Two-stage filtration and four-stage filtration air conditioning system for agricultural machinery cab and tractor

Abstract

The utility model relates to a two-stage filtration and four-stage filtration air-conditioning system for an agricultural machinery cab and a tractor. The air conditioning system comprises a cab top cover, an evaporator assembly and a condenser assembly, an evaporator chamber is arranged on the front side in the cab top cover, a condenser chamber is arranged on the rear side in the cab top cover, the evaporator assembly is arranged in the evaporator chamber, and a second-stage filtering air inlet and a fourth-stage filtering air inlet are formed in the left side and the right side of the front side of the cab top cover. An air inlet channel connected with an air inlet of the evaporator assembly is arranged in the evaporator chamber and connected with a second-stage filtering air inlet and a fourth-stage filtering air inlet, an air door actuator is arranged at the connecting position of the two filtering air inlets, an air outlet is formed in the top wall of the condenser chamber in a penetrating mode, and air supply outlets are formed in the left side and the right side of the rear side of the cab top cover. The bottom wall of the cab top cover is provided with an air outlet and an internal circulation inlet. The device has the advantages that the use requirements of personnel in a cab can be better and more quickly met, the maintenance convenience and the service life are considered in the process, and the personnel can select a fourth-level mode and a second-level mode according to different environments.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery equipment, in particular to a two-stage filtering and four-stage filtering air conditioning system for an agricultural machinery cab and a tractor. Background Art

[0002] Orchard tractors are mainly used for mowing, spraying, weeding, fertilizing, pruning, deep loosening, piling, and planting seedlings in the field. With the renewal of vineyards, apple orchards, and the dual promotion of policies and demand, the demand for orchard tractors will continue to increase. As the main agricultural power machinery in my country, the number of tractors has increased year by year. However, the environmental pollution problems caused by traditional tractors and the pollution problems such as pesticides, dust, aerosols and steam seriously affect the comfort and health of personnel. As a new type of agricultural filtration system, the orchard tractor filtration system can ensure a comfortable and healthy environment inside the cab.

[0003] In view of this situation, a new air-conditioning system controlled by a two-stage filtration and a four-stage filtration system is needed, and the condenser is placed on the top rear of the cab to meet the health and comfort requirements of the passengers in the cab. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a two-stage filtering and four-stage filtering air conditioning system for an agricultural machinery cab and a tractor, which effectively overcomes the defects of the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A two-stage filtration and four-stage filtration air conditioning system for an agricultural machinery cab comprises a cab roof, an evaporator assembly and a condenser assembly, wherein an evaporator chamber is provided on the front side of the interior of the cab roof, and a condenser chamber is provided on the rear side, the evaporator assembly is installed in the evaporator chamber, a two-stage filtration air inlet and a four-stage filtration air inlet are respectively provided on the left and right sides of the front side of the cab roof, which are connected to the evaporator chamber and the outside, a two-stage filtration filter element and a four-stage filtration filter element are respectively provided in the two-stage filtration air inlet and the four-stage filtration air inlet, an air inlet duct connected to the air inlet of the evaporator assembly is provided in the evaporator chamber, the air inlet duct is respectively connected to the two-stage filtration air inlet and the four-stage filtration air inlet, and damper actuators are respectively provided at the two connecting parts, an exhaust outlet is penetrated through the top wall of the condenser chamber, an air supply outlet connected to the outside of the condenser chamber is respectively provided on the left and right sides of the rear side of the cab roof, and an air outlet and an internal circulation inlet connected to the evaporator chamber are provided on the bottom wall of the cab roof.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, there are four air outlets, which are respectively distributed on the front side of the bottom wall of the cab roof near the front window, the left and right sides of the bottom wall corresponding to the windows, and the bottom wall corresponding to the driver.

[0009] Furthermore, the top wall of the evaporator chamber is provided with an inspection opening with a cover plate.

[0010] Furthermore, the top wall of the condenser chamber is provided with a flap which can be flipped up and down to open or close, the condenser assembly is mounted on the lower end of the flap, and the exhaust port is provided on the flap.

[0011] Furthermore, the condenser assembly includes a condenser core and a condensing fan. The condensing fan is installed at the upper end of the condenser core, and its air supply direction is from bottom to top.

[0012] Furthermore, the cab roof is provided with an air pressure sensor.

[0013] Furthermore, the cab roof is a plastic cover or a sheet metal cover.

[0014] Furthermore, the bottom wall of the cab roof is provided with a controller connected to the damper actuator.

[0015] Furthermore, the bottom wall of the cab roof is provided with an interior decoration layer.

[0016] The beneficial effects of the utility model are: reasonable structural design, which can better and faster meet the use needs of personnel in the cab, taking maintenance convenience and service life into consideration during the process, and personnel can choose between the fourth and second level modes according to different environments.

[0017] A tractor is also provided, comprising a two-stage filtering and a four-stage filtering air conditioning system for an agricultural machinery cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the two-stage filtration and four-stage filtration air conditioning system for the cab of agricultural machinery of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system from another perspective of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the two-stage filtration and four-stage filtration air-conditioning system for the cab of agricultural machinery of the utility model from an upward perspective.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Cab roof; 2. Evaporator assembly; 3. Condenser assembly; 31. Condenser core; 32. Condensing fan. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] Example 1

[0025] like Figure 1 , 2 As shown in Figure 3, the agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system of this embodiment includes a cab roof 1, an evaporator assembly 2 and a condenser assembly 3. The front side of the cab roof 1 is provided with an evaporator chamber, and the rear side is provided with a condenser chamber. The evaporator assembly 2 is installed in the evaporator chamber. The left and right sides of the front side of the cab roof 1 are respectively provided with a two-stage filtration air inlet (indicated by a in the figure) and a four-stage filtration air inlet (indicated by b in the figure) connecting the evaporator chamber and the outside. The two-stage filtration air inlet and the four-stage filtration air inlet are respectively provided with a two-stage filtration air inlet. A filter element and a four-stage filter element, the evaporator chamber is provided with an air inlet duct connected to the air inlet of the evaporator assembly 2, the air inlet duct is respectively connected to the two-stage filter air inlet and the four-stage filter air inlet, and two connecting parts are respectively provided with damper actuators, an exhaust outlet is penetrated through the top wall of the condenser chamber, and air supply outlets connected to the outside of the condenser chamber are respectively provided on the left and right sides of the rear side of the cab roof 1, and the bottom wall of the cab roof 1 is provided with an outlet (denoted by f in the figure) connected to the evaporator chamber and an internal circulation inlet (denoted by c in the figure).

[0026] In this embodiment, the above-mentioned air outlets are provided with four, which are respectively distributed on the front side of the bottom wall of the above-mentioned cab roof 1 near the front window, the left and right sides of the bottom wall corresponding to the windows, and the bottom wall corresponding to the driver. The entire agricultural machinery cab secondary filtration and four-stage filtration air conditioning system adopts front top placement (the evaporator assembly 2 is arranged in the evaporator chamber on the front side of the cab roof 1), and the air outlet is arranged in the front and both sides of the cab roof 1, which can not only blow people, but also realize the defrosting and defogging of the front glass and the left and right side glasses. The condenser assembly 3 adopts rear top placement to better dissipate the heat of the condenser. Through the adjustment of the two damper actuators, the driver can choose to switch between the dual modes of secondary filtration or four-stage filtration according to different environments. The overall structural design is reasonable, which can better and faster meet the use needs of people in the cab.

[0027] Among them, the secondary filter element and the fourth-stage filter element are placed on the left and right sides of the cab roof 1, with a large air inlet area and convenient maintenance and cleaning for personnel; the evaporator is placed on the top in front, and the short air duct can better and faster meet the cooling and heating needs of the cab.

[0028] In this embodiment, the top wall of the evaporator chamber is provided with an inspection port with a cover plate, which facilitates daily maintenance of the evaporator assembly 2 inside the evaporator.

[0029] In this embodiment, the evaporator assembly 2 can adopt the existing evaporator assembly products suitable for tractors on the market, which mainly include components such as an evaporator core and an evaporator fan, which are existing products and the specific structure will not be described in detail here.

[0030] In this embodiment, the damper actuator is a prior art product, and its specific structure will not be described in detail here.

[0031] As a preferred embodiment, the top wall of the condenser chamber is provided with a flap (indicated by g in the figure) which can be flipped up and down to open or close, the condenser assembly 3 is installed at the lower end of the flap, and the exhaust port is provided on the flap.

[0032] In the above-mentioned embodiment, the cover can be opened manually by flipping it over, which is beneficial for daily inspection and maintenance of the condenser assembly 3 at the top.

[0033] It should be noted that: in this embodiment, the medium outlet of the condenser assembly is connected to the medium inlet of the evaporator assembly through a pipeline, and the cold medium entering the evaporator assembly absorbs heat and vaporizes by heat exchange with the filtered gas entering the evaporator chamber. The vaporized medium enters the compressor of the tractor through a pipeline, and the gas after heat exchange is sent into the cab through the air outlet. The high-pressure gas compressed by the compressor enters the condenser assembly, and after heat exchange with the air entering the condenser chamber, the heat is discharged from the exhaust port on the top along with the gas. The cooled medium is sent to the dry turbine connected to the pipeline, and then sent to the medium inlet of the evaporator assembly through the pipeline.

[0034] As a preferred embodiment, the condenser assembly 3 includes a condenser core 31 and a condensation fan 32. The condensation fan 32 is installed at the upper end of the condenser core 31, and its air supply direction is from bottom to top.

[0035] In the above embodiment, the condenser core 31 and the condensing fan 32 are rear-mounted, and the wind blows from bottom to top, which has better heat dissipation and is not easy to get dirty and blocked. During the exhaust process, it can also blow away weeds or light debris that may have fallen and accumulated on the top of the cab.

[0036] In this embodiment, the cab roof 1 is provided with an air pressure sensor. The cab adopts a positive pressure cab to prevent the external harsh environment from entering the cab. Specifically, the air pressure inside the cab is monitored in real time by the air pressure sensor, and fed back to the controller (which can be the cab control system), and compared with the external atmospheric pressure, or the pressure difference between the pressure inside the cab and the external air pressure is obtained through a simple calculation, and then the pressure difference is compared with the set value. If it is lower than the set value, the power of the evaporator fan in the evaporator assembly 2 is controlled to increase, and a large amount of air is supplied to increase the air pressure in the cab, so that the air pressure is always maintained at the set value (positive pressure), and the operating parameters of the evaporator assembly 2 are controlled to achieve positive pressure in the cab, meet the health and comfort requirements of the people in the cab, and ensure that the interior of the cab is neat and clean.

[0037] In this embodiment, the cab roof 1 is a plastic cover or a sheet metal cover.

[0038] In this embodiment, a controller connected to the damper actuator is disposed on the bottom wall of the cab roof 1. The controller may be a common mechanical knob or an electronic button.

[0039] In this embodiment, the bottom wall of the cab roof 1 is provided with an interior decoration layer.

[0040] Example 2

[0041] The tractor of this embodiment includes the agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system in Embodiment 1.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A two-stage filtration and four-stage filtration air conditioning system for an agricultural machinery cab, characterized in that: The invention comprises a cab top cover (1), an evaporator assembly (2) and a condenser assembly (3), wherein the front side of the cab top cover (1) is provided with an evaporator chamber, and the rear side is provided with a condenser chamber, the evaporator assembly (2) is installed in the evaporator chamber, and the left and right sides of the front side of the cab top cover (1) are respectively provided with a secondary filter air inlet and a fourth filter air inlet which are connected to the evaporator chamber and the outside, and the secondary filter air inlet and the fourth filter air inlet are respectively provided with a secondary filter element and a fourth filter element, The evaporator chamber is provided with an air inlet duct connected to the air inlet of the evaporator assembly (2), the air inlet duct is respectively connected to the secondary filter air inlet and the fourth filter air inlet, and damper actuators are respectively provided at the two connection positions, the top wall of the condenser chamber is provided with an exhaust port, the left and right sides of the rear side of the cab top cover (1) are respectively provided with air supply ports connected to the outside of the condenser chamber, and the bottom wall of the cab top cover (1) is provided with an air outlet connected to the evaporator chamber and an internal circulation inlet.

2. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: There are four air outlets, which are respectively distributed at a position on the front side of the bottom wall of the cab roof (1) close to the front window, positions on the left and right sides of the bottom wall corresponding to the windows, and a position on the bottom wall corresponding to the driver.

3. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: The top wall of the evaporator chamber is provided with an inspection opening with a cover plate.

4. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: The top wall of the condenser chamber is provided with a flap which can be flipped up and down to open or close, the condenser assembly (3) is mounted on the lower end of the flap, and the exhaust port is provided on the flap.

5. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 4, characterized in that: The condenser assembly (3) comprises a condenser core (31) and a condensing fan (32); the condensing fan (32) is installed at the upper end of the condenser core (31), and its air supply direction is from bottom to top.

6. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 5, characterized in that: The cab roof (1) is provided with an air pressure sensor.

7. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: The cab roof (1) is a plastic cover or a sheet metal cover.

8. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: The bottom wall of the cab roof (1) is provided with a controller connected to the damper actuator.

9. The agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system according to claim 1, characterized in that: The bottom wall of the cab roof (1) is provided with an interior decoration layer.

10. A tractor, characterized in that: It comprises the agricultural machinery cab two-stage filtration and four-stage filtration air conditioning system as described in any one of claims 1 to 9.

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