Water tank and cleaning electric appliance

Abstract

The utility model discloses a water tank and a cleaning electric appliance, the water tank comprises a tank body, a tank cover, a water inlet pipeline and an electrode plate, and the tank body is provided with an accommodating cavity; the box cover is connected to the box body and seals the containing cavity. The water inlet pipeline is used for conveying liquid to the accommodating cavity; the electrode plate is located in the containing cavity and close to the box cover, the electrode plate comprises a connecting section and a detecting section, the connecting section is connected to the box body and / or the box cover, the detecting section is used for detecting the water level, the included angle between the connecting section and the detecting section is an obtuse angle, and the detecting section is located on the side, away from the box cover, of the connecting section; wherein the water tank has a first use state and a second use state, and in the first use state, the connection section is located above the detection section; and in the second use state, the detection section is located above the connection section. When the water tank is in the second use state, the detection section makes contact with water in the water tank later than the connection section, and a water level alarm can be given out when the water storage amount is larger, so that the frequency of pouring water out of the water tank by a user can be reduced, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning appliances, in particular to a water tank and a cleaning appliance. Background Art

[0002] For water tanks with water level detection and alarm functions, the alarm water level is generally detected by setting electrodes inside the water tank. For example, the water tank of a floor scrubber has multiple states such as vertical use and tilted use according to different usage scenarios. When used vertically, the alarm water level will be reached only when the water storage inside the water tank reaches a large amount. When used at a large angle, when the water storage inside the water tank is small, the water has already contacted the electrode, causing the water storage to reach the alarm water level when it reaches a small amount, resulting in a false alarm and causing the machine to stop. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a water tank, which can effectively reduce the occurrence of false alarms and shutdowns when the water tank is tilted at a large angle.

[0004] The utility model also provides a cleaning appliance with the water tank.

[0005] The water tank according to the first embodiment of the utility model is applied to a cleaning appliance and includes:

[0006] The box body is provided with a containing cavity;

[0007] A box cover, connected to the box body and closing the accommodating cavity;

[0008] A water inlet pipe, used for conveying liquid to the containing chamber;

[0009] an electrode sheet, located in the accommodating cavity and close to the box cover, the electrode sheet comprising a connecting section and a detecting section, the connecting section being connected to the box body and / or the box cover, the detecting section being used to detect the water level, the angle between the connecting section and the detecting section being an obtuse angle, and the detecting section being located on a side of the connecting section away from the box cover;

[0010] The water tank has a first use state and a second use state. In the first use state, the connecting section is located above the detecting section; in the second use state, the detecting section is located above the connecting section.

[0011] According to the water tank of the embodiment of the utility model, at least the following beneficial effects are achieved: the water tank is provided with an electrode sheet, the water level is detected and an alarm is issued through the electrode sheet, the electrode sheet is provided with a connecting section and a detecting section, the connecting section of the electrode sheet is used to connect the box cover and the detecting section, the detecting section of the electrode sheet is used to calibrate the capacity of the water tank, and the angle between the connecting section and the detecting section is an obtuse angle. When the water tank is in the second use state, that is, the water tank is tilted at a large angle, the detecting section of the electrode sheet is biased upward, so that the detecting section is located above the connecting section, that is, the detecting section contacts the water in the water tank later than the connecting section. In the second use state, compared with the solution in which the electrode sheet is a straight structure as a whole, the water tank of the utility model embodiment will issue a water level alarm only when the water storage capacity is greater, effectively avoiding the occurrence of a false alarm and shutdown when the water tank is tilted at a large angle; when the water tank is in the first use state, that is, the water tank is used vertically or nearly vertically, the electrode sheet normally detects the water level in the water tank, and the detecting section of the electrode sheet contacts the water in the water tank earlier than the connecting section.

[0012] According to some embodiments of the utility model, the water inlet pipe is provided with a water outlet end, and the water outlet end is oriented in a direction away from the box cover.

[0013] According to some embodiments of the present utility model, the water tank further includes a baffle, and the baffle is located between the electrode sheet and the water outlet.

[0014] According to some embodiments of the utility model, the box cover is provided with an air return port connected to the accommodating cavity, the air return port and the water outlet are located on the same side of the baffle, the baffle includes a first water retaining section and a second water retaining section, the first water retaining section is located on a side of the second water retaining section close to the box cover, the second water retaining section is located at an end of the baffle away from the box cover, and the maximum distance L1 between the first water retaining section and the central axis of the water outlet is less than the minimum distance L2 between the second water retaining section and the central axis of the water outlet.

[0015] According to some embodiments of the present invention, the second water retaining section is parallel to the detection section.

[0016] According to some embodiments of the utility model, in the direction away from the box cover, the electrode sheet and the water outlet protrude from the baffle, and on the projection plane perpendicular to the arrangement direction of the baffle and the electrode sheet, the electrode sheet and the water outlet are staggered.

[0017] According to some embodiments of the present invention, the angle between the connecting section and the detecting section is α, which satisfies 170°≤α≤178°.

[0018] According to some embodiments of the utility model, the water inlet pipe is passed through the baffle, and in the first usage state, the cleaning appliance is in a vertical state, the water tank is located at the front side of the cleaning appliance, and the detection section is inclined from the lower end of the connecting section to the front side of the cleaning appliance; in the second usage state, the cleaning appliance is in a backward tilted state, and the inclination angle relative to the position of the cleaning appliance in the vertical state is greater than or equal to 80°.

[0019] According to some embodiments of the present utility model, an insulating member is sleeved on the electrode sheet, and at least a portion of the detection section protrudes from the insulating member.

[0020] The cleaning appliance according to the second embodiment of the utility model comprises:

[0021] A water tank as in the first embodiment of the utility model.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 A schematic diagram of a water tank according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A cross-sectional view of the water tank shown in a first use state;

[0026] Figure 3 for Figure 2 A partial enlarged view of A of the water tank shown;

[0027] Figure 4 for Figure 1 A cross-sectional view of the water tank shown in a second use state;

[0028] Figure 5 for Figure 1 The schematic diagram of the assembly formed by assembling the water tank cover, the electrode sheet, the water inlet pipe and the baffle;

[0029] Figure 6 for Figure 4 A front view of the assembly is shown;

[0030] Figure 7 for Figure 4 A side view of the assembly is shown;

[0031] Figure 8The figure is a schematic diagram of a cleaning appliance according to an embodiment of the utility model.

[0032] Reference numerals:

[0033] Water tank 100, box body 110, accommodating chamber 111, box cover 120, air return port 121, water inlet pipe 130, water outlet end 131, guide part 132, water inlet end 133, baffle 134, first water retaining section 135, second water retaining section 136, electrode sheet 140, connecting section 141, detection section 142, insulating member 143, enclosure 150, filter 160, fuselage 200, clean water tank 210, floor brush 220. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] For water tanks with water level detection and alarm functions, the alarm water level is generally detected by setting an electrode sheet inside the water tank. For example, the water tank of a floor scrubber has an electrode sheet inside the water tank, and the sewage alarm water level in the water tank is detected by the electrode sheet. When the water tank is used vertically or nearly vertically, the internal water storage reaches a large amount before reaching the alarm water level. When the water tank is used at a large angle, the internal water storage reaches a small amount, and the water has already contacted the electrode sheet. For example, the electrode sheet is set at the top of the water tank and is located near the central axis. When the water tank is placed vertically or nearly vertically, the water storage capacity of the water tank reaches three-quarters of the water tank capacity, and the water surface contacts the detection position of the electrode sheet and triggers the alarm. When the water tank is placed at a large angle, such as lying flat, the water storage capacity of the water tank reaches one-half of the water tank capacity, and the water surface contacts the detection position of the electrode sheet, thereby triggering the alarm prematurely, resulting in the alarm water level being reached when the water storage capacity reaches a small amount, and a false alarm occurs.

[0039] In view of the technical problems existing in the prior art, the utility model proposes a water tank, in which the electrode sheet is designed so that the connection section and the detection section have an angle, and the angle is an obtuse angle, that is, the detection section is bent on one side close to the tank cover. When the water tank is in the first use state, that is, the vertical state or the state close to the vertical state, the detection section of the electrode sheet normally detects the water level in the water tank, and an alarm is issued when the water level in the water tank reaches the preset capacity of the water tank; when the water tank is in the second use state, that is, the state of large-angle inclination or lying flat, the detection section of the electrode sheet will only issue an alarm when the water tank reaches a larger water capacity, effectively reducing the occurrence of false alarms of the water tank.

[0040] The water tank proposed in the utility model is a water tank with a water storage function and an electrode sheet for water level alarm. In specific applications, it can be a water tank in a floor scrubber or a household water storage tank. A floor scrubber needs to be used at a large angle when cleaning the corners of furniture, and a household water storage tank needs to be used at a large angle in some places with limited placement space. The following example of the water tank being applied to a floor scrubber is used as an illustration.

[0041] Reference Figures 1 to 4 The water tank 100 provided in the first embodiment of the utility model includes a tank body 110 , a tank cover 120 , a water inlet pipe 130 and an electrode sheet 140 .

[0042] It is understandable that a receiving chamber 111 is provided inside the box body 110 , the box cover 120 is connected to the box body 110 and can close the receiving chamber 111 , and the water inlet pipe 130 is used to transport liquid to the receiving chamber 111 .

[0043] It can be understood that the electrode sheet 140 is located in the accommodating cavity 111 and close to the box cover 120. The electrode sheet 140 includes a connecting section 141 and a detection section 142, wherein the connecting section 141 is connected to the box body 110 and / or the box cover 120. There are three connection modes of the connecting section 141. The first connection mode is that the connecting section 141 is connected to the box body 110, the second connection mode is that the connecting section 141 is connected to the box cover 120, and the third connection mode is that the connecting section 141 is connected to both the box body 110 and the box cover 120. It should be noted that the connection mode of the connecting section 141 is not limited to the above three modes, and there may be other connection modes, for example, the connecting section 141 is connected to the box body 110 and / or the box cover 120 through other connecting components.

[0044] It can be understood that the detection section 142 is used to detect the water level, and the angle between the connecting section 141 and the detection section 142 is an obtuse angle. In the embodiment provided by the present utility model, Figure 2 and Figure 4 As shown, the angle α between the connecting section 141 and the detection section 142 satisfies 170°≤α≤178°. This design can effectively increase the water capacity of the water tank 100 when used at a large angle without affecting the structural strength of the electrode sheet 140, that is, the electrode sheet 140 will not contact the water in the water tank 100 too early when used at a large angle, and the bent electrode sheet 140 will not affect the normal water capacity of the water tank when the water tank 100 is used normally. When the angle α is less than 170°, the structural strength of the electrode sheet 140 will be reduced, the difficulty of processing and forming will increase, and it will be easier to break than the straight electrode sheet 140. And when the angle α is less than 170°, the alarm function it plays is similar to the liquid level alarm of the straight electrode sheet 140 before the improvement, which is easy to cause water backflow without alarm. When the angle α is greater than 178°, the water capacity of the water tank 100 cannot be effectively increased when used at a large angle. The detection section 142 is located on a side of the connecting section 141 away from the tank cover 120, wherein the water tank 100 has a first usage state and a second usage state. In the first usage state, the connecting section 141 is located above the detection section 142, and in the second usage state, the detection section 142 is located above the connecting section 141.

[0045] It should be noted that if Figure 2 , Figure 3 and Figure 8As shown, in the first use state, the water tank 100 can be in a vertical state or a nearly vertical state. When the water tank 100 is in a vertical state, this state corresponds to the state in which the cleaning appliance is used vertically. When the water tank 100 is in a nearly vertical state, the length direction of the water tank has a small angle with the vertical direction. Generally, the length direction of the water tank 100 and the vertical direction have an angle less than 45°, which is positioned as a nearly vertical state. In a specific application scenario, the water tank 100 in the first use state is located at the front side of the cleaning appliance, and the detection section 142 is inclined from the lower end of the connecting section 141 toward the front side of the cleaning appliance. Figure 4 and Figure 8 As shown, the second use state can be a state where the water tank 100 is used at a large angle, that is, the water tank 100 is placed at a large angle or in a horizontal direction. Generally, the angle between the length direction of the water tank 100 and the vertical direction is greater than 60°, which is defined as a large angle tilted placement. This state corresponds to the state where the cleaning appliance is used at an angle. In a specific application scenario, the cleaning appliance in the second use state is in a backward tilted state, and the tilt angle relative to the position of the cleaning appliance in a vertical state is greater than or equal to 80°.

[0046] It is understandable that when in the first use state, the water level marked by the electrode sheet 140 is the water level when used vertically; when in the second use state, the water level marked by the electrode sheet is the water level when used tilted. Compared with the existing water tank, the water tank 100 provided by the embodiment of the utility model has a larger water level capacity when used at a large angle, and is less likely to cause false alarms and cause the machine to stop, which means that users do not need to pour water frequently, which is more convenient to use and provides a better user experience.

[0047] It should be noted that, in some embodiments, the water tank provided by the embodiments of the utility model can also be applied to a top-spray type floor scrubber. The difference between a top-spray type floor scrubber and the above-mentioned floor scrubber is that the water tank of the top-spray type floor scrubber is provided with a water inlet channel, which is located in the accommodating cavity. The water inlet end of the water inlet channel is located at the bottom of the water tank, and the water outlet end is located in the accommodating cavity and faces the top of the water tank. When the sewage enters the water inlet channel from the water inlet end, it will be sprayed out from the water outlet end and hit the top of the water tank.

[0048] Reference Figures 2 to 4, the water inlet pipe 130 is provided with a water outlet 131, and the water outlet 131 is located in the accommodating chamber 111. The water outlet 131 is oriented away from the box cover 120. When sewage is sprayed out from the water outlet 131, it is not easy to splash onto the electrode sheet 140. The water tank 100 also includes a baffle 134, and the baffle 134 is located between the electrode sheet 140 and the water outlet 131. When sewage is sprayed out from the water outlet 131, most of it will be blocked by the baffle 134 and is not easy to splash onto the electrode sheet 140. The box cover 120 is provided with an air return port 121 connected to the accommodating chamber 111. The water tank 100 has a first direction and a second direction perpendicular to each other. The air return port 121 and the water outlet 131 are arranged along the first direction, and the water outlet 131 is oriented away from the air return port 121; in the second direction, the air return port 121 and the water outlet 131 are located on the same side of the baffle 134. Figures 2 to 4 As shown, the advantage of such a design is that the sewage enters the accommodating chamber 111 from the water outlet 131 far away from the return air port 121, and the water sprayed from the water outlet 131 is not easy to enter the return air port 121; at the same time, the return air port 121 and the water outlet 131 are located on the same side of the baffle 134, so that when used at a large angle, the sewage is blocked by the baffle 134, the water level of the water outlet 131 is higher than the highest water level of the sewage, and the sewage sprayed from the water outlet 131 can also suppress the shaking water surface, and the sewage is not easy to flow back to the water outlet 131.

[0049] It is understandable that after the sewage is sprayed out from the water outlet 131, it will be blocked by the baffle 134 and will not easily flow to the return air port 121 or flow back to the water inlet pipe 130. Figure 2 As shown in the figure, the first direction is the up-down direction shown in the figure, and the second direction is the front-back direction shown in the figure; Figure 4 As shown, the first direction is the length direction of the water tank shown in the figure, and the second direction is the direction perpendicular to the length direction of the water tank.

[0050] It can be understood that the improved structure of the water tank 100 provided in the embodiment of the first aspect of the utility model has a high space utilization rate in the water tank 100 when used normally vertically, and the setting of the baffle 134 will not occupy too much space in the accommodating cavity 111; when used at a large angle, the baffle 134 can effectively prevent sewage backflow and overflow.

[0051] It should be noted that “the air return port 121 and the water outlet 131 are arranged along the first direction, and the water outlet 131 is oriented away from the air return port 121” can be arranged in several ways. Figure 2 As shown, the water outlet end 131 may be arranged perpendicular to the bottom of the water tank 100 ; in other embodiments, the water outlet end 131 may have a certain inclination angle, inclining toward the side close to the baffle 134 or inclining toward the side away from the baffle 134 .

[0052] It should be noted that if Figure 2 and Figure 4 As shown, the box cover 120 of the water tank 100 provided by the embodiment of the first aspect of the utility model can be detachably mounted on the box body 110, for example, it can be mounted by snap fasteners, and it is easy to disassemble. The water inlet pipe 130 is arranged on the box cover 120, and the water inlet pipe 130 presents an L-shaped structure. The installation method of the water tank 100 is front installation, and the water inlet end 133 of the water inlet pipe 130 is located at the rear of the box body 110. The water inlet pipe 130 and the baffle 134 are both installed on the box cover 120. This arrangement allows the water inlet pipe 130 and the baffle 134 to be removed together with the box cover 120. The product has a high degree of integration and is easy to remove for cleaning. The structure is concentrated on the box cover 120, and the box body 110 is empty, which does not affect the utilization rate of the water tank 100 during normal use.

[0053] It should be noted that the water inlet pipe 130 is passed through the baffle 134, and the water inlet end 133 of the water inlet pipe 130 is located on the side of the baffle 134 away from the water outlet end 131. Since the water tank 100 provided in the embodiment of the first aspect of the utility model is a pre-water tank 100, that is, installed in front of the clean water tank 210, the water inlet end 133 is arranged on the side of the baffle 134 away from the water outlet end 131, which effectively reduces the setting of the pipeline. When the water tank 100 is used at a large angle, the water outlet end 131 is located at the top, and the water inlet end 133 is correspondingly arranged at the bottom, and the sewage entering from the water inlet end 133 will gradually decrease.

[0054] It should be noted that, in other embodiments, the water inlet pipe 130 can be directly set on the box body 110 and located in the accommodating cavity 111, and the water inlet end 133 of the water inlet pipe 130 is arranged at the bottom of the box body 110, and the water outlet end 131 is bent toward the bottom of the water tank 100, that is, away from the direction of the return air port 121 of the box cover 120.

[0055] It can be understood that the position of the water inlet pipe 130 and the position of the water inlet end 133 are not specially limited, and the position of the water outlet end 131 satisfies "the return air port 121 and the water outlet end 131 are arranged along the first direction, and the direction of the water outlet end 131 is away from the return air port 121; in the second direction, the return air port 121 and the water outlet end 131 are located on the same side of the baffle 134".

[0056] It should be noted that the box body 110 is generally made of plastic material and is formed in one piece by injection molding. The box body 110 is generally designed to be transparent, or is provided with a transparent observation portion to facilitate observation of the amount of sewage in the box body 110. At present, the box body 110 of the water tank 100 in the industry is generally made of polyethylene or polypropylene. Polyethylene has high corrosion resistance and impact resistance, and has good sealing performance; in addition, the polyethylene material also has low temperature resistance and high temperature resistance, and can adapt to different climatic conditions. Polypropylene has good acid resistance, alkali resistance and high temperature resistance, among which PP-H material also has good cold resistance and is suitable for use in cold areas. Compared with the two, the polyethylene material has poor UV resistance and is easy to age in sunlight, but the cost is lower. Polypropylene material has better performance and higher cost. The material of the box cover 120 is generally the same as that of the box body 110, the difference is that the box cover 120 generally does not need to be designed to be transparent.

[0057] Reference Figures 5 to 7 The baffle 134 of the water tank 100 provided by the embodiment of the first aspect of the utility model includes a first water retaining section 135 and a second water retaining section 136, wherein the first water retaining section 135 is located on the side of the second water retaining section 136 close to the tank cover 120, wherein the maximum distance L1 between the first water retaining section 135 and the central axis of the water outlet end 131 is less than the minimum distance L2 between the second water retaining section 136 and the central axis of the water outlet end 131. The advantage of such a design is that when used at a large angle, the second water retaining section 136 can block the shaking sewage and prevent the sewage from overflowing the baffle 134 and flowing into the return air port 121, which can effectively increase the water retaining capacity of the baffle 134 when used at a large angle. The second water retaining section 136 is parallel to the detection section 142 of the electrode sheet 140, and the advantage of such a design is that it can effectively avoid interference with the baffle 134 when installing the electrode sheet 140.

[0058] It should be noted that if Figure 7 As shown, the first water retaining section 135 is vertically arranged, and the second water retaining section 136 is inclined. The second water retaining section 136 is parallel to the detection section 142 of the electrode sheet 140 . The purpose of the inclined arrangement of the second water retaining section 136 is to avoid the bent electrode sheet 140 .

[0059] Reference Figures 2 to 7 The water outlet 131 is provided with a guide portion 132, which is located on a side of the water outlet 131 away from the baffle 134 and protrudes from the water outlet along a first direction. In a direction away from the air return port 121, the cross-sectional area of ​​the guide portion 132 gradually decreases, and the first direction is perpendicular to the cross-sectional area. Figures 5 to 7 As shown, the guide portion 132 is configured as a pointed elbow, which can effectively increase the air intake interception area. The air speed will decrease after passing through the guide portion 132 , thereby reducing the sewage entering the accommodating chamber 111 from splashing to the return air port 121 .

[0060] It should be noted that if Figure 2 As shown, in the first use state, sewage enters the water inlet pipe 130 from the water inlet end 133 and then sprays out from the water outlet end 131. The guide part 132 has a guiding effect on the sewage and the airflow, and guides the sewage and the airflow to the rear side of the water tank 100. After the sewage hits the water tank 100, it flows downward to the bottom of the water tank 100, and the water level in the water tank 100 gradually rises. When the water surface contacts the detection section 142 of the electrode sheet 140, a water level alarm is issued. After hitting the water tank 100, the airflow will flow to the front side and then flow toward the return air port 121 above. Due to the existence of the guide part 132, the interception area of ​​the airflow increases and the airflow velocity slows down after the airflow hits the guide part 132, so that the airflow flowing into the return air port 121 is basically free of sewage.

[0061] It should be noted that if Figure 4 As shown, in the second usage state, sewage enters the water inlet pipe 130 from the water inlet end 133 and then sprays out from the water outlet end 131. The guide part 132 has a guiding effect on the sewage and the airflow, and guides the sewage and the airflow to the bottom of the water tank 100. After the sewage hits the water tank 100, it flows forward, and the water level in the water tank 100 gradually rises. When the water surface contacts the detection section 142 of the electrode sheet 140, a water level alarm is issued. Different from the first usage state, after the water level gradually rises, the sewage sprayed from the water outlet end 131 will hit the water surface, thereby raising water splashes. After hitting the water surface, the airflow carries part of the water splashes and flows to the top of the water tank 100 and flows toward the return air port 121 on the rear side of the water tank 100. Due to the existence of the guide part 132, the airflow will hit the guide part 132 before flowing to the return air port 121, the interception area is increased, the airflow velocity is slowed down, and the water splashes entrained by the airflow will fall, so that the airflow flowing into the return air port 121 is basically not accompanied by sewage.

[0062] Reference Figures 2 to 7 The guide portion 132 provided in the first embodiment of the utility model also has the following characteristics: the guide portion 132 is located on the side of the water outlet 131 away from the baffle 134, and the guide portion 132 is provided with a guide surface, and the guide surface guides the water flow along the inner wall surface of the water inlet pipe 130 to the central axis of the water outlet 131 in the direction away from the return air port 121. The specific structure is as follows Figure 5 and Figure 6 As shown, the guide portion 132 is an elbow with the bottom converging inward, that is, the bottom converging inward toward the central axis of the water outlet end 131 of the water inlet pipe 130. When sewage is sprayed out from the water outlet end 131 and guided by the guide portion 132, the sewage will flow toward the central axis of the water outlet end 131 or have a tendency to flow toward the central axis of the water outlet end 131, and the water droplets hanging on the edge of the water outlet end 131 will not flow back to the return air port 121 along the outer wall of the pipe, but will flow along the guide surface to the central axis of the water outlet end 131, effectively avoiding the problem of backwater short circuit.

[0063] It should be noted that the length of the baffle 134 in the first direction cannot exceed the guide portion 132. The reason is that when sewage is sprayed out from the water outlet 131 of the water inlet pipe 130, if the length of the baffle 134 in the first direction exceeds the guide portion 132, the sprayed sewage will directly splash on the side of the baffle 134 close to the return air port 121, thereby causing backflow, that is, the sewage will move along the side of the baffle 134 close to the return air port 121 to the return air port 121, and flow from the return air port 121 to the fan.

[0064] Reference Figures 2 to 7 , along the second direction, the baffle 134 covers the end of the electrode sheet 140 connected to the box cover 120. The electrode sheet 140 is arranged on the side of the baffle 134 away from the return air port 121 and the water outlet 131. The baffle 134 blocks the end of the electrode sheet 140 connected to the box cover 120. When sewage is sprayed from the water outlet 131, the baffle 134 can effectively block the sewage and prevent the sewage from splashing on the top of the electrode sheet 140. A dry area is formed on the top of the electrode sheet 140, which effectively avoids the occurrence of false alarms of the water tank 100 caused by top conduction.

[0065] It is understandable that when the sewage is a highly adhesive substance such as soy sauce, if the baffle 134 is not provided, the sewage will be sprayed out from the water outlet 131, and part of the sewage will splash onto the top of the electrode sheet 140 and the body of the electrode sheet 140, and the sewage will not easily flow down from the electrode sheet 140. When the positive and negative electrode sheets 140 are connected through the sewage on the top of the electrode sheet 140, an alarm indicating that the water is full will be issued, but at this time the water tank 100 is not full, resulting in a false alarm. The arrangement of the baffle 134 covering the top of the electrode sheet 140 effectively avoids the occurrence of false alarms. In addition, except for the detection section 142 used for detection, the rest of the electrode sheet 140 is covered with an insulating member 143, such as a rubber sleeve, to achieve a partial insulation effect. This arrangement can effectively prevent the positive and negative electrodes from forming a loop with the sewage.

[0066] It should be noted that a portion of the electrode sheet 140 needs to protrude from the baffle 134 along the first direction, that is, the detection section 142 protrudes from the baffle 134 along the first direction. This arrangement is conducive to the electrode sheet 140 detecting the water level in the water tank 100. Figure 2 and Figure 4 As shown, whether in normal use or in large-angle use, the electrode sheet 140 can effectively detect the sewage water level and issue an alarm when the sewage water level exceeds the normal use value range.

[0067] Reference Figures 5 to 7In order to prevent the sewage sprayed from the water outlet 131 from splashing onto the electrode sheet 140 and causing a false alarm, the electrode sheet 140 and the water outlet 131 protrude from the baffle 134 along the first direction, and the electrode sheet 140 and the water outlet 131 are staggered on the projection plane perpendicular to the second direction. With this arrangement, the sewage sprayed from the water outlet 131 will not directly spray onto the protruding portion of the electrode sheet 140.

[0068] Reference Figures 5 to 7 , a notch is provided at one end of the baffle 134 close to the tank cover 120, and the water tank 100 further includes a panel 150 and a filter 160. The panel 150 is passed through the baffle 134, and the panel 150 connects the edge of the notch, the water inlet pipe 130 and the tank cover 120 to form an air inlet channel, the return air port 121 is located in the air inlet channel, and the filter 160 is located at the air outlet of the air inlet channel. The panel 150 can block the sewage on the baffle 134 to prevent the sewage from flowing into the return air port 121. The panel 150 has a blocking effect on the sewage remaining on the baffle 134. For example, when there is sewage remaining on the baffle 134, using the water tank 100 at a large angle will cause the sewage on the baffle 134 to flow. At this time, the panel 150 plays a blocking role, blocking the sewage so that the sewage cannot flow into the return air port 121, thereby avoiding the occurrence of backflow. The height design of the panel 150 has little effect on the air backflow in the water tank 100.

[0069] It is understandable that filter 160 is generally a HEPA filter element, which uses ultra-fine glass fiber paper as filter material, offset paper, aluminum film and other materials as partition plates, and is bonded with a wooden frame and aluminum alloy. It is made of special silicone rubber, has no odor, and the surface will not harden or crack over time. It has stable chemical properties and is corrosion-resistant. It can absorb the stress caused by thermal expansion and contraction without cracking. It has moderate hardness and good elastic recovery. Compared with ordinary filter elements, HEPA filter elements can filter out approximately 99.97% of fine particles in the air, such as pollen, dust mites, viruses, etc., and have an excellent filtering effect.

[0070] It should be noted that, in other embodiments, the filter 160 can also be a high-efficiency filter mesh, dust-proof cotton, etc., among which the high-efficiency filter mesh is one of the most common filter elements, mainly used to filter dust, fine particles, etc., and is generally taken out and cleaned once a week. The function of the dust-proof cotton is similar to that of the high-efficiency filter mesh, which is mainly used to filter dust, fine particles, etc. The price of dust-proof cotton is lower than that of the high-efficiency filter element.

[0071] Reference Figure 8The cleaning appliance of the second embodiment of the utility model includes a water tank 100, a body 200, a clean water tank 210, a floor brush 220 and a charging base. A handle is provided on the top of the body 200, and the handle is convenient for the user to hold. A floor brush 220 is provided at the bottom of the body 200, and the floor brush 220 is provided with a roller brush for cleaning the bottom surface. A fan is provided inside the body 200, and the fan is used to exhaust air from the air inlet of the floor brush 220. The water tank 100 is arranged at the front of the body 200, and the clean water tank 210 is arranged at the rear of the body 200. The water inlet pipe 130 of the water tank 100 is connected to the air inlet of the floor brush 220. The clean water tank 210 provides clean water for the floor brush 220. When the floor brush 220 is idle, it is placed on the charging base for charging.

[0072] It should be noted that the fan is started by a switch on the handle, the air inlet of the floor brush 220 starts to draw air and absorb the garbage and sewage on the ground, and at the same time the floor brush 220 also sprays water on the ground and the roller brush, the roller brush rolls to clean the ground, and the garbage and sewage enter the water tank 100 through the water inlet pipe 130 and realize gas-liquid separation in the water tank 100, and the air flows out from the return air port 121 of the water tank 100.

[0073] It should be noted that the connection method between the water tank 100 and the body 200 is not limited. In some embodiments, the body 200 and the water tank 100 are connected in a detachable manner such as a threaded connection or a slot connection. The position where the water tank 100 is installed on the body 200 is not limited. In some embodiments, the water tank 100 is installed on the front of the body 200, and the clean water tank 210 is correspondingly installed on the rear of the body 200, so that the product as a whole is more compact. In other embodiments, the water tank 100 is installed on the side or rear of the body 200, and the installation position of the clean water tank 210 is adaptively adjusted.

[0074] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Water tank, used for cleaning appliances, It is characterized in that include: The box body is provided with a containing cavity; A box cover, connected to the box body and closing the accommodating cavity; A water inlet pipe, used for conveying liquid to the containing chamber; an electrode sheet, located in the accommodating cavity and close to the box cover, the electrode sheet comprising a connecting section and a detecting section connected to each other, the connecting section being connected to the box body and / or the box cover, the detecting section being used to detect the water level, the connecting section and the detecting section being arranged at an obtuse angle, and the detecting section being located on a side of the connecting section away from the box cover; The water tank has a first use state and a second use state. In the first use state, the connecting section is located above the detecting section; in the second use state, the detecting section is located above the connecting section.

2. The water tank according to claim 1, It is characterized in that The water inlet pipe is provided with a water outlet end, and the direction of the water outlet end is away from the box cover.

3. The water tank according to claim 2, It is characterized in that The water tank further comprises a baffle, and the baffle is located between the electrode sheet and the water outlet.

4. The water tank according to claim 3, It is characterized in that The box cover is provided with an air return port connected to the accommodating cavity, the air return port and the water outlet are located on the same side of the baffle, the baffle includes a first water retaining section and a second water retaining section, the first water retaining section is located on the side of the second water retaining section close to the box cover, and the maximum distance L between the first water retaining section and the central axis of the water outlet is 1 Less than the minimum distance L between the second water retaining section and the central axis of the water outlet 2 .

5. The water tank according to claim 4, It is characterized in that The second water retaining section is parallel to the detection section.

6. The water tank according to claim 3, It is characterized in that In the direction away from the box cover, the electrode sheet and the water outlet end protrude from the baffle plate, and on the projection plane perpendicular to the arrangement direction of the baffle plate and the electrode sheet, the electrode sheet and the water outlet end are staggered.

7. The water tank according to claim 1, It is characterized in that The angle between the connecting section and the detecting section is α, which satisfies 170°≤α≤178°.

8. The water tank according to claim 1, It is characterized in that In the first usage state, the cleaning appliance is in a vertical state, the water tank is located on the front side of the cleaning appliance, and the detection section is inclined from the lower end of the connecting section toward the front side of the cleaning appliance; in the second usage state, the cleaning appliance is in a backward tilted state, and the inclination angle relative to the position of the cleaning appliance in the vertical state is greater than or equal to 80°.

9. The water tank according to claim 1, It is characterized in that An insulating member is sleeved on the electrode sheet, and at least a portion of the detection section protrudes from the insulating member.

10. Clean electrical appliances, It is characterized in that A water tank comprising the water tank described in any one of claims 1 to 9.

Images