JP5023418B2 - Ventilation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation apparatus that can be installed in a building compactly and inexpensively, and cannot be affected by a gust of wind being generated outside the building. SOLUTION: The ventilation apparatus 1 comprises a frame 5 having a passage 4 that has an inlet hole 2 and an outlet hole 3 inside, a fin 6 arranged rotatably in the frame 5 so that the passage 4 is opened or closed by rotation based on airflow passing through the passage 4, and an opening/closing lid 7 that opens or closes the outlet hole 3. The fin 6 comprises a rod section 35 that is supported by the frame 6 rotatably, and a pair of fin bodies 36 and 36 being extended in one piece in a diameter direction from the shaft section 35. The fin 6 is constantly energized so that it can be rotated in an A direction, and tip sections 41 and 42 of the fin body sections 36 and 37 are curved to generate rotary moment in a B direction in the fin 6 due to airflow that passes the passage 4.

Description

[0001]
BACKGROUND OF THE INVENTION
In order to ventilate the interior and the exterior of buildings such as office buildings, apartment houses, detached houses, warehouses, etc., the present invention is attached to the unoccupied part of the window sash or the platen part to reduce the degree of ventilation. It relates to a ventilator to be controlled.
[0002]
[Problems to be solved by the invention]
Usually, in this type of ventilator, fins are rotatably arranged in a frame defining the passage, and the degree of ventilation through the passage is controlled by determining the opening degree of the passage by rotation of the fin. .
[0003]
By the way, in such a ventilation device, when ventilation is not required, the fin is forcibly rotated by a fin rotation mechanism such as an electric motor to close the passage, but when such a fin rotation mechanism is provided, In addition to requiring a large space for installation, it requires many additional mechanisms such as buttons for starting and stopping the electric motor, detectors, etc. Cannot be installed.
[0004]
In the above ventilator, when the fin is rotated to the appropriate rotation position by the fin rotation mechanism to open the passage and perform gentle ventilation, it responds immediately when a gust of wind blows outside the room. Therefore, it is difficult to block the passage, and there is a possibility that dust will be scattered in the room due to such a gust of wind, and dust etc. may be raised in the room.
[0005]
The present invention has been made in view of the above points, and its object is to provide a ventilator that can be installed in a building at a compact and low cost and is not easily affected by gusts or the like generated outside. There is to do.
[0006]
[Means for Solving the Problems]
The ventilator according to the first aspect of the present invention has a frame having a passage having an inlet hole and an outlet hole therein, and is rotatably arranged in the frame so as to open and close the passage by rotation based on an air flow through the passage. The fin has an openable / closable lid for opening and closing the outlet hole, and the fin is integrally extended in the radial direction from the shaft portion rotatably supported by the frame. A pair of fin body portions, and the fins are constantly urged to rotate toward the passage opening position, and the tips of the fin body portions are blocked by the air flow passing through the passages. The fin is curved so that a rotational moment toward the position is generated in the fin.
[0007]
In the ventilator of the first aspect, because it has an openable / closable lid that opens and closes the outlet hole, the passage can be easily closed particularly when ventilation is not required without providing a fin rotation mechanism. Installation space for the fin rotation mechanism is not required, it can be installed in a building at a compact and low cost, and the tip of the fin body generates a rotational moment in the fin toward the passage blockage position by the air flow passing through the passage. Therefore, when an air flow with a flow rate higher than a certain level, for example, an air flow of 3 m / sec or more, is generated in the passage due to gusts, strong winds, etc. generated outside, The passage can be blocked, and air can be prevented from being introduced unnecessarily through the passage due to gusts, strong winds, etc. It is possible to eliminate the inconvenience that indoor air is ventilated more than necessary and the air conditioning effect is reduced, and it is possible to prevent an increase in air conditioning power to make up for this. Therefore, it is not easily affected by gusts or the like generated outside the room.
[0008]
In the ventilator according to the second aspect of the present invention, in the ventilator according to the first aspect, one surface of the fin main body at the tip and its vicinity is curved so as to be a convex surface, and the other The surface is curved to be a concave surface.
[0009]
According to the ventilation device of the second aspect, the shape of the fin main body portion in the vicinity of the tip portion and the vicinity thereof can preferably generate lift in the fin main body portion with the air flow passing through the passage. The fin can efficiently generate a rotational moment toward the passage closing position by the air flow passing through the passage.
[0010]
In the ventilator of the third aspect of the present invention, in the ventilator of the first or second aspect, one fin main body is heavier than the other fin main body, and the fin is the weight of the pair of fin main bodies. Due to the difference, the power is always urged to rotate toward the passage opening position.
[0011]
In the ventilator according to the fourth aspect of the present invention, in the ventilator according to any one of the first to third aspects, the shaft portion or one of the axial portions or the one of the shaft portions is urged so as to constantly urge the fins to rotate toward the passage opening position. The weight provided in the fin main-body part is comprised.
[0012]
In the present invention, since the fins are always urged to rotate toward the passage opening position, the weight of the fin main body may be made different as in the ventilation device of the third aspect. As in the ventilator of this aspect, instead of or together with the difference in the weight of the fin body part, a weight may be provided on the shaft part or one of the fin body parts. In order to obtain the difference in weight of the part, a pair of fin body parts are formed symmetrically with respect to the shaft part, and one fin body part is solid, and a cavity is provided in the other fin body part, Furthermore, other means such as forming one fin body part longer than the other fin body part may be employed so that the pair of fin body parts are asymmetric with respect to the shaft part.
[0013]
In the ventilator according to the fifth aspect of the present invention, in the ventilator according to any one of the first to fourth aspects, the openable / closable lid includes a rotatable lid body and a lid engaged with the frame in a closed state. A closed state maintaining mechanism that prohibits rotation of the main body and maintains a closed state of the passage by the lid main body.
[0014]
The closed state maintaining mechanism preferably includes an operation lever that can be manually operated, and is configured to be in a maintenance state and a maintenance release state by manual operation of the operation lever.
[0015]
The ventilation device of the present invention is attached to these walls and the like for ventilation between the room interior and the exterior of the building. Preferably, the inlet hole is opened to the outside, and the outlet hole is opened to the room side. Installed in the building.
[0016]
In a preferred example, the inlet hole is opened to the outside so as to introduce external air into the passage from a substantially horizontal direction, and the outlet hole is substantially vertical, more preferably vertical and upward from the passage. It opens to the indoor side so as to lead out air into the room.
[0017]
Next, the present invention and its embodiments will be described in more detail with reference to preferred examples shown in the drawings. The present invention is not limited to this example.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3, the ventilation device 1 installed on the wall of the building of this example includes a frame 5 having a passage 4 having a rectangular inlet hole 2 and an outlet hole 3 therein, and air passing through the passage 4. A fin 6 rotatably disposed in the frame 5 so as to open and close the passage 4 by rotation based on the flow, and an openable / closable lid 7 that opens and closes the outlet hole 3 are provided.
[0019]
The entrance hole 2 opens to the exterior 15 side so that the air outside the building 15 is introduced into the passage 4 from a substantially horizontal direction, and the exit hole 3 is in a substantially vertical direction, more preferably a vertical direction from the passage 4. Thus, an opening is made on the side of the room 16 so as to lead out air into the room 16 of the building. The passage 4 extends slightly inclined from the inlet hole 2 toward the outlet hole 3.
[0020]
The frame 5 includes an upper frame 21, a lower frame 22 arranged to face the upper frame 21, and left and right frames 23 and 24 fixed to both ends in the axial direction X of the upper frame 21 and the lower frame 22. Seal members 25 and 26 made of elastic material extending to the left and right frames 23 and 24 are fitted inside the upper frame 21 and the lower frame 22, respectively. On the other hand, in this example, the right frame 24 is provided with a regulating member 27 that regulates the rotation of the fin 6 in the A direction beyond a certain level.
[0021]
A dust-proof net 28 is attached to the frame 5 on the outlet hole 3 side. A dust-proof net equivalent to the dust-proof net 28 may be attached to the frame 5 or the frame 58 on the inlet hole 2 side also as a bird-proof net.
[0022]
On the one hand, the fin 6 is rotatably supported on the left frame 23 of the frame 6 via the shaft 31 and the ball bearing 32, and on the other hand, is supported on the right frame 24 of the frame 6 via the shaft 33 and the ball bearing 34. A shaft portion 35 and a pair of hollow fin main body portions 36 and 37 extending integrally from the shaft portion 35 in the radial direction are provided.
[0023]
Both end portions 38 in the axial direction X of the fin main body portions 36 and 37 are arranged in cylindrical recesses 39 formed in the left and right frames 23 and 24 so as not to contact the left and right frames 23 and 24.
[0024]
The radial tip portions 41 and 42 of the fin main body portions 36 and 37 have a rotational moment toward the passage closed position by the air flow from the inlet hole 2 passing through the passage 4 to the outlet hole 3, that is, a rotational moment in the B direction. In this example, the front surface 41 and one surface 43 of the fin main body 36 in the vicinity thereof are curved so as to be a convex surface that generates negative pressure. The other surface 44 is curved so as to be a concave surface, and one surface 45 of the fin body portion 37 in the vicinity of the tip portion 42 and the vicinity thereof is curved so as to be a convex surface that generates negative pressure. The other surface 46 is curved to be a concave surface.
[0025]
The curved shapes of the tip portions 41 and 42 and the fin main body portions 36 and 37 in the vicinity thereof are such that the passage 4 is opened from the fin 6 to the passage 4 from the inlet hole 2 to the outlet hole 3. When an air flow is generated, a lift force toward the seal member 26 is generated in the fin body portion 36, and a lift force toward the seal member 25 is generated in the fin body portion 37, and the fin 6 is passed through the fin 6 by a rotational moment based on the lift force. It is rotated in the direction B, that is, toward the closing position.
[0026]
A weight 51 is fixed to the shaft 33, and the fins 6 are constantly urged by the weight 51 so as to rotate toward the passage opening position, that is, to rotate in the A direction. In this example, since the fins 6 are arranged in the slightly inclined passage 4, it is necessary to make the fins 6 parallel to the passage 4 at the passage opening position, in other words, it is necessary to slightly incline like the passage 4. When there is a weight difference between the fin main body portion 36 and the fin main body portion 37, for example, even when the fin main body portion 36 is heavier than the fin main body portion 37, the weight 6 reliably passes through the fin 6. 4 can be rotated to a position parallel to 4.
[0027]
The restricting member 27 abuts on the fin main body portion 37 in the rotation of the fin 6 in the A direction by the weight 51 and restricts the rotation of the fin 6 in the A direction to maintain the fin 6 at the passage opening position.
[0028]
The weight 51 may be provided on at least one of the shaft 31 and the shaft portion 35 instead of or together with the shaft 33. When the passage 4 extends in the vertical direction and the fin 6 is parallel to the passage 4 in the passage opening position, the fin main body portion 36 is replaced with the weight 51 or together with the weight 51. It may be formed so that it is heavier than the pair of fin main body portions 36 and 37, and the fin 6 is always urged so as to be rotated toward the passage opening position. In order to obtain a difference in weight between the pair of fin main body portions 36 and 37, the hollow portion of the fin main body portion 36 is filled with a weight such as lead, or the radial length of the fin main body portion 36 is larger than that of the fin main body portion 37. May be lengthened.
[0029]
In the fin 6, the rotational position in the A and B directions is determined corresponding to the size of the air flow from the inlet hole 2 to the outlet hole 3 in the passage 4, and the passage 4 has a large direction from the inlet hole 2 to the outlet hole 3. When the fin 6 is rotated in the B direction by the air flow, as shown in FIG. 5, the surface 43 of the tip portion 41 abuts on the seal member 26, and the surface 45 of the tip portion 42 abuts on the seal member 25, The passage 4 is airtightly closed, and the fin 6 is rotated in the direction A by the weight 51 when such a large air flow stops flowing into the passage 4, and corresponds to the size of the air flow. The passage 4 is opened in the rotational position.
[0030]
The openable / closable lid 7 engages with the lid main body 55 rotatable on the outlet hole 3 and the lower frame 22 of the frame 5 in the closed state of the passage (the state shown in FIG. 1). And a closed state maintaining mechanism 56 that maintains the passage closed state by the lid body 55 by prohibiting the rotation of the lid body 55, and a sealing member 57 made of an elastic material is fitted on one surface of the lid body 55. ing.
[0031]
The hollow lid body 55 is rotatably supported in the C and D directions (see FIG. 4) via a pin 59 on a frame 58 fixed to an invisible part or a siding part of a window sash of a building. When the outlet hole 3 is manually opened in the C direction and the outlet hole 3 is completely opened as shown in FIGS. 4 and 5, the outlet hole 3 is opened by a releasable open state maintaining mechanism (not shown). The state is to be maintained. 4 and 5, the lid main body 55 is brought into the closed state of the outlet hole 3 shown in FIG. 1 by being manually rotated in the D direction together with the manual release of the open state maintaining mechanism.
[0032]
The closed state maintaining mechanism 56 includes a manually operable operation lever 60 that is rotatably supported by the lid body 55, and an engagement piece 61 that rotates with the rotation of the operation lever 60.
[0033]
When the lid main body 55 is disposed on the outlet hole 3 and closes the outlet hole 3 (in the state shown in FIG. 1), the engaging piece 61 is inserted through the slit 62 formed in the lid main body 55. In the slit 63 of the lower frame 22, the lower frame 22 is engaged with the distal end portion 64, the rotation in the C direction around the pin 59 of the lid body 55 is prohibited, and the operation lever 60 is manually rotated to the lower frame 22. When the engagement at the distal end portion 64 is released, rotation in the C direction around the pin 59 of the lid main body 55 is allowed.
[0034]
When the outlet hole 3 is closed by the lid main body 55, the seal member 57 surrounds the outlet hole 3 and comes into contact with the upper surfaces of the upper frame 21, the lower frame 22, the left and right frames 23 and 24.
[0035]
In the above description, the lid body 55 is rotatably supported by the frame 58, but instead, it may be rotatably supported by the upper frame 21.
[0036]
The ventilator 1 described above has the inlet hole 2 facing the opening 74 between the window sashes 71 and 72 that support the upper and lower window glass 69 and 70 of the building, or the window plate 73, and the window or window. Attached to the plate portion 73 and used.
[0037]
Since the ventilator 1 is provided with the openable / closable lid 7 for opening and closing the outlet hole 3, the openable / closable lid 7 is shown in FIG. Since the passage 4 can be easily closed by arranging as shown in FIG. 5, it is possible to install the fin rotating mechanism in a building compactly and at a low cost without requiring an installation space for the fin rotating mechanism.
[0038]
Moreover, in the ventilation device 1, the tip portions 41 and 42 of the fin main body portions 36 and 37 are curved so as to generate a rotational moment in the B direction toward the passage closed position by the air flow passing through the passage 4. Therefore, in a state where the openable / closable lid 7 opens the passage 4 (the state shown in FIGS. 4 and 5), gusts, strong winds, etc. generated in the outside 15 cause the passage 4 to move from the inlet hole 2 to the outlet hole 3. When an air flow having a flow velocity of a certain level or more toward the air flow, for example, an air flow of 3 m / sec or more is generated, the air flow 4 can be naturally blocked using this air flow as shown in FIG. It is possible to prevent undesired air flow from being introduced into the room 16 through the passage 4 due to the undesired air flow, and to prevent the outside 15 from bringing sand dust into the room 16. Yes, and indoors It is possible to eliminate the inconvenience that the air of 6 is ventilated more than necessary and the air conditioning effect is reduced, and it is possible to prevent the increase of the air conditioning power to compensate for this, and thus due to a gust or the like generated at the outside 15 Not easily affected.
[0039]
In the ventilator 1, the above-described shapes of the tip portions 41 and 42 and the fin body portions 36 and 37 in the vicinity thereof preferably cause lift to the fin body portions 36 and 37 by the air flow passing through the passage 4. Therefore, the rotational moment toward the passage closing position can be efficiently generated in the fin 6 by the air flow passing through the passage 4.
[0040]
Further, since the sealing members 25 and 26 of the ventilation device 1 are made of an elastic material, the tip portions 41 and 42 of the fin 6 can be pressed tightly with an elastic reaction force, thereby closing the passage 4 more completely. Can do.
[0041]
【Effect of the invention】
ADVANTAGE OF THE INVENTION According to this invention, the ventilation apparatus which can be installed in a building with compact and low price, and is hard to be influenced by the gust etc. which arose outside can be provided.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a passage closed state according to a preferred embodiment of the present invention.
FIG. 2 is a partial explanatory diagram of the example shown in FIG. 1;
FIG. 3 is a partial explanatory diagram of a side surface of the example shown in FIG. 1;
4 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
FIG. 5 is an operation explanatory diagram of the example shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ventilator 2 Inlet hole 3 Outlet hole 4 Passage 5 Frame 6 Fin 7 Openable / closable lid

Claims (5)

An inlet hole that opens to the outside so as to introduce air outside the building from the horizontal direction and an outlet hole that opens to the indoor side so as to lead the air upward into the building room in the vertical direction. A frame having a passage inside thereof, and a frame which is rotatably arranged in the frame so as to open and close the passage by rotation based on an air flow passing through the passage, and is constantly urged to rotate toward a passage opening position. A fin, an openable / closable lid for opening and closing the outlet hole, and a regulating member provided on the frame so as to regulate rotation of the fin above a certain level, and the fin is a shaft rotatably supported by the frame And a pair of fin main body portions integrally extending in the radial direction from the shaft portion, and the regulating member abuts on the fin main body portion in rotation toward the passage opening position of the fin and aisle To regulate the rotation toward the release position being adapted to maintain the fin passage open position, one side of one of the fin body portion of the tip portion and the vicinity thereof, towards the inlet hole to the outlet vent passage Is curved so as to be a convex surface that generates a negative pressure that causes the fin to generate a rotational moment toward the passage blockage position by the air flow passing through the tip, and the other surface of the fin main body portion in the vicinity of the tip portion is The fin body is curved so as to have a concave surface so that a rotational moment toward the passage closing position is generated in the fin by the air flow passing through the passage from the inlet hole to the outlet hole, and the other fin body at the tip portion and in the vicinity thereof One surface of the other fin main body that is located on the same side as the other surface of the one fin main body passes through the passage from the inlet hole toward the outlet hole. air Is curved so as to be a convex surface that generates a negative pressure that causes the fin to generate a rotational moment toward the passage closing position, and is the other surface of the other fin body portion in the vicinity of the tip portion and The other surface of the other fin body portion located on the same side as the one surface of the fin body portion has a rotational moment toward the passage blockage position due to the air flow passing through the passage from the inlet hole toward the outlet hole. The fins are curved so as to be concave so as to be generated in the fins, and the front ends of the pair of fin main body portions and the vicinity thereof are on the passage opening position side with respect to the flat portions of the pair of fin main body portions. Ventilator that is curving towards.   The one fin main body is heavier than the other fin main body, and the fin is always urged to rotate toward the passage opening position due to the difference in weight of the pair of fin main bodies. The ventilation device described.   The ventilator according to claim 1 or 2, further comprising a weight provided on the shaft portion or one of the fin main body portions so as to constantly urge the fins to rotate toward the passage opening position.   The openable / closable lid includes a rotatable lid body, and a closed state maintaining mechanism that engages the frame in a closed state of the passage by the lid body and prohibits the rotation of the lid body and maintains the closed state of the passage by the lid body. The ventilator according to any one of claims 1 to 3.   The building provided with the ventilation apparatus as described in any one of Claim 1 to 4.

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