A range hood

Abstract

The application discloses a range hood. The range hood comprises a box body, a flow guide member arranged in the box body and forming a smoke exhaust cavity with the box body, the flow guide member comprising a flow guide box plate, a smoke gathering part and a smoke suction part, the smoke gathering part being arranged on the flow guide box plate and recessed towards the smoke exhaust cavity to form a smoke gathering cavity, the smoke suction part being arranged on a cavity bottom wall of the smoke gathering cavity and outwardly protruding in a direction away from the smoke exhaust cavity, wherein the smoke suction part is provided with a first air inlet communicating with the smoke exhaust cavity. By forming the smoke gathering cavity recessed towards the smoke exhaust cavity on the flow guide member, and outwardly protruding of the smoke suction part from the cavity bottom wall of the smoke gathering cavity in a direction away from the smoke exhaust cavity, and the smoke suction part being provided with the first air inlet communicating with the smoke gathering cavity and the smoke exhaust cavity, the range hood provided by the application can effectively improve the smoke suction performance.

Description

Technical Field

[0001] This application relates to the field of oil fume purification technology, and in particular to an oil fume extractor. Background Technology

[0002] With the improvement of living standards, range hoods have gradually become one of the indispensable appliances in people's kitchens. Range hoods work by using the principle of fluid dynamics, drawing in and exhausting cooking fumes through a fan installed inside the hood, and filtering out some of the grease particles using a filter.

[0003] Chinese cooking produces a lot of fumes, and in family life, the kitchen is often separated from the living room or bedroom by only one wall. If the range hood cannot efficiently remove the fumes in time, it will affect the user's cooking experience and also have a negative impact on other aspects of the home. Summary of the Invention

[0004] This application provides a range hood to solve the problem of poor smoke extraction performance of range hoods.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: providing a range hood. The range hood includes: a housing; a guide member disposed in the housing, forming a smoke exhaust chamber with the housing; the guide member includes a guide plate, a smoke gathering part, and a smoke extraction part, the smoke gathering part being disposed in the guide plate and recessed towards the smoke exhaust chamber to form a smoke gathering chamber, the smoke extraction part being disposed in the bottom wall of the smoke gathering chamber and protruding outward in a direction away from the smoke exhaust chamber, wherein the smoke extraction part is provided with a first air inlet communicating with the smoke exhaust chamber.

[0006] In some embodiments, the protrusion height of the smoking section is greater than the depth of the smoke-gathering cavity.

[0007] In some embodiments, the guide box plate is provided with a smoke collection port, and the smoke collection part includes a smoke collection sidewall disposed around the smoke collection port and a smoke collection bottom wall connected between the smoke collection sidewall and the smoke collection part.

[0008] In some embodiments, the included angle between the smoke-gathering sidewall and the flow guide plate is greater than 90° and less than or equal to 150°.

[0009] In some embodiments, the smoking section includes a smoking sidewall surrounding the smoke-gathering bottom wall, and a plurality of first air inlets are distributed around the smoking sidewall, wherein the angle formed between the smoking sidewall and the smoke-gathering bottom wall is greater than 90° and less than or equal to 150°.

[0010] In some embodiments, the smoking section further includes a smoking top wall, which is disposed at the end of the smoking side wall away from the smoke-gathering bottom wall and is located outside the smoke-gathering cavity.

[0011] In some embodiments, the range hood further includes a perforated component, the perforated component having a sound-absorbing cavity, and the bottom wall of the sound-absorbing cavity having sound-absorbing holes;

[0012] The perforated component is disposed on the side of the smoking top wall facing the smoke exhaust chamber, the smoking top wall covers the silencing chamber, and the silencing hole connects the smoke exhaust chamber and the silencing chamber.

[0013] In some embodiments, the range hood further includes a silencing component housed within the silencing cavity.

[0014] In some embodiments, the range hood further includes a condenser, which is spaced apart from the guide member and blocks the smoke-gathering part and the smoke-absorbing part from the side of the guide member away from the smoke exhaust chamber. The condenser is provided with a second air inlet, which leads to the smoke-gathering chamber.

[0015] In some embodiments, the condenser includes a first condenser plate and a second condenser plate that are bent and connected. The first condenser plate is spaced apart from the guide box plate. The first condenser plate is provided with a second air inlet. The second condenser plate is bent toward the guide box plate.

[0016] In some embodiments, the first condenser plate is provided with the second air inlet at a position away from the second condenser plate and corresponding to the smoke collection chamber.

[0017] In some embodiments, the range hood further includes a liquid collection cup, which is disposed at one end of the flow guide plate and the second condensing plate, and the end of the second condensing plate away from the first condensing plate extends to the mouth of the liquid collection cup;

[0018] The liquid collection cup is used to collect the liquid on the condenser and the guide.

[0019] In some embodiments, the flow guide plate includes a first plate and a second plate that are bent, the smoke gathering part is disposed on the first plate, the angle between the second plate and the first plate is an obtuse angle, and the liquid on the second plate flows down along the second plate and the first plate in sequence.

[0020] The first box plate is arranged parallel to the first condenser plate.

[0021] In some embodiments, the smoking section extends to the position of the first condenser plate, and the distance between the first box plate and the first condenser plate is greater than or equal to 20 mm and less than or equal to 50 mm.

[0022] In some embodiments, a first bracket is provided on the side of the first housing plate facing the first condenser plate, and a second bracket is provided on the side of the first condenser plate facing the first housing plate, and the first bracket and the second bracket are detachably connected.

[0023] In some embodiments, the range hood further includes a fan and a frame, the frame being disposed on the housing and the space within the frame communicating with the exhaust chamber, the fan being disposed within the frame, and the main air outlet of the fan being disposed facing the rear wall of the frame.

[0024] In some embodiments, the first air inlet is teardrop-shaped or elongated.

[0025] The beneficial effects of this application are as follows: Unlike the prior art, this application discloses a range hood. A smoke-gathering chamber is formed by the smoke-gathering part being recessed towards the exhaust chamber, and a uniform cavity is formed within the smoke-gathering chamber through the first air inlet on the smoke-smoking part. This facilitates the gathering of cooking fumes within the smoke-gathering chamber and makes it easier to remove the fumes through the first air inlet. The smoke-smoking part protrudes outward in a direction away from the exhaust chamber to shift the negative pressure zone outward, thereby improving the suction power for cooking fumes. This not only facilitates the gathering of cooking fumes into the smoke-gathering chamber but also improves the extraction of the gathered fumes into the exhaust chamber, significantly enhancing the smoke extraction performance of the range hood. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the range hood provided in this application;

[0028] Figure 2 yes Figure 1 The diagram shows a front view of the range hood.

[0029] Figure 3 This is a schematic diagram of another embodiment of the range hood provided in this application;

[0030] Figure 4 yes Figure 3 The diagram shows a front view of the range hood.

[0031] Figure 5 yes Figure 3 The diagram shows a cross-sectional view of the range hood.

[0032] Figure 6 yes Figure 5 The diagram shows the exploded structure of the range hood.

[0033] Figure 7 yes Figure 5 The diagram shows the structure of the air guide component in the range hood.

[0034] Figure 8 yes Figure 5 The diagram shows a side view of the range hood.

[0035] Figure 9 yes Figure 8 An enlarged structural diagram of region C in the range hood shown;

[0036] Figure 10 yes Figure 5 The diagram shows the structure of the perforated component in the range hood.

[0037] Figure 11 yes Figure 5 The diagram shows the structure of the first or second bracket in the range hood. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] This application provides a range hood 100, see reference. Figures 1 to 5 , Figure 1 This is a structural schematic diagram of an embodiment of the range hood provided in this application. Figure 2 yes Figure 1 The diagram shows a front view of the range hood. Figure 3 This is a schematic diagram of another embodiment of the range hood provided in this application. Figure 4 yes Figure 3 The diagram shown is a front view of the range hood. Figure 5 yes Figure 3 The diagram shows a cross-sectional view of the range hood.

[0042] This range hood 100 can be used in kitchens and other environments with heavy oil fumes to remove large amounts of oil fumes generated in the environment, making the kitchen and other environments more comfortable and suitable for users to work in.

[0043] See also Figure 1 , Figure 2 and Figure 5 In one embodiment, the range hood 100 includes a housing 10, a guide member 20, a frame 40, a fan 50, and a liquid collection cup 60. The guide member 20 is disposed in the housing 10 and forms a smoke exhaust chamber 12 with the housing 10. The frame 40 is disposed on the housing 10, and the space inside the frame 40 communicates with the smoke exhaust chamber 12. The fan 50 is disposed inside the frame 40 to form a suction force in the smoke exhaust chamber 12 to draw out smoke mist. The fumes enter the smoke exhaust chamber 12 through the guide member 20 and are drawn out by the fan 50. The liquid collection cup 60 is disposed below the housing 10 and the guide member 20 to collect the liquid that flows down through the housing 10 and the guide member 20.

[0044] See also Figure 3 , Figure 4 and Figure 5 In another embodiment, the range hood 100 includes a housing 10, a flow guide 20, a condenser 30, a frame 40, a fan 50, and a liquid collection cup 60, wherein compared to Figure 1 The range hood 100 shown is shown. Figure 3 The range hood shown is 100 with an additional condenser component 30, the rest of the structure is the same.

[0045] The condenser 30 is located outside the exhaust chamber 12 and is spaced apart from the guide 20. The fumes enter the exhaust chamber 12 through the condenser 30 and the guide 20 and are then drawn out by the fan 50. The liquid collection cup 60 is also located below the condenser 30 and is used to collect the liquid that flows down through the condenser 30.

[0046] like Figure 1 and Figure 2 As shown, for ease of description, taking the usage scenario as an example, the side of the range hood 100 against the wall is defined as the rear of the range hood 100, the side of the range hood 100 facing the user is defined as the front, the direction of the frame 40 away from the housing 10 is defined as the top, the direction of the housing 10 away from the frame 40 is defined as the bottom, and the directions perpendicular to the front and back and the top and bottom are defined as the left and right sides of the range hood 100.

[0047] Specifically, such as Figure 5 As shown, the enclosure 10 includes a top plate 11, a back plate 13, and two side plates 15. The back plate 13 is vertically arranged or adapted to the shape of the wall of a building such as a kitchen. One side of the top plate 11 is connected to one side of the back plate 13. The top plate 11 is horizontally arranged. The two side plates 15 are arranged on the left and right sides of the top plate 11 and the back plate 13 to form a cavity structure with an exhaust space. The top plate 11, the back plate 13, and the two side plates 15 can be an integral structure or a separate structure.

[0048] Specifically, in conjunction with reference Figure 1 and Figure 5 The air guide 20 is connected to the top plate 11, the back plate 13, and the two side plates 15 on all four sides to form the smoke exhaust chamber 12. It should be noted that the connections between the top plate 11, the back plate 13, the two side plates 15, and the air guide 20 are all sealed connections, that is, the air inlet of the smoke exhaust chamber 12 is only set on the air guide 20 to avoid gaps at other connections from communicating with the outside atmosphere.

[0049] In this embodiment, the housing 10 and the flow guide 20 are independent structural components, but are fixed together by fasteners. In other embodiments, the housing 10 and the flow guide 20 can also be welded together to form an integral structural component.

[0050] The guide member 20 is inclined relative to the back plate 13 so that the liquid located in the smoke exhaust chamber 12 and condensed on one side of the guide member 20 can flow down and be guided to the bottom of the box 10.

[0051] It should be noted that most of the fumes from the exhaust chamber 12 are drawn in by the fan 50 and purified before being discharged. Inevitably, a small amount of grease and water vapor will condense on the guide component 20. The guide component 20 can then guide the liquid to the bottom and collect it in the liquid collection cup 60, so that the condensed liquid can be gathered in one place as much as possible, making it easier for users to clean and maintain the range hood 100.

[0052] In this embodiment, the flow guide 20 is connected to the lower edge of the back plate 13. The flow guide 20 is provided with a flow guide hole leading to the liquid collection cup 60. The flow guide hole can be a hole of the shape of an elongated hole or a round hole. The liquid collection cup 60 is connected to the flow guide 20 to collect liquid.

[0053] See also Figure 5 and Figure 6 , Figure 6 yes Figure 5 The diagram shows the exploded structure of the range hood.

[0054] The flow guide 20 includes a base plate 21 and a front side plate 22. The base plate 21 is connected to the lower edge of the back plate 13 and the lower edges of the two side plates 15. The base plate 21 is provided with flow guide holes and is horizontally arranged. The liquid collection cup 60 is connected to the base plate 21. The front side plate 22 is vertically arranged and is connected to the front edge of the top plate 11 and the front edges of the two side plates 15.

[0055] The front panel 22 has a narrow width along the vertical direction and is equipped with a touch panel 70 for controlling the range hood 100.

[0056] Optionally, the front panel 22 may also be equipped with function buttons, etc., to control the range hood 100 through the function buttons; or the front panel 22 may only be equipped with a display screen that displays various statuses, and the range hood 100 may be controlled through terminal devices such as mobile phones and remote controls.

[0057] Optionally, a gap is formed between the base plate 21 and the back plate 13 to lead to the liquid collection cup 60, so as to guide liquid to the liquid collection cup 60 through the gap.

[0058] Optionally, the bottom plate 21 and / or the front side plate 22 may also be structural components on the housing 10, i.e., the housing 10 includes the bottom plate 21 and / or the front side plate 22.

[0059] In this embodiment, as Figure 5 As shown, the top plate 11 has an opening that communicates with the frame 40. The frame 40 is a rectangular box and is arranged around the opening. The space inside the frame 40 is connected to the smoke exhaust chamber 12 through the opening. The fan 50 is arranged in the space of the frame 40, and the main air outlet of the fan 50 is arranged at the rear.

[0060] Specifically, the frame 40 has a rear wall 41 that is flush with the back plate 13. The main air outlet of the fan 50 is facing the rear wall 41, and the secondary air outlet of the fan 50 is facing the front wall 42 that is opposite to the rear wall 41. The distance between the fan 50 and the rear wall 41 is greater than the distance between the fan 50 and the front wall 42, so as to better provide suction force to the smoke exhaust chamber 12 through the space between the fan 50 and the rear wall 41.

[0061] Optionally, there may be a gap between the rear wall 41 and the back plate 13, that is, the rear wall 41 and the back plate 13 are parallel rather than flush; the rear wall 41 may also be an irregular shape such as an inclined flat plate or a curved plate, and the frame 40 may also be cylindrical or spherical, etc. This application does not make specific limitations on these aspects.

[0062] In this embodiment, in conjunction with reference to Figure 2 , Figure 5 and Figure 6 The guide plate 20 also includes a guide box plate 23, a smoke gathering section 24, and a smoke extraction section 25. The guide box plate 23 is connected between the bottom plate 21 and the front side plate 22. The guide box plate 23 is inclined relative to the back plate 13 to guide the liquid condensed on it to the liquid collection cup 60. The smoke gathering section 24 is disposed on the guide box plate 23 and is recessed towards the exhaust chamber 12 to form a smoke gathering chamber 240. The smoke extraction section 25 is disposed on the bottom wall of the smoke gathering chamber 240 and protrudes outward in the direction away from the exhaust chamber 12. The smoke extraction section 25 is provided with a first air inlet 250 that connects to the exhaust chamber 12. The first air inlet 250 connects the smoke gathering chamber 240 and the exhaust chamber 12 to guide the oil fumes gathered in the smoke gathering chamber 240 into the exhaust chamber 12 and finally exhaust them by the fan 50.

[0063] The suction force within the exhaust chamber 12 is transmitted to the smoke-gathering chamber 240 through the first air inlet 250, thereby creating a more stable and uniform suction force within the smoke-gathering chamber 240. Specifically, according to Bernoulli's principle and the principle of fluid continuity, the exhaust chamber 12 is located below the fan 50. The fluid flow velocity within the exhaust chamber 12 is fast, with high dynamic pressure and low static pressure. Meanwhile, the airflow forms a pressure chamber in the smoke-gathering chamber 240 through the first air inlet 250, with high static pressure and low dynamic pressure. This makes the airflow in the smoke-gathering chamber 240 more stable and reduces flow loss. Consequently, the oil fume gas entering the exhaust chamber 12 through the first air inlet 250 is more uniform, and the noise is lower, effectively improving the smoke extraction performance of the range hood 100.

[0064] Furthermore, the smoke extraction section 25 is disposed on the bottom wall of the smoke collection chamber 240 and protrudes outward in the direction away from the smoke exhaust chamber 12, thereby moving the negative pressure zone generated by the first air inlet 250 outward to be closer to the source of oil fumes, which can generate stronger suction for oil fumes, thereby better removing oil fumes and further improving the smoke extraction performance of the range hood 100.

[0065] The smoke-gathering part 24 is recessed towards the smoke exhaust chamber 12 to form a smoke-gathering chamber 240, and a uniform cavity is formed within the smoke-gathering chamber 240. This makes it easier for the smoke-gathering chamber 240 to gather the oil fumes and facilitates the better absorption of oil fumes through the first air inlet 250. The smoke-absorbing part 25 protrudes outward in the direction away from the smoke exhaust chamber 12 to move the negative pressure zone outward, thereby improving the suction power for oil fumes. This not only facilitates the gathering of oil fumes into the smoke-gathering chamber 240, but also improves the extraction of oil fumes gathered in the smoke-gathering chamber 240 into the smoke exhaust chamber 12, which can significantly improve the smoke extraction performance of the range hood 100.

[0066] See Figure 7 , Figure 7 yes Figure 5 The diagram shows the structure of the air guide component in the range hood.

[0067] In this embodiment, the baffle plate 23 includes a first plate 231 and a second plate 232 that are bent. The smoke-gathering part 24 is disposed on the first plate 231. The first plate 231 is provided with a smoke-gathering port 230, which is the opening of the smoke-gathering chamber 240. The angle between the second plate 232 and the first plate 231 is an obtuse angle, which faces away from the exhaust chamber 12. By bending the first plate 231 and the second plate 232, the width of the baffle plate 23 in the front-to-back direction and the height of the baffle plate 23 in the bottom-to-top direction are reduced. This prevents the range hood 100 from colliding with the user or cookware and makes the appearance size of the range hood 100 more in line with the user's needs when cooking, without increasing the user's cooking difficulty due to the appearance size of the range hood 100.

[0068] like Figure 8 As shown, Figure 8 yes Figure 5 The diagram shows a side view of the range hood. The second panel 232 is also connected to the lower edge of the front panel 22, and the first panel 231 is connected to the front edge of the bottom panel 21. The inclination of the second panel 232 relative to the back panel 13 is greater than that of the first panel 231 relative to the back panel 13. As a result, the liquid on the second panel 232 flows down along the second panel 232 and the first panel 231 to be collected in the liquid collection cup 60, which can prevent liquid accumulation at the connection between the first panel 231 and the second panel 232.

[0069] In other embodiments, the flow guide plate 23 may also be a single plate structure, or it may include three or four equal plates that are bent and connected. The flow guide plate 23 may also be a structural component with a convex or concave curved surface, or it may be an irregular or irregular shaped structural component. This application does not specifically limit the application in this regard.

[0070] like Figure 7As shown, the guide box plate 23 is provided with a smoke collection port 230, that is, the first box plate 231 is provided with a smoke collection port 230, and the smoke collection part 24 includes a smoke collection side wall 242 arranged around the smoke collection port 230 and a smoke collection bottom wall 244 connecting the smoke collection side wall 242 and the smoke collection part 25.

[0071] In other words, the smoke-gathering chamber 240 is formed by the space defined by the smoke-gathering side wall 242, the smoke-gathering bottom wall 244, and the smoke-smoking section 25. That is, the smoke-gathering chamber 240 is arranged around the smoke-smoking section 25, and the first air inlet 250 is arranged on the smoke-smoking section 25. This can increase the area on the smoke-smoking section 25 where the first air inlet 250 is arranged, so that the first air inlet 250 can be evenly arranged around the smoke-smoking section 25. This is conducive to forming a pressure equalization chamber in the smoke-gathering chamber 240, and also helps to accelerate the entry of the oil fumes from the smoke-gathering chamber 240 into the smoke exhaust chamber 12.

[0072] In this embodiment, the smoke collection port 230 is a rectangular opening, and four smoke collection sidewalls 242 are arranged around the four sides of the smoke collection port 230. The smoke collection bottom wall 244 and the first box plate 231 are arranged in parallel, and the smoke collection bottom wall 244 is connected between the smoke collection sidewalls 242 and the smoke extraction part 25. The smoke extraction part 25 is a convex shell structure, and the space enclosed by the smoke extraction part 25 is part of the smoke exhaust chamber 12.

[0073] The connections between the smoke-gathering sidewalls 242, between the smoke-gathering sidewalls 242 and the smoke-gathering bottom wall 244, and between the smoke-gathering bottom wall 244 and the smoke-absorbing section 25 are all rounded to facilitate the gathering and guidance of oil fumes.

[0074] In other embodiments, the smoke collection port 230 may also be circular or elliptical, the smoke collection sidewall 242 may be an annular sidewall surrounding the smoke collection port 230, the smoke collection bottom wall 244 may not be parallel to the first box plate 231, or the smoke collection bottom wall 244 may be a structural component with a curved surface.

[0075] like Figure 9 As shown, Figure 9 yes Figure 8 The diagram shows an enlarged view of area C in the range hood.

[0076] In this embodiment, the included angle A formed between the smoke-gathering sidewall 242 and the guide box plate 23 is greater than 90° and less than or equal to 150°, that is, the included angle A formed between the smoke-gathering sidewall 242 and the first box plate 231 is greater than 90° and less than or equal to 150°, so that the smoke-gathering sidewall 242 has the function of guiding the oil fume fluid, which is beneficial for the smoke-gathering sidewall 242 to guide the oil fume fluid to the bottom of the smoke-gathering chamber 240.

[0077] Research has shown that when the angle A between the smoke-gathering sidewall 242 and the guide box plate 23 exceeds 150°, the smoke-gathering sidewall 242 will exert greater resistance to the oil fume flow, which is not conducive to guiding the oil fume flow or timely removal of oil fumes.

[0078] Furthermore, when the included angle A between the smoke-gathering sidewall 242 and the guide box plate 23 is greater than or equal to 110° and less than or equal to 135°, the flow direction of the oil fume gas is relatively consistent with the extension direction of the smoke-gathering sidewall 242. As a result, the smoke-gathering sidewall 242 has a better guiding effect on the oil fume gas flow and has less resistance, which can efficiently guide the oil fume to the smoke-gathering chamber 240 to accelerate the entry of oil fume into the exhaust chamber 12.

[0079] Optionally, the included angle A formed between the smoke-gathering sidewall 242 and the guide box plate 23 can be 110°, 116°, 120°, 124°, 130° or 135°, etc.

[0080] Continue reading Figure 9 In this embodiment, the outward protrusion height of the smoking section 25 is greater than the depth of the smoke-gathering cavity 240. In other words, the smoking section 25 protrudes outward from the bottom wall of the smoke-gathering cavity 240 to the outside of the smoke-gathering cavity 240, so as to be more significantly closer to the source of oil fumes, thereby providing a stronger suction force for oil, smoke and gas fluids.

[0081] Optionally, the outward protrusion height of the smoking section 25 is less than or equal to the depth of the smoke-gathering chamber 240, and the smoking section 25 can also move the negative pressure zone outward, thereby providing a stronger suction.

[0082] See also Figure 7 and Figure 9 The smoking section 25 includes a smoking sidewall 252, which is arranged around the smoke-gathering bottom wall 244. The smoking sidewall 252 is provided with a first air inlet 250, and a plurality of first air inlets 250 are distributed around the smoking sidewall 252.

[0083] Optionally, the first air inlet 250 is teardrop-shaped or elongated.

[0084] In this embodiment, the first air inlet 250 is teardrop-shaped, and multiple first air inlets 250 are distributed around the smoke-collecting sidewall 252. The first air inlet 250 extends along the smoke-collecting sidewall 252 from one end away from the smoke-collecting bottom wall 244 to the other end near the smoke-collecting bottom wall 244. The end of the first air inlet 250 near the smoke-collecting bottom wall 244 is the large end, and the end of the first air inlet 250 away from the smoke-collecting bottom wall 244 is the small end. The distance between the air inlets gradually increases from the small end to the large end of the first air inlet 250, so that as the depth of the smoke-collecting cavity 240 increases, the first air inlet 250 provides a correspondingly increased suction range and suction capacity at the corresponding depth, so as to accelerate the suction of the oil fumes from the smoke-collecting cavity 240 into the exhaust cavity 12.

[0085] Optionally, the first air inlet 250 may also be elongated and distributed around the smoke sidewall 252, or the first air inlet 250 may also be a small hole, such as a round hole, an elliptical hole or an elongated hole, which may be distributed in an array around the smoke sidewall 252.

[0086] See Figure 9 The included angle B between the smoking sidewall 252 and the smoke-gathering bottom wall 244 is greater than 90° and less than or equal to 150°, so that the smoking sidewall 252 and the smoke-gathering sidewall 242 form a conical space, so that the oil fumes are more concentrated as the depth of the smoke-gathering cavity 240 increases, which is conducive to the first air inlet 250 drawing in oil fumes.

[0087] Furthermore, when the included angle B is within this angle range, the suction direction generated by the fan 50 through the first air inlet 250 is also more consistent with the flow direction of the oil fume gas. That is, their directions are more consistent, which makes the suction force of the first air inlet 250 on the oil fume gas fluid stronger and the resistance encountered by the oil fume gas fluid less. This allows the oil fume gas fluid to enter the exhaust chamber 12 more efficiently along the first air inlet 250, which is beneficial to improving the smoke extraction performance of the range hood 100.

[0088] Research has shown that if the angle B formed between the smoking sidewall 252 and the smoke-gathering bottom wall 244 is less than 90° or more than 150°, the smoking sidewall 252 will have greater resistance to the flow of oily fumes, which is not conducive to the timely removal of oily fumes.

[0089] Furthermore, when the included angle B formed between the smoking sidewall 252 and the smoke-gathering bottom wall 244 is greater than or equal to 120° and less than or equal to 150°, the resistance of the smoking sidewall 252 to the oil fume flow is further reduced, and the first air inlet 250 has a better smoke-smoking effect.

[0090] Optionally, the included angle B formed between the smoking sidewall 252 and the smoke-gathering bottom wall 244 can be 120°, 126°, 130°, 134°, 140° or 145°, etc.

[0091] See also Figure 7 and Figure 9 The smoke extraction section 25 also includes a smoke extraction top wall 254, which is located at the end of the smoke extraction side wall 252 away from the smoke collection bottom wall 244. The smoke extraction top wall 254 is located outside the smoke collection chamber 240, that is, the smoke extraction side wall 252 also extends outside the smoke collection chamber 240, thereby moving the negative pressure zone outward to improve the suction power of the range hood 100 for oil fumes and other airflows, thereby improving the smoke extraction performance of the range hood 100.

[0092] The top wall 254 of the smoke extraction system is a plate-like structure and is arranged parallel to the first box plate 231. As a result, the suction force generated by the first air inlet 250 on the smoke extraction side wall 252 on all parts of the smoke collection chamber 240 is the same, and the degree of negative pressure zone displacement is also consistent, so the intake of oil fumes can have good consistency.

[0093] Optionally, the top wall of the smoke extraction device 254 may also be provided with an air inlet, so as to more efficiently draw in cooking fumes; the top wall of the smoke extraction device 254 may also have a curved structure that protrudes outward or is recessed inward.

[0094] See Figure 5 , Figure 6 and Figure 10 ,in Figure 10 yes Figure 5 The diagram shows the structure of the perforated component in the range hood. Further, the range hood 100 also includes a perforated component 80, which has a silencing cavity 82. The bottom wall of the silencing cavity 82 has a silencing hole 84. The perforated component 80 is located on the side of the smoke extraction top wall 254 facing the exhaust cavity 12. The smoke extraction top wall 254 covers the silencing cavity 82, and the silencing hole 84 connects the exhaust cavity 12 and the silencing cavity 82.

[0095] The perforated part 80 can be connected to the side of the smoke extraction top wall 254 facing the smoke exhaust chamber 12 by means of fasteners or welding, so that the smoke extraction top wall 254 covers the silencing chamber 82, and the smoke exhaust chamber 12 and the silencing chamber 82 are connected through the silencing hole 84, thereby attenuating the reflection of noise in the range hood 100 and effectively eliminating the noise in the smoke exhaust chamber 12.

[0096] Specifically, such as Figure 10 As shown, the perforated part 80 is a shell structure, forming a silencing cavity 82. After the silencing cavity 82 is covered by the smoking top wall 254, the smoke exhaust cavity 12 and the silencing cavity 82 are connected only through the silencing holes 84. The bottom wall of the silencing cavity 82 is covered with silencing holes 84, so that noise can be introduced into the silencing cavity 82 through the silencing holes 84, thereby achieving the effect of noise reduction.

[0097] The diameter of the silencing hole 84 is greater than or equal to 3 mm and less than or equal to 10 mm. Studies have shown that the silencing hole 84 within this diameter range can achieve a good noise reduction effect.

[0098] Furthermore, the diameter of the silencing hole 84 is greater than or equal to 3mm and less than or equal to 5mm, which enables the silencing hole 84 to achieve a better noise reduction effect.

[0099] Furthermore, such as Figure 5 and Figure 6As shown, the range hood 100 also includes a sound-absorbing component 86, which is housed in a sound-absorbing cavity 82. The sound-absorbing component 86 has the function of absorbing sound and reducing noise, thereby more effectively reducing the noise of the range hood 100.

[0100] Optionally, the sound-absorbing component 86 can be sound-absorbing cotton or sound-absorbing cloth, etc.

[0101] like Figures 3 to 6 As shown, the range hood 100 may also include a condenser 30, which is spaced apart from the guide member 20 and blocks the smoke collection part 24 and the smoke extraction part 25 from the side of the guide member 20 away from the smoke exhaust chamber 12. The condenser 30 is provided with a second air inlet 32, which leads to the smoke collection chamber 240.

[0102] The condenser 30, located on the side of the guide member 20 away from the exhaust chamber 12, blocks the smoke-gathering part 24 and the smoke-absorbing part 25. This means the smoke-gathering chamber 240 is not visually visible from this side. The condenser 30 is spaced apart from the guide member 20, and while it blocks the smoke-gathering chamber 240, it does not completely cover it. This allows the negative pressure generated within the smoke-gathering chamber 240 to expand further outwards through the condenser 30, bringing it closer to the source of the cooking fumes and effectively improving the smoke extraction performance of the range hood 100. A space for the extraction of cooking fumes is formed between the periphery of the condenser 30 and the guide member 20. The oily fumes generated in kitchens and other environments can be drawn into the smoke-collecting chamber 240 through the gap 31. That is, the oily fumes enter the smoke-collecting chamber 240 through the gap 31 and the second air inlet 32, which avoids the smoke-collecting chamber 240 directly acting on the smoke extraction. In other words, the smoke-collecting chamber 240 is able to extract the oily fumes through the gap 31 and the second air inlet 32 ​​by the shielding of the condenser 30. By appropriately reducing the size of the inlet of the oily fume flow, the suction power of the range hood 100 on the oily fume flow can be further enhanced, and the smoke extraction performance of the range hood 100 can be further improved.

[0103] The condenser 30 shields the smoke-gathering part 24 and the smoke-drawing part 25, which not only enhances the aesthetics of the range hood 100 visually, but also allows the negative pressure generated in the smoke-gathering chamber 240 to expand outward and draw in fumes through the gap 31 and the second air inlet 32. At the same time, the smoke-gathering chamber 240 provides a more stable suction force. Thus, the interdependence and cooperation of the above factors can effectively improve the suction performance of the range hood 100, enabling the efficient and rapid extraction and removal of gaseous fluids such as fumes, creating a comfortable working environment for users, reducing user fatigue, and improving user physical and mental well-being.

[0104] Furthermore, when the gaseous fluid passes through the condenser 30, some of the water vapor it carries can condense on the condenser 30. The condenser 30 guides the condensed liquid to the liquid collection cup 60, that is, the condenser 30 also has the function of condensing liquid.

[0105] The second air inlet 32 ​​is an elongated hole or a teardrop hole, and is arranged in rows or in a ring on the condenser 30. The second air inlet 32 ​​can be set on the lower side of the condenser 30 closer to the smoke source, so as to be closer to the source of the oily fumes. Alternatively, the second air inlet 32 ​​can be set on the upper side of the condenser 30 away from the smoke source, so as to fully draw the diffused oily fumes into the smoke collection chamber 240.

[0106] like Figure 4 and Figure 8 As shown, the condenser 30 includes a first condenser plate 33 and a second condenser plate 34 that are bent and connected. The first condenser plate 33 is spaced apart from the guide box plate 23. The first condenser plate 33 is provided with the second air inlet 32. The second condenser plate 34 is bent toward the guide box plate 23.

[0107] Specifically, the first condensing plate 33 is spaced apart from the first box plate 231, and the second condensing plate 34 is located below the first condensing plate 33. The second condensing plate 34 is bent toward the first box plate 231 and blocks the smoke collection chamber 240 from the bottom. The first condensing plate 33 plays a guiding role for the oil fumes. The condensing component 30 forms gaps 31 between itself and the guiding component 20 on the left and right sides and the top side. The first condensing plate 33 is provided with a second air inlet 32. The oil fumes that diffuse upward along the second condensing plate 34 and / or the first condensing plate 33 are drawn into the smoke collection chamber 240 through the second air inlet 32, thereby preventing the oil fumes from overflowing and efficiently removing oil fumes from the environment.

[0108] By setting a second air inlet 32 ​​on the first condenser plate 33, a wider smoke-absorbing area can be covered, and a more uniform and stronger suction force can be generated. This allows the oil fumes to be sucked away in a timely and efficient manner, making it less likely for the oil fumes to spread in the kitchen and other environments, thus achieving a better smoke-absorbing effect.

[0109] Specifically, the first condenser plate 33 is covered with second air inlets 32 at positions away from the second condenser plate 34 and corresponding to the smoke collection chamber 240. The distribution of the second air inlets 32 is offset from the position corresponding to the smoke collection top wall 254, and the second air inlets 32 lead to the smoke collection chamber 240. The second air inlets 32 can be elongated or teardrop-shaped, and are distributed in single or multiple rows on the second condenser plate 34.

[0110] like Figure 8 As shown, the liquid collection cup 60 is disposed at one end of the flow guide plate 23 and the second condensing plate 34. The end of the second condensing plate 34 away from the first condensing plate 33 extends to the mouth of the liquid collection cup 60, but the second condensing plate 34 is still spaced from the flow guide plate 23. The liquid collection cup 60 is used to collect the liquid condensed on the condensing component 30 and the flow guide 20.

[0111] The first box plate 231 and the first condenser plate 33 are arranged in parallel so that the size of the gap 31 formed is more uniform, the suction force generated at each place is more consistent, and the ability to extract oil fumes is more consistent.

[0112] See also Figure 8 and Figure 9 The smoke extraction section 25 extends to the position of the first condensing plate 33; in other words, the smoke extraction section 25 is extremely close to the first condensing plate 33. The distance L between the first box plate 231 and the first condensing plate 33 is greater than or equal to 20 mm and less than or equal to 50 mm. Within this size range, the expanded negative pressure zone can have a strong suction force on the oil fumes, and can remove the oil fumes more efficiently.

[0113] Research has shown that when the distance L between the first box plate 231 and the first condenser plate 33 is less than 20mm, the negative pressure zone expands too little, resulting in insufficient suction of oil fumes at a distance, which easily leads to the diffusion of oil fumes. When the distance L between the first box plate 231 and the first condenser plate 33 exceeds 50mm, the negative pressure zone expands too much, resulting in weak suction of oil fumes at the gaps 31 on the left and right sides of the condenser 30, which also easily leads to the diffusion of oil fumes on the left and right sides.

[0114] More specifically, the distance L between the first box plate 231 and the first condenser plate 33 is greater than or equal to 30 mm and less than or equal to 40 mm. Within this size range, the condenser 30 has a stronger suction force for oil fumes, thus enabling it to remove oil fumes more efficiently.

[0115] Optionally, the distance L between the first box plate 231 and the first condensing plate 33 can be 30mm, 32mm, 34mm, 36mm, 38mm or 40mm, etc.

[0116] like Figure 6 As shown, a first bracket 35 is provided on the side of the first box plate 231 facing the first condensing plate 33, and a second bracket 36 is provided on the side of the first condensing plate 33 facing the first box plate 231. The first bracket 35 and the second bracket 36 are detachably connected, for example, by fasteners, or the first bracket 35 and the second bracket 36 can be inserted into each other, or the second bracket 36 can be hooked onto the first bracket 35.

[0117] like Figure 11 As shown, Figure 11 yes Figure 5The diagram shows the structure of the first or second bracket in the range hood. In this embodiment, the first bracket 35 and the second bracket 36 have the same structure. Both the first bracket 35 and the second bracket 36 include a support plate 350 and a connecting plate 352 connected to each other. The support plate 350 and the connecting plate 352 can be connected vertically or at a certain angle. The support plate 350 is disposed on the first box plate 231 or the first condenser plate 33. The connecting plate 352 is provided with a connecting hole 354, which can be a threaded hole or a through hole. The connecting plates 352 on the first bracket 35 and the second bracket 36 are connected by fasteners.

[0118] The first box plate 231 is provided with first brackets 35 on the left and right sides respectively, and the first condensing plate 33 is also provided with corresponding second brackets 36 on the left and right sides respectively. After the two sets of connecting plates 352 are aligned, they are fixed by fasteners so that the condensing component 30 is spaced apart from the flow guide 20 and the smoke collection chamber 240 is blocked.

[0119] Optionally, a driving mechanism may be provided between the condenser 30 and the guide member 20. The driving mechanism is used to drive the condenser 30 and the guide member 20 to be spaced apart or in contact. In the working state, the driving mechanism drives the condenser 30 and the guide member 20 to be spaced apart. In the non-working state, the driving mechanism drives the condenser 30 and the guide member 20 to be in contact. The driving mechanism may include a linkage assembly and a motor. The motor is connected to the linkage assembly. The linkage assembly includes at least two cross-arranged links. The two links are arranged between the condenser 30 and the guide member 20. The motor drives the linkage assembly so that the condenser 30 and the guide member 20 are spaced apart or in contact.

[0120] In other embodiments, the condenser 30 may also be a condenser plate, or both the first condenser plate 33 and the second condenser plate 34 may be provided with a second air inlet 32, or only the second condenser plate 34 may be provided with a second air inlet 32, or the condenser 30 may be in the shape of a cover and fasten the smoke collection chamber 240. This application does not make specific limitations in this regard.

[0121] like Figure 2 As shown, Figure 2 The arrows without labels in the diagram are schematic diagrams illustrating the flow direction of the oil fume fluid. In one embodiment, the range hood 100 does not include a condenser 30; when the range hood 100 is working, the smoke extraction section 25 moves the negative pressure zone outward, which can enhance the suction power for oil fumes, thereby more efficiently removing the oil fumes. Consequently, the oil fume fluid can be quickly drawn into the smoke collection chamber 240, which can also gather the oil fumes, facilitating their entry into the exhaust chamber 12 through the first air inlet 250 on the smoke extraction section 25, effectively improving the smoke extraction performance of the range hood 100.

[0122] like Figure 4 and Figure 8As shown, Figure 4 and Figure 8 The arrows drawn in the diagram illustrate the direction of oil fume flow. In another embodiment, the range hood 100 includes a condenser 30; when the range hood 100 is working, the condenser 30 can further expand the negative pressure zone, thereby providing stronger suction around the condenser 30 to more effectively remove oil fumes, thus effectively improving the smoke extraction performance of the range hood 100.

[0123] In this embodiment, the oily fumes and fluids are gathered in the smoke-gathering chamber 240 from the gaps 31 on the left and right sides of the second air inlet 32 ​​and the condenser 30, and then enter the smoke exhaust chamber 12 through the first air inlet 250 on the smoke extraction section 25. Most of the oily fumes and fluids in the smoke exhaust chamber 12 are drawn into the main air inlet of the fan 50, and a small portion is diverted to the auxiliary air inlet of the fan 50. After purification, they are discharged to the outside.

[0124] Unlike existing technologies, this application discloses a range hood. A smoke-gathering chamber is formed by a concave section facing the exhaust chamber, and a uniform cavity is created within the smoke-gathering chamber through a first air inlet on the smoke-collecting section. This facilitates the gathering of cooking fumes within the smoke-gathering chamber and allows for better extraction of fumes through the first air inlet. The smoke-collecting section protrudes outwards in a direction away from the exhaust chamber to shift the negative pressure zone outwards, thereby increasing the suction power for cooking fumes. This not only facilitates the gathering of cooking fumes into the smoke-gathering chamber but also improves the extraction of the gathered fumes into the exhaust chamber, significantly enhancing the range hood's smoke extraction performance.

[0125] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A range hood, characterized in that, The range hood includes: Box; A flow guide is disposed in the housing and forms a smoke exhaust chamber with the housing; The flow guide includes a flow guide plate, a smoke gathering part, and a smoke extraction part. The smoke gathering part is disposed on the flow guide plate and is recessed towards the smoke exhaust chamber to form a smoke gathering chamber. The smoke extraction part is disposed on the bottom wall of the smoke gathering chamber and protrudes outward in a direction away from the smoke exhaust chamber. The smoke extraction part is provided with a first air inlet communicating with the smoke exhaust chamber. The condenser includes a first condenser plate and a second condenser plate that are bent and connected. The condenser plate is spaced apart from the guide plate and blocks the smoke gathering part and the smoke extraction part from the side of the guide plate away from the smoke exhaust chamber. The first condenser plate is provided with a second air inlet, and the second air inlet leads to the smoke gathering chamber. The first condenser plate and the guide box plate are spaced apart, and the second condenser plate is bent toward the guide box plate; the first condenser plate is covered with second air inlets at positions away from the second condenser plate and corresponding to the smoke collection chamber. The flow guide plate includes a first plate and a second plate that are bent. The smoke gathering part is disposed on the first plate. The angle between the second plate and the first plate is an obtuse angle. The inclination of the second plate relative to the back plate of the box body is greater than the inclination of the first plate relative to the back plate. The liquid on the second plate flows down along the second plate and the first plate in sequence. The first box plate is arranged parallel to the first condenser plate.

2. The range hood according to claim 1, characterized in that, The protruding height of the smoking section is greater than the depth of the smoke-gathering cavity.

3. The range hood according to claim 1, characterized in that, The guide box plate is provided with a smoke collection port, and the smoke collection part includes a smoke collection side wall arranged around the smoke collection port and a smoke collection bottom wall connecting the smoke collection side wall and the smoke collection part.

4. The range hood according to claim 3, characterized in that, The angle between the smoke-gathering sidewall and the flow guide plate is greater than 90° and less than or equal to 150°.

5. The range hood according to claim 3, characterized in that, The smoking section includes a smoking sidewall, which is arranged around the smoke-gathering bottom wall. A plurality of first air inlets are distributed around the smoking sidewall, wherein the angle formed between the smoking sidewall and the smoke-gathering bottom wall is greater than 90° and less than or equal to 150°.

6. The range hood according to claim 5, characterized in that, The smoking section also includes a smoking top wall, which is located at the end of the smoking side wall away from the smoke-gathering bottom wall and is located outside the smoke-gathering cavity.

7. The range hood according to claim 6, characterized in that, The range hood also includes a perforated component, which has a sound-absorbing cavity, and the bottom wall of the sound-absorbing cavity has sound-absorbing holes; The perforated component is disposed on the side of the smoking top wall facing the smoke exhaust chamber, the smoking top wall covers the silencing chamber, and the silencing hole connects the smoke exhaust chamber and the silencing chamber.

8. The range hood according to claim 7, characterized in that, The range hood also includes a sound-absorbing component, which is housed in the sound-absorbing cavity.

9. The range hood according to claim 1, characterized in that, The range hood also includes a liquid collection cup, which is disposed at one end of the flow guide plate and the second condenser plate, and the end of the second condenser plate away from the first condenser plate extends to the mouth of the liquid collection cup; The liquid collection cup is used to collect the liquid on the condenser and the guide.

10. The range hood according to claim 1, characterized in that, The smoking section extends to the position of the first condenser plate, and the distance between the first box plate and the first condenser plate is greater than or equal to 20 mm and less than or equal to 50 mm.

11. The range hood according to claim 1, characterized in that, The first box plate is provided with a first bracket on the side facing the first condenser plate, and the first condenser plate is provided with a second bracket on the side facing the first box plate. The first bracket and the second bracket are detachably connected.

12. The range hood according to claim 1, characterized in that, The range hood also includes a fan and a frame. The frame is mounted on the housing and the space inside the frame is connected to the exhaust chamber. The fan is mounted inside the frame and the main air outlet of the fan faces the rear wall of the frame.

13. The range hood according to claim 1, characterized in that, The first air inlet is teardrop-shaped or elongated.

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