JP2013181696A - Air flow adjusting damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air flow adjusting damper remarkably easy for the maintenance of a wind velocity sensor.SOLUTION: An air flow adjusting damper 100 includes a cylindrical casing 11 arranged en route to an air conditioning duct, a wind velocity sensor 12 detecting wind velocity of air conditioning air flowing in the casing 11 and a blade 13 controlling the flow rate of the air conditioning air by opening or closing a flow passage in the casing 11 on the basis of the wind velocity data detected by the wind velocity sensor 12 and is further provided with an inspection door 13 provided in the casing 11 to be opened, a circumferential wall 14 projected around the inspection door 13, a heat insulating lid body 15 closing the inspection door 13 and a lambdoid shaped sensor frame 16 in the front view which is provided to be extended toward the inside of the casing 11 from an inner surface of the lid body 15 for holding the wind velocity sensor 12 in the vicinity of the axis center 11c in the casing 11, wherein a plurality of levers 17 which is a locking means for freely detachably locking the lid body 15 to the circumferential wall 14 are attached to the circumferential wall 14 respectively through a supporting member 37 and a spindle 17a.

Description

  The present invention relates to an air volume adjusting damper installed in the course of an air conditioning duct in an air conditioning facility in order to control the air volume of conditioned air in accordance with indoor temperature conditions.

  As a conventional air volume adjusting damper related to the present invention, for example, there is one shown in FIG. As shown in FIG. 9, the air volume adjustment damper 60 includes a cylindrical casing 61 connected in the middle of a route of an air conditioning duct (not shown) disposed in the ceiling space of the building, and conditioned air flowing in the casing 61. A wind speed sensor 62 for detecting the wind speed of the air and a blade 63 for adjusting the flow rate of the conditioned air by opening and closing the flow path in the casing 61 based on the wind speed data detected by the wind speed sensor 62. A part of the casing 61 is provided with an inspection port 67 closed by a lid 62 that can be opened and closed. The wind speed sensor 62 is held so as to be positioned near the axial center of the casing 61 by a sensor frame 65 erected on the inner surface of the lid 62.

  Since the wind speed sensor 62 is exposed to the conditioned air flowing in the casing 61 during the operation of the air volume adjusting damper 60, dust in the air is present on the wind speed sensor 62 in the OA system and the RA system having a relatively large dust content. It is recommended that the wind speed sensor 62 be regularly maintained. Maintenance in the conventional air volume adjusting damper 60 is performed by loosening a plurality of screws 66 and opening the lid 64, and passing the wind speed sensor 62 fixed to the inner surface of the lid 64 via the sensor frame 65 via the inspection port 67. This is done by taking it out of the casing 61.

  On the other hand, as a prior art related to the present invention, there is, for example, a “variable air volume unit” described in Patent Document 1 or a “duct measurement port structure” described in Patent Document 2.

JP 2011-52931 A Japanese Utility Model Publication No. 62-134028

  In the air volume adjusting damper 60 shown in FIG. 9, the outer periphery of the casing 61 is covered with a heat insulating material (not shown) together with the outer periphery of the air conditioning duct, and at this time, the lid body 64 that closes the inspection port 67 is also a heat insulating material. Covered. For this reason, when the maintenance of the wind speed sensor 62 is performed, the position of the inspection port must first be specified. However, since the air volume adjustment damper is covered with the heat insulating material, the specification is difficult. If the position can be specified, the inspection opening cannot be opened unless the heat insulating material around the lid 64 and the inspection opening 67 is deleted. Furthermore, after the maintenance is completed, it is necessary to repair the heat insulating material around the lid 64 and the inspection port 67, and it takes a lot of labor to perform these operations in the ceiling space.

  In addition, when a plurality of screws 66 are loosely tightened when the lid 64 of the air volume adjusting damper 60 is opened and closed, a tool such as a screwdriver is required. It takes time. Further, the screw 64 may be accidentally dropped during the loose tightening operation or the like and lost.

  Such a problem cannot be solved even by using the prior arts described in Patent Documents 1 and 2.

  The problem to be solved by the present invention is to provide an air volume adjustment damper in which maintenance of the wind speed sensor is extremely easy.

An air volume adjusting damper according to the present invention is an air volume adjusting damper that is disposed in the middle of a path of an air conditioning duct and adjusts the flow rate of the air conditioning air in the air conditioning duct. A wind speed sensor that detects air flow, a blade that opens and closes a flow path in the casing to adjust the flow rate of conditioned air, and a control device that drives the blade based on wind speed data detected by the wind speed sensor,
An inspection port established in the casing, a peripheral wall projecting around the inspection port, a lid for closing the inspection port, and the lid for holding the wind speed sensor at a predetermined position in the casing A sensor frame provided on the back surface of the sensor and a locking means for detachably locking the lid to the inspection port are provided.

  Here, “the locking means for detachably locking the lid body to the inspection port” means that the lid body can be attached to and detached from the inspection port only by manual operation without using a tool or a screw. The locking means which has a function which can be performed.

  With such a configuration, it is possible to manually attach and remove the lid to the inspection port by manually operating the locking means, so that no tools are required and there is no risk of losing screws. Becomes easy. In addition, even after the insulation material is applied to the outer periphery of the casing, the peripheral wall of the inspection port protrudes from the heat insulation material, so the position of the inspection port can be easily identified, and the workability during maintenance is improved. . Therefore, the maintenance of the wind speed sensor becomes extremely easy. If the lid has a heat insulating structure, it is not necessary to cover the outer surface of the lid with a heat insulating material, so that it is not necessary to delete or repair the heat insulating material around the inspection port during maintenance. .

  Here, it is desirable that the mounting position of the wind speed sensor with respect to the sensor frame can be changed along the transverse direction of the casing.

  With such a configuration, when the wind speed sensor is mounted on a plurality of types of casings having different sizes, the wind speed sensor is adjusted by adjusting the mounting position of the wind speed sensor with respect to the sensor frame according to the size. Since it can be held near the heart, the wind speed sensor, the sensor frame, and the lid can be shared in an integrated state. Although it is desirable to hold the wind speed sensor near the axial center of the casing, it is also effective when it is desired to hold the wind speed sensor at a position displaced from the axial center in accordance with the flow state of the conditioned air in the casing.

  In addition, it is desirable to provide a display unit indicating an appropriate mounting direction of the wind speed sensor with respect to the casing on the outer surface of the lid.

  With such a configuration, when the lid is attached to the casing after the maintenance is completed or the wind speed sensor is replaced, an error in the attachment direction can be prevented.

  Further, as the locking means, a lever that rotates about a support shaft and presses the lid body in a detachable manner can be provided on the peripheral wall of the inspection port.

  With this configuration, the lid can be locked and released from the inspection port simply by manually rotating the lever, eliminating the need for tools such as a screwdriver and further improving the engagement / disengagement work. To do.

  According to the present invention, it is possible to provide an air volume adjustment damper in which maintenance of a wind speed sensor is extremely easy.

It is a side view which shows the air volume adjustment damper which is embodiment of this invention. FIG. 2 is a partially omitted cross-sectional view in the vicinity of the line AA in FIG. 1. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 4 is a partially omitted cross-sectional view in the vicinity of line BB in FIG. 3. It is a partially-omission front view which shows the air volume adjustment damper which is other embodiment. FIG. 6 is a partially omitted perspective view of a sensor frame constituting the air volume adjustment damper shown in FIG. 5. It is a partially-omission front view which shows the air volume adjustment damper which is other embodiment. It is a partially-omission front view which shows the air volume adjustment damper which is other embodiment. It is a partially-omission perspective view which shows the conventional air volume adjustment damper.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 4, the air volume adjustment damper 100 of the present embodiment is arranged in the middle of the path of an air conditioning duct (not shown), and adjusts the flow rate of the conditioned air in the air conditioning duct. The casing 11, the wind speed sensor 12 that detects the wind speed of the conditioned air flowing in the casing 11, the blade 23 that opens and closes the flow path in the casing 11 to adjust the flow rate of the conditioned air, and the wind speed sensor 12 detect And a control device 10 that opens and closes the blades 23 based on the wind speed data.

  A short rectangular tube-shaped peripheral wall 14 is provided around the inspection port 13 opened on the side of the casing 11, and a heat insulating cover 15 that closes the inspection port 13 covers the upper edge portion 14 a of the peripheral wall 14. It is detachably locked in a covered state. Further, in order to hold the wind speed sensor 12 at a predetermined position in the casing 11 (near the axial center of the casing 11), a sensor frame 16 having a substantially “human” shape in front view from the inner surface of the lid 15 toward the casing 11. A plurality of levers 17 serving as locking means for detachably locking the lid 15 to the upper edge portion 14a of the peripheral wall 14 are respectively provided via a support member 37 and a support shaft 17a having an L-shaped cross section. Attached to the peripheral wall 14. As shown in FIGS. 3 and 4, the upper edge portion 14 a of the short rectangular tube-shaped peripheral wall 14 has a frame shape that is bent in an inverted L shape toward the axial center of the peripheral wall 14. A heat insulating material 21 is attached to the outer peripheral surface in advance.

  In the present embodiment, the lid body 15 having heat insulation has a structure in which a heat insulating material 15c is fitted in a concave portion of a shallow square box-shaped main body portion 15 formed of a metal plate, but is not limited thereto. Absent. The outer peripheral surface of the air-conditioning duct (not shown) and the outer peripheral surface of the casing 11 are covered with the heat insulating material 18 (see FIG. 2) at the time of duct heat insulation, but the peripheral wall 14 of the control device 10 and the inspection port 13 is the heat insulating material. It is kept exposed without being coated with. In addition, since a packing (not shown) is attached to the inner surface of the lid 15 (the surface facing the inspection port 13), when the inspection port 13 is closed with the lid 15, the top of the lid 15 and the peripheral wall 14. The packing (not shown) is sandwiched between the edge portion 14a.

  As shown in FIGS. 3 and 4, the pair of support members 37 are disposed on opposite sides of the peripheral wall 14 having a short rectangular tube shape, and the stopper 22 is provided on one of the other sides where the support member 37 is not disposed. ing. The support member 37 and the stopper 22 protrude from the outer periphery of the peripheral wall 14 in an upright manner, and when the lid 15 is attached to the inspection port 13, the outer periphery of the lid 15 is brought into contact with the inside of the support member 37 and the stopper 22. Thus, accurate positioning of the lid 15 with respect to the inspection port 13 can be performed. In addition, since the number and position of the support member 37 and the stopper 22 are not limited, it can be set according to use conditions.

  Further, as shown in FIG. 1, a display unit 30 indicated by an arrow 30 a indicating an airflow direction 20 flowing in the casing 11 is provided on a part of the outer surface 10 b of the control device 10. A display unit 19 is provided which indicates an appropriate mounting direction of the wind speed sensor 12 with respect to the casing 11 by an arrow 19a. As shown in FIG. 2, the control device 10 is in a state where its outer surface is exposed without being covered with a heat insulating material. 19 and 30 can be visually recognized.

  The wind speed sensor 12 needs to be set with its sensing unit facing upstream, but the direction of the arrow 19a displayed on the display unit 19 of the lid 15 is the same as the arrow 30a of the display unit 30 of the control device 10. If the lid 15 is attached so as to be in the same direction, the wind speed sensor 12 is set in the proper attachment direction. The plurality of levers 17 serving as the locking means for the lid body 15 press the outer surface 15a of the lid body 15 in a detachable manner by rotating around the support shaft 17a.

  On the other hand, a sensor code 24 for transmitting wind speed data detected by the wind speed sensor 12 is extended from the outer surface 15a of the lid 15 toward the control device 10, and the control device 10 is connected via a connector 24a at the tip of the sensor code 24. Is detachably connected to a connector 10a provided on the outer surface of the connector. Similar to the control device 10 described above, the connector 24a is not covered with the heat insulating material, so that the attaching / detaching operation to the connector 10a is easy.

  In the air volume adjusting damper 100, the lid 15 can be attached to and detached from the peripheral wall 14 projecting around the inspection port 13 by manually rotating a plurality of levers 17, so that a driver, a spanner, etc. No tools are required, there is no risk of losing screws, and workability during maintenance is good.

  The lid 15 is mounted in a state of covering the upper edge portion 14a of the peripheral wall 14 protruding from the outer peripheral surface of the casing 11 by the thickness of the heat insulating material 18, and the lid 15 itself has heat insulation. When the heat insulating material 18 is applied to the outer peripheral surface of the casing 18, the inspection portion such as the lid 15 can be exposed from the heat insulating material 18. For this reason, even after construction of the heat insulating material 18, the position of the inspection port 13 can be easily specified from the outside, and the maintainability is improved. Further, since the lid 15 has a heat insulating property, it is not necessary to cover the outer surface 15a of the lid 15 with the heat insulating material 18, so that the heat insulating material around the inspection port 13 can be deleted or repaired during maintenance. Work is also unnecessary. Therefore, maintenance and replacement of the wind speed sensor 12 in the air volume adjusting damper 100 is extremely easy.

  Note that the locking means for detachably locking the lid 15 to the inspection port 13 is not limited to the lever 17, so an adsorbing tool such as a magnet or a detachable male / female fitting mechanism can also be employed. Further, as described above, the lid body 15 has a structure in which the heat insulating material 15c is fitted in the recess of the shallow square box-shaped main body portion 15b. However, the present invention is not limited to this, so the entire lid body is thermally insulated. It can be formed of a material or other heat insulating structure can be adopted.

  Next, the air volume adjustment dampers 200, 300, and 400, which are other embodiments, will be described with reference to FIGS. In the air volume adjusting dampers 200, 300, and 400, portions common to the air volume adjusting damper 100 shown in FIGS. 1 and 2 are denoted by the same reference numerals in FIGS.

  In the air volume adjusting damper 200 shown in FIG. 5, a sensor frame 26 shown in FIG. 6 is used instead of the sensor frame 16 constituting the air volume adjusting damper 100 shown in FIGS. As shown in FIG. 6, the sensor frame 26 includes the wind speed sensor 12 sandwiched between the front ends 27 a of a pair of frame members 27 that are opposed to each other so that the shape in front view forms a substantially “human” shape. The frame member 27 is fixed at 28. In a region where the pair of frame members 27 face each other in parallel, a plurality of screw holes 29 are formed at intervals along the longitudinal direction.

  When the wind speed sensor 12 is attached to the sensor frame 26, the attachment position of the wind speed sensor 12 with respect to the sensor frame 26 can be changed in the arrow X and Y directions by selecting one of the plurality of screw holes 29. That is, when the wind speed sensor 12 is attached to the sensor frame 26, by selecting one of the plurality of screw holes 29, the attachment position of the wind speed sensor 12 with respect to the sensor frame 26 is set in the transverse direction of the casing 201 as shown in FIG. It can be changed along 201b.

  Accordingly, as shown in FIG. 7, when the wind speed sensor 12 is mounted on the air volume adjustment damper 300 having the casing 301 whose inner diameter is smaller than the casing 201 of the air volume adjustment damper 200 shown in FIG. 5, as shown in FIG. By attaching the sensor 12 to a position close to the arrow Y direction, the wind speed sensor 12 can be set at an appropriate position near the axis 301c of the casing 301.

  On the other hand, as shown in FIG. 8, when the wind speed sensor 12 is mounted on the air volume adjustment damper 400 having the casing 401 having a larger inner diameter than the casing 201 of the air volume adjustment damper 200 shown in FIG. By attaching the sensor 12 to a position close to the arrow X direction, the wind speed sensor 12 can be set at an appropriate position near the axis 401c of the casing 401.

  As described above, when the wind speed sensor 12 is mounted on the casings 201, 301, 401 having the casings 201, 301, 401 having different inner diameters, the wind speed with respect to the sensor frame 26 is applied to each casing 201, 301, 401 according to the inner diameter. By adjusting the mounting position of the sensor 12, the wind speed sensor 12 can be held in the vicinity of the axial centers 201c, 301c, 401c of the casings 201, 301, 401, so that the wind speed sensor 12, the sensor frame 26, and Sharing can be achieved with the lid and the like integrated.

  In addition, embodiment mentioned above shows an example of this invention, and the air volume adjustment damper of this invention is not limited to these embodiment.

  The air volume adjusting damper of the present invention can be widely used in the field of the construction industry as a material constituting air conditioning equipment such as office buildings and factory buildings.

DESCRIPTION OF SYMBOLS 10 Control apparatus 10a, 24a Connector 10b, 15a Outer surface 11,201,301,401 Casing 11b, 201b Transverse direction 11c, 201c, 301c, 401c Axis 12 Wind speed sensor 13 Inspection port 14 Perimeter wall 14a Upper edge 15 Cover 15b Main body Part 15c Heat insulating material 16, 26 Sensor frame 17 Lever 17a Support shaft 18, 21 Heat insulating material 19, 30 Display part 19a, 30a Arrow 20 Air flow direction 22 Stopper 23 Blade 24 Sensor code 27 Frame member 27a Tip part 28 Screw 29 Screw hole 37 Support member 100, 200, 300, 400 Air volume adjustment damper

Claims (4)

An air volume adjustment damper that is arranged in the middle of the air conditioning duct and adjusts the flow rate of the conditioned air in the air conditioning duct, a cylindrical casing, a wind speed sensor that detects the wind speed of the conditioned air flowing in the casing, A blade that opens and closes a flow path in the casing to adjust the flow rate of the conditioned air, and a control device that drives the blade to open and close based on wind speed data detected by the wind speed sensor,
An inspection port established in the casing, a peripheral wall projecting around the inspection port, a lid for closing the inspection port, and the lid for holding the wind speed sensor at a predetermined position in the casing An air volume adjusting damper, comprising: a sensor frame provided on the back surface of the air bag; and a locking means for detachably locking the lid to the inspection port.   The air volume adjusting damper according to claim 1, wherein an attachment position of the wind speed sensor with respect to the sensor frame can be changed along a transverse direction of the casing.   The air volume adjusting damper according to claim 1, wherein a display portion indicating an appropriate mounting direction of the wind speed sensor with respect to the casing is provided on an outer surface of the lid.   The air volume adjusting damper according to any one of claims 1 to 3, wherein a lever that rotates about a support shaft and presses the lid body in a detachable manner is provided on the peripheral wall of the inspection port as the locking means.

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