Range hood

Abstract

The utility model provides a range hood. The range hood comprises a fan assembly, an exhaust fume collecting hood and a flow guide part, wherein the fan assembly comprises a centrifugal fan and a mounting body provided with a mounting cavity, an exhaust inlet communicated with the mounting cavity is formed in the bottom of the mounting body, and the centrifugal fan is arranged in the mounting cavity. And the exhaust fume collecting hoods are arranged below the mounting body at intervals. The flow guide piece is installed between the installation body and the exhaust fume collecting hood and provided with a flow guide channel communicating the exhaust fume collecting hood with the exhaust inlet. The fan assembly is installed above the kitchen suspended ceiling, when the centrifugal fan rotates at a high speed, the installation body and the kitchen suspended ceiling can prevent high-speed noise from spreading to the lower portion of the kitchen suspended ceiling, the high-speed noise is kept above the kitchen suspended ceiling and away from human ears, and the experience feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fume purification equipment, in particular to a range hood. Background Art

[0002] The range hood has become one of the indispensable kitchen appliances in modern families. The main function of the range hood is to suck oil fume during cooking, so as to maintain a good kitchen environment. In the prior art, the centrifugal fan of the range hood is arranged in the casing. The high-speed rotation of the centrifugal fan generates a negative air pressure at the inlet of the range hood, sucking the oil fume generated during cooking into the centrifugal fan. The centrifugal fan rotates at high speed to discharge the oil fume to the outside through the upper outlet smoke pipe. However, the noise generated by the high-speed rotation of the centrifugal fan affects the physical and mental health of users. Content of the Utility Model

[0003] Based on this, in view of the problem that the noise generated by the high-speed rotation of the centrifugal fan of the range hood in the prior art affects the physical and mental health of users, it is necessary to provide a range hood.

[0004] Its technical solution is as follows:

[0005] On the one hand, a range hood is provided, including:

[0006] A fan assembly, which includes a centrifugal fan and an installation body provided with an installation cavity. A suction port communicating with the installation cavity is provided at the bottom of the installation body, and the centrifugal fan is arranged in the installation cavity;

[0007] A smoke collecting hood, which is spaced below the installation body;

[0008] A guiding member, which is installed between the installation body and the smoke collecting hood. The guiding member is provided with a guiding channel communicating the smoke collecting hood and the suction port.

[0009] For the range hood in the above embodiment, during use, the smoke collecting hood is installed above the cooking appliance, the fan assembly is installed above the kitchen ceiling, and after the centrifugal fan is communicated with the outdoor environment or the common flue, the guiding member is correspondingly communicated with the smoke collecting hood and the installation body to complete the split installation of the range hood. When the centrifugal fan operates at high speed, both the installation body and the kitchen ceiling can block the propagation of high-speed noise downward from the kitchen ceiling. The high-speed noise is kept above the kitchen ceiling, away from the human ear, improving the user experience. In addition, the installation body adopts downward air intake and is located above the smoke collecting hood and the guiding member, ensuring that the oil fume generated during cooking can smoothly pass through the smoke collecting hood and the guiding member and enter the installation cavity, improving the reliability of the range hood. The centrifugal fan is installed in the installation cavity. When the centrifugal fan rotates at high speed, the surrounding of the centrifugal fan is a negative pressure area, and the installation cavity can quickly collect air flow, improving the oil fume suction effect of the range hood.

[0010] The technical solution will be further described as follows:

[0011] In one embodiment, the centrifugal fan is provided with an air inlet, and at least a part of the air inlet faces the air suction port.

[0012] In one embodiment, the installation body includes a hanging plate, a top plate, and an air cabinet with an installation opening at the top. The hanging plate is fixed to the top of the top plate, the top plate covers the top of the air cabinet to close the installation opening, the top plate and the air cabinet enclose to form the installation cavity, and the air suction port is arranged at the bottom of the air cabinet.

[0013] In one embodiment, the installation body further includes an installation bracket, and the installation bracket is located between the top plate and the centrifugal fan and is fixedly connected to both the top plate and the centrifugal fan.

[0014] In one embodiment, the installation body further includes a fixing member fixed on the outer side wall of the air cabinet. The fixing member is provided with a first fixing hole extending in the vertical direction. The hanging plate is provided with a second fixing hole and an insertion hole that is inserted and matched with the fixing member. The second fixing hole is configured to be aligned with the first fixing hole when the fixing member is inserted and matched with the insertion hole.

[0015] In one embodiment, the centrifugal fan is provided with an air outlet, and an opening communicating with the air outlet is arranged on the outer side wall of the installation body. The range hood further includes a noise reduction component, and the noise reduction component is installed at the opening and is used for reducing the air flow noise.

[0016] In one embodiment, the noise reduction component is provided with an air flow channel and a resonance cavity that are arranged at intervals. The air flow channel communicates with the opening, and air holes communicating with the resonance cavity are arranged on the inner side wall of the air flow channel.

[0017] In one embodiment, the noise reduction component includes a noise reduction body and a cover plate. The noise reduction body is provided with the air flow channel, an air back groove is arranged on the outer wall of the noise reduction body, and the cover plate covers the outer wall of the noise reduction body and encloses with the inner wall of the air back groove to form the resonance cavity.

[0018] In one embodiment, the noise reduction component further includes a first noise reduction member, and the first noise reduction member is located in the resonance cavity and is arranged on the side of the cover plate close to the noise reduction body.

[0019] In one embodiment, the range hood further includes a check valve, and the check valve is installed between the air outlet and the common flue and is used for blocking the air flow in the common flue from entering the centrifugal fan.

[0020] In one embodiment, the flow guide member is provided as a telescopic bellows with a double-layer structure.

[0021] In one embodiment, the range hood further includes a second noise reduction member, and the second noise reduction member is disposed on the inner side wall of the flow guide channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 The structural schematic diagram of a range hood in one embodiment after being installed in a kitchen.

[0025] Figure 2 For Figure 1 the exploded view of the range hood.

[0026] Figure 3 For Figure 2 the cross-sectional view of the fan assembly in

[0027] Figure 4 For Figure 2 the structural schematic diagram of the fan assembly, noise reduction assembly and check valve in

[0028] Figure 5 For Figure 2 the exploded view of the fan assembly, noise reduction assembly and check valve in

[0029] Figure 6 For Figure 2 the partial enlarged view of part A in

[0030] Figure 7 For Figure 2 the exploded view of the noise reduction assembly in

[0031] Description of the reference numerals:

[0032] 10. Range hood; 100. Fan assembly; 110. Installation body; 111. Installation cavity; 112. Air suction port; 113. Hanging plate; 1131. Second fixing hole; 1132. Jack; 114. Top plate; 115. Air cabinet; 1151. Installation opening; 1152. Opening; 116. Installation bracket; 117. Fixing member; 1171. First fixing hole; 120. Centrifugal fan; 121. Air inlet; 122. Air outlet; 200. Smoke collecting hood; 300. Flow guiding member; 310. Flow guiding channel; 400. Noise reduction assembly; 410. Air flow channel; 420. Resonance cavity; 430. Air hole; 440. Noise reduction body; 441. Air back groove; 450. Cover plate; 500. Check valve; 20. Kitchen ceiling; 30. Kitchen wall cabinet; 40. Cooker. Detailed implementation manners

[0033] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, in one embodiment, a range hood 10 is provided, which includes a fan assembly 100, a smoke collecting hood 200 and a flow guiding member 300. Among them, the fan assembly 100 includes a centrifugal fan 120 and an installation body 110 provided with an installation cavity 111. The bottom of the installation body 110 is provided with an air suction port 112 communicating with the installation cavity 111, and the centrifugal fan 120 is arranged in the installation cavity 111. The smoke collecting hood 200 is arranged at an interval below the installation body 110. The flow guiding member 300 is installed between the installation body 110 and the smoke collecting hood 200, and is provided with a flow guiding channel 310 communicating the smoke collecting hood 200 and the air suction port 112.

[0035] For the range hood 10 in the above embodiments, during use, the smoke collecting hood 200 is installed above the cooking appliance 40, the fan assembly 100 is installed above the kitchen ceiling 20, and after the centrifugal fan 120 is correspondingly communicated with the outdoor environment or the common flue, the flow guiding member 300 is then correspondingly communicated with the smoke collecting hood 200 and the installation body 110 to complete the split installation of the range hood 10. When the centrifugal fan 120 operates at a high speed, both the installation body 110 and the kitchen ceiling 20 can block the high-speed noise from spreading downward below the kitchen ceiling 20, and the high-speed noise remains above the kitchen ceiling 20, away from the human ear, improving the user experience. In addition, the installation body 110 adopts downward air intake and is located above the smoke collecting hood 200 and the flow guiding member 300, ensuring that the cooking fumes generated during cooking can smoothly pass through the smoke collecting hood 200 and the flow guiding member 300 and enter the installation cavity 111, improving the reliability of the range hood 10. The centrifugal fan 120 is installed in the installation cavity 111. When the centrifugal fan 120 rotates at a high speed, a negative pressure area exists around the centrifugal fan 120, and the installation cavity 111 can quickly collect the air flow, improving the fume extraction effect of the range hood 10.

[0036] Among them, the smoke collecting hood 200 can be set to any smoke collecting structure in the prior art. In other embodiments, the fan assembly 100 can also be installed in the kitchen wall cabinet 30.

[0037] Such as Figure 3 and Figure 4 As shown, optionally, the centrifugal fan 120 is provided with an air inlet 121, and at least part of the air inlet 121 is directly opposite to the air suction port 112. In this way, the air inlet 121 of the centrifugal fan 120 is arranged directly below, so that the orientation of the air outlet 122 of the centrifugal fan 120 can be flexibly adjusted according to actual use needs, that is, ensuring that the air outlet 122 of the centrifugal fan 120 faces the common flue, improving the practicability of the range hood 10. In addition, the installation body 110 adopts downward air intake, and at least part of the air inlet 121 is directly opposite to the air suction port 112, so that the flow guiding channel 310 can be aligned with the air inlet 121 of the centrifugal fan 120. While ensuring the suction and exhaust efficiency, the generated noise value is also relatively low, improving the user experience.

[0038] It should be noted that at least part of the air inlet 121 being directly opposite to the air suction port 112 means that along the vertical direction, at least part of the projection area of the air inlet 121 coincides with the projection area of the air suction port 112.

[0039] Specifically in this embodiment, the centrifugal fan 120 is horizontally installed in the installation cavity 111. In this way, the height of the installation body 110 is reduced so that it can be installed in the gap between the kitchen ceiling 20 and the kitchen floor slab, improving the practicability of the range hood 10. In other embodiments, the centrifugal fan 120 can also be inclinedly installed in the installation cavity 111.

[0040] Such asFigure 2 and Figure 5 As shown in Figure 5 , in one embodiment, the installation body 110 includes a hanging plate 113, a top plate 114, and an air cabinet 115 with an installation opening 1151 at the top. The hanging plate 113 is fixed to the top of the top plate 114, and the top plate 114 covers the top of the air cabinet 115 to close the installation opening 1151. The top plate 114 and the air cabinet 115 enclose an installation cavity 111, and the air suction port 112 is provided at the bottom of the air cabinet 115.

[0041] As Figure 3 and Figure 5 shown in Figure 5 , optionally, the installation body 110 further includes an installation bracket 116. The installation bracket 116 is located between the top plate 114 and the centrifugal fan 120 and is fixedly connected to both the top plate 114 and the centrifugal fan 120. In this way, the centrifugal fan 120 is suspended in the installation cavity 111 through the installation bracket 116, and the air flow in the installation cavity 111 can enter from both the upper and lower sides of the centrifugal fan 120, increasing the air suction efficiency of the centrifugal fan 120 and improving the oil fume suction effect of the range hood 10.

[0042] Among them, the number of the installation brackets 116 can be flexibly adjusted according to actual usage needs. Specifically in this embodiment, the hanging plate 113 and the top plate 114, and the top plate 114 and the air cabinet 115 are fixedly connected by screws. The number of the installation brackets 116 is two. The centrifugal fan 120 includes a volute. The two installation brackets 116 are respectively fixed on the opposite sides of the top of the volute by screws. The two installation brackets 116 are both fixed on the top plate 114 by screws. A flange is provided at the air outlet 122 of the volute, and the flange is fixed to the inner side wall of the installation cavity 111 by screws. In this way, it is ensured that the fan assembly 100 will not become loose during long-term operation, improving the reliability of the range hood 10.

[0043] As Figure 2 , Figure 4 and Figure 6 shown in Figure 6 , the installation body 110 further includes a fixing member 117 fixed on the outer side wall of the air cabinet 115. The fixing member 117 is provided with a first fixing hole 1171 extending in the vertical direction. The hanging plate 113 is provided with a second fixing hole 1131 and a jack 1132 that is inserted and matched with the fixing member 117. The second fixing hole 1131 is configured to align with the first fixing hole 1171 when the fixing member 117 is inserted and matched with the jack 1132. In this way, when it is necessary to install and fix the fan assembly 100, an explosive screw can be used to pass through the second fixing hole 1131 and the first fixing hole 1171 and be fixed on the kitchen floor slab, realizing the installation and fixation of the fan assembly 100 and improving the convenience of assembling the range hood 10.

[0044] Among them, the number of the fixing members 117, the number of the insertion holes 1132, the number of the first fixing holes 1171, and the number of the second fixing holes 1131 can all be flexibly adjusted according to actual usage requirements. Specifically in this embodiment, the fixing members 117 are provided as bent brackets, and the number of the bent brackets, the number of the insertion holes 1132, the number of the first fixing holes 1171, and the number of the second fixing holes 1131 are all four. The four bent brackets are respectively fixed on two opposite outer side walls of the air cabinet 115 by screws and are correspondingly inserted and matched with the four insertion holes 1132. The four second fixing holes 1131 are all provided as waist-shaped holes and are correspondingly arranged with the four first fixing holes 1171.

[0045] As Figure 2 and Figure 5 shown, in one embodiment, the centrifugal fan 120 is provided with an air outlet 122, and an opening 1152 communicating with the air outlet 122 is provided on the outer side wall of the installation body 110. The range hood 10 further includes a noise reduction component 400, and the noise reduction component 400 is installed at the opening 1152 and is used for reducing the air flow noise. In this way, when the centrifugal fan 120 runs at a high speed, the air flow passes through the centrifugal fan 120 at an extremely fast speed and is discharged from the air outlet 122, and the noise reduction component 400 is installed at the air outlet 122 to effectively reduce the air flow noise generated when the air flow passes through, thereby improving the user experience.

[0046] Among them, the noise reduction component 400 can be set as any noise reduction structure in the prior art. Specifically in this embodiment, the noise reduction component 400 can be set as a coaxial resonance cavity muffler.

[0047] As Figure 5 and Figure 7 shown, further, the noise reduction component 400 is provided with an air flow channel 410 and a resonance cavity 420 which are arranged at intervals. The air flow channel 410 is communicated with the opening 1152, and air holes 430 communicating with the resonance cavity 420 are provided on the inner side wall of the air flow channel 410. In this way, when the frequency of the incident sound wave is the same as the natural frequency of the noise reduction component 400, the whole noise reduction component 400 will resonate, and the air column will vibrate violently back and forth, thereby realizing the dissipation of sound energy and reducing the noise of the range hood 10.

[0048] Among them, the number of the resonance cavities 420 and the number of the air holes 430 can both be flexibly adjusted according to actual usage requirements. Specifically in this embodiment, the number of the resonance cavities 420 is two, and the two resonance cavities 420 are respectively located on opposite sides of the air flow channel 410. The air flow channel 410 and the resonance cavity 420 are communicated through a plurality of air holes 430 arranged in a rectangular array.

[0049] As Figure 7As shown, optionally, the noise reduction component 400 includes a noise reduction body 440 and a cover plate 450. The noise reduction body 440 is provided with an air flow channel 410. An air back groove 441 is provided on the outer wall of the noise reduction body 440. The cover plate 450 is covered on the outer wall of the noise reduction body 440 and encloses a resonance cavity 420 with the inner wall of the air back groove 441. In this way, the manufacturing and assembly of the noise reduction component 400 can be achieved without changing the cross-sectional area of the air flow channel 410.

[0050] Optionally, the noise reduction component 400 further includes a first noise reduction member, and the first noise reduction member is located in the resonance cavity 420. The first noise reduction member is disposed on the side of the cover plate 450 close to the noise reduction body 440. In this way, the first noise reduction member can reduce medium and high frequency noise and improve the user experience.

[0051] Specifically in this embodiment, the first noise reduction member can be set as sound-absorbing cotton, and the sound-absorbing cotton is pasted on the side of the cover plate 450 close to the noise reduction body 440. In other embodiments, sound-absorbing cotton can also be pasted on the inner side wall of the air back groove 441. The first noise reduction member can also be set as flexible noise reduction powder (such as flexible powder similar to environmentally friendly resin).

[0052] As Figure 2 and Figure 5 shown, in one embodiment, the range hood 10 further includes a check valve 500. The check valve 500 is installed between the air outlet 122 and the common flue and is used to block the air flow in the common flue from entering the centrifugal fan 120. In this way, the check valve 500 can block the oil fume and odor in the common flue from entering the kitchen and improve the user experience.

[0053] Specifically in this embodiment, the noise reduction body 440 is fixed on the outer side wall of the air cabinet 115 by screws, so that the air flow channel 410 can be kept in communication with the opening 1152. One end of the check valve 500 is correspondingly communicated with the noise reduction body 440, and the other end is communicated with the common flue through a telescopic range hood.

[0054] Among them, the flow guiding member 300 can be set as a connecting hose, a corrugated pipe, a telescopic pipe or other flow guiding structures capable of conveying air flow.

[0055] In one embodiment, the flow guiding member 300 is set as a telescopic corrugated pipe with a double-layer structure. In this way, the double-layer design can isolate the noise generated by the air flow in the flow guiding channel 310 and improve the user experience.

[0056] Among them, the double layers in the telescopic corrugated pipe can be equally folded to achieve telescoping.

[0057] Optionally, the range hood 10 further includes a second noise reduction member, and the second noise reduction member is disposed on the inner side wall of the flow guiding channel 310. In this way, when the air flow passes through the flow guiding channel 310, the sound wave will be absorbed by the second noise reduction member, improving the user experience.

[0058] Specifically in this embodiment, the second noise reduction member can be set as a flexible noise reduction powder, and the flexible noise reduction powder is sprayed on the inner side wall of the diversion channel 310. In other embodiments, the second noise reduction member can be set as a sound-absorbing cotton, and the sound-absorbing cotton is pasted on the inner side wall of the diversion channel 310.

[0059] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0060] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0062] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or similar descriptions, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0063] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0064] It should also be understood that when interpreting the connection relationship or position relationship of elements, although not explicitly described, the connection relationship and position relationship are interpreted to include an error range, and this error range should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "about", "approximately" or "substantially" may mean within one or more standard deviations, which are not defined herein.

[0065] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0066] The above embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this patent application should be subject to the appended claims.

Claims

1. A range hood, characterized in that: include: A fan assembly (100), comprising a centrifugal fan (120) and a mounting body (110) provided with a mounting cavity (111), wherein a suction port (112) communicating with the mounting cavity (111) is provided at the bottom of the mounting body (110), and the centrifugal fan (120) is arranged in the mounting cavity (111); A smoke collecting hood (200) disposed at a distance below the mounting body (110); A flow guide member (300) is installed between the installation body (110) and the smoke collecting hood (200), and the flow guide member (300) is provided with a flow guide channel (310) connecting the smoke collecting hood (200) and the air suction port (112).

2. The range hood according to claim 1, characterized in that: The centrifugal fan (120) is provided with an air inlet (121), and the air inlet (121) is at least partially opposite to the air suction port (112).

3. The range hood according to claim 1, characterized in that: The installation body (110) comprises a hanging plate (113), a top plate (114), and a wind cabinet (115) with a mounting opening (1151) on the top, the hanging plate (113) being fixed to the top of the top plate (114), the top plate (114) being covered on the top of the wind cabinet (115) to close the mounting opening (1151), the top plate (114) and the wind cabinet (115) being arranged to form the installation cavity (111), and the air intake port (112) being arranged at the bottom of the wind cabinet (115).

4. The range hood according to claim 3, characterized in that: The mounting body (110) further comprises a mounting bracket (116), wherein the mounting bracket (116) is located between the top plate (114) and the centrifugal fan (120), and is fixedly connected to both the top plate (114) and the centrifugal fan (120).

5. The range hood according to claim 3, characterized in that: The mounting body (110) further comprises a fixing member (117) fixed to an outer side wall of the wind cabinet (115), the fixing member (117) being provided with a first fixing hole (1171) extending in a vertical direction, the hanging plate (113) being provided with a second fixing hole (1131) and a plug hole (1132) pluggably engaged with the fixing member (117), the second fixing hole (1131) being configured to be aligned with the first fixing hole (1171) when the fixing member (117) is pluggably engaged with the plug hole (1132).

6. The range hood according to claim 1, characterized in that: The centrifugal fan (120) is provided with an air outlet (122); the outer wall of the mounting body (110) is provided with an opening (1152) in communication with the air outlet (122); the range hood (10) further comprises a noise reduction component (400); the noise reduction component (400) is installed at the opening (1152) and is used to reduce airflow noise.

7. The range hood according to claim 6, characterized in that: The noise reduction component (400) is provided with an airflow channel (410) and a resonance cavity (420) which are arranged at intervals from each other, the airflow channel (410) is in communication with the opening (1152), and the inner side wall of the airflow channel (410) is provided with an air hole (430) in communication with the resonance cavity (420).

8. The range hood according to claim 7, characterized in that: The noise reduction component (400) comprises a noise reduction body (440) and a cover plate (450); the noise reduction body (440) is provided with the air flow channel (410); the outer wall of the noise reduction body (440) is provided with an air back groove (441); the cover plate (450) is covered on the outer wall of the noise reduction body (440) and is surrounded by the inner wall of the air back groove (441) to form the resonance cavity (420).

9. The range hood according to claim 8, characterized in that: The noise reduction component (400) further comprises a first noise reduction component, which is located in the resonance cavity (420) and is arranged on a side of the cover plate (450) close to the noise reduction body (440).

10. The range hood according to claim 6, characterized in that: The range hood (10) further comprises a check valve (500), wherein the check valve (500) is installed between the air outlet (122) and the common flue and is used to prevent the airflow in the common flue from entering the centrifugal fan (120).

11. The range hood according to any one of claims 1 to 10, characterized in that: The flow guide (300) is configured as a telescopic bellows having a double-layer structure.

12. The range hood according to any one of claims 1 to 10, characterized in that: The range hood (10) further comprises a second noise reduction component, wherein the second noise reduction component is arranged on the inner side wall of the guide channel (310).

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