JPS5812025B2 - Stabilized platinum asbestos pocket burner powered by liquefied gas such as propane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stabilized platinum-asbestos hand warmer that uses liquefied gas such as propane as fuel.

Conventional platinum-asbestos hand warmers that use petroleum benzene as fuel have various drawbacks, such as difficulty in igniting, inability to control temperature, and inability to use intermittently.

Nowadays, the introduction of platinum-asbestos pocket warmers, which use liquefied gases such as propane as fuel, could be considered as something that could wipe out these shortcomings, but these could also provide safe and stable heat retention by stably supplying a very small amount of gas for a long time. is difficult to obtain and therefore, at the time of this application, no examples of this are yet known.

Here, the stabilized platinum asbestos pocket warmer that uses liquefied gas such as propane as fuel according to the present invention has an automatic/manual temperature control mechanism, an overheat prevention mechanism such as a limiter, a bypass pipe, and other safety and stabilization mechanisms. By providing this, the above-mentioned drawbacks can be eliminated and safe and stable operation can be expected.

Hereinafter, one embodiment will be described in detail, including its configuration, operation, and effects, with reference to the accompanying drawings.

The figure is a conceptual diagram summarizing the configuration of a stabilized platinum-asbestos hand warmer using liquefied gas such as propane as fuel according to the present invention.

In the figure, 1 denotes a fuel container, the inside of which is filled with liquefied gas 4 such as propane through a fuel injection port 2 and an injection valve 3.

13 indicates the user, and the connecting arrow indicates manual operation.

Now, when the user 13 opens the fuel opening/closing valve 6 and opens the gas amount adjustment valve 7 to an appropriate position, the fuel delivery pipe 5,
A gas distribution pipe 9 is filled with gas through a gas supply pipe 8, and fuel gas is released from a gas hole 10.

The gas holes 10 are minute holes whose diameter increases from the gas inlet to the tip, and are provided at several locations on the gas distribution pipe 9.

These gas holes are shown in a large size because they are not clear in the drawing, but they are actually minute holes with different diameters, and thereby supply a uniform concentration of gas into the combustion chamber 23 without being biased.

11 represents asbestos, and 12 represents platinum for catalysts.

After opening the fuel opening/closing valve 6 and the gas amount adjustment valve 7,
~6 seconds later, when the combustion chamber 23 is filled with gas, the user 1
3, the ignition mechanism 14 is operated to ignite the gas in the combustion chamber 23.

Although a ceramic piezoelectric element with no consumable parts was used as the internal lid mechanism 14 in this embodiment, similar ignition is also possible with mechanical devices such as files and flints, or with a battery-powered heater or high-voltage generating circuit. It is.

Reference numeral 15 indicates a discharge electrode that causes spark discharge to ignite when a high voltage is applied, and reference numeral 16 indicates its counter electrode.

Ignition is extremely easy, and a single ignition operation ignites more reliably than a regular gas lighter.

At the time of ignition, the combustion chamber 23 is filled with gas, and as this is directly combusted, a considerable amount of heat is released regardless of the catalytic effect of platinum, but after 2 to 3 seconds, the gas is released in an appropriate amount, which is extremely small. The catalytic effect of platinum occurs and burns efficiently and is maintained at an appropriate temperature.

22 is a bimetal, and when the temperature of the combustion chamber 23 rises, it moves to the reference line position, and as the link 18 moves in the direction of arrow A, the gas amount control valve 7 is actuated in the direction of throttling, and the gas supply amount is reduced. The temperature of the combustion chamber 23 decreases.

When the temperature of the combustion chamber 23 decreases, the bimetal 22 returns to its original state and the link 18 moves in the direction of arrow B, increasing the amount of gas supplied and raising the temperature of the combustion chamber 23 again. From now on, this process is automatically repeated to maintain the appropriate temperature. can be sustained.

In 17, the gas amount adjustment valve 7 is bimetal 22, and the connection 1
A bypass pipe with a fine cross section is used to supply the minimum amount of gas necessary to maintain combustion, regardless of the valve, so that combustion does not stop even when the valve is completely closed. be.

The gas amount adjustment valve 7 is complete as it is equipped with a gas supply amount upper limiter having a fine cross-sectional flow path to prevent overheating due to oversupply of gas. Although it is automatically limited at 18, manual operation by the user 13 is also possible as shown by reference line 19, and thereby the automatic temperature control reference point can be set arbitrarily.

Furthermore, since liquefied gas such as propane is at risk of explosion due to temperature rise due to external heating of the fuel container 1, the heat insulating material 20 blocks radiation and conduction of heat from the combustion chamber 23.

In addition, a pipe made of a material having heat resistance and low thermal conductivity, such as Teflon (trade name of DU PONT), is used in the middle of the gas supply pipe 8 to prevent heat conduction from the combustion chamber 23 through the pipe.

21 indicates a pocket warmer body made of metal or the like with good heat conduction.

Furthermore, in extremely cold environments, the vaporization rate of liquefied gases such as propane deteriorates, and for this reason, the sub-valve 2 is made of bimetallic material 25 and has a fine flow path, which is activated depending on the temperature of the fuel container 1.
By providing a fine adjustment mechanism for controlling the opening and closing of the gas supply pipe 4 and supplying gas to the gas supply pipe 8, stable ignition can be expected easily.

As mentioned above, the stabilized platinum-asbestos hand warmer using liquefied gas such as propane as a heating material according to the present invention has the following advantages: 1. Ignition is extremely easy and reliable due to the built-in ignition mechanism.

2. The device of this embodiment can be used for a long time, approximately 200 hours with one fuel charge.

3. Intermittent use within a cumulative time of about 200 hours can be done very arbitrarily.

4. Since platinum asbestos does not get wet, stable operation can be expected over an extremely long period of time.

5. It is possible to set a temperature control reference point, and temperature control in the vicinity is automatically and stably performed.

6. There is no need to carry accessories such as ignition tools and funnels when refueling and igniting.

These and other disadvantages of conventional platinum-asbestos hand warmers that use petroleum benzine as fuel can be eliminated, and they are also highly effective as stabilized platinum-asbestos hand warmers that use liquefied gases such as propane as fuel.

[Brief explanation of the drawing]

The attached drawing is a conceptual diagram summarizing the structure of an embodiment of a stabilized platinum-asbestos hand warmer using liquefied gas such as propane as fuel according to the present invention. In the figure, 1 is a fuel container, 4 is a liquefied gas such as propane,
6 is a fuel opening/closing valve, 7 is a gas amount adjustment valve, 9 is a gas distribution pipe, 11 is asbestos, 12 is platinum, 13 is a user, 14
15 is an ignition mechanism, 15 is a discharge pole, 17 is a bypass pipe, 22 is a bimetal, and 23 is a combustion chamber.

Claims (1)

[Scope of Claims] 1. A fuel tank that uses liquefied gas such as propane as fuel, isolates heat around the fuel container 1 with a heat insulating material 20, has a built-in electrical or mechanical ignition mechanism, and separately operates in accordance with the temperature of the combustion chamber 23. By providing a bimetal 22 or a gas volume control valve 7 which also has a manually controlled gas supply upper limit limiter, an arbitrary temperature control reference point can be set, and the temperature can be adjusted near the temperature control reference point. The gas amount adjustment valve 7 is controlled by the bimetal 22 by providing a bypass valve 17 with a fine cross section that is connected in parallel with the gas amount adjustment valve 7. The gas inlet is supplied with the minimum amount of gas necessary to maintain combustion even when it is completely closed by the operation of the A uniform concentration of gas is supplied into the combustion chamber 23 by a gas distribution pipe 9 in which fine gas holes 10 whose diameters increase as they move toward the tip are provided at appropriate locations, and this is ignited by a built-in ignition mechanism,
A stabilized platinum-asbestos pocket warmer that uses liquefied gas such as propane as fuel and can maintain an appropriate temperature arbitrarily by the effects of platinum 12 and asbestos 11 in the combustion chamber 23. 2 Bimetal 25 that operates depending on the temperature of the fuel container 1
The fuel cell according to claim 1 further includes an adverbial clause valve 24 which is controlled by the gas flow rate control valve 7 and has a gas supply upper limiter connected in parallel with the gas flow rate regulating valve 7 to facilitate ignition in a cold environment. A stabilized platinum asbestos pocket burner that uses liquefied gas such as propane as fuel.