System and method for HVAC condensate management

Patent metadata

Field	Value
Publication number	US-9995495-B2
Application number	US-201615010569-A
Country	US
Kind code	B2
Filing date	Jan 29, 2016
Priority date	Dec 30, 2011
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A HVAC system includes a cabinet configured as a duct, a coil assembly disposed within the cabinet, and at least one barrier configured to substantially segregate a low pressure zone associated with a downstream side of a heat exchanger of the coil assembly from a high pressure zone, wherein a leakage path is provided between the high pressure zone and the low pressure zone.

First claim

What is claimed is:

1. An HVAC coil assembly, comprising:
a first slab coil and a second slab coil configured in a V-shaped coil arrangement, wherein the first slab coil and the second slab coil are configured to at least partially segregate a low pressure zone associated with a downstream side of the HVAC coil assembly from a high pressure zone;
a slab cap disposed over an upper end of each of the first slab coil and the second slab coil, each slab cap comprising at least one undulating disturber disposed near the upper end of each of the first slab coil and the second slab coil within the low pressure zone, wherein the undulating disturbers are configured locally to reduce a velocity of an airflow to reduce an amount of condensation being transported through reduced velocity regions; and
an air leakage path between the low pressure zone and the high pressure zone that is configured to allow airflow to transfer from the high pressure zone to the low pressure zone to reduce an amount of condensation leaking from the low pressure zone to the high pressure zone.

2. The HVAC coil assembly of claim 1 , wherein the slab cap entirely covers the upper end of each of the first slab coil and the second slab coil.

3. The HVAC coil assembly of claim 1 , wherein the disturber is associated with an inner facing side of each of the first slab coil and the second slab coil.

4. The HVAC coil assembly of claim 1 , wherein the disturber comprises a saw tooth profile.

5. The HVAC coil assembly of claim 1 , wherein the disturber is connected to the slab cap.

6. The HVAC coil assembly of claim 1 , wherein the HVAC coil assembly is disposed in a cabinet configured as a duct, and wherein the high pressure zone is located between the coil assembly and the cabinet.

7. The HVAC coil assembly of claim 1 , wherein the HVAC coil assembly is disposed in a cabinet configured as a duct, and wherein the high pressure zone is located between a front of the coil assembly and a front of the cabinet.

8. The HVAC coil assembly of claim 1 , wherein the HVAC coil assembly is disposed in a cabinet configured as a duct, and wherein the high pressure zone is located between a rear of the coil assembly and a rear of the cabinet.

9. The HVAC coil assembly of claim 1 , wherein the air leakage path is provided through a slot in a component configured to substantially segregate the low pressure zone from the high pressure zone.

10. The HVAC coil assembly of claim 9 , wherein the leakage path lies along a length of the slab caps that prevent the primary airflow from exiting an end of the first slab coil and the second slab coil.

11. The HVAC coil assembly of claim 10 , wherein the velocity of the airflow is locally reduced substantially adjacent to the leakage path.

12. A HVAC system, comprising:
a cabinet configured as a duct; and
a coil assembly comprising:
a first slab coil and a second slab coil configured in a V-shaped coil arrangement wherein the first slab coil and the second slab coil are configured to at least partially segregate a low pressure zone associated with a downstream side of the coil assembly from a high pressure zone;
a slab cap disposed over an upper end of each of the first slab coil and the second slab coil, each slab cap comprising at least one undulating disturber disposed near the upper end of each of the first slab coil and the second slab coil within the low pressure zone, wherein the undulating disturbers are configured locally to reduce a velocity of an airflow to reduce an amount of condensation being transported through reduced velocity regions; and
an air leakage path between the low pressure zone and the high pressure zone that is configured to allow airflow to transfer from the high pressure zone to the low pressure zone to reduce an amount of condensation leaking from the low pressure zone to the high pressure zone.

13. The HVAC system of claim 12 , wherein the slab cap entirely covers the upper end of each of the first slab coil and the second slab coil.

14. The HVAC system of claim 12 , wherein the disturber is associated with an inner facing side of each of the first slab coil and the second slab coil.

15. The HVAC system of claim 12 , wherein the high pressure zone is located between the coil assembly and the cabinet.

16. The HVAC system of claim 12 , wherein the high pressure zone is located between a front of the coil assembly and a front of the cabinet.

17. The HVAC system of claim 12 , wherein the high pressure zone is located between a rear of the coil assembly and a rear of the cabinet.

18. The HVAC system of claim 12 , wherein the air leakage path is provided through a slot in a component configured to substantially segregate the low pressure zone from the high pressure zone.

19. The HVAC system of claim 18 , wherein the leakage path lies along a length of the slab caps that prevent the primary airflow from exiting an end of the first slab coil and the second slab coil.

20. The HVAC system of claim 19 , wherein the velocity of the airflow is locally reduced substantially adjacent to the leakage path.

Assignees

• Trane Int Inc

Inventors

• Edens John Raymond
• Thrift Jonathan Edward
• Kersh Bradley Lynn

Classifications

• F28F13/06 Primary

  by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} · CPC title

• F24F13/22

  Means for preventing condensation or evacuating condensate · CPC title

• F24F13/222

  for evacuating condensate · CPC title

• F28F1/32

  the means having portions engaging further tubular elements · CPC title

• F28F17/005

  Means for draining condensates from heat exchangers, e.g. from evaporators (F28B9/08 takes precedence) · CPC title