JPH0555169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a range hood filter that automatically chemically decomposes adhering oil.

BACKGROUND ART In recent years, filters for range hoods have been made of Almiras, which collects cooking oil and can be periodically removed and cleaned.

The conventional range hood filter as described above will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a conventional range hood filter, and shows the installed state. In FIG. 1, reference numeral 101 is a box-like hood having an air blower 102 therein, and a range hood filter 103 is installed inside the hood 101 over the entire surface of the air inlet of the air blower 102.

The operation of the range hood filter configured as above will be described below.

First, the oily smoke generated during cooking enters the hood 101, most of which is collected by the range hood filter 103, and the rest is discharged outdoors through the blower 102.

Problems to be Solved by the Invention However, with the above-mentioned configuration, the collected oil gradually increases until it becomes saturated, and the oil falls, so it has to be constantly removed and washed.

The present invention solves the above problems and provides a range hood filter that automatically chemically decomposes the collected oil to maintain a clean state at all times and that does not require frequent cleaning.

Means for Solving the Problems In order to achieve the above object, the present invention has a plurality of L-shaped rectangular bodies having a low-temperature catalyst for decomposing oil attached to their surfaces, arranged vertically so that the peaks of each body face outward. A plurality of L-shaped rectangular bodies are arranged in parallel at regular intervals, and other L-shaped rectangular bodies are arranged in a staggered position with respect to the plurality of rectangular bodies to provide a space for air to pass through so that the peaks of each face outward. The heaters are arranged in parallel at regular intervals in this manner, and each heater is provided inside a line connecting both ends of the rectangular parallelepiped.

Effects The present invention has the above-described configuration, so that when oily smoke generated by cooking passes through the gaps between the plurality of L-shaped rectangular bodies, the oily smoke collides with and adheres to the L-shaped rectangular bodies.
When it is heated by a heater installed inside the mountain, the catalyst attached to the surface of the L-shaped rectangular body acts, chemically decomposing the oil, removing the oil, and purifying the filter. Become.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

As shown in the figure, a plurality of L-shaped rectangular bodies 1, each having a low-temperature catalyst for decomposing oil attached to its surface, are arranged in parallel at regular intervals. At this time, the rectangular parallelepiped 1 is placed vertically with each peak facing outward. Then, another plurality of rectangular bodies 2 having the same shape as the plurality of rectangular bodies 1 are arranged at a fixed distance from the rectangular parallelepiped 1 and in staggered positions, and these rectangular bodies 1 A space through which air can pass is provided between the rectangular parallelepiped body 2 and the rectangular parallelepiped body 2. At this time, the rectangular parallelepiped 2 is also placed so that each peak faces outward. In each of the rectangular bodies 1 and 2, a heater 3 is provided inside a line connecting both ends thereof.

The operation of the range hood filter configured as above will be explained below.

First, air containing oil smoke generated by cooking passes between the plurality of L-shaped rectangular bodies 1 and 2, but the oil hits and adheres to the rectangular bodies 1 and 2. By applying current to the heater 3 and heating it, the above L
A catalyst attached in advance to the surfaces of the L-shaped rectangular bodies 1 and 2 acts, decomposing the oil into water vapor and carbon dioxide, and purifying the surfaces of the L-shaped rectangular bodies 1 and 2.

As described above, according to this embodiment, the catalyst is attached to the surfaces of the L-shaped rectangular bodies 1 and 2 that are arranged at a constant distance from each other, and the catalyst is automatically heated by the heater 3. can be removed by chemical decomposition.

In addition, by arranging the L-shaped rectangular bodies 1 and 2 in a staggered manner, and arranging the heaters inside the line connecting the ends of the two sides of the L-shaped rectangular bodies 1 and 2, the It is difficult for most of the air to reach the heater 3, and since the heater 3 is arranged inside the two rows of rectangular bodies 1 and 2, the radiant heat from the heater 3 and the opposing rectangular bodies 1 and 2 are The amount of reflected heat radiated to the outside is small, and the heater 3 is less likely to get dirty with oil dust contained in the air. Since it is provided along the same line, it flows downward, so the thermal efficiency does not decrease, and heat is applied almost uniformly to the surfaces of the rectangular bodies 1 and 2 on which the catalyst is attached, so that the heater Therefore, the temperature of the heater 3 does not need to be kept much higher than the temperature for decomposing the oil in consideration of heat loss, and can be set to a lower temperature.

By the way, in order to activate the catalyst to decompose oil, it is necessary to heat it to about 300℃, but since the ignition point of oil is about 360℃, the temperature setting of heater 3 is too high. If a large amount of oil adheres to the
There is a risk of ignition. This risk becomes even higher if the oil contains cotton waste, which has a low ignition point.

However, in the range hood filter of this embodiment, most of the oil adheres to the outer surface of the windward side of the rectangular bodies 1 and 2, and as mentioned above, almost no oil adheres to the heater 3, and only a small amount of oil adheres to the heater 3. However, the temperature of the heater 3 can be set low, so there is no risk of fire.

Effects of the Invention As described above, the present invention provides the following features:
By attaching a catalyst and heating it with a heater, the oil in the oil smoke generated during cooking is automatically and highly efficiently chemically decomposed, and by constantly cleaning the filter, it is possible to prevent oil from falling, and the oil can be constantly cleaned. There is no need to remove and wash the heater, and since the heater has high thermal efficiency, the set temperature can be kept low, reducing power consumption. Even if a heater is installed, safety can be ensured without ignition.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional range hood equipped with a filter, Fig. 2 is a perspective view of the filter, Fig. 3 is a perspective view of a range hood filter according to an embodiment of the invention, and Fig. 4 is a cross-sectional view of the same filter. It is a front view. 1, 2... rectangle, 3... heater.

Claims (1)

[Claims] 1. A plurality of L-shaped rectangular bodies with low-temperature catalysts for decomposing oil attached to the surface are arranged vertically in parallel at regular intervals with the peaks facing outward, and other L-shaped rectangular bodies are The rectangular bodies are arranged in a staggered position with respect to the plurality of rectangular bodies to provide a space for air to pass through, and are arranged in parallel at regular intervals with their respective peaks facing outward, and both ends of the pair of rectangular bodies are arranged in a staggered manner. A range hood filter with a heater installed inside each line connecting the two.