JPH0587414U - Cookers such as ovens - Google Patents

Abstract

(57) [Summary] [Structure] A heater 4 is provided in the heating chamber 2, a thermostat 6 for controlling energization is connected to the heater 4, and a heat-sensitive part 7 of the thermostat 6 is provided in the heating chamber 2 so that the heat A control heater is provided in the vicinity of the part 7 to make the thermostat 6
Is operated by the sum of heat of the heater 4 and the control heater, and a heat generation amount changing means such as a variable resistor is connected to the control heater, and the heat generation amount changing means is operated by an operation from the outside of the heating chamber. A dial 12a is provided. [Effect] The control temperature of the heating chamber can be changed by changing the amount of heat generated by the control heater with the dial.
In addition, the heating control temperature can be changed externally using the dial, which improves operability and improves thermal response. The thermostat temperature control needs only one point when the control heater is not energized. This has the effect of facilitating manufacturing control.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooking device such as an oven that controls the temperature inside a heating chamber using a thermostat to heat and control foods and the like.

[0002]

[Prior Art]

 Conventionally, a cooking device such as an oven of this kind has a structure in which a heater is provided in a heating chamber and a thermostat for controlling energization is connected to the heater as disclosed in Japanese Utility Model Publication No. 3-22650, and the user desires it. Adjusting the dial to the temperature scale display so that the temperature is the same, changing the contact interval of the thermostat and adjusting the operating temperature, the heater installed in the heating chamber is energized and controlled by this thermostat to obtain the prescribed temperature. It is common.

[0003]

[Problems to be solved by the device]

 With the above-mentioned conventional configuration, the temperature required for the user to cook must be adjusted with the dial each time, which is not only a drawback of poor operability but also the contact of the thermostat. The relationship between the ON / OFF timing and the set temperature has to be managed in a wide range from high temperature to low temperature, and there is a manufacturing problem such as troublesome management. In Japanese Utility Model Laid-Open No. 61-76206, a heater is provided in the heating chamber, and two thermostats are provided between the heater and the power source. One thermostat detects the temperature of the heated object and controls the energization of the heater. A control heater is connected in parallel via a switch to the series circuit of these thermostats, and the other thermostat can be switched to two control temperatures by turning the control heater on and off with a switch. There are some that can be heated according to the requirements, but one more thermostat is required, and no consideration is given to the troublesome manufacturing control.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems.A heater is provided in the heating chamber, a thermostat for controlling energization is connected to the heater, and a thermosensitive part of the thermostat is provided in the heating chamber. A control heater is installed near the thermostat so that the thermostat operates by the sum of the heat of the heater and the control heater.The control heater is connected with a heating value changing means such as a variable resistor. A dial that is operated by an operation from outside the heating chamber is provided.

[0005]

[Action]

 With the above configuration, the thermostat operates according to the sum of the heat of the heater and the control heater. Therefore, if the heat generation amount of the control heater is large by changing the heat generation amount of the control heater with the dial, It is possible to change the control temperature of the heating chamber by operating the thermostat at a lower temperature in the heating chamber than when the temperature is low. In addition, the setting of the heating control temperature can be changed by an external operation using the dial.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front external perspective view of a cooking device such as an oven according to an embodiment of the present invention with a door open, FIG. 2 is a side view of the thermostat, and FIG. 3 is the same. FIG. 4 is a circuit diagram, FIG. 4 is a temperature rise characteristic diagram of the heating chamber, and FIG. 5 is a circuit diagram of a cooker according to another embodiment.

In the figure, reference numeral 1 is a main body having a heating chamber 2 provided therein, and a heater 4 is provided above and below the heating chamber 2. Further, inside the heating chamber 2, there is provided a placing table 3 on which a food or the like interlocking with a door 5 attached to the front surface of the main body 1 is placed. A thermostat 6 is provided so that its heat-sensitive part 7 is located in the upper part of the heating chamber near the door 5 so as not to interfere with the putting in and out of the food.

The thermostat 7 has a thermal deformation member 8 that expands and returns due to heat, and one end 8a of the thermal deformation member 8 is fixed to the heat-sensitive portion 7. Depending on the amount of deformation, heat is deformed. The other end 8b of the deformable member 8 moves to turn the contact 9 on and off. Reference numeral 10 is an adjusting rod for adjusting the temperature to be turned on and off, and the temperature inside the heating chamber 2 is set in advance to, for example, 220 ° C. when the control heater 11 described later does not supply electricity.

The control heater 11 is electrically insulated from the heat-sensitive portion 7 of the thermostat 6.

Reference numeral 12 denotes a calorific value changing means such as a variable resistor capable of changing the calorific value of the control heater 11, which is connected in series with the control heater 11. Further, when the thermostat 6 is operated by the sum of the minimum amount of heat generated when the control heater 11 is energized and the temperature at which the heat in the heating chamber 2 is picked up by the heat-sensitive section 7 of the thermostat 6, the heating chamber is heated. As described above, the temperature inside 2 is, for example, 220 ° C., the maximum amount of heat generated when the control heater 11 is energized, and the temperature inside the heating chamber 2 where the heat is picked up by the heat-sensitive section 7 of the thermostat 6. The electric power of the control heater 11 and the resistance value of the variable resistor 12 are set so that the temperature inside the heating chamber 2 becomes, for example, 100 ° C. when the thermostat 6 is operated by the sum of the above.

Further, for example, a dial 12a capable of changing the resistance value of the variable resistor 12 is provided outside the main body 1, and the resistance value of the variable resistor 12 is changed by turning the dial 12a to change the resistance value in the heating chamber 2. The temperature can be freely changed from 100 ℃ to 220 ℃.

Numeral 13 is a timer which can freely adjust the cooking time and turn off the power when the time comes.

Next, the operation of this embodiment will be described.

First, the food is placed on the table 3 and the door 5 is closed. At this time, since the heat-sensitive section 7 is located near the door 5 and above the door 5, it does not interfere with the loading and unloading of food. Next, the dial 12a is turned to select the temperature corresponding to the food to be cooked from 100 ° C to 220 ° C. When the timer 13 is set to an appropriate time, the heater 4 is energized to start cooking. Then, when the thermal deformation member 8 in the heat-sensitive section 7 is deformed and the temperature in the heating chamber 2 reaches the temperature set by the dial 12a, the thermostat 6 maintains the temperature and continues the cooking while turning the heater 4 on and off.

At this time, since the heat sensitive portion 7 is located inside the heating chamber 2, the temperature inside the heating chamber 2 can be easily picked up and the thermal response is good.

When the cooking time set by the timer 13 comes, the contact of the timer 13 is cut off and the power is cut off.

In this embodiment, the temperature of 100 ° C. to 220 ° C. is described. However, by changing the set temperature of the thermostat 6, the heat generation amount of the control heater 11 and the resistance value of the variable resistor 12, the inside of the heating chamber 2 can be freely changed. The temperature of can be set.

Further, as shown in FIG. 5, the same effect can be obtained by connecting the control heater 11 and the variable resistor 12 in parallel.

[0020]

[Effect of the device]

 According to the present invention as described above, a heater is provided in the heating chamber, a thermostat for controlling energization is connected to the heater, a thermosensitive part of the thermostat is provided in the heating chamber, and a control heater is provided in the vicinity of the thermosensitive part. The control heater is operated by the sum of heat, and a heating value changing means such as a variable resistor is connected to this control heater, and a dial operated by an operation from outside the heating chamber is connected to the heating value changing means. Since it is provided, by changing the heating value of the control heater with the dial, it is possible to change the control temperature of the heating chamber by operating the thermostat at a lower temperature in the heating room than when the heating value of the control heater is high. The temperature inside the heating chamber can be controlled externally by a dial without changing the thermostat contact spacing. The operability is improved by changing the temperature setting, the thermal response is improved, and the thermostat only needs to control the operating temperature at one point, which facilitates manufacturing control. Is extremely large.

[Brief description of drawings]

FIG. 1 is a front external perspective view of a cooking device such as an oven according to an embodiment of the present invention with a door open.

FIG. 2 is a side view of the thermostat.

FIG. 3 is a circuit diagram of the same.

FIG. 4 is a temperature rise characteristic diagram of the heating chamber.

FIG. 5 is a circuit diagram of a cooker according to another embodiment.

[Explanation of symbols]

 2 heating chamber 4 heater 6 thermostat 7 heat sensitive part 11 control heater 12 heat generation amount changing means (variable resistor) 12a dial

Claims (3)

[Scope of utility model registration request] 1. A heater (4) is provided in a heating chamber (2), a thermostat (6) for controlling energization of the heater (4) is connected to the heater (4), and a thermosensitive part of the thermostat (6). (7) A control heater (11) is provided in the vicinity of the control heater (11), and the thermostat (6) is operated by the sum of heat of the heater (4) and the control heater (11). )
A cooking device, such as an oven, to which a calorific value changing means (12) for varying the calorific value of is connected. 2. A heating value changing means (1) comprising a variable resistor.
2. A cooker such as an oven according to claim 1). 3. A heating chamber (2) in the heating value changing means (12).
The cooking device for an oven or the like according to claim 1, further comprising a dial (12a) which is operated by an external operation.