Waterway system with hot water circulation function and water dispenser

Abstract

The utility model discloses a waterway system with a hot water circulation function, which comprises a water inlet structure, a water tank, a heating body, a water outlet structure and a water flow driving device used for guiding water in the water tank into the heating body, the water inlet structure is used for supplementing water to the water tank, and the downstream of the heating body is connected with a waterway reversing device. The waterway reversing device comprises a first water outlet end and a second water outlet end, the first water outlet end of the waterway reversing device is connected with the water outlet structure, and the second water outlet end of the waterway reversing device is connected with the water tank. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of high-temperature circulating sterilization, high waterway sterilization coverage rate and large hot water outlet flow.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water equipment, in particular to a water circuit system and a water dispenser with a hot water circulation function. Background Art

[0002] The existing Chinese patent with the publication number of CN 204541782U discloses an instant heating boiler heating element pipeline mechanism for a beverage machine. The mechanism includes a flow meter for controlling the suction volume of drinking water, a first connector connected to the flow meter, a pressure relief valve connected to the first connector for discharging pipeline air pressure, a water pump connected to the first connector for pumping and draining water, a second connector connected to the water pump, a heating element connected to the second connector for heating drinking water, a third connector connected to the heating element, a three-way solenoid valve connected to the third connector for controlling water outlet or drainage, and a water pipe for providing the flow of drinking water.

[0003] However, the above existing technology has the following disadvantages: The water circuit system uses a water tank to store raw water, but usually the water tank adopts a fully enclosed or semi-enclosed structure, resulting in the water tank being not easy to clean, and bacteria are likely to breed in the water tank after long-term use, which urgently needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a water circuit system and a water dispenser with a hot water circulation function, which have the effects of high-temperature cycle sterilization, high water circuit sterilization coverage rate, and large hot water flow rate.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A water circuit system with a hot water circulation function, the water circuit system includes a water inlet structure, a water tank, a heating element, a water outlet structure, and a water flow driving device for guiding the water in the water tank to the heating element. The water inlet structure is used to replenish water to the water tank. A water circuit reversing device is connected downstream of the heating element. The water circuit reversing device includes a first water outlet end and a second water outlet end. The first water outlet end of the water circuit reversing device is connected to the water outlet structure, and the second water outlet end of the water circuit reversing device is connected to the water tank.

[0006] By adopting the above technical solution, the water inlet structure is used to replenish water to the water tank. After the water tank is replenished with water, the water flow driving device pumps the raw water in the water tank into the heating body, heats it to a predetermined temperature, and returns it to the water tank through the second water outlet end of the water path switching device to form warm water. Then, the warm water in the water tank is pumped to the heating body by the water flow driving device again for secondary heating to form hot water at a higher temperature. This cycle continues until the hot water at the water outlet end of the heating body reaches the temperature standard of drinking boiling water. During the cycle, the high-temperature boiling water can be used to sterilize the entire water path system. When hot water needs to be taken, by opening the first water outlet end of the water path switching device, the hot water at the water outlet end of the heating body can flow into the water outlet structure through the water path switching device for taking hot water. When the water in the water tank is heated to the temperature of drinking hot water, the heating of the heating body is stopped. The hot water in the water tank gradually cools down through natural cooling. When the hot water in the water tank cools to the drinking temperature of cooled boiled water, the cooled boiled water can be taken. In addition, when warm water needs to be taken, the heating body is used to heat the hot water that has been boiled in the water tank or the cooled boiled water that has been naturally cooled to a hot water at a predetermined temperature for taking. By setting up the hot water reflux to achieve the way of cyclic sterilization, it can prevent the situation of active bacteria being mixed when taking warm water or cooled boiled water later. At the same time, different from the disadvantage of the small water flow of the existing instant hot water dispensers on the market, in the present utility model, the raw water is pre-boiled, and when taking warm water or hot water later, only the cooled boiled water or warm water that has been boiled in the water tank needs to be further heated and raised in temperature. This can effectively increase the water flow of the water outlet structure. And by arranging the water path switching device close to the water outlet structure downstream of the heating body, it can increase the overall travel of high-temperature sterilization, thereby increasing the high-temperature sterilization coverage rate of the entire water path system of the present utility model, having the effects of high-temperature cyclic sterilization, high water path sterilization coverage rate, and large hot water flow.

[0007] A further setting of the present utility model is that: the water path switching device is set as a reversing valve. The water inlet end of the reversing valve is connected to the water outlet end of the heating body. The first water outlet end of the reversing valve is connected to the water outlet structure. The second water outlet end of the reversing valve is connected to the water tank through a high-temperature circulation water path.

[0008] By adopting the above technical solution, the reversing valve is used to realize the conduction or closing of the high-temperature circulation water path and the water path of the water outlet structure. Different from the way of separately controlling by setting electromagnetic control valves on the high-temperature circulation water path and the water path of the water outlet structure on the market, the control method of setting the reversing valve in the present utility model occupies less space, making the structure of the present utility model more compact.

[0009] A further setting of the present utility model is that: the water outlet structure includes a water-vapor separator connected to the first outlet end of the water path switching device.

[0010] By adopting the above technical solution, the water vapor separator can separate water vapor from hot water, prevent hot water splashing caused by steam entrainment when discharging hot water, and improve the anti-scalding property when receiving hot water.

[0011] A further setting of the present utility model is that: the heating body is provided with an inlet water temperature sensor and / or an outlet water temperature sensor which are in control cooperation with the water path commutation device.

[0012] By adopting the above technical solution, the inlet water temperature sensor and the outlet water temperature sensor can respectively monitor the water temperatures at the inlet and outlet of the heating body. When it is detected that the water temperature in the heating body does not reach the predetermined temperature value, feedback control is used to make the heating body continue to heat the water source inside it, and the first water outlet end of the water path commutation device is controlled to close. At this time, the water source flowing out of the outlet of the heating body returns to the water tank through the second water outlet end of the water path commutation device to continue the heating cycle. When it is detected that the water temperature in the heating body reaches the boiling temperature, at this time, feedback control is used to open the first water outlet end of the water path commutation device, and the user can obtain hot water through the water outlet structure.

[0013] A further setting of the present utility model is that: the water flow driving device is a diaphragm pump, and a check valve is provided between the diaphragm pump and the heating body.

[0014] By adopting the above technical solution, the check valve only allows the water in the water tank to flow unidirectionally into the heating body, and can prevent the water flow in the heating body from flowing back into the water tank.

[0015] A further setting of the present utility model is that: the water tank is provided with a high water level switch and a low water level switch.

[0016] By adopting the above technical solution, the high water level switch and the low water level switch can be used to monitor the water level of the water tank in real time to judge whether water replenishment is needed or water replenishment should be stopped.

[0017] A further setting of the present utility model is that: the water tank is provided with a float switch, and the high water level switch is arranged between the float switch and the low water level switch.

[0018] By adopting the above technical solution, the float switch is arranged above the high water level switch. When the high water level switch fails and the water level in the water tank is too high during water replenishment, at this time, the float switch can be used to close the water replenishment of the water tank, achieving the purpose of mechanically blocking the water replenishment port to stop water replenishment.

[0019] A further setting of the present utility model is that: a drain pipe is connected between the water tank and the heating body.

[0020] By adopting the above technical solution, the drain pipe can drain all the residual water in the water tank and the heating body, preventing bacteria from breeding due to water accumulation in the water tank and the heating body when not in use for a long time.

[0021] A further setting of the present utility model is that: the high-temperature circulating water path adopts a heat-resistant food-grade connecting pipe.

[0022] By adopting the above technical solution, the connecting pipe made of heat-resistant food-grade material enables the high-temperature circulating water path of the present utility model to withstand the high-temperature hot water flowing back from the water path commutation device to the water tank, improving the safety of drinking water.

[0023] Another technical object of the present utility model is to provide a water dispenser, including a water path system with a hot water circulation function.

[0024] In summary, the present utility model has the following beneficial effects:

[0025] By arranging a water inlet structure, a water tank, a heating element, a water outlet structure and a water flow driving device in the water path system, a water path commutation device is connected downstream of the heating element, the first water outlet end of the water path commutation device is connected to the water outlet structure, the second water outlet end of the water path commutation device is connected to the water tank, the water inlet structure is used to replenish water to the water tank, the water flow driving device pumps the raw water in the water tank into the heating element to be heated to a predetermined temperature and returns to the water tank through the second water outlet end of the water path commutation device to form warm water, and then the warm water in the water tank is pumped to the heating element by the water flow driving device again for secondary heating to form hot water at a higher temperature, and so on in a cycle until the hot water at the water outlet end of the heating element reaches the temperature standard of drinking boiling water. During the cycle, the purpose of high-temperature sterilization of the entire water path system can be achieved by using high-temperature boiling water. In addition, when the raw water in the water tank is heated to the drinking hot water temperature multiple times, the heating element is controlled to start and stop to obtain cooled boiled water, warm water or hot water. And the water path commutation device is arranged close to the water outlet structure downstream of the heating element, increasing the high-temperature sterilization coverage rate of the entire water path system of the present utility model, having the effects of high-temperature circulating sterilization, high water path sterilization coverage rate and large hot water flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the water path connection diagram of the present utility model.

[0027] In the figure: 1, water inlet structure; 11, water inlet pipeline; 12, solenoid valve; 2, water tank; 21, high water level switch; 22, low water level switch; 23, float switch; 24, ventilation port; 3, heating element; 31, water inlet temperature sensor; 32, water outlet temperature sensor; 4, water outlet structure; 40, water outlet pipeline; 41, steam-water separator; 5, water flow driving device; 51, check valve; 6, water path commutation device; 7, high-temperature circulating water path; 8, drainage pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will be further described below with reference to the accompanying drawings.

[0029] A waterway system with a hot water circulation function, as Figure 1 shown. The waterway system includes a water inlet structure 1, a water tank 2, a heating element 3, a water outlet structure 4, and a water flow driving device 5 for guiding the water in the water tank 2 into the heating element 3. The water inlet structure 1 includes a water inlet pipeline 11 and a solenoid valve 12. The water inlet structure 1 is used to replenish water to the water tank 2. The water tank 2 is provided with a ventilation port 24. A waterway reversing device 6 is connected downstream of the heating element 3. The waterway reversing device 6 includes a first water outlet end and a second water outlet end. The first water outlet end of the waterway reversing device 6 is connected to the water outlet structure 4, and the second water outlet end of the waterway reversing device 6 is connected to the water tank 2; the waterway reversing device 6 is set as a reversing valve. The water inlet end of the reversing valve is connected to the water outlet end of the heating element 3. The first water outlet end of the reversing valve is connected to the water outlet structure 4. The second water outlet end of the reversing valve is connected to the water tank 2 through a high-temperature circulation waterway 7. The reversing valve is used to realize the conduction or closing of the high-temperature circulation waterway 7 and the waterway of the water outlet structure 4. Different from the way of separately controlling by setting electromagnetic control valves on the high-temperature circulation waterway 7 and the waterway of the water outlet structure 4 in the market, the control method of setting the reversing valve in the present utility model occupies less space, making the structure of the present utility model more compact. It should be noted that the reversing valve of the present utility model is arranged close to the water vapor separator 41 to increase the travel of the high-temperature circulation pipeline, so that high-temperature sterilization can more comprehensively cover the entire waterway system; in this embodiment, all pipelines of the waterway system except the water inlet pipeline 11 are made of high-temperature resistant food-grade connecting pipes. The high-temperature resistant food-grade connecting pipes can make the waterway system of the present utility model withstand high temperatures and improve the safety of drinking water at the same time.

[0030] As Figure 1As shown, the water outlet structure 4 includes a water outlet pipeline 40 connected to the first outlet end of the water path reversing device 6, and a water-vapor separator 41 connected to the water outlet end of the water outlet pipeline 40. The water-vapor separator 41 can separate water and vapor from the hot water, preventing steam from being carried when discharging hot water and avoiding hot water splashing, thus improving the anti-scalding property when receiving hot water. The heating element 3 is provided with an inlet water temperature sensor 31 and an outlet water temperature sensor 32 that are cooperatively controlled with the water path reversing device 6. The inlet water temperature sensor 31 and the outlet water temperature sensor 32 can respectively monitor the water temperatures at the inlet and outlet of the heating element 3. When the inlet water temperature sensor 31 detects that the water temperature at the inlet of the heating element 3 does not reach the predetermined temperature value, it feeds back to control the heating element 3 to continue heating the water source inside it, and controls the first outlet end of the water path reversing device 6 to close. At this time, the water flowing out from the outlet of the heating element 3 returns to the water tank 2 through the second outlet end of the water path reversing device 6 to continue the heating cycle. When the outlet water temperature sensor 32 detects that the water temperature at the outlet of the heating element 3 reaches the boiling temperature, it feeds back to control the first outlet end of the water path reversing device 6 to open, and the user can obtain hot water through the water outlet structure 4. The water flow driving device 5 is set as a diaphragm pump, and a check valve 51 is provided between the diaphragm pump and the heating element 3. The check valve 51 only allows the water in the water tank 2 to flow unidirectionally into the heating element 3, which can prevent the water flow in the heating element 3 from flowing back into the water tank 2. It also includes a control unit. The inlet water temperature sensor 31, the outlet water temperature sensor 32, the heating element 3, and the reversing valve are respectively electrically connected to the control unit. The control unit is used to feedback control the start and stop of the heating of the heating element 3 and the opening or closing of the first outlet end and the second outlet end of the reversing valve.

[0031] As Figure 1 shown, the water tank 2 is provided with a high water level switch 21 and a low water level switch 22. The high water level switch 21 and the low water level switch 22 can be used to monitor the water level of the water tank 2 in real time to determine whether to replenish water or stop replenishing water. The water tank 2 is provided with a float switch 23. The high water level switch 21 is arranged between the float switch 23 and the low water level switch 22, and the float switch 23 is arranged above the high water level switch 21. When the high water level switch 21 fails and the water level in the water tank 2 is too high during water replenishment, the float switch 23 can be used to close the water replenishment of the water tank 2 at this time, achieving the purpose of mechanically blocking the water replenishment port to stop water replenishment. The water tank 2 and the heating element 3 are connected with a drainage pipeline 8. The drainage pipeline 8 can drain all the residual water in the water tank 2 and the heating element 3, preventing bacteria from breeding due to water accumulation in the water tank 2 and the heating element 3 when not in use for a long time.

[0032] The basic working principle of the present utility model is as follows: In the water circuit system, there are provided a water inlet structure 1, a water tank 2, a heating element 3, a water outlet structure 4, and a water flow driving device 5. A path reversing device is connected downstream of the heating element 3. The first water outlet end of the water path reversing device 6 is connected to the water outlet structure 4, and the second water outlet end of the water path reversing device 6 is connected to the water tank 2. The water inlet structure 1 is used to replenish water to the water tank 2. After the water tank 2 is replenished with water, the water flow driving device 5 pumps the raw water in the water tank 2 into the heating element 3 to be heated to a predetermined temperature and returns it to the water tank 2 through the second water outlet end of the water path reversing device 6 to form warm water. Then, the warm water in the water tank 2 is pumped by the water flow driving device 5 to the heating element 3 again for secondary heating to form hot water at a higher temperature. This cycle continues until the hot water at the water outlet end of the heating element 3 reaches the temperature standard of drinking boiling water. During the cycle, the purpose of high-temperature cycle sterilization of the entire water circuit system can be achieved by using high-temperature boiling water. At the same time, during the above high-temperature hot water cycle, the water inlet temperature sensor 31 and the water outlet temperature sensor 32 can respectively monitor the water temperatures at the water inlet and water outlet of the heating element 3. When the water inlet temperature sensor 31 detects that the water temperature at the water inlet of the heating element 3 does not reach the predetermined temperature value, it feeds back to control the heating element 3 to continue heating the water source inside it, and controls the first water outlet end of the water path reversing device 6 to close. At this time, the water source flowing out of the water outlet of the heating element 3 flows back to the water tank 2 through the second water outlet end of the water path reversing device 6 to continue the heating cycle. When the water outlet temperature sensor 32 detects that the water temperature at the water outlet of the heating element 3 reaches the boiling temperature, at this time, it feeds back to control the first water outlet end of the water path reversing device 6 to open, and the user can obtain hot water through the water outlet structure 4; when hot water needs to be obtained, by opening the first water outlet end of the water path reversing device 6, the hot water at the water outlet end of the heating element 3 can flow into the water outlet structure 4 through the water path reversing device 6 for obtaining hot water. When the water in the water tank 2 is heated to the drinking hot water temperature, the heating of the heating element 3 is stopped. The hot water in the water tank 2 gradually cools down through natural cooling. When the hot water in the water tank 2 cools down to the drinking temperature of cooled boiled water, the cooled boiled water can be obtained. In addition, when warm water needs to be obtained, the heating element 3 is used to heat the hot water that has been boiled in the water tank 2 or the cooled boiled water that has been naturally cooled to a hot water at a predetermined temperature for obtaining. By setting the hot water to flow back to achieve the method of cycle sterilization, it can prevent the situation of active bacteria being mixed when subsequently obtaining warm water or cooled boiled water. At the same time, different from the disadvantage of the small water flow of the existing instant hot water dispensers on the market, the present utility model pre-boils the raw water in advance. When subsequently obtaining warm water or hot water, only the cooled boiled water or warm water that has been boiled in the water tank 2 needs to be further heated and raised to the required temperature, which can effectively increase the water flow rate of the water outlet structure 4. And by arranging the water path reversing device 6 close to the water outlet structure 4 downstream of the heating element 3, the overall stroke of high-temperature sterilization can be increased, thereby increasing the high-temperature sterilization coverage rate of the entire water circuit system of the present utility model, and having the effects of high-temperature cycle sterilization, high water path sterilization coverage rate, and large hot water flow rate.

[0033] The above are only the preferred embodiments of the present utility model. Therefore, all equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.

Claims

1. A water system with a hot water circulation function, the water system comprising a water inlet structure (1), a water tank (2), a heating body (3), a water outlet structure (4), and a water flow driving device (5) for introducing water in the water tank (2) into the heating body (3), the water inlet structure (1) being used to replenish water in the water tank (2), characterized in that: A water channel reversing device (6) is connected downstream of the heating body (3), and the water channel reversing device (6) comprises a first water outlet end and a second water outlet end, the first water outlet end of the water channel reversing device (6) is connected to the water outlet structure (4), and the second water outlet end of the water channel reversing device (6) is connected to the water tank (2).

2. A water system with hot water circulation function according to claim 1, characterized in that: The water circuit reversing device (6) is configured as a reversing valve, the water inlet end of the reversing valve is connected to the water outlet end of the heating body (3), the first water outlet end of the reversing valve is connected to the water outlet structure (4), and the second water outlet end of the reversing valve is connected to the water tank (2) via a high-temperature circulating water circuit (7).

3. A water system with hot water circulation function according to claim 1, characterized in that: The water outlet structure (4) comprises a water vapor separator (41) connected to the first outlet end of the water channel reversing device (6).

4. The water system with hot water circulation function according to claim 1, characterized in that: The heating body (3) is provided with a water inlet temperature sensor (31) and / or a water outlet temperature sensor (32) which are controlled and coordinated with the water channel reversing device (6).

5. The water system with hot water circulation function according to claim 1, characterized in that: The water flow driving device (5) is configured as a diaphragm pump, and a one-way valve (51) is provided between the diaphragm pump and the heating body (3).

6. The water system with hot water circulation function according to claim 1, characterized in that: The water tank (2) is provided with a high water level switch (21) and a low water level switch (22).

7. A water system with hot water circulation function according to claim 6, characterized in that: The water tank (2) is provided with a float switch (23), and the high water level switch (21) is arranged between the float switch (23) and the low water level switch (22).

8. The water system with hot water circulation function according to claim 1, characterized in that: The water tank (2) and the heating body (3) are connected with a drainage pipeline (8).

9. The water system with hot water circulation function according to claim 2, characterized in that: The high temperature circulating water circuit (7) adopts high temperature resistant food grade connecting pipe.

10. A water dispenser, characterized in that: A water system with hot water circulation function as claimed in any one of claims 1 to 9.

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