JPS581423A - Electric pot - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric kettle, and the present invention relates to a heating part for heating the inflowing liquid with a heater, and a heating part for heating the inflowing liquid with a heater, in a liquid circulation path provided so that the upper and lower ends communicate with the inside of the container. An electric kettle with a simple structure that is equipped with a reverse +i-valve to prevent backflow into the container body and can efficiently and uniformly heat the liquid inside the container while circulating it through the liquid circulation path. The purpose is to provide

To explain the embodiment shown in FIG.
The upper end of the outer case 3 is connected by a shoulder member 4 made of synthetic resin, and the lower end of the outer case 3 is closed by attaching a bottom plate 5 made of synthetic resin. A lid 6 is provided on the shoulder member 4 to cover it, and its rear portion is pivotally connected 7 to the shoulder member 4 so that it can be opened and closed.

The lid 6 accommodates and holds a manual bellows pump 8 as a liquid processing pump that pressurizes and pushes out the liquid inside the container 1, and is operated by a pressing plate 9 exposed on the top surface of the lid 6. There is. A stopper 12 is attached to the liquid supply port 10 of the shoulder member 5 that communicates with the inner container 20 portion, and is seated by a flange portion 128 on the outer periphery and seals the inner container 2 via the backing 11 on the outer periphery of the inner container 20 portion. There is.

The plug body 12 connects an air supply passage I3 that communicates the discharge port 8a of the pump 8 with the inside of the inner container 2, and a liquid content discharge passage 14 that guides the liquid pressurized and pushed out by the pump 8 to the outside of the container body 1. Be prepared. The content liquid pouring path 14 is connected from the stopper 12 to the inner container 2.
An internal pipe 14a hanging inward and an external pipe 141) extending from the stopper j2 to the upper side of the container 1 on the shoulder member 4 are connected by a passageway 14d inside the stopper, and a spout at the tip of the external pipe 14b is formed. 14c is opened and protrudes downward from a through hole 15 at the bottom of the tip of the beak portion 4a that protrudes to one side along the external tube I4b of the shoulder member 4. The spout 14c has an air vent pipe 14θ for preventing splashing at the center of the ceiling. Reference numeral 16 denotes a lever-type locking member provided at the front of the lid 6, which engages with a locking portion 17 formed on the inner surface of the side wall of the shoulder beak 4a when the lid 6 is closed. At the same time, the lid 6 is locked in a closed state, and the pump discharge port 8a and the air supply passage 13 are maintained in a connected state via the backing 18.

Content? ? Between the i2 and the outer case 3, the lower end is connected 19 to the bottom of the inner container 2, the upper end is connected to the mouth of the inner container 2 20, and the upper and lower ends communicate with the inside of the inner container 2. A path 21 is provided. The circulation path 21 is provided with a liquid level display section 21a formed by a transparent standpipe 22 at the rising end thereof, and the display section 21a can be viewed from outside the container body 1 through a display window 24 having a transparent plate 23 attached to the front part of the exterior case 3. This makes it possible to observe. The inflowing content liquid flows from the connection 19 of the circulation path 21 to the bottom of the inner container 2 to the display section 21a.
A check valve 25 that prevents the liquid from flowing back into the tank and a heating section 27 that heats the inflowing liquid with a heater 26 are provided in this order. The heating section 27 includes a heater 26 on the outside of the metal tube 28.
This is a type of heating section of the so-called Kima kettle type, which is designed to efficiently heat a small amount of flowing liquid by wrapping it around the pipe.

Reference numeral 29 denotes a water stop valve element 30 for preventing the liquid content from flowing out when the air supply passage 13 falls over when the content liquid pouring passage 14 falls; and 31 indicates a mounting screw for the bottom plate 5, which is an inspection screw provided on the bottom plate 5; By tightening a closing plate 32 that closes the window 5a against a mounting leg 33 welded to the lower surface of the bottom of the inner container 2, the bottom plate 5 is attracted to the lower end of the outer case 3. 34 is a power supply connection port, which is of a magnetic plug type. 35 is a heat insulating material, which is wrapped around the outer periphery of the inner container 2.

When the content liquid is placed in the inner container 2, the content liquid also enters the content liquid circulation path 21 communicating with the interior of the inner container 2, and the liquid level is the same as that in the inner container 2. This liquid level is externally observed through the display window 24 in the display section 21a, so that the user can know the amount of the content liquid. A liquid quantity display plate 36 is provided on the back side of the display section 21a, so that the liquid level and the liquid quantity can be read.

When the heater 26 is energized, the content liquid flowing into the circulation path 21 is efficiently heated in the heating section 27 for a small amount of liquid, and reaches a boiling state instantaneously. Due to the pressure increase in the circulation path 21 in the heating section 27 at this time, the circulation path 21
An attempt is made to return the liquid inside to the inner container 2, but the check valve 25
As a result, the liquid flowing into the circulation path 21 is pushed up the circulation path 21 and flows from the connection 20 into the inner container 2. It will be returned within 2. Along with this return, the content liquid continuously flows into the circulation path 21 from the bottom of the inner container 2 through the connection 19 via the check valve 25, and is sequentially heated to a boiling state by the heater 26 in the heating part 27. Return to vessel 2.

As a result, the liquid in the inner container 2 is circulated through the liquid circulation path 21 and receives efficient instantaneous boiling type heating in the heating section 27, so that the entire amount quickly and uniformly reaches a predetermined temperature. Therefore, by turning on the liquid saver each time it reaches the lower limit of the predetermined temperature range and turning it off each time it reaches the upper limit, the heat retention function that keeps the content liquid within the predetermined temperature range can be achieved by simply heating the heater 26, and the display The part 21a allows the user to observe that heating is being performed by the state in which the content liquid rises in the circulation path 21 during heating (the higher the temperature, the more the gas-liquid mixed state is exhibited), while when heating is interrupted, the content liquid in the circulation path 21 rises. By stopping the rise, the amount of the content liquid is displayed.

Of course, the heater 26 may be turned on when hot water is needed and used simply to boil water to bring the liquid content to a predetermined temperature, or it may be used to heat the liquid at a predetermined temperature, or as shown by the imaginary line, the heater 26 may be turned on when hot water is needed, or it may be used to heat the liquid at a predetermined temperature. Used in conjunction with the heater 37 for heat retention □,
The temperature of the content liquid can also be maintained by using the heater 26 to raise the temperature to the upper limit when heated.

To prevent dry cooking in the event that the liquid content runs out,
It is sufficient to operate the temperature fuse 38 or the like at a temperature near the heating section 27, which reaches the highest temperature at the earliest stage, but the temperature-sensitive reed switch 39 is used to control the heater 26°37 to keep the liquid content within a predetermined temperature range. A thermostat 40 or the like may be attached to the bottom of the inner container 2 to sense the temperature of the content liquid without being affected by the temperature of the heating section 27.

\ The content liquid is poured out by operating the pump 8 in a known manner.

In Fig. 2, a switching cock 5 is installed at the upper end of the liquid circulation path 21.
A communication path 52 into the inner container 2 and a spout path 53 to the outside of the container body 1 are provided, which are selectively communicated by switching. In the cock 51, a slightly wide valve chamber 54 is formed at the upper end of the circulation path 21 in communication with the upper end, and the base of the communication path 52 is opened 52a on the side wall thereof, and the base of the spout path 53 is formed on the ceiling wall. The openings 53a are opened, and a valve body 55 that is moved up and down within the chamber 54 selectively opens the openings 52a and 53a.

The tip of the communication passage 52 is force-fitted into an opening 56 provided on the peripheral wall of the mouth of the inner container 2 and communicates with the inner upper part of the inner container 2, and the spout passage 53 is connected to the beak-shaped portion 4a of the shoulder member 4. along the upper side of the vessel body 1. The valve body 55 is a valve stem 55a.
is held in the through hole 57 of the ceiling of the spout passage 53 so as to be able to move up and down, and by applying a spring 58 between the upper end passive part 55b of the valve body 55a and the spout passage 53 from which it protrudes. The opening 53a should always be closed by being biased upward. Inside the lid 6, one end is pivoted 59 and the other end actuating part 60a is connected to the valve stem upper end passive part 55b when the lid 6 is closed.
An operating lever 60 is provided opposite to the operating lever 60, and an operating portion 60b of the lever 60 projects downwardly toward the upper surface of the lid 6. 61 is its protrusion hole. The lid body 6 has an inner container 2
The main body 6a has a trunk 6a that seals the mouth of the body, and a small hole 6b for preventing abnormal pressure increase is bored in the trunk 6a.

Normally, the valve body 55 of the cock 51 is in the upward position indicated by the solid line, and the upper end of the circulation path 21 is communicated with the interior of the inner container 2 via the communication 0 path 52. In this state, when the content liquid in the circulation path 21 rises due to heating, it returns to the inner container 2 and returns to the inner container 2.
The liquid inside is heated while being circulated. Next, when the operating part 60b is pushed down as shown in the imaginary line, the valve body 55 is pushed down via the valve stem 55a by the operating part 60a of the operating lever 60, and the upper end of the circulation path 21 is connected to the spout passage 5 as shown in the imaginary line.
Connect to 3. As a result, the heated content liquid rising in the circulation path 21 is led out of the container l through the spout path 53.

Therefore, in this embodiment, there is no need for a special pump for dispensing the content liquid, and the content liquid to be dispensed is transferred to the circulation path 2.
1.Since it has just been heated by an instantaneous water boiler in the intermediate heating section, it is advantageous for pouring out higher temperature contents, and it is possible to reheat the poured contents on a stove etc. before use. It will save you the trouble. Further, as shown in FIG. 3, the member 62 is short-circuited to a temperature-sensitive control member 62 such as a thermostat that turns on and off the heater 26 in the heating section 27 in the middle of the liquid path 21 in order to control the temperature of the liquid inside. A switch 63 is connected in parallel, and the switch 63 is turned on in conjunction with the changeover hook 51 being switched to dispense the content liquid, and keeps the heater 26 in the on state regardless of the action of the member 62, thereby discharging the content liquid. Measures the stability of pouring.

4 and 5, a rotary switching cock 71 is used to selectively connect the communication 0 passage 52 and the spout passage 53 to the upper end of the liquid circulation passage 21. cook 71
The valve body 72 has a valve shaft 7 that protrudes toward the shoulder member beak 4a side.
The valve body 72 can be switched between the solid line position and the imaginary line position in FIG. 4 by rotating the operating lever 73 at the projecting end 2a between the solid line position in FIG. 5 and the imaginary line position.

Reference numerals 74 and 75 indicate a stopper that restricts the rotation range of the operating lever 73, and 76 a click protrusion that provides slight resistance to changes in attitude of the operating lever 73 between the solid line position in FIG. 5 and the imaginary line position.

In FIG. 6, the operating lever 73 is positioned behind the opening of the spout 53b of the container body 1, and is pushed and operated by a container that receives the liquid to be poured. 73ij:
A pivot 81 is attached to the beak-shaped portion 4a, and a sector gear 82 and a pinion 8
3 and the valve shaft 72a, and the lever 73 is connected to the valve shaft 72a.
Normally, the valve body 72 is kept in a state where the circulation path 21 communicates with the communication path 52 by operating the spring 84 that rotates the valve body 72 in the direction away from the valve body 72 . As a result, when the lever 73 is pushed by the container, the valve body 72 is switched to communicate the circulation path 21 with the spout path 53, and the heated contents are poured out. , the liquid is injected into the container that is pushing the lever 73.

FIG. 7 shows an example in which the present invention is applied to an electric kettle in which the container 1 is made of a metal vacuum double container.
The inner container 91 is made of stainless steel with low thermal conductivity.
A vacuum heat insulating space 93 is formed between the outer container 92 which also serves as an exterior body, and can exhibit sufficient heat retention without the drawback of being vulnerable to shocks unlike vacuum double containers.

The content liquid circulation path 21 is installed vertically outside the container body 1 and is covered with a cover 94.
The display section 21a can be observed from the outside through the display window 94a. 95 is a transparent plate attached to the display window 94a. The bottom of the outer container 92 is integrally formed with a spacer portion 92a for receiving and positioning the bottom of the inner container 91, forming a single bottom portion 91a from which a portion of the bottom of the inner container 91 is exposed. - Mold bottom 91a
The lower end of the circulation path 21 is connected 19 to it. Further, the upper end of the circulation path 21 is connected 20 to the container-mold opening 91b formed by the inner container 91. This connection structure is made without affecting the vacuum property of the space 93 of the container 1.

The content of the liquid in a vacuum container can be satisfactorily heated from the outside. - Although it is possible to provide a thick wall section and heat from that point, it is possible to heat the liquid inside the vacuum container from the outside. This greatly impairs the heat retention function of a vacuum container.

However, in this embodiment in which the present invention is applied to a vacuum double container, the content liquid is heated while being circulated in the circulation path 21, which is unrelated to the vacuum insulation space 93 outside the container body 1. There is no possibility that the vacuum insulation space range of the vessel body 1 becomes small and the moisture retaining function deteriorates.

FIG. 8 shows the content liquid pressurizing pump 8 and the content liquid pouring path 14.
In an electric kettle equipped with a communication hole 101, the upper end of the content liquid circulation path 21 is formed at the bottom of the beak-shaped portion 4a of the shoulder member 4.
A branch pipe 104 is formed in the middle of the external pipe 14b of the content liquid pouring path 14 to be connected to the communication hole 101 in a detachable manner 103 and communicated with the upper end of the circulation path 21. 104 Rotating switching hook 10 at branch part
5 is provided, and its valve body 106 is rotated by an operating lever 107 provided at the external end of the valve shaft 106a, so that the upper end of the circulation path 21 is connected to the base of the external pipe 14b of the liquid content pouring path 14 and the internal pipe 1.
4a, and a temporary rice line state in which communication with the external pipe 14b at the upper end of the circulation path 21 is cut off via the branch pipe line 104, and the external pipe line 14b runs vertically. I'm trying to switch.

This embodiment has the advantage that the upper end of the circulation path 21 can be directly connected to the container body 1, especially the inner container.

FIG. 9 shows an electric kettle with a liquid circulation path 2I as shown in FIG. When the lid body 6 is closed, the switching cock 5 is connected to the bottom plate 111 of the body 6.
The operating rod 112 facing the passive part 55b of 1 is held movably up and down, and the operating rod 112 is attached to the press plate 9 that operates the pump 8.
A pushing portion 113 is provided for the movement.

As a result, when the press plate 9 is pushed down, the pump 8 is contracted to send air into the inner container 2 and pressurize the content liquid, while the operating rod 112 is pushed down and the valve body 55 changes from the solid line state to the imaginary line state. By switching, the upper end of the circulation path 21 is in communication with the spout path 53 and the content liquid can be poured out. Therefore, the content liquid can be poured out simply by pushing down the press plate 9, and when the press plate 9 returns, the circulation path 21 communicates with the communication 0 path 52, and the content liquid is heated while being circulated.

In addition to the pipes as in the embodiment, the liquid circulation path may include a liquid path formed between the two by abutting another plate member on the outer surface of the inner container constituting the container body, or in some cases. It is also possible to include a gutter-like part with an open upper part so that the rising liquid can flow into the container body.

According to this invention, the check valve and the heating part are provided in the liquid circulation path whose upper and lower ends communicate with the inside of the container, and the liquid amount display liquid path is configured to circulate the liquid inside the container. Since the purpose is to efficiently heat a small amount of liquid inside the container, the entire amount of liquid inside the container can be heated quickly and uniformly, even if the container is a vacuum double container. , the content liquid can be efficiently heated without narrowing the vacuum space area for heating the content liquid.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment, Fig. 2 is a sectional view of another embodiment, Fig. 3 is an electric circuit diagram, and Fig. 4 is a sectional view of a modified example.
Fig. 5 is an external side view, Fig. 6 is a sectional view of another modification, Fig. 7 is a longitudinal sectional view of another embodiment, Fig. 8 is a sectional view of another embodiment, and Fig. 9 is a sectional view of another modification. FIG. 7 is a cross-sectional view of yet another embodiment. 1... Container body, 2, 91... Inner container, 3... Exterior case, 92... Outer container, 4... Shoulder member, 6... Lid body, 8... Manual bellows Pump, 9...Press plate, 1
2... Plug body, 13... Air supply passage, 14... Content liquid pouring passage, 14a... Internal pipe, 14b... External pipe, 1
4c... Outlet, 19.20... Connection, 21...
Content liquid circulation path, 2]a...Liquid amount display section, 25...Check valve, 26.37...Heater, 27...Heating section, 5
1,71,105...Switching cock, 52...Communication 0
path, 53... spout path, 102, 103... connection,
104...branch pipe

Claims (1)

[Claims] (1) A liquid circulation path is provided, the lower end of which communicates with the bottom of the vessel, and the upper end of which communicates with the bottom of the vessel; An electric kettle (2) liquid circulation path is characterized in that a reverse valve that prevents the inflowing liquid from flowing back into the container body from the communication part and a heating part that heats the inflowing liquid with a heater are provided in sequence. The electric kettle (3) according to claim 1, wherein the rising north corner is also used as a liquid level display section, has one end located at the bottom of the container body and the other end located at the upper part of the container body. (4) The electric kettle according to claim 1 or 2, which is connected to the peripheral wall of the container so as to communicate with the container body, is a liquid pressurizing pump that pressurizes and pushes out the liquid content. and a content liquid discharge path that guides the content liquid poured out by the pump to the outside of the container,
The upper end of the content liquid circulation path is connected to a part of the content liquid dispensing passage via a switching cock, and the content liquid dispensing passage also serves as a part of the content liquid dispensing passage so that it communicates with the inside of the container by switching the switching cock. Electric pot (5) as described in paragraph 1 or 2
The content liquid circulation path is connected to its upper end so that the communication path into the container body and the outlet path to the outside of the container body can be selectively communicated with one of them by switching the switching cock. The electric pot (6) according to claim 1 or 2, which can be used for both purposes, is equipped with a liquid processing pump that pressurizes the liquid and pushes it out to the liquid pouring path. Claim 1, wherein the electric kettle according to claim 5 is equipped with a heater that heats the liquid inside the container, in addition to a heater in a heating section in the middle of the liquid circulation path. The electric kettle (8) according to claim 7, wherein the heater in the heating part in the middle of the internal liquid circulation path is for boiling water, and the other heater is for keeping warm.