Water purifying and drinking machine

Abstract

The embodiment of the utility model provides a water purifying and drinking machine which comprises a pure water tank, a floater guide part is arranged on the inner side wall of the pure water tank, and the floater guide part is communicated with the pure water tank; the floater is arranged in the floater guide part, and the floater can float to the water surface in the floater guide part; the high-water-level switch is arranged on the outer side wall of the pure water tank, and the high-water-level switch is matched with the floater so as to trigger the high-water-level switch when the floater reaches the highest water level of the pure water tank; the low-water-level switch is arranged on the outer side wall of the pure water tank, and the low-water-level switch is matched with the floater so as to trigger the low-water-level switch when the floater reaches the lowest water level of the pure water tank. According to the water purifying and drinking machine provided by the embodiment of the invention, the floater guide part can limit the moving path of the floater and prevent the floater from excessively deviating from the setting positions of the high-water-level switch and the low-water-level switch, so that whether the water level reaches the highest water level and the lowest water level or not can be detected according to the floating height of the floater in the floater guide part, and detection is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and specifically relates to a water purifier. Background Art

[0002] The existing water purifiers generally include a raw water tank and a pure water tank. The water in the raw water tank is filtered and then transported to the pure water tank. In order to prevent the water level in the pure water tank from being too high or too low, a liquid level detection device is usually set to detect the water level to control water addition and cut-off. However, for the existing water level detection devices, most of them set the high water level switch on the tank cover, which is far from the sensing element, resulting in errors in water level detection. Summary of the Utility Model

[0003] The present application aims to at least solve the problem of insufficient accuracy of the water level monitoring device of the pure water tank in the above-mentioned existing technology or related technologies.

[0004] To this end, the first aspect of the present utility model provides a water purifier, including: a pure water tank, on the inner side wall of the pure water tank, there is provided a float guiding part, and the float guiding part is communicated with the pure water tank; a float, arranged in the float guiding part, and the float can float to the water surface in the float guiding part; a high water level switch, arranged on the outer side wall of the pure water tank, and the high water level switch cooperates with the float to trigger the high water level switch when the float reaches the highest water level of the pure water tank; a low water level switch, arranged on the outer side wall of the pure water tank, and the low water level switch cooperates with the float to trigger the low water level switch when the float reaches the lowest water level of the pure water tank.

[0005] The water purifier proposed in the embodiments of this aspect is provided with a float guiding part on the inner side wall of the pure water tank, the float is arranged in the float guiding part, and the float guiding part can limit the moving path of the float, preventing the float from deviating too much from the setting positions of the high water level switch and the low water level switch. Thus, the water level can be detected by the floating height of the float in the float guiding part to determine whether the water level reaches the highest water level and the lowest water level, and the detection is convenient; further, the high water level switch and the low water level switch are arranged on the outer side wall of the pure water tank, making the distance between the high water level switch and the low water level switch and the float closer, which is conducive to accurate sensing.

[0006] In some embodiments, a plurality of water passing holes are distributed at intervals along the height direction of the side wall of the float guiding part, and the accommodating cavity is communicated with the pure water tank through the water passing holes. With such a setting, the float guiding part can be communicated with the pure water tank at multiple positions in the height direction, enabling the water level change in the pure water tank to be reflected in the float guiding part in a timely and accurate manner, enabling the water surface in the float guiding part to quickly level with the water surface in the pure water tank, and making the sensing between the float and the high water level switch and the low water level switch more accurate.

[0007] In some embodiments, the interval between two adjacent water through - holes is greater than or equal to 5 mm and less than or equal to 15 mm. Within this range, on the one hand, it avoids the situation that the interval between the water through - holes is too small, resulting in insufficient structural strength of the product and easy deformation. On the other hand, it avoids the situation that the interval between the water through - holes is too large, which may cause untimely water inflow and outflow in the float guiding part, resulting in a deviation between the water level in the float guiding part and the water level in the pure water tank, and affecting the sensing accuracy of the float with the high - water - level switch and the low - water - level switch.

[0008] In some embodiments, the float guiding part is a hollow columnar shape, extending along the height direction of the pure water tank. The float is a cube, and the unilateral distance between the float and the inner wall of the float guiding part is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. Designing the float as a cube structure makes the shape of the float regular and not easy to rotate under the drive of water flow, thus making the sensing between the float and the high - water - level switch and the low - water - level switch more accurate. Further, the unilateral distance between the float and the inner wall of the float guiding part is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. Within this range, on the one hand, it can avoid the situation that the unilateral distance between the float and the inner wall of the float guiding part is too small, affecting the movement of the float in the float guiding part. On the other hand, it can avoid the situation that the unilateral distance between the float and the inner wall of the float guiding part is too large, resulting in too large a movement space for the float, causing problems such as a large rotation amplitude of the float in the float guiding part and a large deviation of the float from the center of the float guiding part, thus affecting the sensing between the float and the high - water - level switch and the low - water - level switch.

[0009] In some embodiments, the float includes a main body made of a foaming material and a magnetic part encapsulated inside the main body; the high - water - level switch and / or the low - water - level switch is a reed switch.

[0010] In these embodiments, the foaming material has the advantages of good buoyancy and not being easy to take in water. It can drive the magnetic part to float and protect the magnetic part encapsulated therein; the reed switch can change its own switch state when the magnetic part moves into its own magnetic field sensing area, thus cooperating with the magnetic part to realize high - and low - water - level detection, and having the advantages of high detection accuracy and low cost.

[0011] In some embodiments, the first liquid delivery device is used to supply water to the pure water tank. When the float moves to the corresponding position of the high - water - level switch and triggers the high - water - level switch, the first liquid delivery device is closed; the second liquid delivery device is used to deliver the water in the pure water tank outwards. When the float moves to the corresponding position of the low - water - level switch and triggers the low - water - level switch, the second liquid delivery device is closed.

[0012] In these embodiments, the first liquid delivery device is connected to the high water level switch, so that the on / off state of the high water level switch can be associated with that of the first liquid delivery device, preventing water from spilling out of the pure water tank when the water level exceeds the highest water level line and improving the automation of the product. Specifically, when the first liquid delivery device operates to fill water into the pure water tank, when the water level in the pure water tank reaches the highest water level line, the float senses the high water level switch, and the first liquid delivery device stops working, and the water level in the pure water tank no longer rises; the second liquid delivery device is connected to the low water level switch, so that the on / off state of the low water level switch can be associated with that of the second liquid delivery device, preventing dangers such as dry burning of the heating element when the water level is lower than the lowest water level line and improving the automation of the product. Specifically, when the second liquid delivery device operates to pump water out of the pure water tank, when the water level in the pure water tank reaches the lowest water level line, the float senses the low water level switch, and the second liquid delivery device stops working, and the water level in the pure water tank no longer drops.

[0013] In some embodiments, the water purifier further includes: a raw water tank for holding water to be filtered; a first water pipe connecting the raw water tank and the pure water tank; a filtering device, the filtering device and the first liquid delivery device are arranged on the first water pipe, and the first liquid delivery device can transport the water in the raw water tank to the filtering device for filtering and then transport the water passing through the filtering device to the pure water tank.

[0014] By arranging the filtering device and the first liquid delivery device between the raw water tank and the pure water tank, the raw water can be filtered and stored in the pure water tank, which is convenient for users to drink.

[0015] In some embodiments, the water purifier further includes: a water outlet for supplying water outwards; a second water pipe connecting the pure water tank and the water outlet; a heating element, the second liquid delivery device and the heating element are arranged on the second water pipe, and the second liquid delivery device can transport the water in the pure water tank to the heating element for heating and then transport the heated water to the water outlet of the machine body.

[0016] By arranging the heating element, the pure water can be heated and then supplied to the water outlet, which is convenient for users to obtain hot water as needed.

[0017] In some embodiments, the water purifier further includes a machine shell, and a receiving groove with an open top is arranged on the machine shell, and the pure water tank is detachably installed in the receiving groove.

[0018] In these embodiments, the pure water tank is built into the housing. Compared with the solution of setting the pure water tank outside the housing, the pure water tank can utilize the gaps between structures such as the filtering device, heating device, and water pipes inside the housing, reducing the volume of the water purifier. Further, the pure water tank is detachably installed in the receiving groove, and the pure water tank can be removed for cleaning, improving the water use safety and solving the problem in the related art that the non-detachable pure water tank is prone to breeding bacteria and growing moss and is difficult to clean.

[0019] In some embodiments, the pure water tank includes a box body and a cover body. A water pouring port is provided on the box body, and the cover body covers the water pouring port. The pure water tank further includes a handle, and the handle is rotatably connected to the box body. The handle can be rotated above the box body for taking, and the handle can also be rotated to fit against the side wall of the box body for storage. With such a setting, the pure water tank includes a box body, a cover body, and a handle. The cover body can prevent impurities, dust, etc. from entering the box body. The box body can be lifted out through the handle, which is convenient for taking. Moreover, when it is not necessary to use the handle to lift the box body, the handle can be rotated to fit against the side wall of the box body, thus facilitating storage and not occupying space.

[0020] In some embodiments, through holes are provided on the bottom wall of the pure water tank, and the water purifier further includes a one-way valve, which is arranged at the through holes. When the pure water tank is installed in the receiving groove, the one-way valve is conducted. When the pure water tank is removed from the receiving groove, the one-way valve closes to block the through holes.

[0021] In these embodiments, the one-way valve can close when the pure water tank is removed from the machine body, thereby blocking the through holes on the wall of the pure water tank and preventing the pure water tank from leaking after being taken out. When the pure water tank is installed in the machine body, the one-way valve is conducted and the through holes are opened, so that the water in the pure water tank can be pumped out through the through holes and delivered to the water outlet nozzle.

[0022] Other aspects and / or advantages of the general concept of the present invention will be partially described in the following description, and some will be clear from the description, or can be learned through the implementation of the general concept of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Through the description of the embodiments in conjunction with the drawings below, the above and other objects and features of the present invention will become clearer. In the drawings:

[0024] Figure 1 is a schematic structural diagram of a water purifier according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a pure water tank according to an embodiment of the present invention;

[0026] Figure 3 is Figure 2Partial enlarged view at position I in the figure;

[0027] Figure 4 and Figure 5 both are Figure 2 Partial enlarged view at position J in the figure; respectively showing schematic diagrams of a partial enlarged view of a water purifier according to an embodiment of the present invention with the one-way valve in an open state when the pure water tank is installed in the housing, and the one-way valve in a closed state when the pure water tank is removed.

[0028] Figure 6 It is a schematic structural diagram of a water purifier according to an embodiment of the present invention, and the arrows in the figure show the water flow direction;

[0029] Figure 7 It is a schematic structural connection diagram of a water purifier according to an embodiment of the present invention.

[0030] Figures 1 to 7 Explanation of the reference numerals in the attached drawings:

[0031] 10 Pure water tank, 101 Box body, 102 Pouring port, 103 Cover body, 104 Handle, 110 Float guiding part, 111 Water passing hole, 120 Float,

[0032] 20 High water level switch,

[0033] 30 Low water level switch,

[0034] 40 Machine body, 410 Housing, 420 Filter device, 430 Water outlet nozzle,

[0035] 50 One-way valve,

[0036] 60 Original water tank, 610 First water pipe, 620 Second water pipe,

[0037] 70 First liquid conveying device,

[0038] 80 Second liquid conveying device,

[0039] 90 Heating element, 910 Solenoid valve. Detailed implementation manners

[0040] The following detailed implementation manners are provided to help the reader obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent after understanding the disclosure of the present application. For example, the order of operations described herein is merely illustrative and is not limited to those set forth herein, but may be changed as will be apparent after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for greater clarity and conciseness.

[0041] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Instead, the examples described herein are provided only to illustrate some of the many viable ways of implementing the methods, devices, and / or systems described herein, which will be apparent after understanding the disclosure of the present application.

[0042] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more of them.

[0043] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts should not be limited by these terms. Instead, these terms are only used to distinguish one component, element, region, layer, or part from another component, element, region, layer, or part. Thus, a first component, first element, first region, first layer, or first part referred to in the examples described herein may also be referred to as a second component, second element, second region, second layer, or second part without departing from the teachings of the examples.

[0044] In the specification, when an element such as a layer, region, or substrate is described as "on", "connected to", or "coupled to" another element, the element can be directly "on", directly "connected to", or "coupled to" the other element, or there may be one or more other elements therebetween. In contrast, when an element is described as "directly on", "directly connected to", or "directly coupled to" another element, there may be no other elements therebetween.

[0045] The terms used herein are only for describing various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including", and "having" specify the presence of the recited features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term "plurality" represents any quantity of two or more.

[0046] The definitions of directional terms such as "upper", "lower", "top", and "bottom" in this application are all based on the orientation of the product when it is placed upright in its normal use state.

[0047] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs after understanding this utility model. Unless explicitly defined as such herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this utility model, and shall not be interpreted in an idealized or overly formal manner.

[0048] In addition, in the description of the examples, when it is considered that a detailed description of a related structure or function that is well-known will cause a blurred interpretation of this utility model, such a detailed description will be omitted.

[0049] The following will be combined with Figures 1 to 7 Describe the water purifier of some embodiments of this application.

[0050] As Figure 1 、 Figure 2 And Figure 3 As shown, a first aspect of this utility model provides a water purifier, including: a pure water tank 10, a float guiding part 110 is arranged on the inner side wall of the pure water tank 10, and the float guiding part 110 is communicated with the pure water tank 10; a float 120 is arranged in the float guiding part 110, and the float 120 can float to the water surface in the float guiding part 110; a high water level switch 20 is arranged on the outer side wall of the pure water tank 10, and the high water level switch 20 cooperates with the float 120 to trigger the high water level switch 20 when the float 120 reaches the highest water level of the pure water tank 10; a low water level switch 30 is arranged on the outer side wall of the pure water tank 10, and the low water level switch 30 cooperates with the float 120 to trigger the low water level switch 30 when the float 120 reaches the lowest water level of the pure water tank 10.

[0051] For the water purifier proposed in the embodiments of this aspect, a float guiding part 110 is arranged on the inner side wall of the pure water tank 10. The float guiding part 110 has an accommodation cavity inside and extends in the height direction of the pure water tank 10. The float 120 is arranged in the accommodation cavity of the float guiding part 110 and can move up and down with the change of the liquid level. The float guiding part 110 can limit the moving path of the float 120, prevent the float 120 from deviating too far from the setting positions of the high water level switch 20 and the low water level switch 30, so that the water level can be detected by the floating height of the float 120 in the float guiding part 110, and the detection is convenient; further, the high water level switch 20 and the low water level switch 30 are arranged on the outer side wall of the pure water tank 10, so that the distance between the high water level switch 20 and the low water level switch 30 and the float 120 is closer, which is beneficial to accurate induction.

[0052] In some embodiments, as Figure 2 And Figure 3As shown, the float guide portion 110 is formed into a hollow columnar structure, and a plurality of water through holes 111 are distributed at intervals along the height direction of the side wall of the float guide portion 110. With such a setting, the float guide portion 110 can communicate with the pure water tank 10 at multiple positions in the height direction, enabling the change in the water level in the pure water tank 10 to be reflected in the float guide portion 110 in a timely and accurate manner, enabling the water surface in the float guide portion 110 to quickly level with the water surface in the pure water tank 10, and making the induction of the float 120 with the high water level switch 20 and the low water level switch 30 more accurate.

[0053] In some embodiments, as Figure 2 and Figure 3 shown, the interval between two adjacent water through holes 111 is greater than or equal to 5 mm and less than or equal to 15 mm. Within this range, on the one hand, it is possible to avoid the interval between the water through holes 111 being too small, resulting in insufficient structural strength of the product and being prone to deformation; on the other hand, it is possible to avoid the interval between the water through holes 111 being too large, causing the water intake and outlet in the float guide portion 110 to be untimely, resulting in a deviation in the water level between the float guide portion 110 and the pure water tank 10 and affecting the induction accuracy of the float 120 with the high water level switch 20 and the low water level switch 30.

[0054] Furthermore, as an example, optionally, as Figure 2 and Figure 3 shown, the water through holes 111 are round holes. The round water through holes 111 have smoother water intake and outlet, are not likely to cause the float 120 to shake, and moreover, circles are easier to process, facilitating the processing and production of the product.

[0055] In some embodiments, as Figure 3 shown, the float guide portion 110 is formed into a hollow quadrangular prism structure, the float 120 is in the shape of a cube, and the unilateral distance between the float 120 and the inner wall of the float guide portion 110 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. Designing the float 120 as a cube structure makes the shape of the float 120 regular and not likely to rotate under the drive of water flow, thereby making the induction between the float 120 and the high water level switch 20 and the low water level switch 30 more accurate. Furthermore, the unilateral distance between the float 120 and the inner wall of the float guide portion 110 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. Within this range, on the one hand, it is possible to avoid the unilateral distance between the float 120 and the inner wall of the float guide portion 110 being too small, affecting the movement of the float 120 in the float guide portion 110; on the other hand, it is possible to avoid the unilateral distance between the float 120 and the inner wall of the float guide portion 110 being too large, resulting in too large a movement space for the float 120, causing problems such as a large rotation amplitude of the float 120 in the float guide portion 110 and a large deviation from the center of the float guide portion 110, thus affecting the induction between the float 120 and the high water level switch 20 and the low water level switch 30.

[0056] In some embodiments, the float 120 includes a main body portion made of a foaming material and a magnetic member encapsulated inside the main body portion; the high water level switch 20 and / or the low water level switch 30 is a reed switch.

[0057] In these embodiments, the foaming material has the advantages of good buoyancy and being not easily waterlogged, and can drive the magnetic member to float and protect the magnetic member encapsulated therein; the reed switch can change its own switch state when the magnetic member moves into its own magnetic field induction area, so as to cooperate with the magnetic member to realize high and low water level detection, and has the advantages of high detection accuracy and low cost. A magnet is provided in the float 120. When the float 120 moves to a position corresponding to the high water level switch 20 as the water level changes, the high water level switch 20 is triggered to generate a corresponding water supply control signal to stop supplying water to the pure water tank 10. When the float 120 moves to a position corresponding to the low water level switch 30 as the water level changes, the low water level switch 30 is triggered to generate a corresponding water supply control signal to stop supplying water out of the pure water tank 10.

[0058] In some embodiments, as Figure 1 and Figure 6 shown, the water purifier further includes: a body 40, the body 40 includes a housing 410, and a receiving groove with an open top is further provided on the housing 410, and the pure water tank 10 is detachably installed in the receiving groove.

[0059] In these embodiments, it is designed that the pure water tank 10 is built in the housing 410. Compared with the solution of setting the pure water tank 10 outside the housing 410, the pure water tank 10 can utilize the gaps between structures such as the filtering device 420, the heating device, and the water pipe in the housing 410, reducing the volume of the water purifier; further, the pure water tank 10 is detachably installed in the receiving groove, and the pure water tank 10 can be removed for cleaning, improving the water use safety and solving the problem that the non-detachable pure water tank 10 in the related art is prone to breed bacteria and grow moss and is difficult to clean.

[0060] In some embodiments, as Figure 1 and Figure 6As shown, the pure water tank 10 includes a box body 101 and a cover body 103. The box body 101 is provided with a pouring port 102, and the cover body 103 is covered at the pouring port 102. The pure water tank 10 also includes a handle 104, which is rotatably connected to the box body 101. The handle 104 can be rotated to the top of the box body 101 for taking, and the handle 104 can also be rotated to fit with the side wall of the box body 101 for storage. In this way, the pure water tank 10 includes the box body 101, the cover body 103 and the handle 104. The cover body 103 can prevent impurities, dust, etc. from entering the box body 101. The box body 101 can be lifted out by the handle 104 for easy taking, and when the handle 104 is not needed to take the box body 101, the handle 104 can also be rotated to fit with the side wall of the box body 101, so as to facilitate storage without taking up space.

[0061] In some embodiments, the bottom wall of the pure water tank 10 is provided with through holes, such as Figure 2 , Figure 4 and Figure 5 As shown, the water purifier also includes a one-way valve 50, which is arranged at the through hole. When the pure water tank 10 is installed in the receiving tank, the one-way valve 50 is turned on. When the pure water tank 10 leaves the receiving tank, the one-way valve 50 is closed to block the through hole.

[0062] In these embodiments, Figure 5 As shown, the one-way valve 50 can be closed when the pure water tank 10 is removed from the body 40, thereby blocking the through hole on the wall of the pure water tank 10 to prevent the pure water tank 10 from leaking after being removed; Figure 4 As shown, when the pure water tank 10 is installed in the body 40 , the one-way valve 50 is turned on and the through hole is opened, so that the water in the pure water tank 10 can be pumped out from the through hole and transported to the water outlet 430 .

[0063] like Figure 4 As shown in , when the pure water tank 10 is installed in the housing 410, the one-way valve 50 is in an open state, and water can flow freely through the through hole; Figure 5 As shown, when the pure water tank 10 is removed, the one-way valve 50 is in a closed state, the through hole is blocked, and water will not flow outward from the through hole, ensuring that the pure water tank 10 will not leak during the extraction process.

[0064] In some embodiments, Figure 1 , Figure 6 and Figure 7As shown in the figure, the water purifier also includes: a raw water tank 60 for storing water to be filtered; a filtering device 420 disposed between the raw water tank 60 and the pure water tank 10; a first water pipe 610 connecting the raw water tank 60 and the pure water tank 10; a first liquid conveying device 70. The first liquid conveying device 70 and the filtering device 420 are disposed on the first water pipe 610. The first liquid conveying device 70 can convey the water in the raw water tank 60 to the filtering device 420 for filtration, and then convey the water passing through the filtering device 420 to the pure water tank 10; a water outlet 430 disposed on the housing 410 for supplying water to the user; a second water pipe 620 connecting the pure water tank 10 and the water outlet 430. The water purifier further includes a second liquid conveying device 80 and a heating element 90. The second liquid conveying device 80 and the heating element 90 are disposed on the second water pipe 620. The second liquid conveying device 80 can convey the water in the pure water tank 10 to the heating element 90 for heating, and then convey the heated water to the water outlet 430 of the machine body 40.

[0065] In these embodiments, the water purifier further includes a raw water tank 60, a first water pipe 610 and a first liquid conveying device 70. Among them, the first liquid conveying device 70 and the filtering device 420 are disposed on the pipeline of the first water pipe 610. The first water pipe 610 connects the raw water tank 60 and the pure water tank 10. When the first liquid conveying device 70 works, it can convey the water in the raw water tank 60 to the filtering device 420 for filtration, and then convey the filtered water to the pure water tank 10 for storage. Further, the water purifier further includes a second water pipe 620, a heating element 90 and a second liquid conveying device 80. Among them, the second liquid conveying device 80 and the heating element 90 are disposed on the second water pipe 620. The second water pipe 620 connects the pure water tank 10 and the water outlet 430 of the machine body 40. When the second liquid conveying device 80 works, it can convey the water in the pure water tank 10 to the heating element 90 for heating, and then convey the heated water to the water outlet 430 for the user to drink.

[0066] Further, as Figure 1 、 Figure 6 and Figure 7 shown in the figure, the water purifier further includes a third water pipe and a solenoid valve 910. The solenoid valve 910 is disposed on the third water pipe. The third water pipe connects the filtering device 420 and the raw water tank 60. When the first liquid conveying device 70 works, the water in the raw water tank 60 is conveyed to the filtering device 420 and then divided into two paths. One path is filtered and enters the pure water tank 10 via the first water pipe 610, and the other path is waste water, which is backfed to the raw water tank 60 via the third water pipe, realizing waste water recycling and avoiding waste.

[0067] In some embodiments, the first liquid delivery device 70 is connected to the high water level switch 20, and the first liquid delivery device 70 is closed when the float causes the high water level switch 20 to be turned on; the second liquid delivery device 80 is connected to the low water level switch 30, and the second liquid delivery device 80 is closed when the low water level switch 30 is turned on.

[0068] In these embodiments, the first liquid delivery device 70 is connected to the high water level switch 20, so that the on / off of the high water level switch 20 can be associated with that of the first liquid delivery device 70, preventing the water level from exceeding the highest water level line and overflowing from the pure water tank 10, and improving the automatic operation of the product and the convenience for users. Specifically, when the first liquid delivery device 70 operates to inject water into the pure water tank 10, when the water level in the pure water tank 10 reaches the highest water level line, the float 120 senses the high water level switch 20, and the controller generates a control signal corresponding to the high water level, causing the first liquid delivery device 70 to stop operating, and the water level in the pure water tank 10 no longer rises; the second liquid delivery device 80 is connected to the low water level switch 30, so that the on / off of the low water level switch 30 can be associated with that of the second liquid delivery device 80, preventing dangers such as dry burning of the heating element 90 when the water level is lower than the lowest water level line, and improving the automation of the product. Specifically, when the second liquid delivery device 80 operates to pump water out of the pure water tank 10, when the water level in the pure water tank 10 reaches the lowest water level line, the float 120 senses the low water level switch 30, generating a control signal corresponding to the low water level, causing the second liquid delivery device 80 to stop operating, and the water level in the pure water tank 10 no longer drops.

[0069] Although the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It should be understood that, in the view of those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of the present invention defined by the claims.

Claims

1. A water purifier, characterized in that, The water purifier includes: A pure water tank (10), on the inner side wall of the pure water tank (10), a float guiding part (110) is provided, and the float guiding part (110) has a receiving cavity communicating with the pure water tank (10); A float (120), arranged in the receiving cavity of the float guiding part (110), and the float (120) can float to the water surface in the float guiding part (110); A high water level switch (20), arranged on the outer side wall of the pure water tank (10), and the high water level switch (20) cooperates with the float (120) to trigger the high water level switch (20) when the float (120) reaches the highest water level of the pure water tank (10); A low water level switch (30), arranged on the outer side wall of the pure water tank (10), and the low water level switch (30) cooperates with the float (120) to trigger the low water level switch (30) when the float (120) reaches the lowest water level of the pure water tank (10).

2. The water purifier according to claim 1, characterized in that On the side wall of the float guiding part (110), a plurality of water passing holes (111) are distributed at intervals along the height direction of the float guiding part (110), and the receiving cavity is communicated with the pure water tank (10) through the water passing holes (111).

3. The water purifier according to claim 2, characterized in that The interval between two adjacent water passing holes (111) is greater than or equal to 5 mm and less than or equal to 15 mm.

4. The water purifier according to claim 1, characterized in that The float guiding part (110) is a hollow columnar shape, extending along the height direction of the pure water tank (10), and the unilateral distance between the float (120) and the inner wall of the float guiding part (110) is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

5. The water purifier according to claim 1, characterized in that The float (120) includes a main body part made of a foaming material and a magnetic part covered inside the main body part; The high water level switch (20) and / or the low water level switch (30) is a reed switch.

6. The water purifier according to any one of claims 1 to 5, characterized in that, The water purifier further includes: A first liquid conveying device (70), used to supply water to the pure water tank (10), and when the float (120) moves to the corresponding position of the high water level switch (20) and triggers the high water level switch (20), the first liquid conveying device (70) is closed; A second liquid conveying device (80), used to convey the water in the pure water tank (10) outwards, and when the float (120) moves to the corresponding position of the low water level switch (30) and triggers the low water level switch (30), the second liquid conveying device (80) is closed.

7. The water purifier according to claim 6, wherein The water purifier further includes: A raw water tank (60), used to hold the water to be filtered; A first water pipe (610), connecting the raw water tank (60) and the pure water tank (10), A filter device (420), wherein the filter device and the first liquid conveying device (70) are arranged on the first water pipe (610), and the first liquid conveying device (70) can convey the water in the raw water tank (60) to the filter device (420) for filtration, and then convey the water passing through the filter device (420) to the pure water tank (10).

8. The water purifier according to claim 7, wherein, The water purifier also includes: A water outlet is used to supply water to the outside; A second water pipe (620) connected between the pure water tank (10) and the water outlet (430); The heating element (90) is provided on the second water pipe (620), and the second liquid conveying device (80) and the heating element (90) are capable of conveying water in the pure water tank (10) to the heating element (90) for heating, and then conveying the heated water to the water outlet (430).

9. The water purifier according to any one of claims 1 to 5, characterized in that, The water purifier also includes: The casing (410) is also provided with a receiving groove with a top opening, and the pure water tank (10) is detachably installed in the receiving groove.

10. The water purifier according to claim 9, characterized in that: A through hole is provided on the bottom wall of the pure water tank (10), and the water purifier further comprises a one-way valve (50), which is provided at the through hole. When the pure water tank (10) is installed in the receiving tank, the one-way valve (50) is turned on, and when the pure water tank (10) leaves the receiving tank, the one-way valve (50) is closed to block the through hole.

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