CN207865497U - A kind of range hood - Google Patents

Abstract

The utility model relates to the technical field of kitchen utensils, in particular to a range hood. The present application provides a range hood, which includes a box assembly and a sound-absorbing assembly inside the box assembly. The angle between the straightly disposed side walls may range from 20° to 60°. With the range hood provided by this application, by setting the noise reduction assembly at the corner of the box assembly and inclined at an angle to the corner of the box assembly, the smoke in the hood can be silenced and noise-reduced at the same time. The diversion effect of flue gas is beneficial to improve the effect of oil absorption fume. Also preferably, the angle range between the sound-absorbing component and the vertically disposed side wall of the box component is between 20° and 60°, which is more conducive to flow guidance and sound absorption. In addition, the range hood provided by the present application has a simple structure and a simple processing technology, which is beneficial to reduce production costs and has strong practicability.

Description

a range hood

technical field

The utility model relates to the technical field of kitchen utensils, in particular to a range hood.

Background technique

The range hood includes a box body and a fan assembly arranged in the box body, and the fan unit is driven by a motor to suck out the oil fumes in the range hood. Fans, motors and airflow are important sources of noise. Among them, aerodynamic noise includes eddy currents entering the cabinet, radiation noise to the outlet of the volute, and reverberation noise inside the range hood.

Generally, aerodynamic methods are used to optimize the centrifugal fan and volute, or a low-noise motor is used, or sound-insulating or sound-absorbing materials are used. Although the above-mentioned various passive noise reduction methods can also reduce noise, they have a single function, and often reduce the exhaust air volume of the range hood while reducing noise, and also affect the vibration noise of the outer wall of the range hood. No noise reduction effect is obtained, thus, the stability and effectiveness of the above noise reduction method are not good.

Utility model content

(1) Technical problems to be solved

The purpose of this utility model is: to provide a range hood with simple structure, reasonable design, and can effectively achieve the effect of noise reduction and noise reduction while improving the intake efficiency, so as to solve the existing noise reduction method to reduce the noise of the range hood. Noise reduction is achieved at the expense of exhaust air volume and the problem of single noise reduction functionality.

(2) Technical solutions

In order to solve the above technical problems, the utility model provides a range hood, which includes a box assembly and a sound-absorbing assembly arranged in the box assembly, and the sound-absorbing assembly is at an angle to the corner of the box assembly Inclined arrangement; wherein, the range of the angle between the sound-absorbing assembly and the vertically-arranged side wall of the box assembly includes 20° to 60°.

With the range hood provided by the present application, by setting the sound-absorbing assembly at the corner of the box assembly and inclined at an angle to the corner of the box assembly, it is possible to silence and reduce the noise of the flue gas in the hood and at the same time achieve noise reduction. The diversion effect of flue gas is beneficial to improve the effect of oil absorption fume. Also preferably, the angle range between the sound-absorbing component and the vertically disposed side wall of the box component is between 20° and 60°, which is more conducive to flow guidance and sound absorption.

Preferably, the range of the angle between the sound-absorbing component and the vertically disposed side wall of the box component is 30° to 40°, which can achieve the best air guiding and sound-absorbing effects.

Further, it also includes a fan assembly arranged in the box assembly, the fan assembly includes a vertically arranged volute, and the sound-absorbing assembly is arranged in the box assembly corresponding to the air inlet of the volute Inside.

The volute is set up vertically, with direct suction and direct discharge, so that the resistance of the smoke flowing out of the volute is small, which optimizes the noise of the whole machine, and can also reduce the loss of air volume and wind pressure, which is beneficial to the improvement of the oil suction effect and the reduction of the directional radiation of the fan outlet noise. ; and the noise reduction component is arranged corresponding to the air inlet of the volute, so as to effectively eliminate the noise and reverberation noise generated by the gas vortex in the range hood, and further optimize the noise reduction effect of the whole machine.

Preferably, the sound-absorbing assembly includes a rectifying plate and a sound-absorbing material layer disposed on the rectifying plate, the rectifying plate is provided with a plurality of sound-absorbing holes, and the sound-absorbing material layer covers the plurality of sound-absorbing holes.

The sound-absorbing assembly provided by the present application has a simple structure and a reasonable design, and can achieve a diversion effect on the smoke while reducing the noise in the smoke machine, which is beneficial to improving the effect of oil suction. In particular, when the airflow passes through the rectifying plate of the sound-absorbing assembly, the airflow resistance can be effectively reduced, thereby improving the air intake efficiency, which is beneficial to improving the oil-absorbing fume effect of the range hood.

Preferably, the box assembly includes a casing and a frame connected to the casing and positioned above the casing; the lower end of the volute is located in the casing, and the upper end of the volute is at least A part protrudes from the casing and the part protruding from the casing is located in the frame; the front plate of the volute is provided with the air inlet, and the sound-absorbing assembly is inclined corresponding to the air inlet Down at the corner of the rack.

The range hood adopting the above-mentioned structural form has a simple structure and a reasonable design; and the box assembly includes a casing and a frame, so that the volute can be vertically arranged in the box assembly in a semi-embedded manner, and the smoke suction and discharge resistance is small , effectively reducing the loss of air volume and air pressure, and greatly improving the effect of oil suction. In addition, by setting the sound-absorbing assembly obliquely downward, the noise radiated to the sound-absorbing assembly can be weakened, thereby effectively avoiding the formation of the reverberation cavity inside the hood, so as to optimize the noise of the whole machine.

Preferably, at least one fixing hole is provided on the edge of the sound-absorbing assembly, and the frame is provided with a mounting hole corresponding to the fixing hole, and the sound-absorbing assembly passes through the fixing hole and the mounting hole sequentially through fasteners, In order to realize its fixed connection with the frame, the structure is simple, the installation is easy and the fixing effect is good.

Preferably, the frame includes a frame structure with a bottom opening formed by a front board, a rear board, a left board, a right board and a top board, and the top board, the front board, the left board, and the right board are all provided with the installation holes, so The surrounding edges of the rectifying plate are provided with the fixing holes corresponding to the mounting holes, and after being connected, the sound-absorbing assembly and the frame form a triangular fixed rectifying structure.

In this way, by forming a triangular fixed rectification structure between the noise reduction component and the frame, it is beneficial to strengthen the thin-wall strength around the frame, and effectively avoid the thin-wall vibration of the frame caused by the vibration transmitted by the fan assembly including the volute. Vibration and noise optimization is obvious and the overall strength of the rack is high.

Preferably, the connection mode between the sound-absorbing material layer and the rectifying plate is bonding, clamping or threaded connection, so that there is no relative displacement between the sound-absorbing material layer and the rectifying plate, so as to ensure the overall structural integrity of the sound-absorbing assembly, which is beneficial to ensure Noise reduction and rectification effect.

Preferably, the outer surface of the rectifying plate on the side away from the sound-absorbing material layer is an arc-shaped surface, which cooperates with the sound-absorbing material layer to further improve the rectifying effect, thereby reducing the noise value well and optimizing the noise of the whole machine .

Preferably, the sound-absorbing material layer includes a mixture of sound-absorbing cotton and fiber cloth and/or a mixture of sponge, non-woven fabric and resin, which has a simple structure, easy molding, low price and good sound-absorbing effect.

(3) Beneficial effects

The above-mentioned technical scheme of the utility model has the following advantages:

The utility model provides a range hood, which comprises a box assembly and a sound-absorbing assembly arranged in the box assembly, and the corner of the sound-absorbing assembly and the box assembly is inclined at an angle; The angle range between the vertically arranged side walls includes 20° to 60°. With the range hood provided by the present application, by setting the sound-absorbing assembly at the corner of the box assembly and inclined at an angle to the corner of the box assembly, it is possible to silence and reduce the noise of the flue gas in the hood and at the same time achieve noise reduction. The diversion effect of flue gas is beneficial to improve the effect of oil absorption fume. Also preferably, the angle range between the sound-absorbing component and the vertically disposed side wall of the box component is between 20° and 60°, which is more conducive to flow guidance and sound absorption. In addition, the range hood provided by the utility model has a simple structure, a reasonable design, and a simple processing technology, which is beneficial to reduce production costs, has strong practicability, and is beneficial to standardized production and popularization.

In addition to the technical problems solved by the utility model described above, the technical features of the technical solutions formed and the advantages brought by the technical features of these technical solutions, other technical features of the utility model and the advantages brought by these technical features The advantages will be further described in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of the installation method of the silencer assembly and the frame of a range hood embodiment of the present invention;

Fig. 2 is a schematic diagram of the overall structure of the range hood of the embodiment of a range hood of the present invention;

Fig. 3 is a schematic structural view of a range hood not including an air inlet front-end assembly according to an embodiment of a range hood of the present invention;

Fig. 4 is a rear view of a range hood embodiment of a range hood of the present invention;

Fig. 5 is a schematic cross-sectional view of I-I in Fig. 4 .

Fig. 6 is a front view of a box assembly of a range hood embodiment of the present invention;

Fig. 7 is a schematic cross-sectional view of X-X in Fig. 6;

FIG. 8 is a schematic cross-sectional view of Y-Y in FIG. 6 .

In the figure: 200: range hood; 201: check valve; 211: frame; 2112: mounting hole on the top plate; 2113: mounting hole on the left plate; 2114: mounting hole on the front plate; 212: casing; 2121: left plate ;2122: right side panel; 2123: back panel; 221: deflector assembly; 222: upper condensing plate; 223: lower condensing plate; 231: volute; 2311: first air inlet; 2312: second air inlet 232: impeller; 233: motor; 235: air inlet ring; 250: muffler assembly; 251: rectifying plate; 2511: fixing hole on the right side; 2512: fixing hole on the top plate; 2513: fixing hole on the left side; 2514: front side Fixing hole; 252: sound-absorbing material layer; 260: flue gas flow direction; 271: circumferential rectifying plate.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that, in the following embodiments, the location words such as front, back, left, right, up, and down are all marked as the left side where the left-hand side is located when the user is facing the range hood, and the right side is marked where the right-hand side is located. Correspondingly, the side close to the user is marked as front, and the side away from the user is marked as back; the side close to the ground is marked as down, and the side far from the ground is marked as up.

As shown in Figures 1 to 8, the utility model provides a range hood 200, which includes a box assembly and a sound-absorbing assembly 250 disposed in the box assembly, and the sound-absorbing assembly 250 forms an angle with the corner in the box assembly Inclined setting; wherein, the range of the angle between the sound-absorbing assembly 250 and the vertically-arranged side wall of the box assembly includes 20° to 60°.

The range hood 200 adopting the above-mentioned structural form can suppress the smoke in the hood by providing the sound-absorbing assembly 250 and setting the sound-absorbing assembly 250 at the corner of the box assembly and inclined at an angle to the corner of the box assembly. While performing noise reduction and noise reduction, the flue gas diversion effect is realized, which is beneficial to improving the oil suction fume effect. Also preferably, the angle range between the sound-absorbing assembly 250 and the vertically disposed side wall of the box assembly is between 20° and 60°, which is more conducive to flow guidance and sound absorption. Wherein, the angle between the sound-absorbing assembly 250 and the vertically arranged side wall of the box assembly preferably adopts any angle value between 20° and 60°, which can be reasonably selected and set according to actual implementation conditions. It only needs to meet the conditions of achieving an effective diversion effect while realizing noise reduction and noise reduction.

In addition, the range hood provided by the utility model has a simple structure, a reasonable design, and a simple processing technology, which is beneficial to reduce production costs, has strong practicability, and is beneficial to standardized production and popularization.

Preferably, the range of the angle between the sound-absorbing assembly 250 and the vertically disposed side wall of the box assembly includes 30° to 40°.

Further preferably, the angle between the sound-absorbing assembly 250 and the vertically disposed side wall of the box assembly is limited to 30° to 40°, so as to obtain the best air guiding and sound-absorbing effects. Wherein, the angle between the sound-absorbing assembly 250 and the vertically arranged side wall of the box assembly preferably adopts any angle value between 30° and 40°, which can be reasonably selected and set according to actual implementation conditions. It only needs to meet the conditions of achieving an effective diversion effect while realizing noise reduction and noise reduction.

Further, the range hood 200 provided by the present application also includes a fan assembly arranged in the box assembly, the fan assembly includes a vertically arranged volute 231, and the noise reduction assembly 250 is provided in the box corresponding to the air inlet of the volute 231 within the component.

Generally, the flue gas entering the air inlet of the volute 231 is easy to form a vortex in the box assembly, especially at the right-angled corner of the top of the box assembly. The existence of the eddy current will cause the loss of air volume, wind pressure and noise. The rise of the hood, and the inside of the box assembly is a smooth closed plane, it is easy to form a reverberation cavity inside the box assembly, which makes the inside of the hood roar. By arranging the sound absorbing assembly 250 in the above technical solution corresponding to the air inlet of the volute 231 in the box assembly, the noise generated by the gas vortex in the range hood 200 can be effectively eliminated through the sound absorbing material layer 252 of the sound absorbing assembly 250 and reverberation noise; at the same time, when the airflow passes through the rectifying plate 251 of the sound-absorbing assembly 250, the airflow resistance can be effectively reduced, thereby improving the air intake efficiency, which is beneficial to improving the range hood 200's smoke absorption effect. Wherein, the path of the flue gas flow 260 is specifically referred to in FIG. 2 , FIG. 4 and FIG. 5 .

In addition, the volute 231 is placed vertically in the range hood 200 for direct suction and direct exhaust, so that the resistance of the smoke flowing out of the volute 231 is small, and at the same time, the central axis of the motor 233 of the fan assembly is set horizontally, which can reduce the air volume and wind pressure loss , which is beneficial to reduce the directional radiation of the fan tuyere noise.

Preferably, the sound-absorbing assembly 250 includes a rectifying plate and a sound-absorbing material layer 252 disposed on the rectifying plate. The rectifying plate 251 is provided with a plurality of sound-absorbing holes, and the sound-absorbing material layer 252 covers the sound-absorbing holes.

This application adopts a sound-absorbing assembly 250 composed of a rectifying plate 251 and a sound-absorbing material layer 252. By covering a plurality of sound-absorbing holes on the rectifying plate 251 with the sound-absorbing material layer 252, the noise generated by the gas vortex in the range hood can be effectively eliminated. , radiated noise and reverberation noise; at the same time, when the airflow passes through the rectifying plate 251 of the sound-absorbing assembly 250, the airflow resistance can be effectively reduced, thereby improving the air intake efficiency, which is beneficial to improving the range hood's smoke absorption effect. Therefore, the sound-absorbing assembly 250 provided in the present application can achieve the effect of diverting the smoke while reducing the noise of the smoke in the range hood, which is beneficial to improve the effect of oil suction.

In addition, the silencer assembly 250 provided by the utility model has simple structure, reasonable design, simple processing technology, low production cost and strong practicability, which is beneficial to standardized production and popularization.

Preferably, the box assembly includes a casing 212 and a frame 211 connected to the casing 212 and positioned above the casing 212, the lower end of the volute 231 is located in the casing 212, and the upper end of the volute 231 is at least partly protruded from the casing 212 , and the part protruding from the casing 212 is located in the frame 211 , the front plate of the volute 231 is provided with an air inlet, and the noise reduction assembly 250 is corresponding to the air inlet and is arranged at the corner of the frame 211 obliquely downward.

The present application provides a box assembly including a casing 212 and a frame 211, so that the volute 231 can be vertically arranged in the box assembly in a semi-embedded manner, and the resistance of the smoke to flow out of the volute 231 is small. On the one hand, it is beneficial Reduce the outlet loss of the volute 231, and further optimize the noise of the whole machine. On the other hand, the central axis of the fan motor 233 is set horizontally, which can also avoid the loss of air volume and air pressure caused by the small box space, and can help overcome the larger Pipeline back pressure is conducive to improving the effect of oil absorption. Further, by setting the sound-absorbing assembly 250 obliquely downward, the noise radiated to the sound-absorbing assembly 250 can be weakened, thereby effectively avoiding the formation of a reverberation cavity inside the cigarette machine, so as to optimize the noise of the whole machine.

Preferably, the edge of the noise reduction assembly 250 is provided with at least one fixing hole, and the frame is provided with a mounting hole corresponding to the fixing hole, and the noise reduction assembly 250 passes through the fixing hole and the mounting hole sequentially through fasteners to realize its fixed connection with the frame .

During installation, the noise reduction assembly 250 passes through the fixing holes provided on the rectifying plate 251 and passes through the fasteners to be fixedly installed on the range hood. Wherein, the fasteners may be screws, bolts, nuts or rivets, etc., and a reasonable type of fasteners may be selected according to actual implementation conditions.

In order to facilitate fixing and installation, in this embodiment, the rectifying plate 251 is preferably a rectangular structural member, and several fixing holes are provided on the four sides of the rectifying plate 251, and the fixing holes are penetrated by screws and fixed with the range hood connect. Wherein, the number of fixing holes can be reasonably selected according to actual implementation conditions such as the size of the actual rectifying plate 251 and the size of the range hood. The structure is simple, the installation is convenient and the fixing effect is good.

Preferably, the frame 211 includes a frame structure with a bottom opening formed by a front plate, a rear plate, a left plate, a right plate and a top plate. A fixing hole is provided corresponding to the mounting hole, and after being connected, the sound-absorbing assembly 250 and the frame 211 form a triangular fixed rectification structure.

In this embodiment, the frame 211 is a square frame structure with an open bottom, and the top plate mounting hole 2112 matching the top plate fixing hole 2512 in the noise reduction assembly 250 is provided on the top plate of the frame. The left plate installation hole 2113 matched with the left side fixing hole 2513 in the assembly 250, the front plate of the frame is provided with the front plate installation hole 2114 matched with the front side fixing hole 2514 in the noise reduction assembly 250, symmetrical, in the frame 211 The right plate is also provided with a right plate mounting hole matched with the right fixing hole 2511 in the silencer assembly 250. The above mounting hole is set correspondingly to the fixing hole on the rectifying plate 251 in the silencer assembly 250, and can be mounted by bolts or screws or The rivets pass through the installation holes and the fixing holes in order to realize the fixed connection between the noise reduction assembly 250 and the frame 211 and form a triangular fixed rectification structure. This structure strengthens the thin-wall strength around the frame 211, effectively avoids the thin-wall vibration of the frame 211 caused by the vibration of the fan assembly including the volute 231, the vibration noise is significantly optimized, and the overall strength of the frame 211 is high .

The noise reduction assembly 250 is located inside the frame 211 and on the front side of the air inlet of the volute 231. The noise reduction assembly 250 and the frame 211 form a triangular fixed rectification structure. This structure forms a diversion slope to avoid entering the front side of the volute 231. The flue gas from the air inlet forms a vortex at the right angle formed by the front plate of the frame 211 and the top plate of the frame 211, which is beneficial to optimize the noise of the whole machine.

Preferably, the blower assembly also includes an impeller 232 located in the volute 231, a motor 233 coaxially connected with the impeller 232, and a check valve 201 installed at the outlet of the air outlet passage of the volute 231, the check valve 201 and the frame 211 fixed connection.

In this embodiment, the blower assembly includes a volute 231, an impeller 232 disposed in the volute 231, a motor 233 coaxially connected with the impeller 232, and a check valve 201. The motor 233 drives the impeller 232 to rotate, so that the inside of the volute 231 In a negative pressure state, the flue gas is sucked into the inlet of the volute 231 respectively, and passes through the inlet passages inside the volute 231 respectively, and finally is discharged through the outlet passage and the check valve 201. The structure is simple, the design is reasonable, and the direct suction Straight row, and the production process is simple, which is beneficial to reduce production costs.

Further, the range hood 200 provided in this embodiment may also include an air intake front assembly disposed on the casing 212, the air intake front assembly includes a deflector assembly 221 and a condensation plate rotatably connected to the deflector assembly 221 components. Wherein, the condensing plate assembly includes an upper condensing plate 222 and a lower condensing plate 223, and the upper condensing plate 222 is rotatably connected with the deflector assembly 221 through fasteners to open or cover the air inlet of the deflector assembly 221, and can The opening of the air inlet is adjusted accordingly according to actual needs; the lower condensation plate 223 is covered on the lower part of the deflector assembly 221, which is beneficial to improve the oil fume separation rate.

It should be noted that, in addition to the air inlet on the front panel of the volute 231 , the rear panel of the volute 231 may also be provided with an air inlet to form a range hood with a double air inlet structure. Specifically, the air inlet provided on the front plate of the volute 231 is marked as the first air inlet 2311 , and the air inlet provided on the rear plate of the volute 231 is marked as the second air inlet 2312 .

Specifically, the casing 212 includes a left side plate 2121, a right side plate 2122, and a middle plate for connecting the left side plate 2121 and the right side plate 2122, wherein the middle plate includes a back plate 2123; For the rectification effect in the hood, a circumferential rectifying plate 271 is installed inside the casing 212 corresponding to the first air inlet 2311 and the second air inlet 2312 of the volute 231, and the first air inlet of the volute 231 2311 is provided with an air inlet ring 235, and the air inlet ring 235 is used to fix the rectifying plate 271.

By providing the above-mentioned sound-absorbing assembly 250, and the sound-absorbing assembly 250 is located inside the frame, on the front side of the air inlet of the volute 231, the sound-absorbing assembly 250 and the frame form a triangular fixed rectification structure, which forms a guide slope, Avoid the flue gas entering the front air inlet and the rear air inlet of the volute 231 to form a vortex at the right angle formed by the front plate of the frame and the top plate of the frame, thereby helping to optimize the noise of the whole machine.

Preferably, the connection mode between the sound-absorbing material layer 252 and the rectifying plate 251 is bonding, clamping or threaded connection, so that there is no relative displacement between the sound-absorbing material layer 252 and the rectifying plate 251, so as to ensure the overall structural integrity of the sound-absorbing assembly 250, which is beneficial to Ensure the effect of noise reduction and rectification.

The sound-absorbing material layer 252 is used to cover the sound-absorbing holes on the rectifying plate 251 to effectively eliminate the noise, radiation noise and reverberation noise generated by the gas vortex in the range hood. Specifically, the connection method between the sound-absorbing material layer 252 and the rectifying plate 251 can be any one of the above-mentioned multiple fixing methods, and it only needs to satisfy that there is no relative displacement between the sound-absorbing material layer 252 and the rectifying plate 251, so as to ensure the overall structure of the sound-absorbing assembly 250 Integrity, which is conducive to ensuring the effect of noise reduction and rectification.

It should be noted that, in addition to the above-mentioned bonding, clamping or threaded connection, the connection between the sound-absorbing material layer 252 and the rectifying plate 251 can also be other fixed connection methods such as rivet connection or bolt connection, which can be determined according to actual implementation conditions. To choose a reasonable connection method.

Preferably, the outer surface of the rectifying plate 251 away from the sound-absorbing material layer 252 is an arc-shaped surface.

In this embodiment, the rectifying plate 251 includes a mounting surface for cooperating with the sound-absorbing material layer 252 and a rectifying surface opposite to the mounting surface. The material layer 252 can well reduce the noise value, so as to optimize the noise of the whole range hood.

Preferably, the sound-absorbing material layer 252 includes a mixture of sound-absorbing cotton and fiber cloth and/or a mixture of sponge, non-woven fabric and resin.

Specifically, the sound-absorbing material layer 252 can use a mixture of sound-absorbing cotton and fiber cloth, which has good sound-absorbing effect, strong processability, good stability, easy dust removal, and simple maintenance; sponge, non-woven fabric and resin can also be used. A mixture of sound-absorbing effect and low price. In practical applications, the appropriate type of sound-absorbing material can be selected according to actual implementation conditions.

To sum up, the utility model provides a range hood, which includes a box assembly and a sound-absorbing assembly inside the box assembly. The range of the angle with the vertically arranged side wall of the box assembly includes 20° to 60°. With the range hood provided by the present application, by setting the sound-absorbing assembly at the corner of the box assembly and inclined at an angle to the corner of the box assembly, it is possible to silence and reduce the noise of the flue gas in the hood and at the same time achieve noise reduction. The diversion effect of flue gas is beneficial to improve the effect of oil absorption fume. Also preferably, the angle range between the sound-absorbing component and the vertically disposed side wall of the box component is between 20° and 60°, which is more conducive to flow guidance and sound absorption. In addition, the range hood provided by the utility model has a simple structure, a reasonable design, and a simple processing technology, which is beneficial to reduce production costs, has strong practicability, and is beneficial to standardized production and popularization.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A range hood, characterized in that: it includes a box assembly and a sound-absorbing assembly arranged in the box assembly, and the sound-absorbing assembly is arranged at an angle to the corner of the box assembly; wherein, The range of the angle between the sound-absorbing assembly and the vertically disposed side wall of the box assembly includes 20° to 60°. 2 . The range hood according to claim 1 , characterized in that: the range of the angle between the sound-absorbing assembly and the vertically disposed side wall of the box assembly includes 30° to 40°. 3. The range hood according to claim 1, characterized in that it further comprises a fan assembly arranged in the box assembly, the fan assembly includes a vertically arranged volute, and the sound-absorbing assembly corresponds to the The air inlet of the volute is arranged in the box assembly. 4. The range hood according to claim 3, characterized in that: the sound-absorbing assembly includes a rectifying plate and a sound-absorbing material layer arranged on the rectifying plate, and the rectifying plate is provided with a plurality of sound-absorbing holes, so The sound-absorbing material layer covers a plurality of the sound-absorbing holes. 5. The range hood according to claim 4, characterized in that: the box assembly includes a casing and a frame connected to the casing and located above the casing; the lower end of the volute Located in the casing, the upper end of the volute is at least partly protruded from the casing and the part protruding from the casing is located in the frame; the front plate of the volute is provided with the air inlet The sound-absorbing assembly is arranged obliquely downward at the corner of the frame corresponding to the air inlet. 6. The range hood according to claim 5, wherein at least one fixing hole is provided on the edge of the sound-absorbing assembly, and the frame is provided with a mounting hole corresponding to the fixing hole, and the sound-absorbing assembly passes through Fasteners are sequentially passed through the fixing holes and the installation holes to realize their fixed connection with the frame. 7. The range hood according to claim 6, wherein the frame comprises a frame structure with a bottom opening formed by a front board, a rear board, a left board, a right board and a top board, and the top board, the front board, The left plate and the right plate are provided with the mounting holes, and the surrounding edges of the rectifying plate are provided with the fixing holes corresponding to the mounting holes, so that the sound-absorbing assembly and the frame form a triangular fixed rectification structure. 8 . The range hood according to claim 4 , characterized in that: the sound-absorbing material layer is connected to the rectifying plate by bonding, clamping or threaded connection. 9. The range hood according to claim 4, characterized in that: the outer surface of the rectifying plate away from the sound-absorbing material layer is an arc-shaped surface. 10. The range hood according to claim 4, characterized in that: the sound-absorbing material layer comprises a mixture of sound-absorbing cotton and fiber cloth and/or a mixture of sponge, non-woven fabric and resin.