Heating system for machine operator's cab

Details Heating system for machine operator's cab Heating system for machine operator's cab

1978-08-21

1980-03-11

Yuen, Henry C.

Heating systems

Heat and power plants

Vehicle

60456, 122 26, 126247, 237 123A, B60H 102

Patent

active

041924568

ABSTRACT:
A machine, such as a self-propelled mobile crane, having an operator's cab and an engine for driving hydraulic pumps to supply fluid to hydraulic motors which drive crane components, is provided with a heating system for the operator's cab. The heating system comprises a heating system hydraulic pump driven by the engine, a fin-and-tube-type heat exchanger located in the cab, a pilot-fluid operated adjustable unloading pressure relief valve connected in circuit between the heating system hydraulic pump and the heat exchanger, and wherein hydraulic energy is converted to thermal energy because of a large pressure drop therein; a solenoid valve for adjusting the pressure relief valve to control the hydraulic fluid pressure drop and, therefore, temperature, and prevent excessive temperature; a first thermostat responsive to the hydraulic fluid temperature for controlling the solenoid valve; a motor-driven adjustable-speed fan in the cab for directing air across the heat exchanger to heat the air in the cab; and a rheostat or multispeed switch to control fan speed and, thus, the rate of heat transfer between the heat exchanger and the cab air and thus, cab air temperature.

REFERENCES:
patent: 2764147 (1956-09-01), Brunner
patent: 3187498 (1965-06-01), Firth et al.
patent: 3365133 (1968-01-01), Norton et al.
patent: 4069972 (1978-01-01), Hausmann
patent: 4114809 (1978-09-01), Sampson
patent: 4126993 (1978-11-01), Grattapaglia et al.
patent: 4129986 (1978-12-01), Heinrich
patent: 4136824 (1979-01-01), Kallenbach

Affiliated with

Also associated with

Rating

Heating system for machine operator's cab does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heating system for machine operator's cab, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heating system for machine operator's cab will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1997765