CN216644296U - Wind guide structure for reducing noise of central range hood - Google Patents

Abstract

The utility model provides an air guide structure for reducing the noise of a central range hood, which consists of an air guide plate rear plate and an arc-shaped air guide plate; the air guide structure is installed and fixed through the air guide plate rear plate; the arc-shaped air deflector is positioned on the side surface of the volute; the air guide structure is arranged at an air inlet of the case. The air guide structure is arranged in the airflow direction, so that the air guide structure is convenient to install, the airflow entering the case can be effectively divided and guided, the arc-shaped structure can effectively reduce airflow circulation resistance, reduce aerodynamic noise and improve air performance, the airflow can be effectively prevented from flowing into an area with poor air flowability below the volute, and the air performance is improved. The arc-shaped air deflector is arranged on the side surface of the volute and is suitable for a central range hood with a large space, which adopts a main machine for feeding air by transverse airflow.

Description

Wind guide structure for reducing noise of central range hood

Technical Field

The utility model relates to an air guide structure of a range hood, in particular to an air guide structure for reducing the noise of a central range hood.

Background

The central range hood consists of a host, a terminal, a fire-proof valve and a cloud platform. One terminal is used for each household, and no motor is used, so that compared with the traditional range hood, noise reduction, an embedded intelligent system, air volume self-adaption and the like are realized; only one main machine is arranged at the outlet of the exhaust passage of the unit roof, and the indoor oil smoke suction and exhaust is completed by means of frequency conversion forced extraction and quintuple purification technology treatment.

After the terminal machine of the central range hood is opened, the roof main machine is started, meanwhile, the power distribution valve plate on the terminal machine is opened, and the roof main machine can forcibly pump the oil smoke in the exhaust passage, so that negative pressure is formed in the exhaust passage, the oil smoke is sucked out of the exhaust passage and then is subjected to centralized purification by the roof main machine, and finally, the oil smoke is harmlessly discharged into the atmosphere.

However, the central range hood has a large volute and needs to be supported by a steel frame, and when the range hood operates, airflow impacts a volute coaming and the steel frame to generate impact noise. Related art proposed for noise reduction of a center hood has not been found in the prior art.

Disclosure of Invention

In order to solve the technical problem and improve the user experience, the utility model provides the air guide structure capable of reducing the noise of the central range hood, so that the air flow circulation resistance in the case of the range hood is reduced, the flow condition is improved, the pneumatic noise is reduced, the effect is obvious, the air guide structure is simple and feasible, the installation is convenient, and the practicability is high.

In order to solve the technical problems, the utility model adopts the following technical scheme: an air guide structure for reducing the noise of a central range hood, which consists of an air guide plate rear plate and an arc-shaped air guide plate; the air guide structure is installed and fixed through the air guide plate rear plate; the arc-shaped air deflector is positioned on the side surface of the volute; the air guide structure is arranged at an air inlet of the case.

The air guide structure can divide the air flow entering the case from the air inlet, and the divided air flows enter two sides of the volute without interfering with each other, so that the impact of the air flow on the volute coaming and the steel frame is reduced, the air flow resistance is reduced, and the aerodynamic noise is reduced.

Preferably, the air deflector rear plate is connected with the mounting frame or the volute.

Preferably, in any of the above schemes, the rear plate of the air deflector is provided with a positioning groove and a screw hole, which respectively play a role in installation and fixation.

Preferably, in any of the above schemes, the mounting frame is a supporting steel frame.

In any of the above schemes, preferably, the molded line of the arc-shaped air deflector can also be V-shaped, Y-shaped, U-shaped or other special shapes as long as the function of shunting the inlet air to both sides is achieved.

In any of the above embodiments, preferably, the width H of the entire air guide structure is equal to the distance between the left and right sides of the steel frame, the distance between the rear plate of the air guide plate and the air guide center line is H, and H/H is 0.6.

In any of the above schemes, preferably, the projection width of the air guiding structure is the same as the width of the volute, or smaller than the width of the volute, or larger than the width of the volute and smaller than the width of the chassis.

In any of the above schemes, preferably, an oil leakage hole is arranged below the volute.

In any of the above embodiments, preferably, the air guide structure is an integral structure.

In any of the above schemes, preferably, the air guide structure may further include a sound absorption layer for absorbing noise.

The air guide structure is arranged in the airflow direction, so that the air guide structure is convenient to install, and can effectively distribute and guide the airflow entering the case, the arc-shaped structure can effectively reduce the airflow circulation resistance, reduce the pneumatic noise, improve the air performance, effectively prevent the airflow from flowing into an area with poor air fluidity below the volute, and improve the air performance. The arc-shaped air deflector is arranged on the side surface of the volute and is suitable for a central range hood with a large space of a main machine adopting transverse airflow for air intake.

Drawings

Fig. 1 is a schematic structural diagram of a central range hood and an air guide structure for reducing noise of the central range hood according to the present invention.

Fig. 2 is a front view of the structure shown in fig. 1.

Fig. 3 is a schematic view of the air flow direction at the air inlet of the central range hood having the air guiding structure shown in fig. 1.

Fig. 4 is a schematic diagram of relative positions of the volute and the air guide structure in the structure shown in fig. 1.

Fig. 5 is an exploded view of the volute and air guiding structure of the structure shown in fig. 1.

Fig. 6 is a front view of the relative positions of the volute and air guiding structure of the structure shown in fig. 1.

Figure 7 is a side view of the relative positions of the volute and air directing structure of the structure shown in figure 1.

Fig. 8 is a top view of the relative positions of the volute and air guiding structure of the structure shown in fig. 1.

Wherein, the meanings of each reference numeral are as follows:

1-a fan system; 2-case shell; 3, an air guide mechanism; 4-supporting the steel frame; 5-positioning a groove; 6-screw hole; 7-air deflector back plate; 8-arc air deflector.

The overall width of the H-wind guide structure is equal to the distance between the left side and the right side of the steel frame; h-the distance from the rear plate of the air deflector to the air deflection center line.

Detailed Description

In order that the utility model may be more fully and clearly understood, reference will now be made to the following description and accompanying drawings, which are included to provide a further understanding of the utility model.

Example 1

The embodiment provides an air guide structure for reducing noise of a central range hood, as shown in fig. 1-8, the air guide structure 3 is arranged at an air inlet of a chassis, and air entering the chassis from the air inlet is divided into two parts, which enter air inlets at two sides of a volute of a fan system 1 without interfering with each other; the air guide structure 3 consists of an air guide plate rear plate 7 and an arc-shaped air guide plate 8, the arc-shaped air guide plate 8 plays a role in shunting and guiding, and the air guide plate rear plate 7 plays a role in fixing; the air guide structure 3 is connected with a support steel frame 4 through the air guide plate rear plate 7, wherein the support steel frame 4 is a support structure of the volute; the arc-shaped air deflector 8 is positioned on the side surface of the volute.

This embodiment sets up wind-guiding structure 3 in quick-witted case air inlet department, and wind-guiding structure can shunt the air current that enters into quick-witted incasement portion from the air intake, and the air current plays the effect of reposition of redundant personnel and water conservancy diversion through wind-guiding structure 3's arc aviation baffle 8, and the both sides of the spiral case of the entering of air current mutual noninterference avoid the air current to spiral case bounding wall and support the impact of steelframe 4, reduce the air current flow resistance, consequently can reduce aerodynamic noise.

Because a part of space is reserved below the volute to fix the volute and the support steel frame 4 for arranging the fixing screws, the air fluidity in the area is poor, the air guide structure can well prevent the air flow from entering the area, and the integral air performance of the central range hood is improved.

The whole width H of wind-guiding structure equals steelframe left and right sides distance, and the aviation baffle backplate is H to the distance of wind-guiding central line, and H/H is 0.6, and the effect of reposition of redundant personnel and water conservancy diversion is better, can effectively improve the air quality, reduce aerodynamic noise, has 3 dB's the volume of making an uproar of falling.

The rear plate of the air deflector is provided with a positioning groove 5 and a screw hole 6 which respectively play a role in installation and fixation.

In this embodiment, the molded lines of the arc-shaped air deflectors 8 may be V-shaped, Y-shaped, U-shaped or other special shapes, as long as the function of shunting the inlet air to both sides is achieved.

In this embodiment, the projection width of the air guiding structure 3 is the same as the width of the volute, or smaller than the width of the volute, or larger than the width of the volute and smaller than the width of the chassis.

In this embodiment, the air guiding structure 3 is an integral structure.

The air guide structure 3 is arranged, so that the installation is convenient, the air flow entering the case can be effectively divided and guided, the arc-shaped structure can effectively reduce the air flow circulation resistance, reduce the aerodynamic noise and improve the air performance, the air flow can be effectively prevented from flowing into the area with poor air flowability below the volute, and the air performance is improved. Meanwhile, the arc-shaped air deflector 8 is arranged on the side surface of the volute, and is suitable for a central range hood with a large space of a host machine adopting transverse airflow for air intake.

Example 2

The embodiment provides an air guide structure for reducing the noise of a central range hood; unlike embodiment 1, in this embodiment, the air guide structure 3 is connected to the scroll casing.

Example 3

The embodiment provides an air guide structure for reducing the noise of a central range hood; unlike embodiment 1, an oil leak hole is provided below the scroll case.

Example 4

The embodiment provides an air guide structure for reducing the noise of a central range hood; different from the above embodiments, the wind guiding structure 3 may further be provided with a sound absorbing layer for absorbing noise.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An air guide structure for reducing the noise of a central range hood is characterized in that the air guide structure consists of an air guide plate rear plate and an arc-shaped air guide plate; the air guide structure is installed and fixed through the air guide plate rear plate; the arc-shaped air deflector is positioned on the side surface of the volute; the air guide structure is arranged at an air inlet of the case.

2. The air guide structure of claim 1, wherein the air guide plate rear plate is connected with a mounting frame or a volute.

3. The wind guide structure of claim 2, wherein the rear plate of the wind guide plate is provided with a positioning groove and a screw hole for installation and fixation.

4. The air guide structure of claim 2, wherein the mounting frame is a supporting steel frame.

5. The wind guide structure of claim 1, wherein the molded line of the arc-shaped wind guide plate is V-shaped, Y-shaped or U-shaped, and the wind is divided towards two sides.

6. The air guide structure of claim 1, wherein the overall width H of the air guide structure is equal to the distance between the left side and the right side of the mounting frame, the distance between the rear plate of the air guide plate and the air guide center line is H, and H/H is 0.6.

7. The wind guide structure according to claim 1, wherein the projected width of the wind guide structure is the same as, smaller than, larger than, and smaller than the width of the volute.

8. The air guide structure according to claim 1, wherein an oil leak hole is provided below the scroll case.

9. The air guide structure according to claim 1, wherein the air guide structure is a unitary structure.

10. The wind guide structure according to any one of claims 1 to 9, wherein a sound absorbing layer is further provided on the wind guide structure for absorbing noise.

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