Air conditioner external circulation inlet air filtering system with dust pre-settling function for harvester

Abstract

The invention belongs to the technical field of harvesters, and particularly discloses an air conditioner external circulation inlet air filtering system with a dust collector for a harvester, and the air conditioner external circulation inlet air filtering system comprises a dust collector cavity, a filter cavity, an external circulation partition plate assembly, a booster fan, a housing assembly and an evaporator assembly, the dust collector cavity is located at the right end of the filter cavity, and the outer circulation partition plate assembly is located at the right end of the filter cavity; the pre-dust-falling cavity and the filter cavity are cavities communicated with each other, the upper ends of the pre-dust-falling cavity and the filter cavity are open, and the upper ends of the pre-dust-falling cavity and the filter cavity are provided with outer circulation partition plate assemblies; the left end of the filter cavity is communicated with the booster fan and the housing assembly; the booster fan and housing assembly is communicated with the evaporator assembly through an evaporator connecting air pipe; the device is simple in structure and convenient to maintain; the maintenance time interval of the air conditioner external circulation filter element of the harvester can be effectively prolonged, the service life of the external circulation filter element is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of harvesters, and in particular relates to an air conditioning external circulation air inlet filtering system with pre-dust reduction for harvesters. Background Art

[0002] The air conditioning external circulation air intake system of the harvester usually adopts a structure similar to that of a car or tractor; that is, a filter element is installed at the air inlet, and the suction force of the air conditioning's evaporative fan is used to draw outside air into the cab. When the air passes through the filter element, most of the impurities and dust in the air will be adsorbed by the filter element to purify the air.

[0003] However, when the harvester is working, the working environment is even more severe than that of a tractor. During the harvesting process, the harvester will raise a large amount of dust and lint, and the straw debris produced during the harvesting will also be mixed in. In this environment, the filtering load of the filter element in the air intake system of the harvester's air conditioner will be greatly increased, reducing the service life of the filter element. Summary of the invention

[0004] In view of the problems existing in the background technology, the present invention provides an air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an air-conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, comprising a pre-dust reduction chamber, a filter chamber, an external circulation baffle assembly, a booster fan and a cover assembly and an evaporator assembly, the pre-dust reduction chamber is located at the right end of the filter chamber, the pre-dust reduction chamber and the filter chamber are interconnected cavities, the upper ends of the pre-dust reduction chamber and the filter chamber are open, and the upper ends of the pre-dust reduction chamber and the filter chamber are provided with an external circulation baffle assembly; the left end of the filter chamber is connected to the booster fan and the cover assembly; the booster fan and the cover assembly are connected to the evaporator assembly through the evaporator connecting air duct.

[0006] A through hole A is provided at the front end of the pre-dust reduction chamber, and a pre-filter plate and a dust collecting box are provided on the through hole A. The pre-filter plate and the dust collecting box are mounted on the through hole A by bolts.

[0007] A through hole B is provided at the front end of the filter cavity, an external circulation filter element cover is provided on the through hole B, and the external circulation filter element cover is mounted on the through hole B by bolts.

[0008] The external circulation baffle assembly includes a front baffle, a longitudinal baffle, a transverse baffle, a rear baffle and an upper cover; the front baffle, longitudinal baffle, transverse baffle and rear baffle are fixedly connected to the lower end surface of the upper cover; the front baffle is located on the right end surface of the pre-dust reduction chamber, the longitudinal baffle is located between the pre-dust reduction chamber and the filter chamber, and the rear baffle is located between the filter chamber and the booster fan and the cover assembly; the longitudinal baffle and the rear baffle are connected through a transverse baffle, and the transverse baffle divides the filter chamber into a front chamber of the filter element and a rear chamber of the filter element.

[0009] The longitudinal partition is provided with a through hole C, and the pre-dust reduction chamber is connected with the front chamber of the filter element of the filter chamber through the through hole C; the transverse partition is provided with a through hole D, and the external circulation filter element is provided on the through hole D; the rear baffle is provided with a through hole E, and the rear chamber of the filter element of the filter chamber is connected with the booster fan and the cover assembly through the through hole E.

[0010] The booster fan and cover assembly includes a booster fan and a fan cover; the fan cover is an "L"-shaped shell, and the right end of the fan cover is connected to the air outlet of the filter chamber; the rear end of the fan cover is connected to the evaporator connecting air duct; the booster fan is installed between the fan cover and the evaporator connecting air duct.

[0011] A sealing sponge is provided between the contact surfaces of the outer circulation partition assembly and the pre-dust reduction chamber and the filter chamber.

[0012] Beneficial effects of the invention: The invention provides an air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester. The device has a simple structure and is easy to maintain. It can effectively extend the maintenance time interval of the air conditioning external circulation filter element of the harvester, extend the service life of the external circulation filter element, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0015] Figure 3 It is a structural schematic diagram of the external circulation partition assembly.

[0016] Figure 4 Schematic diagram of the structure of the sealing sponge.

[0017] Figure 5 It is a structural schematic diagram of the booster fan and cover assembly.

[0018] In the figure: 1. pre-dust reduction chamber, 12. bolts, 13. pre-filter hole plate and dust collection box, 14. sealing sponge, 15. outer top and lower cover assembly, 2. filter chamber, 23. external circulation filter element cover, 24. external circulation filter element, 3. external circulation partition assembly, 31. front baffle, 32. longitudinal baffle, 33. transverse baffle, 34. rear baffle, 35. upper cover, 36. filter element front chamber, 37. filter element rear chamber, 38. cavity E, 39. cavity B, 4. booster fan and cover assembly, 41. booster fan, 42. fan cover, 5. evaporator connecting air duct, 6. evaporator assembly. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] The following is combined with Figure 1-5 The specific implementation mode of the present invention is further elaborated in detail: an air-conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, comprising a pre-dust reduction chamber 1, a filter chamber 2, an external circulation partition assembly 3, a booster fan and cover assembly 4 and an evaporator assembly 6, wherein the pre-dust reduction chamber 1 is located at the right end of the filter chamber 2, a through hole A is provided at the front end of the pre-dust reduction chamber 1, a pre-filter orifice plate and a dust collecting box 13 are provided on the through hole A, and the pre-filter orifice plate and the dust collecting box 13 are mounted on the through hole A by bolts 12; the pre-filter orifice plate and the dust collecting box 13 comprise a pre-filter orifice plate and a dust collecting box; the pre-filter orifice plate is a porous flat plate, and the pre-filter orifice plate is mounted on the through hole A by bolts 12; the dust collecting box is arranged in the pre-dust reduction chamber 1 and is connected to the pre-filter orifice plate; in order to achieve the purpose of extending the service life of the external circulation filter element 24, the device utilizes the characteristics of aerodynamics, and in the external circulation filter element 24 A pre-dust reduction chamber 1 is added to the front part; because the ability of airflow to carry objects is proportional to the square of the airflow velocity, the greater the airflow velocity, the stronger the dust carrying ability, and the smaller the airflow velocity, the smaller the dust carrying ability; the outside air enters from the air inlet hole of the pre-filter plate, and because the air inlet hole is small, coarser straw and debris will be blocked on the outside of the orifice plate; when the air passes through the small holes of the pre-filter plate, the flow rate will be relatively large due to the small cross-sectional area, but when the air enters the pre-dust reduction chamber 1, the airflow channel will increase sharply, so the airflow after entering will quickly slow down, and the heavier particles in the air will settle and fall into the dust collecting box at the lower end, thereby achieving the purpose of pre-sedimentation of the incoming air and filtering the air entering the room; the pre-filter plate and the dust collecting box 13 can be installed using latches or bolts for easy replacement and cleaning; The pre-dust fall chamber 1 and the filter chamber 2 are interconnected cavities, a through hole B is provided at the front end of the filter chamber 2, an external circulation filter cover 23 is provided on the through hole B, and the external circulation filter cover 23 is installed on the through hole B by bolts 12; the external circulation filter cover 23 can be installed using latches or bolts for easy replacement and cleaning; the upper ends of the pre-dust fall chamber 1 and the filter chamber 2 are open, an external circulation baffle assembly 3 is provided at the upper ends of the pre-dust fall chamber 1 and the filter chamber 2, and a sealing sponge 14 is provided between the contact surface of the external circulation baffle assembly 3 and the pre-dust fall chamber 1 and the filter chamber 2; the sealing sponge 14 is used for sealing , to ensure that the interior of the device is isolated from the outside; the external circulation baffle assembly 3 includes a front baffle 31, a longitudinal baffle 32, a transverse baffle 33, a rear baffle 34 and an upper cover 35; the front baffle 31, the longitudinal baffle 32, the transverse baffle 33 and the rear baffle 34 are fixedly connected to the lower end surface of the upper cover 35; the front baffle 31 is located on the right end surface of the pre-dust reduction chamber 1, the longitudinal baffle 32 is located between the pre-dust reduction chamber 1 and the filter chamber 2, and the rear baffle 34 is located between the filter chamber 2 and the booster fan and the housing assembly 4; the longitudinal baffle 32 and the rear baffle 34 are connected through a transverse baffle 33, and the transverse baffle 33 passes through The filter chamber 2 is divided into a filter element front chamber 36 and a filter element rear chamber 37; the longitudinal partition plate 32 is provided with a through hole C, and the pre-dust reduction chamber 1 is connected with the filter element front chamber 36 of the filter chamber 2 through the through hole C; the transverse partition plate 33 is provided with a through hole D, and the through hole D is provided with an external circulation filter element 24; the rear baffle plate 34 is provided with a through hole E, and the filter element rear chamber 37 of the filter chamber 2 is connected with the booster fan and the housing assembly 4 through the through hole E; the filter chamber 2 is divided into a filter element front chamber 36 and a filter element rear chamber 37, and the external circulation filter element 24 is in the middle, and the external circulation filter element 24 used for filtering is installed in the through hole D; the filter element front chamber 36 The outermost side is sealed by the outer circulation filter cover 23, so that the front chamber 36 of the filter element is separated from the outside; the filtered air will enter the rear chamber 37 of the filter element, and the outer circulation filter cover 23 is installed in the same way as the pre-filter plate and the dust box 13, and is installed by bolts 12. It is easy to disassemble and assemble during use, and it is convenient to maintain or replace the outer circulation filter element 24; when the air enters the pre-dust settling chamber 1, the air that has been pre-settled passes through the cavity B39, the airflow turns, and shrinks, and enters the front chamber 36 of the filter element. After passing through the outer circulation filter element 24, the remaining debris and dust are filtered out and enter the rear chamber 37 of the filter element; The left end of the filter chamber 2 is connected to the booster fan and cover assembly 4; the booster fan and cover assembly 4 includes a booster fan 41 and a fan cover 42; the fan cover 42 is an "L"-shaped shell, and the right end of the fan cover 42 is connected to the air outlet of the filter chamber 2; the rear end of the fan cover 42 is connected to the evaporator connecting air duct 5; the booster fan 41 is installed between the fan cover 42 and the evaporator connecting air duct 5; because the air intake path is bent and there is an external circulation filter element 24 for filtering, the air intake resistance is large. When the external circulation filter element 24 is first used, the suction force of the evaporator fan in the evaporator assembly 6 can still meet the requirements; however, after the external circulation filter element 24 has been used for a period of time, the suction force of the evaporator fan in the evaporator assembly 6 cannot meet the requirements; at this time, turning on the booster fan 41 in the booster fan and cover assembly 4 can increase the suction force of the air, thereby ensuring the gas The amount of air entering can also be increased, and the dust holding capacity of the external circulation filter element 24 can also be increased, thereby extending the interval time for cleaning or replacement, and achieving the purpose of extending the use of the filter element; the booster fan and cover assembly 4 are connected to the evaporator assembly 6 through the evaporator connecting air duct 5; the evaporator assembly 6 is the terminal of the air conditioning external circulation air intake system, and is also an important heat exchange component of the air conditioning system. The evaporator is provided with a heat exchange core and a blower. The heat exchange core can perform heat exchange for cooling or heating. The blower blows the air entering the indoor or external circulation through the heat exchange filter element to promote heat exchange; when the filtered air enters the rear cavity 37 of the filter element, the air passes through the cavity E38, bends and turns again, and enters the booster fan and cover assembly 4; the air passing through the booster fan and cover assembly 4 finally passes through the evaporator connecting air duct 5 and enters the evaporator assembly 6, thereby realizing the whole process of air entering from the outdoors to the indoors.

[0021] The use process of the present invention is as follows: the outside air enters from the air inlet holes of the pre-filter plate and the pre-filter plate of the dust collecting box 13. Because the air inlet holes are small, coarser straw and debris will be blocked on the outside of the plate; when the air passes through the small holes of the pre-filter plate, due to the small cross-sectional area, the flow rate will be relatively large, but when the air enters the pre-dust settling chamber 1, the airflow channel will increase sharply, so the airflow after entering will quickly slow down, and the heavier particles in the air will settle and fall into the pre-filter plate and the dust collecting box 13, thereby filtering the air entering the room; when the pre-filter hole After the plate and the dust box 13 have been used for a period of time, the bolts 12 can be opened for replacement or cleaning; after the air enters the pre-dust settling chamber 1, the air after pre-sedimentation enters the front chamber 36 of the filter element, and after being filtered by the external circulation filter element 24, it enters the rear chamber 37 of the filter element; after the filtered air enters the rear chamber 37 of the filter element, the air passes through the cavity E38 and enters the booster fan and cover assembly 4; the air passing through the booster fan and the cover assembly 4 finally passes through the evaporator connecting air duct 5 and enters the evaporator assembly 6, thereby realizing the whole process of air entering from the outdoors to the indoors.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0023] The parts not described in detail in this invention are prior art.

Claims

1. An air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, comprising a pre-dust reduction chamber (1), a filter chamber (2), an external circulation baffle assembly (3), a booster fan and a housing assembly (4), and an evaporator assembly (6), wherein: The pre-dust fall chamber (1) is located at the right end of the filter chamber (2); the pre-dust fall chamber (1) and the filter chamber (2) are interconnected cavities; the upper ends of the pre-dust fall chamber (1) and the filter chamber (2) are open; the upper ends of the pre-dust fall chamber (1) and the filter chamber (2) are provided with an external circulation baffle assembly (3); the left end of the filter chamber (2) is connected to the booster fan and the cover assembly (4); the booster fan and the cover assembly (4) are connected to the evaporator assembly (6) via the evaporator connecting air duct (5).

2. According to claim 1, an air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, characterized in that: The front end of the pre-dust reduction chamber (1) is provided with a through hole A, and a pre-filter plate and a dust collecting box (13) are provided on the through hole A. The pre-filter plate and the dust collecting box (13) are mounted on the through hole A by means of bolts (12).

3. According to claim 1, an air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, characterized in that: A through hole B is provided at the front end of the filter chamber (2), an external circulation filter element cover plate (23) is provided on the through hole B, and the external circulation filter element cover plate (23) is mounted on the through hole B by means of bolts (12).

4. According to claim 1, the air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester is characterized by: The external circulation baffle assembly (3) comprises a front baffle (31), a longitudinal baffle (32), a transverse baffle (33), a rear baffle (34) and an upper cover (35); the front baffle (31), the longitudinal baffle (32), the transverse baffle (33) and the rear baffle (34) are fixedly connected to the lower end surface of the upper cover (35); the front baffle (31) is located at the right end surface of the pre-dust reduction chamber (1), the longitudinal baffle (32) is located between the pre-dust reduction chamber (1) and the filter chamber (2), and the rear baffle (34) is located between the filter chamber (2) and the booster fan and the housing assembly (4); the longitudinal baffle (32) and the rear baffle (34) are connected via the transverse baffle (33), and the transverse baffle (33) divides the filter chamber (2) into a filter element front chamber (36) and a filter element rear chamber (37).

5. According to claim 4, an air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester, characterized in that: The longitudinal partition plate (32) is provided with a through hole C, and the pre-dust reduction chamber (1) is connected to the filter element front chamber (36) of the filter chamber (2) through the through hole C; the transverse partition plate (33) is provided with a through hole D, and the external circulation filter element (24) is provided on the through hole D; the rear baffle plate (34) is provided with a through hole E, and the filter element rear chamber (37) of the filter chamber (2) is connected to the booster fan and the housing assembly (4) through the through hole E.

6. According to claim 1, the air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester is characterized by: The booster fan and housing assembly (4) comprises a booster fan (41) and a fan housing (42); the fan housing (42) is an "L"-shaped housing, the right end of the fan housing (42) is connected to the air outlet of the filter chamber (2); the rear end of the fan housing (42) is connected to the evaporator connecting air duct (5); the booster fan (41) is installed between the fan housing (42) and the evaporator connecting air duct (5).

7. According to claim 1, the air conditioning external circulation air inlet filtration system with pre-dust reduction for a harvester is characterized by: A sealing sponge (14) is provided between the contact surfaces of the external circulation partition assembly (3) and the pre-dust reduction chamber (1) and the filter chamber (2).

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