JP7246594B2 - Straightening chamber and blower - Google Patents

Description

TECHNICAL FIELD The present invention relates to a straightening chamber and a blower installed in a ceiling space of a building.

2. Description of the Related Art Conventionally, in buildings such as office buildings and public facilities, ceiling-embedded duct type air conditioners have been used. Such an air conditioner includes an air conditioner arranged in the ceiling space and a duct connected to the air conditioner. It may also include a chamber box that is connected to the duct and adjusts the air volume and direction from the air conditioner.

As such a technique, for example, Japanese Patent Laying-Open No. 2011-190968 (Patent Document 1) can be cited. Patent Literature 1 discloses an air blower in which a plurality of air blowers having electric blades are provided in a chamber box.

JP 2011-190968 A

The air blower of Patent Document 1 has a plurality of fans in the chamber box, rotates the blades of the fans, and blows out conditioned air toward the indoor space, so the air volume in the indoor space cannot be made uniform. . In addition, when the conditioned air of the air conditioner is not sent from above into the chamber box as in Patent Document 1, but is sent from the side into the chamber box, the air volume is large on the wall side where the conditioned air collides. , the air volume of the conditioned air in the chamber box may be uneven, such as the air volume being small on the near side.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and an object of the present invention is to provide a straightening chamber and an air blower capable of uniforming the air volume in an indoor space.

A rectifying chamber according to one aspect of the invention is provided in the ceiling space of a building. The rectifying chamber includes a top wall, a side wall, and a bottom wall, with an air inlet provided in the side wall for receiving conditioned air sent from the air conditioner, and an air conditioning duct provided in the bottom wall and attached to the ceiling. and an air outlet for sending out conditioned air, extending in a direction intersecting the introduction direction of the conditioned air introduced from the air inlet, provided in a plurality of stages with respect to the introduction direction, and the center serving as a path for the conditioned air. It has upper and lower blast plates arranged up and down so that

The air outlet is provided with a louver having a wind direction plate arranged so as to intersect the longitudinal direction of the air force plate. Symmetry is desirable.

It is desirable that the outer end portion of the wind direction plate is provided with a guide portion for sending the air-conditioned air along the upper surface of the air-conditioning duct.

Preferably, the air inlet is provided with a perforated plate with a plurality of holes.

A blower device according to an aspect of the present invention is a ceiling-embedded type. The blower includes an air conditioner installed in the ceiling space of the building, a rectifying chamber installed in the ceiling space and connected to the air conditioner, and an air conditioning duct installed in the indoor space, positioned below the rectifying chamber and extending in the longitudinal direction. Prepare. The rectifying chamber includes a top wall, a side wall, a bottom wall, an air inlet provided on the side wall for receiving conditioned air sent from an air conditioner, and a bottom wall provided for air conditioning ducts attached to the ceiling. and an air outlet for delivering air. The air-conditioning duct extends in a direction intersecting the introduction direction of the conditioned air introduced from the air inlet.

According to the straightening chamber and the air blower of the present invention, the air volume in the indoor space can be made uniform.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the schematic structure of the air blower which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows schematic structure of the air blower which concerns on embodiment of this invention. It is a figure which shows a mode that the air blower which concerns on embodiment of this invention is provided in the office. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows schematic structure of the air blower which concerns on embodiment of this invention. FIG. 2 is a front view showing a straightening chamber of the blower according to the embodiment of the present invention; It is a figure which shows the straightening chamber of the air blower which concerns on embodiment of this invention, (a) is a perspective view seen from diagonally upward, (b) is a perspective view seen from diagonally downward. 6A is a cross-sectional view taken along line VII-VII of FIG. 5, and FIG. It is a figure which takes out and shows the blast plate used for a straightening chamber, (a) is a perspective view, (b) is a front view. FIG. 10A is a cross-sectional view taken along line IX-IX in FIG. 9, and FIG. 10B is a bottom view. It is a figure which extracts and shows the wind direction board used for a straightening chamber, (a) is a perspective view, (b) is a front view. FIG. 7B is a diagram corresponding to FIG. 7A, and is a diagram for explaining the flow of conditioned air in the rectifying chamber. FIG. 9B is a diagram corresponding to FIG. 9A, and is a diagram for explaining the flow of conditioned air in the rectifying chamber.

An embodiment of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

<Outline of blower>
A blower device 1 according to the present embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is referred to as the vertical direction, the direction indicated by the arrow A2 in FIGS. 1 and 2 is referred to as the lateral direction, and the direction indicated by the arrow A3 in FIG. 2 is referred to as the front-rear direction. Arrows in FIGS. 2 and 4 indicate the flow of conditioned air. In addition, in FIG. 4, illustration of the ceiling 101 is omitted for easy understanding.

Blower device 1 according to the present embodiment is installed, for example, in buildings such as office buildings and public facilities. The air blower 1 is of a ceiling-embedded type, and includes an air conditioner 2, a connecting duct 4, and a rectifying chamber 3 provided in a ceiling space 100 of a building, and an air conditioning duct 5 provided in an indoor space 102.

The air conditioner 2 includes an air conditioner body 21 and a box-shaped housing 22 that covers the air conditioner body 21 . The air conditioner main body 21 can use a general air conditioner, such as a duct type air conditioner, a ceiling cassette type air conditioner, a ceiling cassette type air cleaner, and the like. A connection duct 4 extending in the left-right direction is connected to a side surface of the housing 22 . The air conditioner 2 is connected to the straightening chamber 3 via a connecting duct 4 . In this embodiment, the rectifying chamber 3 is positioned on the side of the air conditioner 2 . This arrangement is effective when the height of the ceiling space 100 is low, and since the air conditioner 2 is positioned on the ceiling 101 rather than on the air conditioning duct 5, the air conditioner 2 can be easily inspected. .

A connection duct 4 is connected to a side surface of the straightening chamber 3 , and an air conditioning duct 5 is positioned below the straightening chamber 3 . As shown in FIG. 4, the rectifying chamber 3 changes the flow direction of the conditioned air from the air conditioner 2 from the horizontal direction (the direction indicated by the arrow A2) to the vertical direction (the direction indicated by the arrow A1), and furthermore the direction of flow in the front-back direction (the direction indicated by the arrow A1). direction indicated by arrow A3). Details of the rectifying chamber 3 will be described later.

Now, with particular reference to FIGS. 2 and 3, the indoor space 102 of the building will be described. The indoor space 102 is a space surrounded by a first wall portion 103 and a second wall portion 104 that are arranged to face each other. A plurality of desks 106, a plurality of sets of chairs 107, a bookshelf (partition shelf) 108, and the like are arranged in the indoor space 102, for example, like a general office.

A plurality of air-conditioning ducts 5 are arranged along the ceiling 101 of the indoor space 102 and send the conditioned air sent out from the rectifying chamber 3 to the indoor space 102 . The air-conditioning duct 5 extends in the longitudinal direction, and specifically extends from the vicinity of the first wall portion 103 to the vicinity of the second wall portion 104 . In other words, the plurality of air conditioning ducts 5 extend perpendicular to the direction in which the first wall 103 and the second wall 104 extend. A plurality of air-conditioning ducts 5 are arranged in parallel, for example, at intervals of 6 to 8 m.

As shown in FIGS. 1 and 4, the air conditioning duct 5 has a pair of side portions 51, a bottom portion 54 connecting the pair of side portions 51, and an extension portion 53 projecting sideways from the bottom portion 54. . Tip openings 56 are provided at both ends of the air conditioning duct 5 in the longitudinal direction. The tip opening 56 sends out the conditioned air sent out from the straightening chamber 3 toward the first and second wall portions 103 and 104 . A plurality of side openings 55 are provided at intervals in the side portion 51 of the air conditioning duct 5 . The side openings 55 send the conditioned air delivered from the straightening chamber 3 to the air-conditioning ducts 5 between the adjacent air-conditioning ducts 5, that is, in a direction substantially perpendicular to the blowing direction. Although the bottom portion 54 is formed in a flat shape, the bottom portion 54 is not limited to this, and may be formed in an arc shape, for example.

As shown in FIG. 3 , the air conditioning duct 5 is arranged directly above the partition shelf 108 of the indoor space 102 . As a result, the conditioned air sent out from the blowing opening 15 of the air conditioning duct 5 does not directly reach the vicinity of the occupants of the indoor space 102, but leaves the air conditioning duct 5 via the partition shelf 108 of the indoor space 102. It reaches the occupants of the location as a pleasant breeze.

<Regarding the rectification chamber>
The rectifying chamber 3 will be described in detail with reference to FIGS. 4 to 10. FIG. As described above, the rectifying chamber 3 is provided between the air conditioner 2 and the air conditioning duct 5, and changes the flow direction of the conditioned air from the air conditioner 2 from the horizontal direction to the vertical direction, and further changes it to the front-back direction. . Although the illustration of the rectifying chamber 3 is simplified in FIG. 4, the outline of the rectifying chamber 3 is as shown in FIGS. 5 to 10. FIG.

As shown in FIG. 5 , the rectifying chamber 3 generally comprises a first chamber section 30 and a second chamber section 60 located below the first chamber section 30 . The interiors of the first and second chamber sections 30 and 60 are both hollow, and the interiors of the first chamber section 30 and the interiors of the second chamber section 60 communicate with each other.

First, the first chamber section 30 will be described with reference to FIGS. 6 to 8. FIG. The first chamber section 30 includes a top wall 31, first to fourth side walls 32a to 32d, and a bottom wall . In FIG. 7B, the upper blast plate 40 and the bottom wall 34 are indicated by broken lines.

As shown in FIG. 6( a ), the first side wall 32 a of the first chamber section 30 is provided with an air inlet 33 for receiving conditioned air sent from the air conditioner 2 . The air inlet 33 is an opening provided on substantially the entire surface of the first side wall 32a. In this embodiment, the air inlet 33 is provided with a perforated plate having a plurality of holes. The perforated plate is, for example, a net made by weaving punching metal or wire into a square shape, but it may also be a plate material having a plurality of small holes (through holes). By providing a perforated plate at the air inlet 33, the conditioned air from the air conditioner 2 can be diffused and sent into the rectifying chamber 3 in a uniform state.

In addition, as shown in FIG. 6B, the bottom wall 34 of the first chamber section 30 is provided with an air outlet 35 for sending air-conditioned air to the air-conditioned duct 5 attached to the ceiling 101 . The air outlet 35 is an opening provided on substantially the entire surface of the bottom wall 34 . By providing the air inlet 33 in the first side wall 32a and the air outlet 35 in the bottom wall 34, the blowing direction of the conditioned air from the air conditioner 2 can be changed.

As shown in FIG. 7, the ceiling wall 31 is attached with a plurality of upper blast plates 41, and the bottom wall 34 is attached with a plurality of lower blast plates 45. As shown in FIG. The upper blast plate 41 protrudes downward from the top wall 31 , and the upper blast plate 41 protrudes upward from the bottom wall 34 . The upper and lower blast plates 41 and 45 extend to midway positions in the vertical direction of the first chamber section 50 . Therefore, the central portion in the vertical direction in the first chamber portion 50 serves as a path for conditioned air.

The same member may be used for the upper air blast plate 41 and the lower air blast plate 45 . Specifically, as shown in FIG. 8, the upper and lower blast plates 41 and 45 are substantially inverted L-shaped when viewed from the front. The upper and lower blast plates 41 and 45 have a horizontal portion 42 , a vertical portion 43 extending perpendicularly to the horizontal portion 42 , and a plurality of through holes 44 provided in the horizontal portion 42 .

The upper blast plate 41 is attached to the ceiling wall 31 by aligning the horizontal portion 42 along the ceiling wall 31 and passing bolts through the through holes 44 . The upper blast plate 41 extends from the second side wall 32b to the fourth side wall 32d. The upper blast plates 41 are provided in seven stages so as to extend in the same direction at intervals. The plurality of upper blast plates 41 extend in a direction that intersects the introduction direction of conditioned air introduced from the air conditioner 2, specifically, in a direction that intersects perpendicularly.

As shown in FIG. 7( a ), the lower blast plate 45 is provided vertically symmetrically with the upper blast plate 41 . In this case, since the air outlet 35 is provided on almost the entire surface of the bottom wall 34, the lower impact plate 45 spans from the bottom wall 34 on the side of the second side wall 32b to the bottom wall 34 on the side of the fourth side wall 32d. The wind plate 45 is attached to the bottom wall 34 by passing bolts through the through holes 44 provided at both longitudinal ends of the air plate 45 .

From the viewpoint of construction, it is assumed that L-shaped members are used as the blast plates 41 and 45, and the horizontal portions 42 are attached to the top wall 31 and the bottom wall 34, but the blast plates 41 and 45 are long. A shaped plate material may be used, or the air blast plates 41 and 45 may be integrally formed with the top wall 31 and the bottom wall 34 .

Next, the second chamber section 60 will be described with reference to FIGS. 9 and 10. FIG. The second chamber portion 60 is cylindrical and includes first to fourth side walls 62a-62d. The second chamber part 60 constitutes the air outlet 35 of the straightening chamber 3 .

A louver 61 having wind direction plates 63 and 67 is provided in the second chamber section 60 . The louvers 61 are arranged so as to intersect the longitudinal direction of the blast plates 41 and 45 . The louver 61 is composed of a first airflow direction plate 63 and a second airflow direction plate 67. The first airflow direction plate 63 and the second airflow direction plate 67 are located at the longitudinal center of the air impulse plates 41 and 45 (second chamber section 60). It is symmetrical with respect to the position of the part. That is, the louver 61 sends out the conditioned air in the front-rear direction (the direction indicated by the arrow A3).

Specifically, as shown in FIG. 10 , the first and second wind direction plates 63 and 67 have an inclined portion 64 and an upper portion 65 located above the inclined portion 64 . Further, guide portions 66 are provided at the outer side end portions of the first and second wind direction plates 63 and 67 . The guide portion 66 is arranged to form an obtuse angle with the inclined portion 64 . Specifically, the angle θ formed by the inclined portion 64 and the guide portion 66 is, for example, 100° to 170°, preferably 135°. The guide portion 66 extends substantially parallel to the upper surface of the air conditioning duct 5 . As a result, the guide portion 66 plays a role of sending the air-conditioned air along the upper surface of the air-conditioning duct 5 by the Coanda effect. In addition, the guide portion 66 may be formed integrally with the inclined portion 64 by being bent, or may be provided by a member separate from the inclined portion 64 .

As shown in FIG. 9B, the first wind direction plate 63 extends from the first side wall 62a to the second side wall 62b. Seven first wind direction plates 63 are provided so as to extend in the same direction at intervals. Similarly, seven second wind direction plates 67 are provided so as to extend in the same direction at intervals. The upper portions 65 of the first wind direction plate 63 and the second wind direction plate 67 located in the central portion are in contact with each other. As a result, as shown in FIG. 4, the conditioned air sent from the first chamber section 30 intersects the direction in which it is sent from the air conditioner 2 to the first chamber section 30 (horizontal direction indicated by arrow A2). It can be sent out in the direction (the front-rear direction indicated by arrow A3).

<About the operation of the blower>
Next, operation of the blower 1 will be described with reference to FIGS. 4, 11 and 12. FIG.

As shown in FIG. 4 , conditioned air is sent out from the air conditioner 2 and introduced into the straightening chamber 3 via the connecting duct 4 . Since the air inlet 33 of the straightening chamber 3 is provided with a perforated plate, the conditioned air passing through the air inlet 33 is fed into the straightening chamber 3 in a uniform state.

The conditioned air sent into the rectifying chamber 3 goes straight toward the third side wall 32c. Therefore, as shown in FIG. 11, the conditioned air passing through the top wall 31 side (above) contacts the upper air impulse plate 41 and is braked, causing convection at each position. The conditioned air passing through the bottom wall 34 side (below) is braked by contact with the lower blast plate 45 , convects at each position, and descends toward the air outlet 35 . The conditioned air passing through the center of the rectifying chamber 3 is directed toward the third side wall 32c and descends toward the air outlet 35 while contacting the third side wall 32c.

As shown in FIG. 12, the conditioned air sent to the air outlet 35 of the straightening chamber 3 abuts the louvers 61 . Since the louver 61 is composed of the first and second wind direction plates 63 and 67, the conditioned air that contacts the first and second wind direction plates 63 and 67 moves in the longitudinal direction of the air conditioning duct 5 (as indicated by arrow A3). (front and back direction shown) and sent out separately.

In the conventional rectifying chamber, the conditioned air sent out from the air conditioning unit all collided with the wall surface of the rectifying chamber and descended toward the exit, so the conditioned air was biased only near the wall surface where the conditioned air collided. , the air volume could not be sent out uniformly. In the present embodiment, by providing the upper and lower blast plates 41 and 45 in the rectifying chamber 3, the conditioned air coming into contact with the upper and lower blast plates 41 and 45 convects at each location. The amount of air reaching the third side wall 32c can be reduced. Therefore, the conditioned air sent from the first chamber section 30 to the second chamber section 60 can be kept uniform in the lateral direction of the first chamber section 30 (direction indicated by arrow A2).

Furthermore, by providing the air outlet 35 of the rectifying chamber 3 with louvers 61 that are symmetrical with respect to the position of the central portion in the longitudinal direction of the second chamber portion 60, the conditioned air can be efficiently circulated in the longitudinal direction of the air conditioning duct 5. It can be delivered separately on both sides. In addition, since the inclination angle of the outer side end portions of the first and second airflow direction plates 63 and 67 of the louver 61 is gentle, the Coanda effect is exhibited, and the conditioned air flows through the guide portions 66 of the airflow direction plates 63 and 67. (FIG. 10). Therefore, the conditioned air is sent along the upper surface of the air-conditioning duct 5 without coming into contact with the bottom portion 54 of the air-conditioning duct 5 , and flows over the air-conditioning duct 5 so as to skim.

As a result, although the air-conditioning duct 5 of the present embodiment is long in the longitudinal direction, the air-conditioned air from the air conditioner 2 can be evenly distributed to the tip opening 56 of the air-conditioning duct 5 . The air blower 1 and the rectifying chamber 3 of the present embodiment can make the air volume in the indoor space 102 uniform.

In addition, in the above-described embodiment, the blower device provided with the rectifying chamber has been described, but the rectifying chamber may be unitized and provided as a single unit.

Further, in the above embodiment, the second chamber portion 60 is provided as the air outlet 35 of the first chamber portion 30, but the second chamber portion 60 is not an essential component.

Furthermore, in the above-described embodiment, the louver 61 provided at the air outlet 35 is symmetrical with respect to the position of the central portion in the longitudinal direction of the second chamber portion 60. If it is provided near the portions 103 and 104, it may be inclined in one direction.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope.

1 air blower, 2 air conditioner, 3 rectifying chamber, 4 connecting duct, 5 air conditioning duct, 10 air conditioning unit, 15 blowing opening, 21 air conditioner body, 22 housing, 30 first chamber, 31 ceiling wall, 32a ~ 32d first to fourth side walls, 33 air inlet, 34 bottom wall, 35 air outlet, 41 upper blast plate, 42 horizontal portion, 43 vertical portion, 44 through hole, 45 lower blast plate, 51 side portion, 53 extension part, 54 bottom part, 55 side opening part, 56 tip opening part, 60 second chamber part, 61 louver, 62a to 62g first to fourth wall part, 63 first wind direction plate, 64 inclined part, 65 upper part, 66 guide Part 67 Second wind direction plate 100 Ceiling space 101 Ceiling 102 Indoor space 103 First wall portion 104 Second wall portion 106 Desk 107 Chair 108 Partition shelf.

Claims (5)

A rectification chamber provided in a ceiling space of a building,
ceiling wall and
a first side wall provided with an air inlet for receiving conditioned air sent from an air conditioner;
a third sidewall provided facing the first sidewall;
a bottom wall provided with an air outlet for sending conditioned air to an air conditioning duct attached to the ceiling,
an upper blast plate extending in a direction intersecting the introduction direction of the conditioned air introduced from the air inlet, provided in a plurality of stages at intervals with respect to the introduction direction, and arranged on the ceiling wall ; ,
a lower blast plate extending in a direction crossing the introduction direction of the conditioned air introduced from the air inlet, provided in a plurality of stages at intervals with respect to the introduction direction, and arranged on the bottom wall; has
By setting the height position of the lower end of the upper air blast plate higher than the height position of the upper end of the lower air blast plate, the center of the air blast plate serves as a path for the air-conditioned air to pass through to the third side wall. chamber. The air outlet is provided with a louver having a wind direction plate arranged to intersect the longitudinal direction of the upper blast plate and the lower blast plate,
2. The flow straightening chamber according to claim 1, wherein the inclination of the airflow direction plate is symmetrical with respect to the positions of the longitudinal central portions of the upper air blow plate and the lower air blow plate. 3. The rectifying chamber according to claim 2, wherein the outer end portion of the wind direction plate is provided with a guide portion for sending out the conditioned air along the upper surface of the air conditioning duct. The straightening chamber according to any one of claims 1 to 3, wherein the air inlet is provided with a perforated plate having a plurality of holes. A ceiling-embedded blower,
an air conditioner installed in the ceiling space of the building;
a rectification chamber provided in the ceiling space and connected to the air conditioner;
an air conditioning duct provided in an indoor space, positioned below the rectifying chamber and extending in the longitudinal direction,
The rectifying chamber includes a ceiling wall, a first side wall provided with an air inlet for receiving conditioned air sent from the air conditioner, a third side wall provided facing the first side wall, and a ceiling mounted on the rectifying chamber. and a bottom wall provided with an air outlet for sending conditioned air to the air conditioning duct,
The air-conditioning duct extends in a direction that intersects the introduction direction of the air-conditioned air introduced from the air inlet,
The straightening chamber extends in a direction intersecting with an introduction direction of the conditioned air introduced from the air inlet, is provided in a plurality of stages at intervals with respect to the introduction direction, and is arranged on the ceiling wall. It extends in a direction intersecting with the direction of introduction of the conditioned air introduced from the air inlet, is provided in a plurality of stages at intervals with respect to the direction of introduction, and is arranged on the bottom wall. and a lower blast plate,
By setting the height position of the lower end of the upper air blow plate higher than the height position of the upper end of the lower air blow plate, the center of the air blow plate serves as a path for the conditioned air to pass through to the third side wall. Device.

Images