Anti-overflow electric kettle

Abstract

The present application relates to a kind of anti-overflow electric kettle, including kettle body and kettle cover, the kettle body inside has water-containing inner cavity, kettle cover includes upper cover and lower cover, upper cover and lower cover are formed with cover cavity between, it is characterized in that: C-shaped steam pipe is equipped in the cover cavity, the steam pipe is along the cover cavity lateral wall and is arranged around, the steam pipe first end opening is downward and is communicated with the water-containing inner cavity, the steam pipe second end opening is upward and is communicated with external environment.The steam pipe arranged in cover cavity is used for steam exhaust pressure relief, due to steam pipe along the lateral wall of cover cavity and is arranged around, when kettle body is poured, water in the water-containing inner cavity will not quickly overflow from steam pipe, the design of steam pipe of the present application is low in cost, safe and portable in use.

Description

Technical Field

[0001] This invention relates to the field of electric kettles, and in particular to an anti-overflow electric kettle. Background Technology

[0002] Current electric kettles typically use gravity-sealed mechanisms to prevent spills. For example, a weighted seal seals the steam vent when the kettle is tilted, preventing liquid from overflowing. However, this weight is heavy and can cause knocking noises when pouring or removing the lid, making it inconvenient for users. Furthermore, weights are expensive and may malfunction due to wear and tear. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an anti-overflow electric kettle that is simple in structure and can effectively prevent hot water from overflowing, in view of the current situation of the prior art. The anti-overflow electric kettle is inexpensive, safe and lightweight.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an anti-overflow electric kettle, including a kettle body and a kettle lid, wherein the kettle body has a water-containing inner cavity, and the kettle lid includes an upper lid and a lower lid, with a lid cavity formed between the upper lid and the lower lid, characterized in that: a C-shaped steam pipe is provided in the lid cavity, the steam pipe is arranged around the side wall of the lid cavity, the first end of the steam pipe opens downward and communicates with the water-containing inner cavity, and the second end of the steam pipe opens upward and communicates with the external environment.

[0005] To improve the spill prevention effect, when the water-filled inner cavity is filled to the maximum water level and the kettle is tilted, the height of the highest liquid level formed in the inner cavity does not exceed the highest height of the inner edge of the steam pipe. When the kettle is tilted, the steam pipe is in a near-vertical position, and the water inside the kettle flows into the steam pipe from the first end. As long as the liquid level inside the kettle does not exceed the highest height of the inner edge of the steam pipe after tilting, the water inside the kettle cannot flow out from the second end of the steam pipe.

[0006] To facilitate the backflow of water from the steam pipe into the kettle body, when the kettle is upright, the height of the first end of the steam pipe is lower than the height of the second end. When the kettle is tilted, a certain amount of water will accumulate in the steam pipe, or liquefied water will form within it during the boiling process. Because the first end of the steam pipe is lower than the second end, the water in the steam pipe will flow into the kettle body through the first end, ensuring the hygiene of the steam pipe.

[0007] To ensure that the highest point of the inner edge of the steam pipe is higher than the liquid level inside the pot after the pot is tilted, the central angle of the steam pipe is no less than 350 degrees. The steam pipe surrounds the inside of the lid cavity. When the pot is tilted, water inside the pot flows into the steam pipe from its first end. As long as the highest point of the inner edge of the steam pipe is higher than the liquid level inside the pot, water will not flow out of the steam pipe. In other embodiments, the central angle of the steam pipe can be greater than 360 degrees. The steam pipe surrounds the entire pot so that the highest point of the inner edge of the steam pipe reaches a preset maximum value. Furthermore, the first and second ends of the steam pipe can be located anywhere on the side wall of the lid cavity.

[0008] To facilitate the processing of the steam pipe, the central angle of the steam pipe is 350-359 degrees. A handle is provided on the outer peripheral wall of the kettle, and the second end of the steam pipe is located on the side wall of the lid cavity furthest from the handle. When the central angle of the steam pipe is less than 360 degrees, upward-facing steam outlets and downward-facing steam inlets can be opened at both ends of the steam pipe. When the central angle of the steam pipe is less than 360 degrees, and the kettle body 1 is tilted so that the second end of the steam pipe is at the highest point of the entire steam pipe, the highest height of the inner edge of the steam pipe is at its lowest. Under this premise, by setting the second end of the steam pipe on the side wall of the lid cavity furthest from the handle, the second end of the steam pipe will not be at its highest point due to the limitation of the handle. Therefore, even if the central angle of the steam pipe is slightly less than 360 degrees, it will not affect the highest height of the inner edge of the steam pipe.

[0009] Preferably, the lower cover includes a lower cover bottom plate and a lower cover side plate extending upward from the periphery of the lower cover bottom plate, the upper cover and the lower cover enclose the cover cavity, and the lower cover side plate constitutes the side wall of the cover cavity.

[0010] To facilitate steam output, the first end of the steam pipe has a first steam inlet opening downwards, and the bottom plate of the lower cover has a second steam inlet corresponding to and communicating with the first steam inlet; the second end of the steam pipe has a first steam outlet opening upwards, and the upper cover has a second steam outlet corresponding to and communicating with the first steam outlet.

[0011] In order to reduce the amount of steam discharged from the second steam outlet, a condensing mechanism is provided below the lower cover. The condensing mechanism and the bottom plate of the lower cover together form a condensing cavity. The condensing mechanism is provided with a through hole connecting the condensing cavity and the water-containing cavity.

[0012] Preferably, the condensation mechanism includes a condensation base plate and a condensation side plate extending upward from the periphery of the condensation base plate, the upper end of the condensation side plate being in contact with the base plate.

[0013] To facilitate the return flow of water in the condensation chamber, the condensation base plate is recessed downwards to form a concave portion, and the through hole is located at the lowest point of the concave portion.

[0014] To secure the steam pipe, a support frame extends upward from the upper surface of the lower cover, and the support frame has an upward-opening support groove. The steam pipe is positioned within the support groove, preventing it from wobbling.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The steam pipe installed in the lid cavity is used to release steam and relieve pressure generated during normal boiling. Since the C-shaped steam pipe is arranged around the side wall of the lid cavity, when the kettle is tilted, no matter what angle the lid is tilted, the opening at the first end of the C-shaped steam pipe is either lower than the highest point of the C-shaped steam pipe or at the highest point of the C-shaped steam pipe. Even if some water in the inner water chamber enters the steam pipe from the opening at the first end of the C-shaped steam pipe, it will not flow out from the opening at the second end of the C-shaped steam pipe (in principle, the pressure in the inner water chamber needs to be higher than one atmosphere to force the water past the highest point of the C-shaped steam pipe and finally flow out from the opening at the second end). Therefore, when the kettle is tilted, no matter what angle the lid is tilted, the hot water in the inner water chamber will not overflow from the C-shaped steam pipe quickly and scald the user.

[0016] The anti-overflow structure of this invention is simple and effective, with low implementation cost. It can effectively prevent hot water from overflowing, and its structure is safe and lightweight. It is especially suitable for electric kettles where the spout is connected to the lower part of the kettle body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the anti-overflow electric kettle in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the kettle lid;

[0019] Figure 3 for Figure 2 An exploded view of the lid of the teapot;

[0020] Figure 4 for Figure 2 A cross-sectional view of the lid of the kettle;

[0021] Figure 5 for Figure 3 Schematic diagram of the middle and lower cover;

[0022] Figure 6 for Figure 3 A schematic diagram of the structure in which the lower cover mates with the steam pipe;

[0023] Figure 7 This is a schematic diagram of the water level inside the anti-overflow electric kettle after it has been tilted, according to an embodiment of the present invention. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1-7 The diagram shows a preferred embodiment of the anti-overflow electric kettle of the present invention. The kettle includes a kettle body 1, an upper lid 2, a lower lid 3, and a steam pipe 4. The kettle body 1 has a water-containing cavity 1a inside. A lid cavity 2a is formed between the upper lid 2 and the lower lid 3, and a C-shaped steam pipe 4 is provided within the lid cavity 2a. Water vapor generated in the water-containing cavity 1a is discharged to the external environment through the steam pipe 4. In this embodiment, the spout is connected to the lower part of the kettle body, and a sealing element is provided between the spout and the kettle body 1 to seal the spout. For detailed structure, please refer to the applicant's prior application.

[0026] like Figure 3 , 4 As shown, a lower cover 3 is connected below the upper cover 2. The lower surface of the upper cover 2 has several latches 23 protruding downwards. The lower cover 3 includes a lower cover base plate 31 and a lower cover side plate 32 extending upwards from the periphery of the lower cover base plate 31. The inner peripheral wall of the lower cover side plate 32 is provided with several buckles 322 that cooperate with the latches 23. The buckles 322 are arranged at intervals along the circumference of the lower cover side plate 32. The connection between the upper cover 2 and the lower cover 3 is achieved by engaging the buckles 322 of the lower cover 3 with the latches 23 of the upper cover 2. At this time, the upper end of the lower cover side plate 32 is in contact with the lower surface of the upper cover 2. The upper cover 2, the lower cover base plate 31, and the lower cover side plate 32 form the cover cavity 2a. A sealing ring 7 is also provided on the outer periphery of the lower cover side plate 32.

[0027] like Figure 3 , 6 As shown, the first end of the steam pipe 4 is bent downwards to form a downward-opening first steam inlet 41. The bottom plate 31 of the lower cover has a second steam inlet 311 that corresponds to and communicates with the first steam inlet 41, and the first end of the steam pipe 4 is inserted into the second steam inlet 311. The second end of the steam pipe 4 is bent upwards to form an upward-opening first steam outlet 42, and the upper cover 2 has a second steam outlet 21 that corresponds to and communicates with the first steam outlet 42. When the water in the kettle body 1 generates steam, the steam enters the first steam inlet 41 of the steam pipe 4 through the second steam inlet 311 on the bottom plate 31 of the lower cover, and then enters the external environment through the second steam outlet 21 on the upper cover 2 from the first steam outlet 42 of the steam pipe 4.

[0028] like Figure 5 , 6As shown, a support frame 312 for supporting the steam pipe 4 extends upward from the upper surface of the bottom plate 31 of the lower cover. The support frame 312 has several upward-opening support grooves 3121. The steam pipe 4 is placed in the support grooves 3121, thus fixing its position within the cover cavity 2a. Specifically, along the steam outlet direction of the steam pipe 4, the height of the lowest point of the support groove 3121 gradually increases, causing the steam pipe 4 to be arranged in a spiral upward pattern. That is, when the kettle body 1 is upright, the height of the lowest point of the first end of the steam pipe 4 is less than the height of the lowest point of the second end of the steam pipe 4. After the kettle body 1 is tilted, a certain amount of water will accumulate in the steam pipe 4, or liquefied water will form in the steam pipe 4 during the boiling process. Since the first end of the steam pipe 4 is lower than the second end of the steam pipe 4, after the kettle body 1 is uprighted, the water in the steam pipe 4 will flow into the kettle body through the first end of the steam pipe 4.

[0029] To further ensure the anti-overflow effect, the steam pipe 4 is arranged as close as possible to the side wall of the cover cavity 2a. When the water-containing inner cavity 1a is filled to the highest water level and the kettle body 1 is in a tilted state, the height H1 of the highest tilted liquid surface in the water-containing inner cavity 1a does not exceed the highest height H2 of the inner edge of the steam pipe 4. Figure 7 As shown. When the kettle body 1 is tilted, the steam pipe 4 is in a nearly vertical position. Water inside the kettle flows into the steam pipe 4 from the first end. As long as the liquid level inside the kettle does not exceed the highest point of the inner edge of the steam pipe 4 after tilting, the water inside the kettle cannot flow out from the second end of the steam pipe 4. It is worth noting that the closer the steam pipe 4 is to the side wall of the lid cavity 2a, the higher the highest point of the inner edge of the steam pipe 4 will be after the kettle body 1 is tilted; similarly, if the diameter of the kettle mouth is larger than the diameter of the kettle body, the highest point of the inner edge of the steam pipe 4 will more easily exceed the liquid level inside the kettle after tilting. Therefore, to achieve a good anti-overflow effect, the steam pipe 4 needs to be close to the side wall of the lid cavity 2a, and the diameter of the kettle mouth should be slightly smaller than or greater than or equal to the diameter of the kettle body.

[0030] In this embodiment, the central angle of the steam pipe 4 is 350-359 degrees. Due to processing limitations, only when the central angle of the steam pipe 4 is less than 360 degrees can both ends of the steam pipe 4 be bent upwards to form a steam outlet and downwards to form a steam inlet, respectively. A central angle of less than 360 degrees will, to some extent, reduce the maximum height of the inner edge of the steam pipe 4 at a certain tilting angle of the kettle body 1; however, it is acceptable as long as it is greater than the height of the highest poured liquid surface formed within the water-containing cavity 1a at that tilting angle. In other embodiments, the central angle of the steam pipe 4 can also be greater than 360 degrees. With this design, the steam inlet of the steam pipe 4 can penetrate through the lower cover side plate 32 and communicate with the interior of the kettle body 1, or the steam outlet of the steam pipe 4 can penetrate through the lower cover side plate 32 and communicate with the external environment.

[0031] To reduce the steam output from the second steam outlet 21, a condensing mechanism 5 is provided below the lower cover 3. The condensing mechanism 5 includes a condensing base plate 51 and a condensing side plate 50 extending upward from the periphery of the condensing base plate 51. The condensing base plate 51 is recessed downward to form a recessed portion 52, and a through hole 521 is provided at the lowest point of the recessed portion 52. A stud 34 is provided on the lower cover base plate 31 of the lower cover 3, and a connecting hole 511 corresponding to the stud 34 is provided on the condensing base plate 51. A screw passes through the connecting hole 511 and connects to the stud 34. The upper end of the condensing side plate 50 contacts the lower surface of the lower cover base plate 31. The condensing mechanism 5 and the lower cover base plate 31 of the lower cover 3 together form a condensing cavity 5a. The water vapor generated inside the kettle body 1 first passes through the through hole 521 and is condensed in the condensing cavity 5a. The condensed water flows back into the kettle body 1 through the through hole 521.

[0032] like Figure 3 , 4 As shown in Figure 5, a central shaft 33 extends upward from the center of the upper surface of the bottom plate 31 of the lower cover. A lid switch 6, which cooperates with the kettle body 1, is provided around the central shaft 33. The lid switch 6 includes two symmetrically arranged switch units 60. Each switch unit 60 includes an operating part 60 extending upward from the upper cover 2 into the lid cavity 2a, and a snap-fit ​​part 61 extending out of the lid cavity 2a from the lower cover side plate 32 of the lower cover 3. An elastic element (not shown in the figure) is provided between the outer wall of the central shaft 33 and the switch unit 60 to keep them moving away from each other. That is, in its natural state, the switch unit... The two switch units 60 tend to move radially outward along the central axis 33, and tend to move away from each other, so that the latching parts 61 on the switch units 60 remain extended out of the cover cavity 2a. Each switch unit 60 is provided with a pair of latching parts 61, which are spaced a certain distance apart from each other. The upper cover 2 is provided with an upwardly protruding dust cap 22 corresponding to the central axis 33. The side of the dust cap 22 is provided with a first clearance hole 221 for the operating part 60 to extend out. The lower cover 3 has a second clearance hole 321 on the lower cover side plate 32 for each latching part 61 to pass through. When the lid is closed, the user squeezes the two operating parts 60 relative to each other, and the operating parts 60 can retract radially inward along the central axis 33. At this time, each latching part 61 also retracts into the cover cavity 2a. After the lid is placed on the mouth of the pot, the pressure on the operating parts 60 is released, and each latching part 61 passes through the clearance hole 321 and latches with the internal structure of the pot body 1.

Claims

1. An anti-overflow electric kettle, comprising a kettle body (1) and a kettle lid, wherein the kettle body (1) has a water-containing inner cavity (1a) inside, and the kettle lid comprises an upper lid (2) and a lower lid (3), wherein a lid cavity (2a) is formed between the upper lid (2) and the lower lid (3), characterized in that: The cover cavity (2a) is provided with a C-shaped steam pipe (4), which is arranged around the side wall of the cover cavity (2a). The first end of the steam pipe (4) opens downward and communicates with the water-containing inner cavity (1a), while the second end of the steam pipe (4) opens upward and communicates with the external environment.

2. The anti-overflow electric kettle according to claim 1, characterized in that: When the water-containing inner cavity (1a) is filled with water to the highest water level and the kettle body (1) is in a tilted state, the height (H1) of the highest tilted liquid surface formed in the water-containing inner cavity (1a) does not exceed the highest height (H2) of the inner edge of the steam pipe (4).

3. The anti-overflow electric kettle according to claim 1, characterized in that: When the kettle body (1) is in an upright position, the height of the first end of the steam pipe (4) is lower than the height of the second end of the steam pipe (4).

4. The anti-overflow electric kettle according to claim 1, characterized in that: The steam pipe (4) has a central angle of 350 to 359 degrees; a handle (11) is provided on the outer peripheral wall of the kettle body (1), and the second end of the steam pipe (4) is located on the side wall of the lid cavity (2a) furthest from the handle (11).

5. The anti-overflow electric kettle according to claim 1, characterized in that: The lower cover (3) includes a lower cover bottom plate (31) and a lower cover side plate (32) extending upward from the periphery of the lower cover bottom plate (31). The upper cover (2) and the lower cover (3) enclose the cover cavity (2a), and the lower cover side plate (32) constitutes the side wall of the cover cavity (2a).

6. The anti-overflow electric kettle according to claim 5, characterized in that: The first end of the steam pipe (4) has a first steam inlet (41) opening downwards, and the bottom plate (31) of the lower cover is provided with a second steam inlet (311) corresponding to and communicating with the first steam inlet (41); the second end of the steam pipe (4) has a first steam outlet (42) opening upwards, and the upper cover (2) is provided with a second steam outlet (21) corresponding to and communicating with the first steam outlet (42).

7. The anti-overflow electric kettle according to claim 6, characterized in that: A condensing mechanism (5) is provided below the lower cover (3). The condensing mechanism (5) and the bottom plate (31) of the lower cover (3) together form a condensing cavity (5a). The condensing mechanism (5) is provided with a through hole (521) connecting the condensing cavity (5a) and the water-containing inner cavity (1a).

8. The anti-overflow electric kettle according to claim 7, characterized in that: The condensation mechanism (5) includes a condensation base plate (51) and a condensation side plate (50) extending upward from the periphery of the condensation base plate (51), the upper end of the condensation side plate (50) being in contact with the lower cover base plate (31).

9. The anti-overflow electric kettle according to claim 8, characterized in that: The condenser base plate (51) is recessed downward to form a recess (52), and the through hole (521) is located at the lowest point of the recess (52).

10. The anti-overflow electric kettle according to any one of claims 1 to 7, characterized in that: The upper surface of the lower cover (3) extends upward to a support frame (312) for supporting the steam pipe (4), and the support frame (312) is provided with an upward-opening support groove (3121).

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