KR100188580B1 - Apparatus of display - Google Patents

Abstract

[assignment]

If the cooking time and the set temperature are selectively displayed by one display unit, it is difficult to change the set temperature in a state where the cooking is started and the cooking time is displayed.

[Solution]

The display is switched from the cooking time to the set temperature when the temperature setting operation is performed and the display is returned to the cooking time after the predetermined time has elapsed after the temperature setting operation is completed.

Description

Display of heating cooker

FIG. 1 is a view showing an example of an installation state of a cooker to which the present invention is applied; FIG.

FIG. 2 is a block diagram showing a configuration in a cooker. FIG.

FIG. 3 is a view for explaining the upper part of an operation part according to a model; FIG.

4 is a partially enlarged view showing the vicinity of the handle 22. Fig.

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

FIG. 6 is a cut-away perspective view showing a configuration in the vicinity of the handle 22. FIG.

FIG. 7 is a flow chart showing the sequence of firing cooking; FIG.

FIG. 8 is a diagram illustrating the temperature to be displayed as the internal temperature. FIG.

Fig. 9 is a partial perspective view showing an example of a state in which the operation section is attached to the board;

DESCRIPTION OF THE REFERENCE NUMERALS

1: Cooker 2:

3: control unit 21: display tube

22: Handle (for temperature setting) 23: Handle (for time setting)

D1 to D4: Diodes

[Technical Field]

The present invention relates to a cooking apparatus which has a temperature setting operation section for setting a cooking temperature and a time setting operation section for setting a cooking time and a cooking temperature and cooking time set by the two setting operation sections, ≪ / RTI >

[0003]

For example, as disclosed in Japanese Patent Application Laid-Open No. 3-67925, a so-called microwave oven operation panel for heating and cooking cooked food by high-frequency electromagnetic waves includes a handle for setting a cooking time setting operation, It is known to provide a display unit for displaying the cooking time set by the rotation as a number.

[Problems to be solved by the invention]

The above-described conventional microwave oven has a function of heating and firing a cooking material by electric or gas, as well as a heating function by electromagnetic waves, and baking and cooking. In the case of the above-mentioned baking, it is necessary to set the baking temperature and the preheating temperature, and therefore it is necessary to provide a display unit for displaying the set temperature. Since the set temperature can be expressed by a numeral, if the cooking time and the cooking temperature are alternatively displayed on one display unit by sharing the cooking time, a dedicated display unit for displaying the cooking temperature is provided The cost can be reduced because it is not necessary. However, when the setting of the cooking temperature has already been completed and the display of the display section is switched to the time display for displaying the cooking time, for example, after the firing cooking is started, for example, There is a problem that it is difficult to reset the temperature because the temperature is not displayed.

[MEANS FOR SOLVING THE PROBLEMS]

In order to solve the above problems, the present invention provides a cooking apparatus for cooking food, comprising a temperature setting operation unit for setting a cooking temperature and a time setting operation unit for setting a cooking time, Wherein the temperature setting operation unit is a rotary encoder and is configured to limit the rotation operation range of the encoder to within 360 degrees and to display a set temperature scale in the vicinity of the handle attached to the encoder, An arrow indicating a position corresponding to the set temperature in the scale is formed on the handle, and one display unit for alternatively displaying the cooking temperature and the cooking time is provided, and a state in which the cooking time is displayed on the display unit When the temperature setting operation unit is operated, the operation for the temperature setting operation unit Exit and by temporarily switching to the temperature indicating the display of the display unit until a predetermined time characterized in that for displaying the set temperature.

When the temperature setting operation section is operated, that is, by switching the display of the display section to the temperature display, the temperature can be set while viewing the display. In addition, since the temperature display does not have to be continued after the temperature setting ends, the display returns to the original time display after a predetermined time elapses after the operation for the temperature setting operation unit is terminated.

Also, by displaying the scale in the vicinity of the temperature setting knob, it is possible to read with the scale the temperature of the set temperature, even in the state in which the time is displayed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, reference numeral 1 denotes a built-in cooker, which is fitted in a counter of a cooking chamber together with a gas table GT. The cooking utensil 1 is provided with a cooking chamber 11 for storing cooking food, and cooks the contents with the contents set by the operating unit 2. Meanwhile, the cooker 1 has a so-called microwave oven function of generating a high-frequency electromagnetic wave by a magnetron to raise the temperature of the food, in addition to a baking cooking function of heating with a gas flame. It is configured so that either singleton operation or simultaneous operation of both of the calcination cooking by gas and the heating cooking by electromagnetic wave can be selected.

2, the operation section 2 is connected to a control section 3 for controlling the operation in the cooker 1. [ During the baking by the gas flame, the solenoid valves 1a and 1b are opened and the igniter 1c is operated to ignite the burner. The ignited one is detected by the frame rod 1d. When the burner is ignited, the intracorporeal circulation fan 1e is operated to circulate the heat in the cooking cavity 11, and the turntable motor 1f is operated to rotate the food in the cooking cavity 11 to uniformly heat it. Further, the temperature in the jig 11 is detected by the thermistor 1g, and the solenoid valves 1a and 1b are controlled to be opened or closed so that the set temperature is maintained. The cooker 1 is provided with a magnetron (not shown) and a high-pressure condenser for supplying a high voltage to the magnetron so as to have the function as a microwave oven as described above. The output of the magnetron is controlled by switching the duty ratio of ON / OFF. The output of the magnetron is switched to the second stage by the switch 2d. Further, the operation and stop of the magnetron are controlled by the relay 1i.

As described above, the operating portion 2 of the cooking utensil 1 capable of cooking baked with gas and cooking with electromagnetic waves is as shown in Fig. 3 (a). The switch 2a is pressed when the gas cooking is to be performed singly, and the switch 2b is pressed when the gas and the electromagnetic wave are cooked at the same time. The switch 2c is depressed when it is defrosted by an electromagnetic wave of weak output, and the switch 2d is depressed when the defrost is controlled by a high-output or low-output electromagnetic wave alone. Then, one of the switches 2a to 2d is pressed to select the cooking mode, and the cooking is started by pressing the start switch 2e. Reference numeral 2f denotes a cancel switch. 21 is a 7-segment display tube. When the cooking is not performed, the time is displayed (time mode). In the time control mode, the temperature adjustment knob 22 attached to the encoder 22E, When the temperature is set, the set temperature is displayed. When the knob 23 for setting the cooking time attached to the time setting control section (encoder in this embodiment) is operated, the remaining time until the set time or the cooking end is displayed will be. Further, the switch 2g is a time adjustment switch. A switch element is attached to the substrate corresponding to each of the switches, the substrate is covered with a resin sheet which is soluble, and the switch element is pressed on the resin sheet. Incidentally, in the present embodiment, a configuration is employed in which the internal temperature based on the set temperature set by the knob 22 or the detection signal of the thermistor 1g is displayed by a dedicated display unit such as a rod-shaped display tube or the like I do not. 4, a mark 22M is attached to the outer circumferential surface of the cylindrical portion of the knob 22 and the approximate value of the set temperature is set by the gauge 2G held on the surface of the resin sheet of the operating portion 2 as I always let them know.

In this case, even if the internal configuration is the same as that of the built-in cookware 1, the design of the surface is changed, The shape of the operating portion 2 may be different from that of the operating portion 2. [ In addition, it is not always necessary to provide a heating cooking function by electromagnetic waves, and a cooking machine which only cooks by gas is required in the market. In this case, the start of the baking is referred to as the switch 2h, and the preheating is performed by the switch 2i (see Fig. 3 And cancellation is made by the switch 2j. In general, the control unit 3 is expensive because it is equipped with a CPU or the like. Therefore, it is only necessary to replace the operating portion only in accordance with the model of the cooker. However, the cost is increased by designing the entire operating unit for each type completely. In the case of the model shown in Fig. 3 (b), switches and light emitting diodes (LEDs) which are not used are not attached to the substrate, The pattern of the substrate can be generalized and the number of times of designing can be reduced. 3 (a) and 3 (b), the switches 2b, 2c and 2d and the switches 2j, 2h and 2i share the same thing, but the control section 3 is actually connected Normal control can not be performed unless the operation unit determines whether the operation unit is shown in FIG. 3 (a) or FIG. 3 (b). 5, a line 2L is added to a mattress to which each switch SW (corresponding to 2a to 2j) of the substrate 2 'is attached, and a line 2L is formed between the mattress and the line 2L (D1 to D4) can be attached to the intersections of the diodes (D1 to D4), and the mounting patterns (mounting locations and number of mounting) of the diodes (D1 to D4) can be changed for each model. There are sixteen kinds of patterns for attaching the four diodes D1 to D4 and the control unit 3 can read the attachment pattern of the diodes D1 to D4 to detect which of the sixteen types of operation units is connected to the operation unit . When it is known which type of operation unit is connected, control is performed based on the data which is stored in advance and which control is performed when a certain switch is depressed. A jumper wire may be used instead of the diodes D1 to D4.

However, if the temperature setting knob 22 is used to turn the encoder 22E attached to the substrate 2 ', as described above, if the set temperature is displayed in the form of a bar-shaped display tube, The encoder 22E is rotated by 360 degrees or more when the approximate set temperature is known by the mark 22M of the knob 22 and the gauge 2G displayed on the resin sheet as in the present embodiment, You need to be careful not to. Therefore, when two pieces of plate piece 22F are formed inside the handle 22 and the stopper projection 2S is formed in the vicinity of the encoder 22E to rotate the handle 22, (2S) so that the handle (22) does not turn more than 360 DEG (260 DEG in this embodiment). If the knob 22 is rotated for more than a predetermined angle for some reason, the set temperature is immediately switched to the lowest temperature (error mode). If the knob 22 is not returned to the set angle range after three seconds or more elapses, Error indication (error code display and buzzer sounding) is performed and operation is stopped. If the signal of the encoder 22E returns normally before 3 seconds have elapsed, the error mode is canceled and the original control is continued.

When static electricity is charged on the surface of the operating portion 2 and the static electricity is sparked to the encoder 22E, the influence of static electricity from the substrate 2 'to the control portion 3 may be adversely affected . Incidentally, the cylindrical force 2W surrounding the base portion of the outer side of the encoder 22E is formed integrally with the frame piece 2F, which does not interfere with the plate piece 22F, by holding the substrate 2 ' Respectively. When the cylindrical wall 2W is formed as described above, the static electricity that penetrates through the handle 22 on the surface of the operation portion can be spark-discharged to the base portion of the encoder 22E without going up along the outer peripheral surface of the cylindrical force 2W It is possible to lengthen the surface-to-surface distance between the surface of the operation portion and the base portion of the encoder 22E, thereby preventing the spark discharge to the encoder 22E.

Next, an example of the cooking apparatus 1 provided with the operating unit shown in Fig. 3 (a) will be described with reference to Fig. 7, with reference to Fig. First, when the switch 2a is pressed once, the firing temperature input waiting state A by the knob 22 is entered. When the switch 22 is pressed twice, the preheating temperature input waiting state G is entered by the same knob 22, Each time you press A and G are switched. For example, if the temperature is set by turning the knob 22 in the state A, or if the operation is not performed for 3 seconds as it is, the state goes to the state B and the timer 23 enters the waiting state by the knob 23. When the timer is inputted, the start waiting state of C is established. However, in the state A, the handle 23 can be operated to shift directly to the start wait state of C. [ On the other hand, when the preheating temperature is set in the G state or three seconds elapses in the G state, the state is shifted to H and the preheating timer input standby state by the knob 23 is entered. When the timer 23 is inputted by the knob 23, And is in a standby state. If the timer 23 is input in the G state, the transition to I can be made directly. Further, between B and H and between C and I can be switched each time the switch 2a is pressed as in the case of A and G. Then, when the start switch 2e is pressed in the state C, the process shifts to D and the firing of the gas starts. When the door of the jigger 11 is opened during the firing, the firing is stopped and the firing is stopped. However, if the door is closed and the start switch 2e is pressed again, the time is returned to D and the remaining time firing is continued. Then, when one hour of timer set elapses, the operation is shifted to E and the cooking is finished, and the display tube 21 shifts to the clock mode and displays the time. In addition, when the start switch 2e is pressed in the I state, the preheating operation is started by shifting to J, but since the preheating timer is not necessarily set in the preheating operation, even if the start switch 2e is pressed in the G or H state, And the preheating operation is started. Here, when the door is opened to put the food into the cooking cavity 11, the state is shifted to M, and the state of waiting for the firing cooking timer is entered. Then, when the door is closed and the start switch 2e is pressed, the process proceeds to D and firing cooking is started. When the firing cooking timer is set before the door is opened in the L state, the operation is shifted to K. When the door is opened to insert the food into the cooking cavity 11, If the firing cooking timer has already been set at the end of the preheating operation, the operation directly shifts to K at J. When the state in which the switch 2a waits for the depression of the switch 2a as in the case of C &thetas; and the state in which the switch 2a has not been depressed for 5 minutes has passed, all the settings are canceled and the first clock mode is returned.

During the above operation, the display tube 21 displays the set temperature set by the handle 22 in each state of A, B, G, and H, but C, D, E, F, I, J, K In each state of L · M, the time is set to the timer display and the time set by the knob 23 and the remaining time in the set time are displayed. However, if a pulse signal is outputted from the encoder 22E by turning the knob 22 to change the temperature setting after switching to the timer display, the display is forcibly switched to the temperature display, the temperature is set and the output from the encoder 22E The display is returned to the timer display again when 3 seconds elapse.

However, in the preheating complete state indicated by K · L, the display of the display tube 21 is switched to the timer display, but there is a case where it is desired to know how many degrees Celsius it is. Thus, when the switch 2a is pressed, the display of the display tube 21 is switched to the display based on the internal temperature detected by the thermistor 1g only while the switch 2a is being pressed. However, when the temperature is set by turning the knob 22, the set temperature can be displayed on the display tube 21 every 1 deg. C, but in the case of not performing the firing cooking, it is necessary to set the temperature by 1 deg. On the other hand, if it is possible to set the temperature according to the elapse of 1 ° C, it becomes rather difficult to set. Therefore, in the present embodiment, when the temperature is set by turning the knob 22, the temperature is set in accordance with the elapse of 10 DEG C in the range of 100 DEG C or more. On the other hand, when the internal temperature detected by the thermistor 1g is displayed on the display tube 22, rather than displaying the actual internal temperature detected at intervals of 1 占 폚, It is convenient. When the set temperature set by the knob 22 is, for example, 190 DEG C, the temperature detected by the thermistor 1g is 182 DEG C (OFF temperature: the actual internal temperature is slightly higher than this) When the burner is extinguished and the detection temperature decreases to 178 ° C (ON temperature), it is re-ignited to maintain the internal temperature. When the set temperature is 200 占 폚, the OFF temperature is 191 占 폚 and the ON temperature is 187 占 폚. When the set temperature is 210 占 폚, the OFF temperature is 202 占 폚 and the ON temperature is 198 占 폚. As shown in FIG. 8, when the internal temperature is displayed on the display tube 21, the OFF temperature of each set temperature is used as a reference. For example, when the internal temperature exceeds 182 DEG C, which is the OFF temperature of the set temperature 190 DEG C (A), and 190 deg. C as the internal temperature. When the temperature is lower than 182 ° C, the display is returned from 200 ° C to 190 ° C (C). When the temperature exceeds 191 ° C, the display is again heated to 200 ° C (D) The display of 200 ° C is maintained until the set temperature exceeds 202 ° C, which is the OFF temperature of 210 ° C.

Incidentally, the control unit is provided with a predetermined storage unit as a storage unit. The control unit stores the time and the number of times of operation of the magnetron by accumulating the operation time of the magnetron regardless of the intensity of the electromagnetic wave to be output and stores the heating cooking time ) And the number of cooking times are accumulated and stored. The maintenance time and the like, as well as a cumulative total of the operation time and the number of times of operation.

In the above embodiment, the type of the operating portion is identified by the mounting pattern of the diodes D1 to D4, and the mounting pattern is electrically read by the control portion to determine the type of the operating portion. However, as shown in FIG. 9, The convex plate 4 is integrally formed on the frame body 2F at positions corresponding to the diodes D1 to D4 while the substrate 2 'is attached to the frame body 2F, If the upper portion of the convex plate 4 is cut out in accordance with the attaching pattern, even if another operating portion is attached, the diodes and the convex plate 4 interfere with each other and the other operating portions can not be attached. The position of the boss 5 for fixing the substrate 2 'by fitting to the hole 51 formed in the substrate 2' can be changed in accordance with the type of the substrate, so that it is possible to prevent the other operating portions from being misaligned. In addition, a direct hole provided for inserting and connecting the lead wire of the diode to the position where the diodes D1 to D4 are inserted is formed in accordance with the attachment pattern of the diode, and no direct hole is formed in a place where no diode is attached, It is also possible to make it impossible to attach it.

[Effects of the Invention]

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 with one display unit. In addition, even when the temperature is set in a state in which the cooking time is displayed, the cooking temperature can be set while viewing the display section by temporarily switching the time display to the temperature display, thereby facilitating setting of the cooking temperature.

Claims (1)

An apparatus for displaying a cooking temperature and a cooking time set by a setting operation unit, the apparatus having a temperature setting operation unit for setting a cooking temperature and a time setting operation unit for setting a cooking time, the apparatus being provided in a cooker for heating and cooking cooked food , The temperature setting operation unit is a rotary encoder, the rotation operation range of the encoder is limited to within 360 degrees, the scale for the set temperature is displayed in the vicinity of the handle attached to the encoder, and the temperature corresponding to the set temperature in the scale And a cooking time and a cooking time are alternately displayed on the display unit, and when the temperature setting operation unit is operated while the cooking time is displayed on the display unit, After the operation for the temperature setting operation unit is terminated from the operation time, until the predetermined time elapses, Display of the heating cooker, characterized in that for displaying the set temperature temporarily switched to the display portion displays the temperature.