초록

In a transport refrigeration unit, top and front shutters are controlled to open in sequence upon rising temperatures being sensed by temperature responsive control means located in a recirculation passage between the shutters.

대표청구항 ▼

In a transport refrigeration unit of the type having an internal combustion prime mover and including a cabinet external of the space being conditioned, and having a refrigerant condenser and a cooling radiator for said prime mover in the upper portion of said cabinet along with a fan for moving air

In a transport refrigeration unit of the type having an internal combustion prime mover and including a cabinet external of the space being conditioned, and having a refrigerant condenser and a cooling radiator for said prime mover in the upper portion of said cabinet along with a fan for moving air through said condenser and radiator, the cabinet having a front opening and top opening, an airflow control arrangement comprising: front shutter means in said front opening; top shutter means in said top opening; means for controlling the opening of said top and said front shutter means independently of each other and in response to temperature sensed within said cabinet, said controlling means being operative to initiate opening of said top shutter means upon a rising sensed temperature less than the temperature at which opening of said front shutter means is initiated.