JPH0419342Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention is used, for example, to preheat combustion air with high-temperature exhaust gas. a pair of connection part housings that contact each end face over the entire circumference of the rotor cell, and a heat storage body for heat exchange is rotatably integrated with the rotor cell, and a heat storage body for heat exchange is provided in both the connection part housings. The selected selector plates are brought into contact with both end surfaces of the heat storage body separately, and springs are applied to the both connection housings to press the both connection housings against the rotor cell and the selector plates against the heat storage body. the selector plate and the heat storage body partition the inside of the housing into a high temperature side flow path and a low temperature side flow path, and a part of the heat storage body is provided in the high temperature side flow path. The present invention also relates to a heat exchanger whose remaining portion is communicated with the low temperature side flow path.

[Prior art]

The above heat exchanger is disclosed in Japanese Patent Application Laid-open No. 61-120759 (Japanese Patent Application Laid-open No.
62-280583) was proposed earlier.
As shown in FIG. 4, the rotor cell 2 and both connection housings 3a and 3b are sealed by mutual contact, and the heat storage body 1 and selector plate 8 are sealed by mutual contact. , the pressing of both the connecting portion housings 3a, 3b against the rotor cell 2 and the pressing of both selector plates 8 against the heat storage body 1 are maintained by springs 10 acting on both connecting portion housings 3a, 3b, and elasticity is applied to the parts where sealing is required. The rotor cell 2, the connection housings 3a, 3b, the heat storage body 1, and the selector plate 8, which can be selected from any suitable material without requiring any deformable materials, are designed to meet the operating temperature conditions and have excellent wear resistance. It can be made of a material, preferably ceramics, so that the seal part has sufficient heat resistance, thermal shock resistance, and abrasion resistance, and
Even if wear occurs, the action of the spring 10 ensures that good sealing performance is maintained.

[Problem that the invention attempts to solve]

However, the rotor cell 2 and the connection housing 3
a, 3b, the heat storage body 1, and the selector plate 8 are always pressed against each other by the spring 10 and are slid together, so that it is possible to prevent the wear at these sliding contact parts from progressing considerably over many years. However, the durability was still not perfect, and there was room for further improvement.

The purpose of the present invention is to improve the previously proposed heat exchanger so that it has even better wear resistance.

[Means to solve the problem]

The characteristic configuration of the present invention is that a stopper is used to set the distance between a pair of connection housings, which have a selector plate that is in sliding contact with the rotor cell and a heat storage body, and can be brought closer to each other by a spring that acts to bring them closer together. , is provided outside the housing formed by the rotor cell and both connection housings, and its effects are as follows.

[Effect]

In other words, since the stopper is provided outside the housing, there is no sliding contact with the rotating rotor cell or heat storage element, or in other words, there is no change in the set distance due to wear on the sliding contact, and the stopper connects both sides. The closest distance between the housings can be reliably maintained as specified over a long period of time.

Therefore, the rotor cell, the connection housing,
If the closest distance between the connection housings is set appropriately during assembly, such as using a stopper to prevent the connection housings from approaching each other when the heat storage element and selector plate wear out even slightly, the rotor cell, Wear of the connection part housing, heat storage body, and selector plate hardly progresses after a certain point because the strong pressing force of the spring does not act on them. Furthermore, since wear does not progress in this way, the seals between the rotor cell and the connection housing and between the heat storage body and the selector plate are also maintained sufficiently well.

[Effect of idea]

As a result, we were able to improve the previously proposed heat exchanger, which has excellent high-temperature durability and thermal shock resistance, into one with extremely excellent wear resistance and a sufficiently long life.

〔Example〕

Next, an example will be shown with reference to FIGS. 1 and 2.
a cylindrical ceramic rotor cell 2 in which a ceramic heat exchange heat storage body 1 is rotatably integrated;
A housing is formed by a pair of ceramic connection housings 3a and 3b that contact both end faces of the rotor cell 2 over the entire circumference and separately,
Both connection housings 3a and 3b are connected with bolts 4.
It is connected with.

A rotating shaft 5 to which a heat storage body 1 is attached is installed across both connection housings 3a and 3b, and a drive device M
The heat storage body 1 is moved through the high temperature side flow path 6 by driving the rotating shaft 5 by
and the low temperature side flow path 7, and the rotor cell 2 can be driven and rotated freely.

A ceramic selector plate 8 provided on each of the connection housings 3a and 3b is connected to the heat storage body 1.
A high-temperature side flow path 6 and a low-temperature side flow path 7 are defined by separately abutting both end faces of the high-temperature side flow path 6 and low-temperature side flow path 7.

A compression type coil spring 10 is provided between all the nuts 9 attached to the bolts 4 and the connection part housings 3a, 3b, and the biasing action of the spring 10 causes both the connection part housings 3a, 3b to be connected to the rotor cell 2 and both selector plates. 8 to the heat storage body 1, and finish all of the pressing surfaces flat and smooth by wrapping or the like, A between the connection housings 3a, 3b and the rotor cell 2, and B between the selector plate 8 and the heat storage body 1. It has a seal against it.

A cylindrical stopper 12 is fitted around the rotor cell 2 into both the connection housings 3a and 3b, and both end surfaces of the stopper 12 are placed close to the collars of the connection housings 3a and 3b. The closest distance between 3a and 3b due to the spring 10 is set by the tension of the stopper 12.

In other words, as the rotor cell 2 and the heat storage body 1 rotate, the rotor cell 2 and the connection housings 3a, 3
b. When the heat storage body 1 and the selector plate 8 wear out only slightly, the pressure contact by the spring 10 at the sliding seal part is no longer performed due to the action of the stopper 12, and the rotor cell 2, the connection part housings 3a, 3b, The structure is such that the wear of the heat storage body 1 and the selector plate 8 hardly progresses.

One side 3a of the connection part housing is provided with a connecting pipe 11a for connecting to the high temperature fluid transport path and a connecting pipe 11b for connecting to the medium temperature fluid transport path, and the other side 3b is provided with a connecting pipe 11c for connecting to the medium temperature fluid transport path and a connecting pipe 11c for connecting to the low temperature fluid transport path. A connecting pipe 11d is provided, and the heat storage body 1 is formed with a porous structure that allows ventilation in the direction of its rotation axis, so that a part of the heat storage body 1 is placed in the high temperature side flow path 6, and the remaining part is placed in the low temperature side flow path. The heat storage body 1 is connected to the heat storage body 1 by the high-temperature side fluid that is communicated with the passage 7 and sent from the connection pipe 11a through the heat storage body 1 to the connection pipe 11c.
At the same time, the heat storage body 1 is cooled by the low-temperature fluid sent from the connecting pipe 11d through the heat storage body 1 to the connecting pipe 11b, and as the heat storage body 1 rotates, the temperature changes between the high-temperature side fluid and the low-temperature side fluid. It is designed to transfer heat.

[Another example]

Next, another example will be shown.

Heat storage body 1, rotor cell 2, connection housing 3
The materials of a, 3b, selector plate 8, etc. can be selected appropriately depending on the usage conditions, and highly refractory ceramics such as alumina are preferable, but for example, at relatively low temperatures, metal or plastic may be used in part or in whole. You may use it.

Since the heat storage body 1 and the rotor cell 2 are integrally provided so as to be freely driven and rotatable, the structure can be changed appropriately.
b may be used as a rotatable support plate, or the rotor cell 2 may be interlocked with the drive device M.

The mounting configuration, number of springs 10, structure, etc. of the springs 10 can be changed as appropriate. For example, the springs 10 may be provided so as to act on each of the pair of connection housings 3a and 3b separately, or the springs 10 may be provided with a tension type coil spring or the like. The spring 10 may be formed as a disc spring or the like, and in short, the spring 10 may be arranged so as to act on both the connecting portion housings 3a, 3b from the outside.

The specific structure of the stopper 12 can be changed as appropriate. For example, the stopper 12 can be formed into a split tube shape that can be divided and assembled freely to facilitate assembly and repair inspection, or as shown in FIG.
Attach the double nut screwed onto bolt 4 to stopper 1.
2, the closest distance between the two connecting portion housings 3a and 3b can be appropriately adjusted and set, and various other methods can be used.

The use of the heat exchanger can be freely selected.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a sectional view and FIG. 2 is a view taken along the - line in FIG. 1. FIG. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a sectional view of a conventional example. 1... Heat storage body, 2... Rotor cell, 3a, 3b
...Connection housing, 6...High temperature side flow path, 7...
...Low temperature side flow path, 8...Selector plate, 10
...Spring, 12...Stopper.

Claims (1)

[Scope of utility model registration request] The housing is formed by a rotatable cylindrical rotor cell 2 and a pair of connecting housings 3a and 3b that contact both end surfaces of the rotor cell 2 over the entire circumference and separately, and are used to store heat for heat exchange. body 1
are internally rotatably integrated with the rotor cell 2, and the selector plates 8 provided in both the connection part housings 3a, 3b are brought into contact with both end surfaces of the heat storage body 1, respectively, so that the both connection part housings 3a, 3
A spring 10 is provided on the outside of the housing so as to act on both the connecting portion housings 3a and 3b, and presses the selector plate 8 against the rotor cell 2 and the selector plate 8 against the heat storage body 1, respectively. 1 and the inside of both the connection housings 3a and 3b are divided into a high temperature side flow path 6 and a low temperature side flow path 7, a part of the heat storage body 1 is placed in the high temperature side flow path 6, and the rest is placed in the low temperature side. This is a heat exchanger that communicates with a flow path 7, and is provided with a stopper 12 outside the housing for setting the closest distance between the two connection housings 3a and 3b by the spring 10. vessel.