JPS6156614A - 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] (b) Industrial application field The present invention relates to an electric water heater with a boiling function.

(Explanation) Conventional technology A water heater called an electric kettle heats water with a heater to boil water, but the end temperature of boiling water is about 5°C to about 95°C, and it does not reach the boiling temperature. For example, there was a drawback that it was not possible to sterilize milk, etc.The reason for this is that the thermostat is fixed to the bottom wall of the container that stores water, but in order to reach the boiling temperature, the OFF setting temperature must be changed to the boiling point. Near temperature (98-100℃
). However, this kind of vibe,
Thermostats using barrels take about 3 seconds to reach the OFF setting temperature.
~5"C variation, for example 100℃ at the time of design
Assuming that the OFF setting temperature is set, if there is a slight deviation of 1°C on the positive side, the heater will not turn off even if the boiling temperature is reached and the boiling state will continue and the temperature of each part of the appliance will rise. However, the synthetic resin part in particular melted and was extremely dangerous. Also, if there is variation on the negative side, the thermostat will turn off without reaching boiling point V3A degrees.
F operation and the desired purpose could not be achieved.

For these reasons, it is said that it is difficult to accurately detect the boiling temperature with a thermostand fixed to the bottom wall of the container.

Therefore, as a method of accurately detecting the boiling temperature, a method of detecting the steam temperature can be considered, for example, as shown in Japanese Utility Model Application Laid-Open No. 59-101930. With this configuration, a thermistor is used to detect the steam temperature, and although the boiling temperature can be detected accurately, it requires a complicated electronic circuit and is expensive. Furthermore, although the method of detecting steam temperature using a thermostat is inexpensive and easy to maintain and inspect, it is necessary to use a non-return type that does not automatically return once a boiling state is detected.

However, with a non-resetting type thermostat, you have to operate the boiling start button every time you want to boil and set it to a boiling state, and if you forget to set it, it will not boil at all. lIl! lI
Not even one was done.

(c) Problems to be Solved by the Invention The present invention automatically brings water to a boil when boiling water.

(d) Means for solving the problem A case for storing a container equipped with a heater, a lid that can be opened and closed at the top of the case, and a lock that allows the lid to be locked and opened. A lock button with a mechanism is provided on the top of the container or on the lid, and operates in conjunction with the lock button when the lid is locked, causing the heater to generate a high amount of heat and generate heat. means consisting of a non-returnable thermoshund for stopping or reducing the calorific value to a low value.

(E) Function The present invention locks the lid of the container with the mouth button when the container is closed, and activates the non-returnable thermostat in conjunction with the lock button, causing the heater to generate a high calorific value and generate heat, resulting in a boiling state. do.

(f) Example Embodiments of the present invention will be described based on the drawings.

(1) is a container equipped with a heater (2) for boiling water on the outer wall of the bottom, and water is poured into the container through an opening (3) provided at the top and stored therein. (4) is a cylindrical case that houses the container (1); (5) is a ring frame that fits and fixes the side edges of the openings of the container (1) and the case (4); (6) is a A non-resetting thermostat provided above the container (1),
The - side is tightly fixed to the other side of the guide tube (7) with its side facing into the container (1). Said non-returnable thermostat <6)
The OFF setting temperature is set between about 80 DEG C. and 90 DEG C., and as shown in FIG. 3, a set button (8) is provided and the heater (2) is connected in series. (9) is a dispensing cover that houses the dispensing vibrator <10) fixed to the side wall of the case (4), and 11) is an inner lid that closes the opening of the container (1), with one end attached to the top surface. The pouring pipe (10
), and a suction pipe (13) that communicates with the pipe and has its tip open at the inner bottom of the container (1) is provided on the lower surface. (14), (1
4) is a lock button provided in the spouting cover (9), the upper part of each of which projects upward from the spouting cover (9), and a locking mechanism in which a locking claw (15)<15) is integrally molded. (1
6) and a spring (17) is provided so that the lock buttons (14) (14) always protrude from the outside of the spouting cover (9), and the locking claws (15) (15) are always on the outside. It is gaining momentum as it expands. <18) is a summer winding spring which is pivotally supported approximately at the center, has one end pressed against the lock button (14>), and the other end pressed against the front/throat button (8).

(19) is a container (1
) is a lid body that covers the top surface of the inner lid (11
) for pumping air into the container (1) through a pump (20
) and the pressing body (21), upper plate (22) and lower plate (23)
). As shown in FIG. 2, the upper plate (22) has a locking groove (24>(2)
4).

(25) is a safety device installed on the outside (Wi wall) of the container (1) to prevent dry firing, and (26) is a non-returnable thermos valve (6) installed on the outside wall of the container (1). The heater (27) is a base fixed to the lower part of the case (4).

Next, the operation will be explained. Now, store water in the container (1), cover the opening of the container (1) with the inner lid (11), and close the top surface of the container (1) by rotating the lid body (19).
- When plasticized, the locking groove (24>(24) of the upper plate (22) engages with the locking claw (15) (15). At this time, the locking claw (15)
5) (15) moves slightly inward to press one end of the coiled spring (18) as shown in Figure 3, and the other end presses the set button (8) to activate the non-returnable thermostat (6). Turn it on and energize the heater (2).

As shown in Figure 5, the temperature of the water in the container (1) (solid line a) gradually rises due to the heat generated by the heater (2), and when it reaches almost boiling temperature, a large amount of generated steam flows into the guide tube (7). When the temperature near the non-returnable thermostat (6) reaches the OFF set temperature of about 90°C, the thermostat detects the steam temperature (dashed line b) and turns 0FFt to 1-(
2) and the heater (26) are connected in series, the amount of heat generated decreases, and a heat-retaining state is achieved.

When the above-mentioned non-returnable thermostat (6) is turned off, the set button (8) is configured to protrude outward against the helical spring (18).

In addition, in the present invention, after boiling is detected, the amount of heat generated is reduced to a low value to maintain heat, but the heat generation of all heaters may be stopped, or the lock button and the locking claw may be separate bodies. .

(g) Effects of the Invention As mentioned above, the present invention allows the OFF setting temperature of the non-resetting thermostat that detects the temperature of steam when a large amount is released during boiling to be set to a relatively rough value, so the structure is simple and inexpensive. A thermostat can be used. That is,
Even if the OFF temperature slightly deviates to the plus or minus side, the boiling state can be accurately detected. especially,
Since the non-returnable thermostat is activated in conjunction with the lock button that locks or opens the lid, the water automatically enters the boiling state when boiling water.
When water is refilled in the container during subsequent warming, the non-returnable thermostat is activated again by the lock button when the lid is opened and closed during refilling, and the water can be brought to a boiling state.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the electric water heater of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1 showing the locked state of the lid body and the locking mechanism, and No. 3'tsA shows the lock button and the locking mechanism. FIG. 4 is an electric circuit diagram, and FIG. 5 is a measurement diagram showing changes in water temperature and steam temperature. (1)... Container, (2)... Heater, (3)...
・Opening, (4)...Case, (6)...Non-returnable thermostat, (14) (14)...Lock button, (16)...Locking mechanism, (19)...・Lid body.

Claims (1)

[Claims] (1) A container equipped with a heater to store water, a case for storing the container, a lid that can be opened and closed provided on the top of the case and covers the top of the container, and this lid covers the top of the container. A lock button has a locking mechanism that maintains the locked state when the container is closed and allows the lid to be opened during operation, and a lock button that is provided above the container or on the lid to stop or reduce the heat generation of the heater when the container boils. The lock button and the non-returnable thermostat are linked to each other, and when the lid is locked by the locking mechanism, the non-returnable thermostat is activated, causing the heater to generate a high amount of heat. An electric water heater characterized by: