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 flow path is arranged between an outlet of the pumping unit and the water storage space, a water outlet flow path is arranged between the outlet of the pumping unit and the water outlet unit, the flow path length of the water return flow path is smaller than that of the water outlet flow path, and the flow monitoring unit is arranged between the pumping unit and the water outlet unit and used for monitoring the flow pumped to the water outlet unit by the pumping 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, so that the air blockage is improved, the water outlet efficiency is improved, and the measurement precision of the flow monitoring unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and particularly relates to a hot water tank assembly and a drinking water device. Background Art

[0002] With the continuous improvement of people's living standards and the increasing requirements for health, in recent years, the market of water purifiers has shown rapid growth. The technical state has been upgraded from the earliest small flux of 50G to the current maximum of 2000G, and ordinary water purifiers have been very mature. There are mainly two mainstream technologies for the under-counter hot and clean water integrated machine. One is water-driven water outlet, that is, 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 end. The other technical solution is empty tank water pumping, that is, the water inside the hot water tank is heated to boiling, and a water pump is used to pump out the water for people to drink.

[0003] The commonly used water pump has no suction lift. It relies 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 water tank contains a large amount of bubbles, and the boiling point of water will decrease when the vane pump rotates at high speed, a large amount of bubbles will be generated on the surface of the vane pump motor. Coupled with the long hot water pipeline at the back end of the pump, and there will be situations such as reduced pipe diameter and pipeline turning, resulting in an increase in the flow resistance of the water in the pipeline, causing the hot water to not flow out or the flow rate to decrease significantly (commonly known as air blockage). Summary of the Utility Model

[0004] An object of the present utility model is to provide a hot water tank assembly and a drinking water device.

[0005] According to the hot water tank assembly of the embodiment of the present utility model, 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 communicated with the water storage space. A return water flow path is provided between the outlet of the pumping unit and the water storage space. An outlet water flow path is provided between the outlet of the pumping unit and the water outlet unit. The flow path length of the return water flow path is less than the flow path length of the outlet water flow path. The flow monitoring unit is arranged between the pumping unit and the water outlet unit to monitor the flow rate pumped by the pumping unit to the water outlet unit.

[0006] According to the hot water tank assembly of the embodiment of the present utility model, the outlet of the pumping unit is communicated with the water storage space to form a return water flow path, which improves air blockage and enhances the water outlet efficiency.

[0007] In addition, according to the hot water tank assembly of the above embodiment of the present utility model, the following additional technical features may also be provided:

[0008] In some embodiments, an air outlet is provided at the upper part of the water storage unit; and / or, the water storage unit includes an inner shell and an outer shell, the water storage space is arranged inside the inner shell, the outer shell is arranged outside the inner shell, and a vacuum chamber is provided between the inner shell and the outer shell or filled with a heat insulating medium.

[0009] In some embodiments, the hot water tank assembly further includes a return pipe, one end of the return pipe communicates with the outlet of the pumping unit and the other end communicates with the water storage space; the hot water tank assembly further includes a water outlet pipe, one end of the water outlet pipe communicates with the outlet of the pumping unit and the other end communicates with the water outlet unit.

[0010] In some embodiments, the length of the return pipe is less than the length of the water outlet pipe.

[0011] In some embodiments, the return pipe includes a first pipe portion, and the first pipe portion extends in the vertical direction; the water outlet pipe includes a third pipe portion, and the third pipe portion extends in the vertical direction; the lower end of the first pipe portion and the lower end of the third pipe portion communicate with the outlet of the pumping unit.

[0012] In some embodiments, the return pipe further includes a second pipe portion, 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, the water outlet pipe further includes a fourth pipe portion, 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, wherein the length of the second pipe portion is less than the length of the fourth pipe portion; and / or, the second pipe portion is disposed above or below the fourth pipe portion.

[0013] In some embodiments, the hot water tank assembly further includes a common pipe, the common pipe communicates with the outlet of the pumping unit, one end of the return pipe communicates with the common pipe and the other end communicates with the water storage space, and one end of the water outlet pipe communicates with the common pipe and the other end communicates with the water outlet unit.

[0014] In some embodiments, the common pipe includes a first pipe segment and a second pipe segment, one end of the first pipe segment communicates with the outlet of the pumping unit, the other end of the first pipe segment is connected and communicates with the second pipe segment; the second pipe segment extends along the direction around the water storage unit, and the second pipe segment is provided with a first interface and a second interface distributed along the direction around the water storage unit, the return pipe communicates with the first interface, and the water outlet pipe communicates with the second interface.

[0015] In some embodiments, the second interface is closer to the outlet of the pumping unit than the first interface.

[0016] In some embodiments, the common pipe further includes a first sleeve, the first sleeve is connected to the second pipe segment and communicates with the first interface, and the return water pipe is sleeved on the first sleeve; the common pipe further includes a second sleeve, the second sleeve is connected to the second pipe segment and communicates with the second interface, and the water outlet pipe is sleeved on the second sleeve.

[0017] 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 around the water storage unit; and / or, the second sleeve is closer to the first pipe segment than the first sleeve, the first sleeve is connected to the second pipe segment by a bent pipe, and the second pipe segment is connected to the first pipe segment by a bent pipe.

[0018] In some embodiments, the water storage space includes a water storage chamber and an air chamber that communicate with each other, the air chamber is arranged above the water storage chamber, the inlet of the pumping unit communicates with the water storage chamber, and the outlet of the pumping unit communicates with the air chamber.

[0019] In some embodiments, the hot water tank assembly further includes a liquid level monitoring unit, and the liquid level monitoring unit is used to monitor the highest water level in the water storage space so as to construct the air chamber in the upper part of the water storage unit.

[0020] In some embodiments, the hot water tank assembly further includes 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.

[0021] The drinking water device according to an embodiment of the present invention is characterized in that it includes: the hot water tank assembly as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective schematic view of a hot water tank assembly according to an embodiment of the present invention.

[0023] Figure 2 is a front view of a hot water tank assembly according to an embodiment of the present invention.

[0024] Figure 3 is a cross-sectional view of a hot water tank assembly according to an embodiment of the present invention.

[0025] Figure 4 is a cross-sectional view of a hot water tank assembly according to an embodiment of the present invention.

[0026] Figure 5 is a cross-sectional view of a hot water tank assembly according to an embodiment of the present invention.

[0027] Figure 6 is a cross-sectional view of a hot water tank assembly according to an embodiment of the present invention.

[0028] Reference numerals: hot water tank assembly 100, water storage unit 10, water storage space 101, water storage chamber 1011, air chamber 1012, first installation pipe 11, second installation 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, water return pipe 62, first water return joint 621, second water return joint 622, first pipe section 623, second pipe section 624, water outlet pipe 63, third pipe section 631, fourth pipe section 632, common pipe 64, first pipe segment 641, second pipe segment 642, first sleeve 643, second sleeve 644, mounting seat 70, flow rate monitoring unit 80. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0030] As Figures 1 to 3 , the hot water tank assembly 100 according to the embodiment of the present invention 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 can be a water storage container or a water storage tank, etc., and can have a water storage space 101. The heating unit 20 is used to heat the water in the water storage space 101, and the heating unit 20 can be a heating tube, electromagnetic heating, heat pump heating, etc. The inlet of the pumping unit 30 is communicated with the water storage space 101, and the outlet is communicated with 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 to the water outlet unit 40 and the water storage space 101. The pumping unit 30 can be a water pump, such as a vane pump, a centrifugal water pump, or a suction water pump, etc.

[0031] 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 water storage space 101 to be heated reaches a predetermined temperature, the heating is stopped. When water is needed, the pumping unit 30 can drive the water to flow. One of the water flows 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., to provide treated water. The other water flow can be pumped from the water storage space 101 back to the water storage space 101 to form a reflux. By setting the second water flow, the flow resistance when the pumping unit 30 pumps water can be reduced, so that the pumping unit 30 can pump water stably, reduce the resistance during the water flow process, avoid air resistance, avoid problems such as slow water outlet and intermittent water outlet, and facilitate the water supply of the water outlet unit 40.

[0032] The hot water tank assembly 100 according to the embodiment of the present invention can achieve stable water outlet of the water outlet unit 40, avoid air resistance during the pumping process of the pumping unit 30, effectively reduce the noise during the operation of the hot water tank assembly 100, increase the water output and water outlet efficiency of the water outlet unit 40, and facilitate the use of the hot water tank assembly 100.

[0033] The water storage unit 10 of the present invention may include an inner shell and an outer shell. The water storage space 101 is arranged inside the inner shell, and the outer shell is arranged outside the inner shell. An air layer, a vacuum layer or a heat insulating medium may be provided between the outer shell and the inner shell, which can improve the heat preservation ability of the water storage unit 10, save energy and protect the environment. In addition, the water storage unit 10 has a shell part, an upper cover part and a lower cover part. The shell part includes the aforementioned inner shell and outer shell. The upper cover part covers the upper end of the shell part and constructs the top wall of the water storage unit 10. The lower cover part covers the lower end of the shell part and constructs the bottom wall of the water storage unit 10.

[0034] The water storage space 101 in the present invention can be set to be full of water. In addition, during the heating process of the water in the water storage space 101, steam will be generated, resulting in an increase in the air pressure in the water storage space 101. Therefore, in the present invention, the water storage capacity of the water storage space 101 can be set to be less than the volume of the water storage space 101 to facilitate the heating of the water in the water storage space 101.

[0035] Such as Figure 3, in 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 in communication with each other. The air chamber 1012 is provided above the water storage chamber 1011. The inlet of the pumping unit 30 is in communication with the water storage chamber 1011, and the outlet of the pumping unit 30 is in communication with the air chamber 1012. During the water return process, the pumping unit 30 can pump the water in the water storage chamber 1011 out of the pumping unit 30 and send it to the air chamber 1012. The water flowing into the air chamber 1012 will flow back to the water storage chamber 1011, which can facilitate the pumping assembly to pump water from the water storage chamber 1011 and return it to the water storage space 101, improve the energy efficiency of the pumping unit 30. In addition, it can also prevent the water in the water storage space 101 from flowing back along the water return flow path, improve the stability, pumping efficiency and energy efficiency of the hot water tank assembly 100, and can also reduce the noise during the operation of the hot water tank assembly 100.

[0036] Optionally, as Figure 1 and Figure 2 , the hot water tank assembly 100 further includes a liquid level monitoring unit 50. The liquid level monitoring unit 50 is used to detect the highest water level in the water storage space 101 to construct an air chamber 1012 in the upper part 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, which is convenient for heating the water in the water storage unit 10. In addition, the liquid level monitoring unit 50 can also prevent problems such as overflow caused by too much water in the water storage space 101, and improve the stability and safety of the hot water tank assembly 100. Among them, the water storage unit 10 can also have a water inlet and a water valve connected to the water inlet and other structures, and quantitative water supply to the water storage container can be realized through the combination of the water valve and the liquid level monitoring unit 50.

[0037] Among them, the water level monitoring unit can include a first electrode 51 and a second electrode 52. The first electrode 51 and the second electrode 52 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 immersed in water, the conduction and energization state, current, voltage, resistance or capacitance, etc. between the first electrode 51 and the second electrode 52 will change, so as to detect the water level of the water storage space 101. Among them, 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. The air chamber 1012 is above the highest water level, and the water storage chamber 1011 is below. Of course, the water level monitoring unit in the present invention can also be in other forms, for example, the water level monitoring unit is set as a float type.

[0038] As Figure 1 and Figure 2, in combination with the foregoing, a return water 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 water flow path can enable the water pumped out by the pumping unit 30 from the water storage space 101 to flow back, so as to avoid the occurrence of air blockage. In addition, the water outlet flow path can facilitate the pumping unit 30 to send the water in the water storage space 101 to the water outlet unit 40.

[0039] Optionally, the flow path length of the return water flow path is less than the flow path length of the water outlet flow path. Optionally, after the water comes out of the pumping unit 30, there will be a return water flow path and a water outlet flow path. The return pipeline can be connected to the top wall of the water storage unit 10 and communicate with the inside of the water storage unit 10; the water outlet flow path is connected to the water outlet unit 40 of the whole machine, and the passage length of the water outlet flow path is long, for example, about 1.5 meters long. Because the return water flow path is short and the lift is small, the water resistance is small, and the water can flow back into the inside of the water storage unit 10 under the action of the pumping unit 30 through the return pipeline (there is an air cavity 1012 in the upper part of the water storage unit 10, and the water in the water storage space 101 is not full). The power of the pumping unit 30 can be set to be relatively large, for example, about 16W - 18W, the water flow rate is relatively large, and the excess water comes out of the water outlet unit 40 until it flows out of the water outlet unit 40, and the user can obtain hot water. The pumping unit 30 in the present invention can be a centrifugal pump. The centrifugal pump does not have a self-priming function. The greater the lift, the smaller the water resistance. After repeated tests and verifications, if there is no return pipeline, serious air blockage will occur during the initial water discharge, resulting in no water output, slow water output, or intermittent water output. After adopting the return water flow path in the present invention, the phenomenon of air blockage basically no longer occurs.

[0040] Such as Figure 1 and Figure 2 , in some embodiments, the hot water tank assembly 100 further includes a water inlet pipe 61. One end of the water inlet pipe 61 communicates with the inlet of the pumping unit 30, and the other end of the water inlet pipe 61 communicates with the water storage space 101. The connection between the pumping unit 30 and the water storage unit 10 can be realized through the water inlet pipe 61, and the water in the water storage unit 10 can be pumped out, which can avoid the limitation of the installation position of the pumping unit 30, improve the stability and safety of the hot water tank assembly 100, and facilitate the assembly and maintenance of the hot water tank assembly 100.

[0041] Optionally, the other end of the water inlet pipe 61 can be set to be connected to the bottom wall of the water storage unit 10. It is convenient for the water inlet pipe 61 to be connected to the water storage unit 10 and to pump out the water in the water storage unit 10.

[0042] Such as Figure 5, in some embodiments, the water storage unit 10 includes a first installation pipe 11. The bottom wall of the water storage unit 10 is provided with a first opening, and the peripheral edge of the upper end of the first installation pipe 11 is connected to the peripheral edge of the first opening. The water inlet pipe 61 includes a first water inlet joint 611, and the first water inlet joint 611 is sleeved and matched with the first installation pipe 11. This can facilitate the connection between the water storage unit 10 and the water inlet pipe 61, improve the stability of the connection between the water inlet pipe 61 and the water storage unit 10, and facilitate the sealing of the connection structure between the water inlet pipe 61 and the water storage unit 10.

[0043] Further, as Figure 2 and Figure 5 , the water inlet pipe 61 includes a first water inlet joint 611, a second water inlet joint 612, and a connecting pipe 613. The first water inlet joint 611 is connected to the bottom wall of the water storage unit 10. The second water inlet joint 612 communicates with the inlet of the pumping unit 30. The second water inlet joint 612 is provided on the side of the bottom of the water storage unit 10. The two ends of the connecting pipe 613 are respectively connected to the first water inlet joint 611 and the second water inlet joint 612, and are arranged to extend in the direction from the first water inlet joint 611 to the second water inlet joint 612. This can reduce the length of the connecting pipe 613, reduce the resistance of the connecting pipe 613, and improve the pumping energy efficiency of the pumping unit 30.

[0044] As Figure 1 and Figure 2 , in some embodiments, the hot water tank assembly 100 further includes a return water pipe 62. One end of the return water pipe 62 communicates with the outlet of the pumping unit 30, and the other end of the return water pipe 62 communicates with the water storage space 101. The return water pipe 62 can be used to guide the water pumped out by the pumping unit 30 to the water storage space 101, which can facilitate the assembly of the pumping unit 30 and the water storage unit 10, can avoid restrictions on the installation position of the pumping unit 30, improve the stability and safety of the hot water tank assembly 100, and facilitate the assembly and maintenance of the hot water tank assembly 100.

[0045] Optionally, the other end of the return water pipe 62 is connected to the top wall of the water storage unit 10. This facilitates the connection between the return water pipe 62 and the water storage unit 10, and facilitates the water pumped out by the pumping unit 30 to flow back to the water storage space 101.

[0046] Among them, as Figure 1 and Figure 6 , the water storage unit 10 may further include a second installation pipe 12. The top wall of the water storage unit 10 is provided with a second opening, and the peripheral edge of the lower end of the second installation pipe 12 is connected to the peripheral edge of the second opening. The return water pipe 62 includes a first return water joint 621, and the first return water joint 621 is sleeved and matched with the second installation pipe 12. This can facilitate the connection between the water storage unit 10 and the return water pipe 62, improve the stability of the connection between the return water pipe 62 and the water storage unit 10, and facilitate the sealing of the connection structure between the return water pipe 62 and the water storage unit 10.

[0047] In addition, the return water pipe 62 further includes a second return water joint 622, and the second return water joint 622 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.

[0048] The return water pipe 62 includes a first pipe portion 623 and a second pipe portion 624. The first pipe portion 623 extends in the vertical direction, and the lower end of the first pipe portion 623 communicates with the outlet of the pumping unit 30. The second pipe portion 624 is arranged above the water storage unit 10. 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 water storage space 101. The water resistance of the return water pipe 62 can be reduced, thereby further improving the pumping energy efficiency of the pumping unit 30. In addition, the structure of the hot water tank assembly 100 can be simplified, facilitating the assembly and maintenance of the hot water tank assembly 100.

[0049] As Figure 1 and Figure 2 In some embodiments, the hot water tank assembly 100 further includes a water outlet pipe 63. One end of the water outlet pipe 63 communicates with the outlet of the pumping unit 30 and the other end communicates with the water outlet unit 40. The connection between the pumping unit 30 and the water outlet unit 40 can be achieved through the water outlet pipe 63, enabling the pumping of the water in the water storage unit 10. This can avoid restrictions on the installation position of the pumping unit 30, improve the stability and safety of the hot water tank assembly 100, and facilitate the assembly and maintenance of the hot water tank assembly 100.

[0050] 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 vertical direction, and the lower end of the third pipe portion 631 communicates with the outlet of the pumping unit 30. 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. The water resistance of the water outlet pipe 63 can be reduced, thereby further improving the pumping energy efficiency of the pumping unit 30. In addition, the structure of the hot water tank assembly 100 can be simplified, facilitating the assembly and maintenance of the hot water tank assembly 100.

[0051] Optionally, the length of the return water pipe 62 is less than the length of the water outlet pipe 63. The flow resistance of the return water pipe 62 can be reduced to avoid air resistance.

[0052] As Figure 1 In some embodiments, the return water pipe 62 includes a first pipe portion 623 that extends in the vertical direction. The water outlet pipe 63 includes a third pipe portion 631 that extends in the vertical direction. The lower ends of the first pipe portion 623 and the third pipe portion 631 communicate with the outlet of the pumping unit 30. The structure of the hot water tank assembly 100 can be simplified, facilitating the pumping of fluid by the pumping unit 30.

[0053] Optionally, the return water pipe 62 further 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, prevent the water stored in the water storage space 101 from flowing back along the return water pipe 62, improve the working efficiency and stability of the pumping unit 30, and reduce the noise of the pumping unit 30.

[0054] Wherein, 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.

[0055] Further, the length of the second pipe segment 642 is less than the length of the fourth pipe segment.

[0056] Optionally, the second pipe portion 624 is disposed above the fourth pipe portion 632, or the second pipe portion 624 is disposed below the fourth pipe portion 632. This can reduce the space occupied by the hot water tank assembly 100 and improve the space utilization rate of the hot water tank assembly 100.

[0057] Such as Figure 1 and Figure 4 , in some embodiments, a return water pipe 62 is provided between the outlet of the pumping unit 30 and the water storage space 101, and 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 water pipe 62.

[0058] Specifically, in order to ensure that the entire water outlet system can well solve the air blockage problem and smoothly discharge water, the flow areas of the return water flow path and the water outlet flow path should be reasonably designed. The design principle is: the inner diameter of the water outlet flow path should be as large as possible (the design value of the present invention preferably meets the 3 / 8-inch pipe diameter, about 9.52 mm), and the right angles should be reduced, aiming to reduce the water resistance and ensure that as much hot water as possible can come out; the inner diameter size of the return water flow path: at the water outlet end of the pumping unit 30, i.e., the starting end of the return water flow path, the size of the return water pipe 62 should be as large as possible (for example, the inner diameter is 8 mm), aiming to reduce the water resistance and allow the air 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, the inner diameter is 5 mm) to increase the water resistance, aiming to prevent all the water from coming from the return water flow path and the water outlet pipe 63 from being unable to discharge water.

[0059] Optionally, the inner diameter of the water outlet pipe 63 is larger than the inner diameter of the return water pipe 62. This can increase the flow area of the water outlet pipe 63 and reduce the flow area of the return water pipe 62, so as to send as much water pumped out by the pumping unit 30 to the water outlet unit 40 as possible, improve the water output of the hot water tank assembly 100, and thus increase the water outlet flow rate.

[0060] In addition, the flow area at the inlet end of the return pipe 62 is larger than that at the outlet end. Additionally, 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 as to facilitate the water pumped out by the pumping unit 30 to enter the return pipe 62 and avoid the occurrence of air blockage phenomenon.

[0061] Optionally, the inner diameter of the inlet end of the return pipe 62 is larger than that of the water outlet end of the return pipe 62. The flow area at the inlet end of the return pipe 62 can be increased, and the flow area at the water outlet end of the return pipe 62 can be reduced, so as to facilitate as much water as possible pumped out by the pumping unit 30 to be sent to the water outlet unit 40, improve the water output of the hot water tank assembly 100, and thus increase the water output flow rate.

[0062] Optionally, the flow area of the first pipe portion 623 is larger than that of the second pipe portion 624; or, the inner diameter of the first pipe portion 623 is smaller than that of the second pipe portion 624.

[0063] Such as Figures 1 to 3 In some embodiments, the hot water tank assembly 100 further includes a common pipe 64, a return pipe 62, and a water outlet pipe 63. The common pipe 64 communicates with the outlet of the pumping unit 30. One end of the return pipe 62 communicates with the common pipe 64 and the other end communicates with the water storage space 101. One end of the water outlet pipe 63 communicates with the common pipe 64 and the other end communicates with the water outlet unit 40. It can facilitate the connection of the outlet of the pumping unit 30 using the common pipe 64, simplify the assembly structure of the hot water tank assembly 100, and facilitate the assembly and maintenance of the hot water tank assembly 100, improving the assembly efficiency of the hot water tank assembly 100, etc.

[0064] Such as 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 communicates with the outlet of the pumping unit 30, and the other end of the first pipe section 641 is connected and communicates with 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 inclines towards the water storage unit 10 in the upward direction from bottom to top, so as to facilitate reducing the flow resistance in the common pipe 64.

[0065] Optionally, the second pipe section 642 extends along the direction around the water storage unit 10. The second pipe section 642 is provided with a first interface and a second interface distributed along the direction around the water storage unit 10. The return pipe 62 communicates with the first interface, and the water outlet pipe 63 communicates with the second interface. It can simplify the structure of the common pipe 64, reduce the flow resistance in the common pipe 64, and improve the stability and pumping efficiency of the pumping unit 30.

[0066] Among them, the second interface is closer to the outlet of the pumping unit 30 than the first interface. It can facilitate the water pumped out by the pumping unit 30 to be preferentially sent to the water outlet flow path, and the first interface can be used to connect the return water flow path to avoid the air blockage phenomenon, improving the working efficiency of the pumping unit 30.

[0067] As Figure 1 shown, the common pipe 64 further includes a first sleeve 643 which connects the second pipe segment 642 and communicates with the first interface, and the return water pipe 62 is sleeved on the first sleeve 643; the common pipe 64 further includes a second sleeve 644 which connects the second pipe segment 642 and communicates with the second interface, and the water outlet pipe 63 is sleeved on the second sleeve 644. This can facilitate the connection between the common pipe 64 and the return water pipe 62, and also facilitate the connection between the common pipe 64 and the water outlet pipe 63, reducing the possibility of water leakage at the connection between the common pipe 64, the water outlet pipe 63 and the return water pipe 62, and optimizing the performance and stability of the hot water tank assembly 100.

[0068] Optionally, the inner diameter of the first sleeve 643 is smaller than that of the second sleeve 644. This can facilitate the water flow sent by the pumping unit 30 to the water outlet unit 40.

[0069] Among them, the first sleeve 643 extends in the up and down direction, the second sleeve 644 extends in the up and down direction, and the first sleeve 643 and the second sleeve 644 are distributed along the direction around the water storage unit 10. This can optimize the pipeline layout and reduce the flow resistance.

[0070] Optionally, the second sleeve 644 is closer to the first pipe segment 641 than the first sleeve 643. The first sleeve 643 is connected to the second pipe segment 642 by a bent pipe, and the second pipe segment 642 is connected to the first pipe segment 641 by a bent pipe. This can avoid straight pipes at the pipeline connections and reduce the resistance during the water flow process.

[0071] As Figure 1 shown, in some embodiments, the hot water tank assembly 100 further includes a mounting base 70. 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 water tank assembly 100 and facilitate the assembly and maintenance of the drinking water equipment.

[0072] Optionally, the mounting base 70 is provided with a first positioning structure and a second positioning structure. Among them, the water storage unit 10 is positioned at the first positioning structure, and the pumping unit 30 is positioned at the second positioning structure. The first positioning structure may include a surrounding plate which surrounds a positioning space for positioning the lower end of the water storage unit 10. In addition, the pumping unit 30 may be set as 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 pumping unit 30 is supported by the first support portion and the second support portion.

[0073] The hot water tank assembly 100 according to the embodiment of the present invention provides a hot water internal circulation structure, which solves the problem of air blockage in boiling water outlet.

[0074] The main problems solved by the present utility model include: using the pumping unit 30 to extract boiling water (usually reaching the boiling temperature) from the water storage unit 10 for people to drink or use.

[0075] To solve the above-mentioned problem of air blockage in hot water outlet, 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 pumping water, the head of the return water flow path is short and the pipe resistance is small, so that the pumping unit 30 can start working normally. A small part of the water circulates internally to the water storage unit 10 through the return pipe, and the vast majority of the water flows out through the water 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 exerted to the maximum value, and the flow rate of the hot water outlet is relatively stable without air blockage.

[0076] An internal circulation pipeline is designed behind the water outlet end of the pumping unit 30 of the drinking water device. When the water in the hot water tank is heated to boiling for water intake, the pumping unit 30 starts to work. 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. It can solve the problem of air blockage of the vane pump for pumping hot water in principle and solve the industry problem of air blockage that is likely to occur when the vane pump pumps hot water.

[0077] In addition, the hot water tank assembly 100 of the present utility model is further provided with a flow monitoring unit 80. The flow monitoring unit 80 can be set to detect the water outlet flow rate. For example, the flow monitoring unit 80 can be arranged between the pumping unit 30 and the water storage space 101 to monitor the flow rate of the water pumped by the pumping unit 30 to the water outlet unit 40. Another example is to connect the flow monitoring unit 80 to the water outlet pipe 63. By setting the flow monitoring unit 80, the water output of the water outlet unit can be monitored for quantitative water output. In addition, by setting the return water flow path from the pumping unit to the water storage space, the monitoring accuracy of the flow monitoring unit can be improved.

[0078] Optionally, the water storage unit 10 is further provided with an air outlet 104. The water outlet can be set to lead out the water vapor generated during the heating process of the water in the water storage unit 10 to maintain the air pressure balance inside and outside the water storage unit 10, facilitate the inflow, outflow and heating of water in the water storage space 101, and improve the stability and safety during the operation of the hot water tank assembly 100. In addition, the hot water tank assembly 100 can further include an air outlet pipe, and the air outlet pipe can be connected to the air outlet 104 and communicate with the internal and external spaces of the water storage unit 10 to achieve the air pressure balance inside and outside the water storage unit 10.

[0079] Optionally, the air outlet 104 can be arranged at the upper part of the water storage unit 10.

[0080] The present utility model also provides a drinking water device, including: the hot water tank assembly 100 as described above.

[0081] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0082] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0083] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0084] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0085] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0086] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A hot pot assembly (100), characterized in that, It includes 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 the water in the water storage space (101). The inlet of the pumping unit (30) is communicated with the water storage space (101). A return water flow path is provided between the outlet of the pumping unit (30) and the water storage space (101). A water outlet flow path is provided between the outlet of the pumping unit (30) and the water outlet unit (40). The flow path length of the return water flow path is less than that of the water outlet flow path. The flow monitoring unit (80) is arranged between the pumping unit (30) and the water outlet unit (40) for monitoring the flow rate pumped by 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 upper part of the water storage unit (10); and / or, the water storage unit (10) includes an inner shell and an outer shell. The water storage space (101) is arranged inside the inner shell, and the outer shell is arranged outside the inner shell. A vacuum cavity is provided between the inner shell and the outer shell or it is filled with a heat insulating medium.

3. The hot pot assembly (100) according to claim 1, wherein, The hot water tank assembly (100) further includes a return water pipe (62). One end of the return water pipe (62) is communicated with the outlet of the pumping unit (30) and the other end is communicated with the water storage space (101); the hot water tank assembly (100) further includes a water outlet pipe (63). One end of the water outlet pipe (63) is communicated with the outlet of the pumping unit (30) and the other end is communicated with the water outlet unit (40).

4. The hot pot assembly (100) according to claim 3, characterized in that, The length of the return water pipe (62) is less than that of the water outlet pipe (63).

5. The hot pot assembly (100) according to claim 3, characterized in that, The return water pipe (62) includes a first pipe portion (623) which extends in the up and down direction; The water outlet pipe (63) includes a third pipe portion (631) which extends in the up and down direction; The lower end of the first pipe portion (623) and the lower end of the third pipe portion (631) are communicated with the outlet of the pumping unit (30).

6. The hot pot assembly (100) according to claim 5, characterized in that, The return water pipe (62) further 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). 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). Wherein, the length of the second pipe portion (624) is less than that of the fourth pipe portion (632); and / or, the second pipe portion (624) penetrates above or below the fourth pipe portion (632).

7. The hot pot assembly (100) according to claim 3, characterized in that, The hot water tank assembly (100) further includes a common pipe (64). The common pipe (64) communicates with the outlet of the pumping unit (30). One end of the return water pipe (62) communicates with the common pipe (64), and the other end communicates with the water storage space (101). One end of the water outlet pipe (63) communicates with the common pipe (64), and the other end communicates with the water outlet unit (40).

8. The hot pot assembly (100) according to claim 7, wherein, The common pipe (64) includes a first pipe section (641) and a second pipe section (642). One end of the first pipe section (641) communicates with the outlet of the pumping unit (30), and the other end of the first pipe section (641) is connected to and communicates with the second pipe section (642). The second pipe section (642) extends along the direction around the water storage unit (10). The second pipe section (642) is provided with a first interface and a second interface distributed along the direction around the water storage unit (10). The return water pipe (62) communicates with the first interface, and the water outlet pipe (63) communicates with 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 9, characterized in that, The common pipe (64) further includes a first sleeve (643). The first sleeve (643) is connected to the second pipe section (642) and communicates with the first interface. The return water pipe (62) is sleeved with the first sleeve (643). The common pipe (64) further includes a second sleeve (644). The second sleeve (644) is connected to the second pipe section (642) and communicates with the second interface. The water outlet pipe (63) is sleeved with the second sleeve (644).

11. The hot pot assembly (100) according to claim 10, wherein, The first sleeve (643) extends in the up-down direction, and the second sleeve (644) extends in the up-down direction. The first sleeve (643) and the second sleeve (644) are distributed along the direction around 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) is connected to the second pipe section (642) by a bent pipe, and the second pipe section (642) is connected to the first pipe section (641) by a bent pipe.

12. The hot pot assembly (100) according to claim 1, wherein, The water storage space (101) includes a water storage chamber (1011) and an air chamber (1012) that communicate with each other. The air chamber (1012) is provided above the water storage chamber (1011). The inlet of the pumping unit (30) communicates with the water storage chamber (1011), and the outlet of the pumping unit (30) communicates with the air chamber (1012).

13. The hot pot assembly (100) according to claim 12, wherein The hot water tank assembly (100) further includes a liquid level monitoring unit (50). The liquid level monitoring unit (50) is used to monitor the highest water level in the water storage space (101) to construct the air chamber (1012) at the upper part of the water storage unit (10).

14. The hot pot assembly (100) according to any one of claims 1-4, characterized in that, The hot water tank assembly (100) further includes a mounting seat (70). The water storage unit (10) and the pumping unit (30) are 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, Comprising: The hot pot assembly (100) according to any one of claims 1-14.

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