JP6507821B2 - Ventilation damper - Google Patents

Description

  The present invention is attached to these walls and the like to control the degree of ventilation for indoor and outdoor ventilation of buildings such as business buildings, office buildings, apartment buildings, detached houses, warehouses, etc. The present invention relates to a ventilation damper that simultaneously cleans in air.

  Generally, in this type of ventilation damper, blades are rotatably disposed in a frame defining a passage, and rotation of the blades determines the degree of opening of the passage so as to control the degree of ventilation through the passage. .

JP, 2014-157012, A

  By the way, the ventilation damper described in Patent Document 1 having a blade rotatably disposed in the frame so as to open and close the passage can perform constant air flow control based on the wind speed of the passage, and moreover, the passage is subjected to strong wind or the like. Air can be drawn into and out of the room more than necessary from the room, which can eliminate the generation of an unpleasant air flow in the room and can also prevent the outdoor wind dust from being brought into the room by strong wind, and additionally Although it is possible to eliminate the disadvantage that the air in the room is ventilated more than necessary and the air conditioning effect is reduced, in addition to dust contained in the air outside the room, for example, outside, in constant air flow control based on the wind speed of the passage. Also, there is a possibility that the contaminants contaminating the air may be introduced into the room to contaminate the room air.

  Such a problem may occur even in a ventilation damper provided with blades that open and close the passage, without performing constant air flow control based on the wind speed of the passage.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is to prevent the introduction of pollutants contaminating air containing dust into the room and to keep only clean air indoors. Providing a ventilation damper that can be introduced into the

  A ventilation damper according to the present invention comprises a frame internally forming a passage having an inlet hole and an outlet hole, a vane means disposed in the frame to open and close the passage, and at least one of an inlet hole and an outlet hole. And an air cleaning mechanism for cleaning the air passing through the passage.

  According to such a ventilation damper, since the air cleaning mechanism for cleaning the air passing through the passage is provided, the introduction of the contaminant contaminating the air including dust into the room is prevented during natural ventilation. Thus, only clean air can be introduced into the room.

  In the preferred embodiment of the present invention, the air cleaning mechanism is provided in the outlet hole so as to clean the air flowing out of the passage from the outlet hole, but instead, the air cleaning mechanism is provided through the inlet hole It may be provided in the inlet hole to clean the air flowing into the passage.

  In the present invention, preferably, the air cleaning mechanism comprises at least an ionizer, and more preferably, the air cleaning mechanism comprises an ionizer disposed between the primary filter, the secondary filter, and the primary filter and the secondary filter. And.

  In the present invention, the ionizer may be either AC type or DC type, and contaminants in air charged by the ionizer are attached to the secondary filter and removed from the air.

  Preferably, the primary and secondary filters have eye widths that provide as little resistance as possible to the air flow in the passage.

  In the ventilation damper of the present invention, the blade means may simply have a blade for opening and closing the passage, and alternatively, the blade means is rotated based on the velocity of the passage and based on the velocity of the passage. In any case, the ventilation damper of the present invention further comprises means for manually or electrically forcing the blade means into the passage open position and the passage closed position. It may be done.

  According to the present invention, it is possible to provide a ventilation damper capable of preventing only the clean air from being introduced into the room by preventing the introduction of the pollutant contaminating the air into the room.

FIG. 1 is an explanatory view of a longitudinal cross section in an open passage state of an example of a preferred embodiment of the present invention. FIG. 2 is a front view of the example shown in FIG. FIG. 3 is an exploded perspective view of a part of the example shown in FIG. FIG. 4 is a vertical cross-sectional explanatory view in which the blade main body of the example shown in FIG. 1 is omitted. FIG. 5 is a vertical cross-sectional explanatory view omitting the blade main body and the side end member of the example shown in FIG. FIG. 6 is a front view of the rotation means of the example shown in FIG. 7 is a cross-sectional explanatory view taken along line VII-VII shown in FIG. FIG. 8 is a cross-sectional explanatory view taken along line VIII-VIII shown in FIG. FIG. 9 is an operation explanatory view of the rotation means shown in FIG. FIG. 10 is an operation explanatory view of the example shown in FIG. FIG. 11 is an operation explanatory view of the example shown in FIG. FIG. 12 is an explanatory view of another example of the preferred embodiment of the present invention.

  Next, an embodiment of the present invention will be described in more detail based on a preferred example shown in the drawings. The present invention is not limited to these examples.

  In FIGS. 1 to 9, the ventilation damper 1 of this example is formed by the frame 5 having the passage 4 having the inlet hole 2 and the outlet hole 3 formed therein and the rotation in the A and B directions about the rotation axis O. It is rotatably disposed in the frame 5 so as to open and close the passage 4 and has side end portions 7 (only one is shown) at both ends of the blade main body 6 and the blade main body 6 in the axial direction X An elastic seal member 11 having a seal curved surface 9 with which the blade means 8 and the seal curved surface 14 of the side end 7 of the blade means 8 contact and which is fixed to the side wall 10 of the frame 5 A rotating means 12 for forcibly rotating the blade means 8 to open and close the passage 4 and a rotational moment for rotating the blade means 8 toward the passage open position, that is, in the A direction are always applied to the blade means 8 Weight means 13 and outlet hole 3 The air passing through the passage 4 with are provided which comprises an air cleaning mechanism 15 for cleaning.

  The frame 5 integrally has, in addition to the side wall 10, the other side wall 20 facing the side wall 10 in the axial direction X, the front wall 21, and the rear wall 22. The elastic seal members 23 and 24 extending in the axial direction X are fitted to the respective rear wall portions 22 and 22, and the frame 5 is formed integrally with the side wall portions 10 and 20. And the mounting portion 25 is attached to a wall around an opening such as a window of a building through a bolt or the like, and the entrance hole 2 is provided outside the interior 26 of the building and the exit hole 3 is The entrance holes 2 may be provided with wire nets for bird protection, respectively.

  A seal member similar to the seal member 11 is also fixed to the other side wall portion 20 of the frame 5 opposed to the side wall portion 10 in the axial direction X.

  The blade means 8 comprises, in addition to the blade body 6 and the side end 7, a shaft member 31 fixed to the blade body 6 and the side end 7, the shaft member 31 via a slide bearing or the like. The side wall portion 10 is rotatably supported in the A and B directions. The blade means 8 also has a side end portion and a shaft member similar to the side end portion 7 and the shaft member 31 on the other side wall portion 20 side of the frame 5, and this shaft member is the other side wall portion 20. Is rotatably supported in the A and B directions. The relationship between the blade means 8 on the other side wall portion 20 side and the seal member fixed to the other side wall portion 20 is the same as that on the side wall portion 10 side, so the description will be omitted below.

  The integrally formed blade body 6 comprises a hollow cylindrical shaft 35 through which the rotation axis O passes, and a pair of hollow blades 36 and 37 integrally extended from the shaft 35 in the radial direction. The radial tips 38 and 39 of the vanes 36 and 37 have a rotational moment towards the passage closed position by the air flow 40 passing through the passage 4 from the inlet hole 2 to the outlet hole 3, ie in the B direction. It is curved so as to generate a rotational moment on the blade means 8.

  Each of the tip portions 38 and 39 is in contact with each of the seal members 23 and 24 when the blade means 8 is rotated in the B direction so as to elastically deform the seal members 23 and 24.

  One surface 41 of the tip portion 38 and the blade portion 36 in the vicinity thereof is curved to be a convex surface, and the other surface 42 is curved to be a concave surface complementary to the surface 41 , And similarly, one surface 43 of the blade portion 37 at the tip end portion 39 and its vicinity is curved to be a convex surface, and the other surface 44 is curved to be a concave surface complementary to the surface 43 doing. The curved shapes of the tip portions 38 and 39 and the blade portions 36 and 37 in the vicinity thereof cause air flow 40 in the passage 4 when the passage 4 is opened by the blade means 8 (the position shown in FIG. 1) Lift force toward the front wall portion 21 is generated in the blade portion 36, and lift force is generated in the blade portion 37 toward the rear wall portion 22, and the rotational moment based on this lift force causes the blade means 8 to move toward the passage closing position. It will be rotated.

  The side end 7 is a side end member 52 fixed to the end face of the blade main body 6 in the axial direction X by a screw 51 or the like, and a semicircular side end auxiliary fixed to the side end member 52 by a screw 51 or the like. And a member 53. The side end 7 may be integrally formed instead of the separate side end member 52 and the side end auxiliary member 53, or the shaft member 31 and the side end auxiliary member 53. And the shaft member 31, the side end member 52 and the side end auxiliary member 53 may be integrally formed, and in addition, the side end portion You may form with the blade | wing main-body part 6 integrally.

  The side end member 52 corresponds to a central portion 55 corresponding to the shaft portion 35, one blade side end portion 56 corresponding to the blade portion 36 and radially integrally extending from the central portion 55, and a blade portion 37. And the other blade side end 57 extending radially from the central portion 55 in a direction opposite to the blade side 56, and a large amount integrally formed on the center 55 and the blade side 56. And a seal curved surface 61 in contact with the seal curved surface 9 at the outer edge of the central portion 55, the blade side end 56 and the enlarged portion 58 facing the seal member 11, and the other blade side A seal curved surface 63 in contact with the other seal curved surface 62 of the seal member 11 is provided at the outer edge of the end portion 57 facing the seal member 11, and the seal curved surface 61 is in the A direction which is the opening rotational direction of the blade means 8. Ie the blade side relative to the central part 55 The distance D from the rotation axis O gradually increases from the position 64 at one root of the portion 57 to the position 65 where the blade end 56 and the enlarged portion 58 intersect, and the position 65 From the front end position 66 to the tip end position 66 of the blade side end portion 56 is formed to be flush with the surface 41 of the blade portion 36. The seal curved surface 63 is formed to be flush with the surface 43 of the blade 37 including the surface 43.

  The side end auxiliary member 53 as the side end auxiliary portion has a seal curved surface 71 contacting the seal curved surface 9 at the outer edge facing the seal member 11, and the seal curved surface 71 is an open rotation A of the blade means 8. In the rotational direction of the notch 74 described later from the position 72 corresponding to one root of the blade 37 with respect to the shaft 35 (corresponding to the other root position 73 of the blade end 57 with respect to the central portion 55) The distance R from the rotational axis O gradually increases until the position 75 at least exceeds the length, which is sufficiently in this example, and is made flush with the seal curved surface 61, From 75 to the end position 76, it is formed in a circular arc shape whose radius of curvature is the distance D from the rotation axis O at the position 75.

  Thus, in the present embodiment, the seal curved surface 14 is configured to include the seal curved surface 61 and the seal curved surface 71.

  The seal member 11 integrally formed includes a pair of seal pieces 81 and 82. The seal piece 81 having the seal curved surface 9 is added to the notch 74 in which the blade side end 57 extends. The protrusion 83 has an end face 78 with which the flat end face 77 of the side end auxiliary member 53 contacts, and a groove 84, and the seal curved surface 9 is terminated at one end by the end face 85 of the seal piece 81 The seal curved surface portion 86 extends along the protrusion 83 and the notch 74 and the other end is terminated by the groove 84, and the one end is terminated by the notch 74 and adjacent to the groove 84 in the groove 84 And a seal curved surface portion 87 extending along the same direction, and the seal curved surface portion 86 has a shape complementary to the seal curved surface 71 from the position 72 to the position 75 and is in contact with the seal curved surface 71 Has become a seal song Part 87 is adapted to contact the seal curved 61 with has a complementary shape to seal curved 61.

  Assuming that elastic deformation does not occur in the seal member 11 when the blade means 8 fully opens the passage 4, the distance D from the rotation axis O at each portion of the seal curved surface 71 from the position 72 to the position 75 is The distance D from the rotation axis O at each portion of the seal curved surface 61 from the position 64 to the position 75 is longer than the distance from the rotation axis O of the seal curved surface portion 86 at the corresponding position of the seal member 11 The seal curved surface 61 from the position 75 to the position 65 has a substantially flat surface, although the distance from the rotational axis O of the seal curved surface portion 87 at the corresponding position of the seal member 11 is longer. As a curved surface.

  The sealing curved surfaces 61 and 71 formed at the side end 7 contact the sealing curved portions 86 and 87 of the sealing member 11 in the rotation area of the blade means 8 from the closed rotational position to the passage 4 to the partially open rotational position In the rotation area of the blade means 8 from the partial open rotational position to the passage 4 to the full open rotational position, elastic deformation is caused to the seal member 11 (see the hatched portion in FIG. 11). It comes to be noncontacting from the seal curved surface parts 86 and 87 (see FIG. 1, FIG. 4 and FIG. 5).

  The rotating means 12 as means for bringing the blade means 8 into the passage open position and the passage closed position manually or electrically and forcibly generated by the rotational force generating means 92 having the output rotational shaft 91 and the rotational force generating means 92 And transmission means 93 for transmitting the rotational force in the R direction to the blade means 8 as rotational force in the A and B directions, and the rotation means 12 electrically forces the blade means 8 into the passage open position and It is intended to bring the aisle closed position.

  The rotational force generating means 92 is attached to a base 94 connected to one side wall portion 10 of the frame 5 and has a pulse motor 95 capable of rotating in the forward and reverse directions with an output rotation shaft 91, and an output of the pulse motor 95 The pulse motor 95 detects the rotation of the rotation shaft 91 in the R direction, and the amount of rotation of the pulse motor 95 in the rotation of the output rotation shaft 91 in the R direction is based on the detection signal from the detector 96. The drive is controlled to be determined.

  The transmission means 93 is connected to the output rotary shaft 91 of the rotational force generation means 92 via the connector 101, and is rotatably supported by the base 94 at both ends via the bearings 102 in the R direction. And a helical gear 107 rotatably supported on the base 94 via bearings 104 at both ends in directions A and B and having a helical gear 106 meshing with the worm tooth 105 of the worm shaft 103; One end of each of the disk-shaped rotatable member 108 fixed to the helical gear 107 and the pair of circular arc slits 109 and 110 formed in the rotatable member 108 is in the A and B directions of the blade means 8. The pins 111 and 112 engaged with play in the rotational direction and the other ends of the pins 111 and 112 are fixed and fixed to the shaft member 31 projecting outward from the side wall 10 A disc member 113 is provided, and rotation of the output rotary shaft 91 in the R direction is meshed with each other via worm teeth 105 of the worm shaft 103 and the helical gear 106 of the helical gear 107 in the A and B directions. The circular arc slits 109 and 110 are formed on the rotatable member 108 so as to be axially symmetrical, and the pins 111 and 112 are also axially symmetrically arranged on the disc member 113. It is set up.

  The rotating means 12 rotates the rotatable member 108 in the A and B directions through the worm shaft 103 and the helical gear 107 by the operation of the pulse motor 95, and the rotation of the rotatable member 108 in the A and B directions causes an arc. The blade means is adapted to rotate the disc member 113 in the A and B directions through cylindrical pins 111 and 112 engaged with the respective ends of the slits 109 and 110 respectively, thereby opening and closing the passage 4 8 is rotated in the A and B directions. When the blade means 8 is rotated to the passage open position (the position shown in FIG. 1) by the engagement between the arc slits 109 and 110 and the pins 111 and 112, the transmission means 93 moves toward the passage closed position. A free rotation of the means 8 is permitted.

  The weight means 13 is fixed to the shaft member 31 of the blade means 8 at one end and has an arm member 122 having a screw surface 121 and two weights 123 screwed to the screw surface 121 of the arm member 122. When the blade means 8 is disposed at the passage closed position, the shaft member 31 is rotated in the A direction by the load of the weight 123 to move the blade means 8 toward the passage open position in the A direction. The blade means 8 which is adapted to be rotated, and to which the rotational moment to be rotated in the A direction by the weight means 13 is always applied, is always biased to be rotated toward the passage open position. It is done.

  The position of the vane means 8 from the state where the vane means 8 closed the passage 4 (position shown in FIG. 11) to the state where the passage 4 is opened (position shown in FIG. 1), for example, the rotatable member 108 And the pulse motor 95 is controlled in its operation based on the detection signals from the present detector and the detector 96 to detect the blade means 8. The opening degree of the passage 4 due to is set to a predetermined value.

  The air cleaning mechanism 15 provided in the outlet hole 3 includes a primary filter 124 and a secondary filter 125 so as to clean the air flowing out of the passage 4 from the outlet hole 3 and flowing into the indoor portion 27. The ionizer 126 disposed between the primary filter 124 and the secondary filter 125 and the rails 129 fixed to the upper surfaces 127 and 128 of the front wall 21 and the rear wall 22 respectively slide in a direction C parallel to the axial direction X A hollow accommodating frame 130 which is freely fitted and which accommodates the primary filter 124 and the ionizer 126 therein, and an accommodating frame which is attached to the upper surface 141 of the accommodating frame 130 and which accommodates the secondary filter 125 therein. 142 and the like.

  The primary filter 124 attached to the housing frame 130 removes dust contained in the air flow 40 from the outlet hole 3 passing through the primary filter 124 from the air flow 40 so as to remove the dust. The ionizer 126 attached to the container frame 130 together with the primary filter 124 charges the contaminants in the air stream 40 that can not be removed by the primary filter 124 by corona discharge. The contaminants are removed from the air flow 40 in cooperation with the secondary filter 125, and the air flow 40 from which such contaminants have been removed is delivered to the inside of the room 27 through the secondary filter 125. The secondary filter 125 attached to the housing frame 130 is capable of removing dust in the air flow 40 that can not be removed by the primary filter 124. , So that it can remove contaminants, it has a finer mesh size of the eye than the primary filter 124.

  In the ventilation damper 1 described above, when the pulse motor 95 is operated and the output rotary shaft 91 is rotated forward at the fully open position of the passage 4 shown in FIG. 1, the rotatable member 108 is in the B direction as shown in FIG. And the shaft member 31 is similarly rotated in the B direction through the engagement of the arc slits 109 and 110 respectively with the pins 111 and 112 respectively, so that the blade means 8 is rotated in the same direction. Through the state shown in FIG. 10, the passage 4 is turned to the closed state as shown in FIG.

  In the ventilation damper 1, in rotation of the blade means 8 in the B direction from the fully open position to the fully closed position of the passage 4, until the blade means 8 is rotated about a 35 ° angle in the B direction from the fully open position of the passage 4, A gap is maintained between each of the seal curved surface 71 and the seal curved surface portion 86 and between the seal curved surface 61 and the seal curved surface portion 87, and when the blade means 8 starts to be rotated further in the B direction by about 35 ° or more. After the seal curved surface 71 begins to contact the seal curved surface 86 gradually from its leading end and the seal curved surface 71 contacts the seal curved surface 86 beyond the angular range in which the notch 74 is disposed, such contact is maintained Then, the seal curved surface 61 starts to contact the seal curved surface 87 gradually from its leading end, and finally, when the blade means 8 is rotated by an angle of about 45 °, the seal curved surface 71 contacts the seal curved surface 86 To In addition, as shown in FIG. 11, all of the seal curved surface 61 contacts the seal curved surface portion 87 and all of the seal curved surface 63 contacts the seal curved surface 62, and furthermore, the seal curved surface 71, the seal curved surface 61 and the seal curved surface 63 seal The member 11 is elastically deformed at portions of the seal curved surface portion 86, the seal curved surface portion 87, and the seal curved surface 62, and these contacts are made to be in close contact.

  In the fully closed position of the passage 4, the tip portions 38 and 39 of the blade means 8 respectively contact the seal members 23 and 24, respectively, to elastically deform the seal members 23 and 24 and flatten the side end auxiliary member 53. The end face 77 is in close contact with the end face 78 to elastically deform the end face 78. In the above state, the air flow through the passage 4 is blocked by the blade means 8.

  When the pulse motor 95 is operated and the output rotary shaft 91 is reversely rotated from the rotation state of the blade means 8 shown in FIG. 11, the rotatable member 108 is in the A direction as shown in FIG. As the shaft member 31 is similarly rotated in the A direction through the engagement between the arc slits 109 and 110 and the pins 111 and 112, respectively, the blade means 8 is rotated in the same direction. Through the state shown in FIG. 10, it is rotated to open the passage 4 as shown in FIG. In this state, the air in the chamber exterior 26 and the indoor chamber 27 is circulated through the passage 4.

  In rotation of the blade means 8 in the A direction from the fully closed position of the passage 4 to the fully open position, the ventilation damper 1 until the blade means 8 is rotated about an angle 10 ° in the A direction from the fully closed position of the passage 4 Since the seal curved surface 14 is in contact with the seal curved surface 9, the blade means 8 is forcibly rotated in the A direction by the pulse motor 95 and thereafter, the contact of the seal curved surface 14 with the seal curved surface 9 is released. If gaps are generated between the curved surface 71 and the seal curved surface portion 86 and between the seal curved surface 61 and the seal curved surface portion 87, rotation of the disc member 113 in the A direction is not blocked by the arc slits 109 and 110, The rotational force in the A direction is applied to the shaft member 31 by the weight means 13, and the blade means 8 is rotated in the A direction and is rotated to open the passage 4 as shown in FIG.

  Further, in the ventilation damper 1, between the seal curved surface 71 and the seal curved surface 86 and between the seal curved surface 61 and the seal curved surface 87 at the rotational position of the blade means 8 at an angle of about 35 ° in the B direction from the fully open position of the passage 4. A clearance is formed in each of the two, and only the rotational force in the A direction is applied to the blade means 8 by the weight means 13, so that the B direction of the disc member 113 by the circular arc slits 109 and 110. Constant air flow control based on the wind speed of the passage 4 can be performed, so that a large pressure difference occurs between the outside 26 and the inside 27 of the room to cause an air flow in the When an air flow 40 of sec or more is generated, a rotational moment in the B direction is generated in the blade means 8, whereby the blade means 8 is rotated in the direction toward the passage closing position, passing by strong wind or the like. It is possible to prevent air flow from being drawn into and out of the indoor unit 27 more than necessary through 4 and to prevent an unpleasant air flow from being generated in the indoor unit 27 and to bring dust from the outside 26 into the indoor unit 27. It is possible to eliminate such a disadvantage that the air in the indoor portion 27 is ventilated more than necessary to reduce the air conditioning effect, and it is possible to prevent an increase in the air conditioning power to compensate for this.

  Furthermore, in the ventilation damper 1, the distance D from the rotation axis O of the seal curved surface 14 of the blade means 8 gradually increases in the A direction which is the open rotation of the blade means 8, and the seal curved surface 9 of the seal member 11 Due to the complementary shape of the blade means 8 with the sealing curve 14, the sealing curve 14 gradually approaches the seal curve 9 in the closing direction of the passage 4 of the blade means 8 and finally In addition to being able to completely close off the passage 4 at the side end 7 of the blade means 8 in order to come into contact, it is also possible to make the blade means 8 rotate very lightly before contact. As a result, generation of noise and the like can be minimized, and energy saving can be achieved when the blade means 8 rotates.

  In the ventilation damper 1, even if the thermal expansion of the wing means 8 or the frame 5 or their slight deformation or displacement, the rotation of the wing means 8 for opening and closing the passage 4 can be performed smoothly and noise etc. occur. There is no fear.

  In addition, in the ventilation damper 1, the seal curved surfaces 61 and 71 formed on the side end 7 of the blade means 8 at the end of the rotation of the blade means 8 in the closing direction of the passage 4 To close the passage 4 at the side end 7 of the blade means 8 more completely, and from the partially open rotational position to the fully open rotational position. Since the seal curved surface 14 of the blade means 8 and the seal curved surface 9 of the seal member 11 are not in contact with each other in the rotation region of the above, the rotational force of the blade means 8 can be reduced and energy saving can be achieved. This rotation area can be a constant air volume rotation area.

  Moreover, in the ventilation damper 1, the passage 4 is provided to bring the seal curved surface 14 of the blade means 8 and the seal curved surface 9 of the seal member 11 into contact with each other in the rotation region of the blade means 8 from the closed rotation position to the partial open rotation position. And the passage 4 can be more completely closed in order to cause elastic deformation of the seal member 11 from the closed rotation position to the partially open rotation position. Since the seal curved surface 14 of 8 is also provided on the outer edge of the side end auxiliary member 53, the seal curved surface 14 of the blade means 8 and the seal member 11 of the blade means 8 also at the portion of the notch 74 where the blade side end 57 extends. Since the seal curved surface 9 can be brought into contact with each other, the gap around the blade end 57 can be eliminated in the closing of the passage 4 to achieve a more complete closing of the passage 4 That.

  Further, in the ventilation damper 1, the blade means 8 can be forcibly rotated by the rotation means 12, and when the blade means 8 is rotated to the passage open position, free rotation of the blade means 8 toward the passage closed position is performed. Since it is possible to rotate the blade means 8 according to the wind pressure of the passage 4 at the passage open position because it is allowed, the forced opening and closing of the passage 4 can be performed, and constant air flow control based on the wind speed of the passage 4 In order for the weight means 13 to apply a rotational moment to the blade means 8 toward the passage open position, the number of weights 123 of the weight means 13 and the screw of the weight 123 at the arm member 122 By appropriately setting the joint position, it is possible to correspond to the weight change of the blade means 8 based on the manufacturing error, to be able to reliably arrange the blade means 8 in the passage open position, and to block the natural passage 4 utilizing the air flow. That is, constant air flow control It can be reliably performed.

  Further, in the ventilation damper 1, a worm shaft 103 connected to the output rotary shaft 91 of the rotational force generating means 92, and a helical gear 107 having a helical gear 106 meshing with the worm tooth 105 of the worm shaft 103. Transmission means 93 for transmitting the rotation of the output rotary shaft 91 to the shaft member 31 of the blade means 8 via the worm shaft 103 and the helical gear 107 meshing with each other. The transmission of rotation from the shaft to the output rotary shaft 91 can be prevented by meshing between the worm shaft 103 and the worm teeth 105 of the helical gear 107 and the helical gear 106, so that the blade means 8 is closed by strong wind when the passage 4 is closed. Even if a large wind pressure is applied, the blade means 8 can be maintained in the closed state of the passage 4 and the passage 4 can be completely closed.

  Further, according to the ventilation damper 1, the rotational force generation means 92 includes the pulse motor 95, and the pulse amount is determined so that the rotation amount of the output rotary shaft 91 of the pulse motor 95 is determined based on the detection signal from the detector 96. Since the motor 95 is driven and controlled, the output rotary shaft 91 of the pulse motor 95 can be accurately rotated, and thus the blade means 8 can be accurately rotated. In addition, damage to the seal member 11 and the like provided on the frame 5 can be avoided, and intended natural ventilation can be performed.

  Moreover, in the ventilation damper 1, the air cleaning mechanism 15 provided in the outlet hole 3 and for cleaning the air of the air flow 40 passing through the passage 4 is in control of constant air flow based on the wind speed of the passage 4. Even during natural ventilation, only clean air can be introduced into the room by preventing the introduction of contaminants contaminating air containing dust into the room 27, and the storage frame 130 is provided with the rails 129. Since the air cleaning mechanism 15 can be easily removed from the frame 5 because it is slidably fitted in the direction C, the primary filter 124 and the secondary filter 125 can be easily replaced.

  The ventilation damper 1 electrically rotates the blade means 8 and inclines the passage 4 and opens the inlet hole 2 and the outlet hole 3 in the horizontal and vertical directions, respectively, but the present invention is limited thereto. Alternatively, for example, the blade means 8 may be rotated manually, the passage 4 may be extended horizontally, and the outlet hole 3 may be opened horizontally.

  Further, in the above example, the closed circular arc slits 109 and 110 are engaged with the pins 111 and 112 respectively, and the disc member 113 is rotated, but instead, as shown in FIG. The openable arc slits (arc notches) 131 and 132 are formed in the rotatable member 108, and the circular arc slits 131 and 132 are engaged with the pins 111 and 112, respectively. You may make it rotate.

  Furthermore, in the ventilation damper 1, in order to perform constant air flow control, the rotatable member 108 provided with the arc slits 109 and 110 or 131 and 132 and the pins 111 and 112 engaged with the arc slits 109 and 110 or 131 and 132, etc. If the constant air flow control is not performed, the helical gear 107 may be directly connected to the shaft member 31.

Reference Signs List 1 ventilation damper 2 inlet hole 3 outlet hole 4 passage 5 frame 6 blade main body 7 side end 8 blade means 9 seal curved surface 10 side wall portion 11 seal member 12 rotation means 13 weight means 15 air cleaning mechanism 124 primary filter 125 secondary Filter 126 Ionizer

Claims (2)

A frame having a passage formed therein having an inlet hole and an outlet hole, a vane means disposed in the frame so as to open and close the passage, and at least one of an inlet hole and an outlet hole And an air cleaning mechanism for cleaning the air passing through the air outlet, the air cleaning mechanism being provided at the outlet hole so as to clean the air flowing out of the passage from the outlet hole; A first-order filter, a second-order filter having a finer mesh width than that of the first-order filter, an ionizer disposed between the first-order filter and the second-order filter, and a rail fixed to a frame First housing frame fitted with the first filter and the ionizer inside, and attached to the first housing frame with the second filter housed inside Ventilation dampers; and a second housing frame. A ventilation damper according to claim 1, further comprising means for forcing the wing means into the passage open position and the passage closed position.

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