Range hood

Abstract

The utility model discloses a range hood, which comprises a box body, the cleaning device comprises a water box assembly, and the water box assembly comprises a water box used for storing a cleaning medium; the two water box assemblies are arranged on the left side and the right side in the box body respectively, each water box assembly is provided with an adapter, the two adapters are connected through a water pipe and are in fluid communication, and the water boxes are detachably connected relative to the box body. Compared with the prior art, the utility model has the advantages that the water box components are arranged from the left side and the right side of the box body, so that the problem that the space of the oil cup is occupied when the water box components are arranged on the front side is solved, the original volume and volume of the oil cup are ensured, and extra oil guide parts are not brought to an oil guide way; and the problem that the water box assembly on the side cannot be taken out for adding water for use due to the fact that the single side of the range hood leans against the wall in some user houses can also be avoided.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

[0002] When cooking in the kitchen, the filter of a range hood will accumulate some oil and grease. Over time, this will clog the filter mesh, affecting the airflow and the range hood's smoke extraction efficiency. Therefore, a self-cleaning device needs to be installed in the range hood.

[0003] Common self-cleaning methods use hot water or steam as the cleaning medium, making a water tank an essential component. The main installation methods for water tanks are as follows:

[0004] 1. The water tank is placed inside the range hood housing, located on the front of the housing: For example, a range hood disclosed in Chinese Patent Application No. 202311093521.1 includes a smoke-collecting module, which comprises a main body and a liquid-discharging module. The liquid-discharging module includes a frame, an oil collection box, a water tank, a hinge, and a cover panel. The frame and the main body are connected. The frame has a first cavity and a second cavity. The oil collection box is located in the first cavity, and the water tank is located in the second cavity. The hinge is located on the frame, and the cover panel is connected to the hinge to conceal and expose the oil collection box and the water tank. This method requires designing a cavity on the front of the housing, which is mostly the space for the oil cup. Placing the water tank here will encroach on the space of the oil cup, resulting in a smaller oil cup volume and potentially requiring additional oil guiding components, increasing costs.

[0005] 2. The water tank is located outside the range hood. When the user wants to use the self-cleaning function, the water tank is connected to the range hood's pre-installed interface via a water pipe for water supply. It is stored elsewhere when not in use. For example, Chinese Patent Application No. 202320444054.1 discloses a smart range hood system based on steam cleaning. The main body of the range hood includes a shell and a flue connected to the shell. The steam cleaning system includes a steam generator and several steam nozzle assemblies. The steam nozzle assemblies are rotatably installed inside the shell and flue, and are connected to the steam generator via pipe assemblies to perform steam cleaning on the inner walls of the shell and flue. The steam generator includes a steam generating chamber and a water replenishment pump and a liquid filling pump located inside the steam generating chamber. In this method, the water tank is separate from the range hood. This type of external water tank occupies the user's storage space, poses a risk of loss, and adds an extra step of connecting the water tank, making the process cumbersome. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a range hood that does not take up space in the oil cup and is easy to handle, in order to address the shortcomings of the existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0008] Box; and

[0009] A cleaning apparatus comprising a water tank assembly, the water tank assembly including a water tank for storing a cleaning medium; characterized in that:

[0010] The water box assembly has two parts, which are respectively located on the left and right sides of the tank. Each water box assembly is equipped with an adapter. The two adapters are connected by a water pipe and are in fluid communication. The water box is detachably connected to the tank.

[0011] The water box assembly is installed from the left and right sides of the housing, which solves the problem of the oil cup space being squeezed when it is set on the front, thus ensuring the original volume and capacity of the oil cup, and not bringing additional oil guiding parts to the oil guiding circuit. At the same time, the design of the dual water box assembly can also avoid the problem that some users cannot take out the water box assembly on the side that is against the wall and cannot be used to add water. In addition, it is also convenient to take out the water box from the left and right sides.

[0012] Furthermore, to facilitate the insertion and removal of the water box, the water box assembly includes a water box seat fixedly installed inside the housing, with an open side of the water box seat and an opening on the wall of the housing corresponding to the open side of the water box seat. The water box is inserted into the water box seat through the opening of the housing from the open side of the water box seat.

[0013] Furthermore, to facilitate the stability of the water box after it is installed and to provide feedback when it is in place, the water box base includes a bottom wall and a peripheral wall formed on the outer periphery of the bottom wall. The end of the peripheral wall away from the bottom wall forms the aforementioned opening. The end of the peripheral wall away from the bottom wall is fixed to the inner wall of the box body. The inner side of the bottom wall is provided with a buckle.

[0014] The water box includes a first side wall near the bottom wall of the water box base and a second side wall away from the bottom wall. The first side wall and the second side wall are arranged opposite to each other. A hook is provided on the outer side of the first side wall of the water box, and the hook can cooperate with the buckle of the water box base.

[0015] To make it easier for users to pick up the water box, a hand-held digging tool is formed on the second side wall.

[0016] Furthermore, to facilitate the supply of water from the water box to the adapter and then to the water pump, the water box base includes a bottom wall and a peripheral wall formed on the outer periphery of the bottom wall. The end of the peripheral wall away from the bottom wall forms the aforementioned open side, and the end of the peripheral wall away from the bottom wall is fixed to the inner wall of the box body.

[0017] A connecting protrusion is formed on the bottom wall of the water box base. The connecting protrusion protrudes outward from the water box base. The connecting protrusion is inserted into the inlet of the corresponding adapter. The adapter and the connecting protrusion are interference-fitted. An outlet is provided at the end of the connecting protrusion away from the bottom wall, so that the connecting protrusion and the adapter can be fluidly connected.

[0018] The water box assembly also includes a suction tube that extends into the water box and the connecting protrusion, thereby enabling fluid communication between the water box and the outlet.

[0019] To facilitate the water suction tube's exit from the water box and prevent it from sliding, the water box includes a first side wall near the bottom wall of the water box base and a second side wall away from the bottom wall. The first and second side walls are arranged opposite to each other. The top of the first side wall is recessed downward to form a latch. The position of the latch corresponds to the connecting protrusion of the water box base. The water suction tube exits the water box through the latch and enters the connecting protrusion.

[0020] To further define the position of the suction pipe, a groove is provided on the outer side of the first sidewall corresponding to the outer periphery of the bayonet.

[0021] The water suction tube includes a tube body, a dispensing nozzle, and a snap-fit ​​plate. The tube body includes a first tube section extending vertically inside the water box and a second tube section extending laterally by bending from the top of the first tube section. The second tube section extends out of the water box from the snap-fit ​​opening. The dispensing nozzle is located at the end of the second tube section away from the first tube section. The dispensing nozzle is located inside the connecting protrusion of the water box seat. The snap-fit ​​plate is located on the outer periphery of the second tube section and snaps into the slot.

[0022] To prevent leakage between the suction pipe and the water box seat, a sealing ring is provided between the outer periphery of the dispensing nozzle or pipe body and the inner wall of the connecting protrusion.

[0023] To facilitate the installation of the water suction pipe into the water box from top to bottom, the water box is an open-top box, and the top of the water box is provided with a water box cover that can be opened and closed.

[0024] To facilitate control of the supply of cleaning media, and since only one side of the water tank assembly is needed during self-cleaning, it is necessary to avoid air leakage in the passage of the unused side of the water tank assembly. The water tank assembly also includes a one-way valve, which includes a valve plate and a valve core. The valve core passes through the outlet at the end of the connecting protrusion and is at least partially located within the connecting protrusion. The valve plate is connected to the valve core and is located in an adapter outside the connecting protrusion.

[0025] The suction pipe can push the one-way valve into the adapter so that the valve plate located outside the connecting protrusion moves away from the outlet, thereby opening the outlet; the one-way valve keeps the outlet closed.

[0026] To facilitate the actuation of the one-way valve by the suction pipe, the one-way valve also includes a baffle connected to the valve core. The suction pipe includes a liquid outlet that cooperates with the baffle. The liquid outlet can abut against the baffle and actuate the one-way valve. The end of the liquid outlet has a notch in the circumferential direction.

[0027] Preferably, the one-way valve further includes a baffle connected to the valve core, and the water box assembly further includes an elastic element, which is sleeved on the outer periphery of the valve core. The elastic element abuts against the end of the connecting protrusion and the baffle, so that the one-way valve tends to close the liquid outlet.

[0028] Preferably, one of the adapters is a two-way adapter and the other is a three-way adapter with two inlets and one outlet. The outlet of the three-way adapter is connected to the water pump of the cleaning device, and the water pipe is connected between the outlet of the two-way adapter and the inlet of the three-way adapter.

[0029] Compared with the prior art, the advantages of this utility model are as follows: the water box assembly is installed from the left and right sides of the housing, which solves the problem of occupying the oil cup space when it is set on the front, thus ensuring the original volume and capacity of the oil cup, and does not bring additional oil guiding parts to the oil guiding path. At the same time, the design of the double water box assembly can also avoid the problem that some users cannot take out the water box assembly on the side that is against the wall and cannot be used to add water. In addition, it is also convenient to take out the water box from the left and right sides. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a range hood according to an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of a range hood according to an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the hidden smoke baffle of a range hood according to an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of one of the water box components (left side) and two-way adapters of the range hood according to an embodiment of the present utility model;

[0034] Figure 5 This is a schematic diagram of another water box assembly (right side) and a three-way adapter of the range hood according to an embodiment of the present invention;

[0035] Figure 6 This is a cross-sectional view of the water box assembly and three-way adapter of the range hood according to an embodiment of the present utility model (with the one-way valve open);

[0036] Figure 7 for Figure 6 A magnified schematic diagram of part I;

[0037] Figure 8 This is an exploded structural diagram of the water box assembly and the three-way adapter of the range hood according to an embodiment of the present utility model;

[0038] Figure 9 This is an exploded view of the one-way valve and water suction pipe of the water box assembly of the range hood according to an embodiment of the present utility model.

[0039] Figure 10 This is a schematic diagram of the water box base of the range hood assembly according to an embodiment of the present utility model;

[0040] Figure 11 This is a schematic diagram of the water box of the range hood water box assembly according to an embodiment of the present utility model;

[0041] Figure 12 This is a cross-sectional view of the water box base and water box of the range hood water box assembly according to an embodiment of the present utility model;

[0042] Figure 13 This is a cross-sectional view of the water box assembly and three-way adapter of the range hood according to an embodiment of the present utility model (the water suction pipe is not installed and the one-way valve is closed);

[0043] Figure 14 for Figure 13 A magnified schematic diagram of part II. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0046] See Figures 1-3A range hood includes a housing 100, a smoke baffle 200 disposed on the front side of the housing 100, and a cleaning device. The front side of the housing 100 has a smoke inlet (not shown), and the smoke baffle 200 can open and close the smoke inlet. The cleaning device can be used to clean the fan (not shown) or the interior cavity of the range hood.

[0047] The cleaning device includes a water box assembly 1, a water pipe 2, and an adapter 3. Two identical water box assemblies 1 can be installed on the left and right sides of the housing 100, respectively. One adapter 3, a three-way adapter, is installed on one of the water box assemblies 1; in this embodiment, it is installed on the right-side water box assembly 1. The other adapter 4, a two-way adapter, is installed on the other water box assembly 1; in this embodiment, it is installed on the left-side water box assembly 1. The water box assemblies 1 are inserted from the left and right sides of the housing 100, solving the problem of encroaching on the oil cup space when installed on the front, thus ensuring the original volume and capacity of the oil cup. The dual water box assembly design also avoids the problem in some users' homes where the water box assembly 1 on one side is against a wall, making it impossible to remove and refill (if there is only one water box assembly 1, and that side happens to need to be against a wall, the entire cleaning device will be unusable). The cleaning device also includes a water pump, a heating device, and nozzles, which are not shown in this embodiment; these components are the same as in the prior art and will not be described further.

[0048] The two water tank assemblies 1 are connected by water pipes 2 to achieve fluid communication. As described above, one adapter 3 is a three-way adapter with two inlets and one outlet, and the other adapter 4 is a two-way adapter with one inlet and one outlet. One end of the water pipe 2 is connected to one of the inlets of the three-way adapter and is in fluid communication, while the other end of the water pipe 2 is connected to the outlet of the two-way adapter and is in fluid communication. Each water tank assembly 1 is connected to the inlet of the corresponding adapter and is in fluid communication. The outlet of the three-way adapter can be connected to a water pump via a water pipe.

[0049] See Figures 5-12Each water box assembly 1 includes a water box 11, a water box seat 12, a water suction pipe 13, a one-way valve 14, an elastic element 15, a sealing ring 16, and a water box cover 17. The water box seat 12 is fixedly disposed inside the housing 100, with one side open, and the outer periphery of the open side is fixed to the wall of the housing 100. The left or right side wall of the housing 100 corresponding to the water box seat 12 has an opening that corresponds to the open side of the water box seat 12, so that the water box seat 12 communicates with the outside of the housing 100. Specifically, the water box seat 12 includes a bottom wall 121 and a peripheral wall 122 formed on the outer periphery of the bottom wall 121. The end of the peripheral wall 122 away from the bottom wall 121 forms the aforementioned open side, and the end of the peripheral wall 122 away from the bottom wall 121 is fixed to the inner wall of the housing 100. A connecting protrusion 123 is formed on the bottom wall 121, protruding outwards from the water box seat 12. The adapter 3 is connected to the connecting protrusion 123, that is, the connecting protrusion 123 is inserted into the inlet of the adapter 3. An interference fit is made between each adapter and the connecting protrusion 123 to achieve a sealed connection. The connecting protrusion 123 is preferably cylindrical, and an outlet 124 is provided at its end away from the bottom wall 121. A buckle 125 is provided on the inner side of the bottom wall 121.

[0050] The water tank 11 is used to store cleaning media, such as water and cleaning fluid. It is detachably connected to the housing 100. In this embodiment, it can be snapped into the water tank seat 12 from the outside of the housing 100 and can be pulled out. The water tank 11 is an open-top box. The water tank cover 17 is located on the top of the water tank 11 and can be rotatably connected to the water tank 11, thereby allowing the water tank 11 to be opened and closed. The water tank 11 includes a first side wall 111 near the bottom wall 121 of the water tank seat 12 and a second side wall 112 away from the bottom wall 121. The first side wall 111 and the second side wall 112 are arranged opposite to each other. In the installed state, the second side wall 112 faces outward from the housing 100. The second side wall 112 of the water tank 11 in the left water tank assembly 1 faces to the left, and the second side wall 112 of the water tank 11 in the right water tank assembly 1 faces to the right. A digging handle 113 is formed on the second side wall 112. The digging handle 113 is formed by recessing the second side wall 112 into the water box 11. It is a one-sided digging handle (recessed in the direction of the first side wall 111 and then recessed in the front or back side). The user's hand can be inserted into the digging handle 113, which makes it easy to pick up and is ergonomic.

[0051] A hook 114 is provided on the outer side of the first side wall 111 of the water box 11. The hook 114 can cooperate with the buckle 125 of the water box seat 12 and is used as feedback when the water box 11 is installed. When the water box 11 is pushed into the water box seat 12, the hook 114 will be engaged in the buckle 125 and make a sound, thus realizing the feedback of installation in place.

[0052] The top of the first sidewall 111 of the water box 11 is recessed downward to form a snap-fit ​​115, the position of which corresponds to the connecting protrusion 123 of the water box seat 12. A groove 116 is also provided on the outer side of the first sidewall 111 corresponding to the outer periphery of the snap-fit ​​115. The suction pipe 13 includes a pipe body 131, a dispensing nozzle 132, and a snap-fit ​​plate 133. The pipe body 131 is bent and includes a first pipe portion 1311 extending vertically within the water box 11 and a second pipe portion 1312 extending horizontally from the top of the first pipe portion 1311. The second pipe portion 1312 extends from the snap-fit ​​115 of the water box 11 out of the water box 11 and into the connecting protrusion 123 of the water box seat 12. The dispensing nozzle 132 is located at the end of the second pipe portion 1312 away from the first pipe portion 1311. The dispensing nozzle 132 and the pipe body 131 can be integrally formed. The dispensing nozzle 132 is located within the connecting protrusion 123 of the water tank base 12. A sealing ring 16, as described above, is provided between the outer periphery of the dispensing nozzle 132 (or the tube body 131) and the inner wall of the connecting protrusion 123 to prevent leakage. A snap-fit ​​plate 133 is located on the outer periphery of the second tube section 1312 and snaps into the snap-fit ​​groove 116, thereby fixing the suction tube 13 to the water tank 11.

[0053] During installation, the water box cover 17 can be opened first, and the suction tube 13 can be inserted into the water box 11 from top to bottom. This allows the suction tube 13 to be snapped into the slot 115, and the snap plate 133 to snap into the groove 116. Thus, the water box 11 horizontally defines the position of the suction tube 13. When the water box 11 is pushed into the water box seat 12, the dispensing nozzle 132 enters the connecting protrusion 123 of the water box seat 12. The sealing ring 16 on the outer periphery of the tube body 131 or the dispensing nozzle 132 is thus pressed against the wall of the connecting protrusion 123 to achieve a seal.

[0054] The one-way valve 14 includes a valve plate 141, a valve core 142, and a baffle 143. The valve core 142 is rod-shaped and passes through the outlet 124 at the end of the connecting protrusion 123, at least partially located within the connecting protrusion 123. The valve plate 141 and the baffle 143 are respectively disposed at opposite ends of the valve core 142. The baffle 143 is located within the connecting protrusion 123 and is used to cooperate with the outlet 132 of the suction pipe 13. The valve plate 141 remains outside the connecting protrusion 123 (within the adapter 3) and is used to open and close the outlet 124 of the connecting protrusion 123. The one-way valve 14 allows the cleaning medium to enter the adapter 3 only from the water box assembly 1. The end of the outlet 132 has a notch 134 in the circumferential direction. When the one-way valve 14 is closed, the valve plate 141 located within the adapter 3 abuts against the end of the connecting protrusion 123 to close the outlet 124. When the one-way valve 14 is opened, the valve plate 141 located outside the connecting protrusion 123 moves away from the connecting protrusion 123, thereby opening the outlet 124. At this time, the baffle 143 located inside the connecting protrusion 123 abuts against the outlet nozzle 132, and the cleaning medium drawn from the water box 11 by the suction pipe 13 (powered by an external water pump) flows out from the notch 134 of the outlet nozzle 132 into the connecting protrusion 123.

[0055] The size of the valve core 142 is smaller than that of the outlet 124, while the size of the valve plate 141 is larger than that of the outlet 124. This allows the cleaning medium from the suction pipe 13 to enter the connecting protrusion 123 when the check valve 14 is in the open state, and then pass through the gap between the outlet 124 and the valve core 142 into the adapter 3. When the check valve 14 is in the closed state, the valve plate 141 can close the outlet 124.

[0056] The elastic element 15 is preferably a spring, which is sleeved on the outer periphery of the valve core 142 and abuts against the end of the connecting protrusion 123 and the baffle 143 respectively, so that the one-way valve 14 tends to keep the outlet 124 closed.

[0057] The opening of the aforementioned one-way valve 14 can be achieved through the installation of the suction pipe 13 or the water box 11. That is, see [link to relevant documentation]. Figure 13 and Figure 14 When the water tank 11 is not equipped with the suction pipe 13, or when neither the water tank 11 nor the suction pipe 13 is installed, the one-way valve 14 is closed under the action of the elastic element 15. (See also...) Figure 6 and Figure 7When the water box 11 and the suction pipe 13 are installed into the water box seat 12, or when the suction pipe 13 is installed while the water box 11 is in the installed state (installation is performed with the water box 11 removed from the water box seat 12), the outlet 132 of the suction pipe 13 will push against the baffle 143 of the one-way valve 14 when the water box 11 is installed. When the water box 11 is in place, the outlet 132 of the suction pipe 13 will completely push the one-way valve 14 open and disengage from the outlet 124, thereby allowing fluid communication between the water box 11 and the adapter 3. At this time, the elastic element 15 is in a compressed state. Once the suction pipe 13 leaves the one-way valve 14, the one-way valve 14 can be reset to the closed state under the restoring force of the elastic element 15.

[0058] When using the self-cleaning function of the range hood, only one side of the water box assembly 1 is needed. To ensure the airtightness of the overall water circuit, the other side of the water box 11 should not be installed, or the water suction pipe 13 should be unplugged and then reinstalled, so that the corresponding one-way valve 14 is in the closed state.

[0059] Furthermore, for cases where the range hood is installed against a wall on one side in a user's home, the water box 11 of the water box assembly 1 on the side against the wall can be left uninstalled, or the water suction pipe 13 can be unplugged and then reinstalled, so that the corresponding one-way valve 14 is in the closed state.

[0060] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A range hood, comprising: a cabinet (100); and a cleaning device comprising a water box assembly (1) including a water box (11) for storing a cleaning medium; characterized in that: the water box assembly (1) has two, respectively arranged on the left and right sides in the cabinet (100), each water box assembly (1) is provided with an adapter (3), and the two adapters (3) are connected in fluid communication through a water pipe (2), and the water box (11) is detachably connected relative to the cabinet (100).

2. The hood according to claim 1, characterized in that: the water box assembly (1) includes a water box seat (12) fixedly arranged in the cabinet (100), one side of the water box seat (12) is open, a wall surface of the cabinet (100) corresponding to the open side of the water box seat (12) is open, and the water box (11) is loaded into the water box seat (12) from the open side of the water box seat (12) through the opening of the cabinet (100).

3. The hood according to claim 2, characterized in that: the water box seat (12) includes a bottom wall (121) and a peripheral wall (122) formed on the outer periphery of the bottom wall (121), the end of the peripheral wall (122) away from the bottom wall (121) forms the above-mentioned opening, the end of the peripheral wall (122) away from the bottom wall (121) is fixed to the inner side wall surface of the cabinet (100), and the inner side of the bottom wall (121) is provided with a buckle (125); the water box (11) includes a first side wall (111) close to the bottom wall (121) of the water box seat (12) and a second side wall (112) away from the bottom wall (121), the first side wall (111) and the second side wall (112) are oppositely arranged, the outer side of the first side wall (111) of the water box (11) is provided with a hook (114), and the hook (114) can cooperate with the buckle (125) of the water box seat (12).

4. The hood according to claim 3, characterized in that: a hand hole (113) is formed on the second side wall (112) for hand holding.

5. The hood according to claim 2, characterized in that: the water box seat (12) includes a bottom wall (121) and a peripheral wall (122) formed on the outer periphery of the bottom wall (121), the end of the peripheral wall (122) away from the bottom wall (121) forms the above-mentioned open side, and the end of the peripheral wall (122) away from the bottom wall (121) is fixed to the inner side wall surface of the cabinet (100); a connecting protrusion (123) is formed on the bottom wall (121) of the water box seat (12), the connecting protrusion (123) protrudes outward from the water box seat (12), the connecting protrusion (123) is inserted into the inlet of the corresponding adapter (3), the adapter (3) and the connecting protrusion (123) are in interference fit, and the end of the connecting protrusion (123) away from the bottom wall (121) is provided with a liquid outlet (124) so that the connecting protrusion (123) and the adapter (3) can be in fluid communication; the water box assembly (1) further includes a water suction pipe (13) extending into the water box (11) and the connecting protrusion (123), so that the water box (11) and the liquid outlet (124) can be in fluid communication.

6. The hood according to claim 5, characterized in that: The water box (11) comprises a first side wall (111) close to the bottom wall (121) of the water box seat (12) and a second side wall (112) away from the bottom wall (121), the first side wall (111) and the second side wall (112) are oppositely arranged, the top of the first side wall (111) is concave downward to form a bayonet (115), the position of the bayonet (115) corresponds to the connecting protrusion (123) of the water box seat (12), and the water suction pipe (13) extends out of the water box (11) from the bayonet (115) and enters the connecting protrusion (123).

7. The hood according to claim 6, characterized in that: The outer side of the first side wall (111) is provided with a clamping groove (116) corresponding to the outer periphery of the bayonet (115). The water suction pipe (13) comprises a pipe body (131), a liquid outlet nozzle (132) and a clamping plate (133), the pipe body (131) comprises a first pipe part (1311) extending vertically in the water box (11) and a second pipe part (1312) extending transversely by bending the top end of the first pipe part (1311), the second pipe part (1312) extends out of the water box (11) from the bayonet (115) of the water box (11), the liquid outlet nozzle (132) is arranged at the end of the second pipe part (1312) away from the first pipe part (1311), the liquid outlet nozzle (132) is located in the connecting protrusion (123) of the water box seat (12), and the clamping plate (133) is located at the outer periphery of the second pipe part (1312) and clamped into the clamping groove (116).

8. The hood according to claim 7, characterized in that: A sealing ring (16) is arranged between the outer periphery of the liquid outlet nozzle (132) or the pipe body (131) and the inner wall of the connecting protrusion (123).

9. The hood according to claim 6, characterized in that: The water box (11) is a box body with an open top, and the top of the water box (11) is provided with a water box cover (17) capable of opening and closing the water box (11).

10. The hood according to claim 5, characterized in that: The water box assembly (1) further comprises a one-way valve (14), the one-way valve (14) comprises a valve plate (141) and a valve core (142), the valve core (142) passes through the liquid outlet (124) at the end of the connecting protrusion (123) and is at least partially located in the connecting protrusion (123), and the valve plate (141) is connected with the valve core (142) and located in the adapter (3) outside the connecting protrusion (123). The water suction pipe (13) can push the one-way valve (14) into the adapter (3) to make the valve plate (141) outside the connecting protrusion (123) away from the liquid outlet (124), thereby opening the liquid outlet (124); the one-way valve (14) keeps the state of closing the liquid outlet (124).

11. The hood according to claim 10, characterized in that: The one-way valve (14) further comprises a baffle (143) connected to the valve core (142), the water suction pipe (13) comprises a liquid outlet nozzle (132) matched with the baffle (143), the liquid outlet nozzle (132) can abut against the baffle (143) to push the one-way valve (14), and the end of the liquid outlet nozzle (132) has a notch (134) in the circumferential direction.

12. The hood according to claim 10, characterized in that: The one-way valve (14) further comprises a baffle (143) connected to the valve core (142), and the water box assembly (1) further comprises an elastic member (15) sleeved on the outer periphery of the valve core (142), and the elastic member (15) is in abutment with the end of the connecting protrusion (123) and the baffle (143) respectively, so that the one-way valve (14) maintains the tendency of closing the liquid outlet (124).

13. The hood according to claim 1, characterized in that: One of the adapters (3) is a two-way adapter, and the other adapter (3) is a three-way adapter having two inlets and one outlet, the outlet of the three-way adapter being connected to a water pump of the cleaning device, and the water pipe (2) being connected between the outlet of the two-way adapter and the inlet of the three-way adapter.

Images