초록 ▼

A roof-mounted, modular system of evaporator and condensor units is constructed and designed to be interchangeable with existing condensor and evaporator units on a motorized vehicle, such as, a bus or rail car and can be mounted as a external single system or independently mounted and retrofit for

A roof-mounted, modular system of evaporator and condensor units is constructed and designed to be interchangeable with existing condensor and evaporator units on a motorized vehicle, such as, a bus or rail car and can be mounted as a external single system or independently mounted and retrofit for incorporation into the existing air conditioning and circulating system of the vehicle. The evaporator unit is compact and of low design height and is operable in combination with existing condensor units and compressor systems of the vehicle or can be combined with the modular condensor unit. The evaporator contains evaporator coils flanked on either side by heater coils, an expansion valve and control panel as well as the necessary blower fans together with a damper-controlled fresh air/return air system to meet all heating and cooling requirements of the vehicle.

대표청구항 ▼

In an air conditioner system mounted on the roof of a bus wherein said bus has an upper relatively flat roof, a ceiling spaced beneath said roof with a return air inlet disposed in said roof intermediately between air circulating ducts which extend between said roof and ceiling for directing conditi

In an air conditioner system mounted on the roof of a bus wherein said bus has an upper relatively flat roof, a ceiling spaced beneath said roof with a return air inlet disposed in said roof intermediately between air circulating ducts which extend between said roof and ceiling for directing conditioned air into the interior of said bus, there being compressor means to draw refrigerant from evaporator coils and to discharge said refrigerant under pressure, the improvement comprising: a modular condensor unit having a first shallow, generally rectangular housing including a base panel conforming to the contour of said roof, mutually opposed sidewalls and end walls and a cover, elongated condensor coils extending horizontally within said housing to receive the refrigerant under pressure from said compressor means, and air circulating means for directing air across said condensor coils between said condensor coils and discharging the air through an air outlet in said cover; a modular evaporator unit having a second outer shallow, generally rectangular housing including a base panel conforming to the contour of said roof, mutually opposed sidewalls and front and rear end walls and a cover, means for attaching said base panel to said roof whereby said return air inlet and said air circulating ducts are in communication with the interior of said evaporator housing, said evaporator coils mounted on opposite sides of said return air inlet, and elongated heater coils between each of said evaporator coils and opposite sidewalls of said housing, a fresh air inlet in one said end wall of said evaporator housing, and evaporator air blower means in said evaporator housing for directing air through said return air inlet and fresh air inlet simultaneously across said evaporator coils and heater coils preliminary to discharge through said air circulating ducts into the interior of said bus; and said modular condensor unit and said modular evaporator unit mounted independently of one another on the roof of the bus, and refrigerant lines extending between said condensor unit and said evaporator unit including means for conducting the refrigerant from said condensor coils to said evaporator coils.