ROOF STRUCTURE AND CAB

• US 20190322156A1
• Filed: 04/17/2019
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: Mukhopadhyay, Sourabh, Halder, Kaushik, Singh, Amar, Varma, Rajashekar, Jha, Pankaj Kumar, Chow, Augustine Y, Dietrich, Gunnar, Kumar, Anand K, Basak, Saurav, Jordan, Benjamin
• Granted Patent: US 11,660,931 B2
• Time in Patent Office: Days
• CPC Class Codes: B60H 1/00378 for tractor or load vehicle cabins
• CPC Class Codes: B60H 1/00564 of air ducts
• CPC Class Codes: B60H 1/245 located in the roof
• CPC Class Codes: B60H 2001/00085 of air intake
• CPC Class Codes: B60H 2001/00235 Devices in the roof area of the passenger compartment
• CPC Class Codes: B62D 33/0617 for tractors or off-the-road vehicles protective devices for drivers in case of overturning of tractors B60R21/131

Abstract

A roof structure for an agricultural vehicle includes an upper roof assembly and a lower roof assembly connectable to the upper roof assembly. The lower roof assembly or the upper roof assembly includes a ventilation opening for guiding air-conditioned air and a circulation opening for supplying recirculated air. An air-guiding element is arranged between the lower and upper roof assembly. The air-guiding element is further disposed at the circulation opening and the ventilation opening such that a region sealed in relation to an external environment is formed.

Claims

1. A roof structure for an agricultural vehicle, comprising:

an upper roof assembly;

a lower roof assembly connectable to the upper roof assembly, where the lower roof assembly or the upper roof assembly comprises a ventilation opening for guiding air-conditioned air and a circulation opening for supplying recirculated air;

an air-guiding element arranged between the lower and upper roof assembly, the air-guiding element further disposed at the circulation opening and the ventilation opening;

wherein a region sealed in relation to an external environment is formed.

2. The roof structure of claim 1, wherein the air-guiding element comprises:

an air-conditioning chamber;

an inlet chamber; and

an outlet chamber;

wherein, the air-conditioning chamber is arranged between the inlet chamber and the outlet chamber.

3. The roof structure of claim 2, wherein the inlet chamber and the outlet chamber are separated from one another.

4. The roof structure of claim 1, wherein the lower roof assembly or the upper roof assembly comprise a fresh air opening for supplying fresh air.

5. The roof structure of claim 4, wherein the air-guiding element is arranged between the lower and upper roof assembly, the air-guiding element further disposed at the fresh air opening, the circulation opening, and at the ventilation opening such that the air-guiding element comprises a region sealed in relation to an external environment.

6. The roof structure of claim 2, wherein:

the air-guiding element at the inlet chamber or the air-conditioning chamber comprises a fresh air inlet for supplying fresh air into the air-guiding element and a circulation inlet for supplying recirculated air into the air-guiding element; and

the outlet chamber comprises an air outlet for discharging air-conditioned mixed air from the air-guiding element.

7. The roof structure of claim 6, wherein the fresh air opening is connected to the fresh air inlet, the circulation opening is connected to the circulation inlet, and the air outlet is connected to the ventilation opening such that the fresh air and the recirculated air can be mixed in the air- guiding element and be guided in the air-guiding element from the fresh air opening and the circulation opening to the air outlet.

8. The roof structure of claim 1, further comprising a filter arrangement including a first filter element or a first fan, the filter arrangement being arranged at the fresh air opening or at the fresh air inlet.

9. The roof structure of claim 8, further comprising a second filter element removably arranged at the circulation opening or at the circulation inlet.

10. The roof structure of claim 8, wherein the filter arrangement and the air-guiding element or the roof structure are connected by means of a coupling element.

11. The roof structure of claim 1, wherein the air-guiding element is made from a plastic.

12. The roof structure of claim 1, wherein the air-guiding element comprises a cable duct.

13. The roof structure of claim 1, further comprising a first fan and a second fan, the second fan being arranged in the air-conditioning chamber or in the outlet chamber.

14. The roof structure of claim 13, further comprising an air-conditioning-system assembly arranged at the air-conditioning chamber or at the outlet chamber.

15. The roof structure of claim 13, wherein the second fan comprises a second fan inlet and a second fan outlet, wherein the second fan inlet suctions air from the air-conditioning chamber or the second fan outlet discharges air into the outlet chamber.

16. A cab for an agricultural vehicle, comprising:

a frame; and

a roof structure supported by the frame, the roof structure comprising;

an upper roof assembly;

a lower roof assembly connectable to the upper roof assembly, where the lower roof assembly or the upper roof assembly comprises a ventilation opening for guiding air- conditioned air and a circulation opening for supplying recirculated air;

an air-guiding element arranged between the lower and upper roof assembly, the air-guiding element further disposed at the circulation opening and the ventilation opening;

wherein a region sealed in relation to an external environment is formed.

17. The cab of claim 16, further comprising at least one side wall, the roof structure comprising a filter arrangement.

18. A roof structure for an agricultural vehicle, comprising:

an upper roof assembly;

a lower roof assembly connectable to the upper roof assembly, where the lower roof assembly or the upper roof assembly comprises a ventilation opening for guiding air-conditioned air and a circulation opening for supplying recirculated air;

an air-guiding element arranged between the lower and upper roof assembly, the air- guiding element further disposed at the circulation opening and the ventilation opening;

wherein a region sealed in relation to an external environment is formed.

further wherein the air-guiding element comprises an air-conditioning chamber, an inlet chamber, an outlet chamber, the air-conditioning chamber is arranged between the inlet chamber and the outlet chamber.

19. The roof structure of claim 18, further comprising a filter arrangement including a first filter element or a first fan, the filter arrangement being arranged at the fresh air opening or at the fresh air inlet.

20. The roof structure of claim 19, further comprising a second filter element removably arranged at the circulation opening or at the circulation inlet.