US 10,969,149 B2Granted

Refrigerant compressor system

AssigneeBITZER Kuehlmaschinenbau GmbH

InventorAndreas Schulaks

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Abstract

In order to improve the operational reliability of a refrigerant compressor system that includes a first refrigerant line that conducts expanded refrigerant, a second refrigerant line that conducts compressed refrigerant, at least one refrigerant compressor that is arranged between the first and the second refrigerant line and is driven by a motor, and a control unit for operating the refrigerant compressor system, it is proposed that the control unit should have a first central processing unit and at least one input/output unit for control variables that communicates with the first central processing unit, and that there should be associated with the first central processing unit a second central processing unit which, in the event of a failure of the first central processing unit, takes over the control functions for the purpose of controlling the refrigerant compressor system.

Claims26

Dependent claims

A refrigerant compressor system, including:

a first refrigerant line that conducts expanded refrigerant,
a second refrigerant line that conducts compressed refrigerant,
at least one refrigerant compressor that is arranged between the first and the second refrigerant line and is driven by a motor,
and a control unit for operating the refrigerant compressor system, the control unit having a first central processing unit,
a plurality of input/output units are associated with a bus system that communicates with the first central processing unit that respectively controls the refrigerant compressor system,
wherein sensors, associated with the refrigerant compressor system, are associated with the plurality of input/output units that are associated with the bus system, and
wherein redundant sensors are associated with the sensors that are primarily provided for operation, and in that the redundant sensors are connected to different input/output units of the control unit from those sensors primarily provided for operation.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/702,841Filed 13 Sep 2017 · continuation
Priority: DE 10 2015 103 730.013 Mar 2015
Published: US 2018/0003422 A14 Jan 2018
Granted: 6 Apr 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F25B 49/022
For compression type machines, plants or systems: compressor control arrangements
F04B 27/24
Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders: control not provided for in a…
F04B 39/121
Casings; Cylinders; Cylinder heads; Fluid connections: casings
F04B 49/065
Control using electricity: and making use of computers