JPS59164020A - 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 (Technical Field) The present invention relates to an electric hot water bath, such as a jar pot, which has a manual pump built into the top lid, and operates the manual pump to pump air and pour out the liquid in the container to the outside. It belongs to the boiler.

(Prior Art) In general, in order to bring out the taste and aroma of tea, coffee, black tea, etc., it is necessary to remove the unique taste caused by limescale, etc. in tap water, and there is no means to remove such a unique taste. It is widely known that tap water can be boiled, and a boiling type is desired even in electric water heaters such as jar pots.

At present, various boiling type water heaters have been proposed as this type of water heater, but in all of them, it has been difficult to put them into practical use with a structure for releasing steam during boiling.

Generally, in electric water heaters such as jar pots, a manual pump is installed inside the top lid, and by suppressing the manual pump, air can be pumped into the container and the liquid in the container can be poured out to the outside. If the liquid in the container is heated to boiling with this configuration, the steam generated by boiling will enter the manual pump through the air inlet and fill the inside, resulting in Manual pumps are molded from synthetic resin materials such as polyethylene resin or polypropylene resin and are required to withstand tens of thousands of expansions and contractions, which has the disadvantage of accelerating deterioration and shortening the lifespan. I had to worry about this.

(Object of the present invention) The present invention has been made in view of the above points, and includes forming a steam release passage inside the jacket that communicates the inside of the container with the outside.
By releasing the steam inside the container to the outside without passing it through the manual pump, it is possible to prevent the manual pump from deteriorating due to steam as in the past.

(Example) Examples of the present invention shown in the drawings will be described in detail below.

First, in the embodiment shown in the first figure, the electric water heater includes a container 1 for storing liquid, an exterior body 2 for storing the liquid, a removable inner lid 3 that is attached to the top opening of the container I, and an O. The inner lid 3
It is roughly divided into a -I-lid 4 which can be opened/closed and detached from the top, and is constructed as follows.

The container 1 is made of stainless steel, for example, and has a backing 5 fitted to the upper end flange, a mounting ankle 6 fixed to the outer bottom surface, and a heater 7 wound around the outer periphery of the lower part.

In addition, a pair of joints 8 are installed on the outer circumferential wall of the container 1 at appropriate intervals vertically, and a water level gauge 9 made of a transparent tube is installed between the joints 8.
The water level gauge 9 is connected to the inside of the container l by supporting the water level gauge 9, so that the water level in the container l can be displayed by the water level gauge 9.

The exterior body 2 includes a cylindrical outer case 10, a bottom cover 11 that fits into the lower end opening of the case 10, and an upper cover 12 that fits into the upper end opening of the outer case 10.

The outer peripheral case IO has a vertical long hole formed in a proper position on the side wall, and a display panel I3 having a display window 14 made of a transparent plate is fitted into this long hole. 9
The position is set to face the. The bottom cover 11 is made of a synthetic resin molded product, and a plug cover part 15 is integrally molded at a suitable position on its outer periphery, and a plug pin 6 is installed in this cover part 15. Therefore, this plaque pin 16
A plug (not shown) is connected to the cover 12, which supplies power to electrical components such as the heater 7.The L cover 12 is molded of synthetic resin and has a ring shape, and has an exit hole 1 at a suitable location on its outer periphery.
7, and a butterfly portion 18 having an L-shaped cut groove 19 at a position opposite to the projection hole 170 is integrally formed.

The exterior body 2 having such a structure is the inner peripheral part of the cover 12.
One end flange of the container I is placed on the L surface via the puff king 5, and the mounting angle 6 is fixed to the bottom cover 11 via the mounting legs 2°, thereby fixing the container 1 to the interior.

The mounting leg 20 is formed by bending a single sheet metal, and the container side mounting plate portion 2 is located in the middle and comes into contact with the mounting angle 6.
1. Container side mounting plate part, consisting of an upright part 22 located on both sides 1111I of the part 21 and bent downward, and a bottom cover side attachment piece 23 located at the lower end of the upright part 22 and bent laterally. 21
has an insertion hole 24 for a screw (not shown) to be screwed into the mounting angle 6, and a threaded hole 25 for a screw (not shown) inserted through the bottom cover 11 to be screwed into the bottom cover side mounting piece 23. form respectively. Further, two support pieces 26.26 are formed by cutting and bending the ends of the container-side mounting plate portion 21 so as to face each other, so that the support pieces 26.26 have appropriate elasticity. At the distal ends of both support pieces 26 and 26, notches 27 and 27 with narrow openings are formed, respectively, for attaching parts. Therefore, the mounting leg 20 is attached to the mounting angle 6 and the bottom cover 11.
The container 1 and the exterior body 2 are fixed to each other by being attached with screws to the support pieces 26 and 26, respectively.
Thermostano I・28 using the notch 27.
By supporting the temperature fuse 29, the mostat 28 and the temperature fuse 29 are brought into close contact with the outer bottom surface of the container l by the elasticity of the support pieces 26.

The inner lid 3 is made of stainless steel, for example, and closes the opening of the container 1 by contacting the outer periphery with the backing 5''2.
A heir 32 made of a synthetic resin molded product is fixed to the center of the upper surface with a screw 33.

The eldest child 32 has an air passage 34 communicating between the inside and outside of the inner cover 3 and a hot water supply passage 35 communicating between the inside and outside of the inner cover 3 internally. has openings on the bottom and side surfaces respectively. One end of an air supply pipe 36 is connected to the open end of the lower surface of the air passage 34, one end of a pumping pipe 37 is connected to the open end of the lower surface of the hot water supply passage 35, and one end of a hot water supply pipe 38 is connected to the open end of the side surface. It is set up.

The air supply pipe 3G has a discharge side end extended to a position above the required water supply level A, and a diaphragm 39 is arranged at the discharge side end, and a small hole 4 is formed in the peripheral wall to be located above the highest water level B.
form 0. 1. The diaphragm 39 is located at a level slightly lower than the required water supply level A (to the extent that the vibration is not hindered by hot water), and vibrates due to air circulation to generate sound.
It constitutes a notification means. In addition, the second pipe 37 is the suction (1t
The l+ end is located near the inner bottom of the container 1, and an air inflow hole 4I is formed in the peripheral wall so as to be located above the required water level A.

The outer end of the hot water supply pipe 38 projects outward through the outlet hole 17 of the upper cover 12, and together with the hot water passage 35, the pumping pipe 37, etc., forms an outlet path for the internal liquid. A ball valve 42 is housed in the hot water supply passage 35 in the middle of the pouring passage, for example, to close the passage and prevent liquid from flowing out when the pot falls over.

The upper lid 4 has an outer shell composed of a lid main body 43 and a lid cover 44 that closes this lower opening, and has a shaft 4 fixed to the lid main body 43.
A hook lever 46, which is pivotably mounted to open and close freely by fitting the hook lever 5 into the cut groove 19 of the hinge part 18, and which is rotatably supported by the lid main body 43 and projects the operation button 47 outward, is attached to the upper cover. 1
It is locked in the closed state by engaging with the second locking member 48 .

2. A bellows-shaped manual pump 49 is installed between the lid main body 43 and the lid cover 44 with the air intake port 50 facing above the top surface of the lid main body 43 and the air supply port 5I facing below the bottom surface of the lid cover 44. This pump 49 is equipped with a lid cover 1 on the air inlet 51 side.
44, and is constantly biased in the direction of expansion by a built-in splinter 52.

The pump 49 communicates with the air passage 34 by press-contacting the air inlet 51 to the upper surface of the eldest child 32 via the backing 51a when the upper lid 4 is closed.
The backing 51a is fitted into the air supply port 51 of the pump 49.

The push button 53 is for compressing the pump 49, and is housed in a recess 54 on the upper surface of the lid main body 43 so as to be freely protrusive and retractable, and is always pushed in the exit direction (= The push button 53 has a cylindrical portion 57 that loosely fits into the outside of the intake port 50 of the pump 49 on the back side so as to create a small gap. The cylindrical part 57 has its tip facing the backing 58 attached to the pump 49, and the steam release passage 59, which is always separated from the backing 58, is connected to the inside of the upper lid 4 by a pipe or the like. It is a passageway with one end facing the outside of the top cover 4 and the other end facing the pump 49.
The air inlets 5 of the steam release passage 59 are opened at the air inlets 51 of the steam release passage 59, respectively, to communicate the inside and outside of the container 1.
A pump 4 is connected between the side end (inner end) of the first part and the inside of the pump 49.
A valve device 60 is provided that can close the steam release passage 59 side when the pump 49 is operated, and close the pump 49 side when the pump 49 is not operated, especially when the pump 49 is boiling. Either close the pump 49 (Ill) or close the pump 49 side to r7 due to the vapor pressure during boiling.
Any configuration may be used as long as the steam release passage 49 side can be closed by the air pressure pumped when the pump 49 is operated.

(Operation of Example) Now, with water injected into the container 1 to the maximum water level, the inner lid 3
- When the lid 4 is closed one after another and the heater 7 is turned on, the water in the container 1 is heated and its temperature rises, and soon it starts to boil. The steam generated during this boiling flows from the small hole 40 through the air supply pipe 36, air passage 34, and air supply port 51 into the steam release passage 59, and exits from this outer end. The device 60 prevents entry into the pump 49 and does not cause the pump 49 to deteriorate.

After boiling, the heater 7 is controlled by the thermostat I-28K, for example, by artificially switching the circuit.
It is kept warm at a predetermined temperature.

Therefore, when pouring out the hot water in the container 1, first press the push button 5.
3 against the spring 55 to bring the tip of the cylindrical portion 57 into pressure contact with the backing 58 to seal the intake port 50 side, and by roughly pushing down the push button 53, the pump 49 is pressed against the spring 52. Compression operation is performed against the pressure. 7. Valve device i"? 60 is the steam release passage 5 by air pressure.
9 side is closed and the air inside the 1,35 pump 49 is sent to the air supply 11:]
The container 1 passes through the air passage 34 of the 5L inner lid 3 and the air pipe 36.
The hot water is pumped through the pipe 37, increasing the internal pressure.
The hot water is poured out from the hot water supply passage 35 through the hot water supply pipe 38 to the outside. When the push button 53 is released, the push button 53 is returned by the spring 55 and the cylindrical portion 57 is separated from the backing 58, while the pump 49 is expanded and restored by the spring 52 while sucking air through the intake port 50.

The pouring operation, that is, the compression operation of the pump 49 as described in "-" can be easily performed with a small force by providing the small hole 40 in the peripheral wall of the air pipe 36 at a position above the furnace high water level B. That is, if there is no small hole 40, the air pipe 36
The diaphragm 39 inside the device creates a large resistance and requires a large operating force, but by providing an escape route in the form of a small hole 40, the above-mentioned drawbacks are solved.

As a result, hot water is repeatedly poured out until the water level in the container l falls to the required water supply level A, and in this state, the pump 49
When the water is compressed, the diaphragm 39, which is slightly above the water level A and exposed above the hot water surface, vibrates due to the pressurized air from the pump 49 without being disturbed by the hot water, and generates sound. This sound lets you know that it's time to refill water. On the other hand, since the air inflow hole 41 of the pipe 37 is also exposed above the hot water surface during pumping, a part of the air pumped from the pump 49 directly enters the pumping pipe 37 from the air inflow hole 41, resulting in the amount of hot water poured out. This results in an extreme decrease in the amount of water being poured out, and this decrease in the amount of water poured out also allows you to know when it is time to supply water.

The air pipe 36 may be omitted in this embodiment.

(Other Embodiments) In the embodiments shown in FIGS. 2 and 3, this embodiment
The push button 53 is always urged upward and in the circumferential direction by a spring 61, and the push button 53 is locked so that it cannot be pressed when the "stop" display matches the index 62, and the push button 53 is rotated until the "out" The electric water heater is configured such that the pump 49 can be compressed only when the display matches the index 62, and the valve device i! responds to the push button 53. "ff163 is provided in the steam release passage 59. This valve device 63 is
When the "Stop" display and the index 62 match, the projection 53a of the push button 53 opens the pump, and the push button 53 is rotated to release the pump 4.
It is blocked when the operation moves to step 9.

In this embodiment, it is necessary to provide the pump 49 with a check valve 64, a resistor, etc. to prevent steam from entering the pump 49.

In another embodiment, a valve device for switching between the pump 49 side and the steam release passage 59 side is provided, and this valve device is operated by pressing the button 5.
It is also possible to switch in conjunction with 3.

Further, the steam release passage may be provided independently from the air supply passage from one pump to the inside of the container.

In addition, the present invention is not limited only to the embodiments described above and shown in the drawings, and it is of course possible to carry out the invention with appropriate modifications within the scope of the gist. (Effects of the present invention) According to the present invention, since the steam at boiling is released to the outside without passing through the manual pump, deterioration of the manual pump due to steam can be prevented, and furthermore, by blocking the steam release passage when the manual pump is operated, liquid It has no adverse effect on pouring and is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional configuration diagram showing one embodiment of the electric water heater of the present invention, FIG. 2 is an external view showing the same embodiment, and FIG. 3 is a schematic cross-sectional configuration diagram of the main parts thereof. 1: Container, 4: Upper lid, 49: Pump, 59: Steam release passage, 60 and 63: Valve device.

Claims (1)

[Claims] 1. It is equipped with a container for storing liquid, a heater for heating the liquid in the container, and a top lid with a built-in manual pump, and the liquid in the container is pumped by pumping air into the container by operating the manual pump. In a device that pours out to the outside via a spouting passage, a steam release passage is formed inside the top lid to communicate between the inside of the container and the outside, and this steam release passage is equipped with a valve device that closes in response to the operation of a manual pump. An electric water heater characterized in that the steam in the container is discharged to the outside without passing through the manual pump when the manual pump is not operated.