CN207673580U - A kind of mixed flow fan of novel energy-conserving - Google Patents

Abstract

The utility model discloses a kind of mixed flow fans of novel energy-conserving, are related to ventilation equipment technical field.The ventilation equipment, including ventilation blower main body, axis flow, impeller, centrifugal film, motor, outer flaring and outer barrel, it is installed with protective fence on the left of the inner wall of ventilation blower main body, the left end of impeller is fixed with fixed semicircle set, and axis flow is located at the left side upper and lower side of impeller, the first diversion trench is embedded on the blade of impeller, centrifugal film is located at the right side upper and lower side of impeller, the right side centre position of impeller is fixed with fixed ring, and connecting shaft is connected between impeller and motor, the surface layer of motor is provided with cooling fin, and the inner wall of outer flaring is embedded with the second diversion trench.When air-flow passes through impeller, the first diversion trench on impeller can make air-flow quickly through reducing gas-flow resistance, to reduce the kinetic energy of motor, realize energy-conserving action, be suitable for the production and use of mixed flow fan, have good development prospect.

Description

A new energy-saving mixed flow fan

technical field

The utility model relates to the technical field of ventilation equipment, in particular to a novel energy-saving mixed flow fan.

Background technique

Fans are generally classified according to the airflow direction of the impeller. The airflow direction of the axial flow fan is basically parallel to the axis of the fan. The airflow of the pipeline centrifugal fan enters from the axial direction of the impeller and is discharged from the radial direction of the impeller after changing the direction. Mixed flow fan It is a product between the axial flow fan and the centrifugal fan. It combines the best characteristics of the axial flow fan and the centrifugal fan. It has high conveying efficiency and a wide pressure range. The air of the mixed flow fan enters the impeller axially and passes through the The impeller blades are deflected at an inclination angle, so that the gas flowing out of the impeller has both axial and radial components. The mixed-flow fan is a fan between the axial-flow fan and the centrifugal fan. The wind pressure coefficient of the mixed-flow fan is ratio Axial flow fans are large, have a larger flow coefficient than centrifugal fans, and have the advantages of simple and convenient installation, so they are widely used in the ventilation and exhaust of large buildings, underground places, and industrial and mining enterprises.

However, the existing high-efficiency mixed-flow fan, application number: CN201520615083.5, has poor energy-saving performance, and when the airflow passes through the impeller, it is subjected to greater resistance, requiring the motor to convert more electric energy into kinetic energy, which increases energy consumption and has poor shockproof effect. When rotating, it is easy to make the outer cylinder vibrate at the same time, causing the outer cylinder to be easily damaged, reducing the service life of the equipment, and the ventilation efficiency is poor. When the air enters the air inlet, it is easy to be resisted, which reduces the air inflow and reduces the ventilation efficiency.

Utility model content

The purpose of this utility model is to provide a new type of energy-saving mixed flow fan to solve the problems of poor energy saving, poor shockproof effect and poor ventilation efficiency in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions: a new type of energy-saving mixed flow fan, including the main body of the fan, the axial flow blade, the impeller, the centrifugal blade, the motor, the outer flare and the outer cylinder, the main body of the fan A guard rail is fixedly installed on the left side of the inner wall of the impeller, and a fixed half-circle sleeve is fixed on the left end of the impeller, and the axial flow vanes are located at the upper and lower ends of the left side of the impeller, and a first guide groove is embedded in the blade of the impeller. The centrifugal blade is located at the upper and lower ends of the right side of the impeller, a fixed ring is fixed at the middle position of the right side of the impeller, and a connecting shaft is movably connected between the impeller and the motor, the surface of the motor is provided with cooling fins, and the outer flare The inner wall of the inner wall is embedded with a second guide groove, the right end of the main body of the fan is an air inlet, the lower side of the motor is fixed with a fixed bracket, the bottom of the outer cylinder is fixed with a support frame, and the support frame A push plate is fixedly installed on the lower side, a shock absorbing spring is fixed on the bottom of the push plate, a base is fixedly installed on the underside of the shock absorbing spring, a sound-absorbing coating is embedded in the inner wall of the left end of the outer cylinder, and the outer cylinder The leftmost end of is the air outlet.

Further, the fixed semi-circular sleeve, the fixed ring and the connecting shaft are all threaded.

Further, the first guide groove on the impeller blade is an arc-shaped groove, and the shape of the cooling fin on the motor is spiral.

Further, the outer flaring is a bell mouth, and the second guide groove is a tapered groove.

Further, there are two bases in total, and the support frame is elastically connected to the base.

Compared with the prior art, the utility model has the beneficial effects that: the main body of the ventilator is provided with a fixed semicircular sleeve, and the fixed semicircular sleeve and the fixed ring are screwed to the connecting shaft. When ventilation is required, the motor drives the connecting shaft to rotate. The direction in which the connecting shaft drives the fixed semi-circular sleeve and the fixed ring to rotate is the thread tightening direction, which is conducive to the rotation of the impeller and has strong practicability. The first guide groove on the impeller blade is an arc groove, and the shape of the heat sink on the motor is a spiral Shaped, the outer flaring is a bell mouth, and the second diversion groove is a conical groove. After the impeller rotates, the outer flaring can make more air flow into the air inlet more quickly, and the right side of the second diversion groove is deep The groove, the shallow groove on the left, makes it easier to introduce air and increase the efficiency of air inflow. After the airflow enters the air inlet, the spiral fins make it easier for the airflow to pass through the motor. When the airflow passes through the impeller, the first on the impeller The diversion groove can make the airflow pass quickly, reduce the airflow resistance, thereby reducing the kinetic energy of the motor, and realize the energy saving effect. When the airflow flows out from the air outlet, it first passes through the sound-absorbing coating, which can reduce the noise of the airflow from the air outlet , Strong practicability, there are two bases, and the support frame is elastically connected to the base. When the motor is working, the outer cylinder will generate an unbalanced force up and down, and the shock-absorbing spring on the base can reduce the vibration of the outer cylinder. , improve equipment life.

Description of drawings

Fig. 1 is a schematic diagram of the overall internal structure of the utility model;

Fig. 2 is the overall structural representation of the utility model;

Fig. 3 is a structural schematic diagram of the impeller of the present invention.

In the figure: 1. The main body of the ventilator; 2. The protective fence; 3. The fixed semi-circular sleeve; 4. The axial flow sheet; 5. The impeller; 501. The first diversion groove; 6. The centrifugal sheet; Connecting shaft; 9. Motor; 10. Heat sink; 11. Outer flare; 12. Second diversion groove; 13. Air inlet; 14. Fixed bracket; 15. Base; 16. Damping spring; 17. Push plate ; 18, support frame; 19, sound-absorbing coating; 20, outer cylinder; 21, air outlet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. For example, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

Please refer to Figures 1 to 3. The utility model provides a technical solution: a new type of energy-saving mixed flow fan, including a main body of the fan 1, a guardrail 2, a fixed semicircle sleeve 3, an axial flow sheet 4, an impeller 5, a first Diversion groove 501, centrifugal plate 6, fixed ring 7, connecting shaft 8, motor 9, heat sink 10, outer flare 11, second diversion groove 12, air inlet 13, fixed bracket 14, base 15, shock absorbing spring 16. Push plate 17, support frame 18, sound-absorbing coating 19, outer cylinder 20 and air outlet 21, guardrail 2 is fixedly installed on the left side of the inner wall of ventilator main body 1, and fixed semi-circular sleeve 3 is fixed on the left end of impeller 5, and The axial flow sheet 4 is located at the upper and lower ends of the left side of the impeller 5, the blade of the impeller 5 is embedded with a first guide groove 501, the centrifugal sheet 6 is located at the upper and lower ends of the right side of the impeller 5, and the middle position of the right side of the impeller 5 is fixed with a fixed ring 7, and a connecting shaft 8 is movably connected between the impeller 5 and the motor 9. When ventilation is required, the motor 9 is first driven to start working, the motor 9 drives the connecting shaft 8 to rotate, and the connecting shaft 8 drives the impeller 5 to start rotating, and the connecting shaft 8. The direction in which the fixed semi-circular sleeve 3 and the fixed ring 7 are driven to rotate is the thread tightening direction. The guardrail 2 can prevent foreign objects from entering the outer cylinder 20 and damaging the impeller 5 to improve the service life of the equipment. The inner wall of the flaring 11 is embedded with a second diversion groove 12, and the right end of the main body of the fan 1 is an air inlet 13. After the impeller 5 rotates, the airflow flows in from the air inlet 13, and the outer flaring 11 can make more and faster air The air flow into the air inlet 13, and the right side of the second guide groove 12 is a deep groove, and the left side is a shallow groove, which makes it easier for air to be introduced and increases the efficiency of air inflow. After the airflow enters the air inlet 13, the spiral heat sink 10 makes it easier for the airflow to pass through the motor 9. After passing through the motor 9, the airflow begins to pass through the impeller 5. First, a part of the airflow passes through the centrifugal sheet 6 to diffuse the airflow, and the other part of the airflow passes through the axial flow sheet 4 to make the airflow flow in the axial direction. Two kinds of airflow Discharge at the same time, complete the mixed flow ventilation, when the air flow passes through the impeller 5, the first guide groove 501 on the impeller 5 can make the air flow pass quickly, reduce the air flow resistance, thereby reducing the kinetic energy of the motor 9, and realize the energy saving effect. When the airflow flows out from the air outlet 21, it first passes through the sound-absorbing coating 19, which can reduce the noise of the airflow flowing out from the air outlet 21, and is more practical. The lower side of the motor 9 is fixed with a fixed bracket 14, and the bottom of the outer cylinder 20 is fixedly installed There is a support frame 18, and the lower side of the support frame 18 is fixedly equipped with a push plate 17, the bottom of the push plate 17 is fixed with a shock absorbing spring 16, and the lower side of the shock absorbing spring 16 is fixedly equipped with a base 15, and the left end inner wall of the outer cylinder 20 A sound-absorbing coating 19 is embedded inside, and the leftmost end of the outer cylinder 20 is an air outlet 21. When the motor 9 is working, the outer cylinder 20 will generate an up and down unbalanced force, so that the outer cylinder 20 compresses the support frame 18, and the support frame 18 compresses The push plate 17 moves the push plate 17 downwards, and then the push plate 17 compresses the damping spring 16 downwards to reduce the vibration of the outer cylinder 20 and improve the service life of the equipment.

Working principle: firstly, when ventilation is required, the motor 9 is first driven to start working, the motor 9 drives the connecting shaft 8 to rotate, the connecting shaft 8 drives the impeller 5 to start rotating, and the connecting shaft 8 drives the fixed semi-circular sleeve 3 and the fixed ring 7 to rotate in the direction of In the screw tightening direction, the protective fence 2 can prevent foreign objects from entering the outer cylinder 20. After the impeller 5 rotates, the airflow flows in from the air inlet 13, and the outer flare 11 can make more air flow into the air inlet 13 faster, and the second The guide groove 12 makes it easier to introduce air and increase the efficiency of air inflow. After the airflow enters the air inlet 13, the spiral heat sink 10 makes it easier for the airflow to pass through the motor 9. After passing through the motor 9, the airflow begins to pass through the impeller 5, first Part of the air flow passes through the centrifugal blade 6 to diffuse the air flow, and the other part of the air flow passes through the axial flow blade 4 to make the air flow flow in the axial direction, and the two air flows are discharged at the same time to complete the mixed flow ventilation. The flow groove 501 enables the airflow to pass through quickly. When the airflow flows out from the air outlet 21, it first passes through the sound-absorbing coating 19. When the motor 9 is working, the outer cylinder 20 will generate an up-down unbalanced force, causing the outer cylinder 20 to compress the support frame 18. , the support frame 18 compresses the push plate 17 to move the push plate 17 downward, and then the push plate 17 compresses the damping spring 16 downward to reduce the vibration of the outer cylinder 20 and improve the service life of the equipment. This is the specific working principle of this new energy-saving mixed flow fan.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A new type of energy-saving mixed-flow fan, including fan main body (1), axial flow vane (4), impeller (5), centrifugal vane (6), motor (9), outer flare (11) and outer The cylinder (20) is characterized in that: the left side of the inner wall of the fan main body (1) is fixed with a guardrail (2), the left end of the impeller (5) is fixed with a fixed semi-circular sleeve (3), and the axial flow The blade (4) is located at the upper and lower ends of the left side of the impeller (5), and the blade of the impeller (5) is embedded with a first guide groove (501), and the centrifugal blade (6) is located on the right side of the impeller (5). The upper and lower ends of the side, the middle position on the right side of the impeller (5) is fixed with a fixed ring (7), and a connecting shaft (8) is movably connected between the impeller (5) and the motor (9), and the motor (9) The surface layer of the fan is provided with cooling fins (10), the inner wall of the outer flare (11) is embedded with a second diversion groove (12), and the right end of the fan main body (1) is an air inlet (13), so The lower side of the motor (9) is fixed with a fixed bracket (14), the bottom of the outer cylinder (20) is fixed with a support frame (18), and the lower side of the support frame (18) is fixed with a push plate (17 ), the bottom of the push plate (17) is fixed with a damping spring (16), the lower side of the damping spring (16) is fixed with a base (15), and the inner wall of the left end of the outer cylinder (20) A sound-absorbing coating (19) is embedded, and the leftmost end of the outer cylinder (20) is an air outlet (21). 2. A new type of energy-saving mixed flow fan according to claim 1, characterized in that: the fixed semi-circular sleeve (3), the fixed ring (7) and the connecting shaft (8) are all threaded. 3. A new type of energy-saving mixed-flow fan according to claim 1, characterized in that: the first guide groove (501) on the blade of the impeller (5) is an arc-shaped groove, and the motor (9) The shape of the heat sink (10) is spiral. 4. A new type of energy-saving mixed-flow fan according to claim 1, characterized in that: the outer flare (11) is a bell mouth, and the second diversion groove (12) is a tapered groove. 5. A new type of energy-saving mixed flow fan according to claim 1, characterized in that there are two bases (15) in total, and the support frame (18) is elastically connected to the base (15).