Range hood with air curtain

Abstract

The range hood with the air curtain comprises an exhaust fume collecting hood and an exhaust fume exhaust hood, a cavity is formed in the exhaust fume collecting hood, a mounting opening is formed in the top of the exhaust fume collecting hood, a fume inlet and an air outlet are formed in the bottom end of the exhaust fume collecting hood, and the air outlet is formed in the side portion of the fume inlet; a baffle section is arranged at the bottom end of the exhaust hood, is mounted at the mounting opening and extends into the cavity, and divides the cavity into a smoke collecting cavity section and an air curtain cavity section which are isolated from each other; the smoke collecting cavity section is communicated with the smoke inlet and is used for adsorbing oil smoke; the air curtain cavity section communicates with the air outlet and is used for forming an air curtain on one side of the smoke inlet. According to the utility model, the smoke collecting cavity section and the air curtain cavity section in the smoke collecting hood are isolated by the baffle section at the bottom end of the smoke exhaust hood, so that air flows of the two cavity sections run independently, and the situation that the local air flow direction is disordered when the two air flows in different directions converge in the smoke collecting hood is avoided.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a range hood with an air curtain. Background Technology

[0002] Currently, air curtain range hoods rely on an internal motor to drive a fan, generating suction to draw cooking fumes from the bottom of the hood into the interior and then exhaust them outdoors through a fume extraction channel. Simultaneously, another fan creates an air curtain between the fume extraction area and the outside space. This air curtain effectively prevents the fumes from spreading outwards, concentrating them within the extraction area for more efficient absorption.

[0003] However, in the existing internal structure of air curtain range hoods, the main suction duct and the air curtain circulation duct are usually not completely separated. When the main suction duct operates, it generates a strong suction force inside the range hood, while the air curtain circulation duct blows airflow outwards. As a result, these two opposing airflows converge inside the range hood, causing localized chaotic airflow. This situation prevents fumes from being effectively drawn into the main suction duct in the pre-set direction, ultimately reducing the range hood's fume capture efficiency. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides a range hood with an air curtain. After the exhaust hood and the smoke collection hood are installed, the smoke collection chamber section and the air curtain chamber section are separated by the baffle plate section at the bottom of the exhaust hood. This ensures that the airflow of the two chamber sections runs independently and avoids the problem of the range hood's suction power for oil fumes becoming weak or the air curtain effect becoming poor due to the convergence of two airflows in different directions in the smoke collection hood.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A range hood with an air curtain, comprising,

[0007] A smoke collection hood has a cavity inside, an installation opening at the top, a smoke inlet and an air outlet at the bottom, and the air outlet is located on the side of the smoke inlet.

[0008] A smoke exhaust hood is provided at its bottom end with a baffle plate section. The baffle plate section is installed at the mounting opening and extends into the cavity. The baffle plate section divides the cavity into a smoke collection chamber section and an air curtain chamber section that are isolated from each other. The smoke collection chamber section is connected to the smoke inlet and is used to absorb oil fumes. The air curtain chamber section is connected to the air outlet and is used to form an air curtain on one side of the smoke inlet.

[0009] Further, the bottom end of the smoke exhaust hood is provided with two barrier plate segments, and the two barrier plate segments are oppositely arranged; the smoke collecting cavity segment is formed between the two barrier plate segments, and the air curtain cavity segment is formed on the side of the barrier plate segment away from the smoke collecting cavity segment.

[0010] Further, the two sides of the barrier plate segment are respectively abutted against the two side walls of the cavity, and the bottom end of the barrier plate segment is detachably connected with the bottom wall of the cavity.

[0011] Further, the bottom end of the smoke exhaust hood is provided with a barrier cover, the barrier cover comprises at least three barrier plate segments, and the at least three barrier plate segments are sequentially connected in a head-to-tail mode; the barrier cover is installed in the mounting port and extends into the cavity, the bottom of the barrier cover is detachably connected with the bottom wall of the cavity, the smoke collecting cavity segment is formed in the barrier cover, and the air curtain cavity segment is formed on the outer periphery of the barrier cover.

[0012] Further, the barrier plate segment is a flat plate, and the flat plate is gradually inclined towards the smoke collecting cavity segment from the lower end to the upper end.

[0013] Further, the barrier plate segment is integrally formed on the smoke exhaust hood.

[0014] Further, the cavity is provided with a groove, and the periphery of the barrier plate segment is provided with a convex edge, and the convex edge is detachably inserted into the groove.

[0015] Further, the outer periphery of the barrier plate segment is provided with an elastic pad, and the elastic pad is used for being extruded and deformed when the barrier plate segment is assembled with the cavity, so as to seal the gap between the barrier plate and the cavity.

[0016] Further, the barrier plate segment is an elastic plate.

[0017] Further, the bottom of the smoke collecting hood is provided with an oil fume suction area, the smoke inlet port is communicated between the oil fume suction area and the smoke collecting cavity segment, the air curtain cavity segment is arranged on the two sides of the smoke collecting cavity segment, the air outlet port is arranged on the bottom end of the two sides of the smoke collecting hood, the smoke collecting hood is further provided with an air inlet port, the air curtain cavity segment is provided with an air curtain fan, and the air curtain fan is used for guiding the airflow to enter the air inlet port and be guided out of the air outlet port, so as to form the air curtain on the two sides of the oil fume suction area.

[0018] In conclusion, the oil fume exhaust device with the air curtain has the following technical effects:

[0019] 1) The utility model discloses a smoke exhaust cover bottom part is provided with the baffle section, when the smoke exhaust cover is installed with the smoke collecting cover, the baffle section can divide the cavity of smoke collecting cover into the smoke collecting cavity section and the air curtain cavity section of mutual isolation, makes the airflow of two cavity sections independent operation, and the fan does not need to overcome the additional resistance produced because of airflow mutual interference when working, can produce greater suction and air curtain effect.

[0020] 2) The utility model discloses a smoke exhaust cover bottom part is provided with the baffle section, when the smoke exhaust cover is installed with the smoke collecting cover, the baffle section can divide the cavity of smoke collecting cover into the smoke collecting cavity section and the air curtain cavity section of mutual isolation, makes the airflow of two cavity sections independent operation, and the fan does not need to overcome the additional resistance produced because of airflow mutual interference when working, can produce greater suction and air curtain effect.

[0021] 3) The utility model discloses a smoke exhaust cover bottom part is provided with the baffle section, when the smoke exhaust cover is installed with the smoke collecting cover, the baffle section can divide the cavity of smoke collecting cover into the smoke collecting cavity section and the air curtain cavity section of mutual isolation, makes the airflow of two cavity sections independent operation, and the fan does not need to overcome the additional resistance produced because of airflow mutual interference when working, can produce greater suction and air curtain effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic drawing of the range hood of the utility model embodiment;

[0023] Figure 2 It is the structure schematic drawing of the smoke collecting cover of the utility model embodiment;

[0024] Figure 3 It is the longitudinal section view of the smoke collecting cover of the utility model embodiment;

[0025] Figure 4 It is the longitudinal section view of the range hood of the utility model embodiment;

[0026] Figure 5 It is the structure schematic drawing of the smoke exhaust cover of the utility model embodiment;

[0027] Figure 6 It is the structure schematic drawing of the range hood of the utility model embodiment after hiding backboard;

[0028] Figure 7 It is the plan view of the range hood of the utility model embodiment;

[0029] Figure 8 It is Figure 7 Sectional view at A-A.

[0030] Among them, the meaning of the reference sign is as follows:

[0031] 1, hood; 10, cavity; 11, smoke collection cavity section; 12, air curtain cavity section; 121, mounting cavity section; 122, blocking cavity section; 13, smoke inlet; 14, air outlet; 15, air inlet; 16, oil fume suction area; 17, mounting port; 2, air curtain fan; 21, adjusting plate; 22, mounting seat; 23, fan; 3, smoke exhaust hood; 31, smoke exhaust cavity; 32, smoke exhaust fan; 33, blocking plate section; 34, blocking cover. DETAILED DESCRIPTION

[0032] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0033] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] Referring to Figure 1 The present application discloses an oil fume extractor with air curtain, which comprises a smoke collection hood 1 and a smoke exhaust hood 3; wherein the bottom end of the smoke collection hood 1 is provided with a smoke inlet 13 and an air outlet 14, and the air outlet 14 is arranged on the side of the smoke inlet 13, referring to Figure 2 and Figure 3 The smoke collection hood 1 is provided with a cavity 10, and the top of the smoke collection hood 1 is provided with a mounting port 17.

[0036] Referring to Figure 4 The bottom end of the smoke exhaust hood 3 is provided with a blocking plate section 33, specifically, the blocking plate section 33 is mounted in the mounting port 17 and extends into the cavity 10, and the blocking plate section 33 divides the cavity 10 into a smoke collection cavity section 11 and an air curtain cavity section 12 which are isolated from each other. The smoke collection cavity section 11 is communicated with the smoke inlet 13 and is used for adsorbing oil fume; the air curtain cavity section 12 is communicated with the air outlet 14 and is used for forming an air curtain on the side of the smoke inlet 13.

[0037] On the basis of the structure, when the range hood with the air curtain is used, when the range hood is turned on, the related fan assembly in the smoke exhaust cover 3 starts to work, and suction is generated near the smoke collecting cavity section 11 and the smoke inlet 13. The oil fume generated by the stove is quickly sucked into the smoke inlet 13 under the action of the suction of the smoke collecting cavity section 11 during the rising process, and flows to the inside of the smoke exhaust cover 3 along the channel of the smoke collecting cavity section 11. At the same time, the air curtain cavity section 12 also starts to work, blows out the air in the air curtain cavity section 12 from the air outlet 14 located at the side of the smoke inlet 13 at a certain speed and angle, and forms a continuous air curtain.

[0038] The air outlet 14 can be arranged on one side or both sides of the smoke inlet 13, and forms an air curtain on one side or both sides of the smoke inlet 13. When the oil fume rises, the air curtain blocks the oil fume from spreading to other areas of the kitchen, so that the oil fume can only move towards the smoke collecting opening, thereby improving the efficiency of the oil fume being sucked into the smoke collecting cavity section 11. When the air outlet 14 is arranged on only one side of the smoke inlet 13, the blocking plate section 33 divides the cavity 10 into a smoke collecting cavity section 11 and an air curtain cavity section 12.

[0039] It should be noted that if the smoke collecting cavity section 11 and the air curtain cavity section 12 are not separated and isolated from each other, the smoke collecting cavity section 11 will generate strong suction when working, and the surrounding air and oil fume will be sucked into the smoke collecting cover 1 together. The air curtain cavity section 12 blows out the airflow towards the outside of the smoke collecting cover 1, and the blown air has a certain direction and speed. When the two airflows with different directions meet in the smoke collecting cover 1, the local airflow direction will be disordered. The fan needs to overcome the additional resistance caused by the mutual interference of the airflows when working, which will cause the suction force of the smoke collecting cavity section 11 to be smaller, and the air curtain effect of the air curtain cavity section 12 to be poorer.

[0040] Therefore, the application divides the cavity 10 of the smoke collecting cover 1 into the smoke collecting cavity section 11 and the air curtain cavity section 12 by arranging the blocking plate section 33 at the bottom of the smoke exhaust cover 3. After the smoke exhaust cover 3 and the smoke collecting cover 1 are installed, the blocking plate section 33 can separate the cavity 10 into the smoke collecting cavity section 11 and the air curtain cavity section 12, so that the airflows of the two cavity sections run independently. The fan does not need to overcome the additional resistance caused by the mutual interference of the airflows when working, and can generate greater suction force and air curtain effect. The airflow in the smoke collecting cavity section 11 can flow stably and is not disturbed by the air curtain airflow, thereby ensuring the strong and stable suction capacity for the oil fume.

[0041] In addition, the application arranges the blocking plate section 33 at the bottom of the smoke exhaust cover 3, so that when the range hood is assembled, the smoke exhaust cover 3 only needs to be installed on the smoke collecting cover 1, and the separation of the smoke collecting cavity section 11 and the air curtain cavity section 12 can be directly realized. Therefore, the complex steps of separately installing and adjusting the blocking plate are reduced, and the installer does not need to perform complex operations inside the smoke collecting cover 1 to install and position the blocking plate.

[0042] In some embodiments, the bottom end of the smoke exhaust hood 3 is provided with two blocking plate segments 33, as shown in Figure 4 The two blocking plate segments 33 are oppositely arranged. The smoke collecting cavity segment 11 is formed between the two blocking plate segments 33, and the air curtain cavity segment 12 is formed on the side of the blocking plate segment 33 away from the smoke collecting cavity segment 11.

[0043] Thus, the two blocking plate segments 33 divide the cavity 10 into two air curtain cavity segments 12 and one smoke collecting cavity segment 11.

[0044] On this basis, when the range hood is started, the fans in the two air curtain cavity segments 12 also start to work, driving the air in the air curtain cavity segments 12 to blow out from the air outlets 14 located on the side of the smoke inlet 13, forming a continuous air curtain on the side of the smoke inlet 13. Since the two air curtain cavity segments 12 are respectively located on the two sides of the smoke collecting cavity segment 11, air curtains are formed on both sides of the smoke inlet 13, and the two air curtains work together to confine the oil fume to the corresponding area of the smoke collecting cavity segment 11, preventing it from spreading to both sides.

[0045] Since the smoke collecting cavity segment 11 is bounded by the two oppositely arranged blocking plate segments 33, the oil fume at the smoke inlet 13 can enter the smoke collecting cavity segment 11 along the blocking plate segments 33 and then enter the smoke exhaust hood 3. Thus, the blocking plate segments 33 provide a clear flow path for the oil fume rising at the smoke inlet 13, enabling the oil fume to enter the smoke collecting cavity segment 11 in a preset direction and avoiding disordered diffusion of the oil fume in the smoke hood 1.

[0046] Further, the two sides of the blocking plate segment 33 abut against the two side walls of the cavity 10, and the bottom end of the blocking plate segment 33 is detachably connected with the bottom wall of the cavity 10.

[0047] Specifically, the shape of the longitudinal section of the blocking plate segment 33 can be set to match the shape of the longitudinal section of the cavity 10, so that the length of the blocking plate segment 33 in the horizontal direction matches the width of the cavity 10, to ensure that the two sides of the blocking plate segment 33 can tightly fit the two side walls of the cavity 10. Then, screw fixing, slot and block cooperation, etc. can be used for connection to ensure the stability and sealing of the connection. Such a connection mode enables the blocking plate segment 33 to stably divide the cavity 10 in the transverse direction, forming the side boundaries of the smoke collecting cavity segment 11 and the air curtain cavity segment 12, effectively preventing the leakage or cross flow of oil fume or air flow on the side.

[0048] In addition, the bottom end of the blocking plate segment 33 and the bottom wall of the cavity 10 are detachably connected, such as using screw fixing, bolt connection, etc.

[0049] In this way, the barrier plate segment 33 can be removed from the bottom wall and the side wall of the cavity 10 when needed, for example, when deep cleaning, repairing the internal components of the smoke collecting cavity segment 11, or checking the air duct of the air curtain cavity segment 12, etc. During the operation of the range hood, neither the vibration generated by the fan nor the impact of the airflow can easily cause the barrier plate segment 33 to move laterally, thereby always maintaining the effective separation of the smoke collecting cavity segment 11 and the air curtain cavity segment 12.

[0050] In other embodiments, referring to Figure 5 and Figure 6 , the bottom end of the smoke exhaust hood 3 is provided with a barrier cover 34, which includes at least three barrier plate segments 33, and the at least three barrier plate segments 33 are connected end to end in sequence. Among them, the barrier cover 34 is installed in the mounting port 17 and extends into the cavity 10, the bottom of the barrier cover 34 is detachably connected with the bottom wall of the cavity 10, and the smoke collecting cavity segment 11 is formed in the barrier cover 34, referring to Figure 7 and Figure 8 , the air curtain cavity segment 12 is formed on the outer periphery of the barrier cover 34.

[0051] Among them, the smoke exhaust hood 3 is also provided with a smoke exhaust cavity 31 and a smoke exhaust fan 32.

[0052] On the basis of this structure, during assembly, first, the barrier cover 34 at the bottom end of the smoke exhaust hood 3 is aligned with the mounting port 17 at the top of the smoke collecting hood 1. Then, the barrier cover 34 is slowly extended into the cavity 10, and when the barrier cover 34 is completely extended into the cavity 10, the bottom of the barrier cover 34 is connected with the bottom wall of the cavity 10 by a detachable connection method (such as screw fixing, buckle connection, etc.), ensuring the stable position of the barrier cover 34 in the cavity 10, thereby forming independent smoke collecting cavity segment 11 and air curtain cavity segment 12.

[0053] When the range hood is started, the smoke exhaust fan 32 in the smoke exhaust cavity 31 starts to work to generate suction in the smoke collecting cavity segment 11. At this time, the oil fume generated by the stove rises to the smoke inlet 13 at the bottom end of the smoke collecting hood 1. Since the smoke collecting cavity segment 11 is surrounded by the barrier cover 34, the oil fume enters the smoke collecting cavity segment 11 inside the barrier cover 34 through the smoke inlet 13 under the action of the suction. Then, it flows along the channel of the smoke collecting cavity segment 11 to the smoke exhaust cavity 31, and is finally discharged to the outside.

[0054] At the same time, the fan corresponding to the air curtain cavity segment 12 also starts to work, air enters the air curtain cavity segment 12 from the air inlet 15 and flows in the air curtain cavity segment 12, and then is blown out from the air outlet 14 located between the outer periphery of the barrier cover 34 and the inner wall of the cavity 10 of the smoke collecting hood 1, forming a continuous air curtain around the smoke inlet 13. This air curtain restricts the oil fume to the area corresponding to the smoke collecting cavity segment 11 defined by the barrier cover 34, preventing it from spreading around.

[0055] Thus, the barrier cover 34 is connected only with the bottom wall of the cavity 10, reducing the connection positions that need to be sealed or have air leakage. By enhancing the connection strength and sealing performance of the barrier cover 34 and the mounting opening 17, when the range hood body vibrates due to the operation of the fan or other reasons, the barrier cover 34 can be ensured to be stably mounted at the mounting opening 17 and cannot be loosened or displaced. In this way, the separation state of the smoke collecting cavity section 11 and the air curtain cavity section 12 defined by the barrier cover 34 can be kept stable.

[0056] In this way, the barrier cover 34 is arranged to make the airflow paths of the smoke collecting cavity section 11 and the air curtain cavity section 12 independent of each other. The airflow of the smoke collecting cavity section 11 is unidirectional flow from the smoke inlet 13 to the direction of the smoke exhaust cover 3, which helps to reduce the disordered diffusion of the oil fume in the smoke collecting cover 1 and improve the adsorption efficiency of the oil fume. The airflow of the air curtain cavity section 12 enters from the air inlet 15 and is blown out from the air outlet 14 to form an air curtain. This independence avoids the mutual interference of the airflows of the two cavity sections and ensures the effective play of their respective functions.

[0057] Further, the barrier plate section 33 is a flat plate, and the flat plate is inclined from its lower end to its upper end to gradually approach the smoke collecting cavity section 11.

[0058] When one or two barrier plate sections 33 are used, the inclined arrangement of the flat plate can guide the oil fume at the smoke inlet 13 to flow more concentratedly toward the smoke collecting cavity section 11 and the smoke exhaust cover 3 during the rising process, reducing the disordered diffusion of the oil fume at the bottom of the smoke collecting cover 1 and improving the adsorption capacity of the oil fume.

[0059] When the smoke collecting cover 1 is used, the inner diameter of the bottom opening of the smoke collecting cover 1 gradually decreases from bottom to top. During the rising process of the oil fume, the larger opening at the bottom can cover a larger cooking area, ensuring that more oil fume can be captured. As the oil fume rises, the opening gradually decreases, so that the oil fume is gradually gathered during the rising process. Thus, the rising speed of the oil fume is accelerated, and the oil fume enters the smoke collecting cavity section 11 and is discharged more quickly.

[0060] Further, the barrier plate section 33 is integrally formed on the smoke exhaust cover 3.

[0061] Specifically, when the smoke exhaust cover 3 is made of metal materials such as stainless steel and aluminum alloy, the barrier plate section 33 can be integrally formed on the smoke exhaust cover 3 by stamping forming. When the smoke exhaust cover 3 is made of plastic materials, the integrally formed barrier plate section 33 and the smoke exhaust cover 3 can be achieved by injection molding process.

[0062] Thus, the integrally formed barrier plate section 33 and the smoke exhaust cover 3 become a coherent whole structure without connection gaps or weak links. Since there is no connection gap, the problem of oil fume leakage in the smoke exhaust cavity 31 is avoided.

[0063] Further, the cavity 10 is provided with a groove, and the peripheral edge of the barrier plate segment 33 is provided with a protruding edge, wherein the protruding edge is detachably inserted into the groove.

[0064] On this basis, the groove is continuously arranged on the two side walls and the lower end wall of the cavity 10. When assembling the range hood, the protruding edge of the barrier plate segment 33 is aligned with the groove of the two side walls and the lower end wall of the cavity 10. First, one end of the protruding edge is inserted into the starting position of the groove, and then the entire protruding edge is gradually inserted into the groove along the path of the groove, so that the barrier plate segment 33 is firmly installed in the cavity 10, and the barrier plate segment 33 separates the cavity 10 into the smoke collecting cavity segment 11 and the air curtain cavity segment 12. When cleaning or repairing the range hood is needed, the user can pull out the barrier plate segment 33 from the groove.

[0065] Thus, the detachable arrangement of the barrier plate segment 33 and the cavity 10 greatly facilitates the cleaning work of the range hood. Since the oil fume is mainly concentrated in the smoke collecting cavity segment 11, a large amount of oil stains will accumulate after long-term use. By detaching the barrier plate segment 33, each corner inside the smoke collecting cavity segment 11 can be cleaned more directly.

[0066] In addition, during the operation of the range hood, both the suction force of the smoke collecting cavity segment 11 and the air pressure of the air curtain cavity segment 12 can generate a force on the barrier plate segment 33. The close cooperation of the protruding edge and the groove can effectively resist these forces and prevent the barrier plate segment 33 from shifting during work, ensuring the stable separation of the smoke collecting cavity segment 11 and the air curtain cavity segment 12. The cooperation of the continuous groove and the protruding edge can also provide good sealing, which can effectively prevent oil fume from entering the air curtain cavity segment 12 from the smoke collecting cavity segment 11.

[0067] In some embodiments, the outer periphery of the barrier plate segment 33 is provided with an elastic pad, and the elastic pad is used to be deformed by being squeezed when the barrier plate segment 33 is assembled with the cavity 10, so as to seal the gap between the barrier plate and the cavity 10.

[0068] The elastic pad can be a sponge pad, a silica gel pad, etc., which is arranged on the outer periphery of the protruding edge, or the elastic pad is formed as the protruding edge.

[0069] Thus, after the protruding edge of the barrier plate segment 33 is inserted into the groove in the cavity 10, the elastic pad is deformed by being squeezed and filled in the gap between the barrier plate segment 33 and the side wall and the lower end wall of the cavity 10. Since the elastic pad closely adheres to the contact surface between the barrier plate segment 33 and the cavity 10, it can prevent oil fume or air from leaking from the gap.

[0070] In addition, the elastic pad can also play a role of buffering and shock absorption while sealing the gap. When the range hood is running, the vibration of the fan can be transmitted through the smoke collecting hood 1, causing noise. The elastic pad can absorb part of the vibration, reducing the transmission of vibration between the baffle section 33 and the cavity 10, thereby reducing the noise caused by vibration.

[0071] In other embodiments, the baffle section 33 is an elastic plate.

[0072] Specifically, the elastic plate can be a silica gel plate, a rubber plate, etc., which can better adapt to various assembly conditions when cooperating with the cavity 10. Even if there is a slight error in the size of the cavity 10 or the size changes due to temperature changes, slight deformation, etc. during use, the elastic plate can tightly fit the cavity 10 through its elastic deformation, ensuring the isolation effect of the smoke collecting cavity section 11 and the air curtain cavity section 12.

[0073] In addition, during the use of the range hood, it may be subjected to some accidental impact, such as accidental collision during cleaning or accidental impact of other objects in the kitchen. The elastic properties of the elastic plate enable it to withstand a certain degree of impact without being easily damaged or deformed. Compared with the rigid baffle plate, the elastic plate can disperse the impact force through elastic deformation when impacted, avoiding local stress from being too large to cause rupture or permanent deformation.

[0074] Further, referring to Figure 1 and Figure 2 , the bottom of the smoke collecting hood 1 is provided with an oil fume suction area 16, and the smoke inlet 13 communicates the oil fume suction area 16 with the smoke collecting cavity section 11. Referring to Figure 3 and Figure 4 , the air curtain cavity section 12 is arranged on both sides of the smoke collecting cavity section 11, and the air outlets 14 are arranged at the bottom ends of both sides of the smoke collecting hood 1. At the same time, the smoke collecting hood 1 is also provided with air inlets 15, and the air curtain cavity section 12 is provided with an air curtain fan 2. The air curtain fan 2 is used to guide the airflow to enter the air inlets 15 and be discharged through the air outlets 14 to form an air curtain on both sides of the oil fume suction area 16.

[0075] The air curtain fan 2 includes a mounting seat 22 and a fan 23, and the fan 23 is installed in the air curtain cavity section 12 through the mounting seat 22. When repairing or cleaning, the air curtain fan 2 can be completely disassembled by disassembling the mounting seat 22 and operated in a wider place.

[0076] Thus, by isolating the air curtain cavity section 12 from the smoke collecting cavity section 11 through the blocking plate section 33, and by the air curtain fan 2 guiding the airflow to form an air curtain on both sides of the oil fume suction area 16, the diffusion range of the oil fume can be effectively limited. The oil fume is limited in the space between the air curtain and the oil fume suction area 16, and can only move towards the direction of the smoke inlet 13. The fan of the smoke collecting cavity section 11 generates a negative pressure for suction of the oil fume, greatly improving the collection rate of the oil fume. Even if a large amount of oil fume is generated during cooking or external airflow interferes, the air curtain can prevent the oil fume from escaping to the side, ensuring the effect of the oil fume suction.

[0077] In addition, referring to Figure 6 The adjusting plate 21 can also be arranged in the smoke collecting hood 1, so as to further divide the air curtain cavity section 12 into a mounting cavity section 121 and a blocking cavity section 122. The air curtain fan 2 is arranged in the mounting cavity section 121, and the air outlet 14 is arranged at the bottom of the mounting cavity section 121, and the air inlet 15 is arranged on the side wall of the mounting cavity section 121.

[0078] It should be noted that the adjusting plate 21 can be used to appropriately adjust the width of the mounting cavity section 121, so as to optimize the airflow distribution when the air curtain fan 2 is working. When the width of the mounting cavity section 121 is relatively small, the flow rate of the airflow in the cavity section will be relatively fast, which is beneficial to forming a more powerful and concentrated air curtain at the air outlet 14.

[0079] If it is necessary to maintain or repair the air curtain fan 2, the space of the mounting cavity section 121 can be expanded by adjusting the adjusting plate 21, so as to provide a more spacious operation space for the maintenance personnel, and facilitate disassembly, inspection and replacement of the fan components.

[0080] In addition, during cooking, the heat generated by the stove will rise along with the oil fume into the smoke collecting cavity section 11. The blocking cavity section 122 can further block the smoke collecting cavity section 11 from the mounting cavity section 121, reduce the heat transferred from the smoke collecting cavity section 11 to the mounting cavity section 121, and avoid damage to the air curtain fan 2 caused by long-term exposure to a high-temperature environment.

[0081] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes technical solutions composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A range hood with a wind curtain, characterized by: The utility model relates to a smoke exhaust system, which comprises a smoke collecting hood and a smoke exhaust hood. The smoke exhaust hood comprises a barrier plate segment, which is installed in the mounting port and extends into the cavity. The barrier plate segment divides the cavity into a smoke collecting cavity segment and a wind curtain cavity segment.

2. The range hood with air curtain according to claim 1, characterized in that: The smoke collecting cavity segment is in communication with the smoke inlet and is used for adsorbing oil fume.

3. The range hood with air curtain according to claim 2, characterized in that: The wind curtain cavity segment is in communication with the air outlet and is used for forming a wind curtain on one side of the smoke inlet.

4. The range hood with air curtain according to claim 1, characterized in that: The bottom end of the smoke exhaust hood is provided with two barrier plate segments, which are oppositely arranged.

5. The range hood with air curtain according to any one of claims 1-4, characterized in that: The smoke collecting cavity segment is formed between the two barrier plate segments, and the wind curtain cavity segment is formed on the side of the barrier plate segment away from the smoke collecting cavity segment.

6. The range hood with air curtain according to any one of claims 1-4, characterized in that: The bottom end of the barrier plate segment is detachably connected with the bottom wall of the cavity.

7. The range hood with air curtain according to any one of claims 1-4, characterized in that: The bottom end of the smoke exhaust hood is provided with a barrier cover, which comprises at least three barrier plate segments.

8. The range hood with air curtain according to any one of claims 1-4, characterized in that: The barrier cover is installed in the mounting port and extends into the cavity.

9. The range hood with air curtain according to any one of claims 1-4, characterized in that: The bottom of the barrier cover is detachably connected with the bottom wall of the cavity.

10. The range hood with air curtain according to any one of claims 1-4, characterized in that: The smoke collecting cavity segment is formed in the barrier cover, and the wind curtain cavity segment is formed on the outer periphery of the barrier cover. The barrier plate segment is a flat plate, which is gradually inclined towards the smoke collecting cavity segment from the lower end to the upper end. The barrier plate segment is integrally formed on the smoke exhaust hood. The cavity is provided with a groove, and the barrier plate segment is provided with a protruding edge. The outer periphery of the barrier plate segment is provided with an elastic pad. The barrier plate segment is an elastic plate. The bottom of the smoke collecting hood is provided with an oil fume suction area. The smoke inlet is in communication with the oil fume suction area and the smoke collecting cavity segment. The wind curtain cavity segment is arranged on both sides of the smoke collecting cavity segment. The air outlet is arranged at the bottom end of the smoke collecting hood. The smoke exhaust system is further provided with an air inlet. The wind curtain cavity segment is provided with a wind curtain fan. The wind curtain fan is used for guiding airflow to enter the air inlet and be discharged through the air outlet to form a wind curtain on both sides of the oil fume suction area.

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