A water purifier

Abstract

The application discloses a kind of pure drinking machine, including pure water kettle, ice tank, water outlet, negative pressure opening and closing valve, water shield and water pump, pure water in pure water kettle can be supplemented into ice tank, ice tank is drained by water outlet, the exhaust hole on the top of ice tank is connected with negative pressure opening and closing valve, negative pressure opening and closing valve opens exhaust when the air pressure in ice tank is greater than external air pressure, and it is closed when the air pressure in ice tank is equal to or less than external air pressure;Water shield is fixed in ice tank and separates the inside of ice tank into outer chamber and inner chamber, and water shield is provided with water hole for connecting outer chamber and inner chamber;Ice tank is provided with water suction pipeline, the water outlet of water suction pipeline is communicated with water pump, and the water inlet of water suction pipeline extends to the top area of inner chamber;Water pump is pumped to water outlet by water suction pipeline, and forms negative pressure in ice tank, drives pure water kettle to supplement water to outer chamber, to maintain ice tank full water state.The pure drinking machine of the application improves the problem of delayed dripping of water outlet after closing cold water function.

Description

Technical Field

[0001] This application relates to the field of drinking water treatment equipment technology, specifically to a water purifier. Background Technology

[0002] Existing water purifiers with ice tanks typically also include a filter cartridge, a pure water pitcher, and water outlet components (such as a faucet and a water outlet bend). The purified water produced by the filter cartridge can be pre-stored in the pure water pitcher, which replenishes the ice tank, which then cools the water. The ice tank is generally full. When water needs to be dispensed, room temperature water from the pure water pitcher is pumped into the ice tank, causing the cold water inside to be compressed and discharged through the outlet. Room temperature water is then added to maintain the ice tank's full state. However, this structure still has some technical drawbacks:

[0003] To ensure the ice tank is fully filled with water (especially during initial power-on when there is a large amount of air inside, which must be expelled to achieve a full water level), an air vent valve is usually connected to the ice tank. During water intake, the air vent valve expels the air from the ice tank, allowing it to fill smoothly. However, when water is dispensed from the outlet, a small amount of water will also leak out through the air vent valve. When the outlet is closed, the outside atmosphere connects to the outlet valve, the ice tank, and the outlet, creating an open system where the air pressure is essentially equal to atmospheric pressure. As a result, even after the outlet is closed, residual water continues to be discharged through the outlet due to gravity or inertia, causing the water purifier to continue dripping for a while, failing to immediately stop the flow. This not only wastes water but may also wet surrounding surfaces, affecting the user experience. Some existing technologies add a switch valve to the water outlet. When the flow rate is high, the valve opens; when the flow rate is reduced, the valve closes, stopping the flow. This method is generally ineffective in improving the dripping problem, and the presence of the valve also significantly hinders normal water flow. Furthermore, the temperature of newly added water to the ice tank is higher than the previously stored cold water. Since the ice tank typically lacks a water flow guiding structure, the newly added water may directly rush towards the cold water outlet, resulting in a higher outlet temperature and affecting the use of cold water.

[0004] Given the shortcomings of existing water purifiers with ice tanks, there is an urgent need to improve their structure in order to enhance their performance and user satisfaction. Utility Model Content

[0005] This application aims to solve the problems of delayed dripping after the water is turned off and the direct flow of room temperature water into the cold water outlet when the newly added ice tank is filled. It provides a water purifier that utilizes the negative pressure effect generated by the full water shield. This not only enables the water in the outlet water path to be quickly sucked up and stopped after the water is turned off, achieving the good effect of stopping the water supply immediately after the water is turned off, but also utilizes the blocking effect of the water shield on the newly added water to ensure that the water pump draws as much water as possible from the cold water inside the water shield.

[0006] The technical solution adopted in this application is as follows:

[0007] A water purifier includes a pure water jug, an ice tank, a water outlet, a negative pressure valve, a water shield, and a water pump. Pure water from the pure water jug ​​can replenish the ice tank, which drains water through the water outlet. A vent at the top of the ice tank connects to the negative pressure valve, which opens to release air when the internal pressure of the ice tank is greater than the external pressure, and closes when the internal pressure is equal to or less than the external pressure. The water shield is fixed inside the ice tank and divides it into an outer chamber and an inner chamber. The water shield has a water passage connecting the outer and inner chambers. The ice tank has a water pumping pipe, the outlet of which connects to the water pump, and the inlet of which extends to the top of the inner chamber. The water pump draws water through the water pumping pipe and delivers it to the water outlet, creating negative pressure within the ice tank and driving the pure water jug ​​to replenish water to the outer chamber, maintaining the ice tank at a full level.

[0008] In this technical solution, the vent at the top of the ice tank is connected to a negative pressure valve. When the air pressure inside the ice tank is greater than the external air pressure, the negative pressure valve opens to release air, ensuring normal water replenishment inside the ice tank. For example, when the water purifier is first powered on and water is added to the ice tank through the pure water jug, as the water level inside the ice tank rises, the air pressure inside the ice tank increases, causing the negative pressure valve to open. The gas inside the ice tank is then released through the negative pressure valve. After all the gas is released, the ice tank is full (both the outer and inner chambers are full). When the water purifier is turned on to dispense cold water, the water pump starts, drawing water into the ice tank through the pumping pipe to create a negative pressure suction. This creates a negative pressure environment inside the ice tank, drawing cold water out. Simultaneously, the pure water jug ​​is also drawn into the ice tank by the negative pressure suction, forming a working mode of simultaneously replenishing and dispensing water, thus keeping the ice tank always full. After the water pump stops when the outlet is closed, the ice tank, still full of water, maintains a negative pressure environment. This not only keeps the negative pressure on / off valve closed but also completely water-seals the inlet of the pumping pipe, creating a closed system. When residual water attempts to flow out of the outlet, the air volume inside the pipe increases, causing a pressure drop and creating a low-pressure zone. External atmospheric pressure acts on the surface of the residual water through the outlet, generating an upward thrust that prevents it from flowing out. Therefore, the negative pressure suction effect created by the ice tank on the downstream pipe, combined with the thrust from external atmospheric pressure, means that this residual water is trapped within the pipe and barely drips from the outlet. This improves or even solves the problem of delayed dripping from the outlet after the pump stops. Furthermore, the water inlet of the pump extends to the top of the inner chamber. The stable full water level maintained by the water-blocking shroud helps maintain negative pressure after water flow stops, generating stronger negative suction in the downstream pipe and better confining residual water, allowing for immediate water shut-off. This extension of the pump inlet to the top of the inner chamber aligns with the water flow path in the ice tank's simultaneous replenishment and dispensing mode: when the pump first starts pumping, water from the top of the inner chamber is drawn out first, without mixing with the newly added room temperature water. As more water is drawn out, water from the outer chamber pushes water from the bottom of the inner chamber upwards; this water also remains largely unmixed with the newly added room temperature water, still meeting the user's need for cold water at the desired temperature. Therefore, this design effectively extends the time it takes for the water purifier to dispense the user's required cold water and increases the cold water output. In addition, during use, even if air enters the inner chamber with the water flow, this air will accumulate at the top of the inner chamber. The upper end of the vertical pipe is located at the top of the inner chamber. When the water pump starts, it will first suck up the air at the top of the water-proof cover, thereby quickly establishing negative pressure in the ice chamber. When the machine stops, it will maintain the negative pressure required to prevent dripping.In addition, when the water pump is pumping water, the water shield can prevent the water that has just been added to the ice tank of the pure water jug ​​from rushing directly to the water inlet of the water pumping pipe, so that the water pumped by the water pump is as much cold water as possible from the water shield, and the water discharged from the water outlet is cold water that is more in line with the user's required temperature. Therefore, the existence of the water shield not only improves the negative pressure anti-drip effect, but also serves as a structural barrier for the stratification of newly added room temperature water and cold water, realizing multiple uses of one item.

[0009] The water-proof cover is a cylindrical structure with a closed top, and the water passage hole is formed between the bottom of the water-proof cover and the bottom wall of the ice chamber.

[0010] In this technical solution, by setting the water passage hole at the bottom of the water-proof cover, a specific flow path is defined to enable water flow between the outer and inner chambers. In the working mode of replenishing and discharging water simultaneously, the newly replenished water must enter the inner chamber through the water passage hole at the bottom of the water-proof cover. This can drive the cold water at the bottom of the inner chamber to surge upward, so that the water pump draws as much cold water as possible that meets the required temperature, thus improving the user experience.

[0011] The water pumping pipeline includes a vertical pipe located inside the water-proof cover. The upper end of the vertical pipe forms the water inlet of the water pumping pipeline, and the water inlet extends to a distance of 5mm-10mm from the top wall of the inner cavity.

[0012] In this technical solution, a vertical pipe is installed to supply water to the ice chamber for outflow, resulting in a simple structure. The water inlet end of the vertical pipe extends to a distance of 5mm-10mm from the top wall of the inner chamber, which not only reserves water passage space for water to flow from the inner chamber into the vertical pipe, but also maximizes the height of the water inlet end to optimize the cold water outflow effect.

[0013] The sidewall of the water-proof cover is spaced apart from the sidewall of the ice chamber. A positioning part is connected to the sidewall of the water-proof cover, and the displacement of the water-proof cover is restricted by the positioning part abutting against the sidewall of the ice chamber.

[0014] In this technical solution, the side wall of the water-proof cover is spaced apart from the side wall of the ice chamber, which ensures the smooth flow of water from the pure water jug ​​to the outer chamber and the smooth flow of water from the outer chamber to the inner chamber. The positioning part ensures that the position of the water-proof cover inside the ice chamber is relatively fixed, preventing it from moving randomly and affecting the normal water flow through the water passage and the normal distribution and circulation of water inside the ice chamber, thus enhancing the stability of the structure.

[0015] The positioning part is located on the top of the side wall of the water-proof cover and includes a plurality of supporting ribs evenly distributed along the circumference of the water-proof cover.

[0016] In this technical solution, the positioning part is designed as multiple supporting ribs evenly distributed around the perimeter of the water-proof cover, so that the water-proof cover can be subjected to relatively uniform supporting force in all directions, and can be more stably fixed inside the ice chamber. This effectively prevents the water-proof cover from shifting due to external forces and other factors, and ensures the normal operation of the water flow and related structures built on the basis of the water-proof cover inside the ice chamber. The positioning part is located at the top of the side wall of the water-proof cover, which reduces the disturbance of the positioning part to the new water and cold water, and ensures that the new water and cold water are effectively stratified.

[0017] The negative pressure on / off valve is provided with an exhaust channel, and the exhaust hole is connected to the exhaust channel. A flexible valve plate is provided in the exhaust channel. When a negative pressure environment is formed inside the ice chamber, the flexible valve plate is deformed and bent by the pressure difference between the inside and outside of the ice chamber, thereby sealing the exhaust channel.

[0018] In this technical solution, the flexible valve plate has higher deformation sensitivity under negative pressure. The opening and closing of the exhaust channel is realized by the deformation of the flexible valve plate, forming a seal under negative pressure, ensuring the stability of the negative pressure environment, preventing external air from flowing back into the ice tank and destroying the negative pressure anti-drip effect, and improving the reliability of water shut-off.

[0019] The pure water kettle is connected to the outer chamber through a water supply pipe. The ice tank is provided with a water supply inlet that connects to the water supply pipe. The water supply inlet is staggered from the water passage hole.

[0020] In this technical solution, by staggering the water inlet and the water passage, the newly added water in the ice chamber is forced to flow around a certain path in the outer chamber before reaching the location of the water passage. This prolongs the water flow path of the newly added water into the inner chamber during the water discharge process, promotes the maintenance of the outlet water temperature at a low level, and reduces the direct impact of high-temperature water on the pumping area of ​​the pumping pipe.

[0021] The water inlet is positioned higher on the ice chamber than the water passage is positioned on the waterproof cover.

[0022] In this technical solution, the water inlet is positioned higher, allowing the newly added water to fall naturally to the bottom of the outer chamber by gravity, thus avoiding water flow impacting the water near the water passage and further reducing water temperature fluctuations in the inner chamber.

[0023] Multiple water passages are spaced apart around the perimeter of the water-proof cover, and the water pumping pipe passes through the water-proof cover and extends to the outside of the ice chamber.

[0024] In this technical solution, by distributing multiple water passages circumferentially along the water-proof cover, water can be connected between the outer and inner chambers at multiple locations. When a large flow of cold water is discharged, the cold water around the water-proof cover can flow evenly and fully from the outer chamber towards the inner chamber, increasing the cold water output. Furthermore, the water replenishment speed can keep up with the pump's pumping speed, preventing dry pumping due to slow replenishment of the inner chamber. The water pumping pipe runs through the water-proof cover and extends to the outside of the ice tank, facilitating connection with components such as the pump to achieve the pumping function. This ensures the normal circulation and extraction of water within the ice tank, maintaining the normal operation of the ice tank's related functions in the water purifier.

[0025] The water purifier also includes a water level monitoring device and an exhaust pipe. The water level monitoring device includes a connecting pipe and a float placed inside the connecting pipe. The connecting pipe and the pure water kettle form a communicating vessel structure. The connecting pipe and the negative pressure on / off valve are connected to the exhaust pipe so as to communicate with the external environment through the exhaust pipe.

[0026] In this technical solution, by forming a communicating vessel structure between the connecting pipe and the pure water kettle, water level monitoring of the pure water kettle can be achieved. Using water level monitoring and program control, water can be replenished promptly when the pure water kettle is low, thus meeting the water demand of the pure water kettle simultaneously replenishing the ice tank when water is dispensed. The connecting pipe and the negative pressure on / off valve share a common venting pipe, simplifying the piping structure. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a water circuit diagram of a water purifier provided in an embodiment of this application;

[0029] Figure 2 The isometric view of the water purifier provided in the embodiments of this application Figure 1 ;

[0030] Figure 3 The isometric view of the water purifier provided in the embodiments of this application Figure 2 ;

[0031] Figure 4 A cross-sectional view of the assembly formed by the ice chamber and the water shield provided in the embodiments of this application;

[0032] Figure 5 An assembly drawing of the ice chamber and water barrier provided in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the water-proof cover provided in the embodiments of this application;

[0034] Figure 7 A schematic diagram of the structure of the ice gallbladder provided in the embodiments of this application. Figure 1 ;

[0035] Figure 8 This is a cross-sectional view of the ice gallbladder provided in an embodiment of this application;

[0036] Figure 9 A schematic diagram of the structure of the ice gallbladder provided in the embodiments of this application. Figure 2 ;

[0037] Figure 10 This is a cross-sectional view of the negative pressure on / off valve provided in an embodiment of this application.

[0038] List of components and reference numerals:

[0039] 1. Pure water pitcher;

[0040] 2 ice tank, 21 water pumping pipe, 211 vertical pipe, 212 horizontal pipe, 22 water supply inlet;

[0041] 3. Water outlet components;

[0042] 4. Negative pressure on / off valve; 41. Exhaust passage; 42. Flexible valve plate;

[0043] 5. Waterproof cover, 51. Water passage hole, 52. Supporting rib;

[0044] 6 water pumps;

[0045] 71 outer chamber, 72 inner chamber;

[0046] 8 water supply pipes;

[0047] 9 water level monitoring components, 91 connecting pipes, 92 floats;

[0048] 10. Exhaust pipe. Detailed Implementation

[0049] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0051] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0054] In the embodiments of this application, reference is made to Figures 1 to 10 As shown, a water purifier is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application. The water purifier of this application can be a countertop water purifier, a standing water purifier, or other suitable water purifiers. The accompanying drawings of this application illustrate an embodiment of a countertop water purifier.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the water purifier includes a pure water jug ​​1, an ice tank 2, a water outlet 3, a negative pressure valve 4, a water shield 5, and a water pump 6. The pure water in the pure water jug ​​1 can be replenished into the ice tank 2. The ice tank 2 drains water through the water outlet 3. The pure water in the pure water jug ​​1 comes from the pure water produced by the filter element. The pure water produced by the filter element can usually be directly discharged at the water outlet 3, or it can be stored in the pure water jug ​​1 as the water source for the next batch of room temperature pure water, and also as the water source for replenishing the ice tank 2. The vent at the top of the ice chamber 2 is connected to the negative pressure valve 4. The negative pressure valve 4 opens to release air when the air pressure inside the ice chamber 2 is greater than the external air pressure, and closes when the air pressure inside the ice chamber 2 is equal to or less than the external air pressure. The water-proof cover 5 is fixed inside the ice chamber 2 and divides the ice chamber 2 into an outer chamber 71 and an inner chamber 72. The water-proof cover 5 has a water passage 51 that connects the outer chamber 71 and the inner chamber 72. The ice chamber 2 is provided with a water pumping pipe 21. The outlet end of the water pumping pipe 21 is connected to the water pump 6, and the inlet end of the water pumping pipe 21 extends to the top area of ​​the inner chamber 72. The water pump 6 pumps water through the water pumping pipe 21 and delivers it to the water outlet 3, and forms a negative pressure inside the ice chamber 2, driving the pure water jug ​​1 to replenish water to the outer chamber 71 to maintain the ice chamber 2 full of water.

[0056] When the air pressure inside the ice chamber 2 is greater than the external air pressure, the negative pressure valve 4 is opened to release air due to the pressure inside the ice chamber 2, ensuring that the ice chamber 2 is replenished with water normally. For example, when the water purifier is powered on for the first time and water is added to the ice chamber 2 through the pure water kettle 1, as the water level inside the ice chamber 2 rises, the air pressure inside the ice chamber 2 increases, causing the negative pressure valve 4 to open. The gas inside the ice chamber 2 is discharged through the negative pressure valve 4. After all the gas is discharged, the ice chamber 2 is in a full water state (both the outer chamber 71 and the inner chamber 72 are in a full water state).

[0057] When the water purifier is turned on to dispense cold water, the water pump 6 starts, drawing water into the ice tank 2 through the water pumping pipe 21 to create a negative pressure suction. This creates a negative pressure environment inside the ice tank 2, drawing cold water out. Simultaneously, the pure water kettle 1, under the negative pressure suction, replenishes water into the ice tank 2, creating a continuous water supply and dispensing mode, thus keeping the ice tank 2 full. After the water pump 6 is turned off, the ice tank 2 remains in a negative pressure environment due to its full water state. This not only keeps the negative pressure valve 4 closed but also completely seals the inlet of the water pumping pipe 21, forming a closed system. When residual water attempts to flow out from the outlet 3, the air volume inside the pipe increases, causing a pressure drop and creating a low-pressure area. The external atmospheric pressure acts on the surface of the residual water through the outlet 3, generating an upward force that prevents the residual water from flowing out. Therefore, the negative pressure suction effect created by the ice chamber on the downstream pipe of the pumping pipe 21, combined with the thrust effect of the external atmospheric pressure, means that this residual water is trapped inside the pipe and will not drip from the outlet 3. This improves or even solves the problem of delayed dripping from the outlet 3 after the water pump 6 stops running. Moreover, the water inlet of the pumping pipe 21 extends to the top area of ​​the inner chamber 72. The stable full water state maintained by the water shield 5 helps to enhance the negative pressure maintenance effect after the water flow stops, generating a stronger negative pressure suction in the downstream pipe of the pumping pipe 21, which has a better restraining effect on the residual water, achieving immediate shutdown when the water is turned off. The inlet of the water pump 21 extends to the top of the inner chamber 72, conforming to the water flow path in the ice tank 2's simultaneous water replenishment and dispensing operation mode. Specifically, when the water pump 6 begins pumping, the water at the top of the inner chamber 72 is drawn out first; this water is not mixed with the newly added room temperature water. As more water is drawn out, the water in the outer chamber 71 pushes the water at the bottom of the inner chamber 72 upwards; this water is also largely unmixed with the newly added room temperature water, still meeting the user's need for cold water at the required temperature. Therefore, this design effectively extends the time it takes for the water purifier to dispense the user's required cold water and increases the cold water output. In addition, during use, even if air enters the inner chamber 72 with the water flow, this air will accumulate at the top of the inner chamber 72. The upper end of the vertical pipe 211 is located at the top area of ​​the inner chamber 72. When the water pump 6 starts, it will first suck up the air at the top of the water-proof cover 5, thereby quickly establishing negative pressure in the ice chamber 2. When the machine stops, it will maintain the negative pressure required to prevent dripping.

[0058] In addition, when the water pump 6 is pumping water, the water shield 5 can prevent the water that has just been added to the ice tank 2 of the pure water bottle 1 from rushing directly to the water inlet of the water pumping pipe 21, so that the water pumped by the water pump 6 is as much cold water as possible inside the water shield 5, and the water discharged from the water outlet 3 is cold water that is more in line with the user's required temperature. Therefore, the existence of the water shield 5 not only improves the negative pressure anti-drip effect, but also serves as a structural barrier for the stratification of newly added room temperature water and cold water, realizing multiple uses of one item.

[0059] As a preferred embodiment of this application, such as Figure 4 , Figure 5 and Figure 6 As shown, the water-proof cover 5 is a cylindrical structure with a closed top. A water passage hole 51 is formed between the bottom of the water-proof cover 5 and the bottom wall of the ice chamber 2, defining a specific flow path for water to flow between the outer chamber 71 and the inner chamber 72. In the working mode of the ice chamber 2, which is simultaneously replenished and discharged, the newly replenished water must enter the inner chamber 72 through the water passage hole 51 at the bottom of the water-proof cover 5. During the process of entering the inner chamber 72, it can drive the cold water at the bottom of the inner chamber 72 to surge upward, so that the water pump 6 can draw as much cold water as possible that meets the required temperature, thus improving the user experience. To simplify the manufacturing process, multiple notches can be formed at the bottom of the side wall of the water-proof cover 5, and these notches constitute the water passage hole 51.

[0060] As a preferred embodiment, such as Figure 4 , Figure 7 and Figure 8 As shown, the water pumping pipe 21 includes a vertical pipe 211 located inside the water-proof cover 5. The upper end of the vertical pipe 211 forms the water inlet of the water pumping pipe 21, and the water inlet extends to a distance of 5mm-10mm from the top wall of the inner chamber 72. By setting the vertical pipe 211, water is supplied from the ice tank 2 to the outside. The structure is simple. Specifically, the vertical pipe 211 can be integrally formed on the bottom wall of the ice tank 2. As an alternative embodiment, a connector can also be set at the bottom of the ice tank 2, and the vertical pipe 211 can be inserted into the connector. The water inlet of the vertical pipe 211 extends to a distance of 5mm-10mm from the top wall of the inner chamber 72, which not only reserves the water passage space for the water to flow from the inner chamber 72 to the vertical pipe 211, but also maximizes the height of the water inlet, thereby extending the distance between the water inlet and the water passage hole 51, optimizing the cold water output effect, and in particular, effectively extending the time for the water purifier to discharge the cold water required by the user, and increasing the output of low-temperature cold water.

[0061] In a preferred embodiment, the sidewall of the water-proof cover 5 is spaced apart from the sidewall of the ice chamber 2. A positioning part is connected to the sidewall of the water-proof cover 5, and the displacement of the water-proof cover 5 is restricted by the positioning part abutting against the sidewall of the ice chamber 2. Specifically, the water-proof cover 5 can be positioned close to the middle of the ice chamber 2, so that the spacing between the sidewall of the water-proof cover 5 and each sidewall of the ice chamber 2 is basically the same. The cavity structure of the outer chamber 71 is more regular, and the water flow is more stable. This ensures the smooth flow of water from the pure water bottle 1 to the outer chamber 71 and the smooth flow of water from the outer chamber 71 to the inner chamber 72. The positioning part also ensures that the position of the water-proof cover 5 inside the ice chamber 2 is relatively fixed, preventing it from moving randomly and affecting the normal water flow of the water passage 51 and the normal distribution and circulation of water inside the ice chamber 2, thus enhancing the stability of the structure. In addition, the top wall of the water-proof cover 5 can abut against the top wall structure of the ice chamber 2 or leave some installation gaps, thereby limiting the vertical displacement of the water-proof cover 5 and preventing the water-proof cover 5 from shaking up and down.

[0062] Preferably, the positioning part is located on the top of the side wall of the water-proof cover 5, and includes a plurality of supporting ribs 52 evenly distributed along the circumference of the water-proof cover 5. Figure 5 and Figure 6 The figure shows an embodiment where four supporting ribs 52 are arranged circumferentially around the water-proof cover 5, and the supporting ribs 52 have a cross-shaped structure, which improves the structural strength of the supporting ribs 52. Other suitable numbers and structures of supporting ribs 52 can also be selected. The figure shows that the four supporting ribs 52 are arranged at the same height of the water-proof cover 5. In alternative embodiments, the supporting ribs 52 can be distributed at different heights on the side wall of the water-proof cover 5. In this technical solution, the positioning part is designed as multiple supporting ribs 52 evenly distributed circumferentially around the water-proof cover 5, so that the water-proof cover 5 can be subjected to a more uniform supporting force in all directions, and can be more stably fixed in the ice chamber 2. It effectively prevents translation due to external forces and other factors, and ensures the normal operation of the water flow and related structures built on the basis of the water-proof cover 5 inside the ice chamber 2. The positioning part is set at the top of the side wall of the water-proof cover 5 to reduce the disturbance of the positioning part to the new water and cold water, and ensure the effective stratification of the new water and cold water.

[0063] Regarding the specific structure of the negative pressure on / off valve 4, as a preferred embodiment of this application, as follows: Figure 10 As shown, the negative pressure on / off valve 4 is provided with an exhaust channel 41, and the exhaust hole is connected to the exhaust channel 41. A flexible valve plate 42 (such as a silicone sheet) is provided inside the exhaust channel 41. When a negative pressure environment is formed inside the ice chamber 2, the flexible valve plate 42 is deformed and bent by the pressure difference between the inside and outside of the ice chamber 2, thereby sealing the exhaust channel 41. Figure 10 The diagram shows that the flexible valve plate 42 has an overall conical structure, including multiple circumferentially arranged petal-shaped structures. When the flexible valve plate 42 is affected by the positive pressure inside the ice chamber 2, it expands outward to open the exhaust channel 41; when the flexible valve plate 42 is affected by the suction force of the negative pressure inside the ice chamber 2, it contracts inward to close the exhaust channel 41. The flexible valve plate 42 has high deformation sensitivity under negative pressure. The opening and closing of the exhaust channel 41 is achieved through the deformation of the flexible valve plate 42, forming a seal under negative pressure, ensuring the stability of the negative pressure environment, preventing external air from flowing back into the ice chamber 2 and compromising the negative pressure anti-drip effect, and improving the reliability of the water shut-off function. In alternative embodiments, the negative pressure on / off valve 4 can also use other suitable structures, such as a spring-loaded check valve, a gravity check valve, etc.

[0064] As a preferred embodiment of this application, such as Figure 3 , Figure 7 and Figure 9As shown, the pure water kettle 1 is connected to the outer chamber 71 through the water supply pipe 8. The ice tank 2 is provided with a water supply inlet 22 connected to the water supply pipe 8. The water supply inlet 22 and the water passage hole 51 are staggered. For example, the water supply inlet 22 and the water passage hole 51 can be staggered in a circumferential or vertical manner. In the working mode of the ice tank 2 replenishing water while discharging water, as the cold water output increases, the newly replenished water in the ice tank 2 is forced to flow around a certain path in the outer chamber 71 before reaching the location of the water passage hole 51. This prolongs the water flow path of the newly replenished water entering the inner chamber 72 during the water discharge process, promotes the maintenance of the water temperature at a low level, and reduces the direct contact of high temperature water with the water pumping area of ​​the pumping pipe 21.

[0065] Preferably, the water inlet 22 is positioned higher on the ice chamber 2 than the water passage hole 51 is positioned on the water shield 5. Raising the position of the water inlet 22 allows the newly added water to fall naturally to the bottom of the outer chamber 71 by gravity, preventing water flow from impacting the water near the water passage hole 51, further reducing water temperature fluctuations in the inner chamber 72, and making the cold water temperature pumped by the pump 6 more stable.

[0066] As a preferred embodiment of this application, such as Figure 6 , Figure 7 and Figure 8 As shown, multiple water passage holes 51 are spaced apart circumferentially along the water-proof cover 5, and the water pumping pipe 21 passes through the water-proof cover 5 and extends to the outside of the ice chamber 2. Specifically, one of the water passage holes 51 can form a clearance channel for the water pumping pipe 21 to pass through the water-proof cover 5, and the outline of the water pumping pipe 21 is smaller than the water passage hole 51 to avoid blocking the water passage hole 51. In the aforementioned embodiment where the water pumping pipe 21 includes a vertical pipe 211, the water pumping pipe 21 can also include a horizontal pipe 212. One end of the horizontal pipe 212 is connected to the vertical pipe 211, and the other end extends to the outside of the ice chamber 2 for communication with the water pump 6. The horizontal pipe 212 passes through one of the water passage holes 51 of the water-proof cover 5. In addition, preferably, both the horizontal pipe 212 and the vertical pipe 211 can be integrally formed with the ice chamber 2, simplifying the processing technology and installation procedures. By distributing multiple water passages 51 circumferentially around the water-proof cover 5, water can be connected between the outer chamber 71 and the inner chamber 72 at multiple locations. When a large flow of cold water is discharged, the cold water around the water-proof cover 5 can flow evenly and fully from the outer chamber 71 towards the inner chamber 72, increasing the cold water output. Furthermore, the water replenishment speed can keep up with the pumping speed of the water pump 6, preventing the inner chamber 72 from being pumped dry due to slow replenishment. The water pumping pipe 21 passes through the water-proof cover 5 and extends to the outside of the ice tank 2, facilitating connection with components such as the water pump 6 to achieve the pumping function. This ensures the normal circulation and extraction of water within the ice tank 2, maintaining the normal operation of the ice tank 2's related functions in the water purifier.

[0067] As a preferred embodiment of this application, such as Figure 1 and Figure 3As shown, the water purifier also includes a water level monitoring component 9 and an exhaust pipe 10. The water level monitoring component 9 includes a connecting pipe 91 and a float 92 placed inside the connecting pipe 91. The connecting pipe 91 and the pure water kettle 1 form a communicating vessel structure. The connecting pipe 91 and the negative pressure on / off valve 4 are connected to the exhaust pipe 10, so as to connect with the external environment through the exhaust pipe 10. In this technical solution, by making the connecting pipe 91 and the pure water kettle 1 form a communicating vessel structure, the water level of the pure water kettle 1 can be monitored. Using water level monitoring and program control, water can be added to the pure water kettle 1 in time when it is low on water, so as to meet the water demand of the pure water kettle 1 simultaneously adding water to the ice tank 2 when water is dispensed from the ice tank 2. The connecting pipe 91 and the negative pressure on / off valve 4 share the exhaust pipe 10 for exhaust, which simplifies the pipe structure. Specifically, the exhaust pipe 10 can be directly connected to the outside atmosphere, or it can be used... Figure 1 In the embodiment shown, the exhaust pipe 10 is connected to the water outlet 3, and exhaust is carried out through the water outlet 3.

[0068] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0069] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0070] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A water purifier, comprising a pure water pitcher, an ice tank, and a water outlet, wherein pure water in the pure water pitcher can replenish the ice tank, and the ice tank drains water through the water outlet, characterized in that, It also includes negative pressure on / off valves, water shields, and water pumps; The vent at the top of the ice chamber is connected to the negative pressure valve. The negative pressure valve opens to release air when the air pressure inside the ice chamber is greater than the external air pressure, and closes when the air pressure inside the ice chamber is equal to or less than the external air pressure. The water-proof cover is fixed inside the ice chamber and divides the ice chamber into an outer chamber and an inner chamber. The water-proof cover is provided with a water passage hole that connects the outer chamber and the inner chamber. The ice chamber is equipped with a water pumping pipe, the outlet of which is connected to the water pump, and the inlet of which extends to the top area of ​​the inner chamber. The water pump pumps water through the water pumping pipe to the water outlet and creates a negative pressure inside the ice chamber, driving the pure water jug ​​to replenish water to the outer chamber to maintain the ice chamber full of water.

2. The water purifier according to claim 1, characterized in that, The water-proof cover is a cylindrical structure with a closed top, and the water passage hole is formed between the bottom of the water-proof cover and the bottom wall of the ice chamber.

3. The water purifier according to claim 2, characterized in that, The water pumping pipeline includes a vertical pipe located inside the water-proof cover. The upper end of the vertical pipe forms the water inlet of the water pumping pipeline, and the water inlet extends to a distance of 5mm-10mm from the top wall of the inner cavity.

4. The water purifier according to claim 2, characterized in that, The sidewall of the water-proof cover is spaced apart from the sidewall of the ice chamber. A positioning part is connected to the sidewall of the water-proof cover, and the displacement of the water-proof cover is restricted by the positioning part abutting against the sidewall of the ice chamber.

5. The water purifier according to claim 4, characterized in that, The positioning part is located on the top of the side wall of the water-proof cover and includes a plurality of supporting ribs evenly distributed along the circumference of the water-proof cover.

6. The water purifier according to claim 1, characterized in that, The negative pressure on / off valve is provided with an exhaust channel, and the exhaust hole is connected to the exhaust channel. A flexible valve plate is provided in the exhaust channel. When a negative pressure environment is formed inside the ice chamber, the flexible valve plate is deformed and bent by the pressure difference between the inside and outside of the ice chamber, thereby sealing the exhaust channel.

7. The water purifier according to claim 1, characterized in that, The pure water kettle is connected to the outer chamber through a water supply pipe. The ice tank is provided with a water supply inlet connected to the water supply pipe, and the water supply inlet is staggered from the water passage hole.

8. The water purifier according to claim 7, characterized in that, The water inlet is positioned higher on the ice chamber than the water passage is positioned on the waterproof cover.

9. The water purifier according to claim 1, characterized in that, Multiple water passages are spaced apart around the circumference of the water-proof cover, and the water pumping pipe passes through the water-proof cover and extends to the outside of the ice chamber.

10. The water purifier according to claim 1, characterized in that, The water purifier also includes a water level monitoring device and an exhaust pipe. The water level monitoring device includes a connecting pipe and a float placed inside the connecting pipe. The connecting pipe and the pure water kettle form a communicating vessel structure. The connecting pipe and the negative pressure on / off valve are connected to the exhaust pipe so as to communicate with the external environment through the exhaust pipe.

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