A smoke collecting hood and a range hood

Abstract

The present invention discloses a smoke collecting hood and a range hood. The smoke collecting hood includes a hood body and an air curtain generating part arranged on the hood body. An oil fume suction port is provided on the hood body, and an oil net is arranged on the oil fume suction port. A strip-shaped air port is provided at the bottom of the front end of the hood body. The air curtain generating part includes at least one fan device, a gas guide box and a flow guide plate. The fan device is arranged in the hood body. One end of the gas guide box is communicated with the fan device, and the other end of the gas guide box is communicated with the outside through the strip-shaped air port. The flow guide plate is arranged on the bottom of the front end of the hood body, and the flow guide plate is located on one side of the strip-shaped air port. An arc-shaped convex part for air curtain swirling is provided on the front side surface of the flow guide plate. A smoke collecting hood of the present invention has the advantages of reducing the occupied space and improving the smoke collecting and smoking effect.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, and in particular to a smoke collecting hood.

[0002] The present invention also relates to a range hood including the above-mentioned smoke collecting hood. Background Art

[0003] Range hoods are the main means for capturing indoor kitchen oil fumes. How to improve the suction efficiency of range hoods has always been an important content in the design and research of range hoods. Moreover, a major development trend of range hoods now is miniaturization, trying to provide users with a larger operating space and reducing the sense of space depression. The depth of the smoke collecting hood of existing top-mounted range hoods generally exceeds 500 mm, occupying too much space and often causing users to bump their heads. The depth of side-mounted range hoods is generally less than that of top-mounted range hoods, and most of them adopt the form of outwardly flipping plates to increase the effect of gathering and sucking oil fumes. However, the outwardly flipping plates will further encroach on the user's use space and affect the user's vision. Summary of the Invention

[0004] The purpose of the present invention is to provide a smoke collecting hood, and its advantage is that it realizes reducing the occupied space and improving the effect of gathering and sucking oil fumes.

[0005] A smoke collecting hood of the present invention includes a hood body and an air curtain generating part arranged on the hood body. An oil fume suction port is provided on the hood body, and an oil net is provided on the oil fume suction port. A strip-shaped air port is provided at the bottom of the front end of the hood body. The air curtain generating part includes at least one fan device, a gas guide box and a diversion plate. The fan device is arranged in the hood body. One end of the gas guide box is communicated with the fan device, and the other end of the gas guide box is communicated with the outside through the strip-shaped air port. The diversion plate is arranged on the bottom of the front end of the hood body, and the diversion plate is located on one side of the strip-shaped air port. An arc-shaped convex part for air curtain swirling is provided on the front side surface of the diversion plate.

[0006] A smoke collecting hood of the present invention may also be:

[0007] The diversion plate is an arc-shaped plate.

[0008] The diversion plate is a flat convex plate, and the rear side surface of the diversion plate is a vertical plane.

[0009] The included angle between the upper tangent line and the rear side surface of the arc-shaped convex part is 20 - 40 degrees, the included angle between the lower tangent line and the rear side surface of the arc-shaped convex part is 35 - 60 degrees, and the fillet diameter of the arc-shaped convex part is 40 - 70 mm.

[0010] The distance between the upper end and the lower end of the diversion plate is 80 - 150 mm, and the fillet of the arc-shaped convex part is close to the lower end of the diversion plate.

[0011] The upper end of the deflector is rotatably arranged at the front bottom of the hood body.

[0012] A driving mechanism for driving the deflector to automatically turn up and down is further arranged in the hood body, and the driving mechanism is connected to the rear side surface of the deflector.

[0013] A smoke collecting hood of the present invention has the advantages over the prior art that it realizes reducing the occupied space and improving the smoke collecting effect.

[0014] The present invention also provides a range hood, which includes a main machine part and the above-mentioned smoke collecting hood. The smoke collecting hood is connected to the main machine part. The fan passage of the main machine part is communicated with the smoke suction port of the hood body, and the fan device is connected to the electric control device of the main machine part.

[0015] A range hood of the present invention may also be:

[0016] The range hood is a top suction range hood.

[0017] The range hood is a side suction range hood.

[0018] A range hood of the present invention has the advantages over the prior art that, since it includes the above-mentioned smoke collecting hood, it realizes the effects of reducing the occupied space and improving the smoke suction performance, thereby improving the user experience. Description of the Drawings

[0019] Figure 1 It is a perspective structural schematic diagram of a smoke collecting hood of the present invention.

[0020] Figure 2 It is a schematic diagram of a swirling air curtain for preventing oil fume from overflowing of a smoke collecting hood of the present invention.

[0021] Figure 3 It is a schematic diagram after the deflector of a smoke collecting hood of the present invention is turned up.

[0022] Figure 4 It is a bottom view three-dimensional structural schematic diagram of a smoke collecting hood of the present invention.

[0023] Figure 5 It is a top view three-dimensional structural schematic diagram of a smoke collecting hood of the present invention.

[0024] Figure 6 It is a front view three-dimensional structural schematic diagram of a smoke collecting hood of the present invention.

[0025] Description of the Drawing Numbers

[0026] 1. Hood body; 11. Oil screen; 12. Strip-shaped air vent; 13. Air intake hole; 2. Air curtain generating part; 21. Fan device; 22. Air guide box; 23. Deflector; 231. Arc-shaped convex part; 3. Main body part. Detailed implementation mode

[0027] The following is a further detailed description of a smoke collecting hood of the present invention in conjunction with the attached drawings Figures 1 to 6 of the present invention.

[0028] For a smoke collecting hood of the present invention, please refer to Figures 1 to 6 the relevant drawings, including a hood body 1 and an air curtain generating part 2 provided on the hood body 1.

[0029] The hood body 1 is provided with a smoke suction port for communicating with the fan passage of the range hood, an oil screen 11 is provided on the smoke suction port, and a strip-shaped air vent 12 is provided at the bottom of the front end of the hood body 1.

[0030] The air curtain generating part 2 includes at least one fan device 21, an air guide box 22 and a deflector 23. Preferably, there are two fan devices 21, and the two fan devices 21 are respectively arranged inside the left and right sides of the hood body 1. An air intake hole 13 for the fan device 21 to suck air is provided at the upper end of the hood body 1.

[0031] One end of the air guide box 22 is communicated with the fan device 21, and the other end of the air guide box 22 is communicated with the outside through the strip-shaped air vent 12, so that the air flow generated by the fan device 21 is blown downward through the air guide box 22 and the strip-shaped air vent 12.

[0032] For example, there are four strip-shaped air vents 12, and the four strip-shaped air vents 12 are arranged in a straight line. A cavity is provided in the middle of the air guide box 22. Two air inlet interfaces are provided at one end of the air guide box 22, and the two air inlet interfaces are respectively and hermetically communicated with the air outlet of the two fan devices 21. Four air outlet interfaces are provided at the other end of the air guide box 22, and the four air outlet interfaces are respectively and hermetically communicated with the four strip-shaped air vents 12 one by one.

[0033] Of course, the number of the strip-shaped air vents 12 is not limited to four, and can be less than four or more than four. For example, the strip-shaped air vent 12 can also be one, and the length between the left and right ends of the strip-shaped air vent 12 is equal to the length between the left and right ends of the smoke collecting hood. Those skilled in the art can select the number of the strip-shaped air vents 12 according to actual needs.

[0034] The deflector 23 is arranged on the bottom of the front end of the hood body 1, and the deflector 23 is located on one side of the strip-shaped air vent 12. For example, the deflector 23 is located at the rear side of the strip-shaped air vent 12. An arc-shaped convex part 231 for air curtain swirling is provided on the front side of the deflector 23.

[0035] Working principle: As Figure 2As shown, A is a swirling air curtain that blocks the overflow of cooking fumes, and B is the cooking fumes. For example, when the smoke collecting hood is applied in the top suction mode to suck cooking fumes, the airflow generated by the fan device 21 blows downward through the strip-shaped air port 12 and flows through the arc-shaped convex part 231 of the deflector 23. The function of the deflector 23 is to induce the airflow. Due to the Coanda effect, this airflow will move along the surface of the arc-shaped convex part 231. In addition, due to the viscous effect of the air, the outermost airflow will also move along with this airflow. In this way, although the physical boundary of the deflector 23 does not exceed the hood body 1 (that is, the front end of the deflector 23 does not exceed the front end of the hood body 1), the induced inward swirling range and the function of shielding the outward expansion of the cooking fumes exceed this physical boundary (that is, the front end of the induced airflow exceeds the front end of the hood body 1, and the airflow swirls towards the cooking fume suction port), achieving the reduction of space occupation and the improvement of the effect of gathering and sucking cooking fumes.

[0036] A smoke collecting hood of the present invention, please refer to Figures 1 to 6 the relevant figures. On the basis of the previous technical solutions, it can also be: the deflector 23 is a flat convex plate, and the rear side surface of the deflector 23 is a vertical plane. Of course, the deflector 23 is not limited to being a flat convex plate. For example, the deflector 23 can also be an arc-shaped plate. Preferably, the deflector 23 is a flat convex plate, and the flat convex plate has a better effect of gathering cooking fumes than the arc-shaped plate.

[0037] A smoke collecting hood of the present invention, please refer to Figures 1 to 6 the relevant figures. On the basis of the previous technical solutions, it can also be: when the deflector 23 is a flat convex plate, the included angle between the upper tangent line of the arc-shaped convex part 231 and the rear side surface is 20 - 40 degrees, the included angle between the lower tangent line of the arc-shaped convex part 231 and the rear side surface is 35 - 60 degrees, the fillet diameter of the arc-shaped convex part 231 is 40 - 70 mm, the distance between the upper end and the lower end of the deflector 23 is 80 - 150 mm, and the fillet of the arc-shaped convex part 231 is close to the lower end of the deflector 23.

[0038] When the included angle between the upper tangent line of the arc-shaped convex part 231 and the rear side surface is 30 degrees, the included angle between the lower tangent line of the arc-shaped convex part 231 and the rear side surface is 47 degrees, the fillet diameter of the arc-shaped convex part 231 is 50 mm, and the distance between the upper end and the lower end of the deflector 23 is 100 mm, the best effect of gathering cooking fumes is achieved, and the effect of minimizing the occupied space is also achieved.

[0039] A smoke collecting hood of the present invention, please refer to Figures 1 to 6With reference to the relevant drawings, based on the previous technical solutions, it can also be: The upper end of the deflector 23 is rotatably arranged at the bottom of the front end of the hood 1. For example, both the left and right sides of the upper end of the deflector 23 are rotatably arranged at the bottom of the front end of the hood 1 through mounting shafts. When the oil fume extraction work is in progress, the user flips the deflector 23 downward until the rear side of the deflector 23 is perpendicular to the horizontal plane. When the work is finished, the user flips the deflector 23 upward until the rear side of the deflector 23 abuts against the bottom surface of the hood 1, thereby achieving the effect of further reducing the occupied space.

[0040] A smoke collecting hood of the present invention, please refer to Figures 1 to 6 With reference to the relevant drawings, based on the previous technical solutions, it can also be: A driving mechanism for driving the deflector 23 to automatically flip up and down is further provided in the hood 1. The driving mechanism is fixedly connected or rotatably hinged to the rear side of the deflector 23. For example, the driving mechanism includes a reduction motor, a rocker arm arranged on the power shaft of the reduction motor, and a connecting rod with both ends respectively connected to the rocker arm and the deflector 23. Of course, the automatic flipping method of the deflector 23 is not limited to the above embodiments, and those skilled in the art can select the driving method according to actual needs.

[0041] The present invention also provides a range hood. For example, the range hood is a top suction range hood, including a main body part 3 and the above-mentioned smoke collecting hood. The smoke collecting hood is connected to the main body part 3. The air duct of the fan in the main body part 3 is communicated with the oil fume suction port of the hood 1, and the fan device 21 is connected to the electric control device of the main body part 3. A range hood of the present invention, due to including the above-mentioned smoke collecting hood, thus achieves the effects of reducing the occupied space and improving the oil fume suction performance, thereby enhancing the user experience.

[0042] Of course, the above-mentioned smoke collecting hood is not limited to being applied to a top suction range hood, and can also be applied to a side suction range hood. For example, the strip-shaped air port 12 is arranged at the upper part of the oil net of the side suction smoke collecting hood. The deflector 23 is arranged below the strip-shaped air port 12 and above the oil net. The arc-shaped convex part 231 is arranged on the upper side of the deflector 23. The lower side surface of the deflector 23 is a horizontal plane. The included angle between the upper side surface and the lower side surface at the rear end of the deflector 23 is 20 - 40 degrees. The included angle between the upper side surface and the lower side surface at the front end of the deflector 23 is 35 - 60 degrees. The fillet diameter of the arc-shaped convex part 231 is 40 - 70 mm. The length between the front end and the rear end of the deflector 23 is 80 - 150 mm.

[0043] The principle of side-suction smoke collection: the airflow generated by the fan device 21 is blown forward through the strip air port 12 and flows through the arc-shaped protrusion 231 of the guide plate 23. The function of the guide plate 23 is to induce the airflow. Due to the Coanda effect, the airflow will stick to the surface of the arc-shaped protrusion 231 and move. In addition, due to the viscosity of the air, the outer layer of the airflow will also move with the airflow, so that the range of inducing inward swirl and shielding the outward expansion of oil smoke exceeds the range of the length between the front and rear ends of the guide plate 23, and the airflow finally swirls toward the oil smoke suction port, avoiding the excessive length between the front and rear ends of the existing flap occupying space, thereby achieving a better smoke collection effect while occupying a smaller space.

[0044] The above description only illustrates several specific embodiments of the present invention, but it cannot be regarded as the scope of protection of the present invention. Any equivalent changes or modifications or proportional enlargement or reduction made according to the design spirit of the present invention should be considered to fall within the scope of protection of the present invention.

Claims

1. A smoke collecting hood, characterized in that, It includes a hood body (1) and an air curtain generating part (2) arranged on the hood body (1). An oil fume suction port is provided on the hood body (1), and an oil net (11) is provided on the oil fume suction port. A strip-shaped air port (12) is provided at the bottom of the front end of the hood body (1). The air curtain generating part (2) includes at least one fan device (21), a gas guide box (22) and a diversion plate (23). The fan device (21) is arranged inside the hood body (1). One end of the gas guide box (22) is communicated with the fan device (21), and the other end of the gas guide box (22) is communicated with the outside through the strip-shaped air port (12). The diversion plate (23) is arranged on the bottom of the front end of the hood body (1). The smoke collecting hood is a side suction type smoke collecting hood. The strip-shaped air port (12) is arranged above the oil net of the side suction type smoke collecting hood. The diversion plate (23) is arranged below the strip-shaped air port (12) and above the oil net. An arc-shaped convex part (231) is arranged on the upper side of the diversion plate (23), and the lower side surface of the diversion plate (23) is a horizontal plane.

2. The smoke collecting hood according to claim 1, characterized in that, The upper end of the diversion plate (23) is rotatably arranged on the bottom of the front end of the hood body (1).

3. The smoke collecting hood according to claim 2, characterized in that, A driving mechanism for driving the diversion plate (23) to automatically turn up and down is further arranged inside the hood body (1), and the driving mechanism is connected with the rear side surface of the diversion plate (23).

4. A range hood, characterized in that, It includes a main machine part (3) and the smoke collecting hood according to any one of claims 1-3. The smoke collecting hood is connected with the main machine part (3). The fan channel of the main machine part (3) is communicated with the oil fume suction port of the hood body (1), and the fan device (21) is connected with the electric control device of the main machine part (3).

5. The range hood according to claim 4, characterized in that, The range hood is a side suction type range hood.

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