Emission canister system for a HVAC and R system

Patent metadata

Field	Value
Publication number	US-11738298-B2
Application number	US-201816650349-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Sep 27, 2017
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

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.

First claim

The invention claimed is:

1. A purge system for a vapor compression system, comprising:
an emission canister configured to receive a gas flow, wherein the gas flow comprises a mixture of non-condensable gases and a refrigerant of the vapor compression system;
an adsorbent material disposed within the emission canister, wherein the adsorbent material is configured to adsorb the refrigerant and enable the non-condensable gases to flow toward an exhaust of the emission canister, and wherein the adsorbent material comprises a silica gel;
a baffled divider disposed within a housing of the emission canister, wherein the baffled divider comprises a plurality of fins extending radially outward, and wherein the baffled divider is slideably removeable from the housing; and
a heating element disposed within the housing, wherein the heating element extends along a central axis of the emission canister and is offset from the central axis.

2. The purge system of claim 1 , wherein the emission canister is configured to direct the gas flow within the emission canister in a direction generally parallel to the central axis of the emission canister, wherein a first dimension of the emission canister along the central axis is greater than a second dimension of the emission canister crosswise to the central axis.

3. The purge system of claim 2 , wherein the first dimension and the second dimension define a ratio, and wherein the ratio of the first dimension to the second dimension is greater than 3:1 or substantially equal to 3:1.

4. The purge system of claim 1 , wherein the plurality of fins abuts an interior surface of the emission canister to divide an interior of the emission canister into a plurality of chambers.

5. The purge system of claim 4 , wherein the adsorbent material is disposed within each chamber of the plurality of chambers, wherein a first chamber of the plurality of chambers is configured to receive the gas flow via an inlet of the emission canister, wherein a fin of the plurality of fins defining the first chamber includes an aperture, and wherein the gas flow is configured to flow from the first chamber to a second chamber of the plurality of chambers via the aperture.

6. The purge system of claim 5 , wherein the plurality of fins is configured to direct the gas flow through the plurality of chambers in a serpentine pattern about the central axis of the emission canister.

7. The purge system of claim 1 , further comprising:
a conduit system coupled to the emission canister, wherein the conduit system is configured to receive the gas flow from the vapor compression system via an inlet of the conduit system and direct the gas flow toward the emission canister;
an additional emission canister coupled to the conduit system; and
a plurality of valves of the conduit system, wherein the plurality of valves is configured to selectively direct the gas flow to the emission canister during a regeneration cycle of the additional emission canister, and the plurality of valves is configured to selectively direct the gas flow to the additional emission canister during a regeneration cycle of the emission canister.

8. A purge system for a vapor compression system, comprising:
an emission canister system, wherein the emission canister system comprises:
a first emission canister coupled to a conduit system, wherein the conduit system comprises an inlet configured to receive a gas flow comprising a mixture of a refrigerant and non-condensable gases from the vapor compression system;
a second emission canister coupled to the conduit system;
a third emission canister coupled to the conduit system;
a fourth emission canister coupled to the conduit system; and
a plurality of valves of the conduit system, wherein the plurality of valves is configured to:
selectively direct the gas flow to the first emission canister during a regeneration cycle of the second emission canister, during a cooldown cycle of the third emission canister, and during a standby cycle of the fourth emission canister, such that the first emission canister is configured to undergo a saturation cycle while the second emission canister undergoes the regeneration cycle, the third emission canister undergoes the cooldown cycle, and the fourth emission canister undergoes the standby cycle; and
selectively direct the gas flow to the fourth emission canister during a corresponding regeneration cycle of the first emission canister, during a corresponding cooldown cycle of the second emission canister, and during a corresponding standby cycle of the third emission canister, such that the fourth emission canister is configured to undergo a corresponding saturation cycle while the first emission canister undergoes the corresponding regeneration cycle, the second emission canister undergoes the corresponding cooldown cycle, and the third emission canister undergoes the corresponding standby cycle.

9. The purge system of claim 8 , wherein the first emission canister, the second emission canister, the third emission canister, the fourth emission canister, or a combination thereof, comprises a silica gel adsorbent material.

10. The purge system of claim 8 , wherein the conduit system comprises the inlet, an outlet, and a vent of the purge system.

11. The purge system of claim 10 , wherein the vent is in fluid communication with a first vent valve of the plurality of valves, a second vent valve of the plurality of valves, a third vent valve of the plurality of valves, and a fourth vent valve of the plurality of valves, wherein the first vent valve is configured to direct or block a first flow of the non-condensable gases from the first emission canister to an ambient environment, the second vent valve is configured to direct or block a second flow of the non-condensable gases from the second emission canister to the ambient environment, the third vent valve is configured to direct or block a third flow of the non-condensable gases from the third emission canister to the ambient environment, and the fourth vent valve is configured to direct or block a fourth flow of the non-condensable gases from the fourth emission canister to the ambient environment.

12. The purge system of claim 8 , wherein each of the first emission canister, the second emission canister, the third emission canister, and the fourth emission canister is configured to sequentially operate in a respective saturation cycle, a respective regeneration cycle, a respective cooldown cycle, and a respective standby cycle.

13. The purge system of claim 8 , wherein the first emission canister, the second emission canister, the third emission canister, and the fourth emission canister are fluidly coupled to a first outlet valve, a second outlet valve, a third outlet valve, and a fourth outlet valve, respectively, wherein the first outlet valve, the second outlet valve, the third outlet valve, and the fourth outlet valve are configured to cooperate to direct a flow of the refrigerant from only the second emission canister to the vapor compression system during the regeneration cycle of the second emission canister, from only the third emission canister to the vapor compression system during a corresponding regeneration cycle of the third emission canister, from only the fourth emission canister to the vapor compression system during a corresponding regeneration cycle of the fourth emission canister, and from only the first emission canister to the vapor compression system during the corresponding regeneration cycle of the first emission canister.

14. The purge system of claim 8 , further comprising:
a first amount of adsorbent material disposed

Assignees

• Johnson Controls Tech Co
• Johnson Controls Tyco IP Holdings LLP

Inventors

• Monteith Maccrae William

Classifications

• B01D53/04 Primary

  with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title

• B01D53/0415 Primary

  Beds in cartridges · CPC title

• B01D53/0446

  Means for feeding or distributing gases · CPC title

• B01D53/0454

  Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047) · CPC title

• B01D53/261

  by adsorption · CPC title