JP7076122B2 - Blower drum pole - Google Patents

Description

The present invention relates to a drum pole of a blower (referred to as a prism, a guard, or a casing), and more particularly to a drum pole of a blower having a box shape mounted in the center of a housing and in the vertical direction (vertical direction).

There is an invention of this kind of prism disclosed in Japanese Patent Application Laid-Open No. 2007-232102 (Reference 1.). This document 1. The structure of the housing (wind cylinder) is a structure in which a horizontal stile that is laid slightly below the center and a prism that penetrates the ceiling (upper part) of the housing are attached. It is a square box. Therefore, on the sending side in the wind flow direction, a vortex is likely to be generated near the inner surface thereof, and the generation of this vortex hinders the smooth flow of the wind. Further, on the receiving side in the wind flow direction, a collision with the wind occurs on the front wall surface and the receiving side wall surface, which causes noise generation and hinders the smooth flow of the wind. Further, if the prism is not connected to the upper and lower sides of the housing, it is conceivable that the wind flow on the upper and lower sides is likely to be divided, and vortices and / or noise are likely to be generated. Further, there is an invention disclosed in Japanese Patent Application Laid-Open No. 2015-169132 (Reference 2.). This document 2. The structure of the above-mentioned document 1. By providing a cooling means in the motor boss portion of the above structure, for example, a drive portion having heat, such as a pulley, a belt, and a boss portion, is air-cooled. Therefore, this document 2. Also in Reference 1. It is thought that they have the same problems as.

Japanese Unexamined Patent Publication No. 2007-232102 JP-A-2015-169132

As mentioned above, the conventional document 1. And reference 2. In (the prior art), as described above, a vortex is likely to be generated on the sending side in the wind flow direction and near the inner surface, which hinders the smooth flow of the wind. Further, on the receiving side in the wind flow direction, and on the front wall surface and the receiving side wall surface, a collision with the wind occurs, which causes noise generation and hinders the smooth flow of the wind.

In view of the above, the present invention reduces or eliminates the generation of vortices on the sending side of the prism in the wind flow direction and on the rear side of the sending side to ensure a smooth flow of wind. Further, on the receiving side in the wind flow direction, and on the front wall surface and the receiving side wall surface, collision with the wind, that is, a cause of noise generation is avoided, and a smooth flow of the wind is ensured. Claims 1 to 9 are proposed with the intention of achieving this purpose.

The invention of claim 1 comprises a fan, a motor for the fan, a first pulley provided on the rotation shaft of the fan, a second pulley provided on the output shaft of the motor, and a first pulley and a second pulley. In a drum pole with a square cross section and a box-shaped prism of a blower equipped with a belt suspended from
The rotation axis of the fan of the drum pole is provided at the center of the drum pole in the vertical direction .
On the upper and lower sides of the drum pole , an upper chamber and a lower chamber are provided with an intermediate chamber in the middle part of the drum pole sandwiched between them.
The upper chamber located above the intermediate chamber is provided with a fin piece (5) having a curved curve that protrudes from the wind sending side toward the receiving side and bulges upstream in the duct flow direction. The piece (5) protrudes from the wall surface (200b) on the receiving side, the lower end of the fin piece (5) is bottomed , and the lower end of the upper chamber connected to the intermediate chamber is bottomless .
The lower chamber located below the intermediate chamber is provided with a fin piece (6) having a curved curve that protrudes from the wind sending side toward the receiving side and bulges upstream in the duct flow direction. The piece (6) protrudes from the wall surface (201b) on the receiving side, the upper end of the fin piece (6) is bottomed , and the upper end of the lower chamber connected to the intermediate chamber is bottomless .
It is a drum pole of a blower characterized by that.

According to claim 1, the upper and lower chambers of the prism are provided with fin pieces protruding in the direction of rotation of the fan, and the wind of the fan flows following the front surface of the prism, and the wind of the prism is sent out in the flow direction. On the side, on the rear side of this sending side, the generation of vortices can be reduced or eliminated, and a smooth flow of wind can be ensured. In addition, a fin piece for wind guidance is formed on the receiving side to avoid noise generation, and the efficiency of wind blowing can be improved through a duct.

In the invention of claim 2, the fin pieces (5) and (6) are formed upstream in the flow direction of the duct provided with the blower, and the fin pieces (5) and (6) are the thin width of the prism. Along with forming a bulge toward the upstream from (2-1) , the wind receiving side of the fan is high and the sending side is low, and the orthogonal end faces (crossing end faces) of the fin pieces (5) and (6) are formed. The drum pole of the blower according to claim 1, wherein the shapes are formed in a symmetrical relationship.

In claim 2, it is possible to propose a drum pole having an excellent structure that reduces or eliminates the generation of vortices on the rear side of the transmission side. Others are in accordance with claim 1 described above.

According to the third aspect of the present invention, the U-shape constituting the box-shaped base end of the upper and lower chambers of the prism is a drum pole of a blower formed downstream in the flow direction of the duct.

In the invention of claim 4, the fin pieces (5) and (6) are extended from the sending side to the receiving side of the thin box portion (2-1) of the upper and lower chambers of the prism, and the fan. It is a drum pole of a blower that converges toward the receiving side in the direction of rotation.

The invention of claim 5 is a drum pole of a blower in which the extension length dimension of the fin pieces (5) and (6) is the same for both the upper and lower chambers.

In claims 3 to 5, it is possible to propose the optimum structure of a drum pole (prism) for forming a fin piece. Others are in accordance with claim 1 described above.

In the invention of claim 6, the center of the prism is a drum pole of a blower that forms a flat intermediate chamber that divides the upper and lower chambers.

In claim 6, it is possible to propose a structure of a drum pole (prism) that can play a role and strength as a prism. Others are in accordance with claim 1 described above.

The invention of claim 7 is a drum pole of a blower in which an annular hole is formed in an intermediate chamber of a prism, a fan boss is provided in the hole, and spokes of a plurality of blades are attached to a large number of holes provided in the boss. be.

In claim 7, it is possible to propose a structure of a drum pole (square pillar) that is most suitable for mounting a fan. Others are in accordance with claim 6 described above.

The invention of claim 8 is a drum pole of a blower in which spokes of a plurality of blades are movably attached to a large number of holes of a boss.

In claim 8, the optimum fan and blade structure for the blower can be proposed. Others are in accordance with claim 7 described above.

The invention of claim 9 is a drum pole of a blower in which an opening for taking in outside air is formed at the bottom of the housing and at a position where a lower chamber is attached.

In claim 9, the optimum housing structure for the blower can be proposed. Others are in accordance with claim 1 described above.

Front view showing a preferable example of a prism Side view of FIG. Rear view of FIG. Top view of FIG. Bottom view of FIG. AA end view of FIG. BB end view of FIG. CC end view of FIG. DD end view of FIG. Enlarged side view of the prism deployed on the blower Rear view of the prism deployed on the blower Bottom view of the blower An exploded perspective view of a part of the fan missing Perspective view showing the relationship between the fan boss and the spokes of the blades An exploded perspective view showing the relationship between the fan boss and the spokes of the blades. A bird's-eye view of the spokes of the blades A diagram schematically showing a state in which a vortex is generated and / or a collision occurs in a conventional prism.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a blower provided between ducts (A1) and (A2), and the blower 1 is shown in FIGS. 7 and 8. The cylindrical housing 100, the fan 101 supported in the housing 100, and the motor 102 for the fan provided on the outer peripheral surface ceiling portion (upper part 100a) of the housing 100. , A first pulley (not shown) in a prism, which will be described later, provided on the rotation shaft (not shown) of the fan 101, and a second pulley (not shown) provided on the output shaft (not shown) of the motor 102. Between the box body 103 having the outside air introduction slit 103a provided in the upper portion 100a of the housing 100 accommodating the second pulley (not shown) and the first and second pulleys. It is equipped with a suspended belt (not shown). An opening 104 such as a slit, a hole, or a punching hole for introducing outside air is provided at the bottom of the outer peripheral surface (lower part 100b) of the housing 100 and at a position where a prism is provided. The opening 104 is connected to a prism described later. That is, outside air is introduced into the prism from the opening 104 to cool the first and second pulleys, belts, rotating shafts, and the like.

Therefore, the structure is such that the belt moves by driving the motor 102 and rotating the second pulley . By the movement of this belt, the rotation axis rotates, the fan 101 rotates counterclockwise X when viewed from the front, and the wind flows from the duct (A1) to (A2). That is, in FIG. 7, the flow flows from (a 1) to (a 2) in the direction of the arrow. In this case, in the conventional example shown in FIG. 11, in the case of a rectangular prism, the sending side of the prism in the wind flow direction is near the back surface direction of the sending side (c1) wall surface (c2) (c3). ), As described above, due to collision with the front surface (c) on the receiving side (c) / receiving side wall surface (c5), etc. Problems occur.

The means of the present invention reduces or eliminates the vortex generation (d) and / or reduces or eliminates the collision with the front surface (c4) / wall surface (c5) and the like, and smooth flow of wind. Secure (air flow). In addition, this makes it possible to improve the efficiency of ventilation of air in ducts and the like while preventing noise.

An example of the means will be described below.

Reference numeral 2 is a prism (drum pole), which is shown in detail in FIGS. 1 to 3, and is an example of the end portion 100c of the housing 100 (the end portion in the air flow direction, which is an example). It is a box shape provided in the upper and lower parts 100a and 100b directions and has a rectangular shape when viewed from the crossing end, and has upper and lower surfaces 2a and 2b having the same shape as the inner ring of the housing 100, and the base end of the prism 2 is crossed. It is U-shaped when viewed from the end. Further, the intermediate chamber 202 exhibits a substantially square shape when viewed from the cross-sectional end surface. Then, in the prism 2, the rotation shaft is arranged at the center of the prism 2, and a part of the rotation shaft (thin width 2) is sandwiched between the rotation shaft and the thin and flat intermediate chamber 202. Border between -1 and 2-2 in thickness) The upper and lower chambers 200 and 201 of the bottomed 200a and 201a are partitioned. The upper and lower chambers 200 and 201 (the same applies to the pair of fin pieces described later) have a symmetrical relationship. The bottomed 200a and 201a (the bottomed 201a can be said to be the ceiling surface of the lower chamber 201) are in a confrontational relationship.

Further, the upper and lower chambers 200 and 201 have curved curves that protrude toward the rotation direction X of the fan and bulge on the upstream side in the flow direction of the duct (see FIGS. 6-1 and 6-4). ) It has fin pieces 5 and 6. The detailed shapes of the fin pieces 5 and 6 are shown in FIGS. 4 to 6-4, and the structure of the fin pieces 5 and 6 (in the example of the same structure, described on one side) will be described as a fin piece. Reference numeral 5 is formed upstream of the flow direction (a1) → (b2) of the ducts (A1) and (A2), and the fin piece 5 is directed upstream from the thin width 2-1 of the prism 2. Therefore, it is formed to bulge from the box portions of the upper and lower chambers 200 and 201 of the prism 2, the receiving side 2c in the rotation direction of the fan, which will be described later, is high, the sending side 2d is low, and the fin pieces 5 are orthogonal to each other. Form the end face morphology (at the same position in the transverse direction) symmetrically. Further, the end faces 5a and 6a (beak type) of the fin pieces 5 and 6 project to the receiving side from the wall surfaces 200b and 201b of the upper and lower chambers 200 and 201 of the prism 2. The protruding part has a beak shape when viewed from the end. Therefore, as shown in FIGS. 6-1 and 6-4, the incoming wind flows so as to be guided to the end faces 5a and 6a without being disturbed by the wall surfaces 200b and 201b, and the arrows E and E1 As shown by, the flow becomes gentle and the vortex generation (d) is extremely small (it can be said that there is no vortex generation region). Belts (not shown) are installed in the spaces of the upper and lower chambers 200 and 201 and the intermediate chamber 202. Further, a first pulley and a rotation shaft are provided in the intermediate chamber 202, and a boss described later is provided on the outside thereof. By setting the extended length dimension L of the fin pieces 5 and 6 to be the same for the upper and lower chambers 200 and 201, the features of the present invention can be exhibited.

The detailed shape of the fan 101 is shown in FIGS. 10-1 to 10-4, and the pair of bosses 101-1 having the mounting holes 101-1a fixed to the rotating shaft and the respective bosses 101-1 are shown. It is composed of a plurality of recesses 101-2 for spokes provided in the above, and a plurality of blades 101-4 provided with a plurality of spokes 101-3 inserted into the recesses 101-2. Therefore, in the present invention, since the angle of the blade 101-4 can be freely changed, the wind flow speed can be adjusted and the noise can be adjusted. The matching of the recess 101-2 and the recess 101-2 results in a hole 101-2a for spokes (see FIG. 10-1). Further, although not shown, the fan 101 can adopt each structure such as a conventional integrated structure.

Each of the above-described embodiments is a description of a preferred example of the present invention. Therefore, the present invention is not limited to the above-described embodiments, and a structure in which a part of the configuration is changed within the scope of the present invention, a structure capable of achieving the same features and effects, and the like are within the scope of the present invention. Is.

1 Blower 100 Housing 100a Upper 100b Lower 100c End 102 Motor 103 Box 103a Slit 104 Opening 2 Square pillar 2a Top 2b Bottom 2c Receiving side 2d Sending side 200 Upper room 200a Bottom 200b Wall surface 201 Lower room 201a 202 Intermediate chamber 2-1 Thin width 2-2 Thick width 5 Fin piece 5a End face 6 Fin piece 6a End face 101 Fan 101-1 Boss 101-1a Hole 101-2 Recess 101-2a Hole 101-3 Spoke 101-4 Blade ( A1) Duct (A2) Duct (B1) Arrow view (B2) Arrow view (C1) Sending side (C2) Wall surface (C3) Near the back side (C4) Accepting side front (C5) ) Receiving side wall surface (d) Vortex generation area E Arrow view E1 Arrow view L Length dimension X Rotation direction

Claims (1)

Suspended on a fan, a motor for the fan, a first pulley provided on the rotation shaft of the fan, a second pulley provided on the output shaft of the motor, and the first pulley and the second pulley. In a drum pole with a square cross section and a box-shaped prism of a blower equipped with a belt.
The rotation axis of the fan of the drum pole is provided at the center portion in the vertical direction of the drum pole.
On the upper and lower sides of the drum pole, an upper chamber and a lower chamber are provided with an intermediate chamber in the middle portion of the drum pole interposed therebetween.
The upper chamber located above the intermediate chamber is provided with a fin piece (5) having a curved curve that protrudes from the wind sending side toward the receiving side and bulges upstream in the duct flow direction. The fin piece (5) protrudes from the wall surface (200b) on the receiving side, the lower end portion of the fin piece (5) is bottomed , and the lower end portion of the upper chamber connected to the intermediate chamber is bottomless .
A flipper (6) having a curved curve that protrudes from the wind sending side toward the receiving side and bulges upstream of the duct in the flow direction in the lower chamber located below the intermediate chamber. The fin piece (6) protrudes from the wall surface (201b) on the receiving side, the upper end of the fin piece (6) is bottomed , and the upper end of the lower chamber connected to the intermediate chamber is bottomless. year,
Drum pole of the blower characterized by that.

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