WO2019130883A1

WO2019130883A1 - Material container and magnetic heat pump device

Info

Publication number: WO2019130883A1
Application number: PCT/JP2018/042251
Authority: WO
Inventors: 巌内門
Original assignee: サンデンホールディングス株式会社
Priority date: 2017-12-28
Filing date: 2018-11-15
Publication date: 2019-07-04
Also published as: JP2019120426A

Abstract

[Problem] To provide a material container capable of being filled easily, reliably, and more precisely even when being filled with multiple types of magnetic materials M. [Solution] A material container 10 is for a magnetic heat pump device that comprises a permanent magnet capable of rotating about a central shaft and the material container 10 disposed in an annular shape on the outer circumference of the permanent magnet and housing magnetic material M therein. The container has a plurality of container segmentation bodies 11 comprising an inner diameter side cylindrical portion 11a and an outer diameter side cylindrical portion 11b that are concentrically disposed, and a plurality of partition portions 11c dividing a cylindrical space formed between the inner diameter side cylindrical portion 11a and the outer diameter side cylindrical portion 11b. Each container segmentation body 11 is made of resin. The material container 10 is configured by connecting the plurality of container segmentation bodies 11 coaxially in series.

Description

Material container and magnetic heat pump device

The present invention relates to a technology relating to a magnetic heat pump apparatus, and more particularly to a technology relating to a material container that contains a magnetic material that exerts a magnetocaloric effect.

As described in Patent Document 1, in the magnetic heat pump device, a plurality of working chambers 2 are arranged along the circumferential direction on the outer peripheral side of the permanent magnet 3 fixed to the rotating shaft P, and a magnetic material is used in each working chamber 2 6 is stored (see FIGS. 1 and 2). In addition, a valve is provided to flow the working fluid (heat exchange medium) into and out of the magnetic material 6 in the working chamber 2 in synchronization with the rotation of the permanent magnet 3. In FIG. 2, reference numeral 7 denotes a yoke.
The opening of the axial end of each working chamber 2 is closed by the communication hole plate 1 shown in, for example, Patent Document 1 and FIG. 1, and the communication hole plate 1 (valve plate) communicates with each working chamber 2 Holes 1a and 1b are formed. The communication holes 1a and 1b constitute, for example, an outflow communication hole on the outer peripheral side and an inflow communication hole on the inner peripheral side.

In FIG. 1, the case where the rotary disk 4 of the rotary valve which rotates with the rotation of the permanent magnet 3 is provided on the front side of the communication hole plate 1 is illustrated. In the rotary disk 4, slit-

like notches

4a and 4b extending in the circumferential direction are opened as ports of the valve, and supply control of working fluid is performed via the

notches

4a and 4b. Here, for example, among the

notches

4a and 4b, the outer peripheral side is for outflow and the inner peripheral side is for inflow.
Here, the valve applied to the magnetic heat pump device to which the present invention is applied may not be a rotary valve.

The material container accommodating the above-mentioned conventional magnetic material has dimensions such as an outer diameter of 150 mm and an axial length of 150 mm, for example. That is, although the thickness of the cylindrical portion is as thin as about 2 to 3 mm, the material container is long in the axial direction, and a plurality of partition portions for forming a plurality of working chambers by partitioning the space along the circumferential direction. Have.

Patent No. 5488580

In order to increase the heat exchange efficiency in the magnetic heat pump apparatus, plural kinds of magnetic materials having different Curie temperatures are axially arranged in each working chamber so that predetermined temperature spans are formed at both axial ends of the working chamber. It is possible to carry out stepwise loading and loading different types of magnetic materials in cascade (serial).
At this time, it is necessary to fill each working chamber with the full length by repeating filling the space of each working chamber with a predetermined amount of magnetic material in the order of Curie temperature. However, as described above, since the working chamber has a long axial length, and there are 12 filling locations for the working chamber, etc., the filling order may be incorrect or the amount of each magnetic material may be mistaken. In this case, variations in the amount of each magnetic material are likely to occur. Furthermore, after assembly, it is difficult to correct the quantity.

The present invention focuses on the above-described points, and an object of the present invention is to provide a material container that can be filled easily, reliably, and more precisely even when filling multiple types of magnetic materials.

In order to solve the problem, one aspect of the present invention is a permanent magnet rotatable around a central axis, and a material container disposed annularly on the outer peripheral side of the permanent magnet and housing a magnetic material therein. The material container in a magnetic heat pump apparatus, comprising: an inner diameter side cylindrical portion and an outer diameter side cylindrical portion arranged concentrically; and formed between the inner diameter side cylindrical portion and the outer diameter side cylindrical portion A cylindrical space is provided at preset intervals in the circumferential direction, and a plurality of partition walls are respectively integrated with the outer diameter surface of the inner diameter side cylindrical portion and the inner diameter surface of the outer diameter side cylindrical portion The container divisions are made of resin, and the plurality of container divisions are coaxially connected in series.
It is preferable that a partition part in which a working fluid can pass and an opening through which the magnetic material can not pass is formed between the adjacent container divisions.

According to one aspect of the present invention, by forming the plurality of container divisions connected in series, the same type of magnetic material can be filled in each container. As a result, the variation in the amount of each magnetic material among the working chambers is suppressed, and it becomes possible to fill the plurality of types of magnetic materials simply, reliably, and more accurately.
In addition, it is necessary to divide only the wrong part and assemble it again after being assembled.
In addition, by making each container division body made of resin, processing is easy and cost is low, and weight reduction is achieved.

It is a schematic exploded view explaining the composition of a magnetic heat pump device. It is a front view which shows the structure of the conventional material container (working chamber). It is a perspective view showing the material container concerning the embodiment based on the present invention. It is a perspective view showing the container division object concerning the embodiment based on the present invention. It is a perspective view which shows the example of arrangement | positioning of a container division body. It is a figure which shows the example of the arrangement | sequence of the magnetic material in one working chamber. It is a figure which shows the example of the connection structure between container divisions.

Next, embodiments of the present invention will be described with reference to the drawings.
(Constitution)
The basic configuration of the magnetic heat pump device of the present embodiment is the same as the conventional configuration shown in FIG. 1, but the structure of the material container having the work chambers arranged in the circumferential direction is different. Therefore, the material container of the present embodiment will be described below.
As shown in FIG. 3, the material container 10 of the present embodiment is configured by coaxially connecting a plurality of container divisions 11 in series.

As shown in FIG. 4, each of the container divisions 11 is disposed between the inner diameter side cylindrical portion 11a and the outer diameter side cylindrical portion 11b arranged concentrically, and between the inner diameter side cylindrical portion 11a and the outer diameter side cylindrical portion 11b. The cylindrical spaces to be formed are provided at preset intervals in the circumferential direction, and each is integrated with the outer diameter surface of the inner diameter side cylindrical portion 11a and the inner diameter surface of the outer diameter side cylindrical portion 11b. And a plurality of partition walls 11c. And each space divided by the partition becomes a part of work room 12, respectively.
Here, since the material container 10 is a member having a long axis such as an axial length of 150 mm, for example, a complex process is required to integrally form it with a resin. On the other hand, in the present embodiment, by dividing the material container 10 into a plurality of container divided bodies 11, it becomes possible to integrally mold each container divided body 11 with a resin.

In the case where the material container 10 is constituted by a plurality of container divisions 11 divided in the axial direction, for example, the material is divided into molds in the axial direction. At this time, it is preferable to produce each container division body 11 by dividing | segmenting by the axial length of the range which the dimension of a drawing taper does not influence. For this reason, it is preferable to make the length of the axial direction of each container division body 11 into the range of 10 mm or more and 30 mm or less, for example. In addition, the length of each container division body 11 may differ.
The resin material used for the container division body 11 is not particularly limited as long as the glass transition temperature or the melting point is higher than the upper limit value of the heating temperature generated by the magnetic heat pump device.

Furthermore, on both sides in the axial direction of the container division body 11, there are attached partition parts 20 in which an opening through which the working fluid can pass and the magnetic material M can not pass is formed. The partition part 20 is made of, for example, a mesh material. The partition part 20 may be only one of the container divisions 11 in the axial direction.
At this time, it is preferable to fill the chambers of the container division 11 with the same type of magnetic material M. For example, after the bulkhead part 20 is attached to one side of the container division body 11, it is placed horizontally with the open side up. And the partition part 20 is attached also to the other edge part side as needed.

After preparing the plurality of container divisions 11 filled with different magnetic materials M as described above, as shown in FIG. 5, the plurality of container divisions 11 are connected in series in order of Curie temperature of the filled magnetic materials M Then, the material container 10 as shown in FIG. 3 is configured. When providing the partition part 20 only in one side of the container division body 11, it may be made to connect so that it may pile up one by one.
In FIG. 3, reference numeral 10A is a marking for positioning, and by connecting so that the markings 10A are aligned, it is possible to easily prevent a circumferential displacement between the container divisions 11.
In the present embodiment, the Curie temperature of the magnetic material M can be increased in multiple stages as the axial dimension of the container divided body 11 is reduced.

FIG. 6 shows an example of a cascade (series) state of a plurality of magnetic materials M in one working chamber 12, but in a case where 21 container divisions 11 are connected in series to form a material container 10 It is an example. In the above-mentioned conventional case, it is estimated that the limit is to put at most about four types of magnetic materials M in layers in order to accurately stack them. On the other hand, if the material container 10 of this embodiment is used, even if it is lamination | stacking of 5 steps or more, it is possible to set accurately and simply.
The number of container divisions 11 connected in series may be set according to the number of stacks, and is, for example, 5 to 30, preferably 10 to 20.

Next, the connection structure between the container divisions 11 will be described.
As shown in FIG. 7, in the container division body 11, the connecting projection 14 projecting in the axial direction is formed with respect to one end face in the axial direction, and the connecting projection 14 is formed on the other end face in the axial direction. A fitting connection recess 15 is formed. It is preferable that the connecting hole 14 be configured so as to have a slight interference fit in the connecting hole recess. Since the connection protrusion 14 and the connection recess 15 are made of resin, they are fitted with a predetermined elasticity.

In FIG. 7, reference numeral 16 denotes a positioning projection. The positioning projection 16 is formed on at least one location on the outer peripheral surface of the coupling projection 14 and protrudes in the outer diameter direction. In FIG. 7, reference numeral 17 denotes a positioning recess corresponding to the positioning protrusion 16. By connecting the positioning protrusions 16 so as to fit in the positioning recesses 17, it is possible to prevent circumferential displacement.
FIG. 7 shows an example in which the mesh material as the partition wall component 20 and the seal component 13 are arranged in the connection concave portion 15 in this order.
In addition, the example of the position of each wall part is collectively shown in figure in FIG.

As described above, when the material container 10 of the present embodiment is used, it is possible to fill the same type of magnetic material M for each container by configuring the plurality of container division bodies 11 connected in series. Become. As a result, the variation in the amount of each magnetic material M among the working chambers 12 is suppressed, and it becomes possible to fill the plurality of types of magnetic materials M easily, reliably, and more accurately. In addition, a plurality of magnetic materials M having different Curie temperatures can be set in multiple stages as compared with the conventional case, and even in such a case, the magnetic materials M can be accurately set in a stacked state.
In addition, it is necessary to divide only the wrong part and assemble it again after being assembled.

Moreover, making each container division body 11 into resin makes it easy to process and inexpensive, and contributes to weight reduction.
Here, in the above description, the partition part 20 is interposed between the container divisions 11, but the partition part 20 may be omitted.
Even when the partition wall part 20 is omitted, by filling the magnetic material M corresponding to each time the container divisions 11 are stacked, it is possible to set a plurality of magnetic materials M having different Curie temperatures in more stages. Even in such a case, it is possible to set each magnetic material M in a stacked state with high accuracy.

DESCRIPTION OF SYMBOLS 10 Material container 11 Container division body 11a Inner diameter side cylinder part 11b Outer diameter side cylinder part 11c Partition wall part 12 Work room 13 Seal parts 14 Connection projection part 15 Connection recess part 16 Positioning projection part 17 Positioning recess part 20 Partition part product M Magnetic material

Claims

The material container in a magnetic heat pump device, comprising: a permanent magnet rotatable around a central axis; and a material container disposed in an annular shape on the outer peripheral side of the permanent magnet and containing a magnetic material therein.
The cylindrical space formed between the inner diameter side cylindrical portion and the outer diameter side cylindrical portion arranged concentrically and the inner diameter side cylindrical portion and the outer diameter side cylindrical portion is preset in the circumferential direction. A plurality of container divisions provided at intervals and having a plurality of partition portions each integrally formed with the outer diameter surface of the inner diameter side cylindrical portion and the inner diameter surface of the outer diameter side cylindrical portion;
Each container division body is made of resin,
What is claimed is: 1. A material container for a magnetic heat pump device, wherein the plurality of divided container portions are coaxially connected in series.
The magnetic heat pump device according to claim 1, characterized in that a partition part is formed between the adjacent container divisions in which an opening through which the working fluid can pass and the magnetic material can not pass is formed. Material container.
The material container for the magnetic heat pump device according to claim 1 or 2, further comprising a connection structure for connecting the adjacent container divided bodies.
A magnetic heat pump apparatus comprising the material container according to any one of claims 1 to 3, wherein different types of magnetic materials are accommodated in each container division body.