Hot water system and purifying and heating all-in-one machine

Abstract

The hot water system comprises a hot tank assembly, a hot water pipeline, a water pump assembly, a backflow pipeline and a flow control piece, the hot tank assembly comprises a tank body and a heating piece, the heating piece is installed on the tank body, the tank body is provided with a water outlet and a water return port, the tank body has the length direction, and the water outlet and the water return port are communicated with each other. The heating piece extends along the length direction of the tank body; the water inlet end of the hot water pipeline is connected with the water outlet; the water pump assembly is arranged on the hot water pipeline and used for pumping water in the tank body to flow out to the water outlet end of the hot water pipeline through the water outlet. The backflow pipeline is communicated with the hot water pipeline and the water return port, and the backflow pipeline is communicated with the position, located at the downstream position of the water pump assembly, of the hot water pipeline; according to the hot water system, the water pumping efficiency of the hot water system can be improved in the hot water supply process of the purification and heating all-in-one machine.

Description

Technical Field

[0001] The present invention relates to the technical field of drinking water devices, and particularly to a hot water system and an integrated water purification and heating machine. Background Art

[0002] In related technologies, in drinking water devices with filtering and heating functions, when water is heated to boiling, a large number of bubbles are generated. These bubbles have an adverse impact during the process of discharging hot water, affecting the drainage efficiency. Summary of the Invention

[0003] Embodiments of the present application provide a hot water system and an integrated water purification and heating machine, which can improve the pumping efficiency of the hot water system during the process of the integrated water purification and heating machine providing hot water.

[0004] In a first aspect, embodiments of the present application provide a hot water system. The hot water system includes a hot water tank assembly, a hot water pipeline, a water pump assembly, a return pipeline, and a flow control member. The hot water tank assembly includes a tank body and a heating member. The heating member is installed in the tank body. The tank body has a water outlet and a water return port. The tank body has a length direction, and the heating member extends along the length direction of the tank body. The inlet end of the hot water pipeline is connected to the water outlet. The water pump assembly is arranged on the hot water pipeline and is used for pumping the water in the tank body to flow out through the water outlet to the outlet end of the hot water pipeline. The return pipeline communicates with the hot water pipeline and the water return port, and the return pipeline communicates with the hot water pipeline at a position downstream of the water pump assembly. The flow control member is used to adjust the water flow rate of the return pipeline.

[0005] In some of these embodiments, the flow control member is a flow limiting plug;

[0006] Alternatively, the flow control member is a reversing valve. The reversing valve is arranged at the connection between the inlet end of the return pipeline and the hot water pipeline, and selectively allows the water in the tank body to flow to the return pipeline or the outlet end of the hot water pipeline;

[0007] Alternatively, the flow control member includes:

[0008] A first solenoid valve that selectively communicates the outlet end of the water pump assembly and the water return port; and

[0009] A second solenoid valve that selectively communicates the outlet end of the water pump assembly and the outlet end of the hot water pipeline.

[0010] In some of these embodiments, the water pump assembly includes a water pump. The water pump has a water pump inlet. The water pump is connected to the tank body, and the water pump inlet is directly communicated with the water outlet;

[0011] The hot water system further includes:

[0012] A second sealing ring, which is clamped between the water pump and the tank body and is arranged around the outer sides of the water pump inlet and the water outlet.

[0013] In some embodiments, the water pump includes:

[0014] A pump housing, provided with the water pump inlet, and a first annular limiting portion surrounding the periphery of the water pump inlet is arranged on the outer side wall of the pump housing;

[0015] Wherein, the second sealing ring is limited by the first annular limiting portion.

[0016] In some embodiments, the first annular limiting portion is a first annular groove, the second sealing ring is installed in the first annular groove, and part of it protrudes outward to abut against the tank body.

[0017] In some embodiments, the tank body is provided with a first connection hole, and the pump housing is provided with a second connection hole;

[0018] The tank body and the pump housing are relatively fixed by sequentially passing a fastener through the first connection hole and the second connection hole.

[0019] In some embodiments, it further includes a third sealing ring, which is clamped between the tank body and the pump housing and is arranged around the first connection hole and the second connection hole.

[0020] In some embodiments, a second annular limiting portion surrounding the periphery of the second connection hole is arranged on the outer side wall of the pump housing, and the third sealing ring is limited by the second annular limiting portion.

[0021] In some embodiments, the second annular limiting portion is a second annular groove, the third sealing ring is installed in the second annular groove, and part of it protrudes outward to abut against the tank body.

[0022] In some embodiments, the outer diameter of the water pump inlet is smaller than the outer diameter of the water outlet, at least two opposite positioning portions are arranged at the top of the pump housing, the positioning portions are located outside the water pump inlet, and the outer wall surface of the positioning portion abuts against the inner wall of the water outlet.

[0023] In some embodiments, a guiding surface and a limiting surface are formed on the outer wall surface of the positioning portion and are connected in sequence from top to bottom. In the direction away from the water outlet, the guiding surface smoothly transitions from top to bottom to the limiting surface, and the limiting surface abuts against the inner wall of the water outlet.

[0024] In some embodiments, the water pump assembly includes a water pump and a water inlet pipe, and the water pump is communicated with the water outlet through the water inlet pipe;

[0025] Wherein, the water inlet pipe is connected to the water outlet, at least part of the center line of the water inlet pipe is arranged in an arc shape, at least the part of the water inlet pipe close to the water outlet extends upward, and the inner diameter decreases from top to bottom.

[0026] In some embodiments, the water inlet pipe includes:

[0027] A first pipe section, one end of which is connected to the water outlet, and the inner diameter decreases from top to bottom;

[0028] An arc transition section, connected to the end of the first pipe section far from the water outlet; and

[0029] A second pipe section, connected to the end of the arc transition section far from the first pipe section, and the other end of the second pipe section communicates with the water pump;

[0030] Wherein, the center line of the second pipe section forms an included angle with the center line of the first pipe section, and the water pump has a water pump inlet connected to the second pipe section, and the orientation of the water pump inlet is in a horizontal direction or an inclined upward direction.

[0031] In some embodiments, the inner diameter of the arc transition section decreases in the direction from the water outlet to the water pump.

[0032] In some embodiments, the water pump includes:

[0033] A water inlet part, having the water pump inlet, the water inlet part extends outward from the main body of the water pump, the water inlet part extends into the interior of the second pipe section, and the water pump inlet on the water inlet part is located at the corner between the arc transition section and the second pipe section.

[0034] In some embodiments, the inner diameter of the water inlet part decreases in the direction from the water outlet to the water pump.

[0035] In a second aspect, an embodiment of the present application provides a combined water purification and heating machine, including:

[0036] A housing assembly;

[0037] The hot water system as described above, installed in the housing assembly; and

[0038] A filtration system, installed in the housing assembly, and the filtration system is communicated with the hot water system.

[0039] In some of these embodiments, the integrated net heat machine further includes a controller, a first temperature sensor, a second temperature sensor, and a faucet. The filtration system includes a booster pump, a filter element, and a purified water pipe connecting the outlet of the filter element. Both the purified water pipe and the water outlet pipe are connected to the faucet, and the make-up water pipe communicates with the heating chamber;

[0040] Wherein, the first temperature sensor is used to detect the temperature in the heating chamber, the second temperature sensor is used to detect the temperature in the pure water pipeline, and the controller is used to receive the detection values of the first temperature sensor and the second temperature sensor, and control the operating power of the water pump and the booster pump to form water with a set temperature value at the faucet.

[0041] In the present application, during the water pumping process, the air pressure inside the tank will drop. In an environment with a relatively low air pressure, gases are more likely to expand and flow, which makes it easier for the gases in the pipeline to be sucked into the water pump, thereby increasing the risk of air blockage in the water pump and affecting the water pumping efficiency and stability of the water pump. The present application can alleviate the drop in air pressure in the tank to a certain extent through the return pipeline. In addition, the present application is also equipped with a flow control component to adjust the water flow rate in the return pipeline. By means of the flow control component, it can be ensured that the water flow rate in the return pipeline remains at an appropriate level, which can not only effectively balance the pressure but also avoid too small a flow rate at the water outlet end of the hot water pipeline, thus ensuring the sufficient supply of hot water while guaranteeing the stability of the system. Exemplarily, when the hot water system is started or the load suddenly increases, the flow control component is controlled to make the return pipeline provide a larger flow rate to balance the pressure of the system. When the hot water system is operating stably and the load changes little, the flow control component can be controlled to make the return pipeline maintain the balance state of the hot water system with a smaller flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0043] Figure 1 It is a schematic structural diagram of an embodiment of the integrated net heat machine of the present application;

[0044] Figure 2 It is a schematic assembly structure diagram of the outer shell and the middle shell of the integrated net heat machine of the present application;

[0045] Figure 3 It is a schematic structural diagram of the integrated net heat machine after removing the outer shell of the present application;

[0046] Figure 4 Schematic diagram of the assembly structure of the middle shell and the heat insulation cover in the integrated water purification and heating machine of the present application;

[0047] Figure 5 Water flow path diagram of the integrated water purification and heating machine of the present application;

[0048] Figure 6 Schematic diagram of the structure of the middle shell of the integrated water purification and heating machine of the present application;

[0049] Figure 7 Schematic diagram of the structure of the integrated water purification and heating machine of the present application with the side plate removed;

[0050] Figure 8 Schematic diagram of the water path of the hot water system according to the first embodiment of the present application;

[0051] Figure 9 Schematic diagram of the water path of the hot water system according to the second embodiment of the present application;

[0052] Figure 10 Schematic diagram of the water path of the hot water system according to the third embodiment of the present application;

[0053] Figure 11 Schematic diagram of the water path of the hot water system according to the fourth embodiment of the present application;

[0054] Figure 12 Schematic diagram of the water path of the hot water system according to the fifth embodiment of the present application;

[0055] Figure 13 Schematic diagram of the structure of the hot water system of the present application;

[0056] Figure 14 Cross-sectional view schematic diagram of the hot water system of the present application;

[0057] Figure 15 Exploded view schematic diagram of the hot water system of the present application;

[0058] Figure 16 Schematic diagram of the structure of the water pump of the present application;

[0059] Figure 17 Cross-sectional view schematic diagram of the hot water system according to another embodiment of the present application

[0060] Figure 18 Partial structure schematic diagram of the hot water system according to still another embodiment of the present application;

[0061] Figure 19 Front view schematic diagram of the partial structure of the hot water system of the present application;

[0062] Figure 20 is Figure 19 Cross-sectional view schematic diagram at A-A in;

[0063] Figure 21 is Figure 20 An enlarged schematic view of position B in

[0064] Explanation of the reference numerals in the attached drawings:

[0065] 1. Integrated hot and clean water machine; 10. Housing assembly; 12. Middle shell; 121. Substrate; 122. Water circuit board support seat; 1221. Seat body; 1222. Limiting plate; 123. Filter support seat; 1231. Installation cavity; 1232. Installation port; 124. Enclosure; 126. Support member; 10A. Outer shell; 11. Panel; 13. Back panel; 14. Top panel; 15. Bottom panel; 16. Side panel; 10a. Cavity; 103. Hot water tank cavity; 104. Filter element cavity; 20. Hot water tank assembly; 21. Tank body; 21a. Heating cavity; 21b. First connection hole; 211. Tank body; 212. Tank top cover; 213. Tank bottom cover; 214. Water inlet; 215. Exhaust port; 216. Water outlet; 218. Connecting water pipe; 219. Return water port; 22. Heating element; 201. Hot water pipeline; 202. Return pipeline; 2031. Flow limiting plug; 2032. Directional valve; 2033. First solenoid valve; 2034. Second solenoid valve; 204. Make-up water pipeline; 205. Exhaust pipeline; 27. Water outlet pipe; 30. Water pump; 30A1. Pump housing; 30A2. Second connection hole; 32. Water inlet pipe; 321. First pipe section; 322. Arc transition section; 323. Second pipe section; 33. Second sealing ring; 34. Third sealing ring; 35. Water inlet part; 351. Water pump inlet; 352. Water pump outlet; 361. First annular groove; 362. Second annular groove; 37. Positioning part; 371. Guiding surface; 372. Limiting surface; 50. Filtration system; 51. Primary filter element; 52. Secondary filter element; 53. Booster pump; 60. Water circuit board; 61. First water circuit board; 62. Second water circuit board; 63. Water inlet valve; 64. Check valve; 65. Waste water plug; 66. Make-up water valve; 70. Heat insulation member; 71. Heat insulation cover; 80. Control board; 90A. Leakage probe; 2. Water tap; 3. Pipeline machine.

[0066] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0067] To make the object, technical solutions and advantages of the present invention clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0068] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices and methods that are consistent with some aspects of the present invention as detailed in the appended claims.

[0069] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0071] Please refer to Figures 1 to 3 , this application proposes a combined water purification and heating machine 1. In the embodiment of this application, the combined water purification and heating machine 1 includes a housing assembly 10, a water circuit board 60, a filtration system 50, and a hot water system. Among them, the hot water system includes a hot water tank assembly 20 and a water pump assembly.

[0072] Among them, the housing assembly 10 serves as the external framework of the entire combined water purification and heating machine 1, and its overall outer contour is set in a rectangular shape. It is particularly suitable for installation and placement in the kitchen area. The kitchen usually has regular cabinet space, and the rectangular combined water purification and heating machine 1 can be easily embedded under the cabinet or placed in the corner of the kitchen countertop, integrating with the overall kitchen environment.

[0073] The waterway board 60 is used to provide a water flow channel so that the pure water filtered by the filtration system 50 can flow to the hot water tank assembly 20 for heating. At the same time, the water flow channel of the waterway board 60 can also discharge the filtered wastewater. By arranging the waterway board 60 inside the housing assembly 10, the protective performance of the housing assembly 10 is fully utilized to protect the waterway board 60. The waterway board 60 can be provided with multiple water flow channels, which is more convenient and faster to install compared with the traditional distributed water pipe connection. In terms of the material of the waterway board 60, a high-strength and corrosion-resistant composite material is selected. This material not only has excellent resistance to chemical erosion and can effectively resist the corrosion of various acid and alkali substances that may exist in the water to the waterway board 60, but also its unique molecular structure enables the waterway board 60 to maintain the integrity of the structure and the stability of the size under the long-term action of water flow pressure and temperature changes, thus ensuring the smoothness of the water flow channel.

[0074] Referring to Figure 4 , in some embodiments, the waterway board 60 includes a first waterway board 61 and a second waterway board 62 that are connected and communicate with each other. The filtration system 50 and the hot water tank assembly 20 are respectively located on opposite sides of the first waterway board 61, and the second waterway board 62 is arranged at an angle to the first waterway board 61. Specifically, the second waterway board 62 and the first waterway board 61 can be arranged at a perpendicular 90-degree angle. This standardized 90-degree angle design facilitates the development of molds and the standardization of production processes, reduces production costs and production cycles, and at the same time facilitates maintenance personnel to quickly locate and replace the components of the waterway board 60 when the equipment fails, reducing maintenance time and costs. Of course, the angle between the first waterway board 61 and the second waterway board 62 can also be 70°, 80°, 100°, 110°, etc. Such a setting optimizes the utilization of the internal space and performance of the housing assembly 10, can be flexibly arranged according to the actual space form inside the housing assembly 10, effectively adapts to the installation positions of the filtration system 50 and the hot water tank assembly 20, avoids the problem of space waste caused by the limited structure of the traditional waterway board 60, makes the connection between components more compact and efficient, reduces unnecessary pipeline length and complexity, reduces water flow resistance, thereby improving the water purification efficiency and water flow stability, reducing the hidden danger of water leakage, and ensuring the reliable operation of the integrated water purification and heating machine 1.

[0075] The filtration system 50 is a key part of the integrated water purifier and heater 1. By being installed inside the housing assembly 10, it makes full use of the protective performance of the housing, avoiding the interference of dust, water vapor and other possible pollutants to the filtration process, thus ensuring the reliability and stability of the filtration effect. The filtration system 50 and the hot water tank assembly 20 are connected through the water circuit board 60. The filtration system 50 includes a primary filter element 51, a secondary filter element 52 and a booster pump 53. The primary filter element 51 and the secondary filter element 52 are connected and communicated through the water circuit board 60. The booster pump 53 is used to transport the liquid filtered by the primary filter element 51 to the secondary filter element 52 through the water circuit board 60. The primary filter element 51 can be PAC (Polyaluminium Chloride). As the primary filtration unit, it mainly intercepts and removes larger particulate impurities, suspended solids, some colloids and some microorganisms in the water. The filtration material it uses has a larger pore size and surface area, which can efficiently capture these larger pollutants and prevent them from entering the subsequent filtration links, thus protecting the secondary filter element 52 from excessive blockage and pollution and extending the service life of the entire filtration system 50. The booster pump 53 plays an important role as the power in the filtration system 50. Its main function is to provide sufficient pressure for the water filtration process to ensure that the water preliminarily filtered by the primary filter element 51 can enter the secondary filter element 52 for deep purification through the water circuit board 60 or water pipes at a stable and appropriate flow rate. The water preliminarily filtered by the primary filter element 51 is transported to the secondary filter element 52 through the water circuit board 60 under the action of the booster pump 53. The secondary filter element 52 can be RO (Reverse Osmosis), which is the key link for achieving deep purification. It uses a more refined filtration material and can effectively remove harmful substances such as residual fine particles, dissolved organic matter, heavy metal ions, bacteria and viruses in the water. These tiny pollutants often pose a potential threat to human health. Through the fine filtration of the secondary filter element 52, it can ensure the provision of safe, pure and healthy drinking water for users.

[0076] The hot water tank assembly 20 is used to store and heat the filtered pure water, so as to meet the user's demand for hot water at any time, improving the functionality and practicality of the device.

[0077] The water pump 30 is disposed within the housing assembly 10 and is in communication with the water circuit board 60. Thus, relying on the water pumping performance of the water pump 30, the hot water within the hot water tank assembly 20 is pumped out and discharged through the water circuit board 60, so that the integrated water purification and heating machine 1 can provide efficient and stable water supply services, enabling users not to worry about affecting normal domestic water use due to insufficient water pressure or unstable water flow. Further, an inlet valve 63, a check valve 64, a waste water plug 65, and a water replenishing valve 66 can be installed on the water circuit board 60. The inlet valve 63 is used to control the conduction of the water path entering the filtration system 50 on the water circuit board 60. The check valve 64 is located between the filtration system 50 and the hot water tank assembly 20 to prevent the filtered water flow from flowing back. Referring to Figure 5 , the water flow path of this application is as follows: Tap water first flows into the water circuit board 60 from the interface of the water circuit board 60, and then undergoes primary filtration through the primary filter element 51. Subsequently, driven by the booster pump 53, the water flow passes through the secondary filter element 52 for secondary filtration. The waste water after two-stage filtration is discharged through the waste water plug 65, while the pure water is split into two paths through the check valve 64. One path can supply an external pipeline machine 3 to directly output normal temperature water; the other path, after the water replenishing valve 66 is opened, flows to the hot water tank assembly 20 and becomes hot water under the heating effect of the hot water tank assembly 20. When the user turns on the faucet 2, the water pump 30 will start to pump out the hot water in the hot water tank assembly 20 for use. In addition, the exhaust pipeline 205 of the hot water tank assembly 20 is directly connected to the faucet 2 to ensure the smoothness and safety of gas discharge.

[0078] However, due to the large number of components in the filtration system 50 and the hot water tank assembly 20 and the lack of systematic installation sequence, problems such as limited operating space, inaccurate positioning of components, and difficulty in immediate debugging and detection often occur during the assembly process, resulting in low assembly efficiency and low product qualification rate. To solve the above problems, the housing assembly 10 of this application includes a middle housing 12 and an outer housing 10A. The outer housing 10A is framed around the outer periphery of the middle housing 12. The water circuit board 60, the filtration system 50, and the hot water tank assembly 20 are all connected to the middle housing 12.

[0079] Based on the above embodiments, by adopting the housing assembly 10 including the middle housing 12 and the outer housing 10A, and connecting the water circuit board 60, the filtration system 50, and the hot water tank assembly 20 to the middle housing 12, the assembly process and performance of the integrated water purification and heating machine 1 are greatly optimized. In terms of assembly, the middle housing 12 provides a stable and relatively independent assembly platform for each component, solving the assembly problems caused by limited operating space. Workers can more conveniently and accurately position and install the filtration system 50 and the hot water tank assembly 20, improving the assembly efficiency and accuracy. Compared with directly assembling within the outer housing 10A, operating on the middle housing 12 can reduce the inconvenience caused by the shape and space limitations of the outer housing 10A.

[0080] Meanwhile, this connection method facilitates immediate debugging and detection of each component during the assembly process. That is, after the filtration system 50 and the hot water tank assembly 20 are installed on the middle shell 12, preliminary debugging and detection can be carried out on some functional modules on the middle shell 12, enabling potential problems to be discovered and solved in a timely manner, reducing the workload of rework and repair, effectively improving the product qualification rate, and reducing the production cost. In contrast, if the detection is carried out after the outer shell 10A is closed, once a problem is found, the outer shell 10A needs to be disassembled for repair, which will increase the difficulty and cost of repair. From a performance perspective, the stable assembly structure ensures the connection reliability between the water circuit board 60, the filtration system 50, and the hot water tank assembly 20, ensuring the stable transmission of water flow and the effective utilization of heat, improving the overall operation stability and reliability of the device, and thus providing users with a more stable and efficient integrated water purification and heating function experience.

[0081] It should be noted that the outer shell 10A and the middle shell 12 are fixed by means of screws or buckles, etc., to ensure a tight combination, maintain the stability and protection of the overall structure, and protect the internal components from external factors. It should be noted that the outer shell 10A may include a front panel 11, a back panel 13, a top panel 14, side panels 16, and a bottom panel 15. The front panel 11 is located on the front of the integrated water purification and heating machine 1 and is provided with components such as an operation interface and indicator lights. The back panel 13 is located at the rear of the integrated water purification and heating machine 1 and is closely connected to the side panels 16 to enclose the rear of the integrated water purification and heating machine 1. The top panel 14 is located on the top of the integrated water purification and heating machine 1, and the side panels 16 surround both sides of the integrated water purification and heating machine 1 and are seamlessly connected to other panels. The bottom panel 15 bears the weight of the integrated water purification and heating machine 1 and isolates the influence of the ground.

[0082] With reference to Figure 6 , in some embodiments, the middle shell 12 includes a base plate 121, a water circuit board support seat 122, and a filtration support seat 123. The base plate 121 includes an installation surface and an abutting surface arranged opposite to each other. The abutting surface is abutted and fixed to the inner wall of the outer shell 10A, and the hot water tank assembly 20 is connected to the installation surface. Among them, the base plate 121, as a basic component, its relatively arranged installation surface and abutting surface play a key role. The abutting surface is tightly abutted and fixed to the inner wall of the outer shell 10A, forming a stable connection structure, effectively enhancing the compressive capacity of the entire housing assembly 10, enabling the integrated water purification and heating machine 1 to better protect the internal components from damage when subjected to external pressure or collision, thereby extending the service life of the integrated water purification and heating machine 1 and reducing the maintenance cost and replacement frequency caused by the failure of the integrated water purification and heating machine 1 for users. The hot water tank assembly 20 can be fixed to the installation surface by means of screws or snap connections, etc.

[0083] The waterway board support seat 122 is connected to the installation surface, and the waterway board 60 is connected to the waterway board support seat 122. After the waterway board 60 is connected to the waterway board support seat 122, it can maintain a stable working state, avoiding displacement or deformation due to its own weight or water flow impact. The stable waterway board 60 can ensure the smoothness of the internal flow channel, reduce the water flow resistance, improve the water transmission efficiency, make the water purification process more efficient and fast, and meet the user's demand for stable water supply. Moreover, the precise support positioning helps to improve the connection accuracy between the waterway board 60 and other components, further reducing the risk of water leakage and ensuring the sealing and reliability of the entire water purification system.

[0084] The filter support seat 123 is connected to the installation surface and is spaced from the waterway board support seat 122, and the filter system 50 is connected to the filter support seat 123. This provides a dedicated installation position for the filter system 50. After the filter system 50 is connected to the filter support seat 123, it can work in a relatively stable and independent space, reducing the interference of external factors on the filtration process and ensuring the stability and reliability of the filtration effect. At the same time, the spaced structure is conducive to optimizing the internal space layout of the device, making the connection between components more reasonable and compact, facilitating the installation, maintenance and repair of the device. Maintenance personnel can more conveniently perform operations such as filter element replacement and cleaning on the filter system 50, reducing the maintenance difficulty and cost, and improving the maintainability of the device.

[0085] The above settings make the waterway board 60, the filter system 50 and the hot water tank assembly 20 all located on one side of the installation surface of the base plate 121. From the perspective of the convenience of production and assembly, concentrating these key components on the same side of the installation surface of the base plate 121, this layout enables workers to complete the installation of components such as the waterway board 60, the filter system 50 and the hot water tank assembly 20 in sequence and orderly at a relatively fixed position and direction, without complex flipping operations, greatly shortening the assembly time, reducing the labor input, and improving the production efficiency. In terms of the overall stability and reliability of the device, this same-side layout also plays an important role. Since the relative positions between components such as the waterway board 60, the filter system 50 and the hot water tank assembly 20 are closer and more stable after installation, problems such as connection loosening and displacement that may occur due to components being distributed on different sides are reduced.

[0086] Furthermore, the middle housing 12 further includes a retaining wall 124. The retaining wall 124 is connected to the edge of the mounting surface. The waterway board support seat 122, the filter support seat 123, the substrate 121, and several baffles enclose to form a cavity 10a. Both the hot water tank assembly 20 and the waterway board 60 are located within the cavity 10a. From the perspective of the overall structure of the device, the presence of the retaining wall 124 further improves the structural integrity of the middle housing 12 and enhances the protection ability for the internal components. It can effectively block the entry of external dust, water vapor, and other possible impurities into the cavity 10a. The cavity 10a provides a relatively stable and independent working environment for the hot water tank assembly 20 and the waterway board 60. Due to the space formed by the close enclosure of each component, the interference of external factors on the hot water tank assembly 20 and the waterway board 60 is reduced. In addition, when maintenance or repair of the device is required, the presence of the cavity 10a enables maintenance personnel to more clearly locate and operate the hot water tank assembly 20, the waterway board 60, and their related components. Compared with devices with an open or loose structure, the enclosed cavity 10a reduces the difficulty of component search and fault troubleshooting, improves the repair efficiency, and reduces the maintenance cost and time.

[0087] With reference to Figure 3 , Figure 4 and Figure 7 , in some embodiments, the integrated purifying and heating machine 1 further includes a heat insulation member 70, which is disposed within the housing assembly 10 and divides the cavity 10a of the housing assembly 10 into a filter element cavity and a hot water tank cavity 103. The filtration system 50 is located within the filter element cavity, and the hot water tank assembly 20 is located within the hot water tank cavity 103. By providing the heat insulation member 70 to divide the cavity 10a of the housing assembly 10 into a filter element cavity and a hot water tank cavity 103, on the one hand, it effectively blocks a large amount of heat generated during the operation of the hot water tank assembly 20 from radiating to the filtration system 50, avoiding problems such as accelerated aging of the filter material, reduced filtration efficiency and accuracy caused by heat radiation, and ensuring that the filtration system 50 can maintain high filtration performance stably for a long time, thereby continuously and stably providing clean and safe drinking water for users. On the other hand, due to the heat insulation effect of the heat insulation member 70 on the hot water tank assembly 20, the temperature influence of heat on the normal temperature water is weakened, enabling the normal temperature water to maintain within a suitable temperature range, ensuring the user's demand for the quality of the normal temperature water, and avoiding problems such as water quality change and taste change caused by the increase in the temperature of the normal temperature water. At the same time, it prevents the deformation and damage of the internal sealing materials within the filtration system 50 and the interference of sensitive electronic components or sensors caused by high temperature, reduces the occurrence probability of equipment leakage faults, improves the overall operation stability and safety of the device, reduces the user's usage cost and maintenance frequency, and brings a more reliable and convenient usage experience to the user.

[0088] Furthermore, the heat insulation member 70 includes a heat insulation cover 71, which is detachably connected to the middle shell 12 and encloses a heat storage cavity 103 with the middle shell 12. The heat insulation cover 71 can effectively reduce the heat dissipation of the heat storage assembly 20 to the surrounding environment and improve the utilization efficiency of heat. Compared with the traditional coating-type heat insulation material on the heat storage assembly 20, the heat insulation cover 71 has better integrity and stability. The coating-type heat insulation material may crack, peel off, etc. over time, thus reducing the heat insulation effect. However, the heat insulation cover 71, as an independent structural component, can always maintain its complete heat insulation performance, effectively block the heat dissipation of the heat storage assembly 20 to the surrounding environment, and improve the utilization efficiency of heat. At the same time, compared with some embedded heat insulation structures, the detachable feature of the heat insulation cover 71 provides great convenience for maintenance personnel. When the heat storage assembly 20 fails and needs to be repaired or replaced, the maintenance operation of the embedded heat insulation structure is often extremely complex, and a large number of surrounding components may need to be removed to access the heat storage assembly 20. However, the heat insulation cover 71 can be easily detached from the middle shell 12, and the heat storage assembly 20 can be directly operated without having to difficultly search for and handle faulty components in the complex heat insulation structure, greatly shortening the maintenance time and downtime, and improving the availability and maintenance efficiency of the equipment. In addition, the heat insulation member 70 may further include a heat insulation layer attached to the inside of the middle shell 12 to further improve the heat insulation effect.

[0089] Furthermore, the enclosure 124, the substrate 121, the filter support base 123, and the water circuit board support base 122 are an integral member. Such an integrated design greatly enhances the overall strength and rigidity of the middle shell 12. There are no connection gaps or weak points between the parts, enabling the middle shell 12 to more firmly bear the weights of the internal water tank, the water circuit board 60, and the filtration system 50, as well as external impact forces and vibrations, effectively preventing component deformation, displacement, or damage caused by long-term use or accidental collisions, ensuring the stable operation of the precision components inside the equipment, reducing the probability of equipment failures, and extending the service life of the equipment.

[0090] Refer to Figure 6 and Figure 7, in some structural forms, the filter support base 123 and the waterway board support base 122 are arranged in sequence along the front-back direction of the housing 10A, and the hot water tank assembly 20 is located on the side of the waterway board support base 122 away from the filter support base 123. In this way, the filter support base 123 is arranged away from the hot water tank assembly 20, which can effectively reduce the high-temperature influence of the hot water tank assembly 20 on the filtration system 50. Since the hot water tank assembly 20 generates heat during operation, if it is too close to the filtration system 50, the high-temperature environment may have a negative impact on the performance of the filter material. By keeping a certain distance between the filter support base 123 and the hot water tank assembly 20, the filtration system 50 can be in a relatively stable and suitable temperature environment, ensuring the stable performance of the filter material, maintaining an efficient filtration effect, extending the overall service life of the filtration system 50, reducing the user's usage cost and maintenance cost, and enhancing the reliability and durability of the product.

[0091] Further, an installation cavity 1231 is provided in the filter support base 123, and an installation opening 1232 communicating with the installation cavity 1231 is formed on the side of the filter support base 123 facing away from the waterway board support base 122. The installation opening 1232 is used for the filter element of the filtration system 50 to pass through and be installed in the installation cavity 1231. It can be understood that when the filter element passes through and is fixed in the installation cavity 1231 through the installation opening 1232, the filter element and the filter support base 123 form a tightly combined integral structure. In this way, it can effectively prevent the filter element from being displaced, loosened or even damaged due to water flow impact, equipment vibration or other external factors, thus ensuring the stability and reliability of the filtration system 50 and enabling the filtration process to proceed continuously and efficiently. From the perspective of long-term use, the stable filter element installation method reduces the risk of wear and leakage of the filter medium caused by frequent shaking or displacement of the filter element, extends the service life of the filter element, and reduces the frequency and cost of the user replacing the filter element. At the same time, the stable filtration process also ensures the stability of the purified water quality, provides a solid foundation for the stable operation of the subsequent waterway board 60 and the entire hot and clean water integrated machine 1, reduces the potential damage to other components of the equipment caused by water quality fluctuations, reduces the overall repair rate and maintenance cost of the equipment, and enhances the durability and performance stability of the equipment. In addition, an avoidance hole is formed at one end of the filter support base 123 facing away from the installation opening 1232. The avoidance hole is used for the filter element to communicate with the waterway board 60. The existence of the avoidance hole optimizes the connection structure between the filter element and the waterway board 60. Compared with complex or indirect connection methods, it reduces possible fault points such as connection looseness and water leakage, making the connection between the filter element and the waterway board 60 tighter and more stable.

[0092] It should be noted that when the filter system 50 includes a primary filter element 51 and a secondary filter element 52, the two corresponding installation cavities 1231 on the filter support seat 123 further optimize the installation and management of the filter element. This design allows filter elements with different functions to be installed and operated in their own independent and adapted spaces, avoiding possible mutual interference and influence between different filter elements, ensuring that each filter element can give full play to its due filtering performance, and improving the filtering accuracy and efficiency of the entire filter system 50.

[0093] Furthermore, the waterway plate support seat 122 includes a seat body 1221 and a limit plate 1222, the seat body 1221 is connected to the installation surface, the limit plate 1222 is connected to the side of the seat body 1221 away from the installation surface, the waterway plate 60 is detachably connected to the seat body 1221, and the surface of the waterway plate 60 facing the hot tank assembly 20 is in contact with the limit plate 1222. Among them, the feature that the waterway plate 60 is detachably connected to the seat body 1221 greatly optimizes the maintenance and repair process of the equipment. When the waterway plate 60 is blocked, leaking or other faults occur, maintenance personnel can quickly and conveniently remove it from the seat body 1221 and conduct targeted inspection, cleaning or component replacement operations without complex disassembly of the entire equipment, which not only significantly shortens the maintenance time, but also reduces the downtime. Secondly, the existence of the limit plate 1222 can accurately control the safe distance between the waterway plate 60 and the hot tank assembly 20, and prevent the waterway plate 60 from being too close to the hot tank assembly 20 due to various factors after installation. The effective constraint of the position of the waterway plate 60 by the limit plate 1222 ensures that the normal temperature water can maintain a stable and suitable temperature state in the waterway, so that the various physical and chemical properties of the water can be maintained at a normal level, thereby ensuring that the subsequent filtration, purification and other links can be carried out according to the expected standards and effects, and improving the quality and stability of purified water.

[0094] Reference Figure 3 and Figure 4 Optionally, the middle shell 12 also includes a support member 126, which is connected to the filter support seat 123 and the enclosure 124. The heat and air purifier 1 also includes a control panel 80, which is fixed to the side of the support member 126 away from the mounting surface, and the control panel 80 is electrically connected to the hot tank assembly 20. From the perspective of the overall layout and stability of the equipment, the support member 126, as a key component connecting the filter support seat 123 and the enclosure 124, enhances the integrity and rigidity of the internal structure of the middle shell 12. It can effectively disperse and withstand various stresses generated during the operation of the equipment. Whether it is the force caused by water flow impact, thermal expansion and contraction or external vibration, it can be reasonably distributed and buffered through the support member 126, thereby ensuring that the relative positions of the filter support seat 123, the enclosure 124 and other internal components are stable and unchanged.

[0095] In terms of the operating environment and safety of the control board 80, fixing it on the side of the support member 126 away from the mounting surface and electrically connecting it to the hot water tank assembly 20 has obvious advantages. On the one hand, this position is far from the possible water sources and humid environments, reducing the risk of short circuit, damage or malfunction of the control board 80 caused by water vapor erosion, ensuring the stable and reliable electrical performance of the control board 80, and enabling it to accurately monitor and control the heating process, temperature regulation and other related functions of the hot water tank assembly 20. On the other hand, the close electrical connection with the hot water tank assembly 20 enables the control board 80 to obtain the working state information of the hot water tank assembly 20 in real time and accurately, and make corresponding adjustments and feedback in a timely manner, optimizing the heating efficiency and energy utilization rate of the hot water tank assembly 20, avoiding situations such as overheating or underheating, ensuring that users can obtain hot water at an appropriate temperature at any time, and saving energy consumption. Considering the convenience of equipment maintenance and upgrade, this structural design provides great convenience for subsequent operations. When it is necessary to check, repair or upgrade the control board 80, maintenance personnel can relatively easily reach the position of the control board 80 on the support member 126 through a reasonable disassembly path, without the need to conduct large-scale disassembly and complex operations on the entire equipment, saving maintenance time and labor costs, and improving the maintainability and upgradability of the equipment.

[0096] Furthermore, the integrated water purification and heating machine 1 further includes a water leakage probe 90A, and the water leakage probe 90A is connected to the support member 126 and abuts against the bottom surface in the height direction of the housing 10A. In terms of the accuracy and timeliness of water leakage detection, the water leakage probe 90A in such a position can efficiently monitor the possible water leakage at the bottom of the integrated water purification and heating machine 1. Since water tends to accumulate at the bottom of the equipment under the action of gravity, the water leakage probe 90A directly abuts against the bottom surface of the housing 10A. Once there is a very small amount of water leakage, it can quickly sense and transmit a signal to the control system, triggering a corresponding alarm mechanism or taking emergency protection measures, such as cutting off the power supply and stopping the water circuit operation. This accurate and rapid water leakage detection ability greatly reduces the risk of short circuit, electrical failure of the integrated water purification and heating machine 1 and damage to the surrounding environment caused by the failure to detect water leakage in a timely manner, effectively protecting the internal precision components of the integrated water purification and heating machine 1 and the user's safety in use.

[0097] The following will Figure 8 be combined with the attached Figure 16 drawings to elaborate on the hot water system in detail.

[0098] Please refer to Figure 8, the hot water system includes a hot water tank assembly 20, a water pump assembly, a hot water pipeline 201, a return pipeline 202, and a flow control member. The hot water tank assembly 20 includes a tank body 21 and a heating member 22. The tank body 21 has a heating chamber 21a, and the heating member 22 is installed on the tank body 21. Among them, the heating member 22 can be installed inside the heating chamber 21a, or can be installed outside the tank body 21 and attached to the outer surface of the tank body 21, or can also be buried inside the tank body 21. The tank body 21 has a length direction, and the heating member 22 extends along the length direction of the tank body 21, so that the heating efficiency of the heating member 22 for the water in the heating chamber 21a can be improved. The tank body 21 has a water outlet 216 and a water return port 219 communicating with the heating chamber 21a; the water inlet end of the hot water pipeline 201 is connected to the water outlet 216; the water pump assembly is arranged on the hot water pipeline 201 for pumping the water in the tank body 21 to flow out through the water outlet 216 to the water outlet end of the hot water pipeline 201; the return pipeline 202 communicates with the hot water pipeline 201 and the water return port 219, and the return pipeline 202 communicates with the hot water pipeline 201 at a position downstream of the water pump 30; the flow control member is used to adjust the water flow rate of the return pipeline 202.

[0099] Specifically, during the pumping process, the air pressure in the heating chamber 21a inside the tank body 21 will show a downward trend. In an environment with lower air pressure, gases are more likely to expand and flow, which makes the gases in the pipeline more easily sucked into the water pump 30, thereby increasing the risk of air blockage in the water pump 30 and affecting the pumping efficiency and stability of the water pump 30. In this application, the return pipeline 202 can relieve the downward pressure in the tank body 21 to a certain extent. In addition, this application is also equipped with a flow control member to adjust the water flow rate in the return pipeline 202. Through the flow control member, it can be ensured that the water flow rate in the return pipeline 202 remains at an appropriate level, which can not only effectively balance the pressure, but also avoid too small a flow rate at the water outlet end of the hot water pipeline 201, thereby ensuring the stability of the system while ensuring an adequate supply of hot water. Exemplarily, when the hot water system is started or the load suddenly increases, the flow control member is controlled to make the return pipeline 202 provide a larger flow rate to balance the pressure of the system. When the hot water system is operating stably and the load changes little, the flow control member can be controlled to make the return pipeline 202 maintain the balance state of the hot water system with a smaller flow rate.

[0100] Optionally, please refer to Figure 8, the flow control component is a flow limiting plug 2031. The flow limiting plug 2031 may include a diaphragm, and a plurality of water passing holes are arranged on the diaphragm. The aperture of the water passing holes is set relatively small. When the negative pressure in the pipeline is relatively large, the water in the hot water pipeline 201 can flow through the water passing holes of the flow limiting plug 2031 to the water return port 219. After the negative pressure in the pipeline stabilizes, the flow limiting plug 2031 can prevent most of the hot water in the hot water pipeline from flowing to the water return port 219. Inside the flow limiting plug 2031, there is a diaphragm which has certain elasticity and sealing performance. A plurality of water passing holes are arranged on the diaphragm, and the apertures of these holes are relatively small to limit the passing speed of the fluid. When a relatively large negative pressure appears in the pipeline, the diaphragm will deform under the suction force of the negative pressure. Due to the small aperture of the water passing holes, the deformation of the diaphragm will cause part of the water in the hot water pipeline 201 to flow through these small holes to the water return port 219, thereby alleviating the negative pressure state of the pipeline to a certain extent. It can be understood that since the pipeline of the hot water pipeline 201 is connected to the tank body 21, the decrease in the air pressure in the heating chamber 21a in the tank body 21 can also be alleviated to a certain extent. When the negative pressure in the pipeline gradually stabilizes, the diaphragm gradually returns to its original state under the combined action of its own elasticity and the pressure in the pipeline. At this time, the water passing holes on the diaphragm will be partially or completely closed, thereby preventing most of the hot water in the hot water pipeline from continuing to flow to the water return port 219 and ensuring the water flow at the water outlet end of the hot water pipeline 201.

[0101] Optionally, please refer to Figure 9 , the flow control component is a reversing valve 2032. The reversing valve 2032 is arranged at the connection between the water inlet end of the return pipeline 202 and the hot water pipeline 201, and can selectively direct the water in the tank body 21 to flow to the water return pipeline 202 or the water outlet end of the hot water pipeline 201. The reversing valve 2032 can flexibly adjust the flow direction of the water according to the pressure situation in the pipeline. When the system pressure is balanced, more water can be directed to the hot water pipeline 201 to meet the user's hot water demand; when the system pressure is too high or pressure balance is required, part of the water can be directed to the return pipeline 202 to maintain the stability of the system. Through the regulation of the reversing valve 2032, the pressure between the hot water pipeline 201 and the return pipeline 202 can be effectively balanced.

[0102] Optionally, please refer to Figure 10 , the flow control component includes a first solenoid valve 2033 and a second solenoid valve 2034. The first solenoid valve 2033 can selectively connect the water outlet end of the water pump assembly and the water return port 219; the second solenoid valve 2034 can selectively connect the water outlet end of the water pump assembly and the water outlet end of the hot water pipeline 201. By independently controlling the on-off of the hot water pipeline 201 and the return pipeline 202 through the two solenoid valves, the hot water system can flexibly switch the water flow path. When the pressure in the pipeline is relatively stable, the second solenoid valve 2034 can be opened; when the negative pressure in the pipeline is relatively large, the first solenoid valve 2033 can be opened to make the water flow back to the water return port 219.

[0103] Please refer to Figures 8 to 10 In some embodiments, the hot water system further includes a make-up water pipeline 204 and an exhaust pipeline 205. The make-up water pipeline 204 is connected to and communicates with the tank body 21. The exhaust pipeline 205 communicates the inside and outside of the tank body 21 and is connected to the top of the tank body 21. The make-up water pipeline 204 can timely supplement the water volume in the tank body 21 to avoid a decrease in heating efficiency or damage to the heating element 22 caused by insufficient water volume. The exhaust pipeline 205 can discharge the gas in the tank body 21, including water vapor, air, etc., to ensure the stable air pressure in the heating chamber 21a. It can be understood that during the heating process, due to the increase in water temperature, a large amount of water vapor will be generated. If not discharged in time, it will cause the pressure in the tank body 21 to increase, affecting the heating efficiency and equipment safety.

[0104] Please refer to Figure 11 In some embodiments, the return pipeline 202 communicates with the hot water pipeline 201 and the make-up water pipeline 204. That is to say, the water outlet end of the return pipeline 202 is connected to the make-up water pipeline 204. In this way, it is not necessary to open multiple holes on the tank body 21 to separately connect the make-up water pipe and the return water pipe, thus simplifying the structure of the tank body 21, reducing the manufacturing cost, and also reducing the sealing and leakage problems that may be caused by the holes. Moreover, the return pipeline 202 and the make-up water pipeline 204 can share part of the pipeline. That is to say, on the original structure, the water outlet pipe 27 and the make-up water pipe can be connected by adding a return pipe.

[0105] Please refer to Figure 12 In some embodiments, the return pipeline 202 communicates with the hot water pipeline 201 and the exhaust pipeline 205. That is to say, the water outlet end of the return pipeline 202 communicates with the exhaust pipeline 205. In this way, it is not necessary to open multiple holes on the tank body 21 to separately connect the return water pipe and the exhaust pipe, thus simplifying the structure of the tank body 21, reducing the manufacturing cost, and also reducing the sealing and leakage problems that may be caused by the holes. Moreover, the return pipeline 202 and the exhaust pipeline 205 can share part of the pipeline. That is to say, on the original structure, the water outlet pipe 27 and the exhaust pipe can be connected by adding a return pipe.

[0106] Please refer to Figures 13 to 16 The hot water system further includes a second sealing ring 33. The water outlet 216 is located at the lower part of the tank body 21. Among them, the tank body 21 includes a tank body 211, a tank top cover 212, and a tank bottom cover 213. The tank body 211, the tank top cover 212, and the tank bottom cover 213 enclose to form a heating chamber 21a.

[0107] Optionally, the bottom cover 213 of the tank is provided with a water outlet 216. The water pump 30 is connected to the bottom cover 213. In this exemplary case, the connection method between the water pump 30 and the bottom cover 213 is simple and the connection is stable. Optionally, the tank body 211 is provided with a water outlet 216, and the water pump 30 is connected to the tank body 211. In this example, the tank body 211 can be arranged in a structure similar to a rectangle, so that the tank body 211 has an installation surface arranged in a plane for the water pump 30 to be connected to the tank body 211. Of course, the tank body 211 can also be arranged in a cylindrical structure, and a part of the tank body 211 is provided with an installation surface arranged in a plane for the water pump 30 to be connected to the tank body 211. It can be understood that the water outlet 216 is located at the lower part of the tank body 211 so that the hot water in the heating chamber 21a can flow outwards.

[0108] The water pump 30 has a water pump inlet 351. The water pump 30 is connected to the tank body 21, and the water pump inlet 351 is directly communicated with the water outlet 216; the second sealing ring 33 is clamped between the water pump 30 and the tank body 21 and is arranged around the outside of the water pump inlet 351 and the water outlet 216, playing a good sealing role and improving the sealing performance between the water pump 30 and the tank body 21. Specifically, the water pump 30 of the present application is directly connected to the tank body 21, and the water pump inlet 351 is directly communicated with the water outlet 216. First, the number of pipeline connection points is reduced, reducing the leakage risk. Second, the air bubbles in the pipeline can be reduced, reducing the risk of air blockage of the water pump 30.

[0109] Please refer to Figure 16 , in some of the embodiments, the water pump 30 includes a pump housing 30A1. The pump housing 30A1 is provided with a water pump inlet 351, and the outer side wall of the pump housing 30A1 is provided with a first annular limiting portion surrounding the periphery of the water pump inlet 351; wherein, the second sealing ring 33 is limited by the first annular limiting portion. The first annular limiting portion can relatively fix the second sealing ring 33, improving the sealing performance between the water pump 30 and the tank body 21.

[0110] Optionally, the first annular limiting portion is a first annular groove 361. The second sealing ring 33 is installed in the first annular groove 361 and partially protrudes outwards to abut against the tank body 21. Among them, the first annular groove 361 can be formed by inwardly recessing the outer wall surface of the pump housing 30A1, or two annular protruding portions can be protruded from the outer wall surface of the pump housing 30A1, and a first annular groove 361 is formed between the two annular protruding portions. In other embodiments, the first annular limiting portion can only include one annular protruding portion, and the second sealing ring 33 is elastically tensioned and sleeved on the outside of the annular protruding portion, or an annular groove is provided on the second sealing ring 33, and the annular protruding portion is embedded in the annular groove, so that the positioning of the second sealing ring 33 can also be realized. Here, the present application does not limit the specific connection form of the first annular limiting portion and the connection between the first annular limiting portion and the second sealing ring 33.

[0111] Please refer to Figure 15 and Figure 16 In some embodiments, the tank body 21 is provided with a first connection hole 21b, and the pump housing 30A1 is provided with a second connection hole 30A2; the first connection hole 21b and the second connection hole 30A2 are sequentially penetrated by a fastener to relatively fix the tank body 21 and the pump housing 30A1. Further, the present application further includes a third sealing ring 34, and the third sealing ring 34 is clamped between the tank body 21 and the pump housing 30A1 and is disposed around the first connection hole 21b and the second connection hole 30A2. In this example, connecting the tank body 21 and the pump housing 30A1 by a fastener can improve the connection stability between the water pump 30 and the tank body 21. Among them, the second connection hole 30A2 can be in the form of a threaded hole, and the fastener can be in the form of a screw member 28. The screw member 28 extends outward from the inside of the tank body 21 through the first connection hole 21b, then is penetrated and fixed in the second connection hole 30A2, and is threadedly connected to the second connection hole 30A2. This connection method has high stability and a simple installation method. Of course, in other embodiments, the tank body 21 and the pump housing 30A1 can also be connected by snap connection.

[0112] Please refer to Figure 16 In some embodiments, the outer side wall of the pump housing 30A1 is provided with a second annular limiting portion surrounding the circumferential side of the second connection hole 30A2, and the third sealing ring 34 is limited to the second annular limiting portion. The second annular limiting portion can relatively fix the third sealing ring 34 and improve the sealing performance between the water pump 30 and the tank body 21. In some embodiments, the second annular limiting portion is a second annular groove 362, and the third sealing ring 34 is installed in the second annular groove 362 and partially protrudes outward to abut against the tank body 21. Among them, the connection form of the second annular limiting portion and the connection between the second annular limiting portion and the third sealing ring 34 can be set with reference to the above-mentioned first annular limiting portion and the connection between the first annular limiting portion and the second sealing ring 33.

[0113] In some embodiments, the outer diameter of the water pump inlet 351 is smaller than the outer diameter of the water outlet 216. At least two opposite positioning portions 37 are provided on the top of the pump housing 30A1. The positioning portions 37 are located outside the water pump inlet 351, and the outer wall surface of the positioning portions 37 abuts against the inner wall of the water outlet 216 to ensure that the pump housing 30A1 and the tank body 21 are connected at the correct position, so as to improve the connection stability between the water pump inlet 351 and the water outlet 216.

[0114] Further, a guiding surface 371 and a limiting surface 372 which are connected in sequence from top to bottom are formed on the outer wall surface of the positioning portion 37. The guiding surface 371 extends towards the limiting surface 372, and the limiting surface 372 abuts against the inner wall of the water outlet 216. The guiding surface 371 can guide the positioning portion 37 to extend into the water outlet 216 during installation. When the installation is in place, the limiting surface 372 abuts against the inner wall surface of the water outlet 216.

[0115] Please refer to Figure 16 and Figure 17 , the pump housing 30A1 further includes a water pump outlet 352, and the hot water tank assembly 20 further includes a water outlet pipe 27. One end of the water outlet pipe 27 is communicated with the water pump outlet 352, and partially penetrates into the tank body 21 and extends out of the tank body 21. In this way, the water in the water outlet pipe 27 will be further heated by the water in the tank body 21 and then flow out to the outside, improving the water temperature of the first cup of water.

[0116] Please refer to Figures 18 to 21 , the water pump assembly includes a water pump 30 and a water inlet pipe 32. The water pump 30 is communicated with the water outlet 216 through the water inlet pipe 32; wherein, the water inlet pipe 32 is connected to the water outlet 216, and in the direction from the water pump 30 to the water outlet 216, the inner diameter of the water inlet pipe 32 increases to form a flared structure.

[0117] Specifically, the water outlet 216 is located at the lower part of the tank body 21, and the water inlet pipe 32 is communicated with the water outlet 216. The air bubbles in the water tend to move vertically upward. In this way, the possibility of inhaling air bubbles when the water pump 30 works can be reduced, and the risk of air blockage can be reduced. Moreover, the inner diameter of the water inlet pipe 32 increases in the direction close to the water outlet 216 to form a flared structure. Thus, the air bubbles generated during the heating process are more likely to utilize their vertically upward movement trend, flow along the water inlet pipe 32 and be discharged from the water inlet pipe 32 through the water outlet 216. In this way, the possibility of air bubbles accumulating in the pipeline can be effectively reduced, and further, the risk of the water pump 30 failing due to gas blockage (i.e., air blockage) can be significantly reduced. It can be understood that air blockage will not only reduce the pumping efficiency, but also may cause damage to the water pump 30, such as overheating and increased wear. By designing the inner diameter of the water inlet pipe 32 in this application, this structure not only does not increase additional complexity during actual production and installation, but also has a low processing cost, and at the same time effectively reduces the risk of air blockage.

[0118] When the water inlet pipe 32 is connected to the bottom cover 213 of the tank, at least the part of the water inlet pipe 32 close to the water outlet 216 extends upward, and the inner diameter is set to decrease from top to bottom. There is no obstacle surface during the rising process of the bubbles, and they can rise unobstructed under the action of the lifting force until they are discharged from the water inlet pipe 32. When the water inlet pipe 32 is connected to the tank body 211, it can be understood that during the vertical upward movement of the bubbles, their buoyancy is vertically upward. When the bubbles are blocked by the upper wall surface of the water inlet pipe 32, since the water inlet pipe 32 has a flared structure and its upper wall surface is inclined upward and connected to the water outlet 216, during the force analysis, the vertically upward buoyancy of the bubbles will generate a component inclined towards the water outlet 216. In this way, the bubbles can be more easily discharged along the water inlet pipe 32 through the water outlet 216 and are not likely to enter the water pump 30.

[0119] Please refer to Figure 20 and Figure 21 , in some of the embodiments, the water inlet pipe 32 includes a first pipe section 321, a second pipe section 323, and an arc transition section 322. The first pipe section 321 is connected to the water outlet 216 and extends upward, and the inner diameter of the first pipe section 321 is set to decrease from top to bottom.

[0120] One end of the second pipe section 323 is connected to the end of the arc transition section 322 far from the first pipe section 321, and the other end of the second pipe section 323 communicates with the water pump 30; the opposite sides of the arc transition section 322 are respectively connected to the first pipe section 321 and the second pipe section 323; wherein, the center line of the arc transition section 322 is arc-shaped, the center line of the second pipe section 323 and the center line of the first pipe section 321 are arranged at an angle, and the water pump inlet 351 where the water pump 30 is connected to the second pipe section 323 faces horizontally or obliquely upward. Specifically, in order to adapt to the installation environment or installation space, the water pump 30 needs to be placed horizontally or slightly inclined. At this time, the water inlet pipe 32 may further include an arc transition section 322 and a second pipe section 323. The center line of the second pipe section 323 and the center line of the first pipe section 321 are arranged at an angle, and the arc transition section 322 is for the water flow to make a good transition between these two pipe sections. In the direction of the water flow, the inner diameter of the arc transition section 322 is set to decrease, that is, the inner diameter of the arc transition section 322 decreases in the direction from the water outlet 216 to the water pump 30. In this way, a guiding surface will be formed on the inner surface of the arc transition section 322, and the bubbles can rise along the inner surface of the arc transition section 322 during the rising process, reducing the risk of air blockage.

[0121] Please refer to Figure 21, in some embodiments, the water pump 30 includes a water inlet portion 35. The water inlet portion 35 extends outward from the main body of the water pump 30 and has a water pump inlet 351. The water inlet portion 35 extends into the interior of the second pipe section 323, and the water pump inlet 351 on the water inlet portion 35 is located at the corner between the arc transition section 322 and the second pipe section 323. In this way, the water pump inlet 351 can be as close as possible to the first pipe section 321. It can be understood that in order to adapt to the installation space inside the housing, some water pumps 30 need to be placed horizontally or slightly inclined. There is no obstacle surface above the air bubbles in the first pipe section 321 and the arc transition section 322, and they can rise directly. Inserting the water inlet portion 35 into the second pipe section 323 can prevent gas from accumulating in the second pipe section 323 and reduce the risk of air blockage. Optionally, the first pipe section 321 extends in the vertical direction, and the center line of the first pipe section 321 is perpendicularly arranged to the center line of the second pipe section 323. In this way, it can meet the installation requirement that the water pump 30 needs to be placed horizontally.

[0122] Please refer to Figure 21 , optionally, the inner diameter of the water inlet portion 35 is set to decrease in the direction close to the water pump 30 at the water outlet 216. In this way, a guiding inclined surface can be formed on the inner diameter of the water inlet portion 35, which is gradually inclined upward from the inside to the outside of the water inlet portion 35, preventing air bubbles from accumulating in the water inlet portion 35.

[0123] Please refer to Figure 21 , in some embodiments, the tank body 211, the tank top cover 212 and the tank bottom cover 213. The tank body 211 has a cylindrical structure. The tank top cover 212 is arranged at the top of the tank body 211, and the tank bottom cover 213 is arranged at the bottom of the tank body 211. The three cooperate to form a heating chamber 21a. The tank top cover 212 is provided with a water inlet 214 communicating with the above-mentioned water supply pipeline 204, a water return port 219 communicating with the return pipeline 202, and an exhaust port 215 communicating with the exhaust pipeline 205; the tank bottom cover 213 is provided with a water outlet 216. The hot tank assembly 20 further includes a connecting water pipe 218. The connecting water pipe 218 is connected to the tank bottom cover 213 and communicates with the water outlet 216. The connecting water pipe 218 extends in the vertical direction, and the drainage end of the connecting water pipe 218 is connected to the first pipe section 321. By connecting the connecting water pipe 218 to the water outlet 216 of the tank bottom cover 213, making it extend vertically upward and finally connecting to the first pipe section 321, the connection process between the water inlet pipe 32 and the tank body 21 is simplified. Moreover, the water outlet 216 is directly arranged on the tank bottom cover 213. Compared with the form of opening the water outlet 216 on the side or top of the tank body 21, setting the water outlet 216 on the tank bottom cover 213 makes the processing and assembly operations easier.

[0124] Please refer to Figure 20 and Figure 21, in some embodiments, the connecting water pipe 218 extends into the tank body 21, and in the height direction, the water inlet end of the connecting water pipe 218 is higher than the bottom cover 213 of the tank. In this example, the water outlet 216 provided on the bottom cover 213 is in the form of an installation pipe orifice, and the pipe orifice where the connecting water pipe 218 extends into the heating chamber 21a in the tank body 21 is the water outlet 216 of the hot tank assembly 20. Since the water inlet end of the connecting water pipe 218 is higher than the bottom cover 213, generally, the heating element 22 is arranged in the middle of the tank body 21, and the bottom cover 213 will be far away from the heating element 22, which is likely to cause water temperature stratification, that is, the water temperature near the bottom cover 213 will be relatively low. In this application, the water inlet end of the connecting water pipe 218 is higher than the bottom cover 213, so that the water inlet end of the connecting water pipe 218 is relatively close to the heating element 22, so as to directly obtain a water area with a relatively high temperature that is greatly affected by the heating element 22. In this way, even if the water temperature near the bottom cover 213 is relatively low, it will not affect the temperature of the water taken out through the connecting water pipe 218.

[0125] Please refer to Figure 20 , in some embodiments, the height difference between the water inlet end of the connecting water pipe 218 and the bottom cover 213 is H, and H satisfies: 5mm ≤ H ≤ 10mm. In this way, the water outlet 216 can be closer to the heating element 22, so that the water temperature drawn by the water pump 30 can be relatively high, and then the temperature of the first glass of water taken by the user can be increased. And it enables the user to take as much hot water in the heating chamber 21a as possible, which can improve the utilization rate of the hot water in the heating chamber 21a.

[0126] If H < 5mm, it will cause the water inlet end of the connecting water pipe 218 to be far away from the heating element 22, resulting in a relatively low water temperature drawn by the water pump 30 and a relatively low temperature of the first glass of water taken by the user.

[0127] If H > 10mm, it will cause the water inlet end of the connecting water pipe 218 to be relatively high. After the user takes the hot water in the upper part of the tank body 21, there is still a lot of hot water remaining in the lower part of the heating chamber 21a, resulting in a relatively low utilization rate of the hot water in the heating chamber 21a and easy waste of resources.

[0128] Please refer to Figure 20 , further, in the height direction, the heating element 22 is located in the lower part of the tank body 21 and is arranged close to the bottom cover 213; wherein, the heating element 22 is arranged around the outer periphery of the water inlet end of the connecting water pipe 218. The heating element 22 is located in the lower part of the tank body 21 and close to the bottom cover 213, so as to directly heat the bottom of the water body in the tank body 21. Since heat usually transfers from bottom to top, this layout can more effectively increase the overall water temperature and ensure uniform heating of the water body.

[0129] Further, in some embodiments, the integrated net heat machine 1 further includes a controller, a first temperature sensor, and a second temperature sensor. The filtration system 50 includes a purified water pipe communicating with the outlet of the filter element. Both the purified water pipe and the water outlet pipe communicating with the water outlet 216 of the tank body 21 are connected to the faucet 2. Among them, the first temperature sensor is used to detect the temperature in the heating chamber 21a, the second temperature sensor is used to detect the temperature in the pure water pipeline of the filtration system 50, and the controller is used to receive the detection values of the first temperature sensor and the second temperature sensor, and control the operating power of the water pump 30 and the booster pump 53 to form water with a set temperature value at the faucet 2. Through the coordinated work of the first temperature sensor and the second temperature sensor, the controller can accurately adjust the water temperature in the heating chamber 21a and the mixing ratio of cold and hot water, ensuring the stability and accuracy of the water outlet temperature at the faucet 2, avoiding the problems of too high or too low water temperature, and improving the safety and comfort of use. In addition, the controller dynamically adjusts the operating power of the water pump 30 and the booster pump 5, which can optimize the energy consumption according to the actual water use demand, reduce unnecessary energy waste, and thus improve the energy efficiency and economy of the system.

[0130] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0131] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot water system, characterized in that: include: A hot tank assembly comprises a tank body and a heating element, wherein the heating element is mounted on the tank body, the tank body has a water outlet and a water return port, wherein the tank body has a length direction, and the heating element extends along the length direction of the tank body; A hot water pipeline, the water inlet end of the hot water pipeline is connected to the water outlet; A water pump assembly, arranged on the hot water pipeline, for pumping the water in the tank to flow out through the water outlet to the water outlet end of the hot water pipeline; a return pipeline, connected to the hot water pipeline and the water return port, the return pipeline being connected to the hot water pipeline at a position downstream of the water pump assembly; and The flow control component is used to adjust the water flow rate of the return pipeline.

2. The hot water system according to claim 1, characterized in that: The flow control member is a flow limiting plug; Alternatively, the flow control element is a reversing valve, which is arranged at the connection between the water inlet end of the return pipeline and the hot water pipeline, and allows the water in the tank to flow selectively to the return pipeline or the water outlet end of the hot water pipeline; Alternatively, the flow control element comprises: A first solenoid valve, selectively connecting the water outlet of the water pump assembly and the water return port; as well as The second solenoid valve can selectively connect the water outlet end of the water pump assembly and the water outlet end of the hot water pipeline.

3. The hot water system according to claim 1 or 2, characterized in that: The water pump assembly comprises a water pump, the water pump has a water pump inlet, the water pump is connected to the tank body, and the water pump inlet is directly connected to the water outlet; The hot water system also includes: The second sealing ring is sandwiched between the water pump and the tank body and is arranged around the outer sides of the water pump inlet and the water outlet.

4. The hot water system according to claim 3, characterized in that: The water pump comprises: A pump housing is provided with the water pump inlet, and an outer side wall of the pump housing is provided with a first annular limiting portion surrounding the circumference of the water pump inlet; Wherein, the second sealing ring is limited to the first annular limiting portion.

5. The hot water system according to claim 4, characterized in that: The first annular limiting portion is a first annular groove, and the second sealing ring is installed in the first annular groove and partially protrudes outward to abut against the tank body.

6. The hot water system according to claim 4, characterized in that: The tank body is provided with a first connecting hole, and the pump housing is provided with a second connecting hole; The first connection hole and the second connection hole are sequentially penetrated by a fastener to relatively fix the tank body and the pump housing.

7. The hot water system according to claim 6, characterized in that It also includes a third sealing ring, which is sandwiched between the tank body and the pump housing and is arranged around the first connecting hole and the second connecting hole.

8. The hot water system according to claim 7, characterized in that The outer side wall of the pump housing is provided with a second annular limiting portion surrounding the circumference of the second connecting hole, and the third sealing ring is limited to the second annular limiting portion.

9. The hot water system according to claim 8, characterized in that The second annular limiting portion is a second annular groove, and the third sealing ring is installed in the second annular groove and partially protrudes outward to abut against the tank body.

10. The hot water system according to claim 4, characterized in that The outer diameter of the water pump inlet is smaller than the outer diameter of the water outlet. The top of the pump housing is provided with at least two oppositely arranged positioning parts, the positioning parts are located outside the water pump inlet, and the outer wall surface of the positioning parts abuts against the inner wall of the water outlet.

11. The hot water system according to claim 10, characterized in that The outer wall surface of the positioning portion is formed with a guide surface and a limit surface which are sequentially connected from top to bottom. In the direction away from the water outlet, the guide surface smoothly transitions from top to bottom to the limit surface, and the limit surface abuts against the inner wall of the water outlet.

12. The hot water system according to claim 1 or 2, characterized in that: The water pump assembly comprises a water pump and a water inlet pipe, and the water pump is connected to the water outlet through the water inlet pipe; Wherein, the water inlet pipe is connected to the water outlet, and in the direction from the water pump to the water outlet, the inner diameter of the water inlet pipe is increased to form a flared structure.

13. The hot water system according to claim 12, characterized in that At least the portion of the water inlet pipe close to the water outlet has an upward extension trend, and the inner diameter is reduced from top to bottom.

14. The hot water system according to claim 13, characterized in that The water inlet pipe comprises: A first pipe section, one end of which is connected to the water outlet and the inner diameter of which is reduced from top to bottom; an arc-shaped transition section connected to an end of the first pipe section away from the water outlet; and A second pipe section is connected to one end of the arc-shaped transition section away from the first pipe section, and the other end of the second pipe section is connected to the water pump; The center line of the second pipe segment is arranged at an angle with the center line of the first pipe segment, and the water pump has a water pump inlet connected to the second pipe segment, and the water pump inlet is oriented horizontally or obliquely upward.

15. The hot water system according to claim 14, characterized in that The inner diameter of the arc-shaped transition section is reduced in the direction in which the water outlet approaches the water pump.

16. The hot water system according to claim 14, characterized in that The water pump comprises: The water inlet has the water pump inlet, the water inlet extends outward from the main body of the water pump, the water inlet extends into the interior of the second pipe section, and the water pump inlet on the water inlet is located at the corner between the arc-shaped transition section and the second pipe section.

17. The hot water system according to claim 16, characterized in that The inner diameter of the water inlet portion is reduced in the direction in which the water outlet approaches the water pump.

18. A heat and air conditioning machine, characterized in that: include: Shell assembly; A hot water system as claimed in any one of claims 1 to 17, mounted in said housing assembly; as well as A filtering system is installed in the shell assembly, and the filtering system is communicated with the hot water system.

19. The integrated heat and air conditioning machine according to claim 18, characterized in that: The heat and air purifier also includes a controller, a first temperature sensor, a second temperature sensor and a faucet. The filtration system includes a booster pump, a filter element and a purified water pipe connected to the outlet of the filter element. The purified water pipe and the water outlet pipe connected to the water outlet are both connected to the faucet. Among them, the first temperature sensor is used to detect the temperature in the heating chamber, the second temperature sensor is used to detect the temperature of the pure water in the purified water pipe, and the controller is used to receive the detection values ​​of the first temperature sensor and the second temperature sensor, and control the operating power of the water pump and the booster pump to form water with a set temperature value at the faucet.

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