JP2013198873A - Adsorption filter and adsorption filter device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorption filter or the like which is capable of improving regeneration efficiency even when heating the adsorption filter or the like from one side.SOLUTION: An adsorption filter includes a base material formed so that air passes, an adsorbent provided on the base material, and a plurality of wires having higher thermal conductivity than that of the base material and provided along the direction through which the air of the base material passes. By such configuration, even when arranging a heating device only on one side of the adsorption filter, the heated state is the same as when arranging the heating device on both sides of the heating device of the adsorption filter. Consequently, the regeneration efficiency of the adsorbent filter is improved.

Description

  The present invention relates to an adsorption filter that adsorbs and captures gaseous, liquid, and particulate components, and an adsorption filter device using the same.

  A dehumidifier having a heater on one side of a part of the adsorption filter has been proposed. According to the dehumidifier, moisture adsorbed on a part of the adsorption filter is released by heat from the heater. As a result, the adsorption capacity of the adsorption filter is regenerated (see, for example, Patent Document 1).

  However, in the dehumidifier, heat distribution occurs in the depth direction of the adsorption filter. That is, the temperature on the side opposite to the heater of the adsorption filter decreases. As a result, the regeneration efficiency on the side opposite to the heater of the adsorption filter decreases.

  On the other hand, a deodorizer provided with heaters on both sides of a part of the adsorption filter has been proposed. According to the deodorizer, the heat distribution in the depth direction of the adsorption filter is made uniform. As a result, the regeneration efficiency of the adsorption filter is improved (see, for example, Patent Document 2).

  However, in the deodorizer, it is necessary to provide heaters on both sides of the adsorption filter. For this reason, a deodorizing machine becomes large. This increases the price of deodorizers. Furthermore, power consumption increases.

Japanese Patent No. 4559502 JP 2001-17523 A

  On the other hand, a technique has also been proposed in which a heater is provided on one side of a part of an adsorption filter formed of a material having high thermal conductivity such as aluminum. According to this technique, the heat distribution in the depth direction of the adsorption filter is made uniform without providing heaters on both sides of the adsorption filter.

  However, in this technique, heat diffuses to a region other than the heating region of the adsorption filter. For this reason, the temperature of the heating area | region of an adsorption filter falls. As a result, the regeneration efficiency of the heating region of the adsorption filter is reduced.

  This invention was made in order to solve the above-mentioned subject, and when it heats from one side, it is providing the adsorption filter which can improve reproduction | regeneration efficiency, and an adsorption filter apparatus using the same.

  The adsorption filter according to the present invention has a base material formed so that air can pass therethrough, an adsorbent provided on the base material, and thermal conductivity higher than that of the base material. And a plurality of wire rods provided along the direction in which the wire passes.

The adsorption filter device according to the present invention includes a heating device provided on at least one of the upstream side and the downstream side of the adsorption filter.

  According to this invention, even when heating from one side, the regeneration efficiency of the adsorption filter can be improved.

It is a front view of the adsorption filter apparatus in Embodiment 1 of this invention. It is a perspective view of the A section of FIG. It is a longitudinal cross-sectional view of the adsorption filter apparatus in Embodiment 1 of this invention. It is a figure for demonstrating the temperature distribution of the adsorption filter in Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the principal part of the adsorption filter apparatus in Embodiment 2 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
In the living environment, there is an extremely high need for removing unpleasant odors generated indoors. Recently, the number of pets exceeds the population of children in the country. For this reason, the market of the deodorant which deodorizes the smell of the manure which a pet excretes and a body odor is expanding. In addition, with the aging of society, the number of elderly people who need nursing care is rapidly increasing. For this reason, in nursing care sites such as old-age facilities and medical institutions, removal of care odor that significantly reduces the workability of caregivers is strongly required.

  Deodorizers and air purifiers having excellent deodorizing performance have been proposed for general household use and business use. In the deodorizer and the air cleaner, the initial deodorizing performance of the deodorizing catalyst carried on the base material is above a certain level. For this reason, if the air is circulated in the room, substantially satisfactory deodorizing performance can be obtained.

  However, when the deodorizing catalyst continues to adsorb odor components, the adsorption capacity of the deodorizing catalyst is saturated. For this reason, it is difficult to maintain the initial deodorizing performance of the deodorizing catalyst.

  Therefore, as a means for realizing sustained deodorization performance, an adsorption filter device has been proposed in which part of the adsorption filter is periodically heated to oxidize and decompose odor components to regenerate the adsorption capacity. Hereinafter, an adsorption filter device for regenerating the adsorption capacity will be described.

  1 is a front view of an adsorption filter device according to Embodiment 1 of the present invention.

  In FIG. 1, 1 is a rotating shaft. The rotating shaft 1 is connected to a motor (not shown). The center of the adsorption filter 2 is fixed to the rotating shaft 1. The adsorption filter 2 is a substantially circular deodorizing filter. The adsorption filter 2 is divided into a plurality of fan-shaped regions. A regeneration heater 3 is arranged upstream of the adsorption filter 2 as a heating device. The regeneration heater 3 is formed in a fan shape substantially equivalent to one of the areas of the adsorption filter 2 on the vertical projection plane.

  In the adsorption filter device, the regeneration heater 3 heats each region of the adsorption filter 2 in a batch manner for a certain period of time. That is, when a certain period of time elapses with the regeneration heater 3 facing one of the areas of the adsorption filter 2, the motor rotates by a predetermined amount so that the area adjacent to the area faces the regeneration heater 3. Thereafter, when a certain time has elapsed, the motor rotates by a predetermined amount so that the area adjacent to the area faces the regeneration heater 3. By repeating this operation, the adsorption capacity of the entire area of the adsorption filter 2 is regenerated.

  The heating temperature at this time is set according to the odor component to be adsorbed and the members constituting the adsorption filter 2. For example, the heating temperature is preferably set so that the surface temperature of the region of the adsorption filter 2 facing the regeneration heater 3 is 180 ° C. or higher.

Next, the structure of the adsorption filter 2 will be described with reference to FIG.
FIG. 2 is a perspective view of part A in FIG.

  As shown in FIG. 2, the adsorption filter 2 includes a base material 2a, an adsorbent 2b, and a wire 2c.

  The base material 2a is formed of ceramic, paper, or the like. The base material 2 a is formed so that the wind passes in the depth direction of the adsorption filter 2. In FIG. 2, the substrate 2a has a honeycomb structure. The number of honeycomb cells is determined according to the specifications of the adsorption filter device. For example, the number of honeycomb cells is selected from several 10 to 900 cells / (square inch).

  The particle diameter of the adsorbent 2b is distributed in the range of several micrometers to 50 micrometers. The adsorbent 2b is carried on the surface of the substrate 2a with a thickness of several tens of micrometers. The adsorbent 2b is made of manganese dioxide, zeolite, or the like. When specializing in adsorbing odor components, additives are added to manganese dioxide, zeolite, and the like. As a result, the deodorizing performance is further improved.

  The wire 2c is formed of a passive material such as stainless steel, aluminum, chromium, titanium, or an alloy thereof. The diameter of the wire 2c is formed uniformly with respect to the longitudinal direction of the wire 2c, or is decreased as the wire 2c proceeds in the longitudinal direction of the wire 2c.

  The wire 2c is incorporated and incorporated in the substrate 2a. The wire 2c is incorporated as close as possible to the substrate 2a. Each wire 2c is assembled so that it may not contact. The method for incorporating the wire 2c into the substrate 2a is not limited. For example, the wire 2c is bonded in advance to the base material 2a in a pre-process of manufacturing the adsorption filter 2, or inserted into the base material 2a in a post-process of manufacturing the suction filter 2.

Next, the heat transfer of the adsorption filter 2 will be described with reference to FIG.
FIG. 3 is a longitudinal sectional view of the adsorption filter device according to Embodiment 1 of the present invention. The left side of FIG. 3 is the adsorption filter 2 provided with the wire 2c. The right side of FIG. 3 is the adsorption filter 2 not provided with the wire 2c.

  In FIG. 3, the left side of the adsorption filter 2 is the windward side. During the heat treatment, air blowing is stopped in order to operate with low power consumption by setting the regeneration heater 3 to a low input. For this reason, the windward side of the adsorption filter 2 is heated in the absence of wind.

  The heat capacity of the substrate 2a is large. That is, the thermal conductivity of the substrate 2a is low. For this reason, in the heating area | region 4 of the adsorption filter 2 which is not equipped with the wire 2c, the heat of the windward side is hard to be transmitted to the leeward side. For this reason, in the said heating area | region 4, the temperature on the leeward side is lower than the temperature on the leeward side.

  On the other hand, in the heating region 4 of the adsorption filter 2 provided with the wire 2c, the windward heat is transmitted to the leeward side via the wire 2c. For this reason, in the said heating area | region 4, the temperature on the leeward side becomes equivalent to the temperature on the leeward side.

Next, the temperature distribution of the adsorption filter 2 will be described with reference to FIG.
FIG. 4 is a diagram for explaining the temperature distribution of the adsorption filter according to Embodiment 1 of the present invention. The horizontal axis in FIG. 4 is the position in the depth direction of the heating region 4 of the adsorption filter 2. The vertical axis in FIG. 4 is the surface temperature of the heating region 4 of the adsorption filter 2.

  In FIG. 4, 5 is a temperature (180 ° C.) required when heating and regenerating 90% or more of the ammonia gas. 6 is the surface temperature of the adsorption filter 2 not provided with the wire 2c. 7 is the temperature of the adsorption filter 2 provided with the wire 2c.

  As shown in FIG. 4, in the adsorption filter 2 not provided with the wire 2c, the surface temperature on the regeneration heater 3 side is about 210 ° C. The central surface temperature is 180 ° C. The surface temperature on the side opposite to the regeneration heater 3 is 180 ° C. or lower. For this reason, in the case of the adsorption filter 2 not provided with the wire 2c, the ammonia gas is not regenerated by heating on the side opposite to the regeneration heater 3 from the center.

  On the other hand, in the adsorption filter 2 provided with the wire 2c, the surface temperature on the regeneration heater 3 side is 180 ° C. or higher. Although the surface temperature at the center is lower than the surface temperature on the regeneration heater 3 side, it is 180 ° C. or higher. The surface temperature on the side opposite to the regeneration heater 3 is 180 ° C. or higher although it is lower than the central surface temperature. For this reason, in the case of the adsorption filter 2 provided with the wire 2c, ammonia gas is heated and regenerated from the regeneration heater 3 side to the opposite side to the regeneration heater 3.

  According to Embodiment 1 demonstrated above, the heat conductivity of the depth direction of the adsorption filter 2 becomes very high by presence of the wire 2c. For this reason, even when the regeneration heater 3 is arranged on one of the upstream side or the downstream side of the adsorption filter 2, the heating state is the same as when the regeneration heater 3 is arranged on both the upstream side and the downstream side of the adsorption filter 2. It becomes. As a result, the regeneration efficiency of the adsorption filter 2 can be improved. In addition, the time required for heating regeneration is shortened. As a result, power consumption required for heating regeneration can be reduced. Further, the structure can be simplified and the size can be reduced. As a result, the manufacturing cost of the adsorption filter device can be reduced.

  Note that both the upstream and downstream regeneration heaters 3 of the adsorption filter 2 may be disposed. In this case, the adsorption filter 2 can be heated and regenerated more reliably.

  Moreover, the wire 2c is included in the base material 2a. For this reason, the pressure loss of the adsorption filter 2 does not increase.

  Further, the plurality of wires 2c do not contact each other. For this reason, it is possible to suppress heat from leaking to a region other than the heating region 4.

  Moreover, the diameter of the wire 2c is formed uniformly with respect to the longitudinal direction of the wire 2c, or is reduced as the wire 2c proceeds in the longitudinal direction. For this reason, the manufacturing process of the wire 2c can be simplified. As a result, the manufacturing cost of the wire 2c can be reduced.

  Moreover, the wire 2c consists of a passive material. As a result, an oxide film is formed on the surface of the wire 2c. For this reason, it can prevent that the wire 2c corrodes by thermal oxidation.

  Note that the end of the wire 2c is preferably exposed from the base 2a to the regeneration heater 3 side. In this case, the heat from the regeneration heater 3 can be more reliably transmitted to the wire 2c.

Embodiment 2. FIG.
FIG. 5 is a longitudinal sectional view of an essential part of the adsorption filter device according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

  In FIG. 5, 2d is an exposed portion of the wire 2c. The exposed portion 2d is exposed from the substrate 2a to the regeneration heater 3 side. The diameter of the exposed portion 2d is larger than the diameter of other portions of the wire 2c.

  According to the second embodiment described above, the heat from the regeneration heater 3 can be more reliably transmitted to the wire 2c.

  The adsorption filter 2 is not limited to a deodorizing filter. For example, the adsorption filter 2 may be a dehumidifying filter. In this case, due to the presence of the wire 2c, the moisture adsorbed by the adsorption filter 2 can be heated and regenerated with high efficiency.

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Adsorption filter 2a Base material 2b Adsorbent 2c Wire 2d Exposed part 3 Regeneration heater 4 Heating area 5 Temperature 6 Surface temperature 7 Surface temperature

Claims (10)

A substrate formed to allow wind to pass through;
An adsorbent provided on the substrate;
A plurality of wires having a higher thermal conductivity than the base material and provided along the direction in which the wind of the base material passes;
Adsorption filter equipped with.   The adsorption filter according to claim 1, wherein the plurality of wires are included in the base material.   The adsorption filter according to claim 1 or 2, wherein the plurality of wires are provided so as not to contact each other.   The adsorption filter according to any one of claims 1 to 3, wherein each wire has a uniform diameter with respect to a longitudinal direction of the wire.   The adsorption filter according to any one of claims 1 to 3, wherein a diameter of each of the wire rods decreases as the wire rod advances in the longitudinal direction.   The adsorption filter according to any one of claims 1 to 5, wherein the plurality of wires are made of a passive material.   The adsorption filter according to any one of claims 1 to 6, wherein end portions of the plurality of wires are exposed from an end surface of the base material.   The adsorption filter according to claim 7, wherein the plurality of wires are formed so that a diameter of an end portion exposed from an end surface of the base material is larger than a diameter of another portion. A heating device provided on at least one of the upstream side and the downstream side of the adsorption filter according to any one of claims 1 to 8,
An adsorption filter device comprising: The base material of claim 7 or claim 8 is arranged such that the exposed end portions of the plurality of wires are on the upstream side,
The adsorption filter device according to claim 9, wherein the heating device is disposed on the upstream side of the base material according to claim 7 or 8.

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