JP2705619B2 - Gas cooker for cassette gas cylinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove for a cassette gas cylinder in which a small-capacity cassette gas cylinder is removably accommodated and gas is supplied from the cassette gas cylinder to a gas burner.

[0002]

2. Description of the Related Art In such a gas stove for a cassette gas cylinder, if the heat of combustion in the gas burner has an unlimited effect on the gas cylinder, the cassette gas cylinder is small in size and simple, and becomes overheated to cause abnormal combustion or explosion. Cause. Therefore, the gas burner and the cassette gas cylinder accommodated in the gas supply position are set at a predetermined distance,
The basic idea is to protect the cassette gas cylinder from the heat of combustion in the gas burner by appropriately separating the burner accommodating section and the cylinder accommodating section by partition walls.

On the other hand, since the cassette gas cylinder has a small capacity as described above, if the gas is consumed and the liquefied gas continues to be vaporized, the temperature of the liquefied gas decreases due to latent heat of vaporization, and the vaporizing action is slowed down. Become. For this reason, as the use of the gas stove continues, the gas supply amount from the cassette gas cylinder decreases. Further, even in winter or cold regions, it is difficult to obtain sufficient heat of vaporization, and the gas supply amount tends to be insufficient. Such a problem becomes more remarkable as the calorific value increases.

Therefore, conventionally, the heat of combustion of the gas burner is appropriately transmitted to the cassette gas cylinder to compensate for the temperature, thereby coping with the above-mentioned problem.

For example, Japanese Utility Model Laid-Open Publication No. 56-56506 discloses that the base is located in the burner housing section just below the flame hole of the gas burner, and the tip is housed in the cylinder housing section in the cylinder housing section. A heat conductive plate is provided so as to be in contact with the cassette gas cylinder, and an upward guide wall is provided on both sides of the heat conductive plate, and a hot air guide reaching the side of the cassette gas cylinder from the combustion part of the gas burner through the partition wall. The formed one is disclosed.

Accordingly, the heat conduction plate receives the heat of combustion of the gas burner well at the flame hole of the gas burner, and transmits the heat to the cassette gas cylinder, and guides the hot air generated by the combustion heat to the cassette gas cylinder side, and the vicinity of the cassette gas cylinder. , The temperature of the cassette gas cylinder can be compensated.

In Japanese Utility Model Application Laid-Open No. 57-128000, the base is located under the base of the gas burner in the burner accommodating portion, and the tip portion contacts the cassette gas cylinder accommodated in the cylinder accommodating portion in the cylinder accommodating portion. It is disclosed that a heat conductive plate positioned as described above is provided. Thus, the combustion heat transmitted to the pedestal portion of the gas burner is transmitted to the cassette gas cylinder, so that the temperature of the cassette gas cylinder can be compensated.

[0008]

By the way, gas stoves for cassette gas cylinders have been required to have a high calorific calorific value that can cope with various kinds of cooking as demand increases. For example, from about 1200 Kcal / h in the early stage of development, it becomes 1700 Kcal / h, and recently, about 2500 Kcal / h is required.

[0009] To this end, it is necessary to satisfy the balance between the safety of use of the gas stove and the temperature compensation of the cassette gas cylinder in a well-balanced manner.

In the above-mentioned publication, the temperature compensation of the cassette gas cylinder can be sufficiently performed, but there is a fear that the temperature compensation sometimes becomes excessive when the calorific value is high. In addition, the temperature at the time of use of the gas burner is increasing due to the high calorie as described above, and the thermal effect on the table surface on which the gas stove is installed is a problem, but measures against this have been taken. Absent. In addition, when measures are taken, a separate member or structure is required for heat shielding, and the structure becomes complicated.

In the above-mentioned publication, even if the heat of the gas burner can be transmitted to the cassette gas cylinder by a heat conducting plate to perform temperature compensation, the base is provided at the lower end of the thin leg below the gas burner. Since the gas burner is merely located under the small pedestal, the gas burner does not have a structure capable of preventing a thermal influence on the installation surface of the gas stove when the calorie has a high calorific value. Therefore, also in the case of the gas stove having a high calorific value, a separate member or structure is required for heat insulation, and the structure becomes complicated.

An object of the present invention is to solve such a problem. With a simple structure, the temperature of a cassette gas cylinder can be compensated without excess or shortage, and at the same time, the influence of heat on a gas stove installation surface can be sufficiently prevented. It is an object of the present invention to provide a gas stove for a cassette gas cylinder which can be used.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, a gas stove for a cassette gas cylinder according to the present invention has a burner housing section for housing a gas burner in a main body casing and a gas burner for housing a cassette gas cylinder. While providing a cylinder storage part that supplies gas,
A heat conducting plate extending from the burner housing section side to the cylinder housing section side and conducting heat of the gas burner to a cassette gas cylinder housed in the cylinder housing section; and a burner receiver for receiving the burner head of the gas burner in the burner housing section. The base of the heat conductive plate is sandwiched between the burner receiver and the burner head mounted thereon, and the sandwiched portion has a secondary air intake opening communicating with a secondary air intake passage provided in the burner head. Is provided.

In this case, it is preferable that the base of the heat conductive plate and the burner receiver are formed integrally.

It is preferable that each of the burner receiver, the heat conducting plate, and the burner head has an uneven shape in which the overlapped ones fit.

[0016]

In the gas stove of the present invention, the cassette gas cylinder is accommodated in the cylinder accommodating portion of the main casing, and supplies gas to the gas burner accommodated in the burner accommodating portion of the main casing to burn gas. To serve. At this time, the base of the heat conductive plate is sandwiched and fixed between the burner head and the burner receiver in the burner accommodating portion for receiving the burner head. The combustion heat transmitted to the burner head can be heat-conducted reliably. Moreover, since the heat conducting plate is mounted in the sandwiched state by using the mounting structure and the operation by screws to the burner head of the burner head without using a dedicated mounting member or work, the structure and assembly can be performed. It's easy. Furthermore, since the pinching portion at the base of the heat conducting plate communicates with the secondary air intake passage provided in the burner head so that the secondary air is used for combustion of the gas burner, the pinching portion is used. Thus, a secondary air intake opening communicating with the secondary air intake passage can be formed.

If the base of the heat conducting plate and the burner receiver are formed integrally, the number of members and the number of assembling steps are further reduced without impairing the above-mentioned features, and the cost is reduced accordingly.

In a configuration in which each of the burner receiver, the heat conductive plate, and the burner head has an uneven shape in which overlapping parts are fitted, the heat conductive plate is provided between the burner head of the gas burner and the burner receiver. To make direct contact with the lower part of the burner head, they can be positioned without any special members or work, so that the heat conduction from the burner head to the heat conducting plate is not disturbed as set. In the case where the secondary air intake passage has a secondary air intake passage, it is possible to prevent the secondary air intake passage from being narrowed or blocked due to misalignment of each other and adversely affecting the combustion of the gas burner.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A gas stove for a cassette gas cylinder according to the present invention will be specifically described below with reference to several embodiments.

FIGS. 1 to 8 show a first embodiment of the present invention. As shown in FIGS. 1 to 3, the gas stove for a cassette gas cylinder according to the present embodiment supplies gas to the gas burner 3 by accommodating a burner accommodating portion 4 accommodating a gas burner 3 and a cassette gas cylinder 5 inside a main casing 1. The above-described cylinder housing section 6 is provided. These are not particularly partitioned, but may be appropriately partitioned by partition walls. Further, a heat conducting plate 8 is provided which extends from the burner housing section 4 side to the cylinder housing section 6 side and conducts heat of the gas burner 3 to the cassette gas cylinder 5 housed in the cylinder housing section 6.

As shown in FIGS. 2, 4 and 5, the bottom plate 7 of the main casing 1 projects upward from the bottom of the burner housing 4 to receive and mount the burner head 3a of the gas burner 3. With the legs 10d at both ends with screws 51
It is provided separately by screwing. This may be formed integrally with the bottom plate 7, but if it is formed separately, the degree of freedom in design of dimensions and shapes is increased. In addition, a heat-defective conductor such as stainless steel, which can conduct combustion heat transmitted to the gas burner 3 to the bottom plate 7 and suppress heat radiation therebelow, can also be used partially.

The base 8a of the heat conductive plate 8, for example, on the side of the burner housing 4, is fixed between the burner receiver 10 and the burner head 3a mounted thereon. In this embodiment, the burner head 3a is fixed to the burner receiver 1 in this embodiment.
The base portion 8a is sandwiched between the burner receiver 10 and the burner head 3a by screwing the base portion 8a with a screw 11. The fixing may be performed by a rivet or an elastic engagement portion.

The cassette gas cylinder 5 includes the main casing 1.
The gas is supplied to the gas burner 3 housed in the burner housing section 4 of the main casing 1 and is supplied to the cylinder housing section 6 for combustion.

At this time, the base 8a of the heat conductive plate 8 provided as described above is fixed by being sandwiched between the burner head 3a and the burner receiver 10 in the burner accommodating portion 4 for receiving the same. As a result, the combustion heat transmitted to the burner head 3a is directly conducted according to the setting without any direct influence of the combustion heat, without any direct influence of the combustion heat. Therefore, the temperature of the cassette gas cylinder 5 accommodated in the cylinder accommodating section 6 can be compensated without excess or shortage, and stable combustion can be guaranteed.

Further, the downward heat radiation of the combustion heat transmitted to the burner head 3a is surely suppressed by the heat conduction to the cassette gas cylinder 5 by the heat conducting plate 8, and the burner head 3a is held by the burner receiver 10 by the burner receiving portion. Since the heat conduction to the bottom of the burner accommodating part 4 is suppressed by being lifted upward from the bottom of the gas burner 4, even if the gas stove has a high calorific value, the combustion heat transmitted to the gas burner 3 affects the installation surface of the gas stove. Such a situation can be sufficiently prevented.

Moreover, the heat conductive plate 8 can be mounted on the burner receiver 10 of the burner head 3a without any special mounting member or work.
Sharing the mounting structure and work with screws 11 to the
Since the mounting is performed in the sandwiched state, the structure and assembly are not complicated, and do not cause an increase in cost.

The leading end 8b of the heat conducting plate 8 serving as a heat conducting portion to the cassette gas cylinder 5 extends to the bottom of the cylinder accommodating portion 6 as shown in FIGS.
Gas cylinder 5 housed in a gas supply state
Is formed in a curved shape in contact with the lower part of the body, so that heat from the gas burner 3 can be conducted to the cassette gas cylinder 5 in a relatively large area. The amount of heat conduction to the cassette gas cylinder 5 can also be adjusted by this area.

A secondary air intake passage 14 is formed in the holding portion 12 of the heat conducting plate 8 between the burner head 3a and the burner receiver 10 and communicates with the secondary air intake 13 of the gas burner 3 from inside the burner accommodating portion 4. It is.

Thus, the heat conductive plate 8 is connected to the gas burner 3
The secondary air intake from the lower side of the burner head 3a is carried out by using a portion which is sandwiched between the burner head 3a and the burner receiver 10 to directly contact the lower portion of the burner head 3a. Since it is possible to use the gas burner 14 through the gas turbine 14, it is possible to apply the gas burner 3 to the conventional gas burner 3 as in this embodiment, which takes in the secondary air from below.

The gas burner 3 of this embodiment has an annular burner head 3a, and has a secondary air intake 13 opened at the center. The gas burner 3 has a burner head 3a and a mixing tube 3b extending to one side thereof formed by caulking upper and lower members 3c and 3d formed by pressing a metal plate. 3e and a flame port member 3f which is a cast product forming an upper end opening of the secondary air inlet 13.

The flame hole member 3f also has an upwardly directed flame hole 3g. However, there is no limitation on how to provide the flame holes. A bridge 13a positioned on the diameter line of the secondary air intake 13 of the flame hole member 3f is integrally provided. A central portion of the bridge 13a is fixed to the screw fixing portion 10a of the burner receiver 10 by the screw 11. Screwed on. Even if a plurality of portions are formed in the bridge portion in place of the bridge portion 13a to form an attachment portion integrally connected to the flame hole member, the attachment portion can be similarly attached. A protrusion 52 is provided on the back surface of the bridge 13a, and the protrusion 52 is fitted into a positioning hole 10f provided beside the screw hole 10e at the center of the screwing portion 10a, thereby preventing the flame hole member 3f from rotating and thereby securing one screw. 11 prevents the screws from being loosened.

The secondary air intake passage 14 has an opening 14 a formed in the base 8 a, which is the pinching portion of the heat conductive plate 8, facing the secondary air intake 13 of the gas burner 3, and a gas burner receiver 10. 3 is formed by a relief portion 14b which is recessed on both sides of the screw portion 10a and is released so as not to block both sides of the opening 14a, while leaving the screw portion 10a at a width and length opposite to the bridge 13a. I have. However, the screwing portion 10a is also provided on the side of the burner receiver 10.
Can be provided so as to communicate with the opening 14a.

In this embodiment, in particular, the burner receiver 10, the base 8a of the heat conducting plate 8, and the burner head 3a each have an uneven shape in which overlapping parts are fitted. Specifically, the opening 14 is formed in the base 8 a of the heat conductive plate 8.
An upward convex portion 8c slightly larger in diameter than a is formed by press working so that a concave portion 8d is formed on the back surface. The protrusion 8c is provided on the lower surface of the burner head 3a of the gas burner 3 as shown in FIG.
The recess 8d is fitted into the recess 3h larger than the semicircle formed as shown in FIG.
Oa fits with the convex portion 10b formed by
They overlap each other.

Thus, the heat conductive plate 8 is connected to the gas burner 3
Between the burner head 3a and the burner receiver 10 so as to directly contact the lower portion of the burner head 3a, it is possible to position each other without any special member or work, and to generate heat from the burner head 3a. The heat conduction to the conductive plate 8 as set can be prevented from being disordered, and when the secondary air intake passage 14 is provided, the secondary air intake passage 14 is narrowed or blocked due to positional displacement between the gas burners. 3 can be prevented from being adversely affected.

However, the fitting structure is not limited to this embodiment, and can be designed in various ways.

The half of the heat conductive plate 8 on the side of the cylinder housing 6 is along the bottom plate 7 of the main casing 1, while the half of the heat conductive plate 8 on the side of the burner housing 4 rises obliquely to the upper surface of the burner receiver 10. 7, the effect of heat on the installation surface of the gas stove from the gas burner 3 can be further easily prevented. However, it is not limited to this. Heat conduction plate 8
At the boundary between the portion along the bottom plate 7 and the portion raised from the bottom plate 7, a bead portion 8g is formed so as to cross the bottom portion, and this is fitted to a bead portion 7a formed on the bottom plate 7 and positioned. The screw 15 is used for screwing. Thereby, instability and displacement due to the floating of the heat conductive plate 8 can be prevented. Mounting claws 8f are formed on both left and right sides of the front end 8b of the heat conducting plate 8 as shown in FIGS. 1, 5 and 6, and the front end is hooked into an existing ventilation hole 16 provided in the bottom plate 7 so that the front end is formed. It can be locked to the bottom plate 7, and no special mounting structure is required here.

FIGS. 9 and 10 show a heat conducting plate 8 according to a second embodiment of the present invention. This heat conductive plate 8 is a base 8
The point a is different from the first one in that it is shaped to rise from the bottom plate of the main body casing. With such a shape, the stability of the base 8a is improved.

FIG. 11 shows a heat conducting plate 8 according to a third embodiment of the present invention. The heat conductive plate 8 has a burner receiver 10 integrally formed with the base 8a by utilizing the shape of the second embodiment in which the base 8a rises from the bottom plate of the main casing. According to this, the number of parts and the number of assembling steps can be reduced.

Returning to the first embodiment shown in FIGS. 1 to 8, the mixing pipe 3 b of the gas burner 3 extends close to the cylinder housing 6. A governor 21 for connecting the cassette gas cylinder 5 accommodated in the cylinder accommodating section 6 is installed in the cylinder accommodating section 6, and a gas supply port 22 a connected to the governor 21 via a gas cock 22 is provided in the burner accommodating section 4. The gas is supplied to the mixing tube 3b facing the inside, and the gas cock 22 is opened and closed by the operation knob 22b to supply the gas or stop the gas supply.
The ignition device 30 operates in conjunction with the opening operation at this time, and sparks fly from the ignition plug 30a to the flame hole 3e to enable automatic ignition.

Prior to use, the cassette gas cylinder 5 is set in a state where it is connected to the connection port 21a of the governor 21, and the cylinder gas is stored in the cylinder accommodating portion 6 so that the set can be released and replaced. A setting mechanism 23 is provided. The cylinder setting mechanism 23 includes a slide member 24 held at the bottom of the cylinder housing portion 6 so as to be able to slide back and forth, a set lever 25 for moving the slide member 24 back and forth, and a cam
And a spring mechanism 26. This cam / spring mechanism 26
The slide member 24 is moved back and forth in conjunction with the operation of the set lever 25, and the cassette gas cylinder 5 is pressed forward from the rear end to press-fit the connection port 21a for connection, and the cylinder connection position is retracted rearward to reduce the pressure. The release cassette gas cylinder 5 is moved from the connection port 21a to a disconnection position where it is automatically detached by returning its own nozzle or a valve built in the connection port 21a, and is stabilized at these positions. It has become. A pressing piece 2 for pressing the cassette gas cylinder 5 from the rear end is provided on the slide member 24.
4a.

A juice tray 28 is removably mounted on the opening of the burner housing 4 from above.
Gotoku 3 fixed to the upper surface of 8 with a screw from the lower surface
In FIG. 1, a cooking container or the like is received and can be used for heating cooking on a gas stove. The lid 3 whose upper side is pivotally supported by the shaft 33 at the upper edge of the opening of the cylinder housing 6
The cover 34 is pivoted about the shaft 33 to open and close the cylinder accommodating portion 6 so that the cassette gas cylinder 5 can be accommodated or replaced. However, these specific configurations can be variously changed, and various known configurations can be adopted.

On the other hand, the cassette gas cylinder 5 is provided with a positioning flange 5b around the nozzle 5a as shown in FIGS.
Is formed. The notch 5c coincides with the biasing direction in which the gas outlet in the cassette gas cylinder 5 is biased and opened near the peripheral wall of the body of the cassette gas cylinder 5,
Set the cassette gas cylinder 5 so that the notch 5c faces upward.
Is set, the gas outlet is located at the upper part in the cassette gas cylinder 5, and a proper use state in which only the vaporized gas can be taken out is obtained.

To satisfy this, as shown in FIGS. 7 and 8, a safety lever 41 for preventing the cassette gas cylinder 5 from being set so that the notch 5c does not face upward is provided. The safety lever 41 is pivotally supported by a shaft 42 on the same mounting surface as the set lever 25,
It is located just above 5.

The passive piece 41a at one end of the safety lever 41 is located above the connection port 21a, and the notch 5c of the cassette gas cylinder 5 connected to the connection port 21a and the set for connecting the cassette gas cylinder 5 to the connection port 21a. The locking piece 41b at the other end is positioned directly above a notch 25a formed at a part of the upper edge of the set lever 25.
And a locking piece 41b bent so as to cross.

The passive piece 41a is held at the lower position by a spring 43 which is acted between the passive piece 41a and the projection 21b formed integrally with the governor 21, and the safety lever 41 is engaged with the locking piece 41b shown by a solid line in FIG. Is always out of the notch 25a.

In this state, when the cassette gas cylinder 5 is set in an appropriate direction, the notch 5c of the cassette gas cylinder 5 fits with the passive piece 41a and does not interfere with each other, and the set lever 25 is engaged from the notch 25a. Stop piece 41
Since b can be freely rotated by being removed, the cassette gas cylinder 5 can be set smoothly by operating the set lever 25.

If the direction of the cassette gas cylinder 5 is not proper during the setting operation, the positioning flange 5b of the cassette gas cylinder 5 abuts against and interferes with the passive piece 41a, and pushes up the passive piece 41a against the spring 43.

As a result, the safety lever 41 is rotated, and the locking piece 41b falls into the notch 25a of the set lever 25 as shown by the imaginary line in FIG. 7 to prevent the set lever 25 from further rotating. Therefore, it is possible to reliably prevent the cassette gas cylinder 5 having an inappropriate orientation from being mounted.

[0049]

According to the main feature of the gas stove for a cassette gas cylinder of the present invention, the cassette gas cylinder is housed in the cylinder housing section of the main body casing and supplies gas to the gas burner housed in the burner housing section of the main body casing. Serve for combustion. At this time, the base of the heat conductive plate is sandwiched and fixed between the burner head and the burner receiver in the burner accommodating portion for receiving the burner head. The combustion heat transmitted to the burner head can be heat-conducted reliably. Moreover, since the heat conducting plate is mounted in the sandwiched state by using the mounting structure and the operation by screws to the burner head of the burner head without using a dedicated mounting member or work, the structure and assembly can be performed. It's easy. Furthermore, since the pinching portion at the base of the heat conducting plate communicates with the secondary air intake passage provided in the burner head so that the secondary air is used for combustion of the gas burner, the pinching portion is used. Thus, a secondary air intake opening communicating with the secondary air intake passage can be formed.

According to the structure in which the base of the heat conducting plate and the burner receiver are integrally formed, the number of members and the number of assembling steps are further reduced without deteriorating the above-mentioned features, and the cost is correspondingly reduced. Reduce.

According to the configuration in which each of the burner receiver, the heat conducting plate, and the burner head has an uneven shape in which the overlapping ones are fitted, the heat conducting plate is a burner head of a gas burner and its burner. Since it is sandwiched between the receiver and the direct contact with the lower part of the burner head, it can position each other without special members and work,
The heat conduction from the burner head to the heat conduction plate can be prevented from being disordered, and if the burner head has a secondary air intake passage, it can be narrowed or blocked due to misalignment with each other. As a result, it is possible to prevent the combustion of the gas burner from being adversely affected.

[Brief description of the drawings]

FIG. 1 is a plan view showing a gas stove for a cassette gas cylinder as a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the gas stove of FIG. 1 in a direction in which a burner accommodating section and a cylinder accommodating section are arranged.

FIG. 3 is a cross-sectional view of the gas stove in FIG.

FIG. 4 is an enlarged view of a gas burner mounting portion in FIG. 2;

FIG. 5 is an exploded perspective view of the part of FIG. 4;

FIG. 6 is a sectional view showing a portion of the heat conductive plate of FIG.

FIG. 7 is a side view showing a cylinder setting mechanism portion of the cylinder accommodating portion.

FIG. 8 is a plan view of the part of FIG. 7;

FIG. 9 is a side view showing a heat conductive plate as a second embodiment of the present invention.

FIG. 10 is a perspective view of the heat conduction plate of FIG. 9;

FIG. 11 is a perspective view showing a heat conductive plate as a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body casing 3 Gas burner 3h Concave part 4 Burner accommodating part 5 Cassette gas cylinder 6 Cylinder accommodating part 7 Bottom plate 8 Heat conductive plate 8c Convex part 8d Concave part 10 Burner receiver 10b Convex part 11 Screw 12 Clamping part 13 Secondary air inlet 14 Secondary Air intake passage

Claims (3)

(57) [Claims] In a main body casing, a burner accommodating section accommodating a gas burner and a cylinder accommodating section accommodating a cassette gas cylinder and supplying gas to the gas burner are provided. And a heat conducting plate extending to the cassette gas cylinder accommodated in the cylinder accommodating portion, and a burner receiver for receiving the burner head of the gas burner is provided in the burner accommodating portion. The base of the heat conductive plate is sandwiched between the burner head and the burner head.
To the secondary air intake passage in the head
A gas stove for a cassette gas cylinder having a secondary air intake . 2. The heat conductive plate base and the burner receiver are integrally formed.
The gas stove for a cassette gas cylinder according to claim 1, wherein the gas stove is formed. 3. A burner receiving, heat conductive plate, and each of the burner head, cassette gas cylinder according to any one of those each other is fits fits claim has an irregular shape, two overlapping gas stove .