Emission canister system for a hvac&r system
AssigneeJohnson Controls Tyco IP Holdings LLP
InventorMaccrae William Monteith
Life of this patent
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Abstract
The present disclosure relates to a purge system for a vapor compression system, where the purge system includes an emission canister configured to receive a gas flow. The gas flow includes a mixture of non-condensable gases and refrigerant of the vapor compression system. An adsorbent material is disposed within the emission canister and configured to adsorb the refrigerant and enable the non-condensable gases to flow toward an exhaust of the emission canister, where the adsorbent material is a silica gel.
Claims20
A purge system for a vapor compression system, comprising:
- a heat exchanger configured to receive a flow of refrigerant and non-condensable gases from a condenser of the vapor compression system;
- a vacuum pump fluidly coupled to the heat exchanger and configured to draw gaseous refrigerant and non-condensable gases from the heat exchanger;
- and
- a controller configured to control operation of the vacuum pump based on comparison of a pressure within the condenser to an ambient pressure of an environment surrounding the vapor compression system.
A heating, ventilation, air conditioning, and refrigeration (HVAC&R), comprising:
- a vapor compression system comprising a condenser;
- a purge system configured to remove non-condensable gases from the vapor compression system;
- a heat exchanger of the purge system configured to receive a flow of refrigerant and non-condensable gases from the condenser;
- a vacuum pump of the purge system fluidly coupled to the heat exchanger and configured to draw gaseous refrigerant and non-condensable gases from the heat exchanger;
- a first sensor configured to detect a pressure within the HVAC&R system;
- a second sensor configured to detect an ambient atmospheric pressure external to the HVAC&R system;
- and
- a controller communicatively coupled to the vacuum pump, the first sensor, and the second sensor, wherein the controller is configured to:
- receive data indicative of the pressure within the HVAC&R system from the first sensor;
- receive data indicative of the ambient atmospheric pressure from the second sensor;
- compare the pressure within the HVAC&R system to the ambient atmospheric pressure;
- and
- adjust operation of the vacuum pump based on the comparison.
A controller for a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system including a purge system and a vapor compression system, wherein the controller comprises:
- a processor;
- and
- a memory device comprising processor-executable instructions stored thereon, wherein the processor-executable instructions, when executed by the processor, cause the processor to:
- receive data indicative of a pressure within the HVAC&R system;
- receive data indicative of an ambient atmospheric pressure external to the HVAC&R system;
- compare the pressure within the HVAC&R system to the ambient atmospheric pressure;
- and
- in response to a determination that the pressure within the HVAC&R system exceeds the ambient atmospheric pressure by a threshold amount:
- deactivate a vacuum pump of the purge system;
- reduce a speed of the vacuum pump of the purge system;
- or
- both.
Dependencies are inferred from the claim text.