JPH04292735A - Oven hood - Google Patents

Abstract

PURPOSE:To prevent a drop in an indoor cooling/heating efficiency by an outdoor air to be supplied and a drop in an exhaust air collection rate of contaminated air simultaneously. CONSTITUTION:There is installed an outer frame hood 9 which forms an air supply ventilating passage between an outer peripheral part of a main body hood 3 provided with an exhaust air fan 2. The end section of the air supply ventilating passage 6 is used as an outlet 8. This construction makes it possible to allow an supply air to be exhausted outdoors 12 together with contaminated air 11, and prevent the supply air from being dispersed in the indoor air. A further attempt to bend inward the lower end of the outer frame 9a forces the supply air 13 to flow at an intake port 2 of the main body hood 3 and guides the direction of contaminated rising air to the inward direction, thereby preventing the contaminated air from being dispersed in the indoor air.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous supply/exhaust type range hood that exhausts oily smoke from a kitchen and supplies outside air.

0002

BACKGROUND OF THE INVENTION In recent years, houses have become increasingly airtight, and ventilation in kitchens has created negative pressure indoors, causing various problems such as a decline in smoke exhaust performance.

[0003] For these reasons, simultaneous air supply and exhaust type range hoods are becoming mainstream as a means of ventilating oil smoke and the like generated during cooking in kitchen rooms.

[0004] A conventional range hood of this type is disclosed in Japanese Patent Application Laid-open No. 1-
A configuration as shown in Japanese Patent No. 114648 was common. The configuration will be described below with reference to FIG. 5.

As shown in the figure, reference numeral 101 is a hood body having an intake port opened on the bottom surface, and an electric motor 104 inside.
The fan casing 103 has a built-in blade 105, and a discharge port of the fan casing 103 is communicatively connected to an adapter 106 fixed to the upper surface of the hood body 1. Additionally, an air supply duct connection section 1 is provided above the hood body 101.
08 is removably provided, and an indoor air supply port 110 is removably installed in the air supply box 107.
An air supply louver 109 is provided. Further, a front hood 115 is provided on the front side of the hood main body 101.

In the above configuration, when the range hood is operated, air 112 contaminated with oil generated during cooking is removed.
is discharged to the outdoors 113 through the suction port 102 of the hood body 1, and at the same time, outside air 114 passes through the air supply box 7 and is blown out from the air supply port 110 to the indoor 111 side. The blown outside air diffuses into the indoor air, is sucked in through the suction port 102 together with dirty air, and is discharged to the outside 113.

[0007]

[Problems to be Solved by the Invention] In such conventional range hoods, the outside air that is supplied to compensate for the pressure difference between the indoor and outdoor air flows around the entire indoor room 111 side and diffuses into the indoor air. As a result, there was a problem in that the heating and cooling effect of the room 111 was reduced.

[0008] The present invention solves the above-mentioned problem, and prevents the outside air supplied to correct the pressure difference between the inside and outside from diffusing into the indoor air, thereby reducing the heating and cooling effect inside the room. can be prevented. The primary purpose is to provide range hoods.

[0009] The second purpose is to prevent the ventilation efficiency, which is the original purpose of the range hood, from decreasing when achieving the first purpose, which is to prevent a decrease in the heating and cooling effect.

0010

[Means for Solving the Problems] A first means for achieving the first object of the present invention is to provide a box-like main body hood equipped with an exhaust blower and having a suction port on the lower surface, and an air supply from a box-shaped outer frame hood, which is equipped with an air blower, covers the main body hood so as to form an air supply ventilation path between the main body hood and the outer periphery of the main body hood, and has a lower end of the air supply ventilation path as an outlet. This is the structure of the range hood.

[0011] A second means for achieving the second object is to provide a range hood structure in which the outlet of the outer frame hood in the first means is inclined inward.

0012

[Operation] With the configuration of the first means described above, when the range hood is operated, the dirty air generated during cooking is sucked in from the suction port of the main body hood and exhausted to the outdoor side by the exhaust blower. At the same time, outside air is guided by the air supply blower to the air supply ventilation path, and is blown out from the air outlet downwards around the suction port of the main hood, and is sucked into the suction port along with the dirty air generated during cooking. This prevents outside air from dispersing into the indoor air.

[0013] Furthermore, with the configuration of the second means, the air blown out from the air outlet flows inward along the surface formed by bending the lower end of the outer frame hood inward, thereby preventing air from being generated during cooking. Since the dirty air that rises is directed inward, it is possible to prevent the dirty air from dispersing into the air inside the room.

[0014]

Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the figure, there is a box-shaped main body hood 3 which houses an exhaust air blower 1 and has an inlet 2 on the bottom surface, and an outer periphery 5 of the main body hood 3 which has an air supply blower 4. A supply/exhaust type range hood is constructed of a box-shaped outer frame hood 9 that covers the main body hood so as to form an air supply air passage 6 therebetween, and an air outlet 8 is provided at the lower end of the air supply air passage 6. It is provided.

In the above configuration, when the range hood is operated, the dirty air 11 generated during cooking is sucked through the suction port 2 of the main body hood 3 by the exhaust blower 1 and discharged to the outside 12, and at the same time 13 is led to the air supply air passage 6 by the air supply blower 4, and is blown downward from the air outlet 8 surrounding the suction port 2 of the main body hood, and removes dirt that rises from the gas range 7 during cooking. air 1
Together with 1, it is sucked into the suction port 2 and discharged to the outdoor side 12.

As described above, according to the range hood of the first embodiment of the present invention, the outside air 13 to be supplied is blown downward while surrounding the suction port 2 and rises from the gas range 17. It is sucked into the suction port 2 together with the dirty air 11 and discharged to the outside 12, and the amount of outside air 13 that diffuses into the air inside the room 10 is extremely small, making it possible to prevent the cooling and heating effect of the indoor side 10 from decreasing. can.

Next, regarding the second embodiment of the present invention, FIG.
This will be explained with reference to FIG.

Note that the same components as in the first embodiment are given the same reference numerals, and their explanations will be omitted.

As shown in the figure, this embodiment has the above-mentioned first
This embodiment is different from the embodiment in that the lower end of the outer frame hood 9a is bent inward to form the air outlet 8a.

With the above configuration, the supplied outside air 13 is
The air is blown out along the bent shape of the air outlet 8a, surrounding the suction port 2 of the main body hood, and facing inward. Therefore, the dirty air 1 rising from the gas range 7
The direction of air 1 is restricted inward, and it is sucked into the suction port 2 together with the outside air 13 and is discharged to the outside 12 side.

As described above, according to the range hood of the second embodiment of the present invention, the direction of the rising dirty air 11 is restricted inward by the outside air 13 that is supplied, and the direction of the rising dirty air 11 is regulated inward, so that it flows into the suction port 2 together with the outside air 13. Since the air is sucked into the air and discharged to the outside 12 side, air can be supplied without reducing the heating and cooling effect of the room 10, and the polluted air 11 is not diffused into the air inside the room 10, making it possible to remove waste air. It is possible to prevent the collection rate from decreasing.

[0023]

Effects of the Invention As is clear from the above embodiments, according to the present invention, the outside air to be supplied is directed downward from the outer periphery of the main body hood equipped with an exhaust blower in order to correct the pressure difference between indoor and outdoor. Since the outside air is blown out from the gas stove, this outside air is discharged outside along with the dirty air rising from the gas range, preventing it from diffusing into the indoor air, and preventing the indoor heating and cooling effect from decreasing. can be provided.

Furthermore, since the outside air blown out from the outlet flows inward, that is, toward the suction port of the main body hood, the direction of the dirty air rising from the gas range is directed toward the suction port, and it is mixed with the outside air. To provide a range hood that can reliably exhaust the waste air outdoors and prevent it from diffusing into the indoor air, thereby preventing a reduction in waste air collection efficiency.

[Brief explanation of drawings]

FIG. 1 is a front cross-sectional view showing the installation state of a range hood according to a first embodiment of the present invention.

[Fig. 2] Side sectional view of the first embodiment

[Fig. 3] Front sectional view showing the installation state of the second embodiment.

[Fig. 4] Side sectional view of the second embodiment

[Figure 5] Side sectional view showing the installation state of a conventional range hood

[Explanation of symbols]

1. Exhaust blower 2 Suction port 3 Main body hood 4 Air supply blower 5 Outer circumference 6 Air supply ventilation duct 8 Air outlet 8a　Air outlet 9 Outer frame hood 9a Outer frame hood

Claims (2)

[Claims] Claim 1: A box-shaped main body hood including an exhaust blower and an inlet on the lower surface, and an air supply ventilation path formed between the outer periphery of the main body hood including an air supply blower. A range hood comprising a box-shaped outer frame hood that covers the main body hood and has a lower end of the air supply air passage as an outlet. 2. The range hood according to claim 1, wherein the lower end of the outer frame hood is bent inward.