JP2009085499A - Shutter structure of intake fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of conventional shutter structure with a movable shutter plate for opening and closing an intake fan wherein, since the shutter plate intercepts the flow of air, and a swirl flow or a turbulent flow of blowout air is generated, the required streamlining of air cannot be secured, noise is generated frequently, and the blowout air cannot be blown in the distance, particularly, in a small intake fan, since the blowout air cannot be blown in the distance, a capacity thereof becomes insufficient, and the number of the fans to be installed must be increased, and therefore, disadvantages by that are caused. <P>SOLUTION: In this shutter structure of an intake fan, two wings movable by air is pivotally supported to the intake side of a casing formed in a body of the intake fan having a fan and a motor. A pair of movable rods movable through an operating projection operated by two the wings are pivotally supported to the outer peripheral surface of the casing. Also the blowout side of the intake fan is closed through the pair of shutters movably installed at the pair of movable rods. Also, a returning means for returning the shutters and/or movable rods is installed between the casing and the movable rods. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shutter structure of an intake fan for a house (for farming such as a greenhouse and for livestock such as cows and pigs, or for a factory / household).

  Conventionally, a shutter of a ventilating fan for this type of house has been provided with useful means for each purpose (shutter structure) for the purpose of enhancing the shutter function. For example, the shutter structure of a ventilation fan for a house adopts a structure in which a shutter plate is opened and closed (movable) with the intention of closing the outlet side of the casing (outside the house room), and with an insect net. In the structure of the ventilation fan, a structure in which an insect net is stretched on the suction side (house inner surface) of the casing is adopted. And this ventilation fan with an insect repellent net has the feature that the use of agricultural chemicals is reduced, food safety, beneficial use of insects, and environmental maintenance in each field can be achieved.

  In this conventional structure, the following improvements can be considered. First, in a structure where a movable shutter plate is provided to open and close the ventilation fan, this shutter plate blocks the flow of wind, so vortex and turbulence of the blown air is generated, and the necessary rectification cannot be secured. Or, there are problems such as being a cause of noise generation, and improvements such as inability to blow the blown air far away. In particular, in the case of a small ventilation fan, the fact that the blown air cannot be blown far away is a lack of capacity, and an increase in the number of installed units and the resulting economic disadvantages are strongly demanded. It is a place.

  In addition, the ventilating fan having a conventional structure and provided with a spiral rectifying means (rectifying plate) is rectifying by this rectifying plate, and in order to reliably eliminate vortex flow and turbulence and / or noise of the blown air. The structure of the current plate is not necessarily sufficient. The elimination of this improvement is strongly desired by the industry.

  As a means for solving the above improvement, the prior literatures have been investigated, and the results are listed below as literatures and the outline thereof will be described.

  Document 1 is “exhaust structure of ventilating fan” disclosed in Japanese Patent Application Laid-Open No. 2002-130182. As described in claim 1, this invention is divided into two so as to cut the exhaust path vertically in the exhaust path downstream of the ventilating fan. A symmetrical butterfly shutter member is provided, and the upper ends of both ends of each shaft, which is the rotation center of the shutter member, are displaced to the indoor side by the lower end portion and are pivotally supported. It has a structure in which the resistance is smaller than that of a single plate shutter member and the exhaust fan is closed when the ventilation fan is not in operation. It is intended to provide an exhaust fan exhaust structure that can be ventilated even if an output exhaust fan is used, and to simplify the exhaust fan exhaust structure.

  Reference 2 is a “ventilator” disclosed in Japanese Patent Application Laid-Open No. 2004-301497. As described in [0056] of the specification, this invention “operates the knob of the shutter opening / closing means and moves to the solid line position in the drawing. When the air supply shutter provided on the lateral movement tool moves, the air supply path is closed, and the projection of the exhaust shutter engaged with the engagement recess provided on the lateral movement tool moves to The shutter is movable clockwise through the fulcrum and the exhaust path is closed by the exhaust shutter. The effect is that “rain or snow intrudes into the room when the ventilator is shut down or during a storm. Intended to avoid.

JP 2002-130182 A JP 2004-301497 A

  The document 1 has a feature that a symmetrical butterfly shutter member divided into two so as to cut through the exhaust passage is provided (interior) in the exhaust passage downstream of the ventilation fan. However, since this shutter member and its receiving portion exist in the exhaust path, this structure has problems such as the possibility of hindering rectification and causing noise. And in this literature 1, since there is no special structure as a rectification | straightening means, the room of improvement can be considered in terms of a rectification effect, the ventilation to a distant place, the reduction | decrease in the number of installation, etc.

  Further, Document 2 is a structure that closes the exhaust path of the ventilation device, and is a structure that closes through the lateral movement of the air supply shutter, and has the space for moving the air supply shutter and the device. It is considered that the shutter structure of the intake fan for a house intended by the present invention cannot be adopted. Further, since no rectifying means is required, there is a difficulty in diverting the house intake fan as the shutter structure intended by the present invention.

  And the ventilation fan with an insect repellent net mentioned above has the outstanding surface which can eliminate the use of an agrochemical and can achieve cost reduction. Based on the advantages of this ventilation fan with insect repellent nets, meetings and subcommittees were launched by the government to reduce costs and further improve house management efficiency and resource saving. ing. For example, there is a group of which the applicant is a member (for example, “house environment control group”). In this subcommittee, the ventilation fan (intake fan) which this invention intends has shown the important position, and there are various requests. The demands include, for example, a structure that does not use resources for the operation of the intake fan and / or ancillary equipment, a cost reduction related to the intake fan apparatus and / or maintenance, and a simplified structure. Has been discussed.

  In view of the above-mentioned recent needs and / or discussions, the present invention is a simple intake fan having a structure that can satisfy this, and a structure that quickly closes the blow-out side by stopping the blowing from the fan and / or It is intended to provide an air intake fan having a shutter structure that can be opened and closed simply and without power via air blown from a fan, and a structure of a moving position at the open limit of the shutter.

  The invention of claim 1 is a structure that rectifies via two blades and / or rectifying means, and reliably eliminates vortex flow and turbulent flow and / or noise of the blown air, from the industry side. It is intended to respond to demands and to enable distant blowing (air blowing). Further, the invention of claim 1 is intended to reliably close (close) the blower side of the intake fan, and to prevent rain and snow from entering the room when the intake fan is stopped or stormy. The invention of claim 1 has a structure in which the shutter of the intake fan is accommodated adjacent to the outer peripheral surface of the casing, ensures the accommodation space and rectifies the blown-out air of the casing, and brings about this rectification. Intended to achieve effects, for example, rationalization, economic improvement, resource and energy saving, and maintenance of the global environment.

Claim 1 is an intake fan in which a fan and a motor for the fan are provided in the intake fan body,
A casing is provided on the intake fan body, and at least two blades that are movable by blowing are pivotally supported on the suction side of the casing, and an operation projection that is operated by the two blades is provided on the casing. A pair of movable rods movable via protrusions are pivotally attached to the outer peripheral surface of the casing, and the pair of movable rods are movable to the pair of movable rods so that the blower side of the intake fan is connected to each other through a pair of shutters. In addition to being configured to close, the shutter and / or a return means comprising a spring, an elastic string, and an actuator (preferably without power) for controlling the return of the movable rod is provided between the casing and the movable rod. This is a shutter structure of an intake fan.

  The invention of claim 2 is intended to achieve the object of claim 1 and to provide the operation projection of the intake fan and the structure of the movable rod to achieve the object.

A second aspect of the present invention relates to an intake fan in which a fan and a fan motor are provided on the intake fan main body according to claim 1.
A pair of operating projections that operate with the two blades are provided through the inner and outer peripheral surfaces of the casing, and one side of the pair of movable rods movable through the pair of operating projections, The intake fan shutter structure is configured such that the vertical side of the pair of operating projections and the other side are pivotally attached to the outer peripheral surface of the casing.

  The invention of claim 3 is intended to achieve the object of claim 1, and to achieve this object, the intake fan is provided with a rectifying means.

Claim 3 is the intake fan shutter structure according to claim 1,
This is a shutter structure for an intake fan in which a spiral rectifying means is provided inside the outlet on the outlet side of the casing.

  The invention of claim 4 is intended to achieve the object of claim 1 and to provide an optimum shutter overall structure for the intake fan in order to achieve this object.

Claim 4 is the shutter structure of the intake fan according to claim 1,
A tapered guide piece for sliding the outer peripheral surface of the casing is provided on the inner surface of the shutter, and the pivoting side of the shutter reaches the outer peripheral surface of the casing through the movement of the movable rod. Using the fact that the movable rod slides and moves on the outer peripheral surface, the pivoting side of the shutter moves with a slight distance to the outer peripheral surface, and at the time of this movement, the inner surface of the guide piece is moved to the outer peripheral surface. This is a shutter structure for an intake fan that is slid on the surface and configured so that the casing can move smoothly.

  The invention of claim 5 achieves the object of claim 4 and, in order to achieve this object, the intake fan is intended to provide a structure of an optimal shutter opening movement position.

Claim 5 is the shutter structure of the intake fan according to claim 4,
The inner surface of the shutter is a shutter structure of an intake fan that is configured to be in close contact with the outer peripheral surface of the casing and to be accommodated compactly in the open limit.

  The invention of claim 6 is intended to achieve the object of claim 1 and to provide an optimal shutter rotation structure for the intake fan in order to achieve the object.

Claim 6 is the shutter structure of the intake fan according to claim 1,
This is a shutter structure for an intake fan in which a sheath tube is formed on the pivotally attached side of the shutter, and this sheath tube is loosely fitted to the U-shaped vertical portion of the movable rod.

  The invention of claim 7 achieves the object of claim 1, and in order to achieve this object, the intake fan is intended to provide an optimum shutter return means.

Claim 7 is the shutter structure of the intake fan according to claim 1,
The return means includes, on one side of the pair of movable rods, a spring and an elastic cord on one side that are secured by passing, and a spring and an elastic cord on the other side secured on the other side of the pair of movable rods, This is a shutter structure of an intake fan configured to be fixed to a protruding piece of a shutter supporting sheath tube that is loosely fitted to the movable rod.

  The invention of claim 8 achieves the object of claim 1, and in order to achieve this object, the intake fan is intended to provide a structure of an operating projection that operates an optimum shutter.

Claim 8 is the shutter structure of the intake fan according to claim 1,
The operating protrusion is a shutter structure of an intake fan that is configured by a vertical portion and an operating portion that extends from the vertical portion and is bent at a substantially right angle.

  The invention of claim 9 is intended to achieve the object of claim 1 and to provide an optimum shutter configuration for the intake fan in order to achieve the object.

Claim 9 is the shutter structure of the intake fan according to claim 1,
The intake fan shutter structure is configured such that a notch portion is provided on one or the other side of the vane plate so as not to collide with an inner peripheral surface of the casing at a corner end portion on the open side.

  The invention of claim 10 is intended to achieve the object of claim 1 and to provide an intake fan provided with this insect net to achieve this object.

Claim 10 is the shutter structure of the intake fan according to claim 1,
The structure is provided with a stopper holding body for an insect repellent net, which is provided on the suction side of the casing, and a stopper fastening body inserted into the holding body, through the holding body and the fastening body, This is a shutter structure of an intake fan in which an insect repellent net is detachably provided.

  The invention of claim 11 is intended to achieve the object of claim 1 and to provide an intake fan equipped with this hood in order to achieve this object.

Claim 11 is the shutter structure of the intake fan according to claim 1,
A frame structure for mounting an intake fan, or a shutter structure for an intake fan configured to provide a hood on the main body to prevent rain, prevent wind, or protect the intake fan shutter.

  According to the first aspect of the present invention, in the intake fan provided with a fan and a fan motor in the intake fan body, the intake fan body is provided with a casing, and at least two blades movable by blowing are provided on the suction side of the casing. A pair of movable rods that are pivotally supported and actuated by two blades are provided on the casing, and a pair of movable rods that are movable via the movable projections are pivotally attached to the outer peripheral surface of the casing, and are movable to the pair of movable rods. And a configuration in which the blower side of the intake fan is closed through a pair of provided shutters, and a return means including a spring, a stretchable string, and an actuator for controlling the return of the shutter and / or the movable rod, a casing and a movable rod It is the shutter structure of the intake fan made into the structure provided between.

  Therefore, claim 1 is a structure for rectifying via two blades and / or rectifying means, which reliably eliminates vortex flow and turbulent flow and / or noise of the blown air, from the industry side. It has features such as being able to respond to demands and enabling blowout (air blowing) to a distant place. Further, the first aspect of the present invention has an advantage that the intake side of the intake fan is reliably closed (closed) so that rain and snow can be prevented from entering the room when the intake fan is stopped or stormy. And Claim 1 makes it the structure which accommodates the shutter of an intake fan adjacent to the outer peripheral surface of a casing, ensuring the accommodation space and the rectification | straightening of the blowing air of this casing, the effect which this rectification brings about, For example, it is characterized by rationalization, improved economic efficiency, resource and energy saving, and the maintenance of the global environment.

  According to a second aspect of the present invention, there is provided an air intake fan in which a fan and a motor for the fan are provided on the air intake fan main body according to the first aspect, and a pair of operating projections that are operated by two blades are provided on the inner and outer peripheral surfaces of the casing And one side of the movable pair of movable rods is pivotally connected to the vertical portion side of the pair of operating projections and the other side is pivotally attached to the outer peripheral surface of the casing through the pair of operating projections. It is the shutter structure of the intake fan which was comprised.

  Accordingly, the second aspect has the characteristics that the object of the first aspect can be achieved, and in order to achieve the object, the operation projection of the intake fan and the structure of the movable rod can be provided.

  The invention of claim 3 is the shutter structure of the intake fan according to claim 1, wherein the spiral fan rectifying means is provided inward of the outlet on the outlet side of the casing. is there.

  Accordingly, the third aspect has the characteristics that the object of the first aspect can be achieved, and in order to achieve the object, the rectifying means can be provided in the intake fan.

  According to a fourth aspect of the present invention, there is provided a shutter structure for an intake fan according to the first aspect, wherein a tapered guide piece for sliding the outer peripheral surface of the casing is provided on the inner surface of the shutter, and the pivoting side of the shutter is a movable rod. Using the fact that the movable rod slidably moves on the outer peripheral surface in a state of reaching the outer peripheral surface of the casing through the movement of the movement, the pivoting side of the shutter moves with a slight interval on the outer peripheral surface, This is a shutter structure of an intake fan in which the inner surface of the guide piece is slid on the outer peripheral surface during movement and the casing can move smoothly.

  Accordingly, the fourth aspect has the characteristics that the object of the first aspect can be achieved, and the optimum structure of the shutter can be provided to the intake fan in order to achieve the object.

  According to a fifth aspect of the present invention, there is provided a shutter structure for an intake fan according to the fourth aspect, wherein the inner surface of the shutter is in contact with the outer peripheral surface of the casing in the open limit so as to be accommodated in a compact manner. The shutter structure.

  Accordingly, the fifth aspect has the characteristics that the object of the fourth aspect can be achieved, and in order to achieve the object, the intake fan can be provided with a structure of a moving position at an optimum shutter opening limit.

  The invention of claim 6 is the shutter structure of the intake fan according to claim 1, wherein a sheath tube is formed on the pivotally attached side of the shutter, and the sheath tube is loosely fitted to the U-shaped vertical portion of the movable rod. This is a shutter structure of an intake fan configured as described above.

  Accordingly, the sixth aspect has the characteristics that the object of claim 1 can be achieved, and in order to achieve the object, an optimum shutter rotation structure can be provided to the intake fan.

  The invention of claim 7 is the shutter structure of the intake fan according to claim 1, wherein the return means is one side of the pair of movable rods, one side spring fixed to each other, a stretchable string, This is a shutter structure of an intake fan that is structured such that a spring on the other side fixed to the other side of a pair of movable rods and a stretchable string are fixed to a protruding piece of a sleeve tube for shutter support that is loosely fitted to the movable rod. .

  Accordingly, the seventh aspect has the characteristics that the object of claim 1 can be achieved, and in order to achieve this object, an optimum shutter return means can be provided to the intake fan.

  The invention according to claim 8 is the shutter structure of the intake fan according to claim 1, wherein the operating projection is formed of a vertical portion and an operating portion extending from the vertical portion and bent at a substantially right angle. The intake fan shutter structure.

  Accordingly, claim 8 has the characteristics that the object of claim 1 can be achieved, and in order to achieve this object, the structure of the operation projection that operates the optimum shutter can be provided to the intake fan.

  The invention of claim 9 is the shutter structure of the intake fan according to claim 1, so that it does not collide with the inner peripheral surface of the casing at the corner end on the open side on one or the other side of the blade. This is a shutter structure of an intake fan having a configuration in which a notch is provided.

  Accordingly, the ninth aspect has the characteristics that the object of the first aspect can be achieved, and that an optimum shutter configuration can be provided to the intake fan in order to achieve the object.

  The invention of claim 10 is the shutter structure of the intake fan according to claim 1, wherein the insect holder net holder is provided on the suction side of the casing, and the fastener fastening is inserted into the holder. A shutter structure for an intake fan in which an insect repellent net is detachably provided via a holding body and a tightening body.

  Accordingly, the tenth aspect has the features that the object of the first aspect can be achieved, and in order to achieve the object, an intake fan provided with the insect net can be provided.

  The invention of claim 11 is the shutter structure of the intake fan according to claim 1, wherein a hood is provided on a frame body or a main body to which the intake fan is attached, so that rain protection, wind countermeasures, or intake fan shutter protection countermeasures are provided. This is a shutter structure of an intake fan configured to achieve the above.

  Accordingly, claim 11 has features such that the object of claim 1 can be achieved, and in order to achieve this object, an intake fan provided with this hood can be provided.

  An example of the present invention will be described.

  FIG. 1 is a perspective view of a state in which the shutter is closed as viewed from the front, and FIG. 2 is a view of the state in which the shutter is opened and the shutter is attached to the outer peripheral surface of the casing. FIG. 3 is a perspective view, FIG. 3 is an enlarged perspective view of a main part showing a vertical portion and a bent portion of an operating projection penetrating the casing, and showing a relationship with two wing bodies (wind plates), FIG. FIG. 5 is an enlarged perspective view of a main part showing a state in which the operating projection shown in FIG. 3 is pressed by a blade body that is maximally movable (fully opened by wind from the fan), and FIG. 5 is an exploded view of the main body of the intake fan FIG. 6 is a plan view showing the relationship between the movable rod, the casing, and means for returning the movable rod (returning means), and FIG. And a perspective view showing the relationship with the means for returning the movable rod (return means), 7-2 is an enlarged plan view of the main part of FIG. 7-1, FIG. 8 is a rear perspective view of the intake fan, FIG. 9 is a perspective view of a state where an insect net is attached to the inside of the house of the intake fan, FIG. Figs. 10-2 (a) to (c) are conceptual views from the plane, front and bottom directions showing the closed state of the shutter, and Figs. 10-2 (a) to (c) are linked to the movement of the wing body. Figures 10-3 (a) to (c) are conceptually shown from the plane, front, and bottom directions showing the state of starting to move, and the shutter moves in conjunction with the movement of the wing body. FIGS. 10-4 (a) to (c) are conceptual views from the plane, front, and bottom directions showing the state of starting the shutter, and FIGS. Each figure shown conceptually, FIG. 11 is the perspective view which showed the state which provided the hood in the frame of the intake fan, or the main body, FIG. It is a perspective view showing another example.

  In the figure, reference numeral 1 denotes a frame attached to a pillar of a house (not shown). This frame 1 has a plate-like intake fan main body 2 (referred to as a main body 2) having an opening 2a and a bell mouth 2b. Is installed. The main body 2 is provided with a motor 4 and a fan 5 provided on an output shaft of the motor 4 via a bracket 3. The main body 2 has an annular opening 2a, and the motor 4 and the fan 5 are provided in the opening 2a. In the figure, reference numeral 6 denotes a guard for the fan 5, which is provided if necessary. The fan 5 operates via the rotation of the motor 4 and blows air.

  The main body 2 is provided with an annular casing 8 (not limited to an annular shape, the same applies to other members) provided with an inner peripheral surface 8a aligned with the opening 2a and an outer peripheral surface 8b. The casing 8 has a predetermined width 800 and desirably has a converging portion that converges toward the blowing side 801. In the figure, reference numeral 802 denotes the suction side of the casing 8. And by making this casing 8 a structure having a long width 800 and a converging part, the air sucked from the suction side 802 (via the fan 4) is converging through the converging part. Further, the air flow is rectified, sent to the blowing side 801 of the casing 8, and discharged toward the far side from the blowing side 801.

  The blowout side 801 of the casing 8 is provided with a pair of shutters 10 (in principle, described as one shutter) having a semicircular disk shape that closes the blowout port 801a. Then, by sequentially changing (moving) from the state of FIG. 10-1 (A) to the state of FIG. 10-4 (A), the air outlet 801a is opened, and finally, FIG. -4 (a), the outer peripheral surface 8b of each casing 8 is contacted (the pivot side 10a of the shutter 10 is located on the suction side 802, and the tip side 10b of the shutter 10 is located on the outlet side 801). . Then, when the fan 4 is stopped, it returns via the return means described later, sequentially changes to the reverse state described above, returns to the initial state, and closes the outlet 801a on the outlet side 801 (FIG. 10-). 1 (A) state). The pair of shutters 10 is provided with a flange 1000 in order to reliably close the shutter. Further, as will be described later, a structure is adopted in which the shutter 10 is provided with the flange 1000 and the shutter 10 does not include the flange 1000 and returns to the earlier position. In the figure, reference numeral 802a denotes a suction port on the suction side 802. The suction port 802a is aligned with the opening 2a of the main body 2.

  Therefore, the U-shaped movable rod 11 that supports the shutter 10 and ensures this movement will be described. The sheath tube 1001 provided on the pivot side 10a of the shutter 10 is fitted into the vertical portion 11a of the movable rod 11. Further, the tip of the other bent portion 11b that extends from the other side (upper side) of the vertical portion 11a and is bent in a perpendicular direction is pivotally attached to the center of the substantially top surface of the outer peripheral surface 8b of the casing 8. . Further, the front end of one bent portion 11c that extends from one side (lower side) of the vertical portion 11a and is bent in a right angle direction penetrates the substantial center of the bottom surface of the outer peripheral surface 8b of the casing 8. And in this example, it is the structure which makes the free end of this one bending part 11c the actuating protrusion 12. FIG. As shown in FIG. 3 and FIGS. 10-1 to 10-4, the operating projection 12 is formed by a vertical portion 12a erected on the inner peripheral surface 8a, and bent in a direction perpendicular to the vertical portion 12a. And it comprises with the action | operation part 12b which becomes a substantially right angle with respect to the bending direction of the said one bending part 11c. Therefore, as shown in FIG. 10A, the shutter 10 closes the air outlet 801a, and the other bent portion 11b and the one bent portion 11c are positioned in a substantially inverted C shape in the casing 8 (in plan view). And the operating portion 12b of the operating projection 12 is positioned toward the suction side 802 and the outlet side 801 of the casing 8, and the free end 12b-1 of the operating portion 12b is directed toward the suction side 802. It is a structure that is suitable for a substantially inverted C shape. In this state, the one bent portion 11c and the other bent portion 11b of the movable rod 11 have the same positional relationship as the operating portion 12b. When the wing body 15 is moved (pressed) by the air blown from the fan 4, a pressing force is generated on the wing body 15. This pressing force becomes a force for moving the operating portion 12b of the operating projection 12, and in this example, the operating portion 12b moves "follows" with the vertical portion 12a as a fulcrum. Specifically, as shown in FIG. 10-2 to FIG. 10-4, the operating portion 12b is driven by the movement of the wing body 15, and the first substantially inverted C shape is collapsed, and finally, the pair of operating portions 12b. Are parallel, with the free end 12b-1 facing the suction side 802 and the vertical portion side 12b-2 (fulcrum side) facing the blowing side 801. Further, the movement of the operating portion 12b and the vertical portion 12a will be described in order because the movable rod 11 linked to the vertical portion 12a and the shutter 10 pivotally attached to the movable rod 11 are movable.

  The movement of the wing body 15, the operating portion 12 b and the movable rod 11, and the movement of the shutter 10 and / or the linkage thereof will be described below. The first state of “1” is FIG. That is, in the state where the other / one bent portion 11b, 11c is positioned in a substantially inverted C shape on the outer peripheral surface 8b of the casing 8 and the vertical portion 12a is positioned in the vicinity of the outlet side 801 of the casing 8, 10 is the state which closed the blower outlet 801a. The next state after “2” is shown in FIG. That is, when the wing body 15 (described later) is pressed by the wind pressure (indicated by the air blow X by the fan 5) and the open side 15a is pressed, the wing body 15 moves about the pivot portion 15b as a fulcrum. By this movement, the operation portion 12b of the operation protrusion 12 is pressed and moved, and the operation protrusion 12 is moved around the vertical portion 12a. Since the movement of the vertical portion 12a is transmitted to the entire movable rod 11 via the one-folded portion 11c, the movable rod 11 is pivotally supported by the vertical portion 12a of the operating projection 12 and the casing 8. It can be moved around the pivot point of 杆 11. Accordingly, the shape of the substantially inverted C shape of the one / other bent portions 11c and 11b starts to collapse, and the vertical portion 11a of the movable rod 11 moves in the direction of the arrow “I” toward the radial direction, Move outside the surface 8b. The shutter 10 moves away from the air outlet 801a through the movement of the one / other bent portions 11c and 11b. The separation from the air outlet 801a is also a press by the air blow “X”. The continuation state of “3” is a structure in which the operation described in “2” further proceeds in FIG. That is, the wing body 15 is moved by the wind pressure, the open side 15a thereof is pressed, and the pivoting portion 15b is used as a fulcrum. By this movement, the vertical portion 12a of the operating projection 12 and the vertical portion 11a of the movable rod 11 are further moved in the arc “B” along an arcuate locus (the vertical portion 11a of the movable rod 11 is moved from the outer peripheral surface 8b. The first and the other bent portions 11c and 11b are movable, and are movable up to a direction “Y” substantially orthogonal to the width 800 direction of the casing 8. And the shutter 10 leaves | separates substantially the whole from the blower outlet 801a through the movement of this one and the other bending parts 11c and 11b. The separation from the air outlet 801a is also a press by the air blow “X”. The final state of “4” is a structure in which the operation described in “3” further proceeds in FIG. That is, the wing body 15 is moved by the wind pressure, the open side 15a thereof is pressed, and the pivoting portion 15b is used as a fulcrum. Due to this movement, the pressing force of the wing body 15 is applied to the operating portion 12b of the operating projection 12, so that the operating portion 12b and the vertical portion 11a of the movable rod 11 are further moved in the direction of the arrow “c”. It is movable (the vertical portion 11a of the movable rod 11 is further separated from the outer peripheral surface 8b in a state of returning from the radial direction), and the one and the other bent portions 11c and 11b are movable so that the width of the casing 8 is in the 800 direction. , And move to a position “Z” beyond a position substantially orthogonal. The shutter 10 is disposed so as to be in contact with the outer peripheral surface 8b of the casing 8 through the movement of the one / other bent portions 11c and 11b (open limit). In this example, the pivoting side 10 a of the shutter 10 is disposed on the suction side 802 of the casing 8, and the tip side 10 b of the shutter 10 is disposed on the outlet side 801 of the casing 8. Further, in this state, as described above, the wing body 15 and the operating portion 12b are in a substantially parallel state on the inner peripheral surface 8a of the casing 8. In other words, the pressing force of the wing body 15 against the operating portion 12b is released. This state is a state in which the continuous blowing “X1” by the fan 5 is performed. Then, when the blowing “X1” by the fan 5 is stopped, the wind pressure on the blade plate 15 is released and the repulsion of the springs 20 and 21 described later is applied to the first of FIGS. 10-4 to 10-1. It is the structure which returns to the state of. In addition, in this example, the movable rod 11 and the operating projection 12 are integrally structured. However, the movable rod 11 and the operating projection 12 may be separate, and the main point is not limited as long as the movement of the operating projection 12 is transmitted to the movable rod 11. As another example of the movable rod 11, it can be replaced by other means such as a cylinder or a manpower. In addition, by enabling remote operation from a remote location, for example, when not in the vicinity of the house, when not in a remote location such as another house or home, or in the event of a disaster such as a typhoon, or other emergency It is effective in dealing with

  The present invention is characterized in that it is installed on the outer peripheral surface 8b of the casing 8 in the structure of the blade plate 15 and / or the opening limit of the shutter 10 (when retracted). There are benefits that prevent noise and save space.

  In the figure, reference numeral 15 denotes a rectangular blade. The blade 15 is pivotally mounted in a pair about the center of the inner peripheral surface 8a of the casing 8 and is movable by the wind from the fan 5. . In order to achieve this movement, a notch 1500 is provided at the corner 15 a-1 on the open side 15 a so as not to collide with the inner peripheral surface 8 a of the casing 8. The vane plate 15 is sequentially changed from the state of FIG. 10-1 (A) to the state of FIG. 10-4 (A) by the wind pressure from the fan 5, and the pair of blade bodies 15 are parallel to each other. (State of FIG. 10-4 (A)), it can contribute to the generation of rectification while avoiding wind resistance. Then, when the fan 5 is stopped, the fan 5 returns via a return means described later, returns to the initial state (the state shown in FIG. 10-1 (A)), and exhibits a substantially C shape when viewed from the bottom. The number of blades 15 is ideally two. However, the present invention is not limited to this example, and in consideration of wind pressure, quick operation, etc., it is also possible to capture the wind effectively by using a structure of two or more sheets.

  The return means includes a pair of other springs 18 (including other elastic means, for example, an elastic string, an actuator such as a cylinder, etc., and in principle, only one of them will be described) for each movable rod 11. Are provided between the base end side of the other bent portion 11b and the projecting piece 1001a of the sheath tube 1001 provided on the pivot side 10a of each shutter 10. One spring 19 is provided between the base end side of the one bent portion 11 c of the movable rod 11 and the approximate center of the width 800 of the bottom surface of the outer peripheral surface 8 b of the casing 8. The springs 18 and 19 are tensioned or repelled (returned) by the above-described movement of the wing body 15. The tensioning is stopped when the wing body 15 is moved by the wind from the fan 5 and progresses as it is released and becomes parallel. This state is maintained as long as the blowing from the fan 5 continues. The operations of the springs 18 and 19 are tensioned by the movement of the movable rod 11 described with reference to FIGS. 10-1 to 10-4 and the movement of the sheath tube 1001 and / or the projecting piece 1001a based on this movement. The Moreover, it is a structure repelled (releasing tension) by the reverse movement (return). The structure of the springs 18 and 19 is an example, and the other means described above, or the springs 18 and 19 can also have different attachment methods.

  In the configuration in which the flange 1000 is provided on the distal end side 10b of the one shutter 10 described above, the other shutter 10 is returned first, and the flange 1000 is attached to the front surface of the other shutter 10. In order to obtain a structure, the force of the springs 18 and 19 is adjusted. For example, the force of one spring 18, 19 corresponding to one shutter 10 <the force of the other spring 18, 19 corresponding to the other shutter 10 is set. The force relationship between the springs 18 and 19 is such that the movable rod 15 and the like move when the shutter 10 is opened, but there is no direct relationship between the movement and the like.

  In the figure, reference numeral 20 denotes a device for attaching the insect net 21 to the frame 1 or the main body 2, and this device 20 is attached to a stopper holding body 2000 provided on the frame 1 or the main body 2 and a holding piece of the holding body 2000. It is comprised with the tightening body 2001 of the spring wire to be fitted. Then, the fastening body 2001 is attached by attaching the end of the insect-proof net 21 to the holding body 2000. The insect net 21 can be freely attached and detached. And in this invention, since it can also mount | wear with the structure (not shown) which attached the insect net in the omnidirectional of the house, it is useful.

  In the figure, reference numeral 23 denotes a hood provided on the frame 1 or the main body 2. Reference numeral 24 denotes a spiral rectifying means provided inward of the outlet 801a on the outlet side 801 of the inner peripheral surface 8a of the casing 8, and this rectifying means 24 is constituted by a plurality of plate members 2400, and this plate member 2400. Through the arrangement, the gap between the plate members 2400 is formed so that the inside is narrow and wide in the radial direction, and in combination with the wing body 15 or alone, the air blown from the fan 5 is rectified. Take the role of arranging.

FIG. 1 is a perspective view of a state in which the shutter is closed when viewed from the front. FIG. 2 is a perspective view of a state in which the shutter is opened and the shutter is in contact with the outer peripheral surface of the casing as viewed from the front. FIG. 3 is an enlarged perspective view of the main part showing the vertical part and the bent part of the operating projection penetrating the casing and showing the relationship with the two blade bodies (wind plates). FIG. 4 is an enlarged perspective view of the main part showing a state in which the operating protrusion shown in FIG. 3 is pressed by the wing body that is maximally movable. 5 is an exploded perspective view of the intake fan body. FIG. 6 is a plan view showing the relationship between the movable rod, the casing, and the means for returning the movable rod. FIG. 7-1 is a perspective view showing the relationship between the operation protrusion and the shutter and the means for returning the movable rod (return means). FIG. 7-2 is an enlarged plan view of the main part of FIG. FIG. 8 is a rear perspective view of the intake fan. Fig. 9 is a perspective view of a state where an insect repellent net is attached to the inside of the house of the intake fan FIGS. 10A to 10C are each conceptually shown from the plane, front, and bottom directions showing the closed state of the shutter. FIGS. 10-2 (a) to (c) are diagrams conceptually showing from the plane, front, and bottom directions that show the state in which the shutter starts moving in conjunction with the movement of the wing body. FIGS. 10-3 (a) to (c) are diagrams conceptually showing from the direction of the plane, front, and bottom showing the state in which the shutter is interlocked with the movement of the wing body and starts moving. FIGS. 10-4 (a) to (c) are diagrams conceptually showing from the plane, front, and bottom directions showing the opened state of the shutter. FIG. 11 is a perspective view showing a state where the hood is provided on the frame of the intake fan or the main body. 12 is a perspective view showing another example of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Main body 2a Opening 2b Bell mouth 3 Bracket 4 Motor 5 Fan 6 Guard 8 Casing 8a Inner peripheral surface 8b Outer peripheral surface 800 Width 801 Outlet side 801a Outlet 802 Inlet side 802a Inlet port 10 Shutter 1000 1100 Sheath tube 1001 Projection piece 10a Pivoting side 10b Tip side 11 Movable rod 11a Vertical portion 11b Other bent portion 11c One bent portion 12 Operating projection 12a Vertical portion 12b Operating portion 12b-1 Free end 12b-2 Vertical portion side 15 Wing body 15a Open Side 15a-1 Square end portion 15b Pivoting portion 1500 Notch portion 18 Spring 19 Spring 20 Device 2000 Holding body 2001 Fastening body 21 Insect net 23 Hood 24 Rectifying means 2400 Plate material

Claims (11)

In an intake fan with a fan and a fan motor in the intake fan body,
A casing is provided on the intake fan body, and at least two blades that are movable by blowing are pivotally supported on the suction side of the casing, and an operation projection that is operated by the two blades is provided on the casing. A pair of movable rods movable via protrusions are pivotally attached to the outer peripheral surface of the casing, and the pair of movable rods are movable to the pair of movable rods so that the blower side of the intake fan is connected to each other through a pair of shutters. A shutter structure for an intake fan, wherein the shutter and / or a return means including a spring, an elastic string, and an actuator for controlling the return of the movable rod are provided between the casing and the movable rod. In the intake fan provided with a fan and a motor for the fan in the intake fan main body according to claim 1,
A pair of operating projections that operate with the two blades are provided through the inner and outer peripheral surfaces of the casing, and one side of the pair of movable rods movable through the pair of operating projections, An intake fan shutter structure in which the vertical side of the pair of operating projections and the other side are pivotally attached to the outer peripheral surface of the casing. The shutter structure of the intake fan according to claim 1,
An intake fan shutter structure in which a spiral rectifying means is provided inward of the outlet on the outlet side of the casing. The shutter structure of the intake fan according to claim 1,
A tapered guide piece for sliding the outer peripheral surface of the casing is provided on the inner surface of the shutter, and the pivoting side of the shutter reaches the outer peripheral surface of the casing through the movement of the movable rod. Using the fact that the movable rod slides and moves on the outer peripheral surface, the pivoting side of the shutter moves with a slight distance to the outer peripheral surface, and at the time of this movement, the inner surface of the guide piece is moved to the outer peripheral surface. A shutter structure of an intake fan that is slid on the surface so that the casing can move smoothly. The intake fan shutter structure according to claim 4,
The shutter structure of the intake fan is configured such that the inner surface of the shutter is in contact with the outer peripheral surface of the casing in the open limit and can be accommodated compactly. The shutter structure of the intake fan according to claim 1,
A shutter structure of an intake fan in which a sheath tube is formed on the pivotally attached side of the shutter, and the sheath tube is loosely fitted to a U-shaped vertical portion of the movable rod. The shutter structure of the intake fan according to claim 1,
The return means includes, on one side of the pair of movable rods, a spring and an elastic cord on one side that are secured by passing, and a spring and an elastic cord on the other side secured on the other side of the pair of movable rods, A shutter structure of an intake fan that is configured to be fixed to a protruding piece of a shutter-supporting sheath tube that is loosely fitted to the movable rod. The shutter structure of the intake fan according to claim 1,
A shutter structure for an intake fan, wherein the operating protrusion is formed of a vertical portion and an operating portion extending from the vertical portion and bent at a substantially right angle. The shutter structure of the intake fan according to claim 1,
A shutter structure for an intake fan, wherein a notch portion is provided on one or the other side of the vane plate so as not to collide with the inner peripheral surface of the casing at a corner end portion on the open side. The shutter structure of the intake fan according to claim 1,
The structure is provided with a stopper holding body for an insect repellent net, which is provided on the suction side of the casing, and a stopper fastening body inserted into the holding body, through the holding body and the fastening body, Intake fan shutter structure with detachable insect net. The shutter structure of the intake fan according to claim 1,
A frame structure for mounting an intake fan, or a shutter structure for an intake fan, wherein a hood is provided on the main body to prevent rain, prevent wind, or protect the intake fan shutter.

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