JPS5919221Y2 - cooking equipment - Google Patents

Description

[Detailed description of the invention] The present invention provides a cooking device equipped with a rotation speed switching means for switching the rotation of a circulation fan between high speed rotation and low speed rotation, and a temperature controller, in which the set temperature of the temperature controller is set to a low temperature. range, the rotation speed switching means is switched to low speed rotation to prevent the food to be cooked from drying out, to enable effective cooking at low temperatures for a long time, and to ignite the main burner during the low speed rotation. First, it also allows cooking using only the ignition burner.

Next, this invention will be explained in detail with reference to a drawing showing one embodiment when applied to a gas composite cooking device.

This embodiment has the following four types of cooking functions.

A. Cooking using gas combustion hot air (hereinafter referred to as gas cooking) B. Cooking using high frequency radio waves (hereinafter referred to as electronic cooking) C. Cooking that performs gas cooking and electronic cooking at the same time (hereinafter referred to as simultaneous cooking) D. Switching to electronic cooking after gas cooking Cooking (hereinafter referred to as switching cooking) First, the first section shows a perspective view and a cut side view of the entire device.
The figures and FIG. 2 will be explained.

1 is an outer box, 2 is a cooking chamber provided in the outer box 1, 3 is a door that closes the front opening of the cooking chamber 2 in a heat-sealed and radio-sealed state, 4 is a handle of the door 3, and 5 is an outer box This is a temperature regulator provided on the front side of the cooking chamber 1, and sets the temperature inside the cooking chamber 2.

6 is a gas timer that sets the time for gas cooking; 7 is a cooking selection switch; when one button is pressed, the
, B, and C, and when the other button is pressed, the above-mentioned cooking mode is activated.

8 is a cooking start switch, 9 is an electronic timer that sets the time for electronic cooking, 10 is an interior light switch that turns on the interior light, and 11 is a gas cock lever.

12 is a gas supply pipe; 13 is a gas cock connected to the gas supply pipe 12 and opened and closed by the cock lever 11; 14 is a gas pressure regulator connected to the gas cock 13; 15 is a combustion chamber which is a hot air supply chamber; 16.17 18 is the ignition burner and main burner provided in the combustion chamber 15, S is the ignition burner solenoid valve, MV is the main burner solenoid valve, and 18 is the cooking chamber 2.
1M is a centrifugal fan installed at the back of the cooking chamber 2 to circulate hot air in the cooking chamber 2, 1M is a circulation fan motor that rotationally drives the fan 18 from outside the cooking chamber 2, A high-frequency oscillator 19 for supplying radio waves is a high-frequency irradiation chamber formed in the upper part of the cooking chamber 2 and partitioned by a heat-resistant partition plate 20 that is transparent to high-frequency radio waves. Supplied.

21 is a star rotatably provided in the high-frequency irradiation chamber 19; 22 is a rotary drive chamber formed in the upper part of the high-frequency irradiation chamber 19; 23 is a separate stirrer drive wheel rotatably provided in the rotary drive chamber 22; 24; is a connecting shaft that connects the separate wheel 23 and the star 21 together, and the blower motor supplies air that cools the high frequency oscillator M to the rotation drive chamber 22.
The separate wheel 23 rotates, the star 21 rotates, and the high-frequency radio waves supplied from the high-frequency oscillator M to the high-frequency irradiation chamber 19 are stirred.

On the other hand, the cooling air supplied to the rotation drive chamber 22 is
5 and is combined with exhaust gas from the combustion chamber 15 to an exhaust port 26 formed by a punched plate in the earthen wall of the outer box 1.
From there, it is discharged to the outside of the outer box 1.

Next, FIGS. 3 and 4, which show switching means that are switched by operating the gas cock lever 11, will be explained.

Reference numeral 27 denotes a board with a bending plate 28 formed on the front side, and the gas cock 13 is attached to the upper part of the back surface of the bending plate 28.

29 is a gas supply port to which the gas supply pipe 12 is connected; 30 is a cock closer of the gas cock 13 led out to the front side of the bending plate 28; 31 is an operating rod attached to the cock closer 30;
2 is a mounting plate fixed to the upper surface of the board 27 with screws 33; 34 is an arcuate hole formed through the stacked mounting plates 32 and the right and left sides of the board 27, respectively; 35 is the base of the cock lever 11; The pins 36 implanted on the right and left sides of the board 27 are pivots that pivot the base of the cock lever 11 applied to the lower surface of the base plate 27, and the position of the pivot 36 is in the inner arc-shaped hole 34.
The two pins 35 are located at the center of the arcuate hole 3 on the right and left side.
4 and is led out above the mounting plate 32.

Reference numeral 37 designates an operating hole transparently provided in the front part of the cock lever 11, into which the tip of the operating rod 31 is inserted.

38 is a right slide plate, 39 is a left slide plate, and both slide plates 38 and 39 are inserted into the through holes 42 provided on the right and left sides of the front plate 40 and rear plate 41 of the mounting plate 32 in the front and rear direction. It is slidably inserted into the

Reference numerals 43 and 44 indicate guide holes provided through the right and left slide plates 38 and 39, into which the right and left pins 35 are loosely inserted, respectively.

45 outputs the output of the high frequency oscillator M at high output (for example, 500
This is an output changeover switch that switches between low output (420 W) and low output (for example, 420 W), and when the actuating piece 45' is pressed, the contact opens and high output is output, and when the actuating piece 45' is not pressed, the contact closes. It is designed to output low output power.

46 is a gas-operated lamp switch, and its operating piece 46
When the actuating piece 46' is pressed, the contact opens and the gas-operated lamp is turned off, and when the actuating piece 46' is not pressed, the contact closes and the gas-operated lamp is turned on.

Reference numeral 47 denotes a gas cock switch, and when the actuating piece 47' is pressed, its contacts are closed and the gas combustion control device is activated, and when the actuating piece 47' is not pressed, the gas combustion control device is deactivated.

48 is a switch plate on which the three switches 45, 46, and 47 are arranged side by side from the right side, and is attached to the board 27 with screws 49, and the two operating pieces 45' and 46' on the right side are attached to the right slide plate 38. Opposing the rear end, the left operating piece 47' faces the rear end of the left slide plate 39.

50.51 is a terminal of each of the switches 45, 46, and 47, and is connected to a lead wire.

Now, the operation of the switching means using the cock lever 11 will be explained.

In the state shown in the plan view of FIG. 3a and the right side view of FIG. The gas cock 13 is closed by the cock closer 30,
Further, both pins 35 of the cock lever 11 are in a counterclockwise rotated position, and the right slide plate 38 moves rearward via the right pin 35 and the guide hole 43, and the output changeover switch 45
The actuating piece 45' of the gas-operated lamp switch 46 and the actuating piece 46' of the gas-operated lamp switch 46 are pressed, and the high-frequency oscillator M is in a state where it can output high output, and the gas-operated lamp is turned off.

On the other hand, the left slide plate 3 is inserted through the left pin 35 and the guide hole 44.
9 moves forward, and the actuating piece 4 of the gas cock switch 47
7' is not pressed and the gas combustion control device is not operating.

Next, when the cock lever 11 is moved to the left, the state shown in FIG. The piece 45' and the actuating piece 46' of the gas-operated lamp switch 46 are not pressed, and the high-frequency oscillator M
is in a state where it can output a low output, and the gas operation lamp lights up, while the left slide plate 39 moves rearward and presses the operating piece 47' of the gas cock switch 47, thereby operating the gas combustion control device.

Therefore, when the cook lever 11 is set to the right side, only electronic cooking is possible, and the output is automatically switched to high, allowing high-speed cooking.

In addition, when the cock lever 11 is set to the left side,
Gas cooking is now possible, and the output of electronic cooking is automatically switched to low output, so when cooking by combining gas cooking with electronic cooking, it is easy to set the usage time of electronic cooking because of the low output. On the other hand, in complex cooking, high output is not required for electronic cooking, and furthermore, even in complex cooking,
The amount of electricity used is reduced.

Further, as shown in FIG. 3D, in particular, in the output changeover switch 45, a connection terminal 53 is connected to the end of the lead wire 52 connected to one terminal 51, and the connection terminal 53 is connected to one end of the lead wire 52. When the connecting terminal 53 is removed from one terminal 51 and connected to the other terminal 50, both terminals 50 and 51 are short-circuited regardless of whether the actuating piece 47' is pressed or not. Even when the actuating piece 45' is pressed, the Mr. I output is output.

In other words, it is equipped with a maintenance means that can always maintain only the Lee output.

Note that this maintaining means may be configured such that the output selector switch 45 is moved backward so that the actuating piece 45' is not pressed at all times.

Therefore, in a cooking apparatus equipped with an output switching means for switching the output of the high frequency oscillator M between high output and low output, when the cooking apparatus is used in a place where the breaker would trip if used at high output, the maintenance means Since the output can always be maintained in a low output state, there is no need to prepare another type of cooking device that only has low output, and the cooking device equipped with the output switching means can be used until the electric capacity used is greatly improved. , after the capacitance has been improved, the maintenance means can be replaced and high power can also be used.

Next, depending on the set temperature of the temperature controller 5, the circulation fan 1
Regarding the rotational speed switching means for switching the rotational speed of 8, the operating structure of the temperature regulator 5 will be described with reference to FIG.

54 is the knob of the temperature controller 5, 55 is the shaft 5 of the knob 54
6 is a scale plate fixed to the front part and displays the temperature, 57 is a fixed pointer, 58 is a cam fixed to the rear of the shaft 56 of the knob 54, 59 is a cam lever whose base is pivoted, 60 is a cam lever 59 Fixed roller, 61 is cam lever 59
a spring 6 that urges the roller 60 to contact the cam 58;
2 is a recess formed in the cam 58, and when the temperature set by the knob 54 is in a low temperature range, for example 0 to 60°C, the roller 60 fits into the recess 62 and the cam lever 59 rotates. .

Reference numerals 63 and 64 denote a low-speed rotation switch and a main burner solenoid valve switch that are arranged in parallel at the tip of the cam lever 59, and when the set temperature of the temperature regulator 5 is in the low temperature range, the fifth
As shown in figure a, the actuating piece 63 of both switches 63, 64
', 64' are pressed by the cam lever 59, the low speed rotation switch 63 is switched to rotate the circulation fan 18 at low speed, and the main burner solenoid valve switch 64 is switched not to open the main burner solenoid valve MV. .

In addition, the temperature controller 5 may be set to a temperature other than the low temperature range, that is, 6
When the temperature is set to 0° C. or higher, as shown in FIG. 5, the operating pieces 63' and 64' of both switches 63 and 64 are not pressed by the cam lever 59, which is the opposite of the above.

Therefore, when the set temperature of the temperature controller 5 is in the low temperature range, the rotation speed of the circulation fan 18 is automatically switched to low speed rotation, so when cooking at a low temperature for a long time, the surface of the food to be cooked may become dry. For example, it is suitable for cooking bread, etc.

Further, when the circulation fan 18 rotates at the low speed, the main burner solenoid valve MV does not automatically open, and only the ignition burner 16 is used, so that cooking that requires a long time with a weak heat source can be effectively performed.

Next, FIG. 6, which shows a plan view of the burner, will be explained.

The ignition burner 16 and the main burner 17 are constructed by joining two planarly symmetrical plates 65, and gas nozzles 68 and 69 are connected to the gas feed ports 66 and 67 of both burners 16 and 17, respectively.
are placed facing each other.

In addition, 70.71 in the figure is the flame of both burners 16 and 17.

Next, FIG. 7 showing a wiring diagram of the apparatus of the above embodiment will be explained.

In the illustration, the plug p is connected to the AC power supply, the door 3 is opened,
When the cock lever 11 is set to the right side, that is, the gas cock 13 is closed, and one button of the cooking selection switch 7 is pressed, the above A is selected.

Cooking modes B and C are selected, and the contact 7-1 is closed as shown.

Therefore, the interior light LP is connected to the power source via the b contact of the door switch SW1 and the 20A current fuse F1 and is lit, the contact 45-1 of the output selector switch 45 is open, and the gas-operated lamp switch The contact 46-1 of 46 is open, and the gas-operated lamp PLI is off.

Next, cooking mode A, that is, gas cooking will be explained.

When the door 3 is closed, the door switch SW1 is switched to the b contact, the interior light LP is turned off, the latch switch SW2 is turned on, and the monitor switch SW3 is opened.

Next, when the temperature regulator 5 is set to the set temperature, its contact 5-1 is closed, and when the gas timer 6 is set,
The first contact 6-1 and the second contact 6-2 are closed, the third contact 6-3 is open, and when the cock lever 11 is set to the left, the contact 45- of the output changeover switch 45
1 is closed, the contact 46-1 of the gas-operated lamp switch 46 is closed, the gas-operated lamp PLI is lit, and the contact 471 of the gas cock switch 47 is closed.

Then, when the cooking start switch 8 is pressed, its contact 8-1 is closed, and the first relay LYI is connected to the power source by the latch switch SW2, the contact 8-1. Contacts 6-2 and 3
Contact LYI of the first relay LYI, which is connected via the A current fuse F2, the b contact of the door switch SW1, and the fuse F1, and is connected in parallel to the contact 8-1 of the start switch 8.
-1 is closed and self-maintained.

At the same time, the blower motor BM connected in parallel to the first relay LYI is driven, and the second relay LY2 is connected to contact 6.
-1, and contacts LY2- of the second relay LY2.
1 switches from the illustrated state to the other state.

At this time, if the set temperature of the temperature regulator 5 is set higher than the low temperature range, as explained in FIG. 5, the actuating piece 63' of the low speed rotation switch 63 is not pressed; The contact 63-1 is in the illustrated state,
Circulation fan motor FM connects to contact LY 2-1.63-1
It is connected to the power supply through the power supply and rotates at high speed.

On the other hand, the gas combustion control device GC is connected to the power source through the contacts 6-1.5-1゜47-1 and operates, and operates the ignition plug SP and the ignition burner solenoid valve S■ to control the ignition burner 16. is ignited, and the detection signal F that detects the flame of the ignition burner 16 is input to the gas combustion control device GC, and the gas combustion control device GC lights up the flame lamp LED based on the signal F, and also turns on the main burner solenoid valve. Outputs an activation signal to Mv.

At this time, as mentioned above, since the temperature regulator 5 is not set in the low temperature range, the actuating piece 64' of the main burner solenoid valve switch 64 is not pressed, and its contact 64 is not pressed.
-1 remains closed, the main burner solenoid valve MV is energized and activated, the main burner 17 is also ignited, and high-temperature gas cooking is performed.

By the way, when the set temperature of the temperature regulator 5 is set in the low temperature range of 0 to 60°C, the actuating piece 63' of the low-speed rotary switch 63 is pressed, and its contact 63-1 is pressed.
is switched to the terminal K of the fan control circuit FC from the illustrated state.

This fan control circuit FC has a function of rotating the fan motor FM at a low speed when the fan motor FM is connected to its terminal K.

Therefore, the fan motor FM rotates at a low speed.

Furthermore, in the case of the low temperature setting, the operating piece 64' of the main burner solenoid valve switch 64 is also pressed, and its contact 64' is also pressed.
-1 is open, even if an energization signal is output from the gas combustion control device GC to the main burner solenoid valve MV, the main burner solenoid valve MV does not operate, and only the ignition burner 16 is connected. Low-temperature gas cooking is performed.

Note that when the interior light switch 10 is pressed while the door 3 is closed, the contact 10-1 is closed and the interior light LP is turned on.

Further, during cooking, when the internal temperature reaches the set temperature or higher, the contact 5-1 of the temperature regulator 5 is opened, the gas combustion control device GC is deactivated, and the burners 16 and 17 are extinguished.

When the temperature inside the refrigerator falls below the set temperature, the contact 5-1 of the temperature controller 5 closes, and as described above, the gas combustion control device GC is activated to restart gas cooking and lower the temperature inside the refrigerator to the set temperature. Adjust to

Then, when the set time of the gas timer 6 comes, the contacts 6-1, 6-2 are opened and the contacts 6-3 are closed, so the contact LYI-1 of the first relay LYI is opened, and the power is cut off.
Prower motor BM, fan motor FM, second relay LY
2. The gas combustion control device GC becomes inactive, returns to its original state, and cooking ends.

When the door 3 is opened, the door switch SWI returns to the state shown in the figure, the interior light LP turns on, and at the same time the latch switch S
W2 is opened and monitor switch SW3 is closed.

This monitor switch SW3 blows out the fuse F1 when the latch switch SW2 becomes inoperable due to welding or the like, thereby preventing an accident.

Next, cooking mode B, that is, electronic cooking will be explained.

When the door 3 is closed and the cook lever 11 is set to the right side with the contact 7-1 of the cooking selection switch 7 closed, the contact 45-1 of the output selector switch 45 opens and the contact 46-1 of the gas operation lamp switch 46 opens. 1 is opened, the gas operation lamp PLI goes out, and the contact 47- of the gas cock switch 47 is opened.
1 is open.

Next, when the electronic timer 9 is set, its contact 9-1
．． 9-2 is closed.

Then, when the start switch 8 is pressed, the contact 8
-1 is closed, the first relay LYI is energized via the contact 92, the contact LY1-1 is closed and self-maintained, and the blower motor BM is driven.

On the other hand, since the second relay LY2 is not energized, its contact LY2-1 remains connected to the terminal K, and
Since the contact 63-1 of the low-speed rotation switch 63 remains as shown, the fan motor FM is rotated at a low speed by the fan control circuit FC.

In addition, the electromagnetic switch LY3 is connected to the contacts LYI-1, 9-1 and the overheat prevention switch Th of the high frequency oscillator M, the contact 7-1.
or 6-3, connected to the power supply via fuse F2,
The contact points LY 3-1 and LY 3-2 provided at both ends of the primary winding Ta of the high voltage transformer T are closed.

Therefore, the electronically operated lamp PL2 is turned on and an input is applied to the primary winding Ta of the high voltage transformer T.

On the other hand, the high-voltage capacitor circuit C' connected to the secondary winding Tb of the high-voltage transformer T includes a main circuit consisting of a first capacitor C1 and a first resistor R1 connected in parallel, and a second capacitor C2 connected in parallel. The auxiliary circuit consists of a second resistor R2 and a rectifier diode D', and the auxiliary circuit is connected in parallel to the main circuit via a contact 5OL-1.

Then, the DC high voltage of the high voltage capacitor circuit C' is supplied to the high frequency oscillator M via the tertiary winding Tc of the high voltage transformer T, and when the contact 5OL-1 is closed, a high output of 500
W, a low output of 420W is output when open.

By the way, the contact 5OL-1 is connected to the output selector switch 4.
When the contact 45-1 of No. 5 is closed, the solenoid SQL connected in series to the contact 45-1 is operated and opened.

Therefore, in this B cooking mode, the contact 45
-1 is open, solenoid SQL does not operate, and its contact 5QL-1 is closed, high output is output from high frequency oscillator M, and electronic cooking is performed.

Then, when the set time of the electronic timer 9 comes, the contact 9
-1.9-2 is open and the contact LY of the first relay LYI
I-1 is open, and the blower motor BM and fan motor F
M, electromagnetic switch LY3 is deactivated, contact LY3-1
．． LY3-2 is opened and electronic cooking ends.

Next, cooking mode C, ie, simultaneous cooking in which gas cooking and electronic cooking are performed simultaneously, will be explained.

With the door 3 closed and the contact 7-1 of the cooking selection switch 7 closed, the temperature controller 5 is turned on as in the cooking mode A above.
Set the temperature to the set temperature, set the gas timer 6, set the cock lever 11 to the left side, set the electronic timer 9, and press the start switch 8.

In this case, by closing the contacts 6-1.6-2 of the gas timer 6, gas cooking similar to that in cooking mode A is performed, and at the same time, the contacts 9-1, 9-2 of the electronic timer 9 are closed.
Electronic cooking is performed by closing the output switch 45, but since the actuation 45' of the output changeover switch 45 is not pressed, its contact 45-1 is closed, energizing the solenoid SQL, and driving the solenoid SQL. Therefore, the contact point 5Q
Since L-1 is opened, the auxiliary circuit of the high-voltage capacitor circuit C' is disconnected, and the output of the high-frequency oscillator M becomes the I output.

That is, in the case of simultaneous cooking in cooking mode C, electronic cooking is performed at low output.

Next, a description will be given of the aforementioned cooking mode, that is, switching cooking in which cooking is performed by switching to electronic cooking after gas cooking.

First, press the other button of the cooking selection switch 7 and
Select the cooking mode.

In this case, the contact 7-1 of the cooking selection switch 7 is opened.

Then, as in cooking mode C, set the temperature regulator 5, gas timer 6, and electronic timer 9, and set the cook lever 1.
1 on the left side and press the start switch 8.

At this time, by setting the gas timer 6, the contact 6-
3 is open, and the contact 7-1 of the cooking selection switch 7
Since both are open, the energizing circuit for the electronic timer 9, solenoid SQL, and electromagnetic switch LY3 is not formed, and as in the case of cooking mode A, only gas cooking is performed first.

Then, gas cooking is completed and the contact 6-3 of the gas timer 6
When is closed, the energizing circuit is formed and electronic cooking continues.

In addition, in electronic cooking in this case, the cock lever 11 is set to the left side, the solenoid SQL is activated, and its contact 5
Since QL-1 is open, low-output electronic cooking is performed.

As described above, according to the cooking device of this invention, there is a cooking chamber provided in the outer box, a door that closes the front opening of the cooking chamber in a heat-sealed state, and a door provided in the outer box that allows hot air to flow through the cooking chamber. A gas combustion chamber that supplies gas into the cooking chamber, an ignition burner and a main burner provided in the gas combustion chamber, a fan that circulates hot air within the cooking chamber, and a rotation that switches the circuit of the fan between high-speed rotation and low-speed rotation. a speed switching means, a temperature regulator for setting the temperature in the cooking chamber, a cam interlocked with a knob of the temperature regulator, a cam lever that rotates in contact with the cam, and a low temperature range of the temperature regulator. a low-speed rotation switch that is activated by the rotation of the cam lever and switches the rotation speed switching means to low-speed rotation when set to , and a main burner solenoid valve switch that ignites only the ignition burner and switches the main burner solenoid valve so that it does not open. By providing this, it is possible to prevent the food to be cooked from drying out due to the high speed rotation of the fan when cooking at low temperatures.

Furthermore, during low-temperature cooking, by switching the fan to low-speed rotation and cooking only with the ignition burner without igniting the main burner, it is possible to maintain a low temperature with little overshoot.

Furthermore, the structure is simple and can be obtained at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment in which the cooking device of this invention is applied to a gas compound cooking device, in which FIG. 1 is a perspective view, FIG. 2 is a cutaway side view, and FIG. 3 is a switching means. is a plan view,
Figure 4 is a right side view, Figure C is a plan view with the cock lever set to the left, Figure 4 is a partial right side view when the retaining means is applied, and Figure 4 is an exploded perspective view of the switching means. Fig. 5 shows the rotation speed switching means of the circulation fan, Fig. 5a is a front view of the temperature controller, Fig. 6 is a diagram of the operation of Fig. 6, and Fig. 7 is a wiring diagram. . 1... Outer box, 2... Cooking room, 3...
...Door, 5...Temperature controller, 6...
Gas timer, 11... Cock lever, 13...
... Gas cock, 15 ... Hot air supply room, 1
6... Ignition burner, 17... Main burner, 18... Fan, 31... Operating rod, 47... Gas cock switch, 58 ...
...Cam, 59...Cam lever, 63...
...A speed rotation switch, 64... Solenoid valve switch for main burner, FM... Fan motor, Mv... Solenoid valve for main burner.

Claims (1)

[Scope of utility model registration request] A cooking chamber provided within the outer box, a door that closes the front opening of the cooking chamber in a heat-sealed state, a gas combustion chamber provided within the outer box that supplies hot air into the cooking chamber, and the gas combustion chamber. An ignition burner and a main burner provided in the cooking chamber, a fan for circulating hot air in the cooking chamber, a rotation speed switching means for switching the rotation of the fan between high speed rotation and low speed rotation, and setting the temperature in the cooking chamber. a temperature regulator, a cam interlocked with a knob of the temperature regulator, a cam lever that rotates in contact with the cam, and a cam lever that is actuated by rotation of the cam lever when the temperature regulator is set to a low temperature range to cause the rotation of the temperature regulator; A cooking device equipped with a low-speed rotation switch that switches a speed switching means to low-speed rotation, and a main burner solenoid valve switch that switches so that only the ignition burner is ignited and the main burner solenoid valve is not opened.