Liquid heating device

Abstract

This utility model relates to the field of household appliance technology and provides a liquid heating device. The water pump module of this liquid heating device includes: a housing with an inlet and an outlet, and a working chamber communicating with the inlet and outlet; a water-isolating assembly including a positioning sleeve, a water-isolating plate, and a positioning shaft on the water-isolating plate; the water-isolating plate is connected to the housing and covers the opening of the working chamber; the positioning sleeve is connected to the side of the water-isolating plate near the housing and is fitted onto the positioning shaft; an impeller assembly disposed within the working chamber and rotatably mounted on the positioning shaft; and a drive assembly configured to drive the impeller assembly to rotate within the working chamber on the positioning shaft, thereby discharging fluid introduced from the inlet to the outlet. The water pump module proposed in this utility model utilizes the positioning shaft to support the impeller assembly and the positioning sleeve to fix the positioning shaft, making it suitable for high-speed rotating and heavy impeller assemblies.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a liquid heating device. Background Technology

[0002] With the increasing popularity of household appliances such as electric water heaters, users have placed higher demands on the health and durability of water-contacting components. In traditional electric water heater pump modules, the impeller assembly and water-contacting parts are typically made of plastic. While plastic parts offer advantages such as low cost and ease of molding, in actual use, prolonged contact with high-temperature water (such as boiling water or high-temperature steam) can cause plastic parts to undergo thermal deformation, aging, and even release harmful substances, shortening the pump's lifespan and posing safety hazards. However, directly replacing plastic with high-temperature resistant materials such as stainless steel or ceramics results in a heavier weight, making them more prone to wear and affecting the pump module's lifespan. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the related art. To this end, this invention proposes a liquid heating device that uses a positioning shaft to support the impeller assembly and a positioning sleeve to set the positioning shaft. This device is suitable for high-speed rotating and heavy impeller assemblies. The positioning shaft and positioning sleeve support the impeller assembly in a coordinated manner, providing more stable support and helping to reduce loosening caused by vibration or fluid impact, thus ensuring the service life of the entire pump module.

[0004] The liquid heating device according to this utility model includes a container, a water pump module, and a heating module; the container forms a liquid storage cavity; the heating module is disposed in the liquid storage cavity;

[0005] The water pump module includes:

[0006] The shell has an inlet and an outlet, and a working chamber is formed inside the shell that communicates with the inlet and the outlet. The working chamber is connected to the liquid storage chamber through the inlet.

[0007] A water-proof assembly, comprising a positioning sleeve, a water-proof plate, and a positioning shaft on the water-proof plate, wherein the water-proof plate is connected to the housing and covers the opening of the working chamber, the positioning sleeve is connected to the side of the water-proof plate near the housing, and the positioning sleeve is sleeved on the positioning shaft;

[0008] An impeller assembly is disposed within the working chamber and rotatably mounted on the positioning shaft;

[0009] A drive assembly is configured to drive the impeller assembly to rotate within the working chamber about the positioning axis to discharge fluid introduced from the inlet to the outlet.

[0010] The water pump module proposed in this utility model uses a positioning shaft to support the impeller assembly and a positioning sleeve to set the positioning shaft. It can be used for high-speed rotating and heavy impeller assemblies. The positioning shaft and positioning sleeve support the impeller assembly in a coordinated manner, which provides more stable support and helps to reduce loosening caused by vibration or fluid impact, thus ensuring the service life of the entire water pump module.

[0011] According to one embodiment of the present invention, the positioning shaft is a metal shaft or a ceramic shaft.

[0012] The water pump module proposed in this utility model, by using a positioning shaft for supporting the impeller assembly to be made of metal or ceramic, is suitable for high-speed rotating and heavy impeller assemblies. The support of this positioning shaft can significantly improve wear resistance and ensure the service life of the entire water pump module.

[0013] In this embodiment, by setting a positioning sleeve, the positioning shaft is more stably supported between the water baffle and the shell, which helps to reduce loosening caused by vibration or fluid impact.

[0014] According to one embodiment of the present invention, the waterproof assembly further includes: a waterproof sleeve, which is fitted over the positioning sleeve, the end of the waterproof sleeve extending to the end of the positioning sleeve and sealingly contacting the outer periphery of the positioning shaft.

[0015] The waterproof sleeve in this embodiment of the invention prevents moisture from seeping into the interior of the waterproof component through the gap between the positioning sleeve and the positioning shaft.

[0016] According to one embodiment of the present invention, a positioning sleeve is formed on the side of the water-blocking plate near the housing, and the positioning sleeve is provided with a mounting hole for inserting the positioning shaft.

[0017] According to one embodiment of the present invention, an adhesive layer is provided between the inner wall of the mounting hole and the positioning shaft.

[0018] This embodiment, by setting an adhesive layer, can fill the tiny gap between the inner wall of the mounting hole and the positioning shaft, and tightly bond the two together through adhesive force, thereby improving the strength and stability of the connection.

[0019] According to one embodiment of the present invention, a rib is formed in the mounting hole, and the positioning shaft is fixed in the mounting hole by the rib.

[0020] This embodiment reduces the gap between the positioning shaft and the mounting hole by setting ribs, thereby improving the sealing performance of the entire waterproof assembly and preventing fluid leakage.

[0021] According to one embodiment of the present invention, the water-blocking plate is a plastic water-blocking plate, a metal water-blocking plate, or a ceramic water-blocking plate.

[0022] According to one embodiment of the present invention, the impeller assembly includes: an impeller housing and ball bearings;

[0023] The impeller housing has blades formed on one side and a shaft hole formed on the other side, and the other side of the impeller housing abuts against the baffle plate;

[0024] The positioning shaft extends to the rotating shaft hole, and the rotating shaft hole abuts against the positioning shaft through the ball bearing, so that during the process of the drive assembly driving the impeller assembly to rotate, the impeller housing and the ball bearing rotate relative to the positioning shaft.

[0025] According to one embodiment of the present invention, the impeller assembly further includes: a first magnetic element; the drive assembly includes: a drive element and a second magnetic element;

[0026] The first magnetic component and the second magnetic component are arranged opposite to each other on both sides of the water-blocking plate. The drive shaft of the drive component is connected to the second magnetic component so that the second magnetic component is driven by the drive component, thereby causing the first magnetic component to drive the impeller housing to rotate.

[0027] In this embodiment, the impeller assembly can maintain stable and efficient rotation during startup, operation, and shutdown through magnetic drive.

[0028] According to one embodiment of the present invention, the housing includes: a housing body, an inlet pipe, and an outlet pipe;

[0029] The water-proof assembly is connected to the shell body and forms the working cavity with the shell body; the shell body has a water inlet on the side opposite to the opening, and the shell body has a water outlet extending along the tangential direction of the inner wall of the working cavity on the side; the water inlet is connected to the water inlet pipe, and the water outlet is connected to the water outlet pipe.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the water pump module provided in this embodiment of the utility model.

[0033] Figure 2 This is an exploded structural diagram of the water pump module provided in this embodiment of the utility model.

[0034] Figure 3 This is a cross-sectional structural diagram of the water pump module provided in this embodiment of the utility model.

[0035] Figure 4 This is one of the schematic diagrams of the waterproof component provided in the embodiment of this utility model.

[0036] Figure 5 This is the second schematic diagram of the waterproof component provided in this embodiment of the utility model.

[0037] Figure 6 yes Figure 5 Installation diagram of the waterproofing component.

[0038] Figure 7 This is the third schematic diagram of the waterproof component provided in this embodiment of the utility model.

[0039] Figure 8 This is the fourth schematic diagram of the waterproof component provided in this embodiment of the utility model.

[0040] Figure 9 This is the fifth schematic diagram of the waterproof component provided in this embodiment of the utility model.

[0041] Figure 10 This is a schematic diagram of the liquid heating device provided in an embodiment of the present invention.

[0042] Figure label:

[0043] 1. Water pump module; 11. Housing; 111. Inlet pipe; 112. Outlet pipe; 113. Housing body;

[0044] 12. Waterproof component; 121. Waterproof plate; 1211. Rotary shaft hole groove; 122. Positioning shaft; 123. Positioning sleeve; 1241. Mounting hole; 1242. Rib; 125. Adhesive layer; 126. Waterproof sleeve;

[0045] 13. Impeller assembly; 131. Impeller housing; 132. Ball bearing; 133. Shaft sleeve; 134. First magnetic component; 135. First seal;

[0046] 14. Drive assembly; 141. Drive component; 142. Second magnetic component; 143. Rotating seat; 15. Sealing ring; 16. Fixed seat;

[0047] 2. Container; 21. Liquid storage chamber. Detailed Implementation

[0048] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0050] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] The following is combined Figures 1 to 10This application describes a liquid heating device. The liquid heating device includes a container 2, a water pump module 1, and a heating module; the container 2 forms a liquid storage chamber 21; the heating module is disposed in the liquid storage chamber 21. The water pump module 1 provides power to the liquid heating device to deliver hot water. The water pump module 1 in this application is applied to an electric kettle; however, it should be understood that the liquid heating device of this application can also be applied to an electric kettle, an electric tea maker, an electric water dispenser, or any other suitable device.

[0053] In one embodiment of this application, such as Figures 1 to 3 As shown, the water pump module 1 includes: a housing 11, a water-blocking assembly 12, an impeller assembly 13, and a drive assembly 14. The housing 11 has an inlet and an outlet, and a working chamber communicating with the inlet and outlet is formed inside the housing 11. The water-blocking assembly 12 includes a positioning sleeve 123, a water-blocking plate 121, and a positioning shaft 122 on the water-blocking plate 121. The water-blocking plate 121 is connected to the housing 11 and covers the opening of the working chamber. The impeller assembly 13 is disposed in the working chamber and rotatably mounted on the positioning shaft 122. The drive assembly 14 is configured to drive the impeller assembly 13 to rotate on the positioning shaft 122 within the working chamber to discharge fluid introduced from the inlet to the outlet.

[0054] In this embodiment, the housing 11 is the external structure of the water pump module 1, and it has a working chamber, an inlet, and an outlet. The working chamber communicates with the inlet and outlet, providing movement space for the impeller assembly 13. The impeller assembly 13 is installed inside the working chamber and located on the positioning shaft 122. The positioning sleeve 123 is connected to the side of the baffle plate 121 near the housing 11, and the positioning sleeve 123 is fitted onto the positioning shaft 122, so that the positioning shaft 122 is more stably supported between the baffle plate 121 and the housing 11, which helps to reduce loosening caused by vibration or fluid impact.

[0055] During operation, the drive assembly 14 of the water pump module 1 starts, and after being powered on, the drive assembly 14 drives the impeller assembly 13 to rotate, causing the impeller assembly 13 to rotate at high speed on the positioning shaft 122 of the working chamber. The rotation of the impeller assembly 13 generates centrifugal force, which draws fluid into the working chamber from the inlet. The fluid is accelerated by the action of the impeller assembly 13 and discharged through the outlet.

[0056] The water pump module 1 proposed in this utility model uses a positioning shaft 122 to support the impeller assembly 13, and a positioning sleeve 123 to set the positioning shaft 122. It can be used for high-speed rotating and heavy impeller assembly 13. The positioning shaft 122 and the positioning sleeve 123 can support the impeller assembly 13 in a more stable way, which helps to reduce loosening caused by vibration or fluid impact and ensure the service life of the entire water pump module 1.

[0057] It should be noted that in this embodiment, the water-contacting components (such as the housing 11 and the impeller assembly 13) can be made of hard materials such as metal and ceramic. These materials have good corrosion resistance, high temperature resistance, and mechanical strength, but are relatively heavy. In this case, the positioning shaft 122 is made of metal or ceramic shaft. Both metal and ceramic shafts have good wear resistance and mechanical strength, making them suitable for the high-speed rotating and heavy impeller assembly 13, and can significantly improve wear resistance.

[0058] In some embodiments, such as Figures 1 to 3 As shown, the positioning shaft 122 is a metal shaft or a ceramic shaft. The metal or ceramic positioning shaft 122 is suitable for high-speed rotating and heavy impeller assembly 13. Supporting the impeller assembly 13 with this positioning shaft 122 can significantly improve wear resistance and ensure the service life of the entire water pump module 1.

[0059] Specifically, the positioning sleeve 123 is preferably made of metal, such as stainless steel. These materials have high strength and good corrosion resistance, which can meet the operating requirements of the water pump module 1 in harsh environments. At the same time, the positioning sleeve 123 can also be made of temperature-resistant materials such as ceramics or glass to adapt to the transportation of high-temperature fluids or special media.

[0060] A wear-resistant layer can be applied to the positioning shaft 122 as needed. This layer improves the wear resistance of the positioning shaft 122 and extends its service life. The wear-resistant layer can be prepared using various materials and techniques, such as spraying wear-resistant coatings or welding wear-resistant alloys. These wear-resistant layer materials typically possess high hardness, high wear resistance, and good adhesion properties, effectively resisting fluid erosion and wear.

[0061] The baffle plate 121 is preferably made of metal, such as stainless steel. The metal baffle plate 121 has high strength, good corrosion resistance and processing performance, which can meet the stability and durability requirements of the water pump module 1.

[0062] The positioning sleeve 123 can be made of heat-resistant materials such as metal, ceramic, or glass. The choice of these materials depends on the specific application and fluid characteristics. For example, ceramic or glass positioning sleeves 123 may be more suitable for high-temperature fluid transportation applications, while metal positioning sleeves 123 are more advantageous in applications that require bearing large loads.

[0063] This embodiment, by introducing a positioning sleeve 123, setting a wear-resistant layer, and selecting appropriate materials and connection methods, helps to improve the stability and durability of the water pump module 1, extend its service life, and adapt to more complex and harsh fluid transportation environments.

[0064] For ease of installation, in some embodiments, such as Figure 5 and Figure 6As shown, a positioning sleeve 123 is formed on the side of the water baffle 121 near the housing 11 (that is, the water baffle 121 and the positioning sleeve 123 are integrally formed), and the positioning sleeve 123 is provided with a mounting hole 1241 for inserting the positioning shaft 122.

[0065] In this embodiment, the positioning sleeve 123 is provided with a mounting hole 1241 for inserting the positioning shaft 122. The position, size, and shape of the mounting hole 1241 match the positioning shaft 122, ensuring that the positioning shaft 122 can be accurately and securely inserted therein. The installation process of the water-stop assembly 12 is significantly simplified by using the positioning sleeve 123 and the mounting hole 1241. During installation, simply align the positioning shaft 122 with the mounting hole 1241 and insert it. Because the positioning sleeve 123 provides additional support and positioning functions, the positioning shaft 122 can be securely held in the predetermined position without worrying about loosening due to vibration or fluid impact.

[0066] In some embodiments, such as Figure 7 As shown, an adhesive layer 125 is provided between the inner wall of the mounting hole 1241 and the positioning shaft 122. The adhesive layer 125 can fill the tiny gap between the inner wall of the mounting hole 1241 and the positioning shaft 122, and tightly bond the two together through adhesive force, thereby improving the strength and stability of the connection. The adhesive layer 125 can also serve as an additional sealing barrier to prevent fluid leakage from the mounting hole 1241, thereby improving the sealing performance of the entire waterproof assembly 12.

[0067] Specifically, in this embodiment, the positioning sleeve 123 is located at the center of the baffle plate 121, which provides a precise positioning point for the installation of the positioning shaft 122 and helps to enhance the mechanical strength of the baffle plate 121. The positioning sleeve 123 and the baffle plate 121 can be connected by welding or adhesive. Since both the positioning sleeve 123 and the baffle plate 121 can be made of metal, they can also be connected by welding, providing strong connection strength and stability. If the two materials are different or for other considerations, an adhesive layer 125 that meets food hygiene requirements can be used for connection to improve the flexibility and adaptability of the connection.

[0068] During installation, the positioning shaft 122 and the positioning sleeve 123 are first assembled together, and then installed onto the mounting hole 1241. This installation method not only simplifies the operation steps but also ensures precise alignment between the positioning shaft 122 and the mounting hole 1241, thereby improving the accuracy and efficiency of the installation.

[0069] When selecting the adhesive layer 125, several factors need to be considered, including adhesion, temperature resistance, corrosion resistance, and food hygiene requirements. Since the waterproof component 12 may come into contact with food or drinking water, the adhesive layer 125 must meet relevant food hygiene standards to ensure that it does not contaminate the water.

[0070] In this embodiment, by adding an adhesive layer 125 between the inner wall of the mounting hole 1241 and the positioning shaft 122, and by optimizing the design of the positioning sleeve 123, the water-proof component 12 in this embodiment has been significantly improved in terms of connection reliability, stability and sealing performance.

[0071] In some embodiments, such as Figure 8 As shown, ribs 1242 are formed within the mounting hole 1241, and the positioning shaft 122 is fixed in the mounting hole 1241 by the ribs 1242. The ribs 1242 form a certain geometric shape within the mounting hole 1241, and these shapes match the contour of the positioning shaft 122, thereby limiting the positioning shaft 122. The presence of the ribs 1242 can also reduce the gap between the positioning shaft 122 and the mounting hole 1241, thereby improving the sealing performance of the entire waterproof assembly 12 and preventing fluid leakage.

[0072] In this embodiment, one or more ribs 1242 can be installed as needed. During installation, an appropriate amount of liquid adhesive (adhesive layer 125) can be added to the mounting hole 1241 of the positioning sleeve 123 before installing the positioning shaft 122. Before curing, the liquid adhesive can fill the gap between the positioning shaft 122, the ribs 1242, and the mounting hole 1241, providing additional adhesive strength. After the liquid adhesive cures, it not only meets food hygiene requirements but also further enhances the connection strength of the positioning shaft 122.

[0073] In this embodiment, by adding a rib structure 1242 inside the mounting hole 1241 and combining it with the application of liquid adhesive, the water-proof component 12 in this embodiment has been significantly improved in terms of connection strength, stability and sealing performance.

[0074] In some embodiments, such as Figure 9 As shown, the waterproof assembly 12 also includes a waterproof sleeve 126. The waterproof sleeve 126 is fitted over the positioning sleeve 123, with its end extending to the end of the positioning sleeve 123 and sealingly contacting the outer periphery of the positioning shaft 122. The waterproof sleeve 126 forms a complete waterproof barrier, effectively preventing moisture from seeping into the interior of the waterproof assembly 12 from the gap between the positioning sleeve 123 and the positioning shaft 122.

[0075] In this embodiment, the waterproof sleeve 126 is preferably made of silicone. Silicone has excellent water resistance, temperature resistance, and elasticity, and can maintain stable performance in various harsh environments. The positioning shaft 122 is connected to the water-blocking plate 121 via the positioning sleeve 123, and is preferably a ceramic shaft. The ceramic shaft has excellent temperature resistance and self-lubricating wear resistance, and can maintain stable performance under high temperature and high speed operation. The water-blocking plate 121 is preferably made of plastic because its molding process is mature and low cost. Plastic parts are lightweight, easy to process, and corrosion resistant, which can meet the material performance requirements of the water-blocking component 12.

[0076] Depending on the requirements, the water-blocking plate 121 can be made of plastic, metal or ceramic.

[0077] For example, when using a plastic baffle plate 121, to avoid direct contact between the plastic and the fluid, such as... Figure 9 As shown, a metal plate can be fitted onto the outer surface of the water-blocking plate 121 and edge-wrapped to avoid the problem of plastic parts easily deforming, aging, or even releasing harmful substances when in contact with high-temperature liquids.

[0078] Metal water-stop 121 can withstand greater pressure and mechanical stress, making it suitable for applications requiring high strength and stability. Ceramic materials can withstand extremely high temperatures, making them suitable for high-temperature environments. Both metal and ceramic water-stop 121 have their advantages and disadvantages; the choice should be made based on the specific application scenario and requirements.

[0079] In some embodiments, such as Figures 1 to 3 As shown, the impeller assembly 13 includes: an impeller housing 131 and ball bearings 132; one side of the impeller housing 131 has blades formed, and the other side has a shaft hole with an extension edge, the extension edge of the other side of the impeller housing 131 abuts against the baffle plate 121; the positioning shaft 122 extends to the shaft hole, and the shaft hole abuts against the positioning shaft 122 through the ball bearings 132, so that during the process of the drive assembly 14 driving the impeller assembly 13 to rotate, the impeller housing 131 is supported on the ball bearings 132, the positioning shaft 122 is supported under the ball bearings 132, and the impeller housing 131 and the support shaft can rotate relative to the ball bearings 132.

[0080] In this embodiment, to ensure the stability of the positioning shaft 122 and the ball bearing 132, the impeller assembly 13 is also provided with a bushing 133. The bushing 133 is sleeved on the outside of the positioning shaft 122. The bushing 133 and the ball bearing 132 are installed in the shaft hole. The ball bearing 132 is disposed between the bushing 133 and the shaft hole. The shaft hole of the impeller housing 131 abuts against the positioning shaft 122 through the ball bearing 132. When the impeller housing 131 rotates, the bottom surface of the impeller housing 131 contacts the ball bearing 132, ensuring the stability of the impeller housing 131 during rotation.

[0081] Generally, bushing 133 can be made of heat-resistant materials, such as stainless steel, ceramic, brass, graphite, and polyetheretherketone (PEEK).

[0082] It should be noted that for the impeller assembly 13 to rotate stably, the dimensions, surface finish, and fit between the ball bearings 132, bushing 133, and positioning shaft 122 of the baffle plate 121 are crucial. Considering actual production, it is best to machine the ball bearings 132 and bushing 133 separately before assembling them with the impeller housing 131. Of course, one or both of the ball bearings 132 and bushing 133 can be integrally formed with the impeller housing 131, but the effect will be relatively inferior.

[0083] In some embodiments, such as Figure 2 , Figure 3 and Figure 10 As shown, the impeller assembly 13 further includes a first magnetic element 134; the drive assembly 14 includes a drive element 141 and a second magnetic element 142; the first magnetic element 134 is disposed in the impeller housing 131, and the first magnetic element 134 and the second magnetic element 142 are arranged opposite to each other on both sides of the baffle plate 121. The drive shaft of the drive element 141 is connected to the second magnetic element 142, so that the drive element 141 drives the second magnetic element 142, causing the first magnetic element 134 to drive the impeller housing 131 to rotate.

[0084] In this embodiment, both the first magnetic component 134 and the second magnetic component 142 are components made of magnets or magnetic materials. The first magnetic component 134 and the second magnetic component 142 have the same magnetism at opposite positions.

[0085] The drive component 141 can be a motor or other rotating drive component. When the rotation of the drive component 141 is transmitted to the second magnetic component 142 through the drive shaft, a magnetic interaction is generated between the second magnetic component 142 and the first magnetic component 134. Under the action of the magnetic force, the first magnetic component 134 drives the impeller housing 131 to start rotating. As a result, the impeller housing 131 rotates at high speed in the working chamber. The rotation of the impeller housing 131 generates centrifugal force, which draws fluid from the inlet into the working chamber. The fluid is accelerated under the action of the impeller housing 131 and discharged through the outlet. When the water pump module 1 completes its task or reaches the preset condition, the power is cut off, and the drive component 141 stops rotating. After the second magnetic component 142 stops rotating, it can provide a certain resistance to the first magnetic component 134, which can eventually stop the entire impeller housing 131 from rotating.

[0086] In this embodiment, the impeller assembly 13 can maintain stable and efficient rotation during startup, operation and shutdown through magnetic drive.

[0087] In addition, the drive assembly 14 is also provided with a rotating seat 143 and a fixed sleeve. The fixed sleeve is fitted on the rotating shaft, and the rotating seat 143 is fitted on the fixed sleeve. The rotating seat 143 is used to support and fix the second magnetic component 142.

[0088] In this embodiment, after the driving component 141 is energized, it drives the driving shaft to rotate, and the fixed sleeve rotates accordingly. The rotation of the fixed sleeve drives the rotating seat 143 to rotate, and the second magnetic component 142 on the rotating seat 143 rotates accordingly. Thus, the second magnetic component 142 drives the first magnetic component 134 to rotate through magnetic force, so that the first magnetic component 134 and the impeller housing 131 start to rotate synchronously.

[0089] In some embodiments, such as Figure 2 and Figure 3 As shown, the impeller assembly 13 further includes a first seal 135. The first seal 135 is connected to the other side of the impeller housing 131, and a receiving cavity is formed between the impeller housing 131 and the first seal 135. A first magnetic element 134 is disposed in the receiving cavity.

[0090] To prevent the first magnetic component 134 from contacting the fluid, the impeller assembly 13 is also provided with a first seal 135. The first seal 135 is connected to the other side of the impeller housing 131 to form a receiving cavity, preventing fluid from entering and affecting the magnetic transmission. The first seal 135 can be made of corrosion-resistant and high-temperature-resistant materials to adapt to different fluid environments.

[0091] like Figure 1 and Figure 2 As shown, the water pump module 1 also includes a mounting base 16. The mounting base 16 forms an installation space, and its side is connected to components within the liquid heating device for fixing the entire water pump module. The upper side of the mounting base 16 is connected to the housing 11, and the lower side is connected to the drive assembly 14. The first magnetic element 134 (and the entire impeller assembly 13) is opposite to the installation space, and the second magnetic element 142 is disposed within the installation space, opposite to the first magnetic element 134. The drive shaft of the drive element 141 is connected to the second magnetic element 142, and by rotating the second magnetic element 142, the first magnetic element 134 and the impeller assembly 13 are driven to rotate.

[0092] To avoid sealing within the working chamber, in some embodiments, such as Figure 2 As shown, a sealing ring 15 is also provided between the impeller housing 131 and the baffle plate 121. The sealing ring 15 is usually made of corrosion-resistant and wear-resistant materials, such as fluororubber, silicone rubber or polytetrafluoroethylene.

[0093] Correspondingly, such as Figure 3As shown, the baffle plate 121 has a shaft hole groove 1211 for accommodating the sealing ring 15 and the bottom edge of the impeller housing 131. The sealing ring 15 is arranged circumferentially along the impeller housing 131, and the entire bottom edge of the impeller housing 131 is fitted into the shaft hole groove 1211 in conjunction with the sealing ring 15. During the rotation of the impeller housing 131, the sealing ring 15 is tightly fitted between the bottom edge of the impeller housing 131 and the shaft hole groove 1211 of the baffle plate 121, preventing fluid leakage from the working chamber. The elastic design of the sealing ring 15 allows for slight displacement of the impeller housing 131 during rotation while maintaining sealing performance. By setting the sealing ring 15 between the impeller housing 131 and the baffle plate 121, and combining it with the design of the shaft hole groove 1211, the pump module 1 can ensure the sealing of the working chamber while allowing slight displacement of the impeller housing 131 during rotation.

[0094] In some embodiments, such as Figure 1 and Figure 2 As shown, the shell 11 includes: a shell body 113, a water inlet pipe 111, and a water outlet pipe 112; a water-proof assembly 12 is connected to the shell body 113 and forms a working cavity with the shell body 113; a water inlet is formed on the top surface of the shell body 113, and a water outlet extending along the tangential direction of the inner wall of the working cavity is formed on the side of the shell body 113; the water inlet is connected to the water inlet pipe 111, and the water outlet is connected to the water outlet pipe 112.

[0095] The inlet pipe 111 can be straight as needed, which helps reduce fluid resistance and vortices in the pipe, thereby improving fluid flow efficiency. More importantly, the straight inlet pipe 111 facilitates the return of air bubbles generated in the working chamber of the impeller assembly 13, which helps reduce the negative impact of air bubbles on pumping efficiency, as air bubbles reduce fluid density and pumping efficiency. At the same time, the tangential outlet design increases the efficiency of fluid discharge, improving the pumping efficiency of the high-efficiency pump module 1.

[0096] Generally, the shell body 113, the inlet pipe 111, and the outlet pipe 112 are all made of metal, ensuring the strength and durability of the components. At the same time, the metal shell body 113, the inlet pipe 111, and the outlet pipe 112 can avoid the problems of thermal deformation, aging, or even the release of harmful substances by plastic parts when in contact with high-temperature water.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A liquid heating apparatus, characterised in that, It includes a container (2), a water pump module (1), and a heating module; the container (2) forms a liquid storage chamber (21); the heating module is located in the liquid storage chamber (21); The water pump module (1) includes: The shell (11) has an inlet and an outlet. The shell (11) has a working cavity that communicates with the inlet and the outlet. The working cavity communicates with the liquid storage cavity (21) through the inlet. Waterproof assembly (12), the waterproof assembly (12) includes a positioning sleeve (123), a waterproof plate (121) and a positioning shaft (122) on the waterproof plate (121), the waterproof plate (121) is connected to the housing (11) and covers the opening of the working chamber, the positioning sleeve (123) is connected to the side of the waterproof plate (121) near the housing (11), and the positioning sleeve (123) is sleeved on the positioning shaft (122). An impeller assembly (13) is disposed within the working chamber and is rotatably mounted on the positioning shaft (122); The drive assembly (14) is configured to drive the impeller assembly (13) to rotate about the positioning shaft (122) within the working chamber to discharge fluid introduced from the inlet to the outlet.

2. The liquid heating device of claim 1, wherein, The positioning shaft (122) is a metal shaft or a ceramic shaft.

3. The liquid heating device of claim 2, wherein, The waterproof component (12) further includes a waterproof sleeve (126) fitted over the positioning sleeve (123), the end of the waterproof sleeve (126) extending to the end of the positioning sleeve (123) and sealingly contacting the outer periphery of the positioning shaft (122).

4. The liquid heating device of claim 1, wherein, The water-blocking plate (121) has a positioning sleeve (123) formed on the side near the housing (11), and the positioning sleeve (123) has a mounting hole (1241) for inserting the positioning shaft (122).

5. The liquid heating device of claim 4, wherein, An adhesive layer (125) is provided between the inner wall of the mounting hole (1241) and the positioning shaft (122).

6. The liquid heating device of claim 4, wherein, A rib (1242) is formed inside the mounting hole (1241), and the positioning shaft (122) is fixed in the mounting hole (1241) by the rib (1242).

7. The liquid heating device of any of claims 1-6, wherein, The water-blocking plate (121) is a plastic water-blocking plate (121), a metal water-blocking plate (121), or a ceramic water-blocking plate (121).

8. The liquid heating device of any one of claims 1-6, wherein, The impeller assembly (13) includes: an impeller housing (131) and ball bearings (132); The impeller housing (131) has blades formed on one side and a shaft hole formed on the other side. The other side of the impeller housing (131) abuts against the baffle plate (121). The positioning shaft (122) extends to the rotating shaft hole, and the rotating shaft hole abuts against the positioning shaft (122) through the ball (132) so that during the process of the drive assembly (14) driving the impeller assembly (13) to rotate, the impeller housing (131) and the ball (132) rotate relative to the positioning shaft (122).

9. The liquid heating device of claim 8, wherein, The impeller assembly (13) further includes a first magnetic element (134); the drive assembly (14) includes a drive element (141) and a second magnetic element (142). The first magnetic element (134) and the second magnetic element (142) are arranged opposite to each other on both sides of the water-blocking plate (121). The drive shaft of the drive element (141) is connected to the second magnetic element (142) so that the second magnetic element (142) is driven by the drive element (141) so that the first magnetic element (134) drives the impeller housing (131) to rotate.

10. The liquid heating device of any of claims 1-6, wherein, The shell (11) includes: shell body (113), water inlet pipe (111) and water outlet pipe (112). The water-proof component (12) is connected to the shell body (113) and forms the working cavity with the shell body (113); the shell body (113) has the water inlet on the side opposite to the opening, and the shell body (113) has the water outlet extending along the tangential direction of the inner wall of the working cavity on the side; the water inlet is connected to the water inlet pipe (111), and the water outlet is connected to the water outlet pipe (112).

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