JP2014005956A - Filter unit for air blower suction port - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter unit for an air blower suction port that is made space-saving and low noise, and is excellent in maintainability.SOLUTION: A filter unit for an air blower suction port includes a suction box 12 having a hollow box shape, and a plurality of filter plates 13 having a vertical zigzag shape provided so as to partition the inner space of the suction box 12 into upper and lower parts. The lower space of the suction box 12 is connected to a suction port 10 of an air blower 5 by the filter plate 13, and the upper space thereof is provided with a ventilation port 34 by the filter plate 13. The ventilation port 34 is provided at the left and right side surfaces and rear surface of the suction box 12 in a state of viewing a boiler 1 from a front surface. The filter 13 is detachable from the back of the suction box 12.

Description

  The present invention relates to a filter unit installed at a suction port of a blower.

  In recent years, package boilers have been desired to save space and reduce noise while increasing capacity. Therefore, the filter unit installed at the suction port of the blower must be compact and can secure a necessary filter area, and can effectively prevent noise from the blower. Also, maintenance such as filter replacement should be easy.

  The problem to be solved by the present invention is to provide a blower inlet filter unit that saves space, can reduce noise, and is excellent in maintainability.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is provided with a hollow box-like suction box and an internal space of the suction box in the vertical direction and in a vertical zigzag shape. One or a plurality of filter plates, and the suction box has a lower space connected to the air inlet of the blower than the filter plate, while the upper space communicates with the outside at a surface other than the upper surface than the filter plate, The filter plate is a blower inlet filter unit that is detachably provided on the suction box.

  According to the first aspect of the present invention, since the filter plate is provided in the upper and lower zigzag shape in the suction box, a necessary filter area can be ensured while being compact. Moreover, since at least the upper surface of the suction box is closed, noise from the blower can be prevented. Furthermore, since the filter plate is detachably provided on the suction box, filter replacement is easy.

  The invention according to claim 2 is provided at a suction port of a blower at an upper part of a boiler installed in multiple cans on the left and right sides, and the suction box is covered with a plate material on the upper surface of the suction box when viewed from the front. In addition, vents are provided only on the left and right side surfaces and the rear surface of the upper space from the filter plate, and the inner surface of the suction box communicates with the connection port to the suction port of the blower and the inside and outside of the suction box. A sound absorbing material is provided except for a portion that becomes a vent, and the substantially rectangular filter plate is detachably inserted into the suction box from the rear so as to form a continuous mountain shape in a longitudinal section in a front view. The blower inlet filter unit according to claim 1, wherein the blower inlet filter unit is provided.

  According to the second aspect of the present invention, the suction box is opened only on the left and right side surfaces and the rear surface when the boiler is viewed from the front, and the sound absorbing material is provided on the inner surface of the suction box. It is possible to prevent the sound of the blower from leaking to the side. In addition, in the case of boilers installed in multiple cans on the left and right, there are other boilers on the left and right, so the maintainability of the upper part of the boiler tends to deteriorate, but by making the filter plate detachable from the rear, it is easy to maintain Is good.

  According to a third aspect of the present invention, in the suction box, a mounting hole for the filter plate is formed in the upper part of the rear surface, and at a position corresponding to the upper and lower ends of the mounting hole, a cross-section is substantially omitted along the front-rear direction. A U-shaped mounting rail is provided, and the upper and lower mounting rails are connected by a mounting rail having a substantially U-shaped cross section provided on the front surface of the suction box, and are inserted from the mounting holes. The blower inlet filter unit according to claim 2, wherein the filter plate is guided and held by the mounting rails.

  According to the third aspect of the present invention, since the filter plate inserted from the mounting hole on the rear surface of the suction box is guided and held by the mounting rail, the filter plate can be easily attached / detached and held.

  Furthermore, the invention described in claim 4 is the blower inlet filter unit according to claim 2 or 3, wherein a net member is provided in the vent.

  According to the fourth aspect of the present invention, by providing the mesh member in the vent hole, foreign matter can be prevented from entering the suction box, and the blower inlet filter unit can be protected.

  According to the present invention, it is possible to realize a blower inlet filter unit that can save space, reduce noise, and has excellent maintainability.

It is a schematic plan view which shows the state in which the boiler which has the air blower inlet filter unit of this invention was installed in many cans on either side. It is a schematic perspective view which shows one Example of the air blower inlet filter unit of this invention, and shows the state attached to the air blower, and has decomposed | disassembled and shown some components. It is a longitudinal cross-sectional view of the upper part of the air blower suction port filter unit of FIG. 2, and has shown the state seen from back. It is IV-IV sectional drawing in FIG. It is VV sectional drawing in FIG.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. Here, an example applied to a blower at the top of a boiler that is installed in multiple cans on the left and right will be described, but the blower inlet filter unit of the present invention is installed other than the blower for a boiler used in a single can and the top of the boiler. The present invention is also applicable to a blower that is used other than a boiler or a boiler.

  FIG. 1 is a schematic plan view of a boiler 1 installed in multiple cans on the left and right. As shown in this figure, each boiler 1 includes a can body 3 as a boiler body on a substantially rectangular base 2, a blower 5 for supplying combustion air to the can body 3 through a duct 4, and the can A steam pipe 6 for leading steam from the body 3 via a steam separator, a flue 7 for leading exhaust gas from the can 3 via an economizer, and the like are provided. Moreover, the control part 8 is arrange | positioned in the front surface of the boiler 1, and this control part 8 can be opened and closed with a door.

  The blower 5 is provided in the upper part and the rear part of the boiler 1. At this time, the blower 5 is disposed with the motor 9 facing forward, while the suction port 10 is disposed backward. And the air inlet 10 of the present invention is provided in the air inlet 10 of the air fan 5.

  FIG. 2 is a schematic perspective view showing an embodiment of the blower inlet filter unit 11 of the present invention, showing a state where the blower 5 is attached to the blower 5 and disassembling some components. Moreover, FIG. 3 is a longitudinal cross-sectional view of the upper part of the blower inlet filter unit 11 of the present embodiment, and shows a state seen from the rear. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line V-V in FIG.

  The blower suction port filter unit 11 of the present embodiment includes a suction box 12 having a hollow box shape, and a plurality of filter plates 13 that partition the internal space of the suction box 12 up and down and are provided in an up and down zigzag shape. The lower space of the suction box 12 is connected to the suction port 10 of the blower 5 from the filter plate 13, while the upper space is communicated to the outside from the filter plate 13 on a surface other than the upper surface.

  The suction box 12 is composed of a substantially rectangular hollow box. A round hole as a connection port 15 to the suction port 10 of the blower 5 is formed in a lower portion of a front wall 14 of the suction box 12 (a surface on the front side when the boiler 1 is viewed from the front). The connection port 15 of the suction box 12 faces the suction port 10 of the blower 5 and is airtightly connected through an appropriate annular adapter 16 (FIG. 4). Specifically, the blower 5 is provided with mounting bolts 17 protruding rearward around the suction port 10, so that the mounting bolts 17 are passed through the adapter 16 and the front wall 14 of the suction box 12. The nut 18 may be tightened from the inside of the suction box 12. In order to perform such connection work and maintenance, a substantially rectangular inspection port 20 is provided in the lower part of the rear wall 19 of the suction box 12, and this inspection port 20 can be opened and closed by an inspection lid 21. The

  The suction box 12 is provided with a filter plate 13 above the connection port 15 and the inspection port 20. In the present embodiment, a plurality of substantially rectangular filter plates 13 are inserted and held from the rear to the front of the suction box 12. Thereby, each filter board 13 is arrange | positioned at the suction box 12 so that it may become a continuous mountain shape in a front view longitudinal cross section. Specifically, in this embodiment, five filter plates 13 are provided so that two and a half of the same shape are formed from the right side in the rear view shown in FIG.

  As shown in FIG. 2, five elongated mounting holes 22 for inserting the filter plate 13 are formed in the rear wall 19 of the suction box 12. These mounting holes 22 are formed to be inclined so that the filter plate 13 is arranged in a continuous mountain shape. That is, in FIG. 2, the rightmost mounting hole 22 is inclined to the left as it goes upward, and from the vicinity of its upper end, the second mounting hole 22 is inclined to the left as it goes downward. The third mounting hole 22 is formed in an up and down zigzag in order so that the third mounting hole 22 is inclined to the left side as it goes upward from the vicinity of the lower end thereof.

  At positions corresponding to the upper and lower ends of each mounting hole 22, mounting rails 23, 23 are provided toward the rear. Each mounting rail 23 is provided along the front-rear direction so as to bridge the front wall 14 and the rear wall 19 of the suction box 12. Each mounting rail 23 is formed from a substantially U-shaped material in cross section, and the groove is disposed toward the inner side in the longitudinal direction of each mounting hole 22. That is, the mounting rail 23 is provided in the suction box 12 so that the upper and lower sides of the filter plate 13 inserted rearward from the mounting hole 22 fit into the grooves of the mounting rails 23 and 23.

  Further, a mounting rail 24 having a substantially U-shaped cross section is provided on the front wall 14 of the suction box 12 so as to connect the upper and lower mounting rails 23, 23 to each other. The mounting rail 24 of the front wall 14 is disposed at a position facing the mounting hole 22 of the rear wall 19 in the front-rear direction, and the groove is disposed rearward so as to be continuous with the grooves of the upper and lower mounting rails 23, 23. Accordingly, the filter plate 13 guided and inserted into the upper and lower mounting rails 23, 23 from the mounting hole 22 is held with its front end portion fitted in the groove of the mounting rail 24 of the front wall 14.

  The plurality of filter plates 13 are arranged in a continuous mountain shape as shown in FIG. 3, but adjacent mounting rails 23 so that air does not pass through the gaps between the filter plates 13, 13 at the top or trough thereof. , 23 are connected to each other by an elongated plate 25 in the front-rear direction, and the gap is closed. Similarly, in FIG. 3, the mounting rail 23 that holds the lower end of the rightmost filter plate 13 and the side wall 26 of the suction box 12, and the mounting that holds the upper end of the leftmost filter plate 13. The rail 23 and the side wall 27 of the suction box 12 are also connected by a plate member 25 extending in the longitudinal direction, and the gap is closed.

  The filter plate 13 includes a substantially rectangular frame portion 28 and a filter 29 stretched in the frame portion 28. The inside of the frame portion 28 is partitioned by an appropriate reinforcing material 30.

  Such a filter plate 13 is inserted toward the front from the rear of the suction box 12 through the mounting hole 22. At that time, the upper end portion of the filter plate 13 is held by the upper mounting rail 23 and the lower end portion is held by the lower mounting rail 23. When the filter plate 13 is fully inserted forward, the front end portion of the filter plate 13 is held by the front mounting rail 24. In this way, the filter plate 13 is held at the mounting rails 23, 23, and 24 at the upper and lower ends and the front end portions, and is held at the mounting holes 22 at the rear end portions. In this state (that is, the front end portion of the filter plate 13 is fitted in the groove of the mounting rail 24 of the front wall 14), the rear end portion of the filter plate 13 slightly protrudes rearward from the rear wall 19 of the suction box 12. Therefore, it is easy to remove the filter plate 13 from the suction box 12.

  After inserting and holding the filter plate 13 from each mounting hole 22 into the suction box 12, as shown in FIG. 2, a plate-like shape is formed so as to cover each mounting hole 22 of the suction box 12 and the rear end portion of the filter plate 13. A lid member 32 is detachably provided via a sponge-like packing 31.

  In this way, the suction box 12 is partitioned vertically by the filter plate 13, but the space above the filter plate 13 (above the upper mounting rail 23 in this embodiment) is opened at a surface other than the upper surface. . In other words, the upper surface of the suction box 12 is closed by the upper plate 33, whereas in the present embodiment, the suction box 12 is a vent hole 34 that is open at the rear and left and right side surfaces. In the present embodiment, the vent 34 is stretched with a net. Thereby, foreign matters, such as a volt | bolt, do not enter into the suction box 12 accidentally, and failure of the air blower inlet filter unit 11 can be prevented.

  A sound absorbing material 35 is provided on the inner surface of the suction box 12 except for a connection port 15 to the suction port 10 of the blower 5 and a portion serving as a ventilation port 34 that communicates the inside and outside of the suction box 12. More specifically, a sound absorbing material 35 is provided on the front wall 14 of the suction box 12 except for a connection port 15 to the suction port 10 of the blower 5 and a place where each mounting rail 24 is provided. Further, sound absorbing materials 35 are provided on the left and right and upper and lower wall surfaces of the suction box 12 except for the portions that become the vent holes 34. Furthermore, a sound absorbing material 35 is provided on the rear wall 19 of the suction box 12 except for the location that becomes the vent 34 and the location where the mounting hole 22 is provided. At this time, the sound absorbing material 35 is also provided inside the inspection lid 21 (on the suction box 12 side) below the suction box 12, and the sponge-like packing 31 inside the lid member 32 above the suction box 12 is used as the sound absorbing material. Also works.

  If the blower suction port filter unit 11 is provided in the suction port 10 of the blower 5, as shown in FIG. 4, outside air is taken in from the left and right and rear vents 34, and the air always passes through the filter 29 of the filter plate 13. Through the suction port 10 of the blower 5. By providing the filter plate 13 in a vertical zigzag shape in the suction box 12, it is possible to secure a necessary filter area while being compact.

  Further, when the boiler 1 is viewed from the front, the suction box 12 is provided with the vent holes 34 only on the left and right side surfaces and the rear surface, and the sound absorbing material 35 is provided on the inner surface of the suction box 12. The sound of the blower 5 can be prevented from leaking to the front side. Furthermore, by closing the upper surface of the suction box 12 with the upper plate 33, it is possible to place a foot during maintenance of the upper part of the boiler 1.

  Further, since the filter plate 13 is inserted into the suction box 12 and is detachable, the filter plate 13 can be easily replaced. Moreover, since the blower inlet filter unit 11 is disposed at the rear of the boiler 1 and the filter plate 13 can be replaced from the rear, the filter plate 13 can be easily replaced.

  The blower inlet filter unit 11 of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate. For example, the arrangement and number of filter plates 13 provided in the upper and lower zigzags in the suction box 12 can be changed as appropriate. Moreover, in the said Example, although it was set as the structure which inserts the filter board 13 in each of the several mounting hole 22 arrange | positioned at a continuous mountain shape, the mounting hole 22 continuous in a continuous mountain shape is formed, and the one continuous to a continuous mountain shape is formed. A single filter plate 13 may be detachably provided.

DESCRIPTION OF SYMBOLS 1 Boiler 5 Air blower 10 (Blower) suction port 11 Blower suction port filter unit 12 Suction box 13 Filter board 14 Front wall (Suction box) 15 Connection port 19 (Suction box) Rear wall 22 Mounting hole 23 (Upper and lower) Mounting rail 24 (front) mounting rail 31 Sponge packing 32 Cover material 33 Upper plate (plate material on the upper surface of the suction box)
34 Ventilation holes 35 Sound absorbing material

Claims (4)

A hollow box-like suction box, and one or a plurality of filter plates provided in a vertical zigzag shape while partitioning the internal space of the suction box up and down,
The suction box has a lower space connected to the air inlet of the blower than the filter plate, while the upper space communicates with the outside at a surface other than the upper surface than the filter plate,
The blower inlet filter unit, wherein the filter plate is detachably provided on the suction box. It is provided at the inlet of the blower at the top of the boiler where multiple cans are installed on the left and right,
In the state where the boiler is viewed from the front, the suction box is closed at the upper surface with a plate material, and vent holes are provided only on the left and right side surfaces and the rear surface of the upper space from the filter plate,
On the inner surface of the suction box, a sound absorbing material is provided, except for a connection port to the suction port of the blower and a portion serving as the vent hole that communicates the inside and outside of the suction box,
The blower suction port according to claim 1, wherein the suction box is provided with the substantially rectangular filter plate detachably inserted from the rear so that the suction box has a continuous mountain shape in a longitudinal cross section when viewed from the front. Filter unit. The suction box is provided with a mounting hole for the filter plate on the upper rear surface, and mounting rails having a substantially U-shaped cross section along the front-rear direction are provided at positions corresponding to the upper and lower ends of the mounting hole. The upper and lower mounting rails are connected by mounting rails having a substantially U-shaped cross section provided on the front surface of the suction box,
The blower inlet filter unit according to claim 2, wherein the filter plate inserted from the mounting hole is guided and held by the mounting rails. The blower inlet filter unit according to claim 2 or 3, wherein a net member is provided in the vent hole.

Images