JP2008175416A - Ventilation unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation system capable of securing the minimum ventilation according to necessity, systematically discharging the contaminated air outdoors according to a degree of contamination, adjusting the ventilation according to the seasons, preventing generation of a harmful substance in summer, and preventing over-drying in winter. <P>SOLUTION: This ventilation unit comprises a nylon ribbon sensing a level of humidity, a nylon ribbon frame holding both ends of the nylon ribbon and having a movable portion sliding in parallel according to the contraction of the nylon ribbon, an elastic body fixed to the nylon ribbon frame at its one end, a rotating mechanism comprising a shaft for winding and holding one end of the elastic body, and pulling a tip of the elastic body in the direction of a main body end portion when the elastic body is extended, and an opening/closing damper control means fixed onto a movable plate to be connected to the rotating mechanism, and rotating in parallel with an opening/closing damper in such a state that a fitting projection of the opening/closing damper 7 is fitted, and further a mechanism for adjusting an opening area of the opening/closing damper within a prescribed range according to the difference in extension of the nylon ribbon based on the difference in humidity, is disposed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to a ventilation unit used for planned ventilation of a highly airtight and highly insulated house.

    Conventionally, in general wooden houses, there are gaps in the building itself, so it has excellent ventilation, and ventilation of houses is handled by opening and closing windows and shoji screens in general living rooms and bedrooms with little contaminated air. Kitchens, living rooms, toilets, etc., where air is easily generated, were provided with ventilation devices.

However, in recent years, highly airtight and highly heat-insulated houses have become widespread due to safety aspects such as earthquake resistance, and improved comfort, and the trend continues to increase.
Highly airtight and highly insulated houses are excellent in heat retention and comfort, but have high hermeticity and insufficient polluted air discharge compared to conventional houses. Particularly in apartment houses and high-rise houses, there are cases where it is difficult to open and close windows due to the structure, and there is a problem that polluted air exhausted from a local pollution source stays indoors.

    Further, in highly airtight and highly heat-insulated houses, the problem of sick houses, which are harmful to residents' health due to chemical substances emanating from building materials and furniture, has become serious. Against this background, the revision of the Building Standards Law made it mandatory to install mechanical ventilation equipment with effective ventilation in the living room environment.

    Therefore, a constant amount ventilation system that performs a certain amount of ventilation in each room is known as a ventilation system for buildings.

  FIG. 6 is a schematic diagram showing the flow of contaminated air in a living room when conventional local ventilation is used.

    In the conventional local ventilation, there is a problem that the polluted air discharged from a local source such as a toilet is not systematically discharged to the outdoors. For this reason, exhausted polluted air has accumulated in the living room where the residents spend time during the day.

  Similarly at night, exhausted polluted air from local sources remained in the bedroom, where the number of people staying at home increased.

    Furthermore, in a system that ventilates a certain amount in recent years, ventilation adjustment according to humidity has not been systematically performed. Therefore, the amount of ventilation cannot be adjusted in summer when the temperature and humidity rise, and the amount of harmful substances such as formaldehyde is increased, and in the winter when the air is dry. In winter, problems such as overdrying occurred.

  In view of the above problems, an object of the present invention is to adopt a ventilation system according to humidity, to secure a minimum ventilation volume as necessary, and to discharge polluted air to the outdoors systematically according to the degree of pollution. It is.

  In addition, an object of the present invention is to adjust the ventilation amount according to the season, suppress the generation of harmful substances (formaldehyde, etc.) in summer, and prevent overdrying in winter.

    The object is to provide a ventilation unit according to claim 1, that is, means for sensing high and low humidity, a nylon ribbon that expands when sensing high humidity and contracts when sensing low humidity, and both ends of the nylon ribbon. A nylon ribbon frame having a movable part that slides in parallel to follow the shrinkage of the nylon ribbon, and one end is fixed to the nylon ribbon frame, and the nylon ribbon shrinks when the nylon ribbon extends. An elastic body that extends when the elastic body is wound, a shaft that winds and holds one end of the elastic body, and a rotating mechanism that pulls the tip toward the end of the main body when the elastic body expands; Opening and closing damper control means that rotates in parallel with the opening and closing damper with the insertion protrusion of the opening and closing damper inserted and fixedly connected on the plate, and the nylon ribbon senses high humidity When the opening / closing damper control means moves parallel to the end of the main body, the opening / closing damper rotates to the end of the main body to increase the opening area of the exhaust terminal opening, and the nylon ribbon senses low humidity. The open / close damper control means moves in parallel to the central part of the main body, and the open / close damper rotates in the direction of the central part of the main body to reduce the opening area of the exhaust terminal opening. Accomplished by a ventilation unit characterized by not closing.

    In a preferred embodiment of the present invention, as described in claim 2, the projecting end outer peripheral surface of the opening / closing damper is fitted so as to contact the inner peripheral surface of the hollow portion of the cylindrical stopper, and the opening area adjusting projection and the projecting end are fitted. By interposing a cylindrical stopper between the opening and closing part, the opening / closing damper is restrained from rotating in the direction of the body end, and the opening area is adjusted steplessly without closing the exhaust terminal beyond a predetermined area. It is characterized by that.

    In a preferred embodiment of the present invention, as described in claim 3, the side surface of the U-shaped stopper is brought into contact with the tip of the rack plate that meshes with the pinion rotating inside the holder under the power of the motor. The U-shaped stopper is placed on the rack plate pedestal, and the U-shaped stopper causes the rack plate sliding portion to extend from the front end of the opening / closing damper to the direction perpendicular to the rotation axis. Opening and closing damper to control the sliding of the fitting protrusion extending in the vertical direction from the front end of the section in the axial direction by contacting the notch at the center, and to keep the opening area of the exhaust terminal opening at a predetermined area or more It is characterized by controlling the right rotation of the.

    According to the ventilation unit according to the present invention, the minimum ventilation amount can be secured as necessary, and the contaminated air can be quickly discharged to the outdoors according to the degree of contamination, thereby achieving planned ventilation. be able to.

  Further, according to the ventilation unit according to the present invention, the ventilation amount can be adjusted according to the humidity for each season. Therefore, in the summer when the humidity is high, the ventilation amount is increased and the emitted harmful substances are discharged. Overdrying caused by constant ventilation can be prevented, and a safe living space can be provided to the occupant's body.

    Hereinafter, an example of an embodiment of a ventilation unit according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing an outline of a ventilation unit according to the present invention.

  The ventilation unit includes a main body 1, a lid body 2, a front lid body 2 a, and a backing 4. The front lid body 2 a has a discharge hole 5 in the center and is attached to the lid body 2 so as to be fitted. Screw holes for screwing the lid body 2 onto the main body 1 with screws are screwed on the back surface of the main body and the front surface (not shown) of the lid body 2 covered with the front lid body 2a.

  The material of the ventilation unit is preferably a lightweight plastic resin with excellent heat resistance. Polystyrene having styrene as a monomer is preferable.

FIG. 4 is a left side view of the ventilation unit according to the present invention.
FIG. 5 is a plan view of a ventilation unit according to the present invention.

    The size of the ventilation unit is compact with a length of 15 m, a width of 15 cm, and a height of 7.5 cm.

  The ventilation unit can be easily connected to an exhaust pipe that is screwed into an indoor living room wall member, extends in the vertical direction on the back surface of the wall member, and reaches an outdoor outlet. Thereby, the indoor contaminated air can be quickly and reliably discharged to the outdoors.

    The installation location can be widely used in accordance with the usage, such as a local source of contaminated air, for example, in a toilet or kitchen exhaust, or in a living room, study, bedroom, etc.

    FIG. 2 is a perspective view showing an outline of the internal structure of the elliptical cylindrical stopper-equipped ventilation unit according to the embodiment of the present invention.

  When the lid 2 screwed to the main body 1 is removed, a rectangular cylinder exhaust port (not shown) having a hollow portion from the upper surface of the main body to the backing is formed on the upper surface of the main body 1, and a nylon ribbon 6f that is humidity sensing means. A nylon ribbon holder 6 is fixedly attached.

    The exhaust port cover 8 is fitted to the inner peripheral surface of the exhaust port of the main body and has an unillustrated rectangular tube main body having an opening on the bottom surface, an edge portion 8a extending in a brim shape at the upper end of the main body, a knob portion 8b, a duct. (Exhaust terminal) 8c, bearing means 8d, and opening area adjustment protrusion 8e are provided.

  A rectangular tube body (not shown) has a sliding protrusion on the outer peripheral surface, and is detachably installed by fitting the sliding protrusion into a groove portion on the inner peripheral surface of the exhaust port of the main body.

The opening / closing damper 7 has a rotating shaft 7a and projecting end portions 7b and 7c which are branch shafts forming a right angle from both ends of the rotating shaft 7a.
The protruding end portion 7b extends in a direction perpendicular to the rotation shaft from both ends of the rotation shaft 7a. The other protruding end portion 7c extends from both ends of the rotation shaft 7a toward the bottom surface of the main body so as to rotate substantially parallel to the opening / closing damper. The tip end of the projecting end portion 7c forms an insertion projection 7d extending in the vertical direction from the end point.

One end of the opening / closing damper 7 is a rotating shaft 7a, and the periphery of the starting point and the ending point of the rotating shaft 7a is fitted to the bearing means 8d of the exhaust port cover 8, and is fixed rotatably.
The opening / closing damper 7 is supported by the bearing means 8d with the rotation shaft 7a, and rotates to the left to open a duct 8c leading to the exhaust port of the main body. The open / close damper 7 adjusts the ventilation amount by changing the opening area of the duct 8c in order to appropriately exhaust air in accordance with the humidity detection result of a nylon ribbon 6f which is a humidity detection means described later.

    The protruding end portion 7b is fitted into the inner peripheral surface of an elliptic cylindrical stopper 9 having an outer peripheral wall thickness and a hollow opening. When the opening / closing damper 7 rotates to the right and the duct 8c is closed, the protruding end 7b contacts the opening area adjustment protrusion 8e so that the duct 8c is not completely closed, and the opening / closing damper 7 is moved to the right. Rotation of Since the thick elliptical cylindrical stopper 9 is interposed between the protruding end portion 7b and the opening area adjusting projection 8e, the rightward rotation can be effectively suppressed.

    The projecting end portion 7c is sandwiched by a sandwiching portion 6a with a fitting projection 7d extending in the vertical direction from the tip. As will be described later, the holding portion 6a receives the humidity sensing result of the nylon ribbon 6f, and rotates the lower end of the nylon ribbon frame 6 together with a rotating mechanism 6d having a shaft for winding and holding one end of the elastic spring 6g. It is fixed on the moving plate.

    The protruding end portion 7c rotates in both the left and right directions as the holding portion 6a rotates in both the left and right directions, and the open / close damper 7 rotates in the left and right directions substantially in parallel with the protruding end portion 7c.

  The nylon ribbon frame 6 is divided into a fixed portion 6h and a movable portion 6l.

    The fixing portion 6h is fixedly attached to the upper surface of the main body, and forms a slit at one end near the rotation mechanism. The slit supports the support portion 6e of the rotation mechanism 6d and is connected to the rotation mechanism 6d via the support portion 6e. Further, the fixed portion 6h has a pin 6i on the side surface of the center portion of the main body, and guides the slit 6j of the movable portion 6l.

    The movable portion 61 is supported in parallel with the fixed portion 6h in such a manner that the slit 6j is guided by the pin 6i on the side surface of the center portion of the fixed portion 6h. The movable part 61 can slide in parallel to the fixed part 6h. The movable portion 6l includes a coil spring (not shown) that urges the movable portion 6l in the direction of the arrow inside, and slides in parallel with the direction of the arrow against the elasticity of the coil spring. It is pressed into place by the restoring force. Further, the movable portion 6l sandwiches both ends of the nylon ribbon 6f that is humidity sensing means, and slides in parallel following the contraction of the nylon ribbon 6f.

    The nylon ribbon 6f is humidity sensing means that expands when high humidity is sensed and contracts when sensed low humidity. The nylon ribbon 6f is clamped at both ends by a fastener 6n of the movable portion 6l in a state where the nylon ribbon 6f is extended to the maximum extent. When the nylon ribbon 6f is extended by sensing high humidity, the movable portion 6l is pressed to a predetermined position by its own elastic restoring force. On the other hand, when the nylon ribbon 6f contracts by sensing low humidity, the movable portion 6l is pressed and urged in the arrow direction by a coil spring (not shown).

  The spring 6g is supported by winding one end around a cylindrical shaft 6k formed in the vertical direction from the end of the protective plate 6m of the movable portion 6l, and the other end protruding from the rotation mechanism 6d. It is supported by being wound around a cylindrical shaft.

    The operation procedure of the elliptical cylindrical stopper-equipped ventilation unit according to the present invention is as follows.

The nylon ribbon 6f senses the level of humidity and stretches when the humidity is high.
Shrinks at low humidity. The nylon ribbon 6f is clamped at both ends by the fastener 6n of the movable portion 6l in a state where the nylon ribbon 6f is extended to the maximum extent. Pressed into position. In the case of low humidity, the nylon ribbon 6f contracts by relaxing the vicinity of the center, and the movable portion 6l slides parallel to the arrow direction following the contraction of the nylon ribbon 6f.

    When the nylon ribbon 6f senses high humidity, both ends are clamped by the fastener 6n of the movable part 6l in a fully extended state. Therefore, in the case of high humidity, the movable part 6l is a coil spring (not shown). Is pressed into a predetermined position by the self-elastic restoring force.

    The spring 6g contracts with the extension of the nylon ribbon 6f, and the tip of the rotating mechanism 6d having a cylindrical shaft that winds and holds one end of the spring 6g follows the contraction of the spring 6g, It is pulled toward the end. The opening / closing damper control means 6b connected to the rotating mechanism 6d and a single movable plate passing through the bottom surface of the nylon ribbon frame main body in the direction A ′ in FIG. 2 with the insertion protrusion 7d inserted into the hole 6c. Slide almost parallel.

    The projecting end portion 7c of the opening / closing damper 7 is rotated leftward toward the end of the main body via the fitting protrusion 7d sandwiched by the sandwiching portion 6a. With the projecting end portion 7c, the opening / closing damper 7 is moved to the projecting end portion 7c. It turns left almost parallel. At this time, the duct 8c is opened, and the opening area becomes the maximum value.

    FIG. 10 is a schematic diagram showing a state when the opening area is the maximum value when the outer peripheral surface of the protruding end 7b is fitted into the inner peripheral surface of the elliptical cylindrical stopper 9 according to the present invention.

Even if the thick elliptical cylindrical stopper 9 is interposed between the protruding end 7b and the opening area adjusting projection 8e, the maximum value of the opening area of the duct 8c is compared with the case where the elliptical cylindrical stopper 9 is not inserted. Does not change.
By ensuring a sufficient opening area of the duct 8c, contaminated air can be quickly discharged.

    On the other hand, when the nylon ribbon 6f senses low humidity, the nylon ribbon 6f contracts by relaxing the vicinity of the center. The movable portion 6l slides parallel to the arrow direction following the contraction of the nylon ribbon 6f.

    The spring 6g expands as the nylon ribbon 6f contracts, and the tip of the rotation mechanism 6d supported by the support 6e is pulled from the main body end direction to the main body center by the bias of the spring 6g. The opening / closing damper control means 6b, which is a single movable plate that passes through the bottom bottom gap of the nylon ribbon frame 6 and is connected to the rotating mechanism 6d, moves toward the center of the main body with the insertion protrusion 7d inserted into the hole 6c. Slide.

    The projecting end portion 7c of the opening / closing damper 7 rotates toward the center of the main body via the fitting protrusion 7d sandwiched by the sandwiching portion 6a. With the projecting end portion 7c, the opening / closing damper 7 moves to the projecting end portion 7c. It turns right in the direction of the central part substantially in parallel and tries to close the duct 8c. At this time, the opening area of the duct 8c becomes the minimum value, but the opening / closing damper 7 moves to the right due to the contact between the elliptical cylindrical stopper 9 fitted on the outer periphery of the protruding end b and the opening area adjustment protrusion 8e. And the duct 8c is not closed beyond a predetermined area (holding an opening position corresponding to a humidity of 50%).

    FIG. 9 is a schematic view showing a state when the opening area is the minimum value when the protruding end portion of the open / close damper is fitted into the elliptical cylindrical stopper according to the present invention.

    Since the thick oval cylindrical stopper 9 is interposed between the protruding end 7b and the opening area adjusting projection 8e, the minimum value of the opening area can be made larger than the conventional one.

    As described above, the duct 8c is prevented from being completely closed, and the minimum value of the opening area of the duct 8c is set large so that a minimum ventilation amount is ensured as necessary, and the local ventilation is locally applied according to the degree of contamination. It is possible to reliably and quickly discharge the contaminated air to the outdoors.

    FIG. 8 is a schematic view of a cross section taken along line AA ′ of FIG.

    By inserting an elliptical cylindrical stopper 9 on the outer peripheral surface of the projecting end 7b, the lower end of the elliptical cylindrical stopper 9 comes into contact with the opening area adjustment protrusion 8e, and the lowering is further Can not. With the contact between the elliptical cylindrical stopper 9 and the opening area adjustment protrusion 8e, the protruding end 7b, the protruding end c, and the fitting protrusion 7d extending in the vertical direction from the tip of the protruding end 7c stop rotating. The open / close damper control means 6b in which the insertion protrusion 7d is inserted into the hole 6c of the holding part 6a is also stopped in a state where the insertion protrusion 7d is inserted into the hole 6c, and the opening / closing damper 7 also stops rotating in the direction of the center of the main body. To do.

  Next, an example of an electric ventilation unit with a U-shaped stopper will be described.

  The electric ventilation unit with a U-shaped stopper according to the present embodiment can control the open / close damper by driving the electric motor regardless of the humidity sensing result of the nylon ribbon. Therefore, local ventilation can be performed promptly as needed.

  FIG. 3 is a perspective view showing an outline of the internal structure of the electric ventilation unit with a U-shaped stopper according to the embodiment of the present invention.

    When the lid 2 screwed to the main body 1 is removed, a rectangular cylinder exhaust port (not shown) having a hollow portion from the upper surface of the main body to the backing is formed on the upper surface of the main body 1, and a nylon ribbon 6f that is humidity sensing means. A nylon ribbon holder 6, a motor 10, a holder 11, and a battery attachment 13 are fixedly attached.

  Since the structure of the exhaust port cover 8 and the open / close damper is the same as that of the ventilation unit with the oval cylindrical stopper, refer to the description in paragraphs 0027 to 0030. In this embodiment, in order to stop the open / close damper at a position where the opening of the duct can hold a predetermined area (a position where 50% of humidity is secured), a U-shaped stopper is used instead of the elliptical cylindrical stopper 9. 3 is used.

    The operation procedure of the electric ventilation unit with a U-shaped stopper according to the present invention is as follows.

The motor 10 is connected to a pinion (small gear) (not shown) that is inside the holder 11 and meshes with a rack plate 12 (not shown).
The motor 10 is driven by turning on a power switch (not shown) provided on the indoor wall member. The power switch may be an on / off switching type similar to the type for a lighting fixture.

    The pinion (small gear) rotates by receiving power from the motor 10 and meshes with the rack plate 12 to urge the rack plate sliding portion 12a to linearly move.

    The sliding portion 12a of the rack plate 12 is placed on the pedestal portion 11b of the holder 11 and is guided in the axial direction by holding the vicinity of the tip from above and below by a projection 11c that protrudes on the pedestal portion 11b.

    The other projecting end 7b (not shown) of the rotation shaft 7a extends in the direction perpendicular to the rotation shaft from the tip of the rotation shaft 7a. The protruding end portion 7c extends from the distal end portion of the rotation shaft 7a toward the bottom surface of the main body so as to rotate substantially parallel to the opening / closing damper 7. The tip of the projecting end 7c forms a fitting projection 7d (not shown) that extends in the vertical direction from the end point.

  The rack plate sliding portion 12a has a notch (not shown) having a cross section parallel to the tip portion in the vicinity of the center portion. An insertion projection 7d extending in the vertical direction from the tip of the protruding end 7c is brought into contact with the notch.

The rack plate sliding portion 12a slides in the axial direction on the pedestal portion 11b in a state where the fitting protrusion 7d is brought into contact with a vertical section of the notch.
As the fitting projection 7d is pressed in the axial direction by the rack plate sliding portion 12a, the protruding end portion 7c of the opening / closing damper rotates leftward toward the main body end via the fitting projection 7d, and the protruding end With the portion 7c, the open / close damper 7 rotates to the left substantially parallel to the protruding end portion. When the open / close damper 7 rotates to the left, the duct 8c opens.

    In the present embodiment, in order to stop the left turn of the opening / closing damper 7 so as to hold the opening position corresponding to the area determined by the opening area of the duct 8c, a U-shape is used instead of the oval cylindrical stopper 9. Stopper 3 is used.

    FIG. 11 is a schematic view of a U-shaped stopper.

    The U-shaped stopper 3 is placed on the pedestal portion 11b with the side surface abutting against the tip of the rack plate sliding portion 12a so that the center line (B) is perpendicular to the axial direction of the pedestal portion 11b. Put.

    The front end portion of the rack plate sliding portion 12a is in perpendicular contact with the side surface of the U-shaped stopper 3 while sliding in the axial direction. The rack plate sliding portion 12a receives the power of the motor and tries to continue sliding in the axial direction. However, since the rack plate sliding portion 12a comes into contact with the U-shaped stopper, the rack plate sliding portion 12a may slide in the axial direction from the contacted position. Can not. The rack plate sliding portion 12a continues to hold the contact position while applying a force to the side surface of the U-shaped stopper 3 at a position perpendicularly contacting the side surface of the U-shaped stopper 3.

    The insertion protrusion 7d that has been pressed against the notch in the vicinity of the central portion of the rack plate sliding portion 12a and pressed in the axial direction causes the end of the main body to end as the rack plate sliding portion 12a cannot continue to slide in the axial direction. Stop turning left in the direction.

    The protruding end portion 7c of the opening / closing damper that has been turned to the left via the insertion protrusion 7d stops the left rotation toward the main body end as the insertion protrusion 7d stops the left rotation toward the main body end. .

    The opening / closing damper 7 stops turning to the left as the protruding end portion 7c of the opening / closing damper stops turning to the left in the body end direction. The open / close damper 7 stops turning to the left when the opening area of the duct 8c reaches a position where a predetermined area can be secured.

    As the rack plate sliding portion 12a receives the power of the motor and comes into contact with the U-shaped stopper 3 to continuously apply a force in the axial direction, the open / close damper 7 moves against the motor power from the stop position. Can no longer turn right. As a result of the opening / closing damper 7 becoming unable to rotate to the right of the stop position, the opening area of the duct 8c maintains an opening position corresponding to the determined area, and the opening area is not further reduced.

    When the nylon ribbon 6f senses a humidity higher than a predetermined area as a result of humidity sensing, the open / close damper 7 can further rotate to the left from the position where the rotation is stopped. As a result of the opening / closing damper 7 turning to the left from the stop position, the opening area of the duct 8c is larger than the opening position corresponding to the determined area.

  When the opening / closing damper 7c reaches the opening position corresponding to the area defined by the duct 8c and stops turning to the left, the operation of starting to turn left again by the humidity sensing result of the nylon ribbon 6f is as follows. It is as follows.

The nylon ribbon 6f senses the level of humidity and stretches when the humidity is high.
Shrinks at low humidity. The nylon ribbon 6f is clamped at both ends by the fastener 6n of the movable portion 6l in a state where the nylon ribbon 6f is extended to the maximum extent. Pressed into position. In the case of low humidity, the nylon ribbon 6f contracts by relaxing the vicinity of the center, and the movable portion 6l slides parallel to the arrow direction following the contraction of the nylon ribbon 6f.

    When the nylon ribbon 6f senses high humidity, both ends are clamped by the fastener 6n of the movable part 6l in a fully extended state. Therefore, in the case of high humidity, the movable part 6l is a coil spring (not shown). Is pressed into a predetermined position by the self-elastic restoring force.

    The spring 6g contracts with the extension of the nylon ribbon 6f, and the tip of the rotating mechanism 6d having a cylindrical shaft that winds and holds one end of the spring 6g follows the contraction of the spring 6g, It is pulled toward the end. The opening / closing damper control means 6b connected to the rotating mechanism 6d and a single movable plate passing through the bottom surface of the nylon ribbon frame main body in the direction A ′ in FIG. 3 with the insertion protrusion 7d inserted into the hole 6c. Slide almost parallel.

    The projecting end portion 7c of the opening / closing damper 7 is rotated leftward toward the end of the main body via the fitting protrusion 7d sandwiched by the sandwiching portion 6a. With the projecting end portion 7c, the opening / closing damper 7 is moved to the projecting end portion 7c. It turns left almost parallel.

    The other insertion protrusion 7d rotates left in such a manner that the rack plate sliding portion 12a escapes from the notch even if the tip end abuts against the U-shaped stopper 3 and cannot continue sliding in the axial direction. Is possible. At this time, the open / close damper 7 can be further rotated left from the position where the rotation in the left direction is stopped. As a result, the opening area of the duct 8c is larger than the opening position corresponding to the determined area. The opening area of the duct 8c can be expanded to the maximum value depending on the humidity sensing result.

    On the other hand, when the nylon ribbon 6f senses low humidity, the nylon ribbon 6f contracts by relaxing the vicinity of the center. The movable portion 6l slides parallel to the arrow direction following the contraction of the nylon ribbon 6f.

    The spring 6g expands as the nylon ribbon 6f contracts, and the tip of the rotation mechanism 6d supported by the support 6e is pulled from the main body end direction to the main body center by the bias of the spring 6g. The opening / closing damper control means 6b, which is a single movable plate that passes through the bottom bottom gap of the nylon ribbon frame 6 and is connected to the rotating mechanism 6d, moves toward the center of the main body with the insertion protrusion 7d inserted into the hole 6c. Slide.

    The projecting end portion 7c of the opening / closing damper 7 rotates rightward toward the center of the main body via the fitting protrusion 7d sandwiched by the sandwiching portion 6a, and along with the projecting end portion 7c, the opening / closing damper 7 has the projecting end portion 7c. To the right in the direction of the central portion substantially parallel to the center, and attempts to close the duct 8c.

    However, the rack plate sliding portion 12a receiving the power of the motor 10 is in a position where the rack plate sliding portion 12a is in contact with the side surface of the U-shaped stopper 3 perpendicularly, and the contact position is maintained while applying a force to the side surface of the U-shaped stopper. Keep holding.

  Therefore, the insertion protrusion 7d that has been pressed against the notch in the vicinity of the center portion of the rack plate sliding portion 12a and pressed in the axial direction continues to hold the contact position when the rack plate sliding portion 12a receives the power of the motor 10. Accordingly, the stop state is maintained without rotating in the right direction.

  The protruding end portion 7c of the opening / closing damper that has been rotated via the insertion protrusion 7d also maintains the stop state in the right direction as the insertion protrusion 7d maintains the stop state.

  The open / close damper 7 holds the stop state in the right direction as the protruding end 7c of the open / close damper 7 holds the stop state in the right direction. As a result of the opening / closing damper holding the stop state in the right direction at the opening position corresponding to the area determined by the opening area of the duct 8c, the opening area of the duct 8c is reduced from a value that secures the determined area. There is nothing.

As described above, according to the electric ventilation unit with a U-shaped stopper according to the present embodiment, the opening area of the duct 8c is set to the opening position corresponding to the determined area without completely closing the open / close damper 7. In the case of high humidity, ventilation can be performed by controlling the open / close damper. Thereby, the minimum ventilation volume can be ensured as needed.
In addition, it is possible to control the circulation of air so that the contaminated air is not circulated to other rooms by reliably discharging local air to the outdoors.
In addition, the amount of ventilation can be adjusted according to the season, the generation of harmful substances such as formaldehyde can be suppressed in the summer, and the overdrying caused by the constant ventilation can be prevented in the winter.

    The electric ventilation unit with a U-shaped stopper according to the present embodiment is driven by turning on the power easily by an on / off switching switch similar to the indoor lighting fixture. Thereby, the minimum ventilation volume can be ensured promptly as needed. In addition, since the contaminated air is quickly discharged to the outside without passing through other living rooms, the air flow in the entire living room can be controlled.

    The installation location of the electric ventilation unit with a U-shaped stopper according to the present embodiment may be a kitchen, a study room, a living room, etc. in addition to a local source of contaminated air such as a toilet. There is no restriction on the installation location, and it may be installed in a reception or a corridor if necessary.

It is a perspective view which shows the outline of the ventilation unit which concerns on this invention. It is a perspective view which shows the outline of the internal structure of the ventilation unit with an elliptic cylindrical stopper based on the Example of this invention. It is a perspective view which shows the outline of the internal structure of the electric ventilation unit with a U-shaped stopper based on the Example of this invention. It is a left view of the ventilation unit which concerns on this invention. It is a top view of the ventilation unit which concerns on this invention. It is the schematic which shows the distribution | circulation of the contaminated air in the room during the day at the time of using the conventional fixed ventilation system. It is the schematic which shows distribution | circulation of the contaminated air in a living room at the time of using the ventilation unit which concerns on this invention. It is the schematic of the cross section in the AA 'line of FIG. It is the schematic which shows the state in case the opening area is the minimum value at the time of inserting the protrusion edge part of an opening-and-closing damper in the elliptical cylindrical stopper which concerns on this invention. It is the schematic which shows the state at the time of opening area when the outer peripheral surface of a protrusion end part is inserted in the internal peripheral surface of the elliptical cylindrical stopper which concerns on this invention. It is the schematic of the U-shaped stopper based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ventilation unit 1a ... Body end 2 ... Lid 2a ... Front lid 3 ... U-shaped stopper 4 ... Bucking 5 ... Drilling hole 6 ... Nylon ribbon frame 6a ... Holding part 6b ... Open / close damper control means 6c ... Hole 6d ... Rotating mechanism 6e ... · Support portion 6f · · · Nylon ribbon 6g · · · Spring 6h · · · fixed portion 6i · · · pin 6j · · · slit 6k · · · shaft 6l · · · movable portion 6m · ... Protection plate 6n ... Fastener 7 ... Open / close damper 7a ... Rotating shaft 7b ... Projecting end 7c ... Projecting end 7d ... Protrusion 8 Exhaust port cover
8a ... Edge 8b ... Knob 8c ... Duct 8d ... Bearing means 8e ... Opening area adjusting projection 9 ... Elliptical cylindrical stopper 10 ... · Motor 11 ···· Holder 11a ··· Main body 11b ··· Base portion 11c ··· Projection 12 ··· Rack plate 12a · · · Sliding portion 13 ··· Battery attachment

Claims (3)

A means for sensing the level of humidity, a nylon ribbon that expands when sensing high humidity and contracts when sensing low humidity,
Nylon ribbon frame having a movable part that sandwiches both ends of the nylon ribbon and slides in parallel following the shrinkage of the nylon ribbon;
An elastic body, one end of which is fixed to the nylon ribbon frame, contracts when the nylon ribbon extends, and expands when the nylon ribbon contracts;
A rotation mechanism that includes a shaft that winds and holds one end of the elastic body, and the tip of the elastic body is pulled toward the end of the main body when the elastic body is extended;
An opening / closing damper control means which is fixedly connected to the rotation mechanism and connected to the movable plate and rotates in parallel with the opening / closing damper in a state where the insertion protrusion of the opening / closing damper is inserted;
With
When the nylon ribbon senses high humidity, the opening / closing damper control means moves parallel to the end of the main body, and the opening / closing damper rotates to the end of the main body to increase the opening area of the exhaust terminal opening. When the ribbon senses low humidity, the open / close damper control means moves in parallel to the central part of the main body, and the open / close damper rotates in the direction of the central part of the main body to reduce the opening area of the exhaust terminal opening. , Do not close more than the specified area,
Ventilation unit characterized by By fitting the outer peripheral surface of the projecting end of the open / close damper so as to contact the inner peripheral surface of the hollow portion of the cylindrical stopper, and interposing the cylindrical stopper between the opening area adjustment projection and the projecting end, the main body of the open / close damper Suppressing rotation in the direction of the end, adjusting the opening area steplessly without closing the exhaust terminal beyond the defined area,
The ventilation unit according to claim 1. The U-shaped stopper is placed on the rack plate base so that the side surface of the U-shaped stopper comes into contact with the tip of the rack plate that meshes with the pinion rotating inside the holder under the power of the motor. With the U-shaped stopper, the rack plate sliding part abuts the insertion protrusion extending in the vertical direction from the tip of the protruding end extending from the tip of the opening / closing damper to the rotation axis in the center notch Controlling the sliding of the opening / closing damper to the right so as to control the sliding in the axial direction, and to maintain the opening area of the exhaust terminal opening at a predetermined area or more,
The ventilation unit according to claim 1.

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