JP6649965B2 - Steam valve, vessel cover and liquid heating vessel - Google Patents

Description

  The present invention relates to the technical field of liquid heating containers, and more particularly, to a steam valve, a container cover, and a liquid heating container.

  The liquid heating container includes a container cover and a container, and usually, the container cover and the container are hermetically sealed and assembled to prevent the liquid heating container from accidentally falling over, causing the water in the container to spill and burn. . Further, by providing a steam valve on the container cover, the liquid heating container can exhaust gas when boiling hot water.

  However, all of the conventional steam valves block the exhaust port with a sealing weight. Since the sealing weight is provided in the exhaust pipe of the steam valve, when the liquid heating container falls down, the sealing weight moves to the exhaust port and closes the exhaust port, thereby leaking water in the container. Is prevented. However, if the sealing effect of the sealing weight is not good or the sealing is not in time, water may leak from the container cover.

  A main object of the present invention is to provide a steam valve that can improve the effect of preventing leakage of a liquid heating container.

  In order to achieve the above object, the present invention provides an exhaust pipe having one end opened and the other end hermetically sealed, wherein the exhaust pipe is provided with a free-rotation part for rotating the exhaust pipe around its axial direction. An exhaust pipe communicated with the exhaust pipe, and an intake pipe extending laterally from the exhaust pipe, and a weight member connected to the exhaust pipe and extending laterally from the exhaust pipe, The angle α in the circumferential direction of the exhaust pipe between the weight member and the intake pipe is greater than 90 ° and equal to or less than 180 °, and the gravitational torque that causes the weight member to rotate around the free rotating portion is such that the intake pipe has Provide a steam valve that is larger than the gravitational torque rotating around the rotating part.

Preferably, the intake pipe is provided in a flat shape, and the length of the intake pipe is 3 cm to 5 cm.

Preferably, the intake pipe and the exhaust pipe are integrally formed, and the intake pipe extends outward in a radial direction of the exhaust pipe and is disposed on the same rotation plane as the weight member.

  Preferably, the angle α in the circumferential direction of the exhaust pipe between the weight member and the intake pipe is 170 ° or more and 180 ° or less.

  Preferably, a protrusion is formed on a side wall of the exhaust pipe, and the weight member is detachably mounted on the protrusion.

  Preferably, the exhaust pipe is made of a plastic material, the weight member is made of a metal material, and the weight member is fixed to the exhaust pipe by two-shot injection molding.

  Preferably, the weight member is formed in a fan shape, and the exhaust pipe is connected to a center end of the fan member.

Preferably, a water sealing structure is provided on an outer surface of the exhaust pipe, and the water sealing structure is provided on at least a first waterproof annular portion provided on an outer wall of the exhaust pipe and / or an end face of an open end of the exhaust pipe. look including a second waterproof ring section provided, the first waterproof ring portion is a plurality are sequentially arranged and along the axial direction of the exhaust pipe, the second waterproof ring portion is a plurality and the exhaust It is arranged along the radial direction of the pipe.

Preferably, the area of the cross section of the intake pipe Ri S∈ ^{[20mm 2,} 120mm 2] der, the length of the intake pipe _{L 0} ∈ [20mm, 60mm] a, the intake pipe in the flat And a cross section of the intake pipe is elliptical.

  Preferably, a friction-resistant layer is provided at an open end of the exhaust pipe and / or at the free rotation portion.

The present invention further includes a cover body, wherein the includes a top cover and a lower cover positioned above and below the ends of the cover body, and a steam valve, one end to the cover body communicates with the open end of the exhaust pipe, and Provided is a container cover provided with a vapor passage having the other end communicating with the outside, and provided with a rotation mounting portion for attaching the free rotation portion in the container cover.

  Preferably, the cover main body is provided with a storage tank for storing the steam valve, the storage tank is formed in a cylindrical shape having one end sealed and the other end opened, and the end face of the open end of the exhaust pipe is An exhaust hole is provided in contact with the end face of the closed end of the storage tank, and the end face of the sealed end of the storage tank communicates the exhaust pipe with the steam passage.

  Preferably, at least one waterproof tub is provided at an end face of the closed end of the storage tub, and at least one first waterproof annular portion fitted into the waterproof tub is provided at an end face of an open end of the exhaust pipe. Can be

  Preferably, at least one second waterproof annular portion extending toward the inner wall of the storage tank is provided on a side portion of the exhaust pipe.

Preferably, a sealing weight is provided in the exhaust pipe, and the sealing weight moves from the closed end of the exhaust pipe to the open end of the exhaust pipe when the inclination angle of the exhaust pipe is greater than 90 °. by moving, to seal the exhaust hole of the closed end of the retract and tank, said exhaust on the inner wall of the pipe provided the gas guide structure, the gas guide structure and the inner wall of the exhaust pipe and the weight for the sealing A gas guide passage is formed between the ribs, and the gas guide structure includes a plurality of ribs extending along an axial direction of the exhaust pipe and disposed along a circumferential direction of the exhaust pipe. , The gas guide passage is formed, and the sealing weight is formed in a columnar or spherical shape.

Preferably, the free rotating portion is a rotating shaft provided on an end face of a closed end of the exhaust pipe, the rotating mounting portion is a shaft hole provided in the lower cover, and the rotating shaft is inserted into the shaft hole. Thereby, the steam valve is attached to the lower cover so as to rotate , and an elastic material is provided between the lower cover and an end face of a closed end of the exhaust pipe, and the elastic material is provided around the rotation axis. The exhaust pipe is provided with a sleeve extending from a closed end face thereof, and the sleeve is provided around the elastic material.

  Preferably, the cover body further includes a water discharge valve, a second storage tank for storing the water discharge valve, and a water discharge passage for communicating the water discharge valve with the outside, and the steam passage and the water discharge passage. Communicate.

  Preferably, the free rotation portion is a shaft hole provided at a sealed end of the exhaust pipe, and the rotation mounting portion is a rotation shaft provided in the lower cover and fitted into the shaft hole, or the free rotation portion The portion is a bearing provided at an open end of the exhaust pipe, and the rotary mounting portion is a bearing hole provided in the cover body for mounting the bearing.

  Preferably, the sum of the volumes of the sealed spaces formed between the water-tight structure and the inner wall of the storage tank is V0, and the total volume between the exhaust pipe and the inner wall of the storage tank is V1. , V0 / V1∈ [0.5, 0.95].

  Preferably, at least one waterproof tub is provided on an end face of the closed end of the storage tub, and the second waterproof annular portion is fitted into the waterproof tub.

Preferably, the length of the intake pipe is _{L 0,} the radius of the lower cover is _R, L 0 /R∈[0.6,0.9] der is, resistance to the rotation mounting portion A friction layer is provided.

  Preferably, the gravitational torque that the weight member rotates around the free rotation portion is a gravitational torque that rotates the intake pipe around the free rotation portion, and a friction torque with the cover body when the exhaust pipe rotates. Greater than the sum of

Preferably, the mass _{m 1} of said weight member is Ri der or more and 50g less 10 g, the mass _{m 2} of the intake pipe above 5g, is 20g or less.

Preferably weight of the weight member is _{G 1,} the weight of the intake pipe is _{G 2,} a _{G 1 / G 2 ∈ [0.5,12} ] or [1,10].

Preferably, the distance between the axis of the center of gravity and the exhaust pipe of the weight member is L _1, the distance between the axis of the exhaust pipe and the center of gravity of the intake pipe is L _2, L ₁ / L ₂ ∈ [ _2, 20] or [4, 15].

Preferably, the cover body includes an upper cover, a lower cover, and a frame, wherein the frame is located between the upper cover and the lower cover, and a storage tank that stores the steam valve is provided, Is formed in a cylindrical shape having one end closed and the other end opened, the end face of the open end of the exhaust pipe abutting on the end face of the closed end of the storage tank, and the end face of the closed end of the storage tank is provided with the exhaust gas. An exhaust hole for communicating the pipe with the steam passage is provided , and an elastic material is provided between the lower cover and an end face of a closed end of the exhaust pipe, wherein the elastic material is a spring, and an inner diameter of the spring. Is D∈ [10 mm, 20 mm], the total number of coils is n∈ [4, 12], the spring constant is k∈ [10 g / mm, 40 g / mm], and the mass is m ₃ ∈ [0.3 g , 1.5g] Ri, wherein the exhaust pipe sleeve is provided which extends from the end surface of the closed end, the sleeve is provided around the elastic member.

  Preferably, the frame further includes a water discharge valve, a second storage tank for storing the water discharge valve, and a water discharge passage for communicating the water discharge valve with the outside, and the steam path and the water discharge path are provided. Communicate.

The present invention further provides a liquid heating container including a container body and the container cover according to claim 11 , wherein the container cover covers the container body and is hermetically connected to an inner wall of the container body.

  Preferably, a sealing ring is provided between the lower cover and the cover body, and the container cover is hermetically connected to an inner wall of the container body by the sealing ring.

  Preferably, the container cover and the container body are connected by a locking structure, and the locking structure includes an extendable hook provided on the container cover and a lock tank provided on an inner wall of the container body.

  The technical solution of the present invention is to provide a weight member and a free rotating portion in the exhaust pipe, so that the steam valve can be freely rotated by the driving action of the weight member, and when the water leakage prevention type liquid heating container falls down, the weight member At the same time, the suction pipe moves upward, and the position of the suction pipe rises, reducing the probability that water in the liquid heating vessel enters the exhaust port and improving the effect of preventing liquid leakage in the liquid heating vessel. Let it.

In order to describe the embodiments of the present invention or the technical solutions of the related art in more detail, the drawings necessary for the description of the embodiments of the present invention or the related art will be briefly described below. The drawings described below are only some examples of the present invention, and it goes without saying that other drawings can be obtained based on the structures shown in these drawings without creativity for those skilled in the art.
FIG. 1 is a schematic structural view of an embodiment of the liquid heating container of the present invention. FIG. 2 is a cross-sectional view of the container cover of FIG. FIG. 3 is a schematic structural view of the inside of the container cover of FIG. 1, in which a lower cover of the container cover is removed. FIG. 4a is a schematic structural view showing one embodiment of the steam valve of the present invention in FIG. FIG. 4b is a schematic structural view showing another embodiment of the steam valve of the present invention in FIG. FIG. 5a is a schematic structural view of another angle of FIG. 4a. FIG. 5b is a schematic structural view of another angle of FIG. 4b. FIG. 6a is a sectional view showing the steam valve of FIG. 4a. FIG. 6b is a sectional view showing the steam valve of FIG. 4b. FIG. 7 is a sectional view showing that the steam valve of the present invention is attached to a container cover of another embodiment. FIG. 8A is a cross-sectional view showing the positional structure of water and the container cover after the container cover of FIG. 1 has fallen by 180 °, and the steam valve in this drawing is the steam valve in FIG. 4A. FIG. 8b is a cross-sectional view showing the positional structure of water and the container cover after the container cover of FIG. 1 has fallen by 180 °.

  Achievements, functional features and advantages of the present invention will be described in detail with reference to embodiments of the present invention and the drawings.

  Hereinafter, the technical solutions according to the embodiments of the present invention will be described in detail with reference to the drawings of the embodiments of the present invention, but the following embodiments are only some of the embodiments of the present invention, and Does not show the embodiment of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creativity are also included in the protection scope of the present invention.

  It should be noted that direction instructions (e.g., up, down, left, right, front, back ...) are described in the embodiment of the present invention, but the direction instruction is a specific one. It merely describes the relative positional relationship between each member in the posture (for example, the posture in the drawing), the moving state, and the like. When the specific posture changes, the direction indication changes accordingly.

  Further, in the embodiments of the present invention, terms such as "first" and "second" are described, but the terms such as "first" and "second" are used to describe the present invention. It does not indicate, directly or indirectly, the significance of the technical features or the quantity of the technical features, directly or indirectly. Thus, features limited to "first" and "second" indicate directly or indirectly that at least one technical feature is included. It should be noted that the technical solutions in each embodiment may be combined, but it is necessary to assume that those skilled in the art can realize the combination. If a contradiction occurs due to the combination of the technical solutions or the implementation is impossible, these are combined. It cannot be overemphasized that the present invention is not included in the protection scope required by the present invention.

  The present invention provides a vapor valve, a container cover to which the vapor valve is attached, and a liquid heating container provided with the container cover.

  1 to 3, the liquid heating container 10 includes a container cover 10a, a container body 10b, and a power supply base 10c. The container cover 10a includes a cover body 10 'and an upper portion provided at an upper end of the cover body 10'. It includes a cover 11 and a lower cover 12 provided at a lower end of the cover body 10 '. In order to simplify the description, a description will be given below with reference to a kettle as an example of the liquid heating container.

  The cover body 10 ′ includes a frame 13, and a storage tank 130 to which the steam valve 15 is attached is formed on the frame 13. The storage tank 130 is formed in a cylindrical shape, and one end is an open end and the other end is a closed end. An exhaust hole 131 communicating with the steam valve 15 is formed at the closed end of the storage tank 130.

  A push button 16 is provided on the container cover 10a, and a link rod 17, a water discharge valve 18, and a second storage tank 100 for storing the water discharge valve 18 are formed on the cover body 10 '. The push button 16 is connected to one end of a link rod 17 and the other end of the link rod 17 is used to open a water discharge valve 18 (closing of the water discharge valve 18 is performed by a spring and a push plate attached to its upper end). .

  A steam passage 14 and a water discharge passage are formed in the cover main body 10 '. The exhaust hole 131 and the steam passage 14 communicate with each other, and one end of the steam passage 14 communicates with the outside to maintain the pressure in the container body. One end of the water discharge passage is a water outlet, and the other end communicates with the second storage tank 100. When the water discharge valve 18 is opened, the water in the container body 10b flows into the second storage tank 100, and is discharged from the water discharge port by the water discharge valve 18.

  When boiling water in the water leakage prevention kettle 10, water in the container body 10 b evaporates, steam enters the steam valve 15 through a through hole formed in the lower cover 12, and then enters the steam passage 14 through the exhaust hole 131. And finally the vapor flows from the vapor passage 14 along the handle of the liquid heating vessel to the temperature control device at the bottom of the liquid heating vessel 10. The steam is discharged from one end of the steam passage 14 communicating with the outside.

  When the user pours water, by pushing an operation component (not shown) provided on the container body 10b, the operation component comes into contact with the push button 16, and the water discharge valve 18 is opened by the link rod 17, so that The water in the container body 10b flows into the second storage tank 100 and is discharged from the water outlet 141.

In the embodiment of the present invention, specific embodiments of the steam valve 15, the container cover 10a, and the liquid heating container will be described from four directions.

  On the first side, as shown in FIGS. 4A to 6B, the steam valve 15 includes an exhaust pipe 151, a weight member 152, and an intake pipe 153. One end of the exhaust pipe 151 is open, and the other end is hermetically closed. The exhaust pipe 151 is provided with a free rotation unit that rotates the exhaust pipe 151 in the axial direction.

  The intake pipe 153 is connected to the exhaust pipe 151 so as to communicate with the exhaust pipe 151, and extends laterally from the exhaust pipe 151. The weight member 152 is connected to the exhaust pipe 151 and extends laterally from the exhaust pipe 151. The angle α between the weight member 152 and the intake pipe 153 in the circumferential direction of the exhaust pipe 151 is greater than 90 ° and equal to or less than 180 °. The gravitational torque by which the weight member 152 rotates around the free rotation portion is greater than the gravitational torque by which the intake pipe 153 rotates around the free rotation portion.

  Specifically, the exhaust pipe 151 includes a tube and an end plate, and the upper end of the tube is an opening, and the lower end is sealed by the end plate. The weight member 152 is attached to a side wall of the exhaust pipe 151 or is attached to a lower end of the exhaust pipe 151. Similarly, the intake pipe 153 is attached to a side wall of the exhaust pipe 151 or is attached to a lower end of the exhaust pipe 151. It is preferable that both the intake pipe 153 and the weight member 152 be attached to the side wall of the exhaust pipe 151 in order to improve the convenience of attachment. Hereinafter, an example in which both the intake pipe 153 and the weight member 152 are attached to the side wall of the exhaust pipe 151 will be described.

  An exhaust port 1510 is formed on the side wall of the tube, and an intake pipe 153 is attached to the exhaust port 1510. The intake pipe 153 communicates with the pipe through the exhaust port 1510.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixed to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 is detachably connected to the exhaust pipe 151, and the weight member 152 can be attached to the exhaust pipe 151 by, for example, a screw. The weight member 152 and the intake pipe 153 are provided so as to form an included angle in the circumferential direction of the exhaust pipe 151. In addition, the weight of the weight member 152 is large, and is usually made of a metal material, for example, a high-density material such as stainless steel or copper. The exhaust pipe 151 and the intake pipe 153 may be made of a plastic material or a metal material.

The free rotation part is attached to a rotation mounting part in the container cover 10a. The free rotating part belongs to a part of the tubular body, for example, the upper end, the center or the lower end of the tubular body, and the rotating mounting part is an annular part, and the tubular body is installed in the annular part. The free rotating part may be a shaft hole formed in the closed end of the exhaust pipe 151, and the rotating mounting part may be a rotating shaft formed in the lower cover 12 and fitted into the shaft hole. The free rotating part is a bearing provided on the side wall of the exhaust pipe 151, and the rotating mounting part can be a bearing hole formed in the storage tank 130, and the bearing is fixed in the bearing hole. Free rotation unit is a rotating shaft 157 provided on the lower end surface of the exhaust pipe 151, and the rotary shaft 157 and the exhaust pipe 151 is provided coaxially, the rotational mounting portion is a shaft hole formed in the lower cover 12 You can also.

  When the liquid heating container 10 falls down, the container cover 10a rotates 90 ° with respect to the normal state. Since the gravitational torque of the weight member 152 is larger than the gravitational torque of the intake pipe 153, the free rotating portion rotates with respect to the rotary mounting portion by the action of the weight member 152, and finally the weight member 152 moves to the lowest level of the liquid surface. However, the position of the suction pipe 153 increases, and water in the liquid heating container 10 cannot easily enter the suction pipe 153.

Here, the gravitational torque of the weight member 152 is M ₁ = G ₁ × L ₁ , and the gravitational torque of the intake pipe 153 is M ₂ = G ₂ × L ₂ . Incidentally, _{G 1} is the weight of the weight member 152, _{L 1} is the vertical distance between the axis of the center of gravity and the exhaust pipe 151 of the weight member 152, _{G 2} is the weight of the intake pipe 153, _{L 2} is a suction pipe The vertical distance between the center of gravity of the exhaust pipe 151 and the axis of the exhaust pipe 151. Here, if M ₁ > M ₂ is satisfied, when the liquid heating container falls down (turns over by 90 °), the steam valve 15 rotates, the weight member 152 rotates downward, and the position of the intake pipe 153 increases. be able to.

  The angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is 90 ° <α ≦ 180 °. This is because if 0 ° <α ≦ 90 °, when the kettle 10 falls down, the water level in the kettle 10 becomes higher than the steam valve 15, so that water flows into the exhaust pipe 151 along the intake pipe 153. It is. If 90 ° <α ≦ 180 °, even if the kettle 10 falls, the water in the kettle 10 cannot completely submerge the intake pipe 153, and the end of the intake pipe 153 extends above the water level. Water cannot flow into the exhaust pipe 151 by the intake pipe 153, and the effect of preventing water leakage can be improved.

  According to the technical solution of the present invention, the steam valve 15 can be freely rotated by the action of the weight member 152 by providing the exhaust pipe 151 with the weight member 152 and the free rotating portion. When the water leakage prevention type liquid heating container 10 falls down, the weight member 152 rotates downward and the suction pipe 153 is moved upward, so that the position of the suction pipe 153 is raised, and the water in the liquid heating container 10 is discharged to the exhaust port. The probability of entering the liquid heating container 1510 is suppressed, and the effect of preventing the liquid heating container 10 from leaking water can be improved.

  Referring to FIGS. 3, 4a, 5a and 6a, in the above embodiment, the range of the angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is wide, and 90 ° <α ≦ 180 °. It is. Here, if α is small, when the liquid heating container 10 falls down, the water level in the liquid heating container 10 becomes higher than the end of the intake pipe 153, and water may flow into the exhaust pipe 151 from the end of the intake pipe 153. As a result, the effect of preventing the water leakage of the water discharge valve 18 of the above embodiment is deteriorated. In a preferred embodiment of the present invention, the angle α between the extending direction of the weight member 152 and the extending direction of the intake pipe 153 is set to 170 ° ≦ α ≦ 180 in order to improve the effect of preventing water leakage of the water discharge valve 18. ° can be. In this case, even if the liquid heating container 10 falls down, the water level in the liquid heating container 10 cannot completely submerge the end of the intake pipe 153, and water flows into the exhaust pipe 151 by the intake pipe 153. Since it is not possible, the effect of preventing water leakage can be further improved.

  Based on the above-described embodiment, α can be set to 180 ° in order to optimize the effect of preventing the steam valve 15 from leaking water. That is, the weight member 152 and the intake pipe 153 can be provided on both sides of the exhaust pipe 151, respectively.

At the moment the kettle 10 falls, the water in the container body 10b quickly flows into the container cover 10a, and flows into the exhaust pipe 151 by the intake pipe 153. If the rotation speed of the steam valve 15 is too slow, water flows into the intake pipe 153 before the intake pipe 153 rotates to the highest position (a large amount of water flows into the intake pipe 153 even by a difference of 0.1 second). fear is), there is a risk of leakage from the container cover 10 a.

  Referring to FIGS. 3, 4a, and 5a, in the above-described embodiment, the intake pipe 153 may be a circular pipe, a square pipe, or another shaped pipe. Since the pipe having such a shape has a large area in contact with air in the rotational direction, the resistance of the air increases. In this embodiment, the intake pipe 153 is formed in a flat shape. Thus, when the kettle 10 falls down, the intake pipe 153 can quickly rotate to the highest position, and water can be prevented from flowing into the intake pipe 153.

  The length of the intake pipe 153 must be limited in consideration of the fact that the radius of the container cover 10a is usually 5 cm to 8 cm. If the intake pipe 153 is too long, the intake pipe 153 will easily interfere with other structures, and the entire steam valve 15 will not easily rotate. If the suction pipe 153 is too short, the end of the suction pipe 153 may be submerged when the liquid heating container 10 falls down. In this embodiment, it is preferable that the length of the intake pipe 153 is 3 cm to 5 cm.

  Considering the tightness of the connection between the intake pipe 153 and the exhaust pipe 151, the intake pipe 153 and the exhaust pipe 151 can be integrally molded, thereby improving the tightness of the connection between the two members. And it is difficult to leak or leak water.

  Both the intake pipe 153 and the weight member 152 can be installed at any position on the side wall of the exhaust pipe 151, and both can have a vertical difference or be located on the same plane of rotation. . In an embodiment, both are preferably located on the same plane of rotation. Hereinafter, an example in which both are located on different rotation planes, the weight member 152 is provided above, and the intake pipe 153 is provided below will be described. When the weight member 152 rotates, the exhaust pipe 151 transmits the gravitational torque of the weight member 152 to the intake pipe 153. In this process, since the exhaust pipe 151 generates a resistance to the rotation of the weight member 152, the rotation of the intake pipe 153 to the optimum position is delayed. When both are located on the same rotation plane, the resistance generated by the exhaust pipe 151 is small, so that the intake pipe 153 can quickly rotate to the highest position.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 can further be detachably connected to the exhaust pipe 151. The exhaust pipe 151 is made of a plastic material, and the weight member 152 is made of a metal material. The weight member 152 is fixed to the exhaust pipe 151 by two-shot injection molding. In a preferred embodiment, the connection between the weight member 152 and the exhaust pipe 151 is a detachable connection to facilitate attachment, detachment or replacement of the weight member 152. Specifically, a protrusion 1512 is formed on the side wall of the exhaust pipe 151, and the weight member (152) is attached to the protrusion 1512. A convex portion 1512 is formed on the side wall of the exhaust pipe 151, and the convex portion 1512 and the weight member 152 are connected to each other to have a protective effect on the exhaust pipe 151. If the weight member 152 is directly attached to the side wall of the exhaust pipe 151, the attachment of the weight member 152 may cause the exhaust pipe 151 to leak or deform.

  3, 4 a, and 5 a, in another preferred embodiment, the weight member 152 is formed in a fan shape, and a center end of the weight member 152 is connected to the exhaust pipe 151. This is because the fan-shaped weight member 152 is easy to process and the cost is low. In addition, the fan-shaped weight member 152 has a low resistance during rotation, has a high rotation speed, and can quickly raise the intake pipe 153.

Referring to FIGS. 2 and 8a, there are two situations in which kettle 10 falls. The first is when the kettle 10 falls down by 90 °, and the second is when the tilt angle of the kettle 10 is larger than 90 °, for example, 180 °. When falling down by 90 °, the pressure of the water flow around the exhaust pipe 151 is small, and it is difficult for water to enter the steam passage 14 in a short time. However, when the kettle 10 is tilted by 180 °, the pressure around the exhaust pipe 151 increases, so that water reaches the end face of the open end of the exhaust pipe 151 in a short time, and enters the steam passage 14 through the exhaust hole 131. It may flow in and water leakage may occur. In a preferred embodiment, at least one waterproof tub 1310 is formed on the end face of the closed end of the storage tub 130 to avoid the above situation. At least one first waterproof annular portion 154 that fits into the waterproof tank 1310 is formed on an end surface of the open end of the exhaust pipe 151. By inserting the first waterproof annular portion 154 into the waterproof tub 1310 in this way, it is possible to effectively prevent water from flowing into the steam passage 14 and improve the effect of preventing the steam valve 15 from leaking water. be able to.

Referring to FIG. 7, when the kettle 10 falls down, water reaches the outer wall of the exhaust pipe 151, flows into the steam passage 14, and may cause water leakage. In the embodiment, at least one second waterproof annular portion 155 extending to the inner wall of the storage tank 130 is formed on a side of the exhaust pipe 151 to prevent water from reaching the outer wall of the exhaust pipe 151. . Here, since the exhaust pipe 151 can rotate, no interference occurs between the exhaust pipe 151 and the inner wall of the storage tank 130. Therefore, a gap is left between the exhaust pipe 151 and the storage tank 130, and water can flow into the steam passage 14 through the gap. Therefore, when the second waterproof annular portion 155 is provided, the second waterproof annular portion 155 generates a resistance to the water flow, and the speed at which the water flows into the steam passage 14 can be reduced. Time can be secured. To further reduce the rate at which water flows into the steam passage 14, two, three, or more than two second waterproof annular portions 155 may be formed.

As described in the above embodiment, when the kettle 10 falls down by 180 °, the pressure around the exhaust pipe 151 is large, so that the water flows into the steam passage 14 within a short time, and water leakage occurs. In another preferred embodiment, since the water is or water to reduce the rate of flow into the steam passage 14 to prevent flow into the steam passage 14, the sealing weight 156 in said exhaust pipe 151 Provide. When the inclination angle of the exhaust pipe 151 is greater than 90 °, the sealing weight 156 moves from the closed end of the exhaust pipe 151 to the open end of the exhaust pipe 151 to thereby close the closed end of the storage tank 130. Of the exhaust hole 131 is sealed.

Referring to FIG. 6A, if the weight 156 for sealing does not block the exhaust pipe 151 based on the above-described embodiment, the exhaust of the exhaust pipe 151 may be delayed. Therefore, in this embodiment, a gas guide structure is formed on the inner wall of the exhaust pipe 151, and a gas guide passage is formed between the sealing weight 156 and the inner wall of the exhaust pipe 151 by the gas guide structure. Is done. Here, the gas guide structure may be a protrusion formed on the inner wall of the exhaust pipe 151, for example, a circular protrusion or a rib 1511, or a gas guide tank formed on the inner wall of the exhaust pipe 151 . Here, it is preferable that the gas guiding structure is a plurality of ribs 1511 that are arranged in the circumferential direction of the axially stretched and the exhaust pipe 151 of the exhaust pipe 151. The gas guide passage is formed between the adjacent ribs 1511.

  In the above embodiment, the sealing weight 156 may be formed in various shapes, and may be any shape as long as the exhaust hole 131 can be closed when the kettle 10 falls. For example, when the sealing weight 156 is formed in a columnar or spherical shape, the resistance of the sealing weight 156 to move in the exhaust pipe 151 is reduced, and the sealing weight 156 can move smoothly.

  In another preferred embodiment, an elastic member 159 is attached between the lower cover 12 and the end face of the closed end of the exhaust pipe 151 to improve the sealing performance around the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131. . The elastic member 159 is provided around the rotation shaft 157 on the lower end surface of the exhaust pipe 151. Accordingly, when the kettle 10 falls down, the elastic member 159 quickly raises the exhaust pipe 151, thereby sealing the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131, thereby preventing the steam valve 15 from leaking water. Can be improved. Here, the elastic member 159 may be a spring, a rubber spacer, or an elastic piece, but the elastic member 159 is preferably a spring.

  Referring to FIG. 6A, in the above-described embodiment, it is considered that the elastic function of the elastic member 159 is reduced or eliminated due to the long compression of the elastic member 159. In this embodiment, a sleeve 158 is attached to the exhaust pipe 151 so as to extend from the end face of the closed end, and the sleeve 158 is provided around the elastic member 159. Thus, even if the pressure applied to the elastic member 159 is too large, the elastic member 159 is less likely to be permanently deformed by the support of the sleeve 158.

The improvement of the steam valve 15 and the container cover 10a has been described above. Hereinafter, the connection between the container cover 10a and the container body 10b will be described in detail.

  Referring to FIGS. 2 and 3, the container cover 10a is attached to the container body 10b. The upper end of the container body 10b is an opening, and the open end of the container body 10b is closed by the container cover 10a. In a preferred embodiment, a sealing ring 19 is attached between the lower cover 12 and the container body 10b, and the container cover 10a is hermetically connected to the inner wall of the container body 10b by the sealing ring 19. In addition, in order to secure the strength of connection between the container cover 10a and the container body 10b, the container cover 10a and the container body 10b are connected by a locking structure. The locking structure includes a telescopic hook provided on the container cover 10a and a lock tank provided on the inner wall of the container body 10b. When the container cover 10a is attached to the container body 10b, the hook is deformed by receiving pressure. When the hook enters the lock tub, the hook is restored to its original shape and is coupled to the lock tub, thereby fixing the container cover 10a to the container body 10b.

  In the second direction, in the above-described embodiment, the frictional force applied when the exhaust pipe 151 rotates is not considered. Therefore, an embodiment of the frictional force applied to the exhaust pipe 151 when the steam valve 15 rotates will be described below.

  The steam valve 15 includes an exhaust pipe 151, a weight member 152, and an intake pipe 153. Here, one end of the exhaust pipe 151 is open and the other end is hermetically closed, and the exhaust pipe 151 is provided with a free rotating portion that rotates the exhaust pipe 151 in the axial direction.

  The intake pipe 153 is connected to the exhaust pipe 151 so as to communicate with the exhaust pipe 151, and extends laterally from the exhaust pipe 151. The weight member 152 is connected to the exhaust pipe 151 and extends laterally from the exhaust pipe 151. The angle α between the weight member 152 and the intake pipe 153 in the circumferential direction of the exhaust pipe 151 is greater than 90 ° and equal to or less than 180 °. Here, the gravitational torque by which the weight member 152 rotates around the free rotation portion is larger than the sum of the gravitational torque by which the intake pipe 153 rotates around the free rotation portion and the friction torque when the exhaust pipe 151 rotates by itself.

  Specifically, the exhaust pipe 151 includes a tube and an end plate, and the upper end of the tube is open, and the lower end is sealed by the end plate. The weight member 152 is attached to a side wall of the exhaust pipe 151 or is attached to a lower end of the exhaust pipe 151. Similarly, the intake pipe 153 is attached to a side wall of the exhaust pipe 151 or is attached to a lower end of the exhaust pipe 151. It is preferable that both the intake pipe 153 and the weight member 152 be attached to the side wall of the exhaust pipe 151 for convenience of attachment. Hereinafter, an example in which both the intake pipe 153 and the weight member 152 are attached to the side wall of the exhaust pipe 151 will be described.

  An exhaust port 1510 is provided on the side wall of the tube, and an intake pipe 153 is attached to the exhaust port 1510. The intake pipe 153 communicates with the pipe through the exhaust port 1510.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 is detachably connected to the exhaust pipe 151, and the weight member 152 can be connected to the exhaust pipe 151 by, for example, a screw. The weight member 152 and the intake pipe 153 form an included angle in the circumferential direction of the exhaust pipe 151. In addition, the weight of the weight member 152 is large, and a metal material, for example, a high-density material such as stainless steel or copper is generally used. The exhaust pipe 151 and the intake pipe 153 are made of a plastic material or a metal material. However, it is preferable to use a stainless steel material, for example, SU304, in consideration of food hygiene, high temperature resistance, steam resistance, space saving, and the like.

  The free rotation part is attached to a rotation mounting part in the container cover 10a. The free rotating part belongs to a part of the tubular body, for example, the upper end, the center or the lower end of the tubular body, the rotating mounting part is an annular part, and the tubular body is installed in the annular part. The free rotating part may be a first rotating shaft 157 formed on a lower end surface of the exhaust pipe 151. The first rotation shaft 157 and the exhaust pipe 151 are provided coaxially, and the rotation mounting portion is a first shaft hole provided in the lower cover 12. The free rotating portion may be a second shaft hole (a blind hole) formed in the closed end of the exhaust pipe 151, and the rotating mounting portion may be a second rotating shaft formed in the lower cover 12 and fitted into the shaft hole. it can. The free rotating portion may be a bearing provided on a side wall of the exhaust pipe 151, and the rotating mounting portion is a bearing hole formed in the storage tank 130, and the bearing is fixed in the bearing hole.

  When the liquid heating container 10 falls down, the container cover 10a rotates 90 ° with respect to a normal state. Since the gravitational torque of the weight member 152 is greater than the gravitational torque of the intake pipe 153, the free rotating portion rotates with respect to the rotary mounting portion by the action of the weight member 152, and finally the weight member 152 is moved to the lowermost position of the liquid level. As the position of the suction pipe 153 increases, water in the liquid heating container 10 cannot easily enter the suction pipe 153.

Here, the gravitational torque of the weight member 152 is M ₁ = G ₁ × L ₁ , the gravitational torque of the intake pipe 153 is M ₂ = G ₂ × L ₂ , and the friction torque when the exhaust pipe 151 rotates by itself is M ₃ = f × d ₁ . Incidentally, _{G 1} is the weight of the weight member 152, _{L 1} is the vertical distance between the axis of the center of gravity and the exhaust pipe 151 of the weight member 152, _{G 2} is the weight of the intake pipe 153, _{L 2} is an intake F is the vertical distance between the center of gravity of the pipe 153 and the axis of the exhaust pipe 151, and f is the frictional force received when the exhaust pipe 151 rotates (for example, the frictional force between the exhaust pipe 151 and the inner wall of the storage tank 130 or are free frictional force between the rotating portion and the rotating mounting portion), d ₁ is the radius of the exhaust pipe 151. Here, if M ₁ > M ₂ + M ₃ is satisfied, when the liquid heating container falls down (turns over by 90 °), the steam valve 15 rotates, the weight member 152 rotates downward, and the exhaust pipe 151 is lifted. .

  The angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is 90 ° <α ≦ 180 °. This is because if 0 ° <α ≦ 90 °, when the kettle 10 falls down, the water level in the kettle 10 becomes higher than the steam valve 15, and water flows into the exhaust pipe 151 along the intake pipe 153. Because. Therefore, if 90 ° <α ≦ 180 °, even if the kettle 10 falls, the water in the kettle 10 cannot completely submerge the intake pipe 153, and the end of the intake pipe 153 can extend above the water level. Therefore, water is less likely to flow into the exhaust pipe 151 by the intake pipe 153, and the effect of preventing water leakage can be improved.

Since the volume of the container cover 10 is limited, the weight of the weight member 152 must not be too heavy. If the weight of the weight member 152 is too heavy, the volume occupying the inside of the container cover 10a will increase, and other structures It is easy to interfere. The weight of the weight member 152 must not be too light, and if the weight of the weight member 152 is too light, when the kettle 10 falls down, the rotation of the steam valve 15 becomes slow, and the effect of preventing water leakage deteriorates. Therefore, in view of the above situation, in the present embodiment, the mass _{m 1} of the weight member 152 is 10g or more, and 50g or less. Thereby, the occupancy of the space of the weight member 152 can be reduced, and at the same time, the reaction speed of the rotation of the steam valve 15 can be increased. Also, the mass m ₂ of the intake pipe 153 needs to be 5 g or more and 20 g or less.

When the kettle 10 falls down, in order to ensure the normal rotation of the steam valve 15, the weight of the weight member 152 is G ₁ , the weight of the intake pipe 153 is G _2, and G ₁ / G ₂ ∈ [0.5, 12] To Further, considering that the diameter of the container cover is small, usually 10 cm to 15 cm, if the ratio between G ₁ and G ₂ is small, it is necessary to increase the distance between the center of gravity of the weight member 152 and the axis of the exhaust pipe 151. Thus, M ₁ > M ₂ + M ₃ is satisfied, and the steam valve 15 can rotate normally. In a preferred embodiment, G ₁ / G ₂ ∈ [1, 10].

The distance L ₁ between the center of gravity of the weight member 152 with the axis of the exhaust pipe 151, and the distance L ₂ between the axis of the center of gravity and the exhaust pipe 151 of the intake pipe 153, a large influence on the rotation effect of the steam valve 15 give. Usually, for a smooth rotation of the steam valve 15, to increase the _{L 1} from _{L 2.} However, since it is necessary to consider that the exhaust pipe 151 receives frictional resistance, the position of the intake pipe 153 is adjusted so that the steam valve 15 can rotate quickly after the kettle 10 falls down. L ₁ / L ₂ ∈ [ _2, 20]. Furthermore, considering the size of the interior of the container cover _10a, it is preferable that the range of L 1 / _{L 2} in the 4, 15].

  In the above embodiment, the range of the angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is wide, and 90 ° <α ≦ 180 °. Here, if the range of α is small, when the liquid heating container 10 falls down, the water level in the liquid heating container 10 becomes higher than the end of the intake pipe 153, and water flows into the exhaust pipe 151 from the end of the intake pipe 153. There is a possibility that the effect of preventing the water leakage of the water discharge valve 18 of the above embodiment becomes worse. Referring to FIGS. 3, 4a and 6a, in a preferred embodiment, the angle α between the extending direction of the weight member 152 and the extending direction of the intake pipe 153 is improved in order to improve the effect of preventing the water discharge valve 18 from leaking water. Is set to 170 ° ≦ α ≦ 180 °. As a result, even if the liquid heating container 10 falls down, the water in the liquid heating container 10 cannot submerge the end of the intake pipe 153, and the water cannot flow from the intake pipe 153 into the exhaust pipe 151. Thus, the effect of preventing water leakage can be further improved.

  In the above-described embodiment, α is set to 180 ° in order to optimize the effect of preventing the steam valve 15 from leaking water. That is, the weight member 152 and the intake pipe 153 are provided on opposite sides of the exhaust pipe 151, respectively.

At the moment the kettle 10 falls, the water in the container body 10b quickly flows into the container cover 10a, and flows into the exhaust pipe 151 by the intake pipe 153. If the rotation speed of the steam valve 15 is too slow, when the intake pipe 153 rotates to the highest position, water flows into the intake pipe 153 (a large amount of water may flow into the intake pipe 153 even with a difference of 0.1 second). There is a possibility that water leaks from the container cover 10.

  Referring to FIGS. 3 and 4a, in the above embodiment, the intake pipe 153 may be a circular pipe, a square pipe, or another shape of pipe. A pipe having such a shape has a large area that comes into contact with air in the rotation direction, and increases air resistance. In this embodiment, the intake pipe 153 is provided in a flat shape. Thus, when the kettle 10 falls down, the intake pipe 153 can quickly rotate to the highest position, and water can be prevented from flowing into the intake pipe 153.

  Also, considering that the radius of the container cover 10a is usually 5 cm to 8 cm, the length of the intake pipe 153 must also be limited. If the intake pipe 153 is too long, the intake pipe 153 tends to interfere with other structures, and the entire exhaust valve 15 cannot rotate smoothly. If the suction pipe 153 is too short, the tip of the suction pipe 153 may be submerged if the liquid heating container 10 falls down. In this embodiment, it is preferable that the length of the intake pipe 153 be 3 cm to 5 cm.

  The intake pipe 153 and the exhaust pipe 151 may be integrally formed in consideration of the tightness of the connection between the intake pipe 153 and the exhaust pipe 151. Thereby, the hermeticity of the connection part between both is improved, and air leak or water leak becomes difficult.

  Both the intake pipe 153 and the weight member 152 are attached to arbitrary positions on the side wall of the exhaust pipe 151. Both may have an elevation difference in the vertical direction or may be located on the same plane of rotation. In the embodiment, it is preferable that both are located on the same rotation plane. Hereinafter, an example in which the weight member 152 is provided above and the intake pipe 153 is provided below when both are located on different rotation planes will be described. When the weight member 152 rotates, the exhaust pipe 151 must transmit the gravitational torque of the weight member 152 to the intake pipe 153. In this process, the exhaust pipe 151 generates a resistance to the rotation of the weight member 152. Therefore, the rotation of the intake pipe 153 to the optimum position becomes slow. When both are located on the same rotation plane, the resistance generated by the exhaust pipe 151 is small, and the intake pipe 153 can quickly rotate to the highest position.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 can be detachably connected to the exhaust pipe 151. The exhaust pipe 151 is made of a plastic material, and the weight member 152 is made of a metal material. The weight member 152 is fixed to the exhaust pipe 151 by two-shot injection molding. In a preferred embodiment, the connection between the weight member 152 and the exhaust pipe 151 is preferably a detachable connection in order to facilitate attachment, detachment or replacement of the weight member 152. Specifically, a protrusion 1512 is provided on a side wall of the exhaust pipe 151, and a weight member (152) is attached to the protrusion 1512. A protrusion 1512 is provided on a side wall of the exhaust pipe 151, and has a protective action on the exhaust pipe 151 by connecting the protrusion 1512 and the weight member 152. When the weight member 152 is directly attached to the side wall of the exhaust pipe 151, the exhaust pipe 151 may leak or deform due to the connection of the weight member 152.

  With continued reference to FIGS. 3 and 4a, in another preferred embodiment, the weight member 152 is formed in a fan shape, and the center end of the weight member 152 is connected to the exhaust pipe 151. This is because the fan-shaped weight member 152 can be easily processed, and the cost can be reduced. In addition, when the weight member 152 provided in a fan shape rotates, the resistance is small, the rotation speed is high, and the intake pipe 153 can be quickly lifted.

Referring to FIGS. 2 and 8a, there are two situations in which kettle 10 falls. The first is when the kettle 10 falls down by 90 °, and the second is when the tilt angle of the kettle 10 is larger than 90 °, for example, 180 °. When falling down by 90 °, the pressure of the water flow around the exhaust pipe 151 is small, and it is difficult for water to enter the steam passage 14 in a short time. However, when the kettle 10 falls down by 180 °, the pressure around the exhaust pipe 151 is large, and the water flows to the end face of the open end of the exhaust pipe 151 in a short time, flows into the steam passage 14 from the exhaust hole 131, Water leakage may occur. In a preferred embodiment, in order to avoid the above situation, at least one waterproof tub 1310 is provided at the closed end of the storage tub 130, and at least one of the at least one waterproof tub 1310 fitted into the waterproof tub 1310 is provided at the open end of the exhaust pipe 151. One first waterproof annular portion 154 is provided. By inserting the first waterproof annular portion 154 into the waterproof tub 1310 in this way, it is possible to effectively prevent water from flowing into the steam passage 14 and improve the effect of preventing the steam valve 15 from leaking water. Can be.

Further, referring to FIG. 7, when the kettle 10 falls down, water flows on the outer wall of the exhaust pipe 151 and flows into the steam passage 14, which may cause water leakage. In the embodiment, at least one second waterproof annular portion 155 extending to the inner wall of the storage tank 130 is provided on a side of the exhaust pipe 151 to prevent water from flowing to the outer wall of the exhaust pipe 151. Here, since the exhaust pipe 151 can rotate, no interference occurs between the exhaust pipe 151 and the inside of the storage tank 130. Therefore, a gap remains between the exhaust pipe 151 and the storage tank 130, so that water can flow into the steam passage 14 through the gap. Accordingly, when the second waterproof annular portion 155 is provided, the second waterproof annular portion 155 generates a resistance to the water flow, and the speed at which water flows into the steam passage 14 can be reduced. The time to make the kettle 10 can be secured. Note that two, three, or three or more second waterproof annular portions 155 may be provided to further reduce the speed at which water flows into the steam passage 14.

As described in the above embodiment, when the kettle 10 is tilted by 180 °, the pressure around the exhaust pipe 151 is large, and the water flows into the steam passage 14 in a short time, which may cause water leakage. In another preferred embodiment, since water reduces the rate at which flow into the steam passage 14, or the water to avoid that flows into the steam passage 14, the weight 156 is provided for sealing in the exhaust pipe 151 Can be When the inclination angle of the exhaust pipe 151 is greater than 90 °, the sealing weight 156 moves from the closed end of the exhaust pipe 151 to the open end of the exhaust pipe 151, thereby closing the exhaust hole 131 at the closed end of the storage tank 130. Seal.

Referring to FIG. 6A, if the sealing weight 156 cannot block the exhaust pipe 151 based on the above-described embodiment, the exhaust of the exhaust pipe 151 may not be smooth. Therefore, in this embodiment, a gas guide structure is formed on the inner wall of the exhaust pipe 151, and the gas guide structure forms a gas guide passage between the sealing weight 156 and the inner wall of the exhaust pipe 151. Here, the gas guide structure is a protrusion, for example, a circular protrusion or a rib 1511 provided on the inner wall of the exhaust pipe 151 or a gas guide tank provided on the inner wall of the exhaust pipe. Here, it is preferable gas guide structure is a plurality of ribs 1511 that are arranged in the circumferential direction of and the exhaust pipe 151 extending in the axial direction of the exhaust pipe 151. A gas guide passage is formed between adjacent ribs 1511.

  In the above embodiment, the sealing weight 156 may have various shapes as long as it can close the exhaust hole 131 when the kettle falls down. For example, when the sealing weight 156 is formed in a columnar or spherical shape, the resistance of the sealing weight 156 moving within the exhaust pipe 151 is reduced, and the movement is smoother.

  In another preferred embodiment, an elastic member 159 is provided between the lower cover 12 and the end face of the closed end of the exhaust pipe 151 to improve the sealing between the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131. . The elastic member 159 is provided around the rotation shaft 157 on the lower end surface of the exhaust pipe 151 (here, an example in which the rotation mounting portion is the rotation shaft 157 will be described). As described above, when the kettle 10 falls down, the elastic member 159 quickly raises the exhaust pipe 151 and seals the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131, thereby preventing the steam valve 15 from leaking water. Can be improved. Here, the elastic member 159 may be a spring, a rubber spacer, or an elastic piece, but the elastic member 159 is preferably a stainless spring.

  By providing the spring, the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131 can be sealed, but the friction torque of the rotation of the exhaust pipe 151 itself also increases. Here, when the spring and the lower end of the exhaust pipe 151 abut, the exhaust pipe 151 mainly receives the frictional force from the spring.

If the spring does not contact the exhaust pipe 151 tightly, if the kettle 10 falls, the frictional force of the spring on the exhaust pipe 151 increases, or the frictional force between the spring and the lower cover 12 increases. The steam valve 15 cannot rotate smoothly. Based on the parameters of the weight member 152 and the intake pipe 153, the inner diameter of the spring is D∈ [10 mm, 20 mm], the total number of coils is n∈ [4, 12], and the spring constant is k∈ [10 g / mm, 40 g / mm] and the mass to m ₃ ∈ [0.3 g, 1.5 g]. Thus, normal rotation of the steam valve 15 can be ensured.

  Referring to FIG. 6A, it is conceivable that the elastic function of the elastic member 159 may be reduced or eliminated by the long compression of the elastic member 159 based on the above embodiment. In this embodiment, a sleeve 158 is provided on the exhaust pipe 151 from the end face of the closed end thereof, and the sleeve 158 is provided around the elastic member 159. Thus, even if the pressure applied to the elastic member 159 is too large, the elastic member 159 is unlikely to be permanently deformed by the support of the sleeve 158.

While there has been mainly described the improvement of the steam valve 15 and the container cover 10 a, hereinafter, the coupling relation between the container cover 10a and the container body 10b will be described in detail.

  Referring to FIGS. 2 and 3, the container cover 10a is attached to the container body 10b. The upper end of the container body 10b is an opening, and the container cover 10a seals the open end of the container body 10b. In a preferred embodiment, a sealing ring 19 is provided between the lower cover 12 and the container body 10b, and the container cover 10a is hermetically connected to the inner wall of the container body 10b by the sealing ring 19. In addition, in order to secure the connection strength between the container cover 10a and the container body 10b, the container cover 10a and the container body 10b are connected by a locking structure. The locking structure includes a telescopic hook provided on the container cover 10a and a lock tank provided on the inner wall of the container body 10b. When the container cover 10a is attached to the container body 10b, the hook is deformed by receiving pressure. When the hook enters the lock tub, the hook recovers to its original shape, thereby coupling with the lock tub, thereby positioning the container cover 10a to the container body 10b.

  In the third direction, the steam valve can rotate freely. Therefore, in this embodiment, the steam valve 15 includes an exhaust pipe 151, a weight member 152, and an intake pipe 153 in order to improve the effect of preventing water leakage. One end of the exhaust pipe 151 is open and the other end is closed. A water-tight structure is provided on the outer surface of the exhaust pipe 151. The water-tight structure includes at least a first waterproof annular portion 154 provided on an outer wall of the exhaust pipe 151 and / or a second waterproof annular portion 155 provided on an end surface of an open end of the exhaust pipe 151. The exhaust pipe 151 is provided with a free rotation unit that rotates the exhaust pipe 151 in the axial direction.

  The intake pipe 153 is connected to the exhaust pipe 151 so as to communicate with the exhaust pipe 151, and extends laterally from the exhaust pipe 151. The weight member 152 is connected to the exhaust pipe 151 and extends laterally from the exhaust pipe 151. The angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is greater than 90 ° and equal to or less than 180 °. The gravitational torque by which the weight member 152 rotates around the free rotation portion is greater than the gravitational torque by which the intake pipe 153 rotates around the free rotation portion.

  Specifically, the exhaust pipe 151 includes a tube and an end plate, and the upper end of the tube is an opening, and the lower end is sealed by the end plate. The weight member 152 may be attached to a side wall of the exhaust pipe 151 or may be attached to a lower end of the exhaust pipe 151. Similarly, the intake pipe 153 may be attached to a side wall of the exhaust pipe 151 or may be attached to a lower end of the exhaust pipe 151. It is preferable that both the intake pipe 153 and the weight member 152 be attached to the side wall of the exhaust pipe 151 for the convenience of attachment. Hereinafter, an example in which both the intake pipe 153 and the weight member 152 are attached to the side wall of the exhaust pipe 151 will be described.

  An exhaust port 1510 is provided on the side wall of the tube, and an intake pipe 153 is attached to the exhaust port 1510. The intake pipe 153 communicates with the pipe through the exhaust port 1510.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 is detachably attached to the exhaust pipe 151. For example, the weight member 152 and the exhaust pipe 151 can be connected by a screw. The weight member 152 and the intake pipe 153 form an included angle in the circumferential direction of the exhaust pipe 151. In addition, the weight of the weight member 152 is large, and usually, a metal material, for example, a high-density material such as stainless steel or copper is used. The exhaust pipe 151 and the intake pipe 153 are made of a plastic material or a metal material.

  The free rotation part is attached to a rotation mounting part in the container cover 10a. The free rotating part belongs to a part of the tubular body, for example, the upper end, the center or the lower end of the tubular body, and the rotating mounting part is an annular part, and the tubular body is installed in the annular part. The free rotating portion may be a first rotating shaft 157 provided on a lower end surface of the exhaust pipe 151. The first rotation shaft 157 and the exhaust pipe 151 are provided coaxially, and the rotation mounting portion is a first shaft hole provided in the lower cover 12. The free rotating portion is a second shaft hole (blind hole) provided at the sealed end of the exhaust pipe 151, and the rotating mounting portion is provided on the lower cover 12 and is a second rotating shaft fitted into the shaft hole. Good. The free rotating portion may be a bearing provided on the side wall of the exhaust pipe 151, and the rotating mounting portion is a bearing hole provided in the storage tank 130, and the bearing is fixed in the bearing hole.

  When the kettle 10 falls down, the container cover 10a rotates 90 degrees with respect to the normal state. Since the gravitational torque of the weight member 152 is larger than the gravitational torque of the intake pipe 153, the free rotation portion rotates with respect to the rotary mounting portion by the action of the weight member 152, and the weight member 152 is finally positioned at the lowest position below the liquid level. However, the position of the intake pipe 153 increases, and water in the kettle 10 cannot easily enter the intake pipe 153.

Here, the gravitational torque of the weight member 152 is M ₁ = G ₁ × L ₁ , and the gravitational torque of the intake pipe 153 is M ₂ = G ₂ × L ₂ . In this equation, G ₁ is the weight of the weight member 152, L ₁ is the vertical distance between the center of gravity of the weight member 152 and the axis of the exhaust pipe 151, G ₂ is the weight of the intake pipe 153, and L ₂ Is the vertical distance between the center of gravity of the intake pipe 153 and the axis of the exhaust pipe 151. Here, if M ₁ > M ₂ is satisfied, when the liquid heating container falls (falls by 90 °), the steam valve 15 rotates, the weight member 152 rotates downward, and the exhaust pipe 153 is lifted.

  The angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is 90 ° <α ≦ 180 °. When 0 ° <α ≦ 90 °, when the kettle 10 falls down, the water level in the kettle 10 becomes higher than the steam valve 15, so that water can flow into the exhaust pipe 151 along the intake pipe 153. Therefore, when 90 ° <α ≦ 180 °, even if the kettle 10 falls, it is difficult for the water in the kettle 10 to completely submerge the intake pipe 153, and the end of the intake pipe 153 extends above the water level. Therefore, water cannot easily flow into the exhaust pipe 151 by the intake pipe 153, and the effect of preventing water leakage is improved.

  Further, the first waterproof annular portion 154 and the second waterproof annular portion 155 project from the outer surface of the exhaust pipe 151. By providing the first waterproof annular portion 154 or the second waterproof annular portion 155, it is possible to effectively prevent water from penetrating from between the steam valve 15 and the storage tank 130 and flowing into the steam passage 14 when the kettle falls down. Can be prevented. The first waterproof annular portion 154 and the second waterproof annular portion 155 may be continuous or discontinuous.

  In a preferred embodiment, the number of the first waterproof annular portions 154 is plural, and they are sequentially arranged along the axial direction of the exhaust pipe 151. As described above, when the steam valve 15 is attached to the container cover 10a, the contact area between the side surface of the exhaust pipe 151 and the side wall surface of the storage tank 130 is reduced by forming the first waterproof annular portion 154. Therefore, when the exhaust pipe 151 rotates, the interference between the exhaust pipe 151 and the side wall surface of the storage tank 130 is reduced, and the resistance to rotation of the steam valve 15 is reduced. Similarly, in consideration of the rotation of the steam valve 15, there are a plurality of second waterproof annular portions 155, which are arranged along the radial direction of the exhaust pipe 151. Thereby, the resistance to rotation of the steam valve 15 can be reduced.

  Further, when the kettle 10 falls down, water can flow between the exhaust pipe 151 and the side wall surface of the storage tank 130. Since the first waterproof annular portion 154 and / or the second waterproof annular portion 155 are formed, water flows between the two first waterproof annular portions 154 and / or between the two second waterproof annular portions 155. Only when the gap is completely submerged, it can overflow from the first waterproof annular portion 154 and / or the second waterproof annular portion 155, so that the effect of preventing water leakage can be improved.

  In another preferred embodiment, in order to further improve the effect of preventing the water leakage of the steam valve 15, the sum of the volumes of the sealed space formed between the water-sealed structure and the inner wall of the storage tank 130 is V0, The total volume between the pipe 151 and the side wall of the storage tank 130 is V1, and V0 / V1∈ [0.5, 0.95]. Here, the volume occupied by the first waterproof annular portion 154 and / or the second waterproof annular portion 155 is V2, and V1 = V2 + V0. Since the steam valve 15 can rotate in the storage tank 130, a large gap between the side wall surface of the storage tank 130 and the side surface of the exhaust pipe 151 causes a large interference action due to frictional force between the two. Avoid things. Here, when the value of V0 / V1 approaches 0.5, that is, the sum of the volumes of the first waterproof annular portion 154 and / or the second waterproof annular portion 155 is about 50% of the remaining space of the storage tank. When it is occupied, the gap between the side wall surface of the storage tank 130 and the side surface of the exhaust pipe 151 is relatively large, and the rotation effect of the steam valve 15 is improved, but the first waterproof annular portion 154 and / or The waterproof effect of the second waterproof annular portion 155 is relatively reduced. When the value of V0 / V1 approaches 0.95, that is, when the volume of the first waterproof annular portion 154 and / or the second waterproof annular portion 155 occupies the remaining space of 5% of the entire storage tank 130. The gap between the side wall surface of the storage tank 130 and the side surface of the exhaust pipe 151 is relatively small, and the resistance to rotation of the steam valve 15 is large, but the first waterproof annular portion 154 and / or the second The waterproof effect of the waterproof annular portion 155 is relatively increased. Here, by setting the value of V0 / V1 to 0.6, 0.7, 0.8, 0.9 or the like, the rotation of the steam valve 15 is made smooth, and the first waterproof annular portion 154 and / or the second The waterproof effect of the waterproof annular portion 155 is also improved. The value of V0 / V1 is preferably 0.75 to 0.85.

  Referring to FIGS. 3, 4b, and 6b, in the above-described embodiment, the range of the angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is wide, and 90 ° <α ≦ 180 °. Here, if α is small, when the kettle 10 falls, the water level in the kettle 10 becomes higher than the end of the intake pipe 153, and there is a possibility that the water flows into the exhaust pipe 151 from the end of the intake pipe 153. The effect of preventing the water leakage of the water discharge valve 18 becomes worse. In a preferred embodiment, the angle α between the extending direction of the weight member 152 and the extending direction of the intake pipe 153 is set to 170 ° ≦ α ≦ 180 ° in order to improve the effect of preventing the water discharge valve 18 from leaking water. In this case, even if the kettle 10 falls, it is difficult for the water in the kettle 10 to submerge the end of the intake pipe 153, and water cannot flow into the exhaust pipe 151 by the intake pipe 153. Increase.

  Based on the above-described embodiment, α is set to 180 ° in order to optimize the effect of preventing the steam valve 15 from leaking water. That is, the weight member 152 and the intake pipe 153 are provided on opposite sides of the exhaust pipe 151, respectively.

At the moment the kettle 10 falls, the water in the container body 10b quickly flows into the container cover 10a, and flows into the exhaust pipe 151 by the intake pipe 153. If the rotation speed of the steam valve 15 is too slow, water flows into the intake pipe 153 before the intake pipe 153 rotates to the highest position (a large amount of water flows into the intake pipe 153 even by a difference of 0.1 second). There is a possibility of water leakage from the container cover 10.

  Referring to FIGS. 3 and 4b, in the above embodiment, the intake pipe 153 may be a circular pipe, a square pipe, or another shape of pipe. Since the pipe having such a shape has a large area in contact with air in the rotation direction, the resistance of the received air also increases. In this embodiment, the intake pipe 153 is provided in a flat shape. Thus, when the kettle 10 falls down, the intake pipe 153 can quickly rotate to the highest position, and water can be prevented from flowing into the intake pipe 153.

  In addition, considering that the radius of the container cover 10a is usually 5 cm to 8 cm, the length of the intake pipe 153 must also be limited. If the intake pipe 153 is too long, the intake pipe 153 will easily interfere with other structures, and the entire steam valve 15 will not rotate smoothly. If the suction pipe 153 is too short, the tip of the suction pipe 153 may be submerged if the liquid heating container 10 falls down. In this embodiment, it is preferable that the length of the intake pipe 153 be 3 cm to 5 cm.

  The intake pipe 153 and the exhaust pipe 151 can be integrally formed in consideration of the tightness of the connection between the intake pipe 153 and the exhaust pipe 151. Thereby, the tightness of the connection part between both is improved, and it becomes difficult to leak or leak water.

  Both the intake pipe 153 and the weight member 152 are attached to arbitrary positions on the side wall of the exhaust pipe 151. Both may have a vertical difference in the vertical direction, or they may be located on the same plane of rotation. In an embodiment, both are preferably located on the same plane of rotation. Hereinafter, an example in which both are located on different rotation planes, the weight member 152 is provided above, and the intake pipe 153 is provided below will be described. When the weight member 152 rotates, the exhaust pipe 151 needs to transmit the gravitational torque of the weight member 152 to the intake pipe 153. In this process, since the exhaust pipe 151 generates a resistance to the rotation of the weight member 152, the rotation of the intake pipe 153 to the optimum position is delayed. When both are located on the same rotation plane, the resistance generated by the exhaust pipe 151 is small, so that the intake pipe 153 can quickly rotate to the highest position.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 can be detachably connected to the exhaust pipe 151. The exhaust pipe 151 is made of a plastic material, and the weight member 152 is made of a metal material. The weight member 152 is fixed to the exhaust pipe 151 by two-shot injection molding. In a preferred embodiment, the connection between the weight member 152 and the exhaust pipe 151 is preferably a detachable connection to facilitate attachment, detachment or replacement of the weight member 152. Specifically, a protrusion 1512 is provided on the side wall of the exhaust pipe 151, and the weight member (152) is attached to the protrusion 1512. A protrusion 1512 is provided on a side wall of the exhaust pipe 151, and has a protective action on the exhaust pipe 151 by connecting the protrusion 1512 and the weight member 152. If the weight member 152 is directly attached to the side wall of the exhaust pipe 151, the attachment of the weight member 152 may cause the exhaust pipe 151 to leak or deform.

  With continued reference to FIGS. 3 and 4b, in another preferred embodiment, the weight member 152 is formed in a fan shape, and its center end is connected to the exhaust pipe 151. This is because the fan-shaped weight member 152 is easy to process and the cost is low. Further, when the fan-shaped weight member 152 rotates, the resistance is small, the rotation speed is high, and the intake pipe 153 can be raised quickly.

Referring to FIGS. 2 and 8b, there are two situations in which kettle 10 falls. The first is when the kettle 10 falls down by 90 °, and the second is when the tilt angle of the kettle 10 is larger than 90 °, for example, 180 °. When falling down by 90 °, the pressure of the water flow around the exhaust pipe 151 is small, and it is difficult for water to enter the steam passage 14 in a short time. However, when the kettle 10 falls down by 180 °, the pressure around the exhaust pipe 151 is large, and the water reaches the end face of the open end of the exhaust pipe 151 in a short time, and flows into the steam passage 14 through the exhaust hole 131. , Water leakage may occur. In a preferred embodiment, in order to avoid the above situation, at least one waterproof tub 1310 is provided at the end face of the closed end of the storage tub 130, and at least the end face of the open end of the exhaust pipe 151 is fitted into the waterproof tub 1310. One second waterproof annular portion 155 is provided. As described above, by inserting the second waterproof annular portion 155 into the waterproof tub 1310, it is possible to effectively prevent water from flowing into the steam passage 14 and improve the effect of preventing the steam valve 15 from leaking water. Can be.

As described in the above-described embodiment, when the kettle 10 is tilted by 180 °, the pressure around the exhaust pipe 151 is large, and water flows into the steam passage 14 in a short time, which may cause water leakage. In another preferred embodiment, since water reduces the rate at which flow into the steam passage 14, or the water to avoid that flows into the steam passage 14 is provided with a sealing weight 156 in the exhaust pipe 151 . When the inclination angle of the exhaust pipe 151 is greater than 90 °, the sealing weight 156 moves from the closed end of the exhaust pipe 151 to the open end of the exhaust pipe 151, thereby closing the exhaust hole 131 at the closed end of the storage tank 130. Seal.

Referring to FIG. 6B, it is conceivable that the exhaust of the exhaust pipe 151 may not be smooth unless the sealing weight 156 blocks the exhaust pipe 151 based on the embodiment. Therefore, in this embodiment, a gas guide structure is provided on the inner wall of the exhaust pipe 151, and the gas guide structure forms a gas guide passage between the sealing weight 156 and the inner wall of the exhaust pipe 151. Here, the gas guide structure may be a protrusion, for example, a circular protrusion or a rib 1511 provided on the inner wall of the exhaust pipe 151 , or may be a gas guide tank provided on the inner wall of the exhaust pipe 151 . Gas guide structure is preferably a plurality of ribs 1511 that are distributed in the circumferential direction of and the exhaust pipe 151 extending in the axial direction of the exhaust pipe 151. A gas guide passage is formed between adjacent ribs 1511.

  In the above embodiment, the sealing weight 156 may have various shapes, as long as the exhaust hole 131 can be closed when the kettle falls down. For example, when the sealing weight 156 is formed in a columnar or spherical shape, the resistance of the sealing weight 156 to move in the exhaust pipe 151 is reduced, and the movement is smoother. The sealing weight 156 may be a common material such as stainless steel, ceramics, or glass, which can reduce the manufacturing cost. Also, since the volume inside the container cover is limited, the mass of the sealing weight 156 must not be too large. If it is too large, the volume of the sealing weight 156 increases to some extent, and interference is likely to occur. The mass of the sealing weight 156 must not be too small. If it is too small, it affects the reaction speed of the rotation of the steam valve 15 and is disadvantageous for preventing water leakage.

  In another preferred embodiment, an elastic member 159 is provided between the lower cover 12 and the end face of the closed end of the exhaust pipe 151 to improve the sealing between the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131. . The elastic member 159 is provided around the rotation shaft 157 on the lower end surface of the exhaust pipe 151. When the kettle 10 falls, the elastic member 159 quickly raises the exhaust pipe 151 to seal the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131, thereby improving the effect of preventing the steam valve 15 from leaking water. Can be. Here, the elastic member 159 may be a spring, a rubber spacer, or an elastic piece, but the elastic member 159 is preferably a spring.

  Referring to FIG. 6B, it is conceivable that the elastic function of the elastic member 159 is reduced or eliminated by the long compression of the elastic member 159 based on the above embodiment. In this embodiment, the exhaust pipe 151 is provided with a sleeve 158 extending from the end face of the closed end, and the sleeve 158 is provided around the elastic member 159. Thus, even if the pressure applied to the elastic member 159 is too large, the elastic member 159 is less likely to be permanently deformed by the support of the sleeve 158.

In the fourth direction, the cross-sectional area of the intake pipe 153 should not be too small, taking into account the conduction effect of the intake pipe 153 on steam. If the water in the kettle is too small, the conduction speed of the steam in the intake pipe 153 becomes slow when the water in the kettle boils, and the steam cannot flow smoothly to the temperature control device at the bottom of the liquid heating vessel 10. Affects reaction rate off. As a result, the kettle 10 is continuously heated for a certain period of time, so that the water in the kettle 10 is excessively boiled, and the pressure inside the kettle increases, resulting in a safety risk. Due to the limited space inside the container cover, the cross section of the intake pipe must not be too large. If it is too large, interference with other structures in the container cover or the inner wall of the container cover is likely to occur when the intake pipe rotates. This limits the rotation of the entire steam valve, which is disadvantageous for preventing water leakage. Therefore, in this embodiment, the cross-sectional area of the intake pipe 153 needs to be limited to some extent, and the cross-sectional area is S∈ [20 mm ² , 120 mm ² ].

  Referring to FIGS. 3, 4a, 5a and 6a, in the above embodiment, the range of the angle α in the circumferential direction of the exhaust pipe 151 between the weight member 152 and the intake pipe 153 is wide, and 90 ° <α ≦ 180 °. It is. Here, if α is small, when the liquid heating container 10 falls down, the water level in the liquid heating container 10 becomes higher than the end of the intake pipe 153, and there is a possibility that the water level flows into the exhaust pipe 151 from the end of the intake pipe 153. In addition, the effect of preventing water leakage of the water discharge valve 18 of the above embodiment is deteriorated. In a preferred embodiment, the angle α between the extending direction of the weight member 152 and the extending direction of the intake pipe 153 is set to 170 ° ≦ α ≦ 180 ° in order to improve the effect of preventing water leakage of the water discharge valve 18. . In this case, even if the liquid heating container 10 falls down, it is difficult for the water in the liquid heating container 10 to submerge the end of the intake pipe 153, and water does not flow into the exhaust pipe 151 from the intake pipe 153. The effect is enhanced.

  Based on the above-described embodiment, in order to optimize the effect of preventing the steam valve 15 from leaking water, α is set to 180 °. Each is provided.

At the moment the kettle 10 falls, the water in the container body 10b quickly flows into the container cover 10a, and flows into the exhaust pipe 151 by the intake pipe 153. If the rotation speed of the steam valve 15 is too slow, water flows into the intake pipe 153 before the intake pipe 153 rotates to the highest position (a large amount of water flows into the intake pipe 153 even by a difference of 0.1 second). There is a risk of water leakage from the container cover 10a .

  Referring to FIGS. 3 and 4a, in the above embodiment, the intake pipe 153 may be a circular pipe, a square pipe, or another shape of pipe. A pipe having such a shape has a large area in contact with air in the rotation direction, and receives a large air resistance. In this embodiment, the intake pipe 153 is formed in a flat shape. Thereby, when the kettle 10 falls down, the intake pipe 153 can rotate at the highest speed to the highest position, and it is possible to prevent water from flowing into the intake pipe 153.

  In addition, considering that the radius of the container cover 10a is usually 5 cm to 8 cm, the length of the intake pipe 153 must also be limited. If the intake pipe 153 is too long, the intake pipe 153 easily interferes with other structures, and the entire steam valve 15 does not rotate smoothly. If the suction pipe 153 is too short, the tip of the suction pipe 153 may be submerged if the liquid heating container 10 falls down. In this embodiment, it is preferable that the length of the intake pipe 153 is 3 cm to 5 cm.

  The intake pipe 153 and the exhaust pipe 151 may be integrally formed in consideration of the tightness of the connection between the intake pipe 153 and the exhaust pipe 151. Thereby, the hermeticity of the connection part between both is improved and it becomes difficult to leak or leak water.

  Both the intake pipe 153 and the weight member 152 are attached to arbitrary positions on the side wall of the exhaust pipe 151, and both have an elevation difference in the vertical direction, or they can be located on the same rotation plane. In an embodiment, both are preferably located on the same plane of rotation. Hereinafter, an example in which both are located on different rotation planes, the weight member 152 is provided above, and the intake pipe 153 is provided below will be described. When the weight member 152 rotates, the exhaust pipe 151 needs to transmit the gravitational torque of the weight member 152 to the intake pipe 153. In this process, since the exhaust pipe 151 generates a resistance to the rotation of the weight member 152, the rotation of the intake pipe 153 to the optimum position is delayed. When both are located on the same rotation plane, the resistance generated by the exhaust pipe 151 is small, and the intake pipe 153 can quickly rotate to the highest position.

  The weight member 152 is provided on a side wall of the exhaust pipe 151. The weight member 152 is fixedly connected to the exhaust pipe 151 by, for example, welding, and the weight member 152 and the exhaust pipe 151 can be integrally formed. The weight member 152 can be detachably connected to the exhaust pipe 151. The exhaust pipe 151 is made of a plastic material, and the weight member 152 is made of a metal material. The weight member 152 is fixed to the exhaust pipe 151 by two-shot injection molding. In a preferred embodiment, the connection between the weight member 152 and the exhaust pipe 151 is preferably a detachable connection to facilitate attachment, detachment or replacement of the weight member 152. Specifically, a protrusion 1512 is provided on a side wall of the exhaust pipe 151, and the weight member (152) is attached to the protrusion 1512. A protrusion 1512 is provided on a side wall of the exhaust pipe 151, and has a protective action on the exhaust pipe 151 by connecting the protrusion 1512 and the weight member 152. If the weight member 152 is directly attached to the side wall of the exhaust pipe 151, the attachment of the weight member 152 may cause the exhaust pipe 151 to leak or deform.

  3 and 4a, in another preferred embodiment, the weight member 152 is formed in a fan shape, and a center end thereof is connected to the exhaust pipe 151. This is because the fan-shaped weight member 152 is easy to process and the cost is low. In addition, the fan-shaped weight member 152 has a small resistance when rotating, has a high rotation speed, and can quickly lift the intake pipe 153.

Referring to FIGS. 2 and 8a, there are two situations in which kettle 10 falls. The first is when the kettle 10 falls down by 90 °, and the second is when the tilt angle of the kettle 10 is larger than 90 °, for example, 180 °. When falling down by 90 °, the pressure of the water flow around the exhaust pipe 151 is small, and it is difficult for water to enter the steam passage 14 in a short time. However, when the kettle 10 falls by 180 °, the pressure around the exhaust pipe 151 is large, and the water reaches the end face of the open end of the exhaust pipe 151 in a short time, and flows into the steam passage 14 through the exhaust hole 131. , Water leakage may occur. In a preferred embodiment, in order to avoid the above situation, at least one waterproof tub 1310 is provided at the closed end of the storage tub 130, and is fitted into the waterproof tub 1310 at the open end of the exhaust pipe 151. At least one first waterproof annular portion 154 is provided. By inserting the first waterproof annular portion 154 into the waterproof tank 1310, it is possible to effectively prevent water from flowing into the steam passage 14 and improve the effect of preventing the steam valve 15 from leaking water.

Further, referring to FIG. 7, when the kettle 10 falls, water reaches the outer wall of the exhaust pipe 151, flows into the steam passage 14, and may cause water leakage. In the embodiment, at least one second waterproof annular portion 155 extending to the inner wall of the storage tank 130 is provided on a side portion of the exhaust pipe 151 in order to prevent water from reaching the outer wall of the exhaust pipe 151. Here, since the exhaust pipe 151 can rotate, no interference occurs between the exhaust pipe 151 and the inner wall of the storage tank 130. Therefore, a gap is left between the exhaust pipe 151 and the storage tank 130, so that water can flow into the steam passage 14 through the gap. When the second waterproof annular portion 155 is installed, the second waterproof annular portion 155 generates resistance to the water flow, and the speed at which water flows into the steam passage 14 can be reduced. The time to stand can be secured. In order to further reduce the speed at which water flows into the steam passage 14, two, three, or three or more second waterproof annular portions 155 may be provided.

As described in the above-described embodiment, when the kettle 10 is tilted by 180 °, the pressure around the exhaust pipe 151 is large, and water flows into the steam passage 14 in a short time, which may cause water leakage. In another preferred embodiment, water or to reduce the rate of flow into the steam passage 14, or the water to avoid that flows into the steam passage 14, it is closed for weight 156 in said exhaust pipe 151 Provided. When the inclination angle of the exhaust pipe 151 is greater than 90 °, the sealing weight 156 moves from the closed end of the exhaust pipe 151 to the open end of the exhaust pipe 151 to thereby close the closed end of the storage tank 130. Of the exhaust hole 131 is sealed.

Referring to FIG. 6A, if the sealing weight 156 cannot block the exhaust pipe 151 based on the above-described embodiment, the exhaust of the exhaust pipe 151 may not be smooth. Therefore, in this embodiment, a gas guide structure is provided on the inner wall of the exhaust pipe 151, and the gas guide structure forms a gas guide passage between the sealing weight 156 and the inner wall of the exhaust pipe 151. Here, the gas guide structure may be a protrusion, for example, a circular protrusion or a rib 1511 provided on the inner wall of the exhaust pipe 151 , or may be a gas guide tank provided on the inner wall of the exhaust pipe 151 . Here, it is preferable gas guide structure is a plurality of ribs 1511 that are distributed in the circumferential direction of the stretched and the exhaust pipe 151 in the axial direction of the exhaust pipe 151. A gas guide passage is formed between adjacent ribs 1511.

  In the above embodiment, the sealing weight 156 may have various shapes, as long as the exhaust hole 131 can be closed when the kettle falls down. For example, when the sealing weight 156 is formed in a columnar or spherical shape, the resistance of the sealing weight 156 moving within the exhaust pipe 151 is reduced, and the movement is smoother.

  In another preferred embodiment, an elastic member 159 is provided between the lower cover 12 and the end face of the closed end of the exhaust pipe 151 to improve the sealing between the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131. Provided. The elastic member 159 is provided around the rotation shaft 157 on the lower end surface of the exhaust pipe 151. When the kettle 10 falls, the elastic member 159 quickly raises the exhaust pipe 151 to seal the upper end of the exhaust pipe 151 and the periphery of the exhaust hole 131, thereby improving the effect of preventing the steam valve 15 from leaking water. Can be. Here, the elastic member 159 may be a spring, a rubber spacer, or an elastic piece, but the elastic member 159 is preferably a spring.

  Referring to FIG. 6A, it is conceivable that the elastic function of the elastic member 159 is reduced or eliminated by the long compression of the elastic member 159 based on the above-described embodiment. In this embodiment, the exhaust pipe 151 is provided with a sleeve 158 extending from the end face of the closed end thereof, and the sleeve 158 is provided around the elastic member 159. Thus, even if the pressure applied to the elastic member 159 is too large, the elastic member 159 is unlikely to be permanently deformed by the support of the sleeve 158.

  The above are only preferred embodiments of the present invention, and do not limit the scope of the patent of the present invention, and are carried out using the contents of the specification and drawings of the present invention without departing from the gist of the present invention. Equivalent structural changes or direct / indirect applications to other relevant technical fields are all within the protection scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Liquid heating container 10 'Cover main body 10a Container cover 10b Container main body 10c Power supply base 11 Upper cover 12 Lower cover 13 Frame 14 Steam passage 15 Steam valve 16 Push button 17 Link rod 18 Water discharge valve 19 Sealing ring 100 Second storage tank 130 Storage Vessel 131 Exhaust hole 141 Water outlet 151 Exhaust pipe 152 Weight member 153 Intake pipe 154 Rotating shaft 155 Second waterproof annular part 156 Sealing weight 157 Rotating shaft 158 Sleeve 159 Elastic material 1310 Waterproofing tank 1510 Exhaust port 1511 Rib 1512 Convex part

Claims (29)

One end is open, the other end is an exhaust pipe having a closed shape, wherein the exhaust pipe is provided with a free rotating portion that rotates the exhaust pipe around its axial direction,
An intake pipe communicating with the exhaust pipe, and extending laterally from the exhaust pipe;
A weight member connected to the exhaust pipe and extending laterally from the exhaust pipe;
The angle α in the circumferential direction of the exhaust pipe between the weight member and the intake pipe is greater than 90 ° and equal to or less than 180 °, and the gravitational torque at which the weight member rotates around the free rotation portion is such that the intake pipe is Greater than the gravitational torque rotating around the free rotation section,
A sealing weight is provided in the exhaust pipe, and the sealing weight moves from the closed end of the exhaust pipe to the open end of the exhaust pipe when the inclination angle of the exhaust pipe is greater than 90 °. Thereby, the exhaust hole at the closed end of the storage tank that stores the steam valve is sealed, and a gas guide structure is provided on the inner wall of the exhaust pipe, and the gas guide structure is formed by the sealing weight and the inner wall of the exhaust pipe. A gas guide passage is formed between the ribs, and the gas guide structure is a plurality of ribs extending along the axial direction of the exhaust pipe and arranged along the circumferential direction of the exhaust pipe. The gas guide passage is formed therebetween, and the sealing weight is formed in a columnar or spherical shape.
A steam valve, characterized in that: A water-tight structure is provided on an outer surface of the exhaust pipe, and the water-tight structure is provided at least on a first waterproof annular portion provided on an outer wall of the exhaust pipe and / or on an end face of an open end of the exhaust pipe. A second waterproof annular portion including a plurality of the first waterproof annular portions and a plurality of the first waterproof annular portions sequentially arranged along an axial direction of the exhaust pipe; Placed along the direction,
  The steam valve according to claim 1, wherein:   The steam valve according to claim 1, wherein the intake pipe is provided in a flat shape, and a length of the intake pipe is 3 cm to 5 cm.   The intake pipe and the exhaust pipe are integrally formed, and the intake pipe extends outward in a radial direction of the exhaust pipe and is arranged on the same rotation plane as the weight member. The steam valve according to claim 1.   2. The steam valve according to claim 1, wherein an angle α in a circumferential direction of the exhaust pipe between the weight member and the intake pipe is 170 ° or more and 180 ° or less. 3.   The steam valve according to claim 1, wherein a convex portion is formed on a side wall of the exhaust pipe, and the weight member is detachably mounted on the convex portion.   The steam valve according to claim 1, wherein the exhaust pipe is made of a plastic material, the weight member is made of a metal material, and the weight member is fixed to the exhaust pipe by two-shot injection molding.   The steam valve according to claim 1, wherein the weight member is formed in a fan shape, and the exhaust pipe is connected to an end of a center of the weight member. The cross-sectional area of the intake pipe is S∈ [20 mm ² , 120 mm ² ], the length of the intake pipe is L ₀ ∈ [20 mm, 60 mm], and the intake pipe is provided in a flat shape. The steam valve according to claim 1, wherein a cross section of the intake pipe is elliptical. The steam valve according to claim 9 , wherein a friction-resistant layer is provided at an open end of the exhaust pipe and / or the free rotation portion. A container cover including a cover body, an upper cover and a lower cover located at upper and lower ends of the cover body, and the steam valve according to any one of claims 1 to 10 , wherein the cover body includes One end communicates with the opening end of the exhaust pipe, and the other end is provided with a steam passage communicating with the outside, and a rotation mounting part for attaching the free rotation part is provided in the container cover,
A sealing weight is provided in the exhaust pipe, and the sealing weight moves from the closed end of the exhaust pipe to the open end of the exhaust pipe when the inclination angle of the exhaust pipe is greater than 90 °. By closing the exhaust hole at the sealed end of the storage tank, a gas guide structure is provided on the inner wall of the exhaust pipe, and the gas guide structure is provided between the sealing weight and the inner wall of the exhaust pipe. A passage is formed, and the gas guide structure is a plurality of ribs extending along an axial direction of the exhaust pipe and arranged along a circumferential direction of the exhaust pipe, and the gas guide structure is provided between adjacent ribs. A container cover, wherein a guide passage is formed, and the sealing weight is formed in a columnar or spherical shape. A container cover including a cover body, an upper cover and a lower cover located at upper and lower ends of the cover body, and the steam valve according to any one of claims 1 to 10 , wherein the cover body includes One end communicates with the opening end of the exhaust pipe, and the other end is provided with a steam passage communicating with the outside, and a rotation mounting part for attaching the free rotation part is provided in the container cover,
The free rotating part is a rotating shaft provided on an end face of a closed end of the exhaust pipe, the rotating mounting part is a shaft hole provided in the lower cover, and the rotating shaft is inserted into the shaft hole. The steam valve is attached to the lower cover so as to rotate, and an elastic material is provided between the lower cover and the end face of the closed end of the exhaust pipe, and the elastic material is provided around the rotation axis. A container cover, wherein the exhaust pipe is provided with a sleeve extending from a closed end face thereof, and the sleeve is provided around the elastic material. The cover main body is provided with a storage tank for storing the steam valve, the storage tank is formed in a cylindrical shape having one end sealed and the other end opened, and an end face of an opening end of the exhaust pipe is provided in the storage tank. contact with an end surface of the closed end, the container cover according to claim 11 or 12 on the end surface of the closed end of the containing recess, characterized in that the exhaust hole for communicating the said steam passage and the exhaust pipe is provided. At least one waterproof tank is provided on the end face of the closed end of the storage tank, and at least one first waterproof annular portion fitted into the waterproof tank is provided on the end face of the open end of the exhaust pipe. The container cover according to claim 13 , characterized in that: 14. The container cover according to claim 13 , wherein at least one second waterproof annular portion extending toward an inner wall of the storage tank is provided on a side portion of the exhaust pipe. The cover body further includes a water discharge valve, a second storage tank that stores the water discharge valve, and a water discharge passage that communicates the water discharge valve with the outside, and the steam passage and the water discharge passage communicate with each other. container cover according to claim 11 or 12, characterized in that. The free rotating portion is a shaft hole provided at a sealed end of the exhaust pipe, the rotating mounting portion is a rotating shaft provided on the lower cover and fitted into the shaft hole, or the free rotating portion is a bearing provided at the open end of the exhaust pipe, the rotary mounting portion is provided on the cover body, the container cover according to claim 11 or 12, characterized in that a bearing bore for mounting the bearing. The sum of the volume of the closed space formed between the water-tight structure provided on the outer surface of the exhaust pipe and the inner wall of the storage tank is V0, and the sum of the volume of the closed space formed between the exhaust pipe and the inner wall of the storage tank is V0. The container cover according to claim 15 , wherein the total volume is V1, and V0 / V1∈ [0.5, 0.95]. 19. The container cover according to claim 18 , wherein at least one waterproof tub is provided on an end surface of the closed end of the storage tub, and the second waterproof annular portion is fitted into the waterproof tub. The length of the intake pipe is _{L 0,} the radius of the lower cover is _R, is L 0 /R∈[0.6,0.9], anti-friction layer is provided on the rotary mounting portion The container cover according to claim 19 , wherein the container cover is provided. The gravitational torque at which the weight member rotates around the free rotation portion is determined by the sum of the gravitational torque at which the intake pipe rotates around the free rotation portion and the friction torque with the cover body when the exhaust pipe rotates. container cover according to claim 11 or 12, characterized in that large. The weight mass _{m 1} of the member is less 10g or more and 50 g, the container cover according to claim 21 mass _{m 2} of the intake pipes, characterized in that 5g or more and 20g or less. Weight of the weight member is _{G 1,} the weight of the intake pipe is _{G 2,} claim, characterized in that the _{G 1 / G 2 ∈ [0.5,12} ] or [10] 22. The container cover according to 21 . The distance between the axis of the center of gravity and the exhaust pipe of the weight member is L _1, the distance between the axis of the exhaust pipe and the center of gravity of the intake pipe is _{L 2, L 1 / L 2} ∈ The container cover according to claim 21 , wherein the container cover is [2, 20] or [4, 15]. A container cover including a cover body, an upper cover and a lower cover located at upper and lower ends of the cover body, and the steam valve according to any one of claims 1 to 10 , wherein the cover body includes One end communicates with the opening end of the exhaust pipe, and the other end is provided with a steam passage communicating with the outside, and a rotation mounting part for attaching the free rotation part is provided in the container cover,
The cover body includes an upper cover, a lower cover, and a frame, wherein the frame is located between the upper cover and the lower cover, and a storage tank that stores the steam valve is provided, and the storage tank has one end. The exhaust pipe is formed in a cylindrical shape with the other end open, the end face of the open end of the exhaust pipe abuts on the end face of the sealed end of the storage tank, and the end pipe of the closed end of the storage tank has the exhaust pipe and the exhaust pipe. An exhaust hole communicating with the steam passage is provided, and an elastic material is provided between the lower cover and the end face of the closed end of the exhaust pipe. The elastic material is a spring, and the inner diameter of the spring is D∈. [10 mm, 20 mm], the total number of coils is n∈ [4, 12], the spring constant is k∈ [10 g / mm, 40 g / mm], and the mass is m ₃ ∈ [0.3 g, 1. 5 g], and Pipe is provided a sleeve extending from the end surface of the closed end, the container cover where the sleeve is characterized in that it is provided around the elastic member. The frame further includes a water discharge valve, a second storage tank that stores the water discharge valve, and a water discharge passage that communicates the water discharge valve with the outside, and the steam passage and the water discharge passage communicate with each other. The container cover according to claim 25 , wherein: It includes a container body and the container cover according to claim 11 or 12, wherein the container cover is the cover of the container body, the container liquid heating vessel, characterized in that it is connected to the inner wall and sealed to the body. The liquid according to claim 27 , wherein a sealing ring is provided between the lower cover and the cover main body, and the container cover is hermetically connected to an inner wall of the container main body by the sealing ring. Heating vessel. The container cover and the container body are connected by a locking structure, and the locking structure includes an extendable hook provided on the container cover and a lock tank provided on an inner wall of the container body. 28. The liquid heating container according to 27 .

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