CN219346851U - Layered regenerator for room temperature magnetic refrigerator and room temperature magnetic refrigerator - Google Patents
Layered regenerator for room temperature magnetic refrigerator and room temperature magnetic refrigerator Download PDFInfo
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- CN219346851U CN219346851U CN202223398700.XU CN202220398700U CN219346851U CN 219346851 U CN219346851 U CN 219346851U CN 202220398700 U CN202220398700 U CN 202220398700U CN 219346851 U CN219346851 U CN 219346851U
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Abstract
The utility model discloses a layered heat regenerator for a room temperature magnetic refrigerator, which comprises: the heat regenerator comprises a heat regenerator body and a magnetic refrigeration working medium, wherein the magnetic refrigeration working medium is arranged in an inner cavity of the heat regenerator body and divides the inner cavity into a first inner cavity and a second inner cavity; the left end of the heat regenerator body is provided with a hot inlet and a cold outlet, the hot inlet is communicated with the first inner cavity, and the cold outlet is communicated with the second inner cavity; the right end of the heat regenerator body is provided with a hot outlet and a cold inlet, the hot outlet is communicated with the first inner cavity, and the cold inlet is communicated with the second inner cavity. The utility model also discloses a room temperature magnetic refrigerator. The utility model divides the heat regenerator into two parts by utilizing the magnetic refrigeration working medium and the sealing element, and completely separates the heat circulation and the cold circulation of the internal heat exchange fluid, thereby effectively improving the refrigeration effect.
Description
Technical Field
The utility model belongs to the technical field of room temperature magnetic refrigeration, and particularly relates to a layered regenerator for a room temperature magnetic refrigerator and the room temperature magnetic refrigerator.
Background
The room temperature magnetic refrigeration is a solid refrigeration technology, and is a novel refrigeration technology. With the development of new materials and new technologies, the development of room temperature magnetic refrigeration technology has been generally emphasized and has made great progress in recent decades. The room temperature magnetic refrigeration technology meets the current sustainable development time requirement and is considered as a green refrigeration technology hopefully replacing the traditional refrigeration technology. The room temperature magnetic refrigeration technology is a technology for realizing refrigeration by utilizing the magnetocaloric effect of a magnetic refrigeration material, and according to the magnetocaloric effect principle, the magnetic refrigeration material can generate a phenomenon of heating or cooling under the action of a changed magnetic field, and the magnetocaloric effect of the magnetic refrigeration material reaches the maximum value near the Curie temperature.
Room temperature magnetic refrigerators generally consist of a magnetic field system, a regenerator, a heat exchanger, a heat exchange fluid, and a driver, etc., wherein the regenerator is one of the key components of the room temperature magnetic refrigerator. The room temperature magnetic refrigerator generally adopts an active regenerative heat recovery (AMR) technology to realize refrigeration, which requires heat exchange fluid to flow through the regenerator in forward and reverse directions when the regenerator filled with magnetic refrigeration materials is magnetized and demagnetized, so as to form a certain temperature gradient in the magnetic refrigeration working medium in the regenerator, thus forming a high temperature end and a low temperature end at two ends of the regenerator, forming a larger temperature difference at two ends, simultaneously forming a larger temperature difference at two ends of the heat exchange fluid, and realizing refrigeration. The heat regenerator is periodically magnetized and demagnetized through a magnetic field and is matched with heat exchange fluid to flow in a reciprocating mode, a temperature gradient is formed in the heat regenerator, and a high-temperature end and a low-temperature end are formed at two ends of the heat regenerator, so that refrigeration is achieved.
Initially, two ends of a regenerator of the room temperature magnetic refrigerator are respectively provided with an inlet and an outlet, and heat circulation and cold circulation flow through the same inlet and outlet, so that heat exchange fluid is in a mixed flow state; then, two ports are provided at both ends of the regenerator to perform the cold cycle and the hot cycle respectively, and at this time, the heat exchange fluid is still in a mixed state inside the regenerator although the cold cycle and the hot cycle are separated outside the regenerator. Although two inlets and outlets are respectively arranged at two ends of the heat regenerator, the two inlets and outlets are divided into a cold flow port and a hot flow port, the flow direction is fixed, and meanwhile, the external cold flow circulation and the external hot flow circulation are also separated, so that the refrigerating effect is improved. However, the heat exchange fluid in the heat regenerator still has a mixing phenomenon, and has a certain influence on the refrigerating effect.
Disclosure of Invention
The utility model aims to provide a layered heat regenerator for a room temperature magnetic refrigerator and the room temperature magnetic refrigerator, wherein the heat regenerator is divided into two parts by utilizing a magnetic refrigeration working medium and a sealing piece, so that the heat circulation and the cold circulation of an internal heat exchange fluid are completely separated, and the refrigeration effect is effectively improved.
In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
a layered regenerator for a room temperature magnetic refrigerator comprising: the heat regenerator comprises a heat regenerator body and a magnetic refrigeration working medium, wherein the magnetic refrigeration working medium is arranged in an inner cavity of the heat regenerator body and divides the inner cavity into a first inner cavity and a second inner cavity; the left end of the heat regenerator body is provided with a hot inlet and a cold outlet, the hot inlet is communicated with the first inner cavity, and the cold outlet is communicated with the second inner cavity; the right end of the heat regenerator body is provided with a hot outlet and a cold inlet, the hot outlet is communicated with the first inner cavity, and the cold inlet is communicated with the second inner cavity.
Further, the shape of the heat regenerator body is cylindrical or square, and the shape of the magnetic refrigeration working medium is a flat plate shape, a comb tooth shape, a zigzag shape or a square wave shape.
A room temperature magnetic refrigerator comprising: the heat regenerator comprises a heat regenerator body, a magnetic refrigeration working medium, a magnet, an electromagnetic valve, a first driving pump, a second driving pump, a cold end heat exchanger, a hot end heat exchanger and a buffer; the magnetic refrigeration working medium is arranged in the inner cavity of the heat regenerator body and divides the inner cavity into a first inner cavity and a second inner cavity; the left end of the heat regenerator body is provided with a hot inlet and a cold outlet, the hot inlet is communicated with the first inner cavity, and the cold outlet is communicated with the second inner cavity; the right end of the heat regenerator body is provided with a hot outlet and a cold inlet, the hot outlet is communicated with the first inner cavity, and the cold inlet is communicated with the second inner cavity; the middle part of the magnet is axially provided with a magnetic field cavity, the heat regenerator body is arranged in the magnetic field cavity, and the hot inlet, the cold outlet, the hot outlet and the cold inlet are respectively provided with electromagnetic valves; the input port and the output port of the cold end heat exchanger are respectively connected with the cold outlet and the hot inlet through pipelines, and the first driving pump is arranged at the input port of the cold end heat exchanger; the input port and the output port of the hot end heat exchanger are respectively connected with the hot outlet and the cold inlet through pipelines, and the second driving pump is arranged at the input port of the hot end heat exchanger; and the output ports of the cold end heat exchanger and the hot end heat exchanger are respectively provided with a buffer.
The technical effects of the utility model include:
the layered regenerator for the room temperature magnetic refrigerator divides an inner space (inner cavity) into two parts for hot fluid circulation and cold fluid circulation, and not only forms separate flow of hot fluid and cold fluid outside the regenerator, but also realizes separate flow of the hot fluid and the cold fluid inside the layered regenerator for the magnetic refrigerator, so that the flowing direction of the hot fluid and the flowing direction of the cold fluid are both oriented, and the heat exchange efficiency is improved.
The utility model uses magnetic refrigeration working medium to divide the inner cavity of the layered heat regenerator for the magnetic refrigerator into two parts, wherein one part passes through the thermal circulation fluid, and the other part passes through the cold circulation fluid, so that the separation of the thermal fluid and the cold fluid is realized in the heat regenerator.
The two ends of the layered heat regenerator for the magnetic refrigerator are respectively provided with the outlet interface and the inlet interface, the outlet interface and the inlet interface at one end are respectively provided with the hot inlet and the cold outlet, and the outlet interface and the inlet interface at the other end are respectively provided with the hot outlet and the cold inlet, so that the hot circulation and the cold circulation of heat exchange fluid outside the layered heat regenerator for the magnetic refrigerator are completely separated.
Drawings
FIG. 1 is a schematic view of a layered regenerator for a magnetic refrigerator according to the present utility model;
FIG. 2a is a schematic longitudinal section view of a magnetic refrigeration medium in a flat plate shape and a regenerator body in a cylindrical shape in the utility model;
FIG. 2b is a schematic diagram of a longitudinal section of a comb-shaped magnetic refrigeration medium and a cylindrical regenerator body according to the present utility model;
FIG. 2c is a schematic diagram of a longitudinal section of a magnetic refrigeration medium with a zigzag shape and a regenerator body with a cylindrical shape in the present utility model;
FIG. 2d is a schematic diagram of a longitudinal section of a magnetic refrigeration medium in square waveform and a regenerator body in cylindrical shape in the present utility model;
FIG. 3a is a schematic longitudinal section view of a magnetic refrigeration medium in a flat plate shape and a regenerator body in a square cylinder shape;
FIG. 3b is a schematic diagram of a longitudinal section of a comb-shaped magnetic refrigeration working medium and a square cylinder-shaped regenerator body in the utility model;
FIG. 3c is a schematic diagram of a longitudinal section of a magnetic refrigeration working medium with a zigzag shape and a regenerator body with a square cylinder shape in the utility model;
FIG. 3d is a schematic diagram of a longitudinal section of a square waveform magnetic refrigeration medium and a square cylinder regenerator body according to the present utility model;
fig. 4 is a schematic structural diagram of a magnetic refrigerator using a layered regenerator in accordance with the present utility model.
Detailed Description
The following description fully illustrates the specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.
As shown in fig. 1, a schematic structure of a layered regenerator for a magnetic refrigerator according to the present utility model is shown.
A layered regenerator for a room temperature magnetic refrigerator comprising: the heat regenerator comprises a heat regenerator body 1 and a magnetic refrigeration working medium 2, wherein the magnetic refrigeration working medium 2 is arranged in an inner cavity of the heat regenerator body 1, and the inner cavity is divided into a first inner cavity 11 and a second inner cavity 12 by the magnetic refrigeration working medium 2; the left end of the heat regenerator body 1 is provided with a hot inlet 13 and a cold outlet 14, the hot inlet 13 is communicated with the first inner cavity 11, and the cold outlet 14 is communicated with the second inner cavity 12; the right end of the heat regenerator body 1 is provided with a hot outlet 15 and a cold inlet 16, the hot outlet 15 is communicated with the first inner cavity 11, and the cold inlet 16 is communicated with the second inner cavity 12.
The inner cavity of the regenerator body 1 is divided into a first inner cavity 11 and a second inner cavity 12 by the magnetic refrigeration working medium 2, the arrow indicates the fluid flow direction, the first inner cavity 11 intermittently and unidirectionally flows through the hot circulating fluid, and the second inner cavity 12 intermittently and unidirectionally flows through the cold circulating fluid. Intermittent means that the hot circulating fluid or the cold circulating fluid is static in the magnetizing and demagnetizing process of the magnetic refrigeration working medium 2; after the magnetic refrigeration working medium 2 is magnetized, the heat circulation fluid of the first inner cavity 11 flows rightwards, and at the moment, the cold circulation fluid of the second inner cavity 12 is static; when the magnetic refrigeration working medium 2 is demagnetized, the cold circulation fluid in the second inner cavity 12 flows leftwards, and the hot circulation fluid in the first inner cavity 11 is stationary.
As shown in fig. 2a, a schematic diagram of a longitudinal section of a magnetic refrigeration medium 2 in a flat plate shape and a regenerator body 1 in a cylindrical shape in the present utility model is shown; as shown in fig. 2b, a schematic longitudinal section of a comb-tooth-shaped magnetic refrigeration working medium 2 and a cylindrical regenerator body 1 in the present utility model is shown; as shown in fig. 2c, a schematic diagram of a longitudinal section of a zigzag magnetic refrigeration working medium 2 and a cylindrical regenerator body 1 in the present utility model is shown; as shown in fig. 2d, a schematic longitudinal section of the magnetic refrigeration medium 2 in square waveform and the regenerator body 1 in cylindrical shape is shown in the present utility model.
The shape of the regenerator body 1 is cylindrical, and the shape of the magnetic refrigeration working medium 2 is a flat plate shape, a comb tooth shape, a zigzag shape or a square wave shape.
As shown in fig. 3a, a schematic diagram of a longitudinal section of a magnetic refrigeration working medium 2 in a flat plate shape and a regenerator body 1 in a square cylinder shape in the present utility model is shown; as shown in fig. 3b, a schematic longitudinal section of a comb-tooth-shaped magnetic refrigeration working medium 2 and a square cylinder-shaped regenerator body 1 in the utility model is shown; as shown in fig. 3c, a schematic diagram of a longitudinal section of a zigzag magnetic refrigeration working medium 2 and a square cylinder-shaped regenerator body 1 in the present utility model is shown; as shown in fig. 3d, a schematic longitudinal section of the magnetic refrigeration medium 2 in square waveform and the regenerator body 1 in square cylinder shape is shown in the present utility model.
The shape of the regenerator body 1 is square cylinder, and the shape of the magnetic refrigeration working medium 2 is flat plate, comb tooth, saw tooth or square wave.
As shown in fig. 4, a schematic structural diagram of a magnetic refrigerator using a layered regenerator according to the present utility model is shown.
The room temperature magnetic refrigerator includes: the heat regenerator comprises a heat regenerator body 1, a magnetic refrigeration working medium 2, a magnet 3, an electromagnetic valve 4, a first driving pump 5, a second driving pump 6, a cold end heat exchanger 7, a hot end heat exchanger 8 and a buffer 9; the middle part of the magnet 3 is axially provided with a magnetic field cavity, the heat regenerator body 1 is arranged in the magnetic field cavity, and the hot inlet 13, the cold outlet 14, the hot outlet 15 and the cold inlet 16 are respectively provided with an electromagnetic valve 4; the input port and the output port of the cold end heat exchanger 7 are respectively connected with a cold outlet 14 and a hot inlet 13 through pipelines, and the first driving pump 5 is arranged at the input port of the cold end heat exchanger 7; the input port and the output port of the hot end heat exchanger 8 are respectively connected with a hot outlet 15 and a cold inlet 16 through pipelines, and the second driving pump 6 is arranged at the input port of the hot end heat exchanger 8; the output ports of the cold end heat exchanger 7 and the hot end heat exchanger 8 are respectively provided with a buffer 9.
The heat exchange method of the room temperature magnetic refrigerator comprises the following specific steps:
step 1: when the magnetic refrigeration working medium 2 in the heat regenerator body 1 is magnetized, circulating fluid is heated by the magnetic refrigeration working medium 2, the electromagnetic valves 4 at the hot inlet 13 and the hot outlet 15 are opened, the electromagnetic valves 4 at the cold inlet 16 and the cold outlet 14 are closed, the second driving pump 6 is started, the first driving pump 5 is stopped, the heat circulating fluid in the first inner cavity 11 flows rightwards and enters the hot end heat exchanger 8 for heat exchange, and the heat circulating fluid enters and is stored in the buffer 9 at one side of the hot end heat exchanger 8 after flowing through the hot end heat exchanger 8;
step 2: after the magnetic refrigeration working medium 2 in the heat regenerator body 1 is demagnetized, the circulating fluid is cooled by the magnetic refrigeration working medium 2, the electromagnetic valves 4 of the cold inlet 16 and the cold outlet 14 are opened, the electromagnetic valves 4 at the hot inlet 13 and the hot outlet 15 are closed, the first driving pump 5 is started, the second driving pump 6 is stopped, the cold circulating fluid in the second inner cavity 12 flows leftwards and enters the cold end heat exchanger 7 for heat exchange, and the cold circulating fluid enters and is stored in the buffer 9 at one side of the cold end heat exchanger 7 after flowing through the cold end heat exchanger 7.
In the magnetizing process of the magnetic refrigeration working medium 2, the electromagnetic valves 4 of the cold inlet 16 and the cold outlet 14 are closed, and the circulating fluid is static. In the demagnetizing process of the magnetic refrigeration working medium 2, the electromagnetic valve 4 at the hot inlet 13 and the hot outlet 15 is closed, and the circulating fluid is static. Namely, the first driving pump 5, the second driving pump 6 and the magnetic refrigeration working medium 2 stop working, and the circulating fluid in the regenerator body 1 remains static. Therefore, the inner cavity is divided into two parts in the heat regenerator body 1, so that the cold flow circulation and the hot flow circulation are completely separated, the heat exchange efficiency is improved, and the energy consumption of the heat regenerator can be effectively reduced.
In the running process of the room temperature magnetic refrigerator, the AMR technology generates a temperature gradient in the heat regenerator body 1 step by step through the reciprocating flow of the circulating fluid, generates a larger temperature difference at the two ends of the heat regenerator body 1, simultaneously gradually transfers the heat of the cold end heat exchanger 7 to the hot end through the circulating fluid, and discharges the heat through the hot end heat exchanger 8 to realize refrigeration.
The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (3)
1. A layered regenerator for a room temperature magnetic refrigerator, comprising: the heat regenerator comprises a heat regenerator body and a magnetic refrigeration working medium, wherein the magnetic refrigeration working medium is arranged in an inner cavity of the heat regenerator body and divides the inner cavity into a first inner cavity and a second inner cavity; the left end of the heat regenerator body is provided with a hot inlet and a cold outlet, the hot inlet is communicated with the first inner cavity, and the cold outlet is communicated with the second inner cavity; the right end of the heat regenerator body is provided with a hot outlet and a cold inlet, the hot outlet is communicated with the first inner cavity, and the cold inlet is communicated with the second inner cavity.
2. The layered regenerator for a room temperature magnetic refrigerator according to claim 1, wherein the regenerator body has a cylindrical or square shape, and the magnetic refrigerant has a flat plate shape, a comb shape, a zigzag shape, or a square wave shape.
3. A room temperature magnetic refrigerator using the layered regenerator for a room temperature magnetic refrigerator of claim 1, further comprising: the device comprises a magnet, an electromagnetic valve, a first driving pump, a second driving pump, a cold end heat exchanger, a hot end heat exchanger and a buffer; the middle part of the magnet is axially provided with a magnetic field cavity, the heat regenerator body is arranged in the magnetic field cavity, and the hot inlet, the cold outlet, the hot outlet and the cold inlet are respectively provided with electromagnetic valves; the input port and the output port of the cold end heat exchanger are respectively connected with the cold outlet and the hot inlet through pipelines, and the first driving pump is arranged at the input port of the cold end heat exchanger; the input port and the output port of the hot end heat exchanger are respectively connected with the hot outlet and the cold inlet through pipelines, and the second driving pump is arranged at the input port of the hot end heat exchanger; and the output ports of the cold end heat exchanger and the hot end heat exchanger are respectively provided with a buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223398700.XU CN219346851U (en) | 2022-12-15 | 2022-12-15 | Layered regenerator for room temperature magnetic refrigerator and room temperature magnetic refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223398700.XU CN219346851U (en) | 2022-12-15 | 2022-12-15 | Layered regenerator for room temperature magnetic refrigerator and room temperature magnetic refrigerator |
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| CN219346851U true CN219346851U (en) | 2023-07-14 |
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| CN202223398700.XU Active CN219346851U (en) | 2022-12-15 | 2022-12-15 | Layered regenerator for room temperature magnetic refrigerator and room temperature magnetic refrigerator |
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