초록 ▼

A Freon type refrigerant, which is vented from a heat exchange system, such as an air-conditioner, is transferred directly from the exhaust valve of the heat exchange system through a tube to a collecting cylinder or tank. The outer metal side walls of the collecting tank are wrapped with a chemical

A Freon type refrigerant, which is vented from a heat exchange system, such as an air-conditioner, is transferred directly from the exhaust valve of the heat exchange system through a tube to a collecting cylinder or tank. The outer metal side walls of the collecting tank are wrapped with a chemically activatable cold wrap. The cold wrap may, for example, contain therein a rupturable pouch having a chemical blend of ammonium nitrate and urea to isolate same from water within the cold wrap. Upon rupturing of the pouch, the chemical blend is dissolved in the water and an endothermic reaction is initiated. As a result, the heat within the tank is absorbed therefrom by the cold wrap causing the temperature and pressure inside of the tank to drop. This permits substantially all of the refrigerant in the heat exchange system to be transferred into the chilled tank in a condensed or liquid state. Alternately, a series of coils in contact with a chemically activatable cold wrap can be used to also assist the refrigerant to flow from a heat exchange system into a collecting tank in a condensed or liquid form.

대표청구항 ▼

A collecting vessel for receiving a refrigerant which has been cycled through a heat exchange unit, such as refrigerative and air-conditioning units, said collecting vessel comprising: an exterior wall defining a hollow interior; valve means for opening and closing said collecting vessel to permit t

A collecting vessel for receiving a refrigerant which has been cycled through a heat exchange unit, such as refrigerative and air-conditioning units, said collecting vessel comprising: an exterior wall defining a hollow interior; valve means for opening and closing said collecting vessel to permit the refrigerant to flow into and out from the hollow interior when said valve means is opened or closed, respectively; and a chemically activatable cold wrap positioned on said exterior wall for absorbing an effective amount of heat from the hollow interior of said collecting vessel when in its activated state to effect transfer of the refrigerant from the heat exchange unit into the hollow interior of said collecting vessel in a condensed state, said chemically activatable cold wrap comprising reactive chemicals separated from one another when said cold wrap is in its non-use state whereby, upon activating said cold wrap, the reactive chemicals are mixed together to cause them to react with each other to produce an endothermic reaction which effectively cools the hollow interior of said collecting vessel.