JP2007244953A - Filter apparatus for cleaning regeneration - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a filter apparatus for cleaning regeneration by which the identification of the maintenance periods of a pre-filter and a main filter is made possible and the annual total maintenance period by maintenance personnel is reduced. <P>SOLUTION: The filter apparatus is provided with the main filter 1 which catches and stores extremely minute dust and a pre-filter 2 which is disposed on the front surface of the main filter and catches and stores the relatively coarse dust. The apparatus is configured to clean or exchange the main filter and the pre-filter respectively in different periods in compliance with the maintenance period of the main filter and the maintenance period of the pre-filter, in which the pre-filter is constituted of one layer structure of a nonwoven fabric to increase a surface area and to prolong a continuous use period of the pre-filter itself and thereby the maintenance period of the pre-filter is matched with the maintenance period of the main filter so that the main filter and the pre-filter can be cleaned and exchanged in the same maintenance period. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a filter device for cleaning and regeneration that is installed in a building or the like together with air conditioning / cooling facilities and ventilation facilities and is regularly maintained by maintenance personnel.

In general, a cleaning / regeneration filter device installed in a building or the like together with air conditioning / cooling facilities and ventilation facilities is provided with a main filter and a pre-filter attached to the front of the main filter separately. A typical configuration example is shown in FIGS.
In the figure, reference numeral 11 denotes a main filter that collects extremely fine dust. A pre-filter 12 is attached to the front surface of the main filter and collects relatively coarse dust. Reference numeral 13 denotes a frame for connecting the main filter 11 and the pre-filter 12. The main filter 11 and the pre-filter 12 are connected and fixed to the frame 13 by a pre-filter mounting frame 14 and a wing nut 15 for mounting the pre-filter 12. Yes. In the figure, 16 indicates the air flow direction. That is, the pre-filter 12 is attached to the front (upstream) side with respect to the air flow direction 16.
In the filter device having such a configuration, relatively coarse dust is collected by the pre-filter 12 on the front surface, and extremely fine dust is collected by the main filter 11, so that the life of the main filter 11 is extended. Can be achieved.

  In the conventional cleaning and regeneration filter device, the pre-filter 12 has a considerably shorter maintenance cycle than the main filter 11 due to its function. Therefore, the pre-filter 12 is washed 4 to 6 times / year by washing with water, whereas the main filter 11 is maintenance by once / year replacement or maintenance by ultrasonic cleaning once / year using ultrasonic cleaning or the like. In the case of replacement, it is calculated that water washing or replacement is required at a cycle of 2 to 3 times / year. In particular, the maintenance of the pre-filter 12 is connected and fixed by tightening nuts, etc., so that it takes a considerable amount of work time to install and remove it. There was a problem of becoming enormous. Further, from the viewpoint of the environment, replacing the prefilter 12 at a rate of 2 to 3 times / year results in a large amount of industrial waste, which causes environmental problems.

  The present invention has been made to solve the above-described problems, and has an integrated structure in which the main filter and the pre-filter can be easily attached and detached, thereby extending the life of the element by increasing the surface area of the pre-filter. The purpose of this invention is to provide a cleaning / regeneration filter device that reduces the total maintenance time per year by maintenance personnel by making the maintenance cycle the same as that of the main filter.

  The cleaning / reproducing filter device according to the present invention includes a main filter that collects extremely fine dust, and a pre-filter that is provided in front of the main filter and collects relatively coarse dust. In accordance with the maintenance cycle and the maintenance cycle of the pre-filter, the main filter and the pre-filter are cleaned or replaced at different cycles, respectively, and the pre-filter has a single layer structure of non-woven fabric and increases the surface area. By extending the continuous use period of the filter itself and adjusting it to the maintenance cycle of the main filter, the main filter and the pre-filter can be cleaned or replaced at the same maintenance cycle.

  The main filter is integrally fixed to the inner wall surface of the box-shaped outer frame with an adhesive or the like, and the pre-filter is interposed between the front surface of the main filter and a spacer bonded to the inner wall surface of the outer frame. It is detachably mounted from the front opening side of the outer frame by a fitting type.

  According to this invention, the prefilter has a single layer structure of non-woven fabric, the surface area is increased, the continuous use period of the prefilter itself is lengthened, and the main filter and the prefilter are made to match the maintenance cycle of the main filter. Since cleaning or replacement can be performed at the same maintenance cycle, the total maintenance time per year by maintenance personnel can be shortened. Also, reducing the pre-filter replacement work time can contribute to a reduction in annual maintenance costs. Furthermore, another effect of not generating industrial waste can be obtained.

Embodiment 1 FIG.
Hereinafter, a cleaning and regenerating filter device and a cleaning and regenerating method thereof according to Embodiment 1 of the present invention will be described with reference to FIGS.
FIG. 1 is an exploded perspective view showing a cleaning / reproducing filter device according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing the cleaning / reproducing filter device according to Embodiment 1 of the present invention.

  In the figure, reference numeral 1 denotes a main filter having a two-layer structure of non-woven fabric, which collects extremely fine dust as in the conventional case. Reference numeral 2 is a pre-filter having a one-layer structure of a non-woven fabric, which is a mini-pleat type and has a peak height that is 10 times or more than before by increasing the height of the peak. The pre-filter 2 is attached to the front surface of the main filter 1 and collects relatively coarse dust. Reference numeral 3 denotes a box-shaped outer frame made of, for example, plywood, galvanized iron plate, stainless steel plate, or synthetic resin. The main filter 1 is integrally fixed to the inner wall surface of the outer frame by an adhesive such as hot melt. Yes. Reference numeral 4 denotes a spacer bonded to the front side of the main filter 1 and to the left and right inner wall surfaces of the outer frame 3. This spacer 4 is located between the main filter 1 and the prefilter 2 when the prefilter 2 is incorporated into the outer frame 3 from the front opening side of the outer frame 3, and keeps an interval between them. The flow is made uniform. The pre-filter 2 is detachable from the outer frame 3 and is detachably mounted by a fitting type without a fixing tool such as a nut tightening. Therefore, the pre-filter 2 and the main filter 1 have an integral structure with the outer frame 3 interposed therebetween. In the figure, 6 indicates the direction of air flow. That is, the pre-filter 2 is detachably attached to the outer frame 3 on the front surface (upstream) side with respect to the air flow direction 6 without using a fixture.

In the cleaning / reproducing filter device having such a configuration, relatively coarse dust is collected by the pre-filter 2 on the front surface, and extremely fine dust is collected by the main filter 1. Can prolong life.
In addition, the surface area of the prefilter 2 is greatly increased to 10 times or more that of the conventional method, thereby improving the dust holding power of the prefilter 2 and extending the continuous use period of the prefilter 2 element itself. It becomes possible to plan. As a result, the maintenance cycle of the pre-filter 2 can be changed from a short cycle of 4 to 6 times / year for conventional water washing and 2-3 times / year for replacement to a long time of 1 time / year for the main filter 1. This makes it possible to make the so-called maintenance cycle the same. Therefore, it is not necessary to frequently wash and wash the prefilter 2 or to replace it frequently, and the annual total maintenance time by the maintenance staff can be remarkably shortened. In addition, by adopting an integrated structure of the prefilter 2 and the main filter 1 by a fitting type that does not use the connecting fixture of the prefilter 2, the replacement work time of the prefilter 2 can be reduced, and the annual maintenance cost is reduced. Can also contribute to the reduction of energy consumption.

  In addition, if the pre-filter 2 can be used for a long period of time and the maintenance cycle with the main filter 1 is made identical, a mini-pleat structure and a structure that improves the dust holding capacity cannot be washed with water. However, since the main filter 1 and the pre-filter 2 can be separated, ultrasonic cleaning can be performed once / year using ultrasonic cleaning. In addition, since the main filter 1 and the pre-filter 2 are separated from each other, dust and scales do not stay between the main filter 1 and the pre-filter 2 so that the cleanliness can be kept high, and the washing can be performed independently at the same time. It is possible to do. This provides another effect that ultrasonic cleaning is possible and industrial waste is not generated.

  In addition, by installing the spacer 4 between the main filter 1 and the pre-filter 2, it is possible to form a constant air flow space, so that the efficiency of the main filter 1 cannot be lost.

It is a disassembled perspective view which shows the filter apparatus for washing | cleaning reproduction | regeneration in Embodiment 1 of this invention. It is a perspective view which shows the filter apparatus for washing | cleaning reproduction | regeneration in Embodiment 1 of this invention. It is a disassembled perspective view which shows the conventional filter apparatus for washing | cleaning reproduction | regeneration. It is a perspective view which shows the filter apparatus for conventional purification | cleaning regeneration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main filter 2 Pre filter 3 Outer frame 4 Spacer 6 Air flow direction 11 Main filter 12 Conventional pre filter 13 Frame 14 Pre filter mounting frame 15 Wing nut 16 Air flow direction

Claims (4)

A main filter that collects extremely fine dust, and a pre-filter that is provided in front of the main filter and collects relatively coarse dust, and that has a maintenance cycle for the main filter and a maintenance cycle for the pre-filter. In addition, in the cleaning and regeneration filter device in which the main filter and the pre-filter are cleaned or replaced at different periods,
The prefilter has a single layer structure of non-woven fabric, the surface area is increased to prolong the continuous use period of the prefilter itself, and the main filter and the prefilter are made the same by adjusting to the maintenance cycle of the main filter. A cleaning / reproducing filter device characterized in that it can be cleaned or replaced at a maintenance cycle. A main filter that has a structure of two or more layers of non-woven fabric and collects extremely fine dust, and a pre-filter that is provided in front of the main filter and has a one-layer structure of non-woven fabric and collects relatively coarse dust. In the cleaning and regeneration filter device, in which the main filter and the pre-filter are cleaned or replaced at different intervals according to the maintenance cycle of the main filter and the maintenance cycle of the pre-filter,
By increasing the surface area by increasing the height of the pre-filter with a non-woven single-layered mini-pleated structure, the pre-filter itself can be used for a longer period of time, and adjusted to the maintenance cycle of the main filter, A cleaning and regenerating filter device, wherein the main filter and the pre-filter can be cleaned or replaced at the same maintenance cycle.   The main filter is integrally fixed to the inner wall surface of the box-shaped outer frame with an adhesive or the like, and the pre-filter is interposed between the front side of the main filter and a spacer bonded to the inner wall surface of the outer frame. 3. The cleaning / reproducing filter device according to claim 1, wherein the filter is attached in a detachable manner from the front opening side of the outer frame.   4. The cleaning according to claim 3, wherein the prefilter is detachably attached to the outer frame by a fitting type without a fixture, and the prefilter and the main filter have an integrated structure with the outer frame interposed therebetween. Filter device for regeneration.

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