JPH06300340A - Vav apparatus - Google Patents

Abstract

PURPOSE:To reduce an assembling man-hour and to facilitate maintenance by providing a drive motor for switching a damper under a body. CONSTITUTION:Openings 3 communicating with connecting adapters 1 are provided in a body 2 of a VAV apparatus having the adapters 1 at front and rear sides, a groove 4 is formed adjacent in one direction of the opening 3, and a heat insulator 5 formed of foamed styrene, etc., to be vertically divided to upper and lower parts is provided. A cylinder 8 to be opened or closed by a rotation of a shaft 7 is provided at a center in a circular damper 6. Further, a bearing container 10 for containing a bearing 9 of the shaft 7 is provided at an upper part, a support base 12 for supporting a drive motor 11 for driving the shaft 7 is provided at a lower part to form a damper holder 13. The holder 13 is engaged with the groove 4 of the insulator 5, the motor 11 is detachably mounted with screws 14 at the base 12 formed at a lower part of the holder 13 in a state exposed from the body 2, and connected to the shaft 7 via a connector 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VAV device mainly used for duct type ventilation and air conditioning units.

[0002]

2. Description of the Related Art In recent years, with the spread of ventilation and air conditioning units for ventilation and air conditioning installed on the ceiling of a building or the like, a VAV device which is a device for varying the air volume has a simple structure and is easy to maintain. The demand for is increasing.

Conventionally, this type of ventilation and air conditioning unit has a structure in which conditioned air is sent from the main body of the unit to each room through a duct, and in many cases, a VAV device controls the air blow to each room. Is coming.

The structure will be described below with reference to FIG. As shown in the figure, the body 101 of the VAV device
The duct connection adapters 102 and 103 are provided outside the unit to connect the duct (not shown) to an air conditioner (not shown).
And by connecting to the blowout grill (not shown),
The air sent from the air conditioner is supplied to the living room from the blowing grill. Further, inside the main body 101, cylindrical openings 104 and 105 through which conditioned air is passed are provided, and the cylindrical opening 104 has a cylindrical ventilation portion and a flange portion for fixing to the main body 101. A cylindrical portion 106 which is a resin molded product having a bearing, bearing portions 107 and 108 provided at positions symmetrical to the cylindrical ventilation portion of the cylindrical portion 106, and a shaft 109 which is inserted into the bearing portions 107 and 108. A circular damper 110 fixed to the shaft 109 is held, the shaft 109 is connected to a drive motor 112 via a connecting portion 111, and the main body 101 is thermally insulated both inside and outside by a heat insulating material 113.

In the above-mentioned structure, when the air-conditioned air is passed by the instruction of the control device (not shown) of the VAV device, the drive motor 112 is energized and inserted into the bearing parts 107 and 108 through the connection part 111. Shaft 10
9 rotates, the circular damper 110 fixed to the shaft 109 is opened, and conditioned air is allowed to pass through. On the contrary, when the conditioned air is shut off, the circular damper 110 is closed to shut off the conditioned air by the same function as described above.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the configuration of the V device, the bearing portions 107 and 108 provided at symmetrical positions on the cylindrical ventilation portion, and the bearing portion 10
It is necessary to fix the cylindrical portion 106 holding the shaft 109 to be inserted into 7, 108 and the circular damper 110 fixed to the shaft 109 to the main body 101 with the screws 106a and 106b. It is necessary to attach the heat insulating material 113 to the outside, which complicates the configuration of the VAV device and increases the number of assembling steps.

Further, since the electrical component is located on the side surface of the main body 101, when inspecting from an inspection port (not shown) provided on the ceiling surface, the body of a person to be maintained is inserted into the inspection port. It was necessary and there was a problem that it was difficult to maintain.

The present invention solves the above-mentioned problems by providing a VA
An object of the present invention is to provide a simple VAV device that simplifies the configuration of the V device, reduces the number of assembly steps, and is easy to maintain.

[0009]

In order to achieve the above object, the VAV device of the present invention has a main body of the VAV device provided with front and rear connecting adapters for connecting to a duct, and the duct connection inside the main body. A circular damper is formed by the rotation of the shaft, which has an opening that communicates with the adapter for use, and which is formed of expanded polystyrene, etc., which is provided by forming a groove adjacent to one side of the opening and dividing it vertically. It has a tubular portion that can be opened and closed in the center, a bearing housing portion for the shaft is provided in the upper portion, a support base for supporting a drive motor for driving the shaft is provided in the lower portion, and a resin-made damper holding portion. The damper holding portion is provided in the groove of the heat insulating material, and a drive motor that is exposed from the main body and is detachable from the outside is provided on a support base formed at a lower portion.

[0010]

According to the present invention, the heat insulating material made of expanded polystyrene or the like in the main body is divided into upper and lower parts by the above-mentioned structure, and the heat insulating material is provided with a groove, and the circular damper can be opened and closed in the groove. And a damper holding part having a support base for supporting the damper driving motor is provided at the bottom,
When installed on the ceiling, maintenance of the drive motor can be facilitated from below.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. As shown in the figure, a VA provided with front and rear connection adapters 1 for connecting to a duct (not shown).
The V device has a main body 2 and an opening 3 communicating with the connection adapter 1 inside the main body 2. A groove 4 is formed adjacent to one side of the opening 3 and is divided into upper and lower parts. A heat insulating material 5 formed of styrene foam or the like is provided.

Further, the circular damper 6 has a cylindrical portion 8 at the center which forms an opening which can be opened and closed by rotating the shaft 7.
A bearing accommodating portion 10 for accommodating the bearing 9 of the shaft 7 is provided in the upper portion, and a support base 12 for supporting a drive motor 11 for driving the shaft 7 is provided in the lower portion, and a damper holding portion 13 is formed by resin molding.
To form.

Then, the damper holding portion 13 is fitted into the groove 4 of the heat insulating material 5, and is attached / detached with the screw 14 while being exposed from the main body 2 to the support base 12 formed under the damper holding portion 13. A drive motor 11 is freely attached and connected to the shaft 7 via a connecting tool 15.

In the above structure, when the conditioned air is passed by the support of the control device (not shown) of the VAV device, the drive motor 11 is energized and is received by the bearing 9 via the connector 15. The shaft 7 rotates, the circular damper 6 fixed to the shaft 7 is opened, and the conditioned air is sent through the inside of the main body 2.

When shutting off the conditioned air,
The circular damper 6 is closed by the same action as described above, and the conditioned air is cut off in the main body 2.

As described above, according to the VAV device of the embodiment of the present invention, since the drive motor 11 for opening and closing the damper 6 is provided in the lower portion of the main body 2, the inspection port provided on the ceiling surface during maintenance (see FIG. When checking from (not shown), it is not necessary to insert the body of the person to be maintained into the inspection port, and the drive motor 11 is located at the position where the inspection port is opened. 11 and circular damper 6
Can be removed to facilitate maintenance.

[0017]

As is apparent from the above embodiments, according to the present invention, a heat insulating material made of expanded polystyrene or the like is provided in the upper and lower parts of the body, and the circular damper is provided in the groove formed in the heat insulating material. Since a damper holding portion holding the above is provided and a damper driving motor is provided below the damper holding portion, it is not necessary to separately attach a heat insulating material inside and outside the main body, and the driving motor can be Since it is located at the lower part of the main body, it is possible to provide a VAV device with good maintainability that can be easily inspected from the inspection port provided on the ceiling surface.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a VAV device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing the configuration of a conventional VAV device.

[Explanation of symbols]

 1 Connection Adapter 2 Main Body 3 Opening 4 Groove 5 Heat Insulating Material 6 Circular Damper 7 Shaft 8 Cylindrical Section 10 Bearing Storage Section 11 Drive Motor 12 Support Stand 13 Damper Holding Section

Claims (1)

[Claims] 1. A main body of a VAV device provided with front and rear connecting adapters for connecting to a duct, and an opening communicating with the duct connecting adapter inside the main body, and at one side of the opening. A heat insulating material formed by styrofoam or the like which is provided by dividing the groove to form a groove adjacent to each other,
A circular damper has a tubular portion in the center that can be opened and closed by rotating the shaft, a bearing housing for the shaft is provided in the upper part, and a support base for supporting a drive motor for driving the shaft is provided in the lower part. A VAV device including a molded damper holding portion, the damper holding portion provided in the groove of the heat insulating material, and a drive motor that is exposed from the main body and detachable from the outside on a support base formed at a lower portion. .