Range hood

Abstract

The utility model provides a range hood, belongs to the technical field of range hoods, and aims to solve the technical problem that a related range hood cannot give out early warning when water is accumulated in an electric appliance box. The range hood comprises an electric appliance box, a range hood circuit board, a battery assembly and a warning piece, the range hood circuit board and the battery assembly are both arranged in the electric appliance box, the battery assembly is closer to the bottom of the electric appliance box than the range hood circuit board, and the battery assembly is electrically connected with the warning piece. The anode and the cathode of the battery assembly are connected through the water absorption piece, when water is accumulated in the electric appliance box, the water absorption piece absorbs the water in the electric appliance box, the battery assembly is activated, current is generated between the anode and the cathode, and power is supplied to the warning piece, so that the warning piece gives out early warning to remind a user that the water is accumulated in the electric appliance box; accumulated water in the electric appliance box needs to be cleaned so as to reduce the situation that the circuit board of the range hood is short-circuited.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of range hood, and particularly relate to a range hood. BACKGROUND

[0002] The range hood is usually installed above the kitchen stove, which can output the waste gas burned by the stove and the oil fume generated during the cooking process to the outdoor, thereby improving the air quality of the kitchen.

[0003] In the related art, the range hood includes a housing, a fan, a circuit board and an electrical box. The housing is configured with an air inlet and an air outlet. The fan is arranged in the housing. The electrical box is arranged in the housing. The circuit board is arranged in the electrical box. The fan is electrically connected with the circuit board to control the switching and the wind speed of the fan. When the fan works, the gas such as oil fume flows into the housing from the air inlet and is discharged to the public flue or the outdoor environment from the air outlet.

[0004] However, the gas such as oil fume entering the housing contains a certain amount of water vapor. The water vapor is easy to enter the electrical box from the gap of the electrical box, and is accumulated in the electrical box after being condensed in the interior of the electrical box. Since the related range hood cannot issue a warning when water accumulates in the electrical box, the amount of water in the electrical box gradually increases with the increase of the use time of the range hood, which easily leads to the short circuit of the circuit board and affects the normal use of the range hood. UTILITY MODEL CONTENT

[0005] Embodiments of the present application provide a range hood, which can solve the technical problem that the related range hood cannot issue a warning when water accumulates in the electrical box.

[0006] Embodiments of the present application provide a range hood, which includes:

[0007] a housing;

[0008] an electrical box arranged in the housing;

[0009] a range hood circuit board arranged in the electrical box and spaced apart from the bottom of the electrical box;

[0010] a battery assembly arranged in the electrical box, the battery assembly being closer to the bottom of the electrical box than the range hood circuit board; the battery assembly includes:

[0011] an anode;

[0012] a cathode;

[0013] a water absorbing element connected to the anode and the cathode, respectively, and generating an electric current between the anode and the cathode when absorbing water;

[0014] a warning element electrically connected between the anode and the cathode.

[0015] The range hood of the embodiment of the present application is provided with a battery assembly in the electric appliance box, and the battery assembly is electrically connected with the warning member. The anode and the cathode of the battery assembly are connected through the water absorption member. When water accumulates in the electric appliance box, the water absorption member absorbs the water in the electric appliance box, the battery assembly is activated, and an electric current is generated between the anode and the cathode to supply power to the warning member, so that the warning member issues a pre-warning to remind the user that water accumulates in the electric appliance box and needs to be cleaned to reduce the short circuit of the circuit board of the range hood.

[0016] In some embodiments of the present application, the anode is a magnesium sheet, and the cathode is a copper sheet.

[0017] In this way, the working principle of the battery assembly is based on the electrochemical reaction between magnesium and copper. Magnesium is a kind of active metal with high energy density and low cost, while copper is a kind of stable conductive material. When the battery assembly discharges, the magnesium anode will undergo an oxidation reaction to release electrons; these electrons flow to the copper cathode through the external circuit to undergo a reduction reaction.

[0018] The battery assembly uses magnesium sheets as anode materials with high energy density. Both magnesium sheets and copper sheets are relatively inexpensive and abundant materials. Compared with some other types of batteries, the battery assembly composed of magnesium and copper has less impact on the environment.

[0019] In some embodiments of the present application, the warning member is a warning light.

[0020] In this way, when there is water accumulation in the electric appliance box, the warning light emits light to prompt.

[0021] In some embodiments of the present application, the warning member is a siren or a buzzer.

[0022] In this way, when there is water accumulation in the electric appliance box, the warning member emits sound to prompt.

[0023] In some embodiments of the present application, the warning member is located outside the electric appliance box, and the warning member is arranged on the shell.

[0024] In this way, compared with arranging the warning member in the electric appliance box, arranging the warning member on the shell can enhance the warning effect of the warning member.

[0025] In some embodiments of the present application, the warning member is arranged on the front wall of the shell.

[0026] In this way, the front wall of the shell faces the user, and arranging the warning member on the front wall of the shell makes it easier for the user to hear the sound prompt of the warning member.

[0027] In some embodiments of the present application, the range hood can further include a pre-warning circuit board, the pre-warning circuit board is arranged in the electric appliance box, the pre-warning circuit board is electrically connected with the battery assembly, and the warning member is electrically connected with the pre-warning circuit board.

[0028] In this way, the early warning circuit board is electrically connected with the battery assembly, and the warning member is electrically connected with the early warning circuit board, so that the battery assembly first supplies power to the early warning circuit board, and then indirectly supplies power to the early warning member through the early warning circuit board.

[0029] In some embodiments of the present application, the inner side of the bottom of the electric appliance box is configured to form at least two first connecting protrusions, the first connecting protrusions extend along the height direction of the electric appliance box, and the first connecting protrusions are configured with first connecting holes;

[0030] The early warning circuit board is configured with second connecting holes, and the early warning circuit board is connected to the first connecting protrusions through fasteners arranged in the second connecting holes and the first connecting holes.

[0031] In this way, the early warning circuit board is connected to the first connecting protrusions through fasteners (such as fastening screws or pins) arranged in the second connecting holes and the first connecting holes, so that the early warning circuit board is fixedly connected to the first connecting protrusions.

[0032] In some embodiments of the present application, the inner side of the bottom of the electric appliance box is configured to form at least two support structures, and the support structures include:

[0033] A support portion is connected to the inner side of the bottom of the electric appliance box, and the support portion supports the bottom of the range hood circuit board;

[0034] A limiting portion is connected to the support portion, and the limiting portion stops at the peripheral edge of the range hood circuit board.

[0035] In this way, the support portion supports the bottom of the range hood circuit board, so that there is a gap between the range hood circuit board and the bottom of the electric appliance box, so that when water accumulates at the bottom of the electric appliance box, the water in the electric appliance box does not immediately come into contact with the range hood circuit board, thereby delaying the speed of the range hood circuit board being immersed in water.

[0036] The limiting portion stops at the peripheral edge of the range hood circuit board to limit the range hood circuit board and reduce the swinging of the range hood circuit board in the electric appliance box.

[0037] In some embodiments of the present application, the top of the shell has a top cover, and the top cover is configured with an access hole;

[0038] The outer side of the top cover is detachably connected with a baffle, and the baffle covers the access hole;

[0039] The top of the electric appliance box is configured to form a mounting hole, and the electric appliance box is connected to the top cover, and the mounting hole corresponds to the access hole.

[0040] In this way, when the baffle is detached from the top cover, the baffle opens the access hole at the same time, and the mounting hole is also exposed, so that the electric appliance box can be maintained through the mounting hole. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0042] Figure 1 Structure schematic diagram of the range hood of the embodiment of the present application;

[0043] Figure 2 Structure schematic diagram of the range hood of the embodiment of the present application;

[0044] Figure 3 Structure schematic diagram of the electric appliance box, the range hood circuit board, the battery assembly and the early warning circuit board in the range hood of the embodiment of the present application Figure 1 ;

[0045] Figure 4 Structure schematic diagram of the electric appliance box, the range hood circuit board, the battery assembly and the early warning circuit board in the range hood of the embodiment of the present application Figure 2 ;

[0046] Figure 5 Structure schematic diagram of the electric appliance box, the range hood circuit board, the battery assembly and the early warning circuit board in the range hood of the embodiment of the present application Figure 4 ;

[0047] Figure 6 Structure schematic diagram of the electric appliance box and the range hood circuit board in the range hood of the embodiment of the present application;

[0048] Figure 7 Structure schematic diagram of the electric appliance box in the range hood of the embodiment of the present application;

[0049] Figure 8 Structure schematic diagram of the electric appliance box and the range hood circuit board in the range hood of the embodiment of the present application;

[0050] Figure 9 Structure schematic diagram of the electric appliance box, the range hood circuit board, the battery assembly and the early warning circuit board in the range hood of the embodiment of the present application;

[0051] Figure 10 Structure schematic diagram of the battery assembly and the early warning circuit board in the range hood of the embodiment of the present application.

[0052] Explanation of reference signs:

[0053] 10 - shell;

[0054] 110 - top cover; 111 - access hole;

[0055] 120 - left side plate; 130 - right side plate;

[0056] 140 - back plate; 150 - front wall;

[0057] 20 - electrical box;

[0058] 210 - first connecting protrusion; 211 - first connecting hole;

[0059] 220 - support structure; 221 - support part;

[0060] 222 - limiting part; 230 - mounting opening;

[0061] 240 - second connecting protrusion; 241 - third connecting hole;

[0062] 250 - wire passing gap;

[0063] 30 - circuit board of range hood;

[0064] 301 - fourth connecting hole;

[0065] 40 - battery assembly;

[0066] 410 - anode; 420 - cathode;

[0067] 430 - water absorbing member;

[0068] 50 - warning member;

[0069] 60 - pre-warning circuit board;

[0070] 601 - second connecting hole;

[0071] 70 - fan. DETAILED DESCRIPTION

[0072] In order to make the purpose, implementation and advantages of the present application clearer, the following will combine the drawings in the exemplary embodiments of the present application to make a clear and complete description of the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0073] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0074] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device including a series of components does not have to be limited to the clearly listed components, but can include other components that are not clearly listed or inherent to these products or devices.

[0075] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0076] The terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0077] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0078] For the range hood in the related art, there is a technical problem that it cannot issue a warning when water accumulates in the electric appliance box. The present application provides a range hood, a battery assembly is arranged in the electric appliance box, and the battery assembly is electrically connected with a warning part. The anode and the cathode of the battery assembly are connected through a water absorbing part. When water accumulates in the electric appliance box, the water absorbing part absorbs the water in the electric appliance box, the battery assembly is activated, an electric current is generated between the anode and the cathode, and the warning part is powered to make the warning part issue a warning, reminding the user that water accumulates in the electric appliance box, and the accumulated water in the electric appliance box needs to be cleaned, so as to reduce the short circuit of the range hood circuit board.

[0079] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0080] Reference Figure 1 The range hood of the present application includes a shell 10 and a fan 70.

[0081] The shell 10 is configured with an air inlet and an air outlet. The air inlet is configured to face the cooking appliance. The air outlet is configured to be connected to a public chimney or an external environment through an air outlet pipe.

[0082] The fan 70 is arranged in the shell 10. When the fan 70 is working, the oil fume and other gases flow into the shell 10 from the air inlet, and are discharged to the public chimney or the external environment from the air outlet, so as to output the waste gas generated by the cooking appliance and the oil fume and other gases generated in the cooking process to the external environment, thereby improving the air quality in the kitchen.

[0083] In some possible implementation manners of the embodiments of the present application, referring to Figure 1 and Figure 2 , the top of the shell 10 can be provided with a top cover 110. The top cover 110 can be configured to face the ceiling of the kitchen. The top cover 110 can be substantially horizontal as a whole. That is, after the installation of the range hood is completed, the top cover 110 is substantially flush with the horizontal plane.

[0084] The shell 10 can be provided with a left side plate 120 and a right side plate 130 on two sides thereof. The left side plate 120 and the right side plate 130 can be oppositely arranged. The top of the left side plate 120 and the top of the right side plate 130 are connected to the top cover 110. After the installation of the range hood is completed, the left side plate 120 can be located on the left side of the user, and the right side plate 130 can be located on the right side of the user.

[0085] The shell 10 can be provided with a back plate 140 on the back side thereof. The back plate 140 can face the wall. The two ends of the back plate 140 in the horizontal direction can be connected to the left side plate 120 and the right side plate 130 respectively. The top of the back plate 140 can be connected to the top cover 110.

[0086] The shell 10 can be provided with a front wall 150 on the front side thereof. The front wall 150 can be opposite to the back plate 140. The front wall 150 can be configured to face the user.

[0087] The top cover 110, the back plate 140, the left side plate 120 and the right side plate 130 can enclose the appearance of the shell 10.

[0088] In some possible implementation manners of the embodiments of the present application, referring to Figure 1 and Figure 2 , the range hood can further include an electrical appliance box 20. The electrical appliance box 20 can be arranged in the shell 10, so as to hide the electrical appliance box 20 in the shell 10, thereby improving the decoration of the range hood.

[0089] In some possible implementation manners of the embodiments of the present application, referring to Figure 2 , the top cover 110 can be configured with an inspection opening 111.

[0090] The outer side of the top cover 110 is detachably connected with a baffle which covers the maintenance opening 111. The baffle can be connected with the top cover 110 by fastening bolts. It can be understood that the baffle can also be snap-fitted with the top cover 110, as long as the baffle can be detachably connected with the top cover 110.

[0091] With reference to Figure 2 and Figure 3 , the top of the electric appliance box 20 can be configured with a mounting opening 230, the electric appliance box 20 is arranged in the shell 10, and the electric appliance box 20 is connected with the top cover 110, and the mounting opening 230 corresponds to the maintenance opening 111.

[0092] The electric appliance box 20 and the top cover 110 can be connected by fastening bolts. The mounting opening 230 of the electric appliance box 20 corresponds to the maintenance opening 111, so that when the baffle is detached from the top cover 110, the baffle opens the maintenance opening 111 at the same time, and the mounting opening 230 is also exposed, thereby facilitating the maintenance of the electric appliance box 20 through the mounting opening 230.

[0093] The bottom of the electric appliance box 20 is arranged opposite to the mounting opening 230, and the bottom of the electric appliance box 20 can be substantially flush with the top cover 110. In the implementation mode in which the top cover 110 is horizontal, the bottom of the electric appliance box 20 can also be horizontal.

[0094] In some possible implementation modes of the embodiments of the present application, with reference to Figure 2 and Figure 3 , the range hood can further include a hood circuit board 30, and the hood circuit board 30 can be arranged in the electric appliance box 20. The hood circuit board 30 is arranged in the electric appliance box 20, and the hood circuit board 30 is electrically connected with the fan 70 or other electric appliances of the range hood to control the switching, wind speed, or other functions of the range hood.

[0095] With reference to Figure 4 and Figure 5 , the hood circuit board 30 can be arranged in a spaced manner with the bottom of the electric appliance box 20, so that when water accumulates at the bottom of the electric appliance box 20, the water in the electric appliance box 20 does not immediately come into contact with the hood circuit board 30, thereby delaying the speed of the hood circuit board 30 being immersed in water.

[0096] Exemplarily, with reference to Figure 6 , Figure 7 and Figure 8 , the inner side of the box bottom of the electric appliance box 20 is configured with at least two support structures 220 for supporting the hood circuit board 30. The support structures 220 can be arranged in an integral manner with the electric appliance box 20.

[0097] In some embodiments, with reference to Figure 6 , Figure 7 and Figure 8The support structure 220 can include a support portion 221, which can be a support block or a support column, etc. The support portion 221 can be connected to the inner side of the bottom of the electrical appliance box 20. In the height direction Z of the electrical appliance box 20, the support portion 221 has a certain height. The support portion 221 supports the bottom of the range hood circuit board 30, so that the range hood circuit board 30 has a gap with the bottom of the electrical appliance box 20. When water accumulates on the bottom of the electrical appliance box 20, the water in the electrical appliance box 20 does not immediately come into contact with the range hood circuit board 30, thereby delaying the speed of the range hood circuit board 30 being immersed in water.

[0098] In some embodiments, with reference to Figure 6 、 Figure 7 and Figure 8 , the support structure 220 can further include a limiting portion 222, which can be a limiting block or a limiting column, etc. The limiting portion 222 can be connected to the support portion 221, and the limiting portion 222 stops at the circumferential edge of the range hood circuit board 30 to limit the range hood circuit board 30, thereby reducing the swing of the range hood circuit board 30 in the electrical appliance box 20.

[0099] In some possible implementation manners of the embodiments of the present application, with reference to Figure 3 、 Figure 5 and Figure 7 , the inner side of the bottom of the electrical appliance box 20 is configured to have at least two second connecting convex columns 240, the second connecting convex columns 240 extend in the height direction of the electrical appliance box 20, and the second connecting convex columns 240 are configured to have third connecting holes 241. The second connecting convex columns 240 can be integrally formed with the electrical appliance box 20.

[0100] With reference to Figure 3 , the range hood circuit board 30 can be configured to have fourth connecting holes 301. The range hood circuit board 30 is connected to the second connecting convex columns 240 through fasteners arranged in the third connecting holes 241 and the fourth connecting holes 301, so that the range hood circuit board 30 is fixedly connected to the second connecting convex columns 240.

[0101] The number of the second connecting convex columns 240 can be two or more, so as to improve the stability of the support of the second connecting convex columns 240 to the range hood circuit board 30.

[0102] In some possible implementation manners of the embodiments of the present application, with reference to Figure 1 and Figure 3 , the top of the electrical appliance box 20 can have a wire passing gap 250 for the wire harness to pass through.

[0103] In some possible implementation manners of the embodiments of the present application, with reference to Figure 2 、 Figure 3 、 Figure 4 and Figure 5The range hood can further include a battery assembly 40 disposed in the electrical appliance box 20. The battery assembly 40 can be closer to the bottom of the electrical appliance box 20 than the range hood circuit board 30.

[0104] When the oil fume and other gases enter the electrical appliance box 20 from the wire passing gap 250 of the electrical appliance box 20, the condensed water accumulates on the bottom of the electrical appliance box 20. The battery assembly 40 is in contact with the condensed water earlier than the range hood circuit board 30, so that the condensed water does not contact the range hood circuit board 30 when the early warning element sends a warning, thereby protecting the range hood circuit board 30 from short circuit.

[0105] After the user discovers the warning of the early warning element, the user can turn off the range hood in time, check whether there is a short circuit phenomenon, and remove the baffle after power off to maintain ventilation and evaporate the condensed water in the electrical appliance box 20 naturally. The user can also contact a maintenance personnel in time for repair to avoid the short circuit of the range hood circuit board 30 and damage to the machine and kitchen appliances, and to avoid endangering the safety of people.

[0106] In some possible implementation manners of the embodiments of the present application, referring to Figure 5 , Figure 9 and Figure 10 , the battery assembly 40 can include an anode 410, a cathode 420, and a water absorbing element 430. The anode 410 and the cathode 420 are connected through the water absorbing element 430. The water absorbing element 430 can be a sponge, water absorbing fiber, or other components that can absorb water. When the water absorbing element 430 absorbs water, the battery assembly 40 is activated, and an electric current is generated between the anode 410 and the cathode 420.

[0107] In some embodiments, the anode 410 can be a magnesium sheet, and the cathode 420 can be a copper sheet. The battery assembly 40 is a magnesium-copper battery, and the working principle is based on the electrochemical reaction between magnesium and copper. Magnesium is a kind of active metal with high energy density and low cost, and copper is a kind of stable conductive material. When the battery assembly 40 discharges, the magnesium anode 410 will undergo an oxidation reaction to release electrons, and the electrons will flow to the copper cathode 420 through an external circuit to undergo a reduction reaction.

[0108] The battery assembly 40 uses magnesium sheets as anode 410 materials with high energy density. Magnesium sheets and copper sheets are relatively inexpensive and abundant materials. Compared with some other types of batteries, the battery assembly 40 composed of magnesium and copper has less impact on the environment.

[0109] In other embodiments, the anode 410 can be a zinc sheet, and the cathode 420 can be a copper sheet. The battery assembly 40 is a zinc-copper battery. When the water absorbing element 430 absorbs water, the battery assembly 40 is activated, and in the electrochemical reaction, zinc loses electrons to undergo an oxidation reaction. A reduction reaction occurs on the copper electrode, thereby generating an electric current between the anode 410 and the cathode 420.

[0110] In some possible implementation manners of the embodiments of the present application, referring to Figure 1 The range hood can further include a warning member 50 for emitting sound or light warning. The warning member 50 is electrically connected with the battery assembly 40, and when the battery assembly 40 is activated, the battery assembly 40 can supply power to the warning member 50, so that the warning member 50 can issue a warning to remind the user that water has accumulated in the electrical appliance box 20, and the accumulated water in the electrical appliance box 20 needs to be cleaned to reduce the risk of short circuit of the range hood circuit board 30.

[0111] In some embodiments, the warning member 50 can be a warning light. The warning light can be electrically connected with the battery assembly 40 through a wire. When there is water accumulated in the electrical appliance box 20, the warning light emits light to prompt.

[0112] The warning light can be arranged on the front wall 150 of the shell 10, which faces the user. Arranging the warning light on the front wall 150 of the shell 10 makes it easier for the user to observe the light prompt of the warning light.

[0113] In other embodiments, the warning member 50 can be a siren or a buzzer. The warning member 50 can be electrically connected with the battery assembly 40 through a wire. When there is water accumulated in the electrical appliance box 20, the warning member 50 emits sound to prompt.

[0114] In some possible implementation manners of the embodiments of the present application, the warning member 50 can be arranged in the electrical appliance box 20, which reduces the length of the wire connecting the battery assembly 40 and the warning member 50, and facilitates the assembly of the warning member 50 and the battery assembly 40.

[0115] In some possible implementation manners of the embodiments of the present application, referring to Figure 1 The warning member 50 can be arranged on the front wall 150 of the shell 10, which faces the user. Arranging the warning member 50 on the front wall 150 of the shell 10 makes it easier for the user to hear the sound prompt of the warning member 50.

[0116] In some possible implementation manners of the embodiments of the present application, referring to Figures 2-5 , and Figure 9 and Figure 10 The range hood can further include a pre-warning circuit board 60 arranged in the electrical appliance box 20. The pre-warning circuit board 60 can be farther away from the bottom of the electrical appliance box 20 than the battery assembly 40, so that the battery assembly 40 contacts the condensed water earlier than the pre-warning circuit board 60. When the pre-warning member issues a warning, the condensed water does not contact the pre-warning circuit board 60, which protects the pre-warning circuit board 60 from being easily short-circuited.

[0117] The early warning circuit board 60 is electrically connected with the battery assembly 40, and the warning member 50 is electrically connected with the early warning circuit board 60, so that the battery assembly 40 first supplies power to the early warning circuit board 60, and then indirectly supplies power to the early warning member through the early warning circuit board 60.

[0118] In some embodiments, with reference to Figure 5 , the battery assembly 40 can be close to the bottom of the electric appliance box 20, so that when there is accumulated water at the bottom of the electric appliance box 20, the battery assembly 40 is activated and supplies power to the warning member 50 to make the warning member 50 give a warning.

[0119] In other embodiments, the battery assembly 40 can be arranged to be spaced apart from the bottom of the electric appliance box 20, and the spacing between the battery assembly 40 and the bottom of the electric appliance box 20 can be smaller than the spacing between the circuit board 30 of the smoke machine and the bottom of the electric appliance box 20, so that the battery assembly 40 contacts the condensed water earlier than the circuit board 30 of the smoke machine, and the condensed water does not contact the circuit board 30 of the smoke machine when the early warning member gives a warning, thereby protecting the circuit board 30 of the smoke machine from being easily short-circuited.

[0120] In some possible implementation manners of the embodiments of the present application, with reference to Figure 5 and Figure 9 , the inner side of the bottom of the electric appliance box 20 can be configured to have at least two first connecting protrusions 210, the first connecting protrusions 210 extend along the height direction of the electric appliance box 20, and the first connecting protrusions 210 are configured to have first connecting holes 211, and the axis of the first connecting holes 211 can be substantially parallel to the axis of the first connecting protrusions 210.

[0121] The early warning circuit board 60 can be configured to have second connecting holes 601, and the early warning circuit board 60 is connected to the first connecting protrusions 210 by fasteners (screws or pins, etc.) arranged in the second connecting holes 601 and the first connecting holes 211, so that the early warning circuit board 60 is fixedly connected to the first connecting protrusions 210.

[0122] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0123] For the sake of convenience, the foregoing description has been presented in terms of specific implementations. Again, however, the foregoing discussion is not intended to be exhaustive or to limit the implementations to the precise forms disclosed. Modifications and variations are possible in light of the above teachings. The implementations were chosen and described in order to provide the best illustration of the principles of the application and its practical application, and to thereby enable one of ordinary skill in the art to use the application in various implementations and with various modifications as are suited to the particular use contemplated.

Claims

1. A range hood characterized by, The oil fume machine comprises a shell (10), an electric appliance box (20) arranged in the shell (10), an oil fume machine circuit board (30) arranged in the electric appliance box (20) and spaced from the bottom of the electric appliance box (20), and a battery assembly (40) arranged in the electric appliance box (20) and closer to the bottom of the electric appliance box (20) than the oil fume machine circuit board (30). The battery assembly (40) comprises a positive electrode (410), a negative electrode (420), and a water absorption member (430) connected to the positive electrode (410) and the negative electrode (420) respectively. When the water absorption member (430) absorbs water, an electric current is generated between the positive electrode (410) and the negative electrode (420). An alarm member (50) is electrically connected between the positive electrode (410) and the negative electrode (420). The positive electrode (410) is a magnesium sheet, and the negative electrode (420) is a copper sheet. The alarm member (50) is an alarm lamp. The alarm member (50) is an alarm or a buzzer. The alarm member (50) is located outside the electric appliance box (20) and arranged in the shell (10). The alarm member (50) is arranged on the front wall (150) of the shell (10). The oil fume machine further comprises a pre-warning circuit board (60) arranged in the electric appliance box (20), the pre-warning circuit board (60) being electrically connected to the battery assembly (40), and the alarm member (50) being electrically connected to the pre-warning circuit board (60). The inner side of the bottom of the electric appliance box (20) is configured with at least two first connecting protrusions (210) extending along the height direction of the electric appliance box (20), and the first connecting protrusions (210) are configured with first connecting holes (211). The pre-warning circuit board (60) is configured with second connecting holes (601), and the pre-warning circuit board (60) is connected to the first connecting protrusions (210) by fasteners penetrating the second connecting holes (601) and the first connecting holes (211).

2. The range hood according to claim 1, characterized in that The inner side of the bottom of the electric appliance box (20) is configured with at least two support structures (220), and the support structures (220) comprise support portions (221) connected to the inner side of the bottom of the electric appliance box (20) and supporting the bottom of the oil fume machine circuit board (30), and limiting portions (222) connected to the support portions (221) and stopping the circumferential edge of the oil fume machine circuit board (30).

3. The range hood according to claim 1, characterized in that The top of the shell (10) is provided with a top cover (110) configured with an inspection opening (111).

4. The range hood according to claim 1, characterized in that The outer side of the top cover (110) is detachably connected with a baffle shielding the inspection opening (111).

5. The range hood according to any one of claims 1-4, characterized in that The top of the electric appliance box (20) is configured with a mounting opening (230), the electric appliance box (20) is connected to the top cover (110), and the mounting opening (230) corresponds to the inspection opening (111).

6. The range hood according to any one of claims 1-4, characterized in that ​ 7. The range hood according to any one of claims 1-4, characterized in that ​ 8. The range hood according to claim 7, characterized in that ​ ​ 9. The range hood according to any one of claims 1-4, characterized in that ​ ​ ​ 10. The range hood according to any one of claims 1-4, characterized in that ​ ​ ​

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