CN209783037U

CN209783037U - Adjustable type magnetic refrigeration device based on pulse magnetic field

Info

Publication number: CN209783037U
Application number: CN201822042318.2U
Authority: CN
Inventors: 刘斌; 柴玲; 王琪; 陈爱强; 杨文哲
Original assignee: Tianjin University of Commerce
Current assignee: Tianjin University of Commerce
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-12-13
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses an adjustable type magnetic refrigeration device based on pulsed magnetic field. The utility model discloses a plurality of square active regenerators, the pulse power supply repeats, the pulsed magnet, the cold junction heat exchanger, the hot junction heat exchanger, the shunt (with the solenoid valve), solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, centrifugal pump one, centrifugal pump two, the control unit, pipeline and heat transfer fluid constitute, be zero when magnetic field intensity, magnetic material carries out the demagnetization process in the square active regenerator, magnetic material absorbs the heat, heat transfer fluid in the system is under the drive of centrifugal pump, pass square active regenerators with the heat around the cold junction heat exchanger, absorb through magnetic material, and can pass through the switching of the solenoid valve that the shunt is connected, adjust the cold volume that refrigerating plant produced, thereby reach the purpose of the cooling that different temperatures strided.

Description

Adjustable type magnetic refrigeration device based on pulse magnetic field

Technical Field

The utility model relates to a room temperature refrigeration technology field, more specifically say so, with room temperature magnetism refrigerating plant more nimble, high-efficient.

background

At present, nearly one third of global energy is consumed in refrigeration, so the development of refrigeration technology plays an extremely important role in human survival, new energy and new technology development. Therefore, many scholars are seeking new refrigeration technology and new energy, and as the magnetic refrigeration technology is continuously developed in the field of room temperature, the application field thereof is vigorously researched and developed. The traditional gas compression refrigeration greatly promotes the development of modern industry and life, but on the other hand, the traditional gas compression refrigeration also brings environmental destruction and energy crisis to the world, and then, numerous scholars begin to seek clean and green refrigeration devices. As a novel refrigeration mode, the magnetic refrigeration has higher efficiency than gas refrigeration because a compressor is not used, has obvious energy-saving advantage, and is clean and pollution-free.

The development and research of the magnetic refrigeration technology have been over decades, the magnetic refrigeration technology has been maturely applied in the low temperature field, but is still in the research and development stage in the room temperature field, mainly because the wide application of the room temperature magnetic refrigeration technology is limited in the aspects of searching and processing of giant magnetic materials, designing of an active regenerator structure for efficient heat exchange and the like. Because the solid magnetic working medium is filled in the regenerator, the refrigerating capacity of the room temperature magnetic refrigerating system can not be changed by changing the mass of the magnetic working medium, and the requirements of people can not be met in the aspects of experiments and application.

Therefore, based on the magnetic refrigeration technology, the adjustable magnetic refrigeration device based on the pulse magnetic field is designed and researched, and the adjustable magnetic refrigeration device has important significance for the development of the room-temperature magnetic refrigeration technology.

SUMMERY OF THE UTILITY MODEL

The utility model provides an adjustable type magnetic refrigeration device based on pulsed magnetic field, the purpose is through the number of adjusting active regenerator, satisfies our different cold volume's demand.

for realizing the purpose of the utility model, the adopted technical scheme is that:

An adjustable magnetic refrigeration device based on a pulse magnetic field comprises a square active cold accumulator, a repeated pulse power supply, a pulse magnet, a cold end heat exchanger, a hot end heat exchanger, a shunt with an electromagnetic valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a first centrifugal pump, a second centrifugal pump and a control unit, wherein the square active cold accumulator is filled with a magnetic material, and is placed in the middle of a pulse magnet, the pulse magnet is connected with a repetitive pulse power supply, two ends of the square active regenerator are connected with two circulating loops, the heat exchange fluid of one circulation loop from the square active cold accumulator enters a cold end heat exchanger through a first electromagnetic valve, the outlet of the cold end heat exchanger is connected with a first centrifugal pump, the heat exchange fluid flowing out of the first centrifugal pump flows into a shunt with the electromagnetic valve through a second electromagnetic valve, and the outlet of the shunt with the electromagnetic valve is connected with the square active cold accumulator; and the heat exchange fluid from the square active cold accumulator in the other circulation loop enters a hot end heat exchanger through a solenoid valve III, the outlet of the hot end heat exchanger is connected with a centrifugal pump II, the heat exchange fluid flowing out of the centrifugal pump II flows into a flow divider with a solenoid valve through a solenoid valve IV and finally flows back to the square active cold accumulator, and the control unit respectively controls the solenoid valve I, the solenoid valve II, the solenoid valve III, the solenoid valve IV, the centrifugal pump I and the centrifugal pump II. After repeated circulation, the cold end heat exchanger continuously releases cold, and the cold quantity can be quantitatively adjusted by controlling the electromagnetic valves of all pipelines of the shunt so as to achieve different purposes.

The square active cold accumulator is formed by connecting a plurality of PVC pipes in parallel, and each PVC pipe is filled with a magnetic working medium.

The heat insulating material outside the square active cold accumulator is common aluminum silicate fiber product, glass wool product or asbestos.

The heat exchange fluid is water.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The utility model discloses in the work of a plurality of square active regenerators side by side to adopt shunt and solenoid valve control, can satisfy the purpose that wideer refrigeration temperature strides, solved the limited drawback of single active regenerator heat transfer capacity.

2. The utility model discloses well pulse device, simple structure is compact, compares with reciprocating type room, rotation type room temperature magnetism refrigerating plant, parts such as no motor, noise greatly reduced.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

Fig. 2 is a schematic diagram of the position relationship between the pulse magnet and the square active regenerator according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

The utility model discloses as shown in fig. 1-2, the utility model discloses constitute by square active regenerator 1, pulsed magnet 2, repetitive pulse power supply 3, cold junction heat exchanger 4, hot junction heat exchanger 5, shunt 6, centrifugal pump 7, centrifugal pump two 8, solenoid valve 9, solenoid valve two 10, three 11 of solenoid valve, four 12 of solenoid valve, the control unit 13, pipeline and heat transfer fluid of taking the solenoid valve.

The working process of the utility model is as follows: the square active regenerator 1 is arranged in a pulse magnet, a pulse power supply 3 is repeated to enable the pulse magnet 2 to generate a pulse magnetic field, when the pulse magnet 2 generates the magnetic field, a magnetic material in the square active regenerator 1 is magnetized, the magnetic material emits heat, at the moment, a first electromagnetic valve 9, a second electromagnetic valve 10 and a first centrifugal pump 7 are in a closed state, a control unit 13 controls a third electromagnetic valve 11 and a fourth electromagnetic valve 12 to be opened, a second centrifugal pump 8 operates, and heat exchange fluid in the system is driven by the second centrifugal pump 8 to transfer heat generated by the magnetic material in the shape active regenerator 1 to a hot end heat exchanger 5 to dissipate the heat; when the magnetic field intensity in the pulse magnet 2 is zero, the magnetic material in the square active regenerator 1 is demagnetized, the magnetic material absorbs heat, at the moment, the electromagnetic valve III 11, the electromagnetic valve IV 12 and the centrifugal pump II 8 are in a closed state, the control unit 13 controls the electromagnetic valve I9 and the electromagnetic valve II 10 to be opened, the centrifugal pump I7 runs, the heat exchange fluid in the system is driven by the centrifugal pump I7, and the heat of the cold end heat exchanger 4 is transferred to the cylindrical active regenerator 1 and absorbed by the magnetic material. The heat around the cold end heat exchanger 4 can be continuously transferred, so that the purpose of cooling is achieved, and the control unit 13 can control the opening and closing of the electromagnetic valve of the shunt 6 with the electromagnetic valve to adjust the refrigerating temperature span of the magnetic refrigerating system, so as to meet the requirements of different refrigerating processes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable magnetic refrigeration device based on a pulse magnetic field is characterized by comprising a square active regenerator, a repeated pulse power supply, a pulse magnet, a cold end heat exchanger, a hot end heat exchanger, a shunt with a solenoid valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a first centrifugal pump, a second centrifugal pump and a control unit, wherein the square active regenerator is filled with a magnetic material, and is placed in the middle of a pulse magnet, the pulse magnet is connected with a repetitive pulse power supply, two ends of the square active regenerator are connected with two circulating loops, the heat exchange fluid of one circulation loop from the square active cold accumulator enters a cold end heat exchanger through a first electromagnetic valve, the outlet of the cold end heat exchanger is connected with a first centrifugal pump, the heat exchange fluid flowing out of the first centrifugal pump flows into a shunt with the electromagnetic valve through a second electromagnetic valve, and the outlet of the shunt with the electromagnetic valve is connected with the square active cold accumulator; the heat exchange fluid from the square active cold accumulator in the other circulation loop enters a hot end heat exchanger through a solenoid valve III, the outlet of the hot end heat exchanger is connected with a centrifugal pump II, and the heat exchange fluid flowing out of the centrifugal pump II flows into a shunt with a solenoid valve through a solenoid valve IV and finally flows back to the square active cold accumulator; the control unit respectively controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the first centrifugal pump and the second centrifugal pump.

2. the adjustable magnetic refrigeration device based on the pulsed magnetic field according to claim 1, wherein the square active cold accumulator is formed by connecting a plurality of PVC pipes in parallel, and each PVC pipe is filled with a magnetic working medium.

3. The adjustable magnetic refrigerator based on pulse magnetic field as claimed in claim 1, wherein the heat insulating material outside the square active cold accumulator is made of common alumina silicate fiber product, glass wool product or asbestos.

4. The adjustable magnetic refrigeration device based on pulsed magnetic field of claim 1, wherein the heat exchange fluid is water.