A rotary suction type smoke machine

Abstract

The invention discloses a rotary suction type range hood, comprising a smoke collecting hood and a bellows assembly, wherein the smoke collecting hood comprises a smoke inlet portion and a smoke guiding portion located below the smoke inlet portion, the smoke inlet portion is provided with a smoke outlet at the top and a smoke inlet area at the bottom, the bellows assembly is arranged on the top of the smoke collecting hood and is connected with the smoke outlet, a central air duct extending vertically and dividing the smoke guiding surface into two is convexly provided on the smoke guiding surface in the front of the smoke guiding portion, a central exhaust hole arranged vertically is provided on the opposite side walls of the central air duct, side protrusion structures extending vertically are convexly provided on both sides of the smoke guiding surface in the front of the smoke guiding portion, a side air duct is formed in the side protrusion structure, and side exhaust holes arranged vertically are provided on the front of the side protrusion structure, the inner side wall of the side protrusion structure is a swirl surface for rotating the airflow passing therethrough, the structure is simple, can prevent oil smoke from diffusing and escaping, and achieve the effect of efficiently collecting smoke.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a rotary suction range hood. Background Art

[0002] Range hoods are the main tool for collecting oil fumes in kitchens. How to improve the suction efficiency of range hoods has always been an important part of range hood design and research. When traditional range hoods are sucking air, their suction range is a hemispherical area, and gases from all directions are sucked indiscriminately. This suction method has a higher air flow rate near the air inlet, while the air flow rate far from the air inlet will drop rapidly as the distance from the air inlet increases. Therefore, at the bottom of the air inlet, the upward speed of the air decreases, resulting in insufficient upward suction force, and it is easily disturbed by external factors, such as the disturbance of airflow caused by people walking, fans or air conditioning, so that oil smoke or pollutants escape with the flow of disturbed airflow, resulting in poor smoke collection and suction effects of the range hood. Summary of the invention

[0003] The present invention aims to solve at least one of the problems existing in the prior art to a certain extent. To this end, the present invention aims to provide a rotary suction type range hood with a simple structure, which can prevent the diffusion and escape of oil smoke and achieve the effect of efficiently collecting smoke.

[0004] The above purpose is achieved through the following technical solutions:

[0005] The smoke exhaust fan of claim 1, wherein the smoke exhaust fan is an air intake fan and a smoke exhaust port is located adjacent the smoke exhaust port.

[0006] In some embodiments, the swirl surface connects the smoke guiding surface on the front side of the smoke guiding part and the inner side wall of the side protrusion structure, the central exhaust hole is horizontally facing the swirl surface, the front side of the side protrusion structure is an inclined surface inclined from top to bottom and backward, and the side exhaust hole is horizontally facing forward.

[0007] In some embodiments, the swirl surface is an arc surface extending from the smoke guiding surface on the front side of the smoke guiding part toward the front side of the side protrusion structure, and any horizontal cross-section of the arc surface is a quarter arc, one end of the arc is tangent to the smoke guiding surface on the front side of the smoke guiding part, and the other end is tangent to the front end of the inner wall of the side protrusion structure.

[0008] In some embodiments, the arc diameter of the swirl surface increases linearly from bottom to top.

[0009] In some embodiments, the distance between the center of the side exhaust hole and the edge of the swirl surface is less than 20 mm.

[0010] In some embodiments, mounting holes are respectively provided on both sides of the top of the smoke hood, the air supply device is provided in the mounting holes, and the mounting holes are connected to the corresponding central exhaust hole and the corresponding side air duct through the corresponding ventilation duct.

[0011] In some embodiments, the air supply device includes a fan and an air intake cover, the fan is disposed in the mounting hole, and the air intake cover is disposed at an air intake end of the mounting hole.

[0012] In some embodiments, the air supply device further includes a filter component, and the filter component is disposed between the air intake cover and the fan.

[0013] In some embodiments, the ventilation duct includes a horizontal duct and a vertical duct, wherein the horizontal duct is connected to the mounting hole, and one end of the horizontal duct is connected to the side airway, and the other end is connected to the vertical duct, and the vertical duct is connected to the corresponding central exhaust hole.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. The rotary suction type smoke hood of the present invention has a simple structure and can prevent the diffusion and escape of oil smoke, thereby achieving the effect of efficiently collecting smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view of a rotary suction type range hood according to an embodiment of the present invention;

[0017] Figure 2 is a bottom view of the rotary suction type range hood according to an embodiment of the present invention;

[0018] Figure 3 is a partial exploded view of the rotary suction type range hood in an embodiment of the present invention;

[0019] Figure 4 It is a rear view of the rotary suction type range hood in the embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0021] Embodiment 1: Figures 1 to 4 As shown, the present embodiment provides a rotary suction type range hood, comprising a smoke collecting hood 1 and a bellows assembly 2, the smoke collecting hood 1 having a smoke inlet portion 11 and a smoke guiding portion 12 located below the smoke inlet portion 11, the smoke inlet portion 11 having a smoke outlet at the top and a smoke inlet area 110 at the bottom, the bellows assembly 2 being arranged on the top of the smoke collecting hood 1 and being connected to the smoke outlet, for drawing out smoking oil and forming an upward suction force on the swirling gas, a central airway 13 extending vertically and dividing the smoke guiding surface 120 into two is convexly provided on a smoke guiding surface 120 on the front side of the smoke guiding portion 12, central exhaust holes 130 arranged vertically are provided on opposite side walls of the central airway 13, side protrusion structures 14 extending vertically are convexly provided on both sides of the smoke guiding surface 120 on the front side of the smoke guiding portion 12, and the side protrusions 14 extending vertically are convexly provided on the side protrusions A side air duct 140 is formed in the outlet structure 14, and a side exhaust hole 141 arranged vertically is provided on the front side of the side protrusion structure 14. The inner wall of the side protrusion structure 14 is a swirl surface 142 for rotating the airflow passing therethrough. The airflow ejected from the central exhaust hole 130 forms a side wind curtain that can flow along the smoke guide surface 120 to the swirl surface 142 and then turn and rotate. The airflow ejected from the side exhaust hole 141 forms a side wind curtain that can drive the surrounding airflow to flow, or flows along the smoke guide surface 120 to the swirl surface 142 and then turn and rotate. An air supply device 4 and a ventilation duct 5 are provided on both sides of the smoke collecting hood 1, wherein one end of the ventilation duct 5 is connected to the air supply device 4, and the other end is connected to the corresponding central exhaust hole 130 and the corresponding side air duct 140. For example, one end of the ventilation duct 5 located on the left is connected to the air supply device 4 located on the left, and the other end is connected to the central exhaust hole 130 located on the left side of the central air duct 13 and the side air duct 140 located on the left side; one end of the ventilation duct 5 located on the right is connected to the air supply device 4 located on the right, and the other end is connected to the central exhaust hole 130 located on the right side of the central air duct 13 and the side air duct 140 located on the right side.

[0022] The rotary suction type range hood of the present embodiment has a simple structure and can prevent the diffusion and escape of oil smoke, thereby achieving the effect of efficiently collecting smoke.

[0023] In this embodiment, the ventilation duct 5 is formed by connecting several sections of hard pipes, and of course, other forms such as a hose + adapter can also be used. The central exhaust hole 130 and the side exhaust hole 141 can be set in other forms, such as a long hole, a polygonal hole, a star-shaped hole, etc., as long as they can play the role of jetting out.

[0024] Specifically, the air supply device 4 is arranged in the smoke collecting hood 1, and the air supply device 4 sprays the external gas from the central exhaust hole 130 of the central air duct 13 and the side exhaust hole 141 of the side air duct 140 through the ventilation duct 5. Due to the gas viscosity effect, these high-speed exhaust airflows pass through the swirl surface 142 in the area below the center of the smoke outlet of the smoke collecting hood 1, and then the airflow turns and rotates, cooperating with the suction force of the range hood itself, thereby forming a unique spiral airflow, which can form a swirl suction and gathering effect before the oil smoke gas diffuses, thereby achieving the effect of efficiently gathering smoke.

[0025] When the range hood is working, the bellows assembly 2 and the air supply device 4 are started, and the upward suction force generated by the bellows assembly 2 drives the external airflow and oil smoke to flow from the smoke inlet area 110 into the smoke inlet part 11 of the smoke hood 1, and then pass through the bellows assembly 2 and be discharged to the outside through the smoke exhaust duct of the range hood. The air supply device 4 ejects external gas from the central exhaust hole 130 of the central air duct 13 and the side exhaust hole 141 of the side air duct 140 through the ventilation duct 5. Due to the gas viscosity effect, the gas ejected from the side exhaust hole 141 forms a side wind curtain, which can not only cut the oil smoke into different areas, but also drive the surrounding airflow to flow together and generate radial force. The airflow forms swirl gas under the cooperation of the swirl surface 142, and forms a spiral upward airflow under the cooperation of the upward suction force generated by the bellows assembly 2. At the same time, the airflow ejected from the central exhaust hole 130 of the central air duct 13 can flow along the smoke guide surface 120 to the swirl surface 142 and then turn and rotate, so that the oil smoke is sucked upward before it diffuses, preventing the oil smoke from diffusing and escaping, thereby improving the rotating smoking effect.

[0026] Specifically, the smoke guide portion 12 of the smoke hood 1 is located at the rear side of the bottom surface of the smoke inlet portion 11 and the back sides of the two are located in the same plane, so that the smoke inlet portion 11 and the smoke guide portion 12 form a "7" shape, and the front side of the bottom surface of the smoke inlet portion 11 is used to prevent the oil smoke from escaping upward. The smoke inlet area 110 is arranged at the front side of the bottom surface of the smoke inlet portion 11, so that the spiral upward airflow flows into the interior of the smoke inlet portion 11 through the smoke inlet area 110. Preferably, the smoke inlet area 110 is composed of a plurality of smoke inlet holes, so that the smoke inlet area 110 can act as an oil net, which can achieve the oil smoke separation effect on the one hand, and on the other hand, the oil net can be omitted, simplifying the assembly process and reducing the manufacturing cost.

[0027] Preferably, the swirl surface 142 connects the smoke guide surface 120 on the front of the smoke guide part 12 and the inner side wall of the side protrusion structure 14, and the central exhaust hole 130 is horizontally facing the swirl surface 142, which can facilitate the airflow ejected from the central exhaust hole 130 of the central airway 13 to form a flow along the smoke guide surface 120 to the swirl surface 142 and then turn and rotate, the front of the side protrusion structure 14 is an inclined surface tilted from top to bottom and backward, and the side exhaust hole 141 is horizontally facing forward, which can facilitate the gas ejected from the side exhaust hole 141 to form a side wind curtain, which can not only cut the oil smoke into different areas, but also drive the surrounding airflow to flow together and generate radial force. The above structure is simple, the design is reasonable and ingenious, which is conducive to the airflow to form swirl gas, and form a spiral upward airflow under the cooperation of the upward suction force generated by the bellows assembly 2, so that the oil smoke is sucked upward and gathered before diffusion, preventing the oil smoke from diffusing and escaping, and improving the rotary smoking effect.

[0028] Furthermore, the swirl surface 142 is an arc surface extending from the smoke guide surface 120 on the front side of the smoke guide part 12 toward the front side of the side protrusion structure 14, and any horizontal cross section of the arc surface is a quarter arc, one end of the arc is tangent to the smoke guide surface 120 on the front side of the smoke guide part 12, and the other end is tangent to the front end of the inner wall of the side protrusion structure 14 in the front-to-back direction. It has a simple structure, reasonable and ingenious design, which is conducive to forming swirl gas in the airflow, and forming a spiral upward airflow under the cooperation of the upward suction force generated by the bellows assembly 2, so that the oil smoke is sucked upward before diffusion, preventing the oil smoke from diffusing and escaping, and improving the rotating smoking effect.

[0029] Furthermore, the arc diameter of the swirl surface 142 increases linearly from bottom to top, so that under the cooperation of the central airway 13, the side airway 140 and the swirl surface 142, the tornado effect of the airflow is enhanced, which is beneficial to enhance the effect of swirling and gathering oil smoke.

[0030] In this embodiment, the distance W between the center of the side exhaust hole 141 and the edge of the swirl surface 142 is less than 20 mm. This can facilitate the formation of a side wind curtain by the gas ejected from the side exhaust hole 141, and form a spiral upward airflow under the cooperation of the upward suction force generated by the bellows assembly 2, so that the oil smoke is sucked upward before it spreads, preventing the oil smoke from spreading and escaping, and improving the rotating smoking effect.

[0031] Preferably, mounting holes 100 are respectively provided on both sides of the top of the smoke hood 1, and the air supply device 4 is provided in the mounting holes 100, and the mounting holes 100 are connected with the corresponding central exhaust hole 130 and the corresponding side air duct 140 through the corresponding ventilation duct 5. Specifically, the mounting hole 100 on the left side is connected with the central exhaust hole 130 on the left side of the central air duct 13 and the side air duct 140 on the left side through the left ventilation duct 5; the mounting hole 100 on the right side is connected with the central exhaust hole 130 on the right side of the central air duct 13 and the side air duct 140 on the right side through the right ventilation duct 5. It has a simple structure, reasonable and ingenious design, which can facilitate the installation and fixing of the air supply device 4.

[0032] More preferably, the air supply device 4 includes a fan 401 and an air intake cover 402, the fan 401 is arranged in the mounting hole 100, and the air intake cover 402 is arranged at the air intake end of the mounting hole 100, and a plurality of air intake holes for outside air to pass through are provided on the air intake cover 402, and the air intake cover 402 is arranged at the air intake end of the mounting hole 100 and is flush with the outer end surface of the mounting hole 100. In this way, by adding the air intake cover 402, external impurities can be prevented from entering the mounting hole 100 and the fan 401, thereby preventing external impurities from clogging the central exhaust hole 130 and the side exhaust hole 141, thereby ensuring the performance of the range hood.

[0033] In this embodiment, the air supply device 4 further includes a filter member 403, which is disposed between the air inlet cover 402 and the fan 401. The filter member 403 is used to filter external impurities to prevent the external impurities from contaminating the air supply device 4, the ventilation duct 5, the central air passage 13 and the side air passage 140 after the range hood has been working for a long time, thereby preventing the central exhaust hole 130 and the side exhaust hole 141 from being blocked. Preferably, the filter member 403 is rectangular, and a plurality of filter holes are disposed on the top and bottom surfaces of the filter member 403, so that double filtering can be formed to improve the filtering effect, thereby preventing the air supply device 4, the ventilation duct 5, the central air passage 13 and the side air passage 140 from being contaminated, and further improving the usability of the range hood.

[0034] In this embodiment, the ventilation duct 5 includes a horizontal duct 501 and a vertical duct 502, wherein the horizontal duct 501 is connected to the mounting hole 100, and one end of the horizontal duct 501 is connected to the corresponding side air duct 140, and the other end is connected to the vertical duct 502, and the vertical duct 502 is connected to the corresponding central exhaust hole 130. Its structure is simple, and the design is reasonable and ingenious, which can facilitate the connection between the mounting hole 100 and the corresponding side air duct 140 and the corresponding central exhaust hole 130. Taking the ventilation duct 5 located on the left side as an example, one end of it is connected to the side air duct 140 located on the left side, and the other end is connected to the vertical duct 502, and the vertical duct 502 is connected to the central exhaust hole 130 located on the left side of the central air duct 13. Similarly, the ventilation duct 5 located on the right side has the same connection structure with the side air duct 140 located on the right side and the central exhaust hole 130 located on the right side of the central air duct 13, which will not be repeated here.

[0035] When the range hood is working, the bellows assembly 2 and the air supply device 4 are started, and the bellows assembly 2 drives the outside air to flow from the smoke inlet area 110 into the smoke inlet portion 11 of the smoke collecting hood 1, and then passes through the bellows assembly 2 and is discharged to the outside through the smoke exhaust pipe of the range hood. The air supply device 4 drives the outside air to flow from the air inlet cover 402 through the filter component 403 into the corresponding ventilation duct 5. The outside air flowing into the ventilation duct 5 will be ejected from the corresponding central exhaust hole 130 in the central air duct 13 and the corresponding side exhaust hole 141 of the side air duct 140.

[0036] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A rotary suction type range hood, comprising a smoke collecting hood (1) and a bellows assembly (2), the smoke collecting hood (1) comprising a smoke inlet portion (11) and a smoke guiding portion (12) located below the smoke inlet portion (11), the smoke inlet portion (11) being provided with a smoke outlet at the top and a smoke inlet area (110) at the bottom, the smoke inlet area (110) being composed of a plurality of smoke inlet holes, the bellows assembly (2) being arranged at the top of the smoke collecting hood (1) and being connected to the smoke outlet, It is characterized in that A central air passage (13) extending vertically and dividing the smoke guiding surface (120) into two is convexly provided on the smoke guiding surface (120) at the front of the smoke guiding portion (12); central exhaust holes (130) arranged vertically are provided on opposite side walls of the central air passage (13); side protruding structures (14) extending vertically are convexly provided on both sides of the smoke guiding surface (120) at the front of the smoke guiding portion (12); side air passages (140) are formed in the side protruding structures (14); side exhaust holes (141) arranged vertically are provided on the front of the side protruding structures (14); and the inner side walls of the side protruding structures (14) are swirl surfaces (142) for rotating airflow passing therethrough; An air supply device (4) and a ventilation duct (5) are provided on both sides of the smoke collecting hood (1), wherein one end of the ventilation duct (5) is connected to the air supply device (4), and the other end is connected to the corresponding central exhaust hole (130) and the corresponding side air duct (140); The central exhaust hole (130) is horizontally oriented toward the swirl surface (142), the front surface of the side protrusion structure (14) is an inclined surface inclined from top to bottom and backward, and the side exhaust hole (141) is horizontally oriented toward the front; The swirl surface (142) is an arc surface extending from the smoke guiding surface (120) on the front side of the smoke guiding portion (12) toward the front side of the side protruding structure (14), and the arc diameter of the swirl surface (142) increases linearly from bottom to top.

2. A rotary suction type smoke hood according to claim 1, It is characterized in that Any horizontal cross section of the arc surface is a quarter arc, one end of the arc is tangent to the smoke guiding surface (120) on the front side of the smoke guiding portion (12), and the other end is tangent to the front end of the inner side wall of the side protruding structure (14).

3. A rotary suction type smoke machine according to claim 1 or 2, It is characterized in that The distance between the center of the side exhaust hole (141) and the edge of the swirl surface (142) is less than 20 mm.

4. A rotary suction type smoke hood according to claim 1 or 2, It is characterized in that Mounting holes (100) are respectively arranged on both sides of the top of the smoke collecting hood (1), the air supply device (4) is arranged in the mounting hole (100), and the mounting hole (100) is connected to the corresponding central exhaust hole (130) and the corresponding side air duct (140) through the corresponding ventilation duct (5).

5. A rotary suction type smoke hood according to claim 4, It is characterized in that The air supply device (4) comprises a fan (401) and an air intake cover (402); the fan (401) is arranged in the mounting hole (100), and the air intake cover (402) is arranged at the air intake end of the mounting hole (100).

6. A rotary suction type smoke hood according to claim 5, It is characterized in that The air supply device (4) further comprises a filter component (403), wherein the filter component (403) is arranged between the air intake cover (402) and the fan (401).

7. The rotary suction type smoke hood according to claim 4, It is characterized in that The ventilation duct (5) comprises a horizontal duct (501) and a vertical duct (502), wherein the horizontal duct (501) is connected to the mounting hole (100), and one end of the horizontal duct (501) is connected to the side air duct (140), and the other end is connected to the vertical duct (502), and the vertical duct (502) is connected to the corresponding central exhaust hole (130).

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