Silencing device for high-speed fan of civil speed boat

Abstract

The utility model discloses a civil yacht high-speed fan silencer which comprises a silencing shell and a sound insulation lining, the silencing shell comprises a silencing left half shell and a silencing right half shell, the silencing left half shell and the silencing right half shell are spliced on the periphery of a fan shell, the silencing shell is cylindrical, a radial gap is formed between the silencing shell and the fan shell, and the sound insulation lining is arranged on the silencing shell. The sound insulation lining is filled in the radial gap; and a splicing part connecting piece is arranged at the splicing part of the left half silencing shell and the right half silencing shell, so that the left half silencing shell and the right half silencing shell are stabilized on the periphery of the fan shell. The fan shell is surrounded by the sound insulation lining and the silencing shell, noise generated by the fan is blocked, and the influence of the noise of the fan on personnel in the cabin is avoided.

Description

Technical Field

[0001] This utility model relates to ventilation equipment, specifically to axial flow fans. Background Technology

[0002] Civilian speedboats are equipped with a cabin containing ventilation equipment. Because speedboats need to achieve high speeds, their external structure must be designed for low or no wind resistance. Furthermore, due to moisture issues caused by wind and waves, the ventilation equipment is typically built into the cabin and connected to the cabin's ventilation ducts via flanges. However, since the ventilation equipment is built into the cabin, the noise generated during operation needs to be minimized to avoid excessively affecting the activities and rest of the people inside the cabin. Utility Model Content

[0003] The technical problem solved by this utility model is that the ventilation equipment of a civilian speedboat is built into the cabin, and the noise generated during operation needs to be reduced so as not to excessively affect the activities and rest of the people in the cabin.

[0004] To solve the above-mentioned technical problems, the present invention provides a noise reduction device for a high-speed fan in a civilian speedboat, comprising a noise reduction shell and a sound insulation liner. The noise reduction shell includes a left noise reduction shell and a right noise reduction shell, which are joined together on the periphery of the fan shell. The noise reduction shell is cylindrical, and there is a radial gap between the noise reduction shell and the fan shell. The sound insulation liner fills the radial gap. A joint connector is provided at the joint between the left and right noise reduction shells to stabilize the left and right noise reduction shells on the periphery of the fan shell.

[0005] The soundproof lining can be commonly used soundproofing cotton, or other soundproofing materials available in the prior art. The soundproof lining and the sound-absorbing outer shell surround the fan casing, blocking the noise generated by the fan and preventing the fan noise from affecting the people inside the cabin.

[0006] The sound-insulating lining includes a left half and a right half, which are joined together on the outer periphery of the fan casing. The sound-insulating lining is cylindrical. After the sound-insulating lining is joined to the outer periphery of the fan casing, a sound-absorbing outer shell is then joined to the outer periphery of the sound-insulating lining.

[0007] Alternatively, the splice connector is a U-shaped piece, with corresponding connection holes on the left and right half of the sound-absorbing shell. The two ends of the splice connector are engaged in the corresponding connection holes on the left and right half of the sound-absorbing shell to fix the left and right half of the sound-absorbing shell together and to press the sound-insulating liner onto the fan shell.

[0008] The edge of the silencing housing is equipped with a flange structure, and the flange structure has a first connection hole, which is aligned with a second connection hole on the flange of the fan housing. The flange of the fan housing is connected to the ventilation duct of the ship's cabin via a threaded connector, which also connects to the flange structure of the silencing housing, thus stabilizing the silencing housing on the fan housing.

[0009] As an improvement, the fan casing includes a guide vane structure comprising an outer guide vane ring and an inner guide vane ring, as well as a guide vane disposed between the outer and inner guide vane rings. The outer wall of the outer guide vane ring mates with the inner wall of the fan casing and is fixedly connected by a connector. The guide vane guides the airflow from the impeller, helping to reduce fan noise and achieve a noise reduction effect.

[0010] The motor is fitted into the inner ring of the guide vane, which has motor mounting holes. Connectors fitting into these holes secure the motor within the guide vane. Compared to existing motor support rods, this invention uses a guide vane structure to fix the motor to the fan housing, providing not only airflow guidance and noise reduction but also motor fixation.

[0011] Compared with the prior art, the present invention has the following technical effects:

[0012] First, this utility model adds a sound-insulating inner lining and a sound-absorbing outer shell without damaging the fan, thereby achieving the function of fan noise reduction;

[0013] Secondly, this utility model uses a guide vane structure to replace the motor support rod in the prior art, which has a good flow guiding and noise reduction effect. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 A schematic diagram of a high-speed fan for civilian speedboats;

[0016] Figure 2 for Figure 1 Exploded view;

[0017] Figure 3 This is a schematic diagram of the combined structure of motor 40, impeller 41 and guide vane structure 30;

[0018] Figure 4 for Figure 3 A diagram from another perspective;

[0019] Figure 5 for Figure 3 The main view.

[0020] Explanation of symbols in the diagram:

[0021] 10. Silencing housing; 101. Left half of the silencing housing; 102. Right half of the silencing housing; 103. Flange structure; 11. Connecting parts at the joint; 12. Connecting holes at the joint; 13. First connecting hole;

[0022] 20. Fan housing; 21. Flange of fan housing; 22. Second connection hole;

[0023] 30. Guide vane structure; 31. Outer ring of guide vane; 32. Inner ring of guide vane; 33. Guide vane; 34. Motor fixing hole;

[0024] 40. Motor; 41. Impeller; 42. Motor shaft;

[0025] 50. Filter screen. Detailed Implementation

[0026] Combination Figure 1 , Figure 2 A noise reduction device for a high-speed fan on a civilian speedboat includes a noise reduction outer shell 10 and a sound insulation liner. The noise reduction outer shell comprises a left noise reduction outer shell 101 and a right noise reduction outer shell 102, which are joined together on the periphery of the fan shell 20. The noise reduction outer shell is cylindrical, and there is a radial gap between the noise reduction outer shell and the fan shell. The sound insulation liner fills the radial gap. A joint connector 11 is provided at the joint between the left and right noise reduction outer shells to stabilize them on the periphery of the fan shell 20.

[0027] The sound insulation lining includes a left half sound insulation lining and a right half sound insulation lining. The left half sound insulation lining and the right half sound insulation lining are spliced ​​on the outer periphery of the fan housing 20. The sound insulation lining is cylindrical.

[0028] The splicing connector 11 is a U-shaped part. The left half shell 101 and the right half shell 102 of the sound-absorbing material are provided with corresponding splicing connection holes 12. The two ends of the splicing connector are engaged in the corresponding splicing connection holes of the left half shell and the right half shell of the sound-absorbing material.

[0029] like Figure 2 The edge of the silencing housing 10 is provided with a flange structure 103, and the flange structure is provided with a first connection hole 13, which is aligned with the second connection hole 22 on the flange 21 of the fan housing.

[0030] Combination Figure 2 , Figure 4 The fan housing 20 is provided with a guide vane structure 30, which includes an outer guide vane ring 31 and an inner guide vane ring 32, as well as a guide vane 33 disposed between the outer guide vane ring and the inner guide vane ring. The outer wall of the outer guide vane ring is fitted with the inner wall of the fan housing 20 and is fixedly connected by a connector.

[0031] The motor 40 is fitted in the inner ring 32 of the guide vane. The inner ring of the guide vane is provided with a motor fixing hole 34. The connecting piece fitted in the motor fixing hole fixes the motor in the inner ring of the guide vane.

[0032] The soundproof lining can be commonly used soundproofing cotton, or other soundproofing materials in the prior art. The soundproof lining and the sound-absorbing outer shell 10 surround the fan outer shell 20, blocking the noise generated by the fan and preventing the fan noise from affecting the people in the cabin.

[0033] During installation, after the sound insulation liner is assembled around the fan housing 20, the sound-absorbing housing 10 is then assembled around the sound insulation liner. The two ends of the connector 11 at the splicing point are engaged in the corresponding splicing connection holes 12 of the left and right half-shells 101 and 102, respectively, to securely connect the left and right half-shells 101 and 102, and to press the sound insulation liner tightly onto the fan housing 20.

[0034] The flange 21 of the fan casing is connected to the ventilation duct of the ship's cabin by a threaded connector. The threaded connector is also connected to the flange structure 103 of the sound-absorbing casing, so that the sound-absorbing casing 10 is stable on the fan casing 20.

[0035] Compared to the support rod used to support the motor 40 in the prior art, the present invention uses a guide vane structure 30 to fix the motor and the fan housing 20, which not only has the effect of guiding flow and silencing, but also has the function of fixing the motor.

[0036] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A noise reduction device for a high-speed fan on a civilian speedboat, comprising a noise reduction shell (10) and a sound insulation liner, characterized in that: The sound-absorbing housing includes a left half-shell (101) and a right half-shell (102). The left half-shell and the right half-shell are assembled around the fan housing (20). The sound-absorbing housing is cylindrical and there is a radial gap between the sound-absorbing housing and the fan housing. The sound-insulating lining is filled in the radial gap. A splicing connector (11) is provided at the joint between the left and right half of the silencing shell, so that the left and right half of the silencing shell are stably placed on the periphery of the fan shell (20).

2. The noise reduction device for high-speed fans of civilian speedboats as described in claim 1, characterized in that: The sound insulation lining includes a left half sound insulation lining and a right half sound insulation lining. The left half sound insulation lining and the right half sound insulation lining are spliced ​​on the outer periphery of the fan casing (20). The sound insulation lining is cylindrical.

3. The noise reduction device for high-speed fans of civilian speedboats as described in claim 1, characterized in that: The splicing connector (11) is a U-shaped part. The left half shell (101) and the right half shell (102) of the sound-absorbing material are provided with corresponding splicing connection holes (12). The two ends of the splicing connector are engaged in the corresponding splicing connection holes of the left half shell and the right half shell of the sound-absorbing material.

4. The noise reduction device for high-speed fans of civilian speedboats as described in claim 1, characterized in that: The edge of the silencing housing (10) is provided with a flange structure (103), and the flange structure is provided with a first connection hole (13), which is aligned with the second connection hole (22) on the flange (21) of the fan housing.

5. The noise reduction device for high-speed fans of civilian speedboats as described in claim 1, characterized in that: The fan housing (20) is provided with a guide vane structure (30), which includes an outer guide vane ring (31) and an inner guide vane ring (32), as well as a guide vane (33) disposed between the outer guide vane ring and the inner guide vane ring. The outer wall of the outer guide vane ring is fitted with the inner wall of the fan housing (20) and is fixedly connected by a connector.

6. The noise reduction device for high-speed fans of civilian speedboats as described in claim 5, characterized in that: The motor (40) is fitted in the inner ring (32) of the guide vane. The inner ring of the guide vane is provided with a motor fixing hole (34). The connecting piece fitted in the motor fixing hole fixes the motor in the inner ring of the guide vane.

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