JP2008298403A - Outside air intake device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside air intake device capable of adjusting, in normal wind, to take in a constant amount of air indoors in response to the wind force, preventing, in strong wind such as gust, the gust from blowing indoors by closing an air channel, securing a constant air amount, and performing intake of outside air and discharge of air from indoors by automatically releasing the wind channel after passage of a predetermined period of time. <P>SOLUTION: The outside air intake device is equipped with a casing 6 including an outer wall side opening part 3 and an indoor side opening part 5 of a building and forming the wind channel 7, a rotatable motor damper 21 for opening/closing the wind channel 7, a sensor blade 30 that rotates by air pressure flowing in the wind channel 7, for detecting wind pressure, an operation means equipped with a potentiometer 35, for rotating the motor damper 21 according to the rotation amount of the sensor blade 30, a lock means for locking the closure of the wind channel 7 by the motor damper 21, and a lock release means for releasing the closure of the wind channel 7 by an opening/closing means after passage of a predetermined period of time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for taking outside air into a room, and more particularly to an outside air intake apparatus capable of ensuring a fixed amount of outside air even when strong winds such as gusts blow.

  Conventionally, as a device for taking outside air into a room, as shown in FIG. 16, it rotates on a support wall 64 erected on a lower wall 63 of a frame 61 at an opening 62 of a box-shaped frame 61 attached to the outer wall of a building. A blade 66 is rotatably supported via a shaft 65, a blade retaining wall 68 is provided on the upper wall 67 of the frame 61, and a floor passage 69 or an indoor passage provided in the frame 61 by the amount of rotation of the blade 66. There is disclosed a constant air flow ventilation device that adjusts the air flow to 70 and blocks the ventilation passage by the blade 66 abutting against the blade retaining wall 68. The blade 66 is constantly urged counterclockwise in the figure by a spring material 61 attached to the support wall 64 and the rotating shaft 65, and the blade 66 stops at a position where the spring material 61 and the wind pressure are balanced. When the wind pressure more than the elastic force acts on the blade 66, the blade 66 comes into contact with the blade retaining wall 68 (Patent Document 1).

  However, in the constant air volume ventilation device, since the blade 66 receiving the wind pressure is in contact with the blade stopper wall 68 to block the ventilation passage, the blade 66 is blocked by the blade stopper wall when a gust blows. There is a problem that a gust of wind blows into the room or the like until it comes into contact with 68.

  As a countermeasure against gusts, an outside air intake device is known in which a motor damper is operated by a check damper that is rotated by wind pressure to close an air passage. At this time, the check damper is locked and the air path is closed by the motor damper. Conventionally, the unlocking operation of the check damper for opening the air passage is performed manually, so that it is necessary to perform the releasing operation, or if this releasing operation is forgotten, air conditioning such as indoor air supply and exhaust Sometimes it was not done for a long time.

JP 2002-89914 A

  The present invention has been made in view of the above problems, and when normal wind is generated, it can be adjusted so that a certain amount of air is taken into the room corresponding to the wind force, and strong winds such as gusts are generated. When it occurs suddenly, the air passage is closed to prevent gusts from blowing into the room, and a constant amount of air can be secured, and the air passage is automatically opened after a predetermined period of time. An object of the present invention is to provide an outside air intake device that can take in and exhaust from the room.

  In order to achieve the above object, an outside air intake device according to claim 1 of the present invention includes a casing having an opening on the outer wall side of a building and an opening on the indoor side to form an air passage, and a rotation for opening and closing the air passage. Possible motor-driven opening / closing means, detection means for rotating by air pressure flowing through the air passage to detect wind pressure, operating means for operating the opening / closing means in accordance with the amount of rotation of the detection means, and the opening / closing means And a release means for releasing the air passage closed by the opening / closing means after a predetermined time has elapsed.

  A second aspect of the present invention is the outside air intake device according to the first aspect, wherein the detection means is provided closer to the opening on the outer wall side of the casing with respect to the opening / closing means.

  A third aspect of the present invention is the outside air intake device according to the first aspect, wherein the detection means is provided near both the opening on the outer wall side and the opening on the indoor side of the casing across the opening / closing means. And

  A fourth aspect of the present invention is the outside air intake device according to any one of the first to third aspects, wherein the casing is formed in a square cross-section, and one side wall of the opening / closing means and the detecting means is wider outside the other side walls. It is formed.

  According to a fifth aspect of the present invention, in the outside air intake device according to the fourth aspect, the detecting means is formed of a flat sensor blade, one end of the flat plate portion is attached to the rotating shaft, and the other end of the flat plate portion is folded. A bent portion is formed, and in an initial state, the flat plate portion is arranged in parallel with the one side wall by a spring material, and the bent portion is directed to the inside of the air passage from the one side wall.

  A sixth aspect of the present invention is the outside air intake device according to the first aspect, characterized in that the lower wall of the casing is inclined downward on the outer wall side opening side.

  According to a seventh aspect of the present invention, in the outside air intake device of the first aspect, an indoor side opening is provided in an indoor peri counter, and a punching plate that receives falling objects from the slit of the peri counter is provided in the opening. It is characterized by that.

  According to the present invention, the air volume flowing through the air path leading to the outside and the room is detected, and the opening degree of the air path is controlled by the opening / closing means according to the air volume, so that a constant air volume can be taken in. Further, when a gust blows, the detection means detects the opening / closing means to fully close the air passage, and the gust can be prevented from blowing into the room. Furthermore, since it can be maintained for a predetermined time by the fully closed locking means by the opening and closing means, no trouble occurs even if gusts occur continuously. Further, since the unlocking is automatically performed after the time when the opening / closing means is fully closed by the locking means, the trouble of manually releasing the lock can be saved. Furthermore, bidirectional control for controlling the intake air volume of the outside air and the exhaust volume from the room to be constant can be performed.

  Embodiments of the present invention will be described below with reference to the drawings.

  A first embodiment of the present invention will be described with reference to FIGS. 1 to 12 show an outside air intake device of the present embodiment, FIG. 1 is a cross-sectional view for explaining the arrangement state in a building, FIG. 2 is a view from above, and FIG. 3 is a view from the direction of the outer wall side opening. 4 and 5 are a left side view and a right side view of FIG. 1, FIG. 6 is a sectional view, FIGS. 7 and 8 are partially enlarged sectional views of FIG. 5, and FIGS. 9 to 12 are diagrams showing the locking means and the like, FIG. 9 is a perspective view, FIG. 10 is a side view, FIG. 11 is a cross-sectional view as viewed from above, and FIG. It is sectional drawing seen from the direction. FIG. 13 is a flowchart of the operation, and FIG. 14 is a graph showing the relationship between the sensor blade opening and the motor damper opening.

  As shown in the figure, the outside air intake device 1 according to the first embodiment of the present invention has an air passage 7 by a casing 6 having an outer wall side opening 3 opened in the outer wall 2 of the building and an indoor side opening 5 opened in the room 4. A dewproof material 8 is provided around the casing 6, and the lower wall 6 a of the casing 6 slightly inclines the outer wall side opening 3 side downward (10/515) (rain water). Is prevented from entering. The indoor side opening 5 is installed in the blower outlet 10 provided in the peri counter 9 near the window on which a vase, potted plant, or the like is placed. The casing 6 has an outer wall side opening 3 side fixed to the outer wall 2 via a fixing plate 11, and an indoor side opening 5 side fixed to a slab 14 below the floor 13 via a fixing bracket 12. In the figure, reference numerals 19 and 20 denote packings.

  A dust / insect / bird net 15 is installed in front of the casing 6 on the outer wall side opening 3 side, and a cover 16 is provided in front of the casing 6 to prevent wind from flowing directly into the casing 6. It is attached to the outer wall 2 and arranged.

  In the indoor opening 5, a punching plate 17 that receives falling objects from the air outlet 10 is installed below the air outlet 10 of the peri counter 9, and an air filter 18 is provided below the punching plate 17. The air filter 18 may not be provided.

  As shown in FIGS. 2 to 5, the casing 6 is formed in a square shape, and the outer wall side opening 3 is formed in two openings. One opening may be sufficient as the outer wall side opening part 3, for example, when a pillar etc. are installed in the position of the outer wall side opening part 3, a pillar etc. can be avoided by forming in two mouths.

  A motor damper 21 as an opening / closing means is provided in the approximate center of the casing 6. The motor damper 21 is provided with two motor damper blades (hereinafter referred to as damper blades) 23 on the outer periphery of a motor damper shaft (hereinafter referred to as a motor shaft) 22. The damper blade 23 is formed by sandwiching a sound insulation sheet 25 between two damper blade members 24 that can bend the outer periphery of the motor shaft 22.

  The motor shaft 22 is rotatably supported by the left side wall 6 c and the right side wall 6 d of the casing 6, and is driven by an electric motor (not shown) arranged inside the first operation box 26 arranged on the right side wall of the casing 6. As shown by the arrows, the airflow flowing through the air passage 7 of the casing 6 can be controlled to be constant by the damper blade 23 while being rotated clockwise and counterclockwise, and the air flowing through the air passage 7 is shut off and the air flow is blocked. The closure can be released. The lower wall 6a and the upper wall 6b of the casing 6 are in contact with the damper blade 23 when the damper blade 23 is rotated in the vertical direction as shown in FIG. Is provided.

  Sensor blades 30 as air volume detection means are arranged closer to the outer wall opening 3 than the motor damper 21. The sensor blade 30 is formed in a flat plate shape, and a sensor shaft 32 rotatably attached to the left side wall 6c and the right side wall 6d of the casing 6 is attached to one end of the flat plate portion 31. Further, a bent portion 33 that is bent downward is formed at the other end of the flat plate portion 31. As will be described later, in the initial state where the motor damper 21 is fully opened, the sensor blade 30 maintains the flat plate portion 31 in parallel with the upper wall 6b of the casing 6. Falls on the bent portion 33, and the sensor shaft 32 is rotated with the inclination of the sensor blade 30.

  A second operation box 34 is disposed on the left side wall 6 c of the casing 6, and an operating means for operating the motor damper 21 according to the amount of rotation of the sensor blade 30 (sensor shaft 32) and the closing of the air passage 7. Locking means for locking (fully closed) and unlocking means for releasing the lock after a predetermined time and releasing the air passage 7 by the motor damper (fully closed) are arranged as shown in FIGS. .

  The actuating means includes a potentiometer 35 for detecting the rotation angle of the sensor shaft 32, and rotates the motor damper 21 via an electric motor in accordance with the rotation amount of the sensor shaft 32, that is, the opening degree of the air passage 7 depending on the tilt state of the sensor blade 30. It comes to move.

  The locking means is fixed to the sensor shaft 32 and rotates together with the sensor shaft 32, a roll 38 provided on the rotation plate 36 and rotatable about the shaft 37, and the roll 38 abuts on the top surface of the shaft 38. And a turning member 40 that can turn around the center. One end of a spring 42 that normally urges the sensor blade 30 in the opening direction (counterclockwise in FIGS. 9 and 10) to seal the sensor blade 30 in an initial state is sealed on the rotating plate 36, and the other end of the spring 42 is the casing. 6 is latched by a latch member 43 attached to the right side wall 6c. The rotating member 40 is held by a support member 44 fixed to the right side wall 6c of the casing 6 via the shaft 39, and a step provided on the front portion of the rotating member 40 below the upper surface. A portion 41 is formed, and the roll 36 that has fallen on the stepped portion 41 is prevented from rotating in the direction of the initial state, and the rotation of the sensor blade 30 is locked. One end of a spring 45 that constantly rotates and biases the stepped portion 41 of the rotating member 40 about the shaft 39 is hooked on the rear portion of the rotating member 40, and the other end of the spring 45 is described later. It is latched by the member of the unlocking means to do.

  The lock release means includes a solenoid 46, and can turn the striking member 41 downward about the shaft 39 to release the locking of the roll 38 by the step 41. The solenoid 45 is held by a holding member 48 attached to a fixing member 47 fixed to the lower surface of the support member 44 of the rotating member 40. The other end of the spring 45 is hooked on the rear portion of the fixing member 47. The latching portions 49 of the spring 45 of the fixing member 47 are provided at three locations in the vertical direction, and the biasing force of the spring 45 can be adjusted by the latching portion 49.

Next, the operation will be described with reference to FIGS.
In the outside air intake device 1 of the present invention, the motor damper 21 and the sensor blade 30 operate from the fully open state to the fully closed state by the wind pressure blown into the air passage 7 of the casing 6.

  As shown in FIG. 7, when the sensor blade 30 is fully open (opening degree 0%), when the air blows into the air passage 7 and the air volume is 1000 CMH or less, the sensor blade 30 does not perform the air volume control, The motor damper 21 is fully opened.

  When the air flow exceeds 1000 CMH, the sensor blade 30 starts air flow control. At this time, if the sensor blade 30 rotates and the opening degree of the sensor blade 30 is in the range of 0% to 20%, the motor damper 21 is not rotated and remains fully open. Further, when the opening degree of the sensor blade 30 changes from 20% to 50%, the motor damper 21 is moved in the direction of closing the air passage 7 by the electric motor (not shown) of the motor damper 21 via the potentiometer 35, and the motor damper 21 is opened. It is rotated so that the degree becomes 50%. Further, when the opening degree of the sensor blade 30 is 50% to 100% or a strong wind that is locked fully closed, the motor damper 21 rotates 90 ° clockwise from the fully opened state, and the damper blade 23 and the contact member 27 are in close contact with each other. Then, the air passage 7 is fully closed.

  In the fully closed state, the sensor blade 30 is locked. This lock is achieved by the rotation of the rotating plate 36 fixed to the sensor shaft 32 by the rotation of the sensor blade 30, and the roll 38 provided on the rotating plate 36 falls into the stepped portion 41 of the rotating member 40. This is because the roll 36 is locked to the rising surface of the step portion 41 and the return rotation of the rotating plate 36 is prevented.

  This locked state is performed for 5 minutes by a timer, and when 5 minutes have elapsed, the solenoid 46 pulls down the rotating member 40 and releases the locking of the roll 38 from the rising surface of the stepped portion 41 to release the fully closed lock. To do. When the fully closed lock is released, the motor damper 21 makes the following determination with the opening degree set to 50%.

  Although the standby time in the locked state has been described as 5 minutes, a standby time of 3 to 30 minutes can be set by setting a timer. Moreover, the opening degree setting of the motor damper 21 by the opening degree of the sensor blade 30 is arbitrary.

  In the flowchart of FIG. 14, “fully closed command signal input → motor damper forced fully open operation” is to forcibly fully close the motor damper 21 in response to a command from a control panel (not shown).

  A second embodiment of the present invention will be described with reference to FIG. FIG. 15 is a partially enlarged sectional view showing the outside air intake device of the present embodiment.

  The outside air intake device 51 of the present embodiment is configured by arranging sensor blades 30 on both sides of a motor damper 21 configured in the same manner as in the first embodiment. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and the description thereof is omitted.

  According to the present embodiment, as in the first embodiment, it is possible to control the flow rate of outside air to be constant and to perform bidirectional control to control the flow rate of air discharged from the room to be constant. Other functions and effects are the same as those of the first embodiment.

It is sectional drawing for demonstrating an arrangement state in the building of the external air intake device of Example 1 of this invention. It is the figure which looked at the external air intake device of Example 1 of this invention from upper direction. It is the figure which looked at the external air intake device of Example 1 of this invention from the direction of the outer wall side opening part. It is a left view of FIG. 1 which shows the external air intake device of Example 1 of this invention. It is a left view of FIG. 1 which shows the external air intake device of Example 1 of this invention. It is sectional drawing which shows the external air intake device of Example 1 of this invention. It is sectional drawing which shows the full open state of the external air intake device of Example 1 of this invention. It is sectional drawing which shows the fully closed state of the external air intake device of Example 1 of this invention. It is a perspective view which shows the locking means etc. in the external air intake device of Example 1 of this invention. It is a side view which shows the locking means etc. in the external air intake device of Example 1 of this invention. It is sectional drawing seen from the top which shows the locking means etc. in the external air intake device of Example 1 of this invention. It is sectional drawing seen from the direction of the outer wall side opening part which shows the locking means etc. in the external air intake device of Example 1 of this invention. It is a flowchart of the operation | movement in the external air intake device of Example 1 of this invention. It is a graph which shows the relationship between the sensor blade | wing opening degree and the motor damper opening degree in the external air intake device of Example 1 of this invention. It is a partial expanded sectional view which shows the external air intake device of a present Example. It is sectional drawing which shows a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outside air intake device 2 Outer wall 3 Outer wall side opening 4 Indoor 5 Indoor side opening 6 Casing 7 Air passage 8 Dewproof material 9 Pericounter 10 Outlet 11 Fixing plate 12 Fixing metal fitting 13 Floor 14 Slab 15 Net 16 Cover 17 Punching plate 18 Air filter 19 Packing 20 Packing 21 Motor damper 22 Motor damper shaft (motor shaft)
23 Motor damper blade (damper blade)
24 damper blade member 25 sound insulation sheet 26 first operation box 27 contact member 30 sensor blade 31 flat plate portion 32 sensor shaft 33 bent portion 34 second operation box 35 potentiometer 36 rotating plate 37 shaft 38 roll 39 shaft 40 Rotating member 41 Stepped portion 42 Spring 43 Latching member 44 Support member 45 Spring 46 Solenoid 47 Fixing member 48 Holding member 49 Latching portion 51 Outside air intake device

Claims (7)

  A casing having an opening on the outer wall side of the building and an opening on the indoor side to form an air passage, a rotatable motor-driven opening / closing means for opening and closing the air passage, and air pressure flowing through the air passage. Detecting means for detecting wind pressure, operating means for operating the opening / closing means in accordance with the amount of rotation of the detecting means, locking means for locking the closing of the air passage by the opening / closing means, and opening / closing means after a predetermined time has elapsed. An outside air intake device, comprising: an unlocking means for unlocking the air passage.   The outside air intake device according to claim 1, wherein the detecting means is provided closer to the opening on the outer wall side of the casing with respect to the opening / closing means.   2. The outside air intake device according to claim 1, wherein the detecting means is provided near both the outer wall side opening and the indoor side opening of the casing with the opening / closing means interposed therebetween.   The outside air intake according to any one of claims 1 to 3, wherein the casing is formed in a square cross section, and one side wall of the arrangement portion of the opening and closing means and detection means is formed wider outside the other side wall. apparatus.   The detection means is formed by a flat sensor blade, one end of the flat plate portion is attached to the rotating shaft, a bent portion is formed at the other end of the flat plate portion, and the flat plate portion is fixed to the one side wall by a spring material in an initial state. The outside air intake device according to claim 4, wherein the bent portion is directed to the inside of the air passage from the one side wall.   The outside air intake device according to claim 1, wherein the lower wall of the casing is inclined downward on the outer wall side opening side.   2. The outside air intake device according to claim 1, wherein an indoor side opening is provided in an indoor pericounter, and a punching plate that receives a fallen object from a slit of the pericounter is provided in the opening.

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