CN105222391B - Reciprocating magnetic refrigeration part and magnetic refrigeration apparatus - Google Patents

Abstract

The invention discloses a reciprocating magnetic refrigeration component and magnetic refrigeration equipment. The reciprocating magnetic refrigeration component includes a sliding block and two magnetic refrigeration components. The two side walls of the sliding block are provided with magnetic conductors arranged opposite to each other. The components are distributed on both sides of the slider; the magnetic refrigeration component includes a magnetic field system, a magnet conducting body assembly and two magnetic refrigeration beds, the magnetic field system includes two oppositely arranged magnets, and the magnet conducting body assembly includes a middle magnet conducting body and two side magnet conducting bodies , the side magnet conductors are fixed on the corresponding magnets, the middle magnet conductor is located between the two side magnet conductors, and the magnetic refrigeration bed is correspondingly located between the middle magnet conductor and the side magnet conductors; for a single magnetic refrigeration component, the corresponding conductor The magnet is in contact with the middle magnet conducting body and is in contact with the two side magnet conducting bodies alternately. The two magnetic refrigeration beds can be refrigerated alternately, thereby effectively improving the refrigeration efficiency of the reciprocating magnetic refrigeration components, so as to ensure that the magnetic refrigeration equipment has a strong refrigeration capacity.

Description

Reciprocating magnetic refrigeration components and magnetic refrigeration equipment

technical field

The invention belongs to the technical field of magnetic refrigeration, and in particular relates to a reciprocating magnetic refrigeration component and magnetic refrigeration equipment.

Background technique

The magnetocaloric effect is a property of the material to absorb and release heat due to the change of the internal magnetic entropy during the magnetization and demagnetization process of the magnetic material, and it is an inherent characteristic of the material. It is a new technology with environmental protection and energy saving, and the magnetic refrigeration equipment uses the magnetocaloric effect for refrigeration.

At present, magnetic refrigeration equipment usually includes a hot-end radiator, a cold-end radiator, a heat exchange liquid-driven pump, and a magnetic refrigeration component, while the magnetic refrigeration component includes a magnetic field system and a magnetic refrigeration bed. The magnetic refrigeration bed is filled with a medium magnetic working medium. The magnetic field system excites and demagnetizes the magnetic refrigeration bed, so as to realize the refrigeration and heating of the magnetic working medium in the magnetic refrigeration bed. According to the specific operation forms of excitation and demagnetization, magnetic refrigeration components are divided into: rotary magnetic refrigeration components and reciprocating magnetic refrigeration components. For the reciprocating magnetic refrigeration component, the magnetic field system or the magnetic refrigeration bed is driven to and fro reciprocally by the motor during the working process to realize the excitation and demagnetization of the magnetic working medium, and the magnetic working medium will undergo two processes of heat absorption and heat release. The reciprocating magnetic refrigeration components in the prior art usually use a magnetic field system to excite and demagnetize a magnetic working medium bed, and during the change period of the magnetic field system, the magnetic working medium bed will perform two processes of cooling and heating, that is, It is said that only half of the time is used for refrigeration, resulting in lower refrigeration efficiency of the reciprocating magnetic refrigeration components in the prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a reciprocating magnetic refrigeration component and magnetic refrigeration equipment to improve the refrigeration efficiency of the reciprocating magnetic refrigeration component.

In order to realize the above-mentioned purpose of the invention, the present invention adopts the following technical scheme to realize:

A reciprocating magnetic refrigeration component includes a sliding block and two magnetic refrigeration components, the sliding block is a magnet isolation body, the two side walls of the sliding block are provided with magnetic conductors disposed opposite to each other, and the two magnetic refrigeration components distributed on both sides of the slider; the magnetic refrigeration assembly includes a magnetic field system, a magnetic conductor assembly and two magnetic refrigeration beds; the magnetic field system includes two oppositely arranged magnets, and the magnetic conductive assembly includes a middle magnetic conductor and two side magnetizers, the side magnetizers are fixed on the corresponding magnets, the middle magnetizer is located between the two side magnetizers, and the magnetic refrigeration bed is located in the middle correspondingly Between the magnet conducting body and the side magnet conducting bodies, the slider is slidably connected between the two middle magnet conducting bodies, and the magnet conducting bodies are in contact with the magnetic refrigeration components on the corresponding side; for a single magnetic refrigeration body In the assembly, the corresponding magnet conducting body is in contact with the middle magnet conducting body and in magnetic conducting contact with the two side magnet conducting bodies alternately.

In the above-mentioned reciprocating magnetic refrigeration component, a chute is provided at the end of the intermediate magnet conducting body, and the slider is slidably connected in the chute.

In the above-mentioned reciprocating magnetic refrigeration component, the end of the side magnet conducting body is provided with a guide groove; when the magnet conducting body is in contact with the corresponding side magnet conducting plate, the magnet conducting body is located in the corresponding in the guide groove.

In the above-mentioned reciprocating magnetic refrigeration component, the magnetic conductor assembly further includes a driving device for driving the sliding block to move back and forth, and the driving device is connected with the sliding block.

In the above-mentioned reciprocating magnetic refrigeration component, the driving device is a linear motor, and the output end of the linear motor is connected to the sliding block; or, the driving device includes a motor and a threaded rod, and the sliding block is provided with a There are threaded holes in which the threaded rods are threadedly connected.

In the above-mentioned reciprocating magnetic refrigeration component, the length of the magnet conducting body is smaller than the distance between the two side magnet conducting bodies.

In the above-mentioned reciprocating magnetic refrigeration component, one end of the magnetic refrigeration bed is provided with a port that communicates with the interior of the magnetic refrigeration bed, and one end of the magnetic refrigeration bed is provided with a partition plate, and the partition plate is located between two parts. Between the two ports, the interior of the magnetic refrigeration bed is divided into two connected heat exchange liquid flow channels, and the heat exchange liquid flow channels are filled with a magnetic working medium.

A magnetic refrigeration equipment, comprising a hot end radiator, a cold end radiator and a heat exchange liquid driving pump, and also includes the above-mentioned reciprocating magnetic refrigeration component, a magnetic refrigeration bed in the reciprocating magnetic refrigeration component, and the hot end heat dissipation The heat exchanger, the cold end radiator and the heat exchange liquid driving pump are connected together to form a heat exchange liquid circulation flow path.

Compared with the prior art, the advantages and positive effects of the present invention are as follows: the reciprocating magnetic refrigeration component and the magnetic refrigeration equipment provided by the present invention can change the magnetic field generated by the magnetic field system by arranging the magnetic conductor assembly in the magnetic field system. Through the path, during the sliding process of the slider, the magnet conductors will alternately make the middle magnet conductor and the side magnet conductors on both sides in magnetic conduction. A degaussing space is formed between them, and an excitation space is formed between the other side magnetizer that is not in magnetic conduction with the middle magnetizer and the middle magnetizer, so that one magnetic field system can provide changes to two magnetic refrigeration beds through the magnetizer assembly at the same time. The magnetic field enables the magnetic refrigeration beds at different positions to alternately excite and demagnetize to complete the heating and cooling process, so that during the change period of the magnetic field system, different magnetic refrigeration beds can be alternately refrigerated, thus effectively improving the reciprocating magnetic refrigeration. Component cooling efficiency to ensure that the magnetic refrigeration equipment has a strong cooling capacity. In addition, in the actual use process, the magnetic field of the magnetic refrigeration bed can be changed only by driving the slider to move, while the magnetic field system and the magnetic refrigeration bed remain stationary. The connection of the overall heat exchange liquid pipeline of the refrigeration equipment improves the operation reliability. On the other hand, the sliding block is independently driven to effectively reduce the energy consumption. At the same time, because a magnetic field system is used to excite and demagnetize the two magnetic refrigeration beds, There is no need to configure a magnetic field system for each magnetic refrigeration bed, which greatly simplifies the overall structure of the magnetic refrigeration equipment, reduces the overall volume, and improves the energy efficiency ratio. At the same time, the two symmetrically arranged magnetic refrigeration assemblies can always demagnetize the two magnetic refrigeration beds during the reciprocating movement cycle of the slider, thereby effectively improving the refrigeration efficiency and reducing energy consumption. .

Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings.

Description of drawings

1 is a schematic structural diagram of an embodiment of a reciprocating magnetic refrigeration component of the present invention;

2 is a schematic structural diagram of a magnetic refrigeration assembly in an embodiment of a reciprocating magnetic refrigeration component of the present invention;

Fig. 3 is A-A sectional view in Fig. 2;

Fig. 4 is the structural representation of the magnetic refrigeration bed in the embodiment of the reciprocating magnetic refrigeration component of the present invention;

5 is a reference diagram of the embodiment of the reciprocating magnetic refrigeration component of the present invention in state one;

FIG. 6 is a reference diagram of the second state of the embodiment of the reciprocating magnetic refrigeration component of the present invention.

Detailed ways

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, the reciprocating magnetic refrigeration component in this embodiment includes a slider 1 and two magnetic refrigeration assemblies 2. The slider 1 is a magnet isolation body. A magnet conductor, two magnetic refrigeration assemblies 2 are distributed on both sides of the slider 1; the magnetic refrigeration assembly 2 includes a magnetic field system 21, a magnet conductor assembly and two magnetic refrigeration beds 24; The magnet assembly includes a middle magnet conductor 22 and two side magnet conductors 23, the side magnet conductors 23 are fixed on the corresponding magnets, the middle magnet conductor 22 is located between the two side magnet conductors 23, and the magnetic refrigeration bed 24 is located in the middle correspondingly Between the magnetizer 22 and the side magnetizers 23, the slider 1 is slidably connected between the two middle magnetizers 22, and the magnetizer 11 is in contact with the magnetic refrigeration assembly 2 on the corresponding side; for a single magnetic refrigeration assembly 2, the corresponding guide The magnet 11 is in contact with the middle magnet conductor 22 and is in contact with the two side magnet conductors 23 alternately.

Specifically, the slider 1 in the reciprocating magnetic refrigeration component of this embodiment can slide relative to the middle magnetic conductor 22, and the slider 1 will drive the magnetic conductor 11 to alternately contact the side magnetic conductors 23 on both sides in magnetic conduction, and The magnet conductor 11 is in constant contact with the intermediate magnet conductor 22 to maintain a magnetic conduction state. The following description will be given by taking a single magnetic refrigeration assembly 2 as an example. During the reciprocating movement of the slider 1, the magnet conductors 11 will alternately contact the side magnet conductors 23 on both sides, so that the two side magnet conductors 23 can be in alternating magnetic conduction with the middle magnet conductor 22 through the magnet conductors 11, wherein, A degaussing space is formed between the side magnetizer 23 that is in magnetic conduction with the middle magnetizer 22 and the middle magnetizer 22 , and an excitation is formed between the side magnetizer 23 that is not in magnetic communication with the middle magnetizer 22 and the middle magnetizer 22 Space, during the sliding process of the slider 1, the magnetic refrigeration bed 24 will perform excitation and demagnetization treatment, and during this process, the magnetic refrigeration bed 24 will perform heating and cooling correspondingly. Since the excitation and demagnetization of the two magnetic refrigeration beds 24 can be completed by using one magnetic field system 21, the refrigeration efficiency of the reciprocating magnetic refrigeration component of this embodiment can be effectively improved. In addition, during use, only the slider 1 needs to be driven to move. Compared with the existing reciprocating magnetic refrigeration components that need to drive the magnetic refrigeration bed or the magnetic field system to rotate, the reciprocating magnetic refrigeration components of this embodiment can be more effective. of reducing energy consumption. In addition, both the magnetic field system 21 and the magnetic refrigeration bed 24 remain stationary, so that the heat exchange liquid can enter and exit the magnetic refrigeration bed 24 conveniently.

In the reciprocating magnetic refrigeration component of this embodiment, by setting the magnetic conductor assembly in the magnetic field system, the magnetic conductive assembly can change the magnetic flux path generated by the magnetic field system. During this process, a degaussing space is formed between the side magnetizer that is in magnetic conduction with the middle magnetizer and the middle magnetizer, while the other side magnetizer that is not in magnetic conduction with the middle magnetizer forms a degaussing space. An excitation space is formed between the magnetic conductor and the intermediate magnetic conductor, so that a magnetic field system can simultaneously provide a changing magnetic field to the two magnetic refrigeration beds through the magnetic conductor assembly, so that the magnetic refrigeration beds at different positions are alternately excited and demagnetized to complete heating and cooling. Therefore, during the change period of the magnetic field system, different magnetic refrigeration beds can alternately perform refrigeration, thereby effectively improving the refrigeration efficiency of the reciprocating magnetic refrigeration components to ensure that the magnetic refrigeration equipment has a strong refrigeration capacity. In addition, in the actual use process, the magnetic field of the magnetic refrigeration bed can be changed only by driving the slider to move, while the magnetic field system and the magnetic refrigeration bed remain stationary. The connection of the overall heat exchange liquid pipeline of the refrigeration equipment improves the operation reliability. On the other hand, the sliding block is independently driven to effectively reduce the energy consumption. At the same time, because a magnetic field system is used to excite and demagnetize the two magnetic refrigeration beds, There is no need to configure a magnetic field system for each magnetic refrigeration bed, which greatly simplifies the overall structure of the magnetic refrigeration equipment, reduces the overall volume, and improves the energy efficiency ratio. At the same time, the two symmetrically arranged magnetic refrigeration assemblies can always demagnetize the two magnetic refrigeration beds during the reciprocating movement cycle of the slider, thereby effectively improving the refrigeration efficiency and reducing energy consumption. .

Further, a chute 221 is defined at the end of the intermediate magnet conducting body 22 , and the slider 1 is slidably connected in the chute 221 . Specifically, the slider 1 slides along the chute 221 to ensure smooth reciprocating movement of the slider 1, and the chute 221 can be a dovetail groove structure, and the corresponding cross section of the slider 1 is also a dovetail structure, so that the sliding The block 1 is installed and limited by the chute 221 , and at the same time, the magnetic conductor 11 on the slider 1 can better maintain a magnetic conduction state with the intermediate magnetic conductor 22 under the guidance of the chute 211 . Preferably, in order to make the magnet conductor 11 on the slider 1 well contact with the side magnet conductor 23, a guide groove 231 is provided at the end of the side magnet conductor 23; when the slider 1 slides, the magnet conductor 11 and the corresponding When the side magnetic conductive plates are in contact, the end of the slider 1 is located in the corresponding guide groove 231 . Specifically, the guide groove 231 can effectively increase the direct contact area between the magnetizer 11 and the side magnetizer 23 to ensure good magnetic conduction between the magnetizer 11 and the side magnetizer 23 . The sliding block 1 is guided to ensure the smooth sliding of the sliding block 1.

Furthermore, the magnetic conductor assembly further includes a driving device 12 for driving the sliding block 1 to move back and forth, and the driving device 12 is connected with the sliding block 1 . Specifically, the driving device 12 can drive the sliding block 1 to move back and forth, wherein the driving device 12 in this embodiment can use a linear motor, and the output end of the linear motor is connected to the sliding block 1; or, the driving device 12 includes a motor and a threaded rod , the slider 1 is provided with a threaded hole (not shown), and the threaded rod is threaded in the threaded hole. Specifically, the threaded rod is driven forward and reversed by the motor, and the cooperation between the threaded rod and the threaded hole will drive the slider 1 to move back and forth. Preferably, the length of the magnet conducting body 11 in this embodiment is less than the distance between the two side magnet conducting bodies 23 to prevent the slider 1 from contacting the two side magnet conducting bodies 23 at the same time, so as to ensure the reciprocating magnetic refrigeration component of this embodiment. Reliable operation.

Still further, one end of the magnetic refrigeration bed 24 is provided with a port 31 communicating with the interior of the magnetic refrigeration bed, and one end of the magnetic refrigeration bed 24 is provided with a suspended partition 32, and the partition 32 is located between the two ports 31 to connect the magnetic The interior of the refrigeration bed is divided into two connected heat exchange liquid flow channels 33, and the heat exchange liquid flow channels 33 are filled with magnetic working medium. Specifically, the partition 32 divides the interior of the magnetic refrigeration bed 24 into two communicating heat exchange liquid flow channels 33, wherein one heat exchange liquid flow channel 33 is connected to the port 31 on the corresponding side, and the other heat exchange liquid flow channel 33 and the port 31 on the corresponding side, the heat exchange liquid follows a U-shaped flow in the magnetic refrigeration bed 24, and the heat exchange liquid enters and exits from the same end of the magnetic refrigeration bed 24, which is more convenient for pipeline connection.

The working process of the reciprocating magnetic refrigeration component of this embodiment will be described below with reference to accompanying drawings 5 to 6: As shown in FIG. The magnetic conductor 22 is magnetically conductive, the magnetic refrigeration bed 24 on the left is demagnetized, and the heat exchange liquid inside is refrigerated; at the same time, the magnetic refrigeration bed 24 on the right in the figure is excited, and the heat exchange liquid inside is heated and treated . As shown in Fig. 6, after the slider 1 moves in the reverse direction, the upper and lower side magnetizers 23 on the right side of the figure are in magnetic conduction with the middle magnetizer 22 through the magnetizer 11, and the magnetic refrigeration bed 24 on the right side is demagnetized. Refrigeration treatment is performed on the heat exchange liquid inside; at the same time, the magnetic refrigeration bed 24 on the left side of the figure is excited to perform heating treatment on the heat exchange liquid inside.

In addition, the present invention also provides a magnetic refrigeration equipment, comprising a hot end radiator, a cold end radiator and a heat exchange liquid driving pump, and also includes the above-mentioned reciprocating magnetic refrigeration component, a magnetic refrigeration bed, a heat exchanger in the reciprocating magnetic refrigeration component The end radiator, the cold end radiator and the heat exchange liquid driving pump are connected together to form a heat exchange liquid circulation flow path.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims (8)

1. A reciprocating magnetic refrigeration component, characterized in that it comprises a slider and two magnetic refrigeration assemblies, the slider is a magnet isolation body, and the two side walls of the slider are provided with magnetic conductors that are set back, and the two The magnetic refrigeration assemblies are distributed on both sides of the slider; each magnetic refrigeration assembly includes a magnetic field system, a magnetic conductor assembly and two magnetic refrigeration beds, and each magnetic field system includes two oppositely arranged magnets , each of the magnet conductor assemblies includes a middle magnet conductor and two side magnet conductors, the side magnet conductors are fixed on the corresponding magnets, and the middle magnet conductor is located between the two side magnet conductors The magnetic refrigeration bed is located between the middle magnet conductor and the side magnet conductors, the slider is slidably connected between the two middle magnet conductors, and the magnet conductors are connected to the corresponding side magnet conductors. The magnetic refrigeration components are in contact; for a single magnetic refrigeration component, the corresponding magnetic conductive body is in contact with the middle magnetic conductive body and is in magnetic conductive contact with the two side magnetic conductive bodies alternately. 2 . The reciprocating magnetic refrigeration component according to claim 1 , wherein a chute is defined at the end of the intermediate magnetic conductor, and the slider is slidably connected in the chute. 3 . 3 . The reciprocating magnetic refrigeration component according to claim 2 , wherein the end of the side magnet conducting body is provided with a guide groove; when the magnet conducting body is in contact with the corresponding side magnet conducting plate , the magnetic conductors are located in the corresponding guide grooves. 4 . The reciprocating magnetic refrigeration component according to claim 1 , wherein the magnetic conductor assembly further comprises a driving device for driving the sliding block to move back and forth, and the driving device is connected with the sliding block. 5 . 5 . The reciprocating magnetic refrigeration component according to claim 4 , wherein the driving device is a linear motor, and the output end of the linear motor is connected to the slider; or, the driving device comprises a motor and a A threaded rod is provided with a threaded hole on the slider, and the threaded rod is threaded in the threaded hole. 6 . The reciprocating magnetic refrigeration component according to claim 1 , wherein the length of the magnetic conductor is smaller than the distance between the two side magnetic conductors. 7 . 7 . The reciprocating magnetic refrigeration component according to claim 1 , wherein one end of the magnetic refrigeration bed is provided with a port communicating with the interior of the magnetic refrigeration bed, and one end of the magnetic refrigeration bed is provided with a port. 8 . The partition plate is located between the two ports to separate the interior of the magnetic refrigeration bed into two communicating heat exchange liquid flow channels, and the heat exchange liquid flow channels are filled with magnetic working medium. 8. A magnetic refrigeration device, comprising a hot-end radiator, a cold-end radiator and a heat-exchange liquid-driven pump, and further comprising the reciprocating magnetic refrigeration component according to any one of claims 1-7, wherein the The magnetic refrigeration bed, the hot end radiator, the cold end radiator and the heat exchange liquid driving pump in the reciprocating magnetic refrigeration component are connected together to form a heat exchange liquid circulation flow path.