JPS6145864Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a case in which a cylindrical axial adsorbent having air permeability in the direction of the center line of the cylindrical axis is housed so as to be rotatable in one direction around the center line of the cylindrical axis. Two walls each having a surface along the radial direction of the adsorbent are provided in each space toward which both ends of the adsorbent are directed, and these walls allow the space to be used as a first space for the adsorbed gas to pass through.
The present invention relates to a seal structure for an adsorption/desorption device that is divided into a chamber and a second chamber for passing high temperature gas for desorption.

In this type of adsorption/desorption device, if the seal between the wall and the adsorbent is poor, the high-temperature gas for desorption leaks into the first chamber, which not only causes a loss of heat in the high-temperature gas but also reduces the supply to the adsorbent. There was a drawback that good desorption could not be carried out due to insufficient heat, resulting in deterioration of early adsorption performance.

For this purpose, it is possible to create a seal between the adsorbent and the wall, but since the adsorbent rotates in a direction perpendicular to the surface of the wall, the elastic seal is easily bent by the rotation of the adsorbent. It was difficult to maintain sealing properties.

The present invention aims to eliminate such drawbacks and achieve good sealing performance.

In order to achieve this object, the present invention provides a seal structure for the adsorption/desorption device described above, in which the inner pressure of the two chambers partitioned by the wall is increased in the direction of rotation of the adsorbent. An elastic plate-shaped seal member is provided on the side wall facing the adsorbent and extends longer than the gap between the wall and the adsorbent, and a bag-like elastic seal member is provided on the other wall. A structure is adopted in which the chamber and the internal space are communicated with each other and extend toward the adsorbent.

In other words, the free end of the elastic plate-shaped seal member provided on the upper wall in the rotational direction is bent toward the inside of the high internal pressure chamber by sliding contact with the adsorbent, and this bending is caused by the pressure difference between the two chambers. The free end portion is brought into pressure contact with the adsorbent.

Therefore, the sealing performance in this part is good.

Next, on the wall on the lower side in the direction of rotation, sealing cannot be achieved with the plate-shaped sealing member as described above, but the present invention extends the bag-shaped elastic sealing member as described above. The free end of the shaped seal member that comes into pressure contact with the adsorbent has a bent surface that goes from the external low-pressure side chamber to the high-pressure side chamber, and as the internal pressure becomes larger than the external low-pressure chamber, this bent surface portion will be pressed against the adsorbent.

In this way, by pressing the elastic seal member against the adsorbent using the internal pressure difference between the two chambers, the sealing performance can be improved better than before, and as the internal pressure difference increases or decreases, the seal's contact with the adsorbent Since the pressure contact force also increases or decreases, there is no need to press the seal against the adsorbent body excessively to hasten the wear of the seal member.

Next, an embodiment of the present invention will be described.

A holding member 2 for a cylindrical suction body 3 is arranged in a rectangular box-like case 1, and the suction body 3 is housed so as to be rotatable in one direction.

The adsorbent 3 has a honeycomb shape and has air permeability in the direction of its center line.

This adsorbent is, for example, a honeycomb-shaped paper made by mixing activated carbon fibers or activated carbon powder with other fibers.

In the spaces on both sides of the holding member 2 in the center line direction, two walls 4 and 5 having surfaces along the radial direction of the suction body 3 (the member 2) are installed on the sides facing the suction body 3. The other parts are integrally connected to each other by other walls 6..., and then these walls 4, 5,
The interior surrounded by 6... is the second chamber 8, 8' through which the desorbed high-temperature gas B passes, and the other part is the first chamber 7, 7' through which the adsorbed gas A passes.

In Fig. 2, the first chamber 7 from the left side to the right side,
The internal pressure of the first chamber 7 on the left side is set to approximately 70 mmH ₂ O in order to make the adsorbed gas flow toward the second chamber 7'.
The internal pressure of chamber 7' is approximately 10 mmH ₂ O.

In addition, in the second chambers 8 and 8', the internal pressure of the second chamber 8 on the left side is set to about 50 mmH 2 O, and the internal pressure of the second chamber 8 on the right side is set to about 50 mmH ₂ O in order to flow high-temperature gas from the right side to the left side in FIG. The internal pressure of ' is approximately 100mmH ₂ O.

Seal members 9 and 1 are attached to the side edges of the walls 4 and 5 facing the adsorption body 3 as follows.
0 is set. (See Figure 3) This seal structure is also the same as the right side on the left side of Figure 2, except that the high pressure side chamber is changed to the first chamber, so the structure on the right side is shown below.
A description of the structure on the left side will be omitted.

First, in the second chamber 8', which is a high-pressure chamber, a plate-like elastic sheet member 9 is provided on the wall 4 on the upper side in the rotational direction of the adsorbent 3, the width of which is longer than the gap between the wall 4 and the adsorbent 3. is extended.

The other wall 5 has a side edge on the adsorbent 3 side formed in a U-shaped cross section that opens toward the adsorbent 3 side.

Then, a bag-like elastic sheet member 10 having a tow-like cross section
The ends of both sides are fixed to the U-shaped sides, respectively, and a vent hole 11 is formed in the U-shaped sides inside the second chamber 8'.

In this way, the internal pressure of the bag-shaped elastic sheet member 10 is made similar to the internal pressure of the second chamber 8'.

The bag-shaped elastic sealing member may be an elastic cylindrical or elliptical seal, or a polygonal cylindrical seal such as square or pentagonal, and may have a vent hole on the high pressure chamber side.

Further, the internal pressure of each chamber is not limited to the above numerical values, and may be any of various commonly used pressures.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the seal structure of the adsorption/desorption device according to the present invention, FIG. 1 is a partially cutaway perspective view showing the entire adsorption/desorption device, FIG. 2 is a cross-sectional plan view,
FIG. 3 is an enlarged cross-sectional plan view showing the main parts. DESCRIPTION OF SYMBOLS 1... Case, 3... Adsorption body, 4, 5... Wall body, 7... First chamber, 8... Second chamber, 11... Communication port, 9... Elastic plate-shaped sealing member, 10... ...Bag-shaped elastic sealing member.

Claims (1)

[Scope of utility model registration request] The adsorbent is placed in each space toward which both ends of the adsorbent in the direction of the center line of a case in which a circular shaft-shaped adsorbent having air permeability in the direction of the center line of the circular axis is housed so as to be rotatable in one direction around the center line. Two walls having surfaces along the radial direction of the body are provided, and these walls divide the space into a first chamber for passing the gas to be adsorbed and a second chamber for passing the high temperature gas for desorption. In the divided adsorption/desorption device, an elastic plate-shaped sealing member is attached to the wall on the upper side in the rotational direction of the adsorbent in the chamber having a higher internal pressure among the two chambers partitioned by the wall. A bag-shaped elastic sealing member is provided on the other wall so as to extend longer than the gap between the wall body and the absorbent body, and the high internal pressure chamber and the internal space are communicated with each other. The seal structure of the adsorption/desorption device that used to be extended.