Intelligent water dispenser capable of providing warm boiled water

Abstract

The utility model discloses an intelligent water dispenser capable of providing warm boiled water. The intelligent water dispenser comprises a heating water tank, a heat exchange device and a control device, a cold water inlet of the heat exchange device is connected with a water source through a first flow meter, a speed regulating pump and a water inlet electromagnetic valve in sequence, and a cold water outlet of the heat exchange device is connected with a water inlet of the heating water tank. A hot water outlet of the heat exchange device is connected with a first water outlet nozzle through a self-priming pump, a second flow meter and a first water outlet electromagnetic valve in sequence, and a second water temperature sensor is further arranged between the second flow meter and the first water outlet electromagnetic valve; the heating water tank is a stepping type heating water tank. The utility model provides an intelligent water drinking device capable of providing warm boiled water, which can ensure the safety of water quality, reduce the volume of equipment, reduce the cost and improve the water supply efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drinking water equipment technology, and more specifically to an intelligent drinking water device that provides warm boiled water. Background Technology

[0002] Currently, most commercially available warm and cold water supply systems employ either a pressurized water tank heating structure or a dual-tank heat exchange structure. However, both of these structures have technical drawbacks: the pressurized water tank heating structure uses a closed pressurized water tank to circulate and heat water to produce boiling water. Repeated boiling of the water can easily lead to "repeatedly boiled water," resulting in mineral concentration, poor taste, and potential health risks. Furthermore, the large capacity of the water tank results in bulky equipment and slow heating, making it difficult to meet peak water demand. The dual-tank heat exchange structure uses two independent tanks to produce hot and cold water respectively, then uses a heat exchanger for cooling. While this can address the "repeatedly boiled water" problem to some extent, the dual-tank heat exchange structure, refrigeration system, and complex piping system increase equipment costs and make maintenance difficult. Moreover, the dual-tank capacity limits the continuity of water supply, frequently causing interruptions in high-load water usage scenarios, making it unable to cope with sudden surges in water demand.

[0003] It is evident that existing warm and boiled water supply equipment generally suffers from problems such as: local water reheating leading to significant water quality safety risks; large-capacity water tanks or refrigeration systems resulting in large equipment size and high manufacturing costs; and poor adaptability to changes in water load leading to insufficient water supply continuity. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides an intelligent drinking water device that provides warm boiled water, which can ensure water quality safety, reduce equipment size, reduce costs and improve water supply efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an intelligent drinking water device that provides warm boiled water, including a heating water tank, a heat exchange device and a control device;

[0006] The cold water inlet of the heat exchange device is connected to the water source in sequence through a first flow meter, a speed regulating pump, and an inlet solenoid valve. The cold water outlet of the heat exchange device is connected to the inlet of the heating water tank. The outlet of the heating water tank is connected to the hot water inlet of the heat exchange device. The hot water outlet of the heat exchange device is connected to the first outlet in sequence through a self-priming pump, a second flow meter, and a first outlet solenoid valve. A second water temperature sensor is also provided between the second flow meter and the first outlet solenoid valve. The first outlet is used to output warm boiled water. The heating water tank is a step-type heating water tank. The control device is electrically connected to the heating water tank, the first flow meter, the speed regulating pump, the inlet solenoid valve, the self-priming pump, the second flow meter, the first outlet solenoid valve, and the second water temperature sensor.

[0007] In a preferred embodiment, a diversion solenoid valve is provided between the cold water outlet of the heat exchange device and the drain pipe. The diversion solenoid valve is used to discharge excess inlet water through the drain pipe. The diversion solenoid valve is electrically connected to the control device.

[0008] In a preferred embodiment, the heating water tank is equipped with a multi-stage water level sensor, a first temperature sensor, and a heating device; the multi-stage water level sensor includes a low water level sensor, a replenishment water level sensor, and a high water level sensor arranged sequentially from low to high, and the first temperature sensor and the heating device are both located below the low water level sensor; the low water level sensor, the replenishment water level sensor, the high water level sensor, the first temperature sensor, and the heating device are all electrically connected to the control device.

[0009] In a preferred embodiment, the aforementioned intelligent drinking water device further includes a pressure sensor, which is electrically connected to the control device.

[0010] In a preferred embodiment, the heat exchange device includes an inner tube and an outer tube, with the outer tube coaxially sleeved around the outside of the inner tube. The two ends of the inner tube are the hot water inlet and hot water outlet of the heat exchange device, respectively, and the two ends of the outer tube are the cold water inlet and cold water outlet of the heat exchange device, respectively. A first solenoid valve and a one-way valve are provided between the inlet of the heating water tank and the cold water outlet of the heat exchange device, and a second solenoid valve is provided between the outlet of the heating water tank and the hot water inlet of the heat exchange device. Both the first and second solenoid valves are electrically connected to the control device.

[0011] In a preferred embodiment, the outlet of the heating water tank is also connected to a second water outlet via a second water outlet solenoid valve; the second water outlet solenoid valve is electrically connected to the control device.

[0012] In a preferred embodiment, the bottom of the heating water tank is provided with a drain outlet, which is connected to a drain pipe via a drain valve, and the drain valve is electrically connected to a control device.

[0013] In a preferred embodiment, the inner cavity of the heating water tank is provided with an exhaust pipe, and the bottom of the heating water tank is provided with an exhaust port; the upper end of the exhaust pipe is located at the top of the inner cavity of the heating water tank, and the lower end of the exhaust pipe extends through the exhaust port to the outside of the heating water tank, and is connected to a drain pipe through an exhaust check valve.

[0014] In a preferred embodiment, a filter device is provided between the inlet solenoid valve and the water source.

[0015] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: An intelligent drinking water device that provides warm boiled water uses a step-type heating water tank, which can effectively prevent repeatedly boiled water and ensure water quality safety. Simultaneously, a counter-current heat exchange device preheats the incoming water and cools the hot water, enhancing energy efficiency and improving heating efficiency, allowing the heating water tank to boil water more quickly. The entire device uses a single step-type heating water tank and a counter-current heat exchange device, eliminating the need for two heating water tanks and a refrigeration system, resulting in a smaller drinking water device and reduced costs. Furthermore, the control device can adjust the incoming water flow rate via a speed-regulating pump according to the preset output water temperature, and can also adjust the heating power of the heating water tank, enabling the intelligent drinking water device to achieve a continuous water supply mode of simultaneous water replenishment, heating, and dispensing, improving water supply efficiency and meeting peak water demand.

[0016] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the water circuit structure of the intelligent drinking water device of this utility model;

[0019] Explanation of reference numerals in the attached drawings: 1. Heating water tank; 2. Heat exchange device; 11. First temperature sensor; 12. Heating device; 13. Inlet check valve; 14. Exhaust check valve; 15. Exhaust pipe; 31. Speed ​​regulating pump; 32. First flow meter; 33. Filter device; 41. Self-priming pump; 42. Second flow meter; 43. First outlet; 44. Second water temperature sensor; 61. Drain pipe; 71. Second outlet; K0. Inlet solenoid valve; K1. First solenoid valve; K2. Second solenoid valve; K3. Diverting solenoid valve; K4. First outlet solenoid valve; K5. Second outlet solenoid valve; K6. Drain valve; L1. Low water level sensor; L2. Make-up water level sensor; L3. High water level sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In one embodiment, such as Figure 1 As shown, an intelligent drinking water device that provides warm boiled water includes a heating water tank 1, a heat exchange device 2, and a control device.

[0023] The cold water inlet of the heat exchange device 2 is connected to the water source in sequence through the first flow meter 32, the speed regulating pump 31 and the inlet solenoid valve K0. The cold water outlet of the heat exchange device 2 is connected to the inlet of the heating water tank 1. The outlet of the heating water tank 1 is connected to the hot water inlet of the heat exchange device 2. The hot water outlet of the heat exchange device 2 is connected to the first outlet 43 in sequence through the self-priming pump 41, the second flow meter 42 and the first outlet solenoid valve K4. A second water temperature sensor 44 is also provided between the second flow meter 42 and the first outlet solenoid valve K4. The heating water tank 1 is a step-type heating water tank.

[0024] The control device is electrically connected to the heating water tank 1, the first flow meter 32, the speed regulating pump 31, the inlet solenoid valve K0, the self-priming pump 41, the second flow meter 42, the first outlet solenoid valve K4, and the second water temperature sensor 44.

[0025] The system includes a first water outlet 43 for dispensing warm boiled water at 40-60℃ (±2℃) for direct drinking; a second water temperature sensor 44 for detecting the outlet water temperature; a heating water tank 1 with a capacity of 10L or less, which helps to shorten heating time and boil water more quickly; a heat exchange device 2 that is a counter-current heat exchanger, which can simultaneously preheat the incoming water and cool the hot water, making it energy-efficient; a first flow meter 32 and a second flow meter 42 for detecting the incoming and outgoing water flow rates, respectively; and a speed-regulating pump 31 that can adjust the incoming water flow rate Q1 by changing its speed.

[0026] In practical implementation, the control device can obtain the inlet flow rate Q1 and outlet flow rate Q2 through the first flow meter 32 and the second flow meter 42, and control the speed regulating pump 31 to adjust the inlet flow rate Q1 according to the preset target outlet water temperature and real-time replenishment water temperature, so that the actual outlet water temperature matches the target outlet water temperature, and dynamically balance the inlet flow rate Q1 and outlet flow rate Q2 in real time to ensure that Q1=Q2+ΔQ, ΔQ≥0, thereby ensuring continuous water supply. For example, when the real-time replenishment water temperature remains unchanged, if the target outlet water temperature increases, the speed of the speed regulating pump 31 is reduced, and the inlet flow rate Q1 is reduced, so that the actual outlet water temperature rises to the target outlet water temperature; while if the target outlet water temperature decreases, the speed of the speed regulating pump 31 is increased, and the inlet flow rate Q1 is increased, so that the actual outlet water temperature drops to the target outlet water temperature; the real-time replenishment water temperature is the temperature of the water entering the heating water tank 1 after preheating by the heat exchange device 2.

[0027] The above embodiment provides an intelligent drinking water device that provides warm boiled water. It employs a step-type heating water tank, effectively preventing repeatedly boiled water and ensuring water quality safety. Simultaneously, a counter-current heat exchange device preheats the incoming water and cools the hot water, enhancing energy efficiency and improving heating efficiency, allowing the heating water tank to boil water more quickly. The entire device uses a single step-type heating water tank and a counter-current heat exchange device, eliminating the need for two heating water tanks and a refrigeration system, resulting in a smaller size and lower cost. Furthermore, the control device can adjust the incoming water flow rate via a speed-regulating pump according to the preset output water temperature, and can also adjust the heating power of the heating water tank. This enables the intelligent drinking water device to achieve a continuous water supply mode of replenishing, heating, and dispensing water simultaneously, improving water supply efficiency and meeting peak water demand.

[0028] The aforementioned smart drinking water device that provides warm water is suitable for concentrated water use during peak hours in densely populated places such as schools, hospitals, office buildings, and commercial complexes. It is particularly advantageous in scenarios with limited space, such as school classrooms, hospital wards, and small offices.

[0029] In this embodiment, a diversion solenoid valve K3 is provided between the cold water outlet of the heat exchange device 2 and the drain pipe 61. The diversion solenoid valve K3 is used to discharge excess inlet water through the drain pipe 61. The diversion solenoid valve K3 is electrically connected to the control device.

[0030] In practice, when ΔQ exceeds the preset flow difference threshold, the newly replenished water, preheated by the heat exchange device 2, is partially diverted through the diversion solenoid valve K3 and discharged directly through the drain pipe 61, while the other part enters the heating water tank 1, ensuring that the water level in the tank remains within the preset range. The preset flow difference threshold can be 5% to 10% of Q2, and the preset range for the water level in the tank can be set between the replenishment water level sensor L2 and the high water level sensor L3.

[0031] In the above embodiments, the intelligent drinking water device can discharge excess flow to prevent too much water from entering the heating water tank 1 and affecting the water level balance.

[0032] In this embodiment, the heating water tank 1 is equipped with a multi-level water level sensor, a first temperature sensor 11, and a heating device 12. The multi-level water level sensor includes a low water level sensor L1, a replenishment water level sensor L2, and a high water level sensor L3 arranged sequentially from low to high. The first temperature sensor 11 and the heating device 12 are both located below the low water level sensor L1. The low water level sensor L1, the replenishment water level sensor L2, the high water level sensor L3, the first temperature sensor 11, and the heating device 12 are all electrically connected to the control device.

[0033] The liquid level difference between the high water level sensor L3 and the replenishment water level sensor L2 can be 10–30 mm, preferably 20 mm. The power adjustable range of the heating device 12 can be 800–3000 W, preferably 1200–2000 W. The heating device 12 heats the bottom water of the heating water tank 1 until it boils. Due to the density difference of the water, a boiling water layer will naturally form in the upper layer. When the water is not completely boiled, the first outlet solenoid valve K4 remains closed to prevent raw water from flowing out and ensure that the boiling rate of the water reaches 100%. After the first boil, the control device can control the speed-regulating pump 31 to replenish water to the heating water tank 1 in multiple stages. Each time water is replenished to the water level corresponding to the low water level sensor L1, the new cold water pushes the boiling water layer to rise. When the water level reaches the water level corresponding to the high water level sensor L3, the multi-stage water replenishment ends. During the multi-stage water replenishment process, the heating device 12 only heats the cold water layer at the low water level of the heating water tank 1, thereby achieving high-efficiency heating.

[0034] In practice, the control device can dynamically adjust the power of the heating device 12 according to the target outlet water temperature and the real-time replenishment water temperature. The power adjustment range can be 0 to 100% of the rated working power to quickly heat the water to 100°C, thereby greatly shortening the heating time and ensuring the continuity of the supply of warm water.

[0035] In the above embodiments, the heating water tank 1 can achieve complete boiling of the bottom water through multi-level water level sensors and the heating device 12 located at the bottom, effectively preventing the phenomenon of repeatedly boiled water; at the same time, the control device can shorten the heating time and stabilize the outlet water temperature by adjusting the working power of the heating device 12, thereby ensuring a continuous supply of warm boiled water.

[0036] In this embodiment, the above-mentioned intelligent drinking water device also includes a pressure sensor, which is electrically connected to the control device.

[0037] The air pressure sensor can be installed inside the heating water tank 1. In practice, the control device adjusts the working power of the heating device 12 according to the air pressure value detected by the air pressure sensor to compensate for the impact of low air pressure on heating efficiency, so that the boiling time of the bottom water is less than or equal to the preset heating time.

[0038] In this embodiment, the heat exchange device 2 includes an inner tube and an outer tube, with the outer tube coaxially sleeved outside the inner tube; the two ends of the inner tube are the hot water inlet and hot water outlet of the heat exchange device 2, respectively, and the two ends of the outer tube are the cold water inlet and cold water outlet of the heat exchange device 2, respectively; a first solenoid valve K1 and a one-way valve 13 are provided between the inlet of the heating water tank 1 and the cold water outlet of the heat exchange device 2, and a second solenoid valve K2 is provided between the outlet of the heating water tank 1 and the hot water inlet of the heat exchange device 2; both the first solenoid valve K1 and the second solenoid valve K2 are electrically connected to the control device.

[0039] In this heat exchange device 2, the inner pipe flows with 100℃ boiling water, while the outer pipe flows with 20℃ cold water. Countercurrent heat exchange is achieved through heat conduction through the pipe walls. Taking a target outlet water temperature of 45℃ as an example, under ideal conditions with the same flow rate and no heat loss, the heat released by cooling 100℃ boiling water to 45℃ can preheat 20℃ cold water to 75℃, raising the inlet water temperature of the heating water tank by 55℃, resulting in an energy saving rate of over 65%. Furthermore, both the outer and inner pipes are closed systems, with cold and hot water flowing in their respective independent pipes, preventing the mixing of raw and boiling water. Combined with the dual treatment of boiling sterilization and physical cooling, this ensures that the output water temperature is a safe and hygienic warm boiled water.

[0040] In practice, the outer and inner tubes of the heat exchange device 2 can be made of stainless steel.

[0041] In the above embodiments, the heat exchange device 2 is a coaxial counter-current heat exchange structure, which uses the heat of hot water to heat the incoming cold water, thereby improving heat utilization efficiency and making it more energy-efficient.

[0042] In this embodiment, the outlet of the heating water tank 1 is also connected to a second water outlet 71 via a second water outlet solenoid valve K5; the second water outlet solenoid valve K5 is electrically connected to the control device.

[0043] The number of second water outlets 71 can be one or more.

[0044] In the above embodiments, the intelligent drinking water device can also output hot water through the second water outlet 71, providing both warm and hot water supply modes.

[0045] In this embodiment, the bottom of the heating water tank 1 is provided with a drain port, which is connected to the drain pipe 61 through a drain valve K6. The drain valve K6 is electrically connected to the control device. The drain port is used to drain the scale in the heating water tank 1, reduce scale accumulation, and ensure water quality.

[0046] In this embodiment, the inner cavity of the heating water tank 1 is provided with an exhaust pipe 15, and the bottom of the heating water tank 1 is provided with an exhaust port; the upper end of the exhaust pipe 15 is located at the top of the inner cavity of the heating water tank 1, and the lower end of the exhaust pipe 15 extends through the exhaust port to the outside of the heating water tank 1, and is connected to the drain pipe 61 through the exhaust one-way valve 14.

[0047] In practice, the air inside the heating water tank 1 can be discharged through the exhaust pipe 15, which can effectively regulate the pressure when adding or using water, balance the pressure difference between the inside and outside of the water tank, and prevent the water tank from deforming or being damaged due to pressure changes.

[0048] In this embodiment, a filter device 33 is provided between the water inlet solenoid valve K0 and the water source to filter the water source, improve the water quality of the incoming water, and prevent impurities from entering the pipeline of the smart drinking water device and causing blockage.

[0049] Other components and operations of the intelligent drinking water device for providing warm boiled water according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0052] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A smart drinking water device that provides warm boiled water, characterized in that: It includes a heating water tank (1), a heat exchange device (2), and a control device; The cold water inlet of the heat exchange device (2) is connected to the water source in sequence through a first flow meter (32), a speed regulating pump (31), and an inlet solenoid valve (K0). The cold water outlet of the heat exchange device (2) is connected to the inlet of the heating water tank (1). The outlet of the heating water tank (1) is connected to the hot water inlet of the heat exchange device (2). The hot water outlet of the heat exchange device (2) is connected to the first outlet nozzle (43) in sequence through a self-priming pump (41), a second flow meter (42), and a first outlet solenoid valve (K4). A second water temperature sensor (44) is also provided between the second flow meter (42) and the first outlet solenoid valve (K4). The heating water tank (1) is a step-type heating water tank. The control device is electrically connected to the heating water tank (1), the first flow meter (32), the speed regulating pump (31), the inlet solenoid valve (K0), the self-priming pump (41), the second flow meter (42), the first outlet solenoid valve (K4), and the second water temperature sensor (44).

2. The intelligent drinking water device for providing warm boiled water according to claim 1, characterized in that: A diversion solenoid valve (K3) is provided between the cold water outlet of the heat exchange device (2) and the drain pipe (61). The diversion solenoid valve (K3) is used to discharge excess inlet water through the drain pipe (61). The flow divider solenoid valve (K3) is electrically connected to the control device.

3. The intelligent drinking water device for providing warm boiled water according to claim 2, characterized in that: The heating water tank (1) is equipped with a multi-level water level sensor, a first temperature sensor (11) and a heating device (12); The multi-level water level sensor includes a low water level sensor (L1), a replenishment water level sensor (L2), and a high water level sensor (L3) arranged in order from low to high. The first temperature sensor (11) and the heating device (12) are both located below the low water level sensor (L1). The low water level sensor (L1), the replenishment water level sensor (L2), the high water level sensor (L3), the first temperature sensor (11), and the heating device (12) are all electrically connected to the control device.

4. The intelligent drinking water device for providing warm boiled water according to claim 3, characterized in that: It also includes a pressure sensor, which is electrically connected to the control device.

5. The intelligent drinking water device for providing warm boiled water according to claim 3, characterized in that: The heat exchange device (2) includes an inner tube and an outer tube, with the outer tube coaxially sleeved outside the inner tube; the two ends of the inner tube are the hot water inlet and hot water outlet of the heat exchange device (2), respectively, and the two ends of the outer tube are the cold water inlet and cold water outlet of the heat exchange device (2), respectively. A first solenoid valve (K1) and a one-way valve (13) are provided between the inlet of the heating water tank (1) and the cold water outlet of the heat exchange device (2), and a second solenoid valve (K2) is provided between the outlet of the heating water tank (1) and the hot water inlet of the heat exchange device (2). Both the first solenoid valve (K1) and the second solenoid valve (K2) are electrically connected to the control device.

6. The intelligent drinking water device for providing warm boiled water according to any one of claims 1 to 5, characterized in that: The outlet of the heating water tank (1) is also connected to a second water outlet (71) via a second water outlet solenoid valve (K5); the second water outlet solenoid valve (K5) is electrically connected to the control device.

7. The intelligent drinking water device for providing warm boiled water according to claim 3, characterized in that: The bottom of the heating water tank (1) is provided with a drain port, which is connected to the drain pipe (61) through a drain valve (K6). The drain valve (K6) is electrically connected to the control device.

8. The intelligent drinking water device for providing warm boiled water according to claim 3, characterized in that: The inner cavity of the heating water tank (1) is provided with an exhaust pipe (15), and the bottom of the heating water tank (1) is provided with an exhaust port; The upper end of the exhaust pipe (15) is located at the top of the inner cavity of the heating water tank (1), and the lower end of the exhaust pipe (15) extends through the exhaust port to the outside of the heating water tank (1) and is connected to the drain pipe (61) through the exhaust check valve (14).

9. The intelligent drinking water device for providing warm boiled water according to claim 1, characterized in that: A filter device (33) is provided between the water inlet solenoid valve (K0) and the water source.

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