Patent Application
20070178826
The present invention relates to a blow out grill as a distal end opening provided at a ventilation apparatus for supplying air outside of a room into a room and an air conditioning ventilation system using the same.
There is disclosed an example of a blow out grill of a background art for blowing out air outside of a room in a vertical direction relative to an installing face in Japanese Patent Unexamined Publication No. H10-325590.
However, according to the blow out grill of a type of blowing out air in the vertical direction relative to the installing face, air supplied from the blow grill directly impinges on a person in a room. Therefore, there poses a problem that when supplied air is air outside of a house in winter time or cooling air in summer time, a blown out air flow constitutes cold draft. On the other hand, although when air is blown out in a horizontal direction relative to the installing face, an unpleasant feeling by cold draft (hereinafter, referred to as unpleasant feeling) can be prevented, there poses a problem that the air flows along the installing face by a Coanda effect, powder dust or the like mixed in the air is adhered to contaminate the installing face.
Hence, there is disclosed an example of a blow out grill simultaneously resolving the two problems by using a plurality of sheets of fins in Japanese Patent Unexamined Publication No. H10-306933.
The blow out grill of the background art will be explained in reference to
However, in this case, there poses a problem that an outlook in a room is deteriorated since powder dust fixed to the supplied air is adhered to all of the fins. Further, even when the fins are cleaned, there poses a problem that it is very difficult to clean the fins since intervals between the fins are narrow. Further, there poses a problem that an angle of installing the fin needs to be set finely, a number of parts is increased by using a plurality of sheets of the fins and therefore, the fins become expensive.
The invention provides a blow out grill including an outdoors side opening communicated with a duct, an indoors side opening communicated with inside of a room, a panel base portion forming a wind blowing path of carried air between the indoors side opening and the outdoors side opening, a panel portion formed to be opposed to the panel base portion, and a blow out port communicating with the wind blowing path and formed between the panel portion and the panel base portion for forming a first air flow guiding projected portion directed to a side of the panel portion at the panel base portion and forming a second air flow guiding projected portion directed to a side of the panel base portion at the panel portion. Further, the invention provides an air conditioning ventilation system using the blow out grill.
The blow out grill of the invention is a blow out grill provided to blow out carried air to inside of a room by way of a duct including an outdoors side opening communicated with the duct, an indoors side opening communicated with the inside of the room, a panel base portion forming a wind blowing path of the carried air between the indoors side opening and the outdoors side opening, a panel portion formed to be opposed to the panel base portion, and a blow out port communicated with the wind blowing path and formed between the panel portion and the panel base portion for forming a first air flow guiding projected portion directed to a side of the panel portion at the panel base portion and forming a second air flow guiding projected portion directed to a side of the panel base portion at the panel portion. In this way, an angle of blowing out carried air from the blow out grill can be set to a pertinent angle to a degree of not being excessively proximate to an installing face of the blow out grill and difficult to feel an unpleasant feeling. Therefore, an excellent outlook of inside of the room can be achieved and a blow out air stream can cover corners of inside of the room. There is achieved an effect that an inner portion of the panel base portion is not seen from a person dwelling in the room, cleaning of the panel portion is easy and the blow out grill is inexpensive.
In the blow out grill of the invention, the second air flow guiding projected portion is provided at an outer peripheral edge of the panel portion. In this way, by enabling to set the blow out angle by a pertinent angle, the blow out air stream can cover corners of inside of room. Further, outlook of inside of the room can be prevented from being deteriorated by making the inner portion of the panel base portion difficult to be seen from the person dwelling in the room.
In the blow out grill of the invention, a third air flow guiding projected portion is formed on an inner side of the second air flow guiding projected portion, and the third air flow guiding projected portion is projected to the side of the panel base portion than the second air flow guiding projected portion. In this way, an air flow in a direction of departing from the installing face is promoted to be formed by the third air flow guiding projected portion and therefore, contamination of the installing face can be prevented by restraining the air flow which is approaching the installing face.
In the blow out grill of the invention, the panel portion is formed in a polygonal shape, and the second air flow guiding projected portion formed at a corner portion thereof is projected to the side of the panel base portion than the second air flow guiding projected portion formed at other portion excluding the corner portion. In this way, with regard to an air flow which tends to be liable to be deviated to the side of the installing face at the corner portion, the air flow in the direction of departing from the installing face is promoted to be formed by the second air flow guiding projected portion which is more projected and therefore, contamination of the installing face can be prevented by restraining the air flow which is approaching the installing face.
In the blow out grill of the invention, the panel portion is formed in a polygonal shape, and the third air flow guiding projected portion is formed at a corner portion thereof. In this way, with regard to the air flow which tends to be liable to be deviated to the side of the installing face at the corner portion, formation of an air flow in a direction of departing from the installing face by the second air flow guiding projected portion which is projected further is promoted and therefore, contamination of the installing face can be prevented by restraining the air flow which is approaching the installing face.
In the blow out grill of the invention, the third air flow guiding projected portion is formed in an L-like shape toward the panel portion. In this way, contamination of the installing face can be prevented by restraining the air flow which is approaching the installing face and a strength of the panel portion is improved.
In the blow out grill of the invention, a height of the first air flow guiding projected portion, the second air flow guiding projected portion, or the third air guiding projected portion is made to be able to be changed. In this way, the installing face of the blow out grill is not contaminated and the unpleasant feeling can be prevented with regard to all of a wind amount or a wind speed of carried air which differ by used environment.
The blow out grill of the invention further includes an interval adjusting apparatus for enabling to change to set an interval between the panel base portion and the panel portion. In this way, the blow out wind speed of carried air can be adjusted in accordance with the used environment.
In the blow out grill of the invention, the blow out port is constituted between an outer peripheral portion of the panel portion present on an inner side of an outer peripheral edge of the panel base portion and the panel base portion. In this way, the blow out port can be formed to be directed to a lower side and therefore, flow of the air flow which is approaching the installing face is restrained by promoting the air flow in the direction of departing from the installing face and therefore, contamination of the installing face can be prevented.
In the blow out grill of the invention, the indoors side opening of the panel base portion is constituted by a bell-mouthed shape. In this way, a pressure loss of the blow out grill can be reduced.
In the blow out grill of the invention, an angle of the outdoors side opening can arbitrarily be set relative to the panel base portion. In this way, a duct can be attached from an arbitrary angle. The blow out grill of the invention further includes a wind amount control apparatus capable of changing an opening area of the outdoors side opening by being overlapped with the outdoors side opening by being slid along an inner face of the panel base portion. In this way, the wind amount of carried air supplied to inside of the room can be adjusted. There is achieved an effect that an inner portion of the panel base portion is not seen from the person dwelling in the room, the panel portion is easy to be cleaned, and the blow out grill is inexpensive.
An air conditioning ventilation system of the invention is provided with an air flow apparatus to communicate a room provided with the blow out grill and outside of the room, the blow out grill is provided at a ceiling disposed above the air flow apparatus, and carried air is blown out in a direction of departing from the air flow apparatus. In this way, carried air is exhausted from the air flow apparatus to outside of the room after sufficiently circulating at inside of the room.
An example of an embodiment of the invention will be explained in details in reference to
An arrow mark in the drawings represents a flow of air.
As shown by
Here, as shown by
As an example of the supply air blowing apparatus and the exhaust air blowing apparatus, a blower or the like constituted by a motor and a fan is pointed out.
As an example of air flow apparatus 8 as air flowing means, the following is pointed out. When air flow apparatus 8 is installed at a lower portion at inside of a room, an undercut portion of a door or a ventilation louver is conceivable. When air flow apparatus 8 is installed at an upper portion at inside of the room, a vent or a blower installed above a door is conceivable.
Next, as shown by
Panel base portion 23 is formed by panel connecting face 29 including claw portion 26 for making panel portion 24 attachable and detachable and wind blowing path 31 in a cylindrical shape which is made mountable by locking portion 30 provided at an end portion of an outer periphery of duct connecting portion 22. An end portion or a vicinity of an end portion of an outer peripheral portion of panel connecting face 29 is provided with second rib 32 constituting a first air flow guiding projected portion formed to be erected substantially orthogonally to the face direction of panel portion 24. Second rib 32 is arranged to be formed on an outer side of a face of panel portion 24 to contribute to the fact that carried air blown out from blow out port 28 is blown out to depart from a ceiling face at which blow out grill 3 is installed. Panel portion 24 is provided with third rib 33 on an inner side of first rib 27 in parallel there with.
Third rib 33 is constituted to be higher than first rib 27 toward panel base portion 23. It is preferable that the height difference is formed by about 2 through 5 mm, an interval between first rib 27 and third rib 33 is formed by about 1.5 through 3 mm. By a relationship of the height difference and a size of the interval, an air flow blown out from blow port 28 is blown out in a direction of departing from the installing face of the blow out grill. Further, it is preferable to supply the air flow to inside of the room by an angle of about 20 degrees -30 degrees relative to the installing face such that the air flow does not approach the installing face by second rib 32. Further, when panel portion 24 is formed in a polygonal shape as shown by
As a result, there is achieved an effect of directing the direction of the air flow blown out from blow out port 28 in a direction opposed to the installing face such that the direction is not deviated to a side of the installing face of blow out grill 3.
By forming third rib 33 substantially in the L-like shape at the corner portion, the formation not only contributes to the effect that the direction of the air flow blown out from blow out port 28 is directed to the direction of departing from the installing face so as not to be deviated to the side of the installing face but also to an increase in a strength of panel portion 24.
By boss portion 25 formed in the direction orthogonal to panel portion 24 at inside of panel portion 24 and claw portion 26 of panel base portion 23 formed at a portion thereof at which boss portion 25 is disposed, panel portion 24 is fitted to panel base portion 23 to thereby constitute an attachable and detachable interval adjusting apparatus.
That is, an interval between panel portion 24 and panel base portion 23 is made to be adjustable. A size of an opening of blow out portion 28 can be changed by interchanging panel portion 24 by a separate panel portion having a different height of the boss.
By mounting rails 34 in a U-like shape to first rib 27 and second rib 33 of panel portion 24 and second rib 32 of panel base portion 23, there is constructed a constitution capable of changing heights of the ribs.
In a case in which the blow out grill is installed at inside of the room, furniture, curtain or the like at inside of the room constitutes a hindrance of an air flow, a direction of the air flow needs to be changed. In such a case, by pertinently mounting rails 34 to first rib 27, third rib 33, second rib 32 as necessary, the direction of the air flow relative to the installing face can freely be adjusted by changing the heights of the ribs.
Panel base portion 23 is constituted by a structure having bell-mouthed shape 36 at indoors side opening 35 constituting a flow path of carried air in a cylindrical shape on a side of panel connecting face 29.
According to duct connecting portion 22, duct connecting port 21 is disposed in a horizontal direction relative to panel connecting face 29 and duct connecting portion 22 is mounted with panel base portion 23 by locking portion 30.
Locking portion 30 can be locked by being fitted to projected portion 37 provided on an inner side of a cylindrical end face of panel base portion 23. Since projected portion 37 is provided on a circumference, there is constituted a structure in which duct connecting port 21 is slidable at a horizontal arbitrary position relative to panel connecting face 29.
As shown by
As shown by
The dwelling room indicates a dwelling space of a living room, a Japanese-style room or the like at which a person lives, the nondwelling room indicates a space other than the dwelling room such as a passage, a washroom or the like.
According to the above-described constitution, outdoors air is introduced into ventilation unit 1 by way of outdoors introducing pipe 6, further, supplied to dwelling room 9 from blow out grill 3 by way of indoors introducing pipe 2. Contaminated air at dwelling room 9 is exhausted to nondwelling room 10 by air flow apparatus 8, introduced into ventilation unit 1 from sucking grill 5 by way of indoors exhaust pipe 4 and exhausted outside of the house by way of outdoors exhausting pipe 7.
As shown by
The flow is blown out to inside of the room in a state in which a component having a vector directed to a lower side to be along an inner side of second rib 32 formed at panel base portion 23 is large. Thereby, the air flow in the direction of departing from the installing face is formed. Carried air blown out substantially in the horizontal direction from blow out grill 3 is directed to a wall face present at a location remote from air flow apparatus 8 at a vicinity of the ceiling, flows to the floor along the wall face, and is exhausted to outside of the room by air flow apparatus 8 along the wall face of dwelling room 9. That is, carried air is exhausted from air flow apparatus 8 after circulating at inside of the dwelling room and therefore, ventilation can sufficiently be carried out without bringing about a stagnation.
When dwelling room 9 is large, or an aspect ratio thereof is large, there is a possibility that carried air blown out from blow out grill 3 does not reach a wall face in a blowing direction and stagnation is brought about at a vicinity of the wall face. Hence, by increasing a blow out wind speed from blow port 28 by reducing an opening area of blow out port 28, carried air can reach the wall face and therefore, the stagnation can be prevented from being brought about at a vicinity of the wall face. Here, when the blow out wind speed of carried air is increased, by promoting the Coanda effect, carried air flows along with the ceiling face, the ceiling face at a vicinity of the blow out grill is contaminated by powder dust or the like mixed to carried air. Hence, by making second rib 32 higher, a wind amount of carried air flowing in the vertical direction can be increased by second rib 32. In this way, the angle of blowing out air from blow out port 28 can be directed to the vertical direction and therefore, carried air is not in line with the ceiling face and the ceiling face can be prevented from being contaminated.
Since first rib 27 is provided at an end portion or a vicinity of the end portion of panel portion 24, an inner structure of the blow out grill is difficult to be seen from a person dwelling in the room and outlook of the room can be prevented from being deteriorated. Further, although an inner side face of panel portion 24 is contaminated by powder dust or the like mixed in carried air, since the contaminated face is flat, unlike the shape of the louver of the background art, an effect of being easy to wipe to clean is achieved. The problem can be resolved by a structure simpler than that of the blow out grill of the background art and therefore, a very inexpensive blow out grill can be provided.
Indoors side opening 35 of panel base portion 23 is constituted by a structure having bell-mouthed shape 36 and therefore, a vortex is difficult to be produced at a vicinity of indoors side opening 35, as a result, a pressure loss can be reduced. By reducing the pressure loss, energy necessary for satisfying a necessary ventilation amount can be reduced.
As a method of constructing the blow out grill, it is general to connect indoors introducing pipe 2 and duct connecting port 21 and thereafter install the blow out grill at the ceiling face. However, when the blow out grill in the square shape is used, caution is required in a direction of installing the blow out grill such that the outlook of the dwelling room is not deteriorated. When an angle of the duct connecting portion relative to the panel base portion is constant as in the blow out grill of the background art, there poses a problem that the installing direction cannot be changed, or when the blow out grill is forcibly rotated, the pressure loss is produced or the indoors introducing pipe is detached. However, according to the invention, the angle of connecting duct connecting portion 22 and panel base portion 23 can be changed and therefore, the direction of installing the blow out grill can be changed even after having been connected to indoors introducing pipe 2. That is, the problem can be prevented from being brought about.
In a path having the lowest pressure loss in the path from ventilation unit 1 to blow out grill 3 provided at each dwelling room 9, carried air of a wind amount larger than that of other path is carried. When the dwelling room at a destination of carrying air is a small dwelling room, a wind amount more than necessary is supplied, as a result, the dwelling room is applied with a warming heat load more than necessary. Hence, by controlling the wind amount by closing shutter 41 of the blow out grill provided at the dwelling room, the wind amount more than necessary can be excluded and the warming heat load more than necessary can be prevented from being brought about.
As described above, the invention can provide the blow out grill which simultaneously prevents contamination of the blow out grill installing face and an unpleasant feeling, does not deteriorate the outlook of inside of the room, capable of pertinently controlling the air flow at inside of the room, facilitated to be cleaned and is inexpensive.
The constitution of the blow out grill having the first air flow guiding projected portion and the second air flow guiding projected portion of the invention is applicable to the blow out grill of the air supplying ventilation apparatus including the wind blowing apparatus of the blower or the like at inside thereof. Further, the constitution is also applicable to the blow out grill of a natural air supply port directly connected to outside of the house by way of the duct.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2004-077469 | Mar 2004 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP05/05295 | 3/16/2005 | WO | 9/12/2006 |
