Drying oven sound insulation device

Abstract

The utility model discloses a drying oven sound insulation device which comprises a sound insulation cover used for wrapping a fan motor, the sound insulation cover comprises an upper sound insulation flow guide layer, a middle sound insulation main cavity layer and a lower sound insulation flow guide layer, and the middle sound insulation main cavity layer is used for containing the fan motor. And the upper sound insulation flow guide layer and the lower sound insulation flow guide layer are located at the top and the bottom of the fan motor correspondingly, the upper sound insulation flow guide layer and the lower sound insulation flow guide layer are each provided with a through type flow guide structure, and the flow guide structures are used for enabling the middle sound insulation main cavity layer to communicate with the outside. According to the oven sound insulation device, the through-type sound insulation cover is adopted, the sound insulation requirement is met, meanwhile, the fan motor is facilitated to form the airflow chimney effect, heat dissipation of the motor is accelerated, and normal and stable operation of the fan is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrode drying technology, specifically to a sound insulation device for an oven. Background Technology

[0002] In the manufacturing process of lithium batteries, the electrodes and separators need to be heated and dried in an oven after coating. The drying air in the oven needs to be circulated by a circulating fan and an exhaust fan to ensure continuous airflow in the system. During the operation of the fans, noise levels in the area where the oven is located often exceed the specified limits.

[0003] Current drying ovens are generally composed of multiple oven sections connected in series. Each oven section has an independent air intake fan and exhaust fan. The noise from multiple fans may have a cumulative effect, causing the noise in the area to increase further and potentially causing hearing loss to the operators in the area.

[0004] The existing measure is to install a fully enclosed soundproof cover to isolate fan noise. While this solution can isolate fan noise to a certain extent, it has the following problems when used in ovens:

[0005] 1. Its sound insulation structure is not suitable for drying ovens;

[0006] 2. Its heat dissipation effect is too poor, affecting the normal operation of the fan;

[0007] 3. The ambient temperature in the drying oven can reach 30-60℃, and the materials used in the drying oven have poor adaptability to the environment.

[0008] 4. The sound insulation materials were not optimized for fan noise. Utility Model Content

[0009] In order to overcome the shortcomings of the existing technology, this utility model provides a sound insulation device for an oven, which adopts a through-type sound insulation cover, which not only meets the sound insulation requirements, but also helps the fan motor to form an airflow chimney effect, accelerates the heat dissipation of the motor, and ensures the normal and stable operation of the fan.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] A sound insulation device for an oven includes a soundproof cover for enclosing a fan motor. The soundproof cover includes an upper soundproof guide layer, a middle soundproof main cavity layer, and a lower soundproof guide layer. The middle soundproof main cavity layer is used to accommodate the fan motor. The upper and lower soundproof guide layers are located at the top and bottom of the fan motor, respectively. Both the upper and lower soundproof guide layers are provided with a through-type guide structure, which is used to connect the middle soundproof main cavity layer with the outside.

[0012] As a further improvement to the above technical solution, the upper sound insulation and diversion layer, the middle sound insulation main cavity layer and the lower sound insulation and diversion layer all include a supporting frame and internal sound insulation cotton disposed inside the supporting frame.

[0013] As a further improvement to the above technical solution, the internal sound insulation cotton is polyurethane sound insulation cotton, and the internal sound insulation cotton adopts a wave shape or a pyramid arrangement shape; the supporting frame is a metal plate or an acrylic plate.

[0014] As a further improvement to the above technical solution, the flow guiding structure includes multiple flow guiding holes arranged side by side.

[0015] As a further improvement to the above technical solution, the guide hole is in the shape of a vertical strip.

[0016] As a further improvement to the above technical solution, the shape of the guide hole is folded.

[0017] As a further improvement to the above technical solution, the airflow guiding structure includes a loop-shaped airflow guiding channel, which includes a first air outlet disposed on the outside of the upper / lower sound insulation airflow guiding layer, a second air outlet disposed on the inside of the upper / lower sound insulation airflow guiding layer, and an airflow guiding groove connecting the first air outlet and the second air outlet.

[0018] As a further improvement to the above technical solution, the upper sound insulation and diversion layer is detachably connected to the middle sound insulation main cavity layer, and the middle sound insulation main cavity layer is detachably connected to the lower sound insulation and diversion layer.

[0019] As a further improvement to the above technical solution, a mounting block is provided on the top of the soundproof cover, and the mounting hole protrudes from the soundproof cover.

[0020] As a further improvement to the above technical solution, the soundproof cover is provided with a plurality of fixed terminals, which are respectively located in the upper, middle and lower parts of the soundproof cover, and the fixed terminals are located on the open side of the soundproof cover.

[0021] The beneficial effects of this utility model are:

[0022] 1. The oven sound insulation device of this utility model adopts a through-type sound insulation cover, which not only meets the sound insulation requirements, but also helps the fan motor to form an airflow chimney effect, accelerates the heat dissipation of the motor, and ensures the normal and stable operation of the fan.

[0023] 2. The oven sound insulation device of this utility model can be suspended and installed on the side of the oven by setting the mounting block protruding from the sound insulation cover. Compared with other types of sound insulation covers, the sound insulation cover of this utility model has a better effect on the oven structure.

[0024] 3. The sound-absorbing material inside the soundproof cover of this utility model is polyurethane, which can be made into an array pyramid shape or a wave shape to increase the sound absorption capacity.

[0025] 4. The soundproof cover support frame of this utility model is made of metal plate or acrylic plate, which can isolate some high-frequency noise, and also make the soundproof cover have high strength, an elegant appearance and easy cleaning. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the integrated soundproof cover in an embodiment of this utility model;

[0028] Figure 2 yes Figure 1 A sectional view;

[0029] Figure 3 This is a schematic diagram of the split-type soundproof cover in an embodiment of this utility model;

[0030] Figure 4 yes Figure 3 A sectional view;

[0031] Figure 5 This is a schematic diagram of the folded guide hole in an embodiment of this utility model;

[0032] Figure 6 This is a schematic diagram of the loop-shaped flow guide channel in an embodiment of this utility model;

[0033] Figure 7 This is a schematic diagram of the integrated sound insulation cover applied to an oven in this embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the application of the split-structure soundproof cover to the oven in an embodiment of this utility model.

[0035] Attached reference numerals: 100, drying oven; 200, fan motor; 300, soundproof enclosure;

[0036] 301. Upper sound insulation and airflow guiding layer; 302. Middle sound insulation main cavity layer; 303. Lower sound insulation and airflow guiding layer; 304. Airflow guiding hole; 305. Fixed terminal; 306. Mounting block; 307. First air outlet; 308. Airflow guiding groove; 309. Second air outlet; 310. Support frame; 311. Internal sound insulation cotton. Detailed Implementation

[0037] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / installations can use accessories such as screws and bolts, or can be directly connected by welding, bonding, etc. The various technical features in this utility model can be combined interactively without contradicting each other.

[0038] Reference Figure 7 and Figure 8 The basic embodiment of this utility model provides a sound insulation device for an oven, including a sound insulation cover 300. One side of the sound insulation cover 300 is open. The sound insulation cover 300 covers the fan motor 200 through the open side, thereby achieving the function of sound insulation.

[0039] Specifically, refer to Figures 1-4 The soundproof cover 300 includes an upper soundproof guide layer 301, a middle soundproof main cavity layer 302, and a lower soundproof guide layer 303. The middle soundproof main cavity layer 302 is used to accommodate the fan motor 200. The upper soundproof guide layer 301 and the lower soundproof guide layer 303 are located at the top and bottom of the fan motor 200, respectively. Both the upper soundproof guide layer 301 and the lower soundproof guide layer 303 are provided with a through-type guide structure. The guide structure is used to connect the middle soundproof main cavity layer 302 with the outside. This creates a through-type structure between the top and bottom of the soundproof cover 300, which is beneficial for the fan motor 200 to form an airflow chimney effect, accelerate the heat dissipation of the motor, and ensure the normal and stable operation of the fan.

[0040] This utility model's soundproof cover 300 utilizes the principle of rising hot airflow and the chimney effect to design a through-type soundproof cover 300. The heat dissipation effect of the constructed soundproof cover 300 was tested. During the test, the ambient temperature was 38℃. The average temperature rise of the motor without soundproofing was 51.6℃, and the average temperature rise of the motor after soundproofing was 58.1℃. After adding the soundproof cover 300, the motor temperature increased slightly, but it was still within the normal operating range.

[0041] In this embodiment, refer to Figures 4-6The soundproof cover 300 includes a support frame 310 and an inner soundproof cotton 311 disposed inside the support frame 310. Specifically, the inner soundproof cotton 311 is polyurethane soundproof cotton, and the support frame 310 is a metal plate, which plays the role of sound insulation and vibration reduction.

[0042] In actual environments, analysis of the noise generation mechanism of fans reveals that fan noise mainly consists of wind noise and mechanical noise. Wind noise is generally concentrated in the mid-frequency range above 500Hz, while mechanical noise is generally concentrated in the low-frequency range below 20Hz. Based on the characteristics of fan noise, this embodiment preferably uses polyurethane sound insulation cotton with good mid-to-low frequency sound absorption as the internal sound absorption material, and selects a metal plate with good high-frequency vibration isolation effect as the external sound insulation cover 300 frame.

[0043] The sound insulation effect of the soundproof cover 300 in this embodiment was tested. The ambient noise was 60 dBA. Before sound insulation, the fan noise was about 81.2 dBA. After sound insulation, the fan noise was about 72.1 dBA. After adding the soundproof cover 300, the noise decreased by 9.1 dBA, and the sound insulation efficiency reached 42.9%, which is obvious.

[0044] In other embodiments, the internal sound insulation cotton 311 may also be made of sound-absorbing materials such as polyester fiber, rock wool, and glass wool, and the supporting frame 310 may be made of stainless steel plate or high-strength materials such as acrylic plate.

[0045] In a preferred embodiment, the internal sound insulation cotton 311 is in a wave shape or in the shape of several pyramid structure arrays, which can increase the sound absorption capacity and improve the sound insulation effect of the device.

[0046] In this embodiment, the soundproof cover 300 can adopt an integrated structure or a split structure, wherein, referring to Figure 3 , Figure 4 or Figure 8 In the split-type soundproof cover 300, the upper soundproof guide layer 301 and the middle soundproof main cavity layer 302 are detachably connected, and the middle soundproof main cavity layer 302 and the lower soundproof guide layer 303 are detachably connected. This allows the upper soundproof guide layer 301, the middle soundproof main cavity layer 302, and the lower soundproof guide layer 303 of the soundproof cover 300 to be disassembled, making installation and maintenance more convenient. However, the split-type soundproof cover 300 requires support and fixation at its bottom. (Refer to...) Figure 1 , Figure 2 or Figure 7The soundproof cover 300 with an integrated structure has a mounting block 306 on its top, and the mounting hole protrudes from the soundproof cover 300. In this way, the soundproof cover 300 has its own upper fixing structure and does not require additional support. The soundproof cover 300 can be suspended and installed on the side of the oven 100. Compared with other types of soundproof covers 300, the soundproof cover 300 of this utility model has a better effect when used in the oven 100.

[0047] In addition, multiple fixing terminals 305 are added to the side of the soundproof cover 300, which has both an integrated structure and a split structure, for the vertical wall of the oven 100. The multiple fixing terminals 305 are located at the upper, middle and lower parts of the soundproof cover 300, and the fixing terminals 305 are located on the open side of the soundproof cover 300. The fixing terminals 305 are connected to the side wall of the oven 100 to improve the stability of the soundproof cover 300 after installation.

[0048] In this embodiment, different shapes of airflow guiding structures can be used to meet different sound insulation and heat dissipation requirements, for example:

[0049] Method 1, refer to Figure 2 or Figure 4 The airflow guiding structure includes multiple airflow guiding holes 304 arranged side by side. The airflow guiding holes 304 are vertical strip-shaped. This airflow guiding structure can increase the airflow and thus improve the heat dissipation effect of the soundproof cover 300.

[0050] Method 2, refer to Figure 5 The difference between this method and method 1 is that the guide hole 304 is folded. This guide structure reduces the airflow, and the heat dissipation effect of the soundproof cover 300 is not as good as that of method 1. However, the soundproof cover 300 has a better sound insulation effect than method 1. Furthermore, based on the characteristics of the fan noise wavelength, the folded guide hole 304 is designed with a 135° angle for optimal sound insulation. The angle can be adjusted as needed for other operating conditions.

[0051] Method 3, refer to Figure 6 The airflow guiding structure includes a U-shaped airflow guiding channel. The U-shaped airflow guiding channel at the top of the soundproof cover 300 includes a first air vent 307 located on the outside of the upper soundproof airflow guiding layer 301, a second air vent 309 located on the inside of the upper soundproof airflow guiding layer 301, and a guide groove 308 connecting the first air vent 307 and the second air vent 309. The U-shaped airflow guiding channel at the bottom of the soundproof cover 300 includes a first air vent 307 located on the outside of the lower soundproof airflow guiding layer 303, a second air vent 309 located on the inside of the lower soundproof airflow guiding layer 303, and a guide groove 308 connecting the first air vent 307 and the second air vent 309. With this airflow guiding structure, the airflow will be smaller, and the heat dissipation effect of the soundproof cover 300 will not be as good as that of method 1 and method 2. However, the sound insulation effect of the soundproof cover 300 will be better than that of method 1 and method 2.

[0052] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A sound insulation device for an oven, comprising a sound insulation cover for enclosing a fan motor, characterized in that: The soundproof enclosure includes an upper soundproof guide layer, a middle soundproof main cavity layer, and a lower soundproof guide layer. The middle soundproof main cavity layer is used to accommodate the fan motor. The upper and lower soundproof guide layers are located at the top and bottom of the fan motor, respectively. Both the upper and lower soundproof guide layers are provided with a through-type guide structure, which is used to connect the middle soundproof main cavity layer with the outside.

2. The oven sound insulation device according to claim 1, characterized in that: The upper sound insulation and diversion layer, the middle sound insulation main cavity layer, and the lower sound insulation and diversion layer all include a supporting frame and internal sound insulation cotton disposed inside the supporting frame.

3. The oven sound insulation device according to claim 2, characterized in that: The internal sound insulation cotton is polyurethane sound insulation cotton, and the internal sound insulation cotton adopts a wave shape or a pyramid arrangement shape; the supporting frame is a metal plate or an acrylic plate.

4. The oven sound insulation device according to claim 1, characterized in that: The flow guiding structure includes multiple flow guiding holes arranged side by side.

5. The oven sound insulation device according to claim 4, characterized in that: The flow guide hole is a straight through hole structure in the shape of a strip.

6. The oven sound insulation device according to claim 4, characterized in that: The guide hole has a strip-shaped folded hole structure.

7. The oven sound insulation device according to claim 1, characterized in that: The airflow guiding structure includes a loop-shaped airflow guiding channel, which includes a first air outlet located on the outside of the upper / lower sound insulation airflow guiding layer, a second air outlet located on the inside of the upper / lower sound insulation airflow guiding layer, and an airflow guiding groove connecting the first air outlet and the second air outlet.

8. The oven sound insulation device according to claim 1, characterized in that: The upper sound insulation and diversion layer is detachably connected to the middle sound insulation main cavity layer, and the middle sound insulation main cavity layer is detachably connected to the lower sound insulation and diversion layer.

9. The oven sound insulation device according to claim 1, characterized in that: The top of the soundproof cover is provided with a mounting block, and the mounting hole protrudes from the soundproof cover.

10. The oven sound insulation device according to claim 1, characterized in that: The soundproof cover is provided with multiple fixed terminals, which are located at the top, middle and bottom of the soundproof cover, and the fixed terminals are located on the open side of the soundproof cover.

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