CN216147876U - Pressure regulating sealed thermos flask - Google Patents

Abstract

The utility model discloses a pressure-regulating sealed type heat preservation kettle which comprises a kettle body and a kettle cover, wherein the kettle cover comprises a cover body and a water outlet valve, the water outlet valve is arranged at the bottom of the cover body through a valve rod, the cover body is provided with a cover body bottom surface which is recessed upwards from the bottom edge of the cover body, the cover body is divided into an upper heat insulation cavity and a lower pressure regulating cavity by the cover body bottom surface, and when the water outlet valve is matched and sealed with the bottom edge of the cover body, the upper surface of the water outlet valve and the cover body bottom surface form the pressure regulating cavity. When steam is discharged from the kettle body in the kettle, the steam pressure can be effectively adjusted through the setting of the pressure regulating cavity, so that when the thermos is used for pouring water, the steam in the kettle is not discharged rapidly or even sprayed out, the steam is cooled for a sufficient time and is slowly discharged from the water outlet nozzle, and the probability of scalding a user is greatly reduced.

Description

Pressure regulating sealed thermos flask

Technical Field

The utility model relates to the technical field of heat preservation containers, in particular to a pressure-regulating sealed heat preservation kettle.

Background

The thermos flask is widely used for daily life of people and is mainly used for preserving hot water, but steam generated in the thermos flask by the hot water is very easy to scald people when a thermos flask cover is opened or the water is poured. In the prior art, a pressure relief structure is arranged in a heat preservation kettle, steam is discharged through the pressure relief structure when water is poured, and the probability of steam injection or scalding a water pouring person is greatly reduced.

For example, chinese patent No. 201210225990.X discloses a steam-proof vacuum bottle and a lid thereof, and the specific embodiment thereof discloses that the spindle 26 is moved downwards first by the main spring 7, the sealing ring 15 is separated from the sealing end cap 9 and the steam 16 in the bottle and the steam release chamber 13 are communicated by the gap 14. This public technique is through setting up steam release cavity for go out the interior steam of kettle and arrange pressure before the water, before need pouring water, open the breach, steam gets into steam release cavity and makes the inside and outside atmospheric pressure of kettle reach the equilibrium through the breach in the kettle. However, when the pressure in the kettle is high, the steam in the kettle rapidly enters the steam release chamber through the notch and is rapidly discharged through the water outlet, so that the possibility of scalding a user still exists, and even the probability of steam spraying out of the water outlet possibly exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art and provides a pressure-regulating sealed thermos flask which can reduce the probability of scalding users.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a pressure-regulating sealed type heat preservation kettle comprises a kettle body and a kettle cover, wherein the kettle cover comprises a cover body and a water outlet valve, the water outlet valve is installed at the bottom of the cover body through a valve rod, the cover body is provided with a cover body bottom surface which is recessed upwards from the bottom edge of the cover body, the cover body is divided into an upper heat insulation cavity and a lower pressure regulating cavity by the cover body bottom surface, and when the water outlet valve is matched and sealed with the bottom edge of the cover body, the upper surface of the water outlet valve and the cover body bottom surface form the pressure regulating cavity;

the kettle cover is provided with a water outlet nozzle communicated with the pressure regulating cavity, the inner cavity of the kettle body is communicated with the water outlet nozzle through the pressure regulating cavity, and the longitudinal distance of the pressure regulating cavity is increased from the valve rod to the bottom edge of the cover body.

Preferably, the outlet valve has a relief surface provided around the valve stem and a relief surface surrounding the relief surface, and the relief surface gradually decreases in height from an edge of the relief surface toward a bottom edge of the cover.

Preferably, the pressure release surface is a circular circumferential curved surface, and in a longitudinal section of the pressure release surface, a curvature radius of the pressure release surface gradually increases from an edge of the pressure relief surface to a bottom edge of the cover body.

Preferably, the pressure release surface forms a curved surface which is arched from the pressure regulating cavity to the inner cavity of the kettle body, and the pressure regulating cavity is instantly enlarged from the tail end of the pressure relieving surface to the pressure release surface.

Preferably, the kettle cover is provided with a water outlet channel for communicating the pressure regulating cavity and the water outlet nozzle, the water outlet channel is provided with a water inlet communicated with the pressure regulating cavity, and the water inlet is positioned above the pressure release surface.

Preferably, in a longitudinal cross section of the water outlet passage, the width of the water inlet covers a radial distance of the pressure release surface, and a proximal end of the water inlet close to the valve stem is located above a junction of the pressure release surface and the pressure relief surface.

Preferably, the pressure relief surfaces are horizontally arranged, and the distance between the pressure regulating cavities above the pressure relief surfaces is smaller than that above the pressure relief surfaces; or the pressure relief surface is arranged in an upwards arched curved surface, and the distance between the pressure relief surface and the bottom surface of the cover body is increased from small to large.

Preferably, the water outlet valve is provided with a pressure relief hole, the periphery of the pressure relief hole is provided with an installation boss for installing a water outlet spring, and the installation boss is provided with a pressure discharge notch; the bottom surface of the cover body on the opposite side of the water outlet nozzle is provided with exhaust holes, the exhaust holes are communicated with the heat insulation cavity and the pressure regulating cavity, the number of the pressure discharge notches is 2, and the 2 pressure discharge notches are oppositely arranged on the mounting boss and respectively face the water outlet nozzle and the exhaust holes.

Preferably, the bottom surface of the cover body is an arc surface, the valve rod is arranged at the highest position of the arc surface, and the longitudinal height of the bottom surface of the cover body is gradually reduced from the valve rod to the bottom edge of the cover body;

the water outlet valve is arched upwards from the radial edge to the direction of the valve rod, and the distance between the upper surface of the water outlet valve and the lower surface of the bottom surface of the cover body is unequal from the valve rod to the bottom edge of the cover body.

Preferably, the longitudinal distance between the pressure regulating cavities increases from the valve rod to the bottom edge of the cover body, and the water outlet nozzle is communicated to the position with the largest longitudinal distance between the pressure regulating cavities.

The utility model has the beneficial effects that:

1. the pressure-regulating sealed thermos flask is provided with the pressure-regulating cavity, when steam in the flask is discharged from the flask body, the steam pressure can be effectively regulated through the arrangement of the pressure-regulating cavity, so that when the thermos flask is used for pouring water, the steam in the flask cannot be rapidly discharged or even sprayed out, the steam is sufficiently cooled and slowly discharged at the water outlet nozzle, the steam cannot be sprayed out at the water outlet nozzle of the thermos flask or a large amount of high-temperature steam is discharged, and the probability of scalding a user is greatly reduced;

2. the space of the steam discharging path of the pressure-regulating sealed thermos flask is gradually increased from the pressure relief hole to the water outlet nozzle, so that the steam pressure is greatly reduced in the limited space in the flask cover, the steam is slowly discharged from the water outlet nozzle, and the probability of scalding a user is reduced.

Drawings

FIG. 1 is a schematic sectional view of a pressure-regulating sealed thermo jug according to the present invention;

FIG. 2 is a schematic cross-sectional view of the lid of the present invention;

FIG. 3 is a schematic view showing the structure of the bottom of the lid of the present invention;

FIG. 4 is a schematic structural view of the front of the outlet valve shown in the present invention;

FIG. 5 is a schematic view of the present invention showing the back of the water valve;

FIG. 6 is a schematic diagram of the position of the pressure relief valve of the present invention with respect to the outlet valve when the pressure relief valve is open;

FIG. 7 is a schematic diagram of the path of the steam vent when the pressure relief valve of the present invention is open;

FIG. 8 is a schematic view of the installation structure of the spindle, the fixing cover and the pressure relief spring according to the present invention;

FIG. 9 is a schematic structural view of a mandrel of the present invention;

FIG. 10 is a schematic cross-sectional view of a mandrel embodying a mounting channel of the present invention;

fig. 11 is a schematic structural view of the fixing cover of the present invention.

In the figure: 1. the kettle cover comprises a kettle cover body 11, a cover body 111, a cover body bottom surface 1111, an exhaust hole 12, a water outlet valve 121, a pressure relief surface 122, a pressure relief surface 123, an installation boss 124, a pressure relief notch 125, an opening 126, a pressure relief hole 13, a pressure relief valve 14, a heat insulation cavity 15, a pressure regulation cavity 16, a sleeve 161, a pressure relief spring 163, a fixing cover 1631, an installation hole 1632, a sliding piece 164, a water outlet spring 17, a water outlet nozzle 18, a water outlet channel 19, a water inlet 2, a kettle body 3, a core shaft 4, an installation channel 5, a limiting groove 6 and a connecting port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1-7, the pressure-regulating sealed thermos bottle of the present embodiment includes a bottle body 2 and a bottle lid 1, the bottle lid 1 includes a lid body 11 and a water outlet valve 12, the water outlet valve 12 is mounted at the bottom of the lid body 1 through a valve rod, the lid body 1 has a lid body bottom surface 111 recessed upwards from the bottom edge of the lid body 1, the lid body bottom surface 111 divides the lid body 1 into an upper thermal insulation cavity 14 and a lower pressure-regulating cavity 15, and when the water outlet valve 12 is sealed with the bottom edge of the lid body 11 in a matching manner, the upper surface of the water outlet valve 12 and the lid body bottom surface 111 form the pressure-regulating cavity 15;

the kettle cover 1 is provided with a water outlet nozzle 17 communicated with the pressure regulating cavity 15, the inner cavity of the kettle body 2 is communicated with the water outlet nozzle 17 through the pressure regulating cavity 15, and the longitudinal distance of the pressure regulating cavity 15 is increased from small to large from the valve rod to the bottom edge of the cover body 1.

Further, a sleeve 16 extending upwards from the bottom surface 111 of the cover body is arranged in the heat insulation cavity 14, a pressure relief hole 126 is formed in the water outlet valve 12, the valve rod penetrates through the bottom of the water outlet valve 12 and is installed in the sleeve 16, the valve rod is a core shaft 3 provided with a pressure relief valve 13, and the pressure relief valve 13 is matched and sealed with the pressure relief hole 126. The sleeve 16 performs a limiting installation function on the valve rod. Of course, in other embodiments, the valve rod may be directly inserted into the cover bottom surface 111 and may be mounted in a limited manner by the thickness of the cover bottom surface 111.

Specifically, as shown in fig. 2, the core shaft 3 is installed in the sleeve 16, the outlet valve 12 is provided with an opening 125 through which the core shaft 3 passes, the core shaft 3 passes through the opening 125 and is connected to the relief valve 13, the relief valve 13 is larger than the opening 125 in diameter, as shown in fig. 5, the relief hole 126 is a notch formed around the opening 125 on the outlet valve 12 and is sealed by the relief valve 13 in a matching manner, in an initial state, the outlet valve 12 is in sealing engagement with the bottom edge of the cover 11, and the relief valve 13 seals the relief hole 126 on the outlet valve 12. When carrying out the pressure release, press down dabber 3 and drive relief valve 13 and open pressure release hole 126 to steam discharges to pressure regulating cavity 15 through pressure release hole 126 in the kettle, because steam pressure is great in the kettle, steam gets into pressure regulating cavity 15 the time fast even spray and get into pressure regulating cavity 15, can greatly alleviate steam atmospheric pressure through pressure regulating cavity 15, make it pass through faucet 17 discharge thermo jug more slowly, and obtain sufficient cooling, reduce the probability that the user was scalded.

The cover body 11 is divided into the heat insulation cavity 14 and the pressure regulating cavity 15 by the cover body bottom surface 111, and steam in the kettle is discharged through the pressure regulating cavity 15 and cannot enter the heat insulation cavity 14, so that the top end of the kettle cover 1 cannot be scalded, and the use comfort of a user is increased.

In this embodiment, the kettle lid 1 is provided with a water outlet nozzle 17 communicated with the pressure regulating cavity 15, after the pressure relief valve 13 is opened in a sealed manner, the pressure regulating cavity 15 opens the water outlet valve 12 and the edge of the bottom of the lid body 11, and the inner cavity of the kettle body 2 is communicated with the water outlet nozzle 17 through the pressure regulating cavity 15.

When the steam in the kettle is discharged through the pressure relief hole 126, the air pressure in the inner cavity of the kettle body 2 is reduced, the water outlet valve 12 moves downwards under the action of gravity, so that the sealing between the water outlet valve 12 and the bottom edge of the cover body 11 is opened, the inner cavity of the kettle body 2 is communicated with the pressure regulating cavity 15, and the water in the kettle is poured out through the pressure regulating cavity 15.

In this embodiment, the outlet valve 12 has a pressure relief surface 121 disposed around the valve stem, and a pressure release surface 122 surrounding the pressure relief surface 121, wherein the height of the pressure release surface 122 gradually decreases from the edge of the pressure relief surface 121 toward the bottom edge of the cover 11, and the pressure release hole 126 communicates with the space above the pressure release surface 122 through the space above the pressure relief surface 121.

As shown in fig. 6 and 7, the steam in the kettle is discharged through the pressure relief hole 126, and firstly enters the space above the pressure relief surface 121 upwards to obtain a first pressure reduction, and is diffused towards the periphery under the limit of the bottom surface 111 of the cover body, namely enters the space above the pressure relief surface 122, the height of the pressure relief surface 122 gradually decreases from the edge of the pressure relief surface 121 to the bottom edge of the cover body 11, so that the steam is subjected to a second pressure reduction, and the steam diffusion direction is changed from the longitudinal direction to the transverse direction, so that the steam diffusion speed is reduced to avoid the steam from being ejected, and the channel length of the steam discharge path is lengthened, so that the steam obtains a sufficient cooling time.

In this embodiment, the pressure release surface 122 is an annular circumferential curved surface, and in a longitudinal section of the pressure release surface 122, a curvature radius of the pressure release surface 122 gradually increases from an edge of the pressure relief surface 121 toward a bottom edge of the cover 11.

The pressure release surface 122 forms a curved surface which is arched from the pressure regulating cavity 15 to the inner cavity direction of the kettle body 2, and the pressure regulating cavity 15 is instantly enlarged from the tail end of the pressure relieving surface 121 to the pressure release surface 122.

When the steam diffuses from the space above the pressure-relieving surface 121 to the space above the pressure-releasing surface 122, the steam pressure is instantaneously reduced, the steam diffusion speed is instantaneously reduced, then the steam is gradually diffused along the pressure-releasing surface 122, the increasing speed of the space above the pressure-releasing surface 122 is gradually reduced, and finally the steam is discharged to the water outlet nozzle 17 at a relatively slow speed, so that a good cooling effect can be achieved, and the probability of scalding a user is reduced.

In this embodiment, the kettle lid 1 is provided with a water outlet channel 18 for communicating the pressure regulating cavity 15 and the water outlet nozzle 17, the water outlet channel 18 is provided with a water inlet 19 communicated with the pressure regulating cavity 15, and the water inlet 19 is located above the pressure release surface 122.

The steam longitudinally diffuses from the pressure relief hole 126 to the upper part of the pressure relief surface 121, then diffuses from the upper part of the pressure relief surface 121 to the water inlet 19 all around, and then longitudinally diffuses from the water inlet 19 to the water outlet nozzle 17, so that the speed of the steam discharged from the water outlet nozzle 17 is greatly reduced, the probability of the steam being sprayed is reduced, and the probability of scalding the user of the thermos bottle is reduced.

In this embodiment, in a longitudinal cross section of the water outlet passage 18, the width of the water inlet 19 covers a radial distance of the pressure release surface 122, and a proximal end of the water inlet 19 near the valve stem is located above a connection point of the pressure release surface 122 and the pressure relief surface 121.

Under the longitudinal section of the water outlet channel 18, the width of the water inlet 19 of the water outlet channel 18 is not smaller than the radial distance of the pressure release surface 122, so that the steam is further slowly pressed when entering the water outlet channel 18 from the space above the pressure release surface 122, the steam outlet speed is further reduced, and the probability that the steam is sprayed due to the excessively high diffusion speed is avoided.

In this embodiment, the pressure relief surface 121 is horizontally disposed, and the distance between the pressure regulating cavities 15 above the pressure relief surface 121 is smaller than the distance between the pressure regulating cavities 15 above the pressure release surface 122. The steam enters the space above the pressure relief surface 122 from the space above the pressure relief surface 121, the entering space is increased, the steam pressure is reduced, and the steam outlet speed is reduced.

In other embodiments, the pressure-relieving surface 121 may also be an upwardly arched curved surface, and the distance between the pressure-relieving surface 121 and the bottom surface 111 of the cover body increases from the center to the periphery, so that the air pressure decreases gradually when the steam enters the space above the pressure-relieving surface 121 and diffuses to the periphery.

In this embodiment, the sleeve 16 penetrates from the heat insulation cavity 14 to the pressure regulating cavity 15, a pressure relief spring 161 is installed on the outer periphery of the sleeve 16 in the heat insulation cavity 14, and a water outlet spring 164 is installed on the outer periphery of the sleeve 16 in the pressure regulating cavity 15. In other embodiments, the cover 11 does not need to be provided with a sleeve, and the pressure relief spring 161 and the water outlet spring 164 may be directly sleeved outside the core shaft 3 and respectively located at the upper end and the lower end of the bottom surface 111 of the cover.

When the core shaft 3 is pressed, the pressure relief spring 161 is driven to compress, the pressure relief hole 126 is opened at the moment, steam in the thermos bottle is discharged through the pressure relief hole 126, then the water outlet valve 12 gradually moves downwards under the action of self gravity and the elastic force of the water outlet spring 164, so that water in the bottle can be poured out, the core shaft 3 is loosened, and the pressure relief spring 161 drives the core shaft 3 to reset.

Further, the mandrel 3 is provided with a mounting channel 4 and a limiting groove 5 communicated with the mounting channel 4 on the side wall, and the fixing cover 163 enters the limiting groove 5 through the mounting channel 4 and is fixed by the limiting groove 5. As shown in fig. 8 and 9.

Furthermore, a mounting hole 1631 is formed in the middle of the fixing cover 163, the fixing cover 163 is sleeved on the upper end of the core shaft 3 through the mounting hole 1631, and a sliding member 1632 matched with the mounting channel 4 is protruded on the inner wall of the mounting hole 1631. As shown in fig. 11.

Specifically, when the fixing cover 163 is sleeved on the core shaft 3, the sliding member 1632 enters the installation channel 4 and slides to the limiting groove 5 along the installation channel 4, at this time, the lower bottom surface of the fixing cover 163 is pressed by the pressure relief spring 161, the upper bottom surface is abutted against the upper inner wall of the limiting groove 5, and the side surface is limited by the inner side wall of the limiting groove 5, so that the axial and circumferential limiting of the fixing cover 163 on the core shaft 3 is realized. As shown in fig. 8, 9 and 11.

The limiting groove 5 is located on one side of the installation channel 4 and is communicated with the installation channel 4 through a connector 6, one end of the connector 6 is communicated with the installation channel 4, and the other end of the connector is communicated with the limiting groove 5. During the installation, establish pressure release spring 161 on dabber 3 earlier, then embolia dabber 3 along installation passageway 4 with fixed lid 163, and move down to connector 6 one end, then rotate fixed lid 163 and make it enter into spacing groove 5 along connector 6, then loosen fixed lid 163, fixed lid 163 is with the last inner wall looks butt of spacing groove 5 under pressure release spring 161's elastic force, and the side of fixed lid 163 is spacing by the inside wall of spacing groove 5, consequently, it is spacing to realize fixed lid 163 axial and circumferencial on dabber 3, realize the fixed lid of this embodiment and pressure release spring's fixed mounting promptly, whole installation is very convenient, need not use great external force to carry out cooperation such as joint. Similarly, when the cover is detached, the fixing cover 163 is driven to overcome the elastic force of the pressure relief spring 161 downward, and then enters the installation channel 4 through the connecting port 6, and finally moves out of the installation channel 4.

In this embodiment, the side wall of the installation channel 4 is inclined outward from the bottom thereof, that is, the cross section of the installation channel 4 is in a bell mouth shape, the sliding member 1632 of the fixing cover 163 is matched with the cross section of the installation channel 4, and the bell mouth-shaped installation channel 4 facilitates the insertion and sliding of the fixing cover 163. As shown in fig. 10.

In this embodiment, the mounting channel 4 is vertically disposed on the core shaft 3, which facilitates the mounting of the fixing cover 163. In other embodiments, the mounting channel 4 may be threaded, and the slider 1632 of the fixed cap 163 is rotated into the mounting channel 4. The bottom middle position of the installation passage 4 is upwardly protruded and the top surface of the slider 1632 of the fixed cover 163 is downwardly recessed corresponding thereto. The mating of the projections and recesses further facilitates sliding of the fixed cover 163 over the mounting channel 4 and reduces wobble. As shown in fig. 11.

In this embodiment, the diameter of the end of the mandrel 3 where the fixing cover 163 is provided is smaller than the diameter of the end of the mandrel 3 where the pressure release valve 13 is provided, so that the mandrel 3 where the fixing cover 163 is provided is not too large, the overall harmony and the attractiveness of the mandrel 3 are increased, and the raw materials are saved. As shown in fig. 9.

The sleeve 16 penetrates through the heat insulation cavity 14 and the pressure regulating cavity 15, so that the pressure relief spring 161 and the water outlet spring 164 can be conveniently installed and positioned, and the sleeve 16 and the bottom surface 111 of the cover body of the thermos flask are integrally formed, so that the manufacturing and the production are convenient.

One end of the pressure relief spring 161 abuts against the upper surface of the bottom 111 of the cover, and the other end of the pressure relief spring can be connected to the upper end of the core shaft 3 in a clamping manner, or can abut against a fixing cover 163 fixed to the upper end of the core shaft 3. One end of the water outlet spring 164 abuts against the lower surface of the bottom surface 111 of the cover body, and the other end abuts against the water outlet valve 12.

As shown in fig. 3 and 4, an installation boss 123 for installing a water outlet spring 164 is arranged on the periphery of the pressure relief hole 126 of the water outlet valve 12, and a pressure relief notch 124 is arranged on the installation boss 123.

The mounting boss 123 is used for mounting and positioning the water outlet spring 164. The sleeve 16 in the pressure regulating cavity 15 is arranged opposite to the mounting boss 123, and the pressure discharge gap 124 on the mounting boss 123 facilitates the diffusion of steam after being discharged from the pressure discharge hole 126, so that the probability that the steam is blocked by the mounting boss 123 is reduced.

The bottom surface 111 of the cover body on the opposite side of the water outlet nozzle 17 is provided with an exhaust hole 1111, the exhaust hole 1111 is communicated with the heat insulation cavity 14 and the pressure regulating cavity 15, the number of the pressure discharge notches 124 is 2, and the 2 pressure discharge notches 124 are oppositely arranged on the mounting boss 123 and respectively face the water outlet nozzle 17 and the exhaust hole 1111. The pressure regulating cavity 15 is provided with an air outlet communicated with the outside, and steam in the kettle can be discharged through the water outlet nozzle 17 and also can enter the heat insulation cavity 14 through the pressure regulating cavity 15 through the air outlet 1111 to be discharged to the outside. Exhaust hole 1111 is as supplementary exhaust of steam, and the diameter is not more than 1.5CM, avoids too much steam gathering and thermal-insulated chamber 14 and leads to heat preservation pot lid 1 top temperature too high, influences user experience and feels.

In this embodiment, the bottom surface 111 of the cover body is an arc surface, the valve rod is disposed at the highest position of the arc surface, and the longitudinal height of the bottom surface 111 of the cover body gradually decreases from the valve rod to the bottom edge of the cover body 11.

The valve rod gives the valve rod enough activity space through the cambered surface highest place of locating lid bottom surface 111, and furtherly, lid bottom surface 111 wholly is even cambered surface, and central point puts for the cambered surface highest place, central point puts the department promptly for lid bottom surface 111 atress is balanced.

In this embodiment, the water outlet valve 12 is arched upward from the radial edge to the pressure relief hole 126, and the distance between the upper surface of the water outlet valve 12 and the lower surface of the cover bottom 111 from the position of the valve rod 16 to the bottom edge of the cover 11 is different, so that the space on each position of the upper surface of the water outlet valve 12 on the longitudinal section is different, and the cooling effect of the steam is increased.

Further, the distance between the upper surface of the water outlet valve 12 and the lower surface of the bottom surface 111 of the cover body gradually increases from the valve rod to the bottom edge of the cover body 11, so that the space in the steam discharge path gradually increases, the steam cooling effect is obviously improved, the steam pressure gradually decreases, and the probability that the steam is ejected out of the water outlet nozzle 17 due to overlarge steam pressure is reduced.

Further, the longitudinal distance between the pressure regulating cavities 15 increases from the valve rod to the bottom edge of the cover body 11, and the water outlet nozzle 17 is communicated to the position where the longitudinal distance between the pressure regulating cavities 15 is maximum.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "concave", "convex", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Simple substitutions without changing the inventive content of the present invention are considered to be the same. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a pressure regulating sealed thermo jug, includes the kettle body and pot lid, the pot lid includes lid and outlet valve, the outlet valve pass through the valve rod install in the bottom of lid, its characterized in that: the cover body is provided with a cover body bottom surface which is recessed upwards from the bottom edge of the cover body, the cover body is divided into an upper heat insulation cavity and a lower pressure regulating cavity by the cover body bottom surface, and when the water outlet valve is matched and sealed with the bottom edge of the cover body, the upper surface of the water outlet valve and the cover body bottom surface form the pressure regulating cavity;

the kettle cover is provided with a water outlet nozzle communicated with the pressure regulating cavity, the inner cavity of the kettle body is communicated with the water outlet nozzle through the pressure regulating cavity, and the longitudinal distance of the pressure regulating cavity is increased from the valve rod to the bottom edge of the cover body.

2. The pressure-regulating sealed thermo jug according to claim 1, wherein: the water outlet valve is provided with a slow-pressure surface surrounding the valve rod and a pressure release surface surrounding the slow-pressure surface, and the height of the pressure release surface is gradually reduced from the edge of the slow-pressure surface to the bottom edge of the cover body.

3. The pressure-regulating sealed thermo jug according to claim 2, wherein: the pressure releasing surface is an annular circumferential curved surface, and in the longitudinal section of the pressure releasing surface, the curvature radius of the pressure releasing surface is gradually increased from the edge of the slow pressure surface to the bottom edge of the cover body.

4. The pressure-regulating sealed thermo jug according to claim 3, wherein: the pressure release surface forms a curved surface which is arched from the pressure regulating cavity to the inner cavity of the kettle body, and the space of the pressure regulating cavity from the tail end of the pressure relieving surface to the pressure release surface is instantly enlarged.

5. The pressure-regulating sealed thermo jug according to claim 2, wherein: the kettle cover is provided with a water outlet channel communicated with the pressure regulating cavity and the water outlet nozzle, the water outlet channel is provided with a water inlet communicated with the pressure regulating cavity, and the water inlet is positioned above the pressure release surface.

6. The pressure-regulating sealed thermo jug according to claim 5, wherein: and under the longitudinal section of the water outlet channel, the width of the water inlet covers the radial distance of the pressure release surface, and the near end of the water inlet close to the valve rod is positioned above the joint of the pressure release surface and the pressure relief surface.

7. The pressure-regulating sealed thermo jug according to claim 2, wherein: the pressure relief surface is horizontally arranged, and the distance between the pressure regulating cavities above the pressure relief surface is smaller than that above the pressure release surface; or the pressure relief surface is arranged in an upwards arched curved surface, and the distance between the pressure relief surface and the bottom surface of the cover body is increased from small to large.

8. The pressure-regulating sealed thermo jug according to claim 1, wherein: the water outlet valve is provided with a pressure relief hole, the periphery of the pressure relief hole is provided with an installation boss for installing a water outlet spring, and the installation boss is provided with a pressure discharge notch; the bottom surface of the cover body on the opposite side of the water outlet nozzle is provided with exhaust holes, the exhaust holes are communicated with the heat insulation cavity and the pressure regulating cavity, the number of the pressure discharge notches is 2, and the 2 pressure discharge notches are oppositely arranged on the mounting boss and respectively face the water outlet nozzle and the exhaust holes.

9. The pressure-regulating sealed thermo jug according to any one of claims 1 to 8, wherein: the bottom surface of the cover body is an arc surface, the valve rod is arranged at the highest position of the arc surface, and the longitudinal height of the bottom surface of the cover body is gradually reduced from the position of the valve rod to the bottom edge of the cover body;

the water outlet valve is arched upwards from the radial edge to the direction of the valve rod, and the distance between the upper surface of the water outlet valve and the lower surface of the bottom surface of the cover body is unequal from the valve rod to the bottom edge of the cover body.

10. The pressure-regulating sealed thermo jug according to claim 9, wherein: the water outlet nozzle is communicated to the position with the maximum longitudinal distance of the pressure regulating cavity.

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