JPH0512588Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a cylinder joint for a portable gas refrigerator that is suitably used outdoors such as picnicking, hiking, and driving.

<<Background of the invention>> As a portable gas refrigerator, there is one shown in FIG. 6, for example.

This is from the gas cylinder 61 to the fuel supply pipe 62.
The fuel gas 63 supplied through the burner 64 is injected and combusted, and the combustion heat heats the refrigerant solution 66 in the refrigerant gas generator 65 to generate refrigerant vapor 67, and this refrigerant vapor 67 is sent to the condenser. 68
The liquid refrigerant 69 is evaporated in the evaporator 70, and the internal space 71 is cooled by the endothermic action of this evaporation, thereby allowing food, etc. in the internal space 71 to be refrigerated. This is what we aim to do.

A portable gas refrigerator like this has 6 gas cylinders.
1 and the burner 64 are arranged close to each other, if there is a defect in the connection between the fuel injection nozzle of the gas cylinder 61 and the fuel supply pipe 62, the gas cylinder 6
The burner 64 is exposed to the fuel gas 63 that accidentally leaked from the
There is a risk of the combustion flame igniting, and the gas cylinder
1 and the fuel supply pipe 62 must be securely connected.

<<Prior Art>> Conventionally, there is a technique disclosed in Japanese Utility Model Application Publication No. 108055/1983 as a technique for connecting a fuel injection nozzle of a gas cylinder and a fuel supply pipe.

As shown in FIG. 7, the push-up tool 73 is raised by operating the lever 72 to remove the gas cylinder 6.
1 is inserted into the joint 74. The fuel injection nozzle 75 of the gas cylinder 61 can be connected to the joint 75 with one touch.

<<Problem to be solved by the invention>> However, in the above conventional technology, the gas cylinder 61
The tip of the gas cylinder 61 is inserted into the joint 74 and is only pressed and fixed by the pushing up force of the push-up tool 73. Therefore, the tip of the gas cylinder 61 may shift from the joint 74 due to vibration or impact during carrying, and the fuel injection nozzle 75 Fuel gas 63 accidentally leaks from the burner 6.
There is a risk that the combustion flame in step 4 will catch fire.

The present invention was developed in view of the above-mentioned conventional problems, and is a portable gas tank that makes the connection between the fuel supply pipe and the fuel injection nozzle of the gas cylinder more robust and prevents the risk of accidental gas leakage from the connection point. The purpose is to provide cylinder joints for refrigerators.

<Means for Solving the Problems> The present invention provides a fuel supply pipe 1 having a burner 12 at its tip, as shown in FIGS. 1 to 5, for example.
The cylinder joint 9 of the portable gas refrigerator 1 connects the fuel injection nozzle 33 of the gas cylinder 8 to the base end 29 of the gas cylinder 1, and the base end opening 28 to which the base end 29 of the fuel supply pipe 11 is screwed is connected to the gas cylinder. A joint pipe 25 is provided with a tip opening 31 into which a fuel injection nozzle 33 is screwed, and an operating lever 36 is attached to this joint pipe 25 via a one-way clutch mechanism 35 that can switch between forward and reverse connections. Operation lever 36
is guided out of the refrigerator from an operation lever insertion hole 38 provided in the storage wall 27, and forward rotation 44 of the joint pipe 25 is caused by the operation lever 36 via the one-way clutch mechanism 35.
When activated, the joint pipe 25 is connected to the base end 2 of the fuel supply pipe 11.
The distal end opening 31 of the joint pipe 25 is configured to be screwed onto the fuel injection nozzle 33 of the gas cylinder 8 while being screwed in the retraction direction 48 along the
One-way clutch mechanism 3 using operating lever 36
The distal end opening 31 of the joint pipe 25 is connected to the gas cylinder 8 while the joint pipe 25 is screwed in the spiral direction 49 along the proximal end 29 of the fuel supply pipe 11 by the reverse rotation 46 of the joint pipe 25 via 5. It is characterized by being configured to be screwed back from the fuel injection nozzle 33.

<<Operation>> When the one-way clutch mechanism 35 is connected in the forward rotation state and the operating lever 36 is swung, the joint pipe 2
5 rotates forward 44 while connected to the one-way clutch mechanism 35, and this joint pipe 25 connects to the fuel supply pipe 11.
The tip opening 31 of the joint pipe 25 is screwed into the fuel injection nozzle 33 of the gas cylinder 8 along the base end 29 of the joint pipe 25, and the base of the fuel supply pipe 11 is screwed along the base end 29 of the joint pipe 25. The end portion 29 and the fuel injection nozzle 33 of the gas cylinder 8 are connected.

When the one-way clutch mechanism 35 is connected in the reverse rotation state and the operating lever 36 is swung, the joint pipe 2
5 rotates in the reverse direction 46 when connected to the one-way clutch mechanism 35, and this joint pipe 25 connects to the fuel supply pipe 11.
The tip opening 31 of the joint pipe 25 screws back from the fuel injection nozzle 33 of the gas cylinder 8 along the base end 29 of the fuel supply pipe 11 and the gas cylinder 8. Fuel injection nozzle 33
The connection will be disconnected.

"Example" Embodiments of the present invention will be described based on the drawings.

Fig. 1 is an overall perspective view of a portable gas refrigerator according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the mechanism of the refrigerator, Fig. 3 is a front view of the refrigerator with the cylinder joint in an unconnected state, and Fig. 4 The figure is a front view of the connection state of the joint,
FIG. 5 is a sectional view taken along the line A--A in FIG. 4.

First, the configuration of the portable gas refrigerator 1 will be explained.

As shown in FIG. 1, a portable gas refrigerator 1 includes an interior space 2, an equipment room 3, and a cylinder storage room 4.

A lid 6 is attached to the upper opening 5 of the internal space 2.

Further, an absorption refrigerating device 7 is arranged in the equipment room 3, and a cylinder joint 9 for connecting a gas cylinder 8 is arranged in the cylinder storage chamber 4. This cylinder joint 9 is attached to a fuel supply pipe 11 that serves as a supply route for the fuel gas 10, and this fuel supply pipe 11
A burner 12 for burning the fuel gas 10 supplied from the fuel supply pipe 11 is attached to the tip of the fuel supply pipe 11 .

In addition, as shown in FIG. 2, the absorption refrigerator device 7 includes a refrigerant vapor generator 15 that heats a refrigerant solution 13 with the combustion heat of the fuel gas 10 combusted in the combustion nozzle 12 to generate high-temperature refrigerant vapor 14. and a condenser 17 that radiates heat from the high-temperature refrigerant vapor 14 received from the refrigerant vapor generator 15 and condenses it into liquid refrigerant 16, and an endothermic action when evaporating the liquid refrigerant 16 received from the condenser 17. The diluted refrigerant solution 20 is created by combining the evaporator 18 that cools the interior space 2, the refrigerant gas 19 generated by evaporation in the evaporator 18, and the diluted refrigerant solution 20 sent from the refrigerant vapor generator 15. an absorber 21 that absorbs refrigerant gas 19 and restores it to refrigerant solution 13;
The refrigerant solution tank 22 stores the refrigerant solution 13 restored in the absorber 21, and the restored refrigerant solution 13 can be returned to the refrigerant vapor generator 15 from the refrigerant solution tank 22.

In addition, the refrigerant vapor generator 15 is provided with a direct current electric heater 23 and an alternating current electric heater 24 facing the burner 12 .

That is, in the car, the DC electric heater 23 can be made to generate heat by electricity taken from the battery through the cigarette lighter, and indoors, the AC electric heater 24 can be made to generate heat by the electricity taken from the household power supply through the outlet. The heat source of the refrigerant vapor generator 15 can be selectively used accordingly.

Further, as shown in FIGS. 3 to 5, the cylinder joint 9 has a joint pipe 25, and a female threaded portion 27 is provided on the pipe wall of the joint pipe 25.

A base end 29 of the fuel supply pipe 11 is screwed into the base end opening 28 of the joint pipe 25 via a male threaded portion 30 thereof.

A gas cylinder 8 is installed in the tip opening 31 of the joint pipe 25.
A fuel injection nozzle 33 can be screwed onto the fuel injection nozzle 33 through its male threaded portion 34.

An operating lever 36 is attached to the joint pipe 25 via a one-way clutch mechanism 35, and the operating lever 36 is led out of the refrigerator through an operating lever insertion hole 38 provided in a refrigerator wall 37.

The one-way clutch mechanism 35 is constructed as follows.

As shown in FIG. 5, vertical teeth 29 are formed on the outer peripheral wall of the joint pipe 25 in the shape of a gear.
A rotary boss 40 with an operating lever 36 attached to the flange 4 is rotatably fitted on the outer flange 4 of the joint pipe 25, as shown in FIG.
1 and is prevented from coming off from the joint pipe 25.

As shown in FIG. 5, a T-shaped pawl 42 is pivotally supported on the upper surface of the rotary boss 40, and this T-shaped pawl 42 rotates the rotary boss 40 in the normal direction through an operating rod 43 whose tip is guided out of the refrigerator. It is possible to switch between a forward rotational engagement posture 45 that effectively engages the teeth 39 when the rotary boss 40 rotates in the opposite direction, and a reverse rotational engagement posture 47 that effectively engages the teeth 39 when the rotary boss 40 rotates in the reverse direction 46. It is possible to switch the rotational connection.

In other words, the forward rotation 44 of the joint pipe 25 is performed via the one-way clutch mechanism 35 by the operation lever 36.
In operation, as shown in FIG. 4, while the joint pipe 25 is screwed in the threading direction 48 along the base end 29 of the fuel supply pipe 11, the distal end opening 31 of the joint pipe 25 connects to the fuel injection nozzle of the gas cylinder 8. 33, and by reverse rotation 46 of the joint pipe 25 via the one-way clutch mechanism 35 by the operation lever 36, the joint pipe 25 is connected to the proximal end of the fuel supply pipe 11 as shown in FIG. Helical direction 4 along section 29
9, open the tip opening 31 of the joint pipe 25.
is spirally advanced from the fuel injection nozzle 33 of the gas cylinder 8.

The operating lever 36 is of a foldable type, and its tip can be folded along the storage wall 37 when not in use.

In addition, as shown in FIG. 4, the joint pipe 25 enters the fuel injection nozzle 33 at the position where the joint pipe 25 is screwed onto the guide boss 33 and opens the on-off valve in the nozzle 33. The pin 32 is attached to the mounting plate 51.
The mounting plate 51 has a gas passage hole 51a.
is opened.

Furthermore, a fuel supply pipe 11 is provided at the upper part of the joint pipe 25.
A cap 52 is attached which allows the base end 29 of the cap to pass through and surround it, an O-ring 53 is fitted onto the base end 29, and this O-ring 53 connects to the flange provided on the base end 29. 54, and at the position where the joint pipe 25 is screwed onto the fuel injection nozzle 33, an O-ring 53 sandwiched between the flange 54 and the cap 52 connects the base end 29 and the base end opening of the joint pipe 25. Cap 52 from between 28 and 28
The fuel gas cap 52 that has leaked inward is prevented from leaking out.

Note that leakage of fuel gas from between the tip opening 31 of the joint pipe 25 and the guide boss 33 of the gas cylinder 8 is prevented by an O-ring 55 fitted onto the base of the fuel injection nozzle 33. ing.

<<Effect of the invention>> According to the invention, the base end of the fuel supply pipe and the fuel injection nozzle of the gas cylinder can be connected by screwing the base end of the fuel supply pipe and the fuel injection nozzle of the gas cylinder to the joint pipe, respectively. , the connection between the two becomes robust, and the risk of accidental gas leakage from the connection point can be prevented.

In addition, the one-way clutch mechanism can be connected to either forward or reverse rotation, and the operation lever can be operated outside the refrigerator without rotating the gas cylinder itself.
Since the joint pipe can be attached to and detached from the fuel injection nozzle of the gas cylinder, there is no need to insert your hand into the narrow chamber to rotate the gas cylinder, making it easy to replace the gas cylinder.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of a portable gas refrigerator according to an embodiment of the present invention, Fig. 2 is an explanatory view of the mechanism of the refrigerator, Fig. 3 is a front view of the refrigerator with the cylinder joint in an unconnected state, and Fig. 4 The figure is a front view of the connection state of the joint.
FIG. 5 is a sectional view taken along the line A-A in FIG. 4, FIG. 6 is a background explanatory diagram, and FIG. 7 is an explanatory diagram of the prior art. 1... Portable gas refrigerator, 8... Gas cylinder,
9...Cylinder joint, 11...Fuel supply piping, 12
... Burner, 25 ... Joint pipe, 28 ... Proximal opening, 29 ... Proximal end, 31 ... Tip opening, 3
3... Fuel injection nozzle, 35... One-way clutch mechanism, 36... Operation lever, 37... Storage wall,
38...Operation lever insertion hole, 44...Forward rotation, 4
6... Reverse rotation, 48... Screwing backward direction, 49... Spiraling direction.

Claims (1)

[Scope of utility model registration request] Fuel supply pipe 11 with a burner 12 at its tip
The fuel injection nozzle 3 of the gas cylinder 8 is attached to the base end 29 of the gas cylinder 8.
Portable gas refrigerator 1 cylinder joint 9 connecting 3
It has a joint pipe 25 provided with a base end opening 28 to which the base end 29 of the fuel supply pipe 11 is screwed and a tip opening 31 to which the fuel injection nozzle 33 of the gas cylinder is screwed. An operating lever 36 is attached to the pipe 25 via a one-way clutch mechanism 35 that can switch between forward and reverse connections, and the operating lever 36 is led out of the refrigerator through an operating lever insertion hole 38 provided in the storage wall 27, and the operating lever 36 The forward rotation 44 of the joint pipe 25 via the one-way clutch mechanism 35 causes the joint pipe 25 to be connected to the proximal end 29 of the fuel supply pipe 11.
While screwing in the screwing direction 48 along the
The tip opening 31 of the gas cylinder 8 is configured to be screwed onto the fuel injection nozzle 33 of the gas cylinder 8, and a one-way clutch mechanism 35 using the operating lever 36
The joint pipe 2 is rotated by the reverse rotation 46 of the joint pipe 25 via the
5 is screwed in the spiraling direction 49 along the base end 29 of the fuel supply pipe 11, while the tip opening 31 of the joint pipe 25 is screwed back from the fuel injection nozzle 33 of the gas cylinder 8. A cylinder joint for a portable gas refrigerator.