A range hood

Abstract

The application discloses a range hood, and belongs to the technical field of electric appliances. The range hood comprises a main body, a fan and a cleaning device. The main body is provided with an air duct, an air inlet and a mounting cavity. The air inlet and the second accommodating cavity are both connected with the air duct. The fan is arranged in the mounting cavity. The cleaning device is arranged in the air duct and is used at least for cleaning the inner wall of the air duct. The cleaning device is arranged in the air duct, so that the inner wall of the air duct can be automatically cleaned by the cleaning device, without manual cleaning by the user, and the user experience can be improved to a certain extent.

Description

Technical Field

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

[0002] Range hoods, as a common kitchen appliance, are widely used in kitchens, primarily to extract cooking fumes from the kitchen and vent them outdoors. During operation, a fan creates negative pressure within the range hood to draw the fumes in, which are then exhausted outdoors through the ductwork. After entering the range hood, some of the fumes adhere to the inner walls. Over time, this grease buildup can clog the air intake, affecting the range hood's performance. It can also cause grease to drip onto the cooktop, resulting in a poor user experience. Furthermore, the cleaning devices in related technologies have a relatively small cleaning range. Utility Model Content

[0003] This application aims to at least partially solve the technical problem of the limited cleaning range of cleaning devices. To this end, this application provides a range hood.

[0004] In a first aspect, an embodiment of this application provides a range hood, comprising:

[0005] The main body has an air duct, an air inlet, and an installation cavity, wherein the air inlet and the second receiving cavity are both connected to the air duct;

[0006] The fan is installed inside the mounting cavity;

[0007] A cleaning device is installed inside the air duct and is used at least to clean the inner wall of the air duct.

[0008] By placing the cleaning device inside the air duct, the inner wall of the air duct can be cleaned automatically without the need for manual cleaning by the user, which can also improve the user experience to a certain extent.

[0009] In an optional embodiment of this application, the main body includes a back plate and a connecting plate, the connecting plate is connected to the back plate, the back plate and the connecting plate together form the air duct, and the cleaning device is installed on the back plate.

[0010] In an optional embodiment of this application, the cleaning device may be oscillating relative to the back panel.

[0011] In an optional embodiment of this application, the back plate is provided with a first limiting member and a second limiting member, and the cleaning device is disposed between the first limiting member and the second limiting member along the width direction of the main body.

[0012] In an optional embodiment of this application, the cleaning device is disposed in the middle of the back plate along the width direction of the main body.

[0013] In an optional embodiment of this application, the range hood further includes a water pump, a clean water box, and a wastewater box. The water pump is connected to the cleaning device and is used to transport the cleaning medium in the clean water box to the cleaning device. The wastewater box is used to receive the cleaning medium sprayed from the cleaning device.

[0014] In an optional embodiment of this application, the clean water box and the wastewater box are arranged side by side at the bottom of the main body.

[0015] In an optional embodiment of this application, the cleaning device includes:

[0016] The shell has a first receiving cavity and a water outlet;

[0017] The filler includes a filling part disposed in the first receiving cavity, the filling part being spaced apart from the inner wall of the housing, and the gap between the filling part and the housing forming a water outlet cavity; the water outlet cavity and the water outlet hole are connected.

[0018] In an optional embodiment of this application, the housing and / or the filler are provided with a first fixing part, the main body is provided with a second fixing part, and the range hood further includes a fixing member, which is fixedly connected to the first fixing part and the second fixing part.

[0019] In an optional embodiment of this application, the housing has a first water outlet surface and a second water outlet surface arranged opposite to each other. The first water outlet surface and the second water outlet surface are inclined upward relative to the height direction of the main body, and both the first water outlet surface and the second water outlet surface are provided with the water outlet hole.

[0020] In an optional embodiment of this application, the first water outlet surface and the second water outlet surface are inclined in a direction close to the corresponding surface.

[0021] In an optional embodiment of this application, the top of the housing also has a third water outlet surface, which connects the first water outlet surface and the second water outlet surface. The third water outlet surface is provided with the water outlet hole, which is used to clean the fan.

[0022] In an optional embodiment of this application, the water outlet includes a first water outlet section, a second water outlet section, and a third water outlet section that are interconnected. The end of the first water outlet section away from the second water outlet section is connected to the water outlet cavity. The third water outlet section is connected to the end of the second water outlet section away from the first water outlet section. The diameter of the first water outlet section is larger than the diameter of the second water outlet section, and the diameter of the third water outlet section is larger than the diameter of the second water outlet section.

[0023] In an optional embodiment of this application, the housing further includes a water inlet cavity and a connecting hole, wherein the water inlet cavity is connected to the water outlet cavity through the connecting hole;

[0024] The cleaning device also includes a heating element for heating the cleaning medium in the water inlet chamber.

[0025] In an optional embodiment of this application, the connecting hole includes a first connecting segment, a second connecting segment, and a third connecting segment that are interconnected. The first connecting segment is connected to the water inlet chamber, the second connecting segment is connected to the water outlet chamber, and the third connecting segment connects the second connecting segment and the water outlet chamber. The diameter of the first connecting segment is larger than the diameter of the second connecting segment, and the diameter of the third connecting segment is larger than the diameter of the second connecting segment.

[0026] In an optional embodiment of this application, the housing includes an outer shell, a first partition and a second partition. The first partition is disposed inside the outer shell, dividing the outer shell into a first receiving cavity and a second receiving cavity. The second partition is disposed inside the second receiving cavity and connected to the first partition. The second partition and the first partition form the water inlet cavity. The second partition, the outer shell and the first partition form a fixed cavity. The heating element is disposed inside the fixed cavity. The communicating hole is disposed in the first partition. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the range hood with its air inlet open, as shown in an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the second view of the opening of the air inlet of the range hood provided in the embodiment of this application.

[0030] Figure 3This is a structural schematic diagram from a third perspective showing the air inlet of the range hood provided in an embodiment of this application open.

[0031] Figure 4 A schematic diagram of the cleaning device is shown.

[0032] Figure 5 An exploded view of the cleaning device is shown.

[0033] Figure 6 It shows Figure 4 Sectional view along the AA direction.

[0034] Figure 7 It shows Figure 6 A magnified view of a section at point I.

[0035] Figure 8 A structural schematic diagram of the housing of the cleaning device is shown from a first-view perspective.

[0036] Figure 9 A structural schematic diagram of the housing of the cleaning device is shown from a second perspective.

[0037] Figure 10 It shows Figure 7 A magnified view of section II in the middle.

[0038] Figure 11 A third-view structural schematic diagram of the housing of the cleaning device is shown.

[0039] Figure 12 A structural schematic diagram of the housing of the cleaning device is shown from a fourth perspective.

[0040] Figure 13 It shows Figure 7 A magnified view of section III in the middle.

[0041] Reference numerals: 10-range hood, 100-main body, 110-air duct, 120-air inlet, 130-installation cavity, 140-panel, 150-back panel, 160-connecting plate, 170-baffle, 180-first limiting component, 190-second limiting component;

[0042] 200 - Cleaning device; 210 - Housing; 211 - First receiving cavity; 2112 - Water outlet cavity; 212 - Water outlet hole; 2122 - First water outlet section; 2124 - Second water outlet section; 2126 - Third water outlet section; 2131 - First water outlet surface; 2132 - Second water outlet surface; 2133 - Third water outlet surface; 2134 - Fourth water outlet surface;

[0043] 214-Second receiving cavity, 2142-Water inlet cavity, 2144-Fixed cavity, 215-Connecting hole, 2152-First connecting section, 2154-Second connecting section, 2156-Third connecting section, 216-Outer shell, 217-First partition, 218-Second partition;

[0044] 220-filler, 222-filler section, 224-connector, 226-transition section, 230-first fixing section, 240-heating element, 250-water inlet element;

[0045] 300 - Fan, 400 - Water pump, 500 - Clean water box, 600 - Sewage box. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, in this utility model, descriptions involving "first," "second," etc., are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. 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. When 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 by this utility model.

[0050] Range hoods, as a common kitchen appliance, are widely used in kitchens, primarily to extract cooking fumes from the kitchen and vent them outdoors. During operation, a fan creates negative pressure within the range hood's main body, drawing the fumes inside and then expelling them outdoors through the ductwork. After entering the range hood, some of the fumes adhere to the inner walls. Over time, this grease buildup can clog the air intake, affecting the range hood's performance. It can also cause grease to drip onto the cooktop, resulting in a poor user experience.

[0051] In related technologies, cleaning of range hoods mostly relies on manual cleaning, which is time-consuming, labor-intensive, and inefficient. Some range hoods have automatic cleaning devices, but the cleaning range of these devices is limited. The range hood provided in this application can automatically clean its interior, increasing the cleaning range and improving the cleaning effect.

[0052] This application is described below with reference to the accompanying drawings and specific embodiments:

[0053] Figure 1 This is a structural schematic diagram of the range hood 10 provided in this application embodiment, showing a first-view perspective of the open air inlet 120. Figure 2 This illustration shows a structural schematic diagram of the range hood 10 provided in this application with the air inlet 120 open from a second perspective. Figure 1 and Figure 2 As shown, this application embodiment provides a range hood 10, which can improve the cleaning range.

[0054] In this embodiment, the range hood 10 includes: a main body 100, a fan 300, and a cleaning device 200. The main body 100 has an air duct 110, an air inlet 120, and a mounting cavity 130. The air inlet 120 and the mounting cavity 130 are both connected to the air duct 110. The fan 300 is disposed in the mounting cavity 130. The cleaning device 200 is disposed in the air duct 110 and is used at least for cleaning the inner wall of the air duct 110.

[0055] The main body 100 is the basic component of the entire range hood 10, providing a base for the installation of the fan 300, cleaning device 200, and other structures. The fan 300 and cleaning device 200 can be installed on the main body 100, allowing the entire range hood 10 to form a unified structure. The duct 110 and the mounting cavity 130 are both located within the main body 100, with the flue pipe connected to the mounting cavity 130, specifically to the air outlet of the fan 300. When the fan 300 starts, it creates a negative pressure within the entire main body 100, allowing external air to enter the duct 110 through the air inlet 120 and then be exhausted outdoors through the exhaust pipe. If the user generates a large amount of oil fumes during cooking (such as stir-frying, deep-frying, etc.), the negative pressure of the range hood 10 draws the fumes into the duct 110 and exhausts them through the flue pipe.

[0056] Because the flue gas contains a large amount of oil, and this oil has a certain weight, after the flue gas enters the duct 110, the oil may adhere to the inner wall of the duct 110 or the air inlet 120. If not cleaned for a long time, the air inlet 120 may become clogged, or the oil adhering to the inner wall of the duct 110 may drip onto the stovetop under gravity, resulting in a poor user experience. In this embodiment, a cleaning device 200 is installed inside the duct 110 to promptly clean the oil adhering to the inner wall of the duct 110 and the air inlet 120, keeping the duct 110 and air inlet 120 as clean as possible. In this embodiment, by installing the cleaning device 200 inside the duct 110, the inner wall of the duct 110 can be automatically cleaned by the cleaning device 200, eliminating the need for manual cleaning by the user and improving the user experience to some extent.

[0057] In some embodiments, along the height direction of the main body 100, the air duct 110 is disposed below the mounting cavity 130, that is, in the air duct 110 and the mounting cavity 130, the air duct 110 is disposed closer to the stove, and the air inlet 120 can be disposed facing the stove, so that the smoke can enter the air duct 110 through the air inlet 120. Since the air duct 110 is relatively large compared to the receiving cavity, the cleaning device 200 is disposed in the air duct 110 so that the cleaning device 200 can clean a larger area of ​​the air duct 110, and can also improve the cleaning range of the cleaning device 200 to a certain extent.

[0058] It should be noted that in this embodiment of the application, the cleaning medium cleans the oil stains in the air duct 110. After the cleaning device 200 delivers the cleaning medium, it can control the fan 300 to start, thereby drying the cleaning medium in the air duct 110, so that the air duct 110 can be dried quickly.

[0059] like Figure 1 and Figure 2As shown, in some embodiments, the main body 100 includes a back plate 150 and a connecting plate 160. The connecting plate 160 is connected to the back plate 150. The back plate 150 and the connecting plate 160 together form an air duct 110. The cleaning device 200 is installed on the back plate 150, and the air inlet is located on the side of the main body 100 away from the back plate 150.

[0060] In some other embodiments, the main body 100 also includes a panel 140, which is disposed opposite to the back panel 150. The panel 140 can open or close the air inlet 120. During the operation of the range hood 10, the panel 140 opens the air inlet 120, and the panel 140 closes the air inlet 120 when the range hood 10 is turned off.

[0061] In this embodiment, for ease of description, the main body 100 is defined to have a width direction, a height direction, and a thickness direction. The height direction is the vertical direction of the range hood 10 in its operating state. The side with the receiving cavity is defined as the upper part, and the side with the air duct 110 is defined as the lower part. The thickness direction is defined as the direction between the panel 140 and the back panel 150, with the side with the panel 140 being the front and the side with the back panel 150 being the rear. The width direction is defined to be approximately perpendicular to the height and vertical directions. From the perspective of the panel 140 facing the air duct 110, the left side is the left and the right side is the right.

[0062] There can be two connecting plates 160, which are respectively connected to the left and right sides of the front panel 140 and the back panel 150. The receiving cavity is located above the air duct 110. The main body 100 may also include a baffle 170, which is connected to the front panel 140. The baffle 170 is located on the side of the front panel 140 away from the back panel 150, that is, the baffle 170 is located in the upper front of the front panel 140. The baffle 170 can play a certain blocking role to prevent the oil fumes from continuing to spread upward, so that the oil fumes can be collected at the front panel 140 and enter the air duct 110 through the air inlet 120 on the front panel 140.

[0063] After the fan 300 starts, under negative pressure, the fumes enter the duct 110. Since the back panel 150 and the front panel 140 are positioned opposite each other, some of the fumes flow towards the back panel 150 after entering the duct 110. The back panel 150 obstructs the flow, changing its direction and causing more grease to adhere to it. Installing the cleaning device 200 on the back panel 150, making it closer to the back panel 150, allows the cleaning device to clean the back panel 150 more easily, thus improving the cleaning effect.

[0064] In addition, since the air inlet 120 is provided on the panel 140 and the cleaning device 200 is installed on the back panel 150, the cleaning device 200 can avoid occupying the setting position of the air inlet 120, so that the air inlet 120 can be as large as possible, which can increase the air intake and improve the exhaust volume of oil fumes, thereby improving the working efficiency of the range hood 10.

[0065] In some embodiments, the cleaning device 200 can be fixed to the back plate 150. This facilitates the assembly of the cleaning device 200 and reduces the risk of the cleaning device 200 being removed from the back plate 150. In other embodiments, the cleaning device 200 can be movably connected to the back plate 150; specifically, the cleaning device 200 can swing relative to the back plate 150.

[0066] The ability of the cleaning device 200 to swing relative to the back panel 150 means that the cleaning device 200 swings in the width direction of the main body 100. Since the air duct 110 is the longest in the width direction, the swinging of the cleaning device 200 in the width direction allows the water flowing out of the water outlet 212 to flow to a farther position, so that the water can be sprayed to a position farther away from the cleaning device 200, thereby increasing the cleaning range of the cleaning device 200 on the air duct 110.

[0067] As for the swinging mode of the cleaning device 200 relative to the back plate 150, a driver and a rotating shaft can be provided. The driver is connected to the rotating shaft, and the rotating shaft is connected to the cleaning device 200. The driver drives the rotating shaft to rotate back and forth, thereby realizing the swinging of the cleaning device 200 relative to the back plate 150.

[0068] like Figure 2 As shown, in some embodiments, the back panel 150 is provided with a first limiting member 180 and a second limiting member 190, and the cleaning device 200 is disposed between the first limiting member 180 and the second limiting member 190 along the width direction of the main body 100.

[0069] During the swinging process of the cleaning device 200 relative to the back plate 150, since the cleaning device 200 has a certain weight and contains a certain amount of cleaning medium, if the swinging amplitude of the cleaning device 200 is too large, the cleaning device 200 may easily tip over under its own weight. The cleaning device 200 is positioned between the first limiting member 180 and the second limiting member 190, so that the cleaning device 200 can only swing in the area between the first limiting member 180 and the second limiting member 190. This limits the swinging range of the cleaning device 200, so that the cleaning device 200 can maintain normal operation while increasing the cleaning range.

[0070] As for the swing angle, the contact point between the cleaning device 200 and the first limiting member 180 can be taken as the first contact point, the line connecting the first contact point and the rotating shaft can be taken as the first connecting line, the contact point between the cleaning device 200 and the second limiting member 190 can be taken as the second contact point, the line connecting the second contact point and the rotating shaft can be taken as the second connecting line, and the included angle between the first connecting line and the second connecting line is the maximum swing angle of the cleaning device 200. The maximum swing angle can be 120°, 130°, 140°, 150°, 160°, etc., as long as the maximum swing angle is less than 180°.

[0071] In some embodiments, the cleaning device 200 is disposed at the center of the back plate 150 along the width direction of the body 100.

[0072] Since the air duct 110 is relatively long in the width direction of the main body 100, the cleaning device 200 is set in the middle of the back plate 150 so that the areas on the left and right sides that the cleaning device 200 can clean are roughly the same. This allows the cleaning device 200 to clean the areas on both sides of the air duct 110 as much as possible, ensuring that the inner wall of the air duct 110 is cleaned evenly and improving the cleaning effect of the air duct 110.

[0073] Figure 3 This is a structural schematic diagram from a third perspective showing the air inlet 120 of the range hood 10 provided in an embodiment of this application open. Figure 3 The dashed line indicates the flow direction of the cleaning medium in the cleaning device 200, such as... Figure 3 As shown, in some embodiments, the range hood 10 further includes a water pump 400, a clean water box 500, and a wastewater box 600. The water pump 400 is connected to the cleaning device 200 and is used to transport the cleaning medium in the clean water box 500 to the cleaning device 200. The wastewater box 600 is used to receive the cleaning medium sprayed from the cleaning device 200.

[0074] The water tank 500 is used to hold the cleaning medium, which can be clean water, cleaning liquid, or a mixture of water and cleaning liquid. The cleaning medium can be prepared according to the degree of dirt on the inner wall of the air duct 110. If the water tank 500 contains clean water, the water can be heated into steam, and the steam can soften the oil stains inside the air duct 110 or on the fan 300, thereby improving the cleaning effect. In another embodiment, the water tank 500 can store two different cleaning media, which can be cleaning water and cleaning agent. With two different cleaning media stored in the clean water box 500, the two different cleaning media can be delivered in the same or different order. When the two different cleaning media are delivered in the same order, the cleaning water and cleaning agent are heated to generate a cleaning solution with a temperature. When the two different cleaning media are delivered in different order, for example, the cleaning water is delivered first, and the steam after heating the cleaning water can soften the oil stains, and then the cleaning agent is delivered, and the heated cleaning agent can decompose the oil stains; or, for example, the cleaning agent is delivered first, and the heated cleaning agent can decompose the oil stains, and then the cleaning water is delivered, and the steam after heating the cleaning water can soften the oil stains. Multiple cleaning modes can be formed to adapt to different oil stain concentrations in the air duct 110 and the fan 300.

[0075] Wastewater box 600 is used to hold the cleaned water. Water pump 400 can be connected to clean water box 500 to transport the cleaning medium in clean water box 500 to cleaning device 200, and then output it to different positions in air duct 110 through cleaning device 200, thereby cleaning the area.

[0076] The water pump 400 can be positioned on the side of the air duct 110 closest to the clean water box 500. If the clean water box 500 is positioned on the bottom left side of the air duct 110, then the water pump 400 is also positioned on the bottom left side of the air duct 110. If the clean water box 500 is positioned on the bottom right side of the air duct 110, then the water pump 400 is also positioned on the bottom right side of the air duct 110. Positioning the water pump 400 close to the clean water box 500 reduces the amount of piping between the water pump 400 and the clean water box 500, thus reducing water pressure loss. This allows the cleaning medium to have a certain initial pressure when entering the cleaning device 200, thereby increasing the distance the cleaning medium travels from the water outlet 212 and expanding the cleaning range of the cleaning medium, thus improving the cleaning effect of the cleaning device 200 to a certain extent.

[0077] In some embodiments, the clean water box 500 and the wastewater box 600 are arranged side by side at the bottom of the main body 100. That is, the clean water box 500 and the wastewater box 600 are arranged at the bottom of the main body 100 along the width direction of the main body 100. The clean water box 500 can be located to the left of the wastewater box 600, or the wastewater box 600 can be located to the left of the clean water box 500. The left-right positional relationship between the clean water box 500 and the wastewater box 600 is not limited.

[0078] The cleaning device 200 can output cleaning medium to the left and right sides of the air duct 110 (along the width direction of the main body 100). The cleaning medium will be sprayed out to the left and right sides of the cleaning device 200. Since the clean water box 500 and the wastewater box 600 are also arranged along the width direction of the main body 100, in order to prevent the cleaning medium that has cleaned the air duct 110 from contaminating the cleaning medium in the clean water box 500, the clean water box 500 can be set as a closed box and connected to the water pump 400 through a pipe. Alternatively, a diversion plate can be set above the clean water box 500 to divert the cleaning medium flowing out of the cleaning device 200 to the wastewater box 600, thereby keeping the clean water box 500 clean.

[0079] The clean water box 500 and the wastewater box 600 are arranged side by side at the bottom of the main body 100, utilizing the space at the bottom of the main body 100 to make the entire range hood 10 structure more compact. Additionally, since the range hood 10 is generally installed above the stovetop, installing the clean water box 500 at the bottom of the main body 100 also allows users to easily remove the clean water box 500 for timely replenishment of cleaning media. Similarly, installing the wastewater box 600 at the bottom of the main body 100 also allows users to easily remove the wastewater box 600 for timely emptying of the cleaning media used to clean the air duct 110. In other words, in some implementations, the clean water box 500 and the wastewater box 600 can be detachably connected to the main body 100.

[0080] The above describes the arrangement of the cleaning device 200 within the main body 100. The following section, in conjunction with the specific structure of the cleaning device 200, will explain how it cleans the air duct 110 and the cleaning fan 300. Regarding the specific structure of the cleaning device 200... Figure 4 A schematic diagram of the cleaning device 200 is shown. Figure 5 An exploded view of the cleaning device 200 is shown. Figure 6 It shows Figure 4 Sectional view along the AA direction. Figure 7 It shows Figure 6 A magnified view of a section at point I, as shown below. Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, in some embodiments, the cleaning device 200 includes a housing 210 and a filler 220. The housing 210 has a first receiving cavity 211 and a water outlet 212. The filler 220 includes a filling portion 222, which is disposed in the first receiving cavity 211. The filling portion 222 is spaced apart from the inner wall of the housing 210, and the gap between the filling portion 222 and the housing 210 forms a water outlet cavity 2112. The water outlet cavity 2112 and the water outlet 212 are connected.

[0081] The housing 210 is the basic component of the entire cleaning device 200. The filler 220 can be installed on the housing 210. The housing 210 has a first receiving cavity 211. The filler 222 fills the first receiving cavity 211, occupying part of the space of the first receiving cavity 211. The filler 222 can be a solid structure or a hollow structure, and there is no specific limitation. The filler 222 is located in the first receiving cavity 211 and occupies part of the space of the first receiving cavity 211, so that the gap between the housing 210 and the filler 222 forms a water outlet cavity 2112. After the cleaning medium enters the water outlet cavity 2112, the volume of the water outlet cavity 2112 becomes smaller, so the pressure of the cleaning medium increases after entering the water outlet cavity 2112. This results in the cleaning medium flowing out of the water outlet 212 having a certain flow velocity, allowing the cleaning medium to flow to a farther place in the air duct 110, which can increase the range to a certain extent.

[0082] In some embodiments, the external shape of the filling part 222 is approximately matched with the shape of the first receiving cavity 211. For example, if the first receiving cavity 211 is triangular, then the external shape of the filling part 222 is also approximately triangular. The size of the filling part 222 and the size of the first receiving cavity 211 can be approximately the same, so that the gap between the filling part 222 and the housing 210 is very small. It can be considered that the gap between the filling part 222 and the housing 210 is a slit, that is, the water outlet cavity 2112 is a slit. When the cleaning medium enters the water outlet cavity 2112, the pressure of the cleaning medium increases because the water outlet cavity 2112 is very narrow. When it flows out of the water outlet 212, it can have a large velocity, so that the cleaning medium can flow to a farther place in the air duct 110, which can increase the range to a certain extent.

[0083] In some embodiments, the housing 210 and / or the filler 220 are provided with a first fixing part 230, the main body 100 is provided with a second fixing part, and the range hood 10 also includes a fixing member, which is fixedly connected to the first fixing part 230 and the second fixing part.

[0084] The first fixing part 230 can be provided only on the housing 210, or it can be provided on the filler 220, or it can be provided on both the housing 210 and the filler 220. When the first fixing part 230 is provided only on the housing 210 or only on the filler 220, the housing 210 and the filler 220 can be fixed as a whole first, and then the whole housing 210 and the filler 220 can be fixed to the rear plate of the air duct 110. If the housing 210 and the filler 220 both have the first fixing part 230, the housing 210 and the filler 220 can be fixed as a whole first, and then the whole can be fixed to the back plate 150 of the air duct 110. Alternatively, the housing 210 and the filler 220 can be separately assembled onto the back plate 150. The specific method is not limited.

[0085] Since the cleaning device 200 is fixed on the back plate 150, and the second fixing part is provided on the back plate 150, a first fixing hole can be provided on the first fixing part 230, and a second fixing hole can be provided on the second fixing part. The fixing member passes through the first fixing hole and the second fixing hole, thereby fixing the filler 220 and the housing 210 to the back plate 150.

[0086] When both the housing 210 and the filler 220 are provided with a first fixing part 230, the fixing part first passes through the first fixing hole of the housing 210, then through the first fixing hole of the filler 220, and finally through the second fixing hole.

[0087] Figure 8 This shows a structural schematic diagram of the housing 210 of the cleaning device 200 from a first-view perspective. Figure 9 A structural schematic diagram of the housing 210 of the cleaning device 200 from a second perspective is shown, as follows. Figure 8 and Figure 9 As shown, in some embodiments, the housing 210 has a first water outlet surface 2131 and a second water outlet surface 2132 arranged opposite to each other. The first water outlet surface 2131 and the second water outlet surface 2132 are inclined upward relative to the height direction of the main body 100, and both the first water outlet surface 2131 and the second water outlet surface 2132 are provided with water outlet holes 212.

[0088] The first water outlet surface 2131 and the second water outlet surface 2132 are respectively disposed on the left and right sides of the housing 210. For ease of description, the first water outlet surface 2131 is defined as being located on the left side of the housing 210, and the second water outlet surface 2132 is defined as being located on the right side of the housing 210. Both the first water outlet surface 2131 and the second water outlet surface 2132 are provided with water outlet holes 212, so that the cleaning medium can be sprayed out from the left and right sides of the housing 210. Compared with only the first water outlet surface 2131 or only the second water outlet surface 2132, the radiation range of the cleaning medium can be increased, thereby increasing the cleaning range of the cleaning device 200.

[0089] The first water outlet surface 2131 is provided with multiple water outlet holes 212, which are arranged along the thickness and height directions of the main body 100, so that the multiple water outlet holes 212 are arranged in a roughly multi-row and multi-column manner on the first water outlet surface 2131, that is, in a roughly matrix arrangement. Similarly, the second water outlet surface 2132 is also provided with multiple water outlet holes 212, which are arranged along the thickness and height directions of the main body 100, so that the multiple water outlet holes 212 are arranged in a roughly multi-row and multi-column manner on the second water outlet surface 2132, that is, in a roughly matrix arrangement. In this arrangement, the multiple water outlet holes 212 can be arranged along the thickness direction of the main body 100, so that the water sprayed from the multiple water outlet holes 212 can flow as far as possible towards the back plate 150, the front panel 140 and the connecting plate 160, thereby increasing the cleaning range. Multiple water outlets 212 are arranged along the height of the main body 100, so that more cleaning media can clean the air duct 110, thereby improving the cleaning effect.

[0090] The first water outlet surface 2131 is inclined upward along the height direction. A water outlet hole 212 is provided on the first water outlet surface 2131, so that the water outlet direction of the water outlet hole 212 on the first water outlet surface 2131 is also inclined upward. When the cleaning medium is sprayed out from the first water outlet surface 2131, it can flow upward and to the left, so that the cleaning medium sprayed out from the first water outlet surface 2131 is roughly parabolic on the left side of the housing 210. This allows the cleaning medium to flow to the upper left first, and can also clean the area above the left side of the air duct 110, thereby increasing the radiation range of the cleaning medium sprayed out from the first water outlet surface 2131 and improving the cleaning range.

[0091] Similarly, the second water outlet surface 2132 is inclined upward along the height direction, and a water outlet hole 212 is provided on the second water outlet surface 2132, so that the water outlet direction of the water outlet hole 212 of the second water outlet surface 2132 is also inclined upward. When the cleaning medium is sprayed from the second water outlet surface 2132, it can flow upward and to the right, so that the cleaning medium sprayed on the second water outlet surface 2132 is roughly parabolic on the right side of the housing 210, so that the cleaning medium flows to the upper right first, and can also clean the area above the right side of the air duct 110, which can increase the radiation range of the cleaning medium sprayed from the second water outlet surface 2132 and increase the cleaning range.

[0092] In some embodiments, the first water outlet surface 2131 and the second water outlet surface 2132 are inclined in a direction close to each other. This makes the upper part of the housing 210 approximately triangular, which can improve the strength of the housing 210.

[0093] In some embodiments, the top of the housing 210 further includes a third water outlet surface 2133, which connects to the first water outlet surface 2131 and the second water outlet surface 2132. The third water outlet surface 2133 is provided with a water outlet hole 212, which is used to clean the fan 300. The fan 300 is disposed above the air duct 110, and the cleaning device 200 can be disposed below the fan 300. The third water outlet surface 2133 on the top of the housing 210 allows the cleaning device 200 to clean the volute of the fan 300 while cleaning the air duct 110, thereby increasing the cleaning range.

[0094] In some other embodiments, the housing 210 also includes a fourth water outlet surface 2134, which is disposed facing the panel 140. Water outlet holes 212 may also be provided on the fourth water outlet surface 2134 to clean the panel 140.

[0095] It should be noted that water outlet holes 212 are provided on the first water outlet surface 2131, the second water outlet surface 2132, the third water outlet surface 2133, and the fourth water outlet surface 2134. The structure of the water outlet holes 212 on the first water outlet surface 2131, the second water outlet surface 2132, the third water outlet surface 2133, and the fourth water outlet surface 2134 is the same. The specific shape and structure of the water outlet holes 212 are described below.

[0096] Figure 10 It shows Figure 7 A magnified view of a section at point II, as shown below. Figure 10 As shown, in some embodiments, the water outlet 212 includes a first water outlet section 2122 and a second water outlet section 2124 that are interconnected. The end of the first water outlet section 2122 that is away from the second water outlet section 2124 is connected to the water outlet cavity 2112. The diameter of the first water outlet section 2122 is larger than the diameter of the second water outlet section 2124. In the first water outlet section 2122 and the second water outlet section 2124, the first water outlet section 2122 is located close to the water outlet cavity 2112, and the second water outlet section 2124 is located away from the water outlet cavity 2112. Both the first water outlet section 2122 and the second water outlet section 2124 are roughly circular, and the diameter of the first water outlet section 2122 is larger than the diameter of the second water outlet section 2124. This allows the cleaning medium to enter the second water outlet section 2124 from the wider channel into the narrower channel, which can increase the flow rate of the cleaning medium. This allows the cleaning medium to be accelerated again in the water outlet hole 212, which can increase the speed of the cleaning medium spray and increase the radiation range of the cleaning medium.

[0097] In the first water outlet section 2122, the diameter of the first water outlet section 2122 gradually decreases in the direction from the water outlet cavity 2112 towards the second water outlet section 2124, while the diameter of the second water outlet section 2124 can remain unchanged in the direction away from the first water outlet section 2122. This allows the channel to gradually shrink as the cleaning medium flows from the first water outlet section 2122 to the second water outlet section 2124, thereby increasing the flow velocity of the cleaning medium. The flow velocity is at its maximum after entering the second water outlet section 2124.

[0098] In some embodiments, the water outlet 212 further includes a third water outlet section 2126, which is connected to the end of the second water outlet section 2124 away from the first water outlet section 2122, and the diameter of the third water outlet section 2126 is larger than the diameter of the second water outlet section 2124.

[0099] The water outlet 212 consists of three sections in sequence, from the water outlet cavity 2112 outwards: a first water outlet section 2122, a second water outlet section 2124, and a third water outlet section 2126. The cleaning medium enters the third water outlet section 2126 from the second water outlet section 2124 through a narrower channel, which helps alleviate some of the pressure on the cleaning medium and prevents excessive velocity. The diameter of the third water outlet section 2126 gradually increases in the direction away from the second water outlet section 2124, making the water outlet 2122 roughly resemble a Venturi tube. The first water outlet section 2122 is a converging tube, the second water outlet section 2124 is the throat, and the third water outlet section 2126 is a diverging tube. This Venturi tube design alters the flow velocity of the cleaning medium, ensuring that the cleaning medium has a certain velocity after flowing out of the water outlet, allowing it to reach a farther area within the air duct 110.

[0100] Figure 11 A third-view structural schematic diagram of the housing 210 of the cleaning device 200 is shown. Figure 12 A structural schematic diagram of the housing 210 of the cleaning device 200 from a fourth perspective is shown, as follows. Figure 11 and Figure 12 As shown, in some embodiments, the housing 210 also has a water inlet chamber 2142 and a connecting hole 215, the water inlet chamber 2142 being connected to the water outlet chamber 2112 through the connecting hole 215; the cleaning device 200 also includes a heating element 240, which is used to heat the cleaning medium in the water inlet chamber 2142.

[0101] Since a lot of oil stains are attached in the air duct 110, the cleaning effect can be improved if the cleaning medium has a certain temperature. That is, the cleaning medium first enters the water inlet chamber 2142, and after the heating element 240 heats the cleaning medium to a certain temperature, the cleaning medium then enters the water outlet chamber 2112 through the connecting hole 215.

[0102] During the cleaning process of the air duct 110, the water pump 400 is started, allowing the cleaning medium in the clean water box 500 to enter the water inlet chamber 2142. In order to allow the cleaning medium to stay in the water inlet chamber 2142 for a longer time, the water inlet chamber 2142 can be set below the water outlet chamber 2112, that is, the water inlet chamber 2142 is set below the first receiving chamber 211. After the cleaning medium enters the water inlet chamber 2142, it will flow from bottom to top against gravity. This setting can increase the residence time of the cleaning medium in the water inlet chamber 2142, so that the cleaning medium can be heated to the set temperature, thereby improving the cleaning effect of the cleaning medium.

[0103] In some embodiments, the cleaning device 200 further includes a water inlet 250 connected to the housing 210 to deliver the cleaning medium into the water inlet chamber 2142.

[0104] The water inlet 250 is located below the water inlet chamber 2142, and the water outlet chamber 2112 is located above the first receiving chamber 211. Under the action of the water pump 400, the cleaning medium enters the water inlet chamber 2142 from below and flows upward, so that the cleaning medium can flow along the longest path of the water inlet chamber 2142 in the height direction of the main body 100. This can prolong the flow time of the cleaning medium in the water inlet chamber 2142, thereby increasing the heat exchange time between the cleaning medium and the heating element 240, so that the cleaning medium can be heated to the set temperature and improve the cleaning effect of the cleaning medium.

[0105] In some embodiments, the water inlet chamber 2142 is generally V-shaped. After the cleaning medium enters the water inlet chamber 2142 from the bottom, the bottom of the water inlet chamber 2142 is very narrow, so the bottom of the water inlet chamber 2142 can hold very little cleaning medium. With this configuration, the cleaning medium can be heated quickly at the moment it enters the water inlet chamber 2142 because the amount is relatively small, which can improve the heating effect of the cleaning medium.

[0106] Regarding the placement of the heating element 240, in some embodiments, the housing 210 includes an outer shell 216, a first partition 217, and a second partition 218. The first partition 217 is disposed inside the outer shell 216, dividing the outer shell 216 into a first receiving cavity 211 and a second receiving cavity 214. The second partition 218 is disposed inside the second receiving cavity 214 and connected to the first partition 217. The second partition 218 and the first partition 217 form a water inlet cavity 2142. The second partition 218, the outer shell 216, and the first partition 217 form a fixed cavity 2144. The heating element 240 is disposed inside the fixed cavity 2144, and a connecting hole 215 is disposed in the first partition 217.

[0107] The first partition 217 is positioned above the second partition 218, which is located within the second receiving cavity 214. The second partition 218 separates the water inlet cavity 2142 from the fixed cavity 2144, and positions the heating element 240 within the fixed cavity 2144, preventing the heating element 240 from directly contacting the cleaning medium. The second partition 218 heats the cleaning medium within the water inlet cavity 2142 through heat conduction. This arrangement reduces corrosion and damage to the heating element 240 caused by the cleaning medium, thereby extending the service life of the heating element 240.

[0108] In some embodiments, the heating element 240 is attached to the second partition 218. Direct attachment of the heating element 240 to the second partition 218 can reduce heat loss of the heating element 240 and improve the heating effect of the cleaning medium.

[0109] Figure 13 It shows Figure 7 A magnified view of a section at point III, as shown below. Figure 13 As shown, in some embodiments, the connecting hole 215 includes a first connecting segment 2152 and a second connecting segment 2154 that are connected to each other. The first connecting segment 2152 is connected to the water inlet chamber 2142, and the second connecting segment 2154 is connected to the water outlet chamber 2112. The diameter of the first connecting segment 2152 is larger than the diameter of the second connecting segment 2154.

[0110] The connecting hole 215 connects the water outlet chamber 2112 and the water inlet chamber 2142, allowing the cleaning medium heated by the heating element 240 to enter the water outlet chamber 2112. In the first connecting section 2152 and the second connecting section 2154, the first connecting section 2152 is located closer to the water inlet chamber 2142, and the second connecting section 2154 is located farther away from the water inlet chamber 2142. Both the first connecting section 2152 and the second connecting section 2154 are roughly circular, and the diameter of the first connecting section 2152 is larger than the diameter of the second connecting section 2154. This allows the cleaning medium to enter from a wider channel into a narrower channel during the process of entering the second connecting section 2154 from the first connecting section 2152, which can increase the flow rate of the cleaning medium. This allows the cleaning medium to be accelerated before entering the water outlet chamber 2112, thereby increasing the flow rate of the cleaning medium.

[0111] In this section, the diameter of the first connecting section 2152 gradually decreases in the direction from the water inlet chamber 2142 toward the second connecting section 2154, while the diameter of the second connecting section 2154 can remain unchanged in the direction away from the first connecting section 2152. This allows the channel to gradually shrink as the cleaning medium flows from the first connecting section 2152 to the second connecting section 2154, thereby increasing the flow velocity of the cleaning medium. The flow velocity is at its maximum after entering the second connecting section 2154.

[0112] In some embodiments, the connecting hole 215 further includes a third connecting segment 2156, which connects the second connecting segment 2154 and the water outlet cavity 2112, and the diameter of the third connecting segment 2156 is larger than the diameter of the second connecting segment 2154.

[0113] The connecting orifice 215, in the direction from the inlet chamber 2142 to the outlet chamber 2112, consists of a first connecting section 2152, a second connecting section 2154, and a third connecting section 2156. The cleaning medium enters from the second connecting section 2154 into the third connecting section 2156 through a narrower channel, which helps alleviate some of the pressure on the cleaning medium. The diameter of the third connecting section 2156 gradually increases in the direction from the inlet chamber 2142 to the outlet chamber 2112, making the connecting orifice 215 roughly resemble a Venturi tube.

[0114] The water outlet 212 consists of three sections in sequence, from the water outlet cavity 2112 outwards: a first water outlet section 2122, a second water outlet section 2124, and a third water outlet section 2126. The cleaning medium enters the third water outlet section 2126 from the second water outlet section 2124 through a narrower channel, which helps alleviate some of the pressure on the cleaning medium and prevents excessive velocity. The diameter of the third water outlet section 2126 gradually increases in the direction away from the second water outlet section 2124, making the water outlet 2122 roughly resemble a Venturi tube. The first water outlet section 2122 is a converging tube, the second water outlet section 2124 is the throat, and the third water outlet section 2126 is a diverging tube. This Venturi tube design alters the flow velocity of the cleaning medium, ensuring that the cleaning medium has a certain velocity after flowing out of the water outlet, allowing it to reach a farther area within the air duct 110.

[0115] Since the connecting hole 215 is also a Venturi tube, the cleaning medium is accelerated by the connecting hole 215 as it enters the outlet chamber 2112 from the inlet chamber 2142. After entering the narrower outlet chamber 2112, it can also be accelerated to a certain extent. Since the outlet hole 212 is also a Venturi tube, the cleaning medium will be accelerated again. During the flow of the cleaning device 200, the cleaning medium can be accelerated multiple times, so that the cleaning medium flowing out of the outlet hole 212 has a certain speed, which allows the cleaning medium to be sprayed to a farther area and to clean more areas in the air duct 110, thereby increasing the cleaning range of the cleaning medium.

[0116] In some embodiments, the filler 220 further includes a connecting portion 224 connected to the filler 222. One side of the second receiving cavity 214 has an opening, which the connecting portion 224 closes. The connecting portion 224 is disposed below the filler 222 to close the opening of the second receiving cavity 214, allowing the second receiving cavity 214 to form a sealed cavity. A first fixing portion 230 may be provided on the connecting portion 224. In addition, the filler 220 also includes a transition portion 226 connecting the filler 222 and the housing 210, allowing the water outlet cavity 2112 to be a sealed cavity.

[0117] It should be noted that the cleaning device 200 mentioned above can be used not only for range hoods 10, but also for other electrical appliances that need cleaning, such as dishwashers and microwave ovens.

[0118] The working principle of the range hood 10 provided in this application embodiment is as follows: In this application embodiment, after the water pump 400 is started, the water pump 400 transports the cleaning medium in the clean water box 500 to the water inlet chamber 2142. After being heated by the heating element 240, the cleaning medium enters the water outlet chamber 2112 after being accelerated once through the connecting hole 215. After being accelerated through the water outlet chamber 2112, the cleaning medium enters the water outlet 212. After being accelerated again through the water outlet 212, the cleaning medium is sprayed to different positions of the air duct 110. During the flow of the cleaning device 200, the cleaning medium can be accelerated multiple times, so that the cleaning medium flowing out of the water outlet 212 has a certain speed, so that the cleaning medium can be sprayed to a farther area, can clean more areas in the air duct 110, and improve the cleaning range of the cleaning medium.

[0119] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0120] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0121] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that, include: The main body (100) has an air duct (110), an air inlet (120) and a mounting cavity (130), wherein the air inlet (120) and the mounting cavity (130) are connected to the air duct (110); A fan (300) is disposed within the mounting cavity (130); A cleaning device (200) is disposed in the air duct (110) and is used at least to clean the inner wall of the air duct (110).

2. The range hood according to claim 1, characterized in that, The main body (100) includes a back plate (150) and a connecting plate (160), the connecting plate (160) is connected to the back plate (150), the back plate (150) and the connecting plate (160) together form the air duct (110), and the cleaning device (200) is installed on the back plate (150).

3. The range hood according to claim 2, characterized in that, The cleaning device (200) is disposed in the middle of the back plate (150) along the width direction of the main body (100).

4. The range hood according to claim 1, characterized in that, The range hood (10) also includes a water pump (400), a clean water box (500), and a wastewater box (600). The water pump (400) is connected to the cleaning device (200). The water pump (400) is used to transport the cleaning medium in the clean water box (500) to the cleaning device (200). The wastewater box (600) is used to receive the cleaning medium sprayed from the cleaning device (200). The clean water box (500) and the wastewater box (600) are arranged side by side at the bottom of the main body (100).

5. The range hood (10) according to any one of claims 1-4, characterized in that, The cleaning device (200) includes: The housing (210) has a first receiving cavity (211) and a water outlet (212); A filler (220) includes a filling part (222) disposed in the first receiving cavity (211). The filling part (222) is spaced apart from the inner wall of the housing (210). The gap between the filling part (222) and the housing (210) forms a water outlet cavity (2112). The water outlet cavity (2112) is connected to the water outlet hole (212).

6. The range hood according to claim 5, characterized in that, The housing (210) and / or the filler (220) are provided with a first fixing part (230), the main body (100) is provided with a second fixing part, and the range hood (10) also includes a fixing member, which is fixedly connected to the first fixing part (230) and the second fixing part.

7. The range hood according to claim 5, characterized in that, The housing (210) has a first water outlet surface (2131) and a second water outlet surface (2132) arranged opposite to each other. The first water outlet surface (2131) and the second water outlet surface (2132) are inclined upward relative to the height direction of the main body (100). Both the first water outlet surface (2131) and the second water outlet surface (2132) are provided with the water outlet hole (212).

8. The range hood according to claim 5, characterized in that, The water outlet (212) includes a first water outlet section (2122), a second water outlet section (2124), and a third water outlet section (2126) that are interconnected. The end of the first water outlet section (2122) away from the second water outlet section (2124) is connected to the water outlet cavity (2112). The third water outlet section (2126) is connected to the end of the second water outlet section (2124) away from the first water outlet section (2122). The diameter of the first water outlet section (2122) is larger than the diameter of the second water outlet section (2124), and the diameter of the third water outlet section (2126) is larger than the diameter of the second water outlet section (2124).

9. The range hood according to claim 5, characterized in that, The housing (210) also has a water inlet cavity (2142) and a connecting hole (215), the water inlet cavity (2142) being connected to the water outlet cavity (2112) through the connecting hole (215); The cleaning device (200) further includes a heating element (240) for heating the cleaning medium in the water inlet chamber (2142).

10. The range hood according to claim 9, characterized in that, The connecting hole (215) includes a first connecting section (2152), a second connecting section (2154), and a third connecting section (2156) that are interconnected. The first connecting section (2152) is connected to the water inlet chamber (2142), the second connecting section (2154) is connected to the water outlet chamber (2112), and the third connecting section (2156) connects the second connecting section (2154) and the water outlet chamber (2112). The diameter of the first connecting section (2152) is larger than the diameter of the second connecting section (2154), and the diameter of the third connecting section (2156) is larger than the diameter of the second connecting section (2154).

Images