Refrigerating circuit apparatus with memory having a plurality o

Details Refrigerating circuit apparatus with memory having a plurality o Refrigerating circuit apparatus with memory having a plurality o

1989-05-22

1990-10-02

Wayner, William E.

Refrigeration

Automatic control

Time or program actuator

622284, 236 78D, 417 45, G05D 2332

Patent

active

049599690

ABSTRACT:
A refrigerating circuit apparatus comprises a variable capacity compressor for compressing refrigerant, an inverter circuit for supplying a variable output frequency to the compressor, a memory for storing data representing at least two different control modes including a first mode wherein the output frequency of the inverter circuit is changed at one frequency changing rate until the difference between the actual pressure value of refrigerant flowing into the compressor and a set value is minimum and a second mode wherein the output frequency of the inverter circuit is changed at a different frequency changing rate until the difference between the actual pressure value of refrigerant flowing into the compressor and the set value is minimum, a select switch for selecting either first or second mode stored in the memory and a control circuit for varying the output frequency of the inverter circuit based on the selected mode to control the rotation speed of the compressor. Thus, the refrigerating circuit apparatus may be adopted to different kinds of refrigerating apparatus, e.g., display cases or refrigerators, by selecting either first or second mode stored in the memory.

REFERENCES:
patent: 3646454 (1972-02-01), Southern
patent: 4675804 (1987-06-01), Wiemer

Affiliated with

Also associated with

Rating

Refrigerating circuit apparatus with memory having a plurality o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Refrigerating circuit apparatus with memory having a plurality o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigerating circuit apparatus with memory having a plurality o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-286909