JP2000104984A - Ceiling-mounted type air diffuser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive air diffuser which can be easily and stably mounted on a ceiling. SOLUTION: A body of the air diffused is constituted of a diffusing guide 15 for forming a guide cylinder and an air outlet 16 provided continuously at a lower end of the cylinder. A locking part 18 is provided at substantially symmetrical position to a central axis of the cylinder at the body. A root side 20a of a leaf spring 20 is locked to the part 18. An end of the spring 20 locked to the root side 20a has an elastic force to its flange 17 side. Accordingly, a ceiling plate 5A is elastically sandwiched between the flange 17 and the spring 20 capable of mounting the body 11 at the plate 5A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air blower used as a part of an air intake / exhaust system installed in a house or a building.

[0002]

2. Description of the Related Art Recent houses have become more airtight due to heavy use of aluminum sashes and improvements in construction methods. Among them, a house maker has proposed a highly airtight house with particularly high airtightness in order to improve the efficiency of cooling and heating. In such a highly airtight house, it is necessary to install an air intake / exhaust system for forcibly introducing outside air into the room and exhausting room air to outside the house.

FIG. 1 schematically shows an example of an intake and exhaust system. In FIG. 1, a total heat exchange unit 1 is arranged behind the ceiling. The unit 1 is connected to an exhaust duct 3 and an air supply duct 4 which extend outside through a wall 2. The total heat exchange unit 1 is provided with a suction port 6 facing the indoor space through a hole formed in the ceiling plate 5.
Further, an extension duct 7 is connected to the unit 1.

[0004] An air blower 8 is connected to the end of the extension duct 7. The air blower 8 is attached to a hole formed in the ceiling plate 5, and the outlet 9 faces the indoor space. When the intake / exhaust system is operated, air in the indoor space is sucked from the inlet 6 and fresh outside air is taken in from the air supply duct 4. Then, heat is exchanged between the sucked air and the taken outside air in the unit 1. Thereafter, the sucked air is discharged to the outside through the exhaust duct 4, and the taken-in and heat-exchanged outside air is supplied to the extension duct 7.
Through the outlet 9 of the air blower 8 into the indoor space.

As described above, the air intake / exhaust system requires the air blower 8 attached to the ceiling plate 5, and various air blowers have been conventionally proposed and put to practical use.

[0006]

However, when the conventional air blower is mounted on the ceiling plate 5, it is stopped with a screw from the indoor space side. It is difficult to adjust the air volume. It can be installed without using tools.
There are some cases where the state of attachment is unstable after being attached, and improvement has been desired.

Accordingly, an object of the present invention is to provide an air blower which can be easily attached to a ceiling during construction. Another object of the present invention is to provide an air blower that is stably mounted on a ceiling. Another object of the present invention is to provide an inexpensive air blower having a simple structure for mounting on a ceiling.

[0008]

According to the first aspect of the present invention, there is provided a guide cylinder having an air inlet at one end;
An outlet forming member that is connected to the other end of the guide tube and forms an outlet that widens in the blowing direction to diffuse and blow out air that enters from the air inlet and passes through the guide tube; A flange provided on the periphery of the outlet forming member, the upper surface of which is in contact with the lower surface of the ceiling plate when attached to the ceiling,
A pair of locking portions formed at positions substantially symmetrical with respect to the center axis of the guide tube, near the connecting position of the guide tube or the guide tube and the outlet forming member, and a root portion locked by the locking portion, The ceiling-mounted air blower is characterized in that the air blower extends in the flange direction and includes a pair of elastic holders having elastic force toward the flange.

According to a second aspect of the present invention, in the air blower according to the first aspect, the guide cylinder, the outlet forming member, the flange, and the locking portion are integrally formed of resin. It is a type of air blower. According to a third aspect of the present invention, in the air blower according to the first or second aspect, the locking portion has a locking hole, and the elastic holder is bent into a crank shape such that a root side is fitted into the locking hole. A ceiling-mounted air blower characterized by including an elongated metal leaf spring.

[0010] The invention according to claim 4 is the invention according to claims 1 to 3.
The air blower according to any one of the above, wherein the air outlet is provided with an air volume adjusting tool at the outlet. According to the first aspect of the invention, the fixing of the air blower to the ceiling can be performed by the pair of elastic holders. The base of the elastic holder is locked by the locking portion. At the time of attachment, a hand can be put into the guide cylinder from the outlet facing the indoor space, and the base side of the elastic holder can be operated. As a result, the ceiling plate is elastically sandwiched between the upper surface of the flange and the tip of the elastic holder, and the air blower can be attached to the ceiling in a stable state.

Further, at the time of mounting, it is only necessary to fit the air blower into the hole of the ceiling plate and perform the above operation, and it is possible to mount without requiring any tools or the like. In the configuration of the second aspect, the air blower is integrally formed of resin except for the elastic holder, so that it can be manufactured at a low cost. According to the third aspect of the present invention, the elastic holding member is made of a metal leaf spring, so that it can be manufactured at low cost.

According to the fourth aspect of the present invention, since the air outlet is provided with the air volume adjuster, the amount of air blown out from the air blower can be adjusted, and a comfortable blow state can be set.

[0013]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG.
It is the perspective view which looked at the air blower concerning one Embodiment of this invention from diagonally downward, and FIG. 3 is the perspective view which looked at it from diagonally upward. In each of the figures, the main body 11 and the air volume adjusting body 1 are shown.
2 are shown separated from each other.

Referring to FIGS. 2 and 3, the air blower according to this embodiment includes a main body 11 and an adjusting body 12. The main body 11 and the adjustment body 12 are each configured as an integrally molded product made of resin, but may be configured by combining separate members. The main body 11 is provided with a guide tube 13, and an upper end of the guide tube 13 is an air inlet 14 to which a duct or the like is connected. A blow-out guide 15 is provided at the lower end of the guide cylinder 13. The blowing guide 15 extends in a direction crossing the center axis of the guide cylinder 13. More specifically, in order to diffuse and blow out the air passing through the guide tube 13 from the air inlet 14, the air spreads greatly in the air blowing direction,
Is formed. A main body 11 is provided on the periphery of the blowing guide 15.
17 that spreads out horizontally when it is placed on the ceiling
Is provided.

In this embodiment, the outlet guide 15 has a substantially square planar shape, but may have a planar shape such as a circular shape or an elliptical shape. Two pairs of locking portions 18 and 19 are provided near the connecting position of the guide tube 13 and the blow-out guide 15 at positions substantially symmetric with respect to the center axis of the guide tube 13. One pair of locking portions 18 is provided with the blowing guide 15.
It is provided relatively above when viewed from above. The other pair of locking portions 19 is provided closer to the blowing guide 15 than the one pair of locking portions 18. The locking portion 18 has locking holes 18a and 18b, and the locking portion 19 has locking holes 19a and 19b.

As shown in FIG. 3, the roots of a pair of leaf springs 20 are locked to one pair of locking portions 18 or the other pair of locking portions 19. In FIG.
Although a state in which the leaf spring 20 is locked to both the locking portion 8 and the locking portion 19 is shown, actually, as described above, either one of the locking portions 18 or 19 is used, and Both are not used at the same time.

The leaf spring 20 is locked by the locking portion 18 as follows. That is, a fitting shape 20b bent in a crank shape is formed on the base side 20a of the leaf spring 20. The root side 20a is inserted into the engagement hole 18a, and is attached so that the tip of the fitting shape 20b projects outward from the engagement hole 18b. As a result, the leaf spring 20 has a shape in which the root side 20a is fixed to the engaging portion 18 and an elastic force toward the flange 17 is generated on the distal end portion 20c side.

The locking portion 19 is similarly locked, the base 20a of the leaf spring 20 is inserted into the locking hole 19a, and the tip of the fitting shape 20b projects outward from the locking hole 19b. Have been to be. FIG. 4 is an illustrative sectional view showing a state in which the main body 11 is attached to a hole 21 formed in the ceiling plate 5. The cross-sectional view of the left half of FIG. 4 shows a case where it is attached to a thick ceiling plate 5A, and the cross-sectional view of the right half of FIG. 4 shows a case where it is attached to a thin ceiling plate 5B.

In general, the thickness of the ceiling plate 5 is determined by a standard, and there are two types, 9.5 mm or 12.5 mm. The air blower according to this embodiment is provided with two pairs of locking portions so that the air blower can be properly attached to the thick ceiling plate 5A and the thin ceiling plate 5B. When it is attached to the board 5A, an engaging portion 18 is used, and when it is attached to the thin ceiling plate 5B, an engaging portion 19 is used.

Referring to FIGS. 3 and 4, an example in which the locking portion 18 is used will be described. The leaf spring 20 whose root side 20a is locked by the locking portion 18
Extending in the spreading direction. And the tip side 20c
Opposes the flange 17 and generates an elastic force on the flange 17 side. The main body 11 is attached such that the upper surface of the flange 17 contacts the lower surface of the ceiling plate 5A. For this reason, the ceiling plate 5A is elastically sandwiched between the flange 17 and the distal end side 20c of the leaf spring 20, so that the body 11
Is attached to the ceiling plate 5A.

The mounting method will be described more specifically. First, the main body 11 is fitted into the hole 21 formed in the ceiling plate 5A from below (inside the room). The leaf spring 21 is inserted from the outlet 16 side, and the leaf spring 20 is inserted into the locking hole 18a on the tip side 2.
0c so that the leaf spring 20 extends outward from the guide cylinder 13. And the root side 20 of the leaf spring 20
The fitting shape 20b of a is fitted into the locking hole 18a. The fitting shape 20b is bent in a crank shape. Therefore, when the fitting shape 20b is fitted into the engagement hole 18b, the leaf spring 20
Is fixed to the main body 11 while the base side 20a of the
A downward elastic force is generated on the distal end side 20c. The ceiling plate 5A is pressed by the elastic force, and the leaf plate 20 and the upper surface of the flange 17 elastically sandwich the ceiling plate 5A. Thereby, the main body 11 is firmly attached to the ceiling plate 5A.

The mounting method using the locking portion 19 is the same. Next, referring again to FIG. 2 and FIG.
Will be described. The adjusting body 12 includes a wind direction adjusting plate 25 having a square planar shape, and two pairs of connecting plates 26 and 27 extending upward at right angles from the upper surface of the wind direction adjusting plate 25. The wind direction adjusting plate 25 is smaller than the maximum opening area of the outlet 16 and is sufficiently larger than the opening of the guide cylinder. When the outlet 16 is, for example, circular, the wind direction adjusting plate is also made circular to resemble the shape of the outlet 16. Each of the connecting plates 26 and 27 has an arc-shaped cross section parallel to the wind direction adjusting plate 25. When the cross sections of the four connecting plates 26 and 27 are connected, a circle that contacts the inner peripheral surface of the guide cylinder 13 is formed. Shape. A passage 28 having a predetermined width is formed between the connecting plates 26 and 27. The air that has passed through the guide tube 13 passes through this passage 28.

One pair of the connecting plates 27 is formed with vertical irregularities 29 on the outer surface thereof. The portion where the unevenness 29 is formed is surrounded by two parallel cuts 30 cut from the upper end of the connecting plate 27 so as to provide elasticity to the connecting plate 27. FIG. 5 is an illustrative view showing a cross-sectional structure in a state where the main body 11 and the adjusting body 12 are combined. On the inner peripheral surface of the guide cylinder 13, one or a plurality of small projections 31 arranged vertically are formed so as to face the irregularities 29 formed on the adjustment body 12. Therefore, when the connecting plates 26 and 27 of the adjusting body 12 are inserted into the guide cylinder 13 from the outlet 16, the unevenness 29 formed on the outer surface of the connecting plate 27 and the small protrusion 31 in the guide cylinder 13 mesh with each other. Thus, the adjusting body 12 is held at the inserted position with respect to the main body 11. Further, the adjustment body can be changed vertically with respect to the main body 11.

When the adjusting body 12 is slid upward, the connecting plates 26 and 27 extending from the lower end of the guide cylinder 13 into the air outlet 16 are shortened. Therefore, the opening area of the passage 28 having the predetermined width formed between the connecting plates 26 and 27 is also reduced. Conversely, when the adjusting body 12 is slid downward, the connecting plates 26 and 27 extending from the lower end of the guide cylinder 13 into the air outlet 16 become longer, and the passage 28 formed between the connecting plates 26 and 27 becomes longer. Has a larger opening area. Therefore, the opening area of the passage 28 can be changed by sliding the adjustment body 12 in the vertical direction and holding the adjustment body 12 at a desired position.
6 can be varied.

The adjustment body can be slid up and down in the vertical direction and the position thereof can be easily adjusted by a human hand from the indoor side. In the above description, two pairs of connecting plates 26, 2
Although the example in which the vertical unevenness 26 is formed on the outer surface of the connecting plate 27 forming one pair of 7 is shown, the vertical unevenness 29 is formed on the outer surface of all the connecting plates 26 and 27. It may be formed. In this case, one or a plurality of small protrusions 31 may be formed on the inner surface of the guide cylinder 13 so as to face each of the irregularities 29.

When the adjusting body 12 is inserted into the guide tube 13, the periphery of the wind direction adjusting plate 25 of the adjusting body 12 is
It is necessary to position the adjustment body 12 in the insertion direction so as to be parallel to the periphery of the adjustment body 6. To facilitate this positioning, a positioning guide may be provided on the inner peripheral surface of the guide tube 13. The positioning guide can be constituted by a small projection projecting to a position corresponding to the passage 28 when the adjusting body 12 is inserted.

The air blower according to the present invention can be used as an air blowout port for an air conditioner, in addition to being applicable to the above-described intake / exhaust system. In particular, it is possible to provide an air blower suitable for providing an air blow outlet at a position distant from the air conditioner body. The present invention is not limited to the contents of the embodiment described above, and various changes can be made in the present invention within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating an example of an intake / exhaust system.

FIG. 2 is a perspective view of the air blower according to the embodiment of the present invention as viewed obliquely from below.

FIG. 3 is a perspective view of the air blower according to the embodiment of the present invention as viewed obliquely from above.

FIG. 4 is an illustrative sectional view showing a state where a main body is attached to a hole formed in a ceiling plate.

FIG. 5 is an illustrative view showing a cross-sectional structure in a state where the main body and the adjustment body are combined;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body 12 Adjusting body 13 Guide cylinder 14 Air inlet 15 Blow-out guide 16 Blow-out port 17 Flange 18, 19 Locking part 18a, 18b, 19a, 19b Locking hole 20 Leaf spring 20a Root side 20b Fitting shape 20c Tip side 25 Wind direction adjusting plate 26, 27 Connecting plate 28 Passage 29 Irregularity 31 Small protrusion

Claims (4)

[Claims] 1. A guide tube (13) having an air inlet (14) at one end, and an air inlet (14) connected to the other end of the guide tube (13).
An air outlet forming member (15) for forming an air outlet (16) that widens greatly in the air blowing direction in order to diffuse and blow out the air that enters from and passes through the guide cylinder (13).
A flange (17) provided on the periphery of the outlet forming member (15), the upper surface of which is in contact with the lower surface of the ceiling plate when attached to the ceiling;
And a pair of locking members formed near the central position of the guide cylinder (13) in the vicinity of the guide cylinder (13) or the connection position of the guide cylinder (13) and the outlet forming member (15). Department (1
8, 19), and the base side (20a) is locked by the locking portions (18, 19),
A front end side (20c) extending in the direction of the flange (17), and including a pair of elastic holders (20) having an elastic force toward the flange (17); vessel. 2. The air blower according to claim 1, wherein the guide tube (13), the outlet forming member (15), the flange (17) and the locking portions (18, 19) are integrally formed of resin. A ceiling-mounted air blower characterized by the following features: 3. The air blower according to claim 1, wherein the locking portions (18, 19) have locking holes (18a, 18b, 19).
a, 19b), and the elastic holder (20) has a locking hole (18a, 18b, 19a, 19) at the base side (20a).
b) A ceiling-mounted air blower, comprising a metal long leaf spring (20) bent into a crank shape (20b) so as to fit in (b). 4. The air blower according to claim 1, wherein an air flow adjusting device (12) is attached to the air outlet (16). vessel.