Low-noise type oil smoke exhaust forward centrifugal fan

Abstract

The utility model provides a low noise type oil smoke exhaust forward centrifugal fan, which relates to the technical field of low noise type oil smoke exhaust forward centrifugal fans, and comprises a motor, a fan left shell, a fan right shell, a sound insulation pad and an impeller, clamping grooves are formed in the inner wall of the fan left shell and the inner wall of the fan right shell, the clamping grooves are connected with the side face of the sound insulation pad in a clamped mode, the fan left shell and the fan right shell are connected through bolts, an air outlet is formed in one side of a shell formed by the fan left shell and the fan right shell, an air inlet is formed in the fan right shell, and an air outlet is formed in the other side of the shell. And a dustproof assembly is arranged on the air inlet. According to the device, through cooperation of the partition plates, the sound insulation pads and the buffer pipes, multi-layer noise reduction is achieved, and the use environment is protected; the lampblack can be effectively and preliminarily filtered, and the lampblack is prevented from entering the fan and polluting the interior of the fan, so that the interval time for maintaining the lampblack exhaust fan is prolonged, and the loss of labor force is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to a low -noise type exhaust fume forward centrifugal fan technical field, more specifically, it is particularly related to a low -noise type exhaust fume forward centrifugal fan. BACKGROUND

[0002] Exhaust fume forward centrifugal fan is a centrifugal fan specially designed for removing oil fume, and the blade bending direction is the same as the gas flow direction, which is usually used in kitchen and other places where oil fume needs to be removed.

[0003] Based on the above, the present inventor found that the low -noise type exhaust fume forward centrifugal fan has low efficiency and large noise.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and a low -noise type exhaust fume forward centrifugal fan is provided to achieve the purpose of having more practical value. INVENTION CONTENTS

[0005] The purpose and effect of the low -noise type exhaust fume forward centrifugal fan of the utility model are achieved by the following specific technical means:

[0006] A low -noise type exhaust fume forward centrifugal fan, comprising a motor, a fan left shell, a fan right shell, a sound insulation pad and an impeller, the output end of the motor is provided with an impeller through the fan left shell, the fan left shell and the inner wall of the fan right shell are both provided with a clamping groove, the clamping groove and the side surface of the sound insulation pad are connected, the sound insulation pad does not hinder the contact of the impeller, the fan left shell and the fan right shell are connected through bolts, one side of the shell composed of the fan left shell and the fan right shell is provided with an air outlet, the fan right shell is provided with an air inlet, and the air inlet is provided with a dustproof assembly.

[0007] Further, the dustproof assembly comprises a limiting groove, a handle and a dustproof plate, the limiting groove is arranged on the inner wall of the air inlet, the dustproof plate is connected in the limiting groove, the dustproof plate is provided with a handle on one side, the air inlet is provided with a fixing bolt on one side of the upper end, and the handle and the upper end of the air inlet are connected through the fixing bolt.

[0008] Further, the dustproof plate is a multilayer mesh steel plate.

[0009] Further, the air outlet is connected with a buffer pipe, and the cross-sectional area of the end of the buffer pipe away from the air outlet is greater than the cross-sectional area of the air outlet.

[0010] Further, a partition plate is arranged between the motor and the fan left shell, and the partition plate is a rubber soft pad.

[0011] Further, the sound insulation pad and the clamping groove are interference-fitted.

[0012] Compared with the prior art, the low-noise type exhaust fume forward centrifugal fan has the following beneficial effects:

[0013] When the sound insulation pad needs to be replaced, the fan left shell and the fan right shell can be separated through the bolt, and then the sound insulation pad can be pulled out from the clamping groove, so that the sound insulation pad can be simply replaced, the noise generated in the centrifugal fan can be effectively isolated by the sound insulation pad, the first layer of noise reduction effect of the device is realized, the cross-sectional area of the buffer tube far away from the air outlet is larger than the cross-sectional area of the air outlet, the airflow flowing out of the air outlet can be reduced in speed, high-speed airflow and other connecting parts can be avoided from colliding to generate high noise, the noise pollution of the centrifugal fan in operation can be reduced, the second layer of noise reduction effect of the device is realized, the vibration between the motor and the fan left shell can be decomposed when the device is operated, the noise pollution generated when the device is operated is reduced, the third layer of noise reduction effect of the device is realized, the multi-layer noise reduction of the device is realized through the cooperation of the baffle, the sound insulation pad and the buffer tube, and the use environment is protected, the device has novel overall design and simple structure, and is therefore worthy of wide promotion and use.

[0014] Through the design that the dustproof plate is a multilayer mesh steel plate, oil fumes can be effectively preliminarily filtered, oil fumes can be prevented from entering the fan and polluting the inside of the fan, so that the interval period of maintaining the oil fume exhaust fan is prolonged, and the labor loss is reduced, when the oil stains adhered to the dustproof plate are too much, the fixed effect of the handle on the air inlet can be released by unscrewing the fixing bolt, the dustproof plate can be pulled out from the limiting groove by pulling the handle, so that the dustproof plate can be simply and conveniently cleaned, and user maintenance work is facilitated.

[0015] Through the interference fit connection of the sound insulation pad and the clamping groove, the connection between the sound insulation pad and the clamping groove can be more stable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a low-noise type exhaust fume forward centrifugal fan three-dimensional schematic view.

[0017] Figure 2 is a low-noise type exhaust fume forward centrifugal fan exploded view.

[0018] Figure 3 is a low-noise type exhaust fume forward centrifugal fan dustproof assembly detail schematic view.

[0019] Figure 4 is a low-noise type exhaust fume forward centrifugal fan Figure 2 A place amplification machine schematic view.

[0020] In the figure, the correspondence between the component name and the drawing number is:

[0021] 1, motor; 2, fan left shell; 3, fan right shell; 4, buffer tube; 5, air inlet; 6, partition; 7, air outlet; 9, impeller; 10, sound insulation pad; 11, handle; 12, dustproof plate; 13, limiting groove; 14, fixing bolt; 15, clamping groove. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0023] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Therefore, it cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] As shown in the accompanying Figure 1 to the accompanying Figure 4 As shown:

[0027] The utility model provides a low -noise type oil fume forward centrifugal fan, including motor 1, fan left shell 2, fan right shell 3, sound insulation pad 10 and impeller 9, the output of motor 1 is equipped with impeller 9 through fan left shell 2, fan left shell 2 and fan right shell 3 inner wall all are equipped with clamping groove 15, clamping groove 15 and sound insulation pad 10 side surface clamping connection, sound insulation pad 10 does not hinder impeller 9 and does not contact, fan left shell 2 and fan right shell 3 are connected through bolt, the shell body one side that fan left shell 2 and fan right shell 3 constitute is equipped with air outlet 7, fan right shell 3 is equipped with air inlet 5, air inlet 5 is equipped with dustproof assembly,

[0028] When the sound insulation pad 10 needs to be replaced, the fan left shell 2 can be separated from the fan right shell 3 by bolts, and the sound insulation pad 10 can be pulled out of the clamping groove 15, so that the sound insulation pad 10 can be simply replaced to effectively isolate the noise generated in the centrifugal fan, and the first layer of noise reduction effect of the device is realized.

[0029] The dustproof assembly comprises a limiting groove 13, a handle 11 and a dustproof plate 12, the limiting groove 13 is arranged on the inner wall of the air inlet 5, the dustproof plate 12 is clamped and connected in the limiting groove 13, the handle 11 is arranged on one side of the dustproof plate 12, and the upper end of the air inlet 5 is provided with a fixing bolt 14.

[0030] The dustproof plate 12 is a multi-layer mesh steel plate.

[0031] The design that the dustproof plate 12 is a multi-layer mesh steel plate can effectively preliminarily filter oil fume, avoid the oil fume from entering the fan and polluting the inside of the fan, thereby prolonging the interval period of maintaining the oil fume exhaust fan and reducing the labor loss. When the dustproof plate 12 is polluted too much, the fixing effect of the handle 11 and the air inlet 5 can be released by unscrewing the fixing bolt 14, and then the dustproof plate 12 can be pulled out of the limiting groove 13, so that the dustproof plate 12 can be simply and conveniently cleaned, and the user can conveniently maintain the device.

[0032] The air outlet 7 is connected with a buffer pipe 4, and the cross-sectional area of the end of the buffer pipe 4 away from the air outlet 7 is greater than that of the air outlet 7.

[0033] The design of the buffer pipe 4 and the cross-sectional area of the end of the buffer pipe 4 away from the air outlet 7 being greater than that of the air outlet 7 can reduce the speed of the airflow flowing out of the air outlet 7, thereby avoiding the collision between the high-speed airflow and other connecting parts to generate high noise, reducing the noise pollution during the operation of the centrifugal fan, and realizing the second layer of noise reduction effect of the device.

[0034] The motor 1 and the fan left shell 2 are provided with a partition plate 6, and the partition plate 6 is a rubber soft pad.

[0035] The design of the partition plate 6 and the rubber plate can decompose the vibration between the motor 1 and the fan left shell 2 when the device is operated, thereby reducing the noise pollution generated during the operation of the device and realizing the third layer of noise reduction effect of the device.

[0036] The sound insulation pad 10 is in interference fit with the clamping groove 15.

[0037] Through the interference connection of the sound insulation pad 10 and the clamping groove 15, the sound insulation pad 10 and the clamping groove 15 can be connected more stably.

[0038] The specific use mode and role of the embodiment are as follows:

[0039] First, the integrity of the device is checked, when the sound insulation pad 10 needs to be replaced, the fan left shell 2 and the fan right shell 3 can be separated through the bolt, and then the sound insulation pad 10 can be pulled out of the clamping groove 15, so that the sound insulation pad 10 can be simply replaced, the sound insulation pad 10 can effectively isolate the noise generated in the centrifugal fan, and the first layer of noise reduction effect of the device is realized; through the design of the buffer pipe 4 and the design that the cross-sectional area of the far end of the buffer pipe 4 from the air outlet 7 is greater than the cross-sectional area of the air outlet 7, the airflow flowing out of the air outlet 7 can be reduced in speed, so that the high-speed airflow can be avoided from colliding with other connecting parts to generate high noise, the noise pollution during the operation of the centrifugal fan is reduced, and the second layer of noise reduction effect of the device is realized; through the design of the baffle 6 and the design that the baffle 6 is a rubber plate, when the device operates, the vibration between the motor 1 and the fan left shell 2 can be decomposed, the noise pollution generated during the operation of the device is reduced, and the third layer of noise reduction effect of the device is realized; through the cooperation of the baffle 6, the sound insulation pad 10 and the buffer pipe 4, the multi-layer noise reduction of the device is realized, and the use environment is protected, and the device is novel in overall design and simple in structure, and therefore is worthy of being widely used;

[0040] through the design that the dustproof plate 12 is a multilayer mesh steel plate, oil fume can be effectively preliminarily filtered, oil fume can be avoided from entering the fan and polluting the inside of the fan, so that the interval period of maintaining the oil fume exhaust fan is prolonged, and the labor loss is reduced; when the oil stains adhered to the dustproof plate 12 are too much, the fixed effect of the handle 11 and the air inlet 5 can be released by unscrewing the fixing bolt 14, the dustproof plate 12 can be pulled out of the limiting groove 13 by pulling the handle 11, and therefore the dustproof plate 12 can be simply and conveniently cleaned, and the user is facilitated to maintain the work.

[0041] Through the interference connection of the sound insulation pad 10 and the clamping groove 15, the sound insulation pad 10 and the clamping groove 15 can be connected more stably.

[0042] The embodiments of the utility model are given for the purpose of example and description, and are not exhaustive or limit the utility model to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the utility model, and enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A low-noise type range hood forward centrifugal fan comprising a motor (1), a fan left housing (2), a fan right housing (3), a soundproofing pad (10) and an impeller (9), characterized in that: The output end of the motor (1) is provided with an impeller (9) penetrating through the fan left shell (2), the fan left shell (2) and the inner wall of the fan right shell (3) are both provided with clamping grooves (15), the clamping grooves (15) are connected with the side of the sound insulation pad (10), the sound insulation pad (10) does not hinder the impeller (9) from not contacting, the fan left shell (2) and the fan right shell (3) are connected through bolts, one side of the shell composed of the fan left shell (2) and the fan right shell (3) is provided with an air outlet (7), the fan right shell (3) is provided with an air inlet (5), and the air inlet (5) is provided with a dustproof assembly.

2. The low-noise type range hood forward centrifugal blower according to claim 1, characterized in that: The dustproof assembly comprises a limiting groove (13), a handle (11) and a dustproof plate (12), the limiting groove (13) is arranged on the inner wall of the air inlet (5), the dustproof plate (12) is connected in the limiting groove (13), one side of the dustproof plate (12) is provided with the handle (11), one side of the upper end of the air inlet (5) is provided with a fixing bolt (14), and the handle (11) is connected with the upper end of the air inlet (5) through the fixing bolt (14).

3. The low-noise type range hood forward centrifugal blower according to claim 2, characterized in that: The dustproof plate (12) is a multilayer mesh steel plate.

4. The low-noise type range hood forward centrifugal blower according to claim 3, characterized in that: The air outlet (7) is connected with a buffer pipe (4), and the cross-sectional area of the end of the buffer pipe (4) far away from the air outlet (7) is greater than that of the air outlet (7).

5. The low-noise type range hood forward centrifugal blower according to claim 4, characterized in that: The motor (1) and the fan left shell (2) are provided with a partition plate (6), and the partition plate (6) is a rubber soft pad.

6. The low-noise range hood forward centrifugal fan of claim 5, wherein: The sound insulation pad (10) is interference-fitted with the clamping groove (15).

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