CN100523624C - Cooker hood - Google Patents

Abstract

The invention provides a range hood with double wind wheels. It includes a lower body and an upper body. The upper body is equipped with a motor, a rotor shaft mounted on the motor, left and right volutes, left and right wind wheels, and an anti-vibration fixing ring is arranged between the motor and the volute. The anti-vibration fixed ring is composed of an inner ring, an outer ring and an anti-vibration elastic ring. The anti-vibration elastic ring is arranged between the inner ring and the outer ring. The motor is fixed on the end face of the inner ring of the anti-vibration fixed ring. The two sides extend out, and the left and right wind wheels are fixedly installed on the left and right ends of the rotor shaft. There are suction ports corresponding to the left and right wind wheels. After adopting the above technical proposal, the advantages of increasing suction and exhaust volume, effectively reducing noise and being easy to disassemble and clean can be achieved.

Description

a range hood

Technical field:

The invention relates to the technical field of range hoods, in particular to a range hood with double wind wheels that increases suction and exhaust volume, effectively reduces noise, and is easy to disassemble and clean.

Background technique:

Traditional range hoods are all single-wind wheel, and the corresponding motor has only one side to lead out the rotor shaft. When the range hood with this structure is working, due to its asymmetry, the wear and noise of the motor rotating bearing are increased. Moreover, the general stove is arranged with two stoves on the left and right, and the single suction port of the single wind wheel range hood can only be arranged between the two stoves, and the draft effect is not ideal; The generated noise is loud.

The single-wheel range hood needs to ensure its suction and exhaust volume, so the length of the wind wheel is long, and it cannot be disassembled and cleaned after installation, so the suction and discharge performance, noise and hygiene indicators of the range hood cannot be guaranteed after use.

In addition, the existing volute is integrally formed by metal welding, and its air outlet has a rectangular structure. When the air outlet is connected to the circular check valve assembly, there will be a dead angle in the volute that is not conducive to the high-speed movement of the airflow, causing air movement to be blocked. , to reduce the suction and discharge volume.

In addition, the defects of the existing anti-shock structure lead to large resonant noise, and the traditional range hoods are packaged as a whole, requiring multiple support frames in the package, which seriously wastes the packaging space and increases the packaging cost.

Invention content:

The object of the present invention is to solve the above-mentioned shortcomings of the prior art, and provide a range hood with double wind wheels that increases the suction and exhaust volume, effectively reduces noise, and is easy to disassemble and clean.

In order to achieve the above object, the technical solution provided by the present invention is: a range hood, including a lower body and an upper body, the upper body is equipped with a motor, a rotor shaft installed on the motor, left and right volutes, left and right wind A shockproof fixing ring is arranged between the wheel, the motor and the volute. The anti-vibration fixed ring is composed of an inner ring, an outer ring and an anti-vibration elastic ring. The anti-vibration elastic ring is arranged between the inner ring and the outer ring. The motor is fixed on the end face of the inner ring of the anti-vibration fixed ring. The two sides extend out, and the left and right wind wheels are fixedly installed on the left and right ends of the rotor shaft. There are air suction ports corresponding to the left and right wind wheels.

The air outlets located at the tops of the left and right volutes gradually transition from a rectangle to a circular structure.

The bottom of the upper body is flexibly connected to the top of the lower body.

After adopting the above technical scheme, two wind wheels are installed symmetrically on the rotors on both sides of the motor, so that the motor is in a balanced state when working, and the air suction port of each wind wheel corresponds to a stove exhaust, due to the use of double wind wheels and double suction With the design of the air outlet, the equivalent cross-sectional area of the air suction port is greatly increased, the wind resistance generated by the air flow through the air suction port and the noise generated by the air flow are greatly reduced, while the motor power is reduced appropriately, the suction and exhaust volume can still be increased;

Since the motor is installed on the anti-vibration fixed ring, the vibration generated by the high-speed rotation of the wind wheel driven by the motor is effectively absorbed by the anti-vibration elastic ring, effectively reducing the resonance noise caused by the vibration of the motor and the wind wheel;

Due to the short length of the single wind wheel of the double wind wheel structure, the wind wheel can be disassembled in a limited space, and the wind wheel and the volute can be cleaned effectively. The dirt in the shell ensures the working performance and indicators of the range hood;

Because the bottom of the upper body and the top of the lower body of the range hood are connected by movable installation, the upper body and the lower body can be separated during packaging. Greatly reduced, lower costs.

Description of drawings:

Fig. 1 is the outline structural drawing of range hood of the present invention;

Fig. 2 is a split structure diagram of the range hood of the present invention;

Fig. 3 is a three-dimensional exploded view of the range hood of the present invention.

Detailed ways:

Now elaborate the present invention in conjunction with accompanying drawing:

As shown in accompanying drawings 1 and 3, the range hood includes a motor 1, a rotor shaft 2 mounted on the motor 1, left and right volutes 3, 4, left and right wind wheels 5, 6 and a bellows 7, An anti-vibration fixed ring 8 is arranged between the motor 1 and the left and right volutes 3 and 4, and the anti-vibration fixed ring 8 is composed of an inner ring 9, an outer ring 10 and an anti-vibration elastic ring 11, and the anti-vibration elastic ring 11 is arranged on the inner ring 9 and the outer ring 10, the rotor shaft 2 of the motor 1 extends to both sides of the motor 1, and the left and right wind wheels 5 and 6 are fixed on the left and right ends of the rotor shaft 2, and the left and right volutes 3.4 The outer ring 10 in the anti-vibration fixing ring 8 is movably connected between the joint surfaces, and the volute is made of plastics, which avoids the use of metal materials to increase the cost. The left and right volutes 3,4 are respectively provided with the left and right wind wheels 5 , 6 correspond to the air inlets 12,13, after the range hood is installed, the air inlets 12,13 of the left and right wind wheels 5,6 are correspondingly above the two stoves on the gas stove, and the left wind wheel 5 mainly absorbs the left stove, The right wind wheel 6 mainly absorbs the oil fume that the right stove produces.

The air outlet 15 at the top of the left and right volutes 5.6 gradually transitions from a rectangle to a circular structure, so the dead angle that affects the high-speed movement of the airflow in the volute can be eliminated.

When the above-mentioned range hood is disassembled and cleaned, the nuts 16, 17 of the rotor shaft 2 are loosened, and the left and right wind wheels 5, 6 are separated from the rotor shaft 2 and taken out respectively at the respective corresponding air suction ports 12, 13, and after taking them out, respectively Clean the inside of wheel 5.6 and volute 3,4.

The bottom of the above-mentioned bellows 7 is movably connected with the top of the lower body part 14. During packaging, the bellows 7 and the lower body part 14 can be detached and packaged separately. After adopting split-type independent packaging, the packaging volume can be reduced to simplify the packaging structure and save packaging costs. .

Claims (4)

1. A range hood comprises a lower body (14), an upper body (7), the upper body (7) is provided with a motor (1), a rotor shaft (2) installed on the motor (1), left, The right volute (3,4), the left and right wind wheels (5,6), the motor (1) and the left and right volutes (3,4) are provided with an anti-shock fixing ring (8), which is characterized in that: The anti-shock fixing ring (8) is composed of an inner ring (9), an outer ring (10) and an anti-shock elastic ring (11), and the anti-shock elastic ring (11) is arranged between the inner ring (9) and the outer ring (10). Between them, the rotor shaft (2) of the motor (1) extends to both sides of the motor (1), and the left and right wind wheels (5, 6) are fixedly installed on the left and right ends of the rotor shaft (2). The joint parts of the right volute (3, 4) are flexibly connected with the anti-vibration fixing ring (8), and the left and right volutes (3, 4) are respectively provided with suction valves corresponding to the left and right wind wheels (5, 6). Tuyere (12,13). 2. The range hood according to claim 1, characterized in that: the bottom of the upper body (7) is movably connected with the top of the lower body (14). 3. The range hood according to claim 1, characterized in that: a wire groove (18) is formed on the wall of the bellows (7) for the passage of data wires and power wires. 4. The range hood according to claim 1, characterized in that: the air outlets (15) located at the tops of the left and right volutes (3, 4) have a gradually transitioning shape from a rectangle to a circle.

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