JPH0217530Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention installs a main food stove, a side food stove, a cooking utensil, etc. on the trailer platform, and automatically cooks rice while driving outdoors. This invention relates to a reflux-type rice cooker for use in outdoor cooking vehicles.

"Conventional technology" Conventionally, in reflux rice cookers for outdoor cooking cars,
There is a stove for main food, a stove for side food on the trailer platform,
For example, a model equipped with a cooker or the like that allows you to cook rice while driving is
31172 Publication and Utility Model Publication No. 60-25948, which were developed by the present applicant and are well known, these rice cookers can be used to cook a large amount of rice by lowering the rice cooker while driving or from a trailer stand. However, it does not have an automatic extinguishing function when rice cooking is completed.
The burner was extinguished manually. For this reason, burnt rice is likely to occur due to a delay in extinguishing the fire, making it difficult to obtain good cooked rice in the same state. Another drawback is that the outer pot is likely to overheat and burn out due to a delay in extinguishing the fire.

``Problems that can be solved by this invention'' This invention solves the conventional problems by attaching an automatic fire extinguishing device to the staple food oven, which automatically stops the supply of fuel and extinguishes the burner when rice cooking is completed. It is an object of the present invention to provide a reflux type rice cooker for an outdoor cooking car with an automatic fire extinguishing device that can automatically cook rice uniformly and well.

"Means for Solving the Problem" To explain the present invention with reference to the drawings, Fig. 1 is a side sectional view of the reflux type rice cooker for an outdoor cooking car according to the present invention.
FIG. 2 is a connection diagram between the burner of the rice cooker and the portable fuel tank.

1 is the main body of the rice cooker, and a burner 2 is installed at the center of the bottom. 3 is a lid which is adapted to press and seal the upper edge of an outer pot 4 installed in the furnace main body 1 by means of a fixing clamp.
Also, inside the outer pot 4, two inner pots 5, 5 each having a lower skirt portion 5a have one side of their upper edges close to each other, and there is a relatively wide width between the two inner pots 5, 5 and between the outer pot 4. It is designed to be loaded through a narrow surrounding hot water passage 4a. The surrounding walls 5b of the inner pots 5, 5 are respectively sloped walls facing inward from the upper edge to the lower edge, and the outer pot inner wall 4b is between the two inner pots 5, 5 loaded in the outer pot 4. A hot water passage 4c having an elongated and generally inverted triangular cross section is formed between the two. The lower skirt portion 5a is provided with a large number of notched holes 5c along the entire circumference, and the bottom portion of the inner pot 5 surrounded by the surrounding hot water passage 4a, the elongated substantially triangular hot water passage 4c, and the lower skirt portion 5a is Everything is interconnected. In addition, a large number of small holes 5f are bored in the partition plate 5d and the bottom 5e of the inner pot 5, and a lid plate 5h, which also has a large number of small holes 5g, is placed over the top.
Steam and hot water are circulated over the entire area surrounding each inner pot 5,5. Burner 2 uses kerosene and gasoline from the fuel tank under the vehicle body when cooking while driving.
When using the rice cooker off the trailer platform, use a portable fuel tank. This portable tank is a combination of one kerosene tank 7 and one gasoline tank 8, but the kerosene tank 7 has a pressurized air inlet 9, a kerosene inlet 10, a kerosene valve 11, and an air valve 12. The gasoline tank 8 is attached with a gasoline inlet 13 and a gasoline valve 14, and both tanks are connected with air through a pressure equalizing pipe 15 attached to the upper part of the tank, so that both fuels can be supplied. It is designed to be pressurized to a normal pressure of approximately 3 kg/cm ² .

The air valve 12, the kerosene valve 11, and the gasoline valve 14 are all collectively connected to a fuel pipe A16, and the other end of this fuel pipe A16 is connected to an automatic fire extinguishing system 17, which will be described later. Furthermore, the fire extinguishing device 1
7 is connected to the burner 2 through a fuel pipe B18 and is supplied thereto.

Although this proposal only describes portable fuel tanks, it is not limited to this.
If the fuel tank has the same function as this, when cooking rice by loading it on a general vehicle other than the above trailer, there is no problem in moving it onto the vehicle or on the ground and connecting it to this reflux rice cooker. In this case, exactly the same effect can be obtained.

FIG. 3 is a side sectional view of the temperature-sensitive switch of the present invention, FIG. 4 is a front view thereof, and FIG. 5 is a partially sectional side view of the fuel valve. 19 is a temperature-sensitive plate in the shape of a convex lens attached to the bottom of the outer pot 4;
0 is a bimetal that is closely held on this temperature sensitive plate. This bimetal 20 connects the outer pot 4 to the stove body 1.
When set to , it comes into contact with one end of the actuating rod 21 of the automatic fire extinguishing system and is interlocked with the temperature sensitive switch 22 .

Next, the structure of the temperature-sensitive switch 22 will be explained in detail with reference to FIGS. 3 and 4. Reference numeral 23 is a switch main body, which is attached to the entrance of the furnace main body. A switchbox 25 is suspended within the main body 23 via a pressure spring 24. A closed gutter-like arm 26 is attached to the back side of the switch box 25, and a tight ring 27 is attached to the tip of this arm so that the switch box 25 is integrated.

The integrated switch box 25 and the like and the switch main body 23 are supported by a pressure spring 24 and a fulcrum A28, and the repulsive force of the pressure spring 24 pushes the contact ring 27 upward. so that it sticks to the bottom of the outer pot. In this way, the contact ring 27 is attached to the temperature sensitive plate 1.
It serves to protect the bimetal 20 and mechanisms such as the actuating rod 21 that are interlocked with the bimetal 20. The bimetal 20 is connected to the temperature-sensitive plate 19 by a stop ring 29. When the outer hook 4 is set in the furnace, a support rod 30 is pressed against the center back surface of the bimetal 20, and the support rod 30 is connected to the operating rod 21 via a pin 31.
is connected to one end of the The actuating rod 21 is pivoted at its center of gravity by a fulcrum B32 so as to be located on the central axis of the arm 26, and the other end is connected to a U-shaped leaf spring attached to the inner surface of the other end of the arm 26. It is locked at 33. For this reason, the leaf spring 33
The support rod 30 is always pushed up by the elasticity of the bimetal 20 and the temperature-sensitive plate 19 is pressed against the bimetal 20. In other words, in this case, the support rod 30,
It has a structure in which a connecting member for the actuating rod 21 and the actuating rod 21 are built in, and the supporting rod 30 is pressed against the bimetal 20.
Further, the operating rod 2 is provided in the switch box 25.
1 protrudes from the other end, and a fuel valve 34 that interlocks with this is built-in.

FIG. 5 is an enlarged cross-sectional view of this fuel valve 34. A valve shaft 37 having a valve 36 at one end passes through the center of the valve body 35, and the valve body is directly above the center of the valve shaft 37. 35 is provided with an oil passage hole 38, and the other end is connected to a fuel pipe B18. valve 36
and the oil passage hole 38 are communicated with each other by a slit 39 provided around the valve shaft 37. In the normal state when the valve 36 is open, the fuel sent from the tank flows from the fuel pipe A16 to the area around the valve 36. The burner 2 is supplied with oil through a fuel pipe B18 through a slit 39 and an oil passage hole 38. In addition, the valve stem 3
The other end of 7 is supported by a spring 40 and a guide 41, and a set button 42 is attached to the end thereof.

On the other hand, the upper surface of the end of the operating rod 21 is in contact with a stopper presser 43, which is pivotally supported at one end of the guide 41 via a fulcrum C44, and via a stopper presser spring 45. A stopper 46 is supported under pressure.
The tip of this stopper 46 is formed into a wedge shape, and is adapted to engage and lock with a stop groove 47 provided on the shaft of the set button 42, thereby holding the valve 36 in an open state. There is. Therefore, when the end of the actuating rod 21 rises, the stopper presser 43 is pushed up, the stopper 46 rises, the stopper 46 and the stop groove 47 are disengaged, the valve 36 is closed, and the fuel supply is cut off. FIG. 5 shows this state. 48 is a stopper guide for holding the stopper 46.

"Operation" When the present invention is used to cook rice on the ground, it is operated according to the following procedure.

(1) Lower the reflux rice cooker from the trailer stand,
Connect the fuel pipe A16 of the portable fuel tank to this.

(2) Place the outer pot 4 containing a predetermined amount of rice and water on the stove body 1. Temperature sensitive plate 19 and tight ring 27 of outer pot
Since these are pressed against each other, the supporting rod 30 is pressed against the central portion of the lower surface of the bimetal 20 by the repulsive force of the leaf spring 33.

(3) Press the set button 42 and place the valve 36 in the open position. That is, the stopper 46 is connected to the stop groove 47.
The valve stem 37 moves to the left and the valve 3
6 is released.

(4) Open the air valve 12 and gasoline valve 14.

(5) Light burner 2 and start cooking rice. The water in the outer pot and inner pot eventually boils, and countless steam bubbles are formed in the water, which expand and increase the volume of water, and steam accumulates at the bottom of the outer pot. The hot water is pushed up from each hot water passage 4c between the outer pot and the inner pot, and is poured onto the rice layer. This hot water passes between the rice grains, and the partition plate 5d of the inner pot has many small holes.
Then, it returns to the lower skirt part 5a through the bottom part 5e, which also has a large number of small holes, and is pushed up again.

As the boiling water circulates in this way, the rice turns into rice, and finally the boiling water runs out and the rice cooking is complete.

(6) As rice cooking approaches the end, the temperature at the bottom of the outer pot begins to rise rapidly. Next, when the temperature-sensitive plate reaches the sensing temperature of the bimetal, the bimetal 20 reverses and pushes the support rod 30 downward. In conjunction with this, the end of the actuating rod 21 inside the switch box 25 is pushed up, pushing up the stopper presser 43. In conjunction with this, the stopper 46 rises and is disengaged from the stop groove 47, so that the valve shaft 37 of the set button 42 moves due to the repulsive force of the spring 40, closing the valve 36. (Situation shown in Figure 5) The fuel supply is cut off and burner 2 immediately extinguishes. In this way, the burner is automatically extinguished and the rice cooking is completed.

"Effects" (1) In the rice cooker of the present invention, a switchbox 25 is suspended in a switch main body 23 attached to the furnace main body by a pressure contact spring 24, and the tight ring 27 at the tip of the switchbox is suspended by this repulsive force. Built-in supporting rod 30 and bimetal 20 that are pressure-contacted to the bottom of the outer pot.
Equipped with an automatic fire extinguishing system that connects the Therefore, the bimetal 20 sensitively detects the temperature at the bottom of the pot and operates the temperature-sensitive switch 22, which has good sensitivity and extremely reliable operation. In addition, the contact ring 27 completely blocks and protects the bimetal 20 from boiling over, dust, etc. that occur during cooking, so it protects the bimetal 20 from vibrations while driving, dust, etc.
Fully automatic fire extinguishing function is possible without being affected by wind and rain.

(2) After ignition, rice cooking is completed without the need for any human intervention, so when cooking rice in multiple ovens at the same time as in the past, there is no variation in the quality of the rice in each rice cooker, and the rice is cooked evenly and well. can be obtained. This idea made it possible for the first time to efficiently cook large amounts of rice.

(3) Since no power source is used, there are no electrical failures and the reliability is extremely high. Moreover, since it is robust, it can withstand continuous use for a long time.

(4) It is easy to operate, even beginners can use it immediately, and there is no possibility of rice cooking failure due to incorrect operation.

(5) The outer pot 4 will not be deformed by burnout due to overheating of the burner, and the service life of the outer pot can be significantly increased.

[Brief explanation of drawings]

Figure 1 is a side sectional view of the proposed reflux type rice cooker. Figure 2 is a connection diagram between the burner of the rice cooker and the portable fuel tank. Figure 3 is a side sectional view of the temperature-sensitive switch. Fourth
The figure is also a front view. Figure 5 shows fuel valve 1.
Partial cross-sectional side view. 1: Furnace body, 2: Burner, 3: Lid,
4: Outer pot, 4a: Surrounding hot water passage, 4b: Outer pot inner wall, 4c: Hot water passage, 5: Inner pot, 5a: Lower skirt, 5b: Surrounding wall, 5c: Notch hole, 5d: Partition plate, 5e :bottom, 5f: small hole, 5g: small hole, 5
h: cover plate, 6: fuel tank, 7: kerosene tank,
8: Gasoline tank, 9: Pressure air inlet, 1
0: Kerosene injection port, 11: Kerosene valve, 12: Air valve, 13: Gasoline injection port, 14: Gasoline valve, 15: Pressure equalization pipe, 16: Fuel pipe A, 17:
Automatic fire extinguishing system, 18: Fuel pipe B, 19: Temperature-sensitive plate,
20: Bimetal, 21: Operating rod, 22: Temperature-sensitive switch, 23: Switch main body, 24: Pressure contact spring, 2
5: Switch box, 26: Arm, 27: Close ring, 28: Fulcrum A, 29: Stop ring, 3
0: Support rod, 31: Pin, 32: Support B, 33: Leaf spring, 34: Fuel valve, 35: Valve body, 36:
Valve, 37: Valve shaft, 38: Oil hole, 39: Slit, 40: Spring, 41: Guide, 42: Set button, 43: Stopper presser, 44: Fulcrum C, 45: Stopper presser spring, 46: Stopper, 47: Stop groove, 48: Stopper guide.

Claims (1)

[Scope of utility model registration request] A burner is provided at the center of the bottom of the furnace body, an outer pot is mounted so as to fit into the furnace body, and two inner pots each having a lower skirt portion are placed close to each other with one side of their upper edges close to each other. A relatively narrow peripheral hot water passage is provided between the inner pot and the outer pot for charging, and the peripheral side walls of both inner pots are formed into inwardly inclined walls from the upper edge to the lower edge. A hot water passage having an elongated and generally inverted triangular cross section is formed between the inner pots and the inner wall of the outer pot, and a large number of notched holes are provided along the entire circumference of the lower skirt portions of both inner pots. A reflux type rice cooker for a car is equipped with a temperature-sensitive plate 19 attached to the bottom of the outer pot of the main food stove and a bimetal 20 that is in close contact with the plate, and the temperature-sensitive change of the bimetal is detected by the operating rod 21 via the support rod 30. be connected so that they are interlocked with each other, and these connected objects are
Close contact ring 27, arm 26 and switch box 2
5 are connected to each other in an integrated body, and the integrated body is supported within a switch main body 23 formed by screwing onto the furnace main body 1 by a pressure contact spring 24 and a fulcrum A28, and a switch box. A fuel valve 34 that opens and closes in conjunction with the rise of the end of the actuating rod 21 is built into the fuel valve 25, and the fuel valve 34 is used to connect the fuel tank 6 under the trailer body, a portable fuel tank, or a portable fuel tank loaded on another vehicle. fuel pipe A16 to the burner and fuel pipe B1 to the burner
A reflux type rice cooker for an outdoor cooking car equipped with an automatic fire extinguishing device made by connecting 8.