阅读说明：本技术 室温磁制冷机用换流阀及其室温磁制冷机 (Converter valve for room temperature magnetic refrigerator and room temperature magnetic refrigerator thereof ) 是由 张�成 黄焦宏 程娟 王哲 刘翠兰 张英德 朱泓源 戴默涵 李兆杰 金培育 王强 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种室温磁制冷机用换流阀,包括：阀芯和两个阀体,阀体的内侧端面设置有密封槽和多个连接通孔,密封槽位于连接孔的内侧,密封槽内装有密封圈；密封槽内侧设置有阀芯凹台,阀芯凹台设置有多个流体通孔,阀芯凹台在轴心处设置有中心通孔,阀芯凹台的形状为环形；阀芯包括阀芯杆和阀芯盘,阀芯盘上设置有2个阀芯通孔,两个阀芯杆的端部分别连接在阀芯盘两侧,并位于同一轴线上；两个阀体闭合后,两个阀芯杆分别套装在两个中心通孔内,阀芯盘位于两个阀芯凹台内；螺栓穿过连接通孔将两个阀体连接固定。本发明还公开了一种室温磁制冷机。本发明具有结构简单、体积小、集成化程度高、换流过程无噪音等优点。(The invention discloses a converter valve for a room temperature magnetic refrigerator, which comprises: the valve core and two valve bodies, the end surface of the inner side of the valve body is provided with a sealing groove and a plurality of connecting through holes, the sealing groove is positioned at the inner side of the connecting holes, and a sealing ring is arranged in the sealing groove; a valve core concave table is arranged on the inner side of the sealing groove, a plurality of fluid through holes are formed in the valve core concave table, a central through hole is formed in the axis of the valve core concave table, and the valve core concave table is annular; the valve core comprises valve core rods and a valve core disc, 2 valve core through holes are formed in the valve core disc, and the end parts of the two valve core rods are connected to the two sides of the valve core disc respectively and are located on the same axis; after the two valve bodies are closed, the two valve core rods are respectively sleeved in the two central through holes, and the valve core disc is positioned in the two valve core concave tables; the bolt penetrates through the connecting through hole to connect and fix the two valve bodies. The invention also discloses a room temperature magnetic refrigerator. The invention has the advantages of simple structure, small volume, high integration degree, no noise in the current conversion process and the like.)

1. The utility model provides a room temperature is converter valve for magnetic refrigerator which characterized in that includes: the valve core and two valve bodies, the end surface of the inner side of the valve body is provided with a sealing groove and a plurality of connecting through holes, the sealing groove is positioned at the inner side of the connecting holes, and a sealing ring is arranged in the sealing groove; a valve core concave table is arranged on the inner side of the sealing groove, a plurality of fluid through holes are formed in the valve core concave table, a central through hole is formed in the axis of the valve core concave table, and the valve core concave table is annular; the valve core comprises valve core rods and a valve core disc, 2 valve core through holes are formed in the valve core disc, and the end parts of the two valve core rods are connected to the two sides of the valve core disc respectively and are located on the same axis; after the two valve bodies are closed, the two valve core rods are respectively sleeved in the two central through holes, and the valve core disc is positioned in the two valve core concave tables; the bolt penetrates through the connecting through hole to connect and fix the two valve bodies.

2. The converter valve for room temperature magnetic refrigerators according to claim 1, wherein the 2 core through holes are symmetrical about the disk center of the core disk.

3. The converter valve for room temperature magnetic refrigerators according to claim 1, wherein the plurality of fluid passing holes are formed in the same circle.

4. The valve of claim 3, wherein the recess of the valve core is provided with 8 fluid through holes, and the fluid through holes are circumferentially spaced by 45 °.

5. The valve for a room temperature magnetic refrigerator as claimed in claim 1, wherein an inner wall of the connecting through-hole of one of the two valve bodies is provided with an internal thread.

6. The converter valve for room temperature magnetic refrigerators according to claim 1, wherein the two valve bodies have different heights.

7. The valve of claim 1, wherein the depth of the first and second valve core recesses is half of the thickness of the valve core disc.

8. The converter valve for room temperature magnetic refrigerator as claimed in claim 1, wherein the valve body and the valve core are made of ceramic, and the ceramic material is one or more of aluminum nitride, silicon nitride or boron nitride.

9. The valve for a room temperature magnetic refrigerator as claimed in claim 1, wherein the valve body has a cylindrical shape.

10. A room temperature magnetic refrigerator comprising: refrigeration bed, radiator, its characterized in that still includes the converter valve, and the converter valve includes: the valve core and two valve bodies, the end surface of the inner side of the valve body is provided with a sealing groove and a plurality of connecting through holes, the sealing groove is positioned at the inner side of the connecting holes, and a sealing ring is arranged in the sealing groove; a valve core concave table is arranged on the inner side of the sealing groove, a plurality of fluid through holes are formed in the valve core concave table, a central through hole is formed in the axis of the valve core concave table, and the valve core concave table is annular; the valve core comprises valve core rods and a valve core disc, 2 valve core through holes are formed in the valve core disc, and the end parts of the two valve core rods are connected to the two sides of the valve core disc respectively and are located on the same axis; after the two valve bodies are closed, the two valve core rods are respectively sleeved in the two central through holes, and the valve core disc is positioned in the two valve core concave tables; the bolt penetrates through the connecting through hole to connect and fix the two valve bodies; the two fluid through holes are respectively connected with the refrigerating bed and the radiator through pipelines.

Technical Field

The invention relates to a room temperature magnetic refrigeration technology, in particular to a converter valve for a room temperature magnetic refrigerator and the room temperature magnetic refrigerator thereof.

Background

Magnetic refrigeration is developed by utilizing the principle of the magnetocaloric effect of a magnetic material, namely, the magnetic material can generate entropy change in a changing magnetic field and is accompanied with the change of the temperature of the magnetic material. When the external magnetic field of the magnetic material is increased, the magnetic entropy is reduced, and heat is released outwards; when the external magnetic field of the magnetic material is reduced, the magnetic entropy is increased, and heat is absorbed. Magnetic refrigeration has several distinct advantages over gas compression refrigeration:

(1) energy conservation: the circulation efficiency of magnetic refrigeration is as high as 50%, which is 20% higher than that of gas compression refrigeration, so the energy-saving effect is very obvious.

(2) And (3) environmental protection: the raw materials and heat exchange fluid (water) used for magnetic refrigeration have no pollution, and the discharged gas can not damage the atmospheric ozone layer or cause greenhouse effect, so the magnetic refrigeration system is an ideal green refrigeration technology.

The fluid exchange system of the existing combined type room temperature magnetic refrigerator is composed of 5 electromagnetic valves, and the electromagnetic valves can generate larger noise on the one hand when being opened and closed; on the other hand, the solenoid valve which runs for a long time can generate a large amount of heat which can be gradually transferred into the heat exchange fluid flowing through the solenoid valve, and then the heat can directly enter the refrigeration beds at the two sides, so that the refrigerating capacity generated by neutralization is neutralized, and the temperature span of the magnetic refrigerator is reduced. Meanwhile, a commutation system formed by 5 electromagnetic valves is large in size and low in reliability. The fluid exchange system has a complex structure and a large volume, and the switch of the electromagnetic valve generates large noise and heat, so that the design of integration, miniaturization, light weight and silence of the magnetic refrigerator is not facilitated. This becomes a large restriction factor for the civilization of room temperature magnetic refrigerators and needs to be solved urgently.

Disclosure of Invention

The technical problem solved by the invention is to provide the converter valve for the room temperature magnetic refrigerator and the room temperature magnetic refrigerator thereof, which have the advantages of simple structure, small volume, high integration degree, no noise in the conversion process and the like, basically do not generate heat in the operation process, and indirectly ensure the advantage of large temperature span of the magnetic refrigerator.

The technical scheme is as follows:

a converter valve for a room temperature magnetic refrigerator, comprising: the valve core and two valve bodies, the end surface of the inner side of the valve body is provided with a sealing groove and a plurality of connecting through holes, the sealing groove is positioned at the inner side of the connecting holes, and a sealing ring is arranged in the sealing groove; a valve core concave table is arranged on the inner side of the sealing groove, a plurality of fluid through holes are formed in the valve core concave table, a central through hole is formed in the axis of the valve core concave table, and the valve core concave table is annular; the valve core comprises valve core rods and a valve core disc, 2 valve core through holes are formed in the valve core disc, and the end parts of the two valve core rods are connected to the two sides of the valve core disc respectively and are located on the same axis; after the two valve bodies are closed, the two valve core rods are respectively sleeved in the two central through holes, and the valve core disc is positioned in the two valve core concave tables; the bolt penetrates through the connecting through hole to connect and fix the two valve bodies.

Further, 2 spool through-holes are symmetrical about the disk center of the spool disk.

Further, a plurality of fluid through holes are located on the same circle.

Further, the valve core concave table is provided with 8 fluid through holes, and the fluid through holes are arranged at intervals of 45 degrees on the circumference.

Furthermore, in the two valve bodies, an inner thread is arranged on the inner wall of the connecting through hole of one valve body.

Further, the heights of the two valve bodies are different.

Furthermore, the depth of the first valve core concave platform and the second valve core concave platform is half of the thickness of the valve core disc.

Further, the valve body and the valve core are made of ceramic, and the ceramic material is one or more of aluminum nitride, silicon nitride or boron nitride.

Further, the valve body is cylindrical in shape.

A room temperature magnetic refrigerator comprising: refrigeration bed, radiator, converter valve, the converter valve includes: the valve core and two valve bodies, the end surface of the inner side of the valve body is provided with a sealing groove and a plurality of connecting through holes, the sealing groove is positioned at the inner side of the connecting holes, and a sealing ring is arranged in the sealing groove; a valve core concave table is arranged on the inner side of the sealing groove, a plurality of fluid through holes are formed in the valve core concave table, a central through hole is formed in the axis of the valve core concave table, and the valve core concave table is annular; the valve core comprises valve core rods and a valve core disc, 2 valve core through holes are formed in the valve core disc, and the end parts of the two valve core rods are connected to the two sides of the valve core disc respectively and are located on the same axis; after the two valve bodies are closed, the two valve core rods are respectively sleeved in the two central through holes, and the valve core disc is positioned in the two valve core concave tables; the bolt penetrates through the connecting through hole to connect and fix the two valve bodies; the two fluid through holes are respectively connected with the refrigerating bed and the radiator through pipelines.

The invention has the technical effects that:

the functions of a plurality of electromagnetic valves are integrated in one rotary valve, and the valve core is driven by the transmission gear to rotate, so that the opening and closing functions of the plurality of electromagnetic valves are realized; the magnetic refrigerator has the advantages of simple structure, small volume, high integration degree, no noise in the current conversion process and the like, basically does not generate heat in the operation process, and indirectly ensures the advantage of large temperature span of the magnetic refrigerator.

Drawings

FIG. 1 is an exploded view of a converter valve for a room temperature magnetic refrigerator according to the present invention;

fig. 2 is a view showing a state of use of a converter valve for a room-temperature magnetic refrigerator according to the present invention.

Detailed Description

The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.

Fig. 1 is an exploded view of a converter valve for a room temperature magnetic refrigerator according to the present invention.

The structure of the converter valve for the room temperature magnetic refrigerator comprises: the valve comprises a first valve body 1, a valve core 2 and a second valve body 3.

The first valve body 1 is cylindrical, a first sealing groove and 6 uniformly distributed connecting threaded holes 12 are formed in the end face of the inner side of the valve body 1, the first sealing groove is located on the inner side of the connecting threaded holes 12, and a sealing ring 11 is arranged in the first sealing groove; the inner side of the first sealing groove is provided with a first valve core concave table, the first valve core concave table is provided with 8 uniformly distributed first fluid through holes 13, the axis of the first valve core concave table is provided with a first central through hole, and the first valve core concave table is annular. 8 (four pairs) of uniformly distributed first fluid through holes 13 are positioned on the same circle, and the first fluid through holes 13 are spaced by 45 degrees on the circumference.

The valve core 2 comprises a valve core rod 21 and a valve core disc 22, the valve core disc 22 is provided with 2 valve core through holes 23, and the end parts of the two valve core rods 21 are respectively connected to the two sides of the valve core disc 22 and are positioned on the same axis. One valve core rod 21 is sleeved on the first central through hole, the other valve core rod 21 is sleeved on the second central through hole 33, and the front end face of the valve core disc 22 is embedded in the first valve core concave table. The spool rods 21 on both sides of the spool 2 disk are equal in length. The 2 spool through holes 23 are symmetrical about the disk center.

The second valve body 3 is cylindrical in appearance, and a second central through hole 33 is formed in the axis; a second sealing groove is formed in the end face of the inner side of the second valve body 3, 6 uniformly distributed bolt through holes 32, 8 uniformly distributed second fluid through holes 31 and a second central through hole 33 are formed in the second valve body 3, the second central through hole 33 is located at the axis of the second valve body 3, the second fluid through hole 31 is located on the outer side of the second central through hole 33, and the bolt through hole 32 is located on the outer side of the second fluid through hole 31; the position of the bolt through hole 32 corresponds to the position of the connecting threaded hole 12, and the position of the second fluid through hole 31 corresponds to the position of the first fluid through hole 13; the inner end surface of the second valve body 3 is provided with a second spool recess, and the rear end surface of the spool disk 22 is fitted into the second spool recess. After the first valve body 1 and the second valve body 3 are closed, the sealing ring 11 is positioned in the first sealing groove and the second sealing groove to form sealing to the valve core 2, the valve core disc 22 is positioned in a space surrounded by the first valve core concave table and the second valve core concave table, and the bolt penetrates through the bolt through hole 32 to be connected to the connecting threaded hole 12. The 8 evenly distributed second fluid through holes 31 are positioned on the same circle, and the second fluid through holes 31 are spaced by 45 degrees on the circumference.

Except for the threaded hole 12 and the bolt through hole 32, the first valve body 1 and the second valve body 3 have the same structure, and the height of the first valve body 1 is larger than that of the second valve body 3. Of course, the screw hole 12 and the bolt through hole 32 may be non-screw connecting through holes, and in this case, the first valve body 1 and the second valve body 3 have the same structure.

The depth of the first spool recess land and the second spool recess land are respectively half of the thickness of the spool disk 22. The first valve body 1, the valve core 2 and the second valve body 3 are made of ceramic, and the ceramic material is one or more of aluminum nitride, silicon nitride or boron nitride.

The valve core rod 21 is connected with a transmission component, and in the rotating process of the valve core disc 22, the valve core through hole 23 is communicated with the second fluid through hole 31 and the first fluid through hole 13 at different positions in sequence, so that the second fluid through hole 31 and the first fluid through hole 13 at different positions are communicated at intervals. In the preferred embodiment, four pairs (8) of second fluid passage holes 31 serve as four solenoid valves, which are sequentially opened or closed at intervals.

As shown in fig. 2, it is a diagram showing the state of use of the converter valve for the room temperature magnetic refrigerator according to the present invention.

The fluid through holes (the second fluid through hole 31 and the first fluid through hole 13) are used for inflow and outflow of fluid.

The fluid through holes of the first valve body 1 are numbered as: 1. 2, 3, 4, 5, 6, 7 and 8. On the first valve body 1, the fluid through holes 1 and 6 are connected in parallel and then connected with the inlet of the refrigeration bed on the E side, the fluid through holes 3 and 8 are connected in parallel and then connected with the inlet of the refrigeration bed on the F side through a pipeline, and the fluid through holes 2 and 4 are connected in parallel and then connected in series after being connected in parallel and then connected with the fluid through holes 5 and 7 through pipelines.

The fluid through holes of the second valve body 3 are numbered: 1#, 2#, 3#, 4#, 5#, 6#, 7#, and 8 #. On the second valve body 3, the No. 1, No. 2, No. 3 and No. 4 fluid through holes are connected in parallel and then are connected with a water outlet of the pump through a pipeline, and the No. 5, No. 6, No. 7 and No. 8 fluid through holes are connected in parallel and then are connected with a water inlet of the radiator through a pipeline. The radiator is in the same circuit as the pump.

In the process of rotating the valve core 2, the 2 valve core through holes 23 sequentially connect the corresponding fluid through holes on the valve bodies (the first valve body 1 and the second valve body 3) at two sides.

When the magnetic field on the side E is reduced and the refrigeration bed refrigerates, the first valve body 1 is driven by the gear to rotate, so that the two valve core through holes 23 in the valve core 2 are aligned with the two pairs of flow channels 1# and 1#, 8# and 8# in the valve bodies on the two sides, and the first valve body 1 and the second valve body 3 are communicated. At this time, the heat exchange liquid flows through the first valve body 1 from the No. 1 and No. 1 fluid through holes under the action of the pump (the No. 1 fluid through hole is connected with the No. 6 fluid through hole in parallel, but the No. 6 fluid through hole does not have a corresponding port on the first valve body 1 at this time, so that the water flow cannot return), enters the E-side refrigerating bed, then flows through the cold chamber and the F-side refrigerating bed, and then enters the radiator through the No. 8 fluid through hole (the condition of the outlet 3 connected with the No. 8 fluid through hole in parallel is the same as that of the outlet 6, and the flow path is not communicated), and returns to. After the circulation is finished, according to the refrigeration requirement, the heat exchange liquid does not need to enter the refrigeration bed in a period of time, the valve core 2 rotates to align the No. 2 and No. 2 fluid through holes and the No. 7 and No. 7 fluid through holes, so that the two pairs of fluid through holes are communicated, the heat exchange liquid enters through the No. 2 and No. 2 fluid through hole channels, directly flows back to enter the radiator through the No. 7 and No. 7 fluid through holes and returns to the water inlet of the pump.

When the F side refrigerating bed refrigerates, the condition is basically similar to that of the E side, the No. 3 and No. 3 fluid through holes are communicated, the No. 6 and No. 6 fluid through holes are communicated, water of the pump enters the valve body through the No. 3 and No. 3 fluid through holes, flows through the F side refrigerating bed, the cold chamber and the E side refrigerating bed, and flows into the radiator through the No. 6 and No. 6 fluid through holes. Similarly, after the circulation is finished, the liquid does not enter the refrigeration bed for a period of time, enters from the No. 4 and No. 4 fluid through holes, flows out from the No. 5 and No. 5 fluid through holes and enters the radiator to finish the circulation.

The invention can completely replace the existing commutation system consisting of 5 electromagnetic valves in function, greatly simplifies the commutation system, fundamentally removes the noise generated when the electromagnetic valves are opened and closed, and improves the practicability of the magnetic refrigerator.

The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.