CN112484334B - A green and environmentally friendly magnetic refrigeration heat exchange device based on magnetocaloric effect - Google Patents
A green and environmentally friendly magnetic refrigeration heat exchange device based on magnetocaloric effect Download PDFInfo
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- CN112484334B CN112484334B CN202011474324.0A CN202011474324A CN112484334B CN 112484334 B CN112484334 B CN 112484334B CN 202011474324 A CN202011474324 A CN 202011474324A CN 112484334 B CN112484334 B CN 112484334B
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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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
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hard Magnetic Materials (AREA)
Abstract
本发明公开的一种基于磁热效应的绿色环保型磁制冷换热设备，包括磁场发生装置、磁工质、换热通道和驱动组件，换热通道划分为多段，分别为吸热段、放热段以及节流段，磁工质于换热通道内，驱动组件用于驱动磁工质在换热通道内循环运动，磁场发生装置用于发生磁场，本发明设计合理，原理简单，提供了一种新式磁制冷换热结构，基于磁热效应实现热量的转移，进而实现制冷或制热功能，本实施例的磁工质采用闭环式循环运动，不易损坏，维护成本低，磁工质运动方向与介质流动方向呈逆向对流，换热效率提高，单位时间的制冷或制热效率提升。
The present invention discloses a green and environmentally friendly magnetic refrigeration heat exchange equipment based on magnetocaloric effect, comprising a magnetic field generating device, a magnetic working fluid, a heat exchange channel and a driving component. The heat exchange channel is divided into multiple sections, namely a heat absorption section, a heat release section and a throttling section. The magnetic working fluid is in the heat exchange channel, the driving component is used to drive the magnetic working fluid to circulate in the heat exchange channel, and the magnetic field generating device is used to generate a magnetic field. The present invention has a reasonable design and a simple principle, and provides a new magnetic refrigeration heat exchange structure, which realizes heat transfer based on the magnetocaloric effect, and further realizes the cooling or heating function. The magnetic working fluid in this embodiment adopts a closed-loop circulation motion, is not easy to be damaged, and has a low maintenance cost. The movement direction of the magnetic working fluid and the flow direction of the medium are countercurrent, the heat exchange efficiency is improved, and the cooling or heating efficiency per unit time is improved.
Description
Technical Field
The invention relates to the technical field of magnetic refrigeration, in particular to a green environment-friendly magnetic refrigeration heat exchange device based on a magnetocaloric effect.
Background
With the increase of global warming, global warming is attracting more and more attention, and environmental protection is also increasingly emphasized. Since 1989, the implementation of the montreal protocol, the freon-based traditional refrigerants, which would destroy the ozone layer, has been progressively disabled due to the greenhouse effect. The novel refrigeration technology with environmental protection and high efficiency is developed rapidly, such as semiconductor refrigeration, magnetic refrigeration, electric refrigeration and the like. The magnetic refrigeration technology is a green technology which uses magnetic materials as working media and utilizes the magnetocaloric effect of the materials to refrigerate, the refrigeration efficiency is 5-10 times of that of the traditional gas refrigeration, the energy can be obviously saved, the entropy density of the solid magnetic refrigeration materials is far higher than that of the gas, the volume of the refrigerator is smaller, the large-amplitude gas compression movement is not needed, the operation is stable and reliable, and more importantly, the technology has no refrigerant such as freon, ammonia and the like and no environmental pollution.
Disclosure of Invention
On the premise of environmental friendliness, the invention develops the environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect.
The specific technical scheme is as follows:
the environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect is characterized by comprising a magnetic field generating device, a magnetic working medium, a heat exchange channel and a driving assembly;
The heat exchange channel is in a closed loop state of end to end connection and is used for circulating the magnetic working medium in the heat exchange channel, and the heat exchange channel can be divided into a plurality of sections according to functions, namely a heat absorption section, a heat release section and 2 throttling sections which are communicated with the two ends of the heat absorption section and the heat release section;
the magnetic working medium is arranged in the heat exchange channel, is in a plurality of numbers, is continuously arranged and circularly moves in the heat exchange channel;
the driving component is arranged on the heat exchange channel and used for driving the magnetic working medium to circularly move in the heat exchange channel;
The magnetic field generating device is used for generating a magnetic field and is arranged outside the heat release section;
The heat absorption section is communicated with a first medium pipeline, a refrigerating medium flows in the first medium pipeline, the heat release section is communicated with a second medium pipeline, and a heat absorption medium flows in the second medium pipeline.
The environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect, wherein the magnetic working medium is a polygonal body suitable for moving in the heat exchange channel.
The environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect, wherein the magnetic working medium is spherical.
According to the environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect, a gap for a refrigerating medium or a heat absorbing medium to circulate is reserved between the edge of the magnetic working medium and the inner wall of the heat absorbing section or the inner wall of the heat releasing section, the edge of the magnetic working medium is matched with the inner wall of the throttling section, and no gap is reserved, namely the section of the magnetic working medium is matched with the section of a channel in the throttling section.
The driving assembly comprises a driving shaft and a driver, one end of the driving shaft extends into the heat exchange channel and is connected with the driving blade, the other end of the driving shaft is located outside the heat exchange channel and is connected with the driver, and the driver drives the driving shaft to rotate so as to control the driving blade to rotate, so that the magnetic working medium circularly moves in the heat exchange channel.
According to the environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect, the flowing direction of the refrigeration medium in the heat absorption section is opposite to the moving direction of the magnetic working medium in the heat absorption section, and the flowing direction of the heat absorption medium in the heat release section is opposite to the moving direction of the magnetic working medium in the heat release section.
The working method of the green environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect is as follows:
(1) Starting the magnetic field generating device and the driving assembly to enable the heat release section to generate an external magnetic field and enable the magnetic working medium to circularly move in the heat exchange channel;
(2) When the magnetic working medium moves to the externally-applied magnetic field, under the action of the externally-applied magnetic field, the magnetic moment order is enhanced, the magnetic entropy is reduced, and heat is released, and at the moment, the heat released by the magnetic working medium is continuously absorbed and taken away by the heat absorbing medium flowing in the heat releasing section;
(3) When the magnetic working medium leaves the open heat section and enters the heat absorption section through the throttling section, the magnetic working medium leaves the external magnetic field at the moment, the magnetic moment order degree is reduced, and the heat is absorbed, and at the moment, the heat of the refrigerating medium flowing in the heat absorption section continuously absorbs and takes away the magnetic working medium;
(4) Along with the circulation movement of the magnetic working medium, the heat of the refrigeration medium is continuously transferred to the magnetic working medium in the heat absorption section, and then is carried to the heat release section by the magnetic working medium, absorbed and taken away by the heat absorption medium flowing in the heat absorption section.
The green environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect is characterized in that a pump and a valve are arranged on the first medium pipeline and the second medium pipeline.
The green environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect is characterized in that a refrigerating device is connected to the first medium pipeline, and a heat radiating device is connected to the second medium pipeline.
The beneficial effects of the invention are as follows:
The invention discloses a green environment-friendly magnetic refrigeration heat exchange device based on a magnetocaloric effect, which comprises a magnetic field generating device, a magnetic working medium, a heat exchange channel and a driving assembly, wherein the heat exchange channel is divided into a plurality of sections, namely a heat absorption section, a heat release section and a throttling section, the magnetic working medium is arranged in the heat exchange channel, the driving assembly is used for driving the magnetic working medium to circularly move in the heat exchange channel, and the magnetic field generating device is used for generating a magnetic field.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a perspective view of the heat exchange channels and drive assembly.
Fig. 3 is a front view of the heat exchange channels and drive assembly.
FIG. 4 is a schematic diagram of the interior of the exothermic stage.
Fig. 5 is a sectional view in the direction A-A in fig. 3.
Fig. 6 is a sectional view in the direction B-B of fig. 3.
Fig. 7 is a schematic diagram of a drive assembly.
Detailed Description
In order to make the technical scheme of the invention clearer and more definite, the invention is further described below by combining the embodiment, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention.
Example 1
The environment-friendly magnetic refrigeration heat exchange equipment based on the magnetocaloric effect is characterized by comprising a magnetic field generating device 1, a magnetic working medium 2, a heat exchange channel 3 and a driving component 4;
the heat exchange channel 3 is in a closed loop state of end to end connection and is used for circulating the magnetic working medium 2 in the heat exchange channel, and the heat exchange channel can be divided into a plurality of sections according to functions, namely a heat absorption section 31, a heat release section 32 and 2 throttling sections 33 which are communicated with the two ends of the heat absorption section 31 and the heat release section 32;
the magnetic working medium 2 is arranged in the heat exchange channel 3, is a plurality of magnetic working mediums and is continuously arranged and circularly moves in the heat exchange channel 3;
the driving component 4 is arranged on the heat exchange channel 3 and is used for driving the magnetic working medium 2 to circularly move in the heat exchange channel 3;
the magnetic field generating device 1 is used for generating a magnetic field and is arranged outside the heat release section 32;
The heat absorption section 31 is communicated with a first medium pipeline 5, a refrigerating medium flows in the first medium pipeline 5, the heat release section 32 is communicated with a second medium pipeline 6, and a heat absorption medium flows in the second medium pipeline 6;
Wherein the magnetic working medium 2 is a polygonal body suitable for moving in the heat exchange channel 3, or the magnetic working medium 2 is spherical;
taking spherical magnetic working medium 2 as an example;
the edge of the magnetic working medium 2 is matched with the inner wall of the throttling section 33, and no gap is reserved, namely, the section of the magnetic working medium 2 is matched with the section of a channel in the throttling section 33, so that the heat absorption section and the heat release section are not communicated;
the driving assembly 4 comprises a driving shaft 41 and a driver 42, one end of the driving shaft 41 extends into the heat exchange channel 3 and is connected with driving blades, the other end of the driving shaft is positioned outside the heat exchange channel 3 and is connected with the driver 42, and the driver 42 drives the driving shaft 41 to rotate so as to control the driving blades to rotate 43, so that the magnetic working medium 2 circularly moves in the heat exchange channel 3;
The flow direction of the refrigerating medium in the heat absorption section 31 is opposite to the movement direction of the magnetic working medium 2 in the heat absorption section 31, and the flow direction of the heat absorption medium in the heat release section 32 is opposite to the movement direction of the magnetic working medium 2 in the heat release section 32;
Simultaneously, the first medium pipeline is connected with a refrigerating device which carries out refrigeration through the refrigerating medium flowing in the first medium pipeline, and the second medium pipeline is connected with a heat radiating device which carries out heating through the heat absorbing medium flowing in the second medium pipeline or radiates heat of the heat absorbing medium in the second medium pipeline so as to be convenient for circulation heat absorption;
The embodiment discloses a green magnetism refrigeration heat transfer equipment based on magnetocaloric effect, provides a new-type magnetism refrigeration heat transfer structure, realizes heat transfer based on magnetocaloric effect, and then realizes refrigeration or heating function, and the magnetic working medium of this embodiment adopts closed loop type circulation motion, and is not fragile, and the maintenance cost is low, and the magnetic working medium direction of motion is reverse convection with the medium flow direction, and heat exchange efficiency improves, refrigeration or heating efficiency in unit time promotes.
Example two
The working method of the environment-friendly magnetic refrigeration heat exchange device based on the magnetocaloric effect is as follows:
(1) Starting the magnetic field generating device and the driving assembly to enable the heat release section to generate an external magnetic field and enable the magnetic working medium to circularly move in the heat exchange channel;
(2) When the magnetic working medium moves to the externally-applied magnetic field, under the action of the externally-applied magnetic field, the magnetic moment order is enhanced, the magnetic entropy is reduced, and heat is released, and at the moment, the heat released by the magnetic working medium is continuously absorbed and taken away by the heat absorbing medium flowing in the heat releasing section;
(3) When the magnetic working medium leaves the open heat section and enters the heat absorption section through the throttling section, the magnetic working medium leaves the external magnetic field at the moment, the magnetic moment order degree is reduced, and the heat is absorbed, and at the moment, the heat of the refrigerating medium flowing in the heat absorption section continuously absorbs and takes away the magnetic working medium;
(4) Along with the circulating movement of the magnetic working medium, the heat of the refrigeration medium is continuously transferred to the magnetic working medium in the heat absorption section, and then is carried to the heat release section by the magnetic working medium, and is absorbed and taken away by the heat absorption medium flowing in the heat absorption section;
When the magnetic medium is used for heating, the second medium pipeline communicated with the heat release section is introduced into the room, and the heat emitted by the magnetic medium is transferred into the room; when the heat absorption device is used for refrigerating, the first medium pipeline communicated with the heat absorption section is led into a room, the heat of the refrigerating medium continuously absorbs and takes away the magnetic working medium, and the indoor heat is continuously discharged.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011474324.0A CN112484334B (en) | 2020-12-15 | 2020-12-15 | A green and environmentally friendly magnetic refrigeration heat exchange device based on magnetocaloric effect |
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| CN202011474324.0A CN112484334B (en) | 2020-12-15 | 2020-12-15 | A green and environmentally friendly magnetic refrigeration heat exchange device based on magnetocaloric effect |
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| CN112484334A CN112484334A (en) | 2021-03-12 |
| CN112484334B true CN112484334B (en) | 2025-03-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU805027A1 (en) * | 1979-03-23 | 1981-02-15 | Liventsov Viktor M | Magnetic thermocompressor |
| CN214065350U (en) * | 2020-12-15 | 2021-08-27 | 上海松寒汽车空调有限公司 | Green type magnetic refrigeration heat transfer equipment based on magnetic heat effect |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107935A (en) * | 1977-03-10 | 1978-08-22 | The United States Of America As Represented By The United States Department Of Energy | High temperature refrigerator |
| WO2001086218A2 (en) * | 2000-05-05 | 2001-11-15 | University Of Victoria Innovation And Development Corporation | Apparatus and methods for cooling and liquefying a fluid using magnetic refrigeration |
| CN100464134C (en) * | 2006-01-17 | 2009-02-25 | 南京大学 | Magnetic refrigeration method and magnetic refrigeration device using outer loop cold storage |
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2020
- 2020-12-15 CN CN202011474324.0A patent/CN112484334B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU805027A1 (en) * | 1979-03-23 | 1981-02-15 | Liventsov Viktor M | Magnetic thermocompressor |
| CN214065350U (en) * | 2020-12-15 | 2021-08-27 | 上海松寒汽车空调有限公司 | Green type magnetic refrigeration heat transfer equipment based on magnetic heat effect |
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