CN111503936B - Piston type continuous magnetic heat exchange device - Google Patents
Piston type continuous magnetic heat exchange device Download PDFInfo
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- CN111503936B CN111503936B CN202010358311.0A CN202010358311A CN111503936B CN 111503936 B CN111503936 B CN 111503936B CN 202010358311 A CN202010358311 A CN 202010358311A CN 111503936 B CN111503936 B CN 111503936B
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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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- 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)
- Electromagnetic Pumps, Or The Like (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to the technical field of solid heat exchange, in particular to a piston type continuous magnetic heat exchange device which comprises a power supply and a sealed cylinder barrel, wherein a magnetic working medium is fixedly arranged on the inner side wall of the cylinder barrel in a surrounding manner, the inside of the cylinder barrel is divided into a cold fluid cavity and a hot fluid cavity by the magnetic working medium, and heat exchange fluid is arranged in the cylinder barrel; the magnetic working medium is provided with a piston cavity communicated with the cold fluid cavity and the hot fluid cavity, a magnet capable of sliding along the piston cavity is arranged in the piston cavity, the magnet is electrically connected with a power supply, and the magnetic working medium is provided with a connecting hole communicated with the cold fluid cavity and the hot fluid cavity; and the driving device is used for driving the magnet to reciprocate along the piston cavity. By adopting the invention, continuous refrigeration and heating can be realized, the heat exchange efficiency is increased, and the popularization is convenient.
Description
Technical Field
The invention relates to the technical field of solid heat exchange, in particular to a piston type continuous magnetic heat exchange device.
Background
The solid refrigeration has the advantages of environmental protection, high efficiency and the like, and is a refrigeration mode with wide application prospect. The magnetic refrigeration is one of solid refrigeration methods, the method realizes heat transfer by utilizing the characteristic that the temperature of a magnetic material is increased when magnetism is added and is reduced when magnetism is removed, and the method is an efficient and environment-friendly refrigeration method. Typically a complete magnetic refrigeration cycle comprises two processes: cold fluid in the magnetism-added cold end heat exchanger enters the porous magnetic working medium to take away heat in the porous magnetic working medium, and then the heat is dissipated by the heat exchanger at the hot end; after heat dissipation in the demagnetization-hot end heat exchanger, hot fluid enters the porous magnetic working medium, is cooled and then enters the cold end heat exchanger for refrigeration.
The existing magnetic working medium refrigerating device mainly has two types of linear reciprocating type and rotary type, and although a small number of refrigerating device prototypes are produced, the problems of discontinuous refrigeration, residual reverse fluid in a magnetic medium and the like exist, so that the application of the refrigerating mode is limited.
Disclosure of Invention
The invention aims to provide a piston type continuous magnetic heat exchange device which can realize continuous refrigeration and heating, increases the heat exchange efficiency and is convenient to popularize.
The embodiment of the invention is realized by the following steps:
a piston type continuous magnetic heat exchange device comprises a power supply and a sealed cylinder barrel, wherein a magnetic working medium is fixedly arranged around the inner side wall of the cylinder barrel, the inside of the cylinder barrel is divided into a cold fluid cavity and a hot fluid cavity by the magnetic working medium, and heat exchange fluid is arranged in the cylinder barrel; the magnetic working medium is provided with a piston cavity communicated with the cold fluid cavity and the hot fluid cavity, a magnet capable of sliding along the piston cavity is arranged in the piston cavity, the magnet is electrically connected with a power supply, and the magnetic working medium is provided with a connecting hole communicated with the cold fluid cavity and the hot fluid cavity; and the driving device is used for driving the magnet to reciprocate along the piston cavity.
Further, in some embodiments of the present invention, a cold end heat exchanger is disposed in the cold fluid chamber, the cold end heat exchanger is provided with a first inlet end and a first outlet end, and the first inlet end and the first outlet end are disposed outside the cylinder; the hot end heat exchanger is arranged in the hot fluid cavity and provided with a second inlet end and a second outlet end, and the second inlet end and the second outlet end are arranged outside the cylinder barrel.
Further, in some embodiments of the present invention, the magnet includes an upper magnet, a middle magnet and a lower magnet connected in sequence, and the upper magnet, the middle magnet and the lower magnet are electrically connected to a power supply, respectively.
Further, in some embodiments of the present invention, the driving device includes a connecting rod, a crankshaft, and a prime mover for driving the crankshaft to rotate, the crankshaft is provided with a crank, one end of the connecting rod is connected to the magnet, and the other end of the connecting rod is movably connected to the crank.
Further, in some embodiments of the present invention, the prime mover is an electric motor.
Further, in some embodiments of the present invention, a gap is provided between the magnetic medium and the magnet.
Further, in some embodiments of the present invention, the outer surface of the magnetic medium is provided with a thermal insulation layer.
Further, in some embodiments of the present invention, the first inlet end is provided with a cold end transfer pump, and the second inlet end is provided with a hot end transfer pump.
Further, in some embodiments of the present invention, the cold-side heat exchanger and the hot-side heat exchanger are both S-shaped.
Further, in some embodiments of the present invention, the piston chamber is cylindrical in shape.
The embodiment of the invention at least has the following advantages or beneficial effects:
the embodiment of the invention provides a piston type continuous magnetic heat exchange device, which comprises a power supply and a sealed cylinder barrel, wherein a magnetic working medium is fixedly arranged around the inner side wall of the cylinder barrel, the magnetic working medium divides the interior of the cylinder barrel into a cold fluid cavity and a hot fluid cavity, and heat exchange fluid is arranged in the cylinder barrel; the magnetic working medium is provided with a piston cavity communicated with the cold fluid cavity and the hot fluid cavity, a magnet capable of sliding along the piston cavity is arranged in the piston cavity, the magnet is electrically connected with a power supply, and the magnetic working medium is provided with a connecting hole communicated with the cold fluid cavity and the hot fluid cavity; and the driving device is used for driving the magnet to reciprocate along the piston cavity.
The working principle is as follows: the power supply energizes the magnet, the magnet generates magnetism after being energized, meanwhile, the magnetic working medium starts to be magnetized, and the temperature of the magnetic working medium rises; the driving device drives the magnet to move upwards along the piston cavity, the magnet extrudes the heat exchange fluid in the cold fluid cavity, and the heat exchange fluid enters the hot fluid cavity from the connecting hole; because the temperature of the magnetic working medium is raised, the heat generated by the magnetic working medium is taken away by the heat exchange fluid passing through the magnetic working medium, so that the temperature of the heat exchange fluid entering the hot fluid cavity is raised, the temperature of the hot fluid cavity is raised, the heating process is realized, the heat generated in the process is taken away by the heating space which needs to be heated from the outside, the hot fluid cavity is changed into normal temperature until the magnet moves to the highest position, the heating process is completed, and then the power supply is cut off.
After the power supply is cut off, the magnetism of the magnet disappears, meanwhile, the magnetic working medium is demagnetized, and the temperature of the magnetic working medium is reduced; the driving device drives the magnet to move downwards along the piston cavity, the magnet extrudes the heat exchange fluid in the hot fluid cavity, and the heat exchange fluid enters the cold fluid cavity from the connecting hole; because the temperature of the magnetic working medium is reduced, the temperature of the heat exchange fluid which passes through the magnetic working medium and then enters the cold fluid cavity is reduced, the temperature of the cold fluid cavity is reduced, the refrigeration process is realized, the cold quantity generated in the process is taken away by the refrigeration space which needs to be refrigerated outside, the cold fluid cavity is changed into normal temperature until the magnet moves to the lowest position, the refrigeration process is completed, then the power supply is switched on, the heating process is repeated, the refrigeration and the heating are realized through the reciprocating circulation, the heat exchange efficiency is increased, and the popularization is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a partial cross-sectional view of a heat exchange device provided in an embodiment of the present invention;
fig. 2 is a schematic cycle diagram of a cooling and heating process of a heat exchange device according to an embodiment of the present invention;
FIG. 3 is a top view of a heat exchange device according to an embodiment of the present invention;
fig. 4 is a bottom view of a heat exchange device according to an embodiment of the present invention.
An icon: 1-cylinder barrel, 2-piston cavity, 3-magnet, 4-magnetic working medium, 5-cold fluid cavity, 6-hot fluid cavity, 7-cold end heat exchanger, 8-hot end heat exchanger, 9-connecting hole, 10-connecting rod, 11-cold end delivery pump, 12-hot end delivery pump, 13-crank, 14-first inlet end, 15-first outlet end, 16-second inlet end, 17-second outlet end, 18-crank shaft, 19-upper magnet, 20-middle magnet, 21-lower magnet and 22-prime motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be broadly construed and interpreted as including, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
Referring to fig. 1 and fig. 2, fig. 1 is a partial sectional view of a heat exchange device according to an embodiment of the present invention; fig. 2 is a schematic cycle diagram of a cooling and heating process of a heat exchange device according to an embodiment of the present invention.
The solid refrigeration has the advantages of environmental protection, high efficiency and the like, and is a refrigeration mode with wide application prospect. The magnetic refrigeration is one of solid refrigeration methods, the method realizes heat transfer by utilizing the characteristic that the temperature of a magnetic material is increased when magnetism is added and is reduced when magnetism is removed, and the method is an efficient and environment-friendly refrigeration method. And magnetic refrigeration commonly uses magnetic medium 4, and magnetic medium 4 is magnetic refrigeration working medium, and magnetic refrigeration working medium is solid material, and its entropy density is greater than gas far away, consequently changes to accomplish the miniaturization, and the structure can be compacter.
The embodiment provides a piston type continuous magnetic heat exchange device which comprises a power supply and a sealed cylinder barrel 1, wherein a magnetic working medium 4 is fixedly arranged on the inner side wall of the cylinder barrel 1 in a surrounding manner, the magnetic working medium 4 divides the interior of the cylinder barrel 1 into a cold fluid cavity 5 and a hot fluid cavity 6, and heat exchange fluid is arranged in the cylinder barrel 1; the magnetic working medium 4 is provided with a piston cavity 2 communicated with a cold fluid cavity 5 and a hot fluid cavity 6, a magnet 3 capable of sliding along the piston cavity 2 is arranged in the piston cavity 2, the magnet 3 is electrically connected with a power supply, and the magnetic working medium 4 is provided with a connecting hole 9 communicated with the cold fluid cavity 5 and the hot fluid cavity 6; drive means for driving the magnet 3 to reciprocate along the piston chamber 2 are also included.
The working principle is as follows: the power supply energizes the magnet 3, the magnet 3 generates magnetism after being energized, meanwhile, the magnetic working medium 4 starts to be magnetized, and the temperature of the magnetic working medium 4 rises; the driving device drives the magnet 3 to move upwards along the piston cavity 2, the magnet 3 extrudes the heat exchange fluid in the cold fluid cavity 5, and the heat exchange fluid enters the hot fluid cavity 6 from the connecting hole 9; because the temperature of the magnetic working medium 4 is increased, the heat generated by the magnetic working medium 4 is taken away by the heat exchange fluid passing through the magnetic working medium 4, the temperature of the heat exchange fluid entering the thermal fluid cavity 6 is increased, the temperature of the thermal fluid cavity 6 is increased, the heating process is realized, the heat generated in the process is taken away by the heating space which needs to be heated outside, the thermal fluid cavity 6 is changed into normal temperature, until the magnet 3 moves to the highest position, the heating process is completed, and then the power supply is cut off.
After the power supply is cut off, the magnetism of the magnet 3 disappears, meanwhile, the magnetic working medium 4 is demagnetized, and the temperature of the magnetic working medium 4 is reduced; the driving device drives the magnet 3 to move downwards along the piston cavity 2, the magnet 3 extrudes the heat exchange fluid in the hot fluid cavity 6, and the heat exchange fluid enters the cold fluid cavity 5 from the connecting hole 9; because the temperature of the magnetic working medium 4 is reduced, the temperature of the heat exchange fluid which passes through the magnetic working medium 4 and then enters the cold fluid cavity 5 is reduced, the temperature of the cold fluid cavity 5 is reduced, the refrigeration process is realized, the cold quantity generated in the process is taken away by the refrigeration space which needs to be refrigerated outside, the cold fluid cavity 5 is changed into the normal temperature until the magnet 3 moves to the lowest position, the refrigeration process is completed, then the power supply is switched on, the heating process is repeated, the continuous refrigeration and heating are realized through the reciprocating circulation, the refrigeration and heating efficiency is increased, and the popularization is facilitated.
Referring to fig. 3 and 4, fig. 3 is a top view of a heat exchange device according to an embodiment of the present invention; fig. 4 is a bottom view of a heat exchange device according to an embodiment of the present invention.
As shown in fig. 1 to 4, as a preferred embodiment, a cold-end heat exchanger 7 is disposed in the cold fluid chamber 5 of the present embodiment, the cold-end heat exchanger 7 is provided with a first inlet end 14 and a first outlet end 15, and the first inlet end 14 and the first outlet end 15 are disposed outside the cylinder 1; a hot end heat exchanger 8 is arranged in the hot fluid cavity 6, the hot end heat exchanger 8 is provided with a second inlet end 16 and a second outlet end 17, and the second inlet end 16 and the second outlet end 17 are arranged outside the cylinder barrel 1.
According to the invention, by arranging the cold-end heat exchanger 7, a first inlet end 14 and a first outlet end 15 of the cold-end heat exchanger 7 can be respectively connected with an external refrigeration space needing refrigeration; in the refrigerating process of the heat exchange device, gas or liquid in a refrigerating space enters the cold-end heat exchanger 7 from the first inlet end 14 to take away cold energy in the cold fluid cavity 5, and then enters the refrigerating space from the first outlet end 15 to cool the refrigerating space; the cold end heat exchanger 7 can rapidly take away the cold energy generated by the heat exchange fluid, and the refrigeration efficiency of the heat exchange device is increased.
According to the invention, the hot end heat exchanger 8 is arranged, and the second inlet end 16 and the second outlet end 17 of the hot end heat exchanger 8 can be respectively connected with the external heating space needing heating; in the heating process of the heat exchange device, gas or liquid in the heating space enters the hot-end heat exchanger 8 from the second inlet end 16 to take heat in the hot fluid cavity 6 away, and then enters the heating space from the second outlet end 17 to heat the heating space; the hot-end heat exchanger 8 can quickly take away heat generated by the heat exchange fluid, and the heating efficiency of the heat exchange device is increased.
As shown in fig. 1 to 4, as a preferred embodiment, the magnet 3 of the present embodiment includes an upper magnet 19, a middle magnet 20, and a lower magnet 21 connected in sequence, and the upper magnet 19, the middle magnet 20, and the lower magnet 21 are electrically connected to a power supply, respectively.
The working principle is as follows: the lower magnet 21 is located at the lowest point, at the moment, the upper magnet 19 is located in the piston cavity 2 at the position of the magnetic medium 4, the upper magnet 19 and the middle magnet 20 are electrified, the lower magnet 21 is not electrified, the magnetic medium 4 starts to be magnetized, the magnet 3 moves upwards, and the heat exchange fluid in the cold fluid cavity 5 is extruded to flow into the hot fluid cavity 6 from the connecting hole 9.
Along with the continuous upward movement of the magnet 3, the intensity of the magnetic field in the magnetic working medium 4 is increased, when the lower magnet 21 starts to enter the piston cavity 2 positioned at the position of the magnetic working medium 4, the power is switched on, at the moment, the magnetic field of the magnetic working medium 4 is strongest, the magnet 3 continuously moves upward, and the heat exchange fluid in the cold fluid cavity 5 is continuously extruded into the hot fluid cavity 6; when the upper magnet 19 is separated from the piston cavity 2 at the position of the magnetic working medium 4, the whole magnet 3 is powered off, the magnetic field disappears, but at the moment, the heat exchange fluid with higher temperature still remains in the magnetic working medium 4, so the magnet 3 continuously moves upwards until the middle magnet 20 is just separated from the piston cavity 2 at the position of the magnetic working medium 4, all the heat exchange fluid with higher temperature remaining in the magnetic working medium 4 enters the hot fluid cavity 6, meanwhile, the temperature of the heat exchange fluid in the hot fluid cavity 6 is also cooled, and at the moment, the upper magnet 19 is located at the highest point.
Then the magnet 3 moves downwards, the heat exchange fluid in the hot fluid cavity 6 enters the cold fluid cavity 5 from the connecting hole 9 under extrusion, the refrigeration process is completed, and continuous refrigeration and heating are realized in a circulating manner. According to the invention, the magnet 3 comprises the upper magnet 19, the middle magnet 20 and the lower magnet 21 which are sequentially connected, the magnet 3 is divided into three parts, and then the time for providing power supply is selected according to the different positions of each part, so that the magnet 3 is not required to be supplied with power all the time, and the electric energy is saved.
As shown in fig. 1 to 4, as a preferred embodiment, the driving device of the present embodiment includes a connecting rod 10, a crankshaft 18 and a prime mover 22 for driving the crankshaft 18 to rotate, the crankshaft 18 is provided with a crank 13, one end of the connecting rod 10 is connected to the magnet 3, and the other end of the connecting rod 10 is movably connected to the crank 13.
In the invention, the crankshaft 18 is arranged, and the prime mover 22 can drive the crankshaft 18 to rotate so as to drive the connecting rod 10 to reciprocate, so that the magnet 3 reciprocates along the piston cavity 2. Optionally, the number of the connecting rods 10 in this embodiment is two, one end of one connecting rod 10 is fixed at the bottom of the magnet 3, the other end of the connecting rod 10 is arranged outside the cylinder barrel 1 and hinged to the other connecting rod 10, the other connecting rod 10 is movably connected to the crank 13, and the joint of the connecting rod 10 and the cylinder barrel 1 is sealed. Optionally, a plurality of cranks 13 of this embodiment can be set up, and a heat transfer device is set up in the position of every crank 13, and a plurality of heat transfer devices work simultaneously, and the total amount of heating and refrigerating is high, and it is fast to give the heat transfer of exterior space.
As shown in fig. 1 to 4, as a preferred embodiment, the prime mover 22 of the present embodiment is an electric motor.
The invention adopts the motor as the prime mover 22, and the motor has wide sources, low requirements on working environment and convenient implementation.
As shown in fig. 1 to 4, as a preferred embodiment, a gap is provided between the magnetic working medium 4 and the magnet 3 in the present embodiment.
According to the invention, the gap is arranged between the magnetic working medium 4 and the magnet 3, and the heat exchange fluid can be filled in the gap between the magnetic working medium 4 and the magnet 3, so that the friction force generated between the magnet 3 and the magnetic working medium 4 during reciprocating motion is reduced, and the service life of the heat exchange device is prolonged. Alternatively, a piston ring may be provided between the magnetic medium 4 and the magnet 3 in this embodiment, the piston ring is a metal ring for being embedded inside a piston groove, and the piston ring is a metal elastic ring with a large outward expansion deformation, and is fitted into a ring groove having a cross section corresponding to the ring groove. The reciprocating and rotating piston rings form a seal between the outer circumferential surface of the ring and the cylinder and one side of the ring and the ring groove by means of a pressure difference of gas or liquid, thus isolating the cold fluid chamber 5 from the hot fluid chamber 6.
As shown in fig. 1 to 4, as a preferred embodiment, a heat insulating layer is provided on the outer surface of the magnetic medium 4 in this embodiment.
According to the invention, the heat insulating layer is arranged on the outer surface of the magnetic working medium 4, so that the heat or cold generated by the magnetic working medium 4 is prevented from overflowing the magnetic working medium 4, and the heat exchange efficiency is increased.
As shown in fig. 1 to 4, in a preferred embodiment, the first inlet port 14 of the present embodiment is provided with a cold-side transfer pump 11, and the second inlet port 16 is provided with a hot-side transfer pump 12.
According to the invention, the cold end delivery pump 11 and the hot end delivery pump 12 are arranged, and in the heating process of the heat exchange device, the hot end delivery pump 12 accelerates the circulation speed of gas or liquid in a heating space from the hot end heat exchanger 8, so that the heating efficiency of the heat exchange device is increased; in the refrigerating process of the heat exchange device, the cold end conveying pump 11 accelerates the circulation speed of gas or liquid in the refrigerating space from the cold end heat exchanger 7, and the refrigerating efficiency of the heat exchange device is increased.
As shown in fig. 1 to 4, as a preferred embodiment, the cold-side heat exchanger 7 and the hot-side heat exchanger 8 of the present embodiment are both S-shaped.
According to the invention, the cold-end heat exchanger 7 is S-shaped, so that the contact area of the cold-end heat exchanger 7 and the heat exchange fluid in the cold fluid cavity 5 is increased, and the heat exchange efficiency is further increased; by arranging the hot end heat exchanger 8 to be S-shaped, the contact area of the hot end heat exchanger 8 and the heat exchange fluid in the hot fluid cavity 6 is increased, and further the heat exchange efficiency is increased.
As shown in fig. 1 to 4, the piston chamber 2 of the present embodiment is cylindrical in shape as a preferred embodiment.
According to the invention, the piston cavity 2 is cylindrical, so that the outer side wall of the magnet 3 is convenient to contact with the inner side wall of the magnetic medium 4, and the magnet 3 can reciprocate along the piston cavity 2.
In summary, the embodiment of the invention provides a piston type continuous magnetic heat exchange device, which comprises a power supply and a sealed cylinder barrel 1, wherein a magnetic working medium 4 is fixedly arranged around the inner side wall of the cylinder barrel 1, the magnetic working medium 4 divides the interior of the cylinder barrel 1 into a cold fluid cavity 5 and a hot fluid cavity 6, and heat exchange fluid is arranged in the cylinder barrel 1; the magnetic working medium 4 is provided with a piston cavity 2 communicated with a cold fluid cavity 5 and a hot fluid cavity 6, a magnet 3 capable of sliding along the piston cavity 2 is arranged in the piston cavity 2, the magnet 3 is electrically connected with a power supply, and the magnetic working medium 4 is provided with a connecting hole 9 communicated with the cold fluid cavity 5 and the hot fluid cavity 6; drive means for driving the magnet 3 to reciprocate along the piston chamber 2 are also included.
The working principle is as follows: the power supply energizes the magnet 3, the magnet 3 generates magnetism after being energized, meanwhile, the magnetic working medium 4 starts to be magnetized, and the temperature of the magnetic working medium 4 rises; the driving device drives the magnet 3 to move upwards along the piston cavity 2, the magnet 3 extrudes the heat exchange fluid in the cold fluid cavity 5, and the heat exchange fluid enters the hot fluid cavity 6 from the connecting hole 9; because the temperature of the magnetic working medium 4 is increased, the heat generated by the magnetic working medium 4 is taken away by the heat exchange fluid passing through the magnetic working medium 4, the temperature of the heat exchange fluid entering the thermal fluid cavity 6 is increased, the temperature of the thermal fluid cavity 6 is increased, the heating process is realized, the heat generated in the process is taken away by the heating space which needs to be heated outside, the thermal fluid cavity 6 is changed into normal temperature, until the magnet 3 moves to the highest position, the heating process is completed, and then the power supply is cut off.
After the power supply is cut off, the magnetism of the magnet 3 disappears, meanwhile, the magnetic working medium 4 is demagnetized, and the temperature of the magnetic working medium 4 is reduced; the driving device drives the magnet 3 to move downwards along the piston cavity 2, the magnet 3 extrudes the heat exchange fluid in the hot fluid cavity 6, and the heat exchange fluid enters the cold fluid cavity 5 from the connecting hole 9; because the temperature of the magnetic working medium 4 is reduced, the temperature of the heat exchange fluid which passes through the magnetic working medium 4 and then enters the cold fluid cavity 5 is reduced, the temperature of the cold fluid cavity 5 is reduced, the refrigeration process is realized, the cold quantity generated in the process is taken away by the refrigeration space which needs to be refrigerated outside, the cold fluid cavity 5 is changed into the normal temperature until the magnet 3 moves to the lowest position, the refrigeration process is completed, then the power is switched on, the heating process is repeated, the refrigeration and the heating are realized through the reciprocating circulation, the heat exchange efficiency is increased, and the popularization is facilitated.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A piston type continuous magnetic heat exchange device is characterized in that: the device comprises a power supply and a sealed cylinder barrel, wherein a magnetic working medium is fixedly arranged around the inner side wall of the cylinder barrel, the magnetic working medium divides the interior of the cylinder barrel into a cold fluid cavity and a hot fluid cavity, and heat exchange fluid is arranged in the cylinder barrel; the magnetic working medium is provided with a piston cavity communicated with the cold fluid cavity and the hot fluid cavity, a magnet capable of sliding along the piston cavity is arranged in the piston cavity, the magnet is electrically connected with a power supply, and the magnetic working medium is provided with a connecting hole communicated with the cold fluid cavity and the hot fluid cavity; the driving device is used for driving the magnet to reciprocate along the piston cavity;
the driving device is used for driving the magnet to move upwards along the piston cavity after the magnet is electrified to generate magnetism and the magnetic working medium starts to be magnetized until the magnet moves to the highest position, so that a heating process is completed, and then the magnet is powered off;
after the magnetic working medium is powered off and demagnetized; the driving device is used for driving the magnet to move downwards along the piston cavity until the magnet moves to the lowest position, a refrigeration process is completed, and then the magnet is electrified.
2. The piston-type continuous magnetic heat exchange device according to claim 1, characterized in that: a cold end heat exchanger is arranged in the cold fluid cavity and provided with a first inlet end and a first outlet end, and the first inlet end and the first outlet end are arranged outside the cylinder barrel; the hot end heat exchanger is arranged in the hot fluid cavity and provided with a second inlet end and a second outlet end, and the second inlet end and the second outlet end are arranged outside the cylinder barrel.
3. The piston type continuous magnetic heat exchange device according to claim 2, characterized in that: the magnet comprises an upper magnet, a middle magnet and a lower magnet which are sequentially connected, and the upper magnet, the middle magnet and the lower magnet are respectively and electrically connected with a power supply.
4. The piston-type continuous magnetic heat exchange device according to claim 1, characterized in that: the driving device comprises a connecting rod, a crankshaft and a prime mover used for driving the crankshaft to rotate, a crank is arranged on the crankshaft, one end of the connecting rod is connected with the magnet, and the other end of the connecting rod is movably connected with the crank.
5. The piston-type continuous magnetic heat exchange device according to claim 4, characterized in that: the prime mover adopts an electric motor.
6. The piston-type continuous magnetic heat exchange device according to claim 1, characterized in that: and a gap is arranged between the magnetic working medium and the magnet.
7. The piston-type continuous magnetic heat exchange device according to claim 1, characterized in that: and a heat insulation layer is arranged on the outer surface of the magnetic working medium.
8. The piston type continuous magnetic heat exchange device according to claim 2, characterized in that: the first inlet end is provided with a cold end delivery pump, and the second inlet end is provided with a hot end delivery pump.
9. The piston-type continuous magnetic heat exchange device according to claim 2, characterized in that: and the cold end heat exchanger and the hot end heat exchanger are both S-shaped.
10. The piston type continuous magnetic heat exchange device according to claim 1, characterized in that: the piston cavity is cylindrical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358311.0A CN111503936B (en) | 2020-04-29 | 2020-04-29 | Piston type continuous magnetic heat exchange device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358311.0A CN111503936B (en) | 2020-04-29 | 2020-04-29 | Piston type continuous magnetic heat exchange device |
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| Publication Number | Publication Date |
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| CN111503936A CN111503936A (en) | 2020-08-07 |
| CN111503936B true CN111503936B (en) | 2023-01-10 |
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| CN202010358311.0A Active CN111503936B (en) | 2020-04-29 | 2020-04-29 | Piston type continuous magnetic heat exchange device |
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