JPH05751Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a range hood that collects smoke generated when cooking on a kitchen stove.

BACKGROUND OF THE INVENTION Generally speaking, there is a demand for range hoods that more effectively capture smoke. For this reason, conventional range hoods had a configuration as shown in FIG. 3. i.e. hood 10
1 has an open bottom surface as a suction port 102, a discharge port 103 is provided at the rear of the top surface, and a blower 106 with a suction port located at the discharge port 103 is mounted on the top surface. However, the front part of the suction port 102 is
6, the wind velocity of the smoke that is taken in is considerably lower than that near the outlet 103 of the hood 101, and the smoke that rises to the front side of the inlet 102 is not sufficiently collected and flows outside the hood 101. This will result in leakage. Therefore, a partition plate 104 is provided in the hood 101 from near the center of the discharge port 103 to the front of the suction port 102 to divide the hood into two.
A front suction port 107 is formed between the tip 105 of the partition plate 104 and the front surface of the hood 101.
The wind speed of the smoke in the front part was increased to increase the collection effect. The relationship between the ventilation air volume and collection efficiency of this range hood is shown by curve B in FIG.

Problems to be Solved by the Invention In such a conventional configuration, as shown in FIG. and leaks out of the hood 101. Accordingly, another airflow B is also guided by airflow A and leaks out of the hood 101, causing the front suction port 107 to leak out of the hood 101.
There was a problem in that the smoke riding on the updraft could not be sufficiently collected, and the purpose of increasing the smoke collection effect by the partition plate 104 could not be sufficiently achieved.

The present invention is intended to solve such problems, and aims to provide a range hood that can effectively collect smoke even when rising air currents collide with the partition plate.

Means for Solving the Problem In order to solve this problem, the present invention provides a hood with an opening at the bottom surface as a suction port and a discharge port at the rear of the top surface, and a hood in which a central portion of the discharge port is provided inside the hood. A partition plate extending from near the front end of the suction port to divide the inside of the hood into upper and lower parts and forming a front suction port between the tip and the front end of the hood, and a blower suction port at the discharge port. and a blower placed on the hood, and the range hood has a structure in which the tip of the partition plate is bent downwardly and rearward.

Effect With this configuration, when the smoke riding the upward airflow from the stove hits the partition plate and diffuses, the curved tip of the partition plate changes the flow in the opposite direction to the diffusion direction, and this flow and the partition plate The velocity of the diffused airflow immediately after heating cancels each other out, and the smoke accumulates near the curved part, and the smoke is sucked into the front suction port formed at the tip of the partition plate.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG. In the figure, a hood 1 has an open bottom surface as a suction port 2, a discharge port 3 provided at the rear of the top surface, and a blower 6 with a blower suction port located at the discharge port 3.
is placed on the top. Inside the hood 1, a partition plate 4 is provided extending from near the center of the discharge port 3 to the front part of the suction port 2, dividing the inside of the hood 1 into two vertically. A front suction port 7 communicating with the discharge port 3 through the upper side of the partition plate 4 is formed between the front end of the partition plate 4 and the front end of the partition plate 4 . Further, a curved portion 5 directed downward and rearward is formed at the tip of the partition plate 4. Therefore, the front suction port 7 has a bell mouth shape.

The operation of the range hood configured as described above will be explained below based on FIG. 2. First, when smoke rises on an upward airflow from a stove (not shown) installed below the hood, it hits the partition plate 4 in the hood 1 and spreads. The airflow flowing backward is sucked into the blower 6 through the discharge port 3 and discharged outdoors, but the airflow flowing forward is directed in the opposite direction to the diffusion direction by the curved portion 5 at the tip of the partition plate 4. The airflow is changed into airflow H, which interferes with airflow N and the diffused airflow, canceling out the diffusion speed of each other, resulting in a temporary accumulation of smoke. The accumulated smoke is sucked in from a bellmouth-shaped front suction port 7 and discharged outdoors by a blower 6. In this way, smoke flowing upstream from the stove can be effectively collected. Furthermore, the fifth
In the figure, data obtained by actually measuring the relationship between the ventilation air volume and the collection efficiency of the range hood of this example is shown by curve A, and it can be seen that the collection efficiency is improved compared to the conventional range hood.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, even if smoke carried by the rising air from the stove spreads at the hood suction port, the curved part formed at the tip of the partition plate prevents the smoke from flowing. By changing the direction to the rear, it is possible to effectively collect smoke without leaking it outside the hood.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a range hood according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of essential parts of the range hood, Fig. 3 is a sectional view of a conventional range hood, and Fig. 4 is a sectional view of the same range hood. FIG. 5 is an enlarged cross-sectional view of a main part of the present invention, and is a comparison diagram of the collection efficiency of a range hood according to an embodiment of the present invention and a conventional range hood. 1...Hood, 2...Suction port, 3...Discharge port,
4... Partition plate, 5... Curved part, 6... Blower,
7...Front suction port.

Claims (1)

[Scope of utility model registration request] A hood having a suction port opened at the lower surface and a discharge port provided at the rear of the upper surface; , a partition plate having a front suction port formed between its tip and a front end of the hood, and a blower placed on the hood with a blower suction port located at the discharge port, A range hood with the tip of the board curved downwards and backwards.