A vehicle-mounted split electric drive air conditioner for engineering vehicles

Abstract

The present invention discloses a vehicle-mounted split electric drive air conditioner for engineering vehicles, which includes a condenser assembly and an evaporator assembly. The condenser assembly is arranged inside the vehicle body, and the evaporator assembly is arranged outside the vehicle body. The condenser assembly includes a frame, in which a rotary compressor, a pressure protection switch and an electrical assembly box are installed. The rotary compressor is a 24V variable-frequency rotary compressor. A compressor controller for opening and closing the rotary compressor is installed in the electrical assembly box, and the electrical assembly box is connected in series with the evaporator assembly and the pressure protection switch. A condensing core body is installed in the frame, and the rotary compressor is connected through a copper pipe inside the frame. A compression cooling chamber is installed inside the frame, and the compression cooling chamber is located between the condensing fan and the electrical assembly box. It does not require the hydraulic pump or engine of the engineering vehicle to provide power, nor does it require high and low pressure connecting liquid pipes of such a length from the engine to the operation room, separating the relationship with the power performance of the engineering vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle air conditioners, and particularly to a split electric drive air conditioner for construction vehicles. Background Art

[0002] At present, the well-known split air conditioners for construction vehicles are basically traditional air conditioners. In the cabs or workrooms of common construction vehicles such as large cranes, air conditioners are required to provide a comfortable environment for the staff. Construction vehicles usually operate in environments with strong sunlight (with glass walls all around for easy viewing), high temperatures, and large vibrations. Ordinary household air conditioners often cannot work properly under such conditions.

[0003] The existing air conditioners for construction vehicles are divided into hydraulic start air conditioners and construction vehicle power drive mechanical air conditioners according to the driving method. The hydraulic air conditioner uses the power source of the hydraulic system branch of the construction vehicle to drive a hydraulic motor, and the hydraulic motor drives the air conditioner compressor to work. The disadvantage of the hydraulic air conditioner is that it must work synchronously with the construction vehicle, and since the air conditioner uses the power source of the construction vehicle, the working ability of the construction vehicle is unstable. The construction vehicle power drive mechanical air conditioner is directly driven by the construction vehicle engine, which also consumes the power of the construction vehicle and weakens the working system ability of the construction vehicle. The compressors of the above two types of air conditioners are all special vehicle air conditioners with complex technology and high cost; when the construction machinery is idle, due to the need to start the air conditioner, the construction vehicle engine must also be started, thus consuming a large amount of fuel and discharging waste gas, causing a great waste of resources. Most of their power comes from the engine. When the air conditioner works, the engine drives the hydraulic pump to drive the compressor to run. However, when the construction vehicle is in a parked state, only by starting the engine can the air conditioner be started, resulting in waste of fuel. Starting the air conditioner when the construction vehicle is working will also increase fuel consumption and working consumption, and the operation of the air conditioner depends on the engine. Moreover, the current traditional air conditioners for construction vehicles cannot change the working state of the air conditioner compressor according to the change of the ambient temperature.

[0004] In view of these defects, there has emerged on the market a construction vehicle electric integrated air conditioner that uses an automobile battery as a kinetic energy providing device. The refrigeration effect of this integrated electric air conditioner also fails to meet the needs of construction vehicles, especially large construction vehicles (such as large cranes), and it is troublesome to install, with poor reliability and stability and inconvenient maintenance. Summary of the Invention

[0005] To solve the above problems, the present invention proposes a vehicle-mounted split electric drive air conditioner for engineering vehicles, which includes a condenser assembly and an evaporator assembly. The condenser assembly is arranged inside the vehicle body, and the evaporator assembly is arranged outside the vehicle body; the condenser assembly includes a frame, inside which a rotary compressor, a pressure protection switch and an electrical assembly box are installed. The rotary compressor is a V-frequency conversion rotary compressor. Inside the electrical assembly box, a compressor controller for opening and closing the rotary compressor is installed, and the electrical assembly box is connected in series with the evaporator assembly and the pressure protection switch; a condenser core is installed inside the frame. The condenser core is installed between the left support plate and the right support plate of the frame. A condenser fan is installed on the side wall of the frame in front of the condenser core. The air inlet joint of the condenser core is directly above the right side of the condenser core. Inside the frame, it is connected to the rotary compressor through a copper pipe. The air outlet joint of the condenser core is directly below the right side of the condenser core. It is connected to a high and low pressure cut-off valve installed on the frame through a copper pipe from the air outlet joint, and a hose is connected to the evaporator assembly therefrom. The pressure protection switch is installed on the lower side of the copper pipe near the inlet and outlet of the compressor; a compression cooling chamber is installed inside the frame, and the compression cooling chamber is located between the condenser fan and the electrical assembly box.

[0006] Further, the rotary compressor is installed in the middle of the frame. Fixed brackets are fixed to both the bottom and the side wall of the rotary compressor. A vertical plate is fixed to the inner bottom of the frame of the condenser assembly. The fixed bracket on the side wall of the rotary compressor is connected to the vertical plate by bolts, and the fixed bracket at the bottom of the rotary compressor is connected to the bottom of the frame by bolts. Shock pads are fixed at the joints of multiple fixed brackets.

[0007] Further, a drying filter is connected to the outer side of the copper pipe, and a condenser core inlet and outlet joint is connected to one side of the drying filter.

[0008] Further, a power supply box is installed inside the frame, and the power supply box is composed of two vehicle-mounted batteries of V connected in series.

[0009] Further, the evaporator assembly includes a housing, inside which an evaporator core is installed. An evaporation fan is installed on the side wall of the housing. An evaporation cooling chamber is arranged behind the evaporation fan, and the evaporation cooling chamber extends to the top of the housing, and multiple evaporator air outlets are opened at the top of the evaporation cooling chamber; an electronic expansion valve is also installed inside the housing, and a microcomputer control device box is installed outside the housing.

[0010] Further, a temperature sensor, a signal receiver and an operation signal connection wire harness are installed inside the housing and are connected. A heater joint connected to the operation signal connection wire harness is installed outside the housing. A heater is installed inside the frame of the condenser assembly, and the heater is connected to the heater joint. An air outlet joint box air inlet joint communicating with the inside of the housing is installed on the side wall of the evaporator housing.

[0011] Furthermore, a transfer plate is arranged inside the vehicle body. The condenser assembly is installed on the transfer plate. A blocking plate is vertically arranged on the side of the condenser assembly. The blocking plate separates the inside and outside of the vehicle body. Above the blocking plate inside the vehicle body, there is a top plate that can swing relative to the inner wall of the vehicle body. Two connecting plates are fixed to the bottom of the top plate. The side walls of the two connecting plates are respectively in contact with the opposite side walls of the blocking plate. A gear A is arranged on one side wall of the blocking plate. A gear A that can mesh with the gear A is arranged on one side of the gear A. The gear A is rotatably connected to the inner wall of the vehicle body through a driving rod. One end of the driving rod is connected to a stepping motor; a contact roller is fixed to the top of the inner wall of the vehicle body. The contact roller is in contact with the top of the top plate. Two mounting plates are fixed to the front and back of the bottom of the top plate. The connecting plate and the mounting plate are respectively arranged on both sides relative to the contact roller. The upper end of the mounting plate is rotatably connected to a rotating rod. A gear B is fixed to the outer side of the rotating rod.

[0012] Furthermore, a transmission belt A is arranged on the outer sides of the driving rod of the gear A and the rotating rod of the gear B. Support frames are installed on the outer sides of the driving rod of the gear A and the rotating rod of the gear B. A gear B is arranged on the top of the transfer plate. When the blocking plate moves to the topmost position, the gear B meshes with the gear B, and the transmission belt A is in a straightened state. The transmission belt A is wound around the outer circles of the driving rod of the gear A and the rotating rod of the gear B.

[0013] Furthermore, a lifting mechanism is arranged outside the vehicle body. The lifting mechanism includes a receiving seat. The evaporator assembly is installed on the receiving seat. The top of the receiving seat is flush with the bottom of the transfer plate. Threaded rods are connected to the corner ends of the receiving seat. The threaded rods are driven by a chain to rotate in the same direction.

[0014] Furthermore, a pawl is arranged on the side wall of the blocking plate opposite to the gear A. A ratchet wheel that can cooperate with the pawl is arranged on one side of the pawl. When the blocking plate descends, the pawl drives the ratchet wheel to rotate. A cone wheel A is installed on one side of one of the threaded rods. A transmission belt B is wound around the outer side surfaces of the rotating roller of the cone wheel A and the rotating roller of the ratchet wheel. A cone wheel B that meshes with the cone wheel A is fixed to the outer side surface of the threaded rod close to the cone wheel A.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. It does not require the power supply of the engineering vehicle hydraulic pump or the engine, nor does it require the high and low pressure connecting liquid pipes of such a length from the engine to the operation room, reducing the vehicle-mounted cost. It directly uses the 24V battery of the freight car as the power source, which is more convenient to use, not affected by the engine state, can reduce the waste of fuel, and separates the relationship with the power performance of the engineering vehicle.

[0017] 2. It is simple to install and maintain; the installation position uses the original traditional air conditioner installation position without any modification. At the same time, it reduces many accessories required during the installation of the traditional air conditioner. It does not require the engineering vehicle hydraulic pump, nor does it require the high and low pressure connecting liquid pipes of such a length from the engine to the operation room, reducing the labor, material and time costs of air conditioner installation.

[0018] 3. It has a relatively high energy efficiency ratio, with a short liquid pipe connection, less refrigeration capacity loss. It adopts a vertical rotor variable-frequency compressor, with a DC 24V voltage, different from the 220V high voltage, equipped with digital microcomputer control, low energy consumption and high efficiency.

[0019] 4. When the condenser assembly and the evaporator assembly need to be removed for maintenance, through the cooperation of each component, the condenser assembly can be transferred outside the vehicle body, and the heights of the condenser assembly and the evaporator assembly can be reduced, so that the condenser assembly and the evaporator assembly can be disassembled or maintained at a low position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the evaporator assembly in the present invention;

[0021] Figure 2 It is another direction structural diagram of the evaporator assembly in the present invention;

[0022] Figure 3 It is a schematic internal structural diagram of the condenser assembly in the present invention;

[0023] Figure 4 It is another direction internal structural diagram of the condenser assembly in the present invention;

[0024] Figure 5 It is a schematic external structural diagram of the condenser assembly in the present invention;

[0025] Figure 6 is Figure 3 a schematic installation structural diagram of the rotary compressor in

[0026] Figure 7 It is a schematic diagram of the internal and external structures of the vehicle body in the present invention.

[0027] The description of the reference numerals in the drawings is as follows: 1. Frame; 2. Rotary compressor; 3. Condensing core; 4. Condensing fan; 5. Fixed bracket; 6. High and low pressure cut-off valve; 7. Vertical plate; 8. Copper tube; 9. Electrical assembly box; 10. Bolt; 11. Housing; 12. Evaporator core; 13. Evaporator fan; 15. Evaporator air outlet; 16. Evaporative cooling chamber; 17. Shock pad; 18. Air outlet joint; 19. Air inlet joint; 21. Compression cooling chamber; 25. Dry filter; 26. Power supply box; 28. Microcomputer control device box; 29. Heater joint; 30. Condensing core inlet and outlet joint; 31. Heater; 32. Transfer plate; 33. Baffle; 34. Top plate; 35. Connecting plate; 36. Gear teeth A; 37. Gear A; 38. Contact roller; 39. Mounting plate; 40. Rotating rod; 41. Supporting frame; 42. Gear B; 43. Drive belt A; 44. Gear teeth B; 45. Bearing seat; 46. Threaded rod; 47. Pawl; 48. Ratchet; 49. Tapered pulley A; 50. Drive belt B; 51. Tapered pulley B. Detailed implementation mode

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following further describes the present invention with reference to the drawings of the specification:

[0031] Embodiment 1:

[0032] As Figures 1 to 6As shown in the figure, a vehicle-mounted split electric drive air conditioner for engineering vehicles includes a condenser assembly and an evaporator assembly. The condenser assembly is arranged inside the vehicle body, and the evaporator assembly is arranged outside the vehicle body. The condenser assembly includes a frame 1, in which a rotary compressor 2, a pressure protection switch and an electrical assembly box 9 are installed. The rotary compressor 2 is a 24V variable-frequency rotary compressor. In the electrical assembly box 9, a compressor controller for turning on and off the rotary compressor 2 is installed, and the electrical assembly box 9 is connected in series with the evaporator assembly and the pressure protection switch. A condenser core 3 is installed in the frame 1. The condenser core 3 is installed between the left support plate and the right support plate of the frame 1. A condenser fan 4 is installed on the side wall of the frame 1 in front of the condenser core 3. The air inlet joint 19 of the condenser core 3 is directly above the right side of the condenser core 3. Inside the frame 1, it is connected to the rotary compressor 2 through a copper pipe 8. The air outlet joint 18 of the condenser core 3 is directly below the right side of the condenser core 3. It is connected to a high and low pressure cut-off valve 6 installed on the frame 1 through a copper pipe 8. A hose is connected to the evaporator assembly from this. The pressure protection switch is installed on the lower side of the copper pipe 8 near the inlet and outlet of the compressor. A compression cooling chamber 21 is installed inside the frame 1. The compression cooling chamber 21 is located between the condenser fan 4 and the electrical assembly box 9. The outer side of the copper pipe 8 is connected to a drying filter 25, and one side of the drying filter 25 is connected to a condenser core inlet and outlet joint 30. A power supply box 26 is installed in the frame 1. The power supply box 26 is composed of two 12V vehicle-mounted storage batteries connected in series.

[0033] In this embodiment, the evaporator assembly includes a housing 11, in which an evaporator core 12 is installed. An evaporation fan 13 is installed on the side wall of the housing 11. An evaporation cooling chamber 16 is arranged behind the evaporation fan 13. The evaporation cooling chamber 16 extends to the top of the housing 11, and a plurality of evaporator air outlets 15 are opened at the top of the evaporation cooling chamber 16. An electronic expansion valve is also installed in the housing 11. A microcomputer control device box 28 is installed outside the housing 11. A temperature sensor, a signal receiver and an operation signal connection wire harness are installed and connected in the housing 11. A heater joint 29 connected to the operation signal connection wire harness is installed outside the housing 11. A heater 31 is installed in the frame 1 of the condenser assembly. The heater 31 is connected to the heater joint 29. An air outlet joint 18 box and an air inlet joint 19 communicating with the inside of the housing 11 are installed on the side wall of the housing 11 of the evaporator.

[0034] Among them, the integrated electric rotary compressor 2 with a DC 24V voltage grade has a unique installation, occupies less space, is convenient for pipeline connection, has a relatively high energy efficiency ratio, has a short liquid pipe connection, less refrigeration capacity loss, adopts a vertical rotor variable-frequency compressor, DC 24V voltage, different from the 220V high voltage, is equipped with digital microcomputer control, low energy consumption and high efficiency.

[0035] The compressor controller controls the vertical rotary compressor 2 to start. The rotary compressor 2 discharges high-temperature and high-pressure gaseous refrigerant to the condensation core 3. After heat exchange through the condensation fan 4, the condensation core 3 discharges high-pressure and low-temperature liquid refrigerant into the evaporator assembly, and the evaporator discharges misty cold air to cool the interior of the operation room.

[0036] In this embodiment, the rotary compressor 2 is installed in the middle of the frame 1. Fixed brackets 5 are fixed to both the bottom and side walls of the rotary compressor 2. A vertical plate 7 is fixed to the inner bottom of the frame 1 of the condenser assembly. The fixed bracket 5 on the side wall of the rotary compressor 2 is connected to the vertical plate 7 through bolts 10, and the fixed bracket 5 at the bottom of the rotary compressor 2 is connected to the bottom of the frame 1 through bolts 10. Shock pads 17 are fixed at the joints of multiple fixed brackets 5.

[0037] Among them, the rotary compressor 2 is connected to the frame 1 through the fixed bracket 5, the vertical plate 7 and the bolts 10. Shock pads 17 are designed at the fixed positions, which not only makes the installation of the rotary compressor 2 stable, but also meets the requirement that the rotary compressor 2 will not be damaged by the vibration of the engineering vehicle.

[0038] Embodiment 2:

[0039] As Figure 7 shown, on the basis of the above Embodiment 1, a transfer plate 32 is arranged inside the vehicle body. The condenser assembly is installed on the transfer plate 32. A blocking plate 33 is vertically arranged on the side of the condenser assembly. The blocking plate 33 separates the inside and outside of the vehicle body. Above the blocking plate 33 inside the vehicle body, a top plate 34 that can swing relative to the inner wall of the vehicle body is arranged. Two connecting plates 35 are fixed to the bottom of the top plate 34. The side walls of the two connecting plates 35 are respectively in contact with the opposite side walls of the blocking plate 33. A rolling tooth A36 is arranged on one side wall of the blocking plate 33. A gear A37 that can mesh with the rolling tooth A36 is arranged on one side of the rolling tooth A36. The gear A37 is rotationally connected to the inner wall of the vehicle body through a driving rod, and one end of the driving rod is connected with a stepping motor; a contact roller 38 is fixed to the top of the inner wall of the vehicle body. The contact roller 38 is in contact with the top of the top plate 34. Two mounting plates 39 are fixed to the front and back of the top bottom. The connecting plate 35 and the mounting plate 39 are respectively arranged on both sides relative to the contact roller 38. A rotating rod 40 is rotationally connected to the upper end of the mounting plate 39. A gear B42 is fixed to the outer side of the rotating rod 40; a transmission belt A43 is arranged on the outer sides of the driving rod of the gear A37 and the rotating rod 40 of the gear B42. Support frames 41 are installed on the outer sides of the driving rod of the gear A37 and the rotating rod 40 of the gear B42. A rolling tooth B44 is formed on the top of the transfer plate 32. When the blocking plate 33 moves to the topmost position, the gear B42 meshes with the rolling tooth B44, and the transmission belt A43 is in a straightened state. The transmission belt A43 is wound around the outer circles of the driving rod and the rotating rod 40 of the gear B42.

[0040] When the condenser assembly and the evaporator assembly need to be removed for maintenance, start the stepper motor to drive the drive rod and the gear A37 to rotate, and then drive the blocking plate 33 to move upward between the two connecting plates 35. At this time, the pawl 47 will not drive the ratchet 48 to rotate; after the blocking plate 33 moves to contact the top plate 34, the top end of the top plate 34 is lifted to make the top plate 34 swing. When the blocking plate 33 moves to the topmost position, the gear B42 meshes with the hobbing B44. At this time, the gear A37 no longer drives the blocking plate 33 to move upward through the hobbing A36, and the transmission belt A43 is in a straightened state. When the gear A37 rotates, it drives the gear B42 to rotate through the transmission belt A43, and the rotation directions of the gear A37 and the gear B42 are opposite. The cooperation between the gear B42 and the hobbing B44 drives the transfer plate 32 to move, and then transports the transfer plate 32 out of the vehicle body in the direction of the receiving seat 45.

[0041] In this embodiment, a lifting mechanism is provided outside the vehicle body. The lifting mechanism includes a receiving seat 45. The evaporator assembly is installed on the receiving seat 45. The top of the receiving seat 45 is flush with the bottom of the transfer plate 32. The corner ends of the receiving seat 45 are threadedly connected with threaded rods 46. The threaded rods 46 are driven by a chain to rotate in the same direction; a pawl 47 is provided on the side wall of the blocking plate 33 relative to the hobbing A36. A ratchet 48 that can cooperate with the pawl 47 is provided on one side of the pawl 47. When the blocking plate 33 moves downward, the pawl 47 drives the ratchet 48 to rotate. A cone wheel A49 is installed on one side of one of the threaded rods 46. A transmission belt B50 is wound around the roller of the cone wheel A49 and the outer side of the roller of the ratchet 48. A cone wheel B51 that meshes with the cone wheel A49 is fixed on the outer side of the threaded rod 46 near the cone wheel A49.

[0042] After the transfer plate 32 completely moves onto the receiving seat 45, start the stepper motor to reverse, and then drive the drive rod and the gear A37 to reverse. The gear A37 drives the blocking plate 33 to move downward through the hobbing A36. While the blocking plate 33 moves downward, it drives the ratchet 48 to rotate through the pawl 47, and then drives the cone wheel A49 to rotate through the transmission belt B50. The cone wheel B51 rotates together with the cone wheel A49 and drives the threaded rod 46 to rotate, and then drives the receiving seat 45 to move downward, so that the condenser assembly and the evaporator assembly can be disassembled or maintained at a low place.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A vehicle-mounted split electric drive air conditioner for construction vehicles, comprising a condenser assembly and an evaporator assembly, characterized in that: The condenser assembly is arranged inside the vehicle body, and the evaporator assembly is arranged outside the vehicle body; the condenser assembly includes a frame (1), a rotary compressor (2), a pressure protection switch and an electrical assembly box (9) are installed inside the frame (1), the rotary compressor (2) is a 24V variable-frequency rotary compressor, a compressor controller for opening and closing the rotary compressor (2) is installed inside the electrical assembly box (9), and the electrical assembly box (9) is connected in series with the evaporator assembly and the pressure protection switch; a condensation core (3) is installed inside the frame (1), the condensation core (3) is installed between the left support plate and the right support plate of the frame (1), a condensation fan (4) is installed on the side wall of the frame (1) in front of the condensation core (3), the air inlet joint (19) of the condensation core (3) is directly above the right side of the condensation core (3), and inside the frame (1), it is connected to the rotary compressor (2) through a copper pipe (8), the air outlet joint (18) of the condensation core (3) is directly below the right side of the condensation core (3), and it is connected to a high and low pressure cut-off valve (6) installed on the frame (1) through a copper pipe (8), a hose is connected to the evaporator assembly therefrom, and the pressure protection switch is installed on the lower side of the copper pipe (8) near the inlet and outlet of the compressor; a compression cooling chamber (21) is installed inside the frame (1), and the compression cooling chamber (21) is located between the condensation fan (4) and the electrical assembly box (9); A transfer plate (32) is arranged inside the vehicle body, the condenser assembly is installed on the transfer plate (32), a blocking plate (33) is vertically arranged on the side of the condenser assembly, the blocking plate (33) separates the inside and outside of the vehicle body, a top plate (34) that can swing relative to the inner wall of the vehicle body is arranged above the blocking plate (33) inside the vehicle body, two connecting plates (35) are fixed to the bottom of the top plate (34), the side walls of the two connecting plates (35) are respectively in contact with the opposite side walls of the blocking plate (33), a rolling tooth A (36) is arranged on one side wall of the blocking plate (33), a gear A (37) that can mesh with the rolling tooth A (36) is arranged on one side of the rolling tooth A (36), the gear A (37) is rotationally connected to the inner wall of the vehicle body through a driving rod, and one end of the driving rod is connected to a stepping motor; a contact roller (38) is fixed to the top of the inner wall of the vehicle body, the contact roller (38) is in contact with the top of the top plate (34), two mounting plates (39) are fixed to the front and back of the bottom of the top plate, the connecting plate (35) and the mounting plate (39) are respectively arranged on both sides of the contact roller (38), and the lower end of the mounting plate (39) is rotationally connected to a rotating rod (40), and a gear B (42) is fixed to the outer side of the rotating rod (40).

2. The split-type electric drive air conditioner for construction vehicles according to claim 1, wherein: The rotary compressor (2) is installed in the middle of the frame (1). Fixed brackets (5) are fixed to both the bottom and the side wall of the rotary compressor (2). A vertical plate (7) is fixed to the inner bottom of the frame (1) of the condenser assembly. The fixed bracket (5) on the side wall of the rotary compressor (2) is connected to the vertical plate (7) by bolts (10), and the fixed bracket (5) at the bottom of the rotary compressor (2) is connected to the bottom of the frame (1) by bolts (10). Shock pads (17) are fixed at the joints of multiple fixed brackets (5).

3. The split-type electric drive air conditioner for construction vehicles according to claim 1, wherein: A drying filter (25) is connected to the outer side of the copper tube (8), and a condensation core inlet / outlet joint (30) is connected to one side of the drying filter (25).

4. The on-vehicle split electric drive air conditioner for construction vehicles according to claim 1, wherein: A power supply box (26) is installed in the frame (1), and the power supply box (26) is composed of two 12V vehicle-mounted storage batteries connected in series.

5. The split-type electric drive air conditioner for construction vehicles according to claim 1, characterized in that: The evaporator assembly includes a housing (11). An evaporator core (12) is installed in the housing (11). An evaporation fan (13) is installed on the side wall of the housing (11). An evaporation cooling chamber (16) is arranged behind the evaporation fan (13). The evaporation cooling chamber (16) extends to the top of the housing (11), and a plurality of evaporator air outlets (15) are opened at the top of the evaporation cooling chamber (16). An electronic expansion valve is also installed in the housing (11), and a microcomputer control device box (28) is installed outside the housing (11).

6. The split-type electric drive air conditioner for engineering vehicles according to claim 5, characterized in that: A temperature sensor, a signal receiver, and an operation signal connection wire harness are installed in the housing (11). A heater connector (29) connected to the operation signal connection wire harness is installed outside the housing (11). A heater (31) is installed in the frame (1) of the condenser assembly, and the heater (31) is connected to the heater connector (29). An air outlet connector (18) and an air inlet connector (19) communicating with the inside of the housing (11) are installed on the side wall of the housing (11) of the evaporator.

7. The split-type electric drive air conditioner for engineering vehicles according to claim 1, wherein: A drive belt A (43) is arranged outside the drive rod of the gear A (37) and the rotating rod (40) of the gear B (42). Support frames (41) are installed outside the drive rod and the rotating rod (40) of the gear B (42). A gear B (44) is opened at the top of the transfer plate (32). When the blocking plate (33) moves to the topmost position, the gear B (42) meshes with the gear B (44), and the drive belt A (43) is in a straightened state. The drive belt A (43) is wound around the outer circles of the drive rod and the rotating rod (40) of the gear B (42).

8. The split-type electric drive air conditioner for engineering vehicles according to claim 1, characterized in that: A lifting mechanism is arranged outside the vehicle body. The lifting mechanism includes a receiving seat (45). The evaporator assembly is installed on the receiving seat (45). The top of the receiving seat (45) is flush with the bottom of the transfer plate (32). Threaded rods (46) are connected to the corner ends of the receiving seat (45), and the threaded rods (46) are driven by a chain to rotate in the same direction.

9. The on-vehicle split-type electric drive air conditioner for engineering vehicles according to claim 8, wherein: The blocking plate (33) is provided with a pawl (47) on the side wall opposite to the side wall of the hobbing gear A (36). A ratchet wheel (48) that can cooperate with the pawl (47) is arranged on one side of the pawl (47). When the blocking plate (33) moves downward, the pawl (47) drives the ratchet wheel (48) to rotate. A cone pulley A (49) is installed on one side of one of the threaded rods (46). A transmission belt B (50) is wound around the outer side surfaces of the rollers of the cone pulley A (49) and the ratchet wheel (48). A cone pulley B (51) that meshes with the cone pulley A (49) is fixed to the outer side surface of the threaded rod (46) close to the cone pulley A (49).

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