Steam treatment device and electric water heater

Abstract

The utility model relates to a kind of steam treatment device and electric water heater, belong to water heater field, steam treatment device includes: water storage tank body, water storage tank body is equipped with water storage cavity, water storage tank body is equipped with the water tank water replenishing port being communicated with water storage cavity;Steam treatment component, steam treatment component is set on water storage tank body, steam treatment component is equipped with condensing space, condensing space is communicated with water storage cavity, steam treatment component is equipped with the first output port being communicated with condensing space;Backflow structure, backflow structure is connected with steam treatment component and water storage tank body respectively, backflow structure is communicated with the first output port, backflow structure is communicated with the water tank water replenishing port.This application discloses steam treatment device can effectively liquefy the steam generated by water storage cavity by the condensing space of steam treatment component setting, liquid water after condensation is re-delivered to the water tank water replenishing port by the first output port of backflow structure, can avoid the waste of water resources caused by steam direct discharge, realize the recycling of water resources.

Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to a steam treatment device and an electric water heater. Background Technology

[0002] Steam is typically generated during the heating process of an electric water heater. If this steam cannot be released in time, it can lead to excessively high pressure in the water tank, affecting the product's safety. Traditional electric water heaters generally release steam directly or do not have a steam release mechanism. However, direct steam release causes a continuous decrease in the water level in the tank, significantly accelerating the drop in water level and drastically increasing the frequency of water replenishment, resulting in water waste. Utility Model Content

[0003] Therefore, it is necessary to provide a steam treatment device and an electric water heater to address the problem that the direct discharge of steam from traditional electric water heaters leads to a continuous decrease in the water volume in the tank, resulting in a significant increase in the frequency of water replenishment and water waste.

[0004] A steam treatment device includes: a water storage tank having a water storage cavity and a water tank inlet communicating with the water storage cavity; a steam treatment assembly mounted on the water storage tank, having a condensation space communicating with the water storage cavity and a first output port communicating with the condensation space; and a reflux structure connected to both the steam treatment assembly and the water storage tank, communicating with the first output port and the water tank inlet.

[0005] The first aspect of this application discloses a steam treatment device. The condensation space within the steam treatment assembly effectively liquefies the steam generated in the water storage chamber. A reflux structure then re-transports the condensed liquid water through a first output port back to the water tank's replenishment port, preventing water waste caused by direct steam discharge and achieving water recycling. This design automatically replenishes the water in the storage chamber, reducing the need for manual intervention. The steam treatment assembly is mounted on the water storage tank, and the condensation space is directly connected to the storage chamber, forming a compact and efficient steam treatment system that ensures reliable operation. This steam treatment device not only promptly releases steam from the storage chamber to prevent pressure buildup and reduced safety of the tank, but also prevents rapid water loss that could lead to scale buildup and increased cleaning complexity. In some applications, such as installing electric heating elements and hot water pipes within a water storage chamber, the heating elements heat the water in the chamber, while cold water transported through the hot water pipes is heated by the hot water bath in the storage chamber. In such applications, this design can also prevent significant water loss that could lead to a rapid increase in water hardness in the storage tank, thus reducing scale buildup on the surface of the heating elements and minimizing the possibility of pipe bursts, effectively extending the product's lifespan. Furthermore, it prevents a decrease in the heat exchange efficiency of the hot water pipes, reduces the risk of corrosion in both the heating elements and the hot water pipes, and effectively improves the heat exchange performance of the hot water pipes.

[0006] In one embodiment, the steam treatment assembly includes a steam treatment chamber, a baffle assembly, and a cover assembly. The steam treatment chamber is disposed on the water storage tank and has the first output port. The baffle assembly is disposed on the steam treatment chamber and located inside the steam treatment chamber. The cover assembly is disposed on the steam treatment chamber, and the steam treatment chamber, the baffle assembly, and the cover assembly enclose the condensation space. The condensation space formed by the steam treatment chamber, the baffle assembly, and the cover assembly ensures the stability and reliability of the steam treatment process. The baffle assembly cleverly alters the steam flow path, allowing high-temperature steam to remain sufficiently within the condensation space and contact the cooling surface, significantly improving condensation efficiency.

[0007] In one embodiment, the steam treatment chamber has an opening communicating with the condensation space, and the cover assembly is disposed on the steam treatment chamber and covers the opening. The mating structure between the cover assembly and the opening ensures the airtightness of the condensation space, preventing steam leakage from affecting processing efficiency, and also facilitates maintenance and cleaning of the interior of the condensation space by disassembling the cover assembly.

[0008] In one embodiment, the steam treatment chamber is provided with a steam flow hole, and the water storage chamber, the steam flow hole, and the condensation space are sequentially connected. This sequential connection allows steam generated in the water storage chamber to be transported to the steam treatment chamber for condensation and reflux treatment, preventing excessive pressure in the water storage chamber from affecting the safety of the equipment. Furthermore, compared to designs that directly discharge steam into the external atmosphere, this design enables the recycling of steam.

[0009] In one embodiment, the cover assembly includes a condenser plate and a cover plate, both disposed on the steam treatment chamber and arranged adjacent to each other. The condenser plate rapidly liquefies the steam through its cooling surface, and the liquefied water droplets naturally fall back to the bottom of the condensation space under gravity. The tight fit between the cover plate and the condenser plate ensures both the airtightness of the condensation process and maintains a stable internal working environment. This design allows for directional steam flow and concentrated condensation, while the liquefied water smoothly returns to the water storage tank through a reflux structure, achieving efficient steam recovery and utilization.

[0010] In one embodiment, the cover assembly is made of a thermally conductive material. By using a thermally conductive material, the high-temperature steam can be cooled, causing it to liquefy into water droplets and fall back into the condensation space, thus achieving steam recycling and avoiding water waste.

[0011] In one embodiment, the steam treatment chamber has a first side wall, a second side wall, and a bottom wall. The blocking assembly includes a first baffle and a second baffle. The first baffle is connected to the bottom wall and / or the first side wall, and extends towards the second side wall. The second baffle is connected to the bottom wall and / or the second side wall, and extends towards the first side wall. The first side wall, the second side wall, the bottom wall, the first baffle, the second baffle, and the cover assembly enclose the condensation space. The arrangement of the first and second baffles creates a tortuous steam channel within the condensation space, constructing an optimized steam flow path that forces the steam to continuously change direction during flow. This design extends the residence time of steam in the condensation space, prolongs the cooling time, and increases the success rate of steam liquefaction into water droplets, thereby improving the steam recycling rate. This staggered baffle structure significantly improves steam condensation efficiency without increasing the device volume.

[0012] In one embodiment, there are multiple first baffles, all disposed on the first side cavity wall, arranged sequentially along the length of the first side cavity wall. Similarly, there are multiple second baffles, all disposed on the second side cavity wall, arranged sequentially along the length of the second side cavity wall. The first and second baffles are arranged alternately. By having first baffles on the first side cavity wall and second baffles on the second side cavity wall, and by alternating between the first and second baffles, the residence time of steam in the condensation space is extended, the cooling time of the steam is prolonged, and the steam recycling rate is improved.

[0013] In one embodiment, the first side cavity wall and the second side cavity wall are disposed opposite to each other. By disposing the first side cavity wall and the second side cavity wall opposite to each other, a stable steam treatment cavity structure is formed, avoiding local steam accumulation or flow dead zones.

[0014] In one embodiment, the bottom cavity wall is inclined relative to the water storage tank, and the height of the first end of the bottom cavity wall relative to the horizontal plane is lower than the height of the second end of the bottom cavity wall relative to the horizontal plane. The first outlet is located at or near the first end of the bottom cavity wall. By inclining the bottom cavity wall relative to the water storage tank, the condensed liquid water can flow naturally towards the lower first end of the bottom cavity wall under gravity and be smoothly discharged through the first outlet located there. This design achieves automatic collection and discharge of condensate, preventing condensate from accumulating on the bottom cavity wall and affecting the subsequent steam condensation effect.

[0015] In one embodiment, the steam treatment chamber includes a chamber body, a first output pipe, and a second output pipe. The chamber body is disposed on the water storage tank. Both the first and second output pipes are disposed on the chamber body. The first output pipe is located at or near the first end of the bottom cavity wall and has a first output port. The second output pipe is located at or near the second end of the bottom cavity wall and has a second output port, which communicates with the condensation space. Through the rational arrangement of the first and second output pipes, effective separation and export of media in different states within the condensation space are achieved. The first output pipe, located at the lower end of the bottom cavity wall, can be used to export condensed liquid water, ensuring that the condensate can be completely discharged by gravity. The second output pipe, located at the higher end, is used to handle incompletely condensed residual steam or other gaseous media, preventing excessive pressure in the condensation space from causing safety issues and avoiding chain reactions such as the inability of steam to be discharged from the water storage tank.

[0016] In one embodiment, the water storage tank includes a tank body, a reflux connector, and a vent connector. The tank body has a water storage chamber. Both the reflux connector and the vent connector are located on the tank body. The reflux connector has a water inlet, and the vent connector has a vent hole. The steam treatment component is located on the vent connector and at the vent hole. The reflux connector is used for the reflux replenishment of condensate, ensuring that the condensate can smoothly return to the water storage chamber. The vent connector is used for steam export, and the direct connection between the vent hole and the steam treatment component enables efficient steam output.

[0017] In one embodiment, the return connector is located at or near the bottom of the water storage tank. By placing the return connector at the bottom of the water storage tank, condensate can naturally flow back under gravity, ensuring a smooth and efficient water replenishment process. Furthermore, the water temperature at the bottom of the water storage tank is lower, preventing hot water from dissipating heat through convection in the condensation space.

[0018] In one embodiment, the vent connector is located at or near the top of the water storage tank. By placing the vent connector in the top area of ​​the water storage tank, the natural upward movement of steam is fully utilized to achieve rapid collection and discharge of steam.

[0019] An electric water heater includes: a housing assembly having an assembly cavity; and the aforementioned steam treatment device disposed on the housing assembly and located within the assembly cavity.

[0020] The second aspect of this application discloses an electric water heater that optimizes the overall structure by integrating a steam treatment device into the assembly cavity of the housing component. By closely integrating the steam treatment process with the water heater's operation, steam can immediately enter the processing flow after generation, improving the water heater's response speed and processing efficiency. This design effectively maintains the product's safety and stability. Attached Figure Description

[0021] Figure 1 This is a first perspective view of the steam treatment unit;

[0022] Figure 2 This is a second perspective view of the steam treatment device;

[0023] Figure 3 This is an exploded view of a steam treatment unit;

[0024] Figure 4 A first perspective view of the steam treatment assembly;

[0025] Figure 5 This is a second perspective view of the steam treatment assembly;

[0026] Figure 6 This is a third perspective view of the steam treatment assembly;

[0027] Figure 7 First exploded view of the steam treatment assembly;

[0028] Figure 8 This is a second exploded view of the steam treatment assembly;

[0029] Figure 9 This is a first perspective view of the steam treatment chamber.

[0030] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0031] Figure 11 This is a second perspective view of the steam treatment chamber;

[0032] Figure 12 A three-dimensional view of the water storage tank;

[0033] Figure 13 This is an exploded view of the water storage tank.

[0034] Figure 14 This is a 3D diagram of an electric water heater.

[0035] The correspondence between the reference numerals and the component names is as follows:

[0036] 1 Water storage tank, 11 Water tank body, 12 Return connector, 13 Air outlet connector, 101 Water storage chamber, 102 Water tank inlet, 103 Vent hole;

[0037] 2 Steam treatment assembly, 21 Steam treatment chamber, 211 Chamber body, 212 First output pipe, 213 Second output pipe, 22 Blocking assembly, 221 First baffle, 222 Second baffle, 23 Cover assembly, 231 Condensing plate, 232 Cover, 201 Condensation space, 202 First output port, 203 Opening, 204 Steam flow hole, 205 First side cavity wall, 206 Second side cavity wall, 207 Bottom cavity wall, 208 Second output port;

[0038] 3. Reflux structure;

[0039] 100 housing assembly. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] Example 1

[0043] like Figure 1-13 As shown, this embodiment discloses a steam treatment device, including: a water storage tank 1, the water storage tank 1 having a water storage cavity 101, the water storage tank 1 having a water tank inlet 102 communicating with the water storage cavity 101; a steam treatment component 2, the steam treatment component 2 being disposed on the water storage tank 1, the steam treatment component 2 having a condensation space 201 communicating with the water storage cavity 101, the steam treatment component 2 having a first output port 202 communicating with the condensation space 201; and a reflux structure 3, the reflux structure 3 being connected to the steam treatment component 2 and the water storage tank 1 respectively, the reflux structure 3 communicating with the first output port 202, and the reflux structure 3 communicating with the water tank inlet 102.

[0044] The first aspect of this application discloses a steam treatment device. The condensation space 201 of the steam treatment component 2 effectively liquefies the steam generated in the water storage chamber 101. The reflux structure 3 then re-transports the condensed liquid water to the water tank replenishment port 102 through the first output port 202, avoiding water waste caused by direct steam discharge and achieving water recycling. This design automatically replenishes the water in the water storage chamber 101, reducing the need for manual intervention. The steam treatment component 2 is mounted on the water storage tank 1, and the condensation space 201 is directly connected to the water storage chamber 101, forming a compact and efficient steam treatment system that ensures the reliability of the device operation. The steam treatment device of this application not only promptly releases steam from the water storage chamber 101 to prevent pressure buildup that could reduce the safety of the water storage tank 1, but also prevents rapid water loss that could lead to scale buildup in the water storage tank 1, increasing the complexity of cleaning. In some applications, such as installing electric heating elements and hot water pipes within the water storage chamber 101, the electric heating elements heat the water in the storage chamber 101. When cold water is transported through the hot water pipes, it is heated by the hot water bath in the storage chamber 101, turning it into hot water. In such applications, this design can also prevent significant water loss that would cause a rapid increase in water hardness in the storage tank 1, thus reducing scale buildup on the surface of the electric heating elements. This avoids or reduces the possibility of the electric heating elements and hot water pipes bursting, effectively extending the product's lifespan. Furthermore, it prevents a decrease in the heat exchange efficiency of the hot water pipes, reduces the risk of corrosion of the electric heating elements and hot water pipes, and effectively improves the heat exchange effect of the hot water pipes.

[0045] like Figure 7 and Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further defines the following: the steam treatment assembly 2 includes a steam treatment chamber 21, a blocking assembly 22, and a cover assembly 23. The steam treatment chamber 21 is disposed on the water storage tank 1, and the steam treatment chamber 21 has the first output port 202. The blocking assembly 22 is disposed on the steam treatment chamber 21 and located inside the steam treatment chamber 21. The cover assembly 23 is disposed on the steam treatment chamber 21. The steam treatment chamber 21, the blocking assembly 22, and the cover assembly 23 enclose and form the condensation space 201. By enclosing the condensation space 201 with the steam treatment chamber 21, the blocking assembly 22, and the cover assembly 23, the stability and reliability of the steam treatment process are ensured. The setting of the blocking assembly 22 cleverly changes the flow path of the steam, allowing the high-temperature steam to remain sufficiently within the condensation space 201 and contact the cooling surface, significantly improving the condensation efficiency.

[0046] like Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the steam treatment chamber 21 is provided with an opening 203 communicating with the condensation space 201, and the cover assembly 23 is disposed on the steam treatment chamber 21 and covers the opening 203. The mating structure between the cover assembly 23 and the opening 203 ensures the airtightness of the condensation space 201, preventing steam leakage from affecting the treatment efficiency, and also facilitates maintenance and cleaning of the interior of the condensation space 201 by disassembling the cover assembly 23.

[0047] like Figure 8 and Figure 9 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the steam treatment chamber 21 is provided with a steam flow hole 204, and the water storage chamber 101, the steam flow hole 204, and the condensation space 201 are sequentially connected. The sequential connection of the water storage chamber 101, the steam flow hole 204, and the condensation space 201 allows the steam generated in the water storage chamber 101 to be transported to the steam treatment chamber 21 for condensation and reflux treatment, preventing excessive pressure in the water storage chamber 101 from affecting the safety of the equipment. Moreover, compared to designs that directly discharge to the external atmosphere, this design enables the recycling of steam.

[0048] like Figure 5 and Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the cover assembly 23 includes a condenser plate 231 and a cover plate 232, both of which are disposed on the steam treatment chamber 21, and are arranged adjacent to each other. The condenser plate 231 rapidly liquefies the steam through its cooling surface, and the liquefied water droplets naturally fall back to the bottom of the condensation space 201 under the action of gravity. The tight fit between the cover plate 232 and the condenser plate 231 ensures the airtightness of the condensation process and maintains a stable internal working environment. This design allows the steam to flow in a directional manner and condense in a concentrated manner, and the liquefied water smoothly returns to the water storage tank 1 through the return structure 3, realizing the efficient recovery and utilization of steam.

[0049] In addition to the features of the above embodiments, this embodiment further specifies that the cover assembly 23 is made of a material with good thermal conductivity. By making the cover assembly 23 of a material with good thermal conductivity, the high-temperature steam can be cooled, causing the steam to liquefy into water droplets and fall back into the condensation space 201, realizing the recycling of steam and avoiding the waste of water resources.

[0050] like Figure 9-11 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the steam treatment chamber 21 is provided with a first side cavity wall 205, a second side cavity wall 206 and a bottom cavity wall 207, the blocking assembly 22 includes a first baffle 221 and a second baffle 222, the first baffle 221 is connected to the bottom cavity wall 207 and / or the first side cavity wall 205 respectively, the first baffle 221 extends toward the second side cavity wall 206, the second baffle 222 is connected to the bottom cavity wall 207 and / or the second side cavity wall 206 respectively, the second baffle 222 extends toward the first side cavity wall 205, the first side cavity wall 205, the second side cavity wall 206, the bottom cavity wall 207, the first baffle 221, the second baffle 222 and the cover assembly 23 enclose the condensation space 201. The arrangement of the first baffle 221 and the second baffle 222 creates a tortuous steam channel within the condensation space 201, constructing an optimized steam flow path that forces the steam to continuously change direction during its flow. This design extends the residence time of the steam within the condensation space 201, prolongs the steam cooling time, and increases the success rate of steam liquefaction into water droplets, thereby improving the steam recycling rate. This staggered baffle structure significantly improves steam condensation efficiency without increasing the device volume.

[0051] like Figure 9-11As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of first baffles 221 is multiple, and multiple first baffles 221 are all disposed on the first side cavity wall 205, and the multiple first baffles 221 are arranged sequentially along the length direction of the first side cavity wall 205; the number of second baffles 222 is multiple, and multiple second baffles 222 are all disposed on the second side cavity wall 206, and the multiple second baffles 222 are arranged sequentially along the length direction of the second side cavity wall 206; the first baffles 221 and the second baffles 222 are arranged alternately. By disposing the first baffles 221 on the first side cavity wall 205 and the second baffles 222 on the second side cavity wall 206, and by alternating the first baffles 221 and the second baffles 222, the residence time of steam in the condensation space 201 is extended, the cooling time of steam is extended, and the recycling rate of steam is improved.

[0052] like Figure 9-11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the first side cavity wall 205 and the second side cavity wall 206 are arranged opposite to each other. The opposite arrangement of the first side cavity wall 205 and the second side cavity wall 206 forms a stable steam treatment cavity structure, avoiding local steam accumulation or dead zones in flow.

[0053] like Figure 8-11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottom cavity wall 207 is inclined relative to the water storage tank 1, the height of the first end of the bottom cavity wall 207 relative to the horizontal plane is lower than the height of the second end of the bottom cavity wall 207 relative to the horizontal plane, and the first outlet 202 is located at or near the first end of the bottom cavity wall 207. By inclining the bottom cavity wall 207 relative to the water storage tank 1, the condensed liquid water can flow naturally towards the lower first end of the bottom cavity wall 207 under gravity and be smoothly discharged through the first outlet 202 located at that position. This design achieves automatic collection and discharge of condensate, avoiding the accumulation of condensate on the bottom cavity wall 207 and affecting the subsequent steam condensation effect.

[0054] like Figure 6 and Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the steam treatment chamber 21 includes a chamber body 211, a first output pipe 212, and a second output pipe 213. The chamber body 211 is disposed on the water storage tank 1. The first output pipe 212 and the second output pipe 213 are both disposed on the chamber body 211. The first output pipe 212 is located at or near the first end of the bottom cavity wall 207 and has a first output port 202. The second output pipe 213 is located at or near the second end of the bottom cavity wall 207 and has a second output port 208, which communicates with the condensation space 201. Through the reasonable arrangement of the first output pipe 212 and the second output pipe 213, the effective separation and export of media in different states within the condensation space 201 are achieved. The first output pipe 212 is located at the lower end of the bottom cavity wall 207 and can be used to discharge the condensed liquid water, ensuring that the condensate can be completely discharged by gravity. The second output pipe 213 is located at the higher end and is used to handle residual steam or other gaseous media that have not been completely condensed, to avoid excessive gas pressure in the condensation space 201 and to prevent safety problems caused by excessive gas pressure. It can also prevent chain reactions such as the inability of steam in the water storage tank 1 to be discharged.

[0055] like Figure 12 and Figure 13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the water storage tank 1 includes a water tank body 11, a return connector 12, and a vent connector 13. The water tank body 11 is provided with the water storage chamber 101. The return connector 12 and the vent connector 13 are both disposed on the water tank body 11. The return connector 12 is provided with the water tank inlet 102, and the vent connector 13 is provided with a vent hole 103. The steam treatment component 2 is disposed on the vent connector 13 and located at the vent hole 103. The return connector 12 is used for the return supply of condensate, ensuring that the condensate can smoothly return to the water storage chamber 101. The vent connector 13 is used for the steam export process, and the direct connection between the vent hole 103 and the steam treatment component 2 achieves efficient steam output.

[0056] like Figure 12 and Figure 13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the return connector 12 is located at or near the bottom of the water storage tank 1. By positioning the return connector 12 at the bottom of the water storage tank 1, condensate can naturally flow back under gravity, ensuring a smooth and efficient water replenishment process. Furthermore, the water temperature at the bottom of the water storage tank 1 is lower, preventing hot water from dissipating heat through convection in the condensation space 201.

[0057] like Figure 12 and Figure 13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the vent connector 13 is located at or near the top of the water storage tank 1. By placing the vent connector 13 in the top area of ​​the water storage tank 1, the characteristic of natural steam rise is fully utilized to achieve rapid collection and export of steam.

[0058] Example 2

[0059] like Figure 14 As shown, this embodiment discloses an electric water heater, including: a housing assembly 100, the housing assembly 100 having an assembly cavity; and the aforementioned steam treatment device, the steam treatment device being disposed on the housing assembly 100 and located within the assembly cavity.

[0060] The second aspect of this application discloses an electric water heater that optimizes the overall structure by integrating a steam treatment device into the assembly cavity of the housing assembly 100. By closely integrating the steam treatment process with the water heater's operation, steam can immediately enter the processing flow after generation, improving the water heater's response speed and processing efficiency. This design effectively maintains the product's safety and stability.

[0061] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steam treatment apparatus, characterized in that, include: A water storage tank (1) is provided with a water storage cavity (101) and a water tank inlet (102) that communicates with the water storage cavity (101). A steam treatment component (2) is provided on the water storage tank (1) or adjacent to the water storage tank (1). The steam treatment component (2) is provided with a condensation space (201) which is connected to the water storage chamber (101). The steam treatment component (2) is provided with a first output port (202) which is connected to the condensation space (201). The reflux structure (3) is connected to the steam treatment component (2) and the water storage tank (1) respectively. The reflux structure (3) is connected to the first output port (202) and the water tank inlet (102).

2. The steam treatment apparatus according to claim 1, characterized in that, The steam treatment assembly (2) includes a steam treatment chamber (21), a blocking assembly (22), and a cover assembly (23). The steam treatment chamber (21) is disposed on the water storage tank (1) and has a first outlet (202). The blocking assembly (22) is disposed on the steam treatment chamber (21) and located inside the steam treatment chamber (21). The cover assembly (23) is disposed on the steam treatment chamber (21). The steam treatment chamber (21), the blocking assembly (22), and the cover assembly (23) enclose the condensation space (201).

3. The steam treatment apparatus according to claim 2, characterized in that, The steam treatment box (21) is provided with an opening (203) communicating with the condensation space (201), and the cover assembly (23) is disposed on the steam treatment box (21) and covers the opening (203); And / or the steam treatment box (21) is provided with a steam flow hole (204), and the water storage chamber (101), the steam flow hole (204) and the condensation space (201) are connected in sequence; And / or the cover assembly (23) includes a condenser plate (231) and a cover plate (232), both of which are disposed on the steam treatment box (21) and are disposed adjacent to each other; And / or the cover assembly (23) is made of a material with good thermal conductivity.

4. The steam treatment apparatus according to claim 2, characterized in that, The steam treatment chamber (21) is provided with a first side cavity wall (205), a second side cavity wall (206) and a bottom cavity wall (207). The blocking assembly (22) includes a first baffle (221) and a second baffle (222). The first baffle (221) is connected to the bottom cavity wall (207) and / or the first side cavity wall (205) respectively. The first baffle (221) extends toward the second side cavity wall (206). The second baffle (222) is connected to the bottom cavity wall (207) and / or the second side cavity wall (206) respectively. The second baffle (222) extends toward the first side cavity wall (205). The first side cavity wall (205), the second side cavity wall (206), the bottom cavity wall (207), the first baffle (221), the second baffle (222) and the cover assembly (23) enclose the condensation space (201).

5. The steam treatment apparatus according to claim 4, characterized in that, There are multiple first baffles (221), all of which are disposed on the first side cavity wall (205). The multiple first baffles (221) are arranged sequentially along the length direction of the first side cavity wall (205). There are multiple second baffles (222), all of which are disposed on the second side cavity wall (206). The multiple second baffles (222) are arranged sequentially along the length direction of the second side cavity wall (206). The first baffles (221) and the second baffles (222) are arranged alternately. And / or the first side cavity wall (205) and the second side cavity wall (206) are arranged opposite to each other.

6. The steam treatment apparatus according to claim 4, characterized in that, The bottom cavity wall (207) is inclined relative to the water storage tank (1). The height of the first end of the bottom cavity wall (207) relative to the horizontal plane is lower than the height of the second end of the bottom cavity wall (207) relative to the horizontal plane. The first outlet (202) is located at or near the first end of the bottom cavity wall (207).

7. The steam treatment apparatus according to claim 6, characterized in that, The steam treatment chamber (21) includes a chamber body (211), a first output pipe (212), and a second output pipe (213). The chamber body (211) is disposed on the water storage tank (1). The first output pipe (212) and the second output pipe (213) are both disposed on the chamber body (211). The first output pipe (212) is located at or near the first end of the bottom cavity wall (207). The first output pipe (212) has a first output port (202). The second output pipe (213) is located at or near the second end of the bottom cavity wall (207). The second output pipe (213) has a second output port (208). The second output port (208) is connected to the condensation space (201).

8. The steam treatment apparatus according to claim 1, characterized in that, The water storage tank (1) includes a water tank body (11), a return connector (12), and an air outlet connector (13). The water tank body (11) is provided with the water storage chamber (101). The return connector (12) and the air outlet connector (13) are both located on the water tank body (11). The return connector (12) is provided with the water tank inlet (102). The air outlet connector (13) is provided with a vent hole (103). The steam treatment component (2) is located on the air outlet connector (13) and at the vent hole (103).

9. The steam treatment apparatus according to claim 8, characterized in that, The return connector (12) is located at the bottom of the water storage tank (1) or near the bottom of the water storage tank (1); And / or the vent connector (13) is located at the top of the water storage tank (1) or near the top of the water storage tank (1).

10. An electric water heater, characterized in that, include: A housing assembly (100) having an assembly cavity; The steam treatment apparatus according to any one of claims 1-9, wherein the steam treatment apparatus is disposed on the housing assembly (100) and located within the assembly cavity.

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