JPH065158B2 - Peripheral seal method for rotary heat exchanger - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for sealing an outer circumference of a rotary heat exchanger in which a rotor made of a porous material is rotated so that heat is exchanged between an intake side and an exhaust side thereof. .

[Conventional technology]

This kind of heat exchanger is formed in a rotary heat storage body of a honeycomb structure by an aluminum plate having a porous aluminum oxide layer having a moisture absorbing action, as shown in, for example, the front view and the sectional view of FIGS. 3 and 4. The formed circular rotor 1 is housed and arranged in a rectangular box-shaped casing 3 having circular openings 2 and 2 formed on both front and rear surfaces.

On the outer periphery of the heat exchanger, a sealing material 4 such as a rubber seal, a metal seal or a carbon seal attached along the peripheral edge of each opening 2 of the casing 3 is brought into sliding contact with the surface thereof along the peripheral edge of the rotor 1. It is sealed by.

On the surface of the rotor 1 with which the sealing material 4 is slidably contacted, a flat metal seal receiving ring 5 is flush with the surface of the rotor 1.
Is embedded, and the tip of the seal material 4 is configured to be in close contact with and slide on the surface of the seal receiving ring 5.

[Problems to be solved by the invention]

However, the process of embedding the seal receiving ring 5 in the surface of the rotor 1 to form the seal surface in this way is very troublesome, and the processing cost is high.

Further, as described in JP-A-62-66033, in a large heat exchanger used for an air conditioner of a coating booth, the honeycomb element forming the rotor 1 as shown in FIG. Each of the 16 to 32 blocks is divided and molded, and after the blocks are combined and assembled into a circular shape, they are integrated by a tightening band 6 as shown in FIG. 4 to form a circular rotor 1. Is made in. Therefore, the large-sized rotor 1 is distorted when the honeycomb element divided into blocks is assembled or after the assembly, resulting in unevenness on the surface, and the seal receiving ring 5 embedded in the distorted part and the normal part are not formed. A step may be formed between the buried seal receiving ring 5 and a seal leak may occur.

Further, according to the conventional method, when the rotor 1 is accommodated and disposed in the casing 3 at the installation site of the heat exchanger, if the rotor 1 is mounted in a state of being misaligned and tilted, There is a possibility that a seal leak may occur due to a portion of the portion which does not slide on the surface of the seal receiving ring 5.

For this reason, extremely high accuracy is required for the assembling work for assembling the honeycomb element divided for each block without distortion to mold the rotor 1 and for the assembling work for attaching the rotor 1 in the casing 3 so that the rotor 1 is not misaligned. Construction technology was required.

[Means for solving problems]

Therefore, the present invention is capable of reliably sealing the outer periphery by simple processing even in a large rotary heat exchanger in which a honeycomb element assembled for each block is assembled to mold a rotor, and high precision is achieved. It is an object of the present invention to provide a peripheral sealing method that does not require the construction technology of

In order to achieve this object, the present invention, in the outer peripheral sealing method of the rotary heat exchanger to perform heat exchange on the air supply side and the exhaust side of the rotor molded in a circular shape by a porous material, first,
The rotor is installed, and thereafter, the surface is filled with a resin material along the periphery of the rotor to which the sealing material is slidably contacted, and a part of the resin material is projected from the surface of the rotor, and then, While rotating the rotor,
A sealing surface molding tool is pressed against the protruding portion of the resin material at a fixed position so that the height of the sealing surface formed on the protruding portion is made even with the height of sliding contact with the sealing material. It is a thing.

[Action]

According to the present invention, after the installation work of the rotor is performed, the surface of the rotor is filled with the resin material along the periphery of the rotor with which the seal material is slidably contacted, and a part of the resin material is projected from the surface of the rotor. A sealing surface is formed on the protruding portion so that the sealing material is brought into sliding contact therewith. Since the height of the sealing surface is made equal to the height of sliding contact with the sealing material, for example, like a large rotary heat exchanger that forms a rotor by assembling honeycomb elements divided for each block. Even when unevenness is generated on the rotor surface due to the distortion of each block generated during the assembly of the honeycomb element or after the assembly, the unevenness is absorbed by the protruding portion of the resin material filled on the surface of the rotor. The seal leakage is surely prevented. Further, since the processing is simpler than the case where the metal seal receiving ring is embedded in the surface of the rotor as in the conventional case, the processing cost required for the outer peripheral sealing becomes very low.

[Example I]

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

1 (a) to 1 (d) are process diagrams showing an example of the method of the present invention.

In this example, after the rotor 1 is housed and disposed in the casing 3, the foam filling material 7 serving as an anchor material is first filled on the surface of the rotor 1 along the periphery of the rotor 1 with which the sealing material 4 is slidably contacted. The resin material 8 is pushed and filled from above, and a part of the resin material 8 is projected from the surface of the rotor 1 (see FIG. 1 (a)). As the resin material 8, a hard resin having excellent wear resistance such as acrylic resin is used.

Next, while rotating the rotor 1, a sealing surface molding tool 9 such as a whirlpool or a trowel for finishing the protruding end of the resin material 8 into a flat sealing surface S is pressed against the protruding portion 8a at a fixed position.
The height of the seal surface S is equalized to the height at which the seal member 4 attached to the casing 3 is in sliding contact (see FIG. 1 (b) and
(See (c)).

As a result, even if a part of the honeycomb element forming the rotor 1 is distorted to cause unevenness on the surface of the rotor 1 as shown in FIG. 1 (c), the unevenness on the surface of the rotor 1 due to the distortion is caused. At the same time as being absorbed by the protruding portion 8a of the filled resin material 8, the sealing surface S formed on the protruding portion 8a of the distorted portion and the sealing surface S formed on the protruding portion 8a of the normal portion are flush with each other. Are evened out.

Further, even when the rotor 1 housed and arranged in the casing 3 is attached in a state where the rotor 1 is misaligned and slightly inclined, the inclination is corrected by the protruding portion 8a.

In this state, the resin material 8 is dried and solidified, and the resin material 8 is adhered to the foam filling material 7 serving as an anchor material and firmly fixed to the surface of the rotor 1. If the lightweight foam filler 7 is used as the anchor material for fixing the resin material 8, an unnecessary load is not applied to the rotation of the rotor 1.

Then, the sealing material 4 is attached along the peripheral edge of the opening 2 of the casing 3, and the sealing material 4 is pressed against the sealing surface S formed on the projecting end of the projecting portion 8a from the front side to be brought into sliding contact.

As described above, according to the method of the present invention, the surface of the rotor 1 is filled with the resin material 8 along the outer periphery thereof, and while the rotor 1 is rotated, the sealing surface molding tool 9 is pressed against the protruding portion 8a of the resin material 8. Sealing material 4 by extremely simple processing that only hits
A sealing surface S that evenly contacts the entire surface is formed, and the outer circumference of the rotor 1 can be reliably sealed.

Therefore, the troublesome processing of burying the metal seal receiving ring 5 on the surface of the rotor 1 is not required, and the processing cost required for the outer peripheral sealing can be significantly reduced.

In addition, even if the rotor 1 has some irregularities on the surface due to the distortion of the honeycomb element, or the rotor 1 is mounted inside the casing 3 in a state of being decentered and slightly inclined, the irregularities and the inclination are Since it can be absorbed or corrected by the protruding portion 8a of the resin material 8 with which the surface of the rotor 1 is filled, it is high in the installation work of the honeycomb element for molding the rotor 1 and the installation work of mounting the rotor 1 in the casing 3. No need for precision construction technology.

Example II

Next, FIG. 2 is an explanatory view showing another example of the method of the present invention.

In this example, as in FIG. 1 (a), the surface of the rotor 1 is filled with the resin material 8 along the periphery thereof, and a part of the resin material 8 is projected from the surface of the rotor 1. Then, the seal surface molding instrument 10 as shown in FIG. 2 is pressed against the protruding portion 8a at a fixed position to rotate the rotor 1.

The seal surface molding device 10 is a concave type sword having a mountain-shaped pointed concave portion, and a part of the protruding portion 8a is protruded outward from the peripheral surface of the rotor 1 and its protruding end is a mountain-shaped protrusion 8b.
Simultaneously with molding, the height of the seal surface S'formed at the tip of the projection 8b is made uniform to a constant height.

When the resin material 8 is dried and solidified, one end of the sealing material 4 is brought into sliding contact with the tip of the projection 8b serving as the sealing surface S ', and the sealing material 4 is arranged parallel to the peripheral surface of the rotor 1. It is attached to the opening 2 of the casing 3.

By doing so, even if the rotor 1 as a whole is axially distorted by the wind pressure of supply and exhaust as shown by the chain line in FIG. 2, the seal surface S ′ of the rotor 1 is separated from the seal material 4. The occurrence of seal leakage is prevented.

Further, since one side of the sealing material 4 is slidably contacted with the sealing surface S'which is the tip of the protrusion 8b having a chevron shape, the contact area between the sealing material 4 and the sealing surface S'is extremely small, and the contact area between the two is very small. The frictional resistance is reduced, and the rotation loss of the rotor 1 is significantly reduced.

In addition, since the contact area between the seal material 4 and the seal surface S ′ is small, the exhaust gas discharged from the coating booth onto the surface of the rotor 1 may be removed from the surface of the rotor 1 such as a total heat exchanger used in an air-conditioning system of a coating booth with air supply. Even if the contained paint resin or the like adheres, the increase in resistance between the seal material 4 and the seal surface S ′ due to the adherence of the paint resin or the like can be minimized.

In each of the above-described embodiments, the protruding portion 8 of the resin material 8 is solidified before the resin material 8 filling the surface of the rotor 1 is solidified.
Although the method for equalizing the height of the seal surface S or S'by pressing the seal surface forming tool 9 or 10 made of a whirlpool or trowel to a has been described, the present invention is not limited to this, and the resin material 8 is After solidified, the protrusion 8a has a grinding tool 11 made of an abrasive such as alundum or corundum as shown in FIG.
The chevron-shaped groove 12 is pressed to grind the surface of the projecting portion 8a to form the chevron-shaped projection 8b on the projecting portion 8a, and at the same time, the sealing surface S'formed at the tip thereof.
It also includes a method to even out the height.

〔The invention's effect〕

As described above, according to the present invention, the outer circumference of the rotary heat exchanger can be reliably sealed by extremely simple processing, so that there is an effect that the processing cost required for outer circumference sealing can be significantly reduced.

In addition, even if unevenness due to the distortion of the honeycomb element is generated on the surface of the rotor, or even if the rotor installed in the casing is tilted due to misalignment, the unevenness and tilt are absorbed or corrected and seal leakage is prevented. Therefore, during the assembly work of the honeycomb element for molding the rotor and the installation work for mounting the rotor in the casing,
This has the excellent effect of eliminating the need for highly accurate construction technology for preventing the rotor from becoming uneven or tilted.

[Brief description of drawings]

1 (a) to 1 (d) are process drawings showing an example of an outer peripheral sealing method according to the present invention, and FIG. 2 is an explanatory view showing another example of an outer peripheral sealing method according to the present invention, FIGS. 3 and 4. FIG. 4A is a front view and a sectional view of a rotary heat exchanger showing a conventional outer peripheral sealing method. DESCRIPTION OF SYMBOLS 1 ... Rotor, 4 ... Seal material, 8 ... Resin material, 8a ... Projection part, 9 ... Seal surface molding tool, 10 Seal surface molding tool, 1
1 ... Grinding tool (seal surface molding tool), S, S '... Seal surface.

Claims (3)

[Claims] 1. A method for sealing an outer circumference of a rotary heat exchanger, wherein heat is exchanged between an air supply side and an exhaust side of a rotor formed by a porous material into a circular shape, comprising: a) after installing the rotor (1), The surface of the rotor (1) along which the sealing material (4) is slidably contacted is filled with a resin material (8), and b) a part of the resin material (8) is covered with the rotor (1). C) Then, while rotating the rotor (1), the sealing surface molding tool (9, 10, 11) is fixed in position on the protrusion (8a) of the resin material (8). And the height of the sealing surface (S, S ') formed on the protruding portion (8a) thereof is made even with the height of sliding contact with the sealing material (4). Method for sealing the outer circumference of a heat exchanger. 2. A whirlpool (9) or a trowel as the sealing surface molding tool.
(10) is used, and before the resin material (8) is solidified, the protrusion (8a) is pressed against the whistle (9) or trowel (10), and the protrusion (8)
The outer peripheral sealing method according to claim 1, wherein the heights of the sealing surfaces (S, S ') formed in a) are made uniform. 3. A grinding tool (11) is used as the sealing surface molding tool, and the protrusion (8a) is formed after the resin material (8) is solidified.
The height of the seal surface (S ') formed on the protrusion (8a) is leveled by pressing the grinding tool (11) against the surface and grinding the surface of the protrusion (8a). The outer peripheral sealing method according to claim 1.