阅读说明：本技术 蓄冷器、蓄冷装置以及磁制冷系统 (Cold accumulator, cold accumulation device and magnetic refrigeration system ) 是由 路文博 于 2021-07-30 设计创作，主要内容包括：本申请提供了一种蓄冷器、蓄冷装置以及磁制冷系统。该蓄冷器包括壳体,壳体上设置有两个接头,接头能够与管路连接；壳体内形成有内腔和内流道,内腔用于容纳磁热材料,内流道上设置有两个第一挡板和两个第二挡板,第一挡板用于控制与其在同一侧的接头是否与内流道连通,第二挡板用于控制相邻蓄冷器的两个内流道是否连通。利用该蓄冷器,该蓄冷器包括挡板用于控制换热流体的流动方向,有利于磁制冷系统变换不同的制冷模块组合,从而有利于实现磁制冷系统不同换热形式的切换,继而有利于调节磁制冷系统的制冷能力。(The application provides a cold accumulator, a cold accumulation device and a magnetic refrigeration system. The regenerator comprises a shell, wherein two joints are arranged on the shell and can be connected with a pipeline; an inner cavity and an inner flow channel are formed in the shell, the inner cavity is used for containing a magnetocaloric material, two first baffles and two second baffles are arranged on the inner flow channel, the first baffles are used for controlling whether the joints on the same side with the first baffles are communicated with the inner flow channel, and the second baffles are used for controlling whether two inner flow channels of adjacent regenerators are communicated. By utilizing the cold accumulator, the cold accumulator comprises a baffle plate for controlling the flow direction of the heat exchange fluid, and is beneficial to the magnetic refrigeration system to change different refrigeration module combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and then being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.)

1. A cold accumulator is characterized by comprising a shell, wherein two joints are arranged on the shell and can be connected with a pipeline; an inner cavity and an inner flow channel are formed in the shell, the inner cavity is used for containing magnetocaloric materials, two first baffles and two second baffles are arranged on the inner flow channel, the first baffles are used for controlling whether the joints on the same side are communicated with the inner flow channel, and the second baffles are used for controlling whether the inner flow channel is communicated with the adjacent cold accumulator.

2. A regenerator as claimed in claim 1 wherein the first shutter is moved upwardly or downwardly to open or close the fluid passage between the junction and the inner flow passage on the same side thereof, and two adjacent second shutters of adjacent regenerators are moved upwardly or downwardly together to open or close the connection between the two inner flow passages of adjacent regenerators.

3. A cold storage device comprising an even number of cold storages according to claim 1 or 2.

4. A cold storage device according to claim 3, wherein said cold storages are joined in sequence to form a closed loop.

5. A cold storage device according to claim 4, wherein said cold storage device comprises an even number of refrigeration modules, each refrigeration module comprising an equal number of cold storages, the cold storages in each refrigeration module being successively coupled.

6. The cold storage device according to claim 5, wherein the refrigeration module comprises a cold accumulator, two first shutters of the cold accumulator are open, and two second shutters of the cold accumulator are closed; alternatively, the first and second electrodes may be,

the refrigeration module comprises a plurality of cold accumulators, the first baffle plates on the outer sides of the two cold accumulators at two ends are opened, the second baffle plates are closed, the other first baffle plates of the refrigeration module are closed, and the other second baffle plates of the refrigeration module are opened.

7. The cold thermal storage device according to claim 4, wherein an even number of the refrigeration modules of the cold thermal storage device are uniformly distributed along a circumferential direction of the cold thermal storage device.

8. A magnetic refrigeration system comprising the cold storage device as claimed in any one of claims 3 to 7.

9. The magnetic refrigeration system of claim 8 further comprising:

the hot end heat exchanger is used for releasing the heat generated by the cold accumulation device to the outside of the area to be refrigerated;

the cold end heat exchanger is used for releasing cold energy generated by the cold accumulation device to the area to be refrigerated;

a pump for driving a heat exchange fluid;

the constant temperature tank is used for providing constant temperature cooling water;

a cooler for cooling the heat exchange fluid flowing from the pump; and

and the exhaust tank is used for exhausting gas generated in the operation process of the magnetic refrigeration system.

10. The magnetic refrigeration system of claim 9 wherein the magnetic refrigeration system uses the refrigeration module of the cold storage device for refrigeration.

11. The magnetic refrigeration system of claim 10 wherein said cold storage device comprises two of said refrigeration modules connected in parallel between said hot side heat exchanger and said cold side heat exchanger; when one refrigeration module is in the demagnetization stage, the other refrigeration module is in the magnetization stage.

12. The magnetic refrigeration system of claim 10 wherein said cold storage device comprises four of said refrigeration modules connected in parallel between said hot side heat exchanger and said cold side heat exchanger; the four refrigeration modules are respectively a first refrigeration module, a second refrigeration module, a third refrigeration module and a fourth refrigeration module; when the first refrigeration module is in a cold flow stage, the second refrigeration module is in a hot flow stage, the third refrigeration module is in a demagnetization stage, and the fourth refrigeration module is in a magnetization stage.

Technical Field

The invention relates to the technical field of refrigeration, in particular to a cold accumulator, a cold accumulation device and a magnetic refrigeration system.

Background

The mainstream refrigeration technology at present is vapor compression, which has a bad influence on the environment. Therefore, people gradually shift their vision to the application of other green and new refrigeration technologies. The magnetic refrigeration technology has the characteristics of environmental protection and energy conservation, and undoubtedly has obvious advantages. Nowadays, magnetic refrigeration technology is increasingly gaining attention from research institutions in various countries due to its great commercial potential. Related experimental research is also competitively developed in various colleges and scientific research institutions. The research focus of the magnetic refrigeration technology is mainly on the development of magnetic working medium materials, the structure of a magnetic refrigerator and a heat exchange system.

The magnetic refrigeration technology utilizes the magnetocaloric effect of the magnetocaloric material to generate a refrigeration effect. The magnetocaloric material is repeatedly magnetized and demagnetized, the magnetic entropy inside the magnetocaloric material can be continuously reduced and increased, and the magnetocaloric material can release heat and absorb heat to the outside. When the external magnetic field is increased, the magnetocaloric material is magnetized, the magnetic entropy thereof is reduced, and heat is released to the outside. When the external magnetic field is removed, the magnetocaloric material demagnetizes, the magnetic entropy of the magnetocaloric material increases, and heat is absorbed from the outside. Theoretically, under the same conditions, the larger the change of the magnetic entropy is, the larger the heat exchange amount is. By utilizing the characteristic of the magnetocaloric material, heat exchange fluid can be introduced into the heat exchange system to take away heat and cold generated by the magnetocaloric material. The above processes are repeated continuously and connected by a specific circulation flow path to constitute a heat exchange assembly, thereby realizing continuous refrigeration.

A magnetic refrigeration system generally includes a magnetocaloric material, a magnetic field assembly, a heat exchange fluid, a regenerator, a drive mechanism, and a heat exchange assembly. The magnetic field component is used for repeatedly magnetizing and demagnetizing the magnetocaloric material. The regenerator is filled with a magnetocaloric material, and the heat exchange fluid and the magnetocaloric material perform heat conversion in the regenerator. The heat exchange assembly is used for realizing heat exchange between the heat exchange fluid and the external environment and between the heat exchange fluid and the space to be cooled. The driving mechanism is a power source of the magnetic refrigeration system and is used for realizing the relative movement of the magnetic field assembly and the cold accumulator or driving the heat exchange fluid to flow.

The cycle operation cycle of a magnetic refrigeration system is generally divided into four phases, which are respectively: the method comprises a magnetizing stage, a hot flowing stage, a demagnetizing stage and a cold flowing stage. The four phases are a period in which the magnetic refrigerator is cyclically operated. In the magnetizing stage, the magnet applies a magnetic field to the magnetocaloric material, the magnetic entropy of the magnetocaloric material is reduced, heat is released outwards, and the temperature rises. In the subsequent heat flowing stage, heat exchange fluid is introduced into the regenerator, and the heat exchange fluid carries away heat generated by the magnetocaloric material, so that the temperature of the magnetocaloric material is reduced. In the subsequent demagnetizing phase, the magnetic field is removed, the magnetic entropy of the magnetocaloric material increases due to demagnetization, heat needs to be absorbed from the outside, and the temperature drops. And in the final cold flow stage, the heat exchange fluid is introduced into the cold accumulator again, the magnetocaloric material cools the heat exchange fluid, so that the temperature of the heat exchange fluid is reduced, and the magnetic refrigeration system transfers the heat exchange fluid to the cold end heat exchanger for refrigeration.

In general, the cold fluid in the magnetic refrigeration system is a heat exchange fluid which absorbs the cold energy of the magnetocaloric material in the demagnetization process; accordingly, the hot fluid refers to a heat exchange fluid that absorbs heat of the magnetocaloric material during the magnetization process.

The curie temperature is a characteristic attribute of the magnetocaloric material, and refers to a critical temperature at which the magnetocaloric material is converted from ferromagnetism to paramagnetism, and is fixed after the magnetocaloric material is processed and manufactured. Under the condition of the same magnetic field, the magnetic entropy change of the magnetocaloric material at the Curie temperature is the largest, and the magnetocaloric effect is also the largest. Therefore, the curie temperature of the magnetocaloric material in a room temperature magnetic refrigeration system should be close to its operating temperature.

The actual working performance of the magnetic refrigeration system is closely related to the number of cold accumulators in the system and the system form, and the number of different cold accumulators inevitably causes great difference in the composition form of the magnetic refrigeration system. However, the existing magnetic refrigeration system is not unified in model form because the related structure is not mature yet, and the magnetic refrigeration system relates to a magnetic field assembly, a regenerator, a driving mechanism, a heat exchange assembly and the like, and the devices are complex. The magnetic refrigeration system is not suitable for repeated disassembly after the installation, so the structure of the cold accumulator is fixed after the installation, the form of the heat exchange system is also fixed, the change is not easy during the operation, and the refrigeration capacity of the magnetic refrigeration system is not easy to adjust.

Disclosure of Invention

To the problems in the prior art, the present application provides a regenerator, a cold storage device, and a magnetic refrigeration system. The regenerator comprises a baffle plate for controlling the flow direction of heat exchange fluid, and is beneficial to the magnetic refrigeration system to change different refrigeration module combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and further being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

In a first aspect, the invention provides a regenerator comprising a housing provided with two joints connectable to a pipeline; an inner cavity and an inner flow channel are formed in the shell, the inner cavity is used for containing magnetocaloric materials, two first baffles and two second baffles are arranged on the inner flow channel, the first baffles are used for controlling whether the joints on the same side are communicated with the inner flow channel, and the second baffles are used for controlling whether the inner flow channel is communicated with the adjacent cold accumulator. By utilizing the cold accumulator, the cold accumulator comprises a baffle plate for controlling the flow direction of the heat exchange fluid, and is beneficial to the magnetic refrigeration system to change different refrigeration module combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and then being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment of the first aspect, the first shutter opens or closes by moving upward or downward to open or close the fluid passage between the joint and the inner flow passage on the same side thereof, and two adjacent second shutters of adjacent regenerators open or close by moving upward or downward together to open or close the connection between two inner flow passages of adjacent regenerators. By this embodiment it is advantageous to control the flow direction of the heat exchange fluid by controlling the opening or closing of the baffles.

In a second aspect, the present invention also provides a cold storage device comprising an even number of cold accumulators as described in the first aspect and any embodiment thereof. By utilizing the cold accumulation device, the cold accumulator comprises the baffle plate to control the flow direction of the heat exchange fluid, and the magnetic refrigeration system can change different refrigeration module combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and then being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment of the second aspect, the regenerators are joined in series to form a closed loop. Through this embodiment, the regenerator links up in proper order to the inner flow channel of adjacent regenerator can be through opening two corresponding second baffles and intercommunication each other, is favorable to controlling heat transfer fluidic flow direction, in order to be favorable to the different refrigeration module combination of magnetic refrigeration system transform, thereby is favorable to realizing the switching of the different heat transfer forms of magnetic refrigeration system, is favorable to adjusting magnetic refrigeration system's refrigerating capacity then.

In one embodiment of the second aspect, the cold storage device comprises an even number of refrigeration modules, each refrigeration module comprises an equal number of cold storages, and the cold storages in each refrigeration module are sequentially connected. By this embodiment, it is advantageous to ensure the normal operation of the cold storage device.

In one embodiment of the second aspect, the refrigeration module comprises a regenerator, two first shutters of which are open and two second shutters of which are closed; or the refrigeration module comprises a plurality of cold accumulators, the first baffle plates on the outer sides of the two cold accumulators at the two ends are opened, the second baffle plates are closed, the other first baffle plates of the refrigeration module are closed, and the other second baffle plates of the refrigeration module are opened. By this embodiment it is facilitated that the heat exchange fluid flows in from one end of the refrigeration module and out from the other end of the refrigeration module.

In one embodiment of the second aspect, an even number of refrigeration modules of the cold storage device are evenly distributed along a circumferential direction of the cold storage device. Through the embodiment, when one refrigeration module is in the magnetizing state, the refrigeration module which is symmetrical to the center of the refrigeration module is in the demagnetizing state, so that the normal work of the cold accumulation device is ensured.

In a third aspect, the present invention also provides a magnetic refrigeration system comprising the cold storage device of the second aspect and any of its embodiments. By utilizing the magnetic refrigeration system, the cold accumulator comprises the baffle plate to control the flow direction of the heat exchange fluid, and the magnetic refrigeration system is favorable for changing different refrigeration module combinations, thereby being favorable for realizing the switching of different heat exchange forms of the magnetic refrigeration system and further being favorable for adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment of the third aspect, the magnetic refrigeration system further comprises: the hot end heat exchanger is used for releasing the heat generated by the cold accumulation device to the outside of the area to be refrigerated; the cold end heat exchanger is used for releasing cold energy generated by the cold accumulation device to the area to be refrigerated; a pump for driving a heat exchange fluid; the constant temperature tank is used for providing constant temperature cooling water; a cooler for cooling the heat exchange fluid flowing from the pump; and the exhaust tank is used for exhausting gas generated in the operation process of the magnetic refrigeration system. By the embodiment, the normal work of the magnetic refrigeration system is facilitated.

In one embodiment of the third aspect, the magnetic refrigeration system uses the refrigeration module of the cold storage device for refrigeration. Through this embodiment, be favorable to magnetic refrigeration system to utilize the refrigeration module to refrigerate.

In one embodiment of the third aspect, the cold storage device comprises two of the refrigeration modules connected in parallel between the hot side heat exchanger and the cold side heat exchanger; when one refrigeration module is in the demagnetization stage, the other refrigeration module is in the magnetization stage. The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising two refrigeration modules, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators in the refrigeration modules.

In one embodiment of the third aspect, the cold storage device comprises four of the refrigeration modules, and the four refrigeration modules are connected in parallel between the hot side heat exchanger and the cold side heat exchanger; the four refrigeration modules are respectively a first refrigeration module, a second refrigeration module, a third refrigeration module and a fourth refrigeration module; when the first refrigeration module is in a cold flow stage, the second refrigeration module is in a hot flow stage, the third refrigeration module is in a demagnetization stage, and the fourth refrigeration module is in a magnetization stage. The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising four refrigeration modules, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators in the refrigeration modules.

The application provides a regenerator, cold-storage device and magnetism refrigerating system compares in prior art, has following beneficial effect.

1. By utilizing the cold accumulator, the cold accumulator comprises a baffle plate for controlling the flow direction of the heat exchange fluid, and is beneficial to the magnetic refrigeration system to change different refrigeration module combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and then being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

2. The cold accumulators are sequentially connected to form a closed ring, so that the inner flow channels of the adjacent cold accumulators can be mutually communicated by opening the corresponding two second baffles, the flowing direction of heat exchange fluid is favorably controlled, the magnetic refrigeration system is favorably changed to combine different refrigeration modules, the switching of different heat exchange forms of the magnetic refrigeration system is favorably realized, and the refrigeration capacity of the magnetic refrigeration system is favorably adjusted.

3. The refrigerating capacity of the magnetic refrigerating system can be adjusted by adjusting the number of the cold accumulators in the refrigerating modules and the number of the refrigerating modules.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:

fig. 1 shows a front view of a regenerator in accordance with an embodiment of the invention;

figure 2 shows a side view of a regenerator according to an embodiment of the present invention;

fig. 3 shows a cold storage device having two refrigeration modules, each having a cold storage device, according to an embodiment of the invention;

fig. 4 shows a cold storage device having two refrigeration modules, each having two cold storages, according to an embodiment of the present invention;

fig. 5 shows a cold storage device having two refrigeration modules, each having three cold storages, according to an embodiment of the present invention;

fig. 6 shows a cold storage device having four refrigeration modules, each having a cold storage device, according to an embodiment of the invention;

fig. 7 shows a cold storage device having four refrigeration modules, each having two cold storage devices, according to an embodiment of the invention;

fig. 8 shows a cold storage device having four refrigeration modules, each having three cold storages, according to an embodiment of the present invention;

FIG. 9 shows a magnetic refrigeration system having a cold storage device with two refrigeration modules in accordance with an embodiment of the present invention;

fig. 10 shows a magnetic refrigeration system having four refrigeration modules for a cold storage device in accordance with an embodiment of the present invention.

List of reference numerals:

1-a cold accumulator; 2-a shell; 3-a linker; 4-inner cavity; 5-a first baffle; 6-a second baffle; 7-a refrigeration module; 8-a first refrigeration module; 9-a second refrigeration module; 10-a third refrigeration module; 11-a fourth refrigeration module; 12-a hot side heat exchanger; 13-cold side heat exchanger; 14-a pump; 15-a thermostatic bath; 16-a cooler; 17-an exhaust tank; 18-a first solenoid valve; 19-a second solenoid valve; 20-a third solenoid valve; 21-a fourth solenoid valve; 22-a fifth solenoid valve; 23-eleventh solenoid valve; 24-a twelfth solenoid valve; 25-a thirteenth solenoid valve; 26-a fourteenth solenoid valve; 27-a fifteenth solenoid valve; 28-sixteenth solenoid valve; 29-seventeenth solenoid valve; 30-eighteenth electromagnetic valve; 32-a first one-way valve; 33-a second one-way valve; 34-a third one-way valve; 35-a fourth one-way valve; 36-eleventh one-way valve; 37-a twelfth one-way valve; 38-a thirteenth one-way valve; 39-a fourteenth one-way valve; 40-a fifteenth one-way valve; 41-sixteenth one-way valve; 42-a seventeenth one-way valve; 43-eighteenth one-way valve; 44-cold storage device.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1 and 2, the present embodiment provides a regenerator 1, the regenerator 1 includes a housing 2, two joints 3 are arranged on the housing 2, and the joints 3 can be connected with a pipeline; an inner cavity 4 and an inner flow channel are formed in the shell 2, the inner cavity 4 is used for containing a magnetocaloric material, two first baffles 5 and two second baffles 6 are arranged on the inner flow channel, the first baffles 5 are used for controlling whether the joints 3 on the same side are communicated with the inner flow channel, and the second baffles 6 are used for controlling whether two inner flow channels of adjacent cold accumulators 1 are communicated.

The regenerator 1 has two side walls, a first side and a second side respectively. The second side is forward of the first side in a counter-clockwise direction. A first baffle 5 and a second baffle 6 are arranged on the first side of the regenerator 1, and a first baffle 5 and a second baffle 6 are arranged on the second side of the regenerator 1.

When the first side first baffle 5 of the regenerator 1 is opened, the second side first baffle 5 is opened, and the first side second baffle 6 is closed and the second side second baffle 6 is closed, the heat exchange fluid in the pipeline enters the regenerator 1 through the first side joint 3, enters the inner flow channel through the first side first baffle 5, heats or cools the magnetocaloric material in the inner cavity 4, flows out of the inner flow channel through the second side first baffle 5, and flows out of the regenerator 1 through the second side joint 3; or, the heat exchange fluid in the pipeline enters the regenerator 1 through the second side joint 3, enters the inner flow channel through the second side first baffle 5, is heated or cooled for the magnetocaloric material in the inner cavity 4, flows out of the inner flow channel through the first side first baffle 5, and flows out of the regenerator 1 through the first side joint 3.

When the first baffle 5 at the first side of the regenerator 1 is closed, the first baffle 5 at the second side is closed, and the second baffle 6 at the first side is opened and the second baffle 6 at the second side is opened, the heat exchange fluid enters the inner flow channel from the second baffle 6 at the first side of the regenerator 1 and flows out from the second baffle 6 at the second side; or, the heat exchange fluid enters the inner flow channel from the second baffle 6 on the second side of the regenerator 1 and flows out from the second baffle 6 on the first side; due to the closing of the first side first baffle 5 and the closing of the second side first baffle 5, the heat exchange fluid does not flow through the joint 3.

When the first side first baffle 5 of the regenerator 1 is opened and the second side first baffle 5 is closed, and the first side second baffle 6 is closed and the second side second baffle 6 is opened, the heat exchange fluid flows into the regenerator 1 from the first side joint 3, enters the inner flow passage through the first side first baffle 5 and flows out of the regenerator 1 from the second side second baffle 6; alternatively, the heat exchange fluid flows into the regenerator 1 from the second baffle 6 on the second side, enters the first side connector 3 through the first baffle 5 on the first side, and flows out of the regenerator 1.

When the first side first baffle 5 of the regenerator 1 is closed and the second side first baffle 5 is opened, and the first side second baffle 6 is opened and the second side second baffle 6 is closed, the heat exchange fluid flows into the regenerator 1 from the second side joint 3, enters the inner flow passage through the second side first baffle 5, flows out of the regenerator 1 from the first side second baffle 6, and enters the adjacent regenerator 1; or, the heat exchange fluid flows into the inner flow channel of the regenerator 1 from the adjacent regenerator 1 through the second baffle 6 on the first side, then enters the second side joint 3 through the first baffle 5 on the second side, and flows out of the regenerator 1.

By utilizing the regenerator 1 of the embodiment, the regenerator 1 comprises the baffle plate for controlling the flow direction of the heat exchange fluid, and is beneficial to the magnetic refrigeration system to change different refrigeration module 7 combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and further being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment, the first shutter 5 opens or closes by moving upward or downward to open or close the fluid passage between the joint 3 and the inner flow passage on the same side thereof, and the adjacent two second shutters 6 of the adjacent regenerators 1 open or close by moving upward or downward together to open or close the connection between the two inner flow passages of the adjacent regenerators 1.

The first baffle 5 and the second baffle 6 can be driven by a motor. The motor can be arranged on the shell 2 of the regenerator 1, and a gear is arranged on a motor shaft and is used for being matched with the rack on the baffle. When the baffle needs to be opened, the controller controls the motor to rotate, and the motor shaft drives the baffle to move upwards through the gear and rack structure so as to open the baffle. Similarly, when the baffle needs to be closed, the controller controls the motor to rotate reversely, and the motor shaft drives the baffle to move downwards through the gear and rack structure so as to close the baffle.

Similarly, the first shutter 5 and the second shutter 6 may be driven by electromagnetic actuators.

By this embodiment it is advantageous to control the flow direction of the heat exchange fluid by controlling the opening or closing of the baffles.

The present embodiment also provides a cold storage device 44, as shown in fig. 3 to 8, the cold storage device 44 including an even number of the above-described cold accumulators 1.

Two cold accumulators 1 symmetrically arranged by the central point of the cold accumulation device 44 are a group, and the phases of the two cold accumulators 1 in the group are opposite, namely when one cold accumulator 1 is in the magnetizing phase, the other cold accumulator 1 is in the demagnetizing phase; while one regenerator 1 is in the hot flow phase, the other regenerator 1 is in the cold flow phase, thereby ensuring the normal operation of the cold storage device 44.

By utilizing the cold accumulation device 44, the cold accumulator 1 comprises a baffle plate to control the flowing direction of the heat exchange fluid, which is beneficial to the magnetic refrigeration system to change different refrigeration module 7 combinations, thereby being beneficial to realizing the switching of different heat exchange forms of the magnetic refrigeration system and further being beneficial to adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment, as shown in fig. 3 to 8, the regenerators 1 are joined in series to form a closed loop.

Through this embodiment, regenerator 1 links up in proper order to adjacent regenerator 1's interior runner can be through opening two corresponding second baffles 6 and communicate each other, is favorable to controlling heat transfer fluid's flow direction, in order to be favorable to the different refrigeration module 7 combinations of magnetic refrigeration system transform, thereby is favorable to realizing the switching of the different heat transfer forms of magnetic refrigeration system, is favorable to adjusting magnetic refrigeration system's refrigerating capacity then.

In one embodiment, as shown in fig. 3 to 8, the cold storage device 44 includes an even number of cooling modules 7, each cooling module 7 includes an equal number of cold storages 1, and the cold storages 1 in each cooling module 7 are sequentially connected.

When the cold storage device 44 is in use, only the refrigeration module 7 is in operation.

As shown in fig. 3, the cold storage device 44 includes 12 cold storages 1. Wherein the cold storage device 44 comprises two refrigeration modules 7, each refrigeration module 7 comprising one cold storage 1.

As shown in fig. 4, the cold storage device 44 includes 12 cold storages 1. Wherein the cold storage device 44 comprises two refrigeration modules 7, each refrigeration module 7 comprising two cold storages 1.

As shown in fig. 5, the cold storage device 44 includes 12 cold storages 1. Wherein, the cold storage device 44 comprises two refrigeration modules 7, and each refrigeration module 7 comprises three cold storages 1.

As shown in fig. 6, the cold storage device 44 includes 12 cold storages 1. Wherein, the cold storage device 44 comprises four refrigeration modules 7, and each refrigeration module 7 comprises one cold storage device 1.

As shown in fig. 7, the cold storage device 44 includes 12 cold storages 1. Wherein, the cold storage device 44 comprises four refrigeration modules 7, and each refrigeration module 7 comprises two cold storages 1.

As shown in fig. 8, the cold storage device 44 includes 12 cold storages 1. Wherein, the cold storage device 44 comprises four refrigeration modules 7, and each refrigeration module 7 comprises three cold storages 1.

When the cold storage device 44 includes two refrigeration modules 7, one refrigeration module 7 is in a magnetized state and the other refrigeration module 7 is in a demagnetized state.

When the cold storage device 44 includes four refrigeration modules 7, the four refrigeration modules 7 sequentially enter four stages, and the stages of the refrigeration modules 7 are different from each other.

With this embodiment, it is advantageous to ensure proper operation of the cold storage device 44.

In one embodiment, the refrigeration module 7 comprises one regenerator 1, the two first shutters 5 of the regenerator 1 being open and the two second shutters 6 of the regenerator 1 being closed; or, the refrigeration module 7 includes a plurality of regenerators 1, the first baffle 5 outside two regenerators 1 at both ends is opened and the second baffle 6 is closed, and the other first baffles 5 of the refrigeration module 7 are all closed and the other second baffles 6 of the refrigeration module 7 are all opened.

The refrigeration module 7 comprises two ends, a first end of which is a first side of the regenerator 1 and a second end of which is a second side of the regenerator 1. The heat exchange fluid flows in from the first end of the refrigeration module 7 and out from the second end of the refrigeration module 7, or the heat exchange fluid flows in from the second end of the refrigeration module 7 and out from the first end of the refrigeration module 7.

This embodiment facilitates the flow of heat exchange fluid from one end of the refrigeration module 7 and out of the other end of the refrigeration module 7.

In one embodiment, an even number of refrigeration modules 7 of the cold storage device 44 are evenly distributed along the circumference of the cold storage device 44.

With this embodiment, it is possible to ensure that when one refrigeration module 7 is in the magnetized state, the refrigeration module 7 that is symmetrical with the center thereof is in the demagnetized state, thereby ensuring the normal operation of the cold storage device 44.

The present embodiment also provides a magnetic refrigeration system including the above-described cold storage device 44.

By utilizing the magnetic refrigeration system, the cold accumulator 1 comprises a baffle plate to control the flow direction of the heat exchange fluid, and the magnetic refrigeration system is favorable for changing different refrigeration module 7 combinations, thereby being favorable for realizing the switching of different heat exchange forms of the magnetic refrigeration system and further being favorable for adjusting the refrigeration capacity of the magnetic refrigeration system.

In one embodiment, as shown in fig. 9 and 10, the magnetic refrigeration system further comprises: a hot-side heat exchanger 12 for releasing heat generated by the cold storage device 44 to the outside of the area to be refrigerated; the cold end heat exchanger 13 is used for releasing the cold energy generated by the cold accumulation device 44 to the area to be refrigerated; a pump 14 for driving a heat exchange fluid; a constant temperature bath 15 for supplying constant temperature cooling water; a cooler 16 for cooling the heat exchange fluid flowing from the pump 14; and a discharge tank 17 for discharging gas generated during the operation of the magnetic refrigeration system.

By the embodiment, the normal work of the magnetic refrigeration system is facilitated.

In one embodiment, the magnetic refrigeration system uses the refrigeration module 7 of the cold thermal storage device 44 for refrigeration.

When the cold storage device 44 includes two refrigeration modules 7, one refrigeration module 7 is in a magnetized state and the other refrigeration module 7 is in a demagnetized state.

When the cold storage device 44 includes four refrigeration modules 7, the four refrigeration modules 7 sequentially enter four stages, and the stages of the refrigeration modules 7 are different from each other.

By this embodiment, the magnetic refrigeration system is facilitated to utilize the refrigeration module 7 for refrigeration.

In one embodiment, the cold storage device 44 comprises two refrigeration modules 7, the two refrigeration modules 7 being connected in parallel between the warm side heat exchanger 12 and the cold side heat exchanger 13; when one refrigeration module 7 is in the demagnetization phase, the other refrigeration module 7 is in the magnetization phase.

As shown in fig. 9, the magnetic refrigeration system includes five solenoid valves, four check valves, and two refrigeration modules 7. The five solenoid valves are a first solenoid valve 18, a second solenoid valve 19, a third solenoid valve 20, a fourth solenoid valve 21, and a fifth solenoid valve 22, respectively. The four check valves are a first check valve 32, a second check valve 33, a third check valve 34, and a fourth check valve 35, respectively. The two refrigeration modules 7 are respectively a first refrigeration module 8 and a second refrigeration module 9.

The working states of the first refrigeration module 8 and the second refrigeration module 9 are opposite when the magnetic refrigeration system operates, namely when the first refrigeration module 8 is in the magnetizing stage, the second refrigeration module 9 is in the demagnetizing stage; when the first refrigeration module 8 is in the demagnetization stage, the second refrigeration module 9 is in the magnetization stage; when the first refrigeration module 8 is in the hot flow phase, the second refrigeration module 9 is in the cold flow phase; when the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase.

As shown in fig. 3 to 5, the first and second refrigeration modules 8 and 9 are centrosymmetric.

Alternatively, as shown in fig. 3, the first and second refrigeration modules 8 and 9 each include one regenerator 1.

Alternatively, as shown in fig. 4, the first and second refrigeration modules 8 and 9 each include two regenerators 1.

Alternatively, as shown in fig. 5, the first and second refrigeration modules 8 and 9 each include three regenerators 1.

Thereby being beneficial to adjusting the refrigerating capacity of the magnetic refrigerating system, and when the number of the cold accumulators 1 in the refrigerating module 7 is more, the refrigerating capacity of the magnetic refrigerating system is stronger.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the demagnetization phase, the second refrigeration module 9 is in the magnetization phase, the first, second, third and fourth electromagnetic valves are all closed, the fifth electromagnetic valve 22 is opened, and at this time, the magnetic refrigeration system is in the internal circulation process.

In the second phase of the magnetic refrigeration system cycle, when the first refrigeration module 8 is in the cold flow phase and the second refrigeration module 9 is in the hot flow phase, the first solenoid valve 18 and the second solenoid valve 19 are open, the third to fifth solenoid valves 22 are closed, and the flow path of the heat exchange fluid is, pump 14 → cooler 16 → first solenoid valve 18 → first refrigeration module 8 → first check valve 32 → cold side heat exchanger 13 → third check valve 34 → second refrigeration module 9 → second solenoid valve 19 → hot side heat exchanger 12 → exhaust tank 17 → pump 14.

In the third phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the magnetizing phase, the second refrigeration module 9 is in the demagnetizing phase, the first, second, third and fourth electromagnetic valves are all closed, the fifth electromagnetic valve 22 is opened, and at this time, the magnetic refrigeration system is in the internal circulation process.

In the fourth phase of the magnetic refrigeration system operation cycle, when the first refrigeration module 8 is in the hot flow phase and the second refrigeration module 9 is in the cold flow phase, the first solenoid valve 18, the second solenoid valve 19 and the fifth solenoid valve 22 are closed, the third solenoid valve 20 and the fourth solenoid valve 21 are open, and the flow path of the heat exchange fluid is, pump 14 → cooler 16 → third solenoid valve 20 → second refrigeration module 9 → fourth check valve 35 → cold side heat exchanger 13 → second check valve 33 → first refrigeration module 8 → fourth solenoid valve 21 → hot side heat exchanger 12 → exhaust tank 17 → pump 14.

At this point, the four phase cycle of one cycle ends, and the subsequent cycle operation repeats the cycle process.

The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising two refrigeration modules 7, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators 1 in the refrigeration modules 7.

In one embodiment, the cold storage device 44 comprises four refrigeration modules 7, the four refrigeration modules 7 being connected in parallel between the warm side heat exchanger 12 and the cold side heat exchanger 13; the four refrigeration modules 7 are respectively a first refrigeration module 8, a second refrigeration module 9, a third refrigeration module 10 and a fourth refrigeration module 11; when the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase.

As shown in fig. 10, the magnetic refrigeration system includes nine solenoid valves, eight check valves, and four refrigeration modules 7. The nine electromagnetic valves are an eleventh electromagnetic valve 23, a twelfth electromagnetic valve 24, a thirteenth electromagnetic valve 25, a fourteenth electromagnetic valve 26, a fifteenth electromagnetic valve 27, a sixteenth electromagnetic valve 28, a seventeenth electromagnetic valve 29, an eighteenth electromagnetic valve 30, and a nineteenth electromagnetic valve, respectively. The eight check valves are an eleventh check valve 36, a twelfth check valve 37, a thirteenth check valve 38, a fourteenth check valve 39, a fifteenth check valve 40, a sixteenth check valve 41, a seventeenth check valve 42, and an eighteenth check valve 43, respectively. The four refrigeration modules 7 are respectively a first refrigeration module 8, a second refrigeration module 9, a third refrigeration module 10 and a fourth refrigeration module 11.

The working states of the first refrigeration module 8 and the second refrigeration module 9 are opposite when the magnetic refrigeration system operates; and the working states of the third refrigeration module 10 and the fourth refrigeration module 11 are opposite when the magnetic refrigeration system is operated.

As shown in fig. 6 to 8, the first and second refrigeration modules 8 and 9 are centrosymmetric, and the third and fourth refrigeration modules 10 and 11 are centrosymmetric.

Alternatively, as shown in fig. 6, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include one regenerator 1.

Alternatively, as shown in fig. 7, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include two regenerators 1.

Alternatively, as shown in fig. 8, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include three regenerators 1.

Therefore, the refrigerating capacity of the magnetic refrigerating system can be adjusted, and the refrigerating capacity of the magnetic refrigerating system is stronger when the number of the cold accumulators 1 and the number of the refrigerating modules 7 in the refrigerating modules 7 are larger.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase. The eleventh solenoid valve 23 and the twelfth solenoid valve 24 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → eleventh solenoid valve 23 → first refrigeration module 8 → eleventh check valve 36 → cold side heat exchanger 13 → thirteenth check valve 38 → second refrigeration module 9 → twelfth solenoid valve 24 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase. The eleventh solenoid valve 23 and the twelfth solenoid valve 24 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → eleventh solenoid valve 23 → first refrigeration module 8 → eleventh check valve 36 → cold side heat exchanger 13 → thirteenth check valve 38 → second refrigeration module 9 → twelfth solenoid valve 24 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the second phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the magnetization phase, the second refrigeration module 9 is in the demagnetization phase, the third refrigeration module 10 is in the cold flow phase, and the fourth refrigeration module 11 is in the hot flow phase. The fifteenth solenoid valve 27 and the sixteenth solenoid valve 28 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → fifteenth solenoid valve 27 → third refrigeration module 10 → fifteenth check valve 40 → cold side heat exchanger 13 → seventeenth check valve 42 → fourth refrigeration module 11 → sixteenth solenoid valve 28 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the third phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the hot flow phase, the second refrigeration module 9 is in the cold flow phase, the third refrigeration module 10 is in the magnetization phase, and the fourth refrigeration module 11 is in the demagnetization phase. The thirteenth solenoid valve 25 and the fourteenth solenoid valve 26 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → thirteenth solenoid valve 25 → second refrigeration module 9 → fourteenth check valve 39 → cold side heat exchanger 13 → twelfth check valve 37 → first refrigeration module 8 → fourteenth solenoid valve 26 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the fourth phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the demagnetization phase, the second refrigeration module 9 is in the magnetization phase, the third refrigeration module 10 is in the hot flow phase, and the fourth refrigeration module 11 is in the cold flow phase. The seventeenth solenoid valve 29 and the eighteenth solenoid valve 30 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → seventeenth solenoid valve 29 → fourth refrigeration module 11 → eighteenth check valve 43 → cold side heat exchanger 13 → sixteenth check valve 41 → third refrigeration module 10 → eighteenth solenoid valve 30 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

At this point, the four phase cycle of one cycle ends, and the subsequent cycle operation repeats the cycle process.

The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising four refrigeration modules 7, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators 1 in the refrigeration modules 7.

Specifically, as the number of the regenerators 1 in the refrigeration module 7 and the number of the refrigeration modules 7 increase, the filling amount of the magnetocaloric material in the refrigeration module 7 also increases, the refrigeration capacity of the magnetic refrigeration system also increases, the flow length of the heat exchange fluid in the refrigeration module 7 also increases, and the flow time and the heat exchange time of the heat exchange fluid in the refrigeration module 7 are further increased.

By changing the number of the refrigeration modules 7 and the number of the cold accumulators 1, the purpose of adjusting the refrigeration performance can be realized on the premise of not replacing the cold accumulation device 44, and then the magnetic refrigeration system can flexibly change according to the load requirement or the actual condition, so that the flexibility and the adaptability of the magnetic refrigeration system are enhanced.

Example one

As shown in fig. 1 and 2, the present embodiment provides a regenerator 1, the regenerator 1 includes a housing 2, two joints 3 are arranged on the housing 2, and the joints 3 can be connected with a pipeline; an inner cavity 4 and an inner flow channel are formed in the shell 2, the inner cavity 4 is used for containing a magnetocaloric material, two first baffles 5 and two second baffles 6 are arranged on the inner flow channel, the first baffles 5 are used for controlling whether the joints 3 on the same side are communicated with the inner flow channel, and the second baffles 6 are used for controlling whether two inner flow channels of adjacent cold accumulators 1 are communicated.

The regenerator 1 has two side walls, a first side and a second side respectively. The second side is forward of the first side in a counter-clockwise direction. A first baffle 5 and a second baffle 6 are arranged on the first side of the regenerator 1, and a first baffle 5 and a second baffle 6 are arranged on the second side of the regenerator 1.

When the first side first baffle 5 of the regenerator 1 is opened, the second side first baffle 5 is opened, and the first side second baffle 6 is closed and the second side second baffle 6 is closed, the heat exchange fluid in the pipeline enters the regenerator 1 through the first side joint 3, enters the inner flow channel through the first side first baffle 5, heats or cools the magnetocaloric material in the inner cavity 4, flows out of the inner flow channel through the second side first baffle 5, and flows out of the regenerator 1 through the second side joint 3; or, the heat exchange fluid in the pipeline enters the regenerator 1 through the second side joint 3, enters the inner flow channel through the second side first baffle 5, is heated or cooled for the magnetocaloric material in the inner cavity 4, flows out of the inner flow channel through the first side first baffle 5, and flows out of the regenerator 1 through the first side joint 3.

When the first baffle 5 at the first side of the regenerator 1 is closed, the first baffle 5 at the second side is closed, and the second baffle 6 at the first side is opened and the second baffle 6 at the second side is opened, the heat exchange fluid enters the inner flow channel from the second baffle 6 at the first side of the regenerator 1 and flows out from the second baffle 6 at the second side; or, the heat exchange fluid enters the inner flow channel from the second baffle 6 on the second side of the regenerator 1 and flows out from the second baffle 6 on the first side; due to the closing of the first side first baffle 5 and the closing of the second side first baffle 5, the heat exchange fluid does not flow through the joint 3.

When the first side first baffle 5 of the regenerator 1 is opened and the second side first baffle 5 is closed, and the first side second baffle 6 is closed and the second side second baffle 6 is opened, the heat exchange fluid flows into the regenerator 1 from the first side joint 3, enters the inner flow passage through the first side first baffle 5 and flows out of the regenerator 1 from the second side second baffle 6; alternatively, the heat exchange fluid flows into the regenerator 1 from the second baffle 6 on the second side, enters the first side connector 3 through the first baffle 5 on the first side, and flows out of the regenerator 1.

When the first side first baffle 5 of the regenerator 1 is closed and the second side first baffle 5 is opened, and the first side second baffle 6 is opened and the second side second baffle 6 is closed, the heat exchange fluid flows into the regenerator 1 from the second side joint 3, enters the inner flow passage through the second side first baffle 5, flows out of the regenerator 1 from the first side second baffle 6, and enters the adjacent regenerator 1; or, the heat exchange fluid flows into the inner flow channel of the regenerator 1 from the adjacent regenerator 1 through the second baffle 6 on the first side, then enters the second side joint 3 through the first baffle 5 on the second side, and flows out of the regenerator 1.

Utilize regenerator 1 of this embodiment, this regenerator 1 includes that the baffle is used for controlling heat transfer fluid's flow direction, is favorable to the different refrigeration module 7 combinations of magnetic refrigeration system transform to be favorable to realizing the switching of the different heat transfer forms of magnetic refrigeration system, be favorable to adjusting magnetic refrigeration system's refrigerating capacity then.

Example two

In the present embodiment, the cold storage device 44 includes two refrigeration modules 7, and the two refrigeration modules 7 are connected in parallel between the hot-end heat exchanger 12 and the cold-end heat exchanger 13; when one refrigeration module 7 is in the demagnetization phase, the other refrigeration module 7 is in the magnetization phase.

As shown in fig. 9, the magnetic refrigeration system includes five solenoid valves, four check valves, and two refrigeration modules 7. The five solenoid valves are a first solenoid valve 18, a second solenoid valve 19, a third solenoid valve 20, a fourth solenoid valve 21, and a fifth solenoid valve 22, respectively. The four check valves are a first check valve 32, a second check valve 33, a third check valve 34, and a fourth check valve 35, respectively. The two refrigeration modules 7 are respectively a first refrigeration module 8 and a second refrigeration module 9.

The working states of the first refrigeration module 8 and the second refrigeration module 9 are opposite when the magnetic refrigeration system operates, namely when the first refrigeration module 8 is in the magnetizing stage, the second refrigeration module 9 is in the demagnetizing stage; when the first refrigeration module 8 is in the demagnetization stage, the second refrigeration module 9 is in the magnetization stage; when the first refrigeration module 8 is in the hot flow phase, the second refrigeration module 9 is in the cold flow phase; when the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase.

As shown in fig. 3 to 5, the first and second refrigeration modules 8 and 9 are centrosymmetric.

Alternatively, as shown in fig. 3, the first and second refrigeration modules 8 and 9 each include one regenerator 1.

Alternatively, as shown in fig. 4, the first and second refrigeration modules 8 and 9 each include two regenerators 1.

Alternatively, as shown in fig. 5, the first and second refrigeration modules 8 and 9 each include three regenerators 1.

Thereby being beneficial to adjusting the refrigerating capacity of the magnetic refrigerating system, and when the number of the cold accumulators 1 in the refrigerating module 7 is more, the refrigerating capacity of the magnetic refrigerating system is stronger.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the demagnetization phase, the second refrigeration module 9 is in the magnetization phase, the first, second, third and fourth electromagnetic valves are all closed, the fifth electromagnetic valve 22 is opened, and at this time, the magnetic refrigeration system is in the internal circulation process.

In the second phase of the magnetic refrigeration system cycle, when the first refrigeration module 8 is in the cold flow phase and the second refrigeration module 9 is in the hot flow phase, the first solenoid valve 18 and the second solenoid valve 19 are open, the third to fifth solenoid valves 22 are closed, and the flow path of the heat exchange fluid is, pump 14 → cooler 16 → first solenoid valve 18 → first refrigeration module 8 → first check valve 32 → cold side heat exchanger 13 → third check valve 34 → second refrigeration module 9 → second solenoid valve 19 → hot side heat exchanger 12 → exhaust tank 17 → pump 14.

In the third phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the magnetizing phase, the second refrigeration module 9 is in the demagnetizing phase, the first, second, third and fourth electromagnetic valves are all closed, the fifth electromagnetic valve 22 is opened, and at this time, the magnetic refrigeration system is in the internal circulation process.

In the fourth phase of the magnetic refrigeration system operation cycle, when the first refrigeration module 8 is in the hot flow phase and the second refrigeration module 9 is in the cold flow phase, the first solenoid valve 18, the second solenoid valve 19 and the fifth solenoid valve 22 are closed, the third solenoid valve 20 and the fourth solenoid valve 21 are open, and the flow path of the heat exchange fluid is, pump 14 → cooler 16 → third solenoid valve 20 → second refrigeration module 9 → fourth check valve 35 → cold side heat exchanger 13 → second check valve 33 → first refrigeration module 8 → fourth solenoid valve 21 → hot side heat exchanger 12 → exhaust tank 17 → pump 14.

At this point, the four phase cycle of one cycle ends, and the subsequent cycle operation repeats the cycle process.

The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising two refrigeration modules 7, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators 1 in the refrigeration modules 7.

EXAMPLE III

In the present embodiment, the cold storage device 44 includes four refrigeration modules 7, and the four refrigeration modules 7 are connected in parallel between the hot-end heat exchanger 12 and the cold-end heat exchanger 13; the four refrigeration modules 7 are respectively a first refrigeration module 8, a second refrigeration module 9, a third refrigeration module 10 and a fourth refrigeration module 11; when the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase.

As shown in fig. 10, the magnetic refrigeration system includes nine solenoid valves, eight check valves, and four refrigeration modules 7. The nine electromagnetic valves are an eleventh electromagnetic valve 23, a twelfth electromagnetic valve 24, a thirteenth electromagnetic valve 25, a fourteenth electromagnetic valve 26, a fifteenth electromagnetic valve 27, a sixteenth electromagnetic valve 28, a seventeenth electromagnetic valve 29, an eighteenth electromagnetic valve 30, and a nineteenth electromagnetic valve, respectively. The eight check valves are an eleventh check valve 36, a twelfth check valve 37, a thirteenth check valve 38, a fourteenth check valve 39, a fifteenth check valve 40, a sixteenth check valve 41, a seventeenth check valve 42, and an eighteenth check valve 43, respectively. The four refrigeration modules 7 are respectively a first refrigeration module 8, a second refrigeration module 9, a third refrigeration module 10 and a fourth refrigeration module 11.

The working states of the first refrigeration module 8 and the second refrigeration module 9 are opposite when the magnetic refrigeration system operates; and the working states of the third refrigeration module 10 and the fourth refrigeration module 11 are opposite when the magnetic refrigeration system is operated.

As shown in fig. 6 to 8, the first and second refrigeration modules 8 and 9 are centrosymmetric, and the third and fourth refrigeration modules 10 and 11 are centrosymmetric.

Alternatively, as shown in fig. 6, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include one regenerator 1.

Alternatively, as shown in fig. 7, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include two regenerators 1.

Alternatively, as shown in fig. 8, the first refrigeration module 8, the second refrigeration module 9, the third refrigeration module 10 and the fourth refrigeration module 11 each include three regenerators 1.

Therefore, the refrigerating capacity of the magnetic refrigerating system can be adjusted, and the refrigerating capacity of the magnetic refrigerating system is stronger when the number of the cold accumulators 1 and the number of the refrigerating modules 7 in the refrigerating modules 7 are larger.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase. The eleventh solenoid valve 23 and the twelfth solenoid valve 24 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → eleventh solenoid valve 23 → first refrigeration module 8 → eleventh check valve 36 → cold side heat exchanger 13 → thirteenth check valve 38 → second refrigeration module 9 → twelfth solenoid valve 24 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the first phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the cold flow phase, the second refrigeration module 9 is in the hot flow phase, the third refrigeration module 10 is in the demagnetization phase, and the fourth refrigeration module 11 is in the magnetization phase. The eleventh solenoid valve 23 and the twelfth solenoid valve 24 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → eleventh solenoid valve 23 → first refrigeration module 8 → eleventh check valve 36 → cold side heat exchanger 13 → thirteenth check valve 38 → second refrigeration module 9 → twelfth solenoid valve 24 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the second phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the magnetization phase, the second refrigeration module 9 is in the demagnetization phase, the third refrigeration module 10 is in the cold flow phase, and the fourth refrigeration module 11 is in the hot flow phase. The fifteenth solenoid valve 27 and the sixteenth solenoid valve 28 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → fifteenth solenoid valve 27 → third refrigeration module 10 → fifteenth check valve 40 → cold side heat exchanger 13 → seventeenth check valve 42 → fourth refrigeration module 11 → sixteenth solenoid valve 28 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the third phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the hot flow phase, the second refrigeration module 9 is in the cold flow phase, the third refrigeration module 10 is in the magnetization phase, and the fourth refrigeration module 11 is in the demagnetization phase. The thirteenth solenoid valve 25 and the fourteenth solenoid valve 26 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → thirteenth solenoid valve 25 → second refrigeration module 9 → fourteenth check valve 39 → cold side heat exchanger 13 → twelfth check valve 37 → first refrigeration module 8 → fourteenth solenoid valve 26 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

In the fourth phase of the operation cycle of the magnetic refrigeration system, at this time, the first refrigeration module 8 is in the demagnetization phase, the second refrigeration module 9 is in the magnetization phase, the third refrigeration module 10 is in the hot flow phase, and the fourth refrigeration module 11 is in the cold flow phase. The seventeenth solenoid valve 29 and the eighteenth solenoid valve 30 are open, and the other solenoid valves are closed. The flow path of the heat exchange fluid is: pump 14 → cooler 16 → seventeenth solenoid valve 29 → fourth refrigeration module 11 → eighteenth check valve 43 → cold side heat exchanger 13 → sixteenth check valve 41 → third refrigeration module 10 → eighteenth solenoid valve 30 → hot side heat exchanger 12 → discharge tank 17 → pump 14.

At this point, the four phase cycle of one cycle ends, and the subsequent cycle operation repeats the cycle process.

The embodiment is beneficial to the normal work of the magnetic refrigeration system comprising four refrigeration modules 7, and the refrigeration capacity of the magnetic refrigeration system can be adjusted by adjusting the number of the cold accumulators 1 in the refrigeration modules 7.

Specifically, as the number of the regenerators 1 in the refrigeration module 7 and the number of the refrigeration modules 7 increase, the filling amount of the magnetocaloric material in the refrigeration module 7 also increases, the refrigeration capacity of the magnetic refrigeration system also increases, the flow length of the heat exchange fluid in the refrigeration module 7 also increases, and the flow time and the heat exchange time of the heat exchange fluid in the refrigeration module 7 are further increased.

By changing the number of the refrigeration modules 7 and the number of the cold accumulators 1, the purpose of adjusting the refrigeration performance can be realized on the premise of not replacing the cold accumulation device 44, and then the magnetic refrigeration system can flexibly change according to the load requirement or the actual condition, so that the flexibility and the adaptability of the magnetic refrigeration system are enhanced.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.