JPS6238900A - Side suction type blower - Google Patents

Abstract

PURPOSE:To make it possible to take out part of air quantity by arranging a guide plate in a deep place of a suction box protruding from a side of an introduction passage opened to a suction port and making it possible to open and close the deep place by means of the guide plate. CONSTITUTION:At a suction port 3 is arranged an introduction passage 4 with one end open in the impeller axis direction to which is communicated perpendicularly one end of a suction box 6 having an air inlet 5 on the other end. In a deep place 7 of the suction box 6 is arranged a guide plate 8 for preventing air from swirling. The guide plate 8 is rotatably supported so that it can open and close the deep place 7. Accordingly, when the guide plate 8 is closed, almost 100% of air is taken out and when opened, swirl flow is produced within the introduction passage 4 so that part of air quantity can be taken out.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a side suction type blower.

[Background of prior art and invention]

Needless to say, this type of conventional side-suction type blower takes in air through the suction box from the side perpendicular to the axis of the impeller, and directs the air flow in the direction of the axis of the impeller just before the impeller. It has a structure that refracts the air, and since the refracted air flow causes swirling due to the rotation of the impeller, reducing the performance of the blower, the airflow is prevented from swirling and is sucked in in the axial direction of the impeller. A guide plate is interposed and fixed inside the suction box so that 100% air volume is always obtained.However, even if there is a request for partial air volume extraction of less than 100%, the guide plate The problem is that this cannot be done because it is fixed.

[Purpose of the invention]

An object of the present invention is to make the guide plate movable at 17 to generate a swirling flow, thereby making it possible to take out a partial amount of air.

[Structure of the invention]

The present invention to solve the conventional problem is to provide a casing with:
An axial guide passage with one end open is provided at the suction port of the impeller in the casing, and the other end of the guide passage is orthogonally communicated with the other end of the suction box having an air intake port at one end. In the blower of the type, a guide plate is interposed parallel to the axial direction of the guide passage in a deep part of the suction box that protrudes to the side of the guide passage by intersecting the guide passage. The gist of this invention is a side suction type blower characterized by being movably provided so that it can be opened and closed.

〔Example〕

1 is a casing; 2 is an impeller inserted into the casing; the casing 1 is provided with a guide passage 4 extending in the axial direction of the impeller with one end open at the central suction port 3 of the impeller 2; The other end of a suction box 6 having an air intake port 5 at one end is orthogonally communicated with the other end of the guide passage 4, and this orthogonal communication allows a deep part of the suction box 6 that protrudes to the side of the guide passage 4 to be connected to the other end. In a side suction type blower in which a guide plate 8 for preventing swirling of air is interposed in parallel with the axial direction of the guide passage, the guide plate 8 is supported so as to be movable together so that the deep part 7 can be opened and closed. This is what I did.

The direction of rotation of the guide plate 8 may be either rotatably supported by a vertical shaft 9 in FIG. 2 or rotatably supported by a horizontal shaft 10. In short, it is sufficient that the deep part 7 can be opened and closed.Although the movement of the guide plate 8 is not shown, the guide plate is provided with a handle that protrudes outward from the suction box, and is operated by the handle B. .

[For production]

When the guide plate 8 is closed, the air entering from the air intake port 5 is prevented from circulating to the deep part 7 by the guide plate 8, so it is guided into the guide passage 4 without resistance, and a swirling flow is created in the guide passage 4. 100% of the original air volume of the blower can be taken out without causing any noise.

Further, when the guide plate 8 is rotated and the deep part 7 is fully opened, air circulates in the deep part 7, so a swirling flow is generated in the guide passage 4, and a partial air volume is extracted.

〔Effect of the invention〕

In short, according to the present invention, when the deep part of the suction box is closed from the guide plate Iζ, 100% of the air volume, which is the original performance of the blower, can be taken out without generating swirling flow, and the deep part is opened by the guide plate. In this state, a swirling flow is generated to reduce the performance of the blower, thereby making it possible to take out a partial air volume.This effect can be achieved with an extremely simple structure in which a guide plate is provided in a movable manner. It has excellent features such as:

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view, and FIG. 2 is an upper sectional view of the same. 1...Casing, 2. Impeller, 3. Center suction port. 4. Guidance passage, 5. Air intake port, 6. Suction box, 7
...Deep part, 8...Information board. Patent applicant: Japan Machinery Engineering Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] The casing is provided with an axial guide passage with one end open at the suction port of the impeller in the casing, and the other end of the guide passage is orthogonally connected to the other end of the suction box having an air intake port at one end. In a blower of a type in which a guide plate is interposed parallel to the axial direction of the guide passage deep in a suction box that communicates with the guide passages and protrudes to the side of the guide passage by intersecting the guide passages, the guide plate is A side suction type blower characterized in that the deep part is movably provided so as to be able to open and close.