CN218899192U - Cap assembly and liquid heating container - Google Patents

Abstract

The application provides a lid subassembly and liquid heating container, the lid subassembly includes: the lower cover is provided with at least two overflow preventing columns protruding upwards, a hollow part is arranged in each overflow preventing column, a steam inlet penetrating through the lower cover is arranged in each overflow preventing column, and the steam inlets are communicated with the hollow part; the anti-toppling valve is arranged in the hollow part, one of the outer side wall of the anti-toppling valve and the inner side wall of the hollow part is provided with a threaded part, the other is a smooth column, and a spiral channel is formed between the threaded part and the smooth column. The lid subassembly that this aspect embodiment provided, heliciform passageway can play the effect of discharge steam to, also can block the impact at the instantaneous rivers that liquid heating container emptyd, thereby can prevent effectively that the water in the container body from spilling by preventing empting valve department, satisfy the demand of liquid heating container under preventing empting the state.

Description

Cap assembly and liquid heating container

Technical Field

The application relates to the technical field of household appliances, in particular to a cover body assembly and a liquid heating container.

Background

At present, in order to ensure the efficiency and the heat preservation performance of water heating, a sealing structure is mostly adopted by a kettle cover of a liquid heating container in the market, and in order to avoid danger caused by overlarge internal pressure of the kettle body due to a large amount of steam generated during water heating, a toppling-proof kettle cover is designed for smooth discharge of steam, and the toppling-proof kettle cover can also prevent water from being sprayed out when the liquid heating container topples. The existing anti-toppling kettle cover generally comprises at least two exhaust pipelines and at least two steel balls, and is multiple in parts, complex in structure, high in part processing cost, complex in assembly process and long in time consumption.

Disclosure of Invention

The present application aims to solve at least one of the technical problems in the prior art or related art described above.

To this end, a first aspect of the present application is to provide a cover assembly.

A second aspect of the present application is to provide a liquid heating vessel.

According to a first aspect of the present utility model, there is provided a cap assembly for covering a top opening of a container body of a liquid heating container, the cap assembly comprising: the lower cover is provided with at least two overflow preventing columns protruding upwards, a hollow part is arranged in each overflow preventing column, a steam inlet penetrating through the lower cover is arranged in each overflow preventing column, and the steam inlets are communicated with the hollow part; the anti-toppling valve is arranged in the hollow part, one of the outer side wall of the anti-toppling valve and the inner side wall of the hollow part is provided with a threaded part, the other is a smooth column, and a spiral channel is formed between the threaded part and the smooth column.

The cover body assembly that this aspect embodiment provided is provided with the anti-overflow post on the lower cover, and the valve of preventing empting is installed in the cavity of anti-overflow post to, one of the lateral wall of valve of preventing empting and the inside wall of cavity is provided with screw thread portion, and another is the plain noodles post, forms heliciform passageway between screw thread portion and the plain noodles post, and heliciform passageway can play the effect of discharge steam, and also can block the impact of the instantaneous rivers that emptys at the liquid heating container, thereby can prevent effectively that the water in the container body from spilling by the valve department of preventing empting. Specifically, in the case where the liquid heating vessel is in a normal state, the spiral-shaped passage is capable of discharging the vapor in the vessel body; under the condition that the liquid heating container is in the dumping state, one dumping prevention valve can enter the water, liquid can only slowly pass through the spiral channel and even cannot completely pass through the spiral channel, liquid is prevented from flowing out of the cover body assembly, the other dumping prevention valve is higher than the liquid level, steam can be discharged from the spiral channel with a high liquid level to be discharged, pressure relief is carried out, the danger caused by incapability of discharging steam in the container body and overlarge pressure is avoided, and then the requirement of the liquid heating container in the dumping prevention state is met.

Further, compare in the correlation technique prevent empting the structure that pot lid generally includes two at least exhaust piping and two at least steel balls, the technical scheme of this application, only through prevent empting the realization of valve and anti-overflow post and prevent empting the function, and normal exhaust function, the part is few, greatly reduced manufacturing cost to, also simplified the assembly process of lid subassembly, improved production efficiency.

In addition, the cover assembly provided in the foregoing embodiments of the present application may further have the following additional technical features:

in some embodiments, the difference between the diameter of the threaded portion and the diameter of the smooth post ranges from-0.5 mm to 0.5mm. In the range, the air tightness of the spiral channel formed by surrounding between the threaded part and the smooth surface column can be ensured, and the phenomenon that the anti-toppling valve is difficult to install in the anti-overflow column or is easy to loosen and fall when being installed in the anti-overflow column due to the fact that the diameter difference between the threaded part and the diameter of the smooth surface column is too small or too large is avoided. Specifically, the range comprises 3 matching conditions of the threaded part and the smooth column, namely, a gap is formed between the threaded part and the smooth column, the unilateral size of the gap is smaller than or equal to 0.25mm, the gap size is small, steam or water flowing out of the gap is small, the steam or water can be ignored, most of the steam and water still needs to flow out through a spiral channel, therefore, water in the container body can be effectively prevented from being spilled out of the anti-toppling valve, and the anti-toppling valve is not easy to loosen and fall in the anti-toppling column due to the small gap; and if the clearance value between the thread part and the smooth column is larger than 0.25mm, when the liquid heating container is toppled, the spiral channel positioned below can spray high temperature water. Secondly, the difference between the diameters of the thread part and the smooth column is 0mm, and the thread part and the smooth column are just attached under the condition, so that the spiral channel can be ensured to have good steam discharging effect and the effect of effectively preventing water in the container body from being spilled out from the anti-toppling valve. Thirdly, interference fit between screw thread portion and plain noodles post, unilateral interference volume is less than or equal to 0.25mm, can not cause and prevent empting the valve and be difficult to install in the anti-overflow post to if unilateral interference volume is greater than 0.25mm, can lead to the heliciform passageway too narrow, the high temperature gas in the liquid heating container can not in time get rid of, can produce the security risk.

In some embodiments, the anti-toppling valve is provided with a threaded portion on an outer side wall, and an inner side wall of the hollow portion is a smooth column. So set up, set up screw thread portion on the lateral wall of anti-toppling valve to make the inside wall of well hollow portion be plain noodles post, can simplify the structure of mould, make things convenient for the injection moulding of lower cover.

In some embodiments, the threaded portion includes one thread that is wrapped multiple times along the height of the anti-toppling valve. So set up for the length of screw portion is longer, is difficult to spill liquid, specifically, in the case that liquid heating container emptys, liquid in the container body will slowly pass through spiral passageway to prevent liquid spill as far as possible.

In some embodiments, the threaded portion includes a plurality of threads that are juxtaposed and wrapped multiple times along the height of the anti-toppling valve. So set up, the ventilation area of the heliciform passageway that forms between many screw threads and the inside wall of cavity is bigger, and the speed of exhaust steam is faster, avoids the inside unable discharge of too much steam of accumulation, pressure too big and the emergence danger of container body.

In some embodiments, the cover assembly further comprises: the anti-overflow valve plate is provided with an insurance air inlet, an insurance air outlet and an insurance channel which is communicated with the insurance air inlet and the insurance air outlet, the insurance air inlet is communicated with the steam inlet, and the anti-overflow valve plate seals the insurance air outlet; wherein, under the condition that the pressure in the container body is greater than the threshold value, the pressure can dash the spill-proof valve.

In the embodiments, under the state that the internal pressure of the liquid heating container is normal, the anti-overflow gasket can inhibit steam or liquid from directly passing through the passage of the safety air inlet, the safety channel and the safety air outlet, so that the safety air outlet can be blocked under the state that the liquid heating container is toppled over, and liquid is prevented from being spilled out; the safety air inlet, the safety channel, the safety air outlet and the anti-overflow valve are arranged in order to avoid the hurt of people caused by the hot water spray out due to the overlarge gas pressure in the container body under the condition that all the spiral channels are blocked. Specifically under the condition that the pressure in the liquid heating container exceeds a set threshold value, steam in the container body can enter the safety air inlet, the safety channel and the safety air outlet and rush out the anti-overflow valve sheet, so that the steam is rapidly discharged from the safety outlet, and the danger caused by incapability of discharging the steam in the container body and overlarge pressure is avoided.

In some embodiments, the tip of the anti-toppling valve is provided with a fixing portion, the anti-overflow valve sheet is provided with a mating portion, and the fixing portion and the mating portion are mated with each other so that the anti-overflow valve sheet is connected to the tip of the anti-toppling valve. So set up, the top of anti-overflow valve piece and anti-toppling valve is realized connecting through fixed part and cooperation portion, has realized the installation of anti-overflow valve piece.

In some embodiments, the fixing portion is a hook, and the matching portion is a hole, and the hook passes through the hole and can hook the upper surface of the anti-overflow valve sheet, so that the anti-overflow valve sheet is attached to the upper surface of the anti-toppling valve. So set up, trip and draw-in hole both have convenient assembly, have better cohesion again, difficult pine takes off, trip and draw-in hole cooperation use, under normal use condition, the trip catches on the upper surface of anti-overflow valve piece makes the anti-overflow valve piece laminating at the surface of anti-toppling valve and blocks up the insurance gas outlet, under the inside atmospheric pressure effect of container body, the anti-overflow gasket is forced to warp when unusual condition, the insurance gas outlet is opened, gas can be discharged the pressure release by the insurance gas outlet, in addition, after the inside pressure of container body resumes normal pressure, the shape recovery of anti-overflow valve piece, continue shutoff insurance gas outlet, thereby can repetitious usage.

In some embodiments, a downward protruding bulge is arranged on the bottom surface of the anti-toppling valve, and an air guide port is arranged on the side part of the bulge and is communicated with the steam inlet and the safety air inlet. The convex part is arranged between the lower cover and the bottom surface of the anti-toppling valve, so that the anti-toppling valve can be supported, and the safety air inlet on the bottom surface of the anti-toppling valve is prevented from being blocked due to the fact that the bottom surface of the anti-toppling valve is directly contacted with the lower cover; and the air guide opening is arranged at the side part of the protruding part and is communicated with the steam inlet and the safety air inlet, so that the structure is simplified and the arrangement is convenient.

In some embodiments, the steam inlet is offset from the safety air inlet in a horizontal direction. So set up, when the liquid heating container emptys, the impact force of the inside water of container body can not directly act on the insurance air inlet via the steam inlet, can avoid like this in the moment that the liquid heating container emptys, because the impact force that the water rocked and produced on the spill-proof valve piece and lead to the spill-proof valve piece to be washed away to ensure that the spill-proof valve piece can be in the shutoff insurance gas outlet under the state of empting of liquid heating container, avoid liquid spill.

In some embodiments, the steam inlet is located at a side edge of the bottom wall of the hollow portion remote from the center of the lower cover. The steam inlet is located on the bottom wall of the hollow portion and close to the peripheral edge of the lower cover as far as possible, and therefore under the condition that the liquid heating container is in a toppling state, the toppling prevention valve located on the upper side can be located at a higher position, so that risks of being overwater can be reduced as far as possible, a passage can be kept, steam can be ensured to flow out of the spiral passage, risks caused by incapability of discharging steam in the container body and overlarge pressure are avoided, and the requirements of the liquid heating container in the toppling prevention state are further met.

In some embodiments, the cover assembly further comprises: the middle cover is connected above the lower cover, an air guide channel is formed by enclosing between the lower surface of the middle cover and the lower cover, and a steam outlet communicated with the outside is arranged on the side wall of the lower cover and/or the middle cover, and the air guide channel is communicated with the spiral channel and the steam outlet.

In the embodiments, the anti-toppling valve is arranged to form an air guide channel with the lower cover and the middle cover, and the steam outlet is arranged on the middle cover and/or the lower cover, so that steam discharged from the spiral channel of the anti-toppling valve can directly flow to the steam outlet through the air guide channel, the steam can quickly reach the steam outlet, and then the steam outlet is used for discharging the cover body assembly, so that the time from boiling to power switch jumping is shortened, the contact surface of steam condensation is reduced, and the generation of condensed water in the cover body assembly is reduced.

According to a second aspect of the present utility model there is provided a liquid heating vessel comprising: the container comprises a container body, wherein the top of the container body is provided with an opening; and the cover body component according to any one of the technical schemes, wherein the cover body component is covered at the opening.

The liquid heating container provided in this embodiment has the beneficial effects of any one of the above technical solutions due to the cover assembly of any one of the above technical solutions, and is not described in detail herein.

In some embodiments, the liquid heating vessel further comprises a pouring gate and a handle which are arranged oppositely, and a steam switch is arranged in the handle; the number of the anti-toppling valves is two, and the two anti-toppling valves are symmetrically arranged along a connecting line between the pouring nozzle and the handle.

In these embodiments, because the handle is used as the fulcrum when the liquid heating container is toppled over, two anti-toppling valves are symmetrically arranged on the connecting line between the water pouring port and the handle, so that the liquid heating container can have one anti-toppling valve which can not be used by the water surface no matter what side is toppled over, the upper anti-toppling valve keeps the passage, steam is ensured to flow out of the spiral passage, the danger caused by the fact that steam in the container body cannot be discharged and the pressure is too large is avoided, and the requirement of the liquid heating container in the anti-toppling state is further met. Further, a steam switch is arranged in the handle, specifically, a container steam outlet is arranged on the container body, the container steam outlet is communicated with the steam outlet and is further communicated to the interior of the handle, so that steam in the cover body assembly can flow into the handle through the steam outlet and the container steam outlet, and is condensed in the handle or discharged to the outside; further, steam can trigger a steam switch under a certain condition, so that abnormal operation of the liquid heating container is avoided, danger caused by dry heating is prevented, and the safety of products is improved.

Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.

Drawings

The above and other objects and features of the present utility model will become more apparent from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded view of a cap assembly provided in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional structural view of a cover assembly provided in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a cap assembly capable of showing a pour valve according to an embodiment of the present utility model, the spill valve flap being shown in a closed position;

FIG. 4 is a schematic cross-sectional view of a cap assembly capable of showing a pour valve according to an embodiment of the present utility model, the valve flap being in an open state;

FIG. 5 is another cross-sectional schematic view of a cap assembly capable of showing a pour valve according to an embodiment of the present utility model, the spill valve flap being shown in a closed position;

FIG. 6 is another cross-sectional schematic view of a cap assembly capable of showing a pour valve according to an embodiment of the present utility model, the spill valve flap being in an open state;

FIG. 7 is a schematic top view of a portion of the structure of a cover assembly provided in accordance with an embodiment of the present utility model;

fig. 8 is a schematic view of a structure of a cap assembly in an inverted state provided according to an embodiment of the present utility model;

FIG. 9 is another schematic top view of a portion of the structure of a cover assembly provided in accordance with an embodiment of the present utility model;

FIG. 10 is a schematic structural view of an anti-toppling valve of a cap assembly provided in accordance with an embodiment of the present utility model;

fig. 11 is a schematic view showing a structure of an anti-toppling valve of a cap assembly in an inverted state according to an embodiment of the present utility model.

Fig. 1 to 11 reference numerals illustrate:

10 lower cover, 110 overflow preventing column, 111 hollow part, 120 steam inlet,

20 anti-toppling valve, 210 screw thread part, 220 safety air inlet, 230 safety channel, 240 safety air outlet, 250 bulge part, 260 air guide port, 270 trip,

30 spill-proof valve plate, 310 snap-in hole,

40, a steam outlet of 410,

a 50 a top cover is provided with a plurality of holes,

60 container body, 610 opening, 620 pour spout, 630 container vapor outlet.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the disclosure of the present application. For example, the order of operations described herein is merely an example and is not limited to those set forth herein, but may be altered as will be apparent after an understanding of the disclosure of the present application, except for operations that must occur in a particular order. Furthermore, descriptions of features known in the art may be omitted for clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and/or systems described herein, which will be apparent after an understanding of the present disclosure.

As used herein, the term "and/or" includes any one of the listed items associated as well as any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

In the description, when an element such as a layer, region or substrate is referred to as being "on" another element, "connected to" or "coupled to" the other element, it can be directly "on" the other element, be directly "connected to" or be "coupled to" the other element, or one or more other elements intervening elements may be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" or "directly coupled to" another element, there may be no other element intervening elements present.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, amounts, operations, components, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, amounts, operations, components, elements, and/or combinations thereof. The term "plurality" represents two and any number of two or more.

The definition of the terms "upper", "lower", "top" and "bottom" in this application are all based on the orientation of the air fryer when in normal use, standing upright.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. Unless explicitly so defined herein, terms such as those defined in a general dictionary should be construed to have meanings consistent with their meanings in the context of the relevant art and the present utility model and should not be interpreted idealized or overly formal.

In addition, in the description of the examples, when it is considered that detailed descriptions of well-known related structures or functions will cause ambiguous explanations of the present utility model, such detailed descriptions will be omitted.

The lid assembly and liquid heating vessel of some embodiments of the present application will be described below in connection with fig. 1-11.

As shown in fig. 1 to 8, an embodiment of the first aspect of the present utility model provides a cap assembly for covering a top opening 610 of a container body 60 of a liquid heating container, the cap assembly comprising: the lower cover 10, there are at least two overflow preventing columns 110 protruding upwards on the lower cover 10, the inside of the overflow preventing column 110 has hollow part 111, and there is steam inlet 120 penetrating the lower cover 10 in each overflow preventing column 110, the steam inlet 120 communicates with hollow part 111; the anti-toppling valve 20 is disposed in the hollow portion 111, one of an outer side wall of the anti-toppling valve 20 and an inner side wall of the hollow portion 111 is provided with a threaded portion 210, the other is a smooth pillar, and a spiral channel is formed between the threaded portion 210 and the smooth pillar.

In the cap assembly provided in this embodiment, the lower cap 10 is provided with the anti-overflow column 110, the anti-toppling valve 20 is installed in the hollow portion 111 of the anti-overflow column 110, and one of the outer sidewall of the anti-toppling valve 20 and the inner sidewall of the hollow portion 111 is provided with the threaded portion 210, the other is a smooth surface column, a spiral channel is formed between the threaded portion 210 and the smooth surface column, the spiral channel can play a role of exhausting steam, and the impact of instant water flow toppling over in the liquid heating container can be blocked, so that water in the container body 60 can be effectively prevented from being spilled out from the anti-toppling valve 20. Specifically, in the case where the liquid heating vessel is in a normal state, the spiral-shaped passage is capable of discharging the vapor in the vessel body 60; under the condition that the liquid heating container is in the dumping state, one dumping preventing valve 20 can enter water, liquid can only slowly pass through the spiral channel, even cannot completely pass through the spiral channel, liquid is prevented from flowing out of the cover body assembly, the other dumping preventing valve 20 is higher than the liquid level, steam can be discharged from the spiral channel with a high liquid level to be decompressed, dangers caused by incapability of discharging steam and overlarge pressure in the container body 60 are avoided, and then the requirement of the liquid heating container in the dumping preventing state is met.

Further, compared with the structure that the anti-toppling kettle cover generally comprises at least two exhaust pipelines and at least two steel balls in the related art, the anti-toppling kettle cover has the advantages that the anti-toppling function and the normal exhaust function can be realized by only matching the anti-toppling valve 20 with the anti-overflow column 110, the parts are few, the production cost is greatly reduced, in addition, the assembly process of the cover component is simplified, and the production efficiency is improved.

In some embodiments, the difference between the diameter of the threaded portion 210 and the diameter of the light post ranges from-0.5 mm to 0.5mm. Within this range, the tightness of the spiral passage formed by the screw portion 210 and the smooth pillar is ensured, and the anti-toppling valve 20 is not easily installed in the anti-overflow pillar 110 due to too small or too large difference between the diameter of the screw portion 210 and the diameter of the smooth pillar, or the anti-toppling valve 20 is easily loosened and dropped when installed in the anti-overflow pillar 110. Specifically, the range includes 3 matching conditions of the threaded portion 210 and the light post, namely, a gap is formed between the threaded portion 210 and the light post, the unilateral dimension of the gap is less than or equal to 0.25mm, the gap dimension is small, steam or water flowing out of the gap is small, and can be ignored, most of the steam and water still need to flow out through the spiral channel, so that the water in the container body 60 can be effectively prevented from being spilled out of the anti-toppling valve 20, and the anti-toppling valve 20 is not easy to loosen and fall in the anti-overflow post 110 due to the small gap; and if the clearance between the screw portion 210 and the light pillar is greater than 0.25mm, the spiral channel located below will spray high temperature water when the liquid heating vessel is toppled over. Secondly, the difference between the diameters of the threaded portion 210 and the smooth column is 0mm, and in this case, the threaded portion 210 and the smooth column are just attached to each other, so that the spiral channel can be ensured to have good steam discharging effect and the effect of effectively preventing water in the container body 60 from being spilled out from the anti-toppling valve 20 can be ensured. Thirdly, interference fit between the threaded portion 210 and the plain end column, the single-sided interference is less than or equal to 0.25mm, so that the anti-toppling valve 20 is not difficult to install in the anti-overflow column 110, and if the single-sided interference is greater than 0.25mm, the spiral channel is too narrow, high-temperature gas in the liquid heating container cannot be removed in time, and safety risks can be generated.

In some embodiments, as shown in fig. 1 to 7, 10 and 11, the outer sidewall of the anti-toppling valve 20 is provided with a threaded portion 210, and the inner sidewall of the hollow portion 111 is a smooth pillar. By arranging the screw portion 210 on the outer side wall of the anti-toppling valve 20 and making the inner side wall of the hollow portion 111 be a smooth column, the structure of the mold can be simplified, and the injection molding of the lower cover 10 is facilitated.

With respect to the specific structure of the threaded portion 210, in some embodiments, as shown in fig. 1, 10 and 11, the threaded portion 210 includes one thread, which is wound a plurality of times in the height direction of the anti-toppling valve 20. So configured, the length of the threaded portion 210 is made longer and liquid is not easily spilled, particularly, in the case of pouring of a liquid heating container, the liquid in the container body 60 will slowly pass through the spiral-shaped passage, thereby preventing liquid from being spilled as much as possible.

With respect to the specific structure of the threaded portion 210, in some embodiments, the threaded portion 210 includes a plurality of threads (not shown) that are disposed in parallel and that are wound a plurality of times along the height of the anti-toppling valve 20. In this way, the ventilation area of the spiral channel formed between the plurality of threads and the inner side wall of the hollow portion 111 is larger, the steam discharging speed is higher, and the danger caused by excessive accumulated steam in the container body 60 and excessive pressure can be avoided.

In some embodiments, as shown in fig. 1, 3, 4, 5, 6, and 9, the cover assembly further comprises: the anti-overflow valve plate 30, the anti-toppling valve 20 is provided with a safety air inlet 220, a safety air outlet 240 and a safety channel 230 which is communicated with the safety air inlet 220 and the safety air outlet 240, the safety air inlet 220 is communicated with the steam inlet 120, and the anti-overflow valve plate 30 seals the safety air outlet 240; wherein, in case the pressure inside the container body 60 is greater than the set threshold value, the pressure can rush out the spill-proof valve plate 30.

In these embodiments, in the state that the internal pressure of the liquid heating container is normal, the anti-overflow gasket can inhibit the vapor or liquid from directly passing through the channels of the safety air inlet 220, the safety channel 230 and the safety air outlet 240, so that the safety air outlet 240 can be blocked in the state that the liquid heating container is toppled over, and the liquid is prevented from being spilled out; the safety gas inlet 220, the safety passage 230, the safety gas outlet 240 and the anti-overflow valve 30 are provided to prevent the hot water from being sprayed out to hurt people due to the excessive gas pressure in the container body 60 under the condition that all the spiral passages are blocked. Particularly, under the condition that the pressure in the liquid heating container exceeds the set threshold, the steam in the container body 60 can enter the safety air inlet 220, the safety channel 230 and the safety air outlet 240 and flush the anti-overflow valve plate 30, so that the steam is rapidly discharged from the safety air outlet, and the danger caused by incapability of discharging the steam in the container body 60 and overlarge pressure is avoided.

In some embodiments, as an example, optionally, as shown in fig. 10 and 11, the safety air inlet 220 is located at the bottom end of the anti-toppling valve 20, the safety air outlet 240 is located at the top end of the anti-toppling valve 20, and the safety air inlet 220 and the safety air outlet 240 are disposed at two ends of the anti-toppling valve 20 on the next side, which is convenient for disposition, and makes the safety channel 230 linear, so that smooth air outlet of the safety channel 230 is facilitated.

In some embodiments, as shown in fig. 5, 10 and 11, the tip of the anti-toppling valve 20 is provided with a fixing portion, and the anti-overflow valve sheet 30 is provided with a mating portion, and the fixing portion and the mating portion are mated with each other so that the anti-overflow valve sheet 30 is connected to the tip of the anti-toppling valve 20. So set up, the top of spill valve 30 and anti-toppling valve 20 is realized connecting through fixed part and cooperation portion, has realized the installation of spill valve 30. Alternatively, the fixing portion and the mating portion may be a combination of threaded holes, screws, or a combination of a buckle and a buckle position, or a combination of the hook 270 and the hook hole 310, as examples, may serve as a connection.

In some embodiments, as shown in fig. 5, 10 and 11, the fixing portion is a hook 270, the mating portion is a hook hole 310, and the hook 270 passes through the hook hole 310 and can hook the upper surface of the spill valve 30, so that the spill valve 30 is attached to the upper surface of the pouring valve 20. So set up, trip 270 and draw-in hole 310 both have convenient assembly, have better cohesion again, difficult pine takes off, trip 270 and draw-in hole 310 cooperation use, under normal use condition, trip 270 catches on the upper surface of anti-overflow valve piece 30 so that anti-overflow valve piece 30 laminating is at the surface of anti-toppling valve 20 and blocks up insurance gas outlet 240, when under the unusual condition, under the inside atmospheric pressure effect of container body 60, the anti-overflow gasket is forced to be out of shape, insurance gas outlet 240 is opened, gas can be discharged by insurance gas outlet 240 and is released, in addition, after the inside pressure of container body 60 resumes normal pressure, the shape recovery of anti-overflow valve piece 30, continue shutoff insurance gas outlet 240, thereby can repetitious usage.

In practical application, optionally, the pressure relief valve block is thin plastic sheet, has advantages of low cost, convenient processing production, and because the thinner plastic sheet has good elasticity, can recover after bending, therefore, can also timely recover after being flushed by steam, continue to block the safety air outlet 240, and has high reliability and long service life.

In some embodiments, as shown in fig. 3, 4, 10 and 11, a downward protruding protrusion 250 is provided on the bottom surface of the anti-toppling valve 20, and the side of the protrusion 250 has an air guide port 260, and the air guide port 260 communicates with the steam inlet 120 and the safety air inlet 220. So configured, the protrusion 250 is located between the lower cover 10 and the bottom surface of the anti-toppling valve 20, and can play a role in supporting the anti-toppling valve 20, so as to prevent the bottom surface of the anti-toppling valve 20 from directly contacting the lower cover 10 to cause the safety air inlet 220 located on the bottom surface of the anti-toppling valve 20 to be blocked; in addition, the air guide 260 is arranged at the side of the protruding part 250 to communicate the steam inlet 120 with the safety air inlet 220, thereby simplifying the structure and facilitating the arrangement.

In practical applications, alternatively, the number of the protruding portions 250 is plural, and the plurality of protruding portions 250 can stably support the bottom surface of the anti-toppling valve 20, further, a gap is provided between two adjacent protruding portions 250, and the gap serves as the air guide port 260 to communicate the steam inlet 120 with the safety air inlet 220.

In some embodiments, as shown in fig. 3 and 4, the steam inlet 120 is offset from the relief air inlet 220 in a horizontal direction. So set up, when the liquid heating container emptys, the impact force of the inside water of container body 60 can not directly act on insurance air inlet 220 via steam inlet 120, can avoid in the moment that the liquid heating container emptys like this, because the impact force that the water rocked and produced on the spill-proof valve piece 30 and lead to spill-proof valve piece 30 to be washed away to ensure that spill-proof valve piece 30 can be in the shutoff insurance air outlet 240 under the state of empting of liquid heating container, avoid the liquid spill.

In some embodiments, as shown in fig. 7, the steam inlet 120 is located at a side edge of the bottom wall of the hollow 111 remote from the center of the lower cover 10. By means of the arrangement, the steam inlet 120 is located on the bottom wall of the hollow portion 111 as close to the peripheral edge of the lower cover 10 as possible, so that the anti-toppling valve 20 located on the upper side can be located at a higher position in the toppling state of the liquid heating container, the risk of being overwater can be reduced as completely as possible, a passage can be kept, steam can be ensured to flow out of the spiral passage, the situation that the steam in the container body 60 cannot be discharged, the danger caused by overlarge pressure is avoided, and the requirement of the liquid heating container in the toppling prevention state is further met.

In some embodiments, as shown in fig. 1, 2, 3, 4, 5, and 6, the cover assembly further comprises: the middle cover 40 is connected above the lower cover 10, an air guide channel is formed by enclosing the lower surface of the middle cover 40 and the lower cover 10, a steam outlet 410 communicated with the outside is arranged on the side wall of the lower cover 10 and/or the middle cover 40, and the air guide channel is communicated with the spiral channel and the steam outlet 410.

In these embodiments, by providing the anti-toppling valve 20 and the lower cover 10 and the middle cover 40 to form an air guide channel, and providing the steam outlet 410 on the middle cover 40 and/or the lower cover 10, the steam discharged from the spiral channel of the anti-toppling valve 20 can flow to the steam outlet 410 directly through the air guide channel, so that the steam can quickly reach the steam outlet 410, and then the steam outlet 410 discharges the cover assembly, thereby reducing the time from boiling to power switch jumping, reducing the contact surface of steam condensation, and reducing the generation of condensed water inside the cover assembly.

Further, in some embodiments, as shown in fig. 1 to 6, the cover assembly further includes an upper cover 50 mounted above the middle cover 40, and the upper cover 50 can shield the components located on the middle cover 40, which is beneficial to cleaning and aesthetic appearance of the cover assembly.

Further, in some embodiments, as shown in fig. 1 to 6, the cap assembly further includes a sealing ring sleeved on the outer circumference of the lower cap 10, so as to prevent water from flowing out between the cap assembly and the container body 60, and realize a sealing connection between the cap assembly and the container body 60.

According to a second aspect of the present utility model there is provided a liquid heating vessel comprising: a container body 60, the top of the container body 60 having an opening 610; and the cover assembly according to any one of the above claims, wherein the cover assembly is provided at the opening 610.

The liquid heating container provided in this embodiment has the beneficial effects of any one of the above technical solutions due to the cover assembly of any one of the above technical solutions, and is not described in detail herein.

In some embodiments, as shown in fig. 1, 2, 5 and 6, the liquid heating vessel further comprises a pouring spout 620 and a handle disposed opposite each other, the handle having a steam switch disposed therein; the number of the anti-toppling valves 20 is two, and the two anti-toppling valves 20 are symmetrically arranged along the line between the pouring spout 620 and the handle.

In these embodiments, since the handle is used as a fulcrum when the liquid heating container is toppled over, the two anti-toppling valves 20 are symmetrically arranged on the connecting line between the pouring spout 620 and the handle, so that no matter which side the liquid heating container is toppled over, one anti-toppling valve 20 can not be used by the water surface, the anti-toppling valve 20 on the upper side keeps a passage, steam is ensured to flow out of the spiral passage, the danger caused by that steam in the container body 60 cannot be discharged and the pressure is too high is avoided, and then the requirement of the liquid heating container in the anti-toppling state is met. Further, a steam switch is provided in the handle, specifically, a container steam outlet 630 is provided on the container body 60, the container steam outlet 630 is communicated with the steam outlet 410 and further communicated to the interior of the handle, so that the steam in the cover assembly can flow into the handle via the steam outlet 410 and the container steam outlet 630, and be condensed or discharged to the outside in the handle; further, steam can trigger a steam switch under a certain condition, so that abnormal operation of the liquid heating container is avoided, danger caused by dry heating is prevented, and the safety of products is improved.

Although embodiments of the present utility model have been described in detail hereinabove, various modifications and variations may be made to the embodiments of the utility model by those skilled in the art without departing from the spirit and scope of the utility model. It will be appreciated that such modifications and variations will be apparent to those skilled in the art that they will fall within the spirit and scope of the embodiments of the utility model as defined in the appended claims.

Claims (13)

1. A cover assembly, the cover assembly comprising:

a lower cover (10), wherein at least two overflow preventing columns (110) protruding upwards are arranged on the lower cover (10), a hollow part (111) is arranged in each overflow preventing column (110), a steam inlet (120) penetrating through the lower cover (10) is arranged in each overflow preventing column (110), and the steam inlet (120) is communicated with the hollow part (111);

the anti-toppling valve (20) is arranged in the hollow part (111), one of the outer side wall of the anti-toppling valve (20) and the inner side wall of the hollow part (111) is provided with a threaded part (210), the other is a smooth column, and a spiral channel is formed between the threaded part (210) and the smooth column.

2. The cover assembly of claim 1, wherein the cover assembly comprises a cover,

the difference between the diameter of the threaded portion (210) and the diameter of the light pillar is in the range of-0.5 mm to 0.5mm.

3. The cover assembly of claim 1, wherein the cover assembly comprises a cover,

the outer side wall of the anti-toppling valve (20) is provided with the threaded portion (210), and the inner side wall of the hollow portion (111) is the smooth column.

4. The cover assembly of claim 1, wherein the cover assembly comprises a cover,

the thread part (210) comprises a thread, and the thread winds a plurality of circles along the height direction of the anti-toppling valve (20); or (b)

The thread part (210) comprises a plurality of threads which are distributed in parallel and are wound for a plurality of circles along the height direction of the anti-toppling valve (20).

5. The cover assembly of claim 1, wherein the cover assembly further comprises:

the anti-overflow valve (30) is provided with an insurance air inlet (220), an insurance air outlet (240) and an insurance channel (230) which is communicated with the insurance air inlet (220) and the insurance air outlet (240), the insurance air inlet (220) is communicated with the steam inlet (120), and the anti-overflow valve (30) seals the insurance air outlet (240);

wherein, in case the pressure inside the container body (60) is greater than a set threshold value, the pressure can flush the spill-proof valve plate (30).

6. The cover assembly of claim 5, wherein the cover assembly comprises a cover,

the top of anti-toppling valve (20) is provided with fixed part, be provided with the cooperation portion on anti-toppling valve piece (30), fixed part with cooperation portion mutually support so that anti-toppling valve piece (30) are connected the top of anti-toppling valve (20).

7. The cover assembly of claim 6, wherein the cover assembly comprises a cover,

the fixed part is a clamping hook (270), the matching part is a clamping hole (310), and the clamping hook (270) penetrates through the clamping hole (310) and can hook the upper surface of the anti-overflow valve sheet (30), so that the anti-overflow valve sheet (30) is attached to the surface of the anti-toppling valve (20).

8. The cover assembly of claim 5, wherein the cover assembly comprises a cover,

the bottom surface of the anti-toppling valve (20) is provided with a downward protruding part (250), the side part of the protruding part (250) is provided with an air guide port (260), and the air guide port (260) is communicated with the steam inlet (120) and the safety air inlet (220).

9. The cover assembly of claim 5, wherein the cover assembly comprises a cover,

the steam inlet (120) and the safety air inlet (220) are arranged in a staggered manner in the horizontal direction.

10. The cover assembly of claim 9, wherein the cover assembly comprises a cover,

the steam inlet (120) is located at a side edge of the bottom wall of the hollow portion (111) away from the center of the lower cover (10).

11. The cover assembly of claim 1, wherein the cover assembly further comprises:

the middle cover (40) is connected above the lower cover (10), an air guide channel is formed by enclosing between the lower surface of the middle cover (40) and the lower cover (10), and a steam outlet (410) communicated with the outside is arranged on the side wall of the lower cover (10) and/or the side wall of the middle cover (40), and the air guide channel is communicated with the spiral channel and the steam outlet (410).

12. A liquid heating vessel comprising:

a container body (60), the top of the container body (60) having an opening (610); and

the cap assembly of any of claims 1 to 11, said cap assembly being capped at said opening (610).

13. A liquid heating vessel as claimed in claim 12 wherein,

the liquid heating container also comprises a water pouring port (620) and a handle which are oppositely arranged, and a steam switch is arranged in the handle;

the number of the anti-toppling valves (20) is two, and the two anti-toppling valves (20) are symmetrically arranged along a connecting line between the pouring nozzle (620) and the handle.

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