Vehicle heating and cooling mechanism

Claim 2

Mechanism for controlling by ejector action the circulation, make-up, and temperature of air in the passenger compartment of a transportation type vehicle having a chamber located above the passenger compartment between the roof of such vehicle and a ceiling spaced downwardly therefrom, such chamber having an air discharge opening into the passenger compartment extending along each side of the ceiling, and an air return opening from the passenger compartment extending longitudinally of the center of the ceiling, a high pressure air line extending longitudinally within the chamber above such air return opening, a plurality of nozzles mounted at spaced intervals along each side of the air line to discharge jets of compressed air from the air line laterally in both directions into such chamber in the form of high velocity air jets, a plurality of ejector tubes, each having a small inlet end and a wide, flattened discharge end mounted transversely of the chamber with the inlet end of each thereof located in the zone of such return air opening, and in ejector relation with its associated nozzle, and the discharge end thereof directed laterally outwardly to direct a stream of mixed nozzle and return air discharged therefrom toward and downwardly through each air discharge opening into the passenger compartment, and a controlled temperature, heat transfer tube mounted to extends along each side of the chamber in the path of the air streams discharged by the ejector tubes along such each side of the chamber.

Claim 3

Air control mechanism as claimed in claim 1 wherein the roof and ceiling curve downwardly in divergent curves as they near each side of the bus to define a gradually widened, downwardly curved chamber portion therebetween, and at least one air discharge opening is provided at the lower, laterally outward end of each of such chamber portion.

Claim 4

Air control mechanism as claimed in claim 1 wherein at least two heat transfer tubes extend longitudinally along each side of the chamber, one for circulating high temperature fluid, and the other for circulating low temperature fluid therein.

Claim 5

Air control mechanism as claimed in claim 1 wherein each air discharge opening is located to discharge a stream of air from the chamber downwardly across a window provided in each side of the passenger compartment.

Claim 6

A combined heating and air conditioning system for the passenger compartment of a transportion type vehicle having a chamber above the passenger compartment defined by, and located between, the roof and ceiling of such vehicle, such chamber haVing a downwardly directed air discharge opening into the passenger compartment extending lengthwise along each side of such ceiling, and having an air return opening from the passenger compartment extending lengthwise centrally of such ceiling, a compressed air line extending from a point exteriorly of, and lengthwise within, such chamber above such air return opening, a plurality of laterally directed nozzles mounted at spaced intervals along each side of the air line to discharge a laterally directed jet of air from each nozzle, a plurality of laterally directed nozzles mounted at spaced intervals along each side of the air line to discharge a laterally directed jet of air from each nozzle, a laterally directed ejector tube mounted with its inlet end operatively associated with each nozzle and its outlet end directed laterally toward one of such discharge openings, each ejector tube flaring outwardly from its inlet toward its outlet end to reduce the speed of a stream of mixed nozzle, and return air flowing therethrough by ejector action, and at least one temperature controlled heat transfer element mounted in the paths of the streams of air flowing by ejector action through said ejector tubes for controlling the temperature of such air for discharge downwardly through the discharge opening into the passenger compartment.

Claim 7

A combined heating and air conditioning system for the passenger compartment of a transportion type vehicle having a chamber above the passenger compartment defined by, and located between, the roof and ceiling of such vehicle, such chamber haVing a downwardly directed air discharge opening into the passenger compartment extending lengthwise along each side of such ceiling, and having an air return opening from the passenger compartment extending lengthwise centrally of such ceiling, a compressed air line extending from a point exteriorly of, and lengthwise within, such chamber above such air return opening, a plurality of laterally directed nozzles mounted at spaced intervals along each side of the air line to discharge a laterally directed jet of air from each nozzle, a plurality of laterally directed nozzles mounted at spaced intervals along each side of the air line to discharge a laterally directed jet of air from each nozzle, a laterally directed ejector tube mounted with its inlet end operatively associated with each nozzle and its outlet end directed laterally toward one of such discharge openings, each ejector tube flaring outwardly from its inlet toward its outlet end to reduce the speed of a stream of mixed nozzle, and return air flowing therethrough by ejector action, and at least one temperature controlled heat transfer element mounted in the paths of the streams of air flowing by ejector action through said ejector tubes for controlling the temperature of such air for discharge downwardly through the discharge opening into the passenger compartment.