Heating device, manufacturing method thereof and household appliance

Abstract

The invention discloses a heating device, a manufacturing method thereof and a household appliance, and relates to the technical field of heating devices. The heating device specifically comprises a heating accessory, a water nozzle and a second support. The heating accessory is provided with at least one fluid cavity and fluid connectors arranged at the two ends of the fluid cavity. The water nozzle is detachably connected to the fluid interface; the second support is connected to the side, facing the water nozzle, of the heating accessory, a second through hole is formed in the second support, and one end of the water nozzle penetrates through and extends out of the second through hole; and the water nozzle can be moved in or out from the second through hole and is assembled and disassembled on the fluid interface. And the water nozzle can directly extend into the through hole and is mounted at the fluid interface, so that the mounting steps of the water nozzle are greatly simplified. Meanwhile, the water nozzle can be directly detached through the second through hole, the second support does not need to be detached, and the water nozzle can be conveniently overhauled or replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of heating devices, and in particular to a heating device and a manufacturing method thereof, and a household appliance. Background Art

[0002] The heating device is the main component of household heating appliances such as floor scrubbers, hanging irons, washing machines, and dishwashers. When these appliances are working, the water in their water tanks is injected into the heating device for heating or evaporation, and the generated hot water or steam flows out from the working surface of the appliance, thereby meeting the different needs of household appliances.

[0003] The heating device of the household appliance is provided with a water channel, and a water inlet and a water outlet are provided on the surface of the chamber. Cold water enters the interior of the chamber through the water inlet, and flows in the water channel inside the chamber to the steam outlet. In this process, the heating tube heats the water inside the chamber to generate steam that is discharged from the steam outlet. Water nozzles are installed at both the water inlet and the outlet. One end of the heating device is connected to the water tank of the household appliance through the water nozzle and a pipeline, and the other end is connected to the water outlet or air outlet of the heating appliance through the water nozzle and a pipeline, so as to realize the operation of the household appliance.

[0004] In the prior art, the water nozzle of the heating device is formed by welding. When welding in this way, one end of the water nozzle needs to be clamped on the water inlet and outlet of the heating device, and the height of the water nozzle needs to be adjusted to ensure that the water nozzle is connected to the water channel of the heating device and maintains a suitable distance from the bottom of the water channel. Finally, the water nozzle and the water inlet and outlet of the heating device are welded into shape, and the heating device is installed on the household appliance after adding the shell and used as the core heating unit.

[0005] In the prior art, the water nozzle is fixed to the water inlet and outlet of the heating device by welding. When assembling the heating unit of the household appliance, the water nozzle needs to be welded to the water inlet and outlet of the heating device first, and then the shell is mounted on both sides of the heating device, and the water nozzle is extended from the hole of the shell. However, this design has obvious defects: when the water nozzle needs to be repaired or replaced, the shell must be disassembled before the water nozzle can be operated. This process is not only cumbersome, but also greatly increases the time cost and labor intensity of maintenance.

[0006] Therefore, the present application can effectively solve the problem of low efficiency in maintenance and replacement of water nozzles when the heating device is installed on the shell. Summary of the invention

[0007] The main purpose of the present invention is to provide a heating device and a manufacturing method thereof and a household appliance, which aims to improve the efficiency of water nozzle inspection and replacement when the heating device and the shell are installed.

[0008] In order to achieve the above object, the present invention provides a heating device, comprising:

[0009] A heating accessory having at least one fluid channel and fluid interfaces disposed at both ends of the fluid channel;

[0010] a water nozzle, detachably connected to the fluid interface; and

[0011] A second bracket, connected to a side of the heating accessory facing the water nozzle, the second bracket being provided with a second through hole, one end of the water nozzle passing through and extending out of the second through hole;

[0012] The water nozzle can be moved in or out of the second through hole and can be installed and disassembled on the fluid interface.

[0013] Furthermore, the second bracket is provided with a shielding member at the periphery of the second through hole, the shielding member partially shields the second through hole and is located at the periphery of the faucet.

[0014] Furthermore, the faucet includes a plug-in portion and a limiting portion arranged on the outer wall of the faucet. The faucet can be rotatably installed at the second through hole and can be switched to a first rotation position or a second rotation position. When the faucet is in the first rotation position, the limiting portion is misaligned with the shielding component, and the faucet can be moved out of the fluid interface along the thickness direction of the second bracket; when the faucet is in the second rotation position, the limiting portion overlaps with the shielding component to limit the faucet from moving out of the fluid interface along the thickness direction of the second bracket.

[0015] Furthermore, the shielding component includes a shielding portion disposed at the second through hole, and when the faucet is in the second rotation position, the shielding portion is in a moving-out path of the limiting portion along a thickness direction of the second bracket.

[0016] Furthermore, the shielding portion is a blocking piece connected to the second bracket or a convex rib integrally formed on the second bracket.

[0017] Furthermore, the shielding member includes a pressing portion arranged at the second through hole, and a sealing member is also installed between the fluid interface and the faucet. When the shielding member and the heating accessory are installed, the pressing portion presses the sealing member against the fluid interface.

[0018] Furthermore, the water nozzle is cylindrical, L-shaped or T-shaped.

[0019] Furthermore, a blocking portion is provided at one end of the plug-in portion, and the blocking portion is used to be engaged with the fluid interface.

[0020] The present application also discloses a method for manufacturing a heating device, the method comprising:

[0021] A metal plate is selected and stamped to form a waterway plate with convex ribs. The heat conducting plate and the waterway plate are covered and welded to form a heating accessory with a fluid cavity. A heating element is welded on one side of the heat conducting plate, wherein both ends of the convex ribs are provided with fluid interfaces.

[0022] A sealing member is assembled at the fluid interface, and a second bracket and a first bracket are respectively installed on the plate surfaces of the waterway plate and the heat conducting plate; wherein the second bracket is provided with a second through hole aligned with the fluid interface;

[0023] Insert the water nozzle from the second through hole and assemble it at the fluid interface.

[0024] The present application also discloses a household appliance, which is equipped with the above-mentioned heating device or the heating device obtained by the above-mentioned manufacturing method.

[0025] The above technical solution has the following advantages:

[0026] The present invention optimizes the connection structure between the heating accessory and the water nozzle, installs a second bracket on the side of the heating accessory facing the fluid cavity, and sets a second through hole aligned with the fluid interface on the bracket. The water nozzle can be directly inserted from the through hole and installed at the fluid interface, which greatly simplifies the installation steps of the water nozzle. At the same time, the water nozzle can also be directly disassembled through the second through hole without disassembling the second bracket, which is convenient for repairing or replacing the water nozzle. In addition, the present invention can also flexibly replace different types of water nozzles according to different product requirements, which significantly improves the versatility of the product.

[0027] In order to further optimize the installation accuracy and stability of the faucet, the present invention provides a shielding mechanism around the second through hole. The shielding mechanism can limit the installation position of the faucet to ensure the correct assembly of the faucet. At the same time, a limiting portion is provided on the outer wall of the faucet, and the limiting portion can be assembled with the shielding mechanism in a displaced manner. When the faucet is installed in place, the limiting portion can be locked in a specific position by rotating it, thereby limiting the rotation of the faucet and ensuring that the angle of the faucet is fixed. This design not only improves the reliability of the faucet installation, but also facilitates the connection of the water supply pipeline or the drainage pipeline, further improving the practicality and user experience of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0030] Figure 2 It is the exploded structure diagram of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the second viewing angle of the present invention;

[0032] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0033] Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle;

[0034] Figure 6 This is a structural schematic diagram of the present invention without the first bracket;

[0035] Figure 7 It is a structural schematic diagram of a first water faucet embodiment of the present invention;

[0036] Figure 8 It is a schematic structural diagram of a second water nozzle embodiment of the present invention.

[0037] In the figure: 1. heating accessory; 11. water channel plate; 12. heat conducting plate; 13. heating element; 14. fluid channel; 15. fluid interface; 16. sealing element; 17. temperature control element; 2. first bracket; 21. first shell cover; 22. connecting part; 23. first through hole; 3. second bracket; 31. second shell cover; 32. second through hole; 33. shielding member; 331. shielding part; 332. pressing part; 4. faucet; 41. plug-in part; 42. limiting part; 43. blocking part. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0039] like Figure 1 and Figure 2 As shown, a heating device includes a heating accessory 1, a water nozzle 4 and a second bracket 3, wherein the heating accessory 1 has at least one fluid cavity 14 and fluid interfaces 15 arranged at both ends of the fluid cavity 14; the water nozzle 4 is detachably connected to the fluid interface 15; the second bracket 3 is connected to the side of the heating accessory 1 facing the water nozzle 4, and a second through hole 32 is provided on the second bracket 3, and one end of the water nozzle 4 passes through and extends out of the second through hole 32; wherein the water nozzle 4 can be moved in or out of the second through hole 32, and can be disassembled and assembled on the fluid interface 15.

[0040] As an embodiment of the present application, the heating accessory 1 can adopt products of several shapes, such as a fluid cavity 14 formed by covering a plate body, or a fluid cavity 14 formed by covering a cylinder. The fluid cavity 14 can be selected in different shapes, such as a snake shape, a mosquito coil shape or a U-shaped shape. The fluid cavity 14 is only for increasing the flow distance of the fluid and improving the heating time of the liquid or gas. The second bracket 3 corresponding to the heating accessory 1 is also set corresponding to the shape of the heating accessory 1. If a fluid cavity 14 with a cylindrical covering shape is used, an arc-shaped second bracket 3 is required. The shape of the fluid cavity 14 is not specifically limited here. The present application preferably uses a waterway plate 11 and a heat conduction plate 12 to cover and weld together to form the heating accessory 1, because it has lower production and installation costs and occupies less space.

[0041] Specifically, the water nozzle 4 can be directly extended from the second through hole 32 and disassembled and assembled at the fluid interface 15. During disassembly and assembly, the water nozzle 4 can be ensured to be sealed at the fluid interface 15, which improves the convenience of disassembly and assembly of the water nozzle 4 and also ensures the normal maintenance and replacement of the water nozzle 4.

[0042] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, as an embodiment of the present application, the water nozzle 4 includes a plug-in portion 41 and a limiting portion 42 arranged on the outer wall of the water nozzle 4. The plug-in portion 41 is the part of the water nozzle 4 plugged into the fluid interface 15. The through hole in the plug-in portion 41 is connected to the fluid cavity 14, so that the fluid cavity 14 can flow water vapor into or out of the water nozzle 4. The present application preferably flows water into the fluid cavity 14. When the second bracket 3 is installed on the heating accessory 1, the plug-in portion 41 extends from the second through hole 32 and can be directly disassembled and assembled at the fluid interface 15. The installation method of the water nozzle 4 is as follows:

[0043] As an embodiment of the present application, the faucet 4 can be directly plugged into the fluid interface 15, that is, the plug-in portion 41 extends into the fluid interface 15, and the end of the faucet 4 away from the plug-in portion 41 passes through the second through hole 32 to the first shell, so as to facilitate the connection of the water pipe to the faucet 4 to complete the work of water inlet or outlet, and also to allow air inlet or outlet, so that the faucet 4 is directly embedded in the fluid interface 15. This installation method is simple, and the faucet 4 is interference fit with the fluid interface 15 to ensure the sealing performance of the faucet 4 and the fluid interface 15. Preferably, the seal 16 at the faucet 4 and the fluid interface 15 is squeezed and sealed.

[0044] As an embodiment of the present application, fasteners, such as rivets and bolts, may be provided on the limiting portion 42 on the outside of the water nozzle 4. When the water nozzle 4 extends from the second through hole 32 and is connected to the fluid interface 15, the limiting portion 42 can be installed on the first shell by rivets and bolts to complete the fixation of the water nozzle 4. If disassembly is required, it is only necessary to remove the bolts or rivets and directly remove the water nozzle 4 from the fluid interface 15, thereby improving the installation convenience of the water nozzle 4. At the same time, the locking of the limiting portion 42 can increase the pressing force of the water nozzle 4 on the fluid interface 15 to ensure the sealing of the connection.

[0045] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, as a preferred embodiment of the present application, the second bracket 3 is provided with a shielding member 33 around the second through hole 32, the shielding member 33 partially shields the second through hole 32, and is located at the periphery of the water nozzle 4, when the water nozzle 4 is inserted into the fluid interface 15, the water nozzle 4 can be rotatably installed at the second through hole 32, the water nozzle 4 can be rotatably installed at the second through hole 32, and can be switched to a first rotation position or a second rotation position, when the water nozzle 4 is in the first rotation position, the limiting portion 42 is misaligned with the shielding member 33, and the water nozzle 4 can be moved out of the fluid interface along the thickness direction of the second bracket 3. Mouth 15; when the water spout 4 is in the second rotation position, the limiting portion 42 overlaps with the shielding member 33 to limit the water spout 4 from moving out of the fluid interface 15 along the thickness direction of the second bracket 3, wherein the area of ​​the second through hole 32 is larger than the cross-sectional area of ​​the water spout 4 to ensure that the water spout 4 extends out of the second through hole 32, and at the same time the shielding member 33 can partially block the second through hole 32, thereby hindering the movement of the limiting portion 42 of the outer wall of the water spout 4. In the present application, the shielding member 33 preferably has at least one side tangent to the outer wall of the water spout 4, so that when the water spout 4 is inserted, the accuracy of the installation of the water spout 4 can be ensured.

[0046] Specifically, when the faucet 4 is in the first rotation position, the limiting portion 42 and the shielding member 33 are offset in the thickness direction of the first shell, and the faucet 4 can be moved toward the fluid interface 15 until the through hole of the plug-in portion 41 is connected to the fluid cavity 14. At this time, the limiting portion 42 is below the shielding member 33. The faucet 4 is then rotated from the first rotation position to the second rotation position, so that the limiting portion 42 on the faucet 4 is gradually rotated to directly below the shielding member 33. The shielding member 33 prevents the limiting portion 42 from moving out along the thickness direction of the first shell. The faucet 4 can then be installed at the fluid interface 15, and a water pipe is then connected to one end of the faucet 4. The connection orientation of the water pipe limits the rotation direction of the faucet 4, ensuring that the faucet 4 is always in the second rotation position when in use to prevent the faucet 4 from falling off the fluid interface 15.

[0047] like Figure 2 , Figure 4 and Figure 5As shown, the shielding member 33 includes a shielding portion 331 arranged at the second through hole 32, and the shielding portion 331 is a blocking member connected to the second bracket 3 or a convex rib integrally formed on the second bracket 3. The blocking member can be a baffle, a bracket or a block, and the baffle, bracket or block is directly fixed to the second bracket 3, such as installing the baffle, bracket or block on the second bracket 3 by fasteners or gluing. If the second bracket 3 is made of metal material, the baffle, bracket or block can also be welded to the second bracket 3. In the present application, the shielding portion 331 is preferably integrally formed on the second bracket 3, and can be directly molded by a mold to reduce production costs. When the faucet 4 is in the second rotational position, the blocking portion 331 is in the removal path of the limiting portion 42 along the thickness direction of the second bracket 3, wherein the blocking portion 331 can adopt different shapes, such as one or more arc blocks arranged at the edge of the second through hole 32, and the limiting portion 42 of the outer wall of the faucet 4 can adopt different shapes, such as one or more blocks protruding from the outer wall of the faucet 4. On the cross section of the second through hole 32, the limiting portion 42 can be moved in or out from the gap of one or more arc blocks. When the faucet 4 switches from the first rotational position to the second rotational position, at least one limiting portion 42 overlaps with the arc block to prevent the faucet 4 from moving out of the fluid interface 15.

[0048] In the present application, the shielding portion 331 preferably adopts two arc blocks symmetrically arranged at the edge of the second through hole 32. When the water nozzle 4 is inserted into the fluid interface 15, the limiting portion 42 is staggered with the arc blocks, the limiting portion 42 is aligned with the notch of the arc block, the plug-in portion 41 extends into the fluid cavity 14, and the limiting portion 42 is close to the fluid interface 15. At this time, the water nozzle 4 is switched from the first rotation position to the second rotation position, the limiting portion 42 rotates from the notch of the arc block and overlaps with the arc block to complete the installation; if the water nozzle 4 needs to be removed, only the water nozzle 4 is rotated from the second rotation position to the first rotation position, so that the limiting portion 42 rotates to the notch of the arc block, and the water nozzle 4 is pulled out to complete the installation. It should be noted that when the water nozzle 4 is in the second rotation position, the limiting portion 42 overlaps with the arc block, and the rotation angle of the water nozzle 4 can be limited by a pin or a bolt.

[0049] like Figure 7 and Figure 8 As shown, the water nozzle 4 is cylindrical, L-shaped or T-shaped, and its specific shape can be adjusted according to needs. For example, the water nozzle 4 is L-shaped, which is convenient for adjusting the steering angle of the water nozzle 4 according to the direction of water supply and water outlet. For example, in the direction of water supply and water outlet, the water nozzle 4 is in the second rotation position; if the angle adjustment range of the water nozzle 4 is increased, a single C-shaped arc block and a limiting portion 42 that fills the gap of the C-shaped arc block can be used to improve the space utilization of the equipment and reduce the bending degree of the water pipe connection to avoid water blockage.

[0050] like Figure 4 and Figure 5As shown, as an embodiment of the present application, the shielding member 33 includes a pressing portion 332 arranged at the second through hole 32, and a sealing member 16 is also installed between the fluid interface 15 and the faucet 4. When the shielding member 33 is installed with the heating accessory 1, the pressing portion 332 presses the sealing member 16 against the fluid interface 15, wherein the pressing portion 332 is preferably integrally formed with the second bracket 3, and when the second bracket 3 is installed on the heating accessory 1, the pressing portion 332 presses the edge of the sealing member 16, so that the sealing member 16 is always pressed against the fluid interface 15 , improving the sealing performance of the seal 16 at the fluid interface 15 and the faucet 4, and at the same time, the edge of the seal 16 is compressed, and the middle part can push up the limiting part 42, so that the limiting part 42 is close to the shielding part 331, thereby improving the friction between the limiting part 42 and the shielding part 331. At the same time, a water pipe is installed at the top of the faucet 4, and the strap on the water pipe can be hung on the limiting part 42. When the faucet 4 rotates, the limiting part 42 of its outer wall can rotate the strap to the bottom of the shielding part 331, thereby improving the tightening effect of the strap on the end of the water pipe.

[0051] like Figure 2 As shown, the second bracket 3 includes a second shell cover 31 installed on the waterway plate 11, and the second shell cover 31 is fixed to the waterway plate 11 on all sides. The second through hole 32 is opened in the second shell cover 31 and faces the fluid interface 15. The shielding member 33 is located around the second through hole 32. In addition, an outwardly extending mounting bracket is also provided on the second shell cover 31 for assembly on different products.

[0052] like Figure 2 and Figure 6 As shown, the heating accessory 1 of the present application is preferably formed by welding a waterway plate 11 and a heat conducting plate 12, so that at least one continuous fluid cavity 14 is formed between the waterway plate 11 and the heat conducting plate 12, preferably a serpentine fluid cavity 14 is used, and a heating element 13 is installed on the side of the heat conducting plate 12 away from the waterway plate 11, heat is generated by the heating element 13, and the heat is transferred to the fluid cavity 14 through the heat conducting plate 12, so as to heat the water in the fluid cavity 14, the heating element 13 can adopt electric heating film, electric heating wire, preferably electric heating tube, such as U-shaped electric heating tube, the U-shaped electric heating tube is assembled on the heat conducting plate 12, and a temperature control unit 17 is installed at the bend of the U-shaped electric heating tube, the temperature control unit 17 can adopt an NTC thermistor electronic temperature controller, or it can be a mechanical temperature controller, such as a jump-type mechanical temperature controller, and its type is not limited.

[0053] A plurality of protrusions are also provided on the large surface of the heat conducting plate 12, and the plurality of protrusions together define the shape of an electric heating tube, so as to ensure that the plurality of protrusions can limit the position of the electric heating tube when the electric heating tube is welded, thereby improving the accuracy and efficiency of welding. Process holes and corresponding protrusions are provided on the heat conducting plate 12 and the waterway plate 11, so that when the heat conducting plate 12 and the waterway plate 11 are covered, the assembly position of the heat conducting plate 12 and the waterway plate 11 can be ensured, and the assembly can be unique to avoid reverse or misaligned covering, which may lead to problems such as subsequent welding disorder or loose welding.

[0054] like Figure 1 and Figure 2 As shown, a first bracket 2 is also installed on one side of the heat conducting plate 12. The first bracket 2 includes a first shell cover 21 and a connecting portion 22 arranged around the first shell cover 21. The connecting portion 22 is columnar, block-shaped or frame-shaped, and is fixed to the heat conducting plate 12. To ensure the structural space of the entire heating device, the first shell cover 21, the waterway plate 11, the heat conducting plate 12 and the second shell cover 31 are all installed and fixed around by the same fastener. A first through hole 23 is also opened in the middle of the first shell cover 21. The first through hole 23 is aligned with the temperature control unit 17 installed on the heat conducting plate 12, so as to facilitate timely observation and replacement of the temperature control unit 17.

[0055] like Figure 7 and Figure 8 As shown, a blocking portion 43 is provided at one end of the plug-in portion 41, and the blocking portion 43 is used to engage with the fluid interface 15. The blocking portion 43 is preferably welded or integrally formed on the plug-in portion 41, and the front end of the blocking portion 43 has an arc-shaped chamfer. When the plug-in portion 41 is extended into the fluid interface 15, the arc-shaped chamfer facilitates the blocking portion 43 to be extended into the fluid interface 15, and the blocking portion 43 has a step at one end facing the limiting portion 42, which can be stuck at the fluid interface 15 through the step when moving into the fluid interface 15, especially when the I-shaped seal 16 is installed at the fluid interface 15, the step and the limiting portion 42 are respectively clamped on the top and bottom sides of the seal 16.

[0056] The present application includes the following advantages: the water spout 4 can be directly removed and replaced from the second through hole 32 without the need for the second bracket 3, thereby improving the inspection and replacement of the water spout 4; at the same time, when the water spout 4 is assembled, the water spout 4 and the fluid interface 15 have an interference fit to ensure the sealing performance of the water spout 4 and the fluid interface 15, and to ensure that the water spout 4 is sealed at the fluid interface 15; the limiting portion 42 can be locked by fasteners to increase the pressing force of the water spout 4 on the fluid interface 15 to ensure the sealing of the connection; the shielding member 33 partially shields the second through hole 32 and is located on the periphery of the water spout 4, and the water spout 4 can lean against the inner wall of the shielding member 33 to keep the water spout 4 in a vertical state, thereby ensuring the installation position of the water spout 4 to prevent the water spout 4 from being installed in an inclined manner and affecting its sealing effect.

[0057] The water nozzle 4 can be switched between the first rotation position or the second rotation position, which is convenient for adjusting the position between the limiting portion 42 and the shielding member 33, ensuring that the water nozzle 4 can be locked in the fluid interface 15 or moved out of the fluid interface 15. The connection orientation of the water pipe limits the rotation direction of the water nozzle 4, ensuring that the water nozzle 4 is always in the second rotation position when in use to prevent the water nozzle 4 from falling off the fluid interface 15; a single C-shaped arc block and a limiting portion 42 that fills the gap in the C-shaped arc block are used to improve the space utilization rate of the equipment and reduce the bending degree of the water pipe connection to prevent water blockage.

[0058] When the second bracket 3 is installed on the heating accessory 1, the pressing portion 332 presses the edge of the seal 16, so that the seal 16 is always pressed against the fluid interface 15, thereby improving the sealing of the seal 16 at the fluid interface 15 and the faucet 4. At the same time, the edge of the seal 16 is pressed, and the middle part thereof can push up the limiting portion 42, so that the limiting portion 42 is close to the shielding portion 331, thereby improving the friction between the limiting portion 42 and the shielding portion 331. At the same time, a water pipe is installed at the top of the faucet 4, and the strap on the water pipe can be hung on the limiting portion 42. When the faucet 4 rotates, the limiting portion 42 of its outer wall can rotate the strap to the bottom of the shielding portion 331, thereby improving the tightening effect of the strap on the end of the water pipe.

[0059] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time.

[0060] like Figure 1 and Figure 2 As shown, a method for manufacturing a heating device, the manufacturing method comprising:

[0061] A metal plate is selected and stamped to form a waterway plate 11 with convex ribs. The heat conducting plate 12 covers the waterway plate 11 and is welded to form a heating accessory 1 with a fluid cavity 14. A heating element 13 and a temperature control element 17 are welded on one side of the heat conducting plate 12, wherein fluid interfaces 15 are provided at both ends of the convex rib. The convex rib has a serpentine orientation. After the waterway plate 11 and the heat conducting plate 12 are covered, laser welding can be adopted. Specifically, a continuous fluid cavity 14 needs to be welded on the periphery of the convex rib. Preferably, brazing is adopted, i.e. the waterway plate 11, the heat conducting plate 12 and the heating element 13 are brazed together. After the above two welding methods are completed, the temperature control element 17 can be installed.

[0062] like Figure 1 and Figure 2As shown, a seal 16 is assembled at the fluid interface 15, and a second bracket 3 and a first bracket 2 are respectively installed on the plate surfaces of the waterway plate 11 and the heat conducting plate 12; wherein, a second through hole 32 aligned with the fluid interface 15 is opened on the second bracket 3; the seal 16 is preferably I-shaped, and when the seal 16 is snapped onto the fluid interface 15, the first bracket 2 and the second bracket 3 can be installed on different plate surfaces of the heat conducting plate 12 and the waterway plate 11.

[0063] Insert the water nozzle 4 from the second through hole 32 and assemble it at the fluid interface 15. The water nozzle 4 can be cylindrical, L-shaped, T-shaped or Y-shaped. The water nozzle 4 can be directly inserted from the second through hole 32 as needed, and the plug-in part 41 can be extended into the fluid interface 15. The step of the blocking part 43 is below the seal 16, and the limiting part 42 is pressed on the top of the seal 16, so that the water nozzle 4 can be restricted at the seal 16. At this time, the water nozzle 4 is in the first rotation position. Then, when the water nozzle 4 is rotated from the first rotation position to the second rotation position, the assembly of the water nozzle 4 can be completed.

[0064] like Figures 2 to 5 As shown, when the faucet 4 is installed, the plug-in portion 41 is assembled on the seal 16, the blocking portion 43 is clamped on the bottom inner ring of the seal 16, and the limiting portion 42 is fitted on the top outer ring of the seal 16. Since there is a little pressure inside the fluid cavity 14, the step of the blocking portion 43 will gradually press on the seal 16 to ensure the stability of the faucet 4. At the same time, the plug-in portion 41 is separated from the heating surface of the fluid cavity 14 to avoid direct contact between the plug-in portion 41 and the heating surface of the fluid cavity 14, so as to avoid aggravating the aging and deformation of the seal 16 due to high temperature. If the faucet 4 is made of plastic material, the risk of deformation or melting of the faucet 4 can be avoided.

[0065] A household appliance is equipped with the above-mentioned heating device, and the household appliances include but are not limited to floor scrubbers, hanging irons, washing machines, dishwashers and other household heating appliances. Due to the small amount of water supply, this application preferably supplies non-drinking household appliances.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heating device, characterized in that: include: A heating accessory (1) comprising at least one fluid cavity (14) and fluid interfaces (15) arranged at two ends of the fluid cavity (14); A water nozzle (4) detachably connected to the fluid interface (15); and a second bracket (3), connected to a side of the heating accessory (1) facing the water nozzle (4), the second bracket (3) being provided with a second through hole (32), one end of the water nozzle (4) passing through and extending out of the second through hole (32); The water nozzle (4) can be moved in or out of the second through hole (32) and can be installed or disassembled on the fluid interface (15).

2. The heating device according to claim 1, characterized in that The second bracket (3) is provided with a shielding member (33) around the second through hole (32); the shielding member (33) partially shields the second through hole (32) and is located outside the water nozzle (4).

3. The heating device according to claim 2, characterized in that The water spout (4) comprises a plug-in portion (41) and a limiting portion (42) arranged on the outer wall of the water spout (4); the water spout (4) can be rotatably mounted at the second through hole (32) and can be switched to a first rotation position or a second rotation position; when the water spout (4) is in the first rotation position, the limiting portion (42) is misaligned with the shielding member (33), and the water spout (4) can be moved out of the fluid interface (15) along the thickness direction of the second bracket (3); when the water spout (4) is in the second rotation position, the limiting portion (42) overlaps with the shielding member (33) to limit the water spout (4) from moving out of the fluid interface (15) along the thickness direction of the second bracket (3).

4. The heating device according to claim 3, characterized in that The shielding member (33) comprises a shielding portion (331) arranged at the second through hole (32); when the water nozzle (4) is in the second rotation position, the shielding portion (331) is in a moving-out path of the limiting portion (42) along the thickness direction of the second bracket (3).

5. The heating device according to claim 4, characterized in that The shielding portion (331) is a blocking member connected to the second bracket (3) or a convex rib integrally formed on the second bracket (3).

6. The heating device according to any one of claims 2 to 5, characterized in that: The shielding member (33) comprises a pressing portion (332) arranged at the second through hole (32), and a sealing member (16) is also installed between the fluid interface (15) and the water nozzle (4). When the shielding member (33) and the heating accessory (1) are installed, the pressing portion (332) presses the sealing member (16) against the fluid interface (15).

7. The heating device according to claim 3, characterized in that The water nozzle (4) is cylindrical, L-shaped or T-shaped.

8. The heating device according to claim 3 or 7, characterized in that: A blocking portion (43) is provided at one end of the plug-in portion (41), and the blocking portion (43) is used to be engaged with the fluid interface (15).

9. A method for manufacturing a heating device, characterized in that: The preparation method comprises: A metal plate is selected and punched to form a waterway plate (11) with convex ribs. A heat conducting plate (12) covers the waterway plate (11) and is welded to form a heating accessory (1) with a fluid cavity (14). A heating element (13) is welded to one side of the heat conducting plate (12), wherein both ends of the convex ribs are provided with fluid interfaces (15); A sealing member (16) is assembled at the fluid interface (15), and a second bracket (3) and a first bracket (2) are respectively mounted on the plate surfaces of the waterway plate (11) and the heat conducting plate (12); wherein the second bracket (3) is provided with a second through hole (32) aligned with the fluid interface (15); The water nozzle (4) is inserted into the second through hole (32) and assembled at the fluid interface (15).

10. A household appliance, characterized in that: The household appliance is equipped with a heating device as described in any one of claims 1 to 8 or a heating device obtained by the manufacturing method as described in claim 9.

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