JP3218499B2 - Display of heating 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 cooking device for heating and cooking a food, comprising a temperature setting operation section for setting a cooking temperature and a time setting operation section for setting a cooking time. The present invention relates to a device for displaying a cooking temperature and a cooking time set by a section.

[0002]

2. Description of the Related Art For example, according to Japanese Unexamined Patent Publication No. 3-67925, a knob for setting a cooking time and a rotation of the knob are set on an operation panel of a so-called microwave oven that heats and cooks food by high-frequency electromagnetic waves. There is known an apparatus provided with a display unit for displaying a cooking time to be performed as a number.

[0003]

In some cases, the above-mentioned conventional microwave oven has a function of heating and baking the food with electricity or gas, and performing the baking cooking, in addition to the function of heating by electromagnetic waves. When performing the baking cooking, it is necessary to set a baking temperature and a preheating temperature, and therefore, it is necessary to provide a display unit for displaying the set temperature. Since the set temperature can be represented by a number, the display unit for displaying the cooking time is shared, and if the cooking time and the cooking temperature are selectively displayed on one display unit, the cooking temperature is displayed. It is not necessary to provide a dedicated display unit, and the cost can be reduced. However, when the setting of the cooking temperature has already been completed, such as after starting the baking cooking, and the display on the display unit is switched to the time display for displaying the cooking time, for example, when it is desired to change the set temperature, etc. However, since the set temperature is not displayed on the display unit, it is difficult to set the temperature.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is provided in a cooker for heating and cooking a food,
In a device having a temperature setting operation unit for setting a cooking temperature and a time setting operation unit for setting a cooking time, and displaying a cooking temperature and a cooking time set by both setting operation units, the temperature setting operation unit is a rotary. Knob on the encoder
Mounted on the board on which the encoder is mounted.
A wall surrounding the base on the front side of the encoder is provided on the front side, and
Limiting the rotation operation range of the knob to within 360 degrees, displaying a scale for a set temperature near the knob,
In addition, a mark indicating a position corresponding to the set temperature in the scale is provided on the knob, and one display unit for selectively displaying the cooking temperature and the cooking time is provided, and the cooking time is displayed on the display unit. When the temperature setting operation unit is operated in the state of being operated, the display on the display unit is temporarily switched to the temperature display until a predetermined time elapses after the operation on the temperature setting operation unit is completed from the time of the operation, and the set temperature is displayed. Features.

When an operation is performed on the temperature setting operation section,
By immediately switching the display on the display to the temperature display, the temperature can be set while watching the display. Since the temperature display does not need to be continued after the completion of the temperature setting, the display is returned to the original time display after a lapse of a predetermined time after the operation on the temperature setting operation section is completed.

By displaying the scale near the temperature setting knob, it is possible to read from the scale how many times the set temperature is, even when the time is displayed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a built-in cooker, which is installed together with a gas table GT in a counter of a cooking place. The cooking device 1 is provided with a cooking cabinet 11 for storing foods.
Is to perform heating and cooking of the contents set by the above. Incidentally, the cooking device 1 has a function as a so-called microwave oven, in which a high frequency electromagnetic wave is generated by a magnetron to raise the temperature of the food, in addition to a function of performing baking cooking by heating with a gas flame. In addition, it is configured such that either one of the baking cooking using gas and the heating cooking using electromagnetic waves can be selected and performed independently or simultaneously.

As shown in FIG. 2, the operation section 2 is connected to a control section 3 for controlling the operation of the cooking device 1. When performing baking cooking by gas flame, the solenoid valves 1a and 1
b is opened and the igniter 1c is operated to ignite the burner. The ignition is detected by the frame rod 1d. When the burner is ignited, the internal circulation fan 1e
Is operated to circulate the hot air in the cooking cabinet 11, and the turntable motor 1f is operated to rotate the food in the cooking cabinet 11 to heat it uniformly. Further, the temperature in the cooking chamber 11 is detected by the thermistor 1g, and the solenoid valves 1a and 1b are opened and closed so as to maintain the set temperature.
In addition, since the cooking device 1 has a function as a microwave oven as described above, the cooking device 1 includes a magnetron (not shown) and a high-voltage capacitor for supplying a high voltage to the magnetron. The output of the magnetron is adjusted by switching the on / off duty ratio, and the output is switched between two levels by the switch 2d. The operation and stop of the magnetron is controlled by the relay 1i.

As described above, the operating section 2 of the cooking device 1 capable of performing baking cooking by gas and heating cooking by electromagnetic waves is as shown in FIG. 3 (a). When performing baking cooking by gas alone, press switch 2a,
When cooking by gas and electromagnetic waves is performed simultaneously, the switch 2b is pressed. In addition, the switch 2c is pressed when defrosting is performed using a weak output electromagnetic wave, and the switch 2d is used when heating cooking is performed independently using a high output or low output electromagnetic wave.
push. Then, after pressing any one of the switches 2a to 2d to select the cooking mode, the start switch 2e
Press to start cooking. The switch 2f is a cancel switch. Reference numeral 21 denotes a 7-segment display tube which displays the time when cooking is not performed (clock mode), but is attached to the encoder 22E which is a temperature setting operation unit when performing cooking by gas. When the temperature is set by the temperature control knob 22, the set temperature is displayed, and the knob 23 for setting the cooking time attached to the time setting operation unit (the encoder in this embodiment) is set.
Is operated, the set time and the remaining time until the end of cooking are displayed. The switch 2g is a switch for adjusting the clock. A switch element is mounted on the substrate corresponding to each of the switches, the substrate is covered with a flexible resin sheet, and the switch element is pressed from above the resin sheet. By the way, in this embodiment, the knob 2
2, the internal temperature based on the detection signal of the thermistor 1g and the internal temperature based on the detection signal are not displayed on a dedicated display unit such as a bar-shaped display tube. Therefore, as shown in FIG. 4, a mark 22M is attached to the outer peripheral surface of the cylindrical portion of the knob 22, and the approximate value of the set temperature can be always known by the gauge 2G marked on the surface of the resin sheet of the operation unit 2. I made it.

The cooking device 1 is of a built-in type, but the cooking device may be used alone without being incorporated in a system kitchen or the like. In this case, the internal structure of the cooking device 1 is the same as that of the built-in type cooking device 1. However, the design of the surface may be changed so that the shape of the operation unit differs from that of the operation unit 2 in some cases. In addition, a cooking device that does not necessarily have a heating and cooking function using electromagnetic waves and performs only baking cooking using gas is required in the market. The operation unit of the cooking device that performs only the baking cooking using such a gas is, for example, as shown in FIG. 3B, in which the baking cooking is started by the switch 2h and the preheating is performed by the switch 2i.
And cancellation is performed by the switch 2j. Generally, the control unit 3 is expensive because it includes a CPU and the like. Therefore, only the operation unit may be replaced according to the type of the cooking device. However, if the operation unit for each model is designed as a completely exclusive product, the cost increases. Therefore, FIG.
The operation unit shown in FIG. 3A is designed, and switches and light emitting diodes (LEs) that are not used in the model shown in FIG.
If D) is not attached to the substrate, and it is covered with a dedicated resin sheet for each model from above, the pattern of the substrate is generalized and the number of design steps can be reduced. However, comparing FIGS. 3 (a) and 3 (b), the switch 2
3b, 2c, 2d and 2j, 2h, 2i share the same one, but the control unit 3 determines whether the actually connected operation unit is as shown in FIG. 3 (a) or FIG. 3 (b). Normal control cannot be performed unless it is determined whether the above-mentioned condition is satisfied.

Therefore, as shown in FIG. 5, a line 2L is added to a matrix of the substrate 2 'on which the switches SW (corresponding to the above-described 2a to 2j) are attached, and four positions of the matrix and the line 2L are added. At the intersection of
4 can be attached, and the diode D
The mounting patterns (mounting locations and number of mountings) 1 to D4 were changed. Four diodes D1 to D
The control unit 3 reads the mounting patterns of the diodes D1 to D4 and can detect which of the 16 types of operating units the connected operating unit belongs to. If the type of the connected operation unit is known, the control is performed based on the pre-stored allocation data indicating what control should be performed when any switch is pressed.
Note that jumpers may be used instead of the diodes D1 to D4.

By the way, the knob 22 for setting the temperature is for turning the encoder 22E attached to the substrate 2 '. As described above, if the set temperature is displayed by a bar-shaped display tube or the like, Although the knob 22 may rotate any number of times, the mark 22 of the knob 22 is used as in the present embodiment.
When the approximate set temperature can be determined from M and the gauge 2G represented on the resin sheet, the encoder 22E is set to 36
It is necessary not to rotate more than 0 degrees. Therefore, while forming two plate pieces 22F inside the knob 22,
A stopper claw 2S is erected near the encoder 22E, and when the knob 22 is rotated, the plate piece 22F comes into contact with the stopper claw 2S, and the knob 22 is rotated 360 degrees (26 in this embodiment).
(0 degree). If the knob 22 is turned by more than a set angle for some reason, the set temperature is immediately switched to the lowest temperature (error mode),
If it does not return to the set angle range after 3 seconds or more, a predetermined error display (display of an error code and sounding of a buzzer) is performed and the operation is stopped. If the signal of the encoder 22E returns to normal before three seconds have elapsed, the error mode is released and the original control is continued.

By the way, static electricity may be charged on the surface of the operation unit 2, and if the static electricity causes a spark discharge to the encoder 22E, the static electricity may affect the control unit 3 from the substrate 2 'and adversely affect the control. is there. Therefore, the cylindrical wall 2W surrounding the base on the front side of the encoder 22E is formed integrally with the frame 2F that holds the substrate 2 'and is hidden by the resin sheet, at a height that does not interfere with the plate piece 22F. When the cylindrical wall 2W is formed in this way, static electricity that has entered through the knob 22 from the surface of the operation unit cannot spark on the base of the encoder 22E without climbing once along the outer peripheral surface of the cylindrical wall 2W. The creepage distance with the base of the encoder 22E can be increased, and spark discharge to the encoder 22E can be prevented.

Next, as an example of the operation of the cooker 1 provided with the operation unit shown in FIG. 3A, an operation procedure in the case of performing calcination cooking by gas alone will be described with reference to FIG. First,
Pressing the switch 2a once causes the knob 22 to wait for the input of the firing temperature (A).
2 and the state of waiting for the input of the preheating temperature (G), and each time the switch 2a is pressed, the state is alternately switched between A and G. For example, if the temperature is set by turning the knob 22 in the state of A or the operation is not performed for 3 seconds, the process proceeds to B and a timer input standby state by the knob 23 is set. When a timer input is made, the state is set to the start standby state of C. However, it is possible to directly shift to the start standby state of C by operating the knob 23 from the state of A. On the other hand, when the preheating temperature is set with the knob 22 from the state of G, or when 3 seconds elapse, the state shifts to H and the knob 2 is set.
When the timer is input by the knob 23, a preheating start standby state of I is set. Further, it is possible to directly shift to I from the state of G by the timer input by the knob 23. The switch 2a between B and H and between C and I are the same as between A and G.
Each time you press, you can switch between them. And
When the start switch 2e is pressed from the state of C, the processing shifts to D, and the baking cooking by gas starts. When the door of the cooking cabinet 11 is opened during the baking cooking, the process proceeds to F and the baking cooking is interrupted. However, when the door is closed and the start switch 2e is pressed again, D starts.
Return to and continue baking cooking for the remaining time. When the time set by the timer elapses, the process shifts to E to end the cooking, and the display tube 21 shifts to the clock mode to display the time. When the start switch 2e is pressed from the state of I, the process shifts to J and the preheating operation is started. However, in the preheating operation, the preheating timer does not necessarily need to be set, so the start switch 2e is changed from the state of G or H Even if it is pressed, it shifts to J and starts the preheating operation. Here, when the door is opened to put the food into the cooking cabinet 11, the process proceeds to M and waits for input of a timer for firing cooking. When the timer is set, the process proceeds to F. Then, when the door is closed and the start switch 2e is pressed, the process shifts to D and firing cooking is started. If the timer for baking is set before the door is opened in the state of L, the process proceeds to K, and if the door is opened to put the food into the cooking cabinet 11, the process proceeds to F. If the timer for baking has already been set at the end of the preheating operation, the process directly shifts from J to K. In addition, the switch 2a like CI
When the switch 2a is not depressed and the switch 2a is not depressed and continues for 5 minutes, all settings are canceled and the mode returns to the first clock mode.

During the above operation, the display tube 21 is set to A and B
In each state of G and H, the set temperature set by the knob 22 is displayed, but C, D, E, F, I, J, K
In each of the L and M states, the display is switched to the timer display, and the time set by the knob 23 and the remaining time from the set time are displayed. However, even after the display is switched to the timer display, the knob 22 is turned to change the temperature setting, and when a pulse signal is output from the encoder 22E, the display is forcibly switched to the temperature display.
The display is returned to the timer display again three seconds after the output from E is stopped.

By the way, in the preheating completion state indicated by KL, the display of the display tube 21 is switched to the timer display. Then, when the switch 2a is pressed, the switch 2
The display on the display tube 21 is switched to the display based on the in-chamber temperature detected by the thermistor 1g only while a is pressed. However, when setting the temperature by turning the knob 22, it is conceivable to display the set temperature on the display tube 21 in increments of one degree.
There is no need to set the temperature in increments of degrees. Conversely, if the temperature can be set in increments of 1 degree, it becomes rather difficult to set. Therefore, in the present embodiment, when the knob 22 is turned to set the temperature, the temperature is set in increments of 10 degrees within a range of 100 degrees or more. On the other hand, when the internal temperature detected by the thermistor 1 g is displayed on the display tube 22, the internal temperature corresponding to the set temperature is displayed rather than displaying the detected actual internal temperature in increments of 1 degree. It is easier to use. If the set temperature set by the knob 22 is, for example, 190 degrees,
The temperature detected by 1 g of the thermistor is 182 degrees (off-temperature: However, the actual inside temperature is slightly higher than this)
, The burner is extinguished, and if the detected temperature drops to 178 degrees (on temperature), the burner is re-ignited to maintain the inside temperature. still,
When the set temperature is 200 degrees, the off temperature is 191 degrees and the on temperature is 187 degrees. When the set temperature is 210 degrees, the off temperature is 202 degrees and the on temperature is 198 degrees. When the internal temperature is displayed on the display tube 21 as shown in FIG. 8, for example, when the internal temperature exceeds 182 degrees, which is the set temperature of 190 degrees, based on the off temperature of each set temperature. (A) 190 degrees is displayed as the internal temperature. When the temperature reaches 191 degrees, which is the off-temperature of the set temperature of 200 degrees, the display is changed to 200 degrees (a). When the temperature is lower than 182 degrees, the display is returned from 200 degrees to 190 degrees (c). 200 degrees is displayed again (d), and the display of 200 degrees is maintained until the set temperature exceeds 202 degrees which is the off temperature of 210 degrees (e).

By the way, a predetermined storage unit is attached to the control unit as a storage means, and accumulates and stores the time and the number of times of operation of the magnetron irrespective of the strength of the output electromagnetic wave, and also stores the time by the gas. The heating cooking time (including the preheating time) and the number of times of cooking are integrated and stored. Then, at the time of maintenance or the like, the cumulative operation time and the number of times of operation are displayed together with information such as a repair history.

In the above embodiment, the type of the operation unit is distinguished by the mounting pattern of the diodes D1 to D4.
The control unit electrically reads the mounting pattern to determine the type of the operation unit. However, as shown in FIG. 9, the control unit corresponds to the diodes D1 to D4 when the board 2 'is mounted on the frame 2F. If the convex plate 4 is formed integrally with the frame body 2F at the position where it is to be formed, and if the upper portion of the convex plate 4 is cut out in accordance with the mounting pattern of the diodes D1 to D4, it is possible to attach another operation unit. Since the diode and the convex plate 4 interfere with each other, other operation units cannot be mounted. Further, by changing the position of the boss 5 that fits into the hole 51 formed in the substrate 2 'and holds the substrate 2' in accordance with the type of the substrate, it is possible to prevent other operating parts from being erroneously attached. Further, at the mounting position of the diodes D1 to D4,
A through hole provided for inserting the lead wire of the diode is opened according to the mounting pattern of the diode, and the diode can not be physically mounted by not opening the through hole at the place where the diode is not mounted. Good.

[0019]

As is apparent from the above description, the present invention can reduce the cost of the display unit by displaying the cooking temperature and the cooking time on one display unit. In addition, even when setting the temperature while displaying the cooking time, the cooking temperature can be set while looking at the display unit by temporarily switching the display to the temperature display,
Setting of the cooking temperature is facilitated.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an installation state of a cooking device to which the present invention is applied.

FIG. 2 is a block diagram showing a configuration inside the cooking device.

FIG. 3 is a diagram for explaining a difference in an operation unit depending on a model.

FIG. 4 is a partially enlarged view showing the vicinity of a knob 22;

FIG. 5 is a block diagram showing a part of the configuration of a control unit.

FIG. 6 is a cutaway perspective view showing a configuration near a knob 22;

FIG. 7 is a flowchart showing a procedure of baking cooking.

FIG. 8 is a diagram illustrating a temperature displayed as an internal temperature.

FIG. 9 is a partial perspective view showing an example of a state in which the operation unit is attached to the substrate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooker 2 Operation part 3 Control part 21 Display tube 22 Knob (for temperature setting) 23 Knob (for time setting) D1-D4 Diode

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-120091 (JP, A) JP-A-58-214718 (JP, A) JP-A-58-22824 (JP, A) JP-A-56-214 124836 (JP, A) JP-A-5-180958 (JP, A) JP-A-5-22491 (JP, A) JP-A-61-62726 (JP, A) Japanese Utility Model Laid-Open No. 60-121105 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24C 7/02 301 F24C 15/00

Claims (1)

(57) [Claims] 1. A cooking device provided in a cooker for heating and cooking a food, the cooking device having a temperature setting operation unit for setting a cooking temperature and a time setting operation unit for setting a cooking time, wherein the cooking is set by both setting operation units. In the device for displaying the temperature and the cooking time, the temperature setting operation section is provided with a rotary encoder .
With a knob attached , attach the encoder
A wall surrounding the base on the front side of the encoder is provided on the front side of the board.
In addition to restricting the rotation operation range of the knob to within 360 degrees, a scale for a set temperature is displayed near the knob, and a mark indicating a position of the scale corresponding to the set temperature is displayed. A knob is provided and one display unit for selectively displaying the cooking temperature and the cooking time is provided. When the temperature setting operation unit is operated in a state where the cooking time is displayed on the display unit, the temperature is set from the time of the operation. A display device for a heating cooker, wherein the display on the display unit is temporarily switched to a temperature display until a predetermined time elapses after the operation on the setting operation unit is completed, and the set temperature is displayed.