Hot tank assembly and water drinking equipment

Abstract

The utility model discloses a hot tank assembly and drinking water equipment, the hot tank assembly comprises a water storage unit, a heating unit, a pumping unit, a water outlet unit and a flow monitoring unit, the water storage unit is provided with a water storage space, the heating unit is used for heating water in the water storage space, an inlet of the pumping unit is communicated with the water storage space, and an outlet of the pumping unit is communicated with the water outlet unit. A water return pipe is arranged between an outlet of the pumping unit and the water storage space, a water outlet pipe is arranged between the outlet of the pumping unit and the water outlet unit, the flow area of the water outlet pipe is larger than that of the water return pipe, and the flow monitoring unit is arranged between the pumping unit and the water outlet unit and used for monitoring the flow pumped by the pumping unit to the water outlet unit. According to the hot tank assembly provided by the embodiment of the utility model, the outlet of the pumping unit is communicated with the water storage space to form the water return flow path, air blockage is improved, and water outlet efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a hot tank component and drinking water equipment. Background Art

[0002] With the continuous improvement of people's living standards and increasing demands for health, the water purifier market has shown rapid growth in recent years. The technology has evolved from the earliest small-flow capacity of 50G to the current maximum of 2000G, and ordinary water purifiers have become very mature. There are currently two main mainstream technologies for under-sink water purifiers with both water and heat. One is water-driven water discharge, where the hot water tank is always full of water, and the water inside the hot water tank is driven out by the water pressure at the water inlet. The other technical solution is hollow-tank water extraction, which heats the water inside the hot water tank to boiling and then uses a water pump to pump the water out for people to drink.

[0003] Commonly used water pumps have no suction range and rely on the centrifugal force generated by the high-speed rotation of the vane pump motor to throw the water out. However, because the boiling water in the hot tank contains a large number of bubbles, and the boiling point of the water will decrease when the vane pump rotates at high speed, a large number of bubbles will be generated on the surface of the vane pump motor. In addition, the hot water pipeline at the rear end of the pump is long, and there will be a reduction in pipe diameter and bends in the pipeline, which will increase the flow resistance of water in the pipeline, resulting in the hot water not being able to flow out or the flow rate being significantly reduced (commonly known as air blockage). Utility Model Content

[0004] One purpose of the utility model is to provide a hot pot assembly and a drinking water device.

[0005] According to the hot tank assembly of the embodiment of the present invention, it includes a water storage unit, a heating unit, a pumping unit, a water outlet unit and a flow monitoring unit. The water storage unit has a water storage space. The heating unit is used to heat the water in the water storage space. The inlet of the pumping unit is connected to the water storage space. A return pipe is provided between the outlet of the pumping unit and the water storage space. A water outlet pipe is provided between the outlet of the pumping unit and the water outlet unit. The flow area of ​​the water outlet pipe is larger than the flow area of ​​the return pipe. The flow monitoring unit is provided between the pumping unit and the water outlet unit for monitoring the flow pumped by the pumping unit to the water outlet unit.

[0006] According to the hot tank assembly of the embodiment of the present invention, the outlet of the pumping unit is connected to the water storage space to form a return water flow path, thereby improving air blockage and improving water output efficiency.

[0007] In addition, the hot pot assembly according to the above embodiment of the utility model may also have the following additional technical features:

[0008] In some embodiments, an air outlet is provided at the top of the water storage unit; and / or, the water storage unit includes an inner shell and an outer shell, the water storage space is provided on the inner side of the inner shell, the outer shell is provided on the outer side of the inner shell, and a vacuum cavity is provided between the inner shell and the outer shell or is filled with an insulating medium.

[0009] In some embodiments, the inner diameter of the outlet pipe is larger than the inner diameter of the return pipe; and / or the flow area of ​​the return pipe inlet end is larger than the flow area of ​​the outlet end; and / or the inner diameter of the return pipe inlet end is larger than the inner diameter of the return pipe outlet end.

[0010] In some embodiments, the return water pipe includes a first pipe portion and a second pipe portion, the first pipe portion extends in the up and down directions, the lower end of the first pipe portion is connected to the outlet of the pumping unit, the second pipe portion is arranged above the water storage unit, one end of the second pipe portion is connected to the upper end of the first pipe portion, and the other end is connected to the top wall of the water storage unit.

[0011] In some embodiments, the flow area of ​​the first tube portion is greater than the flow area of ​​the second tube portion; or the inner diameter of the first tube portion is smaller than the inner diameter of the second tube portion.

[0012] In some embodiments, the water storage unit further includes a second mounting tube, the top wall of the water storage unit is provided with a second opening, the periphery of the lower end of the second mounting tube is connected to the periphery of the second opening, and the return water pipe includes a first return water joint, which is socketed with the second mounting tube.

[0013] In some embodiments, the water outlet pipe includes a third pipe portion and a fourth pipe portion, the third pipe portion extends in the up and down directions, the lower end of the third pipe portion is connected to the outlet of the pumping unit, and the fourth pipe portion is arranged above the water storage unit, one end of the fourth pipe portion is connected to the upper end of the third pipe portion, and the other end is connected to the water outlet unit.

[0014] In some embodiments, the hot tank assembly further includes a common pipe, which is connected to the outlet of the pumping unit, one end of the return pipe is connected to the common pipe and the other end is connected to the water storage space, and one end of the outlet pipe is connected to the common pipe and the other end is connected to the water outlet unit.

[0015] In some embodiments, the common pipe includes a first pipe section and a second pipe section, one end of the first pipe section is connected to the outlet of the pumping unit, and the other end of the first pipe section is connected to and connected to the second pipe section; the second pipe section extends in a direction surrounding the water storage unit, and the second pipe section is provided with a first interface and a second interface distributed in a direction surrounding the water storage unit, the return pipe is connected to the first interface, and the outlet pipe is connected to the second interface.

[0016] In some embodiments, the second interface is closer to the outlet of the pumping unit than the first interface.

[0017] In some embodiments, the common pipe further includes a first sleeve, the first sleeve is connected to the second pipe section and connected to the first interface, and the return pipe is sleeved with the first sleeve; the common pipe further includes a second sleeve, the second sleeve is connected to the second pipe section and connected to the second interface, and the outlet pipe is sleeved with the second sleeve, and the inner diameter of the first sleeve is smaller than the inner diameter of the second sleeve.

[0018] In some embodiments, the first sleeve extends in the up-down direction, the second sleeve extends in the up-down direction, and the first sleeve and the second sleeve are distributed in a direction surrounding the water storage unit; and / or, the second sleeve is closer to the first pipe section than the first sleeve, the first sleeve is connected to the second pipe section by a bend, and the second pipe section is connected to the first pipe section by a bend.

[0019] In some embodiments, the water storage space includes a water storage cavity and an air cavity that are interconnected, the air cavity is arranged above the water storage cavity, the inlet of the pumping unit is connected to the water storage cavity, and the outlet of the pumping unit is connected to the air cavity.

[0020] In some embodiments, the hot tank assembly further includes a liquid level monitoring unit, which is configured to monitor a maximum water level in the water storage space to construct the air cavity above the water storage unit.

[0021] In some embodiments, the hot tank assembly further comprises a mounting seat, and the water storage unit and the pumping unit are arranged side by side on the mounting seat; and / or, the pumping unit is a centrifugal pump.

[0022] The drinking water equipment according to the embodiment of the present invention includes: the hot pot assembly according to the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of a hot pot assembly according to an embodiment of the present invention.

[0024] Figure 2 It is a front view of a hot pot assembly according to an embodiment of the present invention.

[0025] Figure 3 It is a cross-sectional view of a hot pot assembly according to an embodiment of the present invention.

[0026] Figure 4 It is a cross-sectional view of a hot pot assembly according to an embodiment of the present invention.

[0027] Figure 5It is a cross-sectional view of a hot pot assembly according to an embodiment of the present invention.

[0028] Figure 6 It is a cross-sectional view of a hot pot assembly according to an embodiment of the present invention.

[0029] Figure numerals: hot tank assembly 100, water storage unit 10, water storage space 101, water storage cavity 1011, air cavity 1012, first mounting pipe 11, second mounting pipe 12, air outlet 104, heating unit 20, pumping unit 30, water outlet unit 40, liquid level monitoring unit 50, first electrode 51, second electrode 52, water inlet pipe 61, first water inlet joint 611, second water inlet joint 612, connecting pipe 613, return water pipe 62, first return water joint 621, second return water joint 622, first pipe portion 623, second pipe portion 624, water outlet pipe 63, third pipe portion 631, fourth pipe portion 632, common pipe 64, first pipe section 641, second pipe section 642, first sleeve 643, second sleeve 644, mounting seat 70, flow monitoring unit 80. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1 to 3 According to an embodiment of the present invention, the hot pot assembly 100 includes a water storage unit 10, a heating unit 20, a pumping unit 30, and a water outlet unit 40. The water storage unit 10 may be a water storage container or a water tank, etc., and may have a water storage space 101. The heating unit 20 is used to heat the water in the water storage space 101. The heating unit 20 may be a heating pipe, electromagnetic heating, heat pump heating, etc. The inlet of the pumping unit 30 is connected to the water storage space 101, and the outlet is connected to the water storage space 101 and the water outlet unit 40. The pumping unit 30 drives the water in the water storage space 101 to flow toward the water outlet unit 40 and the water storage space 101. The pumping unit 30 may be a water pump, such as a vane water pump, a centrifugal water pump, or a water suction water pump.

[0032] During use, water is supplied from a water source to the water storage space 101. The water stored in the water storage space 101 can be heated by the heating unit 20. When the water temperature in the heated water storage space 101 reaches a predetermined temperature, the heating is stopped. When water is needed, the pumping unit 30 can drive the water flow, wherein the first water flow is pumped from the water storage space 101 to the water outlet unit 40. The water outlet unit 40 can be a water valve, a faucet, etc., which has provided treated water; wherein the second water flow can be pumped from the water storage space 101 to the water storage space 101, forming a backflow. By setting the second water flow, the flow resistance of the pumping unit 30 when pumping water can be reduced, so that the pumping unit 30 can pump water stably, reduce the resistance during the water flow, avoid air blockage, avoid problems such as slow water output and intermittent water output, and facilitate water supply by the water outlet unit 40.

[0033] According to the hot tank assembly 100 of the embodiment of the present invention, stable water output from the water outlet unit 40 can be achieved, air blockage can be avoided during the pumping process of the pumping unit 30, the noise during the operation of the hot tank assembly 100 can be effectively reduced, the water output volume and water output efficiency of the water outlet unit 40 can be increased, and the use of the hot tank assembly 100 is facilitated.

[0034] The water storage unit 10 of the present invention can include an inner shell and an outer shell. The water storage space 101 is provided within the inner shell, and the outer shell is provided outside the inner shell. An air layer, a vacuum layer, or a thermal insulation medium can be provided between the outer shell and the inner shell, thereby improving the thermal insulation capacity of the water storage unit 10 and achieving energy conservation and environmental protection. In addition, the water storage unit 10 comprises a shell portion, an upper cover portion, and a lower cover portion. The shell portion includes the aforementioned inner shell and outer shell. The upper cover portion covers the upper end of the shell portion and forms the top wall of the water storage unit 10. The lower cover portion covers the lower end of the shell portion and forms the bottom wall of the water storage unit 10.

[0035] The water storage space 101 in the present invention can be set to be filled with water. In addition, during the heating process of the water in the water storage space 101, steam will be generated, causing the air pressure in the water storage space 101 to increase. For this reason, in the present invention, the water storage capacity of the water storage space 101 can be set to be smaller than the volume of the water storage space 101 to facilitate the heating of the water in the water storage space 101.

[0036] like Figure 3In some embodiments, the water storage space 101 includes a water storage chamber 1011 and an air chamber 1012. The water storage chamber 1011 and the air chamber 1012 are interconnected, and the air chamber 1012 is located above the water storage chamber 1011. The inlet of the pumping unit 30 is connected to the water storage chamber 1011, and the outlet of the pumping unit 30 is connected to the air chamber 1012. During the water return process, the pumping unit 30 can pump water out of the water storage chamber 1011 and send it to the air chamber 1012. The water entering the air chamber 1012 will flow back into the water storage chamber 1011. This can facilitate the pumping assembly to pump water from the water storage chamber 1011 back to the water storage space 101, improve the energy efficiency of the pumping unit 30, and prevent the water in the water storage space 101 from flowing back along the return flow path. This improves the stability, pumping efficiency, and energy efficiency of the hot tank assembly 100, and also reduces the noise during operation of the hot tank assembly 100.

[0037] Alternatively, as Figure 1 and Figure 2 The hot tank assembly 100 further includes a liquid level monitoring unit 50, which is used to detect the highest water level in the water storage space 101, thereby forming an air cavity 1012 in the upper portion of the water storage unit 10. The liquid level monitoring unit 50 can detect the water level in the water space to prevent the water level in the water storage space 101 from being too high, thereby facilitating the heating of the water in the water storage unit 10. In addition, the liquid level monitoring unit 50 can also prevent overflow caused by excessive water in the water storage space 101, thereby improving the stability and safety of the hot tank assembly 100. The water storage unit 10 may further include a water inlet and a water valve connected to the water inlet. The combination of the water valve and the liquid level monitoring unit 50 can achieve quantitative water delivery into the water storage container.

[0038] The water level monitoring unit may include a first electrode 51 and a second electrode 52, which cooperate to detect the water level in the water storage unit 10. For example, when the detection ends of the first electrode 51 and the second electrode 52 are submerged in water, the power-on state, current, voltage, resistance, or capacitance between the first electrode 51 and the second electrode 52 will change, thereby detecting the water level in the water storage space 101. The water level detected by the first electrode 51 and the second electrode 52 is the highest water level in the water storage unit 10, with the air cavity 1012 above the highest water level and the water cavity 1011 below. Of course, the water level monitoring unit in the present invention may also be in other forms, such as a float-type water level monitoring unit.

[0039] like Figure 1 and Figure 2In conjunction with the above, a return flow path is provided between the outlet of the pumping unit 30 and the water storage space 101, and a water outlet flow path is provided between the outlet of the pumping unit 30 and the water outlet unit 40. The return flow path allows the water pumped from the water storage space 101 to flow back to avoid air lock. In addition, the water outlet flow path facilitates the pumping unit 30 to deliver water from the water storage space 101 to the water outlet unit 40.

[0040] Optionally, the length of the return flow path is shorter than the length of the outlet flow path. Optionally, after the water exits the pumping unit 30, there will be a return flow path and an outlet flow path. The return pipe can be connected to the top wall of the water storage unit 10 and communicate with the interior of the water storage unit 10; the outlet flow path is connected to the water outlet unit 40 of the entire machine, and the outlet flow path is long, for example, about 1.5 meters long. Because the return flow path is short and the head is small, the water resistance is small. Water can flow back from the return pipe to the interior of the water storage unit 10 under the action of the pumping unit 30 (the upper part of the water storage unit 10 has an air cavity 1012, and the water storage space 101 is not full of water). The power of the pumping unit 30 can be set to be relatively high, for example, about 16W to 18W. The water flow rate is relatively high, and excess water flows out of the water outlet unit 40 until the water outlet unit 40 flows out and the user can get hot water. The pumping unit 30 in the present invention can be a centrifugal pump. Centrifugal pumps do not have a self-priming function. The greater the head, the smaller the water resistance. After repeated testing and verification, if there is no return line, severe air blockage will occur during the initial water discharge, resulting in no water, slow water discharge, or intermittent water discharge. After adopting the return water flow path in the present invention, the air blockage phenomenon basically no longer occurs.

[0041] like Figure 1 and Figure 2 In some embodiments, the hot tank assembly 100 further includes a water inlet pipe 61, one end of which is connected to the inlet of the pumping unit 30, and the other end of which is connected to the water storage space 101. The water inlet pipe 61 can be used to connect the pumping unit 30 to the water storage unit 10, thereby pumping out the water in the water storage unit 10. This can avoid restrictions on the location of the pumping unit 30, improve the stability and safety of the hot tank assembly 100, and facilitate the assembly and maintenance of the hot tank assembly 100.

[0042] Optionally, the other end of the water inlet pipe 61 can be connected to the bottom wall of the water storage unit 10. This facilitates the connection of the water inlet pipe 61 to the water storage unit 10 and facilitates pumping out the water in the water storage unit 10.

[0043] like Figure 5In some embodiments, the water storage unit 10 includes a first mounting tube 11. The bottom wall of the water storage unit 10 is provided with a first opening. The upper periphery of the first mounting tube 11 is connected to the periphery of the first opening. The water inlet pipe 61 includes a first water inlet connector 611, which is sleeved and mated with the first mounting tube 11. This facilitates the connection between the water storage unit 10 and the water inlet pipe 61, improves the stability of the connection between the water inlet pipe 61 and the water storage unit 10, and facilitates the sealing of the connection structure between the water inlet pipe 61 and the water storage unit 10.

[0044] Furthermore, if Figure 2 and Figure 5 The water inlet pipe 61 includes a first water inlet connector 611, a second water inlet connector 612, and a connecting pipe 613. The first water inlet connector 611 is connected to the bottom wall of the water storage unit 10, and the second water inlet connector 612 is connected to the inlet of the pumping unit 30. The second water inlet connector 612 is located on the side of the bottom of the water storage unit 10. The connecting pipe 613 is connected to the first water inlet connector 611 and the second water inlet connector 612 at both ends, and is configured to extend from the first water inlet connector 611 to the second water inlet connector 612. This can shorten the length of the connecting pipe 613 and reduce the resistance of the connecting pipe 613, thereby improving the pumping efficiency of the pumping unit 30.

[0045] like Figure 1 and Figure 2 In some embodiments, the hot tank assembly 100 further includes a return pipe 62, one end of which is connected to the outlet of the pumping unit 30, and the other end of which is connected to the water storage space 101. The return pipe 62 can be used to guide the water pumped by the pumping unit 30 to the water storage space 101, thereby facilitating the assembly of the pumping unit 30 and the water storage unit 10, avoiding restrictions on the location of the pumping unit 30, improving the stability and safety of the hot tank assembly 100, and facilitating the assembly and maintenance of the hot tank assembly 100.

[0046] Optionally, the other end of the return pipe 62 is connected to the top wall of the water storage unit 10 , which facilitates the connection between the return pipe 62 and the water storage unit 10 and facilitates the return of water pumped by the pumping unit 30 to the water storage space 101 .

[0047] Among them, such as Figure 1 and Figure 6 The water storage unit 10 may further include a second mounting tube 12. The top wall of the water storage unit 10 is provided with a second opening. The lower periphery of the second mounting tube 12 is connected to the periphery of the second opening. The return pipe 62 includes a first return joint 621. The first return joint 621 is sleeved and mated with the second mounting tube 12. This facilitates the connection between the water storage unit 10 and the return pipe 62, improves the stability of the connection between the return pipe 62 and the water storage unit 10, and facilitates the sealing of the connection structure between the return pipe 62 and the water storage unit 10.

[0048] In addition, the return water pipe 62 further includes a second return water joint 622, which can be arranged to communicate with the outlet of the pumping unit 30. The first return water joint 621 and the second return water joint 622 are connected by a pipeline.

[0049] The return pipe 62 includes a first pipe portion 623 and a second pipe portion 624. The first pipe portion 623 extends vertically, with its lower end connected to the outlet of the pumping unit 30. The second pipe portion 624 is positioned above the water storage unit 10, with one end connected to the upper end of the first pipe portion 623 and the other end connected to the water storage space 101. This reduces the water resistance of the return pipe 62, further improving the pumping efficiency of the pumping unit 30. It also simplifies the structure of the hot tank assembly 100, facilitating assembly and maintenance.

[0050] like Figure 1 and Figure 2 In some embodiments, the hot tank assembly 100 further includes a water outlet pipe 63, one end of which is connected to the outlet of the pumping unit 30 and the other end of which is connected to the water outlet unit 40. The water outlet pipe 63 can be used to connect the pumping unit 30 and the water outlet unit 40 to pump water out of the water storage unit 10, thereby avoiding restrictions on the location of the pumping unit 30, improving the stability and safety of the hot tank assembly 100, and facilitating the assembly and maintenance of the hot tank assembly 100.

[0051] The water outlet pipe 63 includes a third pipe portion 631 and a fourth pipe portion 632. The third pipe portion 631 extends vertically, with its lower end connected to the outlet of the pumping unit 30. The fourth pipe portion 632 is positioned above the water storage unit 10. One end of the fourth pipe portion 632 is connected to the upper end of the third pipe portion 631, and the other end is connected to the water outlet unit 40. This reduces the water resistance of the water outlet pipe 63, further improving the pumping efficiency of the pumping unit 30. It also simplifies the structure of the hot tank assembly 100, facilitating assembly and maintenance of the hot tank assembly 100.

[0052] Optionally, the length of the return pipe 62 is shorter than the length of the outlet pipe 63. The flow resistance of the return pipe 62 can be reduced to avoid air lock.

[0053] like Figure 1 In some embodiments, the return pipe 62 includes a first pipe portion 623 extending in a vertical direction. The outlet pipe 63 includes a third pipe portion 631 extending in a vertical direction. The lower ends of the first pipe portion 623 and the third pipe portion 631 are connected to the outlet of the pumping unit 30. This simplifies the structure of the hot tank assembly 100 and facilitates fluid pumping by the pumping unit 30.

[0054] Optionally, the return pipe 62 also includes a second pipe portion 624, one end of the second pipe portion 624 is connected to the upper end of the first pipe portion 623, and the other end is connected to the top wall of the water storage unit 10, which can facilitate the water pumped out by the pumping unit 30 to flow back to the water storage space 101, thereby preventing the water stored in the water storage space 101 from flowing back along the return pipe 62, thereby improving the working efficiency and stability of the pumping unit 30 and reducing the noise of the pumping unit 30.

[0055] The water outlet pipe 63 further includes a fourth pipe portion 632 , one end of the fourth pipe portion 632 is connected to the upper end of the third pipe portion 631 , and the other end is connected to the water outlet unit 40 .

[0056] Furthermore, the length of the second pipe segment 642 is smaller than the length of the fourth pipe segment.

[0057] Optionally, the second tube portion 624 is disposed above the fourth tube portion 632, or the second tube portion 624 is disposed below the fourth tube portion 632. This can reduce the space occupied by the hot tank assembly 100 and improve the space utilization of the hot tank assembly 100.

[0058] like Figure 1 and Figure 4 In some embodiments, a return pipe 62 is provided between the outlet of the pumping unit 30 and the water storage space 101 , and an outlet pipe 63 is provided between the outlet of the pumping unit 30 and the water outlet unit 40 , and the flow area of ​​the outlet pipe 63 is larger than the flow area of ​​the return pipe 62 .

[0059] Specifically, in order to ensure that the entire water outlet system can not only solve the air blockage problem well but also discharge water smoothly, the flow area of ​​the return water flow path and the outlet water flow path must be reasonably designed. The design principle is: the inner diameter of the outlet water flow path is as large as possible (the design value of the present invention meets 3-point pipe diameter as much as possible, about 9.52mm), and the right angles are reduced, with the aim of reducing water resistance and ensuring that hot water can come out as much as possible; the inner diameter size of the return water flow path: at the outlet end of the pumping unit 30, that is, the starting end of the return water flow path, the size of the return water pipe 62 is as large as possible (for example, an inner diameter of 8mm), with the aim of reducing water resistance and allowing bubbles in the water to be discharged smoothly; at the same time, in the part of the pipeline that is about to enter the water storage unit 10, the inner diameter size of the pipe should be small (for example, an inner diameter of 5mm) to increase water resistance, with the aim of avoiding all water coming from the return water flow path and the outlet pipe 63 being unable to discharge water.

[0060] Optionally, the inner diameter of the water outlet pipe 63 is larger than the inner diameter of the water return pipe 62. The flow area of ​​the water outlet pipe 63 can be increased, while the flow area of ​​the water return pipe 62 can be reduced, so that as much water as possible pumped by the pumping unit 30 is sent to the water outlet unit 40, thereby increasing the water output of the hot tank assembly 100 and thus increasing the water output flow rate.

[0061] In addition, the flow area at the inlet end of the return pipe 62 is larger than the flow area at the outlet end. In addition, the flow area at other positions of the return pipe 62 can also be set to be larger than the flow area at the inlet end of the return pipe 62, so that the water pumped by the pumping unit 30 can be sent to the return pipe 62 to avoid the occurrence of air lock.

[0062] Optionally, the inner diameter of the inlet end of the return pipe 62 is larger than the inner diameter of the outlet end of the return pipe 62. The flow area of ​​the inlet end of the return pipe 62 can be increased, while the flow area of ​​the outlet end of the return pipe 62 can be reduced, so that as much water pumped by the pumping unit 30 as possible can be sent to the water outlet unit 40, thereby increasing the water output of the hot tank assembly 100 and thus increasing the water outlet flow rate.

[0063] Optionally, the flow area of ​​the first tube portion 623 is greater than the flow area of ​​the second tube portion 624 ; or, the inner diameter of the first tube portion 623 is smaller than the inner diameter of the second tube portion 624 .

[0064] like Figures 1 to 3 In some embodiments, the hot tank assembly 100 further includes a common pipe 64, a return pipe 62, and an outlet pipe 63. The common pipe 64 is connected to the outlet of the pumping unit 30. One end of the return pipe 62 is connected to the common pipe 64 and the other end is connected to the water storage space 101. One end of the outlet pipe 63 is connected to the common pipe 64 and the other end is connected to the water outlet unit 40. The common pipe 64 can be used to conveniently connect to the outlet of the pumping unit 30, simplifying the assembly structure of the hot tank assembly 100, facilitating assembly and maintenance of the hot tank assembly 100, and improving assembly efficiency of the hot tank assembly 100.

[0065] like Figure 1 The common pipe 64 includes a first pipe section 641 and a second pipe section 642. One end of the first pipe section 641 is connected to the outlet of the pumping unit 30, and the other end of the first pipe section 641 is connected to and connected to the second pipe section 642. Optionally, the lower end of the first pipe section 641 is connected to the pumping unit 30, and the first pipe section 641 extends in the vertical direction and is inclined from bottom to top toward the water storage unit 10 to reduce flow resistance in the common pipe 64.

[0066] Optionally, the second pipe section 642 extends in a direction surrounding the water storage unit 10 and is provided with a first interface and a second interface distributed in a direction surrounding the water storage unit 10. The return pipe 62 is connected to the first interface, and the outlet pipe 63 is connected to the second interface. This simplifies the structure of the common pipe 64, reduces the flow resistance within the common pipe 64, and improves the stability and pumping efficiency of the pumping unit 30.

[0067] The second interface is closer to the outlet of the pumping unit 30 than the first interface. The water sent out by the pumping unit 30 can be sent to the outlet flow path first, and the first interface can be used to connect the return flow path to avoid air blockage, thereby improving the working efficiency of the pumping unit 30.

[0068] like Figure 1 The common pipe 64 further includes a first sleeve 643, which is connected to the second pipe section 642 and communicates with the first interface, and the return pipe 62 is sleeved with the first sleeve 643. The common pipe 64 further includes a second sleeve 644, which is connected to the second pipe section 642 and communicates with the second interface, and the outlet pipe 63 is sleeved with the second sleeve 644. This facilitates the connection between the common pipe 64 and the return pipe 62, as well as the connection between the common pipe 64 and the outlet pipe 63, reduces the possibility of water leakage at the connection between the common pipe 64, the outlet pipe 63, and the return pipe 62, and optimizes the performance and stability of the hot tank assembly 100.

[0069] Optionally, the inner diameter of the first sleeve 643 is smaller than the inner diameter of the second sleeve 644 , so that the water flow delivered by the pumping unit 30 can be easily delivered to the water outlet unit 40 .

[0070] The first sleeve 643 extends in the up-down direction, the second sleeve 644 extends in the up-down direction, and the first sleeve 643 and the second sleeve 644 are distributed in a direction surrounding the water storage unit 10. This can optimize the pipeline arrangement and reduce flow resistance.

[0071] Optionally, the second sleeve 644 is closer to the first pipe section 641 than the first sleeve 643, and the first sleeve 643 and the second pipe section 642 are connected in an elbow, and the second pipe section 642 and the first pipe section 641 are connected in an elbow. This can avoid straight pipes at the pipe connection and reduce resistance during water circulation.

[0072] like Figure 1 In some embodiments, the hot tank assembly 100 further includes a mounting base 70, and the water storage unit 10 and the pumping unit 30 are arranged side by side on the mounting base 70, which can improve the integration of the hot tank assembly 100 and facilitate the assembly and maintenance of the drinking water equipment.

[0073] Optionally, the mounting base 70 is provided with a first positioning structure and a second positioning structure, wherein the water storage unit 10 is positioned in the first positioning structure and the pumping unit 30 is positioned in the second positioning structure, wherein the first positioning structure may include a panel that surrounds a positioning space for positioning the lower end of the water storage unit 10. In addition, the pumping unit 30 may be provided with a horizontal structure, for example, the pumping unit 30 is provided with a first support portion and a second support portion along the axial direction, and the first support portion and the second support portion are used to support the pumping unit 30.

[0074] According to the hot tank assembly 100 of the embodiment of the present invention, a hot water internal circulation structure is provided to solve the problem of gas blockage in boiling water outlet.

[0075] The main problems solved by the utility model include: using the pumping unit 30 to extract the boiling water (usually the water temperature reaches boiling) in the water storage unit 10 for people to drink or use,

[0076] In order to solve the above-mentioned problem of hot water outlet air blockage, a hot water internal circulation pipeline, namely the return pipe 62, is added to the system. Its main function is that when the pumping unit 30 starts to pump water, the return water flow path has a short head and a small pipe resistance, so the pumping unit 30 can start and work normally. A small amount of water circulates from the return pipe to the inside of the water storage unit 10, and most of the water flows out from the outlet pipe 63. At the same time, because the pipe resistance after the pumping unit 30 is reduced, the power of the pumping unit 30 is maximized, the hot water outlet flow rate is relatively stable, and air blockage will not occur.

[0077] An internal circulation pipeline is designed behind the water outlet of the pumping unit 30 of the drinking water device. When the water in the hot tank is heated to boiling and water is drawn, the pumping unit 30 starts working. Under the high-speed rotation of the motor of the pumping unit 30, the water in the water inlet pipe 61 of the pumping unit 30 is thrown out from the water outlet pipe 63 of the pumping unit 30 under the action of the centrifugal force of the pumping unit 30. This can solve the problem of air blockage when the vane pump is pumping hot water, solving the industry problem of air blockage when the vane pump is pumping hot water.

[0078] In addition, the hot pot assembly 100 of the present invention is further provided with a flow monitoring unit 80, which can be configured to detect the water flow rate. For example, the flow monitoring unit 80 can be provided between the pumping unit 30 and the water storage space 101 to monitor the flow rate pumped from the pumping unit 30 to the water outlet unit 40. For another example, the flow monitoring unit 80 can be connected to the water outlet pipe 63. By providing the flow monitoring unit 80, the water output of the water outlet unit can be monitored to facilitate quantitative water output. In addition, by providing a return water flow path from the pumping unit to the water storage space, the monitoring accuracy of the flow monitoring unit can be improved.

[0079] Optionally, the water storage unit 10 is also provided with an air outlet 104, which can be configured to draw out water vapor generated during the heating process of water in the water storage unit 10 to maintain the air pressure balance inside and outside the water storage unit 10, facilitate the water inlet and outlet and heating lamp in the water storage space 101, and improve the stability and safety of the hot tank assembly 100 during operation. In addition, the hot tank assembly 100 can also include an air outlet pipe, which can be connected to the air outlet 104 and connect the internal and external spaces of the water storage unit 10 to achieve air pressure balance inside and outside the water storage unit 10.

[0080] Optionally, the air outlet 104 may be provided at the upper portion of the water storage unit 10.

[0081] The present invention also provides a drinking water device, comprising: the hot pot assembly 100 according to the above.

[0082] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0084] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0085] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hot pot assembly (100), characterized in that: The invention comprises a water storage unit (10), a heating unit (20), a pumping unit (30), a water outlet unit (40) and a flow monitoring unit (80); the water storage unit (10) has a water storage space (101); the heating unit (20) is used to heat water in the water storage space (101); the inlet of the pumping unit (30) is connected to the water storage space (101); a return pipe (62) is provided between the outlet of the pumping unit (30) and the water storage space (101); a water outlet pipe (63) is provided between the outlet of the pumping unit (30) and the water outlet unit (40); the flow area of ​​the water outlet pipe (63) is larger than the flow area of ​​the return pipe (62); the flow monitoring unit (80) is provided between the pumping unit (30) and the water outlet unit (40) and is used to monitor the flow of water pumped from the pumping unit (30) to the water outlet unit (40).

2. The hot pot assembly (100) according to claim 1, characterized in that An air outlet is provided at the top of the water storage unit (10); and / or the water storage unit (10) comprises an inner shell and an outer shell, the water storage space (101) is provided on the inner side of the inner shell, the outer shell is provided on the outer side of the inner shell, and a vacuum cavity is provided between the inner shell and the outer shell or is filled with a heat-insulating medium.

3. The hot pot assembly (100) according to claim 1, characterized in that The inner diameter of the outlet pipe (63) is larger than the inner diameter of the return pipe (62); and / or the flow area of ​​the inlet end of the return pipe (62) is larger than the flow area of ​​the outlet end; and / or the inner diameter of the inlet end of the return pipe (62) is larger than the inner diameter of the outlet end of the return pipe (62).

4. The hot pot assembly (100) according to claim 1, characterized in that The return pipe (62) includes a first pipe portion (623) and a second pipe portion (624), wherein the first pipe portion (623) extends in the up-down direction, and the lower end of the first pipe portion (623) is connected to the outlet of the pumping unit (30), and the second pipe portion (624) is arranged above the water storage unit (10), and one end of the second pipe portion (624) is connected to the upper end of the first pipe portion (623), and the other end is connected to the top wall of the water storage unit (10).

5. The hot pot assembly (100) according to claim 4, characterized in that The flow area of ​​the first tube portion (623) is greater than the flow area of ​​the second tube portion (624); or, the inner diameter of the first tube portion (623) is smaller than the inner diameter of the second tube portion (624).

6. The hot pot assembly (100) according to claim 1, characterized in that The water storage unit (10) further comprises a second mounting pipe (12), a top wall of the water storage unit (10) being provided with a second opening, a lower end periphery of the second mounting pipe (12) being connected to a periphery of the second opening, and the return water pipe (62) comprising a first return water joint (621), the first return water joint (621) being sleeve-fitted with the second mounting pipe (12); And / or, the water outlet pipe (63) includes a third pipe portion (631) and a fourth pipe portion (632), the third pipe portion (631) extends in the up-down direction, the lower end of the third pipe portion (631) is connected to the outlet of the pumping unit (30), and the fourth pipe portion (632) is arranged above the water storage unit (10), one end of the fourth pipe portion (632) is connected to the upper end of the third pipe portion (631), and the other end is connected to the water outlet unit (40).

7. The hot pot assembly (100) according to claim 1, characterized in that The hot tank assembly (100) further includes a common pipe (64), the common pipe (64) being connected to the outlet of the pumping unit (30), one end of the return pipe (62) being connected to the common pipe (64) and the other end being connected to the water storage space (101), and one end of the outlet pipe (63) being connected to the common pipe (64) and the other end being connected to the water outlet unit (40).

8. The hot pot assembly (100) according to claim 7, characterized in that The common pipe (64) comprises a first pipe section (641) and a second pipe section (642); one end of the first pipe section (641) is connected to the outlet of the pumping unit (30), and the other end of the first pipe section (641) is connected to and connected to the second pipe section (642); the second pipe section (642) extends in a direction surrounding the water storage unit (10), and the second pipe section (642) is provided with a first interface and a second interface distributed in a direction surrounding the water storage unit (10); the return pipe (62) is connected to the first interface, and the outlet pipe (63) is connected to the second interface.

9. The hot pot assembly (100) according to claim 8, characterized in that The second interface is closer to the outlet of the pumping unit (30) than the first interface.

10. The hot pot assembly (100) according to claim 8, characterized in that The common pipe (64) further comprises a first sleeve (643), the first sleeve (643) being connected to the second pipe section (642) and communicating with the first interface, the return pipe (62) being sleeved with the first sleeve (643); the common pipe (64) further comprises a second sleeve (644), the second sleeve (644) being connected to the second pipe section (642) and communicating with the second interface, the outlet pipe (63) being sleeved with the second sleeve (644), the inner diameter of the first sleeve (643) being smaller than the inner diameter of the second sleeve (644).

11. The hot pot assembly (100) according to claim 10, characterized in that The first sleeve (643) extends in the up-down direction, the second sleeve (644) extends in the up-down direction, the first sleeve (643) and the second sleeve (644) are distributed in a direction surrounding the water storage unit (10); and / or, the second sleeve (644) is closer to the first pipe section (641) than the first sleeve (643), the first sleeve (643) and the second pipe section (642) are connected in a curved pipe, and the second pipe section (642) and the first pipe section (641) are connected in a curved pipe.

12. The hot pot assembly (100) according to claim 1, characterized in that The water storage space (101) comprises a water storage chamber (1011) and an air chamber (1012) that are interconnected. The air chamber (1012) is provided above the water storage chamber (1011). The inlet of the pumping unit (30) is connected to the water storage chamber (1011), and the outlet of the pumping unit (30) is connected to the air chamber (1012).

13. The hot pot assembly (100) according to claim 12, characterized in that The hot pot assembly (100) further comprises a liquid level monitoring unit (50), wherein the liquid level monitoring unit (50) is used to monitor the highest water level in the water storage space (101) so as to construct the air cavity (1012) above the water storage unit (10).

14. The hot tank assembly (100) according to any one of claims 1 to 13, characterized in that: The hot pot assembly (100) further comprises a mounting seat (70), the water storage unit (10) and the pumping unit (30) being arranged side by side on the mounting seat (70); and / or the pumping unit (30) is a centrifugal pump.

15. A drinking water device, characterized in that: include: The hot pot assembly (100) according to any one of claims 1 to 14.

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