CN110375459A - A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration - Google Patents
A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration Download PDFInfo
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- CN110375459A CN110375459A CN201910735288.XA CN201910735288A CN110375459A CN 110375459 A CN110375459 A CN 110375459A CN 201910735288 A CN201910735288 A CN 201910735288A CN 110375459 A CN110375459 A CN 110375459A
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
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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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- General Engineering & Computer Science (AREA)
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration, the regenerator includes: the shell (2) with hollow cavity, in the hollow cavity along fluid flow direction be provided with more than one reticular structure (23), the hollow cavity to be separated into more than two magnetic working medium layer chambers (22), the different magnetic working medium of setting in the different magnetic working medium layer chamber (22), and the reticular structure (23) can allow heat exchanging fluid by preventing magnetic working medium from passing through.It can guarantee that there is good fit sealing between adjacent magnetic working medium layer chamber through the invention, mutually alter there is a phenomenon where magnetic working medium mixes between adjacent magnetic working medium layer chamber, it avoids mutually blending between the magnetic working medium of different layers, effectively increases the performance of magnetic regenerator.
Description
Technical field
The invention belongs to magnetic refrigeration technology fields, and in particular to a kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration.
Background technique
Magnetic Refrigeration Technique is a kind of solid-state refrigeration modes based on magnetothermal effect, using the environmentally friendly medium such as water as heat transfer
Fluid has the characteristics that zero GWP, zero odp, intrinsic efficient, low noise and low vibration, compared to low temperature field, in room temperature range
Interior, magnetic, which freezes, the application in the fields such as broader practice prospect, such as domestic refrigerator, air-conditioning, medical and health care system.Therefore
Nearly most attention of the more than ten years room temperature magnetic refrigerating technical research by countries in the world, and obtain some achievements to attract worldwide attention.Magnetic
Core component of the regenerator (regenerator) as magnetic refrigerator is built-in with porous media (magnetic working medium) and flows through for heat exchanging fluid,
Presently, there are following problems for magnetic regenerator:
Firstly, fluid inlet flows into magnetic work filler with a lesser contact area, cause flow uniformity insufficient.Its
Secondary, for the magnetic regenerators of the multilayers magnetic working medium such as graininess, powdered, irregular sheet, bits shape, there are what magnetic working medium mixed to ask
Topic, other than part magnetic regenerator is not due to having layer and layer barrier structure, reason, which also resides between cover board and barrier structure, to be existed
Gap is easy to happen different magnetic working medium and flees in the gap under the impact of heat exchanging fluid, to influence the property of magnetic regenerator
Energy.For example although patent application CN109323481A refers to barrier structure but without specifically netted barrier structure and shell
The assembly of body, there are the deformations of the pressure lower case of fluid to lead between reticular structure and shell that there are gaps, so as to cause difference
Magnetic working medium is fled in the gap.
Third, at present there is axial heat conduction problem in cold-storage bed system.Known magnetic working medium (especially has single order phase
The material of change) the shortcomings that first is that the relatively narrow temperature range that magnetothermal effect occurs, universal solution is edge at present
Regenerator packed bed direction (fluid flow direction) by the magnetic working medium hierarchical design with different Curie temperature, such as patent
Apply for CN109323481A, but do not refer to the form and material of specific reticular structure wherein, conventional reticular structure, exist by
It is big in contact area between layers and there are more serious axial heat transfer (fluid flow direction).Axial thermal conductivity is to magnetic
The runnability of regenerator has a great impact, especially running frequency is lower, flow rate is lower and regenerator packed bed is axially long
Spend it is lesser under the conditions of influence it is more serious.
4th, at present regenerator used in rotary room-temperature magnetic refrigerator (regenerator) body shape mainly have cylindrical body,
The structures such as cuboid, circular ring shape, sector, tiles.For cylindrical type often can by two end cap using be threadedly coupled realize compared with
Good sealing structure；However for the regenerator of most of other shapes often by the shell, cover board and sealing of regenerator
Part composition is fastened by screw, so that leakage is easy to happen in the actual use process, especially for powdered, particle
Shape, irregular sheet, consider to be worth doing shape equimagnetic working medium filler mode regenerator for, heat exchanging fluid flow resistance is big, so that requiring regenerator
Voltage endurance capability it is high, conventional sealing ring, gasket add the sealing means of screw to be easy to happen leakage.Or it is conventional using glue
Water bonding or other mechanical seals, have the shortcomings that non-dismountable.
It is insufficient due to that can have heat exchanging fluid flow uniformity in magnetic regenerator in the prior art when filler pan feeding；Magnetic
Magnetic working medium in regenerator is easily fled between layers；The magnetic working medium of magnetic regenerator filler exists more between layers
Serious axial direction heat transfer；Magnetic regenerator is easy to happen heat exchanging fluid leakage.Etc. technical problems, therefore researching and designing of the present invention
A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration out.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the magnetic working medium layer in magnetic regenerator in the prior art
The defect easily fled between layer, to provide a kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration.
The present invention provides a kind of regenerator for magnetic refrigeration comprising:
Shell with hollow cavity is provided in the hollow cavity more than one netted along fluid flow direction
Structure, with by the hollow cavity be separated into more than two magnetic working medium layer chambers, be arranged in the different magnetic working medium layer chamber it is different
Magnetic working medium, and the reticular structure can allow heat exchanging fluid by preventing magnetic working medium from passing through, and the hollow cavity
Card slot is additionally provided at the position that inner wall connects with the reticular structure, to allow the reticular structure to be arranged in wherein.
Preferably,
The reticular structure includes two layers or more of mesh sheet, and described two layers or more of mesh sheet includes the first mesh sheet and second
Mesh sheet, and there is gap, and the reticular structure further includes that connection setting exists between first mesh sheet and second mesh sheet
The mesh sheet fixed structure of the same side of first mesh sheet and second mesh sheet, by the mesh sheet fixed structure with by institute
Reticular structure is stated to be inserted into the card slot.
Preferably,
There are two the mesh sheet fixed structures, and a mesh sheet fixed structure setting is in first mesh sheet and described
The another of first mesh sheet and second mesh sheet is arranged in the same side of second mesh sheet, another described mesh sheet fixed structure
It is outer ipsilateral.
Preferably,
It is additionally provided with binding structure in first mesh sheet and/or the second mesh sheet, and/or, the width in the gap is
0.2~1.5mm.
Preferably,
The reticular structure includes at least one rigid web plate with multiple holes, is directly blocked by the rigid web plate
If into the card slot.
Preferably,
It is described rigidity web plate with a thickness of 0.7~2.5mm.
Preferably,
The reticular structure is made of heat-barrier material；And/or the cross-sectional shape of the reticular structure is rectangle, circle
It is shape, sector, trapezoidal, oval or U-shaped；And/or there is the reticular structure mesh number range of multiple mesh and its mesh to exist
Between 2-150 and/or the mesh is at least one of round, triangle and quadrangle.
Preferably,
The Curie temperature of magnetic working medium in more than two magnetic working medium layer chambers on along fluid flow direction gradually
It increaseds or decreases.
Preferably,
The regenerator includes fluid inlet and fluid outlet, and in the fluid inlet and is located at fluid flow direction
Inlet plenum is additionally provided between the reticular structure of most upstream, the inlet plenum passes through the reticular structure and the netted knot
The adjacent magnetic working medium layer chamber connection of structure.
Preferably,
The shell is integrally formed structures, and the side of the shell is provided with multiple openings, the opening with
The reticular structure is arranged in a one-to-one correspondence, and the magnetic working medium layer chamber of the reticular structure two sides can respectively with the open communication,
To enter in magnetic working medium layer chamber from opening filling magnetic working medium or magnetic work be discharged by the magnetic working medium layer chamber and the opening
Matter.
Preferably,
Each opening is provided with sealing cover, and the internal perisporium of the opening is provided with internal screw thread, the sealing cover
Periphery wall on be provided with external screw thread, and the sealing cover can be connect with the open-top screw thread.
Preferably,
The shell offers the windowing communicated with outside, in the position of the hollow cavity to fill from the windowing
Magnetic working medium enters in magnetic working medium layer chamber or magnetic working medium is discharged by the magnetic working medium layer chamber and the windowing, and the regenerator is also
The position for being located at the windowing can be covered including upper cover, the upper cover to close to the windowing.
Preferably,
Be provided on the upper lid multiple first threaded holes, be located at around the windowing on the shell be provided with it is more
A second threaded hole, second threaded hole are arranged in a one-to-one correspondence with first threaded hole, to pass through multiple bolts or screw
First threaded hole and second threaded hole are fastened；And/or it is located at around the windowing on the shell and is arranged
There is the seal groove for surrounding the windowing, seal member can be set in the seal groove.
The present invention also provides a kind of magnetic refrigeration apparatus comprising preceding described in any item regenerators.
Preferably,
The regenerator be it is multiple, multiple regenerators can be connected to each other by connection structure or multiple storages
Cooler is integrally formed.
Preferably,
Multiple regenerators can be spliced to form each other a complete circle configurations in circumferencial direction.
One kind provided by the invention has the following beneficial effects: for magnetic refrigeration and cold accumulation device and magnetic refrigeration apparatus
1. the present invention in the inner hollow cavity of regenerator by being arranged reticular structure, multiple cavity to be separated into
Magnetic working medium layer chamber, and card slot, the side set by card is arranged in the position that reticular structure is docked with the inner wall of the hollow cavity
Reticular structure is caught in the card slot by formula, can effectively guarantee there is good fastening between adjacent magnetic working medium layer chamber
Leakproofness mutually alter there is a phenomenon where magnetic working medium mixes between adjacent magnetic working medium layer chamber, effectively prevents different layers
Magnetic working medium between mutually blend, effectively increase the performance of magnetic regenerator；
2. the present invention by by reticular structure using heat-barrier material production can effectively to adjacent magnetic working medium layer chamber it
Between play heat-insulated effect, effectively mitigate or prevent the thermally conductive of axial direction, further improve the performance of magnetic regenerator；
And passes through the gap between two layers of mesh sheet, can also effectively act as heat-insulated and insulation effect, mitigate or prevent axial side
To it is thermally conductive, further improve the performance of magnetic regenerator；
3. the present invention is also by being communicatively arranged inlet plenum in fluid inlet, fluid passes through elder generation after entering magnetic cold-storing bed
Magnetic cold-storing bed is entered back into full of a cavity, existing fluid is avoided and directly enters in magnetic working medium layer chamber from import and occur
The case where congestion, improves the uniformity of fluid flowing；And the present invention is designed even by magnetic regenerator integrated shell
Shell is provided with multiple threaded hole openings, can greatly avoid fluid leakage, so that sealing effect tends to most preferably, and square
Civilian dress, which is matched, to be readily disassembled.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of regenerator first embodiment of the invention；
Fig. 2 is the top view of regenerator first embodiment of the invention；
Fig. 3 is diagrammatic cross-section of the Fig. 2 along the direction A-A；
Fig. 4 is the decomposition diagram of the reticular structure in regenerator first embodiment of the invention；
Fig. 5 is the decomposition texture schematic diagram of regenerator second embodiment of the invention；
Fig. 6 is the assembling structure partial cross-sectional view of regenerator second embodiment of the invention；
Fig. 7 is diagrammatic cross-section of the Fig. 6 along the direction B-B；
Fig. 8 is the structural schematic diagram of the magnetic refrigeration apparatus with regenerator of the invention.
Appended drawing reference indicates in figure are as follows:
1, upper cover；11, the first threaded hole；2, shell；21, the second threaded hole；22, magnetic working medium layer chamber；23, reticular structure；
231, mesh sheet fixed structure；232, the first mesh sheet；233, the second mesh sheet；234, binding structure；235, rigid web plate；24, import
Chamber；25, seal groove；26, fluid inlet；27, fluid outlet；28, card slot；29, it opens a window；30, it is open；31, sealing cover；32,
Protrusion；34, the first quick coupling；35, the second quick coupling；36, the first connector；37, the second connector.
Specific embodiment
As shown in figures 1-8, the present invention provides a kind of regenerator for magnetic refrigeration comprising:
Shell 2 with hollow cavity is provided in the hollow cavity more than one netted along fluid flow direction
Structure 23, the hollow cavity is separated into more than two magnetic working medium layer chambers 22, is set in the different magnetic working medium layer chamber 22
Set different magnetic working medium, and the reticular structure 23 can allow heat exchanging fluid by preventing magnetic working medium from passing through, and it is described in
Card slot 28 is additionally provided at the position that the inner wall of absolutely empty chamber connects with the reticular structure 23, to allow the reticular structure 23
It is arranged in wherein.
The present invention by the inner hollow cavity of regenerator be arranged reticular structure, cavity is separated into multiple magnetic
Working medium layer chamber, and card slot is arranged in the position that reticular structure is docked with the inner wall of the hollow cavity, in such a way that card is set
Reticular structure is caught in the card slot, can effectively guarantee have good fastening close between adjacent magnetic working medium layer chamber
Feng Xing, mutually alter there is a phenomenon where magnetic working medium mixes between adjacent magnetic working medium layer chamber, effectively prevent different layers
It is mutually blended between magnetic working medium, effectively increases the performance of magnetic regenerator.
Preferably,
The reticular structure 23 includes two layers or more of mesh sheet, and described two layers or more of mesh sheet includes 232 He of the first mesh sheet
Second mesh sheet 233, and there is gap, and the reticular structure 23 between first mesh sheet 232 and second mesh sheet 233
Further include the mesh sheet fixed structure 231 that the same side of first mesh sheet 232 and second mesh sheet 233 is arranged in connection, leads to
The mesh sheet fixed structure 231 is crossed so that the reticular structure 23 to be inserted into the card slot 28.This is reticular structure of the invention
A kind of preferred implementing form, shown in Figure 4, part A structure, by being set to two and more than two mesh sheet,
And by mesh sheet fixed structure, effectively the end of the mesh sheet can be fixed, respectively its plug into card
In slot (because mesh sheet is relatively thin, the risk that may bend, end be arranged fixed structure with by mesh sheet successfully
Be inserted into card slot in), with reinforce it is affixed, prevent the channelling of magnetic working medium and leakage；And passes through the gap between two layers of mesh sheet, also can
Heat-insulated and insulation effect is effectively acted as, mitigates or prevents the thermally conductive of axial direction, further improve magnetic regenerator
Performance.
Preferably,
There are two the mesh sheet fixed structures 231, and a mesh sheet fixed structure 231 is arranged in first mesh sheet
232 and second mesh sheet 233 the same side, another described mesh sheet fixed structure 231 is arranged in first mesh sheet 232
It is other ipsilateral with second mesh sheet 233.This is the preferred constructive form of mesh sheet fixed structure of the invention, can be distinguished
The two sides of two mesh sheet are fixed respectively, in order to which effectively two mesh sheet fixing cards are set in the card slot on shell,
With reinforce it is affixed, prevent the channelling of magnetic working medium and leakage.
Preferably,
It is additionally provided with binding structure 234 in first mesh sheet 232 and/or the second mesh sheet 233, and/or, the gap
Width be 0.2~1.5mm.Fastening effect, C portion, energy such as Fig. 4 further can be carried out to mesh sheet by binding structure
Affixed effect is enough improved, the channelling of magnetic working medium and leakage between different chamber are prevented, the width in gap is that 0.2~1.5mm can have
Effect guarantees between the heat-blocking action two chambers.
Preferably,
The reticular structure 23 includes at least one rigid web plate 235 with multiple holes, passes through the rigid web plate
235 directly cards are set into the card slot 28.Such as the part B of Fig. 4, it can directly be blocked by rigid web plate and be set into card slot,
The rigid steel plate can be combined use with more than two mesh sheet above-mentioned, and securely card can be carried out to reticular structure and is set
While, guarantee that the magnetic working medium between two chambers is not in leakage and channelling situation, improve fit sealing intensity.
Preferably,
It is described rigidity web plate 235 with a thickness of 0.7~2.5mm.It sets the thickness of the rigidity web plate in above range
It can effectively ensure that the hardness of rigid web plate, can be smoothly inserted into card slot and be able to achieve fastening.The netted knot
Mesh sheet in structure, material includes but is not limited to have plastics, stainless steel, alloy of some strength etc., wherein in option b
Multilayer stainless steel sintering filter screen is preferably used in rigid web plate 235.
It is illustrated in figure 4 the reticular structure schematic diagram, tri- kinds of structures of A, B and C including but not limited in figure；A indicates it
One of mode: there is the double-deck mesh sheet (the first mesh sheet 232 and the second mesh sheet 233), it is fixed by mesh sheet fixed structure 231,
To be preferably inserted into reticular structure card slot 28, the gap with 0.2~1.5mm between two panels mesh sheet, for obstructing adjacent magnetic
Circumferential direction between working medium layer chamber 22 is thermally conductive；B indicates another reticular structure (rigid web plate 235), which has
The thickness of 0.7~2.5mm, and have certain mechanical strength so that not needing mesh sheet fixed structure and being inserted directly into net
Shape structure card slot；Similarly, A mode can be combined with B mode, increase by one group of card slot 28, be directly inserted into two panels rigidity
Web plate 235 realizes double-layer structure, the gap with 0.2~1.5mm between two panels rigidity web plate 235.Scheme C is another net
The schematic diagram of shape structure has the binding structure 234 for fixing the first mesh sheet 232.
Preferably,
The reticular structure is made of heat-barrier material；And/or the cross-sectional shape of the reticular structure 23 be rectangle,
It is round, fan-shaped, trapezoidal, oval or U-shaped；And/or the reticular structure 23 has multiple mesh and the mesh number model of its mesh
It is trapped among between 2-150 and/or the mesh is at least one of round, triangle and quadrangle；And/or in the shell
Buckle 32 is additionally provided on body, around the card slot 28.By the way that reticular structure can be had using heat-barrier material production
Effect ground plays heat-insulated effect between adjacent magnetic working medium layer chamber, effectively mitigates or prevent the thermally conductive of axial direction, into one
Step improves the performance of magnetic regenerator.
The reticular structure can be rectangle, circle, sector, trapezoidal, oval, U-shaped etc., depend primarily on magnetic cold-storing
The cross sectional shape that the axial direction of device is seen.
The mesh sheet of the reticular structure has certain mesh number, and size depends on filling magnetic working medium particle, powder, bits
The mesh number of the particle diameter of the patterns such as shape, its smaller corresponding mesh sheet of the particle diameter of magnetic working medium is more, mesh screen sieve diameter
It is minimum；The mesh sheet, mesh number range is 2~150, and the particle diameter of magnetic working medium is greater than the sieve diameter of mesh sheet；
The reticular structure can be porous plate, and between layers positioned at magnetic working material, hole can be circle, three
The other shapes such as angular, quadrangle, but the particle of magnetic working medium is unable to through hole.
Preferably,
The Curie temperature of magnetic working medium in more than two magnetic working medium layer chambers 22 on along fluid flow direction by
Gradually increased or decrease.Such structure type can effectively guarantee can be heated up step by step in process fluid flow or step by step
Cooling using the sequence arrangement of the magnetic working medium of different Curie temperature, can be improved to the gradually heating of fluid or the effect to cool down
Fruit improves heat transfer effect.
Preferably,
The regenerator includes fluid inlet 26 and fluid outlet 27, and in the fluid inlet 26 and is located at fluid stream
Inlet plenum 24 is additionally provided between the reticular structure 23 of dynamic direction most upstream, the inlet plenum 24 passes through the netted knot
The magnetic working medium layer chamber 22 adjacent with the reticular structure of structure 23 is connected to.
Also by the way that inlet plenum is communicatively arranged in fluid inlet, fluid enters after magnetic cold-storing bed by first filling the present invention
A full cavity enters back into magnetic cold-storing bed, avoids existing fluid and directly enters in magnetic working medium layer chamber from import and gather around
Stifled situation improves the uniformity of fluid flowing.
First embodiment of the invention: following problems are directed to, propose the first embodiment
1. flow uniformity is insufficient.2. for the magnetic of the multilayers magnetic working medium such as graininess, powdered, irregular sheet, bits shape
There is the mixing of magnetic working medium in regenerator, other than part magnetic regenerator is not due to having layer and layer barrier structure, reason also exists
There are gaps between cover board and barrier structure, under the impact of heat exchanging fluid, are easy to happen different magnetic working medium in this clearance flow
It alters, to influence the performance of magnetic regenerator.3. there is axial heat conduction problem in current regenerator system.Known magnetic working medium is (outstanding
It is the material with single order phase transformation) first is that the relatively narrow temperature range that magnetothermal effect occurs, universal at present
Solution be along regenerator packed bed direction (fluid flow direction) by with different Curie temperature magnetic working medium be layered
Design, but exist due to contact area between layers is big and there are more serious axial heat transfer (fluid flowing sides
To), this will lead to temperature across reduction, so that the runnability of magnetic regenerator has a great impact, especially running frequency it is lower,
Flow rate is lower and regenerator packed bed axial length it is lesser under the conditions of influence it is more serious.
FIG. 1 to FIG. 3 indicates first embodiment, at present regenerator used in rotary room-temperature magnetic refrigerator (regenerator)
Body shape mainly has cylinder, the structures such as cuboid, circular ring shape, sector, tiles.The embodiment is based on fan-shaped regenerator
A kind of embodiment.But inventive concept is readily applicable to the regenerator of other shapes.Such as along fluid flow direction cross
Section is rectangle, circle, sector, trapezoidal, oval, U type etc..
As shown in Figure 1, preferably indicate it is a kind of for graininess, the multilayers magnetic work such as powdered, irregular sheet, bits shape
The magnetic regenerator of matter, regenerator are mainly made of upper cover 1, shell 2, reticular structure 23, sealing element (not shown)；It is described
In upper cover 1 there are several to be preferably uniformly distributed in the first threaded hole 11 of edge, the second threaded hole with position and shell 2
21 match, and are used to fasten upper cover 1 and shell 2 with this；The shell 2 includes several magnetic working medium layer chambers 22, distribution magnetic working medium
Two inlet plenums 24 and fluid inlet 26 and fluid outlet 27 in fills unit both sides form；The inlet plenum 24
Setting increase heat exchange stream so that fluid, which enters after magnetic cold-storing bed, enters back into magnetic cold-storing bed by being first full of a cavity
The direct contact area of body and magnetic working medium improves flow uniformity.
The number of the magnetic working medium layer chamber 22 can be two or more.Space where the magnetic working medium layer chamber 22 is to use
Come the magnetic working material of the shapes such as filler particles shape, powdered, irregular sheet, bits shape, heat exchanging fluid (general main component
For water) from fluid inlet 26 exchanging by fine clearance and the magnetic working medium progress heat between magnetic working material is flowed into, from stream
27 outflow of body outlet, to realize refrigeration or heating.Due to being concussion flowing back and forth when the regenerator of magnetic refrigerator works,
So can become outlet at certain moment in fluid inlet 26, fluid outlet 27 becomes entrance.
In the present invention about fluid inlet 26 and fluid outlet 27, it can be interchanged.In the practical fortune of magnetic refrigerator
In row, influence of the trapped fluids to regenerator of the import and export pipeline when in order to mitigate due to flow direction switching, will also tend to using into
Export isolated mode, have that is, regenerator tool is there are four importing and exporting, in a kind of deformation of the present embodiment, fluid inlet
26 can simply be split up into 2, and fluid outlet 27 can be divided into 2 (not shown)s.
Preferably,
This is the structure type of the shell of second embodiment of the present invention, as illustrated in figs. 5-7,
The shell 2 is integrally formed structures, and the side of the shell 2 is provided with multiple openings 30, described to open
Mouthfuls 30 are arranged in a one-to-one correspondence with the reticular structure 23, and the magnetic working medium layer chamber 22 of 23 two sides of the reticular structure can respectively with
30 connection of opening is entered in magnetic working medium layer chamber 22 or by the magnetic working medium layer with filling magnetic working medium from the opening 30
30 discharge magnetic working medium of chamber 22 and the opening.The present invention is provided with more by magnetic regenerator integrated shell design even shell
A threaded hole opening, can greatly avoid fluid leakage, fastening effect be further increased, so that sealing effect tends to most
It is good, and convenient for assembly be readily disassembled.(hollow cavity of the enclosure interior can be connected to by the opening with outside).
Preferably,
Sealing cover 31 is provided at each opening 30, the internal perisporium of the opening 30 is provided with internal screw thread, described
It is provided on the periphery wall of sealing cover 31 external screw thread (column structure), and the sealing cover 31 can connect with 30 screw threads of the opening
It connects.Multiple threaded holes opening is provided with by shell, makes it form screw thread between the external screw thread of sealing cover to match connection, it can
Fluid leakage is greatly avoided, fastening effect is improved, so that sealing effect tends to most preferably, and convenient for assembly is readily disassembled.
Second embodiment of the invention:
In order to solve sealing reliability and easy to disassemble, proposition second embodiment of the present invention: magnetic regenerator integration
Housing design and multiple round thread holes are provided in shell are open, greatly avoided by integrated shell and thread seal
Fluid leakage, and convenient for assembly be readily disassembled.
The difference of second embodiment of the invention and first embodiment is to eliminate 1 structure of upper cover；Eliminate shell
Seal groove 25 on 2 and it is placed on sealing element therein；Eliminate the screw and screw hole for fastening.Shell 2 and lid 1
Integrated design has been carried out, and has opened the opening 30 in several round thread holes in the one or both sides of regenerator；Its purpose exists
It can be designed according to actual needs in the number of assembly magnetic working material and reticular structure 23, the opening 30 of the threaded hole, but
Guarantee that reticular structure 23 can be inserted into the card slot inside shell 2, such as by the opening 30 of threaded hole in the present embodiment
The width of middle reticular structure 23 is less than the diameter of the opening 30 of threaded hole.The corresponding screw thread of the opening 30 of each threaded hole
Be open sealing cover 31.
Fig. 6 is the top view of second embodiment.Since opening 30 is also threaded hole, fluid inlet 26, fluid outlet 27
For threaded hole, but it is with significant difference: multiple openings 30 are feeding ports, that is to say, that magnetic working material is carried out from these mouths
It is packed into regenerator inner cavity, equally before filler, first passes through 30 insertion reticular structure 23 of opening.So as to internal before filler
Chamber volume carries out subregion or layering, to insert the magnetic working material of different Curie temperature.Before completing material, threaded hole is needed
Opening sealing cover 31 (plug) blocks.
As embodiment 1, fluid inlet 26, fluid outlet 27 are the inlet and outlet of heat exchanging fluid, for connecting exterior tube
Screw thread is not necessarily used on road here certainly, can be the connection of the other modes such as welding.Equally, fluid inlet 26, fluid outlet 27
It can be to be divided into four inlet and outlet, which is not described herein again.
The shell 2 of the integrated design in the present embodiment can be made by 3D printing, can also be processed by other
Mode such as welds the design for completing integrated shell 2；
Fig. 7 is Fig. 6 along a sectional view of B-B, is seen in figure to find out with reticular structure card slot 28；The card slot two
Side can have certain protrusion 32, be cooperated by internal card slot 28 with reticular structure 23, and using protrusion 32, avoid
It is mutually blended between the magnetic working medium of different layers.
It is identical described in the reticular structure 23 and first embodiment, it is repeated no more about its specific structure.Second
Embodiment and first embodiment equally have several magnetic working medium layer chambers 22, and similarly, reticular structure 23 is located at two phases
Between adjacent magnetic working medium layer chamber 22 and between inlet plenum 24 and head and the tail end magnetic working medium layer chamber 22；The magnetic working medium layer
Chamber 22 has several, and according to the sequence of Curie temperature, successively axial alignment inserts the magnetic working medium layer chamber 22. to magnetic working medium
Being mutually mixed between the magnetic working medium unit of different Curie temperature is avoided by reticular structure 23.In addition second embodiment
Equally there is fluid inlet 26, fluid outlet 27.
Second embodiment equally has inlet plenum 24, so that fluid enters after magnetic cold-storing bed by first full of one
Cavity enters back into magnetic cold-storing bed, increases the direct contact area of heat exchanging fluid Yu magnetic working medium, improves flow uniformity.
The assembly method of the second embodiment are as follows: first by reticular structure 23, inserted by the opening 30 in round thread hole
Enter integrated shell 2, when constituting a magnetic working medium layer chamber 22 between a reticular structure 23, so that it may pass through round thread hole
Opening 30 insert magnetic working medium, when same mode fills up all or part of magnetic working medium layer chamber 22 used, so that it may successively
It is sealed by the sealing cover 31 that threaded hole is open；
To realize full thread sealing, fluid leakage is avoided, screw and sealing element is eliminated, improves reliability
And it is convenient for assembly to be readily disassembled.
In addition, because there are apertured hidden danger between the sealing cover 31 and reticular structure 23 of threaded hole opening, in order to keep away
Exempt to reveal and blend at the opening 30 in round thread hole between the magnetic working medium in different magnetic working medium layer chambers 22, circle can be added
Shape intermediate structure part (not shown), the diameter of the circle intermediate structure part guarantees can be with round thread hole opening 30
It fitting closely, the side that the circle intermediate structure part matches inside magnetic regenerator with reticular structure 23 has groove,
The shape and structure of the groove can closely be embedded in reticular structure 23 in assembly and go out one exposed in round thread hole opening 30
Side.Make the periphery of reticular structure 23 all fluted mutually embedding in this way, thus avoid magnetic working medium in different magnetic working medium layer chambers 22 it
Between round thread hole opening 30 go out reveal and blending, improve reliability, it is entirely avoided the magnetic working medium of different layers it
Between mutually blend.
Preferably,
This is the structure type of the shell of first embodiment of the invention, as shown in Figs 1-4,
The shell 2 offers the windowing 29 communicated with outside, in the position of the hollow cavity to fill out from the windowing
The working medium that magnetizes enters in magnetic working medium layer chamber or magnetic working medium, and the cold-storage is discharged by the magnetic working medium layer chamber and the windowing
Device further includes that upper cover 1, the upper cover 1 can cover the position for being located at the windowing 29 to close to the windowing 29.Pass through
Windowing on shell can be realized the effect of filler filling and material discharge to magnetic working medium, can be realized and opens by upper cover
Fastening and sealed connection between window guarantee its internal leakproofness and closure, promote the heat transfer effect of heat exchanging fluid.
Preferably,
It is provided with multiple first threaded holes 11 in the upper cover 1, is located at around the windowing 29 on the shell 2 and sets
Multiple second threaded holes 21 are equipped with, second threaded hole 21 is arranged in a one-to-one correspondence with first threaded hole 11, by more
A bolt or screw fasten first threaded hole 11 and second threaded hole 21；And/or it is located at institute on the shell 2
The seal groove 25 for being provided with around windowing 29 and surrounding the windowing 29 is stated, seal member can be set in the seal groove 25.
It can be realized the fastening and sealed connection between upper cover and windowing by the setting of the first and second threaded holes, guarantee in windowing
The closure of the hollow cavity in portion, and the leakproofness to hollow cavity can be further improved by seal groove and seal member.
As shown in figures 2-3, the shell 2 with there is the groove for placing sealing element at 1 cooperation of upper cover, i.e., in figure
Seal groove 25；The upper cover 1 and shell 2 all have corresponding reticular structure card slot 28, the card slot 28 is for placing net
Shape structure 23, as shown in Figure 1, reticular structure is located between two adjacent magnetic working medium layer chambers 22 and is located at cavity and two ends
Between portion's magnetic working medium layer chamber 22；The magnetic working medium layer chamber 22 has several, and magnetic working medium according to Curie temperature sequence according to
Secondary axial alignment inserts the magnetic working medium layer chamber 22；The plugging in fitting of the certain depth of reticular structure 23 and reticular structure card slot
So that the magnetic working medium unit of different Curie temperature is not mutually mixed, and by the mesh sheet of reticular structure by different magnetic works
Matter separates, and reduces the axial heat transfer between different Curie temperature magnetic working medium units, avoid temperature across reduction, improve
The efficiency of magnetic regenerator.
The present invention also provides a kind of magnetic refrigeration apparatus comprising preceding described in any item regenerators.The present invention is by storing
Reticular structure is set, cavity is separated into multiple magnetic working medium layer chambers, and by reticular structure in the inner hollow cavity of cooler
The position setting card slot docked with the inner wall of the hollow cavity, is caught in the card slot for reticular structure in such a way that card is set
In, it can effectively guarantee that there is good fit sealing between adjacent magnetic working medium layer chamber, make adjacent magnetic working medium layer
It will not mutually be altered there is a phenomenon where magnetic working medium mixes between chamber, effectively prevent mutually blending between the magnetic working medium of different layers, effectively
Improve the performance of magnetic regenerator.
Preferably,
The regenerator be it is multiple, multiple regenerators can be connected to each other by connection structure or multiple storages
Cooler is integrally formed.
Preferably,
Multiple regenerators can be spliced to form each other a complete circle configurations in circumferencial direction.
Third embodiment of the present invention is the sector in several described first embodiments or second embodiment
Magnetic regenerator can surround a cyclic annular formation magnetic regenerator component.Third embodiment is indicated as shown in Figure 8.Preferably,
The angle of middle sector magnetic regenerator is if a (wherein a meets 0 ° < a≤180 °, and a can be divided exactly by 360 °), it is clear that sector magnet
The number of regenerator is 360 °/a；The adjacent regenerator 2 can (the first connector 36, second connects by connector fixing piece
Fitting 37) connection, it can also be connected by other structures, such as other types of attachment such as buckle, sliding slot, guide rail, guide groove.And Fig. 1
Equally, it is preferable that fluid inlet 26, the fluid outlet 27 of the shell 2 of magnetic regenerator can be with the first quick couplings 34, second
Quick coupling 35 is connected through a screw thread, and other kinds of connector and type of attachment also can be used.
4th embodiment of the invention is a kind of modification of third embodiment, is integrated annular magnetic regenerator,
It retains internal structure and difference of inlet and outlet interconnecting piece and Fig. 8 in second embodiment and is, the shell 2 of multiple magnetic regenerators
It is linked to be an entirety, can be used as a part and be made.Such benefit is to guarantee to save in the case where second embodiment
Connection structure, so that assembly is simple, part is reduced, and reliability improves.
The invention reside in:
1. cooperating by internal card slot and netted barrier structure, using the barrier of protrusion and groove structure, difference is avoided
It is mutually blended between the magnetic working medium of layer.
2. using netted barrier structure between layers in magnetic regenerator, axial thermal conductivity is alleviated, to improve magnetic
The performance of regenerator.
3. fluid, which enters after magnetic cold-storing bed, enters back into magnetic cold-storing bed by being first full of a cavity, flow uniformity is improved.
4. being provided with multiple round thread holes in the design of magnetic regenerator integrated shell and shell to be open, pass through integrated shell
Body and thread seal greatly avoid fluid leakage, and convenient for assembly are readily disassembled.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
The above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications should also regard
For protection scope of the present invention.
Claims (17)
1. a kind of regenerator for magnetic refrigeration, it is characterised in that: include:
Shell (2) with hollow cavity is provided with more than one netted knot along fluid flow direction in the hollow cavity
Structure (23), the hollow cavity is separated into more than two magnetic working medium layer chambers (22), the different magnetic working medium layer chamber (22)
The different magnetic working medium of middle setting, and the reticular structure (23) can allow heat exchanging fluid by preventing magnetic working medium from passing through.
2. regenerator according to claim 1, it is characterised in that:
And card slot (28) is additionally provided at the position that the inner wall of the hollow cavity connects with the reticular structure (23), to permit
Perhaps the described reticular structure (23) is arranged in wherein.
3. regenerator according to claim 2, it is characterised in that:
The reticular structure (23) includes two layers or more of mesh sheet, described two layers or more of mesh sheet include the first mesh sheet (232) and
Second mesh sheet (233), and there is gap, and the netted knot between first mesh sheet (232) and second mesh sheet (233)
Structure (23) further includes that mesh sheet of the connection setting in first mesh sheet (232) and the same side of second mesh sheet (233) is fixed
Structure (231), by the mesh sheet fixed structure (231) the reticular structure (23) to be inserted into the card slot (28).
4. regenerator according to claim 3, it is characterised in that:
There are two the mesh sheet fixed structures (231), and a mesh sheet fixed structure (231) is arranged in first mesh sheet
(232) it is arranged with the same side of second mesh sheet (233), another described mesh sheet fixed structure (231) in first net
Piece (232) and second mesh sheet (233) it is other ipsilateral.
5. regenerator according to claim 3, it is characterised in that:
Binding structure (234) are additionally provided in first mesh sheet (232) and/or the second mesh sheet (233)；The gap and/or
Width be 0.2~1.5mm.
6. regenerator according to any one of claims 1-5, it is characterised in that:
The reticular structure (23) includes at least one rigid web plate (235) with multiple holes, passes through the rigid web plate
(235) directly card is set into the card slot (28).
7. regenerator according to claim 6, it is characterised in that:
It is described rigidity web plate (235) with a thickness of 0.7~2.5mm.
8. regenerator according to any one of claims 1-5, it is characterised in that:
The reticular structure is made of heat-barrier material；And/or the cross-sectional shape of the reticular structure (23) is rectangle, circle
It is shape, sector, trapezoidal, oval or U-shaped；And/or the reticular structure (23) has multiple mesh and the mesh number model of its mesh
It is trapped among between 2-150 and/or the mesh is at least one of round, triangle and quadrangle；And/or in the shell
Above, it is located at around the card slot (28) and is additionally provided with raised (32).
9. regenerator according to claim 1 to 8, it is characterised in that:
The Curie temperature of magnetic working medium in more than two magnetic working medium layer chambers (22) on along fluid flow direction gradually
It increaseds or decreases.
10. regenerator according to claim 1 to 9, it is characterised in that:
The regenerator includes fluid inlet (26) and fluid outlet (27), and in the fluid inlet (26) and is located at fluid stream
It is additionally provided with inlet plenum (24) between the reticular structure (23) of dynamic direction most upstream, the inlet plenum (24) passes through the net
Shape structure (23) magnetic working medium layer chamber (22) connection adjacent with the reticular structure.
11. regenerator according to claim 1 to 10, it is characterised in that:
The shell (2) is integrally formed structures, and the side of the shell (2) is provided with multiple openings (30), described
Opening (30) is arranged in a one-to-one correspondence with the reticular structure (23), and the magnetic working medium layer chamber (22) of the reticular structure (23) two sides
It can be connected to respectively with the opening (30), to enter in magnetic working medium layer chamber (22) or pass through from the opening (30) filling magnetic working medium
Magnetic working medium is discharged in the magnetic working medium layer chamber (22) and the opening (30).
12. regenerator according to claim 11, it is characterised in that:
It is provided with sealing cover (31) at each opening (30), the internal perisporium of the opening (30) is provided with internal screw thread, institute
It states and is provided with external screw thread on the periphery wall of sealing cover (31), and the sealing cover (31) can be threadedly coupled with the opening (30).
13. regenerator according to claim 1 to 10, it is characterised in that:
The shell (2) offers the windowing (29) communicated with outside, in the position of the hollow cavity to fill out from the windowing
The working medium that magnetizes enters in magnetic working medium layer chamber or magnetic working medium, and the regenerator is discharged by the magnetic working medium layer chamber and the windowing
It further include that upper cover (1), the upper cover (1) can cover the position for being located at the windowing (29) to seal to the windowing (29)
It closes.
14. regenerator according to claim 13, it is characterised in that:
It is provided with multiple first threaded holes (11) on the upper cover (1), is located at around the windowing (29) on the shell (2)
Multiple second threaded holes (21) are provided with, second threaded hole (21) is arranged in a one-to-one correspondence with first threaded hole (11),
First threaded hole (11) and second threaded hole (21) to be fastened by multiple bolts or screw；And/or the shell
It is located at the seal groove (25) for being provided with around the windowing (29) and surrounding the windowing (29), the seal groove on body (2)
(25) seal member can be set in.
15. a kind of magnetic refrigeration apparatus, it is characterised in that:
Including regenerator described in any one of claim 1-14.
16. magnetic refrigeration apparatus according to claim 15, it is characterised in that:
The regenerator be it is multiple, multiple regenerators can be connected to each other by connection structure or multiple regenerators
It is integrally formed.
17. magnetic refrigeration apparatus according to claim 16, it is characterised in that:
Multiple regenerators can be spliced to form each other a complete circle configurations in circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735288.XA CN110375459A (en) | 2019-08-09 | 2019-08-09 | A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735288.XA CN110375459A (en) | 2019-08-09 | 2019-08-09 | A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration |
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| Publication Number | Publication Date |
|---|---|
| CN110375459A true CN110375459A (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735288.XA Pending CN110375459A (en) | 2019-08-09 | 2019-08-09 | A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration |
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| CN (1) | CN110375459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021182441A1 (en) * | 2020-03-13 | 2021-09-16 | ダイキン工業株式会社 | Cooling module using solid refrigerant and cooling system using solid refrigerant |
| CN113551439A (en) * | 2021-07-30 | 2021-10-26 | 珠海格力电器股份有限公司 | Cold accumulator, cold accumulation device and magnetic refrigeration system |
-
2019
- 2019-08-09 CN CN201910735288.XA patent/CN110375459A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021182441A1 (en) * | 2020-03-13 | 2021-09-16 | ダイキン工業株式会社 | Cooling module using solid refrigerant and cooling system using solid refrigerant |
| JP2021148421A (en) * | 2020-03-13 | 2021-09-27 | ダイキン工業株式会社 | Cooling module with solid refrigerant and cooling system with solid refrigerant |
| CN113551439A (en) * | 2021-07-30 | 2021-10-26 | 珠海格力电器股份有限公司 | Cold accumulator, cold accumulation device and magnetic refrigeration system |
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