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Digital controller for scroll compressor condensing unit

A controller and condenser technology, applied in refrigerators, pump components, refrigeration components, etc., can solve problems such as joint leakage

Inactive Publication Date: 2008-10-01
COPELAND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long pipe runs always mean more pipe joints, which can leak

Method used

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  • Digital controller for scroll compressor condensing unit
  • Digital controller for scroll compressor condensing unit
  • Digital controller for scroll compressor condensing unit

Examples

Experimental program
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Embodiment Construction

[0028] Referring now to the drawings, the same reference numerals in the drawings indicate the same corresponding parts. Fig. 1 shows a conventional refrigeration system indicated by the general numeral 10. The refrigeration system 10 includes a plurality of compressors 12 and a condenser 14 which are remote from the plurality of refrigerators 16. In this description, the compressor 12 is configured as a parallel unit, and the parallel unit is located in the machine room or on the roof 18. The compressor 12 supplies a condenser 14 which can be air-cooled or water-cooled. The condenser 14 sends the liquid refrigerant to a receiver 20. The receiver 20 sends the refrigerant to the refrigerators 16. As shown in the figure, the freezer 16 is connected in parallel. In most cases, the liquid pipe solenoid valve 22 is used to adjust the refrigerant flow to the relevant evaporator 24. The refrigerant is sent to the evaporator 24 through a suitable expansion device such as an expansion valv...

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PUM

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Abstract

A cooling system controller controls the capacity of a variable capacity compressor based upon the temperature of a housing being cooled, the suction pressure of the compressor or both of these criteria. The cooling system controller is capable of controlling either single-evaporator or multiple-evaporator refrigeration systems. The multiple-evaporator systems can have evaporators of similar temperatures or of mixed temperatures. The controller also allows the use of one or more condenser fans that are operated in a lead / lag fashion to control the cooling capability of the system.

Description

[0001] This application is a divisional application of a patent application with an application number of 02102431.6, an application date of January 21, 2002, and an invention title of "Digital Scroll Condensing Unit Controller". Technical field [0002] The present invention generally relates to a controller for a condensation unit of a refrigeration system or other cooling system. More specifically, the present invention relates to a condensing unit using a variable capacity compressor, which is controlled by pulse width modulation by using variable duty cycle signals obtained from one or more system sensors. The condensing unit controller can control a single evaporator or multiple evaporators with similar or mixed temperatures. Background technique [0003] The invention is described in connection with a refrigeration system. It should be noted that the condensing unit of the present invention can be used in any other cooling system as desired. [0004] Conventionally, the ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F04C28/00F04C18/02F04C23/00F04C27/00F04C28/18F04C28/24F04C28/26F04C28/28F04C29/04F25B1/04F25B5/02
CPCF04C28/18F04C18/0215F04C23/008F04C27/005F04C28/265F04C28/28F04C29/04F04C29/042F25B1/04F25B5/02F25B49/022F25B2400/075F25B2400/13F25B2400/22F25B2400/23F25B2600/026F25B2600/111F25B2700/1933F25B2700/21152F25B2700/2117Y02B30/743Y02B30/70F04C28/00F04C28/24
Inventor 亨·M·潘理查德·P·沃格三世内格拉杰·杰伊安斯
Owner COPELAND CORP