Patent ID: 11971192
Assignee: ROBERT BOSCH GMBH
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. An environmental control unit comprising,
a housing including a first end that rests on a support surface, a closed second end that is spaced apart from the first end, a sidewall that extends between the first end and the second end, an air inlet, and an air outlet,
a blower disposed in the housing, the blower configured to draw air into the housing via the air inlet and exhaust air from the housing via the air outlet,
a heat exchanger disposed in the housing,
a compressor disposed within housing, and
noise reduction features,
wherein the noise reduction features include a noise-reducing enclosure that receives the compressor, the enclosure including
a rigid metal shell,
an outer insulating structure fixed to an outside surface of the shell, and
an inner insulating structure fixed to an inside surface of the shell,, and wherein
the outer insulating structure comprises: a first sheet of mass loaded plastic; and a first layer of foam insulation that is disposed between the first sheet of mass loaded plastic and the shell, and
the inner insulating structure comprises: a second sheet amass loaded plastic; and a second layer of foam insulation, and the second sheet of mass loaded plastic is disposed between the second layer of foam insulation and the shell.