Range hood

Abstract

The range hood comprises a volute and a liquid receiving disc, a first liquid leakage opening is formed in the bottom of the volute, the liquid receiving disc is arranged below the volute and suitable for receiving liquid flowing out of the first liquid leakage opening and blocking airflow flowing out of the first liquid leakage opening, the liquid receiving disc is provided with a second liquid leakage opening, and the second liquid leakage opening and the first liquid leakage opening are arranged in a staggered mode. When the range hood is in a greasy dirt cleaning state, liquid can enter the liquid receiving disc through the first liquid leakage opening and is discharged through the second liquid leakage opening, and when the range hood is in a normal oil smoke exhausting state, due to the fact that the first liquid leakage opening and the second liquid leakage opening are designed to be arranged in a staggered mode, the liquid leakage opening is not prone to falling off. The air flow flowing out of the first liquid leakage port collides with the liquid receiving disc and cannot be directly discharged through the second liquid leakage port, so that the resistance of the air flow passing through the first liquid leakage port is increased, the leakage degree of the air flow in the volute from the first liquid leakage port is reduced, the interference to the main air flow of the range hood is prevented, and the service life of the range hood is prolonged. In this way, the requirement for discharging liquid during cleaning can be met, and noise generated during smoke pumping and discharging is effectively reduced.

Description

Technical Field

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

[0002] The range hood can be cleaned of grease by steam washing or water washing. During the cleaning process, a large amount of liquid (waste liquid) will accumulate in the volute, which needs to be discharged in time. In the related technology, holes are opened on the volute to discharge the liquid. However, when there is no need to clean the grease and the smoke is exhausted normally, the airflow will flow out from the opening and interfere with the main airflow, resulting in increased noise. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a range hood.

[0004] To achieve the above object, the present application discloses a range hood, the range hood comprising:

[0005] A volute, wherein the bottom of the volute has a first liquid leakage port; and

[0006] The liquid receiving pan is arranged below the volute, and is suitable for receiving the liquid flowing out from the first liquid leakage port and blocking the airflow flowing out from the first liquid leakage port. The liquid receiving pan has a second liquid leakage port, and the second liquid leakage port and the first liquid leakage port are staggered.

[0007] In some embodiments of the present application, the center axis of the second liquid leakage port is not less than 30 mm away from the center axis of the first liquid leakage port.

[0008] In some embodiments of the present application, the liquid receiving pan cover is disposed at the bottom of the volute.

[0009] In some embodiments of the present application, the liquid receiving pan is connected to the volute.

[0010] In some embodiments of the present application, the liquid receiving pan has a first connection portion and a second connection portion, the first connection portion is suitable for being positioned and connected to the volute, and the second connection portion is firmly connected to the volute.

[0011] In some embodiments of the present application, the first connection portion and the volute are plug-connected, and the second connection portion and the volute are thread-connected.

[0012] In some embodiments of the present application, the volute includes a first panel, a second panel, and a rolling plate located between the first panel and the second panel, and the first panel, the second panel, and the rolling plate surround an air outlet that opens upward;

[0013] The liquid receiving tray has a cavity, and at least parts of the first panel and the second panel are located in the cavity and are respectively arranged alternately with the top edge of the liquid receiving tray.

[0014] In some embodiments of the present application, the first panel and / or the second panel is / are at least 2 mm away from the top edge of the liquid receiving tray.

[0015] In some embodiments of the present application, the liquid receiving tray is in a downwardly concave arc structure.

[0016] In some embodiments of the present application, the liquid receiving pan extends along a first direction to form the arc structure, and the center of the liquid receiving pan along the first direction is offset relative to the center of the volute toward the direction where the air outlet of the range hood is located.

[0017] In some embodiments of the present application, two opposite sides of the liquid receiving pan along the first direction are respectively a first side and a second side, and the first side is closer to the position where the air outlet is located relative to the second side;

[0018] The angle between the line connecting the first side and the center of the volute and the vertical line passing through the center of the volute is α, and the angle between the line connecting the second side and the center of the volute and the vertical line passing through the center of the volute is β, satisfying α>β, and α≥20°, β≥15°.

[0019] In some embodiments of the present application, the liquid receiving tray has a liquid conducting groove that is recessed downward, and the second liquid leakage port is disposed in the liquid conducting groove.

[0020] In some embodiments of the present application, the range hood further comprises a liquid guiding nozzle, and the liquid guiding nozzle cover is arranged below the liquid receiving tray, and is suitable for receiving and guiding away the liquid flowing out from the second liquid leakage port.

[0021] In some embodiments of the present application, the liquid guiding nozzle extends from the liquid receiving tray to the rear plate of the range hood.

[0022] In the technical solution of the present application, when the range hood is in a state of cleaning oil stains, liquid can enter the liquid receiving tray through the first liquid leakage port and then be discharged through the second liquid leakage port. When the range hood is in normal oil fume extraction and exhaust, since the first liquid leakage port and the second liquid leakage port are designed to be staggered, the airflow flowing out of the first liquid leakage port collides with the liquid receiving tray and will not be directly discharged through the second liquid leakage port. This increases the flow resistance at the location of the first liquid leakage port, thereby reducing the degree of leakage of the airflow in the volute from the first liquid leakage port, and preventing interference with the main airflow of the range hood. This can not only meet the liquid discharge requirements during cleaning, but also effectively reduce the noise during normal oil fume extraction and exhaust.

[0023] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 is a cross-sectional view of a range hood in some embodiments;

[0026] Figure 2 A schematic diagram of liquid flow in some embodiments;

[0027] Figure 3 for Figure 2 The enlarged view marked as A in FIG.

[0028] Figure 4 It is a schematic diagram of the assembly structure of the fan, the liquid receiving tray and the liquid guiding nozzle in some embodiments;

[0029] Figure 5 Exploded views of the fan, the liquid receiving tray and the liquid guiding nozzle in some embodiments;

[0030] Figure 6 It is a schematic diagram of the assembly structure of the fan, the liquid receiving tray and the liquid guiding nozzle in some embodiments;

[0031] Figure 7 Exploded views of the fan, the liquid receiving tray and the liquid guiding nozzle in some embodiments;

[0032] Figure 8 A rear view of the assembly structure of the fan, the liquid receiving tray and the liquid guide nozzle in some embodiments;

[0033] Fig. 9 A cross-sectional view of the assembly structure of the fan, the liquid receiving tray and the liquid guide nozzle in some embodiments;

[0034] Fig.10 for Fig. 9 The enlarged view marked as B in FIG.

[0035] Fig.11 for Fig. 9 The enlarged image marked as C in the figure;

[0036] Fig.12 Schematic diagram of a liquid receiving tray in some embodiments;

[0037] Fig.13Detailed description of some embodiments of the present invention.

[0038] Description of Figure Numbers:

[0039] Fan 1000, wind wheel 1100, motor 1200, volute 1300, first panel 1310, second panel 1320, roll plate 1330, first liquid leakage port 1331, air inlet 1341, air outlet 1342, center 1343, liquid receiving tray 2000, center 2001, first side 2002, second side 2003, cavity 2004, bottom plate 2100, liquid guide groove 2110, second liquid leakage port 2111, enclosure 2200, first connecting portion 2300, pin 2310, second connecting portion 2400, screw hole 2410, rear plate 3100, oil cup 4100, liquid guide nozzle 5000.

[0040] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0045] The present application proposes a range hood, combined with Figures 1 to 7 As shown, in some embodiments of the present application, the range hood includes a volute 1300 and a liquid collecting pan 2000, and a first liquid leakage port 1331 is provided at the bottom of the volute 1300. The liquid collecting pan 2000 is arranged below the volute 1300 so as to receive liquid flowing out of the first liquid leakage port 1331, and also needs to be designed to block the airflow flowing out of the first liquid leakage port 1331, and the liquid collecting pan 2000 is provided with a second liquid leakage port 2111, through which the liquid is guided to a component for collecting the liquid, and the second liquid leakage port 2111 needs to be designed to be staggered with the first liquid leakage port 1331. When the range hood is in the state of cleaning oil stains, the liquid can enter the liquid receiving tray 2000 through the first liquid leakage port 1331 and then be discharged through the second liquid leakage port 2111. When the range hood is in the state of normally extracting and exhausting oil smoke, since the first liquid leakage port 1331 and the second liquid leakage port 2111 are designed to be staggered, the airflow flowing out of the first liquid leakage port 1331 collides with the liquid receiving tray 2000 and will not be directly discharged through the second liquid leakage port 2111. This increases the flow resistance at the position of the first liquid leakage port 1331, thereby reducing the degree of leakage of the airflow in the volute 1300 from the first liquid leakage port 1331, and then preventing interference with the main airflow of the range hood. This can not only meet the liquid discharge requirements during cleaning, but also effectively reduce the noise during normal extraction and exhaust.

[0046] Specifically, the range hood includes a fan 1000, which includes a volute 1300, a wind wheel 1100 and a motor 1200. The wind wheel 1100 is generally a centrifugal wind wheel 1100, which is arranged in the volute 1300. The motor 1200 is arranged outside the volute 1300. The rotating shaft of the motor 1200 needs to pass through the volute 1300 and be connected to the wind wheel 1100. The volute 1300 has an air inlet 1341 and an air outlet 1342. The motor 1200 drives the wind wheel 1100 to rotate in the volute 1300, thereby driving the external smoke to enter the volute 1300 from the air inlet 1341, and then discharge the volute 1300 from the air outlet 1342. Since oil smoke contains a large amount of impurities, during the process of the range hood exhausting oil smoke, the impurities in the oil smoke will adhere to the surface corresponding to the flow path and form oil stains. The oil stains will affect the exhaust performance of the range hood and reduce the exhaust effect. The accumulation of oil stains will also produce odor. For this reason, after the range hood has been used for a period of time, the range hood needs to be cleaned to remove the oil stains.

[0047] There are many ways to clean the oil stains, for example, the range hood can be disassembled for cleaning, but this will bring great trouble and is not convenient to operate. For this reason, the relevant technology has developed a range hood with steam washing or water washing function. When this type of range hood needs to be cleaned, the steam washing or water washing function will be turned on to flush the oil stains inside the range hood. During the cleaning process, a large amount of liquid (waste liquid) will be generated, especially accumulated in the volute 1300. The liquid accumulated in the volute 1300 needs to be discharged into the oil cup 4100 in time, otherwise it is easy to cause the liquid to drip onto the stove. Generally speaking, a hole is opened at the bottom of the volute 1300, and the liquid formed by cleaning will be discharged into the oil cup 4100 through the hole, but this solution will bring some problems. That is, when there is no need to clean the oil stains, such as when the range hood is in normal smoke extraction and exhaust operation, the airflow driven by the wind wheel 1100 will flow out from the opening and collide with the main airflow (the main airflow is the airflow flowing to the air inlet 1341 of the volute 1300, and the airflow needs to enter the volute 1300 through the air inlet 1341 of the volute 1300). This not only affects the smoke extraction and exhaust performance, but the collision of the two airflows will also increase noise and reduce the user experience of the range hood.

[0048] To this end, in this embodiment, the problem is solved by setting a liquid receiving pan 2000. A first liquid leakage port 1331 is set at the bottom of the volute 1300. The bottom of the volute 1300 is the lower part of the volute 1300. When steam washing or water washing is performed, the liquid flows downward under the action of gravity, and then can be discharged from the volute 1300 through the first liquid leakage port 1331 to avoid accumulation inside the volute 1300. The liquid receiving pan 2000 is set below the volute 1300, so that the liquid flowing out of the first liquid leakage port 1331 can fall into the liquid receiving pan 2000 under the action of gravity and be collected by the liquid receiving pan 2000. The liquid receiving pan 2000 is provided with a second liquid leakage port 2111. The liquid collected by the liquid receiving pan 2000 is discharged through the second liquid leakage port 2111 and directed to the component for collecting liquid (such as the oil cup 4100). The second liquid leakage port 2111 needs to be designed to be staggered with the first liquid leakage port 1331. The so-called staggered arrangement means that the second liquid leakage port 2111 and the first liquid leakage port 1331 do not overlap in the fluid outflow direction of the first liquid leakage port 1331. In this way, when the range hood is in the steam washing or water washing program, the liquid in the volute 1300 flows out through the first liquid leakage port 1331 under the action of gravity, encounters the obstruction of the liquid receiving pan 2000 and is collected by the liquid receiving pan 2000, and then the liquid flows along the liquid receiving pan 2000 toward the second liquid leakage port 2111 on the liquid receiving pan 2000. That is to say, when the range hood is in normal smoke extraction and exhaust operation, if the airflow in the volute 1300 leaks through the first liquid leakage port 1331, the airflow will encounter the liquid receiving pan 2000 except the second liquid leakage port 2111 when it passes through the first liquid leakage port 1331 and continues to flow. The airflow leaking from the second liquid leakage port 2111 encounters resistance and then changes direction to continue flowing, which can increase the resistance of the airflow in the volute 1300 to leak out from the first liquid leakage port 1331, thereby reducing the leakage of the airflow in the volute 1300. Even if part of the airflow leaks out from the first liquid leakage port 1331, due to the blocking effect of the liquid receiving tray 2000, the liquid receiving tray 2000 can break up the part of the airflow leaking from the first liquid leakage port 1331, thereby reducing the conflict between these airflows and the main airflow in the range hood, and then reducing the noise.

[0049] It can be seen that by setting up the liquid receiving tray 2000 and designing the first liquid leakage port 1331 and the second liquid leakage port 2111 to be offset from each other, the liquid receiving tray 2000 can receive the liquid flowing out of the first liquid leakage port 1331, and can also reduce the amount of airflow leaking from the first liquid leakage port 1331 when the range hood is normally extracting and exhausting smoke, thereby reducing noise and improving the user experience of the range hood.

[0050] Combination Figure 3As shown, in some embodiments of the present application, the distance between the central axis of the first liquid leakage port 1331 and the central axis of the second liquid leakage port 2111 is not less than 30 mm, which can minimize the leakage of the airflow.

[0051] Specifically, the first liquid leakage port 1331 is provided in the form of a hole on the volute 1300, and the central axis of the first liquid leakage port 1331 extends in the up-down direction, and the second liquid leakage port 2111 is also provided in the form of a hole on the liquid receiving tray 2000, and the central axis of the second liquid leakage port 2111 extends in the up-down direction. It can be understood that the up-down, left-right, front-back in this article are based on the installation of the range hood in the kitchen as a reference, the side of the range hood facing the user is the front, the side away from the user is the back, the side corresponding to the user's left hand is the left, the side corresponding to the user's right hand is the right, the side close to the ground is the bottom, and the side away from the ground is the top.

[0052] The distance between the central axis of the first liquid leakage port 1331 and the central axis of the second liquid leakage port 2111 is L1, and L1 is not less than 30 mm, for example, L1 is 30 mm, 40 mm, 60 mm, 80 mm, etc., so that the airflow leaking from the first liquid leakage port 1331 can be more effectively prevented from being discharged through the second liquid leakage port 2111. This is because when the airflow leaks from the first liquid leakage port 1331 and collides with the liquid receiving tray 2000, it will diverge. If the distance L1 is designed to be not less than 30 mm, the divergent airflow needs to change direction and continue to flow for a certain distance before it can flow out through the second liquid leakage port 2111. After the divergent airflow changes direction and continues to flow for a certain distance, its own energy will be reduced, thereby avoiding rushing out of the second liquid leakage port 2111.

[0053] Combination Figures 4 to 7 As shown, in some embodiments of the present application, the liquid receiving tray 2000 is covered at the bottom of the volute 1300, so that the liquid receiving tray 2000 can be as close to the volute 1300 as possible, and together with the volute 1300, form a relatively closed space, so that the airflow leaking from the first liquid leakage port 1331 and the main airflow are separated as much as possible, further avoiding mutual collision between the two.

[0054] Specifically, the so-called relative closure does not mean that there is no connection at other positions except the connection between the first liquid leakage port 1331 and the second liquid leakage port 2111, but a spatial range can be enclosed by the cooperation between the liquid receiving tray 2000 and the volute 1300. For example, the liquid receiving tray 2000 has a bottom plate 2100 and a surrounding plate 2200. The bottom plate 2100 and the surrounding plate 2200 can be phase-separated components connected together by connecting means, or can be an integral structure. Taking the bottom plate 2100 and the surrounding plate 2200 as an integral structure as an example, a plate is prepared into the bottom plate 2100 and the surrounding plate 2200 by bending, stamping, punching and other processes, and the bottom plate 2100 and the surrounding plate 2200 enclose a cavity 2004, and the second liquid leakage port 2111 is arranged on the bottom plate 2100. The arrangement of the cavity 2004 enables the liquid receiving tray 2000 to accommodate a certain amount of liquid. When the liquid receiving tray 2000 is installed, the surrounding plate 2200 can be in contact with the volute 1300, and the bottom plate 2100 and the volute 1300 are spaced apart, so that the bottom plate 2100 is as close to the volute 1300 as possible, and the volute 1300 encloses the cavity 2004. Figure 8 As shown, the enclosure plates 2200 (the first side 2002 and the second side 2003 ) on the left and right sides of the liquid receiving pan 2000 are not in contact with the volute 1300 , but this does not affect the liquid receiving pan 2000 and the volute 1300 from enclosing a relatively closed space.

[0055] By such a configuration, the structural complexity of the liquid receiving tray 2000 is reduced, making it easier for the liquid receiving tray 2000 to cooperate with the volute 1300. When the airflow flows out from the first liquid leakage port 1331, it is also easier to collide with the bottom plate 2100, thereby forming a greater resistance when the airflow passes through the first liquid leakage port 1331.

[0056] In some embodiments of the present application, the liquid receiving pan 2000 is designed to be connected to the volute 1300 , which makes it easier to install and fix the liquid receiving pan 2000 .

[0057] It is understandable that there are many ways to fix the liquid receiving tray 2000, as long as the liquid receiving tray 2000 can be fixedly arranged below the volute 1300. For example, the liquid receiving tray 2000 can be fixed below the volute 1300 by setting other fixing structures inside the range hood, but this method is slightly troublesome, which involves the assembly and matching of the volute 1300, the liquid receiving tray 2000 and other fixing structures, and the installation and matching is slightly complicated. For this reason, in this embodiment, the liquid receiving tray 2000 is designed to be interconnected with the volute 1300, so that it is only necessary to ensure that the liquid receiving tray 2000 and the volute 1300 are assembled and matched with each other, reducing the difficulty of installation and matching.

[0058] The connection between the liquid receiving tray 2000 and the volute 1300 can be carried out by the following scheme, Figures 4 to 7 as well as Fig.12 and Fig.13 As shown, in some embodiments of the present application, the liquid receiving tray 2000 is provided with a second connecting portion 2400 and a first connecting portion 2300, the first connecting portion 2300 is used to achieve a positioning connection with the volute 1300, and the second connecting portion 2400 can be used to achieve a fastening connection with the volute 1300, thereby simplifying the assembly process and improving the assembly efficiency.

[0059] Specifically, when the liquid receiving pan 2000 is connected to the volute 1300, the first connection part 2300 needs to be positioned and connected to the volute 1300 first. It can be understood that the volute 1300 also has a structure that matches the first connection part 2300. When the first connection part 2300 is positioned and connected to the volute 1300, the relative position of the liquid receiving pan 2000 and the volute 1300 is constrained, so that it is convenient to further fasten the liquid receiving pan 2000 and the volute 1300. The further fastening of the liquid receiving pan 2000 and the volute 1300 is achieved through the second connection part 2400. Correspondingly, the volute 1300 also has a structure that matches the second connection part 2400. Through the fastening connection of the second connection part 2400, the liquid receiving pan 2000 is firmly fixed on the volute 1300. The second connection part 2400 and the first connection part 2300 may be an integral structure with the liquid receiving tray 2000 , and may be connected to the liquid receiving tray 2000 by connection means.

[0060] In order to facilitate the positioning connection of the first connection part 2300 and the fastening connection of the second connection part 2400, Fig.12 and Fig.13 As shown, in some embodiments of the present application, the first connection part 2300 is designed to be plug-connected with the volute 1300 to achieve preliminary positioning, and the second connection part 2400 is designed to be threadedly connected with the volute 1300 to achieve fastening.

[0061] Specifically, the first connection part 2300 includes a pin 2310, and correspondingly, the volute 1300 has a socket. The pin 2310 is inserted into the socket to realize the positioning of the liquid receiving tray 2000 relative to the volute 1300. The matching structure of the pin 2310 and the socket is simple and the matching scheme is simple. The second connection part 2400 includes a screw hole 2410, and correspondingly, the volute 1300 also has a screw hole. The screw is passed through the screw hole 2410 of the second connection part 2400 and the screw hole of the volute 1300 to achieve fastening, which effectively ensures the fixation of the liquid receiving tray 2000 relative to the volute 1300.

[0062] Combination Figures 9 to 11As shown, in some embodiments of the present application, the volute 1300 includes a first panel 1310, a second panel 1320 and a roll plate 1330, the second panel 1320 and the first panel 1310 are alternately arranged, the roll plate 1330 is arranged between the second panel 1320 and the first panel 1310, the second panel 1320, the first panel 1310 and the roll plate 1330 cooperate to enclose an air outlet 1342, the air outlet 1342 is open upward, at least a portion of the first panel 1310 and at least a portion of the second panel 1320 are located in the cavity 2004 of the liquid receiving tray 2000, and are spaced apart from the top edge of the liquid receiving tray 2000, so that the liquid receiving tray 2000 can receive the liquid flowing down from the surface of the volute 1300.

[0063] Specifically, when the range hood is steam-washed or water-washed, liquid will also form on the surface of the volute 1300 , and the liquid will flow downward along the surface of the volute 1300 under the action of gravity. Therefore, it is necessary to receive the liquid flowing along the surface of the volute 1300 .

[0064] The first panel 1310 is arranged in front of the second panel 1320, the motor 1200 is installed on the first panel 1310, and the second panel 1320 is provided with an air inlet 1341. Of course, the motor 1200 can also be installed on the second panel 1320, and the first panel 1310 is provided with an air inlet 1341. Take the motor 1200 installed on the first panel 1310 and the air inlet 1341 opened on the second panel 1320 as an example, in which case the air inlet 1341 is open to the rear. The rolling plate 1330 can be formed by winding a single plate, or by connecting and winding a plurality of plates. The rolling plate 1330 is arranged between the first panel 1310 and the second panel 1320, so as to cooperate with the second panel 1320 and the first panel 1310 to enclose an air outlet 1342, and the air outlet 1342 is open to the top.

[0065] When liquid is formed on the outer surface of the volute 1300, the liquid can flow downward along the first panel 1310, the second panel 1320 and the coil 1330. As for the coil 1330, since the coil 1330 is wound to a certain extent, the liquid flows along the coil 1330 and only leaves the coil 1330 when it flows to the lowest point of the coil 1330. Therefore, the liquid receiving pan 2000 is arranged at the bottom of the volute 1300 to effectively receive the liquid flowing down from the coil 1330. For the first panel 1310 and the second panel 1320, after the liquid receiving tray 2000 and the volute 1300 are assembled in place, at least part of the first panel 1310 and the second panel 1320 need to be embedded in the cavity 2004, and the top edges of the first panel 1310 and the liquid receiving tray 2000 are designed to be arranged alternately, and the top edges of the second panel 1320 and the liquid receiving tray 2000 are also designed to be arranged alternately, so that the liquid flowing along the first panel 1310 and the second panel 1320 can fall into the liquid receiving tray 2000 to be collected.

[0066] Taking the liquid receiving tray 2000 including the bottom plate 2100 and the surrounding plate 2200 arranged on the periphery of the bottom plate 2100 as an example, along the front-to-back direction, the first panel 1310 and the surrounding plate 2200 are partially overlapped, and the second panel 1320 and the surrounding plate 2200 are also partially overlapped, and the first panel 1310 and the surrounding plate 2200 are at a certain distance, and the second panel 1320 is also at a certain distance from the surrounding plate 2200. In this way, the liquid flowing along the first panel 1310 and the second panel 1320 can smoothly enter the containing cavity 2004 to be collected by the liquid receiving tray 2000. Through such a design, the collection of liquid inside and outside the volute 1300 can be achieved.

[0067] Continue to combine Figures 9 to 11 As shown, in some embodiments of the present application, the distance between the second panel 1320 and / or the first panel 1310 and the top edge of the liquid receiving tray 2000 is designed to be no less than 2 mm, ensuring that the liquid flowing along the second panel 1320 and / or the first panel 1310 can smoothly enter the liquid receiving tray 2000.

[0068] Specifically, taking the liquid receiving tray 2000 including the bottom plate 2100 and the surrounding plate 2200 arranged around the bottom plate 2100 as an example, the distance between the first panel 1310 and the surrounding plate 2200 is L2, satisfying that L2 is greater than or equal to 2 mm, and L2 can be 2 mm, 4 mm, 7 mm, 10 mm, 15 mm or others. The distance between the second panel 1320 and the surrounding plate 2200 is L3, satisfying that L3 is greater than or equal to 2 mm, and L3 can be 2 mm, 4 mm, 7 mm, 10 mm, 15 mm or others. By optimizing L2 and L3, even when a large amount of liquid flows on the second panel 1320 and / or the first panel 1310, it can be smoothly received by the liquid receiving tray 2000.

[0069] Combination Figures 4 to 7 As shown, in some embodiments of the present application, the liquid receiving tray 2000 is designed to be an arc-shaped structure that is recessed downward, so that it can form a better fit with the volute 1300, reduce the space occupied, and thus reduce the resistance to the main airflow.

[0070] Specifically, the volute 1300 includes a first panel 1310, a second panel 1320 and a roll plate 1330 located between the first panel 1310 and the second panel 1320. The air outlet 1342 of the volute 1300 is open upward. When the liquid receiving tray 2000 is arranged below the volute 1300, the roll plate 1330 is curled to a certain extent. For this reason, in the present embodiment, the liquid receiving tray 2000 is designed to be an arc-shaped structure recessed toward the bottom. In this way, the liquid receiving tray 2000 can be adapted to the shape of the roll plate 1330 as much as possible, so that the liquid receiving tray 2000 can fit the bottom of the volute 1300 as much as possible, thereby reducing the space occupied by the liquid receiving tray 2000 outside the volute 1300 and reducing the resistance of the liquid receiving tray 2000 to the main airflow.

[0071] Combination Figure 8 As shown, in some embodiments of the present application, the liquid receiving pan 2000 is designed to extend along the first direction, so that the liquid receiving pan 2000 constitutes an arc-shaped structure recessed toward the bottom, and the center 2001 of the liquid receiving pan 2000 along the first direction is designed to be offset toward the direction where the air outlet 1342 is located relative to the center 1343 of the volute 1300, so that the liquid receiving pan 2000 can achieve a better liquid receiving effect.

[0072] Specifically, the shape of the roll plate 1330 is similar to a spiral, and the air outlet 1342 is arranged on one side of the center 1343 of the volute 1300. If the volute 1300 is divided into two halves through the center 1343 of the volute 1300, the surface area of ​​the half including the air outlet 1342 will be larger, that is, more liquid can be formed on the surface of the half including the air outlet 1342. Therefore, in this embodiment, the center 2001 of the liquid receiving plate 2000 is offset relative to the center 1343 of the volute 1300 toward the direction where the air outlet 1342 is located, so that a better liquid receiving effect can be achieved.

[0073] The center 1343 of the volute 1300 is coaxial with the rotation center of the wind wheel 1100. Figure 8As shown, a vertical line is drawn through the center 1343 of the volute 1300, so that the volute 1300 can be divided into a left half and a right half, and the air outlet 1342 is located in the right half. The first direction is roughly adapted to the roll plate 1330, and the center 2001 of the liquid receiving pan 2000 along the first direction is located on the right side of the vertical line through the center 1343 of the volute 1300, so that a large amount of liquid in the right half can be better received.

[0074] Continue to combine Figure 8 As shown, in some embodiments of the present application, the two opposite sides of the liquid receiving tray 2000 along the first direction are defined as the second side 2003 and the first side 2002, and the first side 2002 is located to the right of the second side 2003, so that the first side 2002 is closer to the position of the air outlet 1342 relative to the second side 2003, that is, the air outlet 1342 and the first side 2002 are located to the right of the dividing line passing through the center 1343, and the second side 2003 is located to the left of the vertical line passing through the center 1343.

[0075] In order to ensure that the liquid receiving pan 2000 receives the liquid in the left and right halves, the offset angles of the second side 2003 and the first side 2002 are optimized. Specifically, the angle formed between the line connecting the center 1343 of the volute 1300 and the first side 2002 and the vertical line passing through the center 1343 of the volute 1300 is α, which satisfies α≥20°, and the angle formed between the line connecting the center 1343 of the volute 1300 and the second side 2003 and the vertical line passing through the center 1343 of the volute 1300 is β, which satisfies β≥15°, and α>β, thus ensuring the receiving of the liquid in the left and right halves of the volute 1300 to the greatest extent.

[0076] Combination Fig.12 and Fig.13 As shown, in some embodiments of the present application, the liquid receiving tray 2000 has a liquid guiding groove 2110, which is recessed downward, and a second liquid leakage port 2111 is disposed in the liquid guiding groove 2110. By providing the liquid guiding groove 2110, the airflow can be prevented from carrying the liquid in the liquid receiving tray 2000 and overflowing from the edge of the liquid receiving tray 2000.

[0077] Specifically, when cleaning the volute 1300 and the wind wheel 1100 from oil stains, in order to enhance the cleaning effect, the fan 1000 can be started, and the wind wheel 1100 will rotate. The rotation of the wind wheel 1100 will also cause the flow of air. When the liquid receiving tray 2000 receives a certain amount of liquid, if the airflow in the volute 1300 flows out through the first liquid leakage port 1331, these airflows will drive the liquid in the liquid receiving tray 2000 to overflow over the edge of the liquid receiving tray 2000, and even drip onto the stove or kitchen utensils. To this end, in the present embodiment, a liquid guiding groove 2110 is provided in the liquid receiving tray 2000, and the liquid guiding groove 2110 has a greater depth relative to other parts of the liquid receiving tray 2000. Thus, when the liquid flows to the liquid receiving tray 2000, it will quickly flow toward the liquid guiding groove 2110, and then be discharged through the second liquid leakage port 2111. It is precisely because the liquid guiding groove 2110 has a greater depth that, even if air flows out from the first liquid leakage port 1331, it is difficult to cause the liquid in the liquid guiding groove 2110 to splash out of the liquid receiving tray 2000.

[0078] Combination Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments of the present application, the range hood further includes a liquid guiding nozzle 5000, which is disposed under the liquid receiving tray 2000, and the liquid in the liquid receiving tray 2000 is guided and discharged through the liquid guiding nozzle 5000.

[0079] Specifically, since the liquid receiving pan 2000 needs to receive the liquid flowing down from the volute 1300, and since the area of ​​the liquid receiving pan 2000 needs to be designed to be compatible with the bottom of the volute 1300, the liquid collected by the liquid receiving pan 2000 will eventually be discharged into the oil cup 4100. In order to facilitate the discharge of the liquid from the liquid receiving pan 2000, in this embodiment, a liquid guide nozzle 5000 is provided. Since the liquid guide nozzle 5000 only needs to receive the liquid flowing out from the second liquid leakage port 2111, the size of the liquid guide nozzle 5000 can be designed to be much smaller than the liquid receiving pan 2000, thereby reducing the space occupied and the resistance to the main airflow. The liquid guide nozzle 5000 is open upward, so that it can be covered on the liquid receiving pan 2000. The liquid flowing out from the second liquid leakage port 2111 flows to the liquid guide nozzle 5000 under the action of gravity, and the liquid guide nozzle 5000 guides the liquid into the oil cup 4100. The liquid guide nozzle 5000 may be installed on the liquid receiving tray 2000 in a manner similar to the manner in which the liquid receiving tray 2000 is installed on the volute 1300 , thereby facilitating the assembly between the liquid guide nozzle 5000 and the liquid receiving tray 2000 .

[0080] Combination Figure 1 and Figure 2As shown, in some embodiments of the present application, the liquid guide nozzle 5000 extends from the liquid receiving tray 2000 to the rear plate 3100 of the range hood, so that the liquid guided by the liquid guide nozzle 5000 can flow downward along the rear plate 3100 to the oil cup 4100, thereby preventing the liquid from being blocked by the main airflow during its flow toward the oil cup 4100.

[0081] Specifically, the oil cup 4100 is arranged at the lower position of the range hood, while the fan 1000 is arranged at the upper position of the range hood. The liquid guide nozzle 5000 can extend from the liquid receiving tray 2000 to the oil cup 4100, but this will cause the liquid guide nozzle 5000 to occupy more space and cause resistance to the main airflow. For this reason, in this embodiment, the liquid guide nozzle 5000 is extended to the rear plate 3100, and the liquid guide nozzle 5000 can be inclined to a certain degree, so that the liquid in the liquid receiving tray 2000 flows to the liquid guide nozzle 5000 through the second liquid leakage port 2111, and then flows to the rear plate 3100 under the action of gravity, and then flows downward along the rear plate 3100 and enters the oil cup 4100. Since the liquid flows along the rear plate 3100, the influence of the airflow flowing from bottom to top on the flow of the liquid is reduced.

[0082] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that: include: A volute, wherein the bottom of the volute is provided with a first liquid leakage port; as well as The liquid receiving pan is arranged below the volute, and is suitable for receiving the liquid flowing out from the first liquid leakage port and blocking the airflow flowing out from the first liquid leakage port. The liquid receiving pan has a second liquid leakage port, and the second liquid leakage port and the first liquid leakage port are staggered.

2. The range hood according to claim 1, characterized in that: The distance between the center axis of the second liquid leakage port and the center axis of the first liquid leakage port is not less than 30 mm.

3. The range hood according to claim 1, characterized in that: The liquid receiving pan cover is arranged at the bottom of the volute.

4. The range hood according to claim 1, characterized in that: The liquid receiving pan is connected to the volute.

5. The range hood according to claim 4, characterized in that: The liquid receiving pan has a first connection portion and a second connection portion, wherein the first connection portion is suitable for being positioned and connected to the volute, and the second connection portion is firmly connected to the volute.

6. The range hood according to claim 5, characterized in that: The first connection portion is plug-connected to the volute, and the second connection portion is thread-connected to the volute.

7. The range hood according to claim 1, characterized in that: The volute comprises a first panel, a second panel and a rolling plate located between the first panel and the second panel, wherein the first panel, the second panel and the rolling plate surround an air outlet that opens upward; The liquid receiving tray has a cavity, and at least parts of the first panel and the second panel are located in the cavity and are respectively arranged alternately with the top edge of the liquid receiving tray.

8. The range hood according to claim 7, characterized in that: The first panel and / or the second panel is / are at least 2 mm away from the top edge of the liquid receiving tray.

9. The range hood according to claim 1, characterized in that: The liquid receiving tray is in a downwardly concave arc structure.

10. The range hood according to claim 9, characterized in that: The liquid receiving pan extends along a first direction to form the arc structure, and the center of the liquid receiving pan along the first direction is offset relative to the center of the volute toward the direction where the air outlet of the range hood is located.

11. The range hood according to claim 10, characterized in that: Two opposite sides of the liquid receiving pan along the first direction are respectively a first side and a second side, and the first side is closer to the position where the air outlet is located relative to the second side; The angle between the line connecting the first side and the center of the volute and the vertical line passing through the center of the volute is α, and the angle between the line connecting the second side and the center of the volute and the vertical line passing through the center of the volute is β, satisfying α>β, and α≥20°, β≥15°.

12. The range hood according to claim 1, characterized in that: The liquid receiving plate has a liquid guiding groove which is concave downwards, and the second liquid leakage port is arranged in the liquid guiding groove.

13. The range hood according to claim 1, characterized in that: The range hood further comprises a liquid guiding nozzle, wherein the liquid guiding nozzle cover is arranged below the liquid receiving tray and is suitable for receiving and guiding away the liquid flowing out of the second liquid leakage port.

14. The range hood according to claim 13, characterized in that: The liquid guiding nozzle extends from the liquid receiving tray to the rear plate of the range hood.

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