Range hood

Abstract

The present invention discloses a range hood, comprising: a smoke collecting hood, the smoke collecting hood is provided with a smoke collecting cavity; a smoke guide, the smoke guide is provided in the smoke collecting cavity, the outer edge of the smoke guide and the wall of the smoke collecting hood define a first smoke guiding channel; a smoke partition plate, the smoke partition plate is provided in the central area of ​​the smoke collecting cavity and at least protrudes from the inner end lower surface of the smoke guide, and a second smoke guiding channel is formed on the smoke partition plate; a collecting cavity, the collecting cavity is jointly provided by the smoke guide, the smoke partition plate and the top of the smoke collecting hood, and the outlets of the first smoke guiding channel and the second smoke guiding channel are respectively connected to the collecting cavity. The range hood according to the embodiment of the present invention has less smoke leakage, high smoke exhaust efficiency and low airflow noise.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to a range hood. Background Art

[0002] For a top-suction range hood, a smoke guide plate is provided at the air inlet of the smoke collecting chamber, so that the negative pressure zone of the range hood is shifted from the center to the surroundings, thereby expanding the area of ​​the negative pressure zone and reducing the escape of oil smoke. However, the smoke exhaust efficiency of the above range hood is low, and the oil smoke on the left and right sides easily interfere with each other. Summary of the invention

[0003] The invention provides a range hood having high smoke exhaust efficiency and little oil smoke escape.

[0004] The range hood according to the embodiment of the present invention comprises: a smoke collecting hood, which is provided with a smoke collecting chamber; a smoke guide member, which is arranged in the smoke collecting chamber, and the outer edge of the smoke guide member and the wall of the smoke collecting hood define a first smoke guiding channel; a smoke isolation plate, which is arranged in the central area of ​​the smoke collecting chamber and at least partially protrudes from the lower surface of the inner end of the smoke guide member, and a second smoke guiding channel is formed on the smoke isolation plate; and a collecting chamber, which is jointly provided with the smoke guide member, the smoke isolation plate and the top of the smoke collecting hood, and the outlets of the first smoke guiding channel and the second smoke guiding channel are respectively connected to the collecting chamber.

[0005] According to the range hood of the embodiment of the present invention, smoke guiding channels are arranged around and in the central area of ​​the smoke collecting chamber. In this way, it can be ensured that the smoke in the central area of ​​the smoke collecting chamber flows upward, and the interference of the smoke guiding member on the flow of smoke in the central area can be reduced. The smoke on the left and right sides of the smoke collecting chamber can enter the collecting chamber under the action of the smoke guiding member. Therefore, the smoke can quickly enter the collecting chamber from various areas of the smoke collecting chamber, thereby improving the smoke exhaust efficiency. Moreover, under the action of the smoke partition plate, the problem of collision and escape of the smoke on the left and right sides can be avoided.

[0006] In some embodiments, the smoke guide member includes a first smoke guide plate and a second smoke guide plate respectively located on both sides of a smoke isolation plate, and the first smoke guide plate and the second smoke guide plate are connected via the smoke isolation plate.

[0007] In some embodiments, the smoke isolation plate and the first smoke guide plate are spaced apart from each other, and the smoke isolation plate and the second smoke guide plate are spaced apart from each other, so that smoke inlet regulating channels are formed on both sides of the smoke isolation plate respectively.

[0008] In some embodiments, the smoke isolation plate or the smoke guide member moves up and down to adjust the size of the smoke inlet regulating flow channel.

[0009] In some embodiments, the smoke collecting hood is provided with a first oil filter and a second oil filter. The first oil filter is disposed opposite to the first smoke guide plate in vertical arrangement, and the second oil filter is disposed opposite to the second smoke guide plate in vertical arrangement.

[0010] In some embodiments, an oil filter is provided at a position of the smoke collecting hood corresponding to the second smoke guiding channel, and the smoke partition plate is provided with an oil storage tank, and the oil storage tank and the oil filter are arranged opposite to each other in upper and lower directions.

[0011] In some embodiments, the longitudinal cross-section of the oil storage tank is U-shaped or V-shaped.

[0012] In some embodiments, the second smoke guiding channel is formed on the left side and the right side of the oil storage tank.

[0013] In some embodiments, one end of the smoke isolation plate is connected to the inner end of the smoke guide member, and the other end of the smoke isolation plate extends downward, and the lower end of the smoke isolation plate is lower than the outer end of the smoke guide member.

[0014] In some embodiments, the upper end of the smoke isolation plate is flush with the inner end upper surface of the smoke guide member.

[0015] In some embodiments, the bottom surface of the smoke isolation plate is a curved surface.

[0016] In some embodiments, the amount of smoke entering the second smoke guiding channel per unit time is less than the amount of smoke entering the first smoke guiding channel per unit time.

[0017] In some embodiments, the first smoke guide plate and the second smoke guide plate are arranged to be inclined downward from the inside to the outside and are symmetrically arranged relative to the smoke isolation plate.

[0018] Additional aspects and advantages of the embodiments of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a three-dimensional diagram of a range hood according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A cross-sectional view in one direction;

[0022] Figure 3 yes Figure 1 A cross-sectional view from another direction;

[0023] Figure 4 yes Figure 1 A cross-sectional view from another direction;

[0024] Figure 5 yes Figure 1 A top view of

[0025] Figure 6 yes Figure 1 3D exploded view of some components;

[0026] Figure 7 yes Figure 1 3D assembly drawing of some components;

[0027] Figure 8 is a partial cross-sectional view of a range hood according to some embodiments of the present invention;

[0028] Fig. 9 are partial cross-sectional views of range hoods according to other embodiments of the present invention;

[0029] Fig.10 yes Fig. 9 Enlarged view of point A in the middle.

[0030] Description of main component symbols:

[0031] 100: Range hood;

[0032] 10: housing; 11: flue gas channel; 12: oil filter;

[0033] 20: smoke collecting hood; 21: smoke collecting chamber; collecting chamber 211; smoke guiding chamber 212;

[0034] 30: fan; 31: volute; 32: motor; wind wheel 33;

[0035] 40: smoke guide; 41: first smoke guide plate; 42: second smoke guide plate; 43: first turning stop plate; 44: second turning stop plate;

[0036] 50: smoke barrier; 51: oil storage tank; 52: first guide plate; 53: second guide plate;

[0037] 61: first oil filter; 62: second oil filter;

[0038] 71: first smoke guide channel; 72: second smoke guide channel; 73: smoke inlet adjustment channel; 74: smoke through hole;

[0039] 90: oil cup;

[0040] 200: Cooking utensils. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are based on the directions or positional relationships shown in the drawings.

[0043] It should be noted that, unless otherwise clearly specified or limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection.

[0044] In order to expand the negative pressure area and prevent the fumes from escaping from the periphery of the cooking utensils on the left and right sides, the ceiling-type range hood is often equipped with a smoke guide plate at the air inlet of the smoke collecting chamber, so that the negative pressure area of ​​the range hood is transferred from the center to the surrounding area.

[0045] The inventor discovered during research that, although the problem of peripheral oil fume escape can be solved to a certain extent by setting a smoke guide plate, the oil fume can only flow out from the smoke guide channels on all sides due to the obstruction of the smoke guide plate under the smoke hood. The overall oil fume outlet path becomes longer, and the residence time under the smoke guide plate also becomes longer. The suction force of the fan will also be lost, thereby reducing the emission efficiency of the oil fume. Moreover, when two cooking utensils are used at the same time, the flow directions of the oil fume on the left and right sides are inconsistent, resulting in large interference with the oil fume flow, a long oil fume flow path, a long residence time, and it is easy for the oil fume in the center area to collide with each other and cause oil fume escape problems.

[0046] Therefore, the present application focuses on solving the problems of smoke leakage and low exhaust efficiency of range hoods.

[0047] See also Figure 1-Figure 10 , a range hood 100 according to an embodiment of the present invention is described. The range hood 100 is a top suction range hood 100.

[0048] like Figure 1 Combination Figure 2-Figure 4As shown, the range hood 100 according to the embodiment of the present invention may generally include: a housing 10, a fan 30 and a smoke collecting hood 20. The fan 30 may include a volute 31, a wind wheel 33 and a motor 32. The wind wheel 33 is accommodated in the volute 31, and the motor 32 is located in the wind wheel 33 and connected to the wind wheel 33 for driving the wind wheel 33 to rotate. The rotation axis of the wind wheel 33 may be horizontally oriented. In other words, the wind wheel 33 and the motor 32 are arranged horizontally. A volute air inlet and a volute air outlet are formed on the volute 31. The volute air inlet may be formed on the front surface of the volute 31, but is not limited thereto.

[0049] The fan 30 is arranged in the housing 10. The housing 10 can be formed into a hollow rectangular parallelepiped. The smoke hood 20 can be arranged at the bottom of the housing 10. The fan 30 is stored in the housing 10 as a whole. That is, the fan 30 is hidden in the housing 10, thereby improving the appearance of the range hood 100. At the same time, the housing 10 can also protect the fan 30 and reduce noise. The housing 10 has a smoke passage 11 connected to the volute air inlet. Figure 4 In the example, the smoke channel 11 is a channel between the front surface of the fan 30 and the front wall of the casing 10.

[0050] like Figure 1-Figure 4 As shown, the smoke collecting hood 20 at least includes a front wall, a left wall, a right wall and a rear wall, which together form a smoke collecting chamber 21, and a smoke guiding member 40 for guiding smoke is provided in the smoke collecting chamber 21. Figure 1 In the middle and upper directions), the smoke guide member 40 divides the smoke collecting chamber 21 into two upper and lower parts, one of which is a collecting chamber 212 located above the smoke guide member 40, and the other is a smoke guide chamber 211 located below the smoke guide member 40. The smoke guide chamber 211 is directly connected to the smoke source below, and the collecting chamber 212 is connected to the smoke channel 11 above.

[0051] The outer edge of the smoke guide 40 and the wall surface of the smoke hood 20 define a first smoke guide channel 71, wherein the outer edge of the smoke guide 40 may include front and rear outer edges and left and right outer edges, therefore, the first smoke guide channel 71 may be formed on the front side, rear side, left side and right side of the smoke collecting chamber 21, that is, the smoke guide 40 and the front wall surface of the smoke collecting chamber 20 may form the first smoke guide channel 71 located at the front side, the smoke guide 40 and the rear wall surface of the smoke collecting chamber 20 may form the first smoke guide channel 71 located at the rear side, the smoke guide 40 and the left wall surface of the smoke collecting chamber 20 may form the first smoke guide channel 71 located at the left side, and the smoke guide 40 and the right wall surface of the smoke collecting chamber 20 may form the first smoke guide channel 71 located at the right side. That is, the negative pressure area of ​​the smoke collecting chamber 21 is turned to the surroundings by the smoke guide 40, and the oil smoke may flow to the first smoke guide channel 71 along the surface wall of the smoke guide 40.

[0052] Since the smoke guide member 40 is located in the rising channel of the oil smoke, the smoke guide member 40 will at least to a certain extent hinder the oil smoke from being discharged outward from the central area of ​​the smoke collecting chamber 21. Therefore, under the guidance of the smoke guide member 40 and the negative pressure of the fan 30, the oil smoke can flow along the outer edge of the smoke guide member 40, flow upward through the first smoke guide channel 71 and be introduced into the collecting chamber 212, and then be sucked into the volute 31 by the fan 30, and finally be discharged to the outside.

[0053] In order to prevent the oil smoke in the left and right smoke guide chambers 211 from flowing in parallel and interfering with each other, thereby causing smoke leakage and prolonging the oil smoke emission time, a smoke isolation plate 50 for blocking the left and right flow of oil smoke is further provided in the smoke collecting chamber 21 .

[0054] like Figure 1-Figure 3 As shown, the smoke-isolating plate 50 is disposed in the central area of ​​the smoke collecting chamber 21, and the lower end of the smoke-isolating plate 50 is lower than the lower surface of the inner end of the smoke-guiding member 40, thereby dividing the smoke-guiding chamber 211 below the smoke-guiding member 40 into a left smoke-guiding chamber 211 and a right smoke-guiding chamber 211, thereby ensuring the smoke-isolating effect. The smoke-isolating plate 50 blocks the oil smoke on the left side of the smoke collecting chamber 21 from flowing to the right side to a certain extent, and at the same time, it can also block the oil smoke on the right side of the smoke collecting chamber 21 from flowing to the left side.

[0055] In order to reduce the oil smoke flow resistance in the central area of ​​the smoke collecting chamber 21, a second smoke guiding channel 72 is further provided on the smoke isolation member 50. The second smoke guiding channel 72 is arranged close to the central area of ​​the smoke collecting chamber 21.

[0056] In other words, the emission path of the oil smoke is not limited to the surroundings of the smoke collecting chamber 21, and the oil smoke can also flow upward from the central area of ​​the smoke collecting chamber 21 into the collecting chamber 212. Although a smoke guide 40 is provided below the smoke collecting hood 20, due to the presence of the second smoke guide channel 72, the smoke resistance of the oil smoke in the middle of the smoke collecting chamber 21 is reduced. During the rising process of the oil smoke, a part of the oil smoke can directly flow along the surface of the smoke guide 40 through the first smoke guide channel 71 into the collecting chamber 212, and the other part can enter the collecting chamber 212 through the first smoke guide channel 71.

[0057] That is, the left side of the oil smoke flows to the collection chamber 212 through the first smoke guide channel 71 and the second smoke guide channel 72 on the left side, and the right side of the oil smoke can flow to the collection chamber 212 through the first smoke guide channel 71 and the second smoke guide channel 72 on the right side. In other words, the oil smoke on the left and right sides flows in separate ways under the action of the smoke partition plate 50 before entering the collection chamber 212, and can both flow out through the second smoke guide channel 72, thereby effectively avoiding the problems of oil smoke cross-flow on the left and right sides, oil smoke retention in the central area, and slow flow. By setting smoke guide channels in the center and around the smoke collection chamber 21, the oil smoke flows more smoothly and is not easy to interfere with each other, which improves the overall smoke exhaust efficiency and reduces the air flow noise.

[0058] In addition, since the collecting chamber 212 is connected to the first smoke guide channel 71 and the second smoke guide channel 72 at the same time, it is a channel shared by all the oil smoke. Therefore, part of the oil smoke on the left side can flow to the right through the collecting chamber 212, part of the oil smoke on the right side can flow to the left through the collecting chamber 212, and part of the oil smoke in the central area can also flow to the left and right at the same time. That is, when only one side of the cooking utensil 200 is working, the oil smoke can also flow out from the entire air outlet of the smoke collecting chamber 21, thereby accelerating the emission efficiency of the oil smoke. That is, although the smoke partition plate 50 diverts the oil smoke in the smoke guide chamber 211, the oil smoke is gathered in the collecting chamber 212, which is conducive to the rapid emission of the oil smoke.

[0059] Moreover, when the oil smoke enters the collecting chamber 212 with a larger space from the first smoke guiding channel 71 and the second smoke guiding channel 72, the flow velocity of the oil smoke will be reduced and smoother, thereby greatly reducing the air flow noise.

[0060] The working process of the range hood 100 is roughly as follows: the motor 32 drives the wind wheel 33 to rotate so that a negative pressure area is formed in the volute 31, and the oil smoke on the stove top continues to rise and enters the smoke guide chamber 211, and then passes through the first smoke guide channel 71 and the second smoke guide channel 72 to be introduced into the collection chamber 212, and then passes through the smoke channel 11 and the volute 31. Under the obstruction of the smoke partition plate 50, the oil smoke on the left and right sides does not flow through, and the oil smoke is separated under the action of centrifugal force, wherein the smoke is discharged from the volute air outlet of the casing 10, and the oil drips and is collected in the oil cup 90.

[0061] In short, according to the range hood 100 of the embodiment of the present invention, smoke guiding channels are arranged around and in the central area of ​​the smoke collecting chamber 21. In this way, a portion of the oil smoke can flow upward from the central area of ​​the smoke collecting chamber 21, reducing the obstruction and interference of the smoke guide member 40 on the flow of oil smoke in the central area. The oil smoke on the left and right sides of the smoke collecting chamber 21 can also enter the collecting chamber 211 under the action of the smoke guide member 40. Therefore, the oil smoke can quickly enter the collecting chamber 211 from various areas of the smoke collecting chamber 21, thereby improving the smoke exhaust efficiency. Moreover, under the action of the smoke partition plate 50, the problem of oil smoke on the left and right sides colliding and interfering with each other and being retained and escaping can be avoided.

[0062] In some embodiments of the present invention, the smoke guide member includes a first smoke guide plate 41 and a second smoke guide plate 42. In order to reduce the oil smoke resistance in the central area of ​​the smoke collecting chamber 21, a smoke partition plate 50 is provided in the central area of ​​the smoke collecting chamber 21 to block the oil smoke cross-flow on the left and right sides. In order to ensure that the oil smoke on both sides can flow upward smoothly and efficiently, the first smoke guide plate 41 and the second smoke guide plate 42 are both provided with a second smoke guide channel 72 near the central area of ​​the smoke collecting chamber 21.

[0063] In the optional example, Figure 1 Combination Figure 7 and Figure 8As shown, the smoke isolation plate 50 is located between the first smoke guide plate 41 and the second smoke guide plate 42. The left edge of the smoke isolation plate 50 is connected to the inner end edge of the first smoke guide plate 41, and the right edge of the smoke isolation plate 50 is connected to the inner end edge of the second smoke guide plate 42, and the smoke isolation plate 50 is arranged in the middle.

[0064] That is, the first smoke guide plate 41 and the second smoke guide plate 42 are connected to form a whole by relying on the smoke isolation plate 50, and can move upward or downward synchronously as a whole. For example, the first smoke guide plate 41 and the second smoke guide plate 42 are respectively suspended on the top wall of the smoke hood 20, and the smoke isolation plate 50 is not connected to the smoke hood 20, so that the smoke isolation plate 50 can be supported by the first smoke guide plate 41 and the second smoke guide plate 42.

[0065] Of course, the smoke partition plate 50 can also be connected to the top wall of the smoke hood 20, and the first smoke guide plate 41 and the second smoke guide plate 42 are supported by the smoke partition plate 50. Preferably, the smoke partition plate 50 and the first smoke guide plate 41 as well as the smoke partition plate 50 and the second smoke guide plate 42 are detachably connected by means of snap-fit ​​or screws, thereby facilitating the cleaning of the components of the range hood 100.

[0066] In this example, the positions of the smoke guide 40 and the smoke barrier plate 50 relative to the cooking appliance 200 can be changed by synchronously moving upward or downward according to different cooking modes, thereby obtaining a better smoke exhaust effect.

[0067] For example, in the stir-fry cooking mode, the smoke guide 40 and the smoke isolation plate 50 can be moved downward as a whole, so as to quickly gather the oil smoke in the collection chamber 212. For another example, in the steaming cooking mode, the positions of the smoke guide 40 and the smoke isolation plate 50 can be moved upward as a whole, so as to increase the cooking space. That is, when there is less oil smoke, the positions of the smoke guide 40 and the smoke isolation plate 50 can be slightly farther from the cooking utensils, and when there is more oil smoke, the positions of the smoke guide 40 and the smoke isolation plate 50 can be slightly closer to the cooking utensils.

[0068] In other embodiments of the present invention, the first smoke guide plate 41, the second smoke guide plate 42 and the smoke isolation plate 50 are respectively connected to the top wall of the smoke collecting chamber 21, the first smoke guide plate 41 and the smoke isolation plate 50 are separately arranged to form a smoke inlet regulating flow channel 73, and the second smoke guide plate 42 and the smoke isolation plate 50 are separately arranged to form a smoke inlet regulating flow channel 73. That is, the smoke guide 40 and the smoke isolation plate 50 are independent of each other, so that a part of the oil smoke can also flow upward from the smoke inlet regulating flow channel 73, thereby increasing the smoke intake in the central area of ​​the smoke collecting chamber 21.

[0069] Furthermore, in order to adjust the smoke exhaust volume in the central area of ​​the smoke collecting device 21, the horizontal flow cross section of the smoke inlet regulating flow channel 73 can be adjusted as the smoke partition plate 50 or the smoke guide 40 moves up and down. That is, as the smoke partition plate 50 moves up and down, the horizontal flow cross section of the smoke inlet regulating flow channel 73 on both sides can be changed at the same time, the horizontal flow cross section of the smoke inlet regulating flow channel 73 on the left side can be changed by moving the first smoke guide plate 41 up and down, and the horizontal flow cross section of the smoke inlet regulating flow channel 73 on the left side can be changed by moving the second smoke guide plate 41 up and down.

[0070] For example, Fig. 9 and Fig.10 As shown, the smoke-isolating plate 50 has a first guide plate 52 arranged opposite to the inner side of the first smoke-guiding plate 41 and a second guide plate 53 arranged opposite to the inner side of the second smoke-guiding plate 42. The first guide plate 52 and the second guide plate 53 extend obliquely from the inside to the outside. In this way, when one of the first smoke-guiding plate 41, the second smoke-guiding plate 42 and the smoke-isolating plate 50 moves upward, the horizontal flow cross-section of the smoke-inlet regulating flow channel 73 will increase. When one of the first smoke-guiding plate 41, the second smoke-guiding plate 42 and the smoke-isolating plate 50 moves downward, the horizontal flow cross-section of the smoke-inlet regulating flow channel 73 will decrease, thereby changing the smoke intake of the smoke-inlet regulating flow channel 73, and then adjusting the ratio of the smoke intake of the central area and the periphery of the smoke-collecting chamber 21, ensuring the smooth flow of oil smoke and improving the smoke exhaust effect. It can be understood that the above is only schematic and is not a limitation on the way of adjusting the smoke intake of the smoke-inlet regulating flow channel 73. The positions of the first smoke guide plate 41, the second smoke guide plate 42 and the smoke isolation plate 50 can be adjusted synchronously or individually according to actual cooking conditions.

[0071] It should be noted that in this application, "inside" or "outside" is relative to the center line of the smoke collecting chamber 21, the side adjacent to the center line of the smoke collecting chamber 21 is the inside, and the side away from the center line of the smoke collecting chamber 21 is the outside. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0072] Considering that the negative pressure in the center of the smoke collecting chamber 21 is greater and the distance for the oil smoke to enter the second smoke guide channel 72 is shorter, in order to further balance the smoke intake in the center and the periphery of the smoke collecting chamber 21, it is preferred that the smoke intake per unit time of the second smoke guide channel 72 is set to be smaller than the smoke intake per unit time of the first smoke guide channel 71.

[0073] Since the first smoke guide plate 41 and the second smoke guide plate 42 are provided below the smoke collecting chamber 21, when the range hood 100 is in operation, the oil smoke generated by the cooking utensil 200 located at the lower left of the range hood 100 can flow toward the first smoke guide plate 41, a portion of the oil smoke on the left side flows along the wall of the first smoke guide plate 41 and enters the collecting chamber 211 through the first smoke guide channel 71, and another portion of the oil smoke on the left side flows toward the central area of ​​the smoke collecting chamber 21 and enters the collecting chamber 211 through the second smoke guide channel 72. The oil smoke generated by the cooking utensil 200 located at the lower right of the range hood 100 flows toward the second smoke guide plate 42, a portion of the oil smoke on the right side flows along the wall of the second smoke guide plate 42 and enters the collecting chamber 211 through the first smoke guide channel 71, and another portion of the oil smoke on the right side flows toward the central area of ​​the smoke collecting chamber 21 and enters the collecting chamber 211 through the second smoke guide channel 72.

[0074] Under the interference of the smoke-isolating plate 50, the left side oil smoke rarely flows to the right side, and the right side oil smoke rarely flows to the left side, thereby preventing the left and right side oil smoke from colliding and escaping in the central area of ​​the smoke collecting chamber 21. Among them, "left" and "right" in this application are based on the directions shown in the drawings, not the orientation or position relationship, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0075] Furthermore, in order to ensure the effective separation of oil smoke, an oil filter is provided on the oil smoke flow path. Figure 2 and Figure 3 As shown, the oil filter is located at the downstream side of the collection chamber 211, so that a part of the oil smoke can be condensed and filtered before entering the volute 31. After the oil smoke enters the volute 31, the grease is separated again under the action of centrifugal force. The oil filter is formed with a smoke through hole 74. After the oil smoke contacts the oil filter, it is condensed to form liquid grease, and the liquid grease can enter the oil cup 90. Among them, the oil filter can be made of a material with a high heat transfer coefficient, such as steel. In this way, the condensation effect can be further improved and the oil smoke can be effectively separated.

[0076] Further optionally, the flow cross-section of the oil filter is roughly equal to that of the air outlet of the smoke collecting chamber 21, that is, all the oil smoke share one oil filter. In this way, the arrangement of the oil filter is simple. However, in actual use, the dirtiness speed of the two sides of the oil filter is different. For example, people are used to cooking on one stove and steaming on another stove. In this case, the oil filter corresponding to the side of the cooking stove gets dirty faster, but because the oil filter is not separated, the entire oil filter needs to be cleaned when cleaning.

[0077] Further optionally, the smoke collecting hood 20 is provided with a first oil filter 61 and a second oil filter 62. That is, the air outlet of the smoke collecting chamber 21 is provided with two oil filters, each of which is mainly used to filter the oil smoke on one side. In this way, targeted cleaning can be performed according to the degree of dirtiness. For example, when removing oil by high-temperature steam, the steam can be introduced into the oil filter on the side with the most severe dirtiness, saving water and reducing cleaning time.

[0078] like Figure 1-Figure 3 As shown, a first oil filter 61 is provided above the first smoke guide plate 41 , and a second oil filter 62 is provided above the second smoke guide plate 42 .

[0079] Preferably, the first smoke guide plate 41 and the second smoke guide plate 42 are symmetrically arranged relative to the smoke isolation plate 50. That is, the first smoke guide plate 41 and the second smoke guide plate 42 have the same shape and size, so that the influence of the difference in shape and structure of the first smoke guide plate 41 and the second smoke guide plate 42 on the flow of oil smoke is reduced, and the stability of the flow of oil smoke of the range hood 100 is improved.

[0080] Preferably, one end of the smoke isolation plate 50 is connected to the inner end of the smoke guide member 40, such as Figure 2 As shown, one side of the upper end of the smoke isolation plate 50 is connected to the first smoke guide plate 41, the other side of the upper end of the smoke isolation plate 50 is connected to the second smoke guide plate 42, and the other end of the smoke isolation plate 50 extends downward. In order to improve the barrier effect of the smoke isolation plate 50, preferably, the lower end of the smoke isolation plate 50 is lower than the outer end of the smoke guide 40. In this way, the oil smoke entering the smoke collecting chamber 21 can be gathered at both sides under the barrier of the smoke isolation plate 50, and transported to the collecting chamber 211 from the first smoke guide channel 71 and the second smoke guide channel 72 at different positions, so as to avoid mutual interference and cross-flow of the oil smoke on both sides.

[0081] When the air inlet of the volute 31 is horizontally opened toward the front, in order to facilitate the introduction of oil smoke into the front, the first smoke guide plate 41 and the second smoke guide plate 42 are tilted downward from the front to the back. In this way, after the oil smoke enters the collection chamber 211, it can flow from the rear end to the front end and be better transported to the volute 31 of the fan 30.

[0082] In a further optional example, the rear sides of the first smoke guide plate 41 and the second smoke guide plate 42 are respectively provided with a first turning stop plate 43 facing forward and upward. The first turning stop plate 43 can prevent liquid grease formed on the first smoke guide plate 41 or the second smoke guide plate 42 from dripping around the cooking utensil 200, thereby ensuring the cleanliness and hygiene around the cooking utensil 200. The first turning stop plate 43 can also guide the rear side oil smoke forward and upward.

[0083] In a further optional example, the first smoke guide plate 41 and the second smoke guide plate 42 are inclined downward from the inside to the outside. That is, the first smoke guide plate 41 and the second smoke guide plate 42 form a trend of being high inside and low outside, and high in the front and low in the back. As a result, the oil smoke can adhere to the outer surface of the first smoke guide plate 41 and the second smoke guide plate 42 and flow downward from the inner end to the outer end. After entering the collection chamber 211, it flows upward from the outer end to the inner end and from the rear end to the front end, and passes through the oil filter and enters the volute 31.

[0084] In a further optional example, the outer ends of the first smoke guide plate 41 and the second smoke guide plate 42 are respectively provided with second turning stopper plates 44 facing inward and upward. The second turning stopper plates 44 can prevent liquid grease formed on the first smoke guide plate 41 or the second smoke guide plate 42 from dripping around the cooking utensil 200, thereby ensuring the cleanliness and hygiene around the cooking utensil 200. The second turning stopper plates 44 can also guide the outer end oil smoke inward and upward, thereby ensuring the smooth flow of oil smoke.

[0085] In addition, the first smoke guide plate 41 and the second smoke guide plate 42 may be straight plates or curved plates. Preferably, the first smoke guide plate 41 and the second smoke guide plate 42 are curved plates that bend downward, thereby better guiding the oil smoke to the first smoke guide channel 71.

[0086] In further optional examples, such as Figure 2 and Figure 7 As shown, the smoke hood 20 is provided with an oil filter screen 12 at a position corresponding to the second smoke guide channel 72, and a smoke through hole 74 is formed on the oil filter screen 12, so that the smoke flowing out of the second smoke guide channel 72 will condense into liquid grease after encountering the oil filter screen 12, and most of the liquid grease can flow into the oil cup 90. By setting the first oil filter net 61 above the first smoke guide plate 41, setting the second oil filter net 62 above the second smoke guide plate 42, and setting the oil filter screen 12 on the flow path of the second smoke guide channel 72, it is ensured that the smoke is effectively filtered, reducing the amount of grease entering the volute 31, and improving the smoothness of the air duct of the volute 31 and other areas. In order to prevent oil from dripping in the central area of ​​the smoke collecting chamber 21, the smoke partition plate 50 is configured with an oil storage tank 51, and the oil storage tank 51 is arranged relative to the oil filter screen 12 up and down.

[0087] Further optionally, the longitudinal direction (eg Figure 3 The cross section (in the middle and upper and lower directions) is U-shaped, V-shaped or arc-shaped. Figure 6 Combination Figure 1-Figure 3 As shown, the opening of the oil storage tank 51 faces upward, and the oil dripping from the oil filter 12 can enter the oil storage tank 51, thereby preventing the oil dripping from leaking into the cooking utensil 200, improving the user experience. It can be understood that the cross-section of the oil storage tank 51 is not limited to the above, and the cross-section of the oil storage tank 51 can also be other shapes, which are not listed here one by one.

[0088] In a further optional example, the second smoke guide channel 72 is formed on the wall surface of the oil storage tank 51. Specifically, the left side of the oil storage tank 51 facing the first smoke guide plate 41 and the right side of the oil storage tank 51 facing the second smoke guide plate 42 are both provided with the second smoke guide channel 72, so that the oil smoke in the left central area can flow upward from the second smoke guide channel 72 on the left side, and the oil smoke in the right central area can flow upward from the second smoke guide channel 72 on the right side. Driven by the fan 30, the oil smoke first enters the oil storage tank 51, then rises into the collection chamber 211, passes through the oil filter 12 with the smoke through hole 74, enters the volute 31, and is finally discharged from the volute air outlet. That is, the second smoke guide channel 72, the oil storage tank 51, the collection chamber 211 and the smoke through hole 74 of the oil filter 12 constitute the oil smoke flow path in the central area.

[0089] In order to reduce the flow resistance of the oil smoke, the bottom surface of the lower end of the smoke isolation plate 50 forms an arc-shaped surface, so that the oil smoke can flow smoothly on the arc-shaped circular surface, avoiding the oil smoke from encountering angular surfaces during the flow and causing fluctuations, thereby generating large flow noise.

[0090] Furthermore, the upper end of the smoke isolation plate 50 does not protrude from the upper surface of the inner end of the smoke guide 40. In this way, the oil smoke can flow more smoothly after entering the collection chamber 211, and the flow noise can be further reduced.

[0091] In a specific embodiment of the present invention, Figure 1-Figure 5 As shown, the range hood 100 includes a housing 10 and a smoke collecting hood 20 disposed at the bottom of the housing 10. A fan 30 is disposed in the housing 10. The smoke collecting hood 20 defines a smoke collecting chamber 21. The smoke collecting chamber 21 is provided with a first smoke guide plate 41, a smoke partition plate 50, and a second smoke guide plate 42 in sequence from left to right in the horizontal direction. A first smoke guide channel 71 is constructed by the outer edges of the first smoke guide plate 41 and the second smoke guide plate 42 and the wall surface of the smoke collecting hood 20. The first smoke guide channel 71 is formed on the left side, right side, front side, and rear side of the smoke collecting chamber 21, respectively.

[0092] In the vertical direction, the lower end of the smoke-isolating plate 50 is lower than the outer ends of the first smoke-guiding plate 41 and the second smoke-guiding plate 42, or the lower end of the smoke-isolating plate 50 is equal to the outer ends of the first smoke-guiding plate 41 and the second smoke-guiding plate 42. In this way, the first smoke-guiding plate 41 and the smoke-isolating plate 50 can gather the oil smoke on the left side to the left as much as possible, and the second smoke-guiding plate 42 and the smoke-isolating plate 50 can gather the oil smoke on the right side to the right as much as possible, and then the smoke-isolating plate 50 can at least to a certain extent block the oil smoke on the left side from flowing to the right side, and block the oil smoke on the right side from flowing to the left side. Therefore, in this embodiment, the left and right oil smoke are separated by the smoke-isolating plate 50, at least to a certain extent, the problem of cross-flow and mutual interference between the oil smoke on the left side and the oil smoke on the right side is reduced, and the smoothness of the oil smoke flow is improved.

[0093] Further, the first smoke guide plate 41 and the second smoke guide plate 42 extend obliquely from the inner end to the outer end, so that the inner end of the first smoke guide plate 41 and the smoke isolation plate 50 form a smoke guide cavity, and the oil smoke can flow along the inclined surface of the first smoke guide plate 41 to the periphery of the smoke hood 20 and flow upward through the first smoke guide channel 71. The inner end of the second smoke guide plate 42 and the smoke isolation plate 50 form a smoke guide cavity, and the oil smoke can flow along the inclined surface of the second smoke guide plate 42 to the periphery of the smoke hood 20 and flow upward through the first smoke guide channel 71.

[0094] In order to improve the exhaust efficiency of the oil smoke, a second smoke guide channel 72 is formed on the smoke isolation plate 50 , so that the oil smoke can be exhausted upward from the central area of ​​the smoke collecting chamber 21 through the second smoke guide channel 72 .

[0095] In order to collect more oil droplets, the rear wall of the smoke collecting hood 20 extends downwardly from front to back. Correspondingly, the first smoke guide plate 41 and the second smoke guide plate 42 also extend downwardly from front to back. Figure 4 As shown, a narrow and long collecting chamber 211 is formed below the smoke collecting hood 20 , and the oil smoke is transported to the fan 20 through the collecting chamber 211 .

[0096] In this embodiment, the first smoke guide plate 41, the second smoke guide plate 42, the smoke isolation plate 50 and the top of the smoke collecting hood 20 jointly form a collecting chamber 211, and the outlets of the first smoke guide channel 71 and the second smoke guide channel 72 are both connected to the collecting chamber 211. In this way, the oil smoke flowing out of the first smoke guide channel 71 and the second smoke guide channel 72 can be pre-collected in the collecting chamber 211, and then uniformly discharged to the outside.

[0097] like Figure 7 As shown, the bottom of the smoke-isolating plate 50 is provided with an oil storage tank 51 with an opening facing upward, and the left and right sides of the smoke-isolating plate 50 are both provided with second smoke guide channels 72. In this way, the oil smoke on the left side of the central area of ​​the smoke collecting chamber 21 can enter the oil storage tank 51 through the second smoke guide channel 72 on the left side of the smoke-isolating plate 50 and flow toward the collecting chamber 211 under the action of the fan 30. The oil smoke on the right side of the central area of ​​the smoke collecting chamber 21 can enter the oil storage tank 51 through the second smoke guide channel 72 on the right side of the smoke-isolating plate 50 and flow toward the collecting chamber 211 under the action of the fan 30.

[0098] The cross section of the oil storage tank 51 may be U-shaped, V-shaped or arc-shaped. Preferably, the bottom surface of the smoke isolation plate 50 is an arc-shaped surface, so as to reduce the collision of oil smoke on the bottom surface of the smoke isolation plate 50. The second smoke guide channel 73 may be a circular hole formed on the side of the smoke isolation plate 50.

[0099] Furthermore, the first smoke guide plate 41 and the second smoke guide plate 42 are symmetrically arranged on both sides of the smoke isolation plate 50, and correspondingly, the smoke collecting hood 20 is provided with a first oil filter 61, an oil filter screen 12 and a second oil filter screen 62 from left to right. The first oil filter screen 61, the oil filter screen 12 and the second oil filter screen 62 are used to condense and filter the oil smoke.

[0100] The first smoke guide plate 41 can be connected to the smoke isolation plate 50 by a snap connection, and the second smoke guide plate 42 can also be connected to the smoke isolation plate 50 by a snap connection. When the first smoke guide plate 41 and the second smoke guide plate 42 are more greasy, they can be removed from the smoke isolation plate 50 for cleaning.

[0101] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0102] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0104] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood, wherein the smoke collecting hood forms a smoke collecting cavity; a smoke guide member, the smoke guide member being arranged in the smoke collecting chamber, so as to divide the smoke collecting chamber into a collecting chamber located above the smoke guide member and a smoke guiding chamber located below the smoke guide member, wherein the outer edge of the smoke guide member and the wall surface of the smoke collecting cover define a first smoke guiding channel; A smoke-isolating plate, the smoke-isolating plate is arranged in the central area of ​​the smoke collecting chamber and at least partially protrudes from the lower surface of the inner end of the smoke guide member, and a second smoke-guiding flow channel is formed on the smoke-isolating plate; the smoke-guiding member comprises a first smoke-guiding plate and a second smoke-guiding plate respectively located on both sides of the smoke-isolating plate, and the first smoke-guiding plate and the second smoke-guiding plate are connected through the smoke-isolating plate; the first smoke-guiding plate, the second smoke-guiding plate and the smoke-isolating plate are respectively connected to the top wall of the smoke collecting chamber; The smoke isolation plate and the first smoke guide plate, and the smoke isolation plate and the second smoke guide plate are spaced apart, so that smoke inlet regulating flow channels are formed on both sides of the smoke isolation plate; the smoke isolation plate or the smoke guide member moves up and down to adjust the size of the smoke inlet regulating flow channel; A collecting chamber is formed by the smoke guiding member, the smoke isolation plate and the top of the smoke collecting hood, and outlets of the first smoke guiding channel and the second smoke guiding channel are respectively connected to the collecting chamber.

2. The range hood according to claim 1, characterized in that: The smoke collecting hood is provided with a first oil filter net and a second oil filter net. The first oil filter net is arranged opposite to the first smoke guide plate up and down, and the second oil filter net is arranged opposite to the second smoke guide plate up and down.

3. The range hood according to claim 2, characterized in that: An oil filter is provided at a position of the smoke collecting hood corresponding to the second smoke guiding channel, and an oil storage tank is formed on the smoke isolation plate. The oil storage tank and the oil filter are arranged opposite to each other up and down.

4. The range hood according to claim 3, characterized in that: The longitudinal section of the oil storage tank is U-shaped or V-shaped.

5. The range hood according to claim 3, characterized in that: The second smoke guiding channel is formed on the left side and the right side of the oil storage tank.

6. The range hood according to claim 1, characterized in that: One end of the smoke isolation plate is connected to the inner end of the smoke guide member, and the other end of the smoke isolation plate extends downward, and the lower end of the smoke isolation plate is lower than the outer end of the smoke guide member.

7. The range hood according to claim 6, characterized in that: The upper end of the smoke isolation plate is flush with the inner end upper surface of the smoke guide member.

8. The range hood according to claim 1, characterized in that: The bottom surface of the smoke isolation plate is a curved surface.

9. The range hood according to claim 1, characterized in that: The amount of smoke entering the second smoke guiding channel per unit time is smaller than the amount of smoke entering the first smoke guiding channel per unit time.

10. The range hood according to claim 1, characterized in that: The first smoke guide plate and the second smoke guide plate are arranged to be inclined downward from the inside to the outside and are symmetrically arranged relative to the smoke isolation plate.

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