Noise reduction structure applied to integrated cooker, fan system and integrated cooker

Abstract

The utility model relates to the technical field of integrated stoves, in particular to a noise reduction structure applied to an integrated stove, a fan system and the integrated stove. The integrated cooker comprises an air bellow and a centrifugal fan, the centrifugal fan and the noise reduction structure are both arranged in the air bellow, the noise reduction structure comprises at least one sound absorption plate, a plurality of sound absorption openings are formed in the sound absorption plate, and the area of the sound absorption openings is larger than or equal to a first preset area. The size of the first preset area is an area lower limit value allowing the noise audio of the integrated cooker in the target noise frequency range to pass through; the sound absorption cavity is communicated with the sound absorption opening, a sound absorption material body is arranged in the sound absorption cavity and / or the sound absorption opening, and the sound absorption material body can effectively absorb noise audio frequency generated in the integrated cooker, so that the problems that the noise is too large and the noise reduction effect is poor in the using process of the integrated cooker are solved, and the comfort degree of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated stoves, and in particular to a noise reduction structure applied to integrated stoves, a fan system and the integrated stove. Background Art

[0002] Integrated stoves are household appliances commonly used in home kitchens. They integrate functions such as range hoods, stoves, and disinfection cabinets, saving kitchen space and becoming more and more popular among users. However, when the integrated stove is working, a large noise will be generated inside the fan system of the integrated stove. When the user uses the integrated stove, the noise is directly transmitted to the user, thereby affecting the user's experience. As users have higher and higher requirements for the fume absorption effect of the integrated stove, the resulting noise has also increased accordingly, further affecting the user's cooking experience. However, simply relying on the structural optimization of the fan system to reduce the noise of the whole machine has little effect and the noise reduction effect is not good. Therefore, it is urgent to provide a passive noise reduction device for sound absorption and noise reduction to improve the comfort of users when using the integrated stove. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a noise reduction structure, a fan system and an integrated stove applied to an integrated stove.

[0004] The utility model is realized by the following technical solutions:

[0005] In a first aspect, a noise reduction structure applied to an integrated stove is provided, the integrated stove comprising a bellows and a centrifugal fan, the centrifugal fan and the noise reduction structure are both arranged in the bellows, and the noise reduction structure comprises:

[0006] At least one sound absorbing board, the sound absorbing board is provided with a plurality of sound absorbing openings, the area of ​​the sound absorbing openings is greater than or equal to a first preset area, and the size of the first preset area is the lower limit value of the area that allows the noise audio of the integrated stove within the target noise frequency range to pass through;

[0007] A sound absorbing cavity is communicated with the sound absorbing port, and a sound absorbing material body is arranged in the sound absorbing cavity and / or the sound absorbing port.

[0008] In the embodiment of the utility model, the first preset area is not less than 2cm 2 .

[0009] In an embodiment of the utility model, the sound absorbing panel comprises a side wall sound absorbing panel and a bottom sound absorbing panel, the side wall sound absorbing panel and the bottom sound absorbing panel enclose the sound absorbing cavity, and the sound absorbing surface of the bottom sound absorbing panel is arranged toward the centrifugal fan.

[0010] In an embodiment of the utility model, the sound absorbing surface of the side wall sound absorbing panel is an inclined surface, and the sound absorbing surface is inclined relative to the bottom sound absorbing panel and faces the centrifugal fan.

[0011] In an embodiment of the utility model, the bellows includes a top plate and a back plate, an air inlet of the bellows is formed between the top plate and the back plate, the noise reduction structure is arranged in the gap between the top plate and the centrifugal fan and is connected to the top plate, and the projection area of ​​the noise reduction structure on the air inlet surface where the air inlet is located does not interfere with the air inlet.

[0012] In an embodiment of the utility model, the sound absorbing material body in the sound absorbing cavity is arranged on the side wall of the sound absorbing board.

[0013] In the embodiment of the utility model, the sound absorbing material body fills the space in the sound absorbing cavity.

[0014] In the embodiment of the utility model, the sound absorbing opening is arranged in a rectangular shape.

[0015] In a second aspect, a fan system is also provided, including a bellows, a centrifugal fan and the aforementioned noise reduction structure applied to the integrated stove, wherein the centrifugal fan and the noise reduction structure are both arranged in the bellows.

[0016] On the third aspect, an integrated stove is also provided, comprising the aforementioned fan system.

[0017] The utility model discloses a noise reduction structure, a fan system and an integrated stove applied to an integrated stove. The integrated stove comprises a bellows and a centrifugal fan. The noise reduction structure and the centrifugal fan are both arranged in the bellows. The noise reduction structure comprises a sound absorbing board and a sound absorbing cavity. A plurality of sound absorbing ports are provided on the sound absorbing board. Sound absorbing material bodies are arranged in the sound absorbing ports and / or the sound absorbing cavity. Noise audio in the bellows enters the sound absorbing cavity through the sound absorbing ports and is absorbed by the sound absorbing material bodies therein, thereby achieving a better noise reduction effect and improving the comfort of users when using the integrated stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the fan system of the utility model.

[0020] Figure 2 It is a schematic diagram showing the positional relationship between the noise reduction structure and the centrifugal fan.

[0021] Figure 3 It is a schematic diagram showing the positional relationship between the noise reduction structure and the top plate.

[0022] Figure 4 It is a structural schematic diagram of the noise reduction structure of the utility model applied to an integrated stove.

[0023] Reference numerals in the figures:

[0024] 1. Sound-absorbing port; 2. Bottom sound-absorbing panel; 3. Side wall sound-absorbing panel; 4. Top panel; 5. Back panel; 6. Air inlet; 7. Noise reduction structure; 8. Centrifugal fan; 9. Bellows. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-3 As shown, a fan system is provided in an embodiment of the utility model, and the fan system includes a bellows 9, a centrifugal fan 8 and a noise reduction structure 7, and the centrifugal fan 8 and the noise reduction structure 7 are both arranged in the bellows 9. The bellows 9 includes a top plate 4 and a back plate 5, and an air inlet 6 of the bellows 9 is formed between the top plate 4 and the back plate 5. The noise reduction structure 7 is arranged in the interval between the centrifugal fan 8 and the top plate 4 and is connected to the top plate 4, and the two can be detachably connected, for example, connected by screws, which can be convenient for disassembly and washing. Of course, the two can also be various common fixed connection methods.

[0027] Furthermore, the projection area of ​​the noise reduction structure 7 on the air inlet surface where the air inlet 6 is located does not interfere with the air inlet 6, so that the air intake of the air inlet 6 is not affected, and a good noise reduction effect can be achieved while ensuring a good fume absorption effect. The size of the noise reduction structure 7 is adapted to the size setting of the bellows 9 and the top plate 4. In this embodiment, the structural dimensions of the noise reduction structure 7 are 50-70 cm long, 7-10 cm wide, and 1.8-2.3 cm deep. Of course, the size of the noise reduction structure 7 is not limited to these parameter values, and the specific parameter values ​​can be adjusted accordingly according to the actual application occasions.

[0028] The embodiment of the utility model also provides a noise reduction structure 7 applied to the integrated stove. The noise reduction structure 7 can be directly applied to the integrated stove and absorb noises of different frequencies generated during the operation of the centrifugal fan 8 in the integrated stove and during smoking, so as to optimize the noise reduction effect of the integrated stove. The noise reduction coefficient of the noise reduction structure 7 of the utility model can reach 0.8.

[0029] Reference Manual Attached Figure 2-4As shown, the noise reduction structure 7 includes a sound absorbing cavity (not marked in the figure) and at least one sound absorbing board. A plurality of sound absorbing ports 1 are provided on the sound absorbing board, the sound absorbing cavity is connected to the sound absorbing ports 1, and a sound absorbing material body (not shown in the figure) is provided in the sound absorbing cavity and / or the sound absorbing ports 1. The sound absorbing material body can be various common sound absorbing materials, including but not limited to polyurethane, melamine, PP / PET two-component sound absorbing materials, etc. The sound absorbing material body in the sound absorbing cavity can be provided on the side wall of the sound absorbing board, or can fill the space of the sound absorbing cavity, and the type and filling amount of the sound absorbing material body can be reasonably selected according to the noise reduction requirements.

[0030] In one embodiment, the area of ​​the sound absorbing port 1 is greater than or equal to a first preset area, and the size of the first preset area is the lower limit of the area that allows the noise audio of the integrated stove in the target noise frequency range to pass through; specifically, the size of the first preset area is not less than 2 cm 2 The sound-absorbing opening 1 in the traditional noise reduction structure 7 is usually a micro-perforation, which is easily blocked by oil stains after long-term use, affecting the noise reduction effect. In addition, the target noise frequency range that can be processed by the micro-perforation is narrow, and the noise reduction effect is limited. This embodiment adopts a large-area sound-absorbing opening 1. On the one hand, it can make the target noise enter the noise reduction structure 7 to a greater extent for noise reduction processing. Specifically, the target noise frequency range is 500-2000Hz, which can process a wide range of noise and achieve ultra-wideband noise reduction with better noise reduction effect. On the other hand, the noise reduction structure 7 of the present application adopts a large-area sound-absorbing opening 1 to avoid being blocked by oil stains.

[0031] Furthermore, the sound absorbing opening 1 can be a rectangle, diamond, square, triangle or other irregular shapes, which are not limited here and can be selected according to the actual application scenario; preferably, the sound absorbing opening 1 is set in a rectangular shape, so that on the one hand, the processing technology is simple, and on the other hand, compared with the circular shape, the rectangular opening rate is higher, and the utilization rate of the sound absorbing board is higher. Of course, in other embodiments, the sound absorbing opening 1 can also be other shapes that meet the requirements.

[0032] In one embodiment, the sound absorbing panel includes a bottom sound absorbing panel 2 and a side wall sound absorbing panel 3. The sound absorbing surfaces of the bottom sound absorbing panel 2 and the side wall sound absorbing panel 3 are both arranged toward the centrifugal fan 8. The non-sound absorbing panel in the noise reduction structure 7 is defined as a connecting panel (not marked in the figure). The sound absorbing panel and the connecting panel together enclose a sound absorbing cavity. Furthermore, the side wall sound absorbing panel 3 can be arranged in multiple pieces, which can be specifically arranged according to the noise reduction requirements of the integrated stove. While ensuring the stability of the noise reduction structure 7, as many side wall sound absorbing panels 3 as possible can be arranged to improve the noise reduction effect.

[0033] Furthermore, the sound absorbing surface of the side wall sound absorbing panel 3 is an inclined surface, and the sound absorbing surface is inclined relative to the bottom sound absorbing panel 2. In this way, the noise audio can be effectively diverted so that as much noise audio as possible enters the noise reduction structure 7, and the area of ​​the sound absorbing surface of the side wall sound absorbing panel 3 is increased, thereby further improving the noise reduction effect of the noise reduction structure 7.

[0034] The working process of a noise reduction structure 7 applied to an integrated stove provided in the embodiment of the utility model is as follows: the noise reduction structure 7 in the embodiment of the utility model is arranged inside the bellows 9, and the noise reduction structure 7 is arranged in the interval between the centrifugal fan 8 and the top plate 4 and connected to the top plate 4. When the integrated stove is working, the centrifugal fan 8 in the fan system rotates to suck the oil smoke into the bellows 9 of the fan system through the air suction port. The noises of different frequencies generated during the operation of the centrifugal fan 8 and the smoking process enter the interior of the noise reduction structure 7 through the sound absorption port 1 on the bottom sound absorption board 2 and the side wall sound absorption board 3, and are absorbed by the sound absorption port 1 and / or the sound absorption material body in the sound absorption cavity, thereby achieving a good noise reduction effect.

[0035] In addition, an embodiment of the present invention further provides an integrated stove (not shown in the figure), which includes the aforementioned fan system.

[0036] The following introduces the preferred embodiments of the present application in combination with the above-mentioned specific implementation methods. The preferred embodiments of the present application provide a noise reduction structure applied to an integrated stove and a fan system.

[0037] Example 1

[0038] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The noise reduction structure 7 includes a bottom sound absorbing panel 2, a side wall sound absorbing panel 3 and a connecting panel (not marked in the figure). In this embodiment, the side wall sound absorbing panel 3 is set as one piece, and the connecting panel is set as three pieces. The bottom sound absorbing panel 2, the side wall sound absorbing panel 3 and the connecting panel enclose a sound absorbing cavity. A plurality of sound absorbing ports 1 are provided on the bottom sound absorbing panel 2 and the side wall sound absorbing panel 3. The sound absorbing ports 1 are connected to the sound absorbing cavity. The size of a single sound absorbing port 1 is 40x28mm, and the sound absorbing port 1 is rectangular. On the one hand, the large-area sound absorbing port 1 can allow the target noise to enter the interior of the noise reduction structure 7 to a greater extent for noise reduction treatment, and can process a wide range of noise to achieve ultra-wideband noise reduction, and the noise reduction effect is better; on the other hand, the large-area sound absorbing port 1 can avoid being blocked by oil stains, and avoid the oil stains from having an adverse effect on the noise reduction effect. On the one hand, the rectangular sound absorbing port 1 has a simple processing technology, and on the other hand, the opening rate on the sound absorbing panel is high, and the utilization rate of the sound absorbing panel is high. The sound absorbing opening 1 of the present embodiment is filled with a sound absorbing material body. The material of the sound absorbing material body in the present embodiment is polyurethane, which can effectively absorb noise audio and achieve a better noise reduction effect.

[0039] Reference Figure 4The sound-absorbing surface of the side wall sound-absorbing panel 3 is an inclined surface, and the sound-absorbing surface is inclined relative to the bottom sound-absorbing panel 2. In this way, the noise audio can be effectively diverted so that as much noise audio as possible enters the noise reduction structure 7, and the area of ​​the sound-absorbing surface of the side wall sound-absorbing panel 3 is increased, thereby further improving the noise reduction effect of the noise reduction structure 7. In this embodiment, the size of the noise reduction structure 7 is 60 cm, the width is 8.5 cm, and the depth is 1.8 cm.

[0040] Example 2

[0041] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that the sound absorbing material body in this embodiment is arranged on the bottom sound absorbing board 2, the side wall sound absorbing board 3 and the inner wall of the connecting board.

[0042] Example 3

[0043] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that the sound absorbing material body in this embodiment is filled in the space in the sound absorbing cavity and fills up the space in the sound absorbing cavity.

[0044] Example 4

[0045] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The same points as those in Example 1 are not described in detail. The difference from Example 1 is that in this embodiment, in the sound absorbing openings 1 on the bottom sound absorbing panel 2 and the side wall sound absorbing panel 3, the bottom sound absorbing panel 2, the side wall sound absorbing panel 3 and the inner side wall of the connecting panel and the space in the sound absorbing cavity are all provided with sound absorbing material bodies, and the space in the sound absorbing cavity is filled. In this way, the sound absorbing material bodies at multiple positions work together to effectively absorb the noise audio and achieve a better noise reduction effect.

[0046] Example 5

[0047] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that in this embodiment, two side wall sound absorbing panels 3 are provided, and two connecting panels are provided. Therefore, the number of sound absorbing ports 1 is increased, and the amount of sound absorbing material body is also increased, which further promotes the noise audio to enter the noise reduction mechanism through the sound absorbing port 1. The sound absorbing material body effectively absorbs the noise audio, thereby further improving the noise reduction effect of the noise reduction structure 7.

[0048] Example 6

[0049] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4The similarities with Example 1 are not repeated here. The difference from Example 1 is that in this embodiment, three side wall sound absorbing panels 3 are provided, and one connecting plate is provided. Therefore, the number of sound absorbing ports 1 is increased, and the amount of sound absorbing material body is also increased, which further promotes the noise audio to enter the interior of the noise reduction mechanism through the sound absorbing port 1. The sound absorbing material body effectively absorbs the noise audio, thereby further improving the noise reduction effect of the noise reduction structure 7.

[0050] Example 7

[0051] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that in this embodiment, four side wall sound absorbing panels 3 are provided, so the number of sound absorbing ports 1 is increased, and the amount of sound absorbing material body is also increased, which further promotes the noise audio to enter the noise reduction mechanism through the sound absorbing port 1. The sound absorbing material body effectively absorbs the noise audio, thereby further improving the noise reduction effect of the noise reduction structure 7.

[0052] Example 8

[0053] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that the shape of the sound absorbing port 1 in this embodiment is set to be a square.

[0054] Example 9

[0055] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that the shape of the sound absorbing port 1 in this embodiment is set to be a diamond shape.

[0056] Example 10

[0057] A noise reduction structure 7 applied to an integrated stove, referring to Figure 4 The similarities with Example 1 are not repeated here. The difference from Example 1 is that the size of a single sound absorbing port 1 in this embodiment is 14x14mm.

[0058] Embodiment 11

[0059] A fan system, referring to Figure 1-4, including a bellows 9, a centrifugal fan 8 and any one of the noise reduction structures 7 in embodiments 1-10, wherein the centrifugal fan 8 and the noise reduction structure 7 are both arranged inside the bellows 9. The bellows 9 includes a front plate (not marked in the figure), a back plate 5, a first side plate (not marked in the figure), a second side plate (not marked in the figure), a top plate 4 and a bottom plate (not marked in the figure). Among them, the top plate 4 is used to connect the first side plate, the second side plate and the front plate, and form an air inlet 6 with the back plate 5. The noise reduction structure 7 is arranged in the interval between the centrifugal fan 8 and the top plate 4 and is connected to the top plate 4. This embodiment adopts screw connection for easy disassembly and cleaning. The side wall of the top plate 4 close to the centrifugal fan 8 is arranged opposite to the bottom sound absorbing board 2 in the noise reduction structure 7. The side wall of the top plate 4 close to the centrifugal fan 8 and the bottom sound absorbing board 2, the side wall sound absorbing board 3 and the connecting plate in the noise reduction structure 7 together enclose the sound absorbing cavity in the noise reduction structure 7.

[0060] Reference Figure 1-4 The sound absorbing surfaces of the bottom sound absorbing board 2 and the side wall sound absorbing board 3 in the noise reduction structure 7 are both arranged toward the centrifugal fan 8. The noise audio generated by the centrifugal fan 8 when working enters the noise reduction structure 7 through the sound absorbing openings 1 on the sound absorbing surfaces of the bottom sound absorbing board 2 and the side wall sound absorbing board 3 for noise reduction processing. The projection area of ​​the noise reduction structure 7 on the air inlet surface where the air inlet 6 is located does not interfere with the air inlet 6, so that the air inlet of the air inlet 6 is not affected, and a good noise reduction effect can be achieved while ensuring a good oil fume absorption effect.

[0061] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A noise reduction structure (7) applied to an integrated stove, the integrated stove comprising a bellows (9) and a centrifugal fan (8), the centrifugal fan (8) and the noise reduction structure (7) being both arranged in the bellows (9), characterized in that: The noise reduction structure (7) comprises: At least one sound absorbing board, the sound absorbing board being provided with a plurality of sound absorbing openings (1), the area of ​​the sound absorbing openings (1) being greater than or equal to a first preset area, the size of the first preset area being the lower limit of the area for allowing the noise audio of the integrated stove within a target noise frequency range to pass through; A sound absorbing cavity, the sound absorbing cavity being in communication with the sound absorbing opening (1), and a sound absorbing material body being arranged in the sound absorbing cavity and / or the sound absorbing opening (1).

2. A noise reduction structure (7) applied to an integrated stove according to claim 1, characterized in that: The first preset area is not less than 2 cm 2 .

3. A noise reduction structure (7) applied to an integrated stove according to claim 1, characterized in that: The sound absorbing panel comprises a side wall sound absorbing panel (3) and a bottom sound absorbing panel (2), wherein the side wall sound absorbing panel (3) and the bottom sound absorbing panel (2) enclose the sound absorbing cavity, and the sound absorbing surface of the bottom sound absorbing panel (2) is arranged toward the centrifugal fan (8).

4. The noise reduction structure (7) applied to an integrated stove according to claim 3, characterized in that: The sound absorbing surface of the side wall sound absorbing panel (3) is an inclined surface, and the sound absorbing surface is arranged obliquely relative to the bottom sound absorbing panel (2) and faces the centrifugal fan (8).

5. A noise reduction structure (7) applied to an integrated stove according to any one of claims 1 to 4, characterized in that: The bellows (9) comprises a top plate (4) and a back plate (5); an air inlet (6) of the bellows (9) is formed between the top plate (4) and the back plate (5); the noise reduction structure (7) is arranged in the gap between the top plate (4) and the centrifugal fan (8) and is connected to the top plate (4); a projection area of ​​the noise reduction structure (7) on the air inlet surface where the air inlet (6) is located does not interfere with the air inlet (6).

6. A noise reduction structure (7) applied to an integrated stove according to any one of claims 1 to 4, characterized in that: The sound absorbing material body in the sound absorbing cavity is arranged on the side wall of the sound absorbing board.

7. A noise reduction structure (7) applied to an integrated stove according to any one of claims 1 to 4, characterized in that: The sound absorbing material body fills the space in the sound absorbing cavity.

8. A noise reduction structure (7) applied to an integrated stove according to any one of claims 1 to 4, characterized in that: The sound absorbing opening (1) is arranged in a rectangular shape.

9. A fan system, characterized in that: It comprises a bellows (9), a centrifugal fan (8) and a noise reduction structure (7) applied to an integrated stove as described in any one of claims 1 to 8, wherein the centrifugal fan (8) and the noise reduction structure (7) are both arranged in the bellows (9).

10. An integrated stove, characterized in that: Includes the fan system as described in claim 9.

Images