Range hood

Abstract

The application discloses a range hood, comprising an air suction module, a connecting pipe and a sealing element. The air suction module comprises a box body, the box body comprises a lower side plate, the lower side plate is provided with an air inlet and a groove surrounding the air inlet; the connecting pipe is connected with the lower side plate to communicate with the air inlet; the sealing element is arranged between the lower surface of the lower side plate and the connecting pipe, surrounds the air inlet, and abuts against the groove bottom and the groove wall. The application sets the groove on the lower side plate, the sealing element needs to abut against the groove bottom and the groove wall, the sealing element and the groove cooperatively form at least two abutting surfaces, the abutting surfaces are sequentially connected to integrally form a bending shape, the leakage path is greatly lengthened, the bending-shaped abutting surfaces can also form corners, so that the leakage of oil fume and oil stains is effectively blocked, and when sealing failure occurs in one of the abutting surfaces, the sealing effect of other abutting surfaces is not affected. In addition, the sealing element and the groove are cooperated, that is, the concave-convex cooperation between the sealing element and the groove is realized, so that the tightness of abutment is enhanced.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0002] A split-type range hood consists of separate exhaust and smoke collection modules. The exhaust module is positioned above the smoke collection module, and the two modules are connected by a connecting pipe to transport the cooking fumes. The exhaust module is connected to an exhaust duct to vent the fumes to the outside. A seal is installed between the exhaust module and the connecting pipe to prevent leakage of cooking fumes and grease at the connection point. In related technologies, the exhaust module includes a housing, and the connection between the housing and the connecting pipe is relatively flat. When a seal is installed between the housing and the connecting pipe, leakage can easily occur between the seal and the housing. Summary of the Invention

[0003] This application aims to at least partially solve the technical problems in the related art. To this end, this application proposes a range hood.

[0004] To achieve the above objectives, this application discloses a range hood, the range hood comprising: An exhaust module, the exhaust module including a housing, the housing including a lower side plate, the lower side plate having an air inlet and a groove surrounding the air inlet; A connecting pipe is connected to the lower side plate to communicate with the air inlet; and A sealing element is disposed between the lower surface of the lower side plate and the connecting pipe, surrounds the air inlet, and abuts against the bottom and wall of the groove.

[0005] In some embodiments of this application, the lower side plate is provided with a raised portion adjacent to the groove wall, and the sealing member also abuts against the raised portion.

[0006] In some embodiments of this application, the connecting pipe is provided with an exhaust port and a first annular rib surrounding the exhaust port, the exhaust port is connected to the air inlet, and the sealing member abuts against the first annular rib.

[0007] In some embodiments of this application, the first annular rib is disposed below the bottom of the groove.

[0008] In some embodiments of this application, the seal is provided with a first slot that opens toward the connecting pipe, and the first annular rib is inserted into the first slot to abut against the seal.

[0009] In some embodiments of this application, the connecting pipe is provided with a second annular rib surrounding the exhaust port, the second annular rib being located below the raised portion of the lower side plate, and the sealing member abutting against the second annular rib.

[0010] In some embodiments of this application, the seal is provided with a second slot that opens toward the connecting pipe, and the second annular rib is inserted into the second slot to abut against the seal.

[0011] In some embodiments of this application, an installation groove is formed between the first annular rib and the second annular rib, and the seal is inserted into the installation groove.

[0012] In some embodiments of this application, the seal is provided with a first protrusion and a second protrusion that are inserted into the mounting groove, the first protrusion and the second protrusion being arranged alternately along the radial direction of the exhaust port.

[0013] In some embodiments of this application, the first protrusion is in close contact with the first annular rib, and the second protrusion is in close contact with the second annular rib.

[0014] In some embodiments of this application, the first protrusion and the second protrusion respectively abut against the bottom of the mounting groove.

[0015] In some embodiments of this application, the seal is further provided with a third protrusion and a fourth protrusion, the third protrusion and the first protrusion forming a first slot, the first annular rib being inserted into the first slot, the fourth protrusion and the second protrusion forming a second slot, and the second annular rib being inserted into the second slot.

[0016] In some embodiments of this application, the third protrusion forms the inner side of the seal, the fourth protrusion forms the outer side of the seal, the degree to which the third protrusion protrudes toward the connecting pipe is less than the degree to which the first protrusion protrudes toward the connecting pipe, and the degree to which the fourth protrusion protrudes toward the connecting pipe is less than the degree to which the second protrusion protrudes toward the connecting pipe.

[0017] In some embodiments of this application, the groove forms a continuous first convex-concave structure along the radial direction of the air inlet, and the seal is provided with a continuous second convex-concave structure, wherein the first convex-concave structure and the second convex-concave structure are interlocked with each other.

[0018] In some embodiments of this application, the groove is connected to the air inlet and is adapted to collect oil stains and discharge them through the air inlet, and the side of the first annular rib facing away from the second annular rib is connected to the air inlet.

[0019] This technical solution involves creating a groove in the lower side plate of the exhaust module. After the lower side plate and connecting pipe are connected, the seal needs to abut against the bottom and wall of the groove. Since the bottom and wall of the groove are at a certain angle to each other, the seal and the groove cooperate to form at least two contact surfaces. These two contact surfaces together form a bent shape, which significantly extends the leakage path. The bent contact surfaces also form corners, effectively blocking the leakage of oil fumes and oil stains. When one contact surface fails to seal, it will not affect the sealing effect of the other contact surfaces. In addition, the seal and the groove cooperate, that is, a concave-convex fit can be achieved between the seal and the groove, thereby enhancing the tightness of the fit between the seal and the lower side plate.

[0020] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0021] 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 designs can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 These are schematic diagrams of range hoods in some embodiments of this application; Figure 2 Here are exploded views of the range hood in some embodiments of this application; Figure 3 for Figure 2 Enlarged view of the area indicated by the dashed line; Figure 4 for Figure 3 Enlarged view of the area indicated by the dashed line; Figure 5 This is a schematic diagram of the lower side panel in some embodiments of this application; Figure 6 This is a partial schematic diagram of the connecting pipe in some embodiments of this application; Figure 7 These are schematic diagrams of the seals in some embodiments of this application; Figure 8 This is a cross-sectional view of the seal in some embodiments of this application.

[0023] Explanation of icon numbers: Exhaust module 1000, housing 1100, first cavity 1200, lower side plate 1300, air inlet 1301, groove 1310, groove bottom 1311, groove wall 1312, raised part 1320. Connecting pipe 2000, exhaust port 2100, first annular rib 2200, second annular rib 2300, mounting groove 2400, groove bottom 2410; Smoke collection module 3000; Smoke exhaust duct 4000; Seal 5000, first slot 5100, first protrusion 5110, third protrusion 5120, second slot 5200, second protrusion 5210, fourth protrusion 5220.

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] 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.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0029] This application proposes a range hood, combining... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of this application, the range hood includes an exhaust module 1000, a connecting pipe 2000, and a sealing element 5000. The sealing element 5000 is disposed between the exhaust module 1000 and the connecting pipe 2000. The exhaust module 1000 is provided with a groove 1310. The sealing element 5000 needs to cooperate with the groove 1310 to enhance the sealing between the sealing element 5000 and the exhaust module 1000.

[0030] Specifically, the exhaust module 1000 is suitable for cooperation with the connecting pipe 2000 and the smoke collection module 3000 to form a range hood. The main function of the smoke collection module 3000 is to gather and collect oil fumes, the function of the connecting pipe 2000 is to transmit oil fumes, and the main function of the exhaust module 1000 is to create negative pressure, thereby providing power for the flow of oil fumes and realizing the suction of oil fumes. The smoke collection module 3000 forms a hollow cavity, in which oil fumes are easily gathered and then conveniently sucked away by the exhaust module 1000 through the connecting pipe 2000. The exhaust module 1000 contains a fan, which includes a volute, a fan wheel set in the volute, and a motor driven by the fan wheel. The operation of the fan creates negative pressure, thereby realizing the suction of oil fumes. The smoke collection module 3000 and the exhaust module 1000 are two separate components, connected by a connecting pipe 2000 to transfer cooking fumes. This means that this type of fume extraction system has a split structure. The exhaust module 1000 can be placed inside the kitchen ceiling, above the connecting pipe 2000 and the smoke collection module 3000. Since the kitchen ceiling is a relatively sealed space, it effectively reduces the noise emitted by the exhaust module 1000. The separation of the exhaust module 1000 from the smoke collection module 3000 also frees up space at the front of the smoke collection module 3000, reducing the impact of the exhaust module 1000's size on the overall shape of the smoke collection module 3000. It is understood that the cooking fumes referred to in this article are a gaseous mixture produced during cooking, containing air, water vapor, and various organic compounds.

[0031] The exhaust module 1000 is connected to the connecting pipe 2000. When the exhaust module 1000 is operating, the fumes enter the connecting pipe 2000 through the smoke collection module 3000, and then enter the exhaust module 1000. Finally, the fumes are discharged to the outside through the exhaust pipe 4000 connected to the exhaust module 1000. During the operation of the exhaust module 1000, oil mist particles in the fumes adhere to the structures along the flow path, forming oil stains. If these oil stains accumulate in the exhaust module 1000, it will affect the normal operation of the exhaust module. To prevent oil stains from accumulating in the exhaust module 1000, the oil stains flow into the connecting pipe 2000 and then into the smoke collection module 3000. It is understood that the range hood is equipped with an oil collection device located in the smoke collection module 3000. The oil stains flowing through the connecting pipe 2000 can flow to the oil collection device and be collected for user disposal.

[0032] Since the exhaust module 1000 and the connecting pipe 2000 are connected, leakage is likely to occur when oil flows through the connection point. Additionally, when fumes flow from the connecting pipe 2000 into the exhaust module 1000, leakage is also likely to occur at the connection point. Therefore, a sealing element 5000 needs to be installed at the connection point to enhance the sealing performance between the exhaust module 1000 and the connecting pipe 2000. The specific design of the sealing element 5000 is as follows: The exhaust module 1000 includes a housing 1100, which is mainly used to house the fan. Therefore, the housing 1100 needs to have a hollow structure to allow the fan to be installed inside. For example, combined with... Figure 1 , Figure 2 and Figure 5 As shown, the housing 1100 has a flat cubic structure with six side panels: an upper side panel, a lower side panel 1300, a front side panel, a rear side panel, a left side panel, and a right side panel. The lower side panel 1300 has an air inlet 1301. The connecting pipe 2000 and the exhaust module 1000 are connected to the lower side panel 1300 of the housing 1100, communicating with the air inlet 1301. The air inlet 1301 is used to connect the inside of the housing 1100 with the outside. The fumes transmitted by the connecting pipe 2000 enter the interior of the housing 1100 through the air inlet 1301 and are then exhausted by the fan. The upper side panel, lower side panel 1300, front side panel, rear side panel, left side panel, and right side panel together form a first cavity 1200, in which the fan can be installed.

[0033] The lower side plate 1300 is provided with a groove 1310, for example, see Figure 3 and Figure 4 As shown, the groove 1310 is recessed downwards from the upper surface of the lower side plate 1300, thus forming the groove 1310. The groove 1310 needs to be designed to surround the air inlet 1301. The connecting pipe 2000 is connected to the lower side plate 1300. The connecting pipe 2000 extends downwards from the lower side plate 1300 to connect with the smoke collection module 3000. After the connecting pipe 2000 and the lower side plate 1300 are connected, a connection point will be formed between them. It can be understood that in order to effectively fix the connecting pipe 2000 and the lower side plate 1300, the connection point formed by the connecting pipe 2000 and the lower side plate 1300 also surrounds the air inlet 1301. At the connection between the connecting pipe 2000 and the lower side plate 1300, a sealing element 5000 is provided between the connecting pipe 2000 and the lower side plate 1300. The sealing element 5000 needs to cooperate with the groove 1310, and is located below the groove 1310, specifically cooperating with the bottom 1311 and the wall 1312 of the groove 1310. It can be understood that the sealing element 5000 is made of an elastically deformable material, such as a rubber part. When the connecting pipe 2000 and the lower side plate 1300 are connected, the sealing element 5000 can be clamped, and the sealing element 5000 can fit tightly against the bottom 1311 and the wall 1312 of the groove 1310.

[0034] Because the bottom 1311 and the wall 1312 of the groove 1310 intersect at a certain angle, the seal 5000 can form contact surfaces with the wall 1312 and the bottom 1311 respectively. The contact surface formed by the seal 5000 and the wall 1312 also intersects with the contact surface formed by the seal 5000 and the bottom 1311 at a certain angle. In this way, these two adjacent contact surfaces form a bent structure, which is equivalent to extending the leakage path of oil fumes and oil stains, thereby enhancing the sealing effect. When a certain angle is formed between adjacent contact surfaces, a corner will be formed between the adjacent contact surfaces. If oil fumes and oil stains enter the contact surfaces and flow, the formation of the corner can further hinder the flow of oil fumes and oil stains. Furthermore, since the seal 5000 and the groove 1310 cooperate to form multiple (at least two) mating surfaces, even if the sealing effect of one mating surface is weakened along the leakage direction of oil fumes and oil stains, the sealing effect of other adjacent mating surfaces is not easily affected because the adjacent mating surfaces are at a certain angle, thus ensuring sealing stability.

[0035] It is worth noting that when the seal 5000 needs to mate with the groove 1310, a convex-concave fit can be formed between the seal 5000 and the groove 1310, which can enhance the tightness between the seal 5000 and the groove 1310. Furthermore, similar to the groove 1310, the seal 5000 is also designed to surround the air inlet 1301, such as... Figure 7 As shown, this ensures that the air inlet 1301 is effectively sealed in all directions.

[0036] The technical solution of this application provides a groove 1310 in the lower side plate 1300 of the exhaust module 1000. After the lower side plate 1300 is connected to the connecting pipe 2000, the sealing element 5000 needs to abut against the bottom 1311 and the wall 1312 of the groove 1310. Since the bottom 1311 and the wall 1312 of the groove 1310 are at a certain angle to each other, the sealing element 5000 and the groove 1310 cooperate to form at least two mating surfaces. These two mating surfaces are bent as a whole, which significantly extends the leakage path. The bent mating surfaces can also form corners, effectively blocking the leakage of oil fumes and oil stains. When one mating surface fails to seal, it is not easy to affect the sealing effect of the other mating surfaces. In addition, the sealing element 5000 and the groove 1310 cooperate, that is, the sealing element 5000 and the groove 1310 can achieve a concave-convex fit, thereby enhancing the tightness of the fit between the sealing element 5000 and the lower side plate 1300.

[0037] To further enhance the sealing performance between the seal 5000 and the lower side plate 1300, combined with Figure 4 As shown, in some embodiments of this application, the lower side plate 1300 is further provided with a raised portion 1320, which is connected to the groove wall 1312. For example, the lower side plate 1300 is a sheet metal part with a certain degree of extensibility. The groove 1310 is manufactured by stamping process, and the groove 1310 can be directly stamped on the lower side plate 1300. At this time, raised portions 1320 are formed on both sides of the groove 1310. That is to say, when the groove 1310 is formed on the connecting pipe 2000, the raised portions 1320 can be formed relative to the groove 1310 without any change on both sides of the groove 1310. It is understandable that the raised portion 1320 is relative to the groove 1310, and the groove 1310 needs to have a certain amount of space to accommodate it. This means that there is also a certain angle between the raised portion 1320 and the groove wall 1312 of the groove 1310. The seal 5000 is designed to also abut against the raised portion 1320. In this way, a contact surface is also formed between the raised portion 1320 and the seal 5000, and this contact surface and the adjacent contact surface form a certain angle. This can further extend the leakage path, increase the corner of the contact surface, and further enhance the sealing effect.

[0038] Combination Figure 4 and Figure 6As shown, in some embodiments of this application, an exhaust port 2100 is provided on the connecting pipe 2000. The exhaust port 2100 is designed to transport the oil fumes in the connecting pipe 2000 into the box 1100. The exhaust port 2100 needs to be designed to be connected to the air inlet 1301. The connection between the air inlet 1301 and the exhaust port 2100 means that the oil fumes can flow out of the connecting pipe 2000 and enter the box 1100. There are various ways to connect them, as long as the smooth flow of oil fumes can be achieved. A first annular rib 2200 is provided on the connecting pipe 2000, surrounding the exhaust port 2100. The first annular rib 2200 is a structure that protrudes towards the exhaust module 1000. Therefore, when the first annular rib 2200 abuts against the seal 5000, it can generate greater pressure on the seal 5000, thereby achieving a more effective seal between the seal 5000 and the first annular rib 2200. The sides of the first annular rib 2200 are positioned lower than the first annular rib 2200, so that when oil flows, it will be blocked by the first annular rib 2200 under the action of gravity. This effectively blocks oil and prevents oil from covering the contact surface between the first annular rib 2200 and the seal 5000 for a long time, reducing the risk of leakage.

[0039] Optionally, combined Figure 4 As shown, in some embodiments of this application, the first annular rib 2200 is disposed below the groove bottom 1311. When the connecting pipe 2000 and the lower side plate 1300 are connected to each other, the first annular rib 2200 forces the sealing member 5000 to press against the groove bottom 1311 of the groove 1310. Since the first annular rib 2200 can generate greater pressure on the sealing member 5000, it can tightly press the sealing member 5000 against the groove bottom 1311 of the groove 1310, thereby further strengthening the sealing effect between the groove bottom 1311 of the groove 1310 and the sealing member 5000.

[0040] Combination Figure 4 and Figure 8As shown, in some embodiments of this application, the sealing member 5000 is provided with a first slot 5100, and the first annular rib 2200 is inserted into the first slot 5100. This allows for the positioning of the sealing member 5000 and the connecting pipe 2000. When the sealing member 5000 and the connecting pipe 2000 are positioned, the position of the sealing member 5000 relative to the lower side plate 1300 is also relatively fixed. Specifically, the first slot 5100 is open towards the connecting pipe 2000, and the sealing member 5000 can be fitted onto the first annular rib 2200 from top to bottom, thus preventing displacement of the sealing member 5000. Furthermore, when the first annular rib 2200 is inserted into the first slot 5100, the contact area between the first slot 5100 and the first annular rib 2200 is also increased, and the contact surface formed between the first slot 5100 and the first annular rib 2200 constitutes a bent structure, such as... Figure 4 and Figure 8 The mating surface formed between the first slot 5100 and the first annular rib 2200 is an inverted U-shaped structure, which can further extend the leakage path and enhance the sealing effect between the seal 5000 and the connecting pipe 2000.

[0041] When the seal 5000 is still against the raised part 1320, that is, along the radial direction of the air inlet 1301 ( Figure 1 (As shown in the front, back, left, and right directions), the sealing element 5000 has a certain size. In order to enhance the sealing effect between the raised part 1320, the sealing element 5000 and the connecting pipe 2000, a second annular rib 2300 is also provided on the connecting pipe 2000. The second annular rib 2300 surrounds the exhaust port 2100. Similar to the first annular rib 2200, the second annular rib 2300 has a structure that protrudes towards the exhaust module 1000. Therefore, when the second annular rib 2300 and the sealing element 5000 come into contact, a greater pressure can be generated, thereby achieving an effective seal between the sealing element 5000 and the second annular rib 2300. Because the second annular rib 2300 is positioned below the raised portion 1320, when the connecting pipe 2000 and the lower side plate 1300 are connected to each other, the second annular rib 2300 forces the seal 5000 to press against the raised portion 1320. Since the second annular rib 2300 can exert greater pressure on the seal 5000, it can tightly compress the seal 5000 against the raised portion 1320, thus further strengthening the sealing effect between the raised portion 1320 and the seal 5000. Along the radial direction of the air inlet 1301, this ensures that both sides (inner and outer sides) of the seal 5000 are effectively sealed, greatly enhancing the sealing effect.

[0042] As mentioned earlier, the seal 5000 has certain dimensions along the radial direction of the air inlet 1301. In order to achieve more effective positioning of the seal 5000, combined with... Figure 4 and Figure 8 As shown, in some embodiments of this application, the sealing member 5000 is provided with a second slot 5200, and the second annular rib 2300 is inserted into the second slot 5200. This allows for the positioning of the sealing member 5000 and the connecting pipe 2000. When the sealing member 5000 and the connecting pipe 2000 are positioned, the position of the sealing member 5000 relative to the lower side plate 1300 is also relatively fixed. Specifically, the second slot 5200 is open towards the connecting pipe 2000, and the sealing member 5000 can be fitted onto the second annular rib 2300 from top to bottom, thus preventing displacement of the sealing member 5000. Furthermore, when the second annular rib 2300 is inserted into the second slot 5200, the contact area between the second slot 5200 and the second annular rib 2300 is also increased, and the contact surface formed between the second slot 5200 and the second annular rib 2300 constitutes a bent structure, such as... Figure 4 and Figure 8 The mating surface formed between the second slot 5200 and the second annular rib 2300 shown is an inverted U-shaped structure, which can further extend the leakage path and improve the sealing effect.

[0043] Combination Figure 4 and Figure 6 As shown, in some embodiments of this application, a mounting groove 2400 is formed between the second annular rib 2300 and the first annular rib 2200, and the seal 5000 can be inserted into the mounting groove 2400, thereby further positioning the seal 5000.

[0044] Optionally, in some embodiments, combined with Figure 4 and Figure 8As shown, the portion of the seal 5000 inserted into the mounting groove 2400 includes a second protrusion 5210 and a first protrusion 5110. The second protrusion 5210 and the first protrusion 5110 are arranged alternately along the radial direction of the exhaust port 2100. This saves material on the seal 5000 and forms two sealing lines, enhancing the sealing effect. For example, the first annular rib 2200 can be designed to fit tightly against the first protrusion 5110, forming a mating surface between them, thus enhancing the sealing effect. Similarly, the second annular rib 2300 can be designed to fit tightly against the second protrusion 5210, also forming a mating surface between them, further enhancing the sealing effect. Alternatively, the second protrusion 5210 and the first protrusion 5110 can be designed to abut against the bottom 2410 of the mounting groove 2400. Since the first annular rib 2200 and the second annular rib 2300 are a certain distance apart, the sealing effect between the corresponding sealing element 5000 and the lower side plate 1300 will be weakened due to the lack of support. Therefore, by designing the second protrusion 5210 and the first protrusion 5110 to abut against the bottom 2410 of the mounting groove 2400, the support for the sealing element 5000 can be strengthened while ensuring the sealing effect, thereby strengthening the seal between the sealing element 5000 and the lower side plate 1300.

[0045] Optionally, continue to combine Figure 4 and Figure 8 As shown, the seal 5000 is provided with a third protrusion 5120 and a fourth protrusion 5220. The first protrusion 5110 and the third protrusion 5120 form a first slot 5100, and the second protrusion 5210 and the fourth protrusion 5220 form a second slot 5200. The first slot 5100 is for the insertion of the first annular rib 2200, and the second slot 5200 is for the insertion of the second annular rib 2300. That is to say, the sidewall of the first slot 5100 is the first protrusion 5110 and the third protrusion 5120, and the sidewall of the second slot 5200 is the second protrusion 5210 and the fourth protrusion 5220. The functions of the first slot 5100 and the second slot 5200 are described above and will not be repeated.

[0046] Combination Figure 4As shown, in order to control the size of the seal 5000, the third protrusion 5120 is designed as the inner side of the seal 5000, and the fourth protrusion 5220 is designed as the outer side of the seal 5000. It can be understood that since the seal 5000 needs to surround the air inlet 1301, the seal 5000 is in a ring shape as a whole, thus having an inner side and an outer side. In this case, the downward protrusion of the third protrusion 5120 is less than that of the first protrusion 5110, and the downward protrusion of the fourth protrusion 5220 is also less than that of the second protrusion 5210. Since the third protrusion 5120 and the fourth protrusion 5220 constitute the inner and outer sides of the seal 5000, they are prone to warping because they are located on the inner and outer sides. In this solution, the third protrusion 5120 and the fourth protrusion 5220 are designed to be shorter, thus reducing their downward protrusion. This can minimize warping while ensuring the sealing effect, improve the durability of the seal, and prevent the seal from failing after long-term use of the range hood.

[0047] In some embodiments of this application, along the radial direction of the air inlet 1301, the groove 1310 can form a continuous first concave-convex structure, and the seal 5000 also forms a corresponding second concave-convex structure. By interlocking the second concave-convex structure and the first concave-convex structure, multiple contact surfaces can be formed between the seal 5000 and the lower side plate 1300. The multiple contact surfaces constitute multiple bends, which further extend the sealing path and enhance the sealing effect.

[0048] During operation, the exhaust module 1000 generates oil stains, which accumulate on almost all surfaces inside the module. Under gravity, the oil moves downwards and gradually flows to the lower side plate 1300. To prevent oil buildup on the lower side plate 1300 and its impact on the normal smoke extraction function, the oil on the lower side plate 1300 needs to be drained into the connecting pipe 2000. The oil flowing from the lower side plate 1300 into the connecting pipe 2000 flows from top to bottom, while the smoke in the connecting pipe 2000 flows from bottom to top. In other words, the flow direction of the oil is opposite to the flow direction of the smoke. The moment the fumes leave the lower side panel 1300 and enter the connecting pipe 2000, the grease creates wind resistance. To facilitate the flow of grease down the lower side panel 1300, the groove 1310 is designed to collect grease. When the grease from the exhaust module 1000 flows downwards, it gathers in the groove 1310, which is connected to the air inlet 1301. The grease flows into the connecting pipe 2000 through this connection, resulting in a more concentrated discharge of grease. A large amount of grease flows down through the connection between the groove 1310 and the air inlet 1301, thus reducing the wind resistance. If the grease flows in a dispersed manner, some areas with less grease are more susceptible to wind resistance and cannot flow smoothly. Therefore, by designing the groove 1310 to receive and discharge oil from the exhaust module 1000, the oil from the exhaust module 1000 is discharged more centrally, preventing the oil from flowing freely and reducing discharge efficiency. Thus, by setting the groove 1310, both the sealing effect between the groove and the seal 5000 and the oil discharge are enhanced, while also efficiently discharging oil.

[0049] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A range hood, characterized in that, include: An exhaust module, the exhaust module including a housing, the housing including a lower side plate, the lower side plate having an air inlet and a groove surrounding the air inlet; A connecting pipe is connected to the lower side plate to communicate with the air inlet; and A sealing element is disposed between the lower surface of the lower side plate and the connecting pipe, surrounds the air inlet, and abuts against the bottom and wall of the groove. The lower side plate is provided with a raised portion adjacent to the groove wall, and the sealing element also abuts against the raised portion; The connecting pipe is provided with an exhaust port and a first annular rib surrounding the exhaust port. The exhaust port is connected to the air inlet, and the sealing element abuts against the first annular rib. The first annular rib is located below the bottom of the groove; The sealing element is provided with a first slot that opens toward the connecting pipe, and the first annular rib is inserted into the first slot to abut against the sealing element; The connecting pipe is provided with a second annular rib around the exhaust port. The second annular rib is located below the raised part of the lower side plate, and the sealing member abuts against the second annular rib. The seal is provided with a second slot that opens toward the connecting pipe, and the second annular rib is inserted into the second slot to abut against the seal.

2. The range hood as described in claim 1, characterized in that, An installation groove is formed between the first annular rib and the second annular rib, and the seal is inserted into the installation groove.

3. The range hood as described in claim 2, characterized in that, The seal has a first protrusion and a second protrusion that are inserted into the mounting groove, and the first protrusion and the second protrusion are arranged alternately along the radial direction of the exhaust port.

4. The range hood as described in claim 3, characterized in that, The first protrusion is in close contact with the first annular rib, and the second protrusion is in close contact with the second annular rib; And / or, the first protrusion and the second protrusion respectively abut against the bottom of the mounting groove.

5. The range hood as described in claim 3, characterized in that, The seal also has a third protrusion and a fourth protrusion. The third protrusion and the first protrusion form a first slot, and the first annular rib is inserted into the first slot. The fourth protrusion and the second protrusion form a second slot, and the second annular rib is inserted into the second slot.

6. The range hood as described in claim 5, characterized in that, The third protrusion forms the inner side of the seal, and the fourth protrusion forms the outer side of the seal. The degree to which the third protrusion protrudes toward the connecting pipe is less than the degree to which the first protrusion protrudes toward the connecting pipe, and the degree to which the fourth protrusion protrudes toward the connecting pipe is less than the degree to which the second protrusion protrudes toward the connecting pipe.

7. The range hood as described in claim 1, characterized in that, Along the radial direction of the air inlet, the groove forms a continuous first concave-convex structure, and the seal has a continuous second concave-convex structure, with the first concave-convex structure and the second concave-convex structure interlocking with each other.

8. The range hood as described in claim 1, characterized in that, The groove is connected to the air inlet and is suitable for collecting oil stains and discharging them through the air inlet.

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