Absorption refrigeration and air conditioning system

Claim 2

A system as defined in claim 1 wherein said exhaust conduit is the engine exhaust pipe downstream from the exhaust manifold and the generator casing has a concave transverse wall curved to fit against the exhaust pipe without any cutting into the exhaust pipe, a pair of conduits extending from the upper side of said casing and communicating with a pair of chambers in the casing defined by a transverse interior baffle, and clamp means for fastening said casing to said exhaust pipe.

Claim 3

In combination with a vehicle having a prime mover providing a source of heat, a cooling system comprising, a heat transfer unit in the space to be cooled; a liquid circuit including said heat transfer unit and mixing valve means operable to receive a hot liquid from one source and a cold liquid from another source and proportion said hot and cold liquids to provide the desired cooling of said space, said cold liquid source being a chiller of an absorption refrigeration circuit with a liquid line therefrom to the mixing valve means; and an absorption refrigeration circuit including said chiller, and a generator for receiving heat from the prime mover including a casing extending along and in contact with a heat source conduit of the prime mover and of a size to provide a constant maximum cooling effect on said chiller at all operating rates of the prime mover.

Claim 4

In combination with a vehicle having a water-cooled engine, a heating and cooling system comprising, a heat transfer unit in the passenger compartment for either heating or cooling said compartment; a liquid circuit including said heat transfer unit and mixing valve means operable to receive a hot liquid from one source and a cold liquid from another source and proportion said hot and cold liquids to provide the desired heating or cooling of the compartment, said source of hot liquid being said engine with a liquid line from the vehicle radiator to the mixing valve means, said cold liquid source being a chiller of an absorption refrigeration circuit with a liquid line therefrom to the mixing valve means and both of said liquids being a mixture of water and anti-freeze solution such as ethylene glycol; and an absorption refrigeration circuit in the engine compartment of the vehicle including said chiller, and a generator having a water-ammonia solution for receiving heat from the exhaust gases of the engine including a casing extending along and in partially wrapped intimate contact with the exhaust conduit of the engine and of a size whereby said generator functions as a natural convection evaporator type of heat transfer device with unrestricted flow of the water-ammonia solution and with unrestricted flow of the exhaust gases in the exhaust conduit with resultant constant maximum cooling effect at all engine speeds and at all loads on the vehicle.

Claim 5

In combination with a vehicle having a prime mover in the form of an engine providing a source of heat, a cooling system for the passenger compartment of the vehicle utilizing an absorption refrigeration circuit including a generator for providing maximum cooling effect continuously any time after the maximum cooling effect is achieved and having a water-ammonia solution for association with the source of heat, said generator comprising, a casing having a length to extend along and externally of the exhaust pipe of the vehicle which provides the source of heat and a concave transverse wall to partially surround and have substantially continuous contact against approximately one-third or more of the exhaust pipe circumference without any breaking into the exhaust pipe to maintain the integrity of the exhaust system and eliminate the possibility of toxic gas leakage and without maintenance problems including seal leakage and subjection of parts to the high temperature and corrosive exhaust gases, said generator functioning as a natural convection evaporator type of heat transfer device and not having any adjustable parts associated therewith for modulating flow of the water-ammonia solution therethrough to have continuous heat extraction from the exhaust pipe with continuous reduction in back pressure in the exhaust pipe for best operation of said engine and whereby there is unmodulated flow of the water-ammonia solution through the generator as well as unmodulated flow of the exhaust gases through the exhaust pipe to provide the continuous maximum cooling effect in the refrigeration circuit even with varying rates of heat transfer from said heat source, and clamp means for fastening said generator casing directly against said exhaust pipe, the cooling system including a heater in the passenger compartment having a liquid coil, a chiller for cooling liquid which passes through said coil and communicating with said absorption refrigeration circuit, and mixing valve means in circuit with said liquid coil and connected to a source of hot liquid for controlling the temperature of the liquid which passes through said liquid coil.

Claim 6

The combination of claim 6 wherein said chiller is positioned outside of said passenger compartment to have complete safety of operation without any potential leakage of noxious refrigerant gases in said passenger compartment.