JPS59109722A - Electric range - Google Patents

Abstract

PURPOSE:To save the maximum power consumption of a total electric range by a method wherein heaters are constituted so that a heating element of a specified heater may be disconnected only when a loaster is actuated in case all heaters are fully operated. CONSTITUTION:While heaters 1, 2, 3 are operated, switches 13, 14, 15 are closed and relays 18, 19 are actuated to open switches 21, 22 but another switch 23 is closed while heating elements 9, 10, 11 of the heaters 1, 2, 3 are made conductive. When another switch 17 is closed to actuate a loaster 4 in this status, the heating element 12 of the loaster 4 is made conductive simultaneously actuating a relay 20 to open another switch 23 automatically disconnecting the heating element 11 of the heater 3. Besides, for example while the heater 3 only is operated, the switches 21, 22, 23, 15 are closed all together. When the switch 17 is closed to actuate the loaster 4 in this status, the heating element 12 of the loaster 4 is made conductive simultaneously actuating the relay 20 to open the switch 23. Therefore only when the loaster 4 is actuated in case the heaters 1, 2, 3 are simultaneously operated, the heater 3 is disconnected affording a preference to make the loaster 4 conductive.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an electric range with a roaster for use in general household kitchens.

Conventional structure and its problems Traditionally, this type of electric range had 20 or 30
It has a stove and a roaster on the front for roasting fish, etc. Figure 1 shows 30 types of electric ranges.

Numerals 1, 2, and 3 on the top are stoves such as sheathed heaters, and numeral 4 on the front is a roaster. 5, 6.7 are power amount adjustment knobs (ON-OFF control using self-heating bimetal)
, 8 is a heater switching knob located at the center of the top surface for switching between the stove 3 heater and the roaster 4 heater.

The power consumption of the three stoves in the electric range is 2KW for stove 1, 1.5xW for stove 2, and IKW for stove 3.
The power consumption of the roaster 4 is 800W to 1KW. In the case of Type 20, the power consumption of both stoves is 1.6KW.

Both the 30 and 20 models have a heater switching knob 8, and when using the roaster 4, it is used by switching to one of the stoves on the top. In the 30 type, the heater of the central stove 3 is turned off and the heater of the roaster 4 is energized.

FIG. 3 shows an electric circuit diagram of a conventional 30 type electric range with a roaster. 9 is a 2KW stove 1 heater, 1
o is 1.5KW (7)”: 102 heater, 11 is 1K
W stove 3 heater, 12 is soow roaster 4
heater, 13, 14.15 is the power amount adjustment knob 5.6
．． 7 is a switch, and 16 is a switch for the heater switching knob 8. When using the heater 12 of the roaster 4, the switch 16 is turned on, so the heater 11 of the stove 3 cannot be used. Therefore, even when the roaster 4 is used, the maximum power consumption of the electric range is suppressed so as not to exceed the total power consumption of the stove. However, in this configuration, for example, in the case of type 30, if only stove 3 is used for cooking such as boiled food, and you try to use roaster 4, stove 1 and stove 2 are not in use, Even if the power consumption does not exceed the maximum power consumption of the electric range, it is necessary to turn off the heater 11 of stove 3 and switch to roaster 4, and the pot of stove 3 must be switched to stove 1. This meant that I had to transfer it to stove 2 and use it, which made it inconvenient to use.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides an electric range that is easier to use without increasing the maximum power consumption.

Structure of the Invention The electric range of the present invention includes a device that detects the usage status of a stove and a roaster, and a device that automatically switches between preset stove heaters and roaster heaters. Even if you use some of the stoves and roaster together, you can use only one of them, and only if you try to use the roaster while all the stoves are in use, the preset stove heater is turned off, and the roaster's heater is energized.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In this example, three relays are used as a device to detect the usage status of the stove and roaster, and a device to automatically switch between the stove heater and the roaster heater, and the circuit diagram thereof is shown in Fig. 4. show. The same parts as in FIGS. 1 to 3 are indicated by the same reference numerals. 17 is the power amount adjustment knob. H, 18, 19.20 are relays connected in parallel with heaters 9, 10.12, respectively, and 21il.
22 is a normally closed switch that is opened by the relay 19, and 23 is a normally closed switch that is opened by the relay 20.

To explain the operation in the above configuration, for example, the stove 1
, 2, and 3 are in use, switches 13, 14, and 15 are on, and relays 18 and 19 are activated to switch f21 and 22i.
7" is on, but the switch 23 is on, and the heaters 9, 10° 11 of the stoves 1, 2, and 3 are energized. In this state, if you do not want to use the roaster 4, turn on the switch 1γ. Then, the heater 12 of the roaster 4 is energized, the relay 20 is activated, the switch 23 is opened, and the heater 11 of the stove 3 is automatically turned off.For example, if only the stove 3 is being used, the switch 21 22, 23, and 15 are both turned on.In this state, if you don't want to use roaster 4, turn on the switch 17, and the heater 12 of roaster 4 will be energized, the relay 20 will also work, and the switch 23 will open. However,
Switches 21 and 22 are almost turned on, so stove 3
remains energized. Therefore, it is possible to use the roaster 4 and the stove 3 at the same time, and the same applies to other combinations. Only when trying to use Roaster-4 when using Conr11.2.3 at the same time,
The stove 3 is turned off, and the roaster 4 is preferentially energized. Therefore, it is possible to improve the conventional inconvenience and suppress the maximum power consumption of the electric range.

FIG. 6 shows another embodiment of the present invention, which is a stove.

A microcomputer is used as a device for detecting the usage status of the roaster and as a device for automatically switching the energization between the stove heater and the roaster heater. The basic functions of the microcomputer in this example are:
Processes input signals related to whether the stove or roaster heater should be turned on or off, how much power it consumes when turned on, and then turns the heater on for a predetermined amount of time depending on the input signal. It is to send a signal to the outside so that the As an additional function, when three stoves are used at the same time, when a signal is received to turn on the roaster heater, the heater of one stove is turned off.
It has the function of sending out a signal to turn on the roaster heater. The circuit will be explained below.

The same parts as in Figures 1 to 3 are indicated by the same reference numerals and are 1/-1.
Le. The microcomputer 301 is a cPU.

It is a so-called one-chip microcontroller consisting of ROM, RAM, and input/output ports.

The usage status of each heater is the on/off switch 21, 22, 23 and volume 26, 27, 28 for adjusting the amount of power for the stoves 1 and 2.3, the on/off switch 24 for the roaster 4, and the volume 44 for adjusting the amount of power. A status signal from the microcomputer 30 is read into the input port of the microcomputer 30 via the A/D converter 29, thereby being judged and determined.

On/off of each heater, power amount control (on-off control)
is performed by a control signal from the output port of the microcomputer 30. The transistors 40 and 4 are controlled by the control signal from the output port of the microcomputer 30.
1. 42.43, and photocouplers 36.37.
38. A current is passed through the light emitting part of 39.

As a result, the light receiving parts of the photocouplers 36, 37, 38, and 39 operate, and gate current flows from the DC power supply 36.
Triac 31. 32, 33, and 34 become conductive, respectively, and the heaters 9, 10, 11, and 12 are energized. Power can also be adjusted by controlling the energization time of the heater using a microcomputer according to the setting value of the power adjustment volume.

In an electric range using a microcomputer as described above, by performing the processing shown in the flowchart in Fig. 6, normally the roaster and a specific stove (for example, stove 3) can be operated at the same time. If available and all stoves are in use, roaster
You can turn on the heater on priority basis and turn off the heater on the specific stove.

The flowchart will be explained below. In step (2), it is determined whether roaster 4 is to be used, and if it is to be used, the usage status of stoves 1 and 2 is checked in steps (2) and (3).

If not used, turn on heater 1 of roaster 4 in step ■.
Cut 2. In step (2), it is determined whether the stove 1 is in use, and if it is not in use, the heater 12 of the roaster 4 is energized in step (2). In step (2), it is similarly determined whether the stove 2 is in use, and if it is not in use, the heater 12 of the roaster 4 is energized in step (2). If stove 1 and stove 2 are being used at the same time in steps (2) and (2), the heater 11 of stove 3 is turned off in step (2), and then the heater 12 of roaster 4 is energized in step (2).

As mentioned above, microcombi - stove in the evening.

By providing the functions of a device that detects the usage status of the roaster and a device that automatically switches between the heater of the stove and the heater of the roaster, problems in the usability of conventional electric ranges can be solved.

In addition, in the above two embodiments, an example using a relay or a microcomputer is shown, but the present invention is not limited to the above two embodiments.
The examples are not limited.

Effects of the Invention As is clear from the above embodiments, the electric stove of the present invention includes a device that detects the usage status of each stove and roaster, and a device that detects the usage status of each stove and roaster, and controls the heater of a specific stove and roaster based on the detection by this device. By having a device that switches the energization between the roaster and a specific stove, it is possible to use the roaster and a specific stove at the same time, improving usability. Although the stove heater cannot be turned off, the maximum power consumption of the electric range as a whole can be reduced as before.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional electric range, FIG. 2 is a front view thereof, FIG. 3 is an electric circuit diagram thereof, FIG. 4 is an electric circuit diagram of an electric range showing an embodiment of the present invention, and FIG. The figure is an electric circuit diagram showing another embodiment of the present invention, and FIG. 6 is a flow chart of the microcomputer program. 1.2.3...Stove, 4...Roaster-19°10.11...Stove heater, 1
2... Roaster heater, 18, 19.20
...Relay, 21゜22.23 ...Relay switch, 29 ...A/D converter, 3o
・・・・・・Microcomputer, 31°32.33
．． 34...triac. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] A plurality of heaters for the stove and the roaster, a switch for turning these heaters on and off, a device for detecting the usage status of the heaters, and a device that detects the usage status of the stove and the stove that is set in advance when the roaster is used. An electric oven having a device for automatically switching a heater to a roaster heater in association with said device.