JP2010058038A - Prefilter and main filter combined type filter apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a prefilter and main filter combined type filter apparatus capable of performing maintenance even with respect to a main filter member replaced with a new one heretofore without being wholly reutilized to enable reutilization and considering even maintenance washing work. <P>SOLUTION: Frame members are assembled into an almost square shape to form a frame body and a prefilter member, which is constituted by bending a sheetlike filter medium into a mountain-valley-shaped-zigzag repeatedly bent structure, and a main filter member are attached to the opening of the frame body. In the prefilter member, non-adhesive member parts are formed in the valley bottoms to adhere the facing sites with an adhesive. In the main filter member, a plurality of reinforcing ribs are formed to both of the surface and back sides of the sheetlike filter medium so as to leave an interval in the up and down directions of the main filter member and the slot-like drain hole communicating with the space provided between the prefilter member and the main filter member are provided to the under side frame member constituting the frame body by drilling. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention can be installed in air conditioning equipment such as office buildings, condominiums, and ordinary homes, for example, so that dust, dust, pollen, etc. of the outside air can be reliably and does not require a short-term replacement. The present invention relates to a pre-main integrated filter device that can be used for a long period of time without requiring cleaning maintenance.

Conventionally, filter devices have been installed in so-called large air conditioning equipment installed in office buildings and condominiums, as well as air conditioning equipment used in ordinary homes. As a result, dust, pollen, etc. are reliably collected, and safe and comfortable operation of the air conditioning equipment is intended.
Here, as a filter device used in a conventional office building or apartment, a filter member that collects relatively large particles such as dust or dust, for example, dust or dust composed of particles of 10 μm or more, and a vehicle A so-called pre-main one using two types of filter members, such as exhaust gas and tobacco smoke, which are made of relatively small particles, for example, a filter member that collects dust or dust that is particles of 0.3 μm or more. Body filter devices are generally known.

In other words, an office filter device is usually composed of a so-called prefilter for coarse dust and a main so-called medium performance filter (main filter), and the former prefilter member is cleaned and re-executed once every two months, for example. The latter main filter member is configured to be used, and a structure in which the latter main filter member is replaced with a new one every year, for example, without being cleaned and reused has become a common filter device style.
As described above, in the industry that handles air conditioning equipment or the industry that handles filter cleaning, the filter member is unified as a member that is disposable in a short time in both the pre-filter member and the main filter member. .

However, as environmental protection awareness has increased rapidly and internationally in recent years, the effective use of so-called global resources has become an effective standard for corporate evaluations. Along with the introduction, there is an actual situation in which the consumption of the filter member, which is a consumable item, has been rapidly demanded as a need.
Therefore, particularly in a filter device in which a so-called pre-filter and a so-called main filter are integrated, the maintenance period of the pre-filter member is greatly extended, and the main filter member is also required to be maintained and reused. ing.

In this way, if the cycle of cleaning and reuse can be extended without simply disposing the filter member, it will lead to significant resource savings, and the maintenance and cost of so-called filter device maintenance is extremely low. Therefore, it can be efficiently suppressed.
In addition, the used filter member can be recycled (thermal recycling), for example, in a so-called gasification reforming facility intended for resource circulation.
In particular, unlike an office or a commercial store, a hotel where the 24-hour air conditioning equipment is operated consumes the operating time of the filter member in the air-conditioning equipment earlier than the general public.

  Furthermore, in the hotel industry, in order to strengthen security, the actual situation is to reduce the number of acceptances by subcontractors for air conditioning equipment inspection and maintenance. For the hotel side, it is not so much welcomed that the maintenance contractor enters the hotel building once every two months, which is a short period, for the replacement cleaning of the filter member.

For example, assuming that a total of 100 air conditioners are installed in the facility, when maintenance of the conventional main filter member is not performed, the calculation is performed so that 1200 main filter members are disposed of in a year. become. As for the prefilter, the replacement frequency is high every time it is replaced every two to three months, and the labor cost for replacing these one by one is high.
JP 2001-170423 A

Thus, the present invention was devised to address the above-described conventional problems, and in the pre-main integrated filter device, the cleaning maintenance period of the pre-filter member is greatly extended, and conventionally, it is not reused at all. A main filter member that has been replaced with a new one can be maintained and reused, and further, a pre-main integrated filter device that takes into account the maintenance cleaning work performed for reuse. It is intended.

The pre-main integrated filter device according to the present invention includes:
Forming a frame body having an opening penetrating the front and back surfaces by framing a frame member having a predetermined width into a substantially rectangular shape;
In the opening of the frame body, a prefilter member constructed by folding the sheet-like filter material into a mountain-like valley-like zigzag repetitive folding structure with a width narrower than the width of the frame body on the upstream side which is the surface side Attach the zigzag repeated folding structure so that the direction is horizontal,
A predetermined space is opened from the prefilter member on the downstream side which is the back surface side, and the sheet filter material has a width narrower than the width of the prefilter member, and within the width of the frame body together with the prefilter member. The main filter member configured to be folded into a mountain-shaped valley-like zigzag repeated folding structure is attached so that the direction of the zigzag repeated folding structure is horizontal,
The prefilter member is directed in the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, spaced on both the front side and the back side of the sheet-like filter material, and in the vertical direction of the prefilter member, The portion facing the adhesive member is formed by forming a non-adhesive member portion on the bottom of the valley,
The main filter member faces the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, and is spaced on both the front side and the back side of the sheet-like filter material and in the vertical direction of the main filter member. A plurality of reinforcing ribs are formed,
The lower frame member constituting the frame body is provided with a long hole-like drainage hole communicating with a space provided between the pre-filter member and the main filter member.
It is characterized by
Or
The pre-filter member uses a filter material that collects dust having a particle diameter of 1 μm to 1000 μm, and the main filter member uses a filter material that collects dust having a particle diameter of 0.3 μm to 50 μm. did,
It is characterized by
Or
The filter member is made of a synthetic resin material,
It is characterized by
Or
The pre-filter member is formed by overlapping the sheet-like filter material twice and bending it into a mountain-like valley-like zigzag repeated folding structure.
It is characterized by this.

With the pre-main integrated filter device according to the present invention, the cleaning maintenance period of the pre-filter member can be greatly extended, and maintenance of the main filter member that has been replaced with a new one without being reused at all can be performed. There is an excellent effect that it can be reused, and further, the maintenance cleaning work performed for reuse can be considered.

Hereinafter, the pre-main integrated filter device 1 according to the present invention will be described with reference to the drawings.

The pre-main integrated filter device 1 first has a frame body 3 that is rectangularly framed.
The frame 3 uses a frame member 2 having a predetermined width, for example, four pieces of a lower frame member, both side frame members, and an upper frame member. Formed to have an opening.

  Here, the material of each frame member 2 is not limited in any way, but is preferably a member corresponding to so-called recycling, and for example, a recycled chip material such as PET (polyethylene terephthalate) is used. Is preferred.

  In the opening of the frame 3, the sheet-like filter material is formed with a width narrower than the width of the frame 3 on the surface side, in other words, on the upstream side that is the air introduction side. The pre-filter member 4 formed by bending into a zigzag zigzag repetitive folding structure in the shape of a valley is attached so that the zigzag repetitive folding structure is in the horizontal direction.

  Next, a predetermined space 15 is opened from the prefilter member 4 on the back surface side, in other words, the downstream side serving as the air discharge side, so that the width is narrower than the width of the prefilter member 4, and The main filter member 16 formed with the pre-filter member 4 and the space 15 so as to fit within the width of the frame 3 and bent into a mountain-shaped valley-like zigzag repeated folding structure is formed in the direction of the zigzag repeated folding structure. It is attached and configured so that is in the horizontal direction.

Further, the prefilter member 4 faces in the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, and faces both the front side and the back side of the sheet-like filter material and in the vertical direction of the prefilter member 4. At a predetermined interval, a non-adhesive member portion is formed on the valley-shaped bottom portion 5 and the opposing portions are adhered by the adhesive member 14 so that the above-mentioned mountain-shaped valley-like zigzag repeated folding structure does not expand and contract by a certain length. Now it will be fixed.
The reason why the non-adhesive member portion is formed in the valley-shaped bottom portion 5 is that the non-adhesive portion of the valley-shaped bottom portion 5 functions as a cleaning water passage for cleaning maintenance described later. As a result, the efficiency of the cleaning maintenance is improved, and the damage of the filter member 4 more than necessary can be suppressed.

  The main filter member 16 is directed in the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, on both the front side and the back side of the sheet-like filter material, and in the vertical direction of the main filter member 16. A plurality of reinforcing ribs 17 are formed at intervals.

  The reinforcing ribs 17 are formed in a rib shape by pressing each other from the front and back surfaces of the sheet-like filter material and raising the ribs.

As can be seen from the figure, the longitudinal direction of the reinforcing ribs 17 is directed to the zigzag direction of the mountain-shaped valley-like zigzag repeating fold structure, and the direction of rising of the ridges is staggered between the front side and the back side. Configured. The formation of the reinforcing ribs 17 is for the purpose of improving the strength of the main filter member 16, but not only that, but by forming a large amount of the reinforcing ribs 17, the surface area of the sheet-like filter material is increased, whereby the filter processing area is increased. There is also the aim of widening.
Here, when the sheet-like filter material used for the pre-filter member 4 and the main filter member 16 is described, synthetic fibers are generally used for the sheet-like filter material. And as a material of such a synthetic fiber, there are generally polypropylene, polyester, and polyamide (nylon). In addition, vinylon and cotton may also be used.

About these, each has the characteristic on a material, and it is used for each direction according to the characteristic. If the application is wrong, not only the performance as a filter material is impaired, but also the life of the filter material and the filter performance are greatly affected.
Further, the sheet filter material according to the present invention is a type that collects dust and dust consisting of particles of 10 μm or more, and is composed of relatively small particles such as car exhaust gas and cigarette smoke, for example, particles of 0.3 μm or more. There is a type that collects dust and dust.

In the present invention, for the prefilter member 4, a filter material of a type that collects dust and dust composed of particles of 10 μm or more is used so that relatively coarse dust can be collected. The main filter member 16 is made of a relatively small particle such as a car exhaust gas or cigarette smoke, for example, a filter material that collects dust or dust that is a particle of 0.3 μm or more. .
That is, the prefilter member 4 uses a filter material that collects dust having a particle diameter of 1 μm to 1000 μm, and the main filter member 16 collects dust having a particle diameter of 0.3 μm to 50 μm. Filter material is used.

Next, the sheet-like filter material used for the pre-filter member 4 is folded into a state of a mountain-like valley-like zigzag repeated fold structure, and is formed into a substantially square shape.
The method of making such a configuration is not limited to any method or method, and may be configured by a mechanical method or may be performed manually.

However, the length of the sheet-like filter material when folded into the state of a mountain-like valley-like zigzag repetitive folding structure must be long enough to fit in the width direction of the frame 3 framed in the rectangular shape.
The substantially quadrangular filter member 4 is arranged in advance so that the zigzag repeated folding structure continues in the horizontal direction (left-right direction) and can be slightly expanded and contracted.

Next, the adhesive member 14 is applied in the horizontal direction, that is, in the direction in which the zigzag repeated folding structure is continued at a predetermined interval from the state or from the state extended in the form of a flat sheet in the vertical direction. .
This coating operation is performed at a plurality of locations at predetermined intervals in the vertical direction. And this application | coating is performed by both the surface side of the said filter member 4, and a back surface side.
Then, as shown in the figure, the filter member 4 made of a sheet-like filter material is folded into a state where the mountain-like valley-like zigzag repeated folding portions are in close contact with each other, and is formed into a substantially rectangular shape. Become.

By the way, application | coating of the adhesive member 14 is not performed about the location of the valley-shaped bottom part 5, but is made into a non-adhesion part. And the non-adhesion part of this valley-shaped bottom part 5 functions as a washing water passage in the case of the washing maintenance mentioned later.
As a result, the efficiency of the cleaning maintenance can be improved, and the pre-filter member 4 can be prevented from being damaged more than necessary.

By the way, as shown in the figure, two sheet-like filter materials are used, and the two sheet-like filter materials are overlapped and folded into a mountain-like valley-like zigzag repeated folding structure. I do not care.
In this case, it is also conceivable to use two sheet-shaped filter materials made of the same material, that is, a sheet-shaped filter material composed of a material capable of collecting particles having a particle diameter of 1 μm to 1000 μm.

However, even if the same material is used, as a result of using them by overlapping them, dust having a particle diameter of less than 1 μm can be collected.
Further, with respect to the two sheet-like filter materials to be overlapped, the sheet-side filter material on the introduction side (upstream side) is made into a type that can collect dust with large particles, and the sheet-like filter material on the delivery side (downstream side) You may arrange | position a filter material to the type which can collect dust with a small particle | grain compared with the introduction side.

Next, the sheet-like filter material used for the main filter member 16 will be described.
The main filter member 16 is also folded in a state of a mountain-shaped valley-like zigzag repeated folding structure, and is configured in a substantially square shape.
The folding method is not limited in any way, and may be configured by a mechanical method or may be performed manually.
However, the length when the sheet-like filter material is folded into the state of the mountain-like valley-like zigzag repeated folding structure is set so as to be within the width direction of the frame body 3 that is framed in the rectangular shape like the pre-filter member 4. There must be.

However, as will be described later, the main filter member 16 does not adhere the folded surfaces to each other by the adhesive member 14. As described above, the prefilter member 4 installed on the upstream side of so-called air needs to improve the strength by bonding the folding surfaces to each other, but the main filter member 16 is installed on the downstream side of air. In addition, since it is protected by the pre-filter member 4, it is not necessary to bond the folded surfaces to improve the strength.
The main filter member 16 configured in a substantially square shape in the folded state is arranged in advance so that the zigzag repeated folding structure continues in the horizontal direction (left-right direction) and can be slightly expanded and contracted.

As described above, the main filter member 16 is provided with a plurality of continuous reinforcing ribs 17 on the front and back sides thereof, and the strength of the sheet-like filter material folded into a zigzag repeated folding structure is improved. Is contemplated.
As shown in the drawing, the main filter member 16 made of a sheet-like filter material is folded into a state in which the mountain-like valley-like zigzag repeated folding portions are in close contact with each other, and is formed in a substantially square shape. Will be.

By the way, since the folding surface of the main filter member 16 installed on the downstream side of the air is not bonded, it is easy to clean the so-called valley bottom portion 5 located at the back during cleaning maintenance described later. Thus, the efficiency of the cleaning maintenance can be improved, and the unnecessary damage to the main filter member 16 can be suppressed.

As described above, a predetermined space 15 is provided between the pre-filter member 4 installed on the upstream side of air and the main filter member 16 installed on the downstream side of air.
By providing this space 15, dust having a relatively small particle diameter that has passed through the pre-filter member 4 cannot pass through the main filter member 16 and remains in this space 15. That is, many dusts having a relatively small particle diameter are collected in a state where they adhere to the space 15 side surface of the main filter member 16.

As will be described later, during cleaning maintenance, the space 15 cannot pass through the main filter member 16, and collected dust accumulates. Then, the accumulated dust is punched in the lower frame member 2 constituting the frame body 3 together with the cleaning water, and is sent to the outside from the provided long hole drain hole 18.
That is, the space 15 provided between the pre-filter member 4 and the main filter member 16 and the long hole-shaped drain hole 18 are configured to communicate with each other.

Here, the pre-main integrated filter device 1 constructed according to the present invention must be replaced with a new one in a short period of time or must be maintained in a short period of time due to its use. There is no.
Conventionally, it has been necessary to replace it with a new one within several months, or it has been necessary to perform cleaning maintenance within several months.
Incidentally, the conventional filter device has an initial pressure loss of 190 Pascal, whereas the pre-main integrated filter device 1 according to the present invention has the structure of the pre-filter member 4 and the main filter member 16 described above. By adopting it, a low numerical value of 110 Pascals or less is realized.

Therefore, the pre-main integrated filter device 1 according to the present invention may be cleaned at least once a year. Moreover, it is designed to withstand three cleaning maintenance.
That is, when the pre-main integrated filter device 1 of the present invention is counted from the start of use, it can be used for a maximum of four years (12,000 hours in operation time) with one purchase.

When the pressure loss recovery after cleaning of the pre-main integrated filter device 1 according to the present invention is examined with test data, the pressure loss value measured after the second cleaning is 90 Pascals, and it is used for the next year. Resulted in a filter pressure loss value of 265 Pascals after dust loading.
After that, when the third (final) cleaning is performed, 93 Pascals are obtained after the cleaning, and the pressure loss value measured after the second cleaning is almost the same as 90 Pascals. Thus, it can be understood that the pre-main integrated filter device 1 of the present invention can sufficiently withstand a plurality of cleaning maintenance.

  In particular, unlike an office or a commercial store, in a hotel where air conditioning is operated for 24 hours, the operation time of the filter device is consumed faster than usual. Therefore, it can be said that the use of the pre-main integrated filter device 1 according to the present invention is extremely preferable.

  Furthermore, the hotel wants to reduce the number of subcontractor acceptances for security enhancement, and it is not very welcome for maintenance contractors to enter the building once every two months for replacement and cleaning of filter members. is there. From this point of view, the use of the pre-main integrated filter device 1 according to the present invention is very preferable.

Next, a cleaning system for the pre-main integrated filter device 1 according to the present invention will be described.
For example, the pre-main integrated filter device 1 used for a long period of one year is cleaned for maintenance.

First, as the cleaning system of the present invention, first, as understood from the drawing, the air cleaning machine 6 is charged.
In the air cleaner 6, the high-pressure air 7 is sent, for example, in the form of pulses toward the downstream surface of the main filter member 16 that collects the dust, and the dust 9 In other words, it is discharged into the so-called space 15.

Next, a so-called vacuum deaeration system is passed. That is, in order to improve the cleaning performance, the air remaining in the periphery of the dust 9 collected in the pre-filter member 4 and the main filter member 16 in the pre-main integrated filter device 1 is replaced with the cleaning water. Therefore, deaeration is performed in the vacuum deaeration tank 10.
Subsequently, ultrasonic cleaning is performed.

  In the past, air filter cleaning using ultrasonic waves has been mainly performed while moving by using one frequency. However, in the present invention, the pre-filter member 4 and the main filter member 16 are not moved, and waste, unevenness, muli In order to achieve cleaning without any problems, a system that switches three frequencies at high speed is introduced. That is, as understood from the figure, the ultrasonic oscillator 11 is switched, and different water flows are generated depending on three kinds of frequencies as shown in the figure, thereby performing efficient cleaning.

  Further, cleaning by the shower 12 is performed. The water flow of the shower 12 is generated by the high-pressure pump 13, and the water 9 of the shower 12 passes the inside of the pre-filter member 4 and the main filter member 16 from the upstream surface or downstream surface of the filter to wash out the dust 9.

  At that time, a plurality of valley fold bottom portions 5 which are the non-adhering portions of the prefilter member 4 described above serve as a washing water passage, and the washing water flows relatively easily, thereby enabling efficient washing. The main filter member 16 is not bonded to the folded surfaces at all, so that the prefilter member 4 and the main filter member 16 are not damaged.

  The dust closely contacting the surface of the main filter member 16 on the space 15 side is washed away and falls into the space 15, and they are smoothly sent out from the long hole-shaped drain hole 18.

Then, the long hole-shaped drain hole 18 is sealed with a seal, and is closed and closed until the next cleaning maintenance.
The seal can be checked for the number of times of cleaning, and the number of times of cleaning can be easily grasped by this check.

BRIEF DESCRIPTION OF THE DRAWINGS It is structure explanatory drawing (the 1) of the pre main integrated filter apparatus which concerns on this invention. FIG. 3 is a configuration explanatory view (No. 2) of the pre-main integrated filter device according to the present invention. FIG. 6 is a configuration explanatory view (No. 3) of the pre-main integrated filter device according to the present invention. FIG. 4 is a configuration explanatory view (No. 1) of a pre-main integrated filter member according to the present invention. FIG. 6 is a configuration explanatory view (No. 2) of the pre-main integrated filter member according to the present invention. FIG. 6 is a configuration explanatory view (No. 3) of the pre-main integrated filter member according to the present invention. It is the structure explanatory view (the 1) explaining the composition of an elongated hole drain hole. It is composition explanatory drawing (the 2) explaining the structure of a long hole-shaped water drain hole. It is composition explanatory drawing explaining the state of the reinforcing rib provided in the main filter member. It is explanatory drawing (the 1) explaining the washing | cleaning system which concerns on this invention. It is explanatory drawing (the 2) explaining the washing | cleaning system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pre-main filter apparatus 2 Frame member 3 Frame body 4 Pre filter member 5 Valley-shaped bottom part 6 Air cleaner 7 High pressure air 8 Electric generator 9 Dust 11 Ultrasonic oscillator 12 Shower 13 High pressure pump 14 Adhesive member 15 Space 16 Main filter Member 17 Reinforcement rib 18 Long hole drain hole

Claims (4)

Forming a frame body having an opening penetrating the front and back surfaces by framing a frame member having a predetermined width into a substantially rectangular shape;
In the opening of the frame body, a prefilter member constructed by folding the sheet-like filter material into a mountain-like valley-like zigzag repetitive folding structure with a width narrower than the width of the frame body on the upstream side which is the surface side Attach the zigzag repeated folding structure so that the direction is horizontal,
A predetermined space is opened from the prefilter member on the downstream side which is the back surface side, the sheet-like filter material has a width narrower than the width of the prefilter member, and together with the prefilter member and the predetermined space, the frame A main filter member configured to be folded into a mountain-shaped valley-like zigzag repeated folding structure with a width that fits within the width of the body is attached so that the direction of the zigzag repeated folding structure is a horizontal direction,
The prefilter member is directed in the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, spaced on both the front side and the back side of the sheet-like filter material, and in the vertical direction of the prefilter member, The portion facing the adhesive member is formed by forming a non-adhesive member portion on the bottom of the valley,
The main filter member faces the zigzag direction of the mountain-like valley-like zigzag repeated folding structure, and is spaced on both the front side and the back side of the sheet-like filter material and in the vertical direction of the main filter member. A plurality of reinforcing ribs are formed,
The lower frame member constituting the frame body is provided with a long hole-like drainage hole communicating with a space provided between the pre-filter member and the main filter member.
A pre-main integrated filter device.
The pre-filter member uses a filter material that collects dust having a particle diameter of 1 μm to 1000 μm, and the main filter member uses a filter material that collects dust having a particle diameter of 0.3 μm to 50 μm. did,
2. The pre-main integrated filter device according to claim 1, wherein:
The filter member is made of a synthetic resin material,
3. The pre-main integrated filter device according to claim 1, wherein the pre-main integrated filter device.
The pre-filter member is formed by overlapping the sheet-like filter material twice and bending it into a mountain-like valley-like zigzag repeated folding structure.
4. The pre-main integrated filter device according to claim 1, 2, or 3.

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