Water boiler capable of preventing water dripping during heating

Abstract

The utility model discloses a water boiler capable of preventing water from dripping during heating, which comprises a heating tank body, a water inlet, a water outlet, a water outlet and a water outlet pipe, wherein the water outlet of the heating tank body is arranged at the top end of the heating tank body; the auxiliary water tank is mounted at the top of the heating tank body; the position of a water outlet of the heating tank body is higher than that of the auxiliary water tank; the pipeline connecting assembly is respectively connected with the heating tank body and the auxiliary water tank through water pipes; wherein an external water source enters the heating tank body through the connecting pipe to form a water inlet pipeline of the water boiler; when the heating tank body heats the water source, the connecting pipe stops the external water source from entering, and hot water can flow back to the auxiliary water tank through the connecting pipe. The auxiliary water tank and the pipeline connecting assembly are additionally arranged on the water boiler, so that the phenomenon that water vapor flows into the water outlet of the water boiler due to overlarge pressure in the water boiler and is condensed into water drops to continuously drop from the water outlet under the influence of the gravity effect, and then the phenomenon that boiled water drips is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical appliances, specifically relates to a kind of boiling water apparatus of anti-heating water drop. BACKGROUND

[0002] In daily life and many public and commercial places, the traditional water storage type boiling water apparatus is widely used in actual use process Problem-Boiling water drip phenomenon, people feel bad, and drip easy scald.

[0003] Some boiling water apparatuses to avoid dripping phenomenon when heating, a vent pipe is designed to increase on the boiling water apparatus, the vent pipe is led out from the top of the boiling water apparatus, and then connected to the drip, such product installation is troublesome, and the odor in sewer will return to the boiling water apparatus.In some areas, due to no floor drain drainage, resulting in water heater installation is limited.

[0004] A utility model patent (CN211926126U) discloses a kind of double-function heater and water system thereof, comprising first heating unit for heating washing water and second heating unit for heating drinking water;Water inlet pipe of the second heating unit is provided with Venturi tube, and the Venturi tube includes contraction section and expansion section;The contraction section of the Venturi tube is connected with the elastic bag that can be contracted.

[0005] Research has found that when the above-mentioned elastic bag that can be contracted is at the same height as the boiling water apparatus, and the contraction bag expands and contracts frequently to balance air pressure, the internal pressure of the boiling water apparatus changes periodically, causing unstable water pressure at the water outlet, resulting in dripping of the boiling water apparatus. UTILITY MODEL CONTENT

[0006] In order to overcome the above technical defects, the utility model provides a kind of boiling water apparatus of anti-heating water drop.

[0007] In order to solve the above problems, the utility model is realized according to the following technical scheme:

[0008] The boiling water apparatus of anti-heating water drop provided by the utility model comprises a heating tank body, and the water outlet position of the heating tank body is arranged at the top end of the heating tank body.

[0009] A secondary water tank is installed on the top of the heating tank body.

[0010] Preferably, the water outlet position of the heating tank body is higher than the position of the secondary water tank.

[0011] A pipe connection assembly is connected to the heating tank body and the secondary water tank by a water pipe.

[0012] Preferably, the pipe connection assembly comprises:

[0013] A connector, the connector comprising a first interface channel, a second interface channel and a third interface channel that are interconnected;

[0014] A water inlet pipe, one end of which is connected to an external water source, and the other end of which is connected to a flange;

[0015] An acceleration pipeline, wherein the inlet of the acceleration pipeline is connected to the flange, and the outlet of the acceleration pipeline is located in the first interface channel and connected to the connector.

[0016] A speed-reducing pipeline, wherein the inlet of the speed-reducing pipeline is connected to the connector through the second interface channel, and the outlet of the speed-reducing pipeline is connected to the inlet of the heating tank;

[0017] The third interface channel is connected to the water inlet of the auxiliary water tank;

[0018] Wherein, the acceleration pipeline is located at one end face of the first interface channel that extends beyond the first interface channel, and there is a gap between the acceleration pipeline and the deceleration pipeline.

[0019] Preferably, the acceleration pipeline includes a first conical tube and a cylindrical tube connected in sequence, wherein the diameter of the first conical tube gradually decreases along the direction from the first conical tube to the cylindrical tube.

[0020] Preferably, the deceleration pipe is a second conical pipe, and the diameter of the second conical pipe gradually increases along the direction close to the water inlet of the heating tank.

[0021] Preferably, the pipe connection assembly is made of stainless steel.

[0022] Preferably, the auxiliary water tank adopts a double-layer structure, the auxiliary water tank is a rigid structure, and the interior of the auxiliary water tank has a sealed flexible water storage container;

[0023] The flexible water storage container is connected to the third interface channel, and hot water can flow back to the flexible water storage container of the auxiliary water tank through the pipe connection assembly.

[0024] Preferably, the top of the auxiliary water tank is provided with several through holes.

[0025] Preferably, the flexible water storage container is made of food-grade elastic plastic.

[0026] Preferably, the heating tank includes an outer shell and an inner liner, wherein the outer wall of the inner liner is fitted with the inner wall of the outer shell.

[0027] Preferably, the heating system is installed at the bottom of the heating tank; wherein the load of the heating system is less than 15 W / cm².

[0028] A temperature control system is installed in the middle of the side wall of the heating tank body.

[0029] A temperature probe is installed at the water outlet of the heating tank body.

[0030] Compared with the prior art, the water boiler has the beneficial effects that:

[0031] The water boiler comprises a heating tank body, a water outlet of the heating tank body is arranged at the top end of the heating tank body, a secondary water tank is installed at the top of the heating tank body, the water outlet position of the heating tank body is higher than the position of the secondary water tank, and a pipeline connecting assembly is arranged and connected to the heating tank body and the secondary water tank through a water pipe.

[0032] Since the water outlet position of the heating tank body is higher than the position of the secondary water tank, the secondary water tank is arranged at the top of the heating tank body, when the heating tank body normally works, hot water is absorbed by the secondary water tank, the air pressure in the heating tank body is balanced, and water vapor is prevented from flowing into the water outlet of the heating tank body to cause the dripping phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0033] The specific embodiments of the utility model will be further described in detail below in combination with the drawings, wherein:

[0034] Fig. 1 is a perspective structural schematic view of the water boiler of the utility model.

[0035] Fig. 2 is a top view of the water boiler of the utility model.

[0036] Fig. 3 is an explosion view of the Venturi tube of the water boiler of the utility model.

[0037] Fig. 4 is a schematic view of the pipeline connecting assembly of the water boiler of the utility model.

[0038] Fig. 5 is Fig. 4 A-A sectional view of the water boiler of the utility model.

[0039] In the drawings: 1-heating tank body, 2-secondary water tank, 3-pipeline connecting assembly, 301-water inlet pipeline, 302-accelerating pipeline, 303-connection body, 304-decelerating pipeline, 4-heating system, 5-temperature control system, 6-temperature probe. DETAILED DESCRIPTION

[0040] The preferred embodiments of the utility model will be described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for describing and explaining the utility model, and are not used for limiting the utility model.

[0041] like Figs. 1-5 As shown, this utility model discloses a preferred structure for a water heater that prevents dripping water during heating.

[0042] Example 1

[0043] This embodiment provides a water heater that prevents dripping during heating. The water heater is installed lower than the faucet, ensuring a height difference of at least 300mm. The water heater's outlet is located at the top of its heating tank 1, and the outlet is directly connected to the faucet's outlet pipe, which is open to the atmosphere. When the user turns on the faucet, water flows from top to bottom through the pipe connection assembly 3 into the water heater's inner tank. During this process, as the water flows from the inlet pipe 301 into the acceleration pipe 302, according to fluid mechanics principles, the water flow speed increases, creating a negative pressure zone in the gap between the outlet of the acceleration pipe 302 and the deceleration pipe 304. This negative pressure zone significantly reduces the pressure of the incoming water flow, effectively preventing excessive impact on the internal pipes of the water heater due to excessive water pressure, thus preventing damage or dripping of the internal pipes of the heating tank 1. When the water level inside the water heater reaches its upper limit, the user turns off the faucet, and the water heater begins its heating process. As the boiling process continues and time passes, a large amount of water evaporates from the inner tank of the kettle, producing more and more steam, which causes the internal pressure of the inner tank to rise sharply. At this time, the hot water in the inner tank will flow into the inner tank of the kettle through the pipe connection component 3, thereby achieving a balance regulation of the internal pressure of the kettle and effectively preventing steam from flowing into the kettle's outlet. Under the influence of gravity, the steam will condense into water droplets and drip continuously from the outlet, thus causing the boiling water to leak.

[0044] Based on the Venturi principle, when the water flow is stable in the pipe connecting assembly 3, the water flow of the faucet first flows from the water inlet pipe 301, then flows through the accelerating pipe 302, the connecting body 303 and the decelerating pipe 304 in turn into the heating tank 1. An interface passage is arranged on the side of the connecting body 303, and the interface passage is connected to the water inlet of the auxiliary water tank 2. In the entire water flow system, when the total amount of water flow is unchanged, the hole diameter of the first tapered pipe of the accelerating pipe 302 gradually decreases along the direction from the first tapered pipe to the cylindrical pipe, so that the water flow speed increases when passing through this place. According to Bernoulli's principle, the increase of flow speed leads to the decrease of pressure, so that when the water flow passes through the outlet of the accelerating pipe 302 and then quickly passes through the gap between the accelerating pipe 302 and the decelerating pipe 304 to enter the decelerating pipe 304, a negative pressure is generated near the outlet of the accelerating pipe 302, that is, a vacuum area is formed in the cavity. In order to ensure that the pressure inside the auxiliary water tank 2 is always equal to the external pressure, the auxiliary water tank will have two different states, namely the first state and the second state. In the first state, because the pressure in the inner container is relatively high, the pressure difference between the auxiliary water tank 2 and the inner container is negative, at this time the hot water in the inner container will flow into the auxiliary water tank 2 through the pipe connecting assembly 3 under the action of the pressure difference, so that the auxiliary water tank 2 is restored to its original state under the action of internal air pressure. When the water flow flows into the water pipe, because the hole diameter of the decelerating pipe 304 gradually increases along the direction away from the accelerating pipe 302, the water flow will flow into the inner container along the inner wall of the decelerating pipe 304 in a dispersed manner. This dispersed water flow pattern makes the water flow volume of the decelerating pipe 304 larger, according to the continuity equation in fluid mechanics, the flow rate decreases while the pressure also decreases, thereby further ensuring that the water flow pressure flowing into the inner container is lower than that when the water flow directly flows into the inner container, and the water flow pressure is reduced from multiple links, which effectively prevents the damage of excessive water pressure to the internal pipe of the water boiler.

[0045] When the water flow into the inner container reaches the upper limit, the water flow stops flowing, and the water boiler starts to work. As the water boiling time gradually increases, the water vapor in the water boiler inner container continues to be generated and the amount is more and more, the pressure in the inner container also increases continuously. At this time, the hot water in the inner container will flow into the connecting body through the speed reduction pipeline 304 in reverse, and because the outlet of the acceleration pipeline 302 and the inlet of the speed reduction pipeline 304 always exist negative pressure area, part of the boiling water in the water boiler inner container is sucked into the auxiliary water tank 2, so that the internal pressure of the inner container and the external pressure are always in balance. Because in the first state before, the auxiliary water tank 2 has been contracted, thereby reducing the volume of the water storage cavity. And when the hot water continues to flow into the auxiliary water tank 2, the internal pressure of the auxiliary water tank 2 and the pressure of the inner container gradually equal, the auxiliary water tank 2 will gradually restore its deformation under the action of its own elasticity, thereby increasing the volume of the auxiliary water tank 2, thereby realizing the balance of the pressure in the inner container. In this process, the hot water in the water boiler can flow smoothly into the auxiliary water tank 2, effectively avoiding the problem of water dripping caused by high air pressure.

[0046] As shown in Figs. 1-2 The utility model discloses a kind of water boilers of preventing heating dripping, comprising: heating tank body 1, the water outlet of the heating tank body 1 is located at the top end of the heating tank body 1;Auxiliary water tank 2, the auxiliary water tank 2 is installed at the top of the heating tank body 1;Wherein, the water outlet position of the heating tank body 1 is higher than the position of the auxiliary water tank 2;Pipeline connection assembly 3, the pipeline connection assembly 3 is connected with the heating tank body 1 and the auxiliary water tank 2 respectively by water pipe.

[0047] In detail, the position of the sealed water storage container is higher than the heating tank body 1, which is beneficial to the natural convection circulation in the water boiler. Hot water will naturally rise, and cold water will fall. The sealed water storage container located at the top will not hinder the path of this natural convection, so that the water in the water boiler can exchange heat more effectively. When the internal pressure of the water boiler suddenly rises, due to the higher position of the sealed water storage container, there is a certain height difference between the sealed water storage container and the water boiler. The pressure transmitted to the sealed water storage container needs to overcome the gravity and a certain pipeline resistance, which can make the sealed water storage container adjust the pressure more smoothly.

[0048] As shown in Figs. 3-5 In a specific implementation, the pipeline connection assembly 3 includes:

[0049] The connecting body 303 includes a first interface channel, a second interface channel and a third interface channel that are in communication with each other.

[0050] The water inlet pipeline 301 has one end connected to an external water source and the other end connected to a flange.

[0051] An accelerating pipeline 302, a water inlet of the accelerating pipeline 302 is connected with the flange, and the accelerating pipeline 302 is connected with the connecting body 303 through the first interface channel;

[0052] A decelerating pipeline 304, the decelerating pipeline 304 is connected with the connecting body 303 through the second interface channel;

[0053] The third interface channel is connected with a water inlet of the auxiliary water tank 2.

[0054] The accelerating pipeline 302 is located at one end of the first interface channel, and the accelerating pipeline 302 exceeds the first interface channel at an end face, and there is a gap between the accelerating pipeline 302 and the decelerating pipeline 304.

[0055] In a specific implementation, a distance between a water outlet of the accelerating pipeline 302 and a water inlet of the decelerating pipeline 304 is 3mm-8mm. The gap between the accelerating pipeline 302 and the decelerating pipeline 304 is 3mm-8mm, in this range, the area of the increased vacuum region of the cavity is larger, and the generated adsorption force is stronger, the adsorption effect is better, which is beneficial to avoid the problem that the water source in the auxiliary water tank 2 is blocked when entering the inner container of the water boiler through the interface channel, or the problem that the hot water in the inner container of the water boiler is sucked into the auxiliary water tank.

[0056] In a specific implementation, when water is injected into the heating tank body, the external water source is transported along the water inlet pipeline 301, the acceleration pipeline 302, the connecting body 303, and the speed reduction pipeline 304 to the inner container of the heating tank body 1. Since the end face of the acceleration pipeline 302 located in the first interface channel exceeds the inner wall position of the third interface channel, a cavity is formed in the connecting body 303 and around the acceleration pipeline 302. There is a gap between the acceleration pipeline 302 and the speed reduction pipeline 304. When the external water source is accelerated by the acceleration pipeline 302 from the water inlet pipeline 301, the flow rate is accelerated, and when the water source rapidly passes through the gap between the acceleration pipeline 302 and the speed reduction pipeline 304 after passing through the outlet of the acceleration pipeline, a negative pressure is generated near the outlet of the acceleration pipeline 302, that is, a vacuum area is formed in the cavity, thereby generating a strong suction force at the inlet of the third interface channel, which has a suction effect on the flexible water storage container passing through the third interface channel, and the water source or air in the flexible water storage container is sucked into the speed reduction pipeline 304 and flows into the heating tank body 1 together with the external water source. When the heating tank body 1 heats the water source and the water outlet of the heating tank body 1 is not opened, the heating tank body 1 stops injecting the water source. As the heating time increases, the water in the heating tank body 1 gradually changes into water vapor, causing the internal pressure to continuously increase and expand. At this time, due to the relatively low air pressure in the flexible water storage container, the hot water in the heating tank body 1 flows back to the flexible water storage container under the action of the pressure difference, thereby effectively reducing the air pressure in the heating tank body 1, preventing the water vapor in the heating tank body 1 from flowing into the water outlet pipeline of the heating tank body 1 due to excessive air pressure, and solving the problem of dripping in the water boiler, thereby improving the safety and reliability of the water boiler. If the faucet at the water outlet of the heating tank body 1 is opened, the water in the flexible water storage container flows into the heating tank body 1 due to gravity, and the hot water in the heating tank body is pressed out, and the heating tank body is supplemented with liquid.

[0057] In a specific implementation, the acceleration pipeline 302 includes a first tapered pipe and a cylindrical pipe connected in sequence, and the aperture of the first tapered pipe gradually decreases along the direction from the first tapered pipe to the cylindrical pipe. According to the continuity equation, when the cross-sectional area of the pipeline decreases, the flow rate of the water flow in the first tapered pipe increases to maintain a relatively stable high-speed state of the water flow in the cylindrical pipe, so that the water source entering the acceleration pipeline 302 from the water inlet pipeline 301 is accelerated, thereby increasing the flow rate of the water source. The cylindrical pipe is provided after the first tapered pipe to ensure that the water source flows smoothly after reaching a certain flow rate, thereby ensuring that the water source has a stable flow rate when flowing out of the outlet of the acceleration pipeline, thereby generating a stable suction force to enable the water flow or air in the auxiliary water tank 2 to be sucked into the inner container along with the water flow.

[0058] Specifically, the first conical tube is reduced in aperture from at least 5 mm to 1-2 mm at an angle of 15-30°, and the length of the cylindrical tube is 2-4 times the aperture of the cylindrical tube.

[0059] In one embodiment, the speed-reducing tube 304 is a second conical tube, and the aperture of the second conical tube gradually increases in the direction close to the water inlet of the heating tank. According to the Bernoulli principle, when water flows from a high-speed area into a second conical tube with gradually increasing cross-sectional area, the kinetic energy is partially converted into pressure energy, thereby reducing the speed of the fluid. In detail, the aperture of the speed-reducing tube 304 gradually increases in the direction away from the accelerating tube 302 and close to the water outlet, which is beneficial to reduce the flow speed of the water source while ensuring the smoothness of the water flow, thereby preventing the water flowing into the water boiler from directly impacting the internal piping system of the water boiler, causing damage to the piping and reducing the service life of the water boiler.

[0060] Specifically, the aperture of the speed-reducing tube 304 is expanded from 2-3 mm to 6-10 mm at an angle of 10-20°, which can better ensure the smoothness of the water flow in the speed-reducing tube 304 and better reduce the impact of water pressure on the internal piping of the water boiler.

[0061] In one embodiment, the angle between the connecting body 303 and the interface channel is 60-120°. In detail, the angle between the connecting body 303 and the interface channel is in the range of 60-120°, which can maximize the suction efficiency of the secondary water tank 2 on the boiling water in the heating tank 1.

[0062] In one embodiment, the secondary water tank 2 is a hard structure, and the inside of the secondary water tank 2 has a sealed flexible water storage container; wherein the flexible water storage container is connected with the third interface channel, and hot water can flow back to the flexible water storage container of the secondary water tank through the pipe connection assembly 3. The hard structure of the secondary water tank 2 provides stable support and protection for the flexible water storage container, which is not easy to be damaged; when the air pressure in the heating tank 1 becomes larger and larger, the flexible water storage container will suck the water in the heating tank 1 into the flexible water storage container, thereby adjusting the air pressure inside the heating tank 1.

[0063] In one embodiment, the top of the secondary water tank 2 is provided with a plurality of through holes, which can ensure that the air pressure outside the flexible water storage container is the same as the external air pressure, thereby ensuring that the flexible water storage container has sufficient capacity to cope with the change of air pressure in the heating tank 1 and the backflow of hot water.

[0064] In a specific implementation, the flexible water storage container is made of food-grade elastic plastic. In this specific implementation, silicone is used as the material. Silicone has good high-temperature resistance and can maintain stable physical and chemical properties within a wide temperature range. This allows the flexible water storage container to maintain good performance during long-term storage and use of hot water, ensuring normal operation and service life of the flexible water storage container. Silicone is a non-toxic, odorless, and odorless material with stable chemical properties, and does not react with hot water to produce harmful substances dissolved in water, ensuring the purity and safety of hot water and being harmless to human health.

[0065] In a specific implementation, the heating tank 1 includes an outer shell and an inner container, and the outer wall of the inner container is in close contact with the inner wall of the outer shell.

[0066] In a specific implementation, the heating system 4 is installed at the bottom of the heating tank 1 for heating the water in the inner container.

[0067] The load of the heating system 4 is less than 15 w / cm 2 . In detail, in order to prevent some adverse phenomena caused by excessive heating power of the heating system 4, such as excessive bottom boiling phenomenon in the heating tank 1 during heating, which in turn causes more boiling water to flow back to the auxiliary water tank 2, causing the auxiliary water tank 2 to fail, etc., the load of the heating system 4 is controlled to be less than 15 w / cm 2 , ensuring the stability and reliability of the heating process, and also improving the safety and service life of the entire water boiler system. The temperature control system 5 is installed in the middle of the side wall of the heating tank 1 for controlling the water temperature in the inner container. The temperature probe 6 is installed at the water outlet of the heating tank 1. In detail, the heating system 4 is used to control the heating of the water boiler, the temperature control system 5 can monitor the change of water temperature in the heating tank 1 in real time, and control the working state of the heating system 4 according to the preset temperature range, to control the water temperature, avoid excessive high or low water temperature, and ensure that users can obtain hot water with appropriate temperature at any time, improving user experience. The temperature probe 6 is installed at the water outlet of the heating tank 1, which functions to monitor the temperature of the hot water flowing out of the heating tank 1 in real time, and feed back the water temperature data to the temperature control system 5, so that the system can adjust the heating system 4 and the temperature control system 5 according to the actual water temperature, to ensure that the water temperature at the water outlet of the water boiler is always stable at a high standard.

[0068] In actual practical process, when the water boiler is in the water injection state, the external water source flows through the water inlet pipeline 301, the acceleration pipeline 302, the connecting body 303 and the speed reduction pipeline 304 to the inner container of the heating tank body 1, because the end face of the acceleration pipeline 302 located in the first interface channel exceeds the first interface channel and also exceeds the inner wall position of the third interface channel, a cavity is formed in the connecting body 303 and the periphery of the acceleration pipeline 302. And there is a gap between the acceleration pipeline 302 and the speed reduction pipeline 304, when the external water source is accelerated by the water inlet pipeline 301 through the acceleration pipeline 302, the flow rate is accelerated, when the accelerated water source passes through the gap between the acceleration pipeline 302 and the speed reduction pipeline 304 after the acceleration pipeline outlet, a negative pressure is generated near the acceleration pipeline 302 outlet, that is, the cavity forms a vacuum area, and then a strong adsorption force is generated at the inlet of the third interface channel, the flexible water storage container passing through the third interface channel is adsorbed, that is, the flexible water storage container is deformed, the air or water in the flexible water storage container is adsorbed and flows into the heating tank body 1 with the external water source, until the water source in the water boiler heating tank body 1 is injected to the upper limit, the water boiler stops water injection. At this time, the water boiler heats the water source in the heating tank body 1, with the passage of time, the air pressure in the heating tank body 1 gradually expands, that is, the water gradually changes into water vapor, because the air pressure in the flexible water storage container is lower than the air pressure in the heating tank body 1, at this time, the flexible water storage container absorbs the hot water in the heating tank body, that is, the flexible water storage container restores to the original state, reduces the air pressure in the heating tank body 1, so as to balance the internal air pressure of the water boiler and prevent the water boiler from dripping.

[0069] The working principle of the water boiler for preventing heating and dripping is that water is injected into the inner container and heated, and the heated water is stored in the inner container. When the user opens the valve to take water, a pressure difference is generated between the inside of the inner container and the external environment, and under the driving of the pressure difference, the boiled water in the inner container will flow out along the water outlet pipe smoothly to meet the water demand of the user. In the running process of the water boiler, when the water level in the water boiler reduces to the set lower limit value, the water boiler will stop heating operation, and the water inlet valve will be opened to re-inject water source. With the continuous injection of water source, the water level gradually rises, and when the water level reaches the preset upper limit value, the water inlet valve is closed, and the water boiler starts the heating program again to restore the normal working state, and the cycle is repeated to ensure that the user can continuously and stably obtain hot water.

[0070] Other structures of the water boiler for preventing heating and dripping according to the embodiment are known in the art.

[0071] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any modification, equivalent change and modification of the above embodiments, which does not deviate from the technical solution of the present application and is based on the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A water heater that prevents dripping water during heating, characterized in that, include: A heating tank (1) has its outlet installed at the top of the heating tank (1); A secondary water tank (2) is installed on top of the heating tank (1); The outlet of the heating tank (1) is located higher than that of the auxiliary water tank (2); Pipe connection assembly (3) connects the heating tank (1) and the auxiliary water tank (2) via water pipes.

2. A water heater with anti-dripping function according to claim 1, characterized in that... The pipe connection assembly (3) includes: A connector (303) includes a first interface channel, a second interface channel, and a third interface channel that are interconnected. Water inlet pipe (301), one end of which is connected to an external water source, and the other end of which is connected to a flange; An acceleration pipeline (302) is provided, wherein the inlet of the acceleration pipeline (302) is connected to the flange, and the outlet of the acceleration pipeline (302) is located in the first interface channel and connected to the connector (303). A speed-reducing pipeline (304) is provided, the inlet of which is connected to the connector (303) through the second interface channel, and the outlet of which is connected to the inlet of the heating tank (1). The third interface channel is connected to the inlet of the auxiliary water tank (2); The acceleration pipeline (302) is located at one end face of the first interface channel that extends beyond the first interface channel, and there is a gap between the acceleration pipeline (302) and the deceleration pipeline (304).

3. A water heater with anti-dripping function according to claim 2, characterized in that: The acceleration pipeline (302) includes a first tapered tube and a cylindrical tube connected in sequence, wherein the diameter of the first tapered tube gradually decreases along the direction from the first tapered tube to the cylindrical tube.

4. A water heater with anti-dripping function according to claim 2, characterized in that: The speed reduction pipeline (304) is a second conical pipe, and the diameter of the second conical pipe gradually increases along the direction close to the water inlet of the heating tank.

5. A water heater with anti-dripping function according to claim 2, characterized in that: The auxiliary water tank (2) is a rigid structure, and the interior of the auxiliary water tank (2) has a sealed flexible water storage container; The flexible water storage container is connected to the third interface channel, and hot water can flow back to the flexible water storage container of the auxiliary water tank (2) through the pipe connection assembly (3).

6. A water heater with anti-dripping function according to claim 5, characterized in that: The top of the auxiliary water tank (2) is provided with several through holes.

7. A water heater with anti-dripping function according to claim 6, characterized in that: The flexible water storage container is made of food-grade elastic plastic.

8. A water heater with anti-dripping function according to claim 1, characterized in that: The heating tank (1) includes an outer shell and an inner liner, wherein the outer wall of the inner liner is fitted with the inner wall of the outer shell.

9. A water heater with anti-dripping function according to claim 1, characterized in that: Heating system (4), the heating system (4) is installed at the bottom of the heating tank (1), The load of the heating system (4) is less than 15 W / cm. 2 ; Temperature control system (5), the temperature control system (5) is installed in the middle of the side wall of the heating tank (1); Temperature probe (6) is installed at the outlet of the heating tank (1).

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