Volute-free backward-inclined centrifugal fan

Abstract

The utility model provides a volute-free backward inclined centrifugal fan, and belongs to the technical field of centrifugal fans. The volute-free backward inclined centrifugal fan comprises a centrifugal fan body, the centrifugal fan body comprises a motor protection shell, a servo motor, a junction box, a heat dissipation copper pipe, a tail heat dissipation plate, a motor mounting plate, a base and an impeller, when the centrifugal fan needs to be used, air can quickly flow on the surface of the motor protection shell, so that the temperature of the surface of a first heat dissipation copper bar is taken away, and the heat dissipation copper bar is cooled; air is blown into the heat dissipation copper pipe, so that the air flow takes away the temperature on the surface of the heat dissipation copper pipe when penetrating through the heat dissipation copper pipe, the servo motor is helped to dissipate heat, the servo motor is completely isolated from the air duct under the condition that the position of the servo motor is not changed, the service life of the motor is protected to the maximum extent, and gas in the air duct is prevented from being corrosive or high in humidity; and meanwhile, the motor protection shell can better help the servo motor to be muted, so that the motor protection shell is more convenient and easy to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, specifically, relate to a kind of back tilt centrifugal fan without volute. BACKGROUND

[0002] Back tilt centrifugal fan, specially for the development of high static pressure, low noise, small volume multi-wing type centrifugal fan matched for purification, environmental protection industry and various special equipment, the fan wheel of this fan uses front bending single air inlet design, and the efficiency of fan can reach 70% on average;The whole machine structure is scientific, and easy to install.

[0003] At present, most of the back tilt centrifugal fan without volute adopts motor direct connection driving mode, and the motor is arranged in the air duct. If the gas in the air duct is corrosive or has high humidity, the motor will be damaged, and even burned out for a long time. The structure of the patent can effectively optimize such shortcomings. Therefore, we have made improvements and proposed a back tilt centrifugal fan without volute. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a back tilt centrifugal fan without volute.

[0005] The utility model is realized as follows:

[0006] The back tilt centrifugal fan without volute comprises a centrifugal fan body, the centrifugal fan body comprises a motor protection shell, a servo motor, a junction box, a heat dissipation copper pipe, a tail heat dissipation plate, a motor mounting plate, a base and an impeller, the motor protection shell is arranged in the inside of the centrifugal fan body, the servo motor is arranged in the inside of the motor protection shell, the tail heat dissipation plate is arranged on the outside of the motor protection shell, the junction box is arranged on the surface of the tail heat dissipation plate, the heat dissipation copper pipe is arranged on the surface of the tail heat dissipation plate, the motor mounting plate is arranged in the inside of the centrifugal fan body, the base is arranged at the bottom end of the centrifugal fan body, and the impeller is arranged in the inside of the centrifugal fan body.

[0007] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0008] Further, the motor protection shell comprises a first heat dissipation copper bar, and the outside of the motor protection shell is provided with the first heat dissipation copper bar.

[0009] The beneficial effects of the above further scheme are that when the airflow blows on the surface of the motor protection shell, the temperature on the surface of the first heat dissipation copper bar is taken away.

[0010] Further, the heat dissipation copper pipe comprises a heat dissipation fin and a clamping groove, the surface of the heat dissipation copper pipe is provided with the heat dissipation fin, and the surface of the heat dissipation fin is provided with the clamping groove.

[0011] The beneficial effect of the above further scheme is that the heat dissipation fins and the clamping grooves are connected with the first and second heat dissipation copper strips, and the heat dissipation fins help the motor dissipate heat.

[0012] Further, the tail heat dissipation plate comprises a second heat dissipation copper strip, and the outer side of the tail heat dissipation plate is provided with the second heat dissipation copper strip.

[0013] The beneficial effect of the above further scheme is that the second heat dissipation copper strip is attached to the heat dissipation fins, so that the second heat dissipation copper strip helps the heat dissipation fins dissipate heat.

[0014] Further, the motor mounting plate comprises a breathable grid, and the surface of the motor mounting plate is provided with the breathable grid.

[0015] The beneficial effect of the above further scheme is that the motor mounting plate guides the wind to blow on the surface of the motor protection shell through the breathable grid.

[0016] Further, the motor mounting plate is arranged on the outer side of the motor protection shell, the breathable grid is arranged around the connection between the motor mounting plate and the motor protection shell, and the breathable grid is arranged on the outer side of the heat dissipation copper pipe.

[0017] The beneficial effect of the above further scheme is that the wind blows in the heat dissipation copper pipe through the breathable grid.

[0018] Further, the first and second heat dissipation copper strips are connected with each other, and the first and second heat dissipation copper strips are clamped in the clamping grooves, respectively.

[0019] The beneficial effect of the above further scheme is that the first and second heat dissipation copper strips are attached to the heat dissipation fins, so that the heat dissipation fins dissipate heat.

[0020] The beneficial effect of the utility model is: the utility model discloses a kind of no volute rear inclined centrifugal fan by the above design, when needing to use, air will quickly flow on the surface of motor protection shell, to carry away the temperature on the surface of first heat dissipation copper strip, wind blows in heat dissipation copper pipe, so that the temperature on the surface of heat dissipation copper pipe is carried away when airflow passes through heat dissipation copper pipe, help servo motor dissipate heat, in the case where not changing the position of servo motor, servo motor is completely isolated with air duct, maximum limit protection motor life, avoid the gas in air duct with corrosive or higher humidity, then it will cause damage to servo motor lead to simultaneously, motor protection shell can better help servo motor to be mute, it is more convenient to use good use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Figure 1 A three-dimensional structural schematic view of the volute-free backward-curved centrifugal fan is provided in the present application.

[0023] Figure 2 A three-dimensional structural schematic view of the motor protection shell is provided in the present application.

[0024] Figure 3 A three-dimensional structural schematic view of the heat dissipation copper pipe is provided in the present application.

[0025] Figure 4 A sectional structural schematic view of the heat dissipation copper pipe is provided in the present application.

[0026] In the drawings: 100, centrifugal fan main body; 200, motor protection shell; 2001, first heat dissipation copper strip; 300, servo motor; 400, junction box; 500, heat dissipation copper pipe; 5001, heat dissipation fin; 5002, clamping groove; 600, tail heat dissipation plate; 6001, second heat dissipation copper strip; 700, motor mounting plate; 7001, air-permeable grid; 800, base; 900, impeller. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] EMBODIMENT

[0030] Please refer to Figures 1-4The utility model provides a technical scheme: a volute-free backward inclined centrifugal fan, including centrifugal fan main part 100.

[0031] Please refer to Figures 1-4 , centrifugal fan main part 100 includes motor protection shell 200, servo motor 300, terminal box 400, heat dissipation copper pipe 500, tail heat dissipation plate 600, motor mounting plate 700, base 800 and impeller 900, motor protection shell 200 sets up in the inside of centrifugal fan main part 100, servo motor 300 sets up in the inside of motor protection shell 200, tail heat dissipation plate 600 sets up at the outside of motor protection shell 200, terminal box 400 sets up at the surface of tail heat dissipation plate 600, heat dissipation copper pipe 500 sets up at the surface of tail heat dissipation plate 600, motor mounting plate 700 sets up in the inside of centrifugal fan main part 100, base 800 sets up at the bottom end of centrifugal fan main part 100, impeller 900 sets up in the inside of centrifugal fan main part 100.

[0032] As an embodiment of the utility model, further, motor protection shell 200 includes first heat dissipation copper bar 2001, and the outside of motor protection shell 200 is equipped with first heat dissipation copper bar 2001.

[0033] As an embodiment of the utility model, further, heat dissipation copper pipe 500 includes fin 5001 and clamping groove 5002, and the surface of heat dissipation copper pipe 500 is equipped with fin 5001, and the surface of fin 5001 is provided with clamping groove 5002.

[0034] As an embodiment of the utility model, further, tail heat dissipation plate 600 includes second heat dissipation copper bar 6001, and the outside of tail heat dissipation plate 600 is equipped with second heat dissipation copper bar 6001.

[0035] As an embodiment of the utility model, further, motor mounting plate 700 includes breathable grid 7001, and the surface of motor mounting plate 700 is provided with breathable grid 7001.

[0036] As an embodiment of the utility model, further, motor mounting plate 700 is equipped at the outside of motor protection shell 200, breathable grid 7001 is provided around the connection place of motor mounting plate 700 and motor protection shell 200, and breathable grid 7001 is provided at the outside of heat dissipation copper pipe 500.

[0037] As an embodiment of the utility model, further, first heat dissipation copper bar 2001 and second heat dissipation copper bar 6001 are connected with each other, and first heat dissipation copper bar 2001 and second heat dissipation copper bar 6001 are clamped in clamping groove 5002 respectively.

[0038] Specifically, the working principle of the rear inclined centrifugal fan without volute: when the staff needs to use, when the need to use, the wind power generated by the impeller 900 blows on the surface of the first heat dissipation copper strip 2001 and the inside of the heat dissipation copper pipe 500 through the air grid 7001, the air will quickly flow on the surface of the motor protection shell 200, thereby taking away the temperature on the surface of the first heat dissipation copper strip 2001, the wind blows on the inside of the heat dissipation copper pipe 500, thereby taking away the temperature on the surface of the heat dissipation copper pipe 500 when the airflow passes through the heat dissipation copper pipe 500, the heat dissipation copper pipe 500 will drive the temperature around the servo motor 300 through the heat dissipation fin 5001, thereby helping the servo motor 300 to dissipate heat, without changing the position of the servo motor 300, the servo motor 300 is completely isolated from the air duct, which maximizes the protection of the motor life, avoids the damage to the servo motor 300 caused by the corrosive or high humidity gas in the air duct, and at the same time, the motor protection shell 200 can better help the servo motor 300 to be silent, which is more convenient and easy to use.

[0039] It should be noted that the specific model and specifications of the servo motor 300 and the impeller 900 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0040] The servo motor 300 and the impeller 900 and their principles are clear to those skilled in the art, and will not be described in detail here

[0041] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be changed and varied. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A voluteless backward-curved centrifugal fan, characterized by, Including, The centrifugal fan body (100) includes a motor protection shell (200), a servo motor (300), a junction box (400), a heat dissipation copper pipe (500), a tail heat dissipation plate (600), a motor mounting plate (700), a base (800) and an impeller (900), the motor protection shell (200) is arranged in the inside of the centrifugal fan body (100), the servo motor (300) is arranged in the inside of the motor protection shell (200), tail heat dissipation plate (600) is arranged on the outside of the motor protection shell (200), the junction box (400) is arranged on the surface of the tail heat dissipation plate (600), the heat dissipation copper pipe (500) is arranged on the surface of the tail heat dissipation plate (600), the motor mounting plate (700) is arranged in the inside of the centrifugal fan body (100), the base (800) is arranged on the bottom end of the centrifugal fan body (100), and the impeller (900) is arranged in the inside of the centrifugal fan body (100).

2. A voluteless backward-curved centrifugal fan according to claim 1, characterized in that The motor protection shell (200) includes a first heat dissipation copper bar (2001), and the first heat dissipation copper bar (2001) is arranged on the outside of the motor protection shell (200).

3. A voluteless backward-curved centrifugal fan according to claim 1, characterized in that The heat dissipation copper pipe (500) includes a heat dissipation fin (5001) and a clamping groove (5002), the heat dissipation fin (5001) is arranged on the surface of the heat dissipation copper pipe (500), and the clamping groove (5002) is arranged on the surface of the heat dissipation fin (5001).

4. A voluteless backward-curved centrifugal fan as claimed in claim 2, characterized in that The tail heat dissipation plate (600) includes a second heat dissipation copper bar (6001), and the second heat dissipation copper bar (6001) is arranged on the outside of the tail heat dissipation plate (600).

5. A voluteless backward-curved centrifugal fan as claimed in claim 1, characterized in that The motor mounting plate (700) includes a breathable grid (7001), and the breathable grid (7001) is arranged on the surface of the motor mounting plate (700).

6. A voluteless backward-curved centrifugal fan according to claim 5, characterized in that The motor mounting plate (700) is arranged on the outside of the motor protection shell (200), the breathable grid (7001) is arranged around the connection between the motor mounting plate (700) and the motor protection shell (200), and the breathable grid (7001) is arranged on the outside of the heat dissipation copper pipe (500).

7. A backward-curved centrifugal fan according to claim 4, characterized in that The first heat dissipation copper bar (2001) and the second heat dissipation copper bar (6001) are connected to each other, and the first heat dissipation copper bar (2001) and the second heat dissipation copper bar (6001) are clamped in the clamping groove (5002) respectively.

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