阅读说明：本技术 一种旋转式磁制冷冷机及方法 (Rotary magnetic refrigeration cooler and method ) 是由 蔺新星 尹立坤 杨立明 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种旋转式磁制冷冷机及方法,一种旋转式磁制冷冷机,其特征其在于：所述磁制冷冷机包括相互组装的冷机上外壳和冷机下外壳；所述冷机上外壳和冷机下外壳的结合接触面之间对称固定有第一夹板和第二夹板,在第一夹板和第二夹板之间通过轴转动支撑安装有圆形磁工质组件,所述冷机上外壳的顶部外部套装有永磁体槽。解决现阶段磁制冷冷接的流道复杂、体阻力大、热量损失大的缺陷。(The invention discloses a rotary magnetic refrigeration cooler and a method, and the rotary magnetic refrigeration cooler is characterized in that: the magnetic refrigerating machine comprises a machine upper shell and a machine lower shell which are mutually assembled; a first clamping plate and a second clamping plate are symmetrically fixed between the combined contact surfaces of the upper shell and the lower shell of the cold machine, a circular magnetic working medium assembly is rotatably supported and installed between the first clamping plate and the second clamping plate through a shaft, and a permanent magnet groove is sleeved outside the top of the upper shell of the cold machine. The defects of complex flow channel, large body resistance and large heat loss of the magnetic refrigeration cold joint at the present stage are overcome.)

1. A rotary magnetic refrigeration chiller is characterized in that: the magnetic refrigerating machine (1) comprises a machine upper shell (3 a) and a machine lower shell (3 b) which are mutually assembled; the utility model discloses a cold machine of cold machine, including cold machine upper housing (3 a) and cold machine lower housing (3 b), the combination contact surface between the symmetry be fixed with first splint (6 a) and second splint (6 b), support through axle (4) between first splint (6 a) and second splint (6 b) and install circular magnetism working medium subassembly (2) and drive its rotation, the outside cover in top of cold machine upper housing (3 a) is equipped with permanent magnet groove (10), permanent magnet groove (10) provide the planar excitation magnetic field of circular magnetism working medium subassembly (2) of perpendicular to for circular magnetism working medium subassembly (2).

2. A rotary magnetic refrigerator according to claim 1 wherein: the middle part of first splint (6 a) and second splint (6 b) has all processed the bearing mounting hole respectively, installs first bearing (5 a) at the bearing mounting hole of first splint (6 a) inside, installs second bearing (5 b) at the bearing mounting hole of second splint (6 b) inside, the both ends of axle (4) are supported respectively and are installed between first bearing (5 a) and second bearing (5 b).

3. A rotary magnetic refrigerator according to claim 1 wherein: the circular magnetic working medium assembly (2) comprises a framework (7), a plurality of magnetic working media (8) are fixedly arranged in gaps of the framework (7), and the outer edges of the magnetic working media (8) are fixed through circular hoops (9).

4. A rotary magnetic refrigerator according to claim 3 in which: the framework (7) is cast into a star-shaped structure by hard heat-insulating plastic; the magnetic working medium (8) is formed by casting and is cut into a required fan shape.

5. A rotary magnetic refrigerator according to claim 1 or 2 wherein: the first clamping plate (6 a) and the second clamping plate (6 b) adopt the same structure, the cross sections of the first clamping plate and the second clamping plate both adopt T-shaped cross sections, and long-strip-shaped ribs with the T-shaped cross sections are clamped between the upper refrigerator shell (3 a) and the lower refrigerator shell (3 b) and are fixed; and a silica gel layer which is used for rotating, sealing and matching with the round magnetic working medium component (2) is arranged on the other smooth surface of the T-shaped section.

6. A rotary magnetic refrigerator according to claim 1 wherein: the upper shell (3 a) of the refrigerator, the lower shell (3 b) of the refrigerator, the circular magnetic working medium assembly (2), the first clamping plate (6 a) and the second clamping plate (6 b) are assembled and then divide the whole cavity into a cold carrying cavity (11) and a heat carrying cavity (12) which are closed relatively.

7. A rotary magnetic refrigerator according to claim 6 in which: the heat-carrying cavity (12) is used for circulating heat-carrying gas, and adopts a downward-in-upward-out arrangement mode, the lower part of one side of the heat-carrying cavity is provided with a heat-carrying flow channel inlet (13), and the upper part of the other side of the heat-carrying cavity is provided with a heat-carrying flow channel outlet (14); and an obliquely-arranged partition plate is arranged at the top angle position of one side of the heat-carrying flow channel inlet (13) to avoid hot fluid from accumulating at corners.

8. A rotary magnetic refrigerator according to claim 7 wherein: the cold-carrying cavity (11) is used for circulating cold-carrying liquid, and adopts an arrangement mode of upper inlet and lower outlet, wherein the upper part of one side of the cold-carrying cavity is provided with a cold-carrying runner inlet (15), and the lower part of the other side of the cold-carrying cavity is provided with a cold-carrying runner outlet (16); an obliquely arranged baffle is arranged at the bottom corner of one side of the cold carrier runner inlet (15) to avoid cold fluid accumulation in corners.

9. A rotary magnetic refrigerator according to claim 1 wherein: when the circular magnetic working medium assembly works, the circular magnetic working medium assembly (2) rotates anticlockwise, and heat-carrying gas in the heat-carrying cavity (12) and cold-carrying liquid in the cold-carrying cavity (11) respectively move in the opposite directions.

10. A refrigerating method of a rotary magnetic refrigerator as claimed in any one of claims 1 to 9, characterized in that:

step 1: a magnetic field is generated through the permanent magnet groove (10), and meanwhile, the magnetic field can penetrate through the upper shell (3 a) of the refrigerator, so that an excitation field is provided for the circular magnetic working medium assembly (2) in the refrigerator;

step 2: the power device drives the shaft (4), and the shaft (4) synchronously drives the circular magnetic working medium component (2) to rotate, so that the circular magnetic working medium component (2) rotates in a magnetic field;

step 3: when the magnetic working medium (8) enters the magnetic field, the magnetic working medium (8) can be excited to release heat; when the magnetic working medium (8) leaves the field, the magnetic working medium (8) is demagnetized and absorbs heat;

step 4: the rotation angular velocity of the circular magnetic working medium assembly (2) is controlled by calculating the heat absorption time of the magnetic working medium (8) in the cold fluid, so that the heat release and heat absorption of the magnetic working medium (8) in the heat-carrying cavity (12) and the cold-carrying cavity (11) are realized in a circulating manner, and the continuous refrigeration process of the magnetic refrigeration refrigerator (1) is further realized.

Technical Field

The invention belongs to the technical field of magnetic refrigeration, and particularly relates to a rotary magnetic refrigeration cooler for continuous refrigeration without energy storage.

Background

The magnetic refrigeration technology is a new refrigeration technology, is different from the traditional vapor compression refrigeration technology, has simpler process and does not need to use organic working media. The organic working medium used by the high-efficiency refrigerating unit at present has larger or smaller Ozone Destruction Potential (ODP) and Global Warming Potential (GWP). According to the montreal protocol a large number of conventional organic working substances will be limited, which is one reason why magnetic refrigeration technology has emerged.

Magnetic refrigeration technology is a process for realizing refrigeration or heating by utilizing the magnetocaloric effect of certain materials. Generally, when a used magnetocaloric material enters a magnetic field, the magnetic moments of atoms in the material are changed from disorder to order, and the magnetic entropy of the material is lowered to release heat according to the energy conservation magnetocaloric material; when the magnetocaloric material leaves a magnetic field, the material absorbs heat, and the magnetic moments of the atoms inside the material change from ordered to disordered. The giant magnetocaloric effect of Gd and Gd5Si2Ge2 alloy thereof is found recently, which lays a foundation for the development of magnetic refrigeration technology.

In order to realize a continuous and stable magnetic refrigeration process, the magnetic field applied to the magnetic working medium needs to be periodically changed. The electromagnetic field can provide a periodically changing magnetic field, but the electric system current is larger to form a larger magnetic field, so that higher loss is formed, and the current permanent magnet magnetic field is more popular. According to the relative motion mode of the magnet and the magnetic working medium, the magnetic refrigeration cold machine is divided into a rotary type and a reciprocating type. Wherein, the rotary cooler has better continuity of the refrigeration process and is widely concerned.

However, in order to realize the continuous switching of the cold and the heat of the system, the internal flow channel of the refrigerator is more complex and has more pipelines, which causes heat loss and low energy loss utilization rate, and the complex flow channel structure causes the reliability of the refrigerator to be reduced and the resistance to be higher. The complicated system structure is also an important restriction factor for restricting the amplification of the magnetic refrigeration system, so the continuity and the reliability of the magnetic refrigeration chiller are directly related to the commercial application and the popularization possibility of the magnetic refrigeration chiller.

Disclosure of Invention

The invention provides a novel rotary magnetic refrigeration cold machine, aiming at solving the defects of complex flow channel, large body resistance and large heat loss of the magnetic refrigeration cold machine at the present stage.

In order to achieve the technical features, the invention is realized as follows: a rotary magnetic refrigeration cold machine comprises a cold machine upper shell and a cold machine lower shell which are mutually assembled; the utility model discloses a circular magnetism working medium subassembly of cold machine, including the shell, the cold machine is gone up the shell and is cooled down the shell, the combination contact surface of shell is fixed with first splint and second splint between the cold machine, installs circular magnetism working medium subassembly and drives its rotation through the axle support between first splint and second splint, the outside cover in top of shell is equipped with the permanent magnet groove on the cold machine, the permanent magnet groove provides the circular magnetism working medium subassembly of perpendicular to planar excitation magnetic field.

Bearing mounting holes are processed in the middle of the first clamping plate and the middle of the second clamping plate respectively, a first bearing is mounted in the bearing mounting hole of the first clamping plate, a second bearing is mounted in the bearing mounting hole of the second clamping plate, and two ends of the shaft are supported and mounted between the first bearing and the second bearing respectively.

The circular magnetic working medium assembly comprises a framework, a plurality of magnetic working media are fixedly arranged in gaps of the framework, and the outer edges of the magnetic working media are fixed through circular hoops.

The framework is in a star-shaped structure cast by hard heat-insulating plastic; the magnetic working medium is formed by casting and is cut into a required sector.

The first clamping plate and the second clamping plate adopt the same structure, the cross sections of the first clamping plate and the second clamping plate both adopt T-shaped cross sections, and long-strip-shaped ribs with the T-shaped cross sections are clamped between the upper shell and the lower shell of the cold machine and are fixed; and a silica gel layer which is used for rotating, sealing and matching with the round magnetic working medium component is arranged on the other smooth surface of the T-shaped section.

After the upper shell of the cold machine, the lower shell of the cold machine, the circular magnetic working medium assembly, the first clamping plate and the second clamping plate are assembled, the whole cavity is divided into a cold-carrying cavity and a heat-carrying cavity which are relatively closed.

The heat-carrying cavity is used for circulating heat-carrying gas, and adopts a downward-in-upward-out arrangement mode, a heat-carrying flow channel inlet is arranged at the lower part of one side of the heat-carrying cavity, and a heat-carrying flow channel outlet is arranged at the upper part of the other side of the heat-carrying cavity; the top angle position of one side of the heat-carrying flow channel inlet is provided with a baffle plate which is obliquely arranged so as to avoid the accumulation of hot fluid in corners.

The cold-carrying cavity is used for circulating cold-carrying liquid and adopts an arrangement mode of upper inlet and lower outlet, the upper part of one side of the cold-carrying cavity is provided with a cold-carrying runner inlet, and the lower part of the other side of the cold-carrying cavity is provided with a cold-carrying runner outlet; an obliquely arranged baffle plate is arranged at the bottom corner of one side of the cold carrier runner inlet so as to avoid cold fluid accumulation at the corner.

When the circular magnetic working medium assembly works, the circular magnetic working medium assembly rotates anticlockwise, and heat-carrying gas in the heat-carrying cavity and cold-carrying liquid in the cold-carrying cavity respectively move in the opposite directions.

The refrigeration method of the rotary magnetic refrigeration refrigerator comprises the following steps:

step 1: a magnetic field is generated through the permanent magnet slots, and meanwhile, the magnetic field can penetrate through the upper shell of the refrigerator, so that an excitation field is provided for the circular magnetic working medium assembly in the refrigerator;

step 2: the shaft synchronously drives the circular magnetic working medium assembly to rotate through the driving shaft of the power device, so that the circular magnetic working medium assembly rotates in a magnetic field;

step 3: when the magnetic working medium enters the magnetic field, the magnetic working medium can be excited to release heat; when the magnetic working medium leaves the field, the magnetic working medium is demagnetized and absorbs heat;

step 4: the rotation angular velocity of the circular magnetic working medium assembly is controlled by calculating the heat absorption time of the magnetic working medium in the cold fluid, so that the heat release and heat absorption of the magnetic working medium in the heat-carrying cavity and the cold-carrying cavity are realized in a circulating manner, and the continuous refrigeration process of the magnetic refrigeration refrigerator is further realized.

The invention has the following beneficial effects:

1. the design of the refrigerating machine disclosed by the invention can realize effective energy utilization to realize a continuous refrigerating process, realize modularization simplification of each link and solve the problems of complex system, complex flow, complex manufacturing and the like of a rotary magnetic refrigerating machine.

2. The magnetic refrigeration cold machine has the advantages of simple structure, high reliability, high equipment amplification feasibility, simple cold-carrying and hot runner and small system resistance.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a view showing the overall explosion structure of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is a front and back structure view of the first splint of the present invention.

Fig. 4 is a front and back structure view of the second splint of the present invention.

FIG. 5 is a diagram of a circular magnetic working medium assembly according to the present invention.

In the figure: the magnetic refrigerating machine comprises a magnetic refrigerating machine 1, a circular magnetic working medium assembly 2, a machine upper shell 3a, a machine lower shell 3b, a shaft 4, a first bearing 5a, a second bearing 5b, a first clamping plate 6a, a second clamping plate 6b, a framework 7, a magnetic working medium 8, a circular hoop 9, a permanent magnet groove 10, a cold carrying cavity 11, a heat carrying cavity 12, a heat carrying runner inlet 13, a heat carrying runner outlet 14, a cold carrying runner inlet 15 and a cold carrying runner outlet 16.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.