JP3329666B2 - Air supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply device connected to a duct behind a ceiling and configured to supply air on the duct side into a room.

[0002]

SUMMARY OF THE INVENTION For example, Japanese Utility Model Laid-Open No. 1-10
Japanese Patent Publication No. 0043 discloses the following configuration. That is, an air supply device (air outlet) provided with a fan is provided in a plurality of rooms (rooms), and each air supply device and a heat exchanger are connected by a duct. The air cooled or heated by the exchanger can be supplied to each room from each air supply device through a duct.

[0003] However, the above publication does not show a specific configuration of the air supply device. When such an air supply device is installed above the ceiling, if the height of the air supply device is large, it cannot be installed in a place where the height above the ceiling is low. It is demanded to aim at.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air supply device capable of reducing the thickness in a configuration in which air on the duct side is supplied into a room. is there.

[0005]

According to a first aspect of the present invention, in order to achieve the above-mentioned object, the lower surface is disposed on the back of the ceiling with the lower surface facing an opening formed in the ceiling of the room, and is provided on the side. A main body frame having an air inlet that is communicated with a duct disposed behind the ceiling, an air intake chamber provided in an upper part of the main body frame so as to communicate with the air inlet, and A fan casing portion provided so as to be located below the intake chamber; a ventilation hole provided between the intake chamber and the fan casing portion to allow them to communicate with each other; and an intake port side of the intake chamber. A wind guide portion that is provided at a lower portion of the fan, and has an inclined surface shape that gradually increases from the intake port side to the vent hole side, an outlet that communicates the inside of the fan casing portion with the inside of the room, and a motor, and Direction of center axis up and down A fan that is disposed in the fan casing and is driven to rotate by the motor in a state in which the air is blown by the fan into the intake chamber through the duct and the intake port. A fan device for sucking air and supplying the air in the air intake chamber from the outlet to the room through the air hole and the fan casing.

According to the above-described means, by setting the rotation center axis of the fan in the fan device to be vertically oriented, the height of the fan is higher than when the rotation center axis of the fan is horizontal. Dimensions can be reduced. In addition, the air guide section at the lower part of the air intake side of the air intake chamber is formed as a slope that gradually increases from the air intake side to the air vent side. It becomes possible to approach the upper part in the frame, and the height dimension of the main body frame can be further reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, in FIG. 1 showing an attached state of an air supply device, a rectangular opening 3 is formed in a ceiling plate 2 which is a ceiling of a room 1.
A wooden frame 4 is provided at the edge of the. In this case, the opening 3 is formed at a position off the center of the room 1 on the ceiling of the room 1. As shown in FIG. 3, the mounting plate 5 made of a metal plate has a flange portion 5 a at a lower end portion. By screwing the flange portion 5 a to the wooden frame 4,
It is provided in a state of standing on the ceiling 6. The mounting plate 5 is formed with a horizontally long rectangular hole 7 and a cylindrical connection port 8 communicating with the hole 7 on the side surface.

The connection port 8 corresponds to the hole 7 so that the mounting plate 5
Has a flattened shape in which the horizontal direction along the side surface is a longitudinal direction, and a tip end is connected to one end of a duct 9 arranged in the ceiling back 6. In addition, the connection port 8 is connected to the duct 9
There is no or little expansion in the vertical direction from the distal end to the base end, which is the connection side of the mounting plate 5, and the horizontal direction along the side surface of the mounting plate 5 is formed so as to gradually expand. A tape 10 is wound around an outer peripheral portion of a connection portion between the connection port 8 and the duct 9. Mounting plate 5
Are provided integrally with each other at an upper portion of the first member. Although not shown, the other end of the duct 9 is connected to, for example, a discharge port of an air conditioner.

The main body frame 12 is formed in a rectangular box shape with a lower surface opened by a metal plate, and has a flange portion 12a formed at a peripheral edge of a lower end portion. Room 1 side) and insert each flange 12a
Is screwed to the wooden frame 4 so that the lower surface faces the opening 3 and is arranged on the ceiling back 6. This body frame 12
On one side surface, a horizontally long rectangular intake port 13 corresponding to the hole 7 of the mounting plate 5 is formed, and two engagement recesses 14 are formed on the upper surface portion. Body frame 1
2 is arranged in the ceiling space 6, the air inlet 13 is in communication with the duct 9 through the hole 7 and the connection port 8, and the engagement recess 14 and the engagement piece 11 are engaged. Are adapted.

As shown in FIG. 2, a casing member 15 made of, for example, styrofoam is provided inside the main body frame 12. The casing member 15 includes the main body frame 1.
A concave portion 17 for forming an intake chamber 16 is formed in an upper portion of the inside 2, a fan casing portion 18 is formed in a lower portion, and a partition portion 19 that separates the concave portion 17 from the fan casing portion 18 is formed. A circular bell mouth 20 is formed as a vent hole that connects the inside of the intake chamber 16 and the inside of the fan casing 18. The intake chamber 16
Communicates with the air inlet 13 of the main body frame 12. Intake chamber 1
6, a wind guide portion 21 is formed at a lower portion on the intake port 13 side, and the wind guide portion 21 is formed in an inclined surface shape that gradually increases from the intake port 13 side to the bell mouth 20 side.

As shown in FIG. 5, in the concave portion 17 forming the intake chamber 16, the bell mouth 20 has a width L 1 in the horizontal direction on the intake port 13 side at a portion corresponding to the wind guide portion 21. The width L2 in the horizontal direction on the side is formed to be large (L1 <L2). Further, the center O1 in the width direction (horizontal direction) of the intake port 13 (center line M in FIG. 5)
1) and the center O2 of the bell mouth 20 (see the center line M2 in FIG. 5) are in a horizontal direction (see arrow A) orthogonal to the main flow direction of air flowing from the intake port 13 side to the bell mouth 20 side (see arrow A). 5 (in the vertical direction in FIG. 5).

Further, of the horizontal spacing between the side wall 17a of the concave portion 17 forming the intake chamber 16 and the peripheral edge of the bell mouth 20, the main flow of air flowing from the intake port 13 side to the bell mouth 20 side The spacing dimension P1 on one side (lower side in FIG. 5) in the horizontal direction (vertical direction in FIG. 5) orthogonal to the direction (see arrow A) is set to the opposite side (FIG. 5).
(Upper side in FIG. 3) is set to be larger than the interval dimension P2 (P1> P2).

As shown in FIGS. 4 and 5, a nose portion 22 is formed in the fan casing portion 18.
The nose portion 22 is arranged near the bell mouth 20. Further, the side wall 1 of the concave portion 17 forming the intake chamber 16
7a, the side wall 17b (the right side in FIG. 5) opposite to the intake port 13 is formed in a smooth curved shape, and a portion 17c corresponding to the nose portion 22 is Similarly, it is arranged near the bellmouth 20.

In the casing member 15, a surface 23 (FIG. 4) on the back side of the nose portion 22 of the fan casing portion 18.
And the side wall 17a of the concave portion 17 forming the intake chamber 16
Of these, the surface 24 which is the back side of the portion 17c corresponding to the nose portion 22 is formed substantially flush with and recessed, and is formed between these surfaces 23 and 24 and the inner surface of the main body frame 12. In between, electrical components such as a fan device 33 described later
A storage section 26 for storing a wiring board 25 (indicated by a two-dot chain line in FIG. 5) on which a microcomputer for controlling the operation of the microcomputer is arranged is formed.

A motor 27 is disposed in the upper part of the main body frame 12 with its rotating shaft 28 directed downward. The motor 27 is connected to the upper intake chamber 16 inside the main body frame 12.
The motor base 2 is located on the lower surface of the upper surface of the body frame 12.
9 is attached. The rotating shaft 28 protrudes into the fan casing 18, and the rotating shaft 28
A fan 30 composed of a sirocco fan is mounted via a boss 31 in a state of being positioned in the fan casing 18. Therefore, the fan 30 is disposed in the fan casing 18 with its rotation center axis 32 (indicated by dashed lines in FIG. 1 for convenience) directed vertically. These fans 30 and this fan 3
0 is rotated by the motor 27 so that the fan device 33
Is composed.

A closing plate 34 is attached to the lower surface of the casing member 15 so as to close the lower surface of the fan casing portion 18. The closing plate 34 and the fan casing portion 18 allow the inside of the fan casing portion 18 and the room to be closed. 1 is formed to communicate with the inside. The outlet 35 is formed along one side of the main body frame 12. The opening 3 of the ceiling plate 2 is located below the closing plate 34.
The decorative panel 36 is detachably attached so as to cover from below. A hole 37 is formed in the decorative panel 36 at a position corresponding to the outlet 35, and a louver 38 is rotatably attached to the hole 37.

Now, in the above configuration, the fan device 33
When the motor 27 is energized and the fan 30 is rotated by the motor 27, the air cooled or heated by the air conditioner (not shown) by the air blowing action of the fan 30 flows through the duct 9 and the connection port 8. It is sucked into the intake chamber 16 (see arrow A in FIG. 1). Intake chamber 16
As shown by arrows a and b in FIG.
0 and flows into the fan casing 18. Then, it passes through the inside of the fan casing 18 and the outlet 35
Is supplied into the room 1 through the hole 37 (see the arrow B in FIG. 1).

At this time, the direction of the wind supplied into the room 1 can be adjusted by the direction of the louver 38 provided in the hole 37. By setting the direction of the wind supplied into the room 1 to be directed to, for example, the center of the room 1, cold or warm air can be efficiently supplied to the entire inside of the room 1.

According to the first embodiment, the following effects can be obtained. Since the fan 30 in the fan device 33 is arranged in the fan casing 18 with the rotation center axis 32 of the fan 30 oriented vertically, the rotation center axis 32 of the fan 30 is set in the horizontal direction. The height dimension of the fan 30 can be reduced as compared with the case of FIG. In addition, the wind guide portion 21 in the lower portion of the intake chamber 16 on the intake port 13 side is formed in an inclined surface shape that gradually increases from the intake port 13 side to the bell mouth 20 side. 13
As compared with the case where the fan 30 is formed in a horizontal plane from the lower edge to the bell mouth 20 side, it is possible to make the fan 30 closer to the upper part in the main body frame 12 while securing the height dimension of the intake port 13, The height dimension of the main body frame 12 can be reduced. Accordingly, it is possible to reduce the height dimension of the entire air supply device, and it is possible to cope with a reduction in thickness. Therefore, even in a place where the height of the ceiling space 6 is relatively low, the air supply device can be disposed on the ceiling space 6.

In the concave portion 17 forming the intake chamber 16,
Since the horizontal width L2 on the bell mouth 20 side is formed to be larger than the horizontal width L1 on the intake port 13 side in a portion corresponding to the wind guide section 21, the wind guide section 21 is formed. Is formed in the shape of an inclined surface that gradually increases from the intake port 13 side to the bell mouth 20 side, but the air path area of the intake chamber 16 from the intake port 13 to the bell mouth 20 can be secured, and the air path resistance is reduced. The increase can be suppressed.

The center O1 in the width direction of the intake port 13 and the center O2 of the bell mouth 20 are aligned in a horizontal direction (see arrow A) perpendicular to the main flow direction of air flowing from the intake port 13 side to the bell mouth 20 side. 5 (in the vertical direction in FIG. 5), and the horizontal space between the side wall 17a of the concave portion 17 forming the intake chamber 16 and the peripheral edge of the bell mouth 20 in the horizontal direction from the intake port 13 side. The space dimension P1 on one side (lower side in FIG. 5) in the horizontal direction (vertical direction in FIG. 5) orthogonal to the main flow direction (see arrow A) of the air flowing to the bell mouth 20 side is set to the opposite side (FIG. 5
Is set to be larger than the interval dimension P2 (upper side in FIG. 2), so that the bell mouth 2
As the flow of air flowing to zero, not only the flow (see arrow a) flowing linearly from the intake port 13 side to the bellmouth 20 side, but also the air flow passing through the portion 16a having a large interval dimension P1,
A flow (see arrow b) flowing around the bellmouth 20 is also formed, and the blowing performance can be improved.

In this embodiment, the center O1 in the width direction of the air inlet 13 and the center O2 of the bell mouth 20 are set in the horizontal direction orthogonal to the main flow direction (see arrow A) by a dimension N.
The same effect can be obtained by shifting the center of the connection port 8 in the width direction and the center O2 of the bell mouth 20 by the dimension N in the horizontal direction in the same manner as described above.

The connection port 8 connected to the duct 9 has a flat shape in which the horizontal direction along the side surface of the mounting plate 5 (the side surface of the body frame 12) is a longitudinal direction. As compared with, it is possible to further suppress the height dimension of the main body frame 12, and furthermore, the height dimension of the entire air supply device,
The air flowing from the intake port 13 to the bell mouth 20 side can flow into the bell mouth 20 from the widest possible range of the bell mouth 20.

The connection port 8 has no or little expansion in the vertical direction from the distal end, which is the connection side with the duct 9, to the base end (the intake port 13 side).
Since the horizontal direction along the side surface of the mounting plate 5 is formed so as to gradually expand, the air path can be gradually expanded while the height dimension of the main body frame 12 is suppressed, and the air path resistance increases. Can be prevented. In addition, since the distal end of the connection port 8 is not extremely flat compared to the base end, there is also an advantage that the duct 9 connected thereto does not need to have an extremely flat shape.

FIGS. 6 and 7 show a second embodiment of the present invention. The second embodiment differs from the first embodiment in the following points. That is, the mounting plate 40 made of a metal plate is disposed outside the side surface of the main body frame 12, and has a horizontally long rectangular connection port insertion hole 41 formed at an upper portion thereof. A concave portion 42 is formed in a peripheral portion of the hole 41. The connection port 43 is made of plastic.
A flange portion 44 formed in a flat cylindrical shape whose longitudinal direction is the horizontal direction along the side surface of the
Are integrally provided. The connection port 43 is inserted into the connection port insertion hole 41 of the mounting plate 40 from the body frame 12 side (the right side in FIG. 7), and the flange portion 44 is fixed to the mounting plate 40 with the screw 45. It is mounted on a mounting plate 40. In the connection port 43 having such a configuration, in use, the base end, which is one end, is in communication with the intake port 13 of the main body frame 12, and the distal end, which is the other end, is connected to the duct 9. You.

In the second embodiment, the connecting port 43 is connected to the mounting plate 40 while the mounting plate 40 made of a metal plate and the connecting port 43 made of plastic are combined.
Is inserted from the body frame 12 side into the connection port insertion hole 41 and is attached to the mounting plate 40. Therefore, even if a vertical or horizontal load is applied to the connection port 43 from the duct 9 side, the connection port 43 There is an advantage that formation of a gap with the mounting plate 40 can be prevented as much as possible.

The present invention is not limited to the above embodiments, but can be modified or expanded as follows. Instead of connecting the other end of the duct 9 to the air conditioner, the duct 9 may be exposed to the outside and the outdoor air may be supplied into the room 1 through the duct 9. The concave portion 17 that forms the intake chamber 16 and the fan casing portion 18 may be configured as separate members.

[0028]

According to the first aspect of the present invention, the fan in the fan device is arranged in the fan casing with the rotation axis of the fan directed vertically. It is possible to reduce the size, and the wind guide part at the bottom of the intake port side in the intake chamber,
By forming an inclined surface that gradually increases from the intake port side to the vent hole side, it is possible to keep the height of the intake port, but also allow the fan to approach the upper part of the main body frame, The height dimension can be reduced. Accordingly, it is possible to reduce the height dimension of the entire air supply device, and it is possible to cope with a reduction in thickness. Therefore, even in a place where the height of the ceiling is relatively low, the air supply device can be disposed above the ceiling.

According to the second aspect of the present invention, while the wind guide portion of the intake chamber at the lower portion on the intake port side is formed as an inclined surface,
It is possible to secure an air passage area of the intake chamber from the intake port to the ventilation hole, and it is possible to suppress an increase in air passage resistance.

According to the third and fourth aspects of the present invention, the flow of the air flowing from the intake port side to the ventilation hole side in the intake chamber is not limited to the flow flowing linearly from the intake port side to the ventilation hole side, but also to the flow rate. A flow that flows so as to pass around the side of the pore is also formed, and the blowing performance can be improved.

According to the fifth aspect of the present invention, the connection port is formed in a flat shape, so that the height of the main body frame and, consequently, the height of the entire air supply device are increased as compared with the case where the connection port is cylindrical. Can be further suppressed, and the air flowing from the intake port to the ventilation hole can flow into the ventilation hole from the widest possible range of the ventilation hole.

According to the sixth aspect of the present invention, it is possible to enlarge the air path while suppressing the height dimension of the main body frame, thereby preventing the air path resistance from increasing. In addition, since the duct connection side of the connection port is not extremely flat compared to the intake port side, there is also an advantage that the duct connected to the connection port does not need to have an extremely flat shape.

According to the seventh aspect of the present invention, the connection port is inserted into the connection port insertion hole of the mounting plate from the body frame side while the metal plate mounting plate and the plastic connection port are combined. Since it is configured to be attached to the mounting plate,
Even if a vertical or horizontal load is applied to the connection port from the duct side, there is an advantage that formation of a gap between the connection port and the mounting plate can be prevented as much as possible.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a longitudinal side view in an attached state.

FIG. 2 is a perspective view with a part cut away.

FIG. 3 is an exploded perspective view.

FIG. 4 is a perspective view showing a state in which a casing member is turned upside down.

FIG. 5 is a cross-sectional plan view of a main part.

FIG. 6 shows a second embodiment of the present invention, and is a perspective view of a mounting plate and a connection port.

FIG. 7 is an enlarged vertical sectional side view along the line XX in FIG. 6;

[Explanation of symbols]

1 is a room, 2 is a ceiling plate (ceiling), 3 is an opening, 5 is a mounting plate, 6 is a ceiling, 8 is a connection port, 9 is a duct, 12 is a main body frame, 13 is an intake port, and 15 is a casing member. , 16 is an intake chamber, 17a is a side wall, 18 is a fan casing, 20 is a bell mouth (vent), 21 is a wind guide, 27 is a motor, 28 is a rotating shaft, 30 is a fan, 32 is a rotation center axis, 33 is a fan device, 35 is an outlet, 36 is a decorative panel, 40 is a mounting plate, 41 is a connection port insertion hole, and 43 is a connection port.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 13/06 F24F 3/06 F24F 7/10 101 F24F 1/00

Claims (7)

(57) [Claims] 1. A body having an air inlet disposed below a ceiling with a lower surface facing an opening formed in a ceiling of a room, and having an air inlet on a side portion in communication with a duct provided behind the ceiling. A frame, an intake chamber provided in an upper part of the main body frame in communication with the intake port, a fan casing part provided in the main body frame so as to be located below the intake chamber, A ventilation hole provided between the intake chamber and the fan casing to allow them to communicate with each other; and an inclined surface provided at a lower portion of the intake chamber on the intake port side and gradually increasing from the intake port side to the ventilation hole side. A wind guide portion having a shape, an outlet for communicating the inside of the fan casing portion with the inside of the room, and a motor, and the motor is disposed in the fan casing portion in a state where a rotation center axis is directed vertically. To the motor Having a fan that is driven to rotate more, and by the blowing action of the fan, sucks the air on the duct side into the intake chamber through the duct and the intake port,
A fan device for supplying air in the intake chamber from the outlet to the inside of the room through the vent hole and the inside of the fan casing. 2. The air supply according to claim 1, wherein the width of the portion corresponding to the wind guide portion of the intake chamber in the horizontal direction is set so that the side of the vent hole is larger than the side of the intake port. apparatus. 3. A horizontal dimension between the side wall of the intake chamber and the peripheral edge of the vent hole, the dimension of the interval on one side in a direction intersecting the main flow direction of the air flowing from the intake port to the vent hole side. 2. The air supply device according to claim 1, wherein the distance is set to be larger than an interval dimension on the opposite side. 4. The air supply according to claim 1, wherein the center of the air inlet and the center of the air hole are shifted in a horizontal direction intersecting a main flow direction of the air flowing from the air inlet to the air hole. apparatus. 5. A cylindrical connection port having one end communicating with the intake port and the other end connected to the duct, on a side of the body frame,
The air supply device according to claim 1, wherein the connection port has a flat shape whose longitudinal direction is a horizontal direction along a side surface of the main body frame. 6. The connection port is characterized in that there is no or little expansion in the vertical direction from the connection side with the duct to the intake port side, and the connection port expands in the horizontal direction along the side surface of the main body frame. The air supply device according to claim 5, wherein 7. A mounting plate provided outside the side surface of the main body frame and having a connection port insertion hole, and is mounted on the mounting plate by being inserted into the connection port insertion hole from the main body frame side and having one end. The air supply device according to claim 1, further comprising: a cylindrical connection port that communicates with the intake port and the other end is connected to the duct.