JP4691470B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a ventilation device that is inserted into a duct or pipe that communicates indoors and outdoors from the room side.

  Some ventilators are installed by inserting into the ducts and pipes that communicate indoors and outdoors from the indoor side, and many of them are held in the ducts and pipes by the spring force that acts in the direction of expansion of the leaf springs. Is. In order to prevent the motor lead extending from the motor from interfering with the insertion operation or being damaged by hitting the pipe, etc. when being inserted into the duct or pipe of the main body of the device (patented) References 1 and 2).

JP 2001-336795 A JP 2000-344411 A

  In recent years, with the progress of high airtightness and high thermal insulation in houses, the need for ventilation has also increased. Ventilation devices that can be easily installed by inserting into the ducts and pipes that communicate indoors and outdoors from the indoor side are used for ventilation. More and more are being served. Ventilation equipment is installed in multiple places, such as bathrooms, washrooms, toilets, and living rooms, and equipment is required to improve construction quality and ease of maintenance.

  The drive motors used in this type of ventilator are mostly AC condenser run motors, and their outer diameter is about φ60, so propeller fans that are less dusty are used for impellers. Because the road area is small, dust easily adheres to the inside of the main unit, especially the part that supports the drive motor. Recently, a small motor having an outer diameter of about φ45 has been developed, and the air passage area can be expanded, and dust attached to the inside of the main body can be reduced. In the conventional ventilation device, the drive motor is arranged at the rear end of the wind tunnel so that the motor lead extending from the drive motor in the manufacturing assembly process does not jump out of the guide structure provided on the outer periphery of the wind tunnel of the main body. A motor lead is hooked on a lead holding structure that extends from the rear end of the rear end and is pressed against the guide structure. However, there is a problem that dust tends to adhere to the lead holding structure of the structure in which the motor lead is hooked and the motor lead portion to which the motor lead is hooked.

  However, if the motor lead can move freely, the motor lead may be damaged by rubbing against the inner wall of the pipe when inserted into the pipe of the main unit, etc. In addition, when assembling, wiring processing and connection take time and are troublesome. Also, the sealing degree of the lead portion of the motor lead cannot be ignored for quality improvement.

  The present invention has been made to solve the above-mentioned problems, and its object is to obtain a high-quality ventilation device with good maintainability using a small motor having a small outer diameter, and assembling. It is to obtain a ventilator that is easy to dispose and can realize cost reduction.

In order to solve the above-described problems, the present invention is designed to insert a motor into a wind tunnel that is inserted into a pipe or the like that communicates indoors and outdoors and is installed in the pipe or the like by the spring force of a leaf spring. A ventilation device that is attached to a mounting structure that is integrally provided to the motor and that has an impeller attached to a rotating shaft of a motor that extends on the center line of the wind tunnel, and the mounting structure includes a plurality of legs extending in the axial direction from the wind tunnel end, A motor cover that is supported at the center of the wind tunnel by a bridge extending radially inward from the end of the leg, wraps around the outer motor shell from which the rotating shaft protrudes, and fixes the motor at the open end, and the motor lead of the fixed motor Lee of the lead outlet cover covering the outlet portion, the windward side U-shaped cross section having a lead guide groove for guiding the motor leads from the lead exit cover portion at the rear end of the wind tunnel is curved Adopting means to adopt a configuration provided with a guide structure.

  ADVANTAGE OF THE INVENTION According to this invention, the high quality ventilation apparatus with a sufficient maintainability with which dust does not adhere is obtained. In addition, it is easy to assemble and cost reduction can be realized.

The ventilator according to the present invention is inserted into a duct or pipe that communicates indoors and outdoors from the room side and is mounted inside the pipe or the like by the spring force of a leaf spring. A blower is assembled in the wind tunnel of the main body constituting the wind tunnel. The motor of the blower is a small motor having an outer diameter of about φ45, and is attached to a mounting structure that is integrally provided at a rear portion in the insertion direction of the pipe in a wind tunnel. A propeller-type impeller is mounted on the rotating shaft of the motor extending on the centerline of the wind tunnel. The mounting structure is supported at the center of the wind tunnel by a plurality of legs extending in the axial direction from the wind tunnel end and a bridging portion extending radially inward from each leg end, and wraps the motor outer shell on the side where the rotating shaft protrudes. A motor cover is provided to secure the at the open end. The exit portion of the motor lead of the motor fixed to the motor cover faces the rotating shaft and is covered with a lead exit cover integrally provided at the open end of the motor cover. The motor lead is integrally provided on the open end side of the motor cover, and is housed in a lead guide groove of a lead guide structure having a U-shaped cross section that guides from the lead outlet cover portion to the rear end of the wind tunnel. From the lead guide groove of the motor lead, along the guide structure provided in the center line direction on the outer periphery of the wind tunnel, it is routed outside the main body along the back of the front panel.

When assembling this ventilator, place the motor in the motor cover, fix it with screws to the open end of the motor cover, place the motor lead in the lead guide groove of the lead guide structure and route it, and the motor lead will move freely Do not stick out or sag from the wind tunnel. The motor lead routing operation is unique and requires no man-hours, and cost reduction can be achieved. Since the motor is small and the air passage area is large, and there is no lead holding structure that attaches the motor lead, dust does not adhere to the main body, and the motor lead is contained in the lead guide groove, so that dust adheres. There is no, and maintenance is easy. Since the lead guide structure has a U-shaped cross section and the windward side is curved, it is difficult for dust to adhere thereto, and the attached dust can be easily removed. The outlet portion of the motor lead is covered with a lead outlet cover, and this portion has a high degree of sealing, so that dust can be prevented from entering and entering the outlet portion of the motor lead, resulting in a high-quality ventilation device.

Embodiment 1 FIG.
The present embodiment shown in FIGS. 1 to 7 relates to a ventilation device that is fitted inside a pipe or duct. FIG. 1 is a longitudinal sectional view showing a ventilation device in an attached state, FIG. 2 is a longitudinal sectional view showing the ventilation device in the middle of attachment, FIG. 3 is a rear view of the ventilation device, and FIG. FIG. 5 is a perspective view of the rear side of the ventilator with the decorative grill removed, FIG. 6 is a perspective view of the rear side of the ventilator with the decorative grill removed, and FIG. 7 is the ventilator. FIG.

  This ventilator has a structure in which a blower is assembled to a main body 2 constituting a cylindrical wind tunnel 1, and is inserted into a duct or pipe 3 communicating indoors and outdoors from the room interior as shown in FIG. 1 is mounted in the pipe 3 or the like as shown in FIG. The motor 6 of the blower is an AC condenser run type small motor having an outer diameter of about φ45, and is attached to a mounting structure 7 provided integrally with a rear portion (outdoor) of the wind tunnel 1 in the insertion direction to the pipe 3 or the like. ing. A propeller-type impeller 9 is mounted on the rotating shaft 8 of the motor 6 extending on the center line of the wind tunnel 1. The main body 2 has an opening serving as a suction port 10 at the front, and a mounting structure for the motor 6 on the rear end side of the wind tunnel 1 provided with a flange 11 projecting radially in the mouth edge of the opening. 7 is formed as an integrally molded product made of resin integrally provided. The flange 11 forms an edge frame portion 12 whose free end side extends rearward, and constitutes a front surface portion that is the indoor side of the main body 2. A detachable decorative grill 5 (see FIG. 7) is mounted on the front surface of the main body 2.

  The mounting structure 7 includes three legs 13 having a spacing of 120 degrees extending along the center line direction from the rear end of the wind tunnel 1 at intervals in the circumferential direction, and radially inward from the ends of the legs 13. A motor cover 15 supported at the center of the wind tunnel 1 by an extending bridge portion 14 is provided (see FIGS. 1, 6 and 7). The indoor side (upstream side with respect to the ventilation flow) of each leg 13 and the bridging portion 14 is formed in an R shape or the like with low air resistance, and is difficult to get dust and easy to clean. The motor cover 15 is formed in an open container shape that encloses the motor outer shell 16 (frame side) from which the rotating shaft 8 protrudes. A protruding shaft hole is made. The motor outer shell 16 is made of a steel plate having a flange 17 for mounting at a substantially central position in the axial direction, and a motor lead 18 is pulled out from a bracket near the flange 17 of the motor outer shell 16 with the outlet direction directed toward the rotational axis. (See FIGS. 1 and 6).

  The leaf spring 4 that holds the main body 2 on the pipe 3 or the like is mounted on a holding portion 19 provided on the back surface of the base of the flange 11 of the main body 2 corresponding to the two legs 13. The holding part 19 has an insertion hole for inserting and holding the base part of the leaf spring 4, and a base part provided with a V-shaped cut-out of the leaf spring 4 is inserted (see FIGS. 6 and 7). The leaf spring 4 has been provided outside the leg 13 until now. However, since the leg 13 receives the expanding spring force of the leaf spring 4, the strength of the leg 13 has to be increased. Accordingly, the portion of the leg 13 to which the leaf spring 4 is attached has a large area and a complicated shape, and dust is easily attached thereto. By attaching the leaf spring 4 to the base of the flange 11 of the main body 2 that is superior in strength as in the present embodiment, the leg 13 is released from the expanding spring force of the leaf spring 4, and the motor 6 is fixed. It only needs to be carried, and can take a form in which dust does not easily adhere.

The motor 6 is screw-fixed with the mounting portion 20 of the flange 17 in close contact with the bridging portion 14 at the open end of the motor cover 15. The outer diameter of the open end of the motor cover 15 is equal to or slightly larger than the outer diameter of the flange 17 of the motor outer shell 16. As a result, the air passage area of this portion is ensured and dust is less likely to adhere. The outlet portion of the motor lead 18 of the motor 6 fixed to the motor cover 15 faces the rotating shaft side and is covered with a lead outlet cover 21 provided integrally with the open end of the motor cover 15 (see FIG. 6). The motor lead 18 is integrally provided on the open end side of the motor cover 15 and is received in a lead guide groove 23 of a lead guide structure 22 having a U-shaped cross section that guides from the lead outlet cover 21 portion to the rear end of the wind tunnel 1. Yes. From the lead guide groove 23 of the motor lead 18, along the guide structure 24 provided in the center line direction on the outer periphery of the wind tunnel 1, the back of the front flange 11 is held by a cord clip, and outside the main body 2. It is routed (see FIGS. 1, 5 and 6).

  The motor lead 18 is disposed outside the bracket of the motor outer shell 16 together with the starting capacitor, and these are wrapped by a cover 25 that covers the bracket. A lead outlet projecting in the radial direction is formed in a part of the cover 25, and a motor lead 18 protected by a lead tube is drawn out from this part toward the frame side of the motor outer shell 16. Further, the flange 17 of the motor outer shell 16 has a minimum projecting dimension (about φ48) necessary for ensuring the sealing of the joint between the frame and the bracket.

  An impeller 9 is attached to the rotary shaft 8 protruding from the motor cover 15. The shaft hole portion from which the rotating shaft 8 projects has a cylindrical portion 26 that wraps around the inner diameter portion of the boss portion of the impeller 9. The gap size of the wrapping portion is about 1 mm, and the impeller 9 rotates to form a hydrodynamic bearing structure, so that dust and water can be prevented from entering the bearing portion supporting the rotating shaft 8 of the motor 6. (See FIG. 1).

In this ventilation device, the motor 6 is housed in the motor cover 15 and fixed to the open end of the motor cover 15 with screws, and the motor lead 18 is placed in the lead guide groove 23 of the lead guide structure 22 for wiring. The motor lead 18 moves freely and does not protrude or sag from the wind tunnel 1. The wiring operation of the motor lead 18 is unique and simple, does not take man-hours, and a reduction in cost can be achieved. Since the motor 6 is small and has a large air passage area, and there is no lead holding structure for attaching the motor lead 18, dust is less likely to adhere to the main body 2, and the motor lead 18 fits in the lead guide groove 23. Therefore, there is no adhesion of dust, and maintenance is easy. Since the lead guide structure 22 has a U-shaped cross section and the windward side is curved, it is difficult for dust to adhere thereto, and the attached dust can be easily wiped off. The outlet portion of the motor lead 18 is covered with a lead outlet cover 21, and the sealing degree of this portion is high. Therefore, it is possible to avoid the adhesion and intrusion of dust to the outlet portion of the motor lead 18, and a high-quality ventilation device. It becomes. In addition, if a sealing material is interposed in the exit part of the motor lead 18, the said part can also be watertight. Further, the lead guide structure 22 may have a partially interrupted configuration in addition to a series of structures.

It is a longitudinal cross-sectional view which shows a ventilation apparatus in an attachment state. (Embodiment 1) It is a longitudinal cross-sectional view which shows the ventilation apparatus in the middle of attachment. (Embodiment 1) It is a rear view of a ventilation apparatus. (Embodiment 1) It is a perspective view of the front side of the ventilation apparatus which removed the makeup | decoration grill. (Embodiment 1) It is a perspective view of the back side of the ventilation apparatus which removed the makeup | decoration grill. (Embodiment 1) It is a perspective view of the back side of the ventilation apparatus which removed the makeup | decoration grill. (Embodiment 1) It is a disassembled perspective view of a ventilation apparatus. (Embodiment 1)

DESCRIPTION OF SYMBOLS 1 Wind tunnel, 2 Main body, 3 Pipe, 4 Leaf spring, 7 Mounting structure, 8 Rotating shaft, 9 Impeller, 13 Leg, 14 Bridge part, 15 Motor cover, 16 Motor outer shell, 17 Flange, 21 Lead exit cover, 22 Lead guide structure, 23 Lead guide groove.

Claims (4)

A motor is installed integrally at the rear of the wind tunnel in the direction of insertion into the pipe, etc. A ventilation device attached to a structure and having an impeller attached to a rotating shaft of the motor extending on the center line of the wind tunnel, the attachment structure comprising a plurality of legs extending in an axial direction from the wind tunnel end, and the leg end A motor cover that is supported at the center of the wind tunnel by a bridging portion that extends radially inward from the portion, wraps around the motor outer shell on which the rotating shaft protrudes, and fixes the motor at an open end; and a lead outlet cover covering the outlet portion of the motor leads, windward side U-shaped cross section having a lead guide groove for guiding the motor leads from said lead outlet cover portion at the rear end of the wind tunnel Ventilator, characterized in that it comprises a lead guide structure that song.   The ventilator according to claim 1, wherein the motor outer shell is made of a steel plate having a mounting flange substantially in the center in the axial direction, and the outlet direction of the motor lead is oriented in the rotational axis direction. 3. A ventilation device according to claim 2, wherein the diameter of the open end of the motor cover is equal to or slightly larger than the diameter of the flange of the motor outer shell, and the leaf spring is provided on the back surface of the flange base. Ventilation device held in . A motor is attached to a mounting structure that is integrally provided at the rear in the insertion direction of the wind tunnel installed in the pipe by the spring force of the leaf spring inserted into the pipe that communicates indoors and outdoors, and on the center line of the wind tunnel A ventilation device in which an impeller is mounted on the rotating shaft of the motor that extends,
  The mounting structure includes a plurality of legs extending in the axial direction from a wind tunnel end, and a bridge portion extending radially inward from the leg end, and is supported at the center of the wind tunnel, and includes a motor outer shell on a side from which the rotating shaft projects. A motor cover for wrapping and fixing the motor at the open end, a lead outlet cover for covering the outlet portion of the motor lead of the fixed motor, and guiding the motor lead from the lead outlet cover portion to the rear end of the wind tunnel Equipped with a lead guide structure with a U-shaped cross section with lead guide grooves,
A flange that is provided at the distal end of the wind tunnel in the direction of insertion into the pipe and that projects in the radial direction together with a decorative grille and forms a front portion on the indoor side;
One end of the leaf spring is attached to a holding portion provided on the back surface of the base of the flange, and the other end is a free end to support the wind tunnel in the pipe by an expanding spring force.
Ventilator characterized by that.

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