Oil smoke exhaust fan sound insulation device with oil stain discharge function

Abstract

The utility model relates to an oil fume exhaust fan sound insulation device with an oil stain discharge function, which is arranged on the outer side of an oil fume exhaust fan and comprises a sound insulation and absorption cover, a flow guide elbow and a silencing device, and the oil fume exhaust fan, the flow guide elbow and the silencing device are sequentially arranged in the sound insulation and absorption cover along the wind direction; the sound insulation and absorption cover is provided with an air inlet and an air outlet, the air inlet end of the oil smoke exhaust fan penetrates through the air inlet of the sound insulation and absorption cover, the air outlet end of the silencing device is correspondingly communicated with the air outlet of the sound insulation and absorption cover, an air duct of the flow guide elbow is arranged in an arc shape, and an oil stain collection box is arranged on the lower side of the flow guide elbow. The device has the advantages of being good in structural stability, small in oil stain discharge amount, good in sound insulation and noise reduction effect and easy to install and maintain in the later period, the oil stain collecting box can be detached and cleaned, and regular cleaning and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of oil fume exhaust fans, and in particular to a sound insulation device for oil fume exhaust fans with the function of exhausting oil pollution. Background Art

[0002] With the development of cities, catering business places that are closely related to people's lives are increasingly distributed. There are restaurants or canteens in residential basements, large commercial complexes, and government schools. The exhaust fan for catering is an indispensable equipment, and most of them are arranged on outdoor roofs or ground. In many cases, the exhaust fan is too close to sensitive areas such as residential areas and offices, resulting in the noise generated by the exhaust fan during operation seriously interfering with the lives and work of people around. The noise of the exhaust fan is mainly the noise of the exhaust port and the motor noise, among which the aerodynamic noise of the exhaust port is the strongest. In addition, even after the fume purifier is installed at the front end of the fan air inlet section, some oil pollution will still be discharged with the wind; at present, when some exhaust fans use sound insulation covers, the oil pollution discharged with the wind is not separated and collected, and it directly enters the exhaust channel of the sound insulation cover, sticks to the holes of the perforated plate of the sound insulation board and the muffler insert, and reduces the overall sound insulation and absorption effect of the sound insulation cover. In order to reduce the adverse effects of the exhaust fan noise on the surrounding working and rest environment and not affect the normal operation of the exhaust fan, it is necessary to design a sound insulation device for the exhaust fan with the function of exhausting oil and dirt. Utility Model Content

[0003] Based on the above description, the utility model provides a noise insulation device for an oil fume exhaust fan with an oil pollution exhaust function, so as to solve the problem that the noise of the oil fume exhaust fan and the oil fume have an adverse effect on the surrounding environment.

[0004] The utility model solves the above technical problems with the following technical solutions: a sound insulation device for an exhaust fan with an oily dirt exhaust function, arranged outside the exhaust fan, comprising:

[0005] A sound-absorbing cover, a guide elbow and a silencer, wherein the fume exhaust fan, the guide elbow and the silencer are arranged in sequence along the wind direction in the sound-absorbing cover;

[0006] The soundproofing hood is provided with an air inlet and an air outlet, the air inlet end of the exhaust fan passes through the air inlet of the soundproofing hood, the air outlet end of the silencer is correspondingly connected to the air outlet of the soundproofing hood, the air duct of the guide elbow is arranged in an arc shape, and an oil collection box is arranged on the lower side of the guide elbow.

[0007] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the utility model provides a sound insulation device for an exhaust fan with an oil discharge function, which has a good noise reduction effect and can effectively reduce the noise of the motor exhaust port and the motor noise when the fan is running; the oil discharge function can reduce the reduction of the sound absorption effect of the oil on the exhaust fan sound insulation device; the arc-shaped air duct of the guide elbow buffers and guides the airflow output by the exhaust fan, which can reduce the wind speed of the airflow discharged by the device and make it smoother, reducing the airflow noise. The device of the utility model has the characteristics of good structural stability, low oil discharge, good sound insulation and noise reduction effect, easy installation and later maintenance, and its oil collection box can be disassembled and cleaned, which is convenient for regular cleaning and maintenance.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the air outlet end of the guide elbow is arranged above the air inlet end of the guide elbow, the air outlet end of the guide elbow is provided with an oil fume filter, the lower side of the arc-shaped air duct of the guide elbow is provided with an oil outlet, the oil collection box is arranged below the oil outlet and is detachably connected to the guide elbow.

[0010] After adopting the above technical scheme, the beneficial effects are as follows: the oil fume filter is arranged at the air outlet end of the guide elbow to separate and collect the oil discharged with the wind, and the oil flows along the arc-shaped air duct to the oil outlet below, and finally flows into the oil collection box, which is convenient for disassembling the oil collection box to centrally clean the oil, and prevent the oil from being discharged with the wind and polluting the environment.

[0011] Furthermore, an exhaust guide cap is fixedly provided on the outer side of the air outlet of the sound-absorbing cover, the air inlet end of the exhaust guide cap is arranged corresponding to the air outlet end of the silencer, and the air duct of the exhaust guide cap is arranged in an arc shape.

[0012] After adopting the above technical scheme, the beneficial effects are as follows: the arc-shaped air duct of the exhaust guide cap guides the airflow output by the silencer, which can make the exhaust airflow smoother, reduce the wind speed, reduce the airflow noise, and reduce the entry of external water droplets into the device, thereby providing moisture-proof protection for the range fumes fan.

[0013] Furthermore, the exhaust air guide cap includes an arc-shaped guide plate and two guide cap side plates. The two guide cap side plates are symmetrically arranged on both sides of the arc-shaped guide plate and together constitute the arc-shaped air duct of the exhaust air guide cap.

[0014] After adopting the above technical solution, the beneficial effects are as follows: the side panels of the guide cap provide structural support for the arc-shaped guide plate, and the arc-shaped guide plate buffers and guides the discharged airflow, thereby making the airflow smoother and reducing the airflow noise. It can also block the air outlet on the sound-absorbing cover and prevent external water droplets from entering the inside of the sound-absorbing cover.

[0015] Furthermore, a sound insulation and absorption mounting plate is provided in the sound insulation and absorption cover, and the sound insulation and absorption mounting plate divides the accommodating space in the sound insulation and absorption cover into a first cavity and a second cavity, the fume exhaust fan is arranged in the first cavity, and the guide elbow and the silencer are arranged in the second cavity; an opening is provided on the sound insulation and absorption mounting plate, the air inlet end of the guide elbow is tightly connected with the opening of the sound insulation and absorption mounting plate, and the air outlet end of the fume exhaust fan is arranged corresponding to the opening of the sound insulation and absorption mounting plate.

[0016] After adopting the above technical scheme, the beneficial effects are as follows: the sound-insulating and absorbing mounting plate not only provides structural support for the guide elbow, but also provides a sealing structure for the connection between the guide elbow and the fume exhaust fan, so that the gas containing oil pollution can pass through the fume filter arranged at the air outlet end of the guide elbow, thereby ensuring the oil pollution filtering effect.

[0017] Furthermore, a heat dissipation port is provided on the first cavity, the heat dissipation port is arranged corresponding to the upper part of the fume exhaust fan, and a sound-absorbing shutter is provided on the heat dissipation port.

[0018] After adopting the above technical solution, the beneficial effects are as follows: since the range fumes fan is located in the first cavity, the heat of the oil fumes and the heat generated when the range fumes fan is working cause the temperature in the first cavity to be higher, and the silencer shutters of the heat dissipation port can not only dissipate heat for the first cavity to increase the service life of the range fumes fan, but also prevent the motor noise from having an adverse effect on the environment during the heat dissipation process.

[0019] Furthermore, the sound insulation and absorption cover comprises a steel structure frame and a plurality of sound insulation and absorption panels, and the plurality of sound insulation and absorption panels are connected and enclosed by the steel structure frame to form the accommodating space;

[0020] A certain sound-absorbing panel corresponding to the second cavity is arranged as an inspection door, and the inspection door is pivotally connected to the steel structure frame, and the second cavity can be opened by rotating the inspection door.

[0021] After adopting the above technical solution, the beneficial effects are as follows: multiple sound insulation and absorption panels serve as the main part of the sound insulation and absorption cover, and the steel structure frame provides structural support for the sound insulation and absorption cover as a whole, which has a better noise reduction effect under the premise of ensuring that the device has sufficient structural strength. The setting of the inspection door facilitates the disassembly and assembly of the oil collection box to clean the collected oil, and also facilitates the repair and maintenance of the device.

[0022] Furthermore, a certain sound insulation and absorption panel corresponding to the exhaust fume fan is set as a detachable sound insulation and absorption panel, and the detachable sound insulation and absorption panel is detachably connected to the steel structure frame. When the detachable sound insulation and absorption panel is removed, the first cavity is opened.

[0023] After adopting the above technical solution, the beneficial effect is: the detachable sound-absorbing panel arranged corresponding to the first cavity facilitates the inspection and maintenance of the fume exhaust fan.

[0024] Furthermore, the inspection door and / or the detachable sound insulation and absorption panel are provided with an operating handle.

[0025] After adopting the above technical solution, the beneficial effect is: the operating handle makes it easy for the operator to open and close the inspection door 102b and / or the detachable sound insulation and absorption panel, thereby simplifying the repair and maintenance of the device.

[0026] Furthermore, the installation gap at the fixed connection between the sound insulation and absorption board and the steel structure frame is filled with flexible glue.

[0027] After adopting the above technical solution, the beneficial effect is: the flexible glue fills the gaps of the sound insulation cover, improves the airtightness of the device, and thus improves the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a sound insulation device for an oil fume exhaust fan with an oil exhaust function provided by an embodiment of the utility model;

[0029] Figure 2 for Figure 1 The main view;

[0030] Figure 3 for Figure 1 Side view of

[0031] Figure 4 for Figure 1 A schematic diagram of the internal three-dimensional structure of the device shown;

[0032] Figure 5 A schematic diagram of the structure of the guide elbow 3 provided in the embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the installation of the oil collection box 5 provided in the embodiment of the utility model;

[0034] Figure 7 A schematic diagram of the installation structure of a detachable sound-absorbing and insulating panel provided in an embodiment of the utility model;

[0035] Figure 8 A schematic diagram of the heat dissipation port structure provided in an embodiment of the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Sound-absorbing cover, 101. Steel structure frame, 101a. Square steel beam, 101b. I-beam column, 102. Sound-absorbing board, 102a. Noise-absorbing shutter, 102b. Inspection door, 102c. Removable sound-absorbing board, 103. Sound-absorbing mounting plate, 104. Operating handle, 2. Range hood, 201. Fan air inlet flange pipe, 3. Guide elbow, 301. Oil Smoke filter, 302, oil outlet, 4, silencer, 5, oil collection box, 501, handle, 6, exhaust guide cap, 601, arc guide plate, 602, guide cap side plate, 7, hinge, 8, fixing buckle, 9, Z-shaped connector, 10, hook, 11, rivet, 12, rotating buckle, 13, tension bolt, 14, bolt, 15, L-shaped connector, 16, angle steel. DETAILED DESCRIPTION

[0038] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0040] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, the element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0041] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0042] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0043] like Figures 1 to 4 As shown, the embodiment of the utility model provides a noise insulation device for an exhaust fan with an oily dirt exhaust function, which is arranged outside the exhaust fan 2 and includes:

[0044] A sound-insulating and absorbing cover 1, a flow-guiding elbow 3 and a silencer 4, wherein the fume exhaust fan 2, the flow-guiding elbow 3 and the silencer 4 are sequentially arranged in the sound-insulating and absorbing cover 1 along the wind direction;

[0045] The soundproofing and absorbing cover 1 is provided with an air inlet and an air outlet, the air inlet end of the exhaust fume fan 2 (for example, the fan air inlet flange pipe 201) passes through the air inlet of the soundproofing and absorbing cover 1 and fits with the air inlet edge of the soundproofing and absorbing cover 1, thereby sealing the gap between the air inlet of the soundproofing and absorbing cover 1 and the air inlet end of the exhaust fume fan 2; the air outlet end of the silencer 4 is correspondingly connected to the air outlet of the soundproofing and absorbing cover 1, the air duct of the guide elbow 3 is arranged in an arc shape, and an oil collection box 5 is arranged on the lower side of the guide elbow 3.

[0046] It is understandable that, based on the defects of the background technology, the utility model provides a sound insulation device for an exhaust fan with an oil-discharging function. The sound-isolating cover 1 can isolate most motor noises and reduce the impact of motor noise on the environment. The arc-shaped air duct of the guide elbow 3 buffers and guides the airflow output by the exhaust fan 2, which can reduce the wind speed of the airflow, make it smoother, and reduce the noise. After the airflow further passes through the silencer 4, the airflow noise discharged by the device is weakened again. In addition, the device has the function of discharging oil. First, it can purify the gas discharged by the sound insulation device of the exhaust fan 2, and second, it can reduce the reduction of the sound absorption effect of the exhaust fan 2 sound insulation device due to the oil in the gas. The device of the utility model has the characteristics of good structural stability, low oil emission, good sound insulation and noise reduction effect, easy installation and later maintenance, and its oil collection box 5 can be disassembled and cleaned, which is convenient for regular cleaning and maintenance.

[0047] Based on the above technical solution, this embodiment can also be improved as follows.

[0048] In one possible implementation, Figure 5The figure shows a schematic diagram of the structure of the guide elbow 3, wherein the air outlet end of the guide elbow 3 is arranged above the air inlet end of the guide elbow 3, the air outlet end of the guide elbow 3 is provided with an oil fume filter 301, an oil outlet 302 is provided on the lower side of the arc-shaped air duct of the guide elbow 3, the oil collection box 5 is arranged below the oil outlet 302 and is detachably connected to the guide elbow 3.

[0049] In this embodiment, the oil smoke output by the oil smoke exhaust fan 2 enters the air inlet end of the guide elbow 3, and the arc-shaped air duct of the guide elbow 3 buffers the oil smoke, thereby reducing the wind speed, making the air flow smoother, and reducing wind noise. At the same time, since the air outlet end of the guide elbow 3 is higher than the air inlet end, the oil smoke impacts the arc-shaped inner wall of the arc-shaped air duct, and part of the oil dirt is separated from the air flow and flows downward along the arc-shaped inner wall of the arc-shaped air duct, and then flows into the oil dirt collection box 5 through the oil dirt outlet 302. The oil smoke filter 301 is arranged at the air outlet end of the guide elbow 3 to filter the oil smoke. After the oil dirt accompanying the oil smoke is filtered out, it flows to the oil dirt outlet 302 below along the arc-shaped air duct, and finally merges into the oil dirt collection box 5. The oil dirt collection box 5 is detachable, which is convenient for disassembling the oil dirt collection box 5 to centrally clean the oil dirt, and prevent the oil dirt from being discharged with the wind and polluting the environment.

[0050] More specifically, the oil fume filter 301 can be a finished aluminum reverse-drawing T-shaped oil fume filter 301. A detachable mounting structure, such as a slot-type or hook-type mounting structure, is provided near the oil outlet 302 on the lower side of the guide elbow 3 to facilitate installation and removal of the oil collection box 5. Figure 6 The diagram shows the installation of the oil collection box 5 in a certain implementation scenario. Figure 6 As shown, a group of Z-shaped connectors 9 are symmetrically arranged outside the oil outlet 302, and the Z-shaped connectors 9 are fixedly connected to the guide elbow 3 through rivets 11. A hook 10 is arranged on the upper edge of the oil collection box 5, and the hook 10 is hung on the Z-shaped connector 9 to achieve the installation of the oil collection box 5. The hook 10 is separated from the Z-shaped connector 9 to achieve the removal of the oil collection box 5. In order to facilitate the installation and removal of the oil collection box 5, a handle 501 can also be arranged on the side of the oil collection box 5.

[0051] In one possible implementation, Figure 1 to Figure 4 As shown, an exhaust guide cap 6 is fixedly provided on the outer side of the air outlet of the sound-absorbing cover 1, the air inlet end of the exhaust guide cap 6 is arranged corresponding to the air outlet end of the muffler 4, and the air duct of the exhaust guide cap 6 is arranged in an arc shape.

[0052] It can be understood that the silencer 4 has a plurality of silencer inserts arranged in parallel, and the gaps between adjacent silencer inserts are airflow channels. When the airflow passes through a plurality of airflow channels in the silencer 4, the contact area between the sound absorbing material and the sound waves is increased, the direct noise is reduced, and the silencer effect is ensured. The arc-shaped air duct of the exhaust guide cap 6 guides the noise-reduced airflow output by the silencer 4, which can make the exhaust airflow smoother and reduce the wind speed, further reducing the airflow noise, and can also reduce the external water droplets from entering the device, and provide moisture-proof protection for the exhaust fan 2.

[0053] In one possible implementation, Figure 1 to Figure 4 As shown, the exhaust air guide cap 6 includes an arc-shaped guide plate 601 and two guide cap side plates 602 . The two guide cap side plates 602 are symmetrically arranged on both sides of the arc-shaped guide plate 601 and together constitute the arc-shaped air duct of the exhaust air guide cap 6 .

[0054] It can be understood that the guide cap side plate 602 provides structural support for the arc guide plate 601, and the arc guide plate 601 buffers and guides the discharged airflow, thereby making the airflow smoother and reducing the airflow noise. It can also block the air outlet on the sound insulation cover 1 and prevent external water droplets from entering the interior of the sound insulation cover 1.

[0055] In one possible implementation, Figure 4 As shown, a sound-proofing baffle is provided in the sound-proofing cover 1, and the sound-proofing baffle divides the accommodation space in the sound-proofing cover 1 into a first cavity and a second cavity, and the fume exhaust fan 2 is arranged in the first cavity to reduce the fan noise, and the guide elbow 3 and the muffler 4 are arranged in the second cavity to reduce the airflow noise; an opening is provided on the sound-proofing baffle, and the air inlet end of the guide elbow 3 is tightly connected with the opening of the sound-proofing baffle, and the air outlet end of the fume exhaust fan 2 is arranged corresponding to the opening of the sound-proofing baffle, and the air outlet end of the fume exhaust fan 2 can also be connected to the opening of the sound-proofing baffle to achieve the connection between the air outlet end of the fume exhaust fan 2 and the air inlet end of the guide elbow 3. A pipeline can also be arranged to pass through the opening of the sound-proofing baffle, and the air outlet end of the fume exhaust fan 2 and the air inlet end of the guide elbow 3 are connected through the pipeline. The silencer 4 can be fixedly connected to the sound-insulating and absorbing baffle and / or the inner wall of the sound-insulating and absorbing cover 1 through the angle steel 16 .

[0056] It can be understood that the sound-insulating and absorbing baffle not only provides structural support for the guide elbow 3, but also provides a sealing structure for the connection between the guide elbow 3 and the fume exhaust fan 2, so that the gas containing oil pollution can pass through the fume filter 301 arranged at the air outlet end of the guide elbow 3, thereby ensuring the oil pollution filtering effect.

[0057] In one possible implementation, Figure 1 to Figure 3 as well as Figure 8As shown, a heat dissipation port is provided on the first cavity, and the heat dissipation port is arranged corresponding to the upper part of the range hood fan 2. A sound-absorbing louver 102a is provided on the heat dissipation port. The sound-absorbing louver 102a is preferably positioned on the heat dissipation port through an L-shaped connecting piece 15, and then the sound-absorbing louver 102a is fixedly installed on the heat dissipation port through the bolts 14 on the L-shaped connecting piece 15.

[0058] It can be understood that since the range fumes fan 2 is located in the first cavity, the heat of the oil fumes and the heat generated by the range fumes fan 2 during operation cause the temperature in the first cavity to be relatively high. The silencer shutter 102a of the heat dissipation port can not only dissipate heat for the first cavity to increase the service life of the range fumes fan 2, but also prevent the motor noise from having an adverse effect on the environment during the heat dissipation process.

[0059] In one possible implementation, Figure 1 to Figure 4 As shown, the soundproof enclosure 1 includes a steel structure frame 101 and a plurality of soundproofing panels 102, wherein the plurality of soundproofing panels 102 are connected and enclosed by the steel structure frame 101 to form the accommodation space; the steel structure frame 101 is welded by a plurality of square steel beams 101a and I-beam columns 101b, and has a high structural strength. The plurality of soundproofing panels 102 are inserted into the steel structure frame 101 for installation and fixation, and the sound-absorbing surface of the soundproofing panels 102 faces the inner side of the soundproof enclosure 1, for example, the side close to the exhaust fan 2.

[0060] It can be understood that the multiple sound insulation and absorption panels 102 serve as the main part of the sound insulation and absorption cover 1, and the steel structure frame 101 provides structural support for the sound insulation and absorption cover 1 as a whole, which has a better noise reduction effect while ensuring that the device has sufficient structural strength.

[0061] like Figure 1 and Figure 3 As shown, a certain sound-absorbing panel 102 corresponding to the second cavity is set as an inspection door 102b, and the inspection door 102b is pivotally connected to the steel structure frame 101 through a hinge 7. The inspection door 102b can be rotated along the hinge 7 to open the second cavity.

[0062] The provision of the inspection door 102b facilitates the disassembly and assembly of the oil collection box 5 to clean the collected oil, and also facilitates the repair and maintenance of the device.

[0063] In one possible implementation, Figure 1 and Figure 3As shown, a certain sound insulation and absorption panel 102 corresponding to the exhaust fan 2 is set as a detachable sound insulation and absorption panel 102c, that is, a certain sound insulation and absorption panel 102 constituting the first cavity is set as a detachable sound insulation and absorption panel 102c, and the detachable sound insulation and absorption panel 102c is detachably connected to the steel structure frame 101. When the detachable sound insulation and absorption panel 102c is removed, the first cavity is opened.

[0064] It can be understood that the detachable sound-absorbing plate 102c arranged corresponding to the first cavity facilitates the inspection and maintenance of the fume exhaust fan 2.

[0065] More specifically, Figure 7 The possible installation structure of the detachable sound insulation and absorption board 102c is shown, and a plurality of rotating buckles 12 are arranged on the steel structure frame 101. Each rotating buckle 12 is hinged to the steel structure frame 101 through a tension bolt 13. One end of the rotating buckle 12 is set as a long arm and the other end is set as a short arm. When the tension bolt 13 is in a loose state, its long arm and short arm can rotate around the axis of the tension bolt 13. When the tension bolt 13 is in a locked state, the long arm and short arm of the rotating buckle 12 are locked and cannot rotate. When the rotating buckle 12 is rotated so that its long arm presses the detachable sound insulation and absorption board 102c, the plurality of rotating buckles 12 cooperate with each other to lock the detachable sound insulation and absorption board 102c on the steel structure frame 101. When the rotating buckle 12 is rotated again to make its long arm away from the detachable sound insulation and absorption plate 102c, the detachable sound insulation and absorption plate 102c can be removed because the short arm of the rotating buckle 12 is short and cannot press the detachable sound insulation and absorption plate 102c. Figure 1 and Figure 3 As shown, a fixed buckle 8 is provided on the steel structure frame 101 at a position corresponding to a certain edge of the detachable sound insulation and absorption board 102c, and a rotating buckle 12 is provided at a position corresponding to the other edge of the detachable sound insulation and absorption board 102c. Before installing the detachable sound insulation and absorption board 102c, the detachable sound insulation and absorption board 102c is first positioned by the fixed buckle 8, and then the detachable sound insulation and absorption board 102c is locked by a plurality of rotating buckles 12. The plurality of fixed buckles 8 and the rotating buckles 12 cooperate with each other to achieve rapid installation of the detachable sound insulation and absorption board 102c.

[0066] In one possible implementation, Figure 1 to Figure 4 As shown, an operating handle 104 is provided on the inspection door 102b and / or the detachable sound insulation and absorption panel 102c.

[0067] It is understandable that the operating handle 104 facilitates the operator to open and close the inspection door 102b and / or the detachable sound-absorbing panel 102c, thereby simplifying the repair and maintenance of the device.

[0068] In one possible implementation manner, a mounting gap at a location where the sound insulation and absorption panel 102 is fixedly connected to the steel structure frame 101 is filled with flexible glue.

[0069] It can be understood that the flexible glue fills the gaps of the sound-absorbing cover 1 to improve the airtightness of the device, thereby improving the noise reduction effect.

[0070] The present invention is now described by taking a specific implementation scenario as an example.

[0071] A sound insulation device for an exhaust fume fan with an oil exhaust function provided in this implementation scenario includes a steel structure frame 101, a plurality of sound insulation and absorption panels 102, an exhaust guide cap 6, a silencer 4 (including a plurality of silencer inserts), an inspection door 102b, a heat dissipation port, a fixing buckle 8, a guide elbow 3 and an oil collection box 5.

[0072] The steel structure frame 101 is formed by enclosing and connecting square steel beams 101a and I-beam columns 101b. Several sound-absorbing panels 102 are inserted into the column grooves of the steel structure frame 101 and installed and fixed, and the sound-absorbing surface of the sound-absorbing panels 102 faces the exhaust fan 2. The exhaust guide cap 6 is composed of an arc-shaped guide plate 601 and guide cap side plates 602 at both ends, and the inner side thereof is set as a sound-absorbing structure, which is arranged above the steel structure frame 101. The silencer 4 is arranged under the exhaust guide cap 6, and the silencer insert in the silencer 4 is fixed at four points, the upper part of which is connected and fixed to the steel structure frame 101, and the lower part of which is connected and fixed to the angle steel 16, and the two ends of the angle steel 16 are welded to the I-beam column 101b. The thickness of the muffler insert is 100mm, and the spacing between the muffler inserts is determined by calculating the fan air volume and the designed exhaust wind speed. The sheet spacing size can be selected as 50, 100, 150, and 200mm. A hinge 7 is set on the I-beam column 101b of the steel structure frame 101 to connect the openable inspection door 102b, which is made of the sound insulation board 102.

[0073] A section of hose runs through the opening of the sound-insulating and absorbing mounting plate 103, and the air inlet end of the guide elbow 3 is connected to the fan exhaust flange by the section of hose. The air outlet of the guide elbow 3 is arranged toward the upper exhaust guide cap 6, and the silencer 4 is arranged between the air outlet of the guide elbow 3 and the exhaust guide cap 6. A finished aluminum reverse-drawing T-shaped fume filter 301 is arranged at the air outlet of the guide elbow 3. A slot hole is provided on the lower surface of the guide elbow 3 as an oil outlet 302, and the Z-shaped connector 9 is made of a steel plate bent into a Z shape. The upper half of the Z-shaped connector 9 is connected and fixed to the guide elbow 3 by a rivet 11. Hooks 10 matching the Z-shaped connector 9 are provided on both sides of the oil collection box 5, and a handle 501 is provided on the side of the oil collection box 5. The oil collection box 5 is movably fixed by the hook 10 and the lower half of the Z-shaped connector 9. A disposable oil pad can be laid in the oil collection box 5 to absorb the collected oil. When the oil is discharged from the oil fume exhaust fan 2 with the wind, part of the oil is deposited in the guide elbow 3 due to gravity, and part of the oil hits the arc-shaped inner wall of the guide elbow 3, and then slides down along the inner wall of the guide elbow 3 into the oil collection box 5. When the oil collection box 5 is full of oil, the inspection door 102b can be opened, and the oil collection box 5 can be horizontally pulled out through the handle 501 for regular cleaning.

[0074] The fixing buckle 8 can be used to position the removable sound insulation and absorption board 102c, and then the removable sound insulation and absorption board 102c is locked by the rotating buckle 1219 and the tension bolt 13. The bolt 14 mounting hole in the middle of the rotating buckle 12 is aligned with the reserved bolt 14 mounting hole of the steel structure frame 101, and the tension bolt 13 is passed through to fix it. When the tension bolt 13 rotates clockwise, the rotating buckle 12 presses the removable sound insulation and absorption board 102c; when the tension bolt 13 rotates counterclockwise, the lower end of the rotating buckle 12 is lifted counterclockwise, and the removable sound insulation and absorption board 102c can be removed by operating the handle 104, and the fan housing and motor can be inspected.

[0075] The L-shaped connector 15 is made of a steel plate bent 90° into an equilateral L-shape, and both side arms of the L-shaped connector 15 have reserved mounting holes for bolts 14. The reserved mounting holes for bolts 14 on both side arms of the L-shaped connector 15 are aligned with the reserved mounting holes for bolts 14 of the muffler shutter 102a and the reserved mounting holes for bolts 14 around the heat dissipation port, and are fixed with bolts 14.

[0076] The heat dissipation port adopts a 300mm thick sound-absorbing louver 102a, the sound absorption volume is greater than 10dB, and the flow rate is greater than 50%.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sound insulation device for an oil fume exhaust fan with an oil exhaust function, characterized in that: It is arranged outside the oil fume exhaust fan (2) and comprises: A sound-isolating and absorbing cover (1), a flow-guiding elbow (3) and a silencer (4), wherein the fume exhaust fan (2), the flow-guiding elbow (3) and the silencer (4) are arranged in sequence along the wind direction in the sound-isolating and absorbing cover (1); The soundproof cover (1) is provided with an air inlet and an air outlet, the air inlet end of the fume exhaust fan (2) passes through the air inlet of the soundproof cover (1), the air outlet end of the muffler (4) is correspondingly connected to the air outlet of the soundproof cover (1), the air duct of the guide elbow (3) is arranged in an arc shape, and an oil collection box (5) is arranged at the lower side of the guide elbow (3).

2. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 1 is characterized in that: The air outlet end of the guide elbow (3) is arranged above the air inlet end of the guide elbow (3), the air outlet end of the guide elbow (3) is provided with an oil fume filter (301), the lower side of the arc-shaped air duct of the guide elbow (3) is provided with an oil outlet (302), and the oil collection box (5) is arranged below the oil outlet (302) and is detachably connected to the guide elbow (3).

3. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 1 is characterized in that: An exhaust air guide cap (6) is fixedly provided on the outer side of the air outlet of the sound-isolating and absorbing cover (1); the air inlet end of the exhaust air guide cap (6) is arranged corresponding to the air outlet end of the muffler (4); and the air duct of the exhaust air guide cap (6) is arranged in an arc shape.

4. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 3 is characterized in that: The exhaust air guide cap (6) comprises an arc-shaped guide plate (601) and two guide cap side plates (602), wherein the two guide cap side plates (602) are symmetrically arranged on both sides of the arc-shaped guide plate (601) and together constitute the arc-shaped air duct of the exhaust air guide cap (6).

5. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 1 is characterized in that: A sound-isolating and absorbing mounting plate (103) is provided in the sound-isolating and absorbing cover (1), and the sound-isolating and absorbing mounting plate (103) divides the accommodation space in the sound-isolating and absorbing cover (1) into a first cavity and a second cavity; the fume exhaust fan (2) is arranged in the first cavity, and the guide elbow (3) and the silencer (4) are arranged in the second cavity; an opening is provided on the sound-isolating and absorbing mounting plate (103), an air inlet end of the guide elbow (3) is tightly connected to the opening of the sound-isolating and absorbing mounting plate (103), and an air outlet end of the fume exhaust fan (2) is arranged corresponding to the opening of the sound-isolating and absorbing mounting plate (103).

6. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 5, characterized in that: The first cavity is provided with a heat dissipation port, the heat dissipation port is arranged corresponding to the upper part of the fume exhaust fan (2), and a sound-absorbing shutter (102a) is provided on the heat dissipation port.

7. A sound insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 5 or 6, characterized in that: The sound insulation and absorption cover (1) comprises a steel structure frame (101) and a plurality of sound insulation and absorption panels (102), wherein the plurality of sound insulation and absorption panels (102) are connected and enclosed by the steel structure frame (101) to form the accommodation space; One of the sound-isolating and absorbing panels (102) corresponding to the second cavity is configured as an inspection door (102b), and the inspection door (102b) is pivotally connected to the steel structure frame (101), and the second cavity can be opened by rotating the inspection door (102b).

8. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 7, characterized in that: A certain sound insulation and absorption plate (102) corresponding to the fume exhaust fan (2) is configured as a detachable sound insulation and absorption plate (102c), and the detachable sound insulation and absorption plate (102c) is detachably connected to the steel structure frame (101); when the detachable sound insulation and absorption plate (102c) is removed, the first cavity is opened.

9. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 8, characterized in that: An operating handle (104) is provided on the inspection door (102b) and / or the detachable sound insulation and absorption panel (102c).

10. The noise insulation device for an oil fume exhaust fan with an oil exhaust function according to claim 7, characterized in that: The installation gap at the fixed connection between the sound insulation and absorption plate (102) and the steel structure frame (101) is filled with flexible glue.

Images