CN-224210873-U - External circulation air conditioner air duct and tractor

Abstract

The utility model relates to the technical field of agricultural machinery equipment, in particular to an external circulation air conditioner air duct and a tractor. The external circulation air conditioner air duct comprises an air inlet pipeline, a fresh air filter element, a fresh air duct, a fresh air cavity, an air blower and an internal circulation air duct, wherein an air inlet of the air inlet pipeline is arranged at the top of the cab, the fresh air filter element is arranged at the bottom of the cab, the air inlet pipeline is communicated with the air inlet end of the fresh air filter element through a front upright post of the cab, the air outlet end of the fresh air filter element is communicated with the air inlet end of the fresh air duct, the air outlet end of the fresh air duct is communicated with the fresh air cavity, the fresh air cavity is communicated with the internal circulation air duct, and the air blower is arranged in the fresh air cavity. The utility model can continuously introduce external fresh air and filter impurities, effectively improve the air quality in the cab, maintain the positive pressure environment of the cab, prevent external pollutants from entering, uniformly supply air, avoid local temperature difference, promote the overall comfort, facilitate replacement and maintenance, reduce the maintenance cost and enhance the stability and adaptability of the system.

Inventors

• WANG HAIMING
• Mou Junhao
• ZHAO XUETAO
• TAN YUE
• LIU MUHUA

Assignees

• 潍柴雷沃智慧农业科技股份有限公司

Dates

Publication Date

20260508

Application Date

20250513

Claims (10)

1. 1. An external circulation air conditioner air duct is used for communicating the inside and the outside of a cab and is characterized by comprising an air inlet pipeline, a fresh air filter element, a fresh air duct, a fresh air cavity, a blower and an internal circulation air duct; The air inlet of the air inlet pipeline is positioned at the top of the cab, the fresh air filter element is positioned at the bottom of the cab, and the air inlet pipeline is communicated with the air inlet end of the fresh air filter element through the front upright post of the cab; The air outlet end of the fresh air filter element is communicated with the air inlet end of the fresh air duct, and the air outlet end of the fresh air duct is communicated with the fresh air cavity; The fresh air cavity is communicated with the internal circulation air duct; The air blower is arranged in the fresh air cavity and is used for blowing fresh air outside the cab to the internal circulation air duct.
2. 2. The external circulation air conditioning duct of claim 1, wherein the fresh air duct comprises a plurality of duct modules; And the air duct modules are mutually spliced.
3. 3. The external circulation air conditioner duct of claim 2, wherein the duct module is spliced in at least one of a snap fit, a transition fit, an interference fit, or a bolted connection.
4. 4. The external circulation air conditioner duct of claim 2, wherein the duct modules are sealingly connected.
5. 5. The external circulation air conditioner duct according to claim 4, wherein the duct modules are sealed by sealing cotton.
6. 6. The external circulation air conditioner duct according to claim 1, wherein the fresh air duct is provided with a concave structure.
7. 7. The external circulation air conditioner duct of claim 1, wherein the fresh air duct is plastic.
8. 8. The external circulation air conditioner duct according to claim 1, wherein a baffle is provided inside the fresh air duct.
9. 9. The external circulation air conditioner duct according to claim 1, wherein the air inlet of the air inlet pipe is provided with a filter screen.
10. 10. A tractor comprising the external circulation air conditioning duct of any of claims 1-9.

Description

External circulation air conditioner air duct and tractor Technical Field The utility model relates to the technical field of agricultural machinery equipment, in particular to an external circulation air conditioner air duct and a tractor. Background In the existing tractor cab, the air conditioning system mostly adopts an internal circulation mode, and the design has a plurality of problems. For example, the cab has poor tightness, is easy to fog in rainy days to influence the riding comfort, has small fresh air quantity, cannot effectively maintain the positive pressure environment in the cab, has no independent air duct, lacks a static sedimentation function, is easy to block, and is inconvenient to maintain. These problems seriously affect the air quality in the cab and the comfort of the driver. Disclosure of utility model The utility model aims to provide an external circulation air conditioner air duct and a tractor, which are used for communicating the inside and the outside of a cab, can effectively improve the air quality in the cab, improve the riding comfort and reduce the maintenance cost. In a first aspect, the utility model provides an external circulation air conditioner air duct, which is used for communicating the inside and the outside of a cab and comprises an air inlet pipeline, a fresh air filter element, a fresh air duct, a fresh air cavity, a blower and an internal circulation air duct; The air inlet of the air inlet pipeline is positioned at the top of the cab, the fresh air filter element is positioned at the bottom of the cab, and the air inlet pipeline is communicated with the air inlet end of the fresh air filter element through the front upright post of the cab; The air outlet end of the fresh air filter element is communicated with the air inlet end of the fresh air duct, and the air outlet end of the fresh air duct is communicated with the fresh air cavity; The fresh air cavity is communicated with the internal circulation air duct; The air blower is arranged in the fresh air cavity and is used for blowing fresh air outside the cab to the internal circulation air duct. In an alternative embodiment, the fresh air duct comprises a plurality of duct modules; And the air duct modules are mutually spliced. In an alternative embodiment, the splicing mode of the air duct module is at least one of clamping, transition fit, interference fit or bolting. In an alternative embodiment, the air duct modules are connected in a sealing manner. In an alternative embodiment, the air duct modules are sealed by sealing cotton. In an alternative embodiment, the fresh air duct is provided with a concave structure. In an alternative embodiment, the fresh air duct is made of plastic. In an alternative embodiment, a deflector is arranged inside the fresh air duct. In an alternative embodiment, the air inlet of the air inlet pipeline is provided with a filter screen. In a second aspect, the present utility model provides a tractor comprising an external circulation air conditioning duct as described in any of the preceding embodiments. The embodiment of the utility model has the beneficial effects that: The fresh air filter has the advantages that external fresh air can be continuously introduced and impurities can be filtered through the independent air inlet pipeline and the fresh air duct, the air quality in the cab is effectively improved, the blower is independently arranged in the fresh air cavity, the positive pressure environment of the cab is maintained, external pollutants are prevented from entering, meanwhile, air is uniformly supplied, the local temperature difference is avoided, the overall comfort is improved, the fresh air filter element is arranged at the bottom of the cab, replacement and maintenance are facilitated, the maintenance cost is reduced, and the stability and the adaptability of the system are enhanced. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a front view of an external circulation air conditioner duct provided by an embodiment of the present utility model; fig. 2 is a schematic perspective view of an air duct of an external circulation air conditioner according to an embodiment of the present utility model. The icons are a 1-fresh air cavity, a 2-fresh air channel, a 3-fresh air filter element, a 4-front upright post, a 5-air inlet, a 6-blower, a 7-internal circulation channel and an 8-cab top cover. Detailed Description For the purpose of making the objects, technical solutions and advantages of the embodime