An electric kettle lid with internal pressure relief and anti-dumping function

Abstract

The present invention discloses an internal pressure relief anti-dumping electric kettle lid, comprising a lid body and a water sealing assembly, wherein a water outlet is provided on the side of the lid body, a water inlet is provided on the lower part of the lid body, the water sealing assembly is slidably connected with the lid body and blocks the water inlet, and an exhaust pressure relief assembly and a reflux assembly are provided in the lid body, the exhaust pressure relief assembly is an important passage for steam to be discharged from a water-containing cavity, and the reflux assembly expands the volume of the water-containing cavity and can buffer the steam pressure in the water-containing cavity, but the steam will not remain in other positions in the lid body, so condensed water can be easily removed when the lid is cleaned. The exhaust pressure relief assembly and the reflux assembly are designed independently of each other and isolated from the inside of the lid, and water vapor only circulates in the exhaust channel and the reflux channel. The lid has a simple structure and is easy to clean, which prevents condensed water from remaining in the lid after long-term use, thereby preventing health problems.

Description

Technical Field

[0001] The invention relates to an electric kettle, in particular to an internal pressure-releasing anti-dumping electric kettle lid. Background Art

[0002] At present, most of the lids of electric kettles on the market adopt a sealed structure. In order to ensure the efficiency of boiling water and the heat preservation performance, a pressure relief vent or exhaust vent is basically set inside the lid to avoid the large amount of water vapor generated when boiling water causing excessive pressure inside the kettle body and posing a safety hazard.

[0003] However, adding a vent structure will cause the water in the kettle to overflow from the vent after the kettle tipped over, which may cause the user to be scalded. In the current anti-tip design of electric kettles, the anti-tip structure is mostly designed on the kettle lid, and uses gravity valves, balls and other structures, so that when the kettle tipped over, the gravity of the gravity valves, balls and other structures is used to block the vent to prevent water from flowing out of the vent. However, the structure of electric kettles using this type of structure is relatively complex, and when boiling water, steam will fill the entire lid, and the condensed water will also cover the entire lid. The inside of the lid is not easy to clean and the condensed water cannot be poured out. If used for a long time, it will cause residual water to accumulate, and the condensed water will deteriorate and have a strange smell, which is not conducive to the long-term healthy use of the kettle. Summary of the invention

[0004] Aiming at the defects of the electric kettle in the prior art, such as complex exhaust and pressure relief structure design and residual condensed water, the present invention provides a new internal pressure relief anti-dumping electric kettle lid.

[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0006] An internal pressure relief and anti-dumping electric kettle lid comprises a lid body and a water sealing assembly, wherein a water outlet is arranged on the side of the lid body, a water inlet is arranged at the lower part of the lid body, the water sealing assembly is slidably connected with the lid body and blocks the water inlet, an air inlet is arranged at the lower part of the lid body, a first reflux port and a second reflux port are also arranged at the lower part of the lid body, an exhaust port connected with the water outlet is arranged on the lid body, an exhaust pressure relief assembly and a reflux assembly are arranged in the lid body, an exhaust channel is arranged in the exhaust pressure relief assembly, a reflux channel is arranged in the reflux assembly, an exhaust channel inlet end is connected with the air inlet, an exhaust channel outlet end is connected with the exhaust port, and the reflux channel is connected with the first reflux port and the second reflux port respectively.

[0007] In the above-mentioned kettle lid structure, a water sealing component is provided in the kettle lid body for sealing the water inlet to prevent liquid from entering the water inlet and overflowing from the kettle lid body when the electric kettle accidentally tips over. An exhaust pressure relief component and a reflux component are provided in the kettle lid body, which respectively play different roles. The exhaust pressure relief component is used to connect the water-containing cavity and the water outlet of the kettle body, and is an important passage for the discharge of steam in the water-containing cavity. The reflux component expands the volume of the water-containing cavity, can buffer the steam pressure in the water-containing cavity, and at the same time buffers the impact force of the liquid when the kettle body tips over or turns over. The steam in the water-containing cavity enters the exhaust pressure relief component from the air inlet, and finally discharges the water vapor to the water outlet. When the steam passes through the exhaust pressure relief component, a part of it will be discharged from the kettle lid body, and a part of it will condense and remain in the exhaust pressure relief component to form condensed water, but the steam will not remain in other positions in the kettle lid body, so the condensed water can be easily removed when the kettle lid is cleaned; at the same time, there is no need to design a steam hole on the kettle lid to avoid scalding the user with the steam hole. When the kettle is tipped over or turned upside down, the liquid in the water-containing cavity will generate impact force on the bottom of the kettle lid. At this time, the first reflux port and the second reflux port will bear most of the flow impact force. After the water vapor enters the reflux component, the reflux channel expands slightly, buffering most of the steam pressure; the exhaust pressure relief component and the reflux component are designed independently and isolated from the inside of the kettle lid. Water vapor only circulates in the exhaust channel and the reflux channel. The kettle lid has a simple structure and is easy to clean, which prevents condensed water from remaining in the kettle lid after long-term use, thereby preventing health problems.

[0008] Preferably, in the above-described internal pressure relief and anti-dumping electric kettle lid, the exhaust pressure relief assembly comprises an air inlet connecting part, an exhaust pipe, and an exhaust port connecting part in sequence, the exhaust channel is arranged in the exhaust pipe, the air inlet is interference fit with the air inlet connecting part, and the exhaust port connecting part is interference fit with the exhaust port.

[0009] The two ends of the exhaust pressure relief assembly are respectively connected to the air inlet and the exhaust port, and the connection through interference fit can form a connection part with good stability and good sealing, so that the exhaust pipe forms a good sealing connection with the air inlet connection part and the exhaust port connection part, avoiding leakage or detachment when the exhaust pipe expands slightly.

[0010] Preferably, in the above-mentioned internal pressure relief anti-dumping electric kettle lid, the ratio of the inner diameter of the exhaust pipe to the inner diameters of the exhaust port connecting part and the air inlet connecting part is R1, and 0.2≤R1≤1.

[0011] The inner diameter of the exhaust pipe is smaller than or equal to the exhaust port connection and the air inlet connection. When steam enters the exhaust pipe and causes thermal expansion of the exhaust pipe, leakage or detachment between the exhaust pipe and the exhaust port connection and the air inlet connection can be better avoided.

[0012] Preferably, in the above-mentioned internal pressure relief anti-dumping electric kettle lid, the exhaust pipe is arranged around the lid body, and the lid body is provided with at least one limiting rib and the direction of the exhaust pipe is limited by the limiting rib.

[0013] The exhaust pipe is wound around the kettle cover body and the direction of the exhaust pipe is limited by the limiting ribs, which can prevent the exhaust pipe from being greatly displaced or entangled when steam enters the exhaust pipe.

[0014] Preferably, in the above-mentioned internal pressure relief anti-dumping electric kettle lid, the number of the limiting ribs is 5.

[0015] When the number of limiting ribs reaches 5, the direction of the exhaust pipe is set more reasonably through the reasonable arrangement of the limiting ribs, the pipe walls will not touch each other, and the exhaust pipe can form multiple bends to enhance the ability of the exhaust pipe to buffer steam pressure.

[0016] Preferably, in the above-described internal pressure relief and anti-dumping electric kettle lid, the reflux assembly comprises in sequence a first reflux connection part, a reflux pipe, and a second reflux connection part, the reflux channel is arranged in the reflux pipe, the first reflux connection part is interference fit with the first reflux port, and the second reflux connection part is interference fit with the second reflux port.

[0017] Both ends of the reflux assembly are connected to the water containing cavity. Through the interference fit between the first reflux connection part and the first reflux port, and the second reflux connection part and the second reflux port, a fit with excellent stability and sealing can be formed. If the sealing of the connection is not good, water vapor will enter the pot cover body and cause liquid to flow to other structures in the pot cover body. Therefore, the above-mentioned connection method can avoid the situation where the reflux pipe is separated from the first reflux port or the second reflux port when water vapor enters the reflux pipe.

[0018] Preferably, in the above-mentioned internal pressure relief anti-dumping electric kettle lid, the ratio of the inner diameter of the reflux pipe to the inner diameters of the first reflux connection part and the second reflux connection part is R2, and 0.2≤R2≤1.

[0019] The first reflux connection part and the second reflux connection part are used to connect the kettle lid body. When the kettle body is tilted or turned over, the liquid in the water-containing inner cavity impacts the first reflux connection part and the second reflux connection part, and then enters the reflux pipe and causes the reflux pipe to expand slightly. The inner diameter of the reflux pipe is less than or equal to the inner diameters of the first reflux connection part and the second reflux connection part, which can better avoid the reflux pipe from leaking or detaching from the first reflux connection part or the second reflux connection part due to the micro-expansion of the reflux pipe when the liquid enters the reflux pipe.

[0020] Preferably, for an inner pressure-relieving and anti-tipping electric kettle lid as described above, the ratio of the inner diameter of the reflux pipe to the inner diameter of the exhaust pipe is R3, where 1 < R3 ≤ 5; the ratio of the wall thickness of the reflux pipe to the wall thickness of the exhaust pipe is R4, where 0.3 ≤ R4 < 1.

[0021] The exhaust pressure-relieving component and the reflux component play different roles during use, and requirements need to be made for the inner diameters and wall thicknesses of both. The reflux pipe needs to accommodate most of the liquid when the kettle is tilted, so the inner diameter is designed relatively larger. When the kettle is tilted or inverted, the liquid will first impact and flow into the reflux pipe with a larger inner diameter; while the exhaust pipe is directly connected to the exhaust port. To prevent liquid from flowing out of the exhaust channel when the kettle is tilted or inverted, the inner diameter of the exhaust pipe is designed relatively smaller; at the same time, since the exhaust pipe is directly in contact with the steam and plays the main role in relieving pressure, to avoid the situation where the inner diameter of the exhaust pipe expands too much under the action of steam pressure and cracks occur, the wall thickness of the exhaust pipe is relatively thick to buffer the steam pressure, while the inner diameter thickness of the reflux pipe is relatively thin. When the steam pressure rises, the gas first enters the reflux pipe to cause its thermal expansion and buffer part of the steam pressure.

[0022] Preferably, for an inner pressure-relieving and anti-tipping electric kettle lid as described above, the exhaust pressure-relieving component and the reflux component are made of food-grade silicone or food-grade plastic.

[0023] When designing the exhaust pressure-relieving component and the reflux component, considering that the exhaust pipe and the reflux pipe need to simplify the structure and be integrally formed for convenient processing and manufacturing, food-grade silicone or food-grade plastic that is easy to bend and has good elasticity and toughness is selected, which not only meets the functional design of the above structure but also ensures the healthy use of the electric kettle.

[0024] Preferably, for an inner pressure-relieving and anti-tipping electric kettle lid as described above, the water-sealing component includes an umbrella cap, a switch unit, and an elastic mechanism. The upper part of the elastic mechanism abuts against the switch unit, the lower part of the elastic mechanism abuts against the umbrella cap, the switch unit limits the vertical sliding stroke of the umbrella cap through the elastic mechanism, the umbrella cap cooperates with the water inlet, and a sealing ring is provided on the umbrella cap to block the water inlet through the sealing ring.

[0025] The water-sealing component is used to block the water inlet and separate the water-containing inner cavity from the kettle lid body. The structural design of the umbrella cap, the switch unit, and the elastic mechanism makes the structure of the water-sealing component simpler, more practical, and the operation of the user more simple and convenient when pouring water.

[0026] Compared with the prior art, after adopting the above technical solution, the present invention has the following beneficial effects:

[0027] 1. When heating the electric kettle, water vapor can only be discharged from the kettle body through the exhaust channel. The exhaust channel is isolated from the inside of the kettle cover body, and water vapor cannot directly enter the cavity of the kettle cover body, which can prevent steam from condensing and remaining in the kettle cover body, solving the problem of condensed water and the problem of clean and healthy drinking water;

[0028] 2. In the prior art, most of the exhaust holes are set at the handle position, which is easy to burn hands when using. However, with the above structural design, the exhaust pressure relief component connects the water-containing cavity and the water outlet, so that the water vapor in the kettle is uniformly discharged from the water outlet, and there is no need to set an exhaust hole on the kettle cover body. Therefore, the problem of burning hands when using is avoided, and the kettle cover structure is simpler, more practical, and more in line with the user's operating habits;

[0029] 3. After the electric kettle boils, the hot steam in the water cavity generates a large amount of pressure, and the exhaust and pressure relief component can effectively exhaust and relieve the pressure, so that a large amount of hot water will not splash from the water outlet after boiling; when the kettle body tips over, the reflux pipe will fill the liquid level, additionally increase the capacity of the water cavity, and slow down the thermal shock of the liquid. The coiled structure design of the exhaust pipe can delay the thermal shock of the liquid, further solving the problem of hot water overflowing from the kettle when tipping over. Therefore, the above structure enables the internal pressure relief and anti-tipping functions of the electric kettle to be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The cross section of the present invention Figure 1 ;

[0031] Figure 2 The cross section of the present invention Figure 2 ;

[0032] Figure 3 It is a top view of the present invention in use;

[0033] Figure 4 It is a cross-sectional view of the present invention in use. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 The present invention is further described in detail with specific embodiments, but they are not intended to limit the present invention:

[0035] Example 1

[0036] A kettle lid with internal pressure relief and anti-dumping, comprising a kettle lid body 1 and a water sealing assembly 2. A water outlet 14 is provided on the side of the kettle lid body 1, a water inlet 13 is provided at the lower part of the kettle lid body 1, the water sealing assembly 2 is slidably connected to the kettle lid body 1 and blocks the water inlet 13, an air inlet 11 is provided at the lower part of the kettle lid body 1, a first reflux port 12 and a second reflux port 16 are also provided at the lower part of the kettle lid body 1, an exhaust port 15 connected to the water outlet 14 is provided on the kettle lid body 1, an exhaust pressure relief assembly 5 and a reflux assembly 4 are provided in the kettle lid body 1, an exhaust channel 51 is provided in the exhaust pressure relief assembly 5, a reflux channel 41 is provided in the reflux assembly 4, an air inlet end of the exhaust channel 51 is connected to the air inlet 11, an air outlet end of the exhaust channel 51 is connected to the exhaust port 15, and the reflux channel 41 is respectively connected to the first reflux port 12 and the second reflux port 16.

[0037] like Figures 1 to 4 As shown, in the unopened state, a water sealing component 2 is provided between the kettle lid body 1 and the water containing cavity 8, so the liquid in the water containing cavity 8 cannot be poured out from the water inlet 13; in the process of heating the electric kettle, the water containing cavity 8 gradually heats up and increases in pressure, a part of the steam slowly enters the reflux channel 41 and fills the reflux component 4 to cause it to expand thermally, a part of the steam enters the exhaust channel 51 of the exhaust and pressure relief component 5 from the air inlet 11, and is discharged from the kettle lid body 1 from the water outlet 14, thereby realizing the exhaust and pressure relief function of the electric kettle; when the kettle body is tilted or inverted, the liquid in the water containing cavity 8 will generate an impact force on the bottom of the kettle lid body 1, at this time the first reflux port 12 and the second reflux port 16 will bear most of the flow impact force, after the liquid enters the reflux component 4, the reflux channel 41 expands slightly, buffering most of the flow impact force, solving the problem of liquid directly overflowing from the water outlet 14 when tilting, thereby realizing the anti-tilting function of the electric kettle.

[0038] Preferably, the exhaust pressure relief assembly 5 includes an air inlet connecting portion 54, an exhaust pipe 52, and an exhaust port connecting portion 53 in sequence, the exhaust channel 51 is arranged in the exhaust pipe 52, the air inlet 11 is interference fit with the air inlet connecting portion 54, and the exhaust port connecting portion 53 is interference fit with the exhaust port 15.

[0039] Preferably, the ratio of the inner diameter of the exhaust pipe 52 to the inner diameters of the exhaust port connecting portion 53 and the air inlet connecting portion 54 is R1, and 0.2≤R1≤1.

[0040] Preferably, the exhaust pipe 52 is wound around the pot cover body 1 , and at least one limiting rib 17 is provided on the pot cover body 1 , and the direction of the exhaust pipe 52 is limited by the limiting rib 17 .

[0041] Preferably, the number of the limiting ribs 17 is 5.

[0042] Preferably, the reflux assembly 4 sequentially includes a first reflux connection part 43, a reflux pipe 42, and a second reflux connection part 44. The reflux channel 41 is arranged inside the reflux pipe 42. The first reflux connection part 43 is in interference fit with the first reflux port 12, and the second reflux connection part 44 is in interference fit with the second reflux port 16.

[0043] Preferably, the ratio of the inner diameter of the reflux pipe 42 to the inner diameters of the first reflux connection part 43 and the second reflux connection part 44 is R2, where 0.2 ≤ R2 ≤ 1.

[0044] Preferably, the ratio of the inner diameter of the reflux pipe 42 to the inner diameter of the exhaust pipe 52 is R3, where 1 < R3 ≤ 5; the ratio of the wall thickness of the reflux pipe 42 to the wall thickness of the exhaust pipe 52 is R4, where 0.3 ≤ R4 < 1.

[0045] Preferably, the materials of the exhaust pressure relief assembly 5 and the reflux assembly 4 are food-grade silicone or food-grade plastic.

[0046] Preferably, the water sealing assembly 2 includes an umbrella cap 6, a switch unit 3, and an elastic mechanism 7. The upper part of the elastic mechanism 7 abuts against the switch unit 3, and the lower part of the elastic mechanism 7 abuts against the umbrella cap 6. The switch unit 3 defines the vertical sliding stroke of the umbrella cap 6 through the elastic mechanism 7. The umbrella cap 6 cooperates with the water inlet 13, and a sealing ring 61 is arranged on the umbrella cap 6 to block the water inlet 13 through the sealing ring 61.

[0047] Specifically, as Figures 1 to 4 shown, when the electric kettle is in the unopened state, the water inlet 13 of the kettle lid body 1 is blocked by the water sealing assembly 2, and the umbrella cap 6 and the sealing ring 61 separate the liquid in the water-containing inner cavity 8 from the water inlet 13. At this time, when the user tilts the kettle body to pour water, the liquid cannot pour out from the water outlet 14; when the user needs to open the electric kettle, first press the switch unit 3, the switch unit 3 drives the umbrella cap 6 to slide downward, the water inlet 13 is communicated with the water-containing inner cavity 8, and at this time, when the user tilts the kettle body to pour water, the liquid pours out from the water outlet 14.

[0048] When the electric kettle is heated, the water-containing cavity 8 gradually increases in temperature and pressure, a portion of the steam enters the reflux component 4 and causes the reflux pipe 42 to expand thermally to buffer a portion of the thermal pressure, a portion of the steam enters the exhaust pressure relief component 5 and causes the exhaust pipe 52 to expand thermally, and when the steam passes through the wound exhaust pipe 52, a portion of it enters the exhaust port 15 and the water outlet 14, and is thus discharged out of the pot lid body 1, and a portion of the steam condenses into condensed water in the exhaust channel 51, and the exhaust channel 51 is isolated from the inside of the pot lid body 1, so that water vapor cannot directly enter the cavity of the pot lid body 1, thereby preventing steam from condensing and remaining in the pot lid body 1, thereby solving both the problem of condensed water and the problem of clean and healthy drinking water.

[0049] When the kettle body accidentally topples over or turns over, the liquid in the water containing cavity 8 will generate an impact force on the bottom of the kettle cover body 1, and a part of the liquid will impact the first reflux port 12 and the second reflux port 16. The flowing liquid fills the reflux pipe 42 and causes the reflux pipe 42 to expand slightly, and most of the flow impact force is relieved. After the impact force is relieved, the liquid flows back to the water containing cavity 8, and a small part of the liquid will impact the air inlet 11, and then the flowing liquid enters the exhaust pipe 52. Since the exhaust pipe 52 is designed in a winding direction and its inner diameter is smaller than that of the reflux pipe 42, a part of the liquid entering the exhaust pipe 52 will remain in the exhaust pipe 52 and is not easy to overflow. Therefore, the above structure enables the internal pressure relief and anti-dumping functions of the electric kettle to be realized, and also solves the problem of healthy drinking water.

[0050] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. An internal pressure relief anti-dumping electric kettle lid, comprising a lid body (1) and a water sealing assembly (2), wherein a water outlet (14) is provided on the side of the lid body (1), a water inlet (13) is provided at the bottom of the lid body (1), the water sealing assembly (2) is slidably connected to the lid body (1) and blocks the water inlet (13), and an air inlet (11) is provided at the bottom of the lid body (1), characterized in that: The lower part of the pot cover body (1) is also provided with a first reflux port (12) and a second reflux port (16); the pot cover body (1) is provided with an exhaust port (15) which is in communication with the water outlet (14); an exhaust pressure relief component (5) and a reflux component (4) are provided in the pot cover body (1); an exhaust channel (51) is provided in the exhaust pressure relief component (5); a reflux channel (41) is provided in the reflux component (4); an air inlet end of the exhaust channel (51) is connected to the air inlet port (11); an air outlet end of the exhaust channel (51) is connected to the exhaust port (15); and the reflux channel (41) is connected to the first reflux port (12) and the second reflux port (16), respectively; The exhaust pressure relief assembly (5) comprises an air inlet connection portion (54), an exhaust pipe (52), and an exhaust port connection portion (53) in sequence; the exhaust passage (51) is arranged in the exhaust pipe (52); the air inlet (11) and the air inlet connection portion (54) are interference fit; and the exhaust port connection portion (53) and the exhaust port (15) are interference fit; The exhaust pipe (52) is wound around the pot cover body (1), and the pot cover body (1) is provided with at least one limiting rib (17) and the direction of the exhaust pipe (52) is limited by the limiting rib (17); The reflux assembly (4) comprises in sequence a first reflux connection portion (43), a reflux pipe (42), and a second reflux connection portion (44); the reflux channel (41) is arranged in the reflux pipe (42); the first reflux connection portion (43) is interference-fitted with the first reflux port (12); and the second reflux connection portion (44) is interference-fitted with the second reflux port (16); The ratio of the inner diameter of the return pipe (42) to the inner diameter of the exhaust pipe (52) is R3,1 <R3≤5。 2. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The ratio of the inner diameter of the exhaust pipe (52) to the inner diameters of the exhaust port connecting portion (53) and the air inlet connecting portion (54) is R1, and 0.2≤R1≤1.

3. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The number of the limiting ribs (17) is 5.

4. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The ratio of the inner diameter of the reflux pipe (42) to the inner diameters of the first reflux connection portion (43) and the second reflux connection portion (44) is R2, and 0.2≤R2≤1.

5. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The ratio of the tube wall thickness of the return pipe (42) to the tube wall thickness of the exhaust pipe (52) is R4, and 0.3≤R4<1.

6. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The exhaust pressure relief component (5) and the reflux component (4) are made of food-grade silicone or food-grade plastic.

7. The inner pressure relief anti-dumping electric kettle lid according to claim 1, characterized in that: The water sealing assembly (2) comprises an umbrella cap (6), a switch unit (3), and an elastic mechanism (7); the upper portion of the elastic mechanism (7) contacts the switch unit (3); the lower portion of the elastic mechanism (7) contacts the umbrella cap (6); the switch unit (3) limits the vertical sliding stroke of the umbrella cap (6) through the elastic mechanism (7); the umbrella cap (6) matches the water inlet (13); a sealing ring (61) is provided on the umbrella cap (6) and the water inlet (13) is blocked by the sealing ring (61).

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