Hot tank assembly and purifying and heating all-in-one machine

Abstract

The hot tank assembly comprises a tank body, a heating piece, a water suction pump, a backflow pipe and a reversing valve, and the tank body is provided with a heating cavity, a water inlet and a water outlet, the heating piece is mounted on the tank body and is used for heating water in the heating cavity; a water pumping port of the water pump is communicated with the water outlet; the hot water outlet pipe is communicated with a water outlet of the water suction pump and is used for discharging water in the heating cavity to the outside; one end of the return pipe is connected with the hot water outlet pipe, and the other end is communicated with the heating cavity; the reversing valve is connected to the joint of the backflow pipe and the hot water outlet pipe and used for selectively controlling the hot water outlet pipe and the backflow pipe to be communicated or the hot water outlet pipe and the outside to be communicated. According to the hot tank assembly, the problem that in the prior art, due to the fact that low-temperature water at the bottom of the hot tank is pumped out, the temperature of the first cup of water is too low can be effectively solved, it is ensured that a user can obtain hot water with the expected temperature when receiving the first cup of water, and the user experience is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification equipment, in particular to a hot tank assembly and a water purification and heating integrated machine provided with the same. BACKGROUND

[0002] In the related art, the water purification and heating integrated machine is a water purification equipment integrating water purification and heating functions. When a user takes the first cup of water, the water at the bottom of the hot tank has not been fully heated, and the water temperature is still low, which does not meet the user's expectation of taking hot water and affects the user's experience. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a hot tank assembly and a water purification and heating integrated machine, aiming to solve the problem of low water temperature of the first cup of water of the existing water purification and heating integrated machine.

[0004] In order to achieve the above purpose, the present application provides a hot tank assembly, comprising:

[0005] a tank body having a heating cavity and a water inlet and a water outlet respectively communicating with the heating cavity;

[0006] a heating member installed on the tank body for heating water in the heating cavity;

[0007] a water pump, a water suction port of which communicates with the water outlet;

[0008] a hot water outlet pipe communicating with a water discharge port of the water pump for discharging water in the heating cavity to the outside;

[0009] a reflux pipe, one end of which is connected with the hot water outlet pipe and the other end of which communicates with the heating cavity; and

[0010] a reversing valve connected at the connection of the reflux pipe and the hot water outlet pipe, the reversing valve being used to selectively control the hot water outlet pipe and the reflux pipe to be conducted or the hot water outlet pipe and the outside to be conducted.

[0011] In some embodiments, the hot water outlet pipe comprises a main flow section and a branch flow section connected with each other, and the reflux pipe is connected at the connection of the main flow section and the branch flow section;

[0012] the reversing valve is used to selectively control the main flow section and the reflux pipe to be conducted or the main flow section and the branch flow section to be conducted.

[0013] In some embodiments, the tank body comprises a tank body, a tank top cover and a tank bottom cover, the tank body is connected with the tank top cover and the tank bottom cover respectively, the three enclose to form the heating cavity, the heating member is arranged in the heating cavity and extends towards the tank bottom cover without contacting the tank bottom cover.

[0014] In some embodiments, the water outlet is arranged on the tank body, and the water outlet is at least partially coincident with the heating element in the height direction.

[0015] In some embodiments, the heating element is arranged in a spiral shape, and two ends of the spiral heating element are parallel to each other, and the two ends extend out of the tank body and are mounted on the same busbar of the tank body.

[0016] In some embodiments, the center line of the spiral heating element is coincident with the center axis of the tank body.

[0017] In some embodiments, the hot tank assembly further comprises a detection assembly for detecting the water level in the heating cavity, and the detection assembly comprises a high water level probe and a low water level probe, and the high water level probe and the low water level probe are arranged at intervals on the tank top cover and extend into the heating cavity towards the tank bottom cover.

[0018] In some embodiments, the end of the high water level probe is higher than the heating element, and the end of the low water level probe is lower than the highest position of the heating element.

[0019] In some embodiments, further comprising an exhaust pipe and a condensing pipe, the exhaust pipe is connected to the tank top cover and communicates with the heating cavity, and the condensing pipe has a condensing cavity, and the exhaust pipe is arranged in the condensing cavity.

[0020] In some embodiments, the condensing pipe further has a water inlet connector and a water outlet connector respectively communicating with the condensing cavity, and the water outlet connector communicates with the water inlet.

[0021] In some embodiments, the water outlet connector is higher than the water inlet connector and is diagonally arranged with the water inlet connector.

[0022] The second aspect of the embodiments of the present application provides a heat and water purification integrated machine, comprising:

[0023] A shell assembly having a hot tank cavity and a filter core cavity;

[0024] A filter assembly mounted in the filter core cavity and having a raw water inlet and a pure water outlet; and

[0025] A hot tank assembly as described above mounted in the hot tank cavity, and the water inlet communicates with the pure water outlet.

[0026] In some embodiments, the filter assembly comprises:

[0027] A filter core having a raw water inlet and a pure water outlet;

[0028] A pure water outlet pipe connected to the pure water outlet;

[0029] The net heat all-in-one machine further comprises:

[0030] A booster pump connected to the pure water outlet pipe;

[0031] A faucet connected to the pure water outlet pipe and the hot water outlet pipe;

[0032] A first temperature sensor for detecting the temperature in the heating cavity;

[0033] A second temperature sensor for detecting the temperature in the pure water outlet pipe; and

[0034] A controller for receiving the detection values of the first temperature sensor and the second temperature sensor, and controlling the operating power of the water pump and the booster pump, so as to form water at a set temperature value at the faucet.

[0035] In the hot tank assembly provided by the embodiments of the present application, when the hot tank assembly is in a heating mode or a heat preservation mode, the reversing valve controls the hot water outlet pipe and the return pipe to be conductive, and the water with a lower temperature at the bottom of the heating cavity is sequentially transported back to the top of the heating cavity through the hot water outlet pipe and the return pipe. In this way, the water in the heating cavity forms an internal circulation flow, so that the low-temperature water at the bottom enters the heating area again, promoting the uniformization of the water temperature in the heating cavity. When the user takes hot water, the reversing valve controls the hot water outlet pipe and the outside to be conductive. Due to the return circulation in the heating or heat preservation mode, the water at the bottom of the heating cavity has been sufficiently heated, thereby effectively avoiding the problem that the temperature of the first cup of water is too low due to the pumping of low-temperature water at the bottom of the hot tank in the conventional technology, ensuring that the user can obtain hot water with a temperature meeting the expectation when taking the first cup of water, and significantly improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0037] Figure 1 The internal structure diagram of the net heat all-in-one machine provided by the embodiments of the present application;

[0038] Figure 2 The structure diagram of the hot tank assembly provided by the embodiments of the present application;

[0039] Figure 3 The internal structure diagram of the hot tank assembly provided by the embodiments of the present application;

[0040] Figure 4 A water path schematic diagram of the hot tank assembly provided by the embodiment of the present application;

[0041] Figure 5 A structure schematic diagram of the exhaust pipe and the condensing pipe provided by the embodiment of the present application;

[0042] Figure 6 An internal structure schematic diagram of the exhaust pipe and the condensing pipe provided by the embodiment of the present application.

[0043] Explanation of the reference signs:

[0044] 10, housing assembly; 101, filter core cavity; 102, hot tank cavity; 1021, air inlet; 1022, air outlet; 20, hot tank assembly; 21, tank body; 211, tank body; 212, tank top cover; 213, tank bottom cover; 201, heating cavity; 214, water inlet; 216, water outlet; 22, heating element; 23, detection assembly; 233, high water level probe; 234, low water level probe; 24, exhaust pipe; 25, return pipe; 27, hot water outlet pipe; 271, main flow section; 272, branch flow section; 28, condensing pipe; 280, condensing cavity; 281, water inlet joint; 282, water outlet joint; 29, reversing valve; 30, water pump; 50, filter assembly.

[0045] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the accompanying drawings.

[0047] The following description relates 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 the embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0048] In the description of the present application, it is understood that the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A, the existence of A and B, and the existence of B. The character " / " generally represents the "or" relationship between the front and rear associated objects.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0050] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present application, and for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] The embodiments of the present application provide a hot tank assembly and a heat purification integrated machine, which can solve the problem of low water temperature of the first cup of water of the existing heat purification integrated machine, so as to improve the user experience.

[0052] Specifically, please refer to Figures 1 to 4 , Figure 1 the internal structure schematic diagram of the heat purification integrated machine provided by the embodiments of the present application; Figure 2 the structure schematic diagram of the hot tank assembly provided by the embodiments of the present application; Figure 3 the internal structure schematic diagram of the hot tank assembly provided by the embodiments of the present application; Figure 4 the waterway schematic diagram of the hot tank assembly provided by the embodiments of the present application.

[0053] The heat purification integrated machine of the embodiments can be a household heat purification integrated machine, such as a kitchen-under heat purification integrated machine.

[0054] The heat purification integrated machine of the embodiments includes a shell assembly 10, a filter assembly 50 and a hot tank assembly 20.

[0055] The shell assembly 10 is the external support structure of the heat purification integrated machine, which can include an outer shell. The shape of the outer shell can be a regular geometric shape, such as a cube or a cuboid, etc. Such regular shape has many advantages: on the one hand, the regular shape facilitates the mold making and the standardized assembly of parts during the production and manufacturing process, which can effectively improve the production efficiency and reduce the production cost; on the other hand, in the installation and use scene, the regular shape of the outer shell is easier to adapt to the surrounding environment, whether it is placed in the kitchen cabinet or other specific use position, it can be placed more regularly, saving space and elegant.

[0056] The shell assembly 10 is internally formed with two chambers, namely a hot tank chamber 102 and a filter core chamber 101. The hot tank chamber 102 is mainly used for accommodating the hot tank assembly 20, providing a stable installation space for the hot tank assembly 20, and ensuring the stability of the hot tank assembly 20 during heating, heat preservation and other working processes. The filter core chamber 101 is used for accommodating the filter assembly 50. The two chambers are relatively independent, which can avoid mutual interference between different hot tank assemblies 20 and filter assemblies 50, and also facilitates subsequent maintenance, repair or replacement of each assembly.

[0057] The shell assembly 10, as the external support and protection structure of the entire hot tank assembly 20, has functions such as the hot tank chamber 102 and the filter core chamber 101, and in this embodiment, also has a heat dissipation function to ensure that the internal hot tank assembly 20 and other components can be stably installed and work in a normal temperature environment.

[0058] Exemplarily, the shell assembly 10 also has an air inlet 1021 and an air outlet 1022 respectively communicating with the hot tank chamber 102, and the air inlet 1021, the hot tank chamber 102 and the air outlet 1022 together constitute a cooling air duct. The air inlet 1021 is arranged at the bottom of the outer shell, and the air inlet 1021 communicates with the bottom of the hot tank chamber 102, so that the cold air from the outside can smoothly enter the area where the hot tank chamber 102 is located from the bottom of the equipment. The air outlet 1022 is arranged at the top of the outer shell and communicates with the top of the hot tank chamber 102, which facilitates the hot air generated by the hot tank assembly 20 during operation to be discharged from the air outlet 1022 at the top under the action of thermal buoyancy. The layout of the entire cooling air duct forms a heat convection channel, cold air enters from the bottom air inlet 1021, flows through the hot tank assembly 20, becomes hot air after absorbing heat, and is then discharged from the top air outlet 1022, thereby effectively taking away the heat emitted by the hot tank assembly 20, maintaining the hot tank assembly 20 and its surrounding environment within a relatively suitable temperature range, and ensuring the normal operation of the equipment.

[0059] The filter assembly 50 of this embodiment is installed in the filter core chamber 101, and the filter assembly 50 is provided with a raw water inlet and a pure water outlet. The raw water inlet can be directly connected with an external tap water supply pipeline and is an inlet for tap water to enter the heat and water purification integrated machine for filtration. The pure water outlet communicates with the water inlet 214 of the hot tank assembly 20, so that the filtered pure water can smoothly flow into the hot tank assembly 20 for subsequent heating or heat preservation operation, or be directly supplied to the user through the water faucet.

[0060] The filter assembly 50 in this embodiment has a multi-stage filtering function, which can include PAC (polyaluminum chloride) filtering and RO (reverse osmosis) filtering. The PAC filtering serves as a pre-filtering link and uses the flocculation of PAC to enable the suspended particles, colloids and other impurities in tap water to be aggregated into larger flocculent substances, which are convenient for subsequent filtering and removal. The PAC filtering can effectively intercept the large-particle impurities such as silt and rust in water, reduce the burden of subsequent RO filtering, and prolong the service life of the RO membrane.

[0061] The RO filtering is the core link in the entire filtering process. The RO reverse osmosis membrane has an extremely small pore size and can only allow water molecules to pass through under pressure driving, while retaining most of the impurities such as bacteria, viruses and heavy metal ions in water, thereby obtaining pure water with extremely high purity. Through the synergistic effect of the two-stage filtering, it is ensured that the water flowing out of the pure water outlet of the filter assembly 50 reaches a very high degree of purity, meeting the user's requirements for healthy and high-quality drinking water.

[0062] In the filtering process, due to the filtering characteristics of the RO reverse osmosis membrane, a small amount of waste water will be generated after the tap water is filtered, which is discharged through the waste water outlet provided on the filter assembly 50.

[0063] The hot tank assembly 20 in this embodiment is a key part of the water purifier and can solve the problem of low temperature of the first cup of water and improve the user experience.

[0064] Specifically, the hot tank assembly 20 includes a tank body 21, a heating element 22, a water pump 30, a hot water outlet pipe 27, a backflow pipe 25 and a reversing valve 29. The tank body 21 has a long cylindrical structure with an axial dimension greater than a radial dimension. The long cylindrical tank body 21 has many advantages. From the perspective of space utilization, it has a certain extension length in the vertical direction, which can increase the internal water storage volume on the basis of limited planar floor area, thereby meeting the demand for a certain amount of hot water supply and being suitable for application in various devices with certain space layout requirements, such as the water purifier installed in the kitchen cabinet. From the perspective of heat transfer, the long cylindrical structure enables the water in the tank body 21 to form a relatively stable stratification, which is conducive to the relatively uniform conduction of heat in the vertical direction, and compared with some irregular or short and thick tank body 21 structures, it can reduce the local heat accumulation or heat transfer dead angle.

[0065] In one of the embodiments, the tank body 21 comprises a tank body 211, a tank top cover 212 and a tank bottom cover 213, the tank body 211 is connected with the tank top cover 212 and the tank bottom cover 213 respectively, and the three together enclose the heating cavity 201. Among them, the tank body 211 constitutes the side of the tank body 21, the tank top cover 212 constitutes the top of the tank body 21, and the tank bottom cover 213 constitutes the bottom of the tank body 21. Among the tank body 211, the tank top cover 212 and the tank bottom cover 213, the three parts can be processed respectively by a suitable process, for example, the tank body 211 can be formed by a rolling process, and the tank top cover 212 and the tank bottom cover 213 are made by stamping process, and then sealed and connected, which not only ensures the overall structural strength of the tank body 21, but also improves the efficiency and reduces the cost in the production process.

[0066] The tank body 21 is provided with a water inlet 214 and a water outlet 216 respectively communicating with the heating cavity 201. The water inlet 214 is used to introduce the external pre-processed water (such as filtered pure water) into the heating cavity 201, and its position can be arranged on the tank top cover 212 to ensure that the entering water is first distributed in the upper layer of hot water, thereby reducing the influence on the middle and lower layers of water in the heating cavity 201. While the water outlet 216 can be arranged on the tank bottom cover 213 or the tank body 211.

[0067] The heating element 22 of the embodiment is installed in the tank body 21 and used to heat the water in the heating cavity 201. The heating element 22 can be a heating wire, an electric heating tube, a heating rod, etc.

[0068] The water pump 30 plays a key role in the whole hot water taking and backflow process of the hot tank assembly 20. It can provide power for the taking and backflow of hot water, and ensure that the water can flow out of the heating cavity 201 smoothly for the user to take and use.

[0069] The water inlet of the water pump 30 communicates with the water outlet 216, and the water outlet of the water pump 30 communicates with the hot water outlet pipe 27. In this way, the heated hot water in the heating cavity 201 can enter the hot water outlet pipe 27 smoothly under the action of the water pump 30, and then flow to the subsequent water taking link or backflow link.

[0070] The hot water outlet pipe 27 communicates with the water outlet of the water pump 30, and is used to discharge the water pumped out by the water pump 30 to the outside for the user to use. At the same time, in the internal circulation process of the hot tank assembly 20, the hot water outlet pipe 27 is also one of the channels for the water to backflow to the heating cavity 201.

[0071] One end of the backflow pipe 25 is connected with the hot water outlet pipe 27, and the other end communicates with the heating cavity 201. When the hot tank assembly 20 is in heating mode or heat preservation mode, the backflow pipe 25 provides a path for the water at the bottom of the heating cavity 201 to backflow to the top of the heating cavity 201, promotes the circulation flow of the water in the heating cavity 201, and makes the water temperature more uniform.

[0072] The reversing valve 29 is connected to the connection between the return pipe 25 and the hot water outlet pipe 27, and has an important control function of selectively controlling the hot water outlet pipe 27 and the return pipe 25 to be connected or the hot water outlet pipe 27 and the outside to be connected. Specifically, when the hot tank assembly 20 is in the heating mode or the heat preservation mode, the reversing valve 29 controls the hot water outlet pipe 27 and the return pipe 25 to be connected, so that the low-temperature water at the bottom of the heating cavity 201 is sequentially transported back to the top of the heating cavity 201 through the hot water outlet pipe 27 and the return pipe 25, forming an internal circulation. When the user takes hot water, the reversing valve 29 controls the hot water outlet pipe 27 and the outside to be connected, ensuring that the user can obtain hot water that is sufficiently heated and has a temperature meeting the expectation.

[0073] In this embodiment, when the hot tank assembly 20 is in the heating mode or the heat preservation mode, the reversing valve 29 controls the hot water outlet pipe 27 and the return pipe 25 to be connected. At this time, the heating element 22 heats the water in the heating cavity 201. Since the water at the bottom of the hot tank is heated slowly at the initial stage, the water pump 30 pumps out the water at the bottom of the heating cavity 201 through the water outlet 216, transports it to the return pipe 25 through the hot water outlet pipe 27, and then returns it to the top of the heating cavity 201 through the return pipe 25. In this way, the water in the heating cavity 201 forms an internal circulation, and the low-temperature water at the bottom is continuously transported to the heating area, promoting the uniformization of the water temperature in the heating cavity 201 and improving the heating efficiency and the heat preservation effect.

[0074] When the user needs to take hot water, the reversing valve 29 controls the hot water outlet pipe 27 and the outside to be connected. Due to the return circulation in the heating or heat preservation mode, the water at the bottom of the heating cavity 201 has been sufficiently heated, and the water flowing out of the hot water outlet pipe 27 can meet the user's demand for water temperature at this time, effectively avoiding the problem in the prior art that the first cup of water is too low in temperature due to the pumping out of the low-temperature water at the bottom of the hot tank, ensuring that the user can obtain hot water meeting the expectation in temperature when taking the first cup of water, and significantly improving the user experience.

[0075] Further, the hot water outlet pipe 27 includes a main flow section 271 and a branch flow section 272 connected to each other. The return pipe 25 is connected to the connection between the main flow section 271 and the branch flow section 272, and this connection position is crucial, as it provides a node for the return of the low-temperature water at the bottom of the heating cavity 201, so that the water can be smoothly divided from the main flow section 271 to the return pipe 25 and then back to the top of the heating cavity 201 in the circulation process.

[0076] One end of the return pipe 25 is connected at the joint of the main flow section 271 and the branch flow section 272 of the hot water outlet pipe 27, and the other end is in communication with the heating cavity 201. The reversing valve 29 is connected at the joint of the return pipe 25 and the hot water outlet pipe 27, and can selectively control the main flow section 271 and the return pipe 25 to be in conduction, or control the main flow section 271 and the branch flow section 272 to be in conduction. Specifically, when the hot tank assembly 20 is in the heating mode or the heat preservation mode, the reversing valve 29 causes the main flow section 271 and the return pipe 25 to be in conduction, at which time the low-temperature water at the bottom of the heating cavity 201, under the action of the water pump 30, sequentially passes through the water outlet 216, the main flow section 271 of the hot water outlet pipe 27, the return pipe 25, and finally returns to the top of the heating cavity 201, realizing the circulating heating of the water and promoting the water temperature in the heating cavity 201 to be uniform. When the user needs to take hot water, the reversing valve 29 is actuated to control the main flow section 271 and the branch flow section 272 to be in conduction, at which time the water that has been sufficiently heated flows from the main flow section 271 into the branch flow section 272, and is then discharged to the outside through the branch flow section 272 for the user to use, ensuring that the user obtains hot water with a suitable temperature.

[0077] In one of the embodiments, the water outlet 216 is provided on the tank body 211, and the water outlet 216 at least partially overlaps the heating element 22 in the height direction. Exemplarily, the water outlet 216 is provided on the tank body 211, and the water suction port of the water pump 30 is connected to the water outlet 216 through a water pipe. The water pump 30 is fixed to the shell assembly 10, and the fixing manner can be through bolt or screw connection. Alternatively, the water pump 30 forms a water suction port shell that is directly connected and fixed to the tank body 211 at the water outlet 216, and the water suction port of the water pump 30 and the water outlet 216 do not need to be connected through a water pipe. In this way, when water flows out of the water outlet 216, the water has already been in the region that has been sufficiently heated, ensuring that the outflowing hot water has a high temperature.

[0078] In one of the embodiments, the heating element 22 is provided in the heating cavity 201 and extends towards the tank bottom cover 213 without contacting the tank bottom cover 213. In the heating process of the hot tank, the conventional heating method can cause the water at the bottom of the hot tank to be heated too slowly, because the heat needs to be gradually transmitted from the position where the heating element 22 is located to the water at the bottom of the hot tank, the distance is far and there is a certain time delay in heat transmission. In the present embodiment, the heating element 22 is arranged close to the tank bottom cover 213, which can make the heat be transmitted more directly and more quickly to the water at the bottom of the hot tank, significantly accelerating the heating speed of this part of water.

[0079] Further, the heating element 22 is arranged in a spiral shape, and the two ends of the spiral heating element 22 are parallel to each other and respectively extend out of the kettle body 211 and are mounted on the same busbar of the kettle body 211. The two ends can be respectively connected to the terminal, so as to realize the function of power supply, provide power for the heating element 22 to generate heat, and then heat the water in the heating cavity 201. The two ends are parallel to each other and are mounted on the same busbar of the kettle body 211, which means that they are located on a vertical plane. Such design has many benefits: first, the bottom of the spiral heating element 22 tends to approach the plane, so that the heating element 22 can be arranged as close to the kettle bottom cover 213 as possible. Because when the bottom approaches the plane, the distance between the heating element 22 and the kettle bottom cover 213 can be more uniform and stable to approach the water at the bottom of the kettle, so as to more efficiently transfer heat to the water at the bottom of the kettle, accelerate the heating speed of the water at the bottom of the kettle, solve the problem of slow heating of the water at the bottom in the traditional design, and further ensure the uniformity of the overall heating of the water in the kettle. Second, the two ends are located on the same busbar, which facilitates the installation of the heating element 22 on the kettle body 211. In the production and assembly process, the operator can more conveniently and accurately fix the heating element 22 on the kettle body 211 according to the clear installation position requirement of this rule, improve the production efficiency, and also help to ensure the stability of the installation of the heating element 22.

[0080] Further, the spiral center line of the heating element 22 coincides with the center axis of the kettle body 211. When the spiral center line of the heating element 22 coincides with the center axis of the kettle body 211, the heat generated by the heating element 22 can be symmetrically emitted to the surrounding water with the center of the kettle body 211 as the center of symmetry. In this way, the water at each position in the kettle can receive an equal amount of heat in a similar time, avoiding the situation of local water temperature being too high or too low due to uneven heating.

[0081] Please continue to refer to Figure 3 The kettle assembly 20 of the embodiment further comprises a detection assembly 23 for detecting the water level of the heating cavity 201, and the detection assembly 23 comprises a high water level probe 233 and a low water level probe 234. The high water level probe 233 and the low water level probe 234 are arranged at intervals on the kettle top cover 212 and extend into the heating cavity 201.

[0082] The high water level probe 233 and the low water level probe 234 are arranged in a spaced and independent manner on the tank top cover 212. In a humid environment, water is likely to form a water film on the surface of an object. If the distance between the probes is too close or the layout is unreasonable, the water film may cause a short circuit between the two probes, thereby affecting the accuracy and reliability of water level detection. By being arranged in a spaced and independent manner, the formation of a conductive path between the two probes by the water film can be effectively avoided, ensuring that they can accurately detect water level changes and improving the accuracy and stability of water level detection.

[0083] Further, the end of the high water level probe 233 is higher than the heating element 22, and the low water level probe 234 is lower than the highest position of the heating element 22. The above position design is mainly used to prevent the dry burning phenomenon of the hot tank assembly 20. When the water level rises to the position of the high water level probe 233, it indicates that the water in the heating cavity 201 has reached a high water level. At this time, the control system can reasonably control the water inlet operation according to the signal fed back by the high water level probe 233, to avoid excessive water overflow and the like. When the water level drops to the position of the low water level probe 234, it means that the water in the heating cavity 201 has reached a low level, close to the critical state that may cause the heating element 22 to dry burn. At this time, the low water level probe 234 will send a signal to the control system in time, and the control system will stop the heating work of the heating element 22 immediately after receiving the signal, thereby effectively preventing the heating element 22 from dry burning without water coverage, and protecting the safety of the heating element 22 and the entire hot tank assembly 20.

[0084] Please refer to Figure 2 、 Figure 5 and Figure 6 , Figure 5 for the structural schematic diagram of the exhaust pipe and the condensing pipe provided by the embodiment of the present application; Figure 6 for the internal structural schematic diagram of the exhaust pipe and the condensing pipe provided by the embodiment of the present application.

[0085] The hot tank assembly 20 further comprises an exhaust pipe 24 and a condensing pipe 28. The exhaust pipe 24 is connected to the tank top cover 212 and communicates with the heating cavity. During the heating process of the hot tank, high-temperature steam will be generated in the tank body 21. The high-temperature steam is discharged through the exhaust pipe 24 to maintain the pressure balance in the tank body 21, avoiding safety hazards or affecting the normal operation of the equipment due to excessive pressure.

[0086] The condensing pipe 28 of the embodiment has a condensing cavity 280, and the exhaust pipe 24 is arranged in the condensing cavity 280. Since the high-temperature steam generated by the heating process of the heat tank is discharged outward through the exhaust pipe 24, and the temperature of the high-temperature steam is relatively high, if the high-temperature steam is directly discharged, it is easy to cause scalding hidden danger and bring safety risk to the user. The embodiment is provided with the condensing pipe 28, and the high-temperature steam flowing through the exhaust pipe 24 is cooled by the condensing cavity 280 inside the condensing pipe 28. When the high-temperature steam enters the condensing cavity 280 through the exhaust pipe 24, it exchanges heat with the cooling water in the condensing cavity 280, and the heat is transferred out, so that the temperature of the steam is reduced, and the scalding problem caused by the direct discharge of the high-temperature steam is effectively avoided, and the safety of the equipment is greatly improved.

[0087] Further, the condensing pipe 28 also has a water inlet joint 281 and a water outlet joint 282 which respectively communicate with the condensing cavity 280, and the water outlet joint 282 communicates with the water inlet 214 of the tank body 21. The cooling water can be pure water filtered by the filtering assembly 50. This way of using the filtered pure water as cooling water not only ensures the purity of the cooling water and avoids pollution to the inside of the equipment, but also fully utilizes the existing resources of the equipment. The pure water enters the condensing cavity 280 from the water inlet joint 281, exchanges heat with the high-temperature steam in the condensing cavity 280, and its temperature rises after absorbing the heat of the steam, and then flows out from the water outlet joint 282 and enters the heating cavity 201 through the water inlet 214. In this way, the heat of the high-temperature steam is utilized to some extent, and the energy utilization efficiency of the entire equipment is improved.

[0088] Further, the water outlet joint 282 is higher than the water inlet joint 281, and the water inlet joint 281 and the water outlet joint 282 are arranged diagonally. This layout makes the flow path of the cooling water in the condensing cavity 280 longer and more uniform, increases the contact area of the cooling water and the high-temperature steam, and further improves the condensing effect. Compared with simple parallel arrangement or other conventional layouts, diagonal arrangement can make the cooling water flow fully in the condensing cavity 280 and more comprehensively absorb the heat of the high-temperature steam, so as to ensure that the steam discharged from the exhaust pipe 24 is more fully cooled and the risk of scalding is further reduced.

[0089] In some embodiments, the net heat all-in-one machine of the embodiment can also realize the function of allowing the user to obtain water at a set temperature.

[0090] Specifically, the filtering assembly 50 of the embodiment further includes a pure water outlet pipe, one end of which is connected to the pure water outlet of the RO filter core, and the other end has two branches, one branch conveying pure water into the heating cavity 201, and the other branch conveying pure water to the booster pump and the faucet, and the pure water outlet pipe and the hot water outlet pipe 27 meet at the faucet.

[0091] The net heat all-in-one machine further comprises a booster pump, a faucet, a first temperature sensor, a second temperature sensor and a controller.

[0092] The booster pump is connected with the pure water outlet pipe and outputs different pure water flow by adjusting its duty cycle to control the operation power, and the duty cycle can be determined by the user-selected warm water level.

[0093] The faucet is used as a water terminal to receive pure water from the pure water outlet pipe and hot water from the hot water outlet pipe 27, and to mix the two to form warm water of a set temperature.

[0094] The first temperature sensor can be installed in the tank 21 or the hot water outlet pipe 27 to monitor the temperature of the hot water in the heating cavity 201 and feed the data to the controller.

[0095] The second temperature sensor is installed in the pure water outlet pipe to detect the temperature of the pure water in the pure water outlet pipe and feed the data to the controller.

[0096] The controller is used to receive the data of the first temperature sensor and the second temperature sensor, and based on the temperature data, control the operation power of the water pump 30 and the booster pump to achieve the allocation of the hot water and pure water flow, and finally form water of the user-set temperature value at the faucet. In this embodiment, the controller controls the operation power of the water pump 30 and the booster pump by controlling the duty cycle of the two.

[0097] For example, the user selects a specific warm water level on the operation interface of the net heat all-in-one machine according to the demand for water temperature, such as the common 45℃ or 55℃, etc.

[0098] When the user selects the warm water level, the controller controls the duty cycle of the booster pump according to the preset corresponding relationship. For example, when the user selects the 45℃ warm water level, the duty cycle of the booster pump is set to 85%; if the user selects the 55℃ warm water level, the duty cycle of the booster pump is set to 75%. Through the adjustment of the duty cycle, the booster pump can deliver pure water to the faucet at a corresponding pure water flow. The adjustment of the duty cycle actually controls the working time ratio of the booster pump, and thus controls the pure water flow, to ensure that there is an appropriate amount of low-temperature pure water participating in the mixing process.

[0099] At the same time when the booster pump starts to deliver pure water, the first temperature sensor continuously monitors the temperature of the hot water in the heating cavity 201, and the second temperature sensor synchronously detects the temperature of the pure water in the pure water outlet pipe. The two temperature sensors obtain temperature data in real time and transmit the data to the controller to provide temperature data for the subsequent calculation and control of the duty cycle of the water pump 30.

[0100] After the controller receives the detected values of the pure water temperature and the hot water temperature, it calculates the required duty cycle of the water pump 30 according to the internal preset control algorithm. According to the calculated duty cycle of the water pump 30, the controller controls the water pump 30 to deliver hot water to the faucet at a corresponding hot water flow rate. In this way, the flow rate of the hot water can be matched with the determined flow rate of the pure water to achieve the user-set temperature after the two are mixed at the faucet.

[0101] The pure water delivered from the pure water outlet pipe and the hot water delivered from the hot water outlet pipe 27 meet and mix thoroughly at the faucet. Due to the adjustment of the flow rates of the pure water and the hot water in the previous step by controlling the duty cycles of the booster pump and the water pump 30, the two can form warm water at the set temperature according to the heat transfer and mixing principle when mixed. For example, at the 45°C warm water level, the pure water at the appropriate flow rate and the hot water at the corresponding flow rate are mixed to finally output warm water at 45°C stably at the faucet, thereby meeting the user's demand.

[0102] The above merely provides the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hot pot assembly, characterized by The hot water tank assembly comprises: a tank body having a heating cavity and a water inlet and a water outlet respectively communicating with the heating cavity; a heating element installed in the tank body for heating water in the heating cavity; a water pump having a water suction port communicating with the water outlet; a hot water outlet pipe communicating with a water discharge port of the water pump for discharging water in the heating cavity to outside; a return pipe having one end connected with the hot water outlet pipe and the other end communicating with the heating cavity; and a reversing valve connected at a joint of the return pipe and the hot water outlet pipe, the reversing valve being used for selectively controlling the hot water outlet pipe and the return pipe to be in communication or the hot water outlet pipe and outside to be in communication.

2. The hot pot assembly of claim 1, wherein, The hot water outlet pipe comprises a main flow section and a branch flow section connected with each other, and the return pipe is connected at a joint of the main flow section and the branch flow section. The reversing valve is used for selectively controlling the main flow section and the return pipe to be in communication or the main flow section and the branch flow section to be in communication.

3. The thermal tank assembly of claim 1, wherein, The tank body comprises a tank body, a tank top cover and a tank bottom cover, the tank body is connected with the tank top cover and the tank bottom cover respectively, and the three covers enclose the heating cavity, the heating element is arranged in the heating cavity and extends towards the tank bottom cover without contacting the tank bottom cover.

4. The thermal tank assembly of claim 3, wherein, The water outlet is arranged on the tank body, and the water outlet at least partially overlaps the heating element in the height direction.

5. The thermal tank assembly of claim 3, wherein, The heating element is arranged in a spiral shape, two end portions of the spiral heating element are parallel to each other, and the two end portions protrude from the tank body and are installed on the same generatrix of the tank body.

6. The thermal tank assembly of claim 3, wherein, The spiral center line of the heating element coincides with the central axis of the tank body.

7. The thermal tank assembly of claim 3, wherein, Further comprising a detection assembly for detecting the water level in the heating cavity, the detection assembly comprises a high water level probe and a low water level probe, the high water level probe and the low water level probe are arranged at intervals on the tank top cover and extend into the heating cavity towards the tank bottom cover.

8. The thermal tank assembly of claim 7, wherein, The end of the high water level probe is higher than the heating element, and the end of the low water level probe is lower than the highest position of the heating element.

9. The thermal tank assembly of claim 3, wherein, Further comprising an exhaust pipe and a condensing pipe, the exhaust pipe is connected with the tank top cover and communicates with the heating cavity, and the condensing pipe has a condensing cavity, the exhaust pipe is arranged in the condensing cavity.

10. The thermal tank assembly of claim 9, wherein, The condensing pipe further has a water inlet connector and a water outlet connector respectively communicating with the condensing cavity, and the water outlet connector communicates with the water inlet.

11. The thermal tank assembly of claim 10, wherein, The water outlet connector is higher than the water inlet connector and is diagonally arranged with the water inlet connector.

12. A heat recovery all-in-one machine, characterized by The hot water tank assembly comprises: a shell assembly having a hot tank cavity and a filter core cavity; a filter assembly installed in the filter core cavity and having a raw water inlet and a pure water outlet; and the hot tank assembly according to any one of claims 1 to 11 is installed in the hot tank cavity, and the water inlet communicates with the pure water outlet.

13. The direct heat integral machine of claim 12, wherein, The filter assembly comprises: a filter core having a raw water inlet and a pure water outlet; a pure water outlet pipe connected with the pure water outlet; The net heat all-in-one machine further comprises: a booster pump connected with the pure water outlet pipe; a faucet connected with the pure water outlet pipe and the hot water outlet pipe; a first temperature sensor for detecting the temperature in the heating cavity; a second temperature sensor for detecting the temperature in the pure water outlet pipe; and a third temperature sensor for detecting the temperature in the hot water outlet pipe. A controller is configured 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 of a set temperature value at the faucet.

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