JPH08266848A - Adsorbing structure - Google Patents

Abstract

PURPOSE: To form an adsorbing structure by folding a net body, on which adsorbing base material particles are fixed, in weaving state and attaching unwoven fabric on the outside surface of the creases of one side, to reduce the pressure loss at the time of passing through the net body by preventing gas flow from passing through a layered net bodies and to vary the array density of the adsorbing base material particles in the flow direction by controlling the folding pitch. CONSTITUTION: The adsorbing structure 1 is formed by fixing activated carbon particles 2 as the adsorbing base material particles on the wire net 3, folding the wire net 3 in weaving state and attaching the unwoven fabric 4 on one side of the creases. As the gas flow passes through the net body only once different from in the case of net bodies laminating type, the pressure loss is reduced. And the array of the activated carbon particles 2 is made rough in the gas flow direction by increasing the folding pitch P. Thus, the balance between the pressure loss and adsorption capacity is controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorbing structure, such as a deodorizing filter, which allows a fluid to pass through and adsorbs a foreign fluid contained in the fluid.

[0002]

2. Description of the Related Art There is a deodorizing element as disclosed in, for example, Japanese Utility Model Laid-Open No. 63-6029. This is one in which granular activated carbon is fixed to a net as an adsorbent and laminated.

[0003]

An adsorbent is fixed to and laminated on such a net, and the number of layers is increased in order to increase the adsorption capacity per inflow front surface area. Becomes big. Of the pressure loss, the nets are multiple, so the pressure loss due to the net is large. Further, when the adsorbent falls off, there is no means for preventing the outflow to the downstream side.

[0004]

The present invention is an adsorption structure in which a net body having adsorbent material particles fixed thereto is folded in a weaving shape and a nonwoven fabric layer is provided along the outer surface of the fold on one side.

[0005]

In this adsorption structure, the fold width between the fold line on one side of the net and the fold line on the other side is the thickness. As the adsorption structure, a fluid is made to flow in from the other side in the thickness direction. The fluid passes between the adsorbing element particles, and the foreign fluid is adsorbed by the adsorbing material particles. In this case, since the mesh passes through the mesh only once, the pressure loss due to the mesh can be small.

Further, this suction structure can be made into a suction structure having a small pressure loss by making the folding pitch coarse from the net having the same folding width. The non-woven fabric is on the downstream side and has a function of preventing outflow of the adsorbed material particles that have fallen off, and is particularly useful for maintaining the pitch when the folding pitch of the net body becomes rough.

[0007]

EXAMPLE FIG. 1 shows an example. In the adsorption structure 1, activated carbon particles 2 as adsorption material particles are fixed to a mesh body 3, and the mesh body 3 is folded in a weaving shape with a folding width a, and a nonwoven fabric 4 is arranged along one fold. . The mesh 3 is made of a general resin or metal and has an opening of 10 mm to 1 mm, and the activated carbon particles 2 having an average particle size of 10 mm to 0.2 mm are fixed. These dimensions are appropriately selected according to the purpose of use. The binder used for fixing has a fixing force with respect to the activated carbon particles 2, and it is desirable not to lose the flexibility of the adsorbing structure. An emulsion type acrylic pressure-sensitive adhesive is preferable, and the mesh 3 is coated with a spray or coater. The method of doing is suitable.

Activated carbon particles 2 are adhered to a net body 3 coated with a binder using a powder spray, the net body 3 is vibrated lightly to remove the activated carbon particles not fixed by the binder, and the nonwoven fabric 4 is folded to one of the creases. When pressed along the side, the nonwoven fabric 4 adheres to the net body 3 by the binder applied to the net body 3. This is dried in a constant temperature bath to obtain the adsorption structure 1. Particularly in the adsorption structure 5 having a coarse pitch p as shown in FIG. 3, the non-woven fabric 4 is effective for maintaining the pitch P if the non-woven fabric 4 is fixed to the net body 3 with a binder. Further, in both of FIGS. 1 and 3, the nonwoven fabric 4 prevents the activated carbon particles 2 from flowing away to the downstream side. If the non-woven fabric 4 has a low density and a bulky property with a cushioning property, clogging due to dust in the gas can be prevented.

For example, air is made to flow in the direction of arrow A, and foreign substances such as odorous gas are adsorbed by the activated carbon particles 2. The air flow passes through the mesh of the mesh 3 only once, and there is no increase in pressure loss due to the accumulation of the mesh 3. Also the pitch p
By increasing or decreasing, the density of the activated carbon array in the gas passage thickness direction as an adsorption structure can be changed even if the attachment density of the activated carbon particles on the surface of the net 3 is the same, and the adsorption capacity and pressure loss are balanced. It can be adjusted and set as desired.

[0010]

According to the present invention, since the adsorbing structure is constructed by folding the net body to which the adsorbent material particles are fixed in a weaving shape, unlike the conventional one in which the net bodies are laminated, the loss force for passing the net body is reduced. There is little loss. Moreover, since the arrangement density of the adsorbing material particles in the thickness direction can be adjusted, the balance between the adsorbing performance and the pressure loss can be set to a desired state. The non-woven fabric prevents the adsorption material particles from flowing off to the downstream side.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment.

FIG. 2 is a diagram showing a state of a net body according to the embodiment.

FIG. 3 is a cross-sectional view showing another embodiment.

[Explanation of symbols]

 2 Activated carbon particles (adsorption material particles) 3 Net 4 Nonwoven fabric

Claims (1)

[Claims] 1. An adsorption structure in which a net body to which adsorbent material particles are fixed is folded in a weaving shape, and a non-woven fabric layer is provided along the outer surface of the fold on one side.