CN218722385U

CN218722385U - Magnetic storage refrigeration mechanism

Info

Publication number: CN218722385U
Application number: CN202222873658.6U
Authority: CN
Inventors: 连天
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-30
Filing date: 2022-10-30
Publication date: 2023-03-24
Anticipated expiration: 2032-10-30

Abstract

The utility model provides a magnetic storage refrigeration mechanism, which comprises a cold head of a refrigerator, wherein the cold head is made of non-magnetic material, the surface of the cold head is a rectangular side wall and is a Y-shaped body; the inner side surfaces of the two support arms of the Y-shaped body are parallel to each other, and the single arm part is inserted into a copper block in a tight fit manner; electromagnets are oppositely arranged on the inner sides of the top ends of the support arms of the Y-shaped body; a rectangular plate type cold end heat exchanger made of paramagnetic materials is inserted between the two support arms of the cold head in a tight fit manner; the cold head is arranged between two rectangular magnetic poles of a secondary magnet by clamping a cold-end heat exchanger. The utility model discloses in, because the Y physique that the cold head formed by non-magnetic material panel from the middle bending has elasticity, at cold junction heat exchanger magnetization in-process rather than the separation, avoid absorbing the heat of its release, at cold junction heat exchanger demagnetization in-process rather than the contact, only receive the cold volume of its release, such arrangement can increase substantially and hold the cryogenic efficiency of magnetism.

Description

Magnetic storage refrigeration mechanism

Technical Field

The utility model relates to a hold magnetism refrigeration mechanism field.

Background

The conditions for realizing superconductivity are as follows: 1. using a gaseous refrigerant; 2. a low temperature superconducting material is used. When the condition is met, the common gaseous working medium refrigerator can not reach the required low temperature (about 10K), and a magnetic storage refrigeration mechanism needs to be superposed. However, the cold head of the magnetic storage refrigeration mechanism is always in contact with the cold end heat exchanger in the magnetization and demagnetization processes, the cold head not only absorbs heat released in the magnetization process, but also receives cold released in the demagnetization process, most of the heat and the cold can be counteracted with each other, and the magnetic storage refrigeration efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hold magnetic refrigeration mechanism, including a magnetoelasticity cold head in this mechanism, at cold junction heat exchanger magnetization in-process rather than the separation, avoid absorbing the heat of its release, at cold junction heat exchanger demagnetization in-process rather than the contact, only receive the cold volume of its release, such arrangement can increase substantially and hold the refrigerated efficiency of magnetism.

The utility model discloses a technical scheme who adopts for realizing above technical requirement is: a magnetic storage refrigeration mechanism comprises a cold head of a refrigerator, wherein the cold head is made of a non-magnetic material, and the surface of the cold head is a Y-shaped body with a rectangular side wall; the inner side surfaces of the two support arms of the Y-shaped body are parallel to each other, and the single arm part is inserted into a copper block in a tight fit manner; electromagnets are oppositely arranged on the inner sides of the top ends of the support arms of the Y-shaped body;

a rectangular plate type cold end heat exchanger made of paramagnetic materials is inserted between the two support arms of the cold head in a tight fit manner;

the cold head is arranged between two rectangular magnetic poles of a secondary magnet by clamping a cold-end heat exchanger.

Further, in the magnetic storage refrigeration mechanism described above: in the cold head, two rows of electromagnets on the inner side of the top end of the support arm of the Y-shaped body correspond one to one, the axial leads are superposed, and the magnetic pole surfaces are connected.

Further, in the magnetic storage refrigeration mechanism described above: the surface area of the cold end heat exchanger is matched with the surface area of the rectangular magnetic pole, and four sides of the cold end heat exchanger are parallel to each other.

Further, in the magnetic storage refrigeration mechanism described above: the cold end heat exchanger and the middle parts of two inner side walls parallel to the two support arms of the cold head are respectively connected with a connecting plate made of a heat insulating material; the upper end and the lower end of the connecting plate are embedded into rectangular grooves machined in the side walls of the upper rectangular magnetic pole and the lower rectangular magnetic pole.

Further, in the magnetic storage refrigeration mechanism described above: and two ends of the cold-end heat exchanger are respectively connected with an airflow pipeline.

Further, in the magnetic storage refrigeration mechanism described above: and a gap is arranged between the upper and lower surfaces of the two support arms of the cold head and the magnetic pole surface of the rectangular magnetic pole.

Further, in the magnetic storage refrigeration mechanism described above: the magnetic yoke of the secondary magnet is a rectangular vacuum box body made of magnetic conductive materials, and the cold head and the rectangular magnetic pole are arranged in the vacuum box body.

Further, in the magnetic storage refrigeration mechanism described above: in the magnetic yoke of the rectangular vacuum box body, the upper end surface and the lower end surface of two rectangular magnetic poles are connected with the upper inner wall and the lower inner wall of the vacuum box body, the Y-shaped bottom end part of the cold head extends out from the side surface of the magnetic yoke of the rectangular vacuum box body in a non-contact mode, the two airflow pipelines extend out from one side surface of the magnetic yoke of the rectangular vacuum box body in a non-contact mode, and the extending parts are fixed between the two extending pipelines and the magnetic yoke of the rectangular vacuum box body through two heat insulation sleeves with flanges.

The utility model discloses in, because the Y physique that the cold head formed from the middle bending by non-magnetic material panel has elasticity, at cold junction heat exchanger magnetization in-process rather than the separation, avoid absorbing the heat of its release, at cold junction heat exchanger demagnetization in-process rather than the contact, only receive the cold volume of its release, such arrangement can increase substantially and hold the refrigerated efficiency of magnetism.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

FIG. 1 shows one of the structures of a magnetoelastic cold head;

FIG. 2 is a second structure diagram of the magnetoelastic cold head;

FIG. 3 is a third structural view of the magnetoelastic cold head;

FIG. 4, a combination diagram of a magnetoelastic cold head and cold end heat exchanger and a secondary magnet;

fig. 5 is an external view of the magnetoelastic cold head magnetic storage refrigeration mechanism.

Detailed Description

In embodiment 1, the magnetic storage refrigeration mechanism with a magnetoelastic cold head of this embodiment is a lower stage refrigeration part of a gaseous working medium magnetic storage refrigerator, the gaseous working medium refrigeration mechanism in butt joint with the lower stage refrigeration part is an upper stage refrigeration part, and a junction component of the upper and lower stage refrigeration mechanisms is a cold end heat exchanger. The cold end heat exchanger is made of paramagnetic material and can generate heat when magnetized, part of the heat is taken away by the low-temperature gaseous working medium passing through the cold end heat exchanger, and the other part of the heat is released to the cold head in contact with the cold end heat exchanger; the cold end heat exchanger can absorb heat when demagnetizing, and part of the heat is absorbed from the cold head, and the other part of the heat is absorbed from the gaseous working medium in the cold end heat exchanger, and the cold head absorbs heat and heat (cold energy) in the whole process of magnetization and demagnetization, and the heat and the cold energy are balanced, so that the actually absorbed cold energy is not much. To increase the cooling efficiency, a condition is created in this embodiment such that the cold head only absorbs cold and not heat.

As shown in figures 1 to 5, in the embodiment, a magnetic storage refrigeration mechanism comprises a cold head 1 which is made of non-magnetic conductive material and has a rectangular side wall in a Y shape, in the initial state, the inner side surfaces of two support arms of the Y-shaped cold head 1 are parallel to each other, a single arm part of the Y-shaped cold head 1 is inserted into a copper block 100 in a tight fit manner, two rows of cylindrical electromagnets 1-1 are installed on the inner side surfaces of the top ends of the two support arms of the cold head 1, an upper row and a lower row of electromagnets 1-1 are in one-to-one correspondence, the axial leads are overlapped, the magnetic pole surfaces are connected, a rectangular plate type cold end heat exchanger 2 made of paramagnetic material is inserted between the two support arms of the cold head 1 in a tight fit manner, the two support arm parts of the Y-shaped cold head 1 and the rectangular plate type cold end heat exchanger 2 are all arranged between two rectangular magnetic poles 3-1 of a secondary magnet 3, the surface area of the rectangular plate type cold end heat exchanger 2 is approximately equal to the surface area of the rectangular magnetic poles 3-1, the four sides are parallel to each other, the rectangular plate type cold end heat exchanger 2 is connected with a connecting plate type heat exchanger 2 made of a connecting plate made of a magnetic pole 3-to the middle part of two support arms of the rectangular plate type cold end coil 3, the rectangular cold end coil 2 is respectively, the upper magnetic pole 3-to the rectangular magnetic pole coil 3 of the rectangular cold end coil 3, the rectangular cold end coil 3 is connected with the upper magnetic pole coil 3-to the upper magnetic pole 3, the rectangular magnetic pole coil 3, the rectangular cold end coil 3 is connected with the rectangular cold end coil 3, the components are placed in the vacuum box, wherein the upper end face and the lower end face of each of the two rectangular magnetic poles 3-1 are connected with the upper inner wall and the lower inner wall of the vacuum box 3-3, the single-arm part of the Y-shaped cold head 1 extends out of the side face of the rectangular vacuum box 3-3 in a non-contact mode, the two airflow pipelines 4 extend out of one side face of the rectangular vacuum box 3-3 in a non-contact mode, and the extending parts are fixed between the two extending pipelines 4 and the rectangular vacuum box 3-3 through two heat insulation sleeves 4-1 with flanges.

As shown in figure 1, a magnetic cold accumulation refrigeration mechanism comprises a cold head 1 which is made of non-magnetic material and has a rectangular surface and a Y-shaped side wall.

As shown in FIGS. 2 and 3, in the initial state, the inner surfaces of the two arms of the Y-shaped cold head 1 are parallel to each other, and the single arm part thereof is inserted into a copper block 100 with tight fit.

The copper block 100 does not belong to a component of a magnetic cold accumulation refrigeration mechanism, is a component of a copper block for wrapping a magnet exciting coil of a deflection magnet in radiotherapy equipment, and is marked only for explaining the function of the cold head 1. The cold head 1 transmits cold energy to the copper block, and the copper block transmits the cold energy to the magnet exciting coil to cool the magnet exciting coil until the magnet exciting coil is converted into a superconducting state. And (5) finishing pouring.

Two rows of cylindrical electromagnets 1-1 are arranged on the inner side surfaces of the top ends of two supporting arms of the Y-shaped cold head 1, the electromagnets 1-1 in the upper row and the electromagnets 1 in the lower row are in one-to-one correspondence, the axial leads are overlapped, and the magnetic pole surfaces are connected.

As shown in fig. 4, a rectangular plate type cold end heat exchanger 2 made of paramagnetic material is inserted between two support arms of a cold head 1 in a tight fit manner, part of the cold head 1 and all of the rectangular plate type cold end heat exchanger 2 are arranged between two rectangular magnetic poles 3-1 of a secondary magnet 3, the surface area of the rectangular plate type cold end heat exchanger 2 is approximately equal to that of the rectangular magnetic poles 3-1, four sides are parallel to each other, a connecting plate 2-1 made of heat insulating material is respectively connected to the middle parts of two parallel side walls of the rectangular plate type cold end heat exchanger 2 and two parallel support arms of a Y-shaped cold head 1, the upper end and the lower end of the connecting plate 2-1 are embedded into rectangular grooves processed on the side walls of the upper rectangular magnetic pole 3-1 and connected to each other, an air flow pipeline 4 is respectively connected to two ends of one parallel side wall of the two support arms of the rectangular plate type cold end heat exchanger 2 and the Y-shaped cold head 1, a certain gap is reserved between the upper surface and the lower surface of the rectangular magnetic pole 3-1, and the two rectangular magnetic pole coils 3-2 are respectively sleeved outside the two rectangular magnetic poles.

In the above fig. 4, the two rectangular coils 3-2 are moved up and down by a distance in order to see the relevant parts such as the magnetic poles.

As shown in fig. 5, the magnetic yoke 3-3 of the secondary magnet 3 is a rectangular vacuum box made of magnetic conductive material, and the above components are placed in the rectangular vacuum box, wherein the upper and lower end surfaces of two rectangular magnetic poles 3-1 are connected with the upper and lower inner walls of the magnetic yoke 3-3 of the vacuum box, the Y-shaped bottom end of the cold head 1 extends out from the side surface of the magnetic yoke 3-3 of the rectangular vacuum box without contact, two air flow pipes 4 extend out from one side surface of the magnetic yoke 3-3 of the rectangular vacuum box without contact, and the extended parts are fixed between the two extended pipes 4 and the magnetic yoke 3-3 of the rectangular vacuum box by using two heat insulating sleeves 4-1 with flanges.

In the present embodiment, the cold head 1 is a cold head 1 of a stirling refrigerating cycle refrigerator.

Claims

1. An accumulation magnetic refrigeration mechanism comprises a cold head (1) of a refrigerator, and is characterized in that:

the cold head (1) is made of a non-magnetic material, the surface of the cold head is a rectangular side wall and is a Y-shaped body; the inner side surfaces of two support arms of the Y-shaped body are parallel to each other, and the single arm part is inserted into a copper block (100) in a tight fit manner; electromagnets (1-1) are oppositely arranged on the inner side of the top end of the support arm of the Y-shaped body;

the two support arms of the cold head (1) are inserted into a rectangular plate type cold end heat exchanger (2) made of paramagnetic materials in a tight fit manner;

the cold head (1) clamps the cold-end heat exchanger (2) and is arranged between two rectangular magnetic poles (3-1) of one secondary magnet (3).

2. The magnetic storage refrigeration mechanism according to claim 1, characterized in that: in the cold head (1), two rows of electromagnets (1-1) at the inner side of the top end of the support arm of the Y-shaped body correspond one to one, the axial leads are overlapped, and the magnetic pole surfaces are connected.

3. The magnetic storage refrigeration mechanism according to claim 2, characterized in that: the surface area of the cold-end heat exchanger (2) is matched with that of the rectangular magnetic pole (3-1), and four sides are parallel to each other.

4. The magnetic storage refrigeration mechanism according to claim 3, characterized in that: the cold end heat exchanger (2) and the middle parts of two inner side walls parallel to the two support arms of the cold head (1) are respectively connected with a connecting plate (2-1) made of a heat insulating material; the upper end and the lower end of the connecting plate (2-1) are embedded into rectangular grooves machined in the side walls of the upper rectangular magnetic pole and the lower rectangular magnetic pole (3-1).

5. The magnetic storage refrigeration mechanism according to claim 4, characterized in that: and two ends of the cold-end heat exchanger (2) are respectively connected with an airflow pipeline (4).

6. The magnetic storage refrigeration mechanism according to claim 5, characterized in that: gaps are arranged between the upper and lower surfaces of the two support arms of the cold head (1) and the magnetic pole surfaces of the rectangular magnetic poles (3-1).

7. The magnetic storage refrigeration mechanism according to claim 6, characterized in that: the magnetic yoke (3-3) of the secondary magnet (3) is a rectangular vacuum box body made of magnetic conductive materials, and the cold head (1) and the rectangular magnetic pole (3-1) are arranged in the vacuum box body.

8. The magnetic storage refrigeration mechanism according to claim 7, characterized in that: in the magnetic yoke (3-3) of the rectangular vacuum box body, the upper end face and the lower end face of two rectangular magnetic poles (3-1) are connected with the upper inner wall and the lower inner wall of the vacuum box body, the Y-shaped bottom end part of the cold head (1) extends out of the side face of the magnetic yoke (3-3) of the rectangular vacuum box body in a non-contact mode, two airflow pipelines (4) extend out of one side face of the magnetic yoke (3-3) of the rectangular vacuum box body in a non-contact mode, and the extending parts are fixed between the two extending pipelines (4) and the magnetic yoke (3-3) of the rectangular vacuum box body through two heat insulating sleeves (4-1) with flanges.