JPS6249049B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating cooker that can selectively perform rice cooking, porridge cooking, and stewing.

As is already known, in this type of cooking, rice cooking is controlled by a temperature switch, porridge cooking is controlled by a timer, and simmering is accompanied by a timing operation by setting the timer's time setting axis at a specific position. It is configured to be controlled by internal contacts. The power supply circuit of this product is opened and closed by a temperature switch, so even when cooking porridge or simmering, which is not related to the temperature switch, the power can be turned on by operating the timer's time setting axis and the temperature switch. This has the disadvantage that the operation has to be performed twice, resulting in poor operability.

The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to make it possible to set only the temperature switch when cooking rice, and to set only the time limit setting axis of the timer when cooking porridge and simmering. It is an object of the present invention to provide a heating cooker that can be operated only once and has improved operability.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a main body with an operation panel 2 attached to one side, and a pot 3 removably provided inside the main body. Reference numeral 4 denotes a temperature switch, which, as is well known in electric rice cookers, includes a temperature detection part 6 that detects the temperature of the pot 3 and rotates the set lever 5 to return, and switch parts 7 and 8 that are interlocked with the set lever 5. It is equipped with When the set lever 5 is set to the rice-cooking position, the switch parts 7 and 8 are opened.
The circuits between c ₁ and a ₁ and between c ₂ and _{a 2} are turned on. Reference numeral 9 denotes a timer, which is equipped with a timer motor 10 and cam switches 11 and 12. When the setting dial 14 directly connected to the time setting shaft 13 is set to the timekeeping operation area, that is, the porridge cooking area A1, the cam switch 11
The contact between C and A is turned on during the timekeeping operation, and
Turn the setting dial 14 to a specific position other than the off position A0,
That is, when the simmering position A2 is set, the cam switch 11 maintains the contact C-B on and the cam switch 12 off without any timekeeping operation, and when the setting dial 14 returns to the off position A0, the cam switch 11 remains in the OFF position. As shown by the solid line in FIG. 3, the neutral position is taken, and the cam switch 12 is in the on state. 15 is a plug, 16 is an alarm, 17 is a first indicator lamp that displays the porridge cooking and simmering status, 18 is a second indicator lamp that displays the rice cooking status, 19 is a main heater, and 20 is an auxiliary heater. .
Here, the main heater 19 and the auxiliary heater 20 constitute a heat source heater 21 as a whole. Further, 22 is a rice cooking power supply line, 23 is a common power supply line, and 24 and 25 are neon lamps, which are the indicator lamps 17 and 1.
8 protection resistance.

Next, the operation of the above configuration will be explained.

(i) Cooking rice To cook rice, set the set lever 5 to set the switches 7 and 8 to ON between contacts C ₁ - _{A 1} and ON between contacts C ₂ - _{A 2} . At this time, the setting dial 14 is at the off position A0, so the cam switch 11
is in the neutral position and the cam switch 12 is turned on. Therefore, power is supplied to the rice cooking power supply line 22 through the contacts c ₁ -a ₁ of the switch part 7, and the main heater 19 is energized to start cooking rice. In this case, the second indicator lamp 18 is connected to the low resistance auxiliary heater 2 from point P1.
0, timer motor 10 and the cam switch 12
A voltage is applied through the lamp to turn on the lamp, but the timer motor 10 is not driven. Further, the first indicator lamp 17 is not turned on because the impedance of the timer motor 10 is low. Now,
When rice cooking progresses and the pot 3 reaches the cooked state, the temperature detection section 6 detects this and returns the set lever 5 to the non-set state, so that the switch sections 7 and 8
is turned on between contact pieces c ₁ and b ₁ and turned on between contact pieces c ₂ and b ₂ . As a result, the main heater 19 is cut off and the rice cooking operation is completed.

(ii) Cooking porridge When cooking porridge, leave the set lever 5 in the non-set state, that is, the contact pieces c ₁ - b ₁ and c ₂ -
b ₂ Keeping it on, set the setting dial 14 of the timer 9 to the porridge cooking area A1, which is also the time limit setting area. Then, the cam switch 11 turns on between the contacts C and A, and the cam switch 12 remains on, so power is supplied to the common power supply path 23 through the contacts c ₁ and b ₁ of the switch section 7, and from there. The main heater 1 is connected to the main heater 1 through the contact piece C-A of the cam switch 11.
9 is applied to generate heat to start cooking the porridge, while the timer motor 10 starts to be driven from point P1 by the current passing through the auxiliary heater 20, the timer motor 10, and the cam switch 12, and starts timing operation. The first indicator lamp 17 is turned on by the high voltage across the terminals of the timer motor 10 as the cam switch 12 turns on. After this,
When the set time has elapsed, the setting dial 14 returns to the off position A0, and the cam switch 11 becomes neutral, so that the main heater 19 is cut off together with the timer motor 10, completing cooking of porridge.

(iii) Stew When boiling, leave the set lever 5 in the non-set state and turn on the timer 9 as described above.
Set the setting dial 14 to the stew position A2. Then, the timer 9 is turned on between contact pieces C and B, and the cam switch 12 is turned off. On the other hand, both contacts c ₁ -b ₁ and c ₂ -b ₂ of the temperature switch 4 remain on. Therefore, the power is supplied to the common power supply line 23 via the contact piece c ₁ - b ₁ of the switch part 7, and from there, it is further connected in series to the auxiliary heater 20 and the main heater 19 via the contact piece C-B of the cam switch 11. is applied to generate heat, which causes simmering.
In this case, since the cam switch 12 is off, the timer motor 10 is not energized and does not perform timekeeping operation. Also, at this time, the first indicator lamp 17 lights up because the switch part 8 is turned on between the contacts c ₂ and b ₂ .

(iv) Abnormal operation prevention function If the set lever 5 is operated to set the temperature switch 4, both contacts c ₁ - _{a 1} and c ₂ - _{a 2} are turned on, and the setting dial 14 of the timer 9 is set to the oyster range. When an abnormal operation such as setting A1 or simmering position A2 is performed, current flows from the rice cooking power supply line 22 through the cam switch 11, the alarm 16, and the contact pieces _A2 - _C2 , and as a result, the alarm 1
6 sounds to notify abnormal operation.

In the present invention, the timer may be of a spring-driven type, and an alarm may be provided as necessary.

As is clear from the above description, the present invention is equipped with a temperature switch and a timer to obtain rice cooking, porridge cooking, and stewing functions, and when cooking rice, only the temperature switch needs to be set.
When cooking and simmering porridge, only the time setting axis of the timer needs to be set, and each function only needs to be operated once, resulting in excellent operability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway side view, FIG. 2 is an enlarged front view of the operation panel, and FIG. 3 is a wiring diagram of the control circuit. In the figure, 3 is a pot, 4 is a temperature switch, 9 is a timer, 13 is a time setting axis, 21 is a heat source heater, 22
is the rice cooking power supply line, 23 is the common power supply line, A0 is the off position, A1 is the porridge cooking area (timekeeping operation area), A2
is the stew position (specific position).

Claims (1)

[Claims] 1 A temperature switch that is installed to detect the temperature of the pot and supplies power to the heat source heater via the rice cooking power supply line in the set state and to the common power supply line in the non-set state, and a temperature switch that supplies power to the heat source heater via the rice cooking power supply line in the set state and supplies the power to the common power supply line in the non-set state, and the power supply is turned off until the end of the timing operation. and a timer that supplies power to the heat source heater from the common power supply path and supplies power to the heat source heater from the common power supply path without performing a timing operation when the time setting axis is set to a specific position other than the off position. Heating cooker.