Fan with sound absorption and air guide functions

Abstract

The utility model relates to a fan with sound absorption and air guide functions, and belongs to the field of kitchen appliances. The noise reduction device comprises a volute, an impeller and a motor, the impeller and the motor are both located in the volute, the motor is installed on the volute, the impeller is installed on a motor shaft of the motor, the noise reduction device is structurally characterized by further comprising a noise reduction structure and an air guide structure, the noise reduction structure is arranged on the side portion of the volute, the air guide structure is arranged on the rear portion of the volute, and the noise reduction structure is arranged on the side portion of the volute. The volute comprises a surrounding plate, a front plate and a rear plate, the front plate and the rear plate are installed on the two sides of the surrounding plate respectively, a motor support is arranged on the rear plate, the motor is installed on the motor support, the sound absorption structure comprises sound absorption holes, a sound absorption plate and a sound absorption plate outer cover, the sound absorption holes are formed in the surrounding plate, the sound absorption plate covers the sound absorption holes, and the sound absorption plate outer cover covers the sound absorption holes. The acoustic board is covered with the acoustic board outer cover, a sound absorption area is arranged on the coaming, the sound absorption area is vertically arranged, and the sound absorption holes are formed in the sound absorption area.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan with sound absorption and air guide functions, belonging to the field of kitchen appliances. BACKGROUND

[0002] The fan in the range hood is used to extract oil fume during cooking, and most of the current fans do not have a sound absorption structure, resulting in large noise during operation of the fan. In the prior art, only a baffle is arranged on the back plate of the volute of the fan, and the height of the baffle is relatively low. Since no air guide fin is arranged, a closed air guide ring cannot be formed, which causes the flue gas to flow outward, increasing the vortex with the impeller blade inlet, and generating large noise. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned deficiencies in the prior art and providing a fan with sound absorption and air guide functions with a reasonable structure design.

[0004] The utility model provides a fan with sound absorption and air guide functions, which solves the above-mentioned problems by adopting the technical scheme of: the fan with sound absorption and air guide functions comprises a volute, an impeller and a motor, the impeller and the motor are located in the volute, the motor is installed on the volute, and the impeller is installed on the motor shaft of the motor.

[0005] Further, the volute comprises a surrounding plate, a front plate and a back plate, the front plate and the back plate are installed on both sides of the surrounding plate respectively, the back plate is provided with a motor support, and the motor is installed on the motor support.

[0006] Further, the sound absorption structure comprises a sound absorption hole, a sound absorption plate and a sound absorption plate cover, the sound absorption hole is arranged on the surrounding plate, the sound absorption plate covers the sound absorption hole, and the sound absorption plate cover covers the sound absorption plate.

[0007] Further, the surrounding plate is provided with a sound absorption area, the sound absorption area is vertically arranged, and the sound absorption hole is arranged in the sound absorption area.

[0008] Further, the air guide structure comprises an air guide hole, an air guide plate and an air guide fin, the air guide hole is arranged on the back plate, the air guide plate is arranged on the outer side of the air guide hole, and an air guide fin is arranged between adjacent air guide plates.

[0009] Further, the air guide hole and the air guide plate are arranged correspondingly.

[0010] Further, the air guide plate and the air guide fin form an air guide closed air guide ring.

[0011] Compared with the prior art, the fan has the following advantages: the sound-absorbing holes are arranged on the side of the surrounding plate, and the sound-absorbing plates are arranged on the sound-absorbing holes, so that the noise generated by the impeller during operation can be absorbed by the sound-absorbing plates through the sound-absorbing holes, thereby achieving the purpose of reducing noise; the air guide plates are arranged on the rear plate, and the air guide plates are welded between adjacent air guide plates, thereby forming a closed air guide ring, so that the flue gas can enter the air guide ring through the air guide holes, the air flow can be better guided into the impeller, the vortex at the inlet of the impeller blade channel is reduced, and the noise reduction effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a three-dimensional structure schematic diagram of the fan with sound-absorbing and air guiding functions according to an embodiment of the utility model.

[0013] Figure 2 is an explosion structure schematic diagram of the fan with sound-absorbing and air guiding functions according to an embodiment of the utility model.

[0014] Figure 3 is a three-dimensional structure schematic diagram of the fan with sound-absorbing and air guiding functions according to an embodiment of the utility model.

[0015] Figure 4 is a three-dimensional structure schematic diagram of the rear plate according to an embodiment of the utility model.

[0016] Figure 5 is an explosion structure schematic diagram of the rear plate according to an embodiment of the utility model.

[0017] In the drawing: volute 1, impeller 2, motor 3, sound-absorbing structure 4, air guiding structure 5,

[0018] Surrounding plate 11, front plate 12, rear plate 13, motor support 14,

[0019] Sound-absorbing hole 41, sound-absorbing plate 42, sound-absorbing plate cover 43,

[0020] Air guide hole 51, air guide plate 52, air guide plate 53. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings and through embodiments, and the following embodiments are the explanation of the utility model, and the utility model is not limited to the following embodiments.

[0022] EMBODIMENT

[0023] Referring to Figures 1 to 5It is to be understood that the structure, proportion, size and the like shown in the drawings of the present application are only used to illustrate the content disclosed in the present application, so as to be understood and read by those skilled in the art, and do not limit the implementation of the present application, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed in the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present application are only used for clear description, and do not limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation of the present application.

[0024] The fan with sound absorption and air guide function in the embodiment comprises a volute 1, an impeller 2, a motor 3, a sound absorption structure 4 and an air guide structure 5. The impeller 2 and the motor 3 are located in the volute 1. The motor 3 is installed on the volute 1. The impeller 2 is installed on the motor shaft of the motor 3. The sound absorption structure 4 is arranged on the side of the volute 1. The air guide structure 5 is arranged on the rear of the volute 1.

[0025] The volute 1 in the embodiment comprises a surrounding plate 11, a front plate 12 and a rear plate 13. The front plate 12 and the rear plate 13 are respectively installed on both sides of the surrounding plate 11. The motor support 14 is arranged on the rear plate 13. The motor 3 is installed on the motor support 14.

[0026] The sound absorption structure 4 in the embodiment comprises a sound absorption hole 41, a sound absorption plate 42 and a sound absorption plate cover 43. The sound absorption hole 41 is arranged on the surrounding plate 11. The sound absorption plate 42 covers the sound absorption hole 41. The sound absorption plate cover 43 covers the outside of the sound absorption plate 42. The sound absorption region is arranged vertically on the surrounding plate 11. The sound absorption hole 41 is arranged in the sound absorption region.

[0027] The air guide structure 5 in the embodiment comprises an air guide hole 51, an air guide plate 52 and an air guide sheet 53. The air guide hole 51 is arranged on the rear plate 13. The air guide plate 52 is arranged on the outside of the air guide hole 51. The air guide sheet 53 is arranged between adjacent air guide plates 52. The air guide hole 51 is arranged corresponding to the air guide plate 52. The air guide plate 52 and the air guide sheet 53 form an air guide closed air guide ring.

[0028] Specifically, when the fan is running, the impeller 2 is driven to rotate in the volute 1 by the motor 3. The sound absorption structure 4 arranged on the surrounding plate 11 can make the noise generated by the impeller 2 during operation pass through the sound absorption hole 41 and enter the sound absorption plate 42, and then be absorbed by the sound absorption plate 42, thereby reducing the noise of the impeller 2 during operation.

[0029] The sound absorption holes 41 are uniformly distributed on the wall of the enclosure 11, the bayonet of the sound absorption plate cover 43 is fixed on the enclosure 11, the sound absorption plate 42 covers the sound absorption holes 41 to form a cavity, the sound absorption plate 42 (with a sound absorption coefficient table) is arranged in the cavity, and the sound absorption structure 4 is formed on the wall of the air duct after installation, so that the air duct is noise-reduced.

[0030] The sound absorption material used in the sound absorption plate 42 is as follows.

[0031]

[0032] The air guide holes 51 and the air guide plates 52 are arranged on the back plate 13, the air guide sheets 53 are riveted between two adjacent air guide plates 52, and a closed air guide ring is formed, so that the flue gas enters the air guide ring through the air guide holes 51, the air flow can be better guided into the impeller 2, the vortex at the inlet of the impeller blade channel is reduced, and the noise reduction effect is achieved.

[0033] In addition, it should be noted that the specific embodiments described in the specification, the shape of the components, the name taken, etc. can be different, and the above description in the specification is only an example of the structure of the utility model. Any equivalent change or simple change made according to the structure, features and principles described in the utility model patent concept is included in the protection scope of the utility model patent. The person skilled in the art of the utility model can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the structure of the utility model or exceed the range defined in the claims, and it should belong to the protection scope of the utility model.

Claims

1. A fan with sound absorption and air guiding functions, comprising a volute (1), an impeller (2), and a motor (3), wherein the impeller (2) and the motor (3) are both located inside the volute (1), the motor (3) is mounted on the volute (1), and the impeller (2) is mounted on the motor shaft of the motor (3), characterized in that: It also comprises a sound absorption structure (4) and a wind guide structure (5), the sound absorption structure (4) is arranged on the side of the volute (1), and the wind guide structure (5) is arranged on the back of the volute (1); The sound absorption structure (4) comprises sound absorption holes (41), sound absorption plates (42) and sound absorption plate covers (43), the sound absorption holes (41) are arranged on the coaming (11), the sound absorption plates (42) cover the sound absorption holes (41), and the sound absorption plate covers (43) cover the outside of the sound absorption plates (42); The wind guide structure (5) comprises wind guide holes (51), wind guide plates (52) and wind guide sheets (53), the wind guide holes (51) are arranged on the back plate (13), the wind guide plates (52) are arranged outside the wind guide holes (51), one wind guide sheet (53) is arranged between adjacent wind guide plates (52), and the wind guide plates (52) and the wind guide sheets (53) form a wind guide closed wind guide ring.

2. The fan with sound absorption and air guide functions according to claim 1, characterized in that: The volute (1) comprises a coaming (11), a front plate (12) and a back plate (13), the front plate (12) and the back plate (13) are respectively arranged on the two sides of the coaming (11), the back plate (13) is provided with a motor support (14), and the motor (3) is arranged on the motor support (14).

3. The fan with sound absorption and air guide functions according to claim 1, characterized in that: The coaming (11) is provided with a sound absorption area, the sound absorption area is vertically arranged, and the sound absorption holes (41) are arranged in the sound absorption area.

4. The fan with sound absorption and air guide functions according to claim 1, characterized in that: The wind guide holes (51) are correspondingly arranged with the wind guide plates (52).

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