CN107975852A - There is the range hood of turbocharging - Google Patents

Abstract

The application relates to a range hood with a turbocharging function, which includes a casing, and a turbine assembly is arranged inside the casing, and the turbine assembly includes a volute, a mutually assembled turbine and a turbine middle plate, and the volute A wind guide ring is arranged on the top, and a shaft hole is arranged in the middle of the middle plate of the turbine, the motor shaft of the rotating electric machine passes through the shaft hole, and a booster blade is arranged between the end of the motor shaft and the middle plate of the turbine, and the booster The ratio of the rotating diameter of the pressure vanes to the diameter of the turbine is 0.3-0.7. In this application, by setting the rotation diameter of the supercharging vane to be smaller than the diameter of the turbine, the eye space formed when the turbine rotates is sufficient, and the suction effect of the turbine is obviously increased, thereby increasing the efficiency of the fan and reducing the noise. Simultaneously, because the length of the supercharging vane is small, only a little oil stain is left on the vane, which does not increase the weight of the vane and enhances the suction effect.

Description

Range hood with turbo function

technical field

The invention relates to a range hood with a turbocharging function, which belongs to the technical field of household appliances.

Background technique

The range hood is a kitchen appliance that purifies the kitchen environment. With the improvement of people's quality of life, the range hood has become an indispensable kitchen equipment for modern families. It is usually installed above the kitchen stove, which can quickly take away the waste burned by the stove and the oil fume generated during the cooking process and discharge it outside, reduce indoor pollution, purify the air, and have the safety guarantee function of anti-virus and explosion-proof. In the existing range hood, there is usually a problem that the oil fume generated during the cooking process cannot be completely sucked away, resulting in the smell of oil fume in the house. One reason for this phenomenon is that the suction effect of the range hood is not good. The most common way to solve this problem is to increase the motor power of the range hood and the speed of rotation of the turbine, thereby increasing the suction effect. But the problem that follows is that the noise increases due to the increase of the turbine speed, which affects the user experience of the range hood.

Chinese patent application 201620404343.9 discloses a range hood with multiple oil fume separation and pressurization functions, including a range hood casing and a volute inside, and a turbofan driven by a motor to rotate inside the volute. The tuyere is connected to the smoking port on the shell of the range hood, the air outlet of the volute is connected to the smoke exhaust seat, and the air inlet of the volute is covered with a booster wind wheel, which is fixedly installed on the main shaft of the motor , the motor simultaneously drives the turbofan and the booster wind wheel to rotate. The supercharging wind wheel in this patent completely covers the air inlet of the turbine, so that the turbulence in the airflow increases, resulting in an increase of noise. At the same time, due to its large radius, it has poor stability during high-speed rotation and is very inconvenient to install. In addition, since the serrated protrusions are evenly distributed on the outside, it is easy to form oily scales, which in turn leads to an increase in the weight of the booster fan wheel, which enhances the suction effect.

Contents of the invention

The present invention proposes a range hood with a turbocharging function in order to overcome the above-mentioned defects in the prior art.

According to the range hood with turbocharging function of the present invention, it includes a casing, and a turbine assembly is arranged inside the casing, and the turbine assembly includes a volute, a mutually assembled turbine and a turbine middle plate, on the volute A wind guide ring is provided, a shaft hole is arranged in the middle of the turbine middle plate, the motor shaft of the rotating electrical machine passes through the shaft hole, and a booster vane is arranged between the end of the motor shaft and the turbine middle plate, the booster The ratio of the rotating diameter of the blade to the diameter of the turbine is 0.3-0.7. More preferably, the booster blade is fixed on the end of the motor shaft by tightening a nut.

Preferably, the middle part of the turbine middle plate has a protruding bulging surface, and the rotation diameter of the booster blade is smaller than or equal to the diameter of the bulging surface of the turbine middle plate. Alternatively, the ratio of the rotating diameter of the booster blade to the diameter of the turbine is 0.4-0.5.

Preferably, the booster vane is located between the wind guide ring and the bulging surface of the turbine middle plate, and is located within the middle third of the turbine depth.

Preferably, a fan frame is provided inside the casing, and the volute is fixed on the fan frame. The range hood also includes a deflector, the deflector is arranged at the lower part of the fan frame, and a mesh cover is provided outside the deflector.

Preferably, the back of the fan frame is provided with a hanging plate, and the front of the fan frame is provided with a maintenance panel; the upper part of the fan frame is provided with an air outlet, and the air outlet is connected to the smoke exhaust channel; the fan frame The top houses the electrical components.

In this application, by setting the rotation diameter of the booster vane to be smaller than the diameter of the turbine, the eye space formed when the turbine rotates is sufficient, and the suction effect of the turbine is significantly increased, thereby increasing the efficiency of the fan and reducing noise. Simultaneously, because the length of the supercharging vane is small, only a little oil stain is left on the vane, which does not increase the weight of the vane and enhances the suction effect.

Description of drawings

Fig. 1 shows a schematic perspective view of a range hood according to the present application.

Figure 2 shows a rear perspective view of the fan frame and its associated components.

Figure 3 shows a front perspective view of the fan frame and its associated components.

Figure 4 shows a front perspective view of the turbine assembly.

Figure 5 shows a rear perspective view of the turbine assembly.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other. The directional terms in this application, such as "front, back, left, right", "up, down, outside, inside", etc., are for the convenience of description and do not constitute a limitation on the scope of protection. Those skilled in the art know that simple substitutions between the above directions do not depart from the protection scope of the present application.

As shown in FIG. 1 , it shows a perspective view of a range hood according to the present application. As shown in Figures 2 and 3, a rear perspective view and a front perspective view of the fan frame and its associated components are shown, respectively. As shown in the figure, the range hood includes a casing 1 , and a fan frame 22 and a turbine assembly are arranged inside the casing 1 . According to needs, the range hood can also be provided with a control panel 2, a deflector 3, an oil collection box 4, and the like. The deflector 3 is arranged on the bottom of the fan frame 22, and a net cover 5 can also be provided outside it; the back side of the fan frame 22 can also be provided with a hanging plate 23 for hanging the range hood; A maintenance panel 25 can be provided, so that the maintenance panel 25 can be removed during maintenance to form a passage leading to the inside of the hood; the upper part of the fan frame 22 is provided with an air outlet 24, and the air outlet is connected with the smoke exhaust channel to discharge the oil fume. outside of the machine. Preferably, an electrical component 26 may also be provided on the top of the fan frame 22 for controlling the action of the range hood.

As shown in Figures 4-5, there are shown schematic diagrams of the turbine assembly of the present application. The turbine assembly includes a turbine 30 and a turbine midplate 35 assembled with each other. Preferably, the turbine 30 and the turbine middle plate 35 are riveted to each other, and the position of the mutual riveting between the turbine 30 and the turbine middle plate 35 enables the turbine middle plate 35 to be completely retracted within the depth range of the turbine 30 . The volute 31 may also be provided with an air guiding ring 32 , and the volute 31 is fixed on the fan frame 22 . By setting the wind guide ring, in addition to being able to guide the wind, it can also have effects such as sound attenuation and prevention of eddy current generation. The center of the turbine middle plate 35 is provided with a shaft hole 36, the motor shaft of the rotary motor passes through the shaft hole, the rotary motor is fixed on the volute, and the turbine and the turbine middle plate are fixed on the rotary motor by the motor shaft. As shown in FIG. 4 , a supercharging vane 33 is arranged between the end of the motor shaft and the middle plate of the turbine, and the supercharging vane 33 can be fixed on the end of the motor shaft by tightening a nut 34 . Preferably, the booster vanes 33 are located within the middle third of the turbine depth. That is, if the turbine depth is divided into thirds, the booster vane 33 is set within the middle third.

As shown in FIGS. 4 and 5 , the middle portion of the turbine middle plate 35 has a protruding bulging surface. Preferably, the ratio of the rotating diameter of the booster blade 33 to the diameter of the turbine 30 is 0.3-0.7, preferably 0.4-0.5. The turbine diameter here refers to the outer diameter of the turbine, and the ratio of the inner diameter to the outer diameter of the turbine may be 0.5-0.95. Optionally, the rotational diameter of the booster blade 33 is smaller than or equal to the diameter of the forward protruding bulging surface of the middle plate of the turbine. In the present application, by setting the rotation diameter of the supercharging vane to be smaller than the diameter of the turbine, the wind eye space formed when the turbine rotates is sufficient. Because when the turbine rotates, a wind eye with a certain diameter will be formed at the center of the circle, and no suction will be generated at the wind eye, thereby reducing the wind suction effect of the turbine. In the present application, by arranging supercharging blades at the position where the wind eye is formed when the turbine rotates, the suction effect of the turbine is obviously increased, thereby increasing the efficiency of the fan and reducing the noise. At the same time, because the length of the booster blade is greatly reduced compared with the blade length of the prior art, only a small amount of oil will remain on the blade, and the weight of the blade will not be increased due to the accumulation of oil, which enhances the suction Effect.

Although the embodiments disclosed in the present invention are as above, the described content is only an embodiment adopted for the convenience of understanding the present invention, and is not intended to limit the present invention. Anyone skilled in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention, The scope defined by the appended claims must still prevail.

Claims (10)

1. there is the range hood of turbocharging, including shell, the shell are internally provided with turbine assembly, the turbine Component includes plate in spiral case, the turbine and turbine that mutually assemble, is equipped with air-ducting ring on the spiral case, in the turbine in plate Between be equipped with axis hole, the motor shaft of electric rotating machine passes through axis hole, it is characterised in that is set in the end of motor shaft and turbine between plate There is supercharging blade, the rotating diameter of the supercharging blade and the diameter ratio of turbine are 0.3-0.7.

2. range hood according to claim 1, it is characterised in that the middle part of plate has prominent bulging in the turbine Face, the rotating diameter of the supercharging blade are less than or equal to the diameter in the bulging face of plate in the turbine.

3. range hood according to claim 2, it is characterised in that it is described supercharging blade rotating diameter and turbine it is straight The ratio between footpath is 0.4-0.5.

4. the range hood according to Claims 2 or 3, it is characterised in that it is described supercharging blade be located at the air-ducting ring with In the turbine between the bulging face of plate, and in the range of the centre 1/3rd of turbine depth.

5. range hood according to any one of claim 1-3, it is characterised in that the inside of the shell is additionally provided with wind Machine frame, the spiral case are fixed on the wind turbine frame.

6. range hood according to any one of claim 1-3, it is characterised in that the supercharging blade is by screwing spiral shell Mother is fixed on the end of motor shaft.

7. range hood according to claim 5, it is characterised in that the range hood further includes deflector, described to lead Flowing plate is arranged on the lower part of the wind turbine frame, and the outside of the deflector is additionally provided with guard.

8. range hood according to claim 5, it is characterised in that the back side of the wind turbine frame is equipped with hanging plate, the wind Maintenance panel is equipped with before machine frame.

9. range hood according to claim 5, it is characterised in that the top of the wind turbine frame is equipped with air outlet, described Air outlet is connected with discharge flue.

10. range hood according to claim 5, it is characterised in that the top of the wind turbine frame is equipped with electric component.