JP4833048B2 - Blower terminal device - Google Patents

Description

  The present invention relates to a blower terminal device with variable air volume that supplies cooled and heated processed air or ventilation air to a room through a duct.

  There is a blower terminal device that is also referred to as a VAV damper device that mixes processing air cooled and heated by an air conditioner or ventilation air from a ventilator, or independently supplies the air into a room through a duct. This type of device has a substantially hexahedron box open on one side (mostly the lower side) as a blowout port, and a duct connection port that is connected to a duct that feeds processing air provided on one side of this box, and the air volume is variable. A damper is provided at the duct connection port or box. For example, see Patent Documents 1 and 2.

JP-A-2-133723 Japanese Patent Laid-Open No. 5-126395

  In such an air blower terminal device, a heat insulating foam material is provided on the outer surface of a sheet metal box and has a heat insulating function against cold and hot air to prevent condensation. In some cases, a plurality of connection ports having different opening directions are provided in the box, a duct connection port is attached to a connection port suitable for the installation location, and the other connection ports are closed by a closing plate. In order to provide such a blower terminal device having a plurality of connection ports with airtightness and heat insulation function, for example, methods as shown in FIGS. That is, the heat insulating foam material 32 having a round hole corresponding to the connection port 31 of the box 30 is attached to each surface of the box 30, and the heat insulation foam material 32 that fits into the connection port 31 is used as a sheet metal for the connection port 31 that is not used. The affixed closing plate 33 is screwed from the inside of the box 30 and is closed. A duct connection port 34 is attached to the open connection port 31 by screwing, and a heat insulating material 35 is packed in the screwed portion and a portion where the heat insulating foam material is cut off for screwing, and the overall airtightness, Thermal insulation is maintained.

  Such a blower terminal device requires troublesome assembly work such as pasting and stuffing a number of heat-insulating foam materials 32, so that workability is poor and cost is high. And, when changing the mounting direction of the duct connection port 34, it is often handled on site, and it takes time and troubles such as replacement of the closing plate 33 and refilling of the packed heat insulating material 35, and the workability is poor. There is.

  The present invention has been made in order to solve the above-described problems, and the problem is that the air blower terminal device having both airtightness and heat insulation, as well as improvement in airtightness and heat insulation, as well as its assembly work. It is to improve the workability.

  In order to solve the above-described problems, the present invention provides a blower terminal device that includes a duct connection port that is connected to a duct that sends processing air and blows processing air into a room that includes a damper that varies the air volume. A substantially hexahedron sheet metal box opened as a substantially hexahedron outer casing made of an integrally molded heat insulating foam material that encloses the outer surface excluding one surface of the box. A knock-out connection port that can connect the duct connection port is provided on the surface, and the outer surface of the jacket box is provided with a required opening structure corresponding to the hole edge of each connection port of the box body, and one required element A means for opening the opening structure and opening the corresponding box connection port to connect the duct connection port is adopted.

  According to the present invention, it is not necessary to attach a closing plate to a connection port that is not used, and the duct connection port can be changed by changing the mounting direction of the duct connection port by opening the connection port and the required opening structure on site. It can be handled with a simple task of mounting.

  The blower terminal device of the present invention is attached to a ceiling space, a wall, or under the floor of a building, and supplies processing air and ventilation air from the air conditioning ventilation system or the like to the room through a duct. This apparatus is attached to a substantially hexahedron sheet metal box having a duct connection port provided with a damper for changing an air volume connected to a duct for supplying processing air, the lower surface of which is opened as an air outlet. The outer surface excluding the lower surface of the box is wrapped in a substantially hexahedron outer casing made of an integrally molded product of heat insulating foam material such as polystyrene foam. The box is provided with a knock-out connection port that can connect the duct connection port to the plurality of surfaces. The outer surface of the outer casing box is provided with a required opening structure with an outer shape-shaped groove corresponding to the hole edge of each connection port of the box body. A box connection port corresponding to the required opening structure is opened by knockout, and a duct connection port is fixed to the box through a heat insulating foam material from the outside by screws. A blow grill is attached to an open portion of the lower surface of the box, and processing air and ventilation air are blown into the blower terminal device through the duct, and are supplied to the room through the blow grill.

  This air blower terminal device has both airtightness and high heat insulation, and it is not necessary to screw the closing plate with heat insulating foam material pasted on the connection port that is not used in the construction, and it is not necessary to close the duct connection port installation direction. The change can also be dealt with by simply opening the connection port and the required opening structure at the site and screwing the duct connection port there.

Embodiment 1 FIG.
FIG. 1 is a system configuration diagram showing an example of an air-conditioning ventilation system to which a blower terminal device of the present embodiment is applied, FIG. 2 is a perspective view showing the whole blower terminal device, and FIG. 3 is an enlarged perspective view of a duct connection port. 4 is a cross-sectional view of the duct connection port, FIG. 5 is an enlarged plan view of the connection port portion of the box, FIG. 6 is an enlarged cross-sectional view of the main part of the blower terminal device, and FIGS. FIG. 9 is a plan view showing the reinforcing plate, and FIG. 9 is a perspective view of the blower terminal device shown excluding the duct connection port.

  The blower terminal device 1 according to the present embodiment is attached to a ceiling back space 2, a wall, or under the floor of a building, for cooling and heating from the air conditioning / ventilation system 4 or the like to the room via a duct 3 as shown in FIG. The processing air and ventilation air (outdoor air in heat exchange ventilation) are supplied. As shown in FIG. 2, this device has a substantially hexahedron in which a duct connection port 6 provided with a damper device 5 for changing the air volume connected to the end of a duct 3 for sending processing air and ventilation air is opened with the lower surface as a blowout port 7. It is configured to be attached to one surface of the sheet metal box 8.

  The outer surface excluding the lower surface of the box body 8 is wrapped with a substantially hexahedron casing box 9 made of an integrally molded product of heat insulating foam material such as polystyrene foam. As shown in FIGS. 3 and 4, the duct connection port 6 is assembled with a damper device 5 mainly composed of an air volume adjusting plate 12 that is rotated by a drive motor 11 in a plastic main body 10 constituting a straight pipe type wind tunnel. It has been. A packing 13 for preventing wind leakage is provided on the surfaces 13a and 13b with which the air volume adjusting plate 12 abuts when the main body 10 is closed. The packing 13 may be attached to either the air volume adjusting plate 12 or the duct connection port 6. Further, as shown in FIG. 3, a plurality of ribs 14 are integrally formed in the circumferential direction on the back surface of the surface with which the air volume adjusting plate 12 abuts, and the stress when the air volume adjusting plate 12 is fully closed, the air volume adjusting plate 12. In addition, the transmission of the drum sound and the vibration sound of the drive motor 11 are prevented, and the strength of the main body 10 is maintained. A flange 15 is formed on the outer periphery of the wind tunnel of the main body 10, and protrusions 16 for positioning at the time of mounting are provided on a part of the flange 15, and screw insertion holes through which screws are inserted at three locations in the circumferential direction. 17 is opened.

  The box body 8 is provided with a knockout-shaped connection port 18 that can connect the duct connection port 6 to a plurality of surfaces (three surfaces in this embodiment, but may be four surfaces) (see FIG. 5). As shown in FIG. 6, the knockout portion 19 of the connection port 18 is offset from the inner side to the outer side by the thickness of the sheet metal and is punched in the circumferential direction, but is connected by several connecting portions 20. This normally punches from the inside to the outside, but even if punching from the outside to the inside, deformation of the sheet metal outside the knockout is suppressed, and cracking of the jacket box 9 is prevented. It can be easily opened on site. For example, when the center of the required opening structure 22 is punched from the outside to the inside with a hammer, the knockout portion 19 is opened. A hole is formed in the center of the opening-required structure 22, but a cutter knife or the like can be easily put on the mark of the opening-required structure 22, and opening is easy. A hole 21 through which the hanging bracket can be inserted is formed in the center of the knockout portion 19, and screw holes are provided at positions corresponding to the three screw insertion holes 17 of the duct connection port 6 at the hole edge of the connection port 18. .

  As shown in FIGS. 7 and 8, the outer surface of the outer casing 9 corresponds to the required opening structure 22 by the outer-shaped groove corresponding to the hole edge of each connection port 18 of the box 8 and each screw hole. An alignment mark 24 and an alignment mark 24 corresponding to the protrusion 16 for alignment are formed. The required opening structure 22 and the marks 23 and 24 have a trapezoidal cross section so that the outer mold can be easily removed during manufacture. As the draft angle, in the case of styrene foam, since it is not a slide mold method with a usual ~ 1.0 °, the mold cost is also reduced. Further, the inside of the jacket box 9 is suppressed to the minimum (0 to 0.3 °) from the normal draft (˜1 °) in order to minimize the gap with the box 8. Thereby, the clearance gap between the box 8 and the outer casing 9 is minimized, and airtightness is improved. The lower end of the box body 8 and the lower end of the jacket box 9 are kept airtight by sticking the packing material 25 (see FIG. 2). The damper device 5 may be assembled not in the duct connection port 6 but in the box 8.

  Along with one open hole structure 22 that needs to be connected to the duct 3, a corresponding connection port 18 of the box 8 is opened from the outside by knockout, and a jacket box 9 of heat insulating foam material is formed from the outside by screws here. And the duct connection port 6 is fixed to the box 8. The connection of the duct connection port 6 can be easily performed at the site by the marks 23 and 24 of the jacket box 9. A blow-off grill is attached to an open portion of the lower surface of the box body 8, and processing air and ventilation air are blown into the blower terminal device 1 through the duct 3 and supplied into the room through the blow-out grill.

  This blower terminal device 1 has both airtightness and heat insulation, and it is not necessary to screw the closing plate with the heat insulating foam material pasted on the connection port 18 that is not used in the construction, so that the duct connection port 6 can be installed. Changing the direction can also be handled by a simple operation of opening the connection port 18 and the required opening structure 22 at the site and screwing the duct connection port 6 there. The required opening structure 22 is offset from the inner side to the outer side by the thickness of the sheet metal, and is punched in the circumferential direction. However, since it is connected by several connecting portions 20, when hanging and fixing, the knockout portion 19 is used. If it is hung with only the door, there is a risk that the knockout part 19 may come off or the jacket box 9 may break. Therefore, when the blower terminal device 1 is suspended and fixed using the hole 21 through which the central hanging bracket of the knockout part 19 can be inserted, the reinforcing plate 26 having a larger area than the knockout part 19 as shown in FIG. Use with screws. When the reinforcing plate 26 is fixed in this manner, the knockout portion 19 protrudes outward, so that the reinforcing plate 26 can be mounted in a plane. Further, the screw hole of the reinforcing plate 26 is configured to have a screw hole at a position corresponding to the screw insertion hole 17 of the duct connection port 6. In addition, the ridge corner of one surface of the outer casing 9 has an open structure for drawing out the power supply line and the communication line to the control circuit provided inside the box body 8, but this part is finally It is closed with an airtight and heat-insulating packing 27 having only holes for drawing out the power line and communication line (see FIG. 8). And as an air-conditioning ventilation system, airtightness and heat insulation improve, and it becomes a cheap and safe structure.

It is a system configuration figure showing an example of an air-conditioning ventilation system to which a blower terminal device is applied. (Embodiment 1) It is a perspective view which shows the whole ventilation terminal device. (Embodiment 1) It is an expansion perspective view of a duct connection port. (Embodiment 1) It is sectional drawing of a duct connection port. (Embodiment 1) It is an enlarged plan view of the connection port portion of the box. (Embodiment 1) It is an expanded sectional view of the principal part of a ventilation terminal device. (Embodiment 1) It is a perspective view of the ventilation terminal device shown except a duct connection port. (Embodiment 1) It is a perspective view of the ventilation terminal device shown except a duct connection port. (Embodiment 1) It is a top view which shows a reinforcement board. (Embodiment 1) It is a disassembled perspective view of the conventional ventilation terminal device. It is a disassembled perspective view of the conventional ventilation terminal device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Air blow terminal device, 3 Duct, 6 Duct connection port, 7 Air outlet, 8 Box body, 9 Outer box, 18 Connection port, 19 Knockout part, 22 Open hole structure, 23, 24 mark.

Claims (2)

A blower terminal device that includes a duct connection port connected to a duct that sends processing air, and blows out processing air into a room that includes a damper that varies the air volume,
It consists of a substantially hexahedral sheet metal box opened on one side as a blowout outlet, and a substantially hexahedral outer casing made of an integrally molded product of heat insulating foam material surrounding the outer surface excluding the one surface of the box,
The box body is provided with a knockout-shaped connection port that can connect the duct connection port to a plurality of surfaces thereof,
The outer surface of the jacket box is provided with a required opening structure corresponding to the hole edge of each connection port of the box,
Opening the one required opening structure required, opening the corresponding connection port of the box, connecting the duct connection port ,
A blower terminal device provided with a mark indicating a screwed portion of a duct connection port and a mark indicating a mounting position of the duct connection port on the outer periphery of the required opening structure on the outer surface of the jacket box . A blower terminal device that includes a duct connection port connected to a duct that sends processing air, and blows out processing air into a room that includes a damper that varies the air volume,
It consists of a substantially hexahedral sheet metal box opened on one side as a blowout outlet, and a substantially hexahedral outer casing made of an integrally molded product of heat insulating foam material surrounding the outer surface excluding the one surface of the box,
The box body is provided with a knockout-shaped connection port that can connect the duct connection port to a plurality of surfaces thereof,
The outer surface of the jacket box is provided with a required opening structure corresponding to the hole edge of each connection port of the box,
Opening the one required opening structure required, opening the corresponding connection port of the box, connecting the duct connection port,
A blower terminal device in which a knockout portion of a connection port of a box is projected from the inside to the outside.

Images