A steam generating assembly

Abstract

The utility model discloses a steam generation subassembly, it includes electric heating tube and the water pipe of coiling in the outer periphery of electric heating tube, and electric heating tube heats the water in water pipe into steam, and the outer periphery of water pipe is equipped with the heat insulation composite layer, and the heat insulation composite layer comprises metal protective layer, buffer layer, protective cover and plastic shell gradually from inside to outside, and the two wiring ends of electric heating tube extend out heat insulation composite layer, and the water inlet nozzle and steam export of water pipe extend out heat insulation composite layer. Compared with prior art, the heat insulation composite layer reduces the heat overflow of electric heating tube and water pipe, thereby realizes the energy -conserving purpose. The heat insulation composite layer reduces the surface temperature of steam generation subassembly, and the installation environment restriction of steam generation subassembly reduces.

Description

Technical Field

[0001] This utility model relates to the field of steam manufacturing technology, specifically to a steam generating component for use in household appliances. Background Technology

[0002] Chinese patent CN217685916U discloses an electric heating device, which includes an electric heating element and a water pipe disposed on the outer surface of the electric heating element. The water pipe includes a spiral protrusion extending spirally from one end to the other end. One end of the spiral protrusion has a water inlet, and the other end has a water outlet. Except for the spiral protrusion, the inner surface of the water pipe between the inlet and outlet is fixedly fitted to the outer surface of the electric heating element, forming a spiral water channel between the inner surface of the spiral protrusion and the outer surface of the electric heating element. However, it has the following drawbacks: to achieve instant heating of the water in the pipe to generate steam, the electric heating element is at a high temperature, and the gaps between the spiral water pipes cause heat loss, resulting in low thermal efficiency of the electric heating element and high overall energy consumption of the electric heating device. Moreover, the high-temperature environment generated by the operation of the electric heating device restricts the installation environment. Utility Model Content

[0003] The purpose of this invention is to provide an energy-saving steam generating component.

[0004] The purpose of this utility model is achieved as follows.

[0005] A steam generating assembly includes an electric heating element and a water pipe coiled around the outer periphery of the electric heating element. The electric heating element heats the water in the water pipe into steam. A heat insulation composite layer is provided around the outer periphery of the water pipe. The heat insulation composite layer includes, from the inside out, a metal protective layer, a buffer layer, a protective cover, and a plastic shell. The two terminals of the electric heating element extend beyond the heat insulation composite layer, and the water inlet and steam outlet of the water pipe extend beyond the heat insulation composite layer.

[0006] Furthermore, a mounting bracket is provided on the outer surface of the metal protective layer, and a temperature sensor is mounted on the mounting bracket. A first clearance hole is provided on the protective cover corresponding to the temperature sensor, and a second clearance hole is provided on the plastic outer shell corresponding to the temperature sensor. The temperature sensor detects the temperature of the steam generating component to ensure safe operation.

[0007] Furthermore, the metal protective layer includes a first sheet metal cover and a second sheet metal cover, both of which are semi-cylindrical. The first sheet metal cover and the second sheet metal cover are joined together to wrap the water pipe, and a heat insulation gap is left between the metal protective layer and the water pipe.

[0008] The metal protective layer protects the electric heating element and water pipe, and the heat insulation gap prevents heat from being directly transferred to the outside through the metal protective layer, thus reducing heat loss.

[0009] Furthermore, the first sheet metal cover is provided with the aforementioned fixing bracket, which has a mounting surface for installing the temperature sensor. The temperature sensor is installed stably and the temperature measurement is accurate.

[0010] Furthermore, the metal protective layer includes two end caps. The first sheet metal cover and the second sheet metal cover each have an end cap at their respective ends, and the end caps have a first through hole in the center for the wiring terminal to pass through.

[0011] The metal protective layer is easy to manufacture and facilitates the installation of electric heating elements and water pipes.

[0012] Furthermore, the buffer layer is an aerogel layer, the protective cover is a fiberglass cover, and the plastic shell is a high-temperature resistant plastic shell. This multi-layered insulation design reduces heat loss from the electric heating element, allowing heat to be absorbed by the water in the pipes, thus improving heat utilization efficiency. It also lowers the operating temperature of the steam generating assembly, which helps reduce installation limitations.

[0013] Furthermore, the protective cover includes a first protective cover and a second protective cover, both of which are semi-cylindrical. One of the first and second protective covers has a first annular recess at its open end, and the other has a first annular protrusion at its open end. The open ends of the first and second protective covers are aligned and closed, with the first annular protrusion inserted into the first annular recess. The two ends of the first and second protective covers form a second through hole for the wiring terminal to pass through. The first protective cover has the first clearance hole. The protective cover is simple and easy to assemble.

[0014] Furthermore, the plastic housing includes a first housing and a second housing, both of which are semi-cylindrical. One of the first and second housings has a second annular recess at its open end, and the other has a second annular protrusion at its open end. Semi-circular holes are provided at both ends of the first and second housings. The open ends of the first and second housings are aligned and closed, with the second annular protrusion inserted into the second annular recess. The two semi-circular holes form a third through hole for the terminal to pass through. The first housing has a second clearance hole. The plastic housing is simple and easy to assemble.

[0015] Furthermore, the first housing has a first ear on each end face, and the second housing has a second ear on each end face. The first and second ears are aligned vertically and connected and fixed by connectors. The steam generating assembly is simple to assemble and fix, and can be easily fixed inside the appliance by connectors.

[0016] Furthermore, the inner surface of the plastic shell is provided with raised ribs, which abut against the protective cover. This reduces the contact area between the plastic shell and the protective cover, facilitates assembly and fixation, improves heat insulation, and lowers the outer surface temperature of the steam generating component.

[0017] Compared to existing technologies, this invention reduces heat leakage from the electric heating element and water pipes through the thermal insulation composite layer, thereby achieving energy conservation. The thermal insulation composite layer also lowers the outer surface temperature of the steam generating assembly, reducing environmental restrictions on its installation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the steam generating assembly in Example 1.

[0019] Figure 2 This is an exploded structural diagram of the steam generating component in Example 1.

[0020] Figure 3 This is a schematic diagram of the axial cross-sectional structure of the steam generating assembly in Example 1.

[0021] Figure 4 This is a schematic diagram of the radial cross-sectional structure of the steam generating assembly in Example 1.

[0022] Figure 5 This is a schematic diagram of the steam generating assembly in use in Example 1. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1, see Figure 1-4 As shown, a steam generating assembly includes an electric heating element 1, a water pipe 2, and a heat-insulating composite layer 3. The water pipe 2 is spirally wound around the outer periphery of the electric heating element 1, and the heat-insulating composite layer 3 is disposed on the outer periphery of the water pipe 2. The electric heating element 1 heats the water in the water pipe 2 into steam or hot water. The two terminals of the electric heating element 1 extend beyond the heat-insulating composite layer 3, and the water inlet 21 and steam outlet 22 of the water pipe 2 also extend beyond the heat-insulating composite layer 3.

[0025] In this embodiment, the heat insulation composite layer 3 comprises, from the inside out, a metal protective layer 4, a buffer layer 30, a protective cover 6, and a plastic outer shell 7. The electric heating element 1 is a halogen tube, the water pipe 2 is a stainless steel pipe, the metal protective layer 4 is made of aluminum alloy or iron alloy (such as stainless steel), the buffer layer 30 is an aerogel layer, the protective cover 6 is a fiberglass cover, and the plastic outer shell 7 is a high-temperature resistant plastic outer shell, such as a PBT plastic outer shell.

[0026] A fixing bracket 5 is provided on the outer surface of the metal protective layer 4. A temperature sensor 50 is provided on the fixing bracket 5. A first clearance hole 66 is provided on the protective cover 6 corresponding to the temperature sensor 50, and a second clearance hole 76 is provided on the plastic shell 7 corresponding to the temperature sensor 50. Specifically, the metal protective layer 4 includes a first sheet metal cover 41, a second sheet metal cover 42, and two end caps 43. Both the first sheet metal cover 41 and the second sheet metal cover 42 are semi-cylindrical. The first sheet metal cover 41 and the second sheet metal cover 42 are closed to wrap around the water pipe 2, and a heat insulation gap 40 is left between the metal protective layer 4 and the water pipe 2. The fixing bracket 5 is provided on the first sheet metal cover 41, and the fixing bracket 5 has an mounting surface 51 for the temperature sensor 50 to be installed. An end cap 43 is provided at each end of the first sheet metal cover 41 and the second sheet metal cover 42. A first through hole 47 for the wiring terminal to pass through is provided in the center of the end cap 43. The fixing bracket 5 is a metal bracket, and the fixing bracket 5 and the first sheet metal cover 41 are welded and fixed.

[0027] In this embodiment, both the first sheet metal cover 41 and the second sheet metal cover 42 are provided with insertion holes 44 and pins 45. When the first sheet metal cover 41 and the second sheet metal cover 42 are closed, the pins 45 are inserted into the corresponding insertion holes 44. Both the first sheet metal cover 41 and the second sheet metal cover 42 are bent to have fixing parts 46, and the fixing parts 46 and the end caps 43 are fixed to the end faces of the first sheet metal cover 41 or the second sheet metal cover 42.

[0028] The protective cover 6 includes a first protective cover 61 and a second protective cover 62. Both the first protective cover 61 and the second protective cover 62 are semi-cylindrical. One of the first protective cover 61 and the second protective cover 62 has a first annular recess 64 at its open end and the other has a first annular protrusion 63 at its open end. The open ends of the first protective cover 61 and the second protective cover 62 are aligned and closed. The first annular protrusion 63 is inserted into the first annular recess 64. The two ends of the first protective cover 61 and the second protective cover 62 form a second through hole 65 for the wiring terminal to pass through. The first protective cover 61 is provided with the first clearance hole 66.

[0029] The inner surface of the plastic housing 7 is provided with a raised rib 70, and the plastic housing 7 abuts against the protective cover 6 through the raised rib 70. The plastic housing 7 includes a first housing 71 and a second housing 72, both of which are semi-cylindrical. One of the first housing 71 and the second housing 72 has a second annular recess 74 at its open end, and the other has a second annular protrusion 73 at its open end. The first housing 71 and the second housing 72 have semi-circular holes at both ends. The open ends of the first housing 71 and the second housing 72 are aligned and closed. The second annular protrusion 73 is inserted into the second annular recess 74. The two semi-circular holes form a third through hole 75 for the terminal to pass through. The first housing 71 is provided with a second clearance hole 76.

[0030] The first outer shell 71 has a first ear 77 on each of its two end faces, and the second outer shell 72 has a second ear 78 on each of its two end faces. The first ear 77 and the second ear 78 are aligned vertically and connected and fixed by a connector (such as a screw). Preferably, the first ear 77 and the second ear 78 are positioned vertically with concave and convex shapes.

[0031] See Figure 5 As shown, the connector secures the steam generating assembly within the appliance 8 via the first ear 77 and the second ear 78. The appliance 8 includes a water tank 81, the bottom of which is connected to the inlet 21 via a water supply pipe 82. A water pump 83 is mounted on the water supply pipe 82, and the steam outlet 22 of the water supply pipe 82 communicates with the heating chamber of the appliance 8. The water pump 83 pumps water from the water tank 81 into the water pipe 2 through the inlet 21. The electric heating element 1 heats the water in the water pipe 2 into steam, which then enters the heating chamber through the steam outlet 22.

[0032] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0033] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0034] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0035] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A steam generating assembly, comprising an electric heating element and a water pipe coiled around the outer periphery of the electric heating element, wherein the electric heating element heats water in the water pipe into steam, characterized in that, The water pipe is equipped with a heat insulation composite layer, which consists of a metal protective layer, a buffer layer, a protective cover and a plastic shell from the inside out. The two terminals of the electric heating element extend beyond the heat insulation composite layer, as do the water inlet and steam outlet of the water pipe.

2. The steam generating assembly according to claim 1, characterized in that, The outer surface of the metal protective layer is provided with a fixed bracket, and a temperature sensor is provided on the fixed bracket. The protective cover is provided with a first clearance hole corresponding to the temperature sensor, and the plastic shell is provided with a second clearance hole corresponding to the temperature sensor.

3. The steam generating assembly according to claim 2, characterized in that, The metal protective layer includes a first sheet metal cover and a second sheet metal cover. Both the first sheet metal cover and the second sheet metal cover are semi-cylindrical. The first sheet metal cover and the second sheet metal cover are closed to wrap around the water pipe, and a heat insulation gap is left between the metal protective layer and the water pipe.

4. The steam generating assembly according to claim 3, characterized in that, The first sheet metal cover is provided with the fixed bracket, and the fixed bracket is provided with a mounting surface for installing the temperature sensor.

5. The steam generating assembly according to claim 4, characterized in that, The metal protective layer includes two end caps. The first sheet metal cover and the second sheet metal cover each have an end cap at their respective ends. The end caps have a first through hole in the center for the wiring terminal to pass through.

6. The steam generating assembly according to claim 1, characterized in that, The buffer layer is an aerogel layer, the protective cover is a fiberglass cover, and the plastic shell is a high-temperature resistant plastic shell.

7. The steam generating assembly according to claim 2, characterized in that, The protective cover includes a first protective cover and a second protective cover. Both the first and second protective covers are semi-cylindrical. One of the first and second protective covers has a first annular recess at its open end, and the other has a first annular protrusion at its open end. The open ends of the first and second protective covers are aligned and closed. The first annular protrusion is inserted into the first annular recess. The two ends of the first and second protective covers form a second through hole for the wiring terminal to pass through. The first protective cover has the first clearance hole.

8. The steam generating assembly according to claim 2, characterized in that, The plastic housing includes a first housing and a second housing, both of which are semi-cylindrical. One of the first housing and the second housing has a second annular recess at its open end, and the other has a second annular protrusion at its open end. The first housing and the second housing have semi-circular holes at both ends. The open ends of the first housing and the second housing are aligned and closed. The second annular protrusion is inserted into the second annular recess. The two semi-circular holes form a third through hole for the terminal to pass through. The first housing has a second clearance hole.

9. The steam generating assembly according to claim 1, characterized in that, The first outer shell has a first ear on each of its two end faces, and the second outer shell has a second ear on each of its two end faces. The first ear and the second ear are aligned vertically and connected and fixed by a connector.

10. The steam generating assembly according to claim 1, characterized in that, The inner surface of the plastic shell has raised ribs, which abut against the protective cover.

Images