JP3497049B2 - rice cooker - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separate type rice cooker in which a jar portion having an inner pot or the like can be detached from a base portion having a gas burner or the like.

[0002]

2. Description of the Related Art In a rice cooker, a jar part having an inner pot is detached from a base part having a gas burner and a power cord so that the cooked rice can be easily carried to a table or the like. There is a detachable type in which only one can be moved separately. In addition, in this jar, an operation unit equipped with a rice cooking switch for igniting the gas burner,
A display unit for displaying the operating state such as the current time is provided while keeping warm, and in the fixed position mounting state of the jar unit, the connection terminals provided on the jar unit and the base unit are electrically connected to each other. The operating state is set by the input to the operation unit.

[0003]

By the way, in such a rice cooker, when adjusting the governor provided in the gas burner for gas conversion, etc., the upper jar is removed to expose the gas burner, and the governor is adjusted while burning the gas burner. Will be done. However, since the jar part provided with the operation part is removed and input from the operation part is not possible, connect it to the connection terminal on the base part side using a jig for ignition and input the gas burner by input operation to the jig. Burning. Further, if the rice cooker has a mode in which a hook switch is provided on the base side to confirm the placement of the jar, a weight or the like for turning on the hook switch without the jar is also required. Therefore, due to these jigs and the like, maintenance such as gas conversion takes time and labor is poor.

Therefore, an object of the invention as set forth in claim 1 is to provide a rice cooker in which the governor can be easily adjusted without using the jig or the like and the workability of maintenance is improved.

[0005]

In order to achieve the above object, the invention according to claim 1 provides an ignition switch in the base portion, and controls by turning on the ignition switch.
The part is a rice cooker capable of burning the gas burner for a predetermined time with the jar part removed. In addition to the object of claim 1, the invention according to claim 2 is to turn off the ignition switch before turning on the ignition switch in order to eliminate a problem caused by forgetting to turn off the ignition switch or an ON failure. The state is confirmed, and only when the state is confirmed, the gas burner can be burned. Further, in addition to the object of claim 1 or 2, the invention according to claim 3 eliminates a problem caused by an erroneous ON operation of the ignition switch or an ON failure of the ignition switch. A timer means for a predetermined time is provided before combustion, and the gas burner can be burned only when a desired signal is input within the count of the timer means. Further, in addition to the object of claim 3, the invention according to claim 4 provides the desired signal input to the base portion so that workability is improved in a rice cooker provided with a hook switch, It is obtained by pushing in a hook switch that is turned on when the jar portion is placed at a fixed position.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a schematic view of the rice cooker, rice cooker 1
Is composed of a lower base portion 2 and a jar portion 3 mounted on the base portion 2 at a fixed position. First, in the base part 2,
A gas burner 5 provided with three electromagnetic valves 4a to 4c is provided in the gas flow path, and a controller 6 for controlling these is provided with an insertion plug 7 for obtaining a commercial power source and a storage battery 8 as a secondary power source, respectively. There is. On the other hand, in addition to the inner pot 9 and the lid 10, the jar unit 3 has an operation unit 11 for inputting operation instructions such as rice cooking, heat retention, and timer rice cooking, and a display unit for displaying the current time, cooking rice, warming, etc. It has twelve. Further, connection terminals 13a and 13b are provided on the upper surface of the base portion 2 and the lower surface of the jar portion 3, respectively, and when the jar portion 3 is mounted on the base portion 2 at a fixed position, both connection terminals 13a and 13b are electrically connected. They are electrically connected to each other so that electric signals can be delivered between the base portion 2 and the jar portion 3 for power supply and temperature control. Further, 14 is a bottom sensor for temperature detection which is located at the bottom of the inner pot 9 when the jar portion 3 is set, and 15 is a lid 10.
A lid sensor for temperature detection, also installed in
Is a shuttle switch that is turned on when the jar unit 3 is set on the base unit 2. The detection signals are input to the controller 6, respectively. Reference numeral 17 is an ignition electrode. Therefore, the rice cooker 1
According to this, the controller 6 sparks the ignition electrode 17 and opens the solenoid valves 4a to 4c to open the gas burner 5 by the rice cooking instruction input to the operation unit 11 on the jar unit 3 side.
The rice is cooked by controlling the opening and closing of the solenoid valves 4a and 4b based on a well-known rice cooking sequence while observing the detected temperature obtained from the pot bottom sensor 14 and the lid sensor 15.

The base portion 2 is provided with an adjusting ignition switch 18. This is manually switched ON / OFF, and by turning on the adjustment ignition switch, the controller 6 performs normal ignition control and burns the gas burner 5 even if there is no input operation of the operation section 11 on the jar section 3 side. It is possible to do. That is, when the adjusting ignition switch 18 is turned on, the controller 6 performs the adjusting combustion control as shown in FIG. This will be described below. In this adjustment combustion control, before the adjustment ignition switch (hereinafter referred to as ignition switch) 18 is turned on, S1
In step S2, it is determined whether the ignition switch 18 is in the OFF state. If the ignition switch 18 is OFF in this check, it is determined in step S2 whether the ignition switch 18 is turned on. Therefore, here, after turning on the power, the ignition switch 18 must be turned OFF → O.
If N switching is confirmed and the ignition switch 18 is forgotten to be turned off after the end of the previous adjustment combustion control, this control is not performed, that is, the adjustment combustion control is performed only once after being turned on. Sex will be imparted. Next, when the ignition switch 18 is turned on, the timer 1 (for example, 3 minutes) is started in S3. If the timer 1 is counting in S4, it is determined in S5 whether the shuttle switch 16 is turned on, and if it is on, it is further determined in S6 whether the shuttle switch is turned off. As a result, even if the weight or the like is not placed on the shuttle switch 16, it can be pushed once by hand and turned on, and the workability is improved.
In addition, by setting the time limit with this timer 1, even if the ignition switch 18 is accidentally turned on, the shuttle switch 16 is turned on.
After a certain period of time has passed without a signal being input by, the safety that ignition control is not performed is obtained. In this way, when the shuttle switch 16 is turned from ON to OFF, in S7, the ignition electrode 1
Ignition control is performed in which 7 sparks and the solenoid valves 4a to 4c open. When the ignition is confirmed in S8, the timer 2 (for example, 1 minute) is counted in S9, and when the time-up is confirmed in S10, the gas burner 5 is extinguished, and the control ends. The governor can be adjusted during combustion by the timer 2.

As described above, in the above-described adjustment combustion control, the governor can be easily adjusted by operating the ignition switch without using a jig, and the workability of maintenance at the time of gas conversion becomes very good. In particular, here, the steps (S1, S2) for confirming the OFF → ON of the ignition switch 18 and the hook switch 1 within the predetermined time by the timer 1 before the ignition control are performed.
Since steps (S5, S6) for confirming the signal input of No. 6 are added respectively, it is possible to cope with forgetting to turn off the ignition switch 18 and erroneous operation, and high safety is obtained. Further, the hook switch 16 does not have to be continuously turned on by using a weight or the like, and the push-in operation only has to be performed once for the purpose of checking the signal input by the timer 1. Therefore, the structure is rational and the work is further simplified. You can do it. The time of the timers 1 and 2 may be increased or decreased as appropriate, and the signal input by the timer 1 within a predetermined time is set to the hook switch 16
Other than the above, or the steps of the above combustion control for adjustment are simplified (for example, the timer 1 or the O switch of the hook switch).
The design can be changed as appropriate according to the form of the rice cooker, such as by confirming N). Further, the adjustment ignition switch may be a switch that is turned on only when it is operated, or the timer 2 may be omitted so that combustion can be performed only while the switch is on.

[0009]

According to the invention described in claim 1, the gas burner for adjustment can be easily burned only by operating the ignition switch without using a special jig or the like. The workability of maintenance such as is very good. Further, according to the invention described in claim 2, in addition to the effect of claim 1, even if the ignition switch is forgotten to be turned off, combustion control of the gas burner is not performed, and malfunctions at power-on are prevented. It is possible and high safety is obtained. Similarly, claim 3
According to the invention of claim 1, in addition to the effect of claim 1 or 2, even if there is an erroneous ON operation of the ignition switch, the combustion control of the gas burner is not performed, and the ignition switch O
Safety after N operations is added. Further, according to the invention of claim 4, in addition to the effect of claim 3, in a rice cooker provided with a hook switch, a rational configuration in which the confirmation of the signal input of claim 3 is obtained by pushing the hook switch This eliminates the need for a weight or the like that keeps the hook switch ON for maintenance, which simplifies the work.

[Brief description of drawings]

FIG. 1 is a schematic view of a rice cooker.

FIG. 2 is a flowchart of adjustment combustion control.

[Explanation of symbols]

1 ... Rice cooker, 2 ... Base part, 3 ... Jar part, 5 ...
・ Gas burner, 6 ・ ・ Controller, 11 ・ ・ Operating section,
12 ... Display, 16 ... shuttle switch, 18 ... adjusting ignition switch

Claims (4)

(57) [Claims] 1. Input of operation instructions such as rice cooking and heat retention in the inner pot
The jar portion including the input operation portion to be operated can be detached from the base portion including the gas burner and the control portion, and both are electrically connected in a fixed position mounted state on the base portion. , For input operation to the input operation unit
Thus a炊<br/> rice instrument wherein the controller controls the combustion of the gas burner, an ignition switch provided in the base portion, the ON operation of the ignition switch, the control section of the jar section the gas burner A rice cooker that can be burned for a predetermined time in a detached state. 2. The gas burner is burned only when the OFF state of the ignition switch is confirmed before the ON operation of the ignition switch.
Rice cooker described in. 3. A timer means for a predetermined time is provided after the ignition switch is turned on and before the combustion of the gas burner,
The rice cooker according to claim 1 or 2, wherein the gas burner is burned only when a desired signal is input within the count of the timer means. 4. The rice cooker according to claim 3, wherein the desired signal input is obtained by pushing in a hook switch provided on the base portion and turned on by placing the jar portion at a fixed position.