JP4839124B2 - Gas cylinder for portable stove and portable stove - Google Patents

Description

  The present invention relates to a gas cylinder for a portable stove and a portable stove that can be used, for example, when providing pan cooking for one or a small number of people, and more specifically, a portable stove that can improve safety. Gas cylinder and portable stove.

As a portable stove, the following patent documents 1 and 2 are disclosed.
Each of these portable stoves includes a burner body having a burner at the center and a thick, substantially disk-like shape with a virtues on the upper surface, and a substantially cylindrical support base that supports the stove body. A connection port for connecting a gas cylinder is provided on the lower surface of the stove body, and when connected to the connection port, the gas cylinder is placed inside the support base. When the gas cylinder is connected to the connection port, the nozzle portion provided at the upper end of the gas cylinder is pushed down, and the gas sealed in the gas cylinder is ejected and introduced into the switch provided in the stove body. And gas is injected toward a burner by rotation operation of the operation knob with which the switch was equipped, and it is comprised so that it may burn in a burner.

  Further, the gas cylinder is configured so that the gas can be filled when the gas is reduced by use. The gas cylinder is formed by using a container made of a transparent synthetic resin.

  Since the gas cylinder is made of a transparent container and the inside can be seen through, there is an advantage that the remaining amount of gas can be clearly recognized visually and is convenient.

  In such a portable stove, the gas cylinder and the connection port are connected by screwing a male screw formed at the upper end of the gas cylinder. That is, the gas cylinder cannot be removed from the connection port unless it is manually rotated.

  For this reason, even if the gas cylinder becomes unexpectedly high in temperature due to use, and the pressure in the gas cylinder is increased, the gas continues to be discharged unless removed manually.

JP 2004-44816 A JP 2004-245400 A

  Thus, the main object of the present invention is to improve safety by stopping gas ejection when the pressure in the gas cylinder increases.

  Means for this is a gas cylinder for a portable stove that is connectable to a connection port provided on the lower surface of the portable stove, and is configured so that the gas sealed in the main body member is discharged when connected. A connecting member for connecting to the connection port is attached to the upper end of the gas stove, and a gas cylinder for a portable stove is provided between the connecting member and the main body member. It is. Bimetal may be used for all or part of the deformable member.

  When the portable gas stove gas cylinder is exposed to a high temperature for some reason, the deformation member provided between the connection member and the main body member is deformed by heat and connected to the connection port. The main body member is separated from the connected member. The separated main body member stops gas ejection when the connection to the connection port is released. For this reason, occurrence of danger can be prevented.

  Another means includes a stove body and a support base that supports the stove body, and a connection port is provided on a lower surface of the stove body, and the portable gas stove gas cylinder is detachably connected to the connection port. The portable stove, wherein the support base suspends the portable stove gas cylinder at a height that stops the gas ejection from the portable stove gas cylinder when the portable stove gas cylinder connected to the connection port is dropped. Mobile stove.

  As described above, when the portable gas stove gas cylinder is exposed to a high temperature, the main body member is separated from the connection member connected to the connection port by deformation of the deformation member. At this time, the supporting base that supports the stove body is suspended because the portable stove gas cylinder is suspended at a height that stops gas ejection from the portable stove gas cylinder when the portable stove gas cylinder falls off. The ejection of gas from the falling main body member stops. As a result, occurrence of danger can be prevented.

  As described above, according to the present invention, the gas cylinder for a portable stove can automatically separate and separate the main body member enclosing the gas from the portable stove when exposed to a high temperature. As a result, it is possible to stop the gas ejection and prevent the occurrence of unexpected danger.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing a configuration of a portable stove 11 (hereinafter referred to as “a stove”). The stove 11 includes a stove body 21 and a support base 31 that supports the stove body 21 at a predetermined height. Have. A portable gas stove gas cylinder 41 (hereinafter referred to as “cylinder”) is detachably connected to a space surrounded by the support base 31 on the lower surface of the stove body 21.

  The cylinder 41 is attached to the connection port 22 having a substantially cylindrical shape provided on the lower surface of the stove body 21. As shown in FIG. 2, the cylinder 41 is connected to the body member 51 that encloses the gas 42 and the stove body 21. The connection member 61 is fitted to the upper end of the main body member 51 and the lid member 71 is placed over the connection member when not in use.

  The main body member 51 includes a container body 52 made of a transparent synthetic resin, a valve device 53 provided in an opening at the upper end of the container body 52, and a cap member 54 that closes the opening of the container body 52 in an airtight state. Have The cap member 54 is made of metal and is inseparably integrated with the container body 52 by fixing by caulking.

  The container body 52 is formed such that the lower portion is larger in the horizontal direction than the upper portion, and can be stably grounded even when dropped from above, for example. A metal exterior member 55 is attached to the outer peripheral surface of the container body 52. A plurality of see-through windows 56 are formed in the exterior member 55 so that the remaining amount of the gas 42 contained therein can be seen at a glance. The see-through window 56 is formed in a vertically long oval shape as shown in the figure, and as shown in FIG. 2, for example, an upper limit is displayed on the edge of the see-through window 56 so as to indicate the maximum value of the gas 42 to be sealed. Do 57.

  The valve device 53 has a vertically movable nozzle portion 53 a that is biased upward so that the gas 42 is ejected when connected to the connection port 22 of the stove body 21. That is, when the cylinder 41 is connected to the connection port 22, the nozzle portion 53 a is pushed down and the gas 42 is ejected. On the other hand, when it is removed from the connection port 22, the nozzle portion 53 a is moved upward by the urging force and the ejection of the gas 42 is stopped. The valve device 53 is also configured to be filled with the gas 42.

  A known liquefied gas is used as the gas 42. In the figure, 58 is a suction core and 59 is a packing.

  The connecting member 61 is fitted to the upper end portion of the main body member 51. That is, it has a cylindrical neck portion 62 having a hole portion through which the nozzle portion 53a of the valve device 53 is provided on the upper end surface, and a shoulder portion 63 extending from the lower end of the neck portion 62 so as to spread in the outer peripheral direction. On the outer periphery of the neck portion 62, a male screw 62a for being screwed into the connection port 22 is formed. The shoulder 63 is formed in an inverted L-shaped cross section, and has a horizontal horizontal surface 63a and a vertical surface 63b that descends downward from the tip of the horizontal surface 63a. The vertical surface 63b is fitted from above to a stepped portion 52a formed on the upper portion of the container body 52, and is coupled so as not to be relatively rotatable in the circumferential direction.

  A cover member 64 is attached to the shoulder portion 63. The cover member 64 is made of metal and has a ring shape having an L-shaped cross section that covers the horizontal surface 63a and the vertical surface 63b. By having the cover member 64, the shoulder 63 of the connection member 61 is protected from impact, heat, dirt, and the like. Also, as shown in FIG. 3, information 64a relating to the cylinder 41, preferably information relating to the safety of the cylinder 41 is displayed on the upper surface. The display can be performed by an appropriate means. However, if it is performed by, for example, engraving, it does not disappear easily, and even if the shoulder 63 is made of synthetic resin, it does not give a cheap impression, so the viewer's attention can be drawn. . As the safety information 64a, since the cylinder 41 can repeatedly use and fill the gas 42, for example, information 64a such as “expiration date” as shown in the figure can be cited. The expiration date is determined from a technical point of view in consideration of the possibility of deterioration of each member due to repeated use.

  When such a connection member 61 is fitted to the main body member 51, the deformation member 81 is interposed between the opposing surfaces. The deformable member 81 is deformed by receiving a heat and increasing its temperature, and is entirely formed of bimetal. The shape is a ring shape having an inverted L-shaped cross section that overlaps with the inner peripheral surface of the neck portion 62 of the connection member 61. When the temperature rises to a predetermined temperature or more upon receiving heat, the lower portion is shown in phantom lines in FIG. The main body member 51 is unfolded in the outer circumferential direction, and the main body member 51 is released. The deformation member 81 may be provided in the connection member 61, provided in the main body member 51, or may be independent of either.

  On the other hand, as shown in FIG. 1, the stove main body 21 has the connection port 22 for connecting the cylinder 41 so as to protrude downward, and is ejected from the cylinder 41 at a position above the connection port 22 inside. A switch 24 is provided for opening and closing the gas 42 toward the burner 23 built in the center. The switch 24 opens and closes continuously from fully closed to fully open, and has a rotatable operation knob 25 for performing this opening and closing.

  In order to regulate the angle by controlling the rotational operation of the operation knob 25, a regulation dial portion 26 having an outer peripheral surface formed with irregularities is provided inside the operation knob 25, while the operation knob 25 is rotated. A regulating member 27 that is L-shaped in a side view and can be elastically displaced is provided on the main body side that can be supported. The distal end portion of the restricting member 27 is in sliding contact with the unevenness of the restricting dial portion 26 so that the rotation angle of the operation knob 25 can be finely adjusted and the set rotation angle can be maintained.

  A heat conduction plate 28 made of a metal material having good heat conductivity is attached to the lower surface of the stove body 21 from the lower position of the burner 23 built in the center. The heat conduction plate 28 has an attachment portion 28a attached to the lower surface of the stove main body 21, and a hanging piece 28b is formed at the end of the attachment portion 28a. The hanging piece 28b is formed at the lower end of the hanging piece 28b. A contact portion 28c having an arc shape in plan view is formed so as to hold the cylinder 41. Due to the presence of the heat conductive plate 28, it is possible to eliminate the vaporization failure caused by the temperature decreasing with the vaporization of the liquid gas 42, and to maintain a desired thermal power by keeping the gas pressure constant.

  The support base 31 that supports the stove main body 21 has a substantially cylindrical shape having a receiving portion 32 that receives the lower surface of the stove main body 21 in the inner peripheral portion. The height of the support base 31 is shown in FIG. As described above, when the cylinder 41 is connected to the connection port 22, the cylinder 41 is suspended in the air, that is, a space is created between the lower surface of the cylinder 41 connected to the connection port 22 and the grounding surface 91 where the support 31 is grounded. It is set to height. And when the cylinder 41 connected to the connection port 22 falls out of the connection port 22, the nozzle part 53a of the valve device 53 returns to the original projecting position according to the urging force and stops the ejection of the gas 42. The required height.

  According to the portable stove 11 configured as described above, the gas 42 can be combusted by attaching the cylinder 41 to the connection port 22 of the stove main body 21 and twisting the operation knob 25 to ignite. At this time, since the operation knob 25 is provided with the restriction dial portion 26 whose rotation is restricted by the restriction member 27, the heating power can be finely adjusted. In particular, when the thermal power is set to be small, desired thermal power can be obtained and combustion can be performed while maintaining the thermal power.

  That is, even if the rotation angle of the operation knob 25 is kept constant to make it a thin flame, it can be used safely, and the cylinder 41 can be warmed by the heat conduction plate 28 to maintain a constant pressure and perform combustion. be able to.

  If the temperature of the cylinder 41 rises unexpectedly under various usage conditions, the deformable member 81 provided between the main body member 51 and the connecting member 61 of the cylinder 41 is shown in FIG. As indicated by the phantom line, the lower part is deformed so as to warp to the outer peripheral side. For this reason, the main body member 51 is separated from the connection member 61 and falls due to its own weight. Since the exterior member 55 is attached to the main body member 51, the weight necessary for dropping can be ensured even when the gas 42 is reduced. As a result, the nozzle portion 53a of the valve device 53 provided in the main body member 51 of the cylinder 41 moves up, and the ejection of the gas 42 stops. Since the dropped main body member 51 is sealed with the cap member 54, the gas 42 does not leak, and because of the form of the container body 52, it is stably grounded without falling down when dropped.

  Thus, the above-described portable stove 11 is easy to operate with a thermal power, and can obtain a constant thermal power continuously. In addition, an unexpected situation can be avoided, and the portable stove 11 is extremely safe. It is.

  Further, the cylinder 41 is provided with a cover member 64 to protect a part of the connecting member 61 of the cylinder 41, and the cover member 64 is provided with information 64a necessary for safety regarding the cylinder 41. Can alert the user.

  Furthermore, although the cylinder 41 is configured using a container body 52 made of a transparent synthetic resin, the container body 52 is protected by an exterior member 55 and is highly safe. Since it has the see-through window 56, the remaining amount of the gas 42 can be visually recognized at a glance. As a result, the gas 42 can be replenished as necessary, and an inappropriate use state in which the gas is filled more than necessary can be prevented.

  As described above, safety can be obtained by securing safety by the structure of the cylinder 41 and the stove 11, and also by calling attention to the user or prompting proper use.

In the correspondence between the configuration of the present invention and the configuration of the one aspect described above,
The deformation means of the present invention corresponds to the deformation member 81 of the above-described form,
The present invention is not limited to the configuration of the above-described one form.

For example, the deformation means may be provided on either the main body member or the connection member.
The information displayed on the cover member may be other information such as the year of manufacture or the usable time according to the procedure.
Further, the portable stove may be one in which a support base is provided integrally with the stove body.

Sectional drawing of a portable stove. The half sectional view of the gas cylinder for portable cooktops. The top view of the state which removed the cover member of the gas cylinder for portable stoves. Sectional drawing of the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Portable stove 21 ... Stove body 22 ... Connection port 25 ... Operation knob 26 ... Restriction dial part 27 ... Restriction member 28 ... Heat conduction plate 31 ... Support stand 41 ... Gas cylinder for portable stove 42 ... Gas 51 ... Main body member 52 ... Container Body 55 ... Exterior member 56 ... Transparent window 61 ... Connection member 62 ... Neck part 63 ... Shoulder part 64 ... Cover member 64a ... Information 81 ... Deformation member

Claims (7)

A gas cylinder for a portable stove that can be connected to a connection port provided on the lower surface of the portable stove and is configured so that the gas enclosed in the main body member comes out when connected,
A connection member connected to the connection port is attached to the upper end of the main body member,
A portable gas stove gas cylinder provided with deformation means between the connecting member and the main body member, which is deformed by heating to separate the main body member. The connection member has a shape having a neck portion connected to the connection port and a shoulder portion extended from a lower end portion of the neck portion,
The portable gas stove gas cylinder according to claim 1, wherein a metal cover member is attached to the shoulder portion. The portable gas stove gas cylinder according to claim 2, wherein information on the gas cylinder is displayed on a surface of the cover member. The said main body member has a container body which consists of a transparent synthetic resin, and the metal exterior member which has a see-through window in part was attached to the outer peripheral surface of this container body. The gas cylinder for portable cooktops as described in any one of these. It has a stove body and a support stand for supporting the stove body, and a connection port is provided on the lower surface of the stove body, and the connection port is provided with any one of claims 1 to 4. A portable gas stove to which a gas cylinder for a portable gas stove is detachably connected,
A portable stove in which the support base suspends the portable stove gas cylinder at a height at which the ejection of gas from the portable stove gas cylinder is stopped when the portable stove gas cylinder connected to the connection port is dropped. 6. The portable stove according to claim 5, wherein a heat conduction plate is vertically provided on a lower surface of the stove body so as to be in contact with a side surface of the gas cylinder for the portable stove to transmit heat from the stove body to the gas cylinder. The stove body is provided with a rotatable operation knob that adjusts the heating power, and an elastically displaceable restricting member that is in sliding contact with the operation knob and restricts the rotation angle of the operation knob. The portable stove described.

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