ROOF STRUCTURE AND CAB

• US 20190322322A1
• 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: Jha, Pankaj Kumar, Gardner, Jeffrey, Dietrich, Gunnar, Trhlik, Jiri
• Granted Patent: US 11,590,824 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, a lower roof assembly, and an air-conditioning chamber formed in the lower roof assembly. The upper roof assembly is connectable to the lower roof assembly to surround the air-conditioning chamber. An inlet chamber and an outlet chamber for air-conditioned air are provided such that the inlet chamber and the outlet chamber between the lower roof assembly and the upper roof assembly include chambers separated from each other. The structure also includes a circulation opening for supplying recirculated air arranged at the inlet chamber and an air-guiding element arranged in the inlet chamber, at the circulation opening, and at the air-conditioning chamber. A region is sealed in relation to an external environment.

Claims

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

an upper roof assembly;

a lower roof assembly;

an air-conditioning chamber formed in the lower roof assembly, the upper roof assembly being connectable to the lower roof assembly to surround the air-conditioning chamber;

an inlet chamber and an outlet chamber for air-conditioned air, wherein the inlet chamber and the outlet chamber between the lower roof assembly and the upper roof assembly comprise chambers separated from each other;

a circulation opening for supplying recirculated air arranged at the inlet chamber;

an air-guiding element arranged in the inlet chamber, at the circulation opening, and at the air-conditioning chamber, wherein a region is sealed in relation to an external environment.

2. The roof structure of claim 1, further comprising a fresh air opening for supplying fresh air formed at the inlet chamber or the air-conditioning chamber.

3. The roof structure of claim 2, wherein the air-guiding element is arranged at the fresh air opening, the circulation opening, and the air-conditioning chamber so that a region is sealed in relation to the external environment.

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

a fresh air inlet for supplying fresh air;

a circulation inlet for supplying recirculated air; and

an air outlet for letting out mixed air.

5. The roof structure of claim 4, wherein the fresh air opening is connected to the fresh air inlet and the circulation opening is connected to the circulation inlet.

6. The roof structure of claim 5, wherein the air outlet is arranged at the air-conditioning chamber such that the fresh air and the recirculated air are mixable in the air-guiding element, and are guided in the sealed region from the fresh air opening and the circulation opening to the air outlet.

7. The roof structure of claim 1, further comprising a filter arrangement located at the fresh air opening or the fresh air inlet.

8. The roof structure of claim 7, wherein the filter arrangement comprises a first filter element.

9. The roof structure of claim 7, further comprising a second filter element removably arranged at the circulation opening or the circulation inlet.

10. The roof structure of claim 7, wherein the filter arrangement and the air-guiding element or the filter arrangement and the roof structure are connected by a coupling element.

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

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

13. The roof structure of claim 12, further comprising an air-conditioning-system assembly arranged in the air-conditioning chamber or at the outlet chamber.

14. The roof structure of claim 13, wherein the second fan comprises a fan inlet and a fan outlet, wherein the fan inlet is configured to suction air from the air-conditioning chamber or the fan outlet discharges air into the outlet chamber.

15. The roof structure of claim 13, wherein the air outlet is arranged at the air-conditioning-system assembly.

16. A cab for an agricultural vehicle, comprising:

a side wall;

a roof structure coupled to the side wall, the roof structure comprising;

an upper roof assembly;

a lower roof assembly;

an air-conditioning chamber formed in the lower roof assembly, the upper roof assembly being connectable to the lower roof assembly to surround the air-conditioning chamber;

an inlet chamber and an outlet chamber for air-conditioned air, wherein the inlet chamber and the outlet chamber between the lower roof assembly and the upper roof assembly comprise chambers separated from each other;

a circulation opening for supplying recirculated air arranged at the inlet chamber;

an air-guiding element arranged in the inlet chamber, at the circulation opening, and at the air-conditioning chamber, wherein a region is sealed in relation to an external environment; and

a fresh air opening for supplying fresh air formed at the inlet chamber or the air-conditioning chamber.

17. The cab of claim 16, further comprising a filter arrangement located at the fresh air opening or the fresh air inlet.

18. The cab of claim 16, further comprising a second fan arranged in the air-conditioning chamber or the outlet chamber.

19. The cab of claim 16, further comprising an air-conditioning-system assembly arranged in the air-conditioning chamber or at the outlet chamber.

20. A roof structure of an agricultural vehicle, comprising:

an upper roof assembly;

a lower roof assembly;

an air-conditioning chamber formed in the lower roof assembly, the upper roof assembly being connectable to the lower roof assembly to surround the air-conditioning chamber;

an inlet chamber and an outlet chamber for air-conditioned air, wherein the inlet chamber and the outlet chamber between the lower roof assembly and the upper roof assembly comprise chambers separated from each other;

a circulation opening for supplying recirculated air arranged at the inlet chamber;

an air-guiding element arranged in the inlet chamber, at the circulation opening, and at the air-conditioning chamber, wherein a region is sealed in relation to an external environment;

a fresh air opening for supplying fresh air formed at the inlet chamber or the air-conditioning chamber; and

a filter arrangement located at the fresh air opening.