Stoves and furnaces – Stoves – Cooking
Patent
1998-06-10
2000-07-18
Dority, Carroll
Stoves and furnaces
Stoves
Cooking
431206, F24C 520
Patent
active
060892188
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a vaporization acceleration device for a high-calorie gas appliance to which a fuel gas cassette containing therein liquefied fuel gas such as normal butane or isobutane can be set, and more particularly to such a vaporization acceleration device which makes it feasible to continuously supply the fuel gas from the cassette to the gas appliance so that stable calorie can be obtained and to exhaust the fuel gas cassette without any residual gas.
There have been in wide use various gas appliances employing the fuel gas cassette such as a portable cooking stove. Such a cassette type cooking stove is required to be large in heat capacity and it is further preferred that the fuel gas cassette can be exhausted for an economic reason and the like. When these requirements are met, the cassette type gas appliances will be used wider coupled with their convenience. This invention is directed to these situations.
BACKGROUND
In a cassette type gas appliance such as a cassette type cooking gas stove, a cassette type gas stove or the like, the fuel gas can be successively supplied from the fuel gas cassette to the burner without any problem at normal temperatures and the fuel gas in the cassette can be easily exhausted so long as the gas appliance is of a low-calorie type which is lower than 1800 kcal/hr in caloric force.
On the other hand, in the case of a high-calorie gas appliance where the caloric force is not lower than 1800 kcal/hr, the amount of vaporizing liquefied gas in the cassette increases with increase in gas supply to the burner. As the amount of vaporizing liquefied gas in the cassette increases, vaporization latent heat increase and when the vaporization latent heat exceeds the heat capacity of the cassette casing and the liquefied gas therein and the quantity of heat from surroundings, the temperature of the liquefied gas in the cassette lowers, which lowers the equilibrium gas pressure. When the equilibrium gas pressure lowers, a required amount of vaporized gas cannot be supplied to the burner from the cassette, which lowers the caloric force at the burner to make trouble in use of the gas appliance and makes it difficult to exhaust the cassette of the liquefied gas therein.
That is, when the caloric force is weakened in response to reduction in gas supply due to temperature drop of the fuel gas cassette, the user will consider the cassette to be exhausted and attempt to replace the fuel gas cassette. However when the user shakes the removed cassette, he or she will know that there remains some liquefied gas in the cassette. When the temperature of the cassette is elevated to the room temperature, gas supply becomes feasible again but the temperature of the cassette will drop soon to cause a shortage of fuel supply. Thus it is troublesome to exhaust the cassette of liquefied gas. Further the fact that good combustion cannot be obtained though there remains liquefied gas in the cassette causes the gas appliance and/or the fuel gas cassette to seem defective and damages reliability of the products.
Thus it is most preferred that the gas appliance burns at a predetermined high-calorie so long as there remains any amount of liquefied gas in the cassette and is quenched with its caloric force abruptly weakened when the cassette is exhausted.
As disclosed, for instance, in Japanese Unexamined Patent Publication No. 55(1980)-25757, there has been known a structure in which the fuel gas cassette is heated by heat of the burner through a heat transfer plate. That is, in the structure, the heat transfer plate is disposed with its one part positioned near the burner and its another part in contact with a fuel gas cassette set to the gas appliance so that heat of the burner is transferred to the cassette to suppress temperature drop of the liquefied gas in the cassette due to vaporization latent heat, thereby accelerating vaporization of the liquefied gas to ensure sufficient gas supply to the burner and to ensure exhaustion of the cassette.
However this approa
REFERENCES:
Japanese Utility Model Application No. 175492/1977 (Laid-Open No. 100880/1979).
Mifune Hideo
Nakamura Yasuaki
Dority Carroll
Tokai Corporation
LandOfFree
Vaporization acceleration device for high-calorie gas appliance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vaporization acceleration device for high-calorie gas appliance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vaporization acceleration device for high-calorie gas appliance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2025738