A high-hermeticity casing for a small blower

Abstract

The utility model discloses a high air tightness machine shell of small -size air blower, including machine shell main part, sealing mechanism, noise reduction mechanism and heat abstract mechanism, wherein sealing mechanism adopts the cooperation of first splicing edge and second splicing edge set between volute casing and end cap casing, then adopts the cooperation of first bolt lug and second bolt lug, makes the pressure seal between volute casing and end cap casing, has effectively reduced the air leakage rate, the noise reduction mechanism adopts the arc cavity that first arc inner wall and second arc inner wall merge form, can strengthen the anti -wind pressure deformation ability again, can optimize airflow path to reduce turbulent flow noise, has promoted the overall noise reduction effect of air blower, the heat abstract mechanism adopts the multiple vent hole of setting in the side surface of machine shell main part, and the outer surface structure cooperation of machine shell main part forms "cavity heat dissipation + initiative ventilation" double path heat dissipation system to accelerate motor heat conduction, realizes the effect of high -efficient heat dissipation.

Description

Technical Field

[0001] This utility model relates to the technical field of blower parts structure, and in particular to a high airtight housing for a small blower. Background Technology

[0002] As a core component of industrial equipment's heat dissipation, ventilation, and pneumatic conveying systems, the performance stability and energy efficiency of small blowers directly affect the operating efficiency of the main equipment. Currently, small blowers generally adopt a split-casing design, consisting of a volute and end cap assembled with bolts. This traditional structure still suffers from problems such as efficiency reduction, high structural resonance noise, and uneven heat dissipation caused by air leakage at the casing joints (leakage rate ≥8%). Therefore, there is an urgent need for a small blower casing that features high airtightness (leakage rate ≤2%), low noise, strong heat dissipation, and convenient installation. Utility Model Content

[0003] The purpose of this utility model is to provide a high airtight housing for a small blower, which solves the problems of serious air leakage at the joints of traditional small blower housings, loud resonance noise, and uneven heat dissipation.

[0004] The present invention provides the following technical solution: a high airtight housing for a small blower, comprising a housing body, a sealing mechanism, a noise reduction mechanism, and a heat dissipation mechanism disposed on the housing body. The housing body comprises a volute housing and an end cap housing. The sealing mechanism comprises a first splicing edge, a second splicing edge, a first bolt lug, and a second bolt lug disposed between the volute housing and the end cap housing. When the first splicing edge and the second splicing edge cooperate and press against each other, the first bolt lug fits against the second bolt lug. The noise reduction mechanism comprises a first arc-shaped inner wall and a second arc-shaped inner wall. When the end cap housing is joined to the volute housing, a streamlined arc-shaped cavity is formed between the first arc-shaped inner wall and the second arc-shaped inner wall. The heat dissipation mechanism comprises a plurality of ventilation holes disposed on the side of the housing body.

[0005] As described above, a high airtight housing for a small blower has a first splicing edge surrounding the volute housing and a second splicing edge surrounding the end cap housing, with the mating surfaces of the first splicing edge and the second splicing edge inclined at 15°.

[0006] As described above, a high airtight housing for a small blower has a first bolt lug distributed on the periphery of the volute housing, and a second bolt lug distributed on the periphery of the end cover housing. The first bolt lug and the second bolt lug are used for bolts to pass through and lock the volute housing and the end cover housing.

[0007] The high airtight housing of a small blower as described above has a corresponding positioning groove and positioning buckle between the first bolt lug and the second bolt lug.

[0008] The high airtight housing of a small blower as described above, the housing body further includes an air outlet, and the sealing mechanism further includes an elastic clamp groove surrounding the air outlet.

[0009] The high airtight housing of a small blower as described above has a surrounding streamlined cavity wall, a side cavity wall and an arc-shaped streamlined cavity wall inside the housing body. The arc-shaped streamlined cavity wall is located at the transition connection between the surrounding streamlined cavity wall and the side cavity wall to form the arc-shaped cavity channel.

[0010] The high airtight housing of a small blower as described above has a fan clearance opening on one side of the housing body relative to the side cavity wall.

[0011] The high airtight housing of a small blower as described above has ventilation holes distributed in a honeycomb pattern around the side cavity wall.

[0012] The high airtight housing of a small blower as described above, wherein both the volute housing and the end cap housing are made of aluminum alloy.

[0013] The high airtight housing of a small blower as described above, wherein the volute housing and the end cap housing are both integrally formed by die casting.

[0014] Compared with the prior art, the present invention has the following advantages: This utility model discloses a high-airtightness housing for a small blower. The housing body incorporates a sealing mechanism, a noise reduction mechanism, and a heat dissipation mechanism. The sealing mechanism utilizes the cooperation of a first and second splicing edge located between the volute housing and the end cover housing, along with the cooperation of a first and second bolt lug, to create a pressure seal between the volute housing and the end cover housing, effectively reducing air leakage. The noise reduction mechanism employs an arc-shaped cavity formed by the merging of a first and second arc-shaped inner wall, which enhances resistance to wind pressure deformation and optimizes the airflow path to reduce turbulent noise, improving the overall noise reduction effect of the blower. The heat dissipation mechanism uses multiple ventilation holes on the side of the housing body, which, in conjunction with the outer surface structure of the housing body, form a dual-path heat dissipation system of "cavity heat dissipation + active ventilation," thereby accelerating heat conduction from the motor and achieving efficient heat dissipation. Attached Figure Description

[0015] Figure 1 This is an exploded view of the volute housing and end cap housing of the high airtight housing of this utility model.

[0016] Figure 2This is an exploded view of the volute housing and end cap housing of the high airtight housing of this utility model from another angle.

[0017] Explanation of reference numerals in the attached drawings: 1. Main body of the casing; 2. Sealing mechanism; 3. Noise reduction mechanism; 4. Heat dissipation mechanism; 11. Volute casing; 12. End cover casing; 13. Air outlet; 21. First splicing edge; 22. Second splicing edge; 23. First bolt lug; 24. Second bolt lug; 25. Elastic clamp groove; 26. Circumferential streamlined cavity wall; 27. Side cavity wall; 28. Arc-shaped streamlined cavity wall; 29. ​​Fan clearance opening; 31. First arc-shaped inner wall; 32. Second arc-shaped inner wall; 33. Arc-shaped cavity; 41. Ventilation hole; 231. Positioning slot; 241. Positioning buckle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Please refer to the appendix Figure 1 To be continued Figure 2This embodiment provides a high airtight housing for a small blower, including a housing body 1, a sealing mechanism 2, a noise reduction mechanism 3, and a heat dissipation mechanism 4 disposed on the housing body 1. The housing body 1 includes a volute housing 11 and an end cap housing 12. The sealing mechanism 2 includes a first splicing edge 21, a second splicing edge 22, a first bolt lug 23, and a second bolt lug 24 disposed between the volute housing 11 and the end cap housing 12. When the first splicing edge 21 and the second splicing edge 22 cooperate and press against each other, the first bolt lug 23 fits against the second bolt lug 24. The noise reduction mechanism 3 includes a first arc-shaped inner wall 31 and a second arc-shaped inner wall 32. When the end cap housing 12 is joined to the volute housing 11, a streamlined arc-shaped cavity 33 is formed between the first arc-shaped inner wall 31 and the second arc-shaped inner wall 32. The heat dissipation mechanism 4 includes a plurality of ventilation holes 41 disposed on the side of the housing body 1. This embodiment features a high-airtightness housing for a small blower. The housing body 1 incorporates a sealing mechanism 2, a noise reduction mechanism 3, and a heat dissipation mechanism 4. The sealing mechanism 2 utilizes the engagement of a first splicing edge 21 and a second splicing edge 22 between the volute housing 11 and the end cover housing 12, along with the engagement of a first bolt lug 23 and a second bolt lug 24, creating a pressure seal between the volute housing 11 and the end cover housing 12, effectively reducing air leakage. The noise reduction mechanism 3 employs an arc-shaped cavity 33 formed by the merging of a first arc-shaped inner wall 31 and a second arc-shaped inner wall 332. This enhances resistance to wind pressure deformation and optimizes the airflow path to reduce turbulent noise, improving the overall noise reduction effect of the blower. The heat dissipation mechanism 4 utilizes multiple ventilation holes 41 on the side of the housing body 1, which, in conjunction with the outer surface structure of the housing body 1, form a dual-path heat dissipation system of "cavity heat dissipation + active ventilation," thereby accelerating heat conduction from the motor and achieving efficient heat dissipation.

[0020] The first splicing edge 21 is disposed around the volute housing 11, and the second splicing edge 22 is disposed around the end cover housing 12. The mating surfaces of the first splicing edge 21 and the second splicing edge 22 are inclined at 15°. Multiple first bolt lugs 23 are distributed around the volute housing 11, and multiple second bolt lugs 24 are distributed around the end cover housing 12. The first bolt lugs 23 and the second bolt lugs 24 are used for bolts to pass through and lock the volute housing 11 and the end cover housing 12. A pressure sealing structure is adopted, with the splicing edge of the housing body and the end cover using a 15° inclined surface. Combined with a bolt preload of 8-10 N·m, a pressure seal is formed, strictly controlling the air leakage rate to within 2%.

[0021] The first bolt lug 23 and the second bolt lug 24 are provided with corresponding positioning slots 231 and positioning buckles 241, which makes it easier to splice the volute housing and the end cover housing.

[0022] The main body 1 of the casing also includes an air outlet 13, and the sealing mechanism 2 also includes an elastic clamp groove 25 that is recessed around the air outlet 13. The air outlet 13 is provided with an annular elastic clamp groove 25 at the connection end with the pipe, which can be adapted to various pipe diameters and has a sealing life of ≥5000 disassembly and assembly cycles.

[0023] The main body 1 of the casing has a surrounding streamlined cavity wall 26, a side cavity wall 27, and an arc-shaped streamlined cavity wall 28. The arc-shaped streamlined cavity wall 28 is located at the transition connection between the surrounding streamlined cavity wall 26 and the side cavity wall 27 to form an arc-shaped cavity 33. This streamlined arc-shaped cavity structure enhances wind pressure deformation resistance (withstanding wind pressure ≥15kPa without deformation) and optimizes the airflow path to reduce turbulent noise, controlling the resonant frequency below 500Hz and improving the overall noise reduction effect. Preferably, a fan clearance opening 29 is provided on the side of the main body 1 of the housing that is opposite to the side cavity wall 27.

[0024] Preferably, the ventilation holes 41 are distributed in a honeycomb pattern around the side cavity wall 27, and the main body 1 of the casing and the outer surface structure cooperate to form a dual-path heat dissipation system of "cavity heat dissipation + active ventilation".

[0025] Preferably, both the volute housing 11 and the end cover housing 12 are made of aluminum alloy. The housing is made of die-cast aluminum alloy with a thermal conductivity ≥110W / (m・K) to accelerate heat conduction in the motor.

[0026] Both the volute housing 11 and the end cap housing 12 are integrally die-cast. While achieving upgrades in airtightness and strength, the manufacturing cost is reduced by 8% compared to a separate welded structure, and the installation efficiency is increased by 40%.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high airtight housing for a small blower, characterized in that: The device includes a housing body (1), a sealing mechanism (2), a noise reduction mechanism (3), and a heat dissipation mechanism (4) disposed on the housing body (1). The housing body (1) includes a volute housing (11) and an end cap housing (12). The sealing mechanism (2) includes a first splicing edge (21), a second splicing edge (22), a first bolt lug (23), and a second bolt lug (24) disposed between the volute housing (11) and the end cap housing (12). The first splicing edge (21) and the second splicing edge (24) are connected. When the edges (22) press against each other, the first bolt lug (23) fits against the second bolt lug (24). The noise reduction mechanism (3) includes a first arc-shaped inner wall (31) and a second arc-shaped inner wall (32). When the end cap housing (12) is joined to the volute housing (11), a streamlined arc-shaped cavity (33) is formed between the first arc-shaped inner wall (31) and the second arc-shaped inner wall (32). The heat dissipation mechanism (4) includes a plurality of ventilation holes (41) provided on the side of the main body (1).

2. The high airtight housing of a small blower according to claim 1, characterized in that: The first splicing edge (21) is disposed around the volute housing (11), and the second splicing edge (22) is disposed around the end cap housing (12). The mating surfaces of the first splicing edge (21) and the second splicing edge (22) are inclined at 15°.

3. The high airtight housing of a small blower according to claim 1, characterized in that: The first bolt lug (23) is a plurality of the arrangement distributed around the volute housing (11), and the second bolt lug (24) is a plurality of the arrangement distributed around the end cap housing (12). The first bolt lug (23) and the second bolt lug (24) are used for bolts to pass through to lock the volute housing (11) and the end cap housing (12).

4. The high airtight housing of a small blower according to claim 3, characterized in that: The first bolt lug (23) and the second bolt lug (24) are provided with corresponding positioning slots (231) and positioning buckles (241).

5. The high airtight housing of a small blower according to claim 1, characterized in that: The main body of the casing (1) also includes an air outlet (13), and the sealing mechanism (2) also includes an elastic clamp groove (25) that is recessed around the air outlet (13).

6. The high airtight housing of a small blower according to claim 1, characterized in that: The main body (1) of the casing is provided with a surrounding streamlined cavity wall (26), a side cavity wall (27) and an arc-shaped streamlined cavity wall (28). The arc-shaped streamlined cavity wall (28) is located at the transition connection between the surrounding streamlined cavity wall (26) and the side cavity wall (27) to form the arc-shaped cavity (33).

7. The high airtight housing of a small blower according to claim 6, characterized in that: A fan clearance opening (29) is provided on the side of the main body (1) relative to the side cavity wall (27).

8. The high airtight housing of a small blower according to claim 6, characterized in that: The ventilation holes (41) are distributed in a honeycomb pattern around the side cavity wall (27).

9. The high airtight housing of a small blower according to claim 1, characterized in that: Both the volute housing (11) and the end cap housing (12) are made of aluminum alloy.

10. The high airtight housing of a small blower according to claim 1, characterized in that: Both the volute housing (11) and the end cap housing (12) are integrally formed by die casting.

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