Evaporator for second-stage filtration and fourth-stage filtration of agricultural machinery cab and tractor

Abstract

The utility model relates to an evaporator for two-stage filtration and four-stage filtration of an agricultural machinery cab and a tractor. The evaporator comprises a shell, a refrigerating core and a heating core, a heat exchange cavity is defined in the shell, the refrigerating core and the heating core are installed in the heat exchange cavity, the heat exchange cavity is provided with a second-stage filtering air inlet, a fourth-stage filtering air inlet and an air outlet, an air blower and an evaporation fan are arranged in the shell, an inlet of the air blower is connected with the outside, and an outlet of the evaporation fan is connected with the air outlet. The evaporation fan is provided with two groups of inlets and outlets, the outlet of the air blower is respectively connected with the two groups of inlets of the evaporation fan through a second-stage filtering air duct and a fourth-stage filtering air duct, the two groups of outlets of the evaporation fan are respectively connected with a second-stage filtering air inlet and a fourth-stage filtering air inlet, and air door actuators are respectively arranged in the second-stage filtering air duct and the fourth-stage filtering air duct. The air blower has the advantages that the layout is reasonable and compact, the 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 independent air blower provides more sufficient flow during use.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery equipment, in particular to an evaporator for secondary and fourth-stage filtration in 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] To address this situation, it is necessary to design an air-conditioning system controlled by a two-stage filtration and a four-stage filtration system. 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 an evaporator for secondary and fourth-stage filtration in the cab of agricultural machinery 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] An evaporator for secondary and quaternary filtration in an agricultural machinery cab comprises a shell, a refrigeration core and a heating core, wherein the shell defines a heat exchange chamber, the refrigeration core and the heating core are respectively installed in the heat exchange chamber, the heat exchange chamber is provided with a secondary filtration air inlet, a quaternary filtration air inlet and an air outlet, the shell is provided with a blower and an evaporation fan, the inlet of the blower is connected to the outside, the evaporation fan has two groups of corresponding inlets and outlets, the outlet of the blower is connected to the two groups of inlets of the evaporation fan through a secondary filtration air duct and a quaternary filtration air duct respectively, the two groups of outlets of the evaporation fan are respectively connected to the secondary filtration air inlet and the quaternary filtration air inlet in a one-to-one correspondence, and damper actuators are respectively provided in the secondary filtration air duct and the quaternary filtration air duct.

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

[0008] Furthermore, the heat exchange chamber is provided at the left front portion of the shell, the first installation area is provided at the right front portion, the second installation area is provided at the left rear portion, and the third installation area is provided at the right rear portion. The blower is installed in the first installation area. The left and right sides of the rear side of the heat exchange chamber are respectively provided with the secondary filter air inlet and the fourth filter air inlet. The front side of the heat exchange chamber is provided with the air outlet. The evaporator fan is installed in the second installation area. The two inlets of the evaporator fan are spaced apart from each other on the left and right. The left inlet of the evaporator fan is connected to the secondary filter air duct, and the right inlet of the evaporator fan is connected to the fourth filter air duct.

[0009] Furthermore, the rear side of the second installation area defines the secondary filter air duct, and the third installation area defines the fourth filter air duct.

[0010] Furthermore, the pipe inlet and outlet of the heating core are respectively connected to warm water pipes, the warm water pipes pass through the first installation area, and the pipe inlet and outlet of the cooling core are respectively connected to refrigerant pipes.

[0011] Furthermore, the heating core is arranged at the front side of the cooling core, and both are arranged obliquely and distributed in a V shape.

[0012] Furthermore, the inclination angle of the heating core is 125°, and the inclination angle of the cooling core is 135°.

[0013] Furthermore, an air inlet chamber is defined between the refrigeration core and the rear side of the heat exchange chamber, and a guide plate is provided in the air inlet chamber. The guide plate is an arc plate, and a plurality of the guide plates are provided and coaxially distributed. The diameters of the plurality of guide plates are different, and the arc-shaped openings of the plurality of guide plates are all facing the rear side of the heat exchange chamber, with one end close to the refrigeration core and the other end close to the bottom wall of the heat exchange chamber.

[0014] Furthermore, an air guide plate is provided at an upper end of an upper surface of the heating core along a left-right direction, and the air guide plate extends toward a rear side of the heat exchange chamber.

[0015] Furthermore, the shell comprises an upper shell and a lower shell which are assembled and stacked up and down.

[0016] The beneficial effects of the utility model are: simple and reasonable structural design, reasonable and compact layout, which can better and faster meet the needs of personnel in the cab, taking into account the convenience of maintenance and service life in the process. At the same time, the separate blower provides more sufficient flow during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the evaporator for secondary filtration and quaternary filtration in the cab of agricultural machinery of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the evaporator for secondary filtration and quaternary filtration in the cab of agricultural machinery of the utility model;

[0019] Figure 3 It is a top view of the internal structure of the evaporator for secondary filtration and quaternary filtration in the cab of agricultural machinery of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the arrangement structure of the guide plate in the evaporator for secondary filtration and quaternary filtration in the cab of the agricultural machinery.

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

[0022] 1. Shell; 2. Refrigeration core; 3. Heating core; 4. Blower; 5. Evaporating fan; 6. Damper actuator; 7. Air guide plate; 11. Heat exchange chamber; 111. Air guide plate. 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 Figures 3 and 4, the evaporator for secondary and quaternary filtration in the cab of agricultural machinery in this embodiment comprises a shell 1, a refrigeration core 2 and a heating core 3. A heat exchange chamber 11 is defined in the shell 1. The refrigeration core 2 and the heating core 3 are respectively installed in the heat exchange chamber 11. The heat exchange chamber 11 is provided with a secondary filtration air inlet, a four-stage filtration air inlet and an air outlet (denoted by a in the figure). A blower 4 and two evaporation fans 5 are provided in the shell 1. The inlet of the blower 4 is connected to the outside. The evaporation fan 5 has two groups of corresponding inlets and outlets. The outlet of the blower 4 is connected to the two groups of inlets of the evaporation fan 5 through the secondary filtration air duct and the four-stage filtration air duct respectively. The two groups of outlets of the evaporation fan 5 are respectively connected to the secondary filtration air inlet and the four-stage filtration air inlet in one-to-one correspondence. The secondary filtration air duct and the four-stage filtration air duct are respectively provided with damper actuators 6.

[0026] In this embodiment, the evaporating fan 5 adopts a single-axis double-wheel fan commonly used in automobile air conditioners (a main shaft is provided with a fan casing at both ends, and fan blades connected to the main shaft are provided in the fan casing, and the two fan casings are provided with inlets at the ends away from each other).

[0027] In this embodiment, the shell 1 of the evaporator is made of plastic shell, which is light in weight, has moderate structural strength, and is easy to be installed on the ceiling. When the tractor cab is installed and used, the blower 4 sends the external air into the secondary filter air duct and the four-stage filter air duct as needed, enters the inlet of the evaporation fan 5 through the secondary filter air inlet and the four-stage filter air inlet, and is sent into the heat exchange chamber 11 to exchange heat with the refrigeration core 2 or the heating core 3, and finally blown into the cab through the air outlet, wherein the secondary filter element and the four-stage filter element can be respectively set at the secondary filter air inlet and the four-stage filter air inlet, and the switching of the secondary filter air supply and the four-stage filter air supply and the size of the air volume can be achieved by adjusting the working state of the evaporation fan 5 and adjusting the opening and closing degree of the damper actuator 6 in the secondary filter air duct and the four-stage filter air duct. The overall structural design is simple, the layout is reasonable and compact, and it can better and faster meet the needs of the personnel in the cab, and the maintenance convenience and service life are considered in the process. At the same time, the separate blower provides more sufficient flow when used.

[0028] In this embodiment, the heat exchange chamber 11 is provided at the left front part of the housing 1, the first installation area is provided at the right front part, the second installation area is provided at the left rear part, and the third installation area is provided at the right rear part. The blower 4 is installed in the first installation area. The left and right sides of the rear side of the heat exchange chamber 11 are respectively provided with the secondary filter air inlet (indicated by b in the figure) and the fourth filter air inlet (indicated by c in the figure). The front side of the heat exchange chamber 11 is provided with the air outlet. The two inlets of the evaporator fan 5 are spaced apart from each other. The left inlet of the evaporator fan 5 is connected to the secondary filter air duct, and the right inlet of the evaporator fan 5 is connected to the fourth filter air duct. The reasonable distribution of the functional components inside the housing 1 is achieved by dividing the four areas. Among them, the secondary filter air duct is defined at the rear side of the second installation area, and the fourth filter air duct is defined in the third installation area, so that the arrangement of the two filter air ducts in the housing 1 is also relatively reasonable.

[0029] In this embodiment, a one-way valve is provided at a position on the shell 1 corresponding to the third installation area, and the one-way valve can discharge harmful gases inside the shell 1.

[0030] In this embodiment, the pipe inlet and outlet of the heating core 3 are respectively connected to warm water pipes, which pass through the first installation area, and the pipe inlet and outlet of the cooling core 2 are respectively connected to refrigerant pipes.

[0031] As a preferred embodiment, the heating core 3 is arranged in front of the cooling core 2, and both are inclined and distributed in a V shape.

[0032] In the above implementation scheme, this installation method can effectively reduce the total height and is more conducive to exerting the performance of the heating core 3 and the cooling core 2. At the same time, during operation, the core water discharge is smoother.

[0033] Specifically, the inclination angle of the heating core 3 is 125°, and the inclination angle of the cooling core 2 is 135°.

[0034] As a preferred embodiment, an air inlet chamber is defined between the refrigeration core 2 and the rear side of the heat exchange chamber 11, and a guide plate 111 is provided in the air inlet chamber. The guide plate 111 is an arc plate, and a plurality of guide plates 111 are provided and coaxially distributed. The diameters of the plurality of guide plates 111 are different, and the arc-shaped openings of the plurality of guide plates 111 all face the rear side of the heat exchange chamber 11, with one end close to the refrigeration core 2, and the other end close to the bottom wall of the heat exchange chamber 11.

[0035] In the above embodiment, the filtered airflow entering the air inlet chamber through the secondary filter air inlet or the quaternary filter air inlet enters between the adjacent guide plates 111 through one end of the plurality of guide plates 111, and then is evenly dispersed through the guide plate 111 near the end of the refrigeration core 2, passes through the refrigeration core 2, and then passes through the heating core 3, and is sent out through the air outlet on the front side of the heat exchange chamber 11. Among them, when cooling is required, the refrigeration core 2 works, and when heating is required, the heating core 3 can be operated. This arrangement is relatively reasonable. After entering between the guide plates 111, the airflow will be evenly sent out through any part of one end of the guide plate 111, and one end of the guide plate 111 almost covers most of the area of ​​the refrigeration core 2 (one end of the guide plate 111 is almost perpendicular to one side of the refrigeration core 2), which can make the air distribution on the surface of the core even, better exert the performance of the core, and make the air outlet in the cab even.

[0036] In this embodiment, an air guide plate 7 is provided at the upper end of the upper surface of the heating core 3 in the left-right direction, and the air guide plate 7 extends toward the rear side of the heat exchange chamber 11. The wind passing through the cooling core 2 will be tilted upward toward the heating core 3, so the air guide plate 7 is provided at the upper end of the upper surface of the heating core 3 to reverse the airflow blowing toward the heating core 3, forming a "downward pressure" effect, realizing the guiding trend of "pressing" the airflow toward the bottom of the heating core 3, and ensuring that the airflow passes through the heating core 3 well and is sent out through the air outlet.

[0037] In this embodiment, the housing 1 comprises an upper housing and a lower housing which are assembled by stacking up and down. The upper and lower housings are assembled by using a structure of splicing up and down to facilitate the disassembly and assembly of internal components.

[0038] Example 2

[0039] The tractor of this embodiment includes the evaporator for secondary filtration and quaternary filtration in the agricultural machinery cab of Embodiment 1.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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. An evaporator for secondary and quaternary filtration in the cab of agricultural machinery, characterized in that: The invention comprises a shell (1), a cooling core (2) and a heating core (3), wherein the shell (1) defines a heat exchange chamber (11), wherein the cooling core (2) and the heating core (3) are respectively installed in the heat exchange chamber (11), wherein the heat exchange chamber (11) is provided with a secondary filter air inlet, a fourth filter air inlet and an air outlet, wherein a blower (4) and an evaporating fan (5) are provided in the shell (1), wherein the inlet of the blower (4) is connected to the outside, wherein the evaporating fan (5) has two groups of corresponding inlets and outlets, wherein the outlet of the blower (4) is respectively connected to the two groups of inlets of the evaporating fan (5) through a secondary filter air duct and a fourth filter air duct, wherein the two groups of outlets of the evaporating fan (5) are respectively connected to the secondary filter air inlet and the fourth filter air inlet in a one-to-one correspondence, and wherein the secondary filter air duct and the fourth filter air duct are respectively provided with damper actuators (6).

2. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 1, characterized in that: The shell (1) is provided with the heat exchange chamber (11) at the front left side, the first installation area at the front right side, the second installation area at the rear left side, and the third installation area at the rear right side. The blower (4) is installed in the first installation area. The left and right sides of the rear side of the heat exchange chamber (11) are respectively provided with the secondary filter air inlet and the fourth filter air inlet. The front side of the heat exchange chamber (11) is provided with the air outlet. The evaporator fan (5) is installed in the second installation area. The two inlets of the evaporator fan (5) are spaced apart from each other on the left and right sides. The left inlet of the evaporator fan (5) is connected to the secondary filter air duct, and the right inlet of the evaporator fan (5) is connected to the fourth filter air duct.

3. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 2, characterized in that: The rear side of the second installation area defines the secondary filter air duct, and the third installation area defines the fourth filter air duct.

4. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 2, characterized in that: The pipe inlet and outlet of the heating core (3) are respectively connected to a warm water pipe, and the warm water pipe passes through the first installation area. The pipe inlet and outlet of the cooling core (2) are respectively connected to a refrigerant pipe.

5. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 2, characterized in that: The heating core (3) is arranged on the front side of the cooling core (2), and both are arranged obliquely and distributed in a V shape.

6. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 5, characterized in that: The inclination angle of the heating core (3) is 125°, and the inclination angle of the cooling core (2) is 135°.

7. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 6, characterized in that: An air inlet chamber is defined between the refrigeration core (2) and the rear side of the heat exchange chamber (11), and a guide plate (111) is provided in the air inlet chamber. The guide plate (111) is an arc plate, and a plurality of the guide plates (111) are provided and coaxially distributed. The diameters of the plurality of guide plates (111) are different, and the arc-shaped openings of the plurality of guide plates (111) are all oriented toward the rear side of the heat exchange chamber (11), with one end close to the refrigeration core (2) and the other end close to the bottom wall of the heat exchange chamber (11).

8. The evaporator for secondary and quaternary filtration in the cab of agricultural machinery according to claim 7, characterized in that: An air guide plate (7) is provided at the upper end of the upper surface of the heating core (3) along the left-right direction, and the air guide plate (7) extends toward the rear side of the heat exchange chamber (11).

9. An evaporator for secondary and quaternary filtration in an agricultural machinery cab according to any one of claims 1 to 8, characterized in that: The housing (1) comprises an upper housing and a lower housing which are assembled and stacked up and down.

10. A tractor, characterized in that: It comprises the evaporator for secondary filtration and quaternary filtration in the cab of agricultural machinery as described in any one of claims 1 to 9.

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