Steam generator module

Abstract

The utility model discloses a steam generator module, including shell, set up in shell be used for heating fluid heating system and be used for controlling fluid to enter and discharge heating system's fluid system, the heating system includes electric heating main part and sets up on electric heating main part electric heating pipe, be equipped with the chamber without partition in electric heating main part, the water inlet and water outlet that electric heating main part both ends are equipped with with chamber intercommunication, the position of between the water inlet and water outlet in the chamber is provided with filter system, the utility model discloses optimization internal structure and filter screen, improve the steam production efficiency, reach the purpose that both filter scale and do not block product channel simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a steam generator module that can be used in household appliances such as steam ovens, steam ovens, and range hoods. Background Technology

[0002] Currently available electric steam heating products are prone to scale buildup when heating liquids, especially in northern regions with high water hardness, leading to internal blockages and damage. Analysis of existing electric steam heating products reveals several design flaws. For example, utility model patent application number 201520896760.5 discloses a steam generator with an internal vertical baffle design that obstructs water flow, creating separate sections for heating and steaming, resulting in continuous scale accumulation. Another example is the internal vertical scale-blocking device (stainless steel mesh) that separates the cavity, creating blockages. When scale blocks one of these devices, water cannot pass through, rendering the product unusable. These design flaws lead to numerous practical problems. Utility Model Content

[0003] The purpose of this invention is to provide a steam generator module. This invention optimizes the internal structure and filter screen, thereby improving steam generation efficiency while achieving the goal of filtering scale without clogging the product channel.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a steam generator module, including a housing, a heating system disposed within the housing for heating fluid, and a fluid system for controlling the entry and exit of fluid into and out of the heating system. The heating system includes an electric heating body and an electric heating tube disposed on the electric heating body. The electric heating body has an open chamber, and the electric heating body has an inlet and an outlet at both ends that communicate with the chamber. A filtration system is disposed in the chamber at a position corresponding to the inlet and outlet.

[0005] By adopting the above technical solution and optimizing the internal structure, the inner surface of the chamber is unobstructed, thereby minimizing structural dead corners and achieving full contact between the liquid and the inner surface of the chamber, thus accelerating steam generation and improving steam efficiency.

[0006] The present invention is further configured such that the filtration system includes a filter element A with multiple filter holes on its surface, the filter element A is vertically arranged in the cavity of the outer shell, and the cavity is divided into a pre-filter cavity connected to the water inlet and a post-filter cavity connected to the water outlet. The outer shell is also provided with an ejector channel, the inlet end of the ejector channel is connected to the water inlet, and the outlet end of the ejector channel is arranged facing the filter element A.

[0007] By adopting the above technical solution, this design is the first setting method of the filtration system. After the fluid is ejected through the outlet end of the ejector channel, it flushes the filter element A, thereby reducing the risk of filter element A clogging.

[0008] The present invention is further configured such that the filter element A is made of an anti-stick material or a surface coated with an anti-stick material.

[0009] By adopting the above technical solution, solid impurities can be effectively prevented from adhering to the surface of filter element A, thereby further preventing the clogging of filter element A.

[0010] The present invention is further configured such that the filter element A includes a filter body and a flow guide portion disposed in the middle of the filter body and protruding towards the ejection channel, wherein the protruding surface of the flow guide portion is spherical.

[0011] By adopting the above technical solution, the flow guide can flush impurities onto the filter body, while the filter holes on the flow guide can always allow fluid to pass through, thereby effectively avoiding clogging.

[0012] The present invention is further configured such that the filtration system includes multiple layers of filter screens, the filter screens are disposed in the cavity of the electric heating body by means of a limiting structure, and in the direction of fluid movement, each two adjacent filter screens are vertically staggered, and a flow channel is formed between each two adjacent filter screens, and the multiple flow channels gradually rise in the direction of fluid flow.

[0013] By adopting the above technical solution, filtration is carried out layer by layer from low to high, and a flow channel is designed between each layer of filtration. This achieves the dual purpose of using gravity to settle coarse foreign objects while filtering them through the filtration system, thereby effectively reducing the risk of foreign objects flowing out and clogging the nozzles.

[0014] The present invention is further configured such that the mesh size of the filter screens arranged sequentially in the direction of fluid flow gradually decreases.

[0015] By adopting the above technical solution, filter meshes of varying sizes are used, arranged from coarse to fine and from low to high, for layer-by-layer filtration. The final layer of the filtration system, connected to the outlet, is treated with anti-stick materials or processes, thereby further reducing the risk of clogging and protecting the discharge pipe from blockage.

[0016] The present invention is further configured such that the electric heating body includes a hollow electric heating shell with an open upper end and a cover plate installed at the open end of the electric heating shell, and a sealing element is sandwiched between the cover plate and the electric heating shell.

[0017] By adopting the above technical solution, the split structure of the electric heating body facilitates the installation of internal components. At the same time, by setting a seal between the cover plate and the electric heating shell, the sealing of the connection structure between the two can be guaranteed, and leakage of internal media can be avoided.

[0018] The present invention is further configured such that the cover plate is welded to the upper opening of the heating housing, and the distance between the welded joint of the cover plate and the heating housing and the sealing element is between 0.5 and 5 mm.

[0019] By adopting the above technical solution, even if there are pores or gaps in the weld, there will be no leakage because of the sealing element; the distance between the sealing element and the weld ensures the weld's firmness while preventing the sealing element from melting and being damaged.

[0020] The present invention is further configured such that the outer shell includes a hollow main shell with an opening at the lower end and a bottom plate disposed at the opening end of the main shell, the bottom plate is provided with multiple cold air inlets, the top of the main shell is provided with multiple hot air outlets, and a flow guiding channel is provided between the electric heating body and the outer shell.

[0021] By adopting the above technical solution and utilizing the principle of air thermal rise and cooling drop, an air heat-resistant and guiding channel is formed, thereby reducing the shell temperature and saving the cost of insulation materials.

[0022] The present invention is further configured such that an mounting plate is provided on the inner side of the main housing corresponding to the position above the bottom plate, and the electric heating body is disposed on the mounting plate.

[0023] By adopting the above technical solution, this is the first way to set up the electric heating body, which avoids the electric heating body and its connecting parts being exposed, further reduces heat transfer from the solid, thereby effectively reducing temperature transfer and reducing the temperature rise of the metal casing.

[0024] The present invention is further configured such that the inner side of the main housing is provided with a plurality of vertically extending mounting brackets, and the electric heating body is vertically slidably connected to the plurality of mounting brackets.

[0025] By adopting the above technical solution, this is the second way to set up the electric heating body. It can not only effectively reduce temperature transfer and reduce the temperature rise of the metal shell, but also make the installation very convenient. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first embodiment of the filtration system of this utility model;

[0027] Figure 2 This is a schematic diagram of the second embodiment of the filtration system of this utility model;

[0028] Figure 3 This is a bottom view of the entire utility model;

[0029] Figure 4 This is a front view of the entire utility model;

[0030] Figure 5 This is a top view of the entire utility model.

[0031] In the picture:

[0032] 1. Outer shell; 11. Main shell; 12. Base plate; 13. Cold air inlet; 14. Hot air outlet; 15. Airflow channel; 16. Mounting plate; 17. Mounting bracket;

[0033] 2. Heating system; 21. Heating body; 211. Heating shell; 212. Cover plate; 213. Sealing element; 214. Welding joint; 22. Heating tube; 23. Chamber; 231. Pre-filter chamber; 232. Post-filter chamber; 24. Inlet; 25. Outlet; 26. Ejector channel;

[0034] 3. Fluid systems;

[0035] 4. Filtration system; 41. Filter element A; 411. Filter holes; 412. Filter body; 413. Inlet section; 42. Filter screen; 421. Filter screen a; 422. Filter screen b; 423. Filter screen c; 424. Filter screen d; 43. Flow channel;

[0036] 5. Limiting structure; 51. Limiting structure a; 52. Limiting structure b; 53. Limiting structure c; 54. Limiting structure d. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example: As attached Figures 1-5The steam generator module shown includes a housing 1, a heating system 2 disposed within the housing 1 for heating fluid, and a fluid system 3 for controlling the entry and exit of fluid into and out of the heating system 2. The fluid system 3 includes an inlet pipe a, an inlet pipe b, a water pump, and an outlet pipe. The inlet pipe a and inlet pipe b are respectively connected to the inlet and outlet ends of the water pump. The heating system 2 includes an electric heating body 21 and an electric heating tube 22 cast onto the electric heating body 21. The electric heating body 21 has an open chamber 23. The electric heating body 21 has an inlet 24 and an outlet 25 at both ends that communicate with the chamber 23. The inlet 24 and outlet 25 are respectively connected to the inlet pipe b and the outlet pipe via adapters (connectors). A filtration system 4 is disposed in the chamber 23 at a position corresponding to the position between the inlet 24 and the outlet 25. The internal structure is optimized so that the inner surface of chamber 23 is unobstructed, thereby minimizing structural dead corners and achieving full contact between the liquid and the inner surface of chamber 23, thus accelerating steam generation and improving steam efficiency.

[0039] Filter system 4 has the following two settings:

[0040] (I) As attached Figure 1 As shown, the first configuration of the filtration system 4 is as follows: The filtration system 4 includes a filter element A41 with multiple filter holes 411 on its surface. The filter element A41 is vertically arranged in the chamber 23 of the outer shell 1, dividing the chamber 23 into a pre-filter chamber 231 connected to the inlet 24 and a post-filter chamber 232 connected to the outlet 25. The outer shell 1 is also provided with an ejector channel 26. The inlet end of the ejector channel 26 is connected to the inlet 24, and the outlet end of the ejector channel 26 faces the filter element A41. After the fluid is ejected through the outlet end of the ejector channel 26, it flushes the filter element A41. This scheme combines filtration and cleaning, achieving simultaneous filtration and cleaning, thereby reducing the risk of clogging of the filter element A41.

[0041] The filter element A41 is made of an anti-stick material or has an anti-stick coating. This design effectively prevents solid impurities from adhering to the surface of the filter element A41, thereby further preventing clogging of the filter element A41.

[0042] As attached Figure 1 As shown, the filter element A41 includes a filter body 412 and a flow guide 413 protruding from the middle of the filter body 412 toward the ejector channel 26. The protruding surface of the flow guide 413 is spherical. The flow guide 413 can flush impurities onto the filter body 412, while the filter holes 411 on the flow guide 413 can always allow fluid to pass through, thereby effectively preventing clogging.

[0043] (II) As attached Figure 2As shown, the second setting method of the filtration system 4 is as follows: The filtration system 4 includes multiple layers of filter screens 42, which are horizontally placed. The filter screens 42 are arranged in the chamber 23 of the electrothermal main body 21 through the limiting structure 5. And in the fluid movement direction, every two adjacent filter screens 42 are vertically offset, and an overcurrent channel 43 is formed between every two adjacent filter screens 42. And multiple overcurrent channels 43 gradually rise in the fluid flow direction. Filter layer by layer from low to high, and design overcurrent channels 43 between each layer of filtration, so as to achieve the dual filtration purpose of using gravity to settle coarse and heavy foreign matters and filtering foreign matters through the filtration system 4 at the same time, thereby effectively reducing the risk of foreign matters flowing out and blocking the nozzle.

[0044] More specifically, the multiple layers of filter screens 42 are composed of filter screen a421, filter screen b422, filter screen c423 and filter screen d424, and the limiting structure 5 is composed of limiting structure a51, limiting structure b52, limiting structure c53 and limiting structure d54 (which can be a convex structure integrally provided with the electrothermal main body 21); The limiting structure a51, limiting structure b52, limiting structure c53 and limiting structure d54 are of different heights and are arranged staggered with each other to form steps that can be placed layer by layer. The filter screen a421, filter screen b422, filter screen c423 and filter screen d424 correspond to the limiting structure 5. The corresponding filter screen 42 is placed in the limiting structure 5, and fixation can be achieved by interference fit, plug-in fit, fastener connection and other methods, so as to form a layer-by-layer filtration system 4 from low to high with different heights. Among them, there are overcurrent channels 43 between the filter screen a421 and the filter screen b422, between the filter screen b422 and the filter screen c423, and between the filter screen c423 and the filter screen d424. Finally, the filter screen d424 has only one overcurrent channel 43 connected to the water outlet 25 for steam to flow out from the electrothermal main body 21.

[0045] Among them, each filter screen 42 is made of an anti-sticking material or is subjected to anti-sticking treatment.

[0046] In addition, the filtration system 4 can also be designed into different schemes such as a "return" shape or a U shape.

[0047] Moreover, in this solution, the mesh holes of the filter screens 42 arranged in sequence in the fluid flow direction gradually become smaller. Use filter screens 42 with different sizes of holes, place the holes from thick to thin from low to high, and filter layer by layer. The last layer of the filtration system 4 connected to the outlet is made of an anti-sticking material or is treated by a process, so as to further reduce the risk of blockage of the filtration system 4 and protect the discharge pipeline from blockage at the same time.

[0048] As attached Figure 2As shown, the structure of the heating element 21 includes a hollow heating shell 211 with an open top and a cover plate 212 installed at the open end of the heating shell 211. The two are assembled together by fasteners such as screws, and a sealing element 213, i.e., an annular sealing gasket, is sandwiched between the cover plate 212 and the heating shell 211. The heating element 213 has a split structure, which facilitates the installation of internal components. At the same time, by providing a sealing element 213 between the cover plate 212 and the heating shell 211, the sealing of the connection structure between the two can be guaranteed, preventing leakage of internal media.

[0049] As attached Figure 2 As shown, the cover plate 212 is welded to the upper opening of the heating housing 211, and the distance between the weld 214 of the cover plate 212 and the heating housing 211 and the seal 213 is between 0.5 and 5 mm. Even if there are pores or gaps in the weld, there will be no leakage because of the seal 213; the distance between the seal 213 and the weld ensures the weld's firmness while preventing the seal 213 from melting and being damaged.

[0050] As attached Figures 2-5 As shown, the outer casing 1 includes a hollow main casing 11 with an open lower end and a base plate 12 disposed at the open end of the main casing 11. The base plate 12 has multiple cold air inlets 13, and the top of the main casing 11 has multiple hot air outlets 14. A flow channel 15 is provided between the electric heating element 21 and the outer casing 1, i.e., an isolation space greater than 2mm between the electric heating element 21 and the outer casing 1. Utilizing the principle of air thermal rise and cooling, an air heat-resistant flow channel 15 is formed. Cold air enters from the cold air inlets 13, and after sufficient heat exchange in the flow channel 15, it is discharged through the hot air outlets 14, thereby reducing the temperature of the outer casing 1 and saving on insulation material costs.

[0051] The electric heating element 21 has two installation methods.

[0052] One feature is that an mounting plate 16 is provided on the inner side of the main housing 11, corresponding to the position above the bottom plate 12. The electric heating body 21 is mounted on the mounting plate 16, which avoids the electric heating body 21 and its connecting parts from being exposed, further reducing heat transfer from the solid, thereby effectively reducing temperature transfer and reducing the temperature rise of the metal casing 1.

[0053] Secondly, the main housing 11 has multiple vertically extending mounting brackets 17 on its inner side. The electric heating body 21 can be vertically slidably connected to the multiple mounting brackets 17, which not only effectively reduces temperature transfer and reduces the temperature rise of the metal shell 1, but also makes installation very convenient.

Claims

1. A steam generator module, comprising a housing (1), a heating system (2) disposed within the housing (1) for heating a fluid, and a fluid system (3) for controlling the entry and exit of the fluid into and out of the heating system (2), wherein the heating system (2) comprises an electric heating element (21) and an electric heating tube (22) disposed on the electric heating element (21); characterized in that: The electric heating body (21) has an open chamber (23) inside. The electric heating body (21) has an inlet (24) and an outlet (25) at both ends that communicate with the chamber (23). A filtration system (4) is provided in the chamber (23) at the position between the inlet (24) and the outlet (25).

2. The steam generator module according to claim 1, characterized in that: The filtration system (4) includes a filter element A (41) with multiple filter holes (411) on its surface. The filter element A (41) is vertically arranged in the chamber (23) of the outer shell (1) and divides the chamber (23) into a pre-filter chamber (231) connected to the inlet (24) and a post-filter chamber (232) connected to the outlet (25). The outer shell (1) is also provided with an ejector channel (26). The inlet end of the ejector channel (26) is connected to the inlet (24), and the outlet end of the ejector channel (26) is arranged facing the filter element A (41).

3. The steam generator module according to claim 2, characterized in that: The filter element A (41) is made of non-stick material or surface coated with non-stick material.

4. The steam generator module according to claim 2, characterized in that: The filter element A (41) includes a filter body (412) and a drainage portion (413) disposed in the middle of the filter body (412) and protruding in the direction of the ejection channel (26), wherein the protruding surface of the drainage portion (413) is spherical.

5. The steam generator module according to claim 1, characterized in that: The filtration system (4) includes multiple layers of filter screens (42). The filter screens (42) are set in the chamber (23) of the electric heating body (21) by a limiting structure (5). In the direction of fluid movement, each pair of adjacent filter screens (42) are vertically staggered, and a flow channel (43) is formed between each pair of adjacent filter screens (42). The multiple flow channels (43) gradually rise in the direction of fluid flow.

6. The steam generator module according to claim 5, characterized in that: The mesh size of the filter screens (42) arranged sequentially in the direction of fluid flow gradually decreases.

7. The steam generator module according to claim 1, characterized in that: The electric heating body (21) includes a hollow electric heating shell (211) with an open top and a cover plate (212) installed at the open end of the electric heating shell (211), and a sealing element (213) is sandwiched between the cover plate (212) and the electric heating shell (211).

8. The steam generator module according to claim 7, characterized in that: The cover plate (212) is welded to the upper opening of the heating shell (211), and the distance between the weld (214) of the cover plate (212) and the heating shell (211) and the seal (213) is between 0.5 and 5 mm.

9. The steam generator module according to claim 1, characterized in that: The outer shell (1) includes a hollow main shell (11) with an opening at the lower end and a bottom plate (12) disposed at the opening end of the main shell (11). The bottom plate (12) is provided with multiple cold air inlets (13), and the top of the main shell (11) is provided with multiple hot air outlets (14). A flow channel (15) is provided between the electric heating body (21) and the outer shell (1).

10. The steam generator module according to claim 9, characterized in that: An mounting plate (16) is provided on the inner side of the main housing (11) at a position above the bottom plate (12), and the electric heating body (21) is mounted on the mounting plate (16); a plurality of vertically extending mounting brackets (17) are provided on the inner side of the main housing (11), and the electric heating body (21) is vertically slidably connected to the plurality of mounting brackets (17).

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