CN111043791A

CN111043791A - Magnetic refrigerating device

Info

Publication number: CN111043791A
Application number: CN201911364773.7A
Authority: CN
Inventors: 张谱辉; 李大全; 罗胜; 杨蓉; 汪魁; 路文博; 王振雨; 周鸣宇; 梁飞翔; 傅文煜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-21

Abstract

The present invention provides a magnetic refrigeration device, comprising: the stator assembly comprises a magnetic yoke outer cylinder and at least two permanent magnets; the electromagnetic coil can be electrified to drive the rotor assembly to rotate; still include the regenerator, have two at least magnetic medium chambeies between the inner wall of regenerator and the outer wall, magnetic medium has been held in the magnetic medium chamber, and the regenerator is connected with the rotor subassembly, rotates along with the rotor subassembly and integrative the rotation. The invention combines two magnetic field generating modes of the electromagnetic field and the permanent magnetic field, so that the strength of the air gap of the magnetic field is enhanced, and simultaneously solves the problems of large volume, large driving power consumption and low frequency of a pure permanent magnetic field generator and the problems of large heat productivity, low energy consumption and the like of the pure electromagnetic field generator, so that the heat productivity is reduced while the volume is reduced, the power consumption is reduced, and the system energy efficiency is improved.

Description

Magnetic refrigerating device

Technical Field

The invention belongs to the technical field of magnetic refrigeration, and particularly relates to a magnetic refrigeration device.

Background

According to statistics, nearly 20% of the global power consumption is used for refrigeration and air conditioning equipment. In recent years, with the rise of global temperature and the increase of energy consumption, a novel refrigeration technology without green environmental protection and greenhouse potential attracts attention, and among the technologies, magnetic refrigeration is evaluated as one of 10 technologies which are most likely to replace compression refrigeration by the U.S. department of energy.

Although theoretically, the magnetic refrigeration efficiency can reach 50% -60% of the Carnot cycle efficiency and is about 30% higher than that of the traditional compression refrigeration mode, in most magnetic refrigeration prototypes, the magnetic field source driving equipment is different from the driving power source of the pump in the magnetic refrigeration system, and more electromagnetic valves and one-way valves exist in the magnetic refrigeration system, so that the efficiency is reduced and the pipeline arrangement is complicated;

the magnetic refrigeration prototype comprises a core magnet assembly, a cold accumulator assembly and a magnetic refrigeration system which are mutually influenced. Generally, a single driving pump is used for driving fluid to flow through a magnetized regenerator to absorb heat released by a magnetic working medium and then flow through a hot end radiator, the fluid returning to the normal temperature flows through a demagnetized regenerator to absorb cold generated by the magnetic working medium, and the cold is released by the cold end radiator, so that a magnetic refrigeration cycle is formed;

in the prior patent scheme, a magnetic field generator of a magnetic refrigeration device basically consists of a single permanent magnet or electromagnet, but the permanent magnet magnetic field generator has the problems of large mass, large driving torque and larger power consumption, and meanwhile, because the air gap of the permanent magnet is small and the magnetic field intensity can not be changed, the flexibility and adjustability of a magnetic field are lower, and an obvious short plate exists under the condition of higher control requirement; the single magnetic field generator of the electromagnet or the electromagnetic coil has the problems of large heat productivity, large power consumption, large volume, low frequency and the like.

In the aspect of a fluid management system, the conventional magnetic refrigeration system generally adopts a combination of a pump and a valve system to carry out fluid management, but the scheme has the problems of large power consumption and unbalanced cold and hot blowing flow, so that the heat exchange efficiency of the system is low, and the refrigeration capacity of the system is reduced.

In patent CN105849478A, in terms of magnetic circuit design, a C-shaped magnetic circuit is formed by four permanent magnets and a magnetic yoke, and an electromagnetic coil only provides attraction force to rotate the permanent magnets to a specific position, and the coil itself does not form a part of the magnetic circuit; in the flow path system, heat exchange fluid is in oscillating circulation between the cold accumulator and the cold/heat exchanger, and the cold and heat mixing problem exists in the pipeline, so that the cold energy is lost.

Because the magnetic field generator of the magnetic refrigeration device in the prior art mostly adopts a permanent magnet or an electromagnet, the permanent magnet type magnetic field generator has the problems of large volume, large driving power consumption and low frequency, and the electromagnetic type magnetic field generator has the problems of large heat productivity, low energy consumption and the like, and the compatibility of the two can not be realized; in the prior art, the power consumption is high by adopting a mode of matching a mechanical valve with a hydraulic pump, and the problem that the mechanical valve is not matched with the flow waveform of the pump due to the oscillating torque is solved, so that the system has the problem of unbalanced flow in cold and hot blowing stages, and the problems of low heat exchange efficiency and low refrigerating capacity are caused; the sub-mechanism systems (such as a fluid driving mechanism, a magnetic field generator system, a heat exchanger system and the like) of the conventional magnetic refrigerating device are relatively independent, each structure occupies a part of independent space, and the mechanism has no strong power association, so that the whole machine has a large structure size and is not beneficial to miniaturization and other technical problems.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the problems of large volume, large driving power consumption and low frequency of the magnetic field generator of the magnetic refrigeration device in the prior art, and the problems of large heat generation and low energy consumption of the magnetic field generator of the simple electromagnetic type, which cannot simultaneously solve the defects of large volume and large heat generation, thereby providing a magnetic refrigeration device.

The present invention provides a magnetic refrigeration device, comprising:

the stator assembly comprises a magnetic yoke outer cylinder and at least two permanent magnets arranged on the inner peripheral side of the magnetic yoke outer cylinder, and the at least two permanent magnets are distributed at intervals along the circumferential direction;

the rotor assembly is arranged on the inner periphery of the stator assembly of the cylindrical structure and comprises at least two rotor poles which are distributed along the circumferential direction, an electromagnetic coil is wound between the two rotor poles, a rotating core part is arranged on the inner periphery of the electromagnetic coil, and the electromagnetic coil can be electrified to generate electromagnetic force with permanent magnets distributed at intervals to drive the rotor assembly to rotate;

still include the regenerator, the regenerator is the tube-shape, and is located stator module with between the rotor subassembly, and has two at least magnetic medium chambeies between the inner wall of regenerator and the outer wall, magnetic medium has been held in the magnetic medium chamber, the regenerator with the rotor subassembly is connected, along with the rotor subassembly rotates and integrative the rotation.

Preferably, the first and second electrodes are formed of a metal,

the electromagnetic coils are adjacent to each other and enclose a whole circle, and the adjacent electromagnetic coils are alternately connected with direct current; the regenerator is a cylinder, the number of the magnetic medium cavities corresponds to that of the electromagnetic coils, the magnetic medium cavities are adjacent to each other and enclose a whole circle, and the two adjacent magnetic medium cavities are separated by a partition plate.

Preferably, the first and second electrodes are formed of a metal,

the permanent magnets are identical in structure and are uniformly distributed along the circumferential direction, and the central angle of a gap between every two adjacent permanent magnets is equal to that of the permanent magnets; and/or the central angle of each electromagnetic coil and each permanent magnet is equal in size; and/or the central angle of each magnetic medium cavity is equal to that of each permanent magnet.

Preferably, the first and second electrodes are formed of a metal,

the number of the permanent magnets is 4 in the circumferential direction, the permanent magnets are respectively a first permanent magnet, a second permanent magnet, a third permanent magnet and a fourth permanent magnet, and every two adjacent permanent magnets are distributed at intervals; and/or the number of the rotor pole columns and the number of the electromagnetic coils are 8 in the circumferential direction, and the electromagnetic coils are respectively a first electromagnetic coil, a second electromagnetic coil, a third electromagnetic coil, a fourth electromagnetic coil, a fifth electromagnetic coil, a sixth electromagnetic coil, a seventh electromagnetic coil and an eighth electromagnetic coil; and/or the number of the magnetic medium cavities in the circumferential direction is 8, and the magnetic medium cavities are respectively a first magnetic medium cavity, a second magnetic medium cavity, a third magnetic medium cavity, a fourth magnetic medium cavity, a fifth magnetic medium cavity, a sixth magnetic medium cavity, a seventh magnetic medium cavity and an eighth magnetic medium cavity.

Preferably, the first and second electrodes are formed of a metal,

the magnetic working medium cavity can also be communicated with heat exchange fluid, and the axial end part of the magnetic working medium cavity is also provided with a blocking part which can block the magnetic working medium from passing and allow the heat exchange fluid to pass.

Preferably, the first and second electrodes are formed of a metal,

a first regenerator shunting device is further arranged at one axial end of the regenerator, the magnetic working medium cavity is communicated with the inside of the first regenerator shunting device, a first hot annular channel for converging a plurality of heat exchange fluids heated and released by the magnetic working medium is arranged in the first regenerator shunting device, and a first cold annular channel for converging a plurality of heat exchange fluids cooled and absorbed by the magnetic working medium is further arranged in the first regenerator shunting device; and/or the presence of a gas in the gas,

another axial end portion of regenerator still is provided with second regenerator diverging device, the magnetic medium chamber with the inside intercommunication of second regenerator diverging device, and the inside of second regenerator diverging device has the second hot annular passageway that joins a plurality of heat transfer fluid after being heated and releasing heat by the magnetic medium, just the inside of second regenerator diverging device still has the second cold annular passageway that joins a plurality of heat transfer fluids after being refrigerated and absorbing heat by the magnetic medium.

Preferably, the first and second electrodes are formed of a metal,

the magnetic refrigeration device further comprises a cold end heat exchanger and a hot end heat exchanger, one side of the first cold storage flow dividing device, which is far away from the cold storage device, is also provided with a first hot channel and a first cold channel, the first hot channel is communicated with the first hot annular channel, the first cold channel is communicated with the first cold annular channel, the first hot channel is communicated with an inlet of the hot end heat exchanger, and the first cold channel is communicated with an outlet of the hot end heat exchanger; and/or the presence of a gas in the gas,

one side of the second cold storage device flow dividing device, which deviates from the cold storage device, is also provided with a second hot channel and a second cold channel, the second hot channel is communicated with the second hot annular channel, the second cold channel is communicated with the second cold annular channel, the second hot channel is communicated with an outlet of the cold end heat exchanger, and the second cold channel is communicated with an inlet of the cold end heat exchanger.

Preferably, the first and second electrodes are formed of a metal,

the hot end heat exchanger is also covered with a hot end heat dissipation cover and/or the cold end heat exchanger is also covered with a cold end heat dissipation cover.

Preferably, the first and second electrodes are formed of a metal,

a first regenerator end cover is further arranged between the regenerator and the first regenerator shunting device, a plurality of first communicating channels are arranged in the first regenerator end cover and correspond to the magnetic working medium cavities one by one, one end of each first communicating channel is communicated with the magnetic working medium cavities, and the other end of each first communicating channel is communicated with the first hot annular channel and/or the first cold annular channel of the first regenerator shunting device; and/or the presence of a gas in the gas,

the regenerator with still be provided with the second regenerator end cover between the second regenerator diverging device, just inside being provided with many second intercommunication passageways of second regenerator end cover, with a plurality of magnetism working medium chamber one-to-one, just second intercommunication passageway one end with magnetism working medium chamber intercommunication, the other end with the second regenerator diverging device the second hot annular passageway and/or the cold annular passageway of second intercommunication.

Preferably, the first and second electrodes are formed of a metal,

a rotating shaft is arranged in the rotating core and rotates along with the rotating core,

just magnetic refrigeration device still includes plunger pump subassembly can pump heat transfer fluid, plunger pump subassembly includes pump rotor and pump stator, pump stator set up in the pump rotor periphery, just the pivot is still worn to locate in order to drive in the inside shaft hole of pump rotor the pump rotor rotates.

Preferably, the first and second electrodes are formed of a metal,

the pump comprises a pump rotor and a pump stator, wherein a plunger and a plunger cavity are arranged in the pump rotor, the plunger cavity is used for containing the plunger and making reciprocating motion in the pump rotor, the plunger cavity extends along the radial direction of the pump rotor, the radial outer end of the plunger is abutted to the inner peripheral wall of the pump stator, the inner peripheral wall of the pump stator is a curve, a far point which is farthest away from the axis of the pump rotor and a near point which is closest to the axis of the pump rotor are arranged on the curve, the far point is in smooth transition to the near point, and the plunger is driven by the inner peripheral wall of the pump stator to make reciprocating motion in the plunger cavity along with the rotation of the pump rotor.

Preferably, the first and second electrodes are formed of a metal,

in the circumferential direction, the number of the plungers is 8, and the plungers are respectively a first plunger, a second plunger, a third plunger, a fourth plunger, a fifth plunger, a sixth plunger, a seventh plunger and an eighth plunger, and the number of the plunger cavities is 8 and corresponds to the plungers one by one; the curve comprises 4 arc line segments with the same shape, each arc line segment comprises two near points and one far point, and the intersection position of the adjacent arc line segments is the near point.

Preferably, the first and second electrodes are formed of a metal,

the plunger pump assembly further comprises a pump flow divider, the pump flow divider is connected with one end of a pump rotor of the plunger pump assembly, one side, away from the pump rotor, of the pump flow divider is provided with a third cold channel and a third hot channel, one side, opposite to the pump rotor, of the pump flow divider is provided with more than two fourth cold channels and more than two fourth hot channels, and one end of each of the more than two fourth cold channels can be communicated to the third cold channel, and the other end of each of the more than two fourth cold channels is communicated to a plurality of plunger cavities arranged at intervals; one end of each of the more than two fourth hot channels can be communicated to the corresponding third hot channel, and the other end of each of the more than two fourth hot channels is communicated to a plurality of plunger cavities arranged at intervals.

Preferably, the first and second electrodes are formed of a metal,

a third cold annular diversion channel is arranged in the pump flow divider, one side of the third cold annular diversion channel is communicated with the third cold channel, and the other side of the third cold annular diversion channel is communicated with more than two fourth cold channels; and a third thermal annular diversion channel is arranged in the pump flow divider, one side of the third thermal annular diversion channel is communicated with the third thermal channel, and the other end of the third thermal annular diversion channel is communicated with more than two fourth thermal channels.

Preferably, the first and second electrodes are formed of a metal,

the third cold channel is communicated with the cold end heat exchanger, and/or the third hot channel is communicated with the hot end heat exchanger; and/or alternating between plunger cavities in communication with the fourth cold channel and plunger cavities in communication with the fourth hot channel.

Preferably, the first and second electrodes are formed of a metal,

the four cold channels are uniformly arranged along the circumferential direction, the four hot channels are uniformly arranged along the circumferential direction, and the four cold channels and the four hot channels are alternately arranged along the circumferential direction at intervals.

Preferably, the first and second electrodes are formed of a metal,

the third cold channel is located radially inboard of the third hot channel, the third annular reposition of redundant personnel passageway is located radially inboard of the third annular reposition of redundant personnel passageway, the fourth cold channel all is located radially inboard of fourth hot channel.

Preferably, the first and second electrodes are formed of a metal,

an annular boss is further arranged on one side, provided with the third cold channel and the third hot channel, of the pump flow divider, the third cold annular flow dividing channel axially extends to the inside of the annular boss, and the fourth cold channel is arranged on the radial periphery of the annular boss and faces outwards in the radial direction;

the fourth hot channel is arranged on the pump flow divider, is provided with one side of the annular boss and avoids the annular boss, and is arranged along the axial direction, and the fourth hot channel and the fourth cold channel are alternately arranged at intervals in the circumferential direction.

Preferably, the first and second electrodes are formed of a metal,

a cold blocking mechanism is arranged on the annular boss and positioned between the two adjacent fourth cold channels in a radially and outwardly extending manner; and a thermal isolation mechanism is axially and extendedly arranged on the pump flow divider at a position between two adjacent fourth thermal channels.

Preferably, the first and second electrodes are formed of a metal,

a fifth channel is further formed in the pump rotor in the radial direction, a sixth channel is formed in the axial direction, one end of the sixth channel is communicated to the fifth channel, the other end of the sixth channel is communicated to the plunger cavity, and the fourth hot channel can be directly communicated with the fifth channel and further communicated to the plunger cavity; the fourth cold channel can be communicated to the fifth channel and then communicated with the plunger cavity through the sixth channel; and the fourth hot and cold channels alternately communicate with the plunger cavity.

The magnetic refrigeration device provided by the invention has the following beneficial effects:

1. the invention sets the stator component to comprise permanent magnets distributed at intervals in the circumferential direction, the rotor component comprises a rotor pole and an electromagnetic coil wound on the rotor pole, a cold accumulator is arranged between the stator component and the rotor component and can rotate along with the rotor component, the electromagnetic coil is electrified to generate electromagnetic force between the electromagnetic coil and the permanent magnets distributed at intervals to drive the rotor component to rotate, and the cold accumulator is driven to rotate integrally, so that the magnetic medium cavity is magnetized and demagnetized, the magnetic medium can be magnetized to release heat and demagnetize to absorb heat to form effective magnetic refrigeration, two magnetic field generating modes of an electromagnetic field permanent magnetic field are combined, an electromagnetic-permanent magnetic field generator is effectively provided, the strength of a magnetic field air gap is enhanced, the electromagnetic-permanent magnetic field generator has the functions of adjustable field strength and adjustable frequency, and the problems of large volume and the like existing in a pure permanent magnetic field generator are solved, The problems of large driving power consumption and low frequency, and the problems of large heat productivity, low energy consumption and the like of the pure electromagnetic type magnetic field generator are solved, so that the heat productivity is reduced while the volume is reduced, the power consumption is reduced, and the system energy efficiency is improved;

2. the rotating shaft of the plunger pump assembly and the rotating shaft of the rotor assembly are the same shaft, so that the rotating shaft is driven by the stator assembly to rotate and simultaneously drives the pump rotor of the plunger pump assembly to integrally rotate, the magnetic field subsystem and the fluid driving subsystem are in consistent coupling in structure, the magnetic field waveform and the flow waveform can be well and synchronously matched, the flow of the system is more balanced, the fluid impact of a mechanical valve is avoided, and the problem of unbalanced cold and hot blowing flows and the problem of larger pressure impact of the traditional mechanical valve during switching are solved; the electromagnetic coil of the magnetic field generator is used for driving the fluid driving mechanism (providing driving power for the plunger mechanism), so that a driving pump and a driving motor of the conventional magnetic refrigerating device are eliminated, the power consumption of the whole machine is greatly reduced, and the structure of the whole machine is more compact and miniaturized.

Drawings

Fig. 1 is a perspective exploded view of a magnetic refrigerator of the present invention;

FIG. 1a is a perspective view of the magnetic refrigeration unit of the present invention in an assembled configuration;

fig. 2 is an axial schematic view of a stator-rotor assembly and a regenerator portion of the magnetic refrigeration apparatus of the present invention;

FIG. 3 is a circuit configuration view of a rotor coil of the magnetic refrigerator of the present invention;

fig. 4 is a longitudinal sectional view of a regenerator of the magnetic refrigeration apparatus of the present invention;

FIG. 5 is an axial schematic view of a plunger pump assembly of the magnetic refrigeration apparatus of the present invention;

FIG. 6 is a longitudinal cross-sectional view of a plunger pump assembly of the magnetic refrigeration apparatus of the present invention;

FIG. 7a is a front view of the pump-shunt of the magnetic refrigeration unit of the present invention;

FIG. 7b is a rear view of the pump-shunt of the magnetic refrigerator of the present invention;

fig. 8 is a system configuration diagram of the magnetic refrigeration apparatus of the present invention.

The reference numbers in the figures denote:

100. a stator assembly; 101. a first permanent magnet; 102. a second permanent magnet; 103. a third permanent magnet; 104. a fourth permanent magnet; 200. a rotor assembly; 201. a rotor pole; 211. a first electromagnetic coil; 212. a second electromagnetic coil; 213. a third electromagnetic coil; 214. a fourth electromagnetic coil; 215. a fifth electromagnetic coil; 216. a sixth electromagnetic coil; 217. a seventh electromagnetic coil; 218. an eighth electromagnetic coil; 220. a rotating core; 310. a regenerator; 311. a first magnetic medium cavity; 312. a second magnetic medium cavity; 313. a third magnetic medium cavity; 314. a fourth magnetic medium cavity; 315. a fifth magnetic medium cavity; 316. a sixth magnetic medium cavity; 317. a seventh magnetic medium cavity; 318. an eighth magnetic medium cavity; 320. a first regenerator end cap; 330. a second regenerator end cap; 340. a first regenerator shunting device; 341. a first thermal channel; 342. a first cold aisle; 350. a second regenerator shunting device; 351. a second thermal channel; 352. a second cold aisle; 400. a plunger pump assembly; 410. a pump stator; 411. a far point; 412. a near point; 420. a plunger; 421. a first plunger; 422. a second plunger; 423. a third plunger; 424. a fourth plunger; 425. a fifth plunger; 426. a sixth plunger; 427. a seventh plunger; 428. an eighth plunger; 429. a plunger cavity; 430. a pump rotor; 431. a sixth channel; 432. a fifth channel; 440. a pump flow divider; 441. a third cold aisle; 442. a third thermal channel; 443. a fourth cold aisle; 444. a fourth thermal channel; 445. a cold barrier mechanism; 446. a thermal barrier mechanism; 447. an annular boss; 500. a hot end heat exchanger; 501. a hot end heat dissipation cover; 600. a cold end heat exchanger; 601. a cold end heat dissipation shield; 700. a rotating shaft; 805. a water storage tank; 900. a current commutator.

Detailed Description

As shown in fig. 1 to 8, the present invention provides a magnetic refrigerator, comprising:

the stator assembly 100 comprises a magnetic yoke outer cylinder 110 and at least two permanent magnets arranged on the inner peripheral side of the magnetic yoke outer cylinder 110, wherein the at least two permanent magnets are distributed at intervals along the circumferential direction;

the rotor assembly 200 is arranged on the inner periphery of the stator assembly 100 in a cylindrical structure, the rotor assembly 200 comprises at least two rotor poles 201 which are distributed along the circumferential direction, an electromagnetic coil is wound between the two rotor poles 201, a rotating core 220 is arranged on the inner periphery of the electromagnetic coil, and the electromagnetic coil can be electrified to generate electromagnetic force with permanent magnets distributed at intervals to drive the rotor assembly to rotate;

still include regenerator 310, the regenerator is the tube-shape, and is located stator module 100 with between the rotor subassembly 200, and has two at least magnetic medium chambeies between regenerator 310's the inner wall and the outer wall, magnetic medium has been held in the magnetic medium chamber, regenerator 310 with rotor subassembly 200 is connected, along with rotor subassembly 200 rotates and integrative the rotation.

The invention sets the stator component to comprise permanent magnets distributed at intervals in the circumferential direction, the rotor component comprises a rotor pole and an electromagnetic coil wound on the rotor pole, a regenerator is also arranged between the stator component and the rotor component, the regenerator can rotate along with the rotor component, the electromagnetic coil is electrified to generate electromagnetic force between the electromagnetic coil and the permanent magnets distributed at intervals to drive the rotor component to rotate, and simultaneously the regenerator is driven to rotate integrally, so that the magnetizing and demagnetizing effects are generated on a magnetic working medium cavity, the magnetic working medium can be magnetized to release heat and demagnetize to absorb heat, effective magnetic refrigeration is formed, two magnetic field generating modes of an electromagnetic field and a permanent magnetic field are combined, an electromagnetic-permanent magnetic field generator is effectively provided, the electromagnetic coil rotor and the permanent magnetic stator form a Halbach magnetic loop, and the electromagnetic coil provides a power source for magnetic field conversion and piston motion, the strength of the air gap of the magnetic field is enhanced (the function of enhancing the strength of the magnetic field is achieved), the magnetic field generator has the functions of adjustable field intensity and adjustable frequency, the problems of large volume, large driving power consumption and low frequency of a pure permanent magnetic field generator are solved, and the problems of large heat productivity, low energy consumption and the like of the pure electromagnetic field generator are solved, so that the heat productivity is reduced while the volume is reduced, the power consumption is reduced, and the system energy efficiency is improved.

The magnetic refrigeration device comprises a hybrid magnetic field source component (a stator component 100 and a rotor component 200), a cold storage component (a cold storage component 310, a cold storage end cover and a cold storage shunt device), an inner curve plunger pump component 400 (a pump stator 410, a pump rotor 430, a plunger 420 and a pump shunt 440), a hot end heat exchanger component (a hot end heat exchanger 500 and a hot end heat dissipation outer cover 501) and a cold end heat exchanger component (a cold end heat exchanger 600 and a cold end heat dissipation outer cover 601); the magnetic refrigeration equipment can be used for refrigeration equipment such as a refrigerating box, an air conditioner and the like, and can be used in a series-parallel combination manner;

as shown in fig. 2, the magnetic field source is described. The rotor assembly 200 of the magnetic field source is composed of 8 electromagnetic coils 211-218 and 8 rotor poles 201-208; the stator assembly 100 of the magnetic field source consists of 8 permanent magnets 101-104 and a magnetic yoke outer cylinder 110; a first electromagnetic coil 211 of the magnetic field source is wound on the rotor pole 201, and the first electromagnetic coil 211 and the first permanent magnet 101 form a magnetic circuit when being electrified, so that magnetic induction intensity larger than 1T is generated at an air gap, and the magnetic field source is provided for the magnetocaloric effect of a magnetic working medium; the pole is made of high-permeability materials, such as electrician pure iron and silicon steel sheets; the regenerator 310 comprises 8 magnetic medium cavities, the first magnetic medium cavity 311 and three separated regenerators form one group, the rest regenerators form another group, and the two groups of regenerators are always in opposite states, namely one group enters a magnetic field and the other group leaves the magnetic field; the cold accumulators are separated by a partition plate; the electromagnetic coils 211, 213,215 and 217 are a group L1, the coils 212,214,216 and 218 are another group L2, and the two groups of coils are alternately connected with direct current; as shown in fig. 2, when the power is applied, the corresponding rotor pole 201,203,205,207 will be magnetized, and torque is generated under the attraction of the permanent magnets 101,102,103,104 to make the rotor assembly 200 rotate therewith, and the magnitude of the torque, i.e. the rotation speed, can be adjusted by the magnitude of the current; the regenerator 310 is connected with the rotor assembly 200 of the magnetic field source through the rotating shaft 700, so that the two are ensured to rotate coaxially and simultaneously; fig. 2 is an initial position, taking the second magnetic medium cavity 312 as an example, in order to enable the second magnetic medium cavity 312 to have two stages of magnetization and demagnetization, first, the first electromagnetic coil 211 is energized to enable the rotor assembly 200 to drive the second magnetic medium cavity 312 to rotate 45 °, at this time, the second magnetic medium cavity 312 is completely covered by the second permanent magnet 102, and the second magnetic medium cavity 312 is in a magnetization stage in this stage. Then the second electromagnetic coil 212 is de-energized, and the first electromagnetic coil 211 is energized, so as to drive the second magnetic medium cavity 312 to continue to rotate by 45 °, at this time, the second magnetic medium cavity 312 completely leaves the magnetic field, and a demagnetization process is completed.

Preferably, the first and second electrodes are formed of a metal,

the electromagnetic coils are adjacent to each other and enclose a whole circle, and the adjacent electromagnetic coils are alternately connected with direct current; the regenerator 310 is a cylinder, the number of the magnetic medium cavities corresponds to the number of the electromagnetic coils, the magnetic medium cavities are adjacent to each other and enclose a whole circumference, and the two adjacent magnetic medium cavities are separated by a partition plate. The invention is a preferred arrangement form of a plurality of electromagnetic coils, which can cut magnetic lines of force between the electromagnetic coils which are distributed at intervals when the electromagnetic coils rotate by enclosing into a whole circle, and is realized by alternately leading in current (namely, direct current is led in the electromagnetic coils which are opposite to the permanent magnets, and the electromagnetic coils which are not opposite are not electrified), so that alternate magnetic fields are generated to effectively drive the coil rotor to rotate, meanwhile, the magnetic working medium cavities are consistent with the electromagnetic coils in number and enclose into a whole circle, and the magnetic working medium cavities can generate discontinuous magnetizing and demagnetizing effects, magnetic heating and magnetic cooling are respectively generated in two adjacent magnetic working medium cavities, and the partition plate effectively seals the adjacent magnetic working medium cavities to enable the adjacent magnetic working medium cavities to work independently.

For the coil rotor, in order to achieve the purpose that the coil is alternately connected with direct current, the coil is connected with a PLC analog quantity output module through a current commutator 900 and a brush piece, and the circuit is shown in FIG. 3; the power supply is composed of a PLC analog quantity module and a voltage amplifier.

Preferably, the first and second electrodes are formed of a metal,

the permanent magnets are identical in structure and are uniformly distributed along the circumferential direction, and the central angle of a gap between every two adjacent permanent magnets is equal to that of the permanent magnets; and/or the central angle of each electromagnetic coil and each permanent magnet is equal in size; and/or the central angle of each magnetic medium cavity is equal to that of each permanent magnet. The permanent magnets are uniformly distributed in the circumferential direction, the central angle of a gap between the permanent magnets is equal to that of the permanent magnets, the central angle of each electromagnetic coil is equal to that of each permanent magnet, and the central angle of each magnetic working medium cavity is equal to that of each permanent magnet, so that a uniform magnetic field can be generated between each coil and each magnetic working medium cavity and each permanent magnet when the coil and each magnetic working medium cavity rotate, the magnetizing strength and the demagnetizing strength are equal, the magnetic refrigeration device can output continuous and uniform heat or cold outwards, and the stability and reliability of the system are guaranteed.

Preferably, the first and second electrodes are formed of a metal,

the number of the permanent magnets is 4 in the circumferential direction, the permanent magnets are respectively a first permanent magnet 101, a second permanent magnet 102, a third permanent magnet 103 and a fourth permanent magnet 104, and every two adjacent permanent magnets are distributed at intervals; and/or the number of the electromagnetic coils in the circumferential direction, which are respectively the first electromagnetic coil 211, the second electromagnetic coil 212, the third electromagnetic coil 213, the fourth electromagnetic coil 214, the fifth electromagnetic coil 215, the sixth electromagnetic coil 216, the seventh electromagnetic coil 217 and the eighth electromagnetic coil 218, is 8; and/or the number of the magnetic medium cavities in the circumferential direction is 8, and the magnetic medium cavities are respectively a first magnetic medium cavity 311, a second magnetic medium cavity 312, a third magnetic medium cavity 313, a fourth magnetic medium cavity 314, a fifth magnetic medium cavity 315, a sixth magnetic medium cavity 316, a seventh magnetic medium cavity 317 and an eighth magnetic medium cavity 318. The number and the structural form of the permanent magnet, the electromagnetic coils, the rotor pole columns and the magnetic medium cavities are preferably selected, namely in the process that the electromagnetic coils and the magnetic medium cavities rotate for a circle, four electromagnetic coils are electrified to generate a magnetic field, four magnetic medium cavities are magnetized to release heat, and four magnetic medium cavities are demagnetized to absorb heat.

Preferably, the first and second electrodes are formed of a metal,

the magnetic working medium cavity can also be communicated with heat exchange fluid, and the axial end part of the magnetic working medium cavity is also provided with a blocking part (preferably a filter screen) which can block the magnetic working medium from passing and allow the heat exchange fluid to pass. The blocking part is arranged at the axial end part of the magnetic working medium cavity, so that the magnetic working medium can be effectively blocked from flowing out of the magnetic working medium cavity, and the heat exchange fluid is allowed to flow into the magnetic working medium cavity and flow out of the magnetic working medium cavity, so that the magnetic working medium can continuously complete the alternate processes of magnetization and demagnetization in the magnetic working medium cavity, and heat is continuously and outwards transferred or cold is continuously and outwards transferred through the flowing of the heat exchange fluid.

Preferably, the first and second electrodes are formed of a metal,

a first regenerator shunting device 340 (i.e., a first shunting mechanical valve) is further disposed at one axial end of the regenerator 310, the magnetic medium cavity is communicated with the inside of the first regenerator shunting device 340, a first hot annular channel (not shown) for converging a plurality of heat exchange fluids heated and released by the magnetic medium is disposed inside the first regenerator shunting device 340, and a first cold annular channel (not shown) for converging a plurality of heat exchange fluids cooled and absorbed by the magnetic medium is further disposed inside the first regenerator shunting device 340; and/or the presence of a gas in the gas,

another axial end of the regenerator 310 is further provided with a second regenerator shunting device 350 (i.e. a second shunting mechanical valve), the magnetic medium cavity is communicated with the inside of the second regenerator shunting device 350, a second thermal annular channel (not shown) for converging a plurality of heat exchange fluids heated and discharged by the magnetic medium is arranged inside the second regenerator shunting device 350, and a second cold annular channel (not shown) for converging a plurality of heat exchange fluids cooled and absorbed by the magnetic medium is arranged inside the second regenerator shunting device 350.

The fluid flowing out of the other axial end part of the regenerator can be converged, converged into a plurality of paths and then flows inwards to the magnetic working medium cavity to absorb the heat of the magnetic working medium or absorb the cold of the magnetic working medium by the first regenerator flow dividing device, converged into a path and then flows outwards to the hot end heat exchanger to release heat or outwards to the cold end heat exchanger to absorb heat, or can be shunted by the second regenerator flow dividing device to flow into a plurality of paths and then flows outwards to the hot end heat exchanger to absorb heat, or can be shunted by the second regenerator flow dividing device to flow into a plurality of paths and then flows outwards to the cold end heat exchanger to absorb heat, or can be shunted by the second regenerator flow dividing device to flow into a plurality of paths and flows outwards to the cold end heat exchanger to release heat or outwards to absorb heat, One path of inflowing fluid is divided into a plurality of paths and then flows inwards to the magnetic working medium cavity to absorb the heat of the magnetic working medium or absorb the cold of the magnetic working medium; the first hot annular channel and the second hot annular channel are respectively used for converging a plurality of heat exchange fluids heated and discharged by the magnetic working media to the runner on the other side, and the first cold annular channel and the second cold annular channel are respectively used for converging a plurality of heat exchange fluids cooled and absorbed by the magnetic working media to the runner on the other side.

Since the regenerator 310 rotates with the shaft, in order to ensure that the fluid flowing through the magnetizing bed during magnetizing of the regenerator 310 is always led to the hot end and the fluid flowing through the demagnetizing bed during demagnetizing is always led to the cold end, flow dividing devices (a first regenerator flow dividing device 340 and a second regenerator flow dividing device 350) are arranged at the two ends of the regenerator 310; the description is made with reference to fig. 4:

the first magnetic medium cavity 311 and the fifth magnetic medium cavity 315 are filled with spherical or flaky magnetic medium; the Curie temperatures of the magnetic working media are arranged longitudinally in a gradient change manner; when the beds (the first magnetic working medium cavity 311 and the fifth magnetic working medium cavity 315) are demagnetized, fluid flows from the plunger cavity 429 of the inner curve plunger pump, flows through the pipeline to reach the first cold channel 342, flows through the demagnetizing regenerator (the first magnetic working medium cavity 311 and the fifth magnetic working medium cavity 315) through the first regenerator flow dividing device 340, and finally leaves from the second cold channel 352 to reach the cold-end heat exchanger 600; when the beds (first magnetic working medium chamber 311 and fifth magnetic working medium chamber 315) are magnetized, fluid enters the cold storage bed from the hot channel 351, then leaves the cold storage bed from the first hot channel 341 to reach the hot end heat exchanger, and finally returns to the plunger pump assembly 400.

Preferably, the first and second electrodes are formed of a metal,

the magnetic refrigeration device further comprises a hot end heat exchanger 500 and a cold end heat exchanger 600, one side of the first cold storage flow dividing device 340, which is far away from the cold storage 310, is further provided with a first hot channel 341 and a first cold channel 342, the first hot channel 341 is communicated with the first hot annular channel, the first cold channel is communicated with the first cold annular channel, the first hot channel 341 is communicated with an inlet of the hot end heat exchanger 500, and the first cold channel 342 is communicated with an outlet of the hot end heat exchanger 500; and/or the presence of a gas in the gas,

the second cold storage splitting device 350 is further provided with a second hot channel 351 and a second cold channel 352 on the side facing away from the cold storage 310, the second hot channel 351 is communicated with the second hot annular channel, the second cold channel is communicated with the second cold annular channel, the second hot channel 351 is communicated with the outlet of the cold end heat exchanger 600, and the second cold channel 352 is communicated with the inlet of the cold end heat exchanger 600.

The first cold channel can be communicated with the first annular channel, the first hot channel can be communicated with the first annular channel, and the first cold channel and the first hot channel are respectively positioned on one side of the first cold storage shunt device, which is opposite to the cold storage device, so that the heat exchange fluid is led out of the cold storage device to the hot end heat exchanger or is led into a magnetic working medium cavity of the cold storage device after the heat exchange of the heat exchange fluid from the hot end heat exchanger; can the cold annular channel intercommunication of second, the hot passageway of second can the hot annular channel intercommunication of second through the cold passageway of second, the cold passageway of second and the hot passageway of second are located one side of the regenerator that carries on the back of the body of second regenerator diverging device respectively to in leading out regenerator to cold junction heat exchanger with heat transfer fluid, or with in the magnetic medium chamber of leading-in regenerator after the heat transfer of heat transfer fluid from cold junction heat exchanger.

Preferably, the first and second electrodes are formed of a metal,

the hot end heat exchanger 500 is further covered with a hot end heat dissipation cover 501 and/or the cold end heat exchanger 600 is further covered with a cold end heat dissipation cover 601. The invention can improve the heat dissipation effect through the hot end heat dissipation cover and the cold end heat dissipation cover.

Preferably, the first and second electrodes are formed of a metal,

a first cold accumulator end cover 320 is further arranged between the cold accumulator 310 and the first cold accumulator shunting device 340, a plurality of first communication channels are arranged inside the first cold accumulator end cover 320 and correspond to the magnetic medium cavities one by one, one end of each first communication channel is communicated with the magnetic medium cavities, and the other end of each first communication channel is communicated with the first hot annular channel and/or the first cold annular channel of the first cold accumulator shunting device 340; and/or the presence of a gas in the gas,

a second regenerator end cover 330 is further arranged between the regenerator 310 and the second regenerator flow dividing device 350, a plurality of second communicating channels (not shown) are arranged inside the second regenerator end cover 330 and correspond to the magnetic medium cavities one by one, one end of each second communicating channel (not shown) is communicated with the magnetic medium cavities, and the other end of each second communicating channel is communicated with the second thermal annular channel and/or the second cold annular channel of the second regenerator flow dividing device 350.

The first regenerator end cover is arranged between the first regenerator shunting device and the regenerator and used for leading out heat exchange fluid in the magnetic working medium cavity to the first regenerator shunting device or leading the heat exchange fluid in the first regenerator shunting device to the magnetic working medium cavity, and the second regenerator end cover is arranged between the second regenerator shunting device and the regenerator and used for leading out the heat exchange fluid in the magnetic working medium cavity to the second regenerator shunting device or leading the heat exchange fluid in the second regenerator shunting device to the magnetic working medium cavity.

Preferably, the first and second electrodes are formed of a metal,

a rotation shaft 700 is provided inside the rotation core 220, the rotation shaft 700 rotates together with the rotation core 220,

and the magnetic refrigeration device further comprises a plunger pump assembly 400, the plunger pump assembly 400 can pump heat exchange fluid, the plunger pump assembly 400 comprises a pump rotor 430 and a pump stator 410, the pump stator 410 is arranged at the periphery of the pump rotor 430, and the rotating shaft 700 is further arranged in a shaft hole inside the pump rotor 430 in a penetrating manner so as to drive the pump rotor 430 to rotate.

The rotating shaft of the plunger pump assembly and the rotating shaft of the rotor assembly are the same shaft, so that the rotating shaft is driven by the stator assembly to rotate and simultaneously drives the pump rotor of the plunger pump assembly to integrally rotate, the magnetic field subsystem and the fluid driving subsystem are in consistent coupling in structure, the magnetic field waveform and the flow waveform can be well and synchronously matched, the flow of the system is more balanced, the fluid impact of a mechanical valve is avoided, and the problem of unbalanced cold and hot blowing flows and the problem of larger pressure impact of the traditional mechanical valve during switching are solved; the electromagnetic coil of the magnetic field generator is used for driving the fluid driving mechanism (providing driving power for the plunger mechanism), so that a driving pump and a driving motor of the conventional magnetic refrigerating device are eliminated, the power consumption of the whole machine is greatly reduced, and the structure of the whole machine is more compact and miniaturized. The measures of the invention enable the flow path system of the magnetic adding, demagnetizing and magnetic refrigeration of the regenerator to achieve synchronous matching on the waveform of the magnetic field and the waveform of the flow, simultaneously reduce the power consumption of the system, improve the refrigeration capacity of the system, simplify the structure of the magnetic refrigeration equipment, improve the intensity of the air gap magnetic field, simplify the pipeline system and ensure the synchronous matching of the waveform of the magnetic field and the waveform of the flow.

The plunger pump assembly 400 provides a fluid power source for the magnetic refrigeration system flow path; the description is made with reference to fig. 5: the fluid can be a mixture of 30% of glycol and 70% of purified water or other heat exchange fluids with good heat conduction effect; the plunger pump assembly 400 is connected with the rotor assembly 200 through a rotating shaft 700, and the rotation of the rotor is consistent with the rotation of the plunger pump assembly 400; the first plunger 421, the third plunger 423, the fifth plunger 425 and the seventh plunger 427 form one group, the second plunger 422, the fourth plunger 424, the sixth plunger 426 and the eighth plunger 428 form another group, and adjacent plungers in the same group are arranged at a 90-degree circumference; as shown in fig. 4, when the pump rotor 430 rotates clockwise, the plunger 420 is driven to move along the inner curve, and compresses the fluid in the piston to drive the fluid to flow to the regenerator 310; the pump rotor 430 also drives the plunger 420 to move along the inner curve, driving the fluid in the regenerator 310 to flow into the plunger.

Preferably, the first and second electrodes are formed of a metal,

the pump rotor 430 is internally provided with a plunger 420 and a plunger cavity 429 for accommodating the plunger 420 to reciprocate therein, the plunger cavity 429 extends along the radial direction of the pump rotor 430, the radially outer end of the plunger 420 abuts against the inner peripheral wall of the pump stator 410, the inner peripheral wall of the pump stator 410 is a curve in the cross section, the curve has a far point 411 farthest from the axial center of the pump rotor 430 and a near point 412 closest to the axial center of the pump rotor 430, the far point 411 to the near point 412 are in smooth transition, and the plunger 420 is driven by the inner peripheral wall curve of the pump stator 410 to reciprocate in the plunger cavity 429 with the rotation of the pump rotor 430. The plunger pump assembly is a preferable structure form of the plunger pump assembly, namely, the plunger is pushed when the plunger rotor rotates through the forms of the plunger and the plunger cavity and through the curved inner peripheral wall of the pump stator of the curved plunger pump, so that the plunger completes reciprocating motion in the plunger cavity to achieve the effect of pumping out or pumping in the heat exchange fluid.

Preferably, the first and second electrodes are formed of a metal,

in the circumferential direction, the number of the plungers is 8, and the plungers are respectively a first plunger 421, a second plunger 422, a third plunger 423, a fourth plunger 424, a fifth plunger 425, a sixth plunger 426, a seventh plunger 427 and an eighth plunger 428, and the number of the plunger cavities 429 is also 8, and the plungers 420 correspond to one another; the curve comprises 4 arc line segments with the same shape, each arc line segment comprises two near points 412 and one far point 411, and the intersection position of the adjacent arc line segments is the near point 412. This is the preferred number of plungers and the preferred number of plunger chambers of the present invention, enabling 4 spaced plungers to be compressed simultaneously, 4 spaced plungers to be expanded simultaneously, performing the function of spaced pumping and pumping, the curve being an arc segment and near and far points, enabling the plunger to reciprocate smoothly compressing or expanding during rotation with the rotor, and the plunger to be expanded in the plunger chamber during movement from the near point to the far point, and the plunger to be compressed in the plunger chamber during movement from the far point to the near point.

Preferably, the first and second electrodes are formed of a metal,

the pump flow divider 440 is arranged in connection with one end of the pump rotor 430 of the plunger pump assembly, one side of the pump flow divider 440, which faces away from the pump rotor 430, is provided with a third cold channel 441 and a third hot channel 442, one side of the pump flow divider 440, which is opposite to the pump rotor 430, is provided with more than two fourth cold channels 443 and more than two fourth hot channels 444, and one end of each of the more than two fourth cold channels 443 can be communicated to the third cold channel 441, and the other end of each of the more than two fourth cold channels 443 is respectively communicated to a plurality of plunger cavities 429 arranged at intervals; two or more of the fourth thermal vias 444 can communicate at one end to the third thermal vias 442 and at the other end to a plurality of spaced apart plunger cavities 429, respectively. Can carry out the effect of effectively shunting with hot fluid or cold fluid of the same kind that gets into the pump shunt through the pump shunt, make it get into a plurality of plunger chambeies respectively (inhaled in 4 plunger chambeies preferentially), converge and pump out through the pump shunt from the cold fluid or hot fluid in a plurality of plunger chambeies simultaneously, a plurality of fourth cold passageways and a plurality of fourth hot aisle communicate with plunger pump one side respectively, third cold passageway or third hot aisle communicate with cold junction heat exchanger or hot junction heat exchanger one side respectively.

Since the pump rotor 430 rotates with the shaft, in order to match the flow rate of the driving pump 400 flowing through the regenerator 310 with the demagnetization time; the fluid driving the pump to drive the fluid to flow through the magnetizing bed is always led to the hot end, the fluid flowing through the magnetizing bed is always led to the cold end during demagnetization, and a pump shunt 440 is arranged at the port of the pump; the description is made with reference to fig. 5: when the plunger 420 compresses the liquid, the fluid enters the cold channel (the third cold channel 441) through the cold channel (the fifth channel 432) and then flows through the cold accumulator to reach the cold end; conversely, when the plunger 420 draws liquid, the fluid enters the sixth channel 431 through the third thermal channel 442 and enters the plunger.

Preferably, the first and second electrodes are formed of a metal,

a third cold annular diversion channel (not shown) inside the pump diverter 440, which communicates with the third cold channel 441 on one side and two or more of the fourth cold channels 443 on the other side; inside the pump splitter 440, there is a third thermal annular splitter channel (not shown) that communicates with the third thermal channel 442 on one side and with two or more of the fourth thermal channels 444 on the other side. The pump flow divider is a preferable structure form of the interior of the pump flow divider, and can converge multiple fourth cold channels and enter the third cold channel through the third cold annular flow dividing channel, or divide the third cold channel and enter the multiple fourth cold channels; and the multiple fourth heat channels can be merged and enter the third heat channel through the third thermal ring diversion channel, or the third heat channel can be diverted and enter the multiple fourth heat channels.

Preferably, the first and second electrodes are formed of a metal,

the heat exchanger also comprises a hot end heat exchanger 500 and a cold end heat exchanger 600, wherein the third cold channel 441 is communicated with the cold end heat exchanger 600, and/or the third hot channel 442 is communicated with the hot end heat exchanger 500; and/or alternating between plunger cavities in communication with the fourth cold aisle 443 and plunger cavities in communication with the fourth hot aisle 444. The hot end heat exchanger is communicated with the third hot channel, so that heat exchange fluid subjected to heat release in the hot end heat exchanger enters the plunger pump assembly through the third hot channel, or the heat exchange fluid in the plunger pump assembly is pumped into the hot end heat exchanger through the third hot channel; and the cold end heat exchanger is communicated with the third cold channel, so that the heat exchange fluid subjected to heat absorption in the cold end heat exchanger enters the plunger pump assembly through the third cold channel, or the heat exchange fluid in the plunger pump assembly is pumped to the cold end heat exchanger through the third cold channel.

Preferably, the first and second electrodes are formed of a metal,

the four fourth cold channels 443 are uniformly arranged along the circumferential direction, the four fourth hot channels 444 are uniformly arranged along the circumferential direction, and the fourth cold channels 443 and the fourth hot channels 444 are alternately arranged at intervals along the circumferential direction. This is the preferred number and arrangement of the fourth cold and hot channels of the present invention, which enables the plunger pump assembly to discharge hot fluid while uniformly sucking cold fluid in the circumferential direction, or to discharge cold fluid while uniformly sucking hot fluid.

Preferably, the first and second electrodes are formed of a metal,

the third cold aisle 441 is located radially inward of the third hot aisle 442, the third cold annulus split-flow aisle is located radially inward of the third hot annulus split-flow aisle, and the fourth cold aisle 443 is located radially inward of the fourth hot aisle 444. This is a further preferred arrangement position of the third cold passageway and the third hot passageway, and a further preferred arrangement position of the third cold annular diversion passageway and the third hot annular diversion passageway, and a further preferred arrangement position of the fourth cold passageway and the fourth hot passageway, so that the cold passageway and the hot passageway do not communicate with each other and work independently to prevent mutual interference.

Preferably, the first and second electrodes are formed of a metal,

the pump flow divider 440 is further provided with an annular boss 447 at a side thereof where the fourth cold passageway 443 and the fourth hot passageway 444 are provided, the third cold annular flow dividing passageway extends axially to the inside of the annular boss 447, and the fourth cold passageway 443 is provided radially outward of the radially outer periphery of the annular boss 447;

the fourth hot channel 444 is provided on the pump flow divider 440, on the side where the annular boss 447 is provided, and avoids the annular boss 447, the fourth hot channel 444 is provided in the axial direction, and the fourth hot channel 444 and the fourth cold channel 443 are provided at intervals in the circumferential direction.

The pump flow divider is a further preferable structure form on the pump flow divider, and the cold channel and the hot channel can flow independently without mutual channeling due to the arrangement of the arc-shaped bosses.

Preferably, the first and second electrodes are formed of a metal,

a cold blocking mechanism 445 is further arranged on the annular boss 447 at a position between two adjacent fourth cold passages 443 and extends radially outwards; a thermal blocking mechanism 446 is further axially and extendedly provided on the pump splitter 440 at a position between two adjacent fourth thermal channels 444. The pump flow divider is a further preferable structure form on the pump flow divider, the cold channel and the hot channel can be prevented from channeling, the hot channel is closed when the cold channel is communicated, and the cold channel is closed when the hot channel is communicated, and the cold channel and the hot channel flow independently.

To achieve the cold and hot end splitting function, a pump splitter is used, as will now be described with reference to fig. 7a-7 b: the third hot pass 442 of the pump splitter 440 is connected by piping to the hot side heat exchanger 500. The pump diverter 440 is connected with the rotating shaft 700 through a bearing and keeps the position unchanged, so that the hot end radiator is ensured not to rotate along with the shaft; the thermal blocking mechanisms 446 are 4 in total, present an arc of 45 °, and alternately block the sixth channel 431 with the rotation of the pump rotor, so that four plungers (the second plunger 422, the fourth plunger 424, the sixth plunger 426 and the eighth plunger 428) at 90 ° can be converged at the third thermal channel 442 at the same time; the cold blocking mechanism 445 is in a 45-degree arc, 4 pistons are arranged at 90 degrees, and the fifth channel 432 is blocked alternatively along with the rotation of the pump rotor, so that four pistons (the first piston 421, the third piston 423, the fifth piston 425 and the seventh piston 427) at 90 degrees can converge at the third cold channel 441; the pump flow splitter 440 is used in conjunction with the pump rotor 430.

Preferably, the first and second electrodes are formed of a metal,

a fifth channel 432 is further radially formed in the pump rotor 430, a sixth channel 431 is axially formed in the pump rotor 430, one end of the sixth channel 431 is communicated to the fifth channel 432, the other end of the sixth channel 431 is communicated to the plunger cavity 429, and the fourth hot channel 444 can be directly communicated with the sixth channel 431 and further communicated to the plunger cavity 429; the fourth cold passageway 443 is configured to communicate with the fifth passageway 432 and the plunger cavity 429 through the sixth passageway 431; and the fourth hot aisle 444 and the fourth cold aisle 443 alternately communicate with the ram cavity 429.

This is a preferred form of construction of the interior of the pump rotor on the plunger pump assembly of the invention, the passages in the pump flow divider being able to communicate by way of fifth and sixth passages, and the radially outer hot passage communicating directly by way of the sixth passage to the plunger cavity, and the radially inner cold passage communicating in turn by way of the fifth and sixth passages to the plunger cavity, the effect of the alternating communication of fluid being achieved.

The flow diagram of the magnetic refrigeration system is shown in fig. 8, which will be described with reference to fig. 8:

the hot end radiator 500 and the cold end radiator 600 are respectively fixed on the hot end heat radiation cover 501 and the cold end heat radiation cover 601; the fluid flows through the pipeline through the pump 400 to reach the first cold channel 342 and then flows through the demagnetizing bed (the second magnetic medium cavity 312), at the moment, the temperature of the fluid is lowered, the fluid reaches the cold end heat exchanger 600 through the second cold channel 352, the cold energy of the fluid is exchanged, and the temperature returns to the normal temperature; the pipeline is wrapped with heat insulation materials such as heat insulation cotton; the normal temperature fluid flows through the magnetizing bed (the first magnetic medium cavity 311) through the second thermal channel 351, absorbs heat generated by the magnetic medium, exchanges heat with the hot end heat exchanger 500 through the first thermal channel 341 to return to the normal temperature, and finally the fluid flows into the plunger to complete one magnetic refrigeration cycle.

The invention is characterized in that:

1. the electromagnetic-permanent magnetic hybrid magnetic field generator is provided, so that the strength of a magnetic field air gap is enhanced, and the electromagnetic-permanent magnetic hybrid magnetic field generator has the functions of adjustable field intensity and adjustable frequency and enhances the flexibility of a system;

2. the magnetic field subsystem and the fluid driving subsystem are structurally coupled, so that the magnetic field waveform and the flow waveform can be synchronously matched, the flow of the system is more balanced, and the fluid impact of a mechanical valve is avoided;

3. the electromagnetic coil of the magnetic field generator is used for driving the fluid driving mechanism at the same time, so that a driving pump and a driving motor are omitted, the power consumption of the whole machine is greatly reduced, and the structure of the whole machine is more compact and miniaturized;

the invention solves the following technical problems

1. Most of the prior magnetic refrigeration devices adopt permanent magnets or electromagnetism, while the permanent magnetic type magnetic field generator has the problems of large volume, large driving power consumption and low frequency, and the electromagnetic type magnetic field generator has the problems of large heat productivity, low energy consumption and the like;

2. in the prior art, the power consumption is high by adopting a mode of matching a mechanical valve with a hydraulic pump, and the problem that the mechanical valve is not matched with the flow waveform of the pump due to the oscillating torque is solved, so that the system has the problem of unbalanced flow in cold and hot blowing stages, and the problems of low heat exchange efficiency and low refrigerating capacity are caused;

3. the sub-mechanism systems (such as a fluid driving mechanism, a magnetic field generator system, a heat exchanger system and the like) of the conventional magnetic refrigerating device are relatively independent, a part of independent space is occupied in the structure, and strong power association does not exist in the mechanism, so that the whole machine has a large structure size and is not beneficial to miniaturization.

The magnetic field source, the flow path unit of the cold accumulator and the control strategy provided by the invention have the following beneficial effects:

1. the electromagnetic-permanent magnetic field generator is provided by combining two magnetic field generation modes of an electromagnetic field and a permanent magnetic field, so that the strength of the air gap of the magnetic field is enhanced, and the electromagnetic-permanent magnetic field generator has the functions of adjustable field intensity and adjustable frequency. The problems of high power consumption of a permanent magnet type and low energy efficiency of an electromagnetic type are solved;

2. due to the consistent coupling of the magnetic field subsystem and the fluid driving subsystem in structure, the magnetic field waveform and the flow waveform can be well and synchronously matched, and the problems of unbalanced cold and hot blowing flow and larger pressure impact during switching of the traditional mechanical valve are solved;

3. the electromagnetic coil can provide driving power for the piston mechanism, and a driving motor of the conventional magnetic refrigerating device is omitted, so that the power consumption of the whole machine is greatly reduced, and the structure is more compact.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic refrigeration apparatus characterized by: the method comprises the following steps:

the stator assembly (100) comprises a magnetic yoke outer cylinder (110) and at least two permanent magnets arranged on the inner peripheral side of the magnetic yoke outer cylinder (110), wherein the at least two permanent magnets are distributed at intervals along the circumferential direction;

the rotor assembly (200) is arranged on the inner periphery of the stator assembly (100) of the cylindrical structure, the rotor assembly (200) comprises at least two rotor poles (201) which are distributed along the circumferential direction, an electromagnetic coil is wound between the two rotor poles (201), a rotating core part (220) is arranged on the inner periphery of the electromagnetic coil, and the electromagnetic coil can be electrified to generate electromagnetic force with permanent magnets distributed at intervals to drive the rotor assembly to rotate;

still include regenerator (310), the regenerator is the tube-shape, and is located stator module (100) with between rotor subassembly (200), and has two at least magnetic medium chambeies between the inner wall of regenerator (310) and the outer wall, magnetic medium has been held in the magnetic medium chamber, regenerator (310) with rotor subassembly (200) are connected, along with rotor subassembly (200) rotate and integrative the rotation.

2. A magnetic refrigeration apparatus according to claim 1, wherein:

the electromagnetic coils are adjacent to each other and enclose a whole circle, and the adjacent electromagnetic coils are alternately connected with direct current; the cold accumulator (310) is a cylinder, the number of the magnetic medium cavities corresponds to that of the electromagnetic coils, the magnetic medium cavities are adjacent to each other and enclose a whole circle, and the two adjacent magnetic medium cavities are separated by a partition plate.

3. A magnetic refrigeration apparatus according to claim 1, wherein:

4. A magnetic refrigeration apparatus according to claim 1, wherein:

the number of the permanent magnets is 4 in the circumferential direction, the permanent magnets are respectively a first permanent magnet (101), a second permanent magnet (102), a third permanent magnet (103) and a fourth permanent magnet (104), and the two adjacent permanent magnets are distributed at intervals; and/or the number of the rotor pole columns (201) and the number of the electromagnetic coils are 8 in the circumferential direction, wherein the electromagnetic coils are respectively a first electromagnetic coil (211), a second electromagnetic coil (212), a third electromagnetic coil (213), a fourth electromagnetic coil (214), a fifth electromagnetic coil (215), a sixth electromagnetic coil (216), a seventh electromagnetic coil (217) and an eighth electromagnetic coil (218); and/or the number of the magnetic working medium cavities in the circumferential direction is 8, and the magnetic working medium cavities are respectively a first magnetic working medium cavity (311), a second magnetic working medium cavity (312), a third magnetic working medium cavity (313), a fourth magnetic working medium cavity (314), a fifth magnetic working medium cavity (315), a sixth magnetic working medium cavity (316), a seventh magnetic working medium cavity (317) and an eighth magnetic working medium cavity (318).

5. A magnetic refrigeration apparatus according to claim 1, wherein:

6. A magnetic refrigeration device according to any of claims 1 to 5 wherein:

a first cold storage shunt device (340) is further arranged at one axial end of the cold storage device (310), the magnetic medium cavity is communicated with the inside of the first cold storage shunt device (340), a first hot annular channel for converging a plurality of heat exchange fluids heated and released by the magnetic medium is arranged inside the first cold storage shunt device (340), and a first cold annular channel for converging a plurality of heat exchange fluids cooled and absorbed by the magnetic medium is further arranged inside the first cold storage shunt device (340); and/or the presence of a gas in the gas,

another axial end of regenerator (310) still is provided with second regenerator diverging device (350), the magnetic medium chamber with the inside intercommunication of second regenerator diverging device (350), and the inside of second regenerator diverging device (350) has the second hot annular passageway of joining a plurality of heat transfer fluid after heating and releasing heat by the magnetic medium, and the inside of second regenerator diverging device (350) still has the second cold annular passageway of joining a plurality of heat transfer fluid after the heat absorption by the refrigeration of magnetic medium.

7. A magnetic refrigeration apparatus according to claim 6, wherein:

the magnetic refrigeration device further comprises a hot end heat exchanger (500) and a cold end heat exchanger (600), one side of the first cold storage flow dividing device (340) which is far away from the cold storage device (310) is further provided with a first hot channel (341) and a first cold channel (342), the first hot channel (341) is communicated with the first hot annular channel, the first cold channel is communicated with the first cold annular channel, the first hot channel (341) is communicated with an inlet of the hot end heat exchanger (500), and the first cold channel (342) is communicated with an outlet of the hot end heat exchanger (500); and/or the presence of a gas in the gas,

the side of the second cold storage splitting device (350) facing away from the cold storage (310) is also provided with a second hot channel (351) and a second cold channel (352), the second hot channel (351) is communicated with the second hot annular channel, the second cold channel is communicated with the second cold annular channel, the second hot channel (351) is communicated with the outlet of the cold end heat exchanger (600), and the second cold channel (352) is communicated with the inlet of the cold end heat exchanger (600).

8. A magnetic refrigeration apparatus according to claim 7, wherein:

the hot end heat exchanger (500) is further covered with a hot end heat dissipation cover (501) and/or the cold end heat exchanger (600) is further covered with a cold end heat dissipation cover (601).

9. A magnetic refrigeration apparatus according to claim 6, wherein:

a first cold accumulator end cover (320) is further arranged between the cold accumulator (310) and the first cold accumulator shunting device (340), a plurality of first communication channels are arranged inside the first cold accumulator end cover (320) and correspond to the magnetic working medium cavities one by one, one end of each first communication channel is communicated with the magnetic working medium cavities, and the other end of each first communication channel is communicated with the first hot annular channel and/or the first cold annular channel of the first cold accumulator shunting device (340); and/or the presence of a gas in the gas,

the regenerator (310) and the second regenerator shunting device (350) are also provided with a second regenerator end cover (330), the second regenerator end cover (330) is internally provided with a plurality of second communication channels and is in one-to-one correspondence with the magnetic working medium cavities, one end of the second communication channel is communicated with the magnetic working medium cavities, and the other end of the second communication channel is communicated with the second thermal annular channel and/or the second cold annular channel of the second regenerator shunting device (350).

10. A magnetic refrigeration device according to any of claims 1 to 6 wherein:

a rotating shaft (700) is arranged inside the rotating core (220), the rotating shaft (700) rotates along with the rotating core (220),

and the magnetic refrigeration device further comprises a plunger pump assembly (400), wherein the plunger pump assembly (400) can pump heat exchange fluid, the plunger pump assembly (400) comprises a pump rotor (430) and a pump stator (410), the pump stator (410) is arranged on the periphery of the pump rotor (430), and the rotating shaft (700) is further arranged in a shaft hole in the pump rotor (430) in a penetrating manner to drive the pump rotor (430) to rotate.

11. A magnetic refrigeration apparatus according to claim 10, wherein:

the pump rotor (430) is internally provided with a plunger (420) and a plunger cavity (429) for accommodating the plunger (420) to reciprocate inside, the plunger cavity (429) extends along the radial direction of the pump rotor (430), the radially outer end of the plunger (420) abuts against the inner peripheral wall of the pump stator (410), the inner peripheral wall of the pump stator (410) is a curve in the cross section, the curve is provided with a far point (411) farthest from the axial center of the pump rotor (430) and a near point (412) nearest to the axial center of the pump rotor (430), the far point (411) and the near point (412) are in smooth transition, and the plunger (420) is driven by the inner peripheral wall curve of the pump stator (410) to reciprocate in the plunger cavity (429) along with the rotation of the pump rotor (430).

12. A magnetic refrigeration apparatus according to claim 11, wherein:

the number of the plungers is 8, the plungers are respectively a first plunger (421), a second plunger (422), a third plunger (423), a fourth plunger (424), a fifth plunger (425), a sixth plunger (426), a seventh plunger (427) and an eighth plunger (428) in the circumferential direction, and the number of the plunger cavities (429) is 8 and corresponds to that of the plungers (420) one by one; the curve comprises 4 arc line segments with the same shape, each arc line segment comprises two near points (412) and one far point (411), and the intersection position of the adjacent arc line segments is the near point (412).

13. A magnetic refrigeration apparatus according to claim 12, wherein:

the pump flow divider (440) is connected with one end of a pump rotor (430) of the plunger pump assembly, a third cold channel (441) and a third hot channel (442) are arranged on one side, away from the pump rotor (430), of the pump flow divider (440), two or more fourth cold channels (443) and two or more fourth hot channels (444) are arranged on one side, opposite to the pump rotor (430), of the pump flow divider (440), and one end of each of the two or more fourth cold channels (443) can be communicated to the third cold channel (441), and the other end of each of the two or more fourth cold channels (443) is communicated to a plurality of plunger cavities (429) arranged at intervals; more than two fourth hot channels (444) can be communicated to the third hot channel (442) at one end and communicated to a plurality of plunger cavities (429) arranged at intervals at the other end respectively.

14. A magnetic refrigeration apparatus according to claim 13, wherein:

-inside the pump splitter (440) there is a third cold annular diversion channel communicating on one side with the third cold channel (441) and on the other side with two or more of the fourth cold channels (443); a third thermal ring-shaped diversion channel is arranged in the pump flow divider (440), one side of the third thermal ring-shaped diversion channel is communicated with the third thermal channel (442), and the other end of the third thermal ring-shaped diversion channel is communicated with more than two fourth thermal channels (444).

15. A magnetic refrigeration apparatus according to claim 13, wherein:

the heat exchanger also comprises a hot end heat exchanger (500) and a cold end heat exchanger (600), the third cold channel (441) is communicated with the cold end heat exchanger (600), and/or the third hot channel (442) is communicated with the hot end heat exchanger (500); and/or alternating between plunger cavities in communication with the fourth cold aisle (443) and plunger cavities in communication with the fourth hot aisle (444).

16. A magnetic refrigeration apparatus according to claim 13, wherein:

the number of the fourth cold channels (443) is four, the fourth cold channels are uniformly arranged along the circumferential direction, the number of the fourth hot channels (444) is four, the fourth cold channels are uniformly arranged along the circumferential direction, and the fourth cold channels (443) and the fourth hot channels (444) are alternately arranged at intervals in the circumferential direction.

17. A magnetic refrigeration apparatus according to claim 14, wherein:

the third cold aisle (441) is located radially inside the third hot aisle (442), the third cold annulus split-flow aisle is located radially inside the third hot annulus split-flow aisle, and the fourth cold aisles (443) are both located radially inside the fourth hot aisle (444).

18. A magnetic refrigeration apparatus according to claim 13, wherein:

the side of the pump flow divider (440) where the fourth cold passageway (443) and the fourth hot passageway (444) are located is further provided with an annular boss (447), the third cold annular flow dividing passageway extends axially to the interior of the annular boss (447), and the fourth cold passageway (443) is located radially outward of the outer periphery of the annular boss (447);

the fourth hot channel (444) is opened on the pump flow divider (440), is provided on one side of the annular boss (447), and avoids the annular boss (447), the fourth hot channel (444) is opened in the axial direction, and the fourth hot channel (444) and the fourth cold channel (443) are alternately arranged at intervals in the circumferential direction.

19. A magnetic refrigeration apparatus according to claim 18, wherein:

a cold blocking mechanism (445) is further arranged on the annular boss (447) and located between two adjacent fourth cold passages (443) in a manner of extending radially outwards; the pump splitter (440) is also provided with a thermal blocking mechanism (446) extending axially at a position between two adjacent fourth thermal channels (444).

20. A magnetic refrigeration apparatus according to claim 13, wherein:

a fifth channel (432) is formed in the pump rotor (430) in the radial direction, a sixth channel (431) is formed in the axial direction, one end of the sixth channel (431) is communicated to the fifth channel (432), the other end of the sixth channel is communicated to the plunger cavity (429), and the fourth hot channel (444) can be directly communicated with the sixth channel (431) and further communicated to the plunger cavity (429); the fourth cold channel (443) is connectable to the fifth channel (432) and to the plunger cavity (429) through the sixth channel (431); and the fourth hot channel (444) and the fourth cold channel (443) alternately communicate with the ram cavity (429).