Low-noise large-suction range hood

Abstract

The utility model discloses a low-noise large-suction range hood which comprises a shell, an oil baffle plate is rotatably connected to the front side of the shell, a control panel is arranged on the front side face of the shell above the oil baffle plate, a smoke suction channel is formed in the side face of the shell covered by the oil baffle plate, an oil collecting groove is formed in the bottom of the shell, and a smoke outlet is formed in the bottom of the oil collecting groove. A fan cover is arranged at the top of the machine shell, a volute is arranged in the fan cover, an air outlet in the top of the volute extends out of the fan cover, a check valve communicated with the volute is arranged at the top of the fan cover, a sealing ring is arranged at the joint of the check valve and the volute, and silencing plates are arranged on the periphery of the inner wall of the fan cover. The air suction device is simple in structure and convenient to operate, has strong suction performance of large air volume and air pressure, and also has lower noise.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood with low noise and high suction power. Background Art

[0002] The preparation process of traditional Chinese food culture includes frying, stir-frying, deep-frying, and grilling. A large amount of oil smoke is generated in the process of making food. The oil smoke not only seriously pollutes the kitchen environment, but also causes great harm to the health of kitchen operators who stay in the oil smoke environment for a long time. In severe cases, they may even suffer from cancer. Therefore, range hoods are widely used in kitchens. Range hoods are electrical appliances used in family kitchens to absorb the oil smoke generated during cooking.

[0003] The range hood, also known as the range hood, is a kitchen appliance that purifies the kitchen environment. It is installed above the kitchen stove and can quickly remove the waste from the stove and the fumes that are harmful to the human body generated during cooking, discharge them outdoors, reduce pollution, purify the air, and have anti-toxic and explosion-proof safety protection functions.

[0004] The utility model of Chinese patent application number CN201520806136.1 discloses a range hood with high suction power, including a range hood body, a smoke outlet is provided in the middle of the upper end of the range hood body, a first partition plate and a second partition plate are provided inside the range hood body, the first partition plate and the second partition plate divide the interior of the range hood body into a first channel, a second channel and a third channel, a first exhaust fan is provided in the first channel, a second exhaust fan is provided in the second channel and the third channel, a filter net is provided on the lower ends of the first channel, the second channel and the third channel, and the oil filter net is threadedly connected to the lower ends of the first channel, the second channel and the third channel; large range hoods often have the disadvantage of high noise when pursuing large air volume.

[0005] In this regard, a low-noise, high-suction range hood is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the utility model is to provide a range hood with low noise and high suction power, so as to solve the problems mentioned in the background technology.

[0007] In order to achieve the above object, the technical solution of the utility model is:

[0008] A low-noise, high-suction range hood comprises a casing, an oil baffle plate rotatably connected to the front side of the casing, a control panel is arranged on the front side surface of the casing above the oil baffle plate, a smoking passage is opened on the side surface of the casing covered by the oil baffle plate, an oil collecting trough is arranged at the bottom of the casing, an air hood is arranged at the top of the casing, a volute is arranged inside the air hood, an air outlet at the top of the volute extends to the outside of the air hood, a check valve connected to the volute is arranged at the top of the air hood, a sealing ring is arranged at the connection between the check valve and the volute, and silencer plates are arranged around the inner wall of the air hood.

[0009] Furthermore, air guide plates are arranged on both sides of the inner wall of the casing above the smoking channel, and the two air guide plates are inclined from the inner wall of the casing toward the top of the casing, and the distance between the upper ends of the two air guide plates is smaller than the distance between the lower ends of the two air guide plates.

[0010] Furthermore, a motor is arranged at the center of the interior of the volute, and a first fan blade and a second fan blade are arranged in the volute located outside the motor, the first fan blade and the second fan blade have the same axis, and an oil guide groove connected to the interior of the volute is arranged at the bottom of the volute, and the end of the oil guide groove away from the volute is located directly above the oil collecting tank.

[0011] Furthermore, the sound-absorbing plate includes a sound-absorbing plate body, a sound-absorbing chamber is arranged inside the sound-absorbing plate body, a plurality of first sound-absorbing holes are opened at the top and bottom of the sound-absorbing plate body, a second sound-absorbing hole which is connected with the sound-absorbing chamber is opened at the bottom of each of the first sound-absorbing holes, and the diameter of the first sound-absorbing hole is greater than the diameter of the second sound-absorbing hole.

[0012] Furthermore, the sound-absorbing board body is made of sound-absorbing cotton material.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is provided with two inclined air guide plates on the left and right sides of the inner wall of the casing. When the oil smoke enters the casing from the smoking channel and enters the air hood along the air duct between the two air guide plates, the motor is started, the second fan blade rotates to form negative pressure, the oil smoke enters from the second fan blade and then flows out radially from the second fan blade. The first fan blade rotates to form negative pressure, the oil smoke flowing out radially from the second fan blade enters the first fan blade, and then flows out radially from the first fan blade. Since the first fan blade and the second fan blade both generate negative pressure through rotation, multiple pressurization of the oil smoke is achieved, so that at the same speed, the motor can generate more air volume, and with the two inclined air guide plates, the suction force of the range hood is greater and the smoking effect is better; silencer plates are arranged around the inner wall of the air hood outside the volute, and a check valve is arranged on the air hood on the top of the volute, and a sealing ring is arranged at the connection between the check valve and the volute, which are used together to make the range hood have a certain sound absorption and noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the sound-absorbing plate of the utility model. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation methods.

[0019] like Figure 1-3 As shown, a low-noise and high-suction range hood comprises a casing 2, the front side of the casing 2 is rotatably connected to an oil baffle plate 21, a control panel 23 is arranged on the front side surface of the casing 2 above the oil baffle plate 21, a smoking channel 24 is opened on the side surface of the casing 2 covered by the oil baffle plate 21, an oil collecting trough 22 is arranged at the bottom of the casing 2, a hood 1 is arranged on the top of the casing 2, a volute 12 is arranged inside the hood 1, an air outlet at the top of the volute 12 extends to the outside of the hood 1, a check valve 11 connected to the volute 12 is arranged on the top of the hood 1, a sealing ring 18 is arranged at the connection between the check valve 11 and the volute 12, and silencer plates 17 are arranged around the inner wall of the hood 1.

[0020] Air guide plates 25 are provided on both sides of the inner wall of the casing 2 above the smoking passage 24. The two air guide plates 25 are inclined from the inner wall of the casing 2 to the top of the casing 2, and the distance between the upper ends of the two air guide plates 25 is smaller than the distance between the lower ends of the two air guide plates 25.

[0021] A motor 16 is arranged at the center of the volute 12, and a first fan blade 15 and a second fan blade 14 are arranged in the volute 12 outside the motor 16. The first fan blade 15 and the second fan blade 14 have the same axis. An oil guide groove 13 connected to the inside of the volute 12 is arranged at the bottom of the volute 12, and the end of the oil guide groove 13 away from the volute 12 is located directly above the oil collecting tank 22.

[0022] The sound-absorbing plate 17 includes a sound-absorbing plate body 171, a sound-absorbing chamber 174 is arranged inside the sound-absorbing plate body 171, a plurality of first sound-absorbing holes 172 are opened on the top and bottom of the sound-absorbing plate body 171, and a second sound-absorbing hole 173 which is connected with the sound-absorbing chamber 174 is opened at the bottom of each of the first sound-absorbing holes 172, and the diameter of the first sound-absorbing hole 172 is larger than the diameter of the second sound-absorbing hole 173. During the implementation process, the noise of the range hood during operation is transmitted to the sound-absorbing plate body, and the noise enters the second sound-absorbing hole through the first sound-absorbing hole, and then enters the sound-absorbing chamber. Since the diameter of the second sound-absorbing hole is smaller than the diameter of the first sound-absorbing hole, the noise is absorbed step by step, and the effect of reducing the noise is achieved during the absorption process.

[0023] The sound-absorbing board body 171 is made of sound-absorbing cotton.

[0024] Working principle: two inclined air guide plates are arranged on the left and right sides of the inner wall of the casing. When the oil smoke enters the casing from the smoking channel, it enters the air hood along the air duct between the two air guide plates, the motor starts, the second fan blade rotates to form negative pressure, the oil smoke enters from the second fan blade and then flows out radially from the second fan blade, the first fan blade rotates to form negative pressure, the oil smoke flowing out radially from the second fan blade enters the first fan blade, and then flows out radially from the first fan blade. Since the first fan blade and the second fan blade both generate negative pressure through rotation, multiple pressurization of the oil smoke is achieved, so that at the same speed, the motor can generate more air volume, and with the two inclined air guide plates, the range hood has greater suction and better smoking effect; silencer plates are arranged around the inner wall of the air hood outside the volute, and a check valve is arranged on the air hood on the top of the volute, and a sealing ring is arranged at the connection between the check valve and the volute, which, when used together, make the range hood have a certain sound absorption and noise reduction effect. The utility model has the advantages of simple structure, convenient operation, strong suction performance with large air volume and air pressure, and low noise.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-noise, high-suction range hood, comprising a housing (2), an oil baffle plate (21) rotatably connected to the front side of the housing (2), a control panel (23) being arranged on the front side of the housing (2) above the oil baffle plate (21), a smoking channel (24) being arranged on the side of the housing (2) at the position covered by the oil baffle plate (21), an oil collecting tank (22) being arranged at the bottom of the housing (2), characterized in that: A hood (1) is arranged at the top of the casing (2), a volute (12) is arranged inside the hood (1), an air outlet at the top of the volute (12) extends outside the hood (1), a check valve (11) connected to the volute (12) is arranged at the top of the hood (1), a sealing ring (18) is arranged at the connection between the check valve (11) and the volute (12), and silencer plates (17) are arranged around the inner wall of the hood (1).

2. The low-noise, high-suction range hood according to claim 1, characterized in that: Air guide plates (25) are arranged on both left and right sides of the inner wall of the casing (2) above the smoking passage (24); the two air guide plates (25) are arranged to be inclined from the inner wall of the casing (2) toward the inner top of the casing (2); and the distance between the upper ends of the two air guide plates (25) is smaller than the distance between the lower ends of the two air guide plates (25).

3. The low-noise, high-suction range hood according to claim 1, characterized in that: A motor (16) is arranged at the center of the volute (12), and a first fan blade (15) and a second fan blade (14) are arranged in the volute (12) outside the motor (16), the first fan blade (15) and the second fan blade (14) having the same axis. An oil guide groove (13) connected to the inside of the volute (12) is arranged at the bottom of the volute (12), and an end of the oil guide groove (13) away from the volute (12) is located directly above the oil collecting tank (22).

4. The low-noise, high-suction range hood according to claim 1, characterized in that: The sound-absorbing plate (17) comprises a sound-absorbing plate body (171), a sound-absorbing chamber (174) being arranged inside the sound-absorbing plate body (171), a plurality of first sound-absorbing holes (172) being provided at the top and bottom of the sound-absorbing plate body (171), a second sound-absorbing hole (173) being provided at the bottom of each of the first sound-absorbing holes (172) and being connected to the sound-absorbing chamber (174), and a diameter of the first sound-absorbing hole (172) being greater than a diameter of the second sound-absorbing hole (173).

5. The low-noise, high-suction range hood according to claim 4, characterized in that: The sound-absorbing board body (171) is a sound-absorbing board body made of sound-absorbing cotton.

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