Range hood

Abstract

This will allow range hoods to be made smaller. [Solution] A range hood 100 comprising a blower 200 and a hood 300 that guides intake air to the blower 200, wherein the blower 200 has a cylindrical fan 202 and a fan casing 203 that covers the fan 202, the rotation axis of the fan 202 is set to be inclined at a predetermined angle with respect to the horizontal plane, and the lower portion of the fan casing 203 is formed to have a lower surface between the horizontal plane and the surface inclined at the predetermined angle.

Description

Technical Field

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[0001] The present invention relates to a range hood that is disposed above a cooking appliance and ventilates.

Background Art

[0002] In a kitchen or the like, a range hood including a hood body composed of a hood and a blower box, a filter, and a blower is used. By rotating the fan of the blower, oil fumes and the like are collected in the hood, and the oil is captured by the filter. The fan of the blower is rotationally driven, for example, by a fan motor provided with the tip side of the rotation axis inclined downward (see, for example, Patent Document 1).

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the range hood with the inclined rotation axis as described above, the space for accommodating the fan casing tends to be large, and it is difficult to miniaturize the entire range hood.

[0005] The present invention has been made in view of the above points, and an object thereof is to enable the range hood to be easily miniaturized.

Means for Solving the Problems

[0006] To achieve the above object, The present invention is a range hood including a blower and a hood that guides intake air to the blower, where the blower has a cylindrical fan and a fan casing that covers the fan, The rotating shaft of the fan is provided at an angle inclined by a predetermined angle with respect to the horizontal plane, and the lower portion of the fan casing is formed to have a lower surface between the horizontal plane and the surface inclined by the predetermined angle.

[0007] As a result, the fan's rotation axis is positioned at an angle, and the lower part of the fan casing is formed to have a lower surface between a horizontal plane and a surface inclined by the predetermined angle, making it easy to miniaturize the range hood. [Effects of the Invention]

[0008] This invention makes it possible to easily miniaturize range hoods. [Brief explanation of the drawing]

[0009] [Figure 1] A front view showing the main components of a range hood. [Figure 2] A front view showing the configuration of the fan casing. [Figure 3] An exploded perspective view showing the main components of a range hood. [Figure 4] A cross-sectional view showing the configuration of filters, etc. [Figure 5] A perspective view showing a ceiling-mounted structure for low-to-high ceilings. [Figure 6] A perspective view showing ceiling-mounted structures for high ceilings and standard-height ceilings. [Figure 7] A perspective view showing a ceiling-mounted structure for high ceilings. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, components having the same function as those in other embodiments will be denoted by the same reference numerals and their descriptions will be omitted.

[0011] As shown in Figure 1, the range hood 100 includes a blower 200 and a hood 300 that guides intake air to the blower 200, both located inside the main frame 101.

[0012] The blower 200 includes a cylindrical fan 202 that is rotationally driven by a motor 201, and a fan casing 203 that covers the fan 202. The rotation axis of the fan 202 is set at a predetermined angle, for example 20°, with respect to the horizontal plane. The lower part of the fan casing 203 is formed to have a lower surface between the horizontal plane and the surface inclined at the predetermined angle, for example a lower surface 203a that is inclined at 5° with respect to the horizontal plane. In other words, the fan casing 203 is formed in a shape in which a part of the cylindrical surface has been removed, thereby making it easy to keep the height of the fan casing 203 low. An oil drain hole 203b is provided at the lowest part of the lower surface 203a. Furthermore, a convex portion 203c (and / or concave portion) is formed on the cylindrical surface of the fan casing 203, extending in a direction parallel to the rotation axis of the fan 202, i.e., in a direction inclined with respect to the horizontal direction, so that oil and other substances adhering to the inner surface of the fan casing 203 can easily flow along the convex portion 203c.

[0013] A flue member 204 is provided between the fan casing 203 and the hood 300. The flue member 204 also has inclined protrusions 204a, etc., similar to those of the fan casing 203. An exhaust port 205 is provided at the top of the fan casing 203. When the exhaust port 205 is connected to the wall via an L-shaped duct, and the rotation axis of the fan 202 is inclined as described above, the distance between the wall and the exhaust port 205 becomes longer, making it easier to connect the exhaust duct and also making it easier to secure space for installing an electric shutter.

[0014] As shown in FIG. 3, the hood 300 is provided with a hood exterior member 301, a panel 302, an inner panel 303, and a fairing 304. An opening 303a is formed in the inner panel 303, and a filter 305 is provided so as to cover the opening 303a. A safety cover 306 is attached to the blower 200 side of the filter 305. As shown in FIG. 4, the safety cover 306 is provided to be slightly inclined so that the attached oil gradually flows to the end and easily drops. The connection method between the hood exterior member 301 and the inner panel 303 is not particularly limited. For example, when a female screw portion is provided on the inner panel 303 and attached by a screw screwed from above the hood exterior member 301, the lower surface of the inner panel 303 can be smoothed to facilitate cleaning.

[0015] The filter 305 is formed by overlapping an upper member 305a with a convex shape upward and a lower member 305b with a convex shape downward. The upper member 305a has openings formed upward and around. The lower member 305b has openings similar to those of the upper member 305a formed around, and has a bottom wall at the bottom so that the captured oil accumulates.

[0016] The method of attaching the filter 305 to the inner panel 303 is not particularly limited. For example, locking claws provided on one side may be locked to the inner peripheral edge of the opening 303a, and an insertion member having a constricted portion provided on the opposite side may be fixed by a ball catch. Also, during the rotation of the fan 202, in order to prevent the filter 305 from being accidentally removed, it may be locked by a solenoid or the like. Further, when it is detected by a sensor, a limit switch, or the like that the filter 305 and the safety cover 306 are attached, the rotation of the fan may be made possible to enhance safety.

[0017] The inner panel 303 is arranged such that its outer peripheral portion corresponds to the lower surface at the outer peripheral portion of the hood 300, and a lower surface concave region 303b is formed on the inner peripheral side with the lower surface side recessed upward, and further a lower surface convex region 303c is formed on the inner peripheral side with the lower surface side protruding downward.

[0018] The filter 305 is attached to the lower surface convex region 303c of the inner panel 303, and the bottom wall of the lower member 305b protrudes downward beyond the lower surface convex region 303c of the inner panel 303. Therefore, the height position of the upper part of the upper member 305a of the filter 305 can be easily kept relatively low.

[0019] As described above, the rotation axis of the fan 202 is provided obliquely, and the lower part of the fan casing 203 is formed in a shape in which a part of the cylindrical surface is removed, so that the height of the fan casing 203 can be kept low, and the height position of the upper part of the upper member 305a of the filter 305 can be kept relatively low, whereby the range hood 100 can be easily miniaturized.

[0020] There are various ways to attach the range hood 100 to the ceiling as described above. However, since it is relatively easy to miniaturize the range hood 100, even when the ceiling is low (when the distance from the stove etc. to the ceiling is short), it is possible to easily perform the attachment while maintaining a predetermined standard. Specifically, for example, as shown in FIG. 5, it is attached to the suspension bolts 501 suspended from the ceiling by the suspension fittings 401 provided at the four corners of the main body frame 101 to which the blower 200 is attached and the reinforcing fittings 402 attached to at least two opposite sides of the main body frame 101. That is, if the suspension bolts 501 are relatively short, it is easier to attach nuts (double nuts). Also, the reinforcing fittings 402 firmly fix the suspension bolts 501 and the main body frame 101.

[0021] Furthermore, in cases where the ceiling is high or of standard height, the intermediate frame 412 may be attached to the ceiling mounting plate 411, which is attached to the ceiling by suspension bolts 501, via an intermediate frame 412, as shown in Figures 6 and 7. More specifically, the ceiling mounting plate 411 has an inverted J-shaped engagement slit 411a, and the intermediate frame 412 has a hook 412a that engages with the inverted J-shaped tip of the engagement slit 411a, allowing for easy temporary attachment (temporary fixing) through the engagement of the engagement slit 411a and the hook 412a. Therefore, after temporary attachment as described above, the ceiling mounting plate 411 and the intermediate frame 412 can be firmly fixed together to ensure reliable installation. The method of fixing the intermediate frame 412 to the main frame 101 is not particularly limited, but for example, as shown in Figure 7, by forming round holes and elongated holes as bolt holes in the intermediate frame 412 and the main frame 101, the height can be easily set in units such as 10 mm pitch. Here, for example, when attaching the ceiling mounting plate 411 to the ceiling, if the bolt hole for inserting the suspension bolt 501 is set to be relatively large and tightened with a double nut, a wide washer is used whose inner diameter corresponds to 501 and whose outer diameter or external dimensions are larger than the bolt hole. This allows for a larger tolerance for positional errors of the suspension bolt 501 while ensuring secure attachment. The wide washer is not limited to one with a bolt hole; one with a slit or notch of a width corresponding to the bolt hole diameter may also be used.

[0022] Furthermore, in order to make it easier to remove oil that has adhered to the fan 202 and other parts due to the operation of the range hood 100, the following may be done. For example, when the fan has been operated continuously for a certain period of time, such as 5 minutes or more, after the fan has been stopped, that is, after the operation to capture oil fumes has been stopped, the fan may be operated at its maximum speed for 1 minute or so to blow off the oil attached to the fan with centrifugal force. This makes it less likely for oil to accumulate on the fan and reduces the burden of cleaning. In addition, the temperature inside the blower 200 may be raised by closing the electric shutter and increasing the rotation speed of the fan during the above operation, or a heater may be installed on the outside of the fan casing 203, or the above operation may be started automatically according to the operating time. In addition, a means for generating steam may be provided to raise the temperature, or the temperature may be raised by the heat generated by the motor itself. [Explanation of Symbols]

[0023] 100 Range Hood 101 Main frame 200 Blower 201 Motor 202 Fans 203 Fan Casing 203a Bottom surface 203b hole 203c protrusion 204 Flue component 204a Convex part 205 Exhaust port 300 Food 301 Hood exterior components 302 Panel 303 Inner Panel 303a aperture 303b Bottom concave area 303c Bottom convex area 304 Rectifier plate 305 Filter 305a Upper member 305b Lower member 306 Safety Cover 401 Ceiling Mount Bracket 402 Reinforcement fittings 411 Ceiling mounting plate 411a Engagement slit 412 intermediate frames 412a Hook 501 Suspension bolt

Claims

1. A range hood comprising a blower and a hood that guides intake air to the blower, The above-mentioned blower has a cylindrical fan and a fan casing that covers the fan. A range hood characterized in that the rotation axis of the fan is set at an angle inclined by a predetermined angle with respect to the horizontal plane, and the lower portion of the fan casing is formed to have a lower surface between the horizontal plane and the surface inclined by the predetermined angle.

2. A range hood according to claim 1, The above hood comprises an inner panel having an opening that communicates with the inside of the fan casing, and a filter provided in the opening. The inner panel described above has an outer periphery that corresponds to the lower surface of the outer periphery of the hood, and a recessed area that is recessed upward toward the inner periphery, and a convex area that protrudes downward toward the inner periphery. The range hood is characterized in that the filter is attached to the protruding region of the inner panel and is formed to have a portion that protrudes downward from the protruding region.

3. A range hood according to claim 1, A range hood characterized by having an oil drain hole formed at the lowest part of the fan casing.

4. A range hood according to claim 1, A range hood characterized in that recesses and / or protrusions extending in a direction parallel to the rotation axis of the fan are formed on the cylindrical surface of the fan casing.

5. A range hood according to claim 1, A range hood characterized in that it is configured to be attached to suspension bolts hanging from the ceiling by ceiling mounting brackets provided at the four corners of the main frame of the blower and reinforcing brackets attached to at least two opposing sides of the main frame.

6. A range hood according to claim 1, An engagement slit is formed, and a ceiling mounting plate is attached to the ceiling, A range hood characterized by comprising an intermediate frame that is attached to the main body frame of the blower and has a hook that engages with the engagement slit, and is configured to be temporarily hung by the engagement of the engagement slit and the hook.

7. A range hood according to claim 1, A range hood characterized by being configured to rotate the fan after the operation for capturing oil fumes has stopped, while the temperature inside the fan casing has risen.

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