JPS613994A - Rotary element for total heat exchanger and/or dehumidifier - Google Patents

Abstract

PURPOSE:To permit to increase coating amount under maintaining the adhesive property of adsorbent, improve latent heat efficiency and prevent generation of static pressure loss with respect to passing air-flow by a method wherein the adsorption layer of the rotary element is formed with recess and protuberance on the surface thereof. CONSTITUTION:When the recess and protuberance are formed on a base material 1 by embossing process so as to have the size of 5 times or more of the grain size of the adsorbent 2 and 5 times or less of the thickness of the base material 1, a surface area, onto which the adsorbent 2 is coated, increases 30-40% and moisture absorbing amount is increased by 20-30% since the moisture absorbing amount can be increased in proportion to the amount of coating substantially while dropping of the adsorbent 2 can be prevented upon processing or operating due to the recess and protuberance of the base material 1. Further, the recess and protuberance of the base material 1 provide the airflow with the affection in a degree that the thickness of the base material 1 becomes thicker in only the appearance thereof, therefore, the static pressure loss may not be increased, the increase of sensitive heat efficiency due to the recess and protuberance may be suppressed to the lowest limit and the efficiency of latent heat may be improved remarkably due to the increase of the moisture absorbing amount.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a total heat exchanger and/or a total heat exchanger with improved latent heat efficiency.
The present invention also relates to improvements in rotary elements used in dehumidifiers.

<Prior art> Rotary elements such as adsorption plastic total heat exchangers, which are manufactured by coating an adsorbent such as silica gel on a metal base material such as aluminum foil formed in a honeycomb structure, are generally It is said that it is difficult to make the efficiency of latent heat equal to the efficiency of sensible heat at the time of tsuyu (for example, in Japan). Although it is theoretically possible to increase the efficiency of latent heat generation by increasing the amount of adsorbent such as silica gel coated on the substrate, the adsorption layer formed by the adsorbent will become thicker. This causes an increase in static pressure loss for the air flow (or gas flow) K passing through the rotary element, and the adsorption agent drops during corrugation of the base material or during operation, reducing the efficiency of latent heat. There are inconveniences that cause deterioration.

<Problems to be Solved by the Invention> The present invention increases the amount of coketail while maintaining the adhesion of the adsorbent, increases the efficiency of latent heat, and increases the efficiency of latent heat passing through the rotary element. It is an object of the present invention to provide a rotary mounting for a total heat exchanger and/or dehumidifier that does not cause static pressure losses to the air flow (or gas flow).

<Means for Solving the Problems> The structure of the present invention for achieving such an object is that in a rotary element manufactured by coating an adsorbent on a base material, an adsorption layer formed of the adsorbent is formed. It is characterized by having unevenness formed on the surface.

<Example> Hereinafter, the rotary element according to the present invention will be described in detail using an example.

The base material used in the present invention is made of a metal such as aluminum foil, or an inorganic or organic material, and the adsorbent used is silica gel, alumina, aluminum hydroxide, or the like. The above-mentioned adsorbent is placed on a base material with a honeycomb structure and corrugated to form a rotary element. In the present invention, irregularities are formed on the surface of the adsorption layer made up of the above-mentioned adsorbent. be done.

To form irregularities on the surface of the adsorption layer, the base material 1 is embossed to form irregularities on the base material 1 itself as shown in FIG. What is necessary is to form irregularities on the surface of the adsorption layer. In this case, if the unevenness of the base material 1 is made by embossing to be more than 5 times the particle diameter of the adsorbent 2 and less than 5 times the thickness of the base material 1, the static pressure loss due to air flow can be suppressed and the amount of moisture absorbed can be increased. The most favorable results were obtained in terms of preventing the adsorbent from falling off.

That is, when unevenness is formed on the base material 1 within the above range, the surface area coated with the adsorbent 2 increases by aO = 40 times, and the amount of moisture absorption can be increased almost in proportion to the amount of adsorbent 2. Therefore, the moisture absorption amount is 20 to 30
As the temperature rises, the unevenness of the base material 1 prevents the adsorbent 2 from falling off during machining or operation. Moreover, base material 1
The unevenness has no effect on the air flow (or gas flow) to the extent that the base material 1 is apparently thicker, so static pressure loss does not increase, and the increase in sensible heat efficiency due to the unevenness is minimized. If it is possible to suppress the amount of moisture absorbed, the efficiency of latent heat will be significantly improved. Therefore, even if total heat exchange or dehumidification is performed between high-temperature, humid air and low-temperature, low-humidity air, dew condensation within the rotary element will not cause dust accumulation or clogging. do not have.

Incidentally, the unevenness on the surface of the adsorption layer in the present invention is achieved by forming a heat transfer surface (mass transfer surface) to the extent that it does not affect the flow path resistance of air flow (or gas flow). The purpose is to promote mass transfer (e.g. moisture transfer) without significant impact, thereby improving latent heat efficiency. Therefore, in order to form irregularities on the surface of the adsorption layer 20, as shown in FIG. A mixture of the foaming agent 3 and the adsorbent 2, in which the surface of the adsorption layer is made uneven, and the adsorption layer is made up of the adsorbent 2, which is coated on the surface using the unevenness of the kernels. may be coated on the base material 1 to form irregularities. In addition, instead of the embossed base material 1,
Extracted metal, net-like material, and fibrous material may be used as the base material.

<Effects of the Invention> As described above in detail with reference to the embodiments shown in the drawings, the rotary element according to the present invention has irregularities formed on the surface of the adsorption layer, so that the adsorbent is not tightly attached to the rotary element. The amount of coating can be increased while maintaining the properties, the latent heat efficiency is improved, and the static pressure loss with respect to the air flow (or gas flow) passing through the element does not increase.

[Brief explanation of the drawing]

1 and 2 are partially enlarged sectional views of a rotary element according to the present invention. 1...Base material 2...Adsorbent 3...Organic foaming agent Agent Patent attorney Shibe Mitsuishi (and 1 other person) Procedural amendment June 17, 1985

Claims (1)

[Claims] A rotary element for a total heat exchanger and/or dehumidifier, characterized in that the rotary element is manufactured by coating an adsorbent on a base material, and the adsorption layer made of the adsorbent has irregularities formed on the surface thereof. .