JPWO2020162054A1 - Blower - Google Patents

Abstract

The blower has a storage portion (4) on the outer surface of the housing (1) for storing the blower fan, and the storage portion includes an internal electric wire (12) connected to the blower fan and an external wire from the outside. It is provided with a terminal block (6) that mediates an electrical connection with the electric wire (18).
The housing can be installed in a horizontal or vertical state, and the terminal block has an internal terminal (20) for connecting the internal energizing wire to one side and the external communication to the other side facing the one. A straight line in the vertical direction between the internal terminal and the external terminal, which have an external terminal (21) for connecting an electric wire and electrically correspond to each other regardless of the horizontal or vertical state of the housing. It has a mounting structure that can be arranged so that it can be connected above.
This makes it possible to provide a blower that suppresses the occurrence of a short circuit due to water adhering to the electrical connection portion based on the installation direction.

Description

The present invention relates to a blower.

Conventionally, the blower is often installed outside the indoor living space such as the ceiling, the machine room, or the vertical shaft for ventilation. Such a space is an environment in which rainwater is likely to seep out from the ceiling and drip, or dew condensation is likely to occur due to a temperature difference. Therefore, for the purpose of protecting the electrical connection from water, it is known that a terminal box having an electrical connection inside is installed on the outer surface of the housing to improve the waterproofness of the electrical connection. (See, for example, Patent Document 1).

Hereinafter, the blower described in Patent Document 1 will be described with reference to FIG. 7.

As shown in FIG. 7, the conventional blower 101 has a blower portion 103 built in the housing 102. The blower 103 is composed of an electric motor 104 and an impeller 105 fixed to the shaft of the electric motor 104. A terminal box 106 is provided on the outer surface of the housing 102, and the terminal box 106 is provided with an external electric wire insertion port 107. An electrical connection 111 is provided inside the terminal box 106, and the terminal box 106 and the electrical connection 111 are always fixed to the housing 102 in the same direction.

The internal energizing wire 108 attached to the electric motor 104 is drawn into the terminal box 106 through the internal energizing wire insertion port 109 provided in the housing 102. On the other hand, the external energizing wire 110 is drawn into the terminal box 106 via the external energizing wire insertion port 107. The internal energizing line 108 and the external energizing line 110 are electrically connected via an electrical connecting portion 111 provided inside the terminal box 106. When power is supplied to the external energizing line 110, a voltage is applied to the electric motor 104 via the internal energizing line 108, and the electric motor 104 rotates about the rotation shaft 120. As the impeller 105 rotates in conjunction with the rotation of the electric motor 104, gas flows in from the suction port 121, and the blowout airflow 123 is sent out from the outlet 122.

Further, the blower 101 is used in various installation directions, such as horizontally installed so that the rotating shaft 120 is in the horizontal direction or vertically installed so as to be in the vertical direction, depending on the installation location inside the building. ..

Jitsukaisho 63-183400

Adhesion of water to the electrical connection 111 causes a short circuit. In order to avoid a short circuit even if water adheres to the electrical connection portion 111, the electrical connection portion 111 vertically corresponds to the terminals that electrically correspond to each other in the installation direction of the blower 101 on a straight line. It is preferable that they are arranged so as to be connected by.

However, in such a conventional blower 101, the terminal box 106 and the electrical connection 111 are always fixed to the housing 102 in the same direction. Therefore, depending on the installation direction, for example, the terminals of the electrically different poles of the electrical connection portion 111 are arranged on a straight line in the vertical direction, and when water adheres to the electrical connection portion 111, the water flows vertically downward. There is a problem that a short circuit is likely to occur.

The blower according to the present invention includes a blower fan, a housing for storing the blower fan, a storage portion provided on the outer surface of the housing, an internal electric wire stored in the storage portion and connected to the blower fan, and an external power line. It is provided with a terminal block that mediates an electrical connection with an external current-carrying wire. The housing can be installed in a horizontal or vertical state, and the storage unit includes an external power supply wire insertion port for drawing an external power supply wire into the inside of the storage unit. The terminal block is electrically connected to an internal terminal that connects an internal energizing wire to one side and an external terminal that connects an external energizing wire to the other that faces the other, regardless of whether the housing is placed horizontally or vertically. It is provided with a mounting structure capable of arranging the internal terminal and the external terminal corresponding to the above in a straight line in the vertical direction so as to be connectable. In this way, the intended purpose is achieved.

According to the present invention, it is possible to provide a blower that suppresses the occurrence of a short circuit due to water adhering to an electrical connection portion based on the installation direction.

FIG. 1 is a schematic perspective exploded view when the blower according to the present invention is installed horizontally. FIG. 2 is a schematic perspective exploded view when the blower according to the present invention is installed vertically. FIG. 3 is a schematic view of the terminal block mounting structure when the blower is placed horizontally (when the external energizing wire insertion port is provided in two directions). FIG. 4 is a schematic view of the terminal block mounting structure when the blower is installed vertically (when the external energizing wire insertion port is provided in two directions). FIG. 5 is a schematic view of the terminal block mounting structure when the blower is placed horizontally (when the external energizing wire insertion port is provided in one direction). FIG. 6 is a schematic view of the terminal block mounting structure when the blower is installed vertically (when the external energizing wire insertion port is provided in one direction). FIG. 7 is a schematic cross-sectional view of a conventional blower.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for the purpose of understanding the present invention. The following embodiments are examples that embody the present invention, and do not limit the technical scope of the present invention. In addition, the same parts are designated by the same reference numerals throughout the drawings, and the second and subsequent explanations are omitted.

(Embodiment 1)
First, a schematic configuration of the blower according to the present invention will be described with reference to FIG. It should be noted that FIG. 1 is a schematic perspective exploded view when the blower according to the present invention is installed horizontally.

As shown in FIG. 1, the blower 60 includes a housing 1, an electric motor 2, an impeller 3, a storage unit 4, a terminal block base 5, and a terminal block 6.

The housing 1 has a cylindrical shape, has suction openings 7 and outlet openings 8 at both ends, and the internal space in the cylindrical shape functions as a ventilation path. The housing 1 includes an internal energizing wire insertion port 9 and a motor base 10.

The internal energizing wire insertion port 9 is provided as an opening penetrating the side surface of the housing 1.

The motor base 10 functions as a base for arranging the electric motor 2 at a predetermined position in the housing 1. It is preferable that the motor base 10 is materially joined to the housing 1 by welding. This is because the motor 2 weighs 100 kg or more depending on the output, and a strong and tough structure is required to support the load. That is, in order to secure the welding strength, it is preferable to use the same metal material for the housing 1 and the motor base 10. When mechanically joining bolts and nuts or rivets, it is necessary to consider the bolt diameter and the required number of bolts to secure the joining strength, and loosening due to vibration during operation.

The electric motor 2 is arranged with the rotating shaft 11 at the center of the cylinder of the housing and parallel to the central axis of the cylinder. As the electric motor 2, a three-phase squirrel-cage induction motor of 0.2 kW or more is generally used, and an internal energizing line 12 is connected to the electric motor 2. The motor 2 is preferably mechanically joined to the motor base 10 by, for example, bolts and nuts. This is because, in the event that the motor 2 fails, the motor 2 can be easily replaced.

One end of the internal current-carrying wire 12 is connected to the motor 2, and the other end is directly drawn into the storage portion 4 via the internal power-carrying wire insertion port 9 provided on the side surface of the housing 1, and the internal power-carrying wire 12 of the storage portion 4 is drawn directly into the storage portion 4. It is connected to the terminal block 6 provided inside. The work of connecting the internal energizing wire 12 to the terminal block 6 is mainly performed by an assembling worker at the time of product assembly. The product refers to the blower 60. The internal energizing wire 12 is preferably covered with a metal or resin electric wire protection tube in order to protect it from foreign matter such as dust contained in the airflow passing through the housing 1. The end of the electric wire protection tube is fixed to each of the motor 2 and the housing 1.

The impeller 3 is connected to the rotating shaft 11 of the electric motor 2, and blows air by rotating the rotating shaft 11. That is, the electric motor 2 and the impeller 3 form a blower fan and are stored in the internal space of the housing 1.

The storage portion 4 includes a terminal box 13 and a terminal cover 14, and is provided on the outer surface of the housing 1 so as to cover the internal energizing wire insertion port 9.

The terminal box 13 has a substantially rectangular shape, and the housing mounting surface 30 arranged on the outer surface side of the housing 1 is fixed to the outer surface of the housing 1 by using screws or the like. The housing mounting surface 30 is provided with an opening, and the internal space of the terminal box 13 communicates with the internal space of the housing 1. The terminal box 13 includes a housing mounting surface 30, that is, four side surfaces (first side surface 31, second side surface 32, third side surface 33, fourth side surface 34) erected from the outer surface of the housing 1. .. The terminal box 13 is provided with an external current-carrying wire insertion port 15 as an opening on the first side surface 31 and the second side surface 32, and the external current-carrying wire 18 is drawn into the terminal box 13 via the external current-carrying wire insertion port 15. .. The external current-carrying wire insertion port 15 is composed of an external current-carrying wire insertion port A16 and an external current-carrying wire insertion port B17, which will be described in detail later. The terminal box 13 has an open top surface facing the housing mounting surface 30. That is, the terminal box 13 has a prismatic shape in which the top surface and the housing mounting surface 30 are open.

As shown in FIGS. 3 and 4 described later, the external energizing wire 18 is drawn into the storage portion 4 via the external energizing wire insertion port 15 and is connected to the terminal block 6. The work of connecting the external energizing wire 18 to the terminal block 6 is mainly performed by the installation worker at the time of product installation.

The terminal cover 14 has a lid shape that closes the opening on the top surface of the terminal box 13, and is detachably fixed to the terminal box 13 using screws or the like. At the time of product installation or maintenance, by removing the terminal cover 14, it is possible to easily perform the construction and maintenance of the electrical connection portion inside the storage portion 4. The four sides of the terminal cover 14 are bent toward the side surface side of the terminal box 13 to form a bent portion. This is to prevent the terminal cover 14 from falling when the bent portion is caught on the end surface which is the terminal cover 14 side end portion on the side surface of the terminal box 13 when the terminal cover 14 is attached or detached.

As the material constituting the terminal box 13 and the terminal cover 14, it is preferable to use metal or a flame-retardant resin of UL94V-0 or higher (for example, ABS (Acrylonitrile Butadiene Style) or PBT (PolyButylene Terephthate)). This is because the terminal block 6 which is an electrical connection portion is provided inside, so that the fire spreads to the outside of the product when the periphery of the terminal block 6 ignites due to a short circuit or the like.

The terminal block base 5 is detachably fixed inside the storage unit 4 using screws or the like, and functions as a base for fixing the terminal block 6.

The terminal block 6 is fixed to the terminal block base 5 using screws or the like and is stored inside the storage unit 4, but details will be described later.

The internal energizing line 12 and the external energizing line 18 are electrically connected via the terminal block 6.

With the above configuration, the blower 60 has a structure in which when power is supplied to the external energizing line 18, a voltage is applied to the electric motor 2 via the internal energizing line 12 and the impeller 3 rotates in conjunction with the rotation of the electric motor 2. be. When the impeller 3 rotates, the airflow flows in from the suction opening 7, and the blown airflow 19 is sent out from the blowout opening 8.

Next, the installation direction of the blower 60 will be described with reference to FIGS. 1 and 2. Note that FIG. 2 is a schematic perspective exploded view when the blower according to the present invention is installed vertically.

The installation direction of the blower 60 can be horizontal installation in which the rotating shaft 11 is installed horizontally or vertical installation in which the rotating shaft 11 is installed vertically.

In the horizontal installation, as shown in FIG. 1, for example, it is preferable to install the blower 60 with the motor base 10 positioned vertically below the motor 2. This is because the safety factor against allowable stress is higher when the load due to the weight of the motor 2 is applied to the joint between the motor 2 and the motor base 10 and the joint between the motor base 10 and the housing 1 in the compression direction. Is.

Further, in the vertical installation, as shown in FIG. 2, it is preferable to install the blower 60 with the motor 2 positioned vertically above the impeller 3. This is because the motor 2 has a wave washer on the internal counter-driving side (the side opposite to the side to which the impeller 3 is connected) for securing the axial pressure on the bearing, and the blades are compressed in the direction of compressing the wave washer. This is because when the weight of the vehicle 3 acts, the wave washer is crushed and the shaft pressure is lowered, which causes abnormal vibration and abnormal noise due to damage to the bearing. However, when the wave washer is provided on the drive side (the side to which the impeller 3 is connected), it is preferable to install the blower 60 by positioning the motor 2 vertically below the impeller 3.

That is, it is preferable to specify the installation direction of the blower 60 in a predetermined direction for each of the horizontal installation and the vertical installation from the viewpoint of ensuring the quality of the product.

Next, the structure of the storage unit 4 of the present invention will be described in detail with reference to FIGS. 3 and 4. FIG. 3 is a schematic view of the terminal block mounting structure when the blower is placed horizontally (when the external energizing wire insertion port is provided in two directions), and FIG. 4 is a schematic view of the terminal block mounting structure when the blower is placed vertically (external). (When the energizing wire insertion port is provided in two directions). Although each drawing shows the housing 1 and the storage unit 4, the size ratio of the housing 1 and the storage unit 4 is different from the actual size.

The external current-carrying wire insertion port 15 provided in the storage unit 4 is composed of an external current-carrying wire insertion port A16 and an external current-carrying wire insertion port B17. The external energizing wire insertion port A16 is provided on the first side surface 31 located vertically below the housing 1 in the horizontal position. Further, the external energizing wire insertion port B17 is located vertically below the housing 1 in the vertically installed state, and is provided on the second side surface 32 adjacent to the first side surface 31. The storage unit 4 includes a water entry prevention plug B23 that closes the external current-carrying wire insertion port B17 when the housing 1 is placed horizontally, and a water-entry prevention plug A22 that closes the external current-carrying wire insertion port A16 when the housing 1 is placed vertically. ing.

The water entry prevention plug A22 and the water entry prevention plug B23 are made of rubber (NBR or EPDM), for example, and have a non-penetrating tubular shape. Such water entry waterproof plugs are commonly known as grommets and bushings. If it is made of rubber, the external energizing wire 18 can be pulled into the storage portion 4 by easily making a notch when installing the product. Another reason for using rubber is to protect the external current-carrying wire 18 from the end face of the external power-carrying wire insertion port 15 when the terminal box 13 is made of metal.

At the time of product installation, the external current-carrying wire insertion port A16 and the external current-carrying wire insertion port B17 are closed by the water entry prevention plug A22 and the water entry prevention plug B23, respectively. It is used by penetrating the external energizing wire insertion port 15 on the side located vertically below the body 1. As another means for closing the external energizing wire insertion port 15, a cap-shaped component may be used, or a hinge structure or a latch structure may be provided in the vicinity of the insertion port.

As described above, by providing the external energizing wire insertion port 15 on the first side surface and the second side surface adjacent to the first side surface, the external energizing wire 18 can be terminally connected without being affected by the installation direction of the blower 60. It can be inserted into the terminal box 13 from vertically below the box 13.

This makes it possible to suppress a decrease in waterproofness of the electrical connection portion.

It is preferable to provide packing on the mounting surfaces of the housing 1 and the terminal box 13 and the mounting surfaces of the terminal cover 14 and the terminal box 13 because the waterproofness of the storage portion 4 can be improved. The material of the packing is, for example, a resin such as rubber or polyurethane.

As shown in FIGS. 5 and 6, an external energizing wire insertion port 15 may be provided on either the first side surface 31 or the second side surface 32. FIG. 5 is a schematic view of the terminal block mounting structure when the blower is placed horizontally (when the external energizing wire insertion port is held in one direction), and FIG. 6 is a schematic diagram of the terminal block mounting structure when the blower is placed vertically (external energizing line). When the insertion port is held in one direction). The external energizing wire insertion port 15 includes a water entry prevention connector 24 that prevents water from entering the inside of the storage unit 4 from the external energizing wire insertion port 15 with the external energizing wire 18 inserted.

The water entry prevention connector 24 has, for example, a penetrating tubular shape composed of a resin screw portion and a rubber waterproof portion. Such a water entry prevention connector is commonly known as a cable gland. By inserting the external energizing wire 18 into the water entry prevention connector 24 and tightening the screw portion, the gap between the water entry prevention connector 24 and the external energizing wire 18 can be closed with the rubber waterproof portion.

Further, the storage unit 4 has a structure that can be attached to the housing 1 in only one direction. This is because, when the product is assembled, the assembly worker installs the storage portion 4 in the wrong direction, so that the external energizing wire insertion port 15 is provided in a state other than vertically below, and the waterproofness of the electrical connection portion is reduced. This is to prevent it. An example of a structure in which the storage unit 4 can be attached to the housing 1 in only one direction is shown below. Specifically, as shown in FIG. 3, the storage portion 4 has mounting holes 41, 42, 43, 44 provided on the housing mounting surface 30, and the mounting holes 41 and mounting holes in the horizontal state. 43 is located vertically above the mounting holes 42 and 44, and the mounting holes 41 are located closer to the mounting holes 42 than the mounting holes 43. Further, the mounting holes 41 and 43, and the mounting holes 42 and 44 are located on parallel straight lines 45 and 46, respectively. The straight lines 41a, 42a, 43a, 44a that are perpendicular to the straight lines 45 and 46 and pass through the centers of the mounting holes 41, 42, 43, and 44 are straight lines 43a and straight lines rather than the distance 47 between the straight lines 41a and 42a. The distance 48 of 44a is smaller. By arranging the mounting holes in this way, the storage unit 4 can be mounted in only one direction with respect to the housing 1.

Next, the mounting structure of the terminal block base 5 and the terminal block 6 according to the present invention will be described with reference to FIGS. 3 and 4.

The terminal block base 5 includes a mounting portion 51 and a mounting portion 52 in which the terminal block 6 is fixed in a specific direction.

The mounting portion 51 has a plate shape parallel to the housing mounting surface 30 of the storage portion 4. The mounting portion 51 is provided on one side of the terminal block base 5, specifically, on the upper left side when viewed from the top opening of the storage portion 4 in the installed state, and has a mounting hole 51a and a mounting hole 51b.

The mounting portion 52 has a plate shape parallel to the housing mounting surface 30 of the storage portion 4. The mounting portion 52 is provided on the diagonal line of the mounting portion 51 on the terminal block base 5, specifically, on the lower right side when viewed from the front, and has a mounting hole 52a and a mounting hole 52b.

The terminal block 6 has an internal terminal 20 for connecting the internal current-carrying wire 12 along one side and an external terminal 21 for connecting the external current-carrying wire 18 along the other side facing the internal terminal 20. Have. The terminal block 6 has a structure in which the internal terminals 20 and the external terminals 21 that electrically correspond to each other in the installed state of the housing 1 are connected in a straight line in the vertical direction. The electrically connected internal terminal 20 and the external terminal 21 are connected in a straight line in the vertical direction, for example, by using a metal plate. Electrically corresponding means a relationship of the same poles that has no potential difference and does not short-circuit even if it conducts. The reason for connecting the internal terminal 20 and the external terminal 21 that electrically correspond to each other on a straight line in the vertical direction is that water generated inside the terminal box 13 such as dew condensation water flows to the internal terminal 20 or the external terminal 21. This is because when the terminals adhere to each other and flow vertically downward, a short circuit may occur if the terminals having different poles are located in the vertical direction, but the terminals having the same pole do not cause a short circuit.

In the terminal block 6, the external terminal 21 is arranged on the external energizing line insertion port A16 side of the internal terminal 20 corresponding to the housing 1 in the horizontal state. Further, in the terminal block 6, the external terminal 21 is arranged closer to the external energizing wire insertion port B17 than the internal terminal 20 corresponding to the housing 1 in the vertically installed state. That is, the terminal block 6 has a mounting structure that can be arranged vertically and horizontally according to the installation state of the blower 60 via the terminal block base 5. However, although this mounting structure is vertically and horizontally flexible, the vertical arrangement is restricted so that the external terminal 21 is always arranged closer to the external energizing wire insertion port 15 than the internal terminal 20.

In other words, the terminal block 6 can be arranged so that the predetermined terminal block 6 side surface faces the first side surface 31 and the second side surface 32 of the storage unit 4, but the terminal block 6 faces the first side surface 31 of the storage unit 4. The structure is such that the fourth side surface 34 facing the three side surfaces 33 and the second side surface 32 and the side surface of the predetermined terminal block 6 face each other and cannot be arranged. The predetermined side surface of the terminal block 6 is a side surface located closer to the external terminal 21 than the internal terminal 20.

Specifically, as shown in FIGS. 3 and 4, in the terminal block 6, the external terminal 21 is placed on the terminal block base 5 rather than the internal terminal 20 regardless of whether the blower 60 is placed horizontally or vertically. It is positioned and fixed on the mounting portion 52 side. Then, in the horizontal state of the blower 60, as shown in FIG. 3, the mounting holes 51b and 52a of the terminal block base 5 are fixed so as to overlap with the positions of the mounting holes 41 and 44 of the terminal box 13, respectively. can do. At this time, the external terminal 21 is arranged closer to the external energizing wire insertion port A16 than the internal terminal 20. In other words, in the terminal block 6, the external terminal 21 is located below the housing 1 in the horizontal position on a straight line in the vertical direction of the internal terminal 20, and the external energizing wire 18 is located below. It is connected to the external terminal 21 via the external energizing wire insertion port A16.

On the other hand, when the blower 60 is installed vertically, as shown in FIG. 4, the terminal block base 5 is rotated by 90 ° with respect to FIG. 3, that is, the mounting holes 51a and 52b of the terminal block base 5 are respectively provided. It can be fixed so as to overlap the positions of the mounting holes 42 and the mounting holes 43 of the terminal box 13. At this time, the external terminal 21 is arranged closer to the external energizing wire insertion port B17 than the internal terminal 20. In other words, in the terminal block 6, the external terminal 21 is located below the housing 1 in the vertical position on a straight line in the vertical direction of the internal terminal 20, and the external energizing line 18 is located below. It is connected to the external terminal 21 via the external energizing wire insertion port B17.

In FIG. 4, when the terminal block base 5 is to be fixed upside down, that is, when the internal terminal 20 is to be arranged on the external energizing wire insertion port B17 side, the mounting hole 52a is relative to the mounting hole 42. And even if the mounting holes 52b can be matched, if the mounting holes 51a and 51b are to be matched with the mounting holes 43, the mounting portion 51 has a dimensional relationship that interferes with the terminal box 13, so they should be matched. I can't. That is, regarding the attachment of the terminal block base 5 to the storage portion 4, the vertical arrangement is restricted, and the vertical arrangement is not possible.

Further, even when the terminal block base 5 is fixed upside down in FIG. 3, the vertical arrangement of the terminal block base 5 to the storage portion 4 is restricted, and the vertical arrangement becomes impossible. There is.

With the above configuration, the external terminal 21 of the terminal block 6 can be arranged on the external energizing wire insertion port 15 side (that is, vertically downward side of the terminal block 6 with respect to the installation direction) regardless of the installation direction of the blower 60. ..

As a result, the external terminal 21 is closer to the external energizing wire insertion port 15 than the internal terminal 20, so that the installation operator can prevent the external energizing wire 18 from being erroneously connected to the internal terminal 20. It will be possible. Further, when the external energizing wire 18 is connected to the external terminal 21, it is not necessary to route the external energizing wire 18 inside the terminal box 13 for wiring, so that the workability can be improved. In particular, when the output of the motor 2 is high, the wire diameter of the external energizing wire 18 becomes large, so that it is necessary to secure a space for routing the external energizing wire 18 inside the terminal box 13. However, in the above configuration, the size of the terminal box 13 is increased. It can be minimized and can contribute to the miniaturization of the blower 60.

The blower according to the present invention has an electrical connection with respect to the installation direction even when it is assumed that the blower is installed in a horizontal installation direction, a vertical installation, or the like depending on the installation location in the building. It is useful as a blower that suppresses deterioration of waterproofness.

1 Housing 2 Motor 3 Impeller 4 Storage part 5 Terminal block base 6 Terminal block 7 Suction opening 8 Blow-out opening 9 Internal power line insertion port 10 Motor base 11 Rotating shaft 12 Internal power line 13 Terminal box 14 Terminal cover 15 External power line Insertion port 16 External energizing wire insertion port A
17 External energizing wire insertion port B
18 External energizing line 19 Blow-out airflow 20 Internal terminal 21 External terminal 22 Water entry prevention plug A
23 Water entry prevention plug B
24 Water entry prevention connector 30 Housing mounting surface 31 First side surface 32 Second side surface 33 Third side surface 34 Fourth side surface 41, 42, 43, 44 Mounting holes 41a, 42a, 43a, 44a Straight lines 45, 46 Straight lines 47, 48 Distance 51, 52 Mounting parts 51a, 51b, 52a, 52b Mounting holes 60 Blower 101 Blower 104 Motor 105 Impeller 106 Terminal box 107 External energizing line insertion port 108 Internal energizing line 109 Internal energizing line insertion port 110 External energizing line 120 Rotating shaft 123 Blowout airflow

Claims (11)

With a blower fan
A housing for storing the blower fan and
A storage unit provided on the outer surface of the housing and
It is provided with a terminal block that is stored in the storage unit and is connected to the blower fan and mediates an electrical connection between an internal electric wire and an external electric wire from the outside.
The housing is
It can be installed horizontally and vertically,
The storage unit is
An external current-carrying wire insertion port for drawing the external current-carrying wire into the storage portion is provided.
The terminal block
An internal terminal for connecting the internal energizing wire to one side,
An external terminal for connecting the external energizing wire to the other facing the other,
A blower provided with a mounting structure capable of arranging the internal terminals and the external terminals that electrically correspond to each other in a straight line in the vertical direction regardless of the horizontal or vertical state of the housing. .. The external energizing wire insertion port is
The first side surface located vertically below the housing in the horizontal position, or the second side surface located vertically below the housing in the vertical position and adjacent to the first side surface. Provided in
The external energizing wire is
The blower according to claim 1, wherein the blower is connected to the external terminal located below the internal terminal via the external energizing wire insertion port. The mounting structure is
A predetermined terminal block side surface of the terminal block can be arranged so as to face the first side surface of the storage unit.
The blower according to claim 1 or 2, wherein the side surface of the predetermined terminal block can be arranged so as to face the second side surface. The terminal block
The blower according to claim 3, wherein the third side surface of the storage portion facing the first side surface, the fourth side surface facing the second side surface, and the predetermined terminal block side surface face each other and cannot be arranged. The external energizing wire insertion port is
An external energizing wire insertion port A provided on the first side surface located vertically below the housing in the horizontal state, and
The blower according to claim 1, further comprising an external energizing wire insertion port B located vertically below the housing in a vertically installed state and provided on a second side surface adjacent to the first side surface. The mounting structure is
The external terminal can be arranged closer to the external energizing wire insertion port A side than the internal terminal in correspondence with the housing in the horizontal state, and the external terminal corresponds to the housing in the vertical state. The blower according to claim 5, wherein the external terminal can be arranged closer to the external energizing wire insertion port B side than the internal terminal. The terminal block
The external terminal is located below the housing in the horizontal position on a straight line in the vertical direction of the internal terminal.
The external energizing wire is
The blower according to claim 6, which is connected to the external terminal located below the external terminal via the external energizing wire insertion port A. The terminal block
The external terminal is located below the housing in the vertical position on a straight line in the vertical direction of the internal terminal.
The external energizing wire is
The blower according to claim 6, which is connected to the external terminal located below the external terminal via the external energizing wire insertion port B. The storage unit is
The blower according to claim 1, further comprising a water entry prevention connector for preventing water from entering the inside of the storage portion from the external energizing wire insertion port in a state where the external energizing wire is inserted into the external energizing wire insertion port. The storage unit is
The blower according to claim 7, further comprising a water entry prevention plug B that closes the external energizing wire insertion port B when the housing is placed horizontally. The storage unit is
The blower according to claim 8, further comprising a water entry prevention plug A that closes the external energizing wire insertion port A when the housing is installed vertically.

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