CN109323481A - A kind of cold-storage bed and the magnetic refrigerator with it - Google Patents
A kind of cold-storage bed and the magnetic refrigerator with it Download PDFInfo
- Publication number
- CN109323481A CN109323481A CN201811227065.4A CN201811227065A CN109323481A CN 109323481 A CN109323481 A CN 109323481A CN 201811227065 A CN201811227065 A CN 201811227065A CN 109323481 A CN109323481 A CN 109323481A
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- Prior art keywords
- cold
- storage bed
- magnetic
- working medium
- fluid
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Classifications
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of cold-storage bed and with its magnetic refrigerator.The cold-storage bed includes cold-storage bed body, filter screen is provided in cold-storage bed body, graininess magnetic working medium is equipped between adjacent head net, the side of cold-storage bed body is provided with import, the other side is provided with outlet, and fluid is flowed into from cold-storage bed import, exports and flows out from cold-storage bed, the top and/or lower part of cold-storage bed body are controlled to have magnetic or do not have magnetism, and graininess magnetic working medium has the characteristic in unfilled space.The top of cold-storage bed body is provided with upper cover, and the lower part of cold-storage bed body is provided with bottom cover, and cold-storage bed body, upper cover and bottom cover enclose jointly is set as a sealing space, and upper cover and bottom cover are controlled to have magnetic or not have magnetic.The present invention can either make particle type magnetic working medium sufficiently exchange heat with fluid, but not will cause opening of sieve blocking or magnetic working medium blocking fluid the problem of, be more capable of providing a straightway channel give fluid flowing, improve fluid flowing and heat transfer effect.
Description
Technical field
The invention belongs to greenhouse magnetic refrigeration technology fields, and in particular to a kind of cold-storage bed and the magnetic refrigerator with it.
Background technique
Magnetic Refrigeration Technique is a kind of New Refrigerating technology based on magnetothermal effect, and magnetothermal effect refers to magneto-caloric material in magnetic
The physical phenomenon of heat release or heat absorption when field enhancing or decrease.When magnetic field adds magnetic to magneto-caloric material, magneto-caloric material magnetic entropy is lower, and puts
Heat out；When removing magnetic field, magneto-caloric material magnetic entropy is got higher, and absorbs heat.Magnetic refrigeration is exactly can be with the phenomenon that utilizing magnetothermal effect
Realize the purpose of refrigeration.
According to the development of magnetic refrigerator machine, state type, reciprocating and rotary can be divided into its motion mode.State type
The magnet and working medium bed of magnetic of magnetic refrigerator be it is static, no movement mechanism makes systematic comparison simple, but due to state type
Magnetic field just needs bigger winding coil using electromagnet, to the magnetic field for generating high-strength so that refrigeration machine volume compared with
To be huge, in addition the heat dissipation of winding is also to need additional cooling device, so that state type magnetic refrigerator can not move towards to be commercialized.
Shuttle type magnetic refrigerator is in contrast relatively simple for structure, it is only necessary to which working medium bed of magnetic and magnet relative rectilinear move back and forth, with this
It realizes plus the effect of magnetic and degaussing, flow path is also fairly simple, although this mode is easily realized, running frequency is low, refrigeration effect
Rate is not high.
Rotary type magnetic refrigerating device is because its is compact-sized, running frequency is high, good refrigeration effect has formed the emphasis studied.
Critical component of the cold-storage bed (working medium bed of magnetic) as room-temperature magnetic refrigerator, its main function are that magnetic working medium is encapsulated
In capsule, heat-transfer fluid is flowed out from outlet again after entering capsule and the heat exchange of magnetic working medium, for shuttle type magnetic refrigerator, cold-storage bed
Generally cuboid or cylindrical body, such as patent CN 104457017A；For rotary type magnetic refrigerating device, cold-storage bed is usually ring
Body or cylindrical body, such as patent CN 101118103A and CN 101788207A.Magnetic working medium pattern is main in cold-storage bed at present
It is divided into perforated plate, parallel-plate, threadiness and particles filled bed.
Using particles filled bed, magnetic working medium and fluid heat transfer area can be made bigger, but it is particles filled in cold-storage bed
It is easy to be carried away by the flow, it is therefore necessary to increase filter structure.After increasing filter structure, sieve meshes must use diameter ratio
Small, bigger than the fluid molecule diameter structure type of grain just can guarantee that fluid can cannot be by (such as Fig. 1) by particle.This
In the case of kind, it is easy to the via hole on particles plug strainer occur, instead resulting in fluid resistance becomes especially big, and fluid circulates not
Smooth, exchange heat the problem of being not enough.
Summary of the invention
The technical problem to be solved by the present invention is particle plug-hole causes fluid resistance big on 1, particles filled formula cold-storage bed
The problem of；2, stop fluid in particles filled formula cold-storage bed endoparticle, fluid can not form a smooth runner, and cause to flow
Body resistance is big, or the problem of cause fluid that can not circulate.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme:
The present invention provides a kind of cold-storage bed, including cold-storage bed body, is provided with several filter screens, adjacent head in cold-storage bed body
Space between net is provided with graininess magnetic working medium, and the side of cold-storage bed body is provided with cold-storage bed import, and the other side is provided with storage
Cold bed outlet, fluid are flowed into from cold-storage bed import, are exported and are flowed out from cold-storage bed, the top and/or lower part of the cold-storage bed body can
It is controlled as having magnetic or does not have magnetism, the graininess magnetic working medium has the characteristic in unfilled space.
Further, the top of the cold-storage bed body is provided with upper cover, and the lower part of the cold-storage bed body is provided with bottom cover,
The cold-storage bed body, upper cover and bottom cover enclose jointly is set as a sealing space, and the upper cover and bottom cover are controlled to have magnetism
Or do not have magnetism.
Further, the height of the cold-storage bed import is higher than the height of cold-storage bed outlet.
Further, the filter screen have via hole, the particle of the aperture ratio graininess magnetic working medium of the via hole it is small and
It is bigger than fluid molecule diameter.
Further, the upper cover and bottom cover are the electromagnet structure that can control its electromagnetically on-off.
Further, when upper cover and bottom cover do not have magnetism, the graininess magnetic working medium is in unordered occupied state.
Further, when fluid needs to fill cold-storage bed, bottom cover has magnetism, and graininess magnetic working medium is attracted to bottom
Portion is formed close to the channel of upper cover between the import of cold-storage bed and the outlet of cold-storage bed.
Further, when the fluid in cold-storage bed needs to be discharged, upper cover has magnetism, and graininess magnetic working medium is attracted on
At upper cover, the channel of bottom cover is formed close between the import of cold-storage bed and the outlet of cold-storage bed.
The present invention also provides a kind of magnetic refrigerators, including above-mentioned cold-storage bed.
The present invention has following beneficial effect:
Cold-storage bed of the present invention, can either make particle type magnetic working medium sufficiently exchange heat with fluid, and not will cause opening of sieve blocking
Or magnetic working medium blocking fluid the problem of, be more capable of providing a straightway channel give fluid flowing, improve fluid flowing and
Heat transfer effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing particles filled formula cold-storage bed.
Fig. 2 is the detonation configuration figure of cold-storage bed of the present invention.
Fig. 3 is the cross-sectional view of cold-storage bed of the present invention.
Fig. 4 is the state diagram that fluid pours into cold-storage bed.
Fig. 5 is the cold-storage bed state diagram added, under demagnetizing state.
Cold-storage bed state diagram when Fig. 6 is fluid discharge.
Marked in the figure: 1- cold-storage bed；11- cold-storage bed import；The outlet of 12- cold-storage bed；2- filter screen；3- graininess magnetic work
Matter；4- upper cover；5- bottom cover.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
In order to solve the problems, such as that it is unsmooth that graininess magnetic working medium plug-hole causes fluid to circulate, the present invention provides a kind of cold-storage bed,
Including cold-storage bed body, several filter screens are provided in cold-storage bed body, the space between adjacent head net is provided with graininess magnetic work
Matter, the side of cold-storage bed body are provided with cold-storage bed import, and the other side is provided with the outlet of cold-storage bed, and fluid is from cold-storage bed inlet flow
Enter, export and flow out from cold-storage bed, the top and/or lower part of the cold-storage bed body are controlled to have magnetism or do not have magnetic
Property, the graininess magnetic working medium has the characteristic in unfilled space.
Using cold-storage bed of the present invention, fluid can either be made sufficiently to exchange heat with graininess magnetic working medium, and fluid circulation can be made suitable
Freely, fluid resistance is greatly reduced, realizes high efficient heat exchanging and high efficiency flow.
Cold-storage bed of the invention can be applied in magnetic refrigerator.
Embodiment one
The present embodiment provides a kind of cold-storage bed as shown in Figures 2 and 3, including cold-storage bed body 1, it is placed in cold-storage bed body 1
Filter screen 2, graininess magnetic working medium 3 are placed in the space between adjacent head net 2.The side of cold-storage bed body 1 is provided with cold-storage
Bed import 11, the other side are provided with cold-storage bed outlet 12, and fluid is flowed into from cold-storage bed import 11, flow out from cold-storage bed outlet 12,
The upper and lower part of the cold-storage bed body 1 is controlled to have magnetic or does not have magnetism, and the graininess magnetic working medium 3 has
The characteristic in unfilled space.
In order to make the upper and lower part of cold-storage bed body 1 be controlled to have magnetic or not have magnetism, the present invention is used
A kind of preferred structure, the i.e. top of cold-storage bed body 1 are arranged upper cover 4, and the lower part of cold-storage bed body 1 is arranged bottom cover 5, cold-storage bed body 1, on
Lid 4 and bottom cover 5 enclose jointly is set as a sealing space, and upper cover 4 and bottom cover 5 are controlled to have magnetic or not have magnetic.Make
To be a kind of preferred, the upper cover 4 and bottom cover 5 can be electromagnet structure, can control the on-off of electromagnet structure electromagnetically.
For the ease of flowing of the fluid in cold-storage bed, the height of the cold-storage bed import 11 is exported higher than the cold-storage bed
12 height.
In order to guarantee that fluid can be by filter screen, and magnetic working medium cannot pass through, the hole of the via hole on the filter screen 2
Diameter is smaller and bigger than fluid molecule diameter than the particle of graininess magnetic working medium 3.
The specific work process of cold-storage bed of the present invention is as described below.
Fig. 3 is cold-storage bed cross-sectional view of the present invention, and the magnetic working medium is not filled up to each space, it is shown in figure only
It is expressed as the characteristic that magnetic working medium has unfilled space, actually when upper bottom cover is without magnetism, magnetic working medium is in unordered filling
State.
The major advantage of cold-storage bed of the invention is that the movement of inner magnet working medium can be controlled, and magnetic working medium is avoided to be in nothing
Sequence motion state, and Fluid pressure direction is that import flow to outlet, if magnetic working medium is in the state of complete free disordered motion
Under, then and its it is easy to appear the state in the hole that magnetic working medium blocks on filter screen, fluid is caused to circulate the unsmooth or state that results in blockage.
Therefore, in the movement that can control magnetic working medium, that is, it can avoid the appearance of the above problem, distance controlling mode is as described below.
As Fig. 4 has bottom cover 5 electromagnetically, magnetic working medium is attracted to bottom at this time when fluid needs to fill cold-storage bed
Portion, fluid can form straightway channel together, channel as shown by the arrows in figure 4 between import and outlet.And
And after fluid fills cold-storage bed, fluid can be completely penetrated by inside magnetic working medium under the effect of gravity.
Such as Fig. 5, when cold-storage bed, which is in, adds magnetic or degaussing, upper cover 4 and bottom cover 5 are in nonmagnetic state, at this time magnetic working medium
In disordered motion state, since magnetic working medium is in freely without constraint state under such state, enable it with fluid with preferably
Contact, makes fluid obtain sufficient heat with magnetic working medium and exchanges, and improves heat exchanger effectiveness.
Such as Fig. 6, adds magnetic or degaussing when cold-storage bed completes, when needing for the fluid in cold-storage bed to be discharged, there is upper cover 4
Magnetism inhales magnetic working medium above upper cover, and can also utilize the effect of gravity, enables the fluid in cold-storage bed abundant
Discharge, reduce heat stagnation (because plus fluid fluid can turn cold after heating or degaussing after magnetic, by adding the fluid of magnetic or degaussing to answer
When cold-storage bed is discharged as much as possible, exchanges heat, should not stay in cold-storage bed, the heat stagnation is to remain in cold-storage bed
Interior heat or cooling capacity).Due to the effect of gravity, fluid is fallen from magnetic working medium, and since magnetic working medium has been sucked up top
Portion makes cold-storage bed bottom form straightway channel, cold fluid as indicated by the arrows in fig. 6, therefore in cold-storage bed or
Hot fluid can discharge as soon as possible.
The present invention really solves the problems, such as magnetic working medium plug-hole, provides straightway by the movement of control magnetic working medium
Fluid flowing passage keeps fluid circulating resistance in cold-storage bed small, and can effectively reduce heat stagnation.Solves graininess magnetic
The fluid of working medium cold-storage bed flows or the bottleneck problem of heat exchange.
In conclusion the upper cover and bottom cover of cold-storage bed of the present invention have the object or structure that can attract magnetic working medium, and
The attraction of this object or structure can be controlled.Magnetic working medium non-100% fills up cold-storage bed, the space of a part is left, by upper
The magnetic control of bottom cover (electromagnet), magnetic working medium can be moved upwardly or downwardly in cold-storage bed by magnetism, unfilled
Space is the smooth flow path for forming no particle blocking.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention.It is 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.
Claims (9)
1. a kind of cold-storage bed, it is characterised in that: including cold-storage bed body (1), several filter screens (2) are provided in cold-storage bed body (1),
Space between adjacent head net (2) is provided with graininess magnetic working medium (3), the side of cold-storage bed body (1) be provided with cold-storage bed into
Mouth (11), the other side are provided with cold-storage bed outlet (12), and fluid is flowed into from cold-storage bed import (11), flow from cold-storage bed outlet (12)
Out, the top and/or lower part of the cold-storage bed body (1) are controlled to have magnetism or do not have magnetism, the graininess magnetic
Working medium (3) has the characteristic in unfilled space.
2. a kind of cold-storage bed according to claim 1, it is characterised in that: the top of the cold-storage bed body (1) is provided with
It covers (4), the lower part of the cold-storage bed body (1) is provided with bottom cover (5), and the cold-storage bed body (1), upper cover (4) and bottom cover (5) are common
It encloses and is set as a sealing space, the upper cover (4) and bottom cover (5) are controlled to have magnetic or not have magnetic.
3. a kind of cold-storage bed according to claim 1, it is characterised in that: the height of the cold-storage bed import (11) is higher than institute
State the height of cold-storage bed outlet (12).
4. a kind of cold-storage bed according to claim 1, it is characterised in that: the filter screen (2) has via hole, the via hole
Aperture ratio graininess magnetic working medium (3) particle it is small and bigger than fluid molecule diameter.
5. a kind of cold-storage bed according to claim 1, it is characterised in that: the upper cover (4) and bottom cover (5) are that can control
The electromagnet structure of its electromagnetically on-off.
6. a kind of cold-storage bed according to claim 1, it is characterised in that: when upper cover (4) and bottom cover (5) do not have magnetism,
The graininess magnetic working medium (3) is in unordered occupied state.
7. a kind of cold-storage bed according to claim 1, it is characterised in that: when fluid needs to fill cold-storage bed, bottom cover (5)
With magnetism, graininess magnetic working medium (3) is attracted to bottom, is formed between cold-storage bed import (11) and cold-storage bed outlet (12)
Close to the channel of upper cover (4).
8. according to a kind of cold-storage bed described in claim 1, it is characterised in that: when the fluid in cold-storage bed needs to be discharged, upper cover
(4) there is magnetism, graininess magnetic working medium (3) is attracted at upper cover, shape between cold-storage bed import (11) and cold-storage bed outlet (12)
At the channel close to bottom cover (5).
9. a kind of magnetic refrigerator, it is characterised in that: including cold-storage bed described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227065.4A CN109323481A (en) | 2018-10-22 | 2018-10-22 | A kind of cold-storage bed and the magnetic refrigerator with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227065.4A CN109323481A (en) | 2018-10-22 | 2018-10-22 | A kind of cold-storage bed and the magnetic refrigerator with it |
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| Publication Number | Publication Date |
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| CN109323481A true CN109323481A (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811227065.4A Pending CN109323481A (en) | 2018-10-22 | 2018-10-22 | A kind of cold-storage bed and the magnetic refrigerator with it |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375459A (en) * | 2019-08-09 | 2019-10-25 | 珠海格力电器股份有限公司 | A kind of regenerator and magnetic refrigeration apparatus for magnetic refrigeration |
| CN110657603A (en) * | 2019-10-30 | 2020-01-07 | 中国长江三峡集团有限公司 | Magnetic refrigeration heat exchanger and refrigeration and heating system and method |
| CN112728805A (en) * | 2020-12-28 | 2021-04-30 | 珠海格力电器股份有限公司 | Magnetic regenerator and manufacturing method thereof, magnetic working medium bed and magnetic refrigerating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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