JPH07324801A - Outlet grille - Google Patents

Abstract

PURPOSE:To provide an outlet grille which is suited for the air conditioning of the type having outlets in the floor to keep room temperature uniform and supply air in a desired direction. CONSTITUTION:An outlet grille which when set in a floor Al lies parallel thereto has an outlet part 1 with a number of substantially rectangular outlet holes 3 and an air-current intake part 4 adjoining the outlet part 1 under it. The outlet holes 3 are formed with an inclination by a prescribed amount from a reference line which is perpendicular to the surface of the floor. A plurality of outlet plates form the outlet holes 3 in such a manner as to range a prescribed number of them with the longitudinal direction of each in the same direction so as to make the air come out in a spiral flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blowout grill disposed on the floor of a room suitable for floor blowout air conditioning.

[0002]

2. Description of the Related Art Recently, in office buildings and the like, a space is formed under the floor, and warm air or cold air is supplied to this space, and the warm air or cold air is blown into the room from a blowout grill formed on the floor surface. The air conditioning in the room is carried out by putting it out. FIG. 13 shows an air conditioning system using a conventional floor blowing grill.In this system, warm air or cold air from the air conditioner C passes through the space formed in the lower part A2 of the floor A and is placed on the floor. It blows out from the blowing grill B into the room. In addition, in FIG. 13, the outlet grill B is shown as a tapered opening.

By the way, an air-conditioning system using such a blowing grill mainly blows out warm air or cold air by utilizing a static pressure difference. When the air is blown out by using this static pressure difference, in order to make the temperature of the room uniform, the diffusibility of the airflow blown from the blowout grill into the room is required. To meet such demands, for example,
There is a blowout grill B shown in 14 and Figure 15. This one is
A blow-out portion 1 which is arranged in parallel to the floor surface and is provided with a large number of substantially disc-like blow-out holes 3
And an airflow intake part 4 continuously provided below the blowout part 1, and a swirl-type blowout grill having a vent hole 7 into which the airflow swirls and flows into the side surface of the airflow intake part 4. Therefore, the airflow is blown into the room while swirling from the blowout hole 3. This blow-out grill B has a good diffusion of the air flow blown into the room, and has a high uniformity of temperature distribution in the vertical direction in the room.

On the other hand, there is also an axial-flow type blowing grill as one capable of blowing a strong air flow in a constant blowing direction.
As disclosed in Japanese Examined Patent Publication No. 4-2860, this is a substantially flat plate-like blow-out portion 1 positioned parallel to the floor surface when it is placed on the floor, and is provided continuously below the blow-out portion 1. And an air flow intake part 4 for taking in an air flow (FIGS. 16 and 17). The blow-out part 1 has a large number of rectangular blow-out holes 3 penetrating in a direction orthogonal to the floor surface, and these are divided into four groups, and the longitudinal directions of the blow-out holes 3 are orthogonal to each other between adjacent groups. Is formed. This blowout grill performs air conditioning in the room by the airflow going straight from the blowout section 1 in a fixed direction.

[0005]

In the former swivel-type blowing grill described above, since the air flow swirls, the air flow blown into the room has a good diffusibility, and the temperature distribution in the vertical direction in the room is excellent. However, the airflow cannot be blown out in the desired blowing direction. Further, the latter axial flow type grill is excellent in obtaining a heating or cooling effect by the direct air flow because the air flow goes straight in a fixed direction.
Due to the poor diffusion of the air flow, the vertical temperature distribution in the room becomes large especially during cooling, which may impair comfort.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a blowout grill suitable for floor blowout air conditioning, in which the temperature distribution in the room is small and a desired blowout direction can be obtained. That is.

[0007]

In order to solve the above-mentioned problems, the blow-out grill according to claim 1 is arranged in parallel to the floor when it is placed on the floor and has a generally rectangular blow-out hole. In a blowout grill having a large number of blowout portions and an airflow intake portion continuously provided below the blowout portion, the blowout holes are formed by inclining a predetermined amount from a reference line orthogonal to the floor surface. In addition, the air flow blown out in the longitudinal direction of the blowout holes is distributed and formed so as to be a swirl flow.

According to a second aspect of the present invention, there is provided a blowout grill comprising a plurality of blowout plates in which a predetermined number of the blowout holes are aligned in the same direction.

Further, in the blowout grill according to claim 3, the blowout plate according to claim 1 or 2 is detachable and the longitudinal direction of the blowout hole can be changed.

The blowout grill according to a fourth aspect of the present invention is configured such that the blowout plate according to the first or second aspect is provided so as to be rotatable.

A blowout grill according to a fifth aspect is a box-like body having the airflow intake section according to any one of the first to fourth aspects as one side, and a vent hole through which the airflow flows is formed on a side surface thereof. In addition to providing the damper, the ventilation hole is provided with a damper capable of adjusting the inflow amount of gas.

[0012]

According to the structure of claim 1, the blowout hole is formed by inclining a predetermined amount from a reference line orthogonal to the floor surface,
In addition, since the air flow that blows out in the longitudinal direction of the blowout holes is formed so as to be a swirl flow, various types of swirl flow are generated at an angle that is inclined by a predetermined amount from a reference line that is orthogonal to the floor surface. Because it blows out in the direction of, the ventilation resistance of the part where the air flow passes is small and the diffusion of the air flow is high,
Excellent uniformity of vertical temperature distribution in the room.

Further, according to the second aspect of the present invention, the blowout hole is formed by a plurality of blowout plates in which a predetermined number of blowout holes are aligned in the same direction.
Since the straightness of the air flow is increased, the action of claim 1 is promoted.

Further, according to the structure of claim 3, in addition to the operation of claim 1 or 2, the blowing plate is detachable and the blowing direction can be changed, so that the blowing direction of the air flow can be changed as desired. It is possible to obtain a free blowing direction, such as the direction of or not the direction of the body.

Further, according to the structure of claim 4, in addition to the function of claim 1 or 2, since the blowing plate is rotatable, the blowing direction can be easily changed, so that the air conditioning can be adjusted. It's easy.

According to the structure of claim 5, in addition to the effect of any one of claims 1 to 4, a damper capable of adjusting the inflow amount of gas is provided in the ventilation hole in the air intake part. As a result, the action of the dynamic pressure of the gas is reduced, and uniform blowout from the blowout portion by static pressure can be obtained.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a blowout grill suitable for floor blowout air conditioning of the present invention will be described below with reference to FIGS. 1 to 3 are views showing a blowout grill of this embodiment, and FIGS. 4 and 5 are views showing a case where the position of the blowout plate of the blowout portion of the blowout grill is changed.
Members and parts having the same basic functions as those of the conventional example are designated by the same reference numerals.

Reference numeral 1 denotes a blowout portion, which blows out an airflow into the room, is made of metal and is formed in a substantially flat plate shape, and is provided in parallel with the floor surface A1 of the floor A in the room. This blowout part 1
Is a plurality of substantially rectangular blow-out holes 3 each having a substantially rectangular cross-section and formed by a bar 2 that is inclined by a predetermined amount from a reference line orthogonal to the floor surface A1. Blowing plates whose longitudinal directions are aligned in the same direction
It is composed of 1a, 1a, 1a, 1a, and is placed on the upper part of the air flow intake section described later. Also, these four blowing plates 1a, 1a, 1a, 1a
Are arranged so that the blowing directions are different from each other by 90 degrees. Furthermore, the blow-off plates 1a, 1a, 1a, 1a are removed from the airflow intake part, lifted upward, rotated, and placed on the airflow intake part again, so that the blowout plates 1a, 1a, 1a, 1a It is possible to change the direction.

Reference numeral 4 is an airflow intake portion, which blows out the airflow.
It is made of metal and is formed into a substantially box body. The upper surface 4a has a step portion 5 and a bar 6, on which the blowing portion 1 is placed. The step portion 5 is a step provided inside the entire circumference of the upper surface 4a, and the bar 6 is a long bar provided from one end of the upper surface 4a to divide the upper surface 4a. The blowing part 1 is placed on the step 5 and the bar 6. Further, one side surface 4b of the airflow intake portion 4 has a substantially rectangular ventilation hole 7 into which the airflow flows.

With such a structure, the airflow that has flowed through the lower portion A2 of the floor A into the airflow intake section 4 from the ventilation hole 7 is blown out from the blowout plates 1a, 1a, 1a, 1a of the blowout section 1. Hole 3,
It is blown into the room from 3, 3. At that time, if the blowing direction is selected as shown in FIG. 2, the blowing directions are different by 90 degrees, so that the swirling flow spreads widely in the room. In addition, as shown in FIG. 4, the blowing direction is such that the blowing plates 1a, 1a, 1a, 1a are removed from the airflow intake part 4, rotated, and placed again on the airflow intake part 4 so that the blowout holes 3 face. By changing it, the blowing direction can be selected arbitrarily.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. In this embodiment, the blowing portion is formed of four disc-shaped blowing plates.

Reference numeral 10 is a blow-out portion, which blows out an air flow into the room as in the first embodiment, and is made of four substantially flat blow-out plates 10a, 10a, 10a made of metal and having a circular outer shape. , 10a
And is arranged in parallel with the floor surface A1 of the floor A in the room. The blow-off plates 10a, 10a, 10a, 10a are a plurality of blow-out holes having a substantially long cross-section and formed by a plurality of bars 2 which are inclined by a predetermined amount from a reference line orthogonal to the floor surface A1.
It has 3 and is placed on the upper part of the air flow intake section described later. In addition, the upper surface 10b of the blowing plates 10a, 10a, 10a, 10a
Has a flange portion 11 that extends outward along the entire circumference.

Reference numeral 12 denotes an air flow intake portion, which guides the air flow to the air outlet portion 10 as in the first embodiment, and is made of metal and formed in a flat plate shape. The air flow intake section 12 has a cylindrical shape.
It has individual ventilation ducts 13, the blow-out portion 10 is inserted into the ventilation duct 13, and the flange portion 11 is attached to the upper surface 12a of the airflow intake portion 12.
By blowing on the blower plate 10a, 10a, 10
The a and 10a are configured to be rotatable.

With such a structure, the airflow flowing through the lower portion A2 of the floor A into the airflow intake section 4 through the ventilation hole 7 is blown out into the room from the blowout section 10. The blowing direction of the air flow can be arbitrarily selected by rotating the blowing plates 10a, 10a, 10a, 10a of the blowing unit 10.

FIGS. 8 and 9 show a modification of the second embodiment. FIG. 8 shows that the blow-out plates 10a, 10a, 10a, 10a of the blow-out portion 10 can be rotated by using a holder 14 which is a separate member. Is something
In FIG. 9, the air flow intake portion 12 is formed into a box-like shape as in the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIGS. In this embodiment, a damper is provided in the ventilation hole of the air intake part.

Reference numeral 22 denotes an air flow intake portion, which guides the air flow to the air outlet portion 1 as in the first embodiment, and is made of metal and is formed in a substantially box-like shape. Each side surface 22b of this air flow intake part 22
Four rectangular ventilation holes 23 are provided side by side.
Also, on the back side of the vent hole 23, it is possible to move left and right,
There is a flat plate-shaped damper 25 having second ventilation holes 24 with the same pitch as the ventilation holes 23.

With this structure, the damper
By moving 25 to the left and right and adjusting it, the inflow amount of the gas passing through the ventilation hole 23 can be adjusted.

FIG. 12 is a schematic view of an air conditioning system using this third embodiment, in which a plurality of floor blowing air conditioning grills B are arranged on a floor A and an air flow is sent from an air conditioner C. . In this figure, where "closed" is written, the vent holes on the side surface 22b of the air intake part 22 of the outlet grill B are shown.
Where 23 is closed and not marked "closed" is where the vent holes 23 on side 22b are open. By closing the ventilation hole 23 only at a certain place in this way, the influence of the dynamic pressure of the airflow under the floor A can be reduced, and the airflow can be blown out into the room with static pressure, and a uniform airflow can be obtained. can get.

In the embodiment, the case where the number of blowing plates is four has been described, but the present invention is not limited to this.
At least one is enough. Further, although the material of the blowout portion and the airflow intake portion is made of metal, the material is not limited to this and may be made of resin or the like.

[0031]

In the blowout grill according to the first aspect of the present invention, the blowout hole is formed by inclining the reference line orthogonal to the floor surface by a predetermined amount, and the airflow blown in the longitudinal direction of the blowout hole becomes a swirl flow. The airflow blows out in various directions that create a swirling flow at an angle that is tilted by a predetermined amount from the reference line that is orthogonal to the floor surface, so that the airflow resistance at the part where the airflow passes. As the airflow is less diffused and the diffusivity of the airflow is higher, the uniformity of the upper and lower temperature distribution in the room is excellent, which improves comfort.

In the blowout grill according to the second aspect of the invention, the blowout holes are formed by a plurality of blowout plates in which a predetermined number of the blowout holes are aligned in the same direction, so that the straightness of the air flow is increased. Therefore, the effect of claim 1 is promoted.

In addition to the effect of claim 1 or 2, the blowout grill according to claim 3 has a blowout plate that can be attached and detached and the blowout direction can be changed. Since you can get a free blowing direction, such as setting it to the direction or not to the body,
Usability is improved.

In addition to the effect of claim 1 or 2, the blowout grill according to claim 4 can easily change the blowout direction because the blowout plate can be rotated, so that the air conditioning can be easily adjusted. Therefore, usability is improved.

In addition to the effect according to any one of claims 1 to 4, the blowout grill according to claim 5 is provided with a damper capable of adjusting the inflow amount of gas in the ventilation hole in the airflow intake part. As a result, the action of the dynamic pressure of the gas is reduced, and uniform blowout from the blowout portion by static pressure is obtained, so comfort is further improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an outlet grill showing a first embodiment of the present invention.

FIG. 2 is a plan view of the outlet grill.

FIG. 3 is a perspective view of the outlet grill.

FIG. 4 is another plan view of the outlet grill.

FIG. 5 is another perspective view of the outlet grill.

FIG. 6 is a cross-sectional view of a blowout grill showing a second embodiment of the present invention.

FIG. 7 is a plan view of the outlet grill.

FIG. 8 is a modification of the second embodiment.

FIG. 9 is another modification of the second embodiment.

FIG. 10 is a perspective view of a blowout grill showing a third embodiment of the present invention.

FIG. 11 is a plan view of the damper.

FIG. 12 is an air conditioning system diagram in which the blowout grill is arranged on the floor.

FIG. 13 is a diagram of an air conditioning system using a blowout grill showing a conventional example of the present invention.

FIG. 14 is a cross-sectional view of the blowout grill.

FIG. 15 is another cross-sectional view of the blowout grill.

FIG. 16 is a plan view of another blowout grill.

FIG. 17 is a cross-sectional view of another blowout grill.

[Explanation of symbols]

 A Floor A1 Floor B Air outlet grill C Air conditioner 1 Air outlet 1a Air outlet plate 2 Crosspiece 3 Air outlet 4 Airflow intake portion 5 Step 6 Bar 7 Vent hole 10 Air outlet 10a Air outlet plate 11 Collar portion 12 Airflow inlet 13 Ventilation duct 22 Airflow intake 23 Ventilation hole 24 Second ventilation hole 25 Damper

Claims (5)

[Claims] 1. A blow-out portion which is arranged in parallel to a floor surface when provided on the floor surface and has a large number of substantially rectangular blow-out holes, and an air-flow intake portion which is continuously provided below the blow-out portion. In the blowout grill provided with, the blowout holes are formed by inclining a predetermined amount from a reference line orthogonal to the floor surface, and the airflow blowing in the longitudinal direction of the blowout holes is distributed so as to be a swirl flow. A blow-out grill characterized by being formed. 2. The blowout grill according to claim 1, wherein the blowout holes are formed by a plurality of blowout plates in which a predetermined number of the blowout holes are aligned in the same direction. 3. The blowout grill according to claim 1, wherein the blowout plate is detachable and the longitudinal direction of the blowout hole can be changed. 4. The blowout grill according to claim 1, wherein the blowout plate is provided so as to be rotatable. 5. The damper, wherein the airflow intake portion is a substantially box-shaped body having a blowout portion as one surface, and a ventilation hole through which an airflow flows is provided on a side surface thereof, and a gas inflow amount can be adjusted in the ventilation hole. The blowout grill according to claim 1, further comprising: