refrigerator unit 20 can be secured,
The refrigerator unit 20 can be prevented from thermally interfering with the prime mover unit 14.

Further, since the resonance tube 11 has a double tube structure, the refrigerator 10 is more compact than when the resonance tube 11 is simply bent.

[0025]

The present invention has the following effects.

Since the low-temperature side heat exchanger is located at the end of the resonance tube refrigerator, the degree of freedom in mounting the object to be cooled increases. In addition, since the prime mover section is disposed at one end of the resonance tube and the refrigerator section is disposed at the other end side, the distance between the prime mover section and the refrigerator section can be sufficiently long, and the refrigerator section is thermally connected to the prime mover section. Interference can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a resonance tube refrigerator according to the present embodiment.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 resonance tube refrigerator 11 resonance tube 11a inner tube portion 11b outer tube portion 12 one end (one end portion) of resonance tube 13 the other end (other end portion) of resonance tube 14 motor unit 15 high temperature side heat exchanger 16 high temperature stack 17 room temperature Side heat exchanger 20 Refrigerator unit 21 Room temperature side heat exchanger 22 Low temperature stack 23 Low temperature side heat exchanger

────────────────────────────────────────────────── (5) References JP-A-58-52984 (JP, A) JP-A-59-100365 (JP, A) JP-A-56-12961 (JP, A) (58) Field (Int. Cl. ⁷ , DB name) F25B 9/00

Claims (2)

(57) [Claims] 1. A high-temperature side heat exchanger, a high-temperature stack and a room-temperature side heat exchanger arranged in order from one end of a resonance tube,
A motor unit that absorbs heat from the outside on the high temperature side and releases heat on the room temperature side to vibrate the working fluid sealed in the resonance tube, and a room temperature side heat exchanger arranged in order from the other end of the resonance tube , A low-temperature stack and a low-temperature side heat exchanger, and a refrigerator section that generates refrigeration on the low-temperature side by the vibration of the working fluid. A resonance tube refrigerator in which the resonance tube is bent to be located at an end of the resonance tube refrigerator. 2. The resonance pipe according to claim 1, wherein the resonance pipe is located on one end side of the resonance pipe with respect to the euploid part, and is located on the other end side of the resonance pipe with respect to the euploid part. The resonance tube refrigerator according to claim 1, further comprising: an outer tube portion disposed around the room, wherein the room-temperature-side heat exchanger and the low-temperature stack are arranged in the outer tube portion.