System and method of cooling of heat generating units in an HVAC unit

Patent metadata

Field	Value
Publication number	US-12085317-B2
Application number	US-202117235740-A
Country	US
Kind code	B2
Filing date	Apr 20, 2021
Priority date	Apr 20, 2020
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

Embodiments of the present disclosure are therefore directed toward a condenser section that is configured to draw an air flow into the condenser section, a control section configured to enclose electrical components, and a partition extending between the condenser section and the control section. The partition may include a first air passage and a second air passage formed therein, where the first air passage is configured to enable a portion of the air flow to flow from the condenser section into the control section to cool the electrical components and the second air passage enables the portion of air flow to from the control section to the condenser section.

First claim

The invention claimed is:

1. A heating, ventilation, and/or air conditioning (HVAC) unit, comprising:
a condenser section comprising a coil and a fan, wherein the fan is configured to draw an air flow into the condenser section;
a control section configured to enclose electrical components of the HVAC unit; and
a partition extending between the condenser section and the control section, wherein:
the partition comprises a first air passage and a second air passage formed therein,
the first air passage is configured to enable a portion of the air flow to flow from the condenser section into the control section,
the second air passage is configured to enable the portion of the air flow to flow from the control section to the condenser section,
the first air passage is lower than the second air passage relative to a vertical axis, and
the fan is configured to draw the portion of the air flow from the condenser section and through the control section and to draw a remaining portion of the air flow within the condenser section, separate from the portion of the air flow, across the coil.

2. The HVAC unit of claim 1 , wherein the fan is configured to draw the portion of the air flow from the condenser section and into the control section via the first air passage and from the control section into the condenser section via the second air passage.

3. The HVAC unit of claim 2 , wherein the coil is configured to circulate a refrigerant therethrough, and the fan is configured to discharge the portion of the air flow and the remaining portion of the air flow from the condenser section via an air flow outlet.

4. The HVAC unit of claim 1 , comprising a variable frequency drive (VFD) disposed within the control section.

5. The HVAC unit of claim 4 , comprising a mounting panel disposed within the control section, wherein the VFD is secured to the mounting panel.

6. The HVAC unit of claim 5 , wherein the control section comprises a first portion and a second portion, the mounting panel extends between the first portion and the second portion, and the VFD is secured to the mounting panel within the first portion.

7. The HVAC unit of claim 6 , wherein the mounting panel comprises an opening fluidly coupling the first portion and the second portion, and wherein the second air passage fluidly couples the second portion and the condenser section.

8. The HVAC unit of claim 7 , wherein the VFD is secured to the mounting panel beneath the opening relative to a direction of gravity.

9. The HVAC unit of claim 1 , comprising an ingress protected (IP) rated louver coupled to the partition, wherein the first air passage extends through the IP rated louver.

10. The HVAC unit of claim 1 , wherein the partition comprises a plurality of louvers formed therein, and the second air passage extends through the plurality of louvers.

11. A heating, ventilation, and/or air conditioning (HVAC) unit, comprising:
a first section comprising a heat exchanger and a fan, wherein the fan is configured to draw an air flow into the first section;
a second section adjacent to the first section and configured to enclose electrical components of the HVAC unit; and
a partition extending between the first section and the second section,
wherein the HVAC unit comprises an air flow path extending from the first section into the second section via a first opening formed in the partition, through the second section, and from the second section into the first section via a second opening formed in the partition, wherein the first opening is lower than the second opening relative to a vertical axis, and wherein the HVAC unit is configured to direct a portion of the air flow along the air flow path and to direct a remaining portion of the air flow within the first section, separate from the portion of the air flow, across the heat exchanger.

12. The HVAC unit of claim 11 , comprising a louver coupled to the partition adjacent to the first opening, wherein the air flow path extends through the louver.

13. The HVAC unit of claim 12 , wherein the louver is an ingress protected (IP) rated louver.

14. The HVAC unit of claim 11 , wherein the electrical components comprise a variable frequency drive (VFD), a transformer, or both.

15. The HVAC unit of claim 14 , comprising the VFD disposed within the second section, wherein the VFD is configured to regulate operation of the fan.

16. The HVAC unit of claim 11 , comprising a mounting panel disposed within the second section, wherein the second section comprises a compartment configured to enclose the electrical components on a first side of the mounting panel and comprises a cavity on a second side of the mounting panel.

17. The HVAC unit of claim 16 , wherein the air flow path extends from the first section into the compartment via the first opening, and the air flow path extends from the cavity into the first section via the second opening.

18. The HVAC unit of claim 17 , wherein a lower edge of the mounting panel is offset from a base of the second section to define a passageway from the compartment to the cavity, and wherein the mounting panel comprises an opening formed therein at an end of the mounting panel opposite the lower edge.

19. A heating, ventilation, and/or air conditioning (HVAC) unit, comprising:
a condenser section comprising a coil and a fan, wherein the fan is configured to draw an air flow into the condenser section;
a control section, comprising:
a mounting panel separating the control section into a first portion and a second portion, wherein the mounting panel comprises an opening fluidly coupling the first portion and the second portion; and
one or more electrical components configured to generate heat during operation, wherein the one or more electrical components are attached to the mounting panel and are disposed within the first portion of the control section; and

a partition extending between the condenser section and the control section, wherein the partition comprises a louver configured to direct a portion of the air flow within the condenser section into the first portion of the control section, and the partition comprises a plurality of slats formed therein and configured to direct the portion of the air flow from the second portion of the control section to the condenser section,
wherein the louver is lower than the plurality of slats relative to a vertical axis, and the fan is configured to draw the portion of the air flow from the condenser section and through the control section and to draw a remaining portion of the air flow within the condenser section, separate from the portion of the air flow, across the coil.

20. The HVAC unit of claim 19 , wherein the one or more electrical components comprise a variable frequency drive (VFD) configured to regulate operation of the fan, and the louver comprises an ingress protected (IP) rated louver.

Assignees

• Johnson Controls Tech Co
• Tyco Fire & Security Gmbh

Inventors

• Rokade Dnyaneshwar
• Gharate Suyog K
• Chothave Amit R
• Garg Karan

Classifications

• F24F1/48 Primary

  characterised by air airflow, e.g. inlet or outlet airflow · CPC title

• F24F1/24

  Cooling of electric components · CPC title

• Y02B30/70

  Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating · CPC title

• F24F1/22

  Arrangement or mounting thereof · CPC title

• F25B2600/0253

  with variable speed · CPC title