Purge system for chiller system

Patent metadata

Field	Value
Publication number	US-11835276-B2
Application number	US-202117386878-A
Country	US
Kind code	B2
Filing date	Jul 28, 2021
Priority date	Apr 19, 2016
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A purge system for removing non-condensables from a chiller system includes a purge chamber, a plurality of carbon beds fluidly connected to the purge chamber into which a flow of refrigerant and non-condensables is selectably directed from the purge chamber to remove the non-condensables therefrom. A vent line is fluidly connected to the plurality of carbon beds to dispose of the collected non-condensables, and a heater is operably connected to the plurality of carbon beds to selectably heat one or more of the carbon beds of the plurality of carbon beds to release refrigerant therefrom and direct the released refrigerant to the purge chamber.

First claim

What is claimed is:

1. A purge system for removing non-condensables from a chiller system, the purge system comprising:
a purge chamber;
a plurality of carbon beds fluidly connected to the purge chamber into which a flow of refrigerant and non-condensables is selectably directed from the purge chamber to remove the non-condensables therefrom;
a vent line fluidly connected to the plurality of carbon beds to dispose of the collected non-condensables;
a heater operably connected to the plurality of carbon beds to selectably heat one or more of the carbon beds of the plurality of carbon beds to release refrigerant therefrom and direct the released refrigerant to the purge chamber; and
a sensor to detect presence of refrigerant in the vent line;
wherein the sensor is positioned along a fluid path between a first carbon bed of the plurality of carbon beds and a second carbon bed of the plurality of carbon beds; and
wherein when the sensor detects the presence of refrigerant, flow is moved from the first carbon bed through the second carbon bed and to the purge chamber.

2. The purge system of claim 1 , wherein the plurality of carbon beds are arranged in a fluidly parallel arrangement.

3. The purge system of claim 1 , further comprising a plurality of heaters, each heater operably connected to a carbon bed of the plurality of carbon beds.

4. The purge system of claim 1 , wherein the plurality of carbon beds are arranged in a fluidly serial arrangement.

5. The purge system of claim 1 , further comprising a pumping element to urge flow from the purge chamber to the plurality of carbon beds.

6. The purge system of claim 5 , wherein the pumping element is one of a compressor or a vacuum pump.

7. The purge system of claim 1 , further comprising a purge chamber outlet to selectably direct refrigerant from the purge chamber to the chiller system.

Assignees

• Carrier Corp

Inventors

• Ma Zidu
• Rydkin Ivan
• Clough Warren

Classifications

• B01D2253/102

  Carbon · CPC title

• B01D53/02

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title

• F25B49/02

  for compression type machines, plants or systems · CPC title

• F25B43/043 Primary

  for compression type systems · CPC title

• F25B45/00 Primary

  Arrangements for charging or discharging refrigerant · CPC title