Heating, ventilation, and air conditioning system of a work vehicle

• US 10,543,733 B2
• Filed: 11/14/2016
• Issued: 01/28/2020
• Est. Priority Date: 11/14/2016
• Status: Active Grant

• Current Assignee: Blue Leaf IP Incorporated (CNH Industrial N.V.)
• Original Assignee: CNH Industrial America LLC (CNH Industrial N.V.)
• Inventors: Eckelberg, Mark Allen, Chemyavsky, Leonid, Jangula, Thomas Allen
• Primary Examiner(s): Zec, Filip
• Application Number:
  US15/350,696
• Publication Number:
  US 20180134114A1
• Time in Patent Office: 1,170 Days
• CPC Class Codes: B60H 1/00378 for tractor or load vehicle cabins
• CPC Class Codes: B60H 1/00521 Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators
• CPC Class Codes: B60H 1/00535 Mounting or fastening of the housing to the vehicle
• CPC Class Codes: B60H 1/3233 characterised by condensed liquid drainage means
• CPC Class Codes: B60H 2001/00221 Devices in the floor or side wall area of the passenger compartment

Abstract

A heating, ventilation, and air condition (HVAC) system of a work vehicle includes a housing configured to mount to a structure of a cab of the work vehicle. The housing includes at least one mounting assembly configured to support at least one heat exchanger within the housing, and the at least one mounting assembly is configured to position the at least one heat exchanger such that the at least one heat exchanger extends through the structure from an interior of the cab to an exterior of the cab while the at least one heat exchanger is coupled to the at least one mounting assembly.

Claims

1. A heating, ventilation, and air conditioning (HVAC) system configured to control an air temperature in an interior of a cab of a work vehicle, comprising:

a housing configured to mount to a structure of the cab of the work vehicle, wherein the housing comprises;

a first portion configured to mount to the structure of the cab such that at least some of the first portion is positioned in the interior of the cab;

a second portion configured to mount to the first portion such that the second portion is positioned on an exterior of the cab, wherein the first portion and the second portion define an interior space of the housing while the second portion is mounted to the first portion;

at least one mounting assembly configured to support at least one heat exchanger within the interior space of the housing, wherein the at least one mounting assembly comprises at least one fastener configured to mount the at least one heat exchanger to the first portion of the housing such that the at least one heat exchanger extends through the structure from the interior of the cab to the exterior of the cab while the at least one heat exchanger is coupled to the at least one mounting assembly.

2. The HVAC system of claim 1, comprising the at least one heat exchanger, wherein the at least one heat exchanger comprises an evaporator, a heater core, or a combination thereof.

3. The HVAC system of claim 1, comprising the at least one heat exchanger, wherein the at least one heat exchanger comprises an evaporator and a heater core, the at least one mounting assembly comprises a first mounting assembly comprising a first fastener of the at least one fastener and a second mounting assembly comprising a second fastener of the at least one fastener, the evaporator is mounted to the first portion via the first fastener, and the heater core is coupled to the first portion via the second fastener.

4. The HVAC system of claim 1, wherein the first portion of the housing is configured to be disposed within an opening in the structure of the cab, and the at least one mounting assembly is configured to orient the at least one heat exchanger substantially perpendicular to a plane of the opening.

5. The HVAC system of claim 1, wherein the housing is configured to enable the at least one heat exchanger to be selectively removed from the housing via translation toward the exterior of the cab while the second portion of the housing is separated from the first portion of the housing.

6. The HVAC system of claim 1, comprising the at least one heat exchanger and a bleed valve, wherein the at least one heat exchanger comprises a heater core, the bleed valve is fluidly coupled to the heater core, and the bleed valve is configured to selectively facilitate degassing of air from the heater core.

7. The HVAC system of claim 1, comprising the at least one heat exchanger and a tank assembly, wherein the at least one heat exchanger comprises an evaporator, the tank assembly comprises a tank configured to receive and to support the evaporator, and the at least one mounting assembly is configured to support the tank assembly within the housing.

8. The HVAC system of claim 7, wherein the tank assembly comprises a drain configured to direct water out of the tank, and the drain is positioned on the exterior of the cab while the tank assembly is coupled to the at least one mounting assembly.

9. The HVAC system of claim 8, wherein the drain is the only drain on the tank assembly.

10. The HVAC system of claim 1, comprising the structure, wherein the structure defines an opening, the first portion is mounted within the opening such that at least some of the first portion is positioned on a first side of the opening, the second portion is mounted to the first portion such that the second portion is positioned on a second side of the opening.

14. The HVAC system of claim 1, comprising the structure, wherein the structure and the housing are configured to be positioned on a lateral side of the cab relative to a direction of travel of the work vehicle.

15. The HVAC system of claim 2, comprising a blower assembly that is configured to receive ambient air from an environment via a filter assembly and to receive recirculation air from the cab via a recirculation opening, and the blower assembly outputs a combined airflow that comprises the ambient air and the circulation air to the at least one heat exchanger.

16. The HVAC system of claim 6, comprising a conduit extending from the bleed valve to the heater core to fluidly couple the bleed valve to the heater core, wherein the conduit extends through an opening in the second portion of the housing to enable the bleed valve to be positioned outside of the housing and on the exterior of the cab.

17. The HVAC system of claim 16, wherein the conduit comprises a hose, and the bleed valve comprises a clamp configured to selectively crimp the hose to block fluid flow from the hose.

18. The HVAC system of claim 1, wherein the at least one mounting assembly comprises an angled surface that is configured to contact an angled portion of a tank assembly that is coupled to the at least one heat exchanger.

19. The HVAC system of claim 1, wherein the at least one heat exchanger is accessible from the exterior of the cab while the first portion is mounted to the structure of the cab, the at least one heat exchanger is mounted to the first portion of the housing, and the second portion is separated from the first portion.

11. The HVAC system of 10, comprising the at least one heat exchanger mounted to the first portion via the at least one mounting assembly, wherein the at least one heat exchanger is positioned within the interior space and extends through the opening from the first side of the opening to the second side of the opening.

12. The HVAC system of claim 11, wherein the at least one heat exchanger comprises an evaporator and a heater core.

13. The HVAC system of claim 12, comprising a blower assembly mounted to the first portion via at least one respective fastener, wherein the at least blower assembly is positioned within the interior space and extends through the opening from the first side of the opening to the second side of the opening.