Transport refrigeration system control

Details Transport refrigeration system control Transport refrigeration system control

1982-06-09

1983-12-13

Makay, Albert J.

Refrigeration

Automatic control

Refrigeration producer

62126, 62158, 623231, 62229, 165 26, 123198D, F25B 100, F25B 4900, G05D 2332

Patent

active

044198663

ABSTRACT:
A transport refrigeration unit powered by a two speed prime mover and having the capability of providing at least four modes of operation is controlled by an arrangement as shown in FIG. 2 which provides for operation in either a continuous cycle in which the prime mover runs continuously to provide the modes shown in FIG. 3 or, alternatively, operates in a start-stop cycle to provide the modes of operation shown in FIG. 4. The control in both of the cycles of operation provide for delays in the change of speed from low to high upon certain departures in temperature from one temperature band to another band which would normally call for high speed operation.

REFERENCES:
patent: 1981859 (1934-11-01), Frese
patent: 2850001 (1958-09-01), Jones
patent: 2887853 (1959-05-01), Talmey
patent: 3499297 (1970-03-01), Ruff et al.
patent: 3551686 (1970-12-01), Koehler et al.
patent: 3691393 (1972-09-01), Papachristou
patent: 3926167 (1975-12-01), Camp
patent: 4325224 (1982-04-01), Howland

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