CN107726664B - Magnetic Refrigerator - Google Patents
Magnetic Refrigerator Download PDFInfo
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- CN107726664B CN107726664B CN201711141005.6A CN201711141005A CN107726664B CN 107726664 B CN107726664 B CN 107726664B CN 201711141005 A CN201711141005 A CN 201711141005A CN 107726664 B CN107726664 B CN 107726664B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/002—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
- F25B2321/0022—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a rotating or otherwise moving magnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The application provides a magnetic refrigerator, which comprises a rotating shaft, a plurality of heat exchange pipelines arranged on the periphery of the rotating shaft and at least two magnetic field generators, wherein all the magnetic field generators are uniformly distributed on the rotating shaft. The magnetic refrigerator provided by the application can ensure that each heat exchange pipeline is in an independent working state, does not interfere with each other and does not generate fluid exchange, and can ensure that the fluid needs to be demagnetized and radiated through the magnetocaloric material beds when flowing to the cold end through the two magnetocaloric material beds, so that the refrigeration capacity is prevented from being reduced due to the mixing of the fluid with different temperatures in the same heat exchange pipeline, the refrigeration capacity generated by the magnetic working medium is fully utilized, the driving device is arranged, the flowing power can be provided for the fluid in each heat exchange pipeline, the flowing direction of the fluid can be controlled, the complex fluid distribution method is avoided, and the system structure is simplified.
Description
Technical Field
The application relates to the technical field of magnetic refrigeration, in particular to a magnetic refrigerator.
Background
The magnetic refrigeration technology is a novel refrigeration technology based on the magnetocaloric effect, and the magnetocaloric effect refers to a physical phenomenon that a magnetocaloric material releases heat or absorbs heat when a magnetic field is increased or decreased. When the magnetic field magnetizes the magnetocaloric material, the magnetocaloric material becomes hot; when the magnetic field is removed, the magnetocaloric material becomes cold, and the purpose of refrigeration can be realized by utilizing the phenomenon of magnetocaloric effect, however, the existing rotary magnetic refrigerator has the problems of complex pipeline circulation, need of a fluid reversing distribution valve and the like.
Disclosure of Invention
In order to solve the above-mentioned problems, a magnetic refrigerator having a simple flow path and not using a distribution valve is provided.
A magnetic refrigerator comprises a rotating shaft, a plurality of heat exchange pipelines arranged on the periphery of the rotating shaft and at least two magnetic field generators, all the magnetic field generators are uniformly distributed on the rotating shaft, and at least one magnetic field generator is provided with a magnetizing space, at least one magnetic field generator is provided with a demagnetizing space, each heat exchange pipeline is connected with two magnetic heat material beds in series, all the magnetocaloric material beds are arranged in a magnetism exchanging area formed after the magnetism adding space and the magnetism removing space rotate, magnetism of magnetism exchanging areas of the two magnetocaloric material beds acting on the same heat exchanging pipeline at the same time is different, two ends of each heat exchanging pipeline form a hot end, two middle positions of the magnetocaloric material beds form a cold end, and fluid in each heat exchanging pipeline can flow between the two hot ends and the cold ends.
The two magnetocaloric material beds on each heat exchange pipeline are symmetrical about the axis of the rotating shaft.
The magnetic refrigerator further comprises a driving device, and the driving device is communicated with all the heat exchange pipelines.
The driving device is communicated with at least one hot end of each heat exchange pipeline.
The two hot ends of each heat exchange pipeline are communicated with the driving device, and fluid can flow back and forth in the heat exchange pipelines under the driving of the driving device.
The driving device comprises a plurality of piston mechanisms, one hot end of each heat exchange pipeline is communicated with one piston mechanism, and the phases of the two piston mechanisms matched with the same heat exchange pipeline are opposite. (the piston means may be provided directly at the end of the hot end remote from the bed of magnetocaloric material such that the piston means is capable of drawing fluid into the interior and discharging to form a reciprocating cycle)
The piston mechanism is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end far away from the magnetocaloric material bed, and the fluid outlet is communicated with the middle position of the hot end and the magnetocaloric material bed.
The fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valve of the fluid inlet points to the interior of the piston mechanism, and the flow direction of the one-way valve of the fluid outlet points to the middle position of the hot end and the magnetocaloric material bed.
The magnetic refrigerator further comprises a rotating power device and a piston mechanism driving structure, the rotating power device provides rotating power for the piston mechanism driving structure and/or the rotating shaft, and the piston mechanism driving structure is arranged on the rotating shaft and can drive all the piston mechanisms to reciprocate under the rotation of the rotating shaft.
The two piston mechanisms of each heat exchange pipeline are matched with one piston mechanism driving structure, and all the piston mechanism driving structures are arranged on the rotating shaft and drive the corresponding piston mechanisms along with the rotation of the rotating shaft.
The driving structure of the piston mechanism is a cam mechanism, push rods are arranged on the piston mechanism, and one ends of the piston mechanism corresponding to the protrusion of all push rods are in contact fit with the surface of the cam mechanism. (push rod, if necessary, can utilize the thrust of the opposite piston mechanism to reset or suck the other piston mechanism)
The driving device comprises a piston cylinder and a piston, wherein the piston is arranged in the piston cylinder and divides the two ends of the piston cylinder into two pressure cavities with variable volumes, and the two hot ends of each heat exchange pipeline are respectively communicated with the two pressure cavities on the same piston cylinder in a one-to-one correspondence manner. (the piston is driven by a reciprocating motor)
Each pressure cavity is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end far away from the magnetocaloric material bed, and the fluid outlet is communicated with the middle position of the hot end and the magnetocaloric material bed.
The fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valve of the fluid inlet points to the interior of the piston mechanism, and the flow direction of the one-way valve of the fluid outlet points to the middle position of the hot end and the magnetocaloric material bed.
The driving device comprises two-way pumps, each two-way pump is provided with two inlets and outlets, and two hot ends of each heat exchange pipeline are communicated with two inlets and outlets of the same two-way pump in one-to-one correspondence.
Each inlet and outlet is provided with a first communication pipeline and a second communication pipeline, the first communication pipeline is communicated with one end of the hot end, which is far away from the magnetocaloric material bed, and the second communication pipeline is communicated with the middle position of the hot end and the magnetocaloric material bed.
The first communicating pipeline and the second communicating pipeline are respectively provided with a check valve, the flow direction of the check valve of the first communicating pipeline points to the interior of the piston mechanism, and the flow direction of the check valve of the second communicating pipeline points to the middle position of the hot end and the magnetocaloric material bed.
Each magnetic field generator comprises a rotor and a stator, wherein all the rotors are uniformly distributed on the rotating shaft to form a rotor assembly and rotate along with the rotating shaft, all the stators are arranged on the outer side of the rotor assembly in a surrounding mode to form a stator assembly, an annular magnetic exchange area is formed between the stator assembly and the rotor assembly, and all the magnetocaloric material beds are fixedly arranged on the side faces of the stator assembly, facing the magnetic exchange area.
And a magnetic yoke is arranged on the side surface, away from the magnetism changing area, of the stator assembly.
The rotor and/or the stator are made of permanent magnets.
The magnetic field generator is provided with a concave part, the concave part forms the magnetizing space or the demagnetizing space, all the magnetic field generators are uniformly distributed on the rotating shaft, and all the concave parts rotate along with the rotating shaft to form the magnetism changing area.
The cross section of the magnetic field generator is C-shaped, and all C-shaped openings of the magnetic field generator face away from the rotating shaft.
The magnetic field generator consists of at least one permanent magnet; or the magnetic field generator consists of at least one permanent magnet and at least one soft magnet.
The magnetic refrigerator further comprises a cold end heat exchanger, and cold ends of all the heat exchange pipelines are arranged in the cold end heat exchanger in parallel for concentrated refrigeration; the magnetic refrigerator further comprises a hot end heat exchanger, and all hot ends of the heat exchange pipelines are arranged in the hot end heat exchanger in parallel to radiate heat intensively.
The magnetic refrigerator further comprises a rotary shaft driving mechanism, and the rotary shaft driving mechanism drives the rotary shaft to rotate directly or through a transmission mechanism.
The magnetic refrigerator further comprises a fan, the fan is arranged on the rotating shaft, and the air outlet of the fan faces to the hot end of the heat exchange pipeline.
The magnetic refrigerator provided by the application can ensure that each heat exchange pipeline is in an independent working state, does not interfere with each other and does not generate fluid exchange, and can ensure that the fluid needs to be demagnetized and radiated through the magnetocaloric material beds when flowing to the cold end through the two magnetocaloric material beds, so that the refrigeration capacity is prevented from being reduced due to the mixing of the fluid with different temperatures in the same heat exchange pipeline, the refrigeration capacity generated by the magnetic working medium is fully utilized, the driving device is arranged, the flowing power can be provided for the fluid in each heat exchange pipeline, the flowing direction of the fluid can be controlled, the complex fluid distribution method is avoided, and the system structure is simplified.
Drawings
FIG. 1 is a schematic diagram of a magnetic refrigerator according to the present application;
FIG. 2 is a schematic diagram of another configuration of a magnetic refrigerator according to the present application;
FIG. 3 is a schematic diagram of another configuration of a magnetic refrigerator according to the present application;
FIG. 4 is a schematic diagram of another configuration of a magnetic refrigerator according to the present application;
FIG. 5 is a schematic diagram of another configuration of a magnetic refrigerator according to the present application;
FIG. 6 is a side view of a magnetic refrigerator according to the present application
In the figure:
1. a rotation shaft; 2. a heat exchange pipeline; 3. a magnetic field generator; 4. a piston mechanism; 5. a cam mechanism; 6. a piston cylinder; 7. a piston; 61. a pressure chamber; 11. a bed of magnetocaloric material; 22. a hot end; 21. a cold end; 31. a rotor; 32. a stator; 33. a recessed portion; 41. a first piston mechanism; 42. a second piston mechanism; 111. a first bed of magnetocaloric material; 112. a second bed of magnetocaloric material; 10. a hot side heat exchanger; 9. a cold end heat exchanger.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The magnetic refrigerator shown in fig. 1 to 6 comprises a rotating shaft 1, a plurality of heat exchange pipelines 2 arranged on the periphery of the rotating shaft 1, and at least two magnetic field generators 3, wherein all the magnetic field generators 3 are uniformly distributed on the rotating shaft 1, at least one magnetic field generator 3 is provided with a magnetizing space, at least one magnetic field generator 3 is provided with a demagnetizing space, each heat exchange pipeline 2 is serially provided with two magnetic heat material beds 11, all the magnetic heat material beds 11 are arranged in a magnetism exchange area formed by rotating the magnetizing space and the demagnetizing space, magnetism of magnetism exchange areas of the two magnetic heat material beds 11 acting on the same heat exchange pipeline 2 at the same moment is different, two ends of each heat exchange pipeline 2 form a hot end 22, the middle positions of the two magnetic heat material beds 11 form a cold end 21, and the fluid in each heat exchange pipeline 2 can flow between the two hot ends 22 and the cold ends 21, all the magnetic field generators 3 rotate along with the rotating shaft 1, so that all the magnetocaloric material beds 11 are continuously positioned in the space subjected to magnetization and demagnetization, and then are continuously magnetized and demagnetized, the fluid in the interior of the magnetocaloric material beds is magnetized or demagnetized, the temperature change is realized in the magnetization or demagnetization process, the temperature of all the fluid passing through the demagnetization space is reduced and flows to the cold ends 21 to absorb heat to achieve the refrigeration effect, the fluid passing through the cold ends 21 flows to the magnetization space to be magnetized, the temperature is increased and flows to the hot ends 22 to dissipate heat, for the same heat exchange pipeline 2, the magnetocaloric material beds 11 of the internal fluid flowing to the cold ends 21 are positioned in the demagnetization space, and all the fluid passing through the magnetocaloric material beds 11 is demagnetized and cooled to flow to the cold ends 21 to absorb heat, meanwhile, the other magnetocaloric material bed 11 on the heat exchange pipeline 2 is positioned in a magnetizing space, fluid passing through the other magnetocaloric material bed is magnetized and heated, and flows to the hot ends 22 to dissipate heat, meanwhile, all the magnetic field generators 3 rotate along with the rotating shaft 1, the positions of the magnetizing space and the demagnetizing space are changed, the flowing direction of the fluid in the heat exchange pipeline 2 is changed, and further continuous refrigeration is kept at the cold ends 21, and heat dissipation is carried out at the two hot ends 22 of the heat exchange pipeline 2.
Wherein all the fluid flowing in the heating pipeline 2 is magnetic working medium.
The two magnetocaloric material beds 11 on each heat exchange pipeline 2 are symmetrical with respect to the axis of the rotating shaft 1, so that the heat exchange pipeline 2 is convenient to install, and all the magnetic field generators 3 are also convenient to install.
The magnetic refrigerator further comprises a driving device, the driving device is communicated with all the heat exchange pipelines 2, the change of the flow direction of fluid in all the heat exchange pipelines 2 is realized through the driving device, meanwhile, the driving device is matched with all the magnetic field generators 3, the magnetic field space where the magnetocaloric material bed 11 is located is changed while the flow direction is changed, and the continuous refrigeration of the fluid passing through the cold end 21 is ensured.
The driving device is communicated with at least one hot end 22 of each heat exchange pipeline 2, and the driving mode can adopt the modes of sucking, exhausting and the like to drive the fluid flow and change of the flow direction by driving the flow direction of the fluid in the heat exchange pipeline 2 at the hot end 22.
The two hot ends 22 of each heat exchange pipeline 2 are communicated with the driving device, and fluid can flow back and forth in the heat exchange pipelines 2 under the drive of the driving device.
The driving device comprises a plurality of piston mechanisms 4, one hot end 22 of each heat exchange pipeline 2 is communicated with one piston mechanism 4, and the phases of the two piston mechanisms 4 matched with the same heat exchange pipeline 2 are opposite, wherein the piston mechanisms 4 can be directly arranged at one end of the hot end 22, which is far away from the magnetocaloric material bed 11, so that the piston mechanisms 4 can suck fluid into the interior and discharge the fluid to form reciprocating circulation.
The piston mechanism 4 is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end 22 away from the magnetocaloric material bed 11, the fluid outlet is communicated with the middle position of the hot end 22 and the magnetocaloric material bed 11, so that the fluid passes through the hot end 22 to dissipate heat in the process of sucking the fluid by the piston mechanism 4, and the fluid directly flows out from the fluid outlet to enter the magnetocaloric material bed 11 for demagnetization and cooling and flows to the cold end 21 for refrigeration when the fluid is discharged.
The fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valve of the fluid inlet points to the interior of the piston mechanism 4, the flow direction of the one-way valve of the fluid outlet points to the middle position of the hot end 22 and the magnetocaloric material bed 11, the one-way flow of fluid is ensured by the one-way conduction principle of the one-way valve, and the problem of using a fluid distribution valve is avoided.
The magnetic refrigerator further comprises a rotating power device and a piston mechanism 4 driving structure, the rotating power device provides rotating power for the piston mechanism 4 driving structure and/or the rotating shaft 1, the piston mechanism 4 driving structure is arranged on the rotating shaft 1 and can drive all the piston mechanisms 4 to reciprocate under the rotation of the rotating shaft 1, and two piston mechanisms 4 in the same heat exchange pipeline 2 can be driven by one or two piston mechanism 4 driving structures to drive the two piston mechanisms 4 to drive fluid in the heat exchange pipeline 2 to flow in a state with opposite phases.
The two piston mechanisms 4 of each heat exchange pipeline 2 are matched with one piston mechanism 4 driving structure, and all the piston mechanism 4 driving structures are arranged on the rotating shaft 1 and drive the corresponding piston mechanisms 4 along with the rotation of the rotating shaft 1.
The driving structure of the piston mechanism 4 is a cam mechanism 5, push rods are arranged on the piston mechanism 4, one ends of the piston mechanisms 4 corresponding to the push rods in a protruding mode are in contact fit with the surface of the cam mechanism 5, and the push rods can reset or absorb liquid by utilizing the thrust of the opposite piston mechanisms 4 to enable the other piston mechanism 4 in the same heat exchange pipeline 2, so that the purpose of fluid flow in the whole heat exchange pipeline 2 is achieved.
The driving device comprises a piston cylinder 6 and a piston 7, the piston 7 is arranged in the piston cylinder 6 and divides the two ends of the piston cylinder 6 into two pressure chambers 61 with variable volumes, the two hot ends 22 of each heat exchange pipeline 2 are respectively communicated with the two pressure chambers 61 on the same piston cylinder 6 in a one-to-one correspondence manner, and the process of sucking or discharging fluid in the heat exchange pipeline 2 is realized through the volume change of the two pressure chambers 61.
Wherein the maximum volume of the pressure chamber 61 ensures a proper flow of fluid in the heat exchange line 2.
Each pressure chamber 61 is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end 22 away from the magnetocaloric material bed 11, and the fluid outlet is communicated with the middle position of the hot end 22 and the magnetocaloric material bed 11.
The fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valves of the fluid inlet is directed to the interior of the piston mechanism 4, and the flow direction of the one-way valves of the fluid outlet is directed to the middle position of the hot end 22 and the magnetocaloric material bed 11.
The driving device comprises two-way pumps 8, each two-way pump 8 is provided with two inlets and outlets, and two hot ends 22 of each heat exchange pipeline 2 are correspondingly communicated with the two inlets and outlets of the same two-way pump 8 one by one.
Each inlet and outlet is provided with a first communication pipeline and a second communication pipeline, the first communication pipeline is communicated with one end of the hot end 22, which is far away from the magnetocaloric material bed 11, and the second communication pipeline is communicated with the middle position of the hot end 22 and the magnetocaloric material bed 11.
The first communicating pipeline and the second communicating pipeline are respectively provided with a check valve, the flow direction of the check valve of the first communicating pipeline points to the inside of the piston mechanism 4, and the flow direction of the check valve of the second communicating pipeline points to the middle position of the hot end 22 and the magnetocaloric material bed 11.
Each magnetic field generator 3 includes a rotor 31 and a stator 32, all the rotors 31 are uniformly distributed on the rotating shaft 1 to form rotor 31 components and rotate along with the rotating shaft 1, all the stators 32 are arranged around the outer side of the rotor 31 components to form stator 32 components, annular magnetism changing areas are formed between the stator 32 components and the rotor 31 components, all the magnetocaloric material beds 11 are fixedly arranged on the side surfaces of the stator 32 components facing the magnetism changing areas, the magnetism adding space and the magnetism removing space are changed through rotation of the rotors 31, and the magnetism adding or the magnetism removing of fluid in the magnetocaloric material beds 11 in the magnetism changing areas is realized.
The side of the stator 32 component far away from the magnetism changing area is provided with a magnetic yoke, and the magnetic yoke is made of soft magnetic materials, so that the effect of a magnetism adding space or a magnetism removing space is improved, and the refrigerating capacity is increased.
The rotor 31 and/or the stator 32 are made of permanent magnets.
The concave part 33 is arranged on the magnetic field generator 3, the concave part 33 forms the magnetizing space or the demagnetizing space, all the magnetic field generators 3 are uniformly distributed on the rotating shaft 1, all the concave parts 33 rotate along with the rotating shaft 1 to form the magnetism changing region, preferably, the concave parts 33 are all positioned in the same plane perpendicular to the axis of the rotating shaft 1, so that the magnetism changing region is an annular space, all the magnetocaloric material beds 11 are arranged in the annular space and distributed circularly, and all the magnetocaloric material beds 11 are conveniently arranged.
The magnetic field generator 3 is C-shaped in cross section, and all C-shaped openings of the magnetic field generator 3 are directed away from the rotation axis 1.
The magnetic field generator 3 consists of at least one permanent magnet; or the magnetic field generator 3 is composed of at least one permanent magnet and at least one soft magnet.
The magnetic refrigerator further comprises a cold end heat exchanger 9, and cold ends 21 of all the heat exchange pipelines 2 are arranged in parallel in the cold end heat exchanger 9 for concentrated refrigeration; the magnetic refrigerator further comprises a hot-end heat exchanger 10, and all hot ends 22 of the heat exchange pipelines 2 are arranged in parallel in the hot-end heat exchanger 10 for concentrated heat dissipation.
The magnetic refrigerator further comprises a rotating shaft 1 driving mechanism, and the rotating shaft 1 driving mechanism directly or through a transmission mechanism drives the rotating shaft 1 to rotate.
The magnetic refrigerator further comprises a fan, the fan is arranged on the rotating shaft 1, and the air outlet of the fan faces the hot end 22 of the heat exchange pipeline 2, so that the heat dissipation effect of the hot end 22 is improved.
Example 1
The number of the magnetic field generator 3 and the magnetocaloric material bed 11 is two, the magnetic field generator 3 and the magnetocaloric material bed 11 are all in a semicircular structure, the magnetic field generator 3 comprises a rotor 31 and a stator 32, the rotor 31 of the magnetic field generator 3 is in a circular structure and sleeved on the rotating shaft 1, the two stators 32 are arranged on the outer side of the circular structure and form an annular magnetism changing area with the circular structure, and the two magnetocaloric material beds 11 are located in the annular magnetism changing area.
The driving device is a cam and a piston mechanism 4, the cam is fixedly arranged on the rotating shaft 1 and rotates freely along with the rotating shaft 1, and meanwhile, the outer surface of the cam is matched with the two piston mechanisms 4 to drive the two piston mechanisms 4 to move in a state of opposite phases.
The cycle of the magnetic refrigerator of the present application is divided into two cycles:
in the pre-cycle:
the rotation of the cam causes the first piston means 41 to drain and the second piston means 42 to collect liquid, while the rotation of the rotor 31 of the magnetic field generator 3 causes the first bed 111 of magnetocaloric material to demagnetize and the second bed 112 of magnetocaloric material to magnetize. The fluid flows from the first magnetocaloric material bed 111 to the second magnetocaloric material bed 112, and at the same time, the liquid leaving the first piston mechanism 41 cannot flow to the second hot end heat exchanger 10 due to the stop effect of the check valve, only flows through the check valve to the first magnetocaloric material bed 111 in the demagnetized state, flows to the cold end heat exchanger 9 for heat exchange after absorbing cold energy, then enters the second magnetocaloric material bed 112 in the magnetized state, and only flows to the first hot end heat exchanger 10 for heat exchange due to the stop effect of the check valve after absorbing heat energy, and then flows to the second piston mechanism 42 through the check valve. In the previous cycle, the heat exchange fluid in the completed first piston mechanism 41 passes through the system piping to the second piston mechanism 42;
in the latter cycle, rotation of the cam means causes the first piston means 41 to collect liquid and the second piston means 42 to drain liquid, while rotation of the rotor 31 of the magnetic field generator 3 causes the first bed 111 of magnetocaloric material and the second bed 112 of magnetocaloric material to demagnetize. The fluid flows to the second magnetocaloric material bed 112 to the first magnetocaloric material bed 111, and at the same time, the fluid leaving the second piston mechanism 42 cannot flow to the first hot end heat exchanger 10 due to the stop action of the check valve, and only flows to the second magnetocaloric material bed 112 in the demagnetized state through the check valve, and flows to the cold end heat exchanger 9 for heat exchange after obtaining cold energy, then enters the first magnetocaloric material bed 111 in the magnetized state, and after absorbing heat, only flows to the second hot end heat exchanger 10 for heat exchange due to the stop action of the check valve, and then flows back to the first piston mechanism 41 through the check valve, thus completing the post-cycle, and repeating the pre-cycle and the post-cycle in the next cycle.
The arrow direction as in fig. 1 to 5: the solid arrows indicate the flow direction of the fluid in the preceding cycle, and the dashed arrows indicate the flow direction of the fluid in the following cycle.
Example 2
Unlike example 1, the magnetic field generator is C-shaped in cross section, and the opening of the C-shape faces away from the rotation axis, and the two magnetocaloric material beds 11 are located in the annular magnetism exchanging region formed by the rotation of the C-shaped opening.
Example 3
Unlike in embodiment 2, the number of the magnetic field generators 3 is plural, and plural annular magnetism changing regions are formed on the circumferential side of the rotation shaft, and the number of the magnetocaloric material beds 11 is plural, and distributed in different annular magnetism changing regions as needed.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (23)
1. A magnetic refrigerator, which comprises a main body and a plurality of auxiliary bodies, the method is characterized in that: the heat exchange device comprises a rotating shaft (1), a plurality of heat exchange pipelines (2) and at least two magnetic field generators (3), wherein the plurality of heat exchange pipelines (2) are arranged on the periphery of the rotating shaft (1), all the magnetic field generators (3) are uniformly distributed on the rotating shaft (1), at least one magnetic field generator (3) is provided with a magnetizing space, at least one magnetic field generator (3) is provided with a demagnetizing space, two magnetic heat material beds (11) are arranged on each heat exchange pipeline (2) in series, all the magnetic heat material beds (11) are arranged in a magnetizing area formed by rotating the magnetizing space and the demagnetizing space, the magnetism of the magnetic heat exchange areas of the two magnetic heat material beds (11) acting on the same heat exchange pipeline (2) at the same time is different, two ends of each heat exchange pipeline (2) form a hot end (22), each heat exchange pipeline (2) forms a cold end (21) at the middle position of the two magnetic heat exchange pipelines (11), and each heat exchange pipeline (2) can flow between the two cold ends (22) and the cold end (21); the magnetic refrigerator further comprises a driving device which is communicated with all the heat exchange pipelines (2); the driving device comprises a plurality of piston mechanisms (4), one hot end (22) of each heat exchange pipeline (2) is communicated with one piston mechanism (4), and the phases of the two piston mechanisms (4) matched with the same heat exchange pipeline (2) are opposite; the piston mechanism (4) is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end (22) far away from the magnetocaloric material bed (11), and the fluid outlet is communicated with the middle position of the hot end (22) and the magnetocaloric material bed (11).
2. The magnetic refrigerator of claim 1, wherein: the two beds of magnetocaloric material (11) on each heat exchange line (2) are symmetrical with respect to the axis of the rotation shaft (1).
3. The magnetic refrigerator of claim 1, wherein: the driving device is communicated with at least one hot end (22) of each heat exchange pipeline (2).
4. A magnetic refrigerator according to claim 3, wherein: the two hot ends (22) of each heat exchange pipeline (2) are communicated with the driving device, and fluid can flow back and forth in the heat exchange pipelines (2) under the driving of the driving device.
5. The magnetic refrigerator of claim 1, wherein: the fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valves of the fluid inlet is directed towards the inside of the piston mechanism (4), and the flow direction of the one-way valves of the fluid outlet is directed towards the middle position of the hot end (22) and the magnetocaloric material bed (11).
6. The magnetic refrigerator of claim 5, wherein: the magnetic refrigerator further comprises a rotating power device and a piston mechanism driving structure, the rotating power device provides rotating power for the piston mechanism driving structure and/or the rotating shaft (1), and the piston mechanism driving structure is arranged on the rotating shaft (1) and can drive all the piston mechanisms (4) to reciprocate under the rotation of the rotating shaft (1).
7. The magnetic refrigerator of claim 6, wherein: two piston mechanisms (4) of each heat exchange pipeline (2) are matched with one piston mechanism driving structure, and all the piston mechanism driving structures are arranged on the rotating shaft (1) and drive the corresponding piston mechanisms (4) along with the rotation of the rotating shaft (1).
8. The magnetic refrigerator of claim 7, wherein: the driving structure of the piston mechanism is a cam mechanism (5), push rods are arranged on the piston mechanism (4), and one ends of the piston mechanism (4) corresponding to the protruding of all push rods are in contact fit with the surface of the cam mechanism (5).
9. The magnetic refrigerator of claim 1, wherein: the driving device comprises a piston cylinder (6) and a piston (7), wherein the piston (7) is arranged in the piston cylinder (6) and divides the two ends of the piston cylinder (6) into two pressure cavities (61) with variable volumes, and the two hot ends (22) of each heat exchange pipeline (2) are respectively communicated with the two pressure cavities (61) on the same piston cylinder (6) in a one-to-one correspondence manner.
10. The magnetic refrigerator of claim 9, wherein: each pressure cavity (61) is provided with a fluid inlet and a fluid outlet, the fluid inlet is communicated with one end of the hot end (22) far away from the magnetocaloric material bed (11), the fluid outlet communicates with the hot end (22) and with an intermediate position of the bed (11) of magnetocaloric material.
11. The magnetic refrigerator of claim 10, wherein: the fluid inlet and the fluid outlet are both provided with one-way valves, the flow direction of the one-way valves of the fluid inlet is directed towards the inside of the piston mechanism (4), and the flow direction of the one-way valves of the fluid outlet is directed towards the middle position of the hot end (22) and the magnetocaloric material bed (11).
12. The magnetic refrigerator of claim 1, wherein: the driving device comprises two-way pumps, each two-way pump is provided with two inlets and outlets, and two hot ends (22) of each heat exchange pipeline (2) are correspondingly communicated with the two inlets and outlets of the same two-way pump one by one.
13. The magnetic refrigerator of claim 12, wherein: each inlet and outlet is provided with a first communication pipeline and a second communication pipeline, the first communication pipeline is communicated with one end of the hot end (22) far away from the magnetocaloric material bed (11), and the second communication pipeline is communicated with the middle position of the hot end (22) and the magnetocaloric material bed (11).
14. The magnetic refrigerator of claim 13, wherein: the first communication pipeline and the second communication pipeline are respectively provided with a check valve, the flow direction of the check valve of the first communication pipeline points to the inside of the piston mechanism (4), and the flow direction of the check valve of the second communication pipeline points to the middle position of the hot end (22) and the magnetocaloric material bed (11).
15. The magnetic refrigerator of claim 1, wherein: each magnetic field generator (3) comprises a rotor (31) and a stator (32), all the rotors (31) are uniformly distributed on the rotating shaft (1) to form rotor (31) components and rotate along with the rotating shaft (1), all the stators (32) are arranged around the outer sides of the rotor (31) components to form stator (32) components, annular magnetic exchange areas are formed between the stator (32) components and the rotor (31) components, and all the magnetic heat material beds (11) are fixedly arranged on the side faces of the stator (32) components facing the magnetic exchange areas.
16. The magnetic refrigerator of claim 15, wherein: a magnetic yoke is arranged on the side of the stator (32) component, which is far away from the magnetic exchange area.
17. The magnetic refrigerator of claim 15, wherein: the rotor (31) and/or the stator (32) are made of permanent magnets.
18. The magnetic refrigerator of claim 1, wherein: the magnetic field generator (3) is provided with a concave part (33), the concave part (33) forms the magnetizing space or the demagnetizing space, all the magnetic field generators (3) are uniformly distributed on the rotating shaft (1), and all the concave parts (33) rotate along with the rotating shaft (1) to form the magnetism changing region.
19. The magnetic refrigerator of claim 18, wherein: the cross section of the magnetic field generator (3) is C-shaped, and the C-shaped openings of all the magnetic field generators (3) face away from the rotating shaft (1).
20. The magnetic refrigerator of claim 18, wherein: the magnetic field generator (3) consists of at least one permanent magnet; or the magnetic field generator (3) is composed of at least one permanent magnet and at least one soft magnet.
21. The magnetic refrigerator of claim 1, wherein: the magnetic refrigerator further comprises a cold end heat exchanger (9), and cold ends (21) of all the heat exchange pipelines (2) are arranged in parallel in the cold end heat exchanger (9) for concentrated refrigeration; the magnetic refrigerator further comprises a hot-end heat exchanger (10), and all hot ends (22) of the heat exchange pipelines (2) are arranged in parallel in the hot-end heat exchanger (10) for concentrated heat dissipation.
22. The magnetic refrigerator of claim 1, wherein: the magnetic refrigerator further comprises a rotary shaft driving mechanism, and the rotary shaft driving mechanism drives the rotary shaft (1) to rotate directly or through a transmission mechanism.
23. The magnetic refrigerator of claim 1, wherein: the magnetic refrigerator further comprises a fan, the fan is arranged on the rotating shaft (1), and the air outlet of the fan faces to the hot end (22) of the heat exchange pipeline (2).
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| CN201711141005.6A CN107726664B (en) | 2017-11-16 | 2017-11-16 | Magnetic Refrigerator |
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| CN201711141005.6A CN107726664B (en) | 2017-11-16 | 2017-11-16 | Magnetic Refrigerator |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679875B (en) * | 2018-04-10 | 2020-08-07 | 中科磁凌（北京）科技有限公司 | Room temperature magnetic refrigeration system with multiple refrigeration temperature areas |
| CN108895704B (en) * | 2018-06-12 | 2020-08-18 | 西安交通大学 | Variable load control system of rotary room temperature magnetic refrigerator and control method thereof |
| CN109186124B (en) * | 2018-09-10 | 2023-07-11 | 珠海格力电器股份有限公司 | Magnetic refrigerator magnet assembly structure, magnetic refrigerator and control method of magnetic refrigerator |
| CN109506389B (en) * | 2018-11-08 | 2020-05-19 | 珠海格力电器股份有限公司 | Magnetic refrigeration heat exchange system |
| CN109612150B (en) * | 2018-11-15 | 2020-06-26 | 珠海格力电器股份有限公司 | Magnetic refrigeration system |
| CN109654765B (en) * | 2018-11-28 | 2024-05-03 | 珠海格力电器股份有限公司 | Magnetic refrigeration equipment and heat exchange system thereof |
| CN109780751A (en) * | 2018-12-24 | 2019-05-21 | 珠海格力电器股份有限公司 | A kind of magnetic refrigerating system |
| CN111912136A (en) * | 2019-05-09 | 2020-11-10 | 珠海格力电器股份有限公司 | Magnetic refrigerating device |
| CN110887268B (en) * | 2019-10-14 | 2021-07-30 | 珠海格力电器股份有限公司 | Magnetic refrigeration regenerator and magnetic refrigeration system |
| CN114484925B (en) * | 2021-12-08 | 2024-02-20 | 包头稀土研究院 | High-efficiency reaction type magnetic refrigerator and heat exchange method |
| CN114245669B (en) * | 2021-12-15 | 2022-09-23 | 珠海格力电器股份有限公司 | Valve assembly, heat exchange assembly, cabinet cluster temperature control system and method and air conditioner room |
| CN114251866B (en) * | 2022-03-01 | 2022-06-07 | 南通市海门雪盾冷冻设备有限公司 | Transmission mechanism for magnetic refrigerator |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106999A (en) * | 2000-10-02 | 2002-04-10 | Toshiba Corp | Magnetic refrigerating device |
| EP1736717A1 (en) * | 2005-06-20 | 2006-12-27 | Haute Ecole d'Ingénieurs et de Gestion du Canton | Continuously rotary magnetic refrigerator and heat pump and process for magnetic heating and/or cooling with such a refrigerator or heat pump |
| CN101135510A (en) * | 2007-10-19 | 2008-03-05 | 中国科学院电工研究所 | Heat exchange system of permanent magnetism rotary type magnetic refrigerating device |
| CN102778074A (en) * | 2011-05-13 | 2012-11-14 | 株式会社电装 | Thermo-magnetic cycle apparatus |
| CN103148634A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Rotary type room-temperature magnetic refrigerator based on AMR (active magnetic regenerator) |
| WO2015199139A1 (en) * | 2014-06-26 | 2015-12-30 | 国立研究開発法人物質・材料研究機構 | Magnetic refrigerating device |
| CN105526733A (en) * | 2014-09-29 | 2016-04-27 | 青岛海尔股份有限公司 | Reciprocating type magnetic refrigeration device |
| CN105650931A (en) * | 2014-11-10 | 2016-06-08 | 青岛海尔股份有限公司 | Reciprocating magnetic refrigeration device |
| CN207865754U (en) * | 2017-11-16 | 2018-09-14 | 珠海格力电器股份有限公司 | Magnetic refrigerator |
-
2017
- 2017-11-16 CN CN201711141005.6A patent/CN107726664B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106999A (en) * | 2000-10-02 | 2002-04-10 | Toshiba Corp | Magnetic refrigerating device |
| EP1736717A1 (en) * | 2005-06-20 | 2006-12-27 | Haute Ecole d'Ingénieurs et de Gestion du Canton | Continuously rotary magnetic refrigerator and heat pump and process for magnetic heating and/or cooling with such a refrigerator or heat pump |
| CN101135510A (en) * | 2007-10-19 | 2008-03-05 | 中国科学院电工研究所 | Heat exchange system of permanent magnetism rotary type magnetic refrigerating device |
| CN102778074A (en) * | 2011-05-13 | 2012-11-14 | 株式会社电装 | Thermo-magnetic cycle apparatus |
| CN103148634A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Rotary type room-temperature magnetic refrigerator based on AMR (active magnetic regenerator) |
| WO2015199139A1 (en) * | 2014-06-26 | 2015-12-30 | 国立研究開発法人物質・材料研究機構 | Magnetic refrigerating device |
| CN105526733A (en) * | 2014-09-29 | 2016-04-27 | 青岛海尔股份有限公司 | Reciprocating type magnetic refrigeration device |
| CN105650931A (en) * | 2014-11-10 | 2016-06-08 | 青岛海尔股份有限公司 | Reciprocating magnetic refrigeration device |
| CN207865754U (en) * | 2017-11-16 | 2018-09-14 | 珠海格力电器股份有限公司 | Magnetic refrigerator |
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