Smoke gathering structure and integrated cooker

Abstract

The invention provides a smoke gathering structure and an integrated cooker, and relates to the technical field of kitchen appliances, the smoke gathering structure provided by the embodiment of the invention comprises an air inlet channel and a fan assembly, and the air inlet channel comprises a front side face, a left side face, a rear side face and a right side face which are sequentially connected end to end in the circumferential direction; the fan assembly is arranged in the air inlet channel, and an air inlet of the fan assembly faces the rear side face of the air inlet channel. And the distance between the left side surface and the right side surface is gradually increased from front to back.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a smoke collecting structure and an integrated stove. Background Art

[0002] The bellows systems of existing integrated stoves generally adopt a square structure design and lack guidance for airflow. When the fan is started, the gas can be sucked into the fan inlet from the top air inlet channel. When there are right angles or small corners in the airflow path, the airflow will change and collide significantly, and vortices and turbulence are easily formed. These gas turbulences will not only cause kinetic energy loss of the airflow and reduce the overall air volume, but also make the airflow distribution uneven, thereby increasing the noise and vibration inside the bellows system and reducing the comfort of use. Summary of the invention

[0003] The object of the present invention is to provide a smoke collecting structure and an integrated stove to alleviate the technical problem of insufficient air intake of a fan assembly of an existing smoke collecting hood.

[0004] In a first aspect, an embodiment of the present invention provides a smoke collecting structure, comprising: an air inlet channel and a fan assembly, wherein the air inlet channel comprises a front side surface, a left side surface, a rear side surface and a right side surface connected in sequence along the circumferential direction;

[0005] The fan assembly is arranged in the air inlet passage, and the air inlet of the fan assembly faces the rear side of the air inlet passage;

[0006] From front to back, the distance between the left and right profiles gradually increases.

[0007] Furthermore, the fan assembly includes a volute, and a guide slope is arranged on the circumferential outer wall of the volute, and the guide slope is inclined toward the center of the volute from front to rear.

[0008] Furthermore, a noise reduction member is provided between the circumferential outer wall of the volute and the flow guide inclined surface;

[0009] Noise reduction holes are arranged on the circumferential outer wall of the volute.

[0010] Furthermore, a guide protrusion protruding forward is provided on the rear side surface, and in the front-to-back direction, the guide protrusion is aligned with the air inlet.

[0011] Furthermore, the center of the guide protrusion is coaxial with the center of the air inlet, and the outer diameter of the guide protrusion is smaller than the diameter of the air inlet.

[0012] Furthermore, the smoke-collecting structure also includes a cover plate, which is connected to the top opening of the air inlet channel, and the front edge of the cover plate has a downwardly curved arc edge, the lower edge of the arc edge is connected to the front side surface to make the cover plate and the front side surface have an arc transition.

[0013] Furthermore, the left side and the right side are symmetrically arranged relative to the fan assembly; from top to bottom, the left side includes a first side, a second side and a third side connected in sequence, and correspondingly, the right side includes a fourth side, a fifth side and a sixth side connected in sequence;

[0014] In the left-right direction, a gathering area is formed between the first surface and the fourth surface; a gathering area is formed between the second surface and the fifth surface; and a gathering area is formed between the third surface and the sixth surface;

[0015] From top to bottom, the distance between the first surface and the fourth surface, and the distance between the second surface and the fifth surface gradually decrease, and the angle between the first surface and the horizontal line is greater than the angle between the second surface and the horizontal plane.

[0016] Furthermore, from top to bottom, the distance between the third and sixth faces remains unchanged;

[0017] Alternatively, from top to bottom, the distance between the third surface and the sixth surface gradually decreases.

[0018] Furthermore, from front to back, the front end of the second surface is higher than the rear end.

[0019] In a second aspect, the present invention provides an integrated stove comprising the above-mentioned smoke collecting structure.

[0020] The smoke-collecting structure provided in an embodiment of the present invention includes: an air inlet channel and a fan assembly, the air inlet channel including a front side surface, a left side surface, a rear side surface and a right side surface which are sequentially connected end to end along the circumferential direction; the fan assembly is arranged in the air inlet channel, and the air inlet of the fan assembly faces the rear side surface of the air inlet channel; from front to back, the distance between the left side surface and the right side surface gradually increases.

[0021] After the airflow enters the air inlet channel, under the guidance of the inclined left and right sides, the airflow on both sides will quickly diffuse to the rear side of the air inlet channel. The inclined setting of the left and right sides can reduce the forward diffusion of the airflow, making the airflow diffused to the front side of the fan assembly easier to be pulled back by the fan, thereby increasing the air volume.

[0022] The integrated stove provided by the present invention includes the above-mentioned smoke-collecting structure. Since the integrated stove provided by the embodiment of the present invention adopts the above-mentioned smoke-collecting structure, the integrated stove provided by the embodiment of the present invention also has the advantages of the smoke-collecting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a smoke collecting structure provided by an embodiment of the present invention;

[0025] Figure 2 A rear view of the smoke collecting structure provided by an embodiment of the present invention;

[0026] Figure 3 An airflow direction diagram of the smoke collecting structure provided by an embodiment of the present invention in a rearward direction;

[0027] Figure 4 A top view of a smoke collecting structure provided by an embodiment of the present invention;

[0028] Figure 5 A side view of a smoke collecting structure provided by an embodiment of the present invention;

[0029] Figure 6 A diagram of the airflow direction in a top view of the smoke collecting structure provided by an embodiment of the present invention;

[0030] Figure 7 A cross-sectional view of a fan assembly of a smoke collecting structure provided by an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of a cover plate of a smoke collecting structure provided in an embodiment of the present invention;

[0032] Fig. 9 A schematic diagram of the effect of the flow-guiding convex portion on the airflow in the smoke-collecting structure provided in an embodiment of the present invention;

[0033] Fig.10 A schematic diagram of the effect of the second surface on the airflow in the smoke collecting structure provided in an embodiment of the present invention;

[0034] Fig.11 A schematic diagram of another smoke collecting area in the smoke collecting structure provided in an embodiment of the present invention.

[0035] Icons: 100 - fan assembly; 110 - volute; 120 - guide slope; 130 - noise reduction component; 140 - air guide ring;

[0036] 210 - front side; 220 - left side; 230 - rear side; 231 - flow guide convex part; 240 - right side;

[0037] 300 - V-type cavity;

[0038] 500-cover plate; 510-arc edge;

[0039] 610 - first side; 620 - second side; 630 - third side;

[0040] 710 – fourth side; 720 – fifth side; 730 – sixth side. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1 As shown, the smoke collecting structure provided by the embodiment of the present invention includes: an air inlet channel and a fan assembly 100, the air inlet channel includes a front side surface 210, a left side surface 220, a rear side surface 230 and a right side surface 240 connected in sequence along the circumferential direction. The upper end of the air inlet channel is open. The fan assembly 100 is arranged in the air inlet channel and is located in the front position. The air inlet of the fan assembly 100 faces the rear side surface 230 of the air inlet channel, and the oil smoke flows into the fan assembly 100 from top to bottom.

[0043] like Figure 4 As shown, different from the prior art, the distance between the left side 220 and the right side 240 gradually increases from front to back. The left side 220 and the right side 240 are both in an inclined state as a whole, and are in a retracted state from front to back. When the airflow enters the air inlet channel, under the guidance of the inclined left side 220 and right side 240 on the left and right sides, the airflow on both sides will quickly diffuse to the rear side of the air inlet channel. The inclined setting of the left side 220 and the right side 240 can reduce the forward diffusion of the airflow, so that the airflow diffused to the front side of the fan assembly 100 can be more easily pulled back by the fan, thereby increasing the air volume.

[0044] like Figure 1 , Figure 5 and Figure 7 As shown, the fan assembly 100 includes a volute 110 , and a guide slope 120 is arranged on the circumferential outer wall of the volute 110 . From front to back, the guide slope 120 is inclined toward the center of the volute 110 .

[0045] like Figure 5 As shown, the guide slope 120 has a tendency to guide the airflow toward the air inlet. Specifically, when the airflow passes through the corner of the guide slope 120 and the rear plate of the volute 110, its turning radius is increased, the reduction in airflow velocity is reduced, and the airflow diffused to the periphery of the fan assembly 100 can be quickly sucked into the fan, thereby increasing the air volume.

[0046] like Figure 6 As shown, the guide slope 120 of the outer ring of the fan assembly 100, together with the inward-retracted left side 220 and right side 240, respectively form two V-shaped cavities 300 which are narrow in front and wide in the back in the cross section. When the airflow flows through here, its turning radius is increased, the decrease in airflow velocity is reduced, and the air volume is increased.

[0047] like Figure 7 As shown, a noise reduction member 130 is provided between the circumferential outer wall of the volute 110 and the guide slope 120 ; and a noise reduction hole is provided on the circumferential outer wall of the volute 110 .

[0048] A noise reduction member 130 is also provided inside the guide slope 120. The cross section of the noise reduction member 130 is V-shaped. A plurality of small holes are provided on the circumferential outer wall of the volute 110 to form noise reduction holes. The energy of the airflow passing through the noise reduction holes is consumed. One side of the V-shaped noise reduction member 130 is closely attached to the inner wall of the guide slope 120, and the other side is closely attached to the outer wall of the volute 110 enclosure, playing a dual noise reduction role, thereby reducing noise.

[0049] like Fig. 9 As shown, a guide protrusion 231 protruding forward is provided on the rear side surface 230, and in the front-to-back direction, the guide protrusion 231 is aligned with the air inlet.

[0050] The airflow flowing between the rear plate and the rear side surface 230 of the volute 110 can quickly enter the air inlet under the guidance of the guide protrusion 231. Specifically, the center of the guide protrusion 231 is coaxial with the center of the air inlet, and the outer diameter of the guide protrusion 231 is smaller than the diameter of the air inlet. A guide channel pointing to the air inlet is formed on the axial cross-section of the guide protrusion 231 and the air guide ring 140 of the volute 110. The outer diameter of the guide protrusion 231 is smaller than the diameter of the air inlet, ensuring that the width of the guide channel is greater than the width formed between the rear plate and the rear side surface 230 of the volute 110, ensuring that the airflow is smoother, thereby increasing the air volume.

[0051] like Figure 5 and Figure 8 As shown, the smoke-collecting structure also includes a cover plate 500, which is connected to the top opening of the air inlet channel, and the front edge of the cover plate 500 has a downwardly curved arc edge 510, and the lower edge of the arc edge 510 is connected to the front side surface 210 to make the cover plate 500 and the front side surface 210 transition in an arc.

[0052] The cover plate 500 is connected to the upper end of the opening of the air inlet passage, and is used to receive the smoke hood. The front side of the cover plate 500 is provided with an arc edge 510 that is bent downward and has a large arc angle, and the radius of the arc angle R ≥ 10. When the airflow from above flows into the air inlet passage from top to bottom, a part of the airflow flows toward the front of the volute 110 and turns at the arc edge 510. The setting of the arc edge 510 can effectively increase the turning radius of the airflow, increase the flow rate, and reduce the generation of turbulence, which not only increases the air volume, but also reduces the noise.

[0053] like Figure 2 and Figure 3As shown, the left side 220 and the right side 240 are symmetrically arranged relative to the fan assembly 100; from top to bottom, the left side includes a first side 610, a second side 620 and a third side 630 connected in sequence, and correspondingly, the right side includes a fourth side 710, a fifth side 720 and a sixth side 730 connected in sequence; in the left and right directions, a gathering area is formed between the first side 610 and the fourth side 710; a gathering area is formed between the second side 620 and the fifth side 720; and a gathering area is formed between the third side 630 and the sixth side 730; from top to bottom, the distance between the first side 610 and the fourth side 710, and the distance between the second side 620 and the fifth side 720 gradually decrease, and the angle between the first side 610 and the horizontal line is greater than the angle between the second side 620 and the horizontal plane.

[0054] In the convergence area, the first surface 610 and the fourth surface 710 on the left and right sides gradually converge from top to bottom. When the airflow enters the upper part of the air inlet channel, the airflow slowly converges to the center of the volute 110 along the convergence slopes on the left and right sides.

[0055] like Figure 2 As shown, in the rapid gathering area, compared with the first surface 610 and the fourth surface 710, the second surface 620 and the fifth surface 720 are more inclined. Taking the second surface 620 as an example, the second surface 620 is inclined at a certain angle α to the horizontal, and the second surface 620 points to the bottom of the circular air inlet to form a tangent, so that the airflow on both sides can be quickly transported to the fan inlet, and the airflow diffused to the bottom of the air inlet channel can also slow down the downward diffusion speed of the airflow through this area, which is conducive to the fan to quickly absorb this airflow, and combined with the Reynolds number calculation formula Re=ρvL / μ to optimize the flow state of the fluid when it flows through the rapid gathering area, wherein v, ρ, and μ are the flow velocity, density and viscosity coefficient of the fluid, respectively, and L is the length of the rapid gathering area (left and right direction), and the calculated Reynolds number is controlled to be lower than the critical Reynolds number. In summary, the optimal length of the rapid gathering area is 20mm≤L≤80mm, and the horizontal inclination angle is 5°≤α≤50°, so that the fluid is in a laminar state when flowing through the rapid gathering area, thereby improving the fluid stability, increasing the air volume and reducing the noise.

[0056] The third section is the retraction area. In this embodiment, the distance between the third surface 630 and the sixth surface 730 from top to bottom is constant. The left-right length dimension is smaller than the dimension of the retraction area and larger than the diameter of the fan air inlet. By compressing the cavity area below the volute 110, the turbulent area is reduced, the interference to the airflow is reduced, the air volume is stabilized, and the noise generation is reduced.

[0057] In another possible implementation, Fig.11As shown, the distance between the third surface 630 and the sixth surface 730 gradually decreases from top to bottom. Taking the third surface 630 as an example, the single-side inclination angle is 5°≤β≤35°, which further compresses the cavity area below the volute 110, reduces the turbulent area, increases the airflow turning radius between the left side 220 and the bottom, reduces the air volume loss, and accelerates the airflow to be absorbed by the fan.

[0058] Further, such as Fig.10 As shown, from front to back, the front end of the second surface 620 is higher than the rear end, so that the airflow passing through the second surface 620 and the fifth surface 720 can turn more easily, thereby reducing the air volume loss, and the airflow escaping to the front side from both sides of the channel can be more easily sucked back by the fan.

[0059] The integrated stove provided by the present invention includes the above-mentioned smoke-collecting structure. Since the integrated stove provided by the embodiment of the present invention adopts the above-mentioned smoke-collecting structure, the integrated stove provided by the embodiment of the present invention also has the advantages of the smoke-collecting structure.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smoke-collecting structure, characterized in that: include: An air inlet channel and a fan assembly (100), wherein the air inlet channel comprises a front side surface (210), a left side surface (220), a rear side surface (230) and a right side surface (240) which are sequentially connected end to end along a circumferential direction; The fan assembly (100) is arranged in the air inlet channel, and the air inlet of the fan assembly (100) faces the rear side (230) of the air inlet channel; From front to back, the distance between the left side surface (220) and the right side surface (240) gradually increases.

2. The smoke-binding structure according to claim 1, characterized in that: The fan assembly (100) comprises a volute (110), and a flow guide slope (120) is arranged on the circumferential outer wall of the volute (110), and from front to rear, the flow guide slope (120) is inclined toward the center of the volute (110).

3. The smoke-binding structure according to claim 2, characterized in that: A noise reduction member (130) is provided between the circumferential outer wall of the volute (110) and the flow guide slope (120); Noise reduction holes are provided on the circumferential outer wall of the volute (110).

4. The smoke-binding structure according to claim 1, characterized in that: The rear side surface (230) is provided with a flow-guiding protrusion (231) protruding forward, and in the front-to-back direction, the flow-guiding protrusion (231) is aligned with the air inlet.

5. The smoke-binding structure according to claim 4, characterized in that: The center of the flow-guiding protrusion (231) is coaxial with the center of the air inlet, and the outer diameter of the flow-guiding protrusion (231) is smaller than the diameter of the air inlet.

6. The smoke-binding structure according to claim 1, characterized in that: The smoke-collecting structure further comprises a cover plate (500), wherein the cover plate (500) is connected to the top opening of the air inlet passage, and the front edge of the cover plate (500) has a downwardly curved arc edge (510), and the lower edge of the arc edge (510) is connected to the front side surface (210) so that the cover plate (500) and the front side surface (210) have an arc transition.

7. The smoke-binding structure according to claim 1, characterized in that: The left side surface (220) and the right side surface (240) are symmetrically arranged relative to the fan assembly (100); from top to bottom, the left side surface (220) includes a first surface (610), a second surface (620), and a third surface (630) connected in sequence, and correspondingly, the right side surface (240) includes a fourth surface (710), a fifth surface (720), and a sixth surface (730) connected in sequence; In the left-right direction, a gathering area is formed between the first surface (610) and the fourth surface (710); a gathering area is formed between the second surface (620) and the fifth surface (720); and a gathering area is formed between the third surface (630) and the sixth surface (730); From top to bottom, the distance between the first surface (610) and the fourth surface (710), and the distance between the second surface (620) and the fifth surface (720) gradually decrease, and the angle between the first surface (610) and the horizontal line is greater than the angle between the second surface (620) and the horizontal plane.

8. The smoke-binding structure according to claim 7, characterized in that: From top to bottom, the distance between the third surface (630) and the sixth surface (730) remains unchanged; Alternatively, from top to bottom, the distance between the third surface (630) and the sixth surface (730) gradually decreases.

9. The smoke-binding structure according to claim 7, characterized in that: From front to back, the front end of the second surface (620) is higher than the rear end.

10. An integrated stove, characterized in that: It comprises the smoke-collecting structure as described in any one of claims 1 to 9.

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