JP4555877B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove that is planned to improve thermal efficiency.

FIG. 9 is a front view showing a conventional gas stove.
A point / fire extinguishing button (11) for the gas burner (2) is arranged on the front surface of the stove body (1), and a thermal power slidable in the lateral direction is provided above the point / fire extinguishing button (11). An adjustment knob (S) is provided, and the heating power of the gas burner (2) can be set by sliding the heating power adjustment knob (S).

Further, in this gas stove, rice cooking can be performed by burning the gas burner (2) while monitoring the output of the temperature sensor (19) for detecting the pan bottom temperature. As shown in FIG. A rice cooking display (41) for setting a suitable heating power is formed on the sliding area of the heating power control knob (S). Accordingly, when the gas burner (2) is burned with the heating power adjustment knob (S) aligned with the rice cooking display (41), it can be burned with the heating power suitable for cooking and proper cooking can be performed.
Japanese Patent Laid-Open No. 10-337251 (FIGS. 1 and 3)

  On the other hand, due to the recent strong demand for effective use of energy resources, improvement of thermal efficiency has become an important theme in the development of gas stove technology, and there are various things such as the shape of the top plate of the stove body (1) and the gas burner (2). From the viewpoint of this, methods for improving thermal efficiency have been intensively studied.

Under such a background, an object of the present invention is to enable heating with high thermal efficiency even in a particularly large pot.

[ Invention of Claim 1 ]
The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
`` In a gas stove equipped with a sliding or rotating thermal power adjustment knob for setting the thermal power of the gas burner (2) and a point / fire extinguishing operation section for igniting and extinguishing the gas burner (2),
A special heating power setting operator is provided for setting a special heating power exceeding the maximum heating power that can be set by the heating power control knob,
When the special thermal power setting operator is operated, the thermal power of the gas burner is set to the special thermal power in preference to the thermal power set by the thermal power control knob.
According to the above technical means, when the special thermal power setting operation element is operated, the gas burner burns with the special thermal power exceeding the maximum thermal power that can be set with the thermal power control knob. High heating can be performed.

[Invention of Claim 2 ]
In claim 1 ,
“When the ignition operation or the fire extinguishing operation is performed by the point / fire extinguishing operation unit, the thermal power set by the thermal power setting knob has priority over the special thermal power”, this is special when the gas burner is ignited. Never start burning with firepower.

In the invention which concerns on Claim 1 , as mentioned above, even if it is a special big pot, heating with high thermal efficiency can be performed.

In the invention according to claim 2 , when the gas burner is ignited, the gas burner does not start to burn with the special heating power.

The best mode for carrying out the present invention (hereinafter abbreviated as “embodiment”) will be described below with reference to the accompanying drawings.
[overall structure]
As shown in FIG. 1, a point for a gas burner (2), a point serving as a fire extinguishing operation part, and a fire extinguishing button (11) are arranged below the operation part (10) formed on the left and right of the front of the stove body (1). The thermal power control knob (S) disposed above is configured to be slidable along the horizontally long slit (12), and the flow rate adjustment for gas supply to be described later is performed by the slide. The opening of the valve (24) (see FIGS. 4 and 7) is changed so that the heating power of the gas burner (2) can be adjusted in the range of 500 Kcal / h to 3500 Kcal / h.

  The area along the slit (12), which is the operating area of the thermal power control knob (S), has a thermal power that can maximize the thermal efficiency when heating the pan (9), even if the pan type such as size is different. For this purpose, a display section (6) on which an appropriate thermal power mark (63a) for matching the thermal power control knob (S) is printed. If the heating power of the gas burner (2) is large relative to the pan size, the flame overflows from the pan bottom to the outside, whereas if the pan bottom is formed in a spherical shape, the distance between the pan bottom outer circumference and the flame becomes long. However, simply increasing the thermal power is not desirable from the viewpoint of thermal efficiency, so that the optimal thermal power can be set for the pan type.

Also, a special thermal power setting operator (operated when setting the thermal power to 4000 Kcal / h, which is a special thermal power exceeding the maximum thermal power that can be set by the thermal power control knob (S), is provided in the vicinity of the point / fire extinguishing button (11). 14) is provided, and if the special heating power setting operation element (14) is inserted during the combustion of the gas burner (2), the gas burner (2) is burned with a heating power of 4000 Kcal / h which can efficiently heat the special large pan. It is supposed to be.
The grill (16) provided in the central portion of the stove body (1) can be turned on and off by operating the grill point and fire button (15).

[Configuration of display section (6)]
FIG. 2 is an enlarged view of the display section (6) formed in the slide area of the thermal power control knob (S).
Between the maximum thermal power position (61) located at the left end of FIG. 2 and the minimum thermal power position (62) at the right end, a stainless steel pot (9) with a flat pan bottom (hereinafter referred to as “flat bottom”) is the size surface. The first to fourth size displays (63a) to (63d) classified into four types are provided at predetermined intervals in the horizontal direction, and the first to fourth size displays (63a) to (63d) are respectively It is a display for setting the heating power that can maximize the thermal efficiency when heating a pan-bottom pan (9) made of stainless steel having a diameter of 30 cm, 25 cm, 20 cm, and 15 cm. Specifically, when the thermal power adjustment knob (S) is slid to match the first to fourth size indications (63a) to (63d), the tip of the flame (F) (see FIG. 1) of the gas burner (2) It is set to reach the vicinity of the outer periphery of the pan bottom. And, when the heating control knob (S) is cooked in accordance with the first to fourth size indications (63a) to (63d), the thermal efficiency for the flat-bottomed stainless steel pan (9) of each diameter can be maximized. It is like that.

  In the adjacent portions of the first to fourth size indications (63a) to (63d) displayed above the slit (12), even if these size pans (9) are made of aluminum, the stainless steel Since it is necessary to correct the heating power in the case of manufacturing, a material display (64) for the heating power correction is provided. For example, if the heating control knob (S) is cooked according to the material display (64) adjacent to the first size display (63a), the thermal efficiency when heating the flat-bottomed aluminum pan (9) with a diameter of 30 cm is increased. It can be maximized. In addition, when cooking is performed according to the material display (64) adjacent to the second size display (63b), the thermal efficiency when heating a flat-bottomed aluminum pan (9) with a diameter of 25 cm can be maximized, Hereinafter, when cooked in accordance with the material indications (64) adjacent to the third and fourth size indications (63c) and (63d), a flat-bottomed aluminum pan (20cm or 15cm in diameter) (9 ) Can be maximized when it is heated.

  In the adjacent part of the material display (64), when the pan bottom shape of the pan (9) is round (hereinafter referred to as “round bottom”), the shape display (65 ) (65) are provided separately. For example, if the heating control knob (S) is cooked according to the shape display (65) located next to the material display (64) adjacent to the first size display (63a), it is made of aluminum with a round bottom of 30 cm in diameter. The heat efficiency when the pan (9) is heated can be maximized. The same applies to the second to fourth size displays (63b) to (63d).

  On the other hand, the shape display (65) is also provided in the adjacent portions of the first to fourth size displays (63a) to (63d) shown below the slit (12). Therefore, for example, if the heating control knob (S) is cooked according to the shape display (65) adjacent to the first size display (63a) on the lower side of the slit (12), it is made of stainless steel with a round bottom of 30 cm in diameter. The thermal efficiency when the pan (9) is heated can be maximized. In addition, when cooking is performed according to the shape display (65) adjacent to the second size display (63b) on the lower side of the slit (12), the round bottom stainless steel pan (9) is heated. The thermal efficiency can be maximized. Similarly, when cooking in accordance with the shape indications (65) adjacent to the third and fourth size indications (63c) and (63d), a round bottom stainless steel pan (9) The thermal efficiency when heating is maximized.

[Gas circuit for gas burner (2), etc.]
FIG. 7 is an explanatory diagram of the gas circuit (21) to the gas burner (2) and its control circuit.
In the gas circuit (21), an electromagnetic safety valve (22), a main valve (23), an on-off valve (29), and a flow rate adjustment valve (24) are arranged in this order from the upstream side, The bypass circuit that bypasses the valve (29) and the flow rate adjustment valve (24) has a special heating power setting valve (26) .When the on-off valve (29) is closed and the special heating power setting valve (26) is opened, The gas burner (2) can be supplied with more gas than the maximum gas amount that can be supplied by the flow rate adjusting valve (24) alone with the open / close valve (29) open. Specifically, when the on-off valve (29) is opened and the flow rate adjustment valve (24) is set to the maximum opening, the gas burner (2) can be supplied with an amount of gas that can be burned at 3500 Kcal / h. In a state where the valve (29) is closed and the special heating power setting valve (26) is opened, an amount of gas that can burn the gas burner (2) at 4000 Kcal / h can be supplied.

  In addition, the control device (36) for controlling the electromagnetic safety valve (22), the special heating power setting valve (26), etc. includes a point / fire extinguishing button (11), a special heating power setting operator (14), and a gas burner (2 ) Is connected to a thermocouple (35) for monitoring the combustion state. In this embodiment, every time the point / fire extinguishing button (11) is pressed, the original valve (23) is correspondingly opened and closed by a push push mechanism described later. Each time the special heating power setting operator (14) is pushed, the special heating power setting valve (26) is correspondingly opened and closed by the control device (36). The control device (36) controls the open / close state of the open / close valve (29) for supplying gas to the flow rate adjusting valve (24) to the open / close state opposite to that of the special heat setting valve (26). When the setting valve (26) is opened, the on-off valve (29) is closed so that the gas amount adjustment function by the flow rate adjustment valve (24) does not work.

[Valve unit]
The electromagnetic safety valve (22), the main valve (23) and the flow rate adjusting valve (24) are incorporated in the valve unit (8) shown in FIGS.
At the front end of the casing (81) of the valve unit (8), there is provided a movable element (83) that comes into contact with the back surface of the aforementioned point / fire extinguishing button (11), and the movable element (83) is a spring. At (82), the point / fire extinguishing button (11) is urged. Further, the rod (84) is pushed against the urging force of the spring (85) by the movable element (83), and the rear end of the rod (84) is the valve body of the electromagnetic safety valve (22). The valve element (23a) of the main valve (23) is attached to the intermediate part of the rod (84).

  The mover (83) is moved back and forth between the final position behind in the pushing direction and the initial position before pushing by the push-push mechanism (86), and the return operation from the final position is intermediate. It is designed to be locked in position. Therefore, when the point / fire extinguishing button (11) is pushed, the rod (84) is pushed backward through the mover (83) to move, the main valve (23) is opened and the electromagnetic safety valve (22) Is pressed to open the valve, and at the same time, an ignition device (not shown) is operated to ignite the gas burner (2). When the gas burner (2) is ignited, the electromagnetic safety valve (22) is held open by the electromotive force of the thermocouple (35) facing the flame hole. When the pushing operation of the point / fire extinguishing button (11) is released in this state, the mover (83) is returned to the intermediate position in the pushing direction by the push-push mechanism (86). In this intermediate position, the electromagnetic safety valve (22) is released from being pressed, but the electromagnetic safety valve (22) is held open by the electromotive force of the thermocouple (35) as described above, and the original valve ( 23) is pushed in and opened by the rod (84). Thereby, the gas burner (2) is maintained in a combustion state. When the point / fire extinguishing button (11) is pushed in again, the mover (83) is unlocked at the intermediate position, which causes the mover (83) to return to the initial position and close the main valve (23). As a result, the gas burner (2) is extinguished, and the electromotive force of the thermocouple (35) is lost, so the electromagnetic safety valve (22) is also closed.

  The push-push mechanism (86) includes a substantially heart-shaped cam groove (860) formed in the movable element (83) as shown in FIG. 5 and an engaging element (861) engaged therewith. The heart cam type is adopted. When the movable element (83) is moved from the initial position to the final position by the first pushing operation (ignition operation) of the point / fire extinguishing button (11), the engaging element (861) is moved from the point a to the point b of the cam groove (860). When the pushing force is released at the final position, the engaging element (861) moves from the point b to the point c of the cam groove (860), and the movable element (83) is locked at the intermediate position. In addition, when the point / fire extinguishing button (11) is pushed in for the second time (fire extinguishing operation), the engaging element (861) moves from point c to point d of the cam groove (860). The combination (861) returns to point a, and the mover (83) returns to the initial position. Further, the cam groove (860) is formed in a deformed heart shape in which the longitudinal distance between the points a and d is set shorter than the longitudinal distance between the points a and b. The ignition device for the gas burner (2) is activated when it moves to the position corresponding to the point. Accordingly, during the fire extinguishing operation in which the mover (83) moves along the path corresponding to the range of the point c → d point → a point, the mover (83) does not pass the position corresponding to the point b. The ignition device to) does not work.

  Further, in the present embodiment, when the point / fire extinguishing button (11) is pushed during the ignition operation and the fire extinguishing operation, a limit switch (not shown) is operated to close the special heating power setting valve (26). Output a signal. Therefore, if the point / fire extinguishing button (11) is pushed in (the point / fire extinguishing operation is performed) with the special heat setting valve (26) open, the special heat setting valve (26) is closed by the valve closing signal. Thus, the heating power set by the heating power adjustment knob (S) is restored.

  In addition, the flow rate adjustment valve (24) incorporated in the valve unit (8) is a needle type inserted into the upper end of the vertical path (87) formed in the casing (81) so as to be rotatable and vertically movable. A valve body (240) is provided. A cap (88) (see FIGS. 3 and 4) is attached to the upper end of the vertical path (87), and elongated oblique guide holes (88a) are formed on the left and right side walls of the cap (88). Yes. A pin (88b) protruding from the left and right side walls at the upper end of the flow rate adjusting valve (24) is inserted through the guide hole (88a).

  Further, a thermal power adjusting lever (51) is attached to the top of the cap (88) with a shaft (91), and the pin (88b) is attached to both sides of the base end of the thermal power adjusting lever (51). ) Sandwiches the fork part (51a). As a result, when the thermal power adjustment lever (51) is rotated, the pin (88b) is guided by the guide hole (88a) while moving integrally with the flow rate adjustment valve (24), and moves up and down to the gas burner (2). The gas supply amount is increased or decreased. The operation knob heating power adjustment knob (S) described above that slides along the slit (12) formed on the front surface of the stove body (1) is attached to the tip of the heating power adjustment lever (51). .

  On the other hand, when the point / fire extinguishing button (11) is pushed in to ignite the gas burner (2), the thermal power adjustment lever (51) is moved to the ignition position (in this embodiment, the thermal power adjustment lever (51) is a sliding slit ( The valve unit (8) has a mechanism for forcibly moving it to the strong fire position at the left end of 12). As shown in FIGS. 3 and 6, this mechanism is composed of an interlocking lever (80a) rotatably attached to one side surface of a rising portion (89) of a casing (81) by a support shaft (90). . This interlocking lever (80a) is provided with a power point portion (80c) facing the protruding portion (83b) (see FIG. 6) protruding rearward at the upper portion of the mover (83) and a flow rate adjusting valve (24). An action point portion (80d) facing the pin (88b) penetrating in the direction is formed. According to this, when the point / fire extinguishing button (11) is pushed to burn the gas burner (2), when the mover (83) is pushed backward from the position corresponding to the point d in FIG. The portion (83b) comes into contact with the force point portion (80c) of the interlocking lever (80a), and the interlocking lever (80a) is swung. As a result, the action point (80d) of the interlocking lever (80a) contacts the pin (88b), and the pin (88b) rotates together with the flow rate adjusting valve (24). Then, the pin (88b) is guided and lifted by the guide hole (88a) appearing in FIGS. 3 and 4, and thereby the flow rate adjusting valve (24) is moved to the high fire position as the ignition position.

[Actual use]
Next, the actual use of the gas stove will be described.
First, when the pan (9) is placed on the Gotoku (G) and the point / fire extinguishing button (11) is pushed in, the thermal power control knob (S) is set to the ignition position (this implementation) by the mechanism of the valve device (8) described above. In this embodiment, the heating power control knob (S) is forcibly moved to the strong fire position (the left end of the sliding slit (12)), and the electromagnetic safety valve (22) and the main valve (23) are opened. When the point / fire extinguishing button (11) is pushed in, the special heat setting valve (26) is closed and the on-off valve (29) is opened by the valve closing signal of the limit switch (not shown). Is done. Accordingly, if the special heating power setting valve (26) is in the open state before the point / fire extinguishing button (11) is pushed in, the valve is closed and the on-off valve (29) is opened. (A gas amount corresponding to strong fire in the present embodiment) is supplied to the gas burner (2). In this state, an ignition device (not shown) is activated and the gas burner (2) starts to burn. Then, the electromagnetic safety valve (22) is maintained in the open state by the output of the thermocouple (35) that monitors the flame of the gas burner (2), whereby the combustion of the gas burner (2) continues.
In this state, the thermal power adjustment knob (S) is slid so that the thermal power when the pan (9) placed on the virtues (G) is heated can be set to the highest thermal efficiency.

  Specifically, when heating a flat-bottomed stainless steel pan (9) having a diameter of 30 cm, the heating power adjustment knob (S) is set to the first size display (63a). Then, as described above, the gas burner (2) burns with the heating power that can maximize the thermal efficiency when heating the flat bottom stainless steel pan (9) having a diameter of 30 cm. In addition, when heating an aluminum pan (9) that differs only in material from the pan (9), set the heating control knob (S) to the material display (64) adjacent to the first size display (63a). . Furthermore, when heating the aluminum pan (9) having a round bottom of 30 cm in diameter, the heating power adjustment knob (S) is set to the material display (64) of the adjacent portion of the first size display (63a). In addition, when heating a stainless steel pot (9) with a round bottom of 30 cm in diameter, the heating power is adjusted to the shape display (65) of the adjacent portion of the first size display (63a) provided below the slit (12). Set the knob (S). Similarly, when using a pan (9) with a diameter of 15 cm to 25 cm, the second to fourth size indications (63b) to (63d) depending on the combination of the diameter (pan size) and the material and pan bottom shape. In addition, the thermal power control knob (S) is matched with the material display (64) and the shape display (65) provided in the adjacent portions. As a result, the gas burner (2) is burned with the thermal power that can maximize the thermal efficiency of the pot used, and a gas stove with high thermal efficiency is obtained.

  On the other hand, when the special thermal power setting operator (14) is turned on, the special thermal power setting valve (26) appearing in FIG. 7 is opened and the on-off valve (29) is closed, whereby the flow rate adjusting valve (24 ) Is supplied to the gas burner (2) from the special thermal power setting valve (26), and this allows the gas burner (with a special thermal power exceeding the maximum thermal power that can be set with the thermal power control knob (S)). 2) burns. Thereby, the heating power setting which can heat a specially large-sized pan (9) efficiently can be performed.

In the above embodiment, the thermal power of the gas burner (2) is set by the slide type thermal power control knob (S). However, as shown in FIG. 8, the outer periphery of the rotary thermal power control knob (S) is set. The aforementioned display section (6) may be formed in the area (operation area) .

  The present invention can be applied to various gas stoves such as a table stove, a drop-in stove that is attached to a countertop of a system kitchen in a dropped state, and a gas stove for business use.

The front view of the gas stove which concerns on embodiment of this invention Enlarged view of display (6) Perspective view of valve unit (8) Cross section of valve unit (8) Explanatory drawing of push-push mechanism (86) Perspective view of essential parts of valve unit (8) Schematic of a gas circuit of a gas stove according to an embodiment of the present invention Front view of modified example of thermal power control knob (S) Illustration of conventional example Enlarged view of the vicinity of the thermal power control knob (S) in the conventional example

Explanation of symbols

(2) ・ ・ ・ Gas burner
(6) ・ ・ ・ Display section
(11) ... Point / Fire extinguishing button
(14) ... Special thermal power setting operator
(S) ・ ・ ・ Heat control knob

Claims (2)

In a gas stove equipped with a sliding or rotating thermal power adjustment knob for setting the thermal power of the gas burner (2), and a point / fire extinguishing operation section for igniting and extinguishing the gas burner (2),
A special heating power setting operator for setting a special heating power exceeding the maximum heating power that can be set by the heating power control knob is provided,
A gas stove in which, when the special heating power setting operator is operated, the heating power of the gas burner is set to the special heating power in preference to the heating power set by the heating power control knob . The gas stove according to claim 1, wherein
A gas stove in which when the ignition operation or the fire extinguishing operation is performed by the point / fire extinguishing operation unit, the heating power set by the heating power setting knob is given priority over the special heating power .

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