JP3230158U - Rotary magnetic refrigeration refrigeration system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic refrigeration type refrigerating apparatus having a simple flow path and low fluid resistance and heat loss. SOLUTION: A rotary magnetic refrigeration type refrigerating apparatus includes a refrigerating apparatus upper case 3a and a refrigerating apparatus lower case 3b assembled to each other, and a first holding plate is provided between a coupling contact surface between the upper case and the lower case. The 6a and the second holding plate 6b are symmetrically fixed, and a circular magnetic working fluid unit 2 is rotatably supported and attached between the first holding plate and the second holding plate via a shaft. The permanent magnet slot 10 is fitted to the outside of the uppermost portion of the refrigerating apparatus upper case. [Selection diagram] Fig. 1

Description

This utility model belongs to the technical field of magnetic refrigeration, and particularly relates to a rotary magnetic refrigeration refrigerating apparatus capable of continuously cooling without storing energy.

Magnetic refrigeration technology is a new refrigeration technology, and unlike conventional vapor compression refrigeration technology, magnetic refrigeration technology is simpler in process and does not require the use of organic working fluids. The organic working fluids used in current high-efficiency refrigeration units have, to varying degrees, the ozone depletion potential (ODP) and the global warming potential (GWP). According to the "Montreal Protocol", many of the conventional organic working fluids have been restricted, which is one factor in the development of magnetic refrigeration technology.

Magnetic freezing technology is the process of freezing or heating using the magnetic heat effect of a material. When a commonly used magnetic calorific material enters a magnetic field, the magnetic moments of the atoms inside the material change regularly from irregular ones, the magnetic entropy of the material decreases, and the magnetic calorific value follows the law of energy conservation. It dissipates heat from the material itself, and the magnetic calorie material absorbs heat away from the magnetic field, and the magnetic moments of the atoms inside the material change from regular to irregular. Recently, the giant magnetoresistive effect of Gd and its alloy Gd5Si2Ge2 has been discovered, which is the basis for the development of magnetic refrigeration technology.

In order to realize a continuous and stable magnetic refrigeration process, it is necessary to periodically change the magnetic field applied to the magnetic working fluid. Although the electromagnetic field can provide a magnetic field that changes periodically, it generates a large magnetic field, which increases the current in the power system and causes high loss. In comparison, current permanent magnet magnetic fields are more popular. The magnetic refrigeration type refrigerating apparatus can be divided into two main types, a rotary type and a reciprocating type, depending on the relative motion method between the magnetic body and the magnetic working fluid. Among them, the rotary freezing device freezing is attracting attention because of its good process continuity.

However, due to the continuous switching of cold heat of the system, the flow path inside the freezer is complicated and there are many pipes, resulting in heat loss, reduced energy utilization and complexity. The flow path structure reduces the reliability of the refrigeration system and increases the resistance. The structure of the complex system is also an important factor limiting the scale-up of the magnetic refrigeration system, and therefore the continuity and reliability of the magnetic refrigeration system is the potential for commercialization and widespread use of the magnetic refrigeration system. Connect directly.

This utility model currently proposes a new type rotary magnetic freezing device in order to solve the drawbacks that the flow path of the magnetic freezing device is complicated, the fluid resistance is large, and the heat loss is large.

In order to realize the above technical features, the purpose of this utility model is realized as follows. The magnetic refrigeration type refrigerating apparatus includes a refrigerating apparatus upper case and a refrigerating apparatus lower case that are assembled with each other, and a first holding plate and a first holding plate and a first holding plate are provided between a coupling contact surface between the refrigerating apparatus upper case and the refrigerating apparatus lower case. The two holding plates are symmetrically fixed, and a circular magnetic working fluid unit is supported and attached between the first holding plate and the second holding plate via a shaft, and is interlocked so as to rotate. A permanent magnet slot is fitted to the outside of the uppermost portion of the refrigerating apparatus upper case, and the permanent magnet slot provides the circular magnetic working fluid unit with an exciting magnetic field perpendicular to the plane of the circular magnetic working fluid unit.

A first bearing mounting hole and a second bearing mounting hole are machined in an intermediate portion between both the first holding plate and the second holding plate, and a first bearing mounting hole is formed in the first bearing mounting hole of the first holding plate. A bearing is attached, a second bearing is attached in the second bearing mounting hole of the second holding plate, and both ends of the shaft are supported and attached between the first bearing and the second bearing.

The circular magnetic working fluid unit includes a frame, and a plurality of magnetic working fluids are uniformly fixed and attached in the gap of the frame, and the outer edge of the magnetic working fluid is fixed via a hoop.

The frame is cast as a star structure using hard insulating plastic, and the magnetic working fluid is cast and cut into a desired fan shape.

The first holding plate and the second holding plate use the same structure, and both of them have a T-shaped cross section, and long ribs having a T-shaped cross section form a refrigerating device upper case and a refrigerating device lower case. A silicon layer is provided on the other optical sliding surface of the T-shaped cross section for rotatably tightening and fitting the circular magnetic working fluid unit. There is.

When the refrigerating device upper case, refrigerating device lower case, circular magnetic working fluid unit, first holding plate, and second holding plate are assembled, the entire cavity is relatively sealed, that is, a cold insulation cavity and a heat insulation cavity. Divided into cavities.

The heat-retaining cavity is for flowing heat-retaining gas, and is configured to supply from the lower part and discharge from the upper part. At the position of the top corner on the side where the road outlet is provided and the heat insulating flow path inlet is provided, a first separator arranged at an angle is attached so that the thermal fluid does not accumulate in the corner.

The cold insulation cavity is configured to supply a cold insulation liquid from the upper part and discharge from the lower part, and a cold insulation flow path inlet is provided in the upper part on one side thereof and a cold insulation flow in the lower part on the other side. At the bottom corner position on the side where the road outlet is provided and the cold insulation flow path inlet is provided, a second separator arranged in an inclined manner is attached so that the cold fluid does not accumulate in the corner.

When operating, the circular magnetic working fluid unit rotates counterclockwise to move the heat-retaining gas inside the heat-retaining cavity and the cold-retaining liquid inside the cold-retaining cavity in opposite directions.

This utility model has the following beneficial effects.
1. According to the design of the freezing device of this utility model, not only energy can be effectively used to enable continuous freezing, but also each process can be modularized and simplified, and rotation can be achieved. It solves various problems that exist in the type magnetic freezing device, such as complicated systems, procedures, and manufacturing.

2. The utility model magnetic refrigeration system has a simple structure, high reliability, equipment scale-up is possible, cold and heat insulation channels are simple, and system resistance is low. ..

It is an exploded structure view of the whole of this utility model. It is a main sectional view of this utility model. It is a structural drawing of the front and back surfaces of the first holding plate of this utility model. It is a structural drawing of the front and back surfaces of the second holding plate of this utility model. It is a structural drawing of the circular magnetic working fluid unit of this utility model.

Hereinafter, embodiments of the utility model will be further described with reference to the drawings.

Example 1:
As shown in FIGS. 1 to 5, it is a rotary magnetic refrigerating apparatus, and the magnetic refrigerating apparatus 1 includes a refrigerating apparatus upper case 3a and a refrigerating apparatus lower case 3b assembled to each other, and the refrigerating apparatus. The first holding plate 6a and the second holding plate 6b are symmetrically fixed between the coupling contact surface between the upper case 3a and the lower case 3b of the refrigerating apparatus, and the first holding plate 6a and the second holding plate 6a are held. A circular magnetic working fluid unit 2 is supported and attached to the plate 6b via a shaft 4, and is interlocked so as to rotate, and a permanent magnet slot is provided outside the uppermost portion of the refrigerating device upper case 3a. 10 is fitted, and the permanent magnet slot 10 provides the circular magnetic working fluid unit 2 with an exciting magnetic field perpendicular to the plane of the circular magnetic working fluid unit 2. The rotary magnetic freezing device enables continuous freezing by effectively utilizing energy. At present, the disadvantages that the flow path of the magnetic refrigeration type refrigerating apparatus becomes complicated, the fluid resistance is large, and the heat loss is large are solved.

Further, a first bearing mounting hole 6c and a second bearing mounting hole 6d are machined in an intermediate portion between both the first holding plate 6a and the second holding plate 6b, respectively, and the first holding plate 6a The first bearing 5a is mounted in the first bearing mounting hole 6c, the second bearing 5b is mounted in the second bearing mounting hole 6d of the second holding plate 6b, and both ends of the shaft 4 are respectively mounted. Is supported and attached between the first bearing 5a and the second bearing 5b. With the above structure, the shaft 4 ensures that it can rotate smoothly by the supporting action of the bearing, and further rotates and interlocks the circular magnetic working fluid unit 2 that supports it.

Further, the circular magnetic working fluid unit 2 includes a frame 7, and a plurality of magnetic working fluids 8 are uniformly fixed and attached to the outer periphery of the frame 7, and the outer edge of the magnetic working fluid 8 has a hoop 9. It is fixed through. The frame 7 is cast as a star-shaped structure using hard insulating plastic, and the magnetic working fluid 8 is cast-molded and cut into a desired fan shape. The magnetic working fluid 8 can generate heat by the action of a magnetic field, can absorb heat when it is separated from the magnetic field region, and realizes circulation cooling when it enters the magnetic field alternately.

Further, the first holding plate 6a and the second holding plate 6b use the same structure, and both of them have a T-shaped cross section 6e, and the elongated rib 6f having the T-shaped cross section 6e The circular magnetic working fluid unit 2 is provided so as to be fastened between the refrigerating device upper case 3a and the refrigerating device lower case 3b to fix these cases, and to the other optical sliding surface of the T-shaped cross section 6e. A silicon layer is provided for rotatably tightening and fitting. The shaft 4 can be effectively supported via the holding plate having the above structure.

Further, when the refrigerating device upper case 3a, the refrigerating device lower case 3b, the circular magnetic working fluid unit 2, the first holding plate 6a and the second holding plate 6b are assembled, the entire cavity becomes a cold insulation cavity 11. It is divided into two relatively closed cavities called a heat insulating cavity 12. The heat-retaining cavity 12 is configured to allow heat-retaining gas to flow, to be supplied from the lower part and discharged from the upper part, and a heat-retaining flow path inlet 13 is provided in the lower part on one side and the upper part on the other side. A first separator 17 arranged at an angle is attached to the top corner position on the side where the heat insulating flow path inlet 14 is provided and the heat insulating flow path inlet 13 is provided so that the thermal fluid does not accumulate in the corner. .. The cold insulation cavity 11 is for flowing a cold insulation liquid, is configured to be supplied from the upper part and discharged from the lower part, and a cold insulation flow path inlet 15 is provided in the upper part on one side thereof and in the lower part on the other side. A second separator 18 is attached at the bottom corner position on the side where the cold insulation flow path outlet 16 is provided and the cold insulation flow path inlet 15 is provided so that the cold fluid does not accumulate in the corner. .. The above two relatively sealed channels allow cooling and heating, respectively.

Further, when operating, the circular magnetic working fluid unit 2 rotates counterclockwise to move the heat insulating gas inside the heat insulating cavity 12 and the cold insulating liquid inside the cold insulating cavity 11 in opposite directions. Let me. Due to the above-mentioned movement and rotation directions, the fluid can sufficiently flow inside the cavity, the heat exchange efficiency is greatly improved, and the working efficiency is further improved.

Further, the outside of the upper flow path is an exciting region of the magnetic working fluid to which a magnetic field is applied, and the outside of the lower flow path is a degaussing region of the magnetic working fluid without a magnetic field, and shields the middle holding plate. The part is a transition region without a magnetic field.

Example 2:
The installation of the magnetic refrigeration type refrigerating apparatus 1 of the utility model is as follows.
The shaft 4 is inserted into the circular magnetic working fluid unit 2, and the fixing method can be fixed by friction, rib addition, screws, or the like according to the size and torque of the system. Next, the first bearing 5a and the second bearing 5b are fixed to the first holding plate 6a and the second holding plate 6b, where the first holding plate 6a is attached to the top of the shaft 4 and the shaft 4 The other end is inserted into the second holding plate 6b, and the circular magnetic working fluid unit 2 is sandwiched via the shaft 4 on a surface opposite to the ribbed surface of the holding plate unit. After that, the first holding plate 6a and the second holding plate 6b to which the shaft 4, the circular magnetic working fluid unit 2, the first bearing 5a and the second bearing 5b are attached are attached to the refrigerating apparatus lower case 3b, and the first holding plate 6b is attached. The ribs of the plate 6a and the second holding plate 6b can fix the shaft 4 and the circular magnetic working fluid unit 2 at the corresponding positions, hang the refrigerating device upper case 3a, and fix the two cases through screws, clamps, etc., and finally. The permanent magnet slot 10 is arranged on one side of the refrigerating apparatus upper case 3a, and the assembly of the magnetic refrigerating apparatus 1 is completed.

Example 4:
In this embodiment, the case unit is formed by abutting the refrigerating device upper case 3a and the refrigerating device lower case 3b, these two cases are the same, and the case is made of an aluminum alloy material and has a wall thickness of 2 mm. Yes, the internal size is length x width x height 200 mm x 100 x mm x 30 mm. A joint for inflow and outflow of fluid is connected to the refrigerating device upper case 3a and the refrigerating device lower case 3b, and the joint and the case are connected by welding using the same material, and screws are engraved on the outside of the joint. It is connected to the external cycle via a hose. The circular hole left at the lower edge of the opening of the case unit through which the bearing can pass has an outer diameter of 10 mm.

In the above embodiment, the cross section of the first holding plate 6a and the second holding plate 6b is T-shaped, and the main body of the first holding plate 6a and the second holding plate 6b is made of a hard heat insulating plastic material and has a length of the main body. × width × height is 200 mm × 30 mm × 2 mm, one side is provided with ribs of length × width × height 200 mm × 2 mm × 2 mm, and 0 on the other side in contact with the magnetic working fluid. A 5.5 mm thick silicone material is adhered. A bearing can pass through the center of one of the two holding plate members, the second holding plate 6b, and a 12 mm circular hole for attaching the bearing is formed, and the other first holding plate 6a has a thickness. A slot for mounting a 2 mm bearing is opened, but this slot does not penetrate.

In the above embodiment, the circular magnetic working fluid unit 2 is composed of a frame 7, a magnetic working fluid 8 and a hoop 9, and the frame 7 is cast as a star-shaped structure using hard heat insulating plastic, and its outer diameter × inner diameter thereof. The × thickness is 198 mm × 10 mm × 25 mm, the magnetic working fluid 8 is cast-formed and cut into a desired fan shape, the diameter × thickness is 168 mm × 25 mm, and finally through a carbon fiber hoop 9. The hoop 9 is fixed to the frame 7 and has an outer diameter x inner diameter x thickness of 200 mm x 198 mm x 25 mm. The thickness of the circular magnetic working fluid unit 2 is 25 mm.

In the above embodiment, the first bearing 5a, the second bearing 5b and the shaft 4 are all made of stainless steel, the diameter of the shaft 4 is 10 mm, and the outer diameters of the first bearing 5a and the second bearing 5b are 12 mm. The inner diameter is 10 mm and the thickness is 2 mm.

Example 5:
A cooling method for the rotary magnetic refrigeration system.
Step1: A step in which the permanent magnet slot 10 generates a magnetic field, and the magnetic field can pass through the refrigerating device upper case 3a and the refrigerating device lower case 3b to further provide an exciting magnetic field to the circular magnetic working fluid unit 2 inside the refrigerating device upper case 3a and the refrigerating device lower case 3b. When,
Step2: A step of driving the shaft 4 via a power unit, the shaft 4 synchronously driving the circular magnetic working fluid unit 2 to rotate, and further rotating the circular magnetic working fluid unit 2 in a magnetic field.
Step3: When the magnetic working fluid 8 enters the magnetic field, the magnetic working fluid 8 can be excited to dissipate heat, and when the magnetic working fluid 8 separates from the magnetic field, the magnetic working fluid 8 is demagnetized and absorbs heat. Steps to do and
Step4: By calculating the heat absorption time of the magnetic working fluid 8 in the cold fluid, the rotation angle velocity of the circular magnetic working fluid unit 2 is controlled, and the circulating heat radiation of the magnetic working fluid 8 inside the heat insulating cavity 12 and the cold insulating cavity 11 is obtained. It includes a step of achieving heat absorption and further enabling continuous cooling of the magnetic refrigeration system 1.

In the figure, a magnetic refrigeration type refrigerating device 1, a circular magnetic working fluid unit 2, a refrigerating device upper case 3a, a refrigerating device lower case 3b, a shaft 4, a first bearing 5a, a second bearing 5b, a first holding plate 6a, a second Holding plate 6b, 1st bearing mounting hole 6c, 2nd bearing mounting hole 6d, T-shaped cross section 6e, long rib 6f, frame 7, magnetic working fluid 8, hoop 9, permanent magnet slot 10, cold insulation cavity 11, heat insulation Cavity 12, heat insulation flow path inlet 13, heat insulation flow path outlet 14, cold insulation flow path inlet 15, cold insulation flow path outlet 16, first separator 17, second separator 18.

Claims (9)

It is a rotary magnetic refrigeration type refrigeration system.
The magnetic refrigeration type refrigerating apparatus (1) includes a refrigerating apparatus upper case (3a) and a refrigerating apparatus lower case (3b) that are assembled with each other.
The first holding plate (6a) and the second holding plate (6b) are symmetrically fixed between the coupling contact surface between the refrigerating device upper case (3a) and the refrigerating device lower case (3b).
A circular magnetic working fluid unit (2) is supported and attached between the first holding plate (6a) and the second holding plate (6b) via a shaft (4) so as to rotate. Linked,
A permanent magnet slot (10) is fitted to the outside of the uppermost portion of the refrigerating apparatus upper case (3a).
The permanent magnet slot (10) provides the circular magnetic working fluid unit (2) with an exciting magnetic field perpendicular to the plane of the circular magnetic working fluid unit (2).
A rotary magnetic refrigeration type refrigeration system characterized by this. A first bearing mounting hole (6c) and a second bearing mounting hole (6d) are machined in the intermediate portion between both the first holding plate (6a) and the second holding plate (6b), respectively.
The first bearing (5a) is mounted in the first bearing mounting hole (6c) of the first holding plate (6a).
The second bearing (5b) is mounted in the second bearing mounting hole (6d) of the second holding plate (6b).
Each of both ends of the shaft (4) is supported and attached between the first bearing (5a) and the second bearing (5b).
The rotary magnetic refrigeration type refrigerating apparatus according to claim 1. The circular magnetic working fluid unit (2) includes a frame (7).
A plurality of magnetic working fluids (8) are uniformly fixed and attached in the gap of the frame (7).
The outer edge of the magnetic working fluid (8) is fixed via the hoop (9).
The rotary magnetic refrigeration type refrigerating apparatus according to claim 1. The frame (7) is cast as a star-shaped structure using hard heat insulating plastic.
The magnetic working fluid (8) is cast and cut into a desired fan shape.
The rotary magnetic refrigeration type refrigerating apparatus according to claim 3. The first holding plate (6a) and the second holding plate (6b) use the same structure, and both of them have a T-shaped cross section (6e).
A long rib (6f) having a T-shaped cross section (6e) is provided by being fastened between the refrigerating device upper case (3a) and the refrigerating device lower case (3b) to fix these cases.
The other optical sliding surface of the T-shaped cross section (6e) is provided with a silicon layer for rotatably tightening and fitting the circular magnetic working fluid unit (2).
The rotary magnetic refrigeration type refrigerating apparatus according to claim 1 or 2. When the refrigerating device upper case (3a), the refrigerating device lower case (3b), the circular magnetic working fluid unit (2), the first holding plate (6a), and the second holding plate (6b) are assembled. The entire cavity is divided into two relatively closed cavities, a cold insulation cavity (11) and a thermal insulation cavity (12).
The rotary magnetic refrigeration type refrigerating apparatus according to claim 1. The heat-retaining cavity (12) is configured to supply heat-retaining gas from the lower part and discharge from the upper part, and a heat-retaining flow path inlet (13) is provided in the lower part on one side thereof and the other side. A heat insulating flow path outlet (14) is provided in the upper part of the above, and the heat fluid is inclined and arranged at the position of the top corner on the side where the heat insulating flow path inlet (13) is provided so that the thermal fluid does not accumulate in the corner. The first separator (17) is attached,
The rotary magnetic refrigeration type refrigerating apparatus according to claim 6. The cold insulation cavity (11) is configured to supply a cold insulation liquid from the upper part and discharge from the lower part, and a cold insulation flow path inlet (15) is provided in the upper portion on one side thereof, and the other side is provided. A cold insulation flow path outlet (16) is provided at the lower part of the cold insulation flow path, and the bottom corner on the side where the cold insulation flow path inlet (15) is provided is arranged at an angle so that cold fluid does not accumulate in the corner. The second separator (18) is attached,
The rotary magnetic refrigeration type refrigerating apparatus according to claim 7. When operating, the circular magnetic working fluid unit (2) rotates counterclockwise to separate the heat insulating gas inside the heat insulating cavity (12) and the cold insulating liquid inside the cold insulation cavity (11), respectively. Move in the opposite direction,
The rotary magnetic refrigeration type refrigerating apparatus according to claim 8.