JPH02213612A - Control device for gas appliance - Google Patents

Abstract

PURPOSE:To prevent the upstream cock for gas from being left opened through forgetting by detecting an act of setting timer-controlled operation and by executing the procedure for igniting the burner so as to reject the setting of timer-controlled operation and signal a warning when the burner is not ignited. CONSTITUTION:A microcomputer 44 contains a reservation timer 58 for starting cooking at a set time, a combustion control means 59 for turning on and turning off a gas burner 8 by controlling an ignition circuit 52, a solenoid valve-drive circuit 54, and the like, and a warning means 60 for signaling a warning by an indicator 23 at the time of an abnormal occurrence or the like. When the reservation timer is set, the warning means 60 makes the combustion control means 59 actuate an ignition circuit 51, a solenoid valve-drive circuit 53, and a flame detective circuit 57 to ignite the gas burner 8; when the flame detective circuit 57 produces an output signaling detection of ignition of the gas burner 8, the setting of the reservation timer becomes effective and, for example, a set reservation indicator 32 is lighted to show the setting. If the gas burner 8 is not ignited even after actuation of the ignition procedure for a specified set time, the setting of the timer is rejected and a warning is signaled, for example, by turning on-and-off the set reservation indicator 32.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for gas appliances equipped with a reservation timer, such as gas fan heaters, gas ovens with bakery functions, and the like.

(b) Conventional technology Mainly in air conditioning equipment such as air conditioners and fan heaters, there is a means to notify even if a timer is set with the main gas valve closed, as shown in Japanese Patent Publication No. 63-12226. There is a problem that the burner cannot be ignited even if automatic operation is started using a timer.

(c) Problems to be Solved by the Invention The object of the present invention is to prevent forgetting to open the main gas valve when setting a timer for starting automatic operation.

(d) Means for solving the problem The present invention provides a reservation timer for setting a reservation for the start time of operation;
In a device comprising a timer operation setting means for setting a reserved operation using the reservation timer and a combustion control means for controlling burner combustion, the timer operation setting operation by the timer operation setting means is detected and the burner is ignited. A warning means is provided which prohibits reception of timer operation and issues a warning when the burner is not ignited.

Further, a pressure detection means is provided to detect the pressure between the solenoid valve provided in the gas flow path to the burner and the hose end, and a timer operation setting operation by the timer operation setting means is detected, and the burner ignition operation is simultaneously performed. A warning means is provided for detecting the output of the pressure detecting means and issuing a warning when the output of the pressure detecting means is less than a set pressure.

(E) When the reservation timer is set by the action timer operation setting means, the burner is ignited by the warning means, and when the burner is not ignited, reception of timer operation is prohibited and a warning is issued, such as forgetting to open the main gas valve, etc. prevent.

(f) Embodiment An embodiment of the present invention will be explained based on FIG. 1 using a bakery-fi equipped gas oven as an example. 3), and a ventilation chamber (6) in which a circulation fan (5) is housed is defined in the inner part of the cooking chamber via a distribution plate (4). A door (7) is attached to the opening (2) so as to be openable and closable.

Further, a combustion chamber (10) is formed below the cooking chamber (3), in which a gas burner (8) is installed with its flame hole (9) facing backward, and the rotation of the circulation fan (5) causes the gas burner ( 8) from the left and right sides of the distribution plate (4) into the cooking chamber (3).
).

On the other hand, a bread kneading container (12) is detachably attached to the bottom plate (11) of the cooking chamber (3), and
A kneading blade (13) is arranged at the inner bottom of this bread kneading container, and this kneading blade is rotationally driven by a pulley motor (14) mounted below the bottom plate (11).

(15) is a gas flow path that supplies gas fuel to the gas burner (8), one end of which is connected to a hose end (16) attached to the lower back of the cooker main body (1), and the other end of which is connected to a gas nozzle ( 17), and electromagnetic on-off valves (18) and (19) are installed in the middle.

In Fig. 2, (20) is an operation panel attached to the front of the cooking device main body (1), with reservation keys (
21) and a time setting key (22), and a display (23) made of, for example, a fluorescent display tube is mounted on the right side of these, and a microwave oven key (22) is mounted on the right side of this display.
24), handmade key (251), high-speed range key (26)
, a bakery key (27), a timer knob (28), a temperature setting knob (29), a start key (30), and a cancel key (31), as well as the microwave key (24) and a handmade key ( 25), high-speed range key (2
6), the bakery key (27) has an indicator lamp (
24°) (25°) (26') (27') are installed.

The display (23) also includes a reservation setting display (32), a clock setting display (33), a time display (34), and an error display (3).
5), No pot display (36), Continuous combustion display (37), High temperature display (38), Fermentation setting display (39), Gas combustion display (40), Cooking course display (411, Process display (42)
, a temperature display (43) is provided.

In FIG. 3, (44) is a microcomputer equipped with a program for controlling the gas burner (8), circulation fan (5), pulley motor (14), etc., and the input (45) is the above-mentioned keys <211 <221 < 241 <251 <26
1 (27+ (30) (311), the input (46) has the above-mentioned timer knob (28) and temperature setting knob (29), respectively.
The timer setting device (47) and temperature setting device (
48), and the output (49) is connected to the spark plug 1 installed in the flame hole (9) of the gas burner (8).
501 (see Figure 1).
1), the output (52) is the above-mentioned electromagnetic on-off valve f18) f1
9) Solenoid valve drive circuit (53) that opens and closes, output (5
4) are connected to the above-mentioned indicators +231 (see Fig. 2), and to the input (55), the flame rod (56) installed in the flame hole (9) of the gas burner (8) indicates the presence or absence of combustion flame. A flame detection circuit (57) is connected to detect the flame.

The microcomputer (44) also includes a reservation timer (58) that starts automatic bread cooking at a set time, and controls the ignition circuit (52), electromagnetic valve drive circuit (54), etc. to control the gas burner ( 8) Combustion control means (59) that performs blinking control
), and a warning means (60) for issuing a warning using the display (23) or a buzzer (not shown) or the like when an abnormality occurs.

First, when performing general microwave cooking, the bread kneading container (12) in the cooking chamber (3) is removed, a turntable (not shown) is attached, and the food to be cooked is placed on this turntable. After closing the door (7), press the microwave key (24), turn the timer knob (28) to set the cooking time, and press the start key (30).

On the other hand, when performing automatic bread making cooking, the bread kneading container (I
2) After setting ingredients such as flour inside, place the bread kneading container (12) into the cooking chamber (3) and close the door (7). Next, when the bakery key (27) is pressed, the cooking course display (41) lights up, the total cooking time is displayed on the timer display (43), and the start key (30) is pressed.
Press to start cooking.

If you want to use the timer to perform the automatic bread cooking, first press the reservation key (21), then press the timer knob (28).
Turn to set the "hour" you want to finish cooking, then press the reservation key (21) again, then turn the timer knob (28) again to set the "minute", then press the reservation key (21) to set the reservation time. (This time is memorized once set), and if you want to bake the bread at the time set above, first press the bakery key (27), then press the reservation key (21), Finally, by pressing the start key (30), the reservation timer (58) is activated and set (therefore, the reservation key T 21 + and the start key (30) constitute timer operation setting means).

At the same time, the warning means (60) activates the combustion control means (5).
9) to the ignition circuit (51) and the solenoid valve drive circuit (53).
), the flame detection circuit (57) is activated, and the gas burner (8) is activated.
ignition operation is performed, and if ignition of the gas burner (8) is detected by the output of the flame detection port 28 (571), a reservation timer is set and, for example, a reservation setting display (32) is lit.

On the other hand, if the gas burner (8) does not ignite even after the above-mentioned ignition operation is carried out for the predetermined period of time, a warning such as a buzzer or the above-mentioned reservation setting display (32) blinks, and the above-mentioned timer cellar) is not received. prohibit.

In the above embodiment, gas supply to the gas flow path (15) is detected by igniting the gas burner (8) when the reservation timer is set. A pressure sensor (61) is installed between (16) and the electromagnetic on-off valve (19), and this pressure sensor is connected to the input (62) of the microcomputer (44), so that the timer can be set for a very short time. Gas gas flow path (19)
It may also be possible to detect the gas supply to the gas burner (8) during the setting operation of the above-mentioned reservation timer.
The ignition operation can be performed in a short time.

Also, when the pressure sensor (61) is used, a warning is issued if the output is less than the set pressure, and at the same time, reception of reservation timers is prohibited.

(G) Effects of the Invention With the configuration according to the present invention, in a gas appliance equipped with a reservation timer, it is possible to reliably prevent forgetting to open the gas main valve when setting the reservation timer, and to prevent failures due to forgetting to open the gas valve. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a side longitudinal sectional view of a cooking appliance according to the present invention, FIG. 2 is a front view of the operation panel, and FIG. 3 is a block diagram. (8)...Gas burner, (15)...Gas flow path, (
16)...Hose end, (+81 +191...
Solenoid on/off valve, (58)... Reservation timer, (59).
... Combustion control means, (60) ... Warning means, (61)
...Pressure sensor applicant Sanyo Electric Co., Ltd. and one other agent Patent attorney Takuji Nishino (two others) Figure 1 Figure 3

Claims (2)

[Claims] (1) In a device equipped with a reservation timer for setting a reservation start time, a timer operation setting means for setting a reservation operation using the reservation timer, and a combustion control means for controlling burner combustion, the timer operation setting is described above. A warning means is provided which detects the timer operation setting operation by the means, performs the ignition operation of the burner, and prohibits acceptance of the timer operation and issues a warning when the burner is not ignited,
Control device for gas appliances. (2) Provide pressure detection means for detecting the pressure between the solenoid valve provided in the gas flow path to the burner and the hose end, and detect the timer operation setting operation by the timer operation setting means to ignite the burner. 1. A control device for a gas appliance, comprising a warning means that detects the output of the pressure detection means at the same time as the operation is performed, and issues a warning when the output of the pressure detection means is less than a set pressure.