Range hood

Abstract

This application discloses a range hood, including an exhaust module and a connecting pipe. The exhaust module includes a housing with a lower side panel. The lower side panel has a first oil collection trough and a raised portion. The connecting pipe includes an upper adapter, which has an exhaust port, a second oil collection trough, and a connecting portion. The second oil collection trough is connected to both the first oil collection trough and the exhaust port. The connecting portion protrudes from the bottom of the second oil collection trough and connects to the raised portion. This technical solution, by providing a first oil collection trough and a raised portion on the lower side panel, makes it easier for oil from the exhaust module to accumulate in the first oil collection trough and less likely to accumulate on the raised portion. The upper adapter has a second oil collection trough and a connecting portion. The connecting portion has a raised structure relative to the bottom of the second oil collection trough. After the connecting portion connects to the raised portion, it is less likely for oil to accumulate or leak at the connection point between the connecting portion and the raised portion, thus avoiding oil accumulation or leakage at the connection between the exhaust module and the connecting pipe, and facilitating future disassembly and assembly.

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. During operation, grease accumulates in the exhaust module and flows downwards into the connecting pipe. Because the exhaust module and the connecting pipe are two separate components, grease leakage can easily occur at their connection point. 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:

[0005] The exhaust module includes a housing, the housing including a lower side plate, the lower side plate having a first oil collection groove and a raised portion; and

[0006] The connecting pipe includes an upper adapter, which has an exhaust port, a second oil collection tank, and a connecting part. The second oil collection tank is connected to the first oil collection tank and the exhaust port, and the connecting part protrudes from the bottom of the second oil collection tank to connect with the raised part.

[0007] In some embodiments of this application, the connecting portion includes a buckle, the raised portion is provided with a buckle hole, and the buckle passes through the buckle hole to engage with the raised portion.

[0008] In some embodiments of this application, the wall of the first oil collecting groove is connected to the raised portion, the wall of the first oil collecting groove is inclined, and the wall of the first oil collecting groove and the raised portion together surround the snap-fit ​​hole.

[0009] In some embodiments of this application, the connecting portion includes a boss, the boss having a first fastening hole, and the raised portion having a second fastening hole, the first fastening hole and the second fastening hole being adapted for fasteners to pass through for fixation.

[0010] In some embodiments of this application, the side of the range hood facing the user is called the front side, and the side away from the user is called the rear side, with the protrusions located on the left and right sides of the upper adapter.

[0011] In some embodiments of this application, the lower side plate is provided with an air inlet, the raised portion extends circumferentially along the air inlet, and the connecting portion includes a plurality of such portions, which are arranged at intervals around the exhaust port.

[0012] In some embodiments of this application, the raised portion includes a plurality of portions spaced apart, and a first oil outlet is formed between adjacent raised portions, which communicates with the air inlet and the first oil collection tank. The air inlet is connected to the second oil collection tank.

[0013] In some embodiments of this application, the first oil collection groove is located on the side of the raised portion away from the air inlet, and the raised portion forms the edge of the air inlet.

[0014] In some embodiments of this application, the first oil outlet is located above the second oil collection tank.

[0015] In some embodiments of this application, the air inlet is rectangular, and the first oil outlet is connected to the corner of the air inlet.

[0016] In some embodiments of this application, the lower side plate is provided with a guide surface located between the edge of the lower side plate and the first oil collection tank, and the guide surface is inclined to guide the oil sludge to the first oil collection tank.

[0017] In some embodiments of this application, the upper adapter and the lower surface of the lower side plate form a joint seam. The upper adapter is provided with a protrusion extending circumferentially along the exhaust port. The space on the side of the protrusion away from the exhaust port forms the second oil collection groove. The protrusion passes through the air inlet and protrudes into the housing.

[0018] In some embodiments of this application, the protrusion is positioned at a distance from the edge of the air inlet.

[0019] In some embodiments of this application, the protrusions include a plurality of protrusions spaced apart, and a second oil drain is formed between adjacent protrusions. The second oil drain connects the second oil collection tank and the exhaust port.

[0020] In some embodiments of this application, the protrusion is located at the edge of the exhaust vent.

[0021] In some embodiments of this application, the exhaust port is rectangular, and the second oil outlet is connected to the corner of the exhaust port.

[0022] The technical solution of this application provides a first oil collection trough and a raised portion on the lower side plate. Oil stains from the exhaust module easily accumulate in the first oil collection trough and are less likely to accumulate on the raised portion. The upper adapter is provided with a second oil collection trough and a connecting portion. The second oil collection trough is connected to the first oil collection trough, so the oil stains in the first oil collection trough will flow to the second oil collection trough. The second oil collection trough is connected to the exhaust port, so the oil stains flowing to the second oil collection trough flow to the exhaust port and then are discharged along the connecting pipe. The connecting portion has a raised structure relative to the bottom of the second oil collection trough. After the connecting portion is connected to the raised portion, it is not easy for oil stains to accumulate or leak at the connection between the connecting portion and the raised portion. While ensuring the connection between the exhaust module and the connecting pipe, the discharge of oil stains is realized, avoiding the accumulation or leakage of oil stains at the connection between the exhaust module and the connecting pipe, and making it easier to disassemble and assemble in the future.

[0023] 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

[0024] 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.

[0025] Figure 1 These are schematic diagrams of range hoods in some embodiments;

[0026] Figure 2 Cross-sectional views of the range hood in some embodiments;

[0027] Figure 3 for Figure 2 Enlarged view of the area shown by the dashed line (black dots in the image represent oil flow, the same below);

[0028] Figure 4 Cross-sectional views of the range hood in some embodiments;

[0029] Figure 5 for Figure 4 Enlarged view of the section indicated by the dashed line (fasteners are not shown);

[0030] Figure 6 This is a schematic diagram of the lower side panel in some embodiments;

[0031] Figure 7 This is a top view of the lower side panel in some embodiments;

[0032] Figure 8 for Figure 7 Sectional view of AA;

[0033] Figure 9 This is a schematic diagram of the upper adapter in some embodiments;

[0034] Figure 10 Top view of the upper adapter in some embodiments;

[0035] Figure 11 for Figure 10 BB section view;

[0036] Figure 12 These are partial schematic diagrams of the range hood in some embodiments;

[0037] Figure 13 for Figure 12 Enlarged view of the section indicated by the dashed line.

[0038] Explanation of icon numbers:

[0039] Exhaust module 1000, housing 1100, first cavity 1001, lower side plate 1200, air inlet 1210, first oil collection tank 1220, tank wall 1221, raised part 1230, snap hole 1231, second fastening hole 1232, first oil outlet 1240, guide surface 1250;

[0040] Connecting pipe 2000, upper adapter 2100, exhaust port 2110, protrusion 2120, second oil outlet 2130, second oil collection tank 2140, tank bottom 2141, sealing strip 2150, connecting part 2170, buckle 2171 (2170), boss 2172 (2170), first fastening hole 2173;

[0041] Smoke collection module 3000;

[0042] Smoke exhaust duct 4000.

[0043] 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

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] This application proposes a range hood, combining... Figures 1 to 4 As shown, the range hood includes an exhaust module 1000 and a connecting pipe 2000. The lower side plate 1200 of the exhaust module 1000 is provided with a raised portion 1230 and a first oil collection trough 1220. The connecting pipe 2000 is provided with a connecting portion 2170 and a second oil collection trough 2140. The oil mainly flows in the first oil collection trough 1220 and the second oil collection trough 2140. Since the raised portion 1230 is set higher than the first oil collection trough 1220, and the connecting portion 2170 is also set higher than the bottom 2141 of the second oil collection trough 2140, the exhaust module 1000 and the connecting pipe 2000 are connected to each other through the raised portion 1230 and the connecting portion 2170, and it is not easy for oil leakage and accumulation to occur at the connection point.

[0049] 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.

[0050] 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.

[0051] Since the exhaust module 1000 and the connecting pipe 2000 are connected, oil stains are prone to accumulate and leak when they flow through the connection between the exhaust module 1000 and the connecting pipe 2000. To solve this problem, the following solution is adopted.

[0052] 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 4 As shown, the housing 1100 has a flat cubic structure with six side panels: an upper side panel, a lower side panel 1200, a front side panel, a rear side panel, a left side panel, and a right side panel. The lower side panel 1200 has an air inlet 1210. The connecting pipe 2000 and the exhaust module 1000 are connected to the lower side panel 1200 of the housing 1100 and communicate with the air inlet 1210 of the lower side panel 1200. The fumes transmitted by the connecting pipe 2000 enter the interior of the housing 1100 through the air inlet 1210 and are then exhausted by the fan. The upper side panel, lower side panel 1200, front side panel, rear side panel, left side panel, and right side panel together form a first cavity 1001, in which the fan can be installed.

[0053] The fan is housed in the first cavity 1001 within the casing 1100. The volute housing accommodates the impeller, thus guiding the fumes. In this embodiment, the volute is placed horizontally, meaning its axial direction extends vertically, thereby reducing the overall thickness of the exhaust module 1000. The volute has a vent and an outlet. The rotation of the impeller draws the fumes entering the casing 1100 through the vent into the volute, and then discharges them through the outlet into the exhaust duct 4000.

[0054] As the fumes flow within the exhaust module 1000, oil stains form on the inner wall of the housing 1100, the volute, and the impeller. Under gravity, the oil stains flow downwards to the lower side plate 1200. To better guide the oil stains, a first oil collection trough 1220 is provided on the lower side plate 1200. The oil stains can flow to the first oil collection trough 1220 and be initially collected. It should be noted that the so-called first oil collection trough 1220 forms a certain amount of space to accommodate the oil stains (the same applies to the second oil collection trough 2140 mentioned below). In addition, a raised portion 1230 is provided on the lower side plate 1200. It can be understood that the so-called raised portion 1230 is raised relative to the first oil collection trough 1220. Therefore, the oil stains are less likely to flow on the raised portion 1230 and tend to flow towards the first oil collection trough 1220.

[0055] The connecting pipe 2000 includes an upper adapter 2100, which is a structure that connects to the lower side plate 1200 of the exhaust module 1000. The upper adapter 2100 is provided with a second oil collection tank 2140 and an exhaust port 2110. The second oil collection tank 2140 is configured to communicate with the first oil collection tank 1220, so that the oil in the first oil collection tank 1220 can flow into the second oil collection tank 2140, avoiding the accumulation of oil in the exhaust module 1000. In addition, the upper adapter 2100 is also provided with an exhaust port 2110, through which the oil fumes transported by the connecting pipe 2000 are discharged before entering the housing 1100. The exhaust vent 2110 is connected to the second oil collection tank 2140, so the oil collected in the second oil collection tank 2140 can be discharged through the connection between the second oil collection tank 2140 and the exhaust vent 2110. In order to connect the connecting pipe 2000 and the exhaust module 1000, a connecting part 2170 is provided at the bottom 2141 of the second oil collection tank 2140 of the connecting pipe 2000. The connecting part 2170 has a raised structure relative to the bottom 2141 of the second oil collection tank 2140. The connecting part 2170 and the raised part 1230 are connected to each other to fix the upper adapter 2100 and the lower side plate 1200. Because the raised portion 1230 is higher than the bottom of the first oil collecting tank 1220, oil stains are less likely to accumulate on its upper surface. Similarly, the top of the connecting portion 2170 is higher than the bottom 2141 of the second oil collecting tank 2140, making it less susceptible to oil contamination. Therefore, when the connecting portion 2170 and the raised portion 1230 are connected, oil stains are less likely to flow to the connection point, preventing accumulation and facilitating easier disassembly for later maintenance and cleaning. Furthermore, the connecting portion 2170 protrudes from the bottom 2141 of the second oil collecting tank 2140, reducing the risk of leakage even with through-holes. This allows for various connection methods between the connecting portion 2170 and the raised portion 1230, providing greater flexibility for different products.

[0056] As can be seen from the above, the technical solution of this application, by setting a first oil collection trough 1220 and a raised portion 1230 on the lower side plate 1200, makes it easy for oil stains from the exhaust module 1000 to concentrate in the first oil collection trough 1220 and not easily accumulate on the raised portion 1230. The upper adapter 2100 is provided with a second oil collection trough 2140 and a connecting portion 2170. The second oil collection trough 2140 is connected to the first oil collection trough 1220, so the oil stains in the first oil collection trough 1220 will flow to the second oil collection trough 2140. The second oil collection trough 2140 is connected to the exhaust port 2110, thereby allowing the oil to flow to the second oil collection trough 2140. The oil sludge from 140 flows to the exhaust port 2110 and then is discharged along the connecting pipe 2000. The connecting part 2170 has a raised structure relative to the bottom 2141 of the second oil collection tank 2140. After the connecting part 2170 is connected to the raised part 1230, it is not easy for oil sludge to accumulate or leak at the connection between the connecting part 2170 and the raised part 1230. While ensuring the connection between the exhaust module 1000 and the connecting pipe 2000, the discharge of oil sludge is realized, avoiding the accumulation or leakage of oil sludge at the connection between the exhaust module 1000 and the connecting pipe 2000, which facilitates future maintenance.

[0057] Combination Figure 3 , Figure 6 , Figure 9 and Figure 11 As shown, in some embodiments of this application, the connecting part 2170 includes a buckle 2171, and correspondingly, the raised part 1230 is provided with a corresponding buckle hole 1231. When it is necessary to connect the upper adapter 2100 and the lower side plate 1200, the buckle 2171 is aligned with the buckle hole 1231 and moved until the buckle 2171 is inserted into the buckle hole 1231. In this way, the buckle 2171 can hook around the periphery of the buckle hole 1231, that is, it is engaged with the raised part 1230. In this way, the initial positioning between the upper adapter 2100 and the lower side plate 1200 can be achieved, laying the foundation for subsequent further fastening operations.

[0058] Optionally, to facilitate the insertion of the buckle 2171 into the buckle hole 1231, combined with Figure 6As shown, in some embodiments of this application, the raised portion 1230 and the groove wall 1221 of the first oil collecting groove 1220 are in contact, that is, the raised portion 1230 and the groove wall 1221 of the first oil collecting groove 1220 are close to each other, and the groove wall 1221 of the first oil collecting groove 1220 is designed to be inclined. When the buckle 2171 moves toward the buckle hole 1231, since the upper adapter 2100 and the lower side plate 1200 both have certain dimensions, the operator may not be able to easily align the buckle 21 during operation. 71 and the snap-fit ​​hole 1231. Therefore, by utilizing the structure of the first oil collecting groove 1220, the groove wall 1221 of the first oil collecting groove 1220 plays a guiding role for the snap-fit ​​2171. The raised part 1230 and the groove wall 1221 of the first oil collecting groove 1220 together surround the snap-fit ​​hole 1231. In this way, when the snap-fit ​​2171 touches the groove wall 1221 of the first oil collecting groove 1220, it can slide into the snap-fit ​​hole 1231 during the guiding process, which is convenient and quick. This can make full use of the structure formed by the first oil collecting groove 1220.

[0059] Combination Figure 5 and Figure 9 As shown, in some embodiments of this application, the connecting portion 2170 includes a boss 2172. Alternatively, a buckle 2171 and a boss 2172 can be simultaneously provided. In this case, the buckle 2171 provides initial fixing and positioning, while the boss 2172 provides further tightening. Specifically, the boss 2172 is formed as a through-hole structure with a first fastening hole 2173, and the raised portion 1230 also has a through-hole structure with a second fastening hole 1232. The first fastening hole 2173 and the second fastening hole 1232 extend axially in the vertical direction. Thus, a fastener can be used to sequentially pass through the first fastening hole 2173 and the second fastening hole 1232 from bottom to top to fix the boss 2172 and the raised portion 1230 together. For example, the fastener is a screw; the screw passes through the first fastening hole 2173 and the second fastening hole 1232 to tighten and fix the boss 2172 and the raised portion 1230. With the pre-positioning and pre-fixing function of the buckle 2171, the upper adapter 2100 and the lower side plate 1200 can be effectively fixed by the fastening operation of the boss 2172 and the raised part 1230.

[0060] Optionally, combined Figure 9 As shown, in some embodiments of this application, the operation of the fastener passing through the first fastening hole 2173 and the second fastening hole 1232 is slightly more complex than the engagement of the snap fastener 2171 and the snap fastener hole 1231. To facilitate the operator's operation, the boss 2172 is provided on the left and right sides of the upper adapter 2100. For example, combined with Figure 4 and 9As shown, when the boss 2172 is located on the left and right sides, the operator has ample space to operate the fastener. Of course, the boss 2172 can also be located on the front and rear sides, but when the boss 2172 is located on the rear side, the rear side is close to the kitchen wall, and the operator may be easily obstructed by the wall when operating the fastener.

[0061] Optionally, in order to more effectively fix the connecting pipe 2000 and the exhaust module 1000, the lower side plate 1200 has an air inlet 1210. The air inlet 1210 allows the oil fumes in the connecting pipe 2000 to enter the housing 1100. The raised portion 1230 extends circumferentially along the air inlet 1210. That is, the raised portion 1230 is located circumferentially around the air inlet 1210 and can extend a certain length circumferentially. Correspondingly, the connecting portion 2170 includes multiple portions, and the multiple connecting portions 2170 are arranged around the exhaust port 2110. Along the circumferential direction of the exhaust port 2110, adjacent connecting portions 2170 are spaced apart by a certain distance. Through this arrangement, the circumferential direction of the air inlet 1210 and the circumferential direction of the exhaust port 2110 are effectively connected to the upper adapter 2100 and the lower side plate 1200. The connection effect is good, and pressure can be applied evenly in the circumferential direction, making it less likely for oil fumes and oil stains to leak. For example, see Figure 9 As shown, the connecting part 2170 includes a buckle 2171 and a boss 2172. The buckle 2171 is arranged at intervals along the circumference of the exhaust port 2110, while the boss 2172 is provided on the left and right sides of the exhaust port 2110.

[0062] Combination Figure 12 and Figure 13 As shown, in some embodiments of this application, by setting a first oil drain port 1240, the first oil collection tank 1220 and the air inlet 1210 are connected, so that the oil sludge is discharged to the air inlet 1210 in a more concentrated manner, avoiding the disorderly flow of oil sludge, thereby improving the discharge efficiency of oil sludge.

[0063] Understandably, when the exhaust module 1000 is working, it draws in cooking fumes through the connecting pipe 2000, combined with... Figure 1As shown, cooking fumes flow upwards through the connecting pipe 2000 into the exhaust module 1000, while oil sludge flowing from the exhaust module 1000 into the first oil collection tank 1220 flows downwards through the air inlet 1210 into the connecting pipe 2000. The flow direction of the oil sludge is opposite to that of the cooking fumes. The cooking fumes might cause the oil sludge to spread out, hindering its downward flow. However, by setting up the first oil drain port 1240, the oil sludge can be discharged more centrally, minimizing the impact of the cooking fumes on the oil sludge. Because the first oil drain port 1240 allows for more concentrated oil discharge, it can be placed in a location less affected by the flow of cooking fumes.

[0064] Furthermore, to facilitate the formation of the first oil outlet 1240, multiple raised portions 1230 are provided, with a certain distance between adjacent raised portions 1230, thus forming the first oil outlet 1240. Since the first oil outlet 1240 is formed between adjacent raised portions 1230, the first oil outlet 1240 is configured as an upward-opening structure, which reduces the manufacturing difficulty of the first oil outlet 1240, and the first oil outlet 1240 can be formed without drilling.

[0065] To further simplify the structure of the lower side panel 1200, the raised portion 1230 is designed as the edge of the air inlet 1210. The first oil collection groove 1220 is located on the side of the raised portion 1230 away from the air inlet 1210. That is, multiple raised portions 1230 are arranged around the air inlet 1210 and form the edge of the air inlet 1210. In this way, the first oil discharge port 1240 formed between adjacent raised portions 1230 is directly connected to the air inlet 1210, so that the oil discharged from the first oil discharge port 1240 can directly enter the air inlet 1210 without the need for an additional connecting structure. The raised portion 1230 is designed as the edge of the air inlet 1210, so that no additional extension structure is needed within the area enclosed by multiple raised portions 1230. This allows the air inlet 1210 to have a larger area as much as possible, increasing the throughput of oil fumes.

[0066] Combination Figure 12 and Figure 13 As shown, in order to facilitate the flow of oil from the first oil collection tank 1220 to the second oil collection tank 2140, the first oil outlet 1240 is positioned above the second oil collection tank 2140. When the oil flows out from the first oil outlet 1240, it can pass through the air inlet 1210 and fall into the second oil collection tank 2140. This makes it easier to discharge the oil from the first oil collection tank 1220 without the need for additional connecting structures or drilling operations in the first oil collection tank 1220.

[0067] Optionally, in some embodiments of this application, combined with Figure 6 As shown, the air inlet 1210 is set in a rectangular shape, which is approximately rectangular, so that the air inlet 1210 has corners. The corners of the air inlet 1210 are less affected by the flow of oil fumes. That is to say, the oil flowing out of the corners of the air inlet 1210 is less affected by oil fumes. Therefore, by setting the first oil outlet 1240 at the corner of the air inlet 1210 and connecting it with the corner of the air inlet 1210, when the oil in the first oil collection tank 1220 flows to the first oil outlet 1240, it flows downward through the corner of the air inlet 1210. In this way, it is less affected by oil fumes, which facilitates the downward flow of oil in the first oil collection tank 1220 to the second oil collection tank 2140.

[0068] Optionally, when the exhaust module 1000 is working, oil stains will almost always form on the surface of its internal structure. To promote the flow of oil stains to the first oil collection tank 1220 and prevent oil stains from accumulating in some corners, combined with... Figures 6 to 8 As shown, in some embodiments of this application, the lower side plate 1200 is provided with a guide surface 1250, which is suitable for guiding oil stains. Specifically, the guide surface 1250 is disposed between the first oil collection tank 1220 and the edge of the lower side plate 1200, and the guide surface 1250 is inclined to a certain extent relative to the horizontal plane. This allows the guide surface 1250 to be made larger, thereby accommodating more oil stains. When oil stains flow to the guide surface 1250, they flow along the guide surface 1250 towards the first oil collection tank 1220. Due to the inclined arrangement of the guide surface 1250, almost all the oil stains falling on it can flow towards the first oil collection tank 1220, avoiding the accumulation of oil stains in a localized area of ​​the lower side plate 1200. For example, the angle α between the guide surface 1250 and the horizontal plane can be designed to be 5° to 15°, such as 5°, 8°, 12°, or 15°. See [reference needed]. Figure 8 As shown, while ensuring that the oil can flow to the first oil collection tank 1220, the lower side plate 1200 will not protrude too much from the lower part of the exhaust module 1000.

[0069] Combination Figure 3 and Figure 5As shown, in some embodiments of this application, when the upper adapter 2100 and the lower side plate 1200 are connected, a seam is formed between the lower surfaces of the upper adapter 2100 and the lower side plate 1200. That is, the seam is formed between the lower surfaces of the upper adapter 2100 and the lower side plate 1200. It can be understood that when two objects are connected, a gap is formed between them; this gap is the seam. Since the upper adapter 2100 is provided with an exhaust port 2110, the fumes in the connecting pipe 2000 can be output to the housing 1100 of the exhaust module 1000 through the exhaust port 2110. A protrusion 2120 is provided around the exhaust port 2110, extending a certain length along the circumference of the exhaust port 2110. (See [reference]). Figure 3 As shown, the so-called protrusion 2120 protrudes towards the exhaust module 1000, allowing it to pass through the air inlet 1210. The protrusion 2120 is designed to protrude into the housing 1100, specifically into the first cavity 1001. For example, see... Figure 3 The orientation shown makes the protrusion 2120 higher than the air inlet 1210, that is, the protrusion 2120 is higher than the edge of the air inlet 1210. The position where the fumes are transmitted from the connecting pipe 2000 and exit the exhaust port 2110 is higher than the air inlet 1210. Since a joint is formed between the connecting pipe 2000 and the lower surface of the lower side plate 1200 of the exhaust module 1000, in order to avoid leakage of fumes and oil stains, a joint is required between the upper adapter 2100 and the lower surface of the lower side plate 1200. To achieve a certain sealing requirement, a sealing strip 2150 is installed at the joint. In this embodiment, the protrusion 2120 passes through the air inlet 1210 and protrudes into the housing 1100, thus guiding the oil fumes towards the first cavity 1001. This prevents the oil fumes from impacting the joint between the upper adapter 2100 and the lower side plate 1200, reducing the impact of oil fumes on the sealing strip 2150 and preventing oil leakage, thereby lowering the sealing requirements at the joint. For example, the distance H between the protrusion 2120 and the air inlet 1210, where H is at least 3mm, further enhances the effect described above.

[0070] The oil flowing from the air inlet 1210 towards the connecting pipe 2000 flows from top to bottom into the connecting pipe 2000. Simultaneously, the oil fumes within the connecting pipe 2000 flow from bottom to top. In other words, the direction of the oil flow is opposite to the direction of the oil fume flow. The flow of oil fumes creates wind resistance on the oil entering the connecting pipe 2000 from the air inlet 1210, thus hindering the flow of oil and reducing the emission speed of oil from the exhaust module 1000. In this embodiment, because the second oil collection tank 2140 is located on the side of the protrusion 2120 opposite to the exhaust port 2110, and because the protrusion 2120 is inserted into and higher than the air inlet 1210, the oil fumes transmitted in the connecting pipe 2000 are less likely to affect the location of the second oil collection tank 2140. The oil flowing down from the air inlet 1210 can smoothly drip into the second oil collection tank 2140.

[0071] Combination Figure 3 As shown, in some embodiments of this application, the edge of the air inlet 1210 is designed to be spaced apart from the protrusion 2120. This means that the edge of the air inlet 1210 and the protrusion 2120 are not in contact; they are separated by a certain distance. In other words, the space on the side of the protrusion 2120 facing away from the exhaust port 2110 is exposed in the air inlet 1210. Some oil can flow into the upper connector 2100 through the space between the edge of the air inlet 1210 and the protrusion 2120. For example, oil dripping from the exhaust module 1000 can pass directly through this space. Furthermore, the edge of the air inlet 1210 and the protrusion 2120 are spaced apart to prevent them from contacting each other. If they do contact, oil stains are more likely to remain at the contact point, and this oil will more easily flow down the lower surface of the lower side plate 1200 to the joint between the upper adapter 2100 and the lower side plate 1200, increasing the risk of leakage. For example, a distance L between the protrusion 2120 and the edge of the air inlet 1210, with L being at least 3mm, is preferable.

[0072] In some embodiments of this application, combined with Figures 9 to 11 As shown, multiple protrusions 2120 are provided, and two adjacent protrusions 2120 are spaced a certain distance apart, thus forming a second oil outlet 2130. The second oil outlet 2130 is connected to the second oil collection tank 2140, so that the oil flowing to the second oil collection tank 2140 can flow into the exhaust port 2110 through the second oil outlet 2130, and then flow along the connecting pipe 2000.

[0073] In some embodiments, combined with Figure 11As shown, the protrusion 2120 is located at the edge of the exhaust vent 2110. Specifically, the protrusion 2120 is designed to extend upward from the edge of the exhaust vent 2110. This upward extension means it extends towards the location of the exhaust module 1000, causing the protrusion 2120 to protrude into the housing 1100 and be higher than the air inlet 1210. Thus, within the area enclosed by the protrusion 2120, no additional extension structure is needed, reducing the resistance to oil fume transmission and maximizing the exhaust vent 2110's outlet area to ensure sufficient airflow to the exhaust module 1000.

[0074] When the protrusion 2120 extends along the edge of the exhaust port 2110, oil can directly enter the exhaust port 2110 through the second oil drain port 2130 without the need for an additional guide structure. Since the second oil drain port 2130 is formed between adjacent protrusions 2120, it has an upward-opening structure, which reduces the manufacturing difficulty of the second oil drain port 2130, as it can be formed without the need for drilling.

[0075] Optionally, combined Figure 9 and Figure 10 As shown, in some embodiments of this application, the exhaust vent 2110 is set in a rectangular shape, which is approximately rectangular, so that the exhaust vent 2110 has corners. The corners of the exhaust vent 2110 are less affected by the flow of oil fumes. That is to say, the oil flowing out of the corners of the exhaust vent 2110 is less affected by oil fumes. Therefore, by setting the second oil outlet 2130 at the corner of the exhaust vent 2110 and communicating with the corner of the exhaust vent 2110, when the oil flows to the second oil outlet 2130, it flows downward through the corner of the exhaust vent 2110, which greatly reduces the degree of influence of oil fumes and facilitates the downward flow of oil in the upper adapter 2100.

[0076] When the exhaust vent 2110 is rectangular, multiple protrusions 2120 are arranged along the rectangle, with two protrusions 2120 located on opposite sides of the rectangle and the other two protrusions 2120 located on the other two opposite sides of the rectangle. A second oil drain 2130 is formed between two adjacent protrusions 2120 so as to communicate with the corner of the exhaust vent 2110.

[0077] 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: The exhaust module includes a housing, the housing includes a lower side plate, the lower side plate is provided with a first oil collection groove and a raised part, the raised part being raised relative to the first oil collection groove; as well as The connecting pipe includes an upper adapter, which has an exhaust port, a second oil collection tank, and a connecting part. The second oil collection tank is connected to the first oil collection tank and the exhaust port, and the connecting part protrudes from the bottom of the second oil collection tank to connect with the raised part.

2. The range hood as described in claim 1, characterized in that, The connecting part includes a buckle, and the raised part is provided with a buckle hole. The buckle passes through the buckle hole to engage with the raised part.

3. The range hood as described in claim 2, characterized in that, The wall of the first oil collecting trough is connected to the raised portion, the wall of the first oil collecting trough is inclined, and the wall of the first oil collecting trough and the raised portion together surround the snap-fit ​​hole.

4. The range hood as described in claim 1, characterized in that, The connecting portion includes a boss, the boss having a first fastening hole, and the raised portion having a second fastening hole. The first fastening hole and the second fastening hole are adapted for fasteners to pass through for fixing.

5. The range hood as described in claim 4, characterized in that, With the side of the range hood facing the user as the front side and the side away from the user as the rear side, the protrusions are located on the left and right sides of the upper adapter.

6. The range hood according to any one of claims 1 to 5, characterized in that, The lower side plate is provided with an air inlet, the raised portion extends circumferentially along the air inlet, and the connecting portion includes multiple portions, which are arranged at intervals around the exhaust port.

7. The range hood as described in claim 6, characterized in that, The raised portion includes a plurality of spaced portions, and a first oil outlet is formed between adjacent raised portions, which communicates with the air inlet and the first oil collection tank. The air inlet is connected to the second oil collection tank.

8. The range hood as described in claim 7, characterized in that, The first oil collection groove is located on the side of the raised portion away from the air inlet, and the raised portion forms the edge of the air inlet.

9. The range hood as described in claim 7, characterized in that, The first oil outlet is located above the second oil collection tank.

10. The range hood as described in claim 7, characterized in that, The air inlet is rectangular, and the first oil outlet is connected to the corner of the air inlet.

11. The range hood as described in claim 7, characterized in that, The lower side plate is provided with a guide surface located between the edge of the lower side plate and the first oil collection tank. The guide surface is inclined to guide the oil to the first oil collection tank.

12. The range hood as described in claim 6, characterized in that, The upper adapter and the lower surface of the lower side plate form a joint. The upper adapter has a protrusion extending circumferentially along the exhaust port. The space on the side of the protrusion away from the exhaust port forms the second oil collection groove. The protrusion passes through the air inlet and protrudes into the housing.

13. The range hood as described in claim 12, characterized in that, The protrusion is positioned at a distance from the edge of the air inlet.

14. The range hood as described in claim 12, characterized in that, The protrusions include a plurality of protrusions spaced apart, and a second oil drain is formed between adjacent protrusions. The second oil drain connects the second oil collection tank and the exhaust port.

15. The range hood as described in claim 14, characterized in that, The protrusion is located at the edge of the exhaust vent.

16. The range hood as described in claim 14, characterized in that, The exhaust vent is rectangular, and the second oil outlet is connected to the corner of the exhaust vent.

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