CN212465818U - Hand washer structure - Google Patents

Abstract

The utility model provides a hand washer structure, which comprises a hand washer body, wherein a hand washing groove is arranged on the hand washer body, and the hand washer body is also provided with an air cavity, a water cavity and a water-air mixing flow passage; the air cavity is provided with an air inlet and an air outlet, the air inlet is connected with an air source, the air outlet is communicated with a water-air mixing flow channel, and the outlet of the water-air mixing flow channel is communicated with the hand washing tank; the water cavity is provided with a water inlet, a water outlet and a drainage hole communicated with the outside atmosphere, and the water outlet is communicated with the water-gas mixed flow passage; the compressed gas discharged from the air outlet of the air cavity flows through the water outlet of the water cavity. The utility model utilizes the principle of Venturi tube or air knife, when the compressed air is discharged into the water-air mixing flow passage, the water in the water cavity is sucked into the water-air mixing flow passage, the compressed air and the water are mixed into the water-air mixture in the water-air mixing flow passage, the water-air mixture is sprayed out from the water-air mixing flow passage, the scouring force is stronger, and the water is saved; and the time of rubbing hands by people can be reduced, the hand washing efficiency is high, and the labor is saved.

Description

Hand washer structure

Technical Field

The utility model belongs to the technical field of the wash-basin, concretely relates to hand washer structure.

Background

The existing hand washer generally adopts a hand basin to wash hands, a tap is arranged beside the hand basin, water flows out after the tap is unscrewed during hand washing, the hands stretch under the tap, the water sprayed out by the tap is sprayed on the hands from top to bottom, then the hands are washed, and the tap is closed after the hands are washed.

The existing hand washing mode has large water flow and water consumption, so a more water-saving hand washer needs to be found.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing a hand washer structure to solve the technical problem that current mode of washing hand is more taken water.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a structure of a hand washer comprises a hand washer body, wherein an open or retracted hand washing groove is formed in the hand washer body, and an air cavity, a water cavity and a water-air mixing flow passage are further formed in the hand washer body;

the air cavity is provided with an air inlet and an air outlet, the air inlet is connected with an air source, the air outlet is communicated with a water-air mixing flow channel, and the outlet of the water-air mixing flow channel is communicated with the hand washing tank;

the water cavity is provided with a water inlet, a water outlet and a drainage hole communicated with the outside atmosphere, the water level of the water cavity is below the drainage hole, and the water outlet is communicated with the water-gas mixed flow channel;

the compressed gas discharged from the air outlet of the air cavity flows through the water outlet of the water cavity.

In the technical scheme, by utilizing the principle of a Venturi tube or an air knife, when compressed air is discharged into the water-air mixing flow channel, water in the water cavity is sucked into the water-air mixing flow channel, the compressed air and the water are mixed into a water-air mixture in the water-air mixing flow channel, the water-air mixture is ejected out from the water-air mixing flow channel, the scouring force is stronger, and the water is saved; when cleaning products (such as hand sanitizer or soap and the like) are used for washing hands, the water-air mixture is sprayed at a high speed, so that the residual foam of the cleaning products on the hands can be quickly washed away, the time for scrubbing the hands by people is shortened, the labor is saved, the hand washing efficiency is improved, and the hand washing time is saved.

In a preferred embodiment of the utility model, the hand washing sink is of a retractable structure, the opening of the hand washing sink is positioned on the side wall of the hand washer body, and the bottom of the hand washing sink is positioned behind and below the opening of the hand washing sink; or the opening of the hand washing sink is positioned at the top of the hand washer body, and the bottom of the hand washing sink is positioned below the opening of the hand washing sink.

The hand washing groove is of a retraction structure, and can play a better shielding role compared with an open structure, when people stretch hands into the hand washing groove to wash hands, the phenomenon that water-gas mixture splashes outside the hand washer body is reduced, and the spread of viruses and bacteria is reduced.

The utility model discloses an in a preferred embodiment, the opening of hand washing groove is located the preceding lateral wall of hand washer body, and the hand washing groove is the sunken arc wall in rear below. Therefore, people can conveniently stretch hands into the hand washing sink from the front end, and the hand washing sink is more convenient to use.

The utility model discloses an in the preferred embodiment, still set firmly the pipe that absorbs water in the water cavity, the upper end and the water inlet intercommunication in water cavity of the pipe that absorbs water, the lower extreme that absorbs water stretches into the aquatic in water cavity. After the water suction pipe is arranged, water in the water cavity is discharged from the water outlet after passing through the water suction pipe, so that the water level in the water cavity does not need to be strictly set, and the range of the water level in the water cavity is larger.

When the outlet of the water-gas mixing flow channel is a strip-shaped opening, the structure of the water-gas mixing flow channel is simpler than that of a water-gas mixing flow channel with a plurality of small holes, but the small holes are point-spraying, the impact force is larger, and the hand washing and blowing effects are better.

In a preferred embodiment of the present invention, a first valve is disposed at the water outlet to control the on-off of the water outlet. When the first valve is closed, only the compressed air is discharged from the water-air mixing flow passage, so that the water on the hands of people can be blown off after washing the hands.

In a preferred embodiment of the present invention, the air outlet of the air cavity is provided with a second valve for controlling the on-off of the air cavity, or a second valve for controlling the on-off of the air cavity is provided in the water-air mixing channel.

Therefore, the air source (such as an air compressor or an air pump) does not need to be started frequently, and the air cavity is always filled with compressed air, so that the compressed air can be sprayed out from the air cavity quickly when people wash hands, and the response speed is high.

In another preferred embodiment of the present invention, an inductor is further disposed in the hand sink for inducing the hand of a user, and the signal output end of the inductor is electrically connected to the switch enable end of the air source.

For example, in places with large flow of people, when people wash hands, the sensor senses the air source and automatically opens the air source, and after the hand washing is finished, the air source is automatically closed, so that the air source switch does not need to be manually opened or closed by people, and the use is convenient.

The utility model discloses an in another kind of preferred embodiment, still be equipped with the inductor of response staff in the hand sink, the signal output part of inductor and the enable end electric connection of controller, the first control end and the second control end of controller respectively with the switch enable end electric connection of end and the enable end of first valve of air supply.

For example, in places with large flow of people, when people wash hands, the sensor senses the people, and the controller controls the air source and the first valve to be opened; when water on the hands needs to be blown off, the controller controls the first valve to be closed; after the blowing hand is finished, the controller controls the air source to be automatically closed, the air source and the first valve do not need to be manually opened or closed by people, and the use is convenient.

In another preferred embodiment of the present invention, an inductor for inducing hands is further disposed in the sink, and a signal output end of the inductor is connected to an enable end of the controller;

the first control end and the second control end of the controller are respectively and electrically connected with the enabling ends of the second valve and the first valve.

For example, in places with large flow of people, the air source is normally open, when people wash hands, the sensor senses that the first valve and the second valve are opened under the control of the controller; when needing to blow off the water on hand, the first valve of controller control is closed, blows the hand and finishes the back, and controller second valve is closed, and it is convenient to use.

In another preferred embodiment of the present invention, a water level sensor is disposed in the water chamber, a water inlet of the water chamber is connected to a water source, a third valve is disposed at the water inlet of the water chamber, and a signal output terminal of the water level sensor is electrically connected to an enable terminal of the third valve;

or a floating ball switch capable of opening or closing the water inlet is arranged in the water cavity.

The water source is normally open, and by arranging the water level sensor and the float switch, when the water level in the water cavity is reduced, water is automatically added, so that the water level in the water cavity is always kept at a set value.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural outline view of a hand washer structure according to a first embodiment of the present application.

Fig. 2 is a side cross-sectional schematic view of a hand washer structure according to a first embodiment of the present application.

Fig. 3 is a schematic side sectional view of a hand washer structure according to a first embodiment of the present application.

Fig. 4 is a schematic side sectional view of a hand washer structure according to a first embodiment of the present application.

Fig. 5 is a schematic side sectional view of a hand washer structure according to a second embodiment of the present application.

Reference numerals in the drawings of the specification include: the hand washing device comprises a hand washing device body 10, a hand washing sink 11, a hand washing sink opening 111, a sewage draining outlet 112, an air cavity 12, an air inlet 121, a second valve 122, a water cavity 13, a water inlet 131, a third valve 1311, a first valve 132, a first baffle 1321, a drainage hole 133, a water-air mixing flow channel 14, a water level sensor 15 and a water suction pipe 16.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

This embodiment provides a structure of a hand washing device, as shown in fig. 1 and 2, in a preferred embodiment of the present invention, the hand washing device includes a hand washing device body 10, a hand washing sink 11 is provided on the hand washing device body 10, a drain 112 communicated with the bottom of the hand washing sink 11 is provided at the bottom of the hand washing device body 10, and an air cavity 12, a water cavity 13 and a water-air mixing channel 14 are further provided in the hand washing device body 10.

The air cavity 12 has an air inlet 121 and an air outlet, for example, the air inlet 121 is arranged at the left end or the right end of the hand cleaner body 10, the air inlet 121 is connected with an air source (not shown in the figure) through an air pipe, and the air source can be an air compressor or an air pump; the air outlet of the air cavity 12 is communicated with a water-air mixing flow passage 14, and the outlet of the water-air mixing flow passage 14 is communicated with the hand washing sink 11.

The water cavity 13 is provided with a water inlet 131, a water outlet and a drainage hole 133 communicated with the outside atmosphere; for example, the water inlet 131 is arranged at the left end or the right end of the hand washer body 10, and is preferably arranged at the same side as the air inlet 121; the water level of the water chamber 13 is below the drainage hole 133; the water outlet of the water cavity 13 is communicated with the water-gas mixing flow passage 14, and the compressed gas discharged from the gas outlet of the gas cavity 12 flows through the water outlet of the water cavity 13.

As shown in fig. 2, the water chamber 13 is filled with water, the water is not full, the water level of the water chamber 13 is below the joint a between the lower end of the drainage hole 133 and the outer wall of the hand cleaner body 10, the water level of the water chamber 13 is always lower than the joint between the water outlet and the water-air mixture channel 14, that is, water does not overflow from the drainage hole 133 and the water outlet in a normal state.

For example, in one embodiment, as shown in fig. 2, the water level in the water chamber is lower than the connection point B between the water outlet and the inner wall of the hand cleaner body 10, preferably, the height difference is 0-10mm, and more preferably, the height difference is 0.1-1 mm.

In another preferred embodiment, as shown in fig. 3, the water level of the water chamber is higher than the junction B of the water outlet and the inner wall of the hand washer body 10, and the water level of the water chamber is lower than the junction a of the lower end of the drainage hole 133 and the outer wall of the hand washer body 10.

In order to facilitate the processing of the hand washer body 10, the hand washer body 10 may be composed of an intermediate body section and end caps at both ends of the intermediate body section, the hand washing tank 11, the water chamber 13, the air chamber 12 and the water-air mixing flow passage 14 penetrate through the intermediate section and are integrally formed with the intermediate body section, and then the end caps at both ends are welded to the intermediate body section.

In the present embodiment, the air cavity 12 is a single cavity or is formed by connecting a plurality of communicated cavities; the water cavity 13 is a cavity or is formed by connecting a plurality of communicated cavities.

When people need to wash hands, the air source is opened, compressed air generated by the air source enters the air cavity 12 and is discharged into the water-air mixing flow channel 14 from the air outlet of the air cavity 12, water in the water cavity 13 is also discharged into the water-air mixing flow channel 14 from the water outlet under the dual action of the compressed air flow and the air flow entering the water cavity 13 from the drainage hole 133, the compressed air and the water are mixed into water-air mixture in the water-air mixing flow channel 14, and the water-air mixture is discharged into the hand washing sink 11 from the outlet of the water-air mixing flow channel 14 and sprayed on hands. The hand washer mechanism utilizes the principle of a venturi tube or an air knife to realize water and air spraying mixture, hands are washed, water consumption is reduced, and water resources are saved.

In this embodiment, the manner in which the air supply is turned on may be manual or automatic. For example, in places with small flow of the hand washing people, the air source can be manually opened during hand washing, the air source can be closed when the hand is not washed, no electric signal is generated inside the hand washing machine during manual operation, and the structure is simple. When the hand washing tank 11 is used in a public place with large flow of people, the hand washing tank is automatically opened by induction, an inductor (not shown in the figure) for inducing hands of people is arranged in the hand washing tank 11, for example, an infrared inductor can be arranged on the inner wall of the rear side of the hand washing tank 11, and the signal output end of the inductor is electrically connected with the enabling end of an air source. When the inductor senses the hand, the air source switch is automatically opened, and when the inductor does not sense the hand, the air source switch is automatically closed. The specific method for controlling the opening and closing of the air source can adopt a method for sensing water from a hand basin in the prior art, such as a hand basin sensing water outlet technology used in restaurants such as kentucky and the like, and is not detailed herein.

In another preferred embodiment, as shown in fig. 2 and 3, an included angle a between the gas flow direction discharged from the gas outlet and the water flow direction discharged from the water outlet is an acute angle, such as 30 °, 45 ° or 60 °. The included angle a may be a right angle or an obtuse angle, and preferably the included angle a is an acute angle.

In another preferred embodiment, the hand washing tank 11 is of a retractable structure, as shown in fig. 2, the hand washing tank opening 111 is located on a side wall of the hand washer body 10, preferably located on the front side of the hand washer body 10, the hand washing tank 11 is an arc-shaped tank which is recessed towards the rear and downward, that is, the bottom of the hand washing tank 11 is located on the rear and downward side of the hand washing tank opening 111, and hands can be put into the hand washing tank 11 through the opening for cleaning, which is more convenient for hand putting in from the front than that from the left and right sides. In this embodiment, the air chamber 12 and the water chamber 13 are located at the front side of the lower part of the hand washing sink 11, the air chamber 12 is located above the water chamber 13, the air outlet of the air chamber 12 is obliquely arranged towards the rear lower part, the water outlet of the water chamber 13 is obliquely arranged towards the rear upper part, and the water-gas mixing flow passage 14 is obliquely arranged towards the rear lower part.

It should be noted that the mouth of sink 11 may also be located in a recessed configuration at the top of hand cleaner body 10, as shown in figure 4.

The hand washing sink 11 with the retractable structure can play a better shielding role, and when people stretch hands into the hand washing sink 11 for washing hands, the splashing of the water-gas mixture to the outside of the hand washer body 10 is reduced.

It should be noted that the sink 11 may also be of an open construction, including but not limited to open top basin constructions of the prior art, such as the open top sink constructions disclosed in CN201220638919.x, CN201410162428.6 or CN 201710836228.8.

In the present embodiment, the outlet of the water-air mixture flow passage 14 is an elongated opening provided on the front inner wall of the hand washing basin 11, and the opening extends along the length direction of the hand washer body 10; or the outlet of the water-air mixture channel 14 can also be a plurality of small holes arranged on the front inner wall of the hand washing tank 11, the small holes are arranged at intervals along the length direction of the hand washer body 10, and water-air mixture is sprayed out at multiple points.

It should be noted that the outlet of the water-air mixture channel 14 may also be an annular opening provided around the sink 11; when a multi-point spraying mode is adopted, a plurality of small holes are also arranged around the hand washing tank 11, so that the spray is sprayed from the periphery to the center.

In another preferred embodiment, as shown in fig. 2, a first valve 132 is provided at the water outlet of the water chamber 13 for controlling the on-off of the water chamber, in this embodiment, the water source is normally open, and whether the water is discharged into the sink 11 is controlled by the first valve 132. The first valve 132 includes a first blocking plate 1321, which is disposed at the water outlet and is rotatably connected to the hand washer body 10, a sealing ring is disposed between the water outlet and the first blocking plate 1321, the first blocking plate 1321 is connected to a driving member for driving the first blocking plate to rotate, for example, the driving member is a motor, the motor is disposed in an end cover of the hand washer body 10, and a first control end of the controller is connected to an enabling end of the driving member. The motor drives the first blocking plate 1321 to rotate, and the water outlet can be opened or closed, and is shown in a closed state in fig. 2.

It should be noted that the driving member may also be two electromagnets disposed at the front and rear sides of the first blocking plate 1321, and the first blocking plate 1321 is made of magnetically attracting material. For example, in a normal state, the electromagnet at the rear side is powered on, and the first baffle 1321 is attracted by the electromagnet to open the water outlet; when the water outlet needs to be closed, the electromagnet on the rear side loses power, the electromagnet on the front side gets power, and the first baffle 1321 is attracted by the electromagnet to close the water outlet.

Of course, the first valve 132 may have other configurations known in the art.

When people wash hands, the air source and the first valve 132 are opened; after hand washing, the first valve 132 is closed, and the compressed air is discharged from the water-air mixing flow passage 14 into the hand washing sink 11 to blow off water on hands of people; after blowing the hand, the air source is closed.

When the air source switch and the first valve 132 are controlled in an automatic mode, the signal output end of the inductor is electrically connected with the enabling end of the controller, and the first control end and the second control end of the controller are respectively electrically connected with the switch enabling end of the air source and the enabling end of the first valve 132.

In this embodiment, the controller comprises a first timer and a second timer, wherein a timing output end of the first timer is connected with the control end of the gas source, and a timing output end of the second timer is connected with the control end of the first valve 132. Specifically, the air source and the first valve 132 can be driven by a relay, a triode, and other driving circuits. The time of the timer may be preset, the timing time of the first timer is longer than that of the second timer, the two timers start to time after the sensor senses a human hand, the output end of the sensor is connected to the enabling ends of the first timer and the second timer, the first timer and the second timer output an opening signal (for example, a high level), the air source is opened, the first valve 132 is opened, and people start to wash hands, for example, after 15s (or other time), the second timer times up, the second timer outputs a reverse rotation (for example, a low level), the washing of hands is finished, and the first valve 132 is closed. At the moment, the first timer still times, the air source is kept on, only air is blown, water on the hand is blown off, the first timer times up after 10s (or other time) of blowing, the output of the first timer is reversed (for example, low level), and the air source is closed; during which time the person's hand is removed from the sensor and then sensed again, the timer is re-timed.

In another preferred embodiment, a display screen connected to the first timer and the second timer is provided on the hand washing device body 10, so that people can manually set time to adjust the time according to situations, and the detailed description is omitted here for the sake of the prior art.

In another preferred embodiment, as shown in fig. 2, a second valve 122 is provided at the air outlet of the air cavity 12 for controlling the on-off of the air cavity, or the second valve 122 is provided in the water-air mixture flow channel 14, the enable end of the second valve 122 is electrically connected to the second control end of the controller, and the signal output end of the sensor is connected to the enable end of the controller. The second valve 122 may have the same structure as the first valve 132, and will not be described herein.

In this embodiment, the air source is normally open, and the first control end and the second control end of the controller are electrically connected to the enable ends of the second valve 122 and the first valve 132, respectively; specifically, the switch enable terminal of the air source does not need to be electrically connected to the timing output terminal of the aforementioned first timer (i.e. the first control terminal of the controller), and in this embodiment, the timing output terminal of the first timer is connected to the control terminal of the second valve 122.

For places with large flow of people and needing frequent use of the hand washer structure, in a normal state, the air source (air compressor or air pump) is also opened, the second valve 122 is closed, the air compressor or air pump idles, and when the sensor senses hands, the controller controls the second valve 122 to be opened, and compressed air in the air cavity 12 is discharged. Compressed air is always in the air cavity 12, so that when people wash hands, the compressed air can be quickly sprayed out, the water-air mixture can be quickly sprayed out, and the response speed is high.

In another preferred embodiment, a heating device (not shown) is further disposed between the air source and the air cavity 12, the heating device may be a heater in the prior art, and is preferably disposed adjacent to the air inlet of the air cavity 12, and the switch enabling end of the heating device is electrically connected to the timing output end of the second timer through the not gate. After people wash hands, when the first valve 132 is closed during hand blowing, the controller controls the heating device to be opened to heat the compressed air entering the air cavity 12, so that the air blown into the hand washing sink 11 is hot air, and the drying of the hands is accelerated; after blowing the hand, when the second valve 122 is closed, the controller controls the heating device to be closed.

It should be noted that, the enable end of the heating device of the present invention is triggered by the rising edge, and the specific rising edge triggering manner may adopt the existing rising edge triggering manner. For example, the timing output end of the second timer is connected with the not gate, the output end of the not gate is connected with the signal input end of the D trigger, the pulse end of the D trigger is connected with the CP clock, and the output end of the D trigger is connected with the switch enable end of the heating device.

In the present embodiment, any conventional timer capable of setting a timer time may be used as the timer.

As shown in fig. 2, in another preferred embodiment of the present invention, a water level sensor 15 is disposed in the water chamber 13, the water inlet 131 of the water chamber 13 is connected to an external water source through a water pipe, the water source can be a faucet or a water tank, a third valve 1311 is disposed at the water inlet 131 of the water chamber 13, and the structure of the third valve 1311 can also be the same as that of the first valve 132. The signal output terminal of the water level sensor 15 is electrically connected to the enable terminal of the third valve 1311.

In the present embodiment, the water level sensor 15 may be any existing water level sensor (or may be a water level meter), and may be a water level probe, for example, a water level probe used in a washing machine, when the water level of the water chamber 13 decreases, the water level sensor 15 outputs a trigger signal, so that the third valve 1311 is opened, water from the water source enters the water chamber 13, water is replenished into the water chamber 13, and when the water in the water chamber 13 is sufficient, the third valve 1311 is closed, thereby automatically adding water into the water chamber 13.

Specifically, the output end of the water level sensor 15 may be connected to a comparator, a first input end of the comparator is connected to the output end of the water level sensor 15, and a second input end of the comparator is connected to the threshold memory. For example, when the water level detected by the water level sensor is lower than a threshold (set water level), the signal output by the comparator passes through the not gate, and the not gate outputs a first trigger signal, which is connected to the opening control terminal of the third valve 1311; when the water level detected by the water level sensor reaches a threshold value, the comparator outputs a second trigger signal, and the second trigger signal is connected with the closing control end of the third valve 1311.

It should be noted that, in addition to the above-mentioned manner of setting the water level sensor 15 to automatically add water into the water chamber 13, a float switch capable of opening or closing the water inlet may be further provided in the water chamber 13, and the third valve 1311 is not necessary to be provided, and when the water level of the water chamber 13 drops, the float switch is opened to automatically add water, and when the water level of the water chamber 13 rises, the float switch is automatically closed to stop adding water, and the float switch is adopted to automatically add water. In the embodiment, the mode of opening the air source switch can be manual or automatic, no electric signal is generated inside the air source switch during manual operation, and the structure is simple.

Example two

The structure principle of this embodiment is substantially the same as that of the first embodiment, except that, as shown in fig. 5, a water suction pipe 16 is further fixedly arranged in the water cavity 13, the upper end of the water suction pipe 16 is communicated with the water inlet of the water cavity 13, the lower end of the water suction pipe 16 extends into the water in the water cavity 13, and preferably, the lower end of the water suction pipe 16 is fixedly connected with an inverted funnel. After the water suction pipe 16 is arranged, the water in the water cavity 13 is discharged from the water outlet after passing through the water suction pipe 16, so that the water level in the water cavity 13 does not need to be strictly set, and the range of the water level in the water cavity 13 is wider.

In this embodiment, one can manually add water to the water chamber 13 or automatically add water. When water is automatically added, as in the first embodiment, as shown in fig. 1 and 5, two water level sensors 15, which are respectively a low water level sensor and a high water level sensor, are disposed in the water chamber 13, and both can be water level probes, the water inlet of the water chamber 13 is connected to an external water source through a water pipe, a third valve 1311 is disposed at the water inlet 131 of the water chamber 13, and the signal output ends of the two water level sensors 15 are electrically connected to the enable end of the third valve 1311.

In the present embodiment, the low water level sensor outputs a trigger signal when the water level of the water chamber 13 falls to the low water level, and the high water level sensor outputs a trigger signal when the water level of the water chamber 13 reaches the high water level.

Specifically, the output end of each water level sensor 15 is connected with a comparator, a first input end of the comparator is connected with the output end of the corresponding water level sensor, and a second input end of the comparator is connected with the corresponding threshold value memory. For example, the output end of the low water level sensor is connected with the first input end of the first comparator, the second input end of the first comparator is connected with the first threshold value memory, when the water level detected by the low water level sensor is lower than the first threshold value (low water level), the signal output by the first comparator passes through the not gate, and the not gate outputs the first trigger signal. The output end of the high water level sensor is connected with the first input end of the second comparator, the second input end of the second comparator is connected with the second threshold value memory, and when the water level detected by the high water level sensor is higher than the second threshold value (high water level), the second comparator outputs a second trigger signal.

The first trigger signal is connected to the open control terminal of the third valve 1311 and the second trigger signal is connected to the close control terminal of the third valve 1311.

It should be noted that a water level sensor 15 capable of detecting a high water level and a low water level at the same time may be provided, such as an XY-UHZ series magnetic flap level gauge of the automated instrument of Jiangsu letter instruments ltd, and when the water level sensor 15 detects that the water level in the water chamber 13 falls to the low water level, the third valve 1311 is opened to supply water to the water chamber 13 until the water in the water chamber 13 reaches the high water level, and the third valve 1311 is closed.

In another preferred embodiment, a plurality of water suction pipes 16 are arranged along the length direction of the hand washing sink 11, the outlet end of each water suction pipe 16 is provided with a first valve 132 for controlling the on-off of the water suction pipe, and the position of each water suction pipe 16 is provided with a sensor for sensing the hand of a person, so that the sensing of water spraying in a specific area is realized.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A structure of a hand washer comprises a hand washer body and is characterized in that an open or retracted hand washing groove is formed in the hand washer body, and an air cavity, a water cavity and a water-air mixing flow passage are further formed in the hand washer body;

the air cavity is provided with an air inlet and an air outlet, the air inlet is connected with an air source, the air outlet is communicated with a water-air mixing flow channel, and an outlet of the water-air mixing flow channel is communicated with the hand washing tank;

the water cavity is provided with a water inlet, a water outlet and a drainage hole communicated with the outside atmosphere, the water level of the water cavity is below the drainage hole, and the water outlet is communicated with the water-gas mixed flow channel;

the compressed gas discharged from the gas outlet of the gas cavity flows through the water outlet of the water cavity.

2. A structure as claimed in claim 1, wherein the sink is of a retractable structure, the opening of the sink is located on the side wall of the body of the hand washer, and the bottom of the sink is located behind and below the opening of the sink; or the opening of the hand washing sink is positioned at the top of the hand washer body, and the bottom of the hand washing sink is positioned below the opening of the hand washing sink.

3. A hand cleaner structure as claimed in claim 2, wherein the mouth of the hand washing trough is located on the front side wall of the hand cleaner body, and the hand washing trough is an arc-shaped trough which is concave downwards and rearwards.

4. The structure of a hand washing device as claimed in claim 1, wherein a suction pipe is fixed in the water chamber, the upper end of the suction pipe is connected to the water inlet of the water chamber, and the lower end of the suction pipe extends into the water in the water chamber.

5. A hand washer structure as claimed in claim 1, wherein said water outlet is provided with a first valve for controlling the on-off of said water outlet.

6. A hand washing apparatus as claimed in claim 5, wherein the air outlet of the air chamber is provided with a second valve for controlling the opening and closing of the air chamber_，Or a second valve for controlling the on-off of the water-gas mixing flow passage is arranged in the water-gas mixing flow passage.

7. A hand washer structure as claimed in any one of claims 1-4, wherein said hand washing basin is further provided with a sensor for sensing a hand of a person, and a signal output terminal of said sensor is electrically connected to a switch enable terminal of said air supply.

8. A structure as claimed in claim 5, wherein the sink is further provided with a sensor for sensing a hand of a person, a signal output terminal of the sensor is electrically connected to an enabling terminal of the controller, and a first control terminal and a second control terminal of the controller are electrically connected to the switch enabling terminal of the air supply and the enabling terminal of the first valve, respectively.

9. The structure of claim 6, wherein the sink is further provided with a sensor for sensing a hand of a person, and a signal output end of the sensor is connected with an enabling end of the controller;

the first control end and the second control end of the controller are respectively and electrically connected with the enabling ends of the second valve and the first valve.

10. A hand washer structure as claimed in any one of claims 1-6, 8 or 9, wherein a water level sensor is provided in said water chamber, a water inlet of said water chamber is connected to a water source, a third valve is provided at a water inlet of said water chamber, and a signal output terminal of said water level sensor is electrically connected to an enable terminal of said third valve;

or a floating ball switch capable of opening or closing the water inlet is arranged in the water cavity, and the water inlet of the water cavity is connected with a water source.

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