JPH01167549A - Simultaneous supply and discharge range hood fan - Google Patents

Abstract

PURPOSE:To prevent the penetration of open air when a hood is not used, by mounting an air inlet box having a removable air inlet duct connection part to the upper part of the main body of a hood, and installing to said air inlet box a shutter which manually opens and closes a ventilation passage connecting the air inlet duct connection part with a room side air inlet. CONSTITUTION:A range hood's main body 1 is provided with a casing 3 built in with discharge fan 5 and communicated with open air. To the upper part of the hood's main body 1 are installed an air inlet box 7 to which a connection part 8 of said air inlet box is removably mounted and a louver 9 having a room side air inlet 10. This louver 8 is provided with a shutter 11 which can open and close the air inlet 10. During the application of the range hood, the shutter 11 is opened to let the open air to enter the room, thereby eliminating a differential static pressure between indoor and outdoor. When the range hood is not used or during cold weather outside, the shutter is closed so as to prevent the penetration of cold open air.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a simultaneous supply/exhaust type range hood that exhausts soot from a kitchen and supplies outside air.

Conventional technology This type of conventional simultaneous supply/discharge type range hood is shown in Figures 3 to 4.
The configuration was as shown in the figure. That is, a hood main body 1 that is attached above a kitchen appliance (not shown) and has an open bottom surface.
A fan casing 103K has a built-in electric motor 104 and blades 105, and the discharge port of the fan casing 103 is fixed to the upper surface of the hood body 101 and connected to the adder 106. Further, an air supply box 11o having an air supply duct connection part 111 is provided above the hood main body 101.
The air supply box 11o has an indoor air supply port 113.
An air supply louver 112 having an air supply louver 112 is removably provided. A front hood 102 is provided to cover the front surface of the hood main body 101.

In the above configuration, the oil smoke generated during cooking is removed from the electric motor 1.
By operating the blade 105 attached to the fan casing 103, the adapter 106 and the exhaust duct connected to the adapter 106) 107'ii
Discharged into the street.

On the other hand, when oil smoke is discharged, the static pressure in living rooms such as the kitchen is lower than that outside. Along with this, the air supply duct connection part 111
The outdoor air enters the air supply box 110 through the entire air supply duct 115 fixed by the indoor air supply port 11
3, it was supplied indoors, completely eliminating the static pressure difference between indoors and outdoors.

Problems to be Solved by the Invention In such a conventional configuration, outdoor air communicates with indoor air through the air supply duct 116, the air supply box 11o, and the indoor air supply port 113. Even when the range hood is not operating, if the outside wind blows strongly outside, the static pressure outside will increase and the outside air will enter the room. In winter, especially in cold regions, even when the range hood is not operating, outside air constantly enters the living room such as the kitchen.
This has had problems such as lowering the indoor temperature and increasing the heating load. In addition, when you operate the range hood in the winter, a large amount of cold outside air flows into the room through the air supply opening, causing the indoor temperature to drop rapidly and causing discomfort. It had

In order to solve the above problem, the present invention aims to provide a simultaneous air supply/exhaust type range hood that can prevent outside air from entering a living room when the outside air is cold or when the range hood is not in use.

Means for Solving the Problem In order to solve this problem, the present invention provides a range hood body having a suction port on the lower surface, a removable air supply frame, and an indoor air supply port inside the frame. It has a shutter that can manually open and close the air supply ventilation path connecting the air supply duct connection part.

Function: With this configuration, by closing the shutter, the indoor and outdoor ventilation passages are closed, preventing outside wind from entering.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a hood main body having a suction port opening on the bottom surface, and a fan casing 3 with a built-in electric motor 4 and 6 ft of blades. connected to.

Further, a front hood 2 is provided to cover the front surface of the hood main body 1. Further, an air supply box 7 having an air supply duct connection part 8 is removably provided above the hood main body 1, and an air supply louver 9 having an indoor air supply port 10 is removably provided in the air supply box 7. ing. The air supply louver 9 also has a shutter 11 that can open and close the indoor air supply port 10.
is held via the shirt shaft 12. Said shutter 1
1 can be opened and closed by operating a shutter opening/closing lever 13.

In the above configuration, when using the range hood, shutter 1
1 is opened, the air outside the room communicates with the room, and the outdoor air is supplied into the room, eliminating the static pressure difference between the room and the outside. On the other hand, when the range hood is stopped or the outside air is cold, the shutter 11 closes to block the indoor ventilation path from the outside air. Therefore, it is possible to prevent outside air from entering the room.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, by providing a shutter in the air supply frame that can freely open and close the air supply passage that communicates the indoor and outdoor areas, the range hood can be stopped. When the outside temperature is cold, the air supply passage that connects the indoor and outdoor areas can be shut off, eliminating the inflow of outside air. No more problems like feeling cold.

[Brief explanation of the drawing]

FIG. 1 is a curved view of the installation side of a range hood according to an embodiment of the present invention, FIG. 2 is a partially sectional perspective view of an air supply box, and FIG.
The figure is a perspective view showing a conventional range hood, and FIG. 4 is a sectional view of the same side. 1... Hood body, 3... River/fan casing, 7... Air supply box, 8... Air supply duct connection part, 9... Supply Ki louver, 1o...
...Indoor air supply vent, 11...Shutter. Name of agent: Patent attorney Toshio Nakao and one other person An
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Claims (1)

[Claims] A hood body that is attached to the wall of a house above the kitchen appliances, houses a fan casing that exhausts oil smoke from the room, has an inlet opening at the bottom, and an air supply duct that is detachable from the hood body. It has an air supply box having an air supply louver with a connection part and an indoor air supply port opened, and a manual air supply ventilation passage connecting the indoor air supply port and the air supply duct connection part in the air supply box. A simultaneous supply and discharge type range hood fan characterized by having a shutter that can be freely opened and closed.