Evaporator assembly for engineering vehicle

Abstract

The utility model relates to the technical field of engineering vehicles, and discloses an evaporator assembly for an engineering vehicle, the evaporator assembly comprises a shell, an evaporator core arranged in the shell and a communicating pipeline, the shell is provided with two defrosting air ports and two air conditioner air ports located on the two sides of the defrosting air ports respectively, and the two defrosting air ports are communicated with the communicating pipeline. The shell is provided with a control piece capable of closing the defrosting air opening and the air conditioner air opening and a driving piece used for driving the control piece to move, the defrosting air opening and the air conditioner air opening both have an open state and a closed state, and when the defrosting air opening is in the open state, the air conditioner air opening is in the closed state. The number of the communicating pipelines is two, and the communicating pipelines and the defrosting air openings are arranged in a one-to-one correspondence mode, so that the pressure of gas exhausted through the defrosting openings is increased, the defrosting efficiency of the front windshield is improved, the time consumed when the vehicle is started in cold weather is shortened, and the working efficiency of the engineering vehicle is improved.

Description

Technical Field

[0001] This application belongs to the technical field of engineering vehicles, and particularly relates to an evaporator assembly for engineering vehicles. Background Art

[0002] Engineering vehicles are equipment used for transporting materials such as ores and slag. The evaporator assembly is an important component on engineering vehicles, which can improve the driving comfort of drivers and increase driving safety.

[0003] In the related art, the evaporator assembly includes a housing and an evaporator core disposed inside the housing. The housing is provided with a defrost air outlet and two air conditioning air outlets respectively located on both sides of the defrost air outlet. Since there are multiple defrost outlets on the instrument panel, and the defrost air outlet is connected to multiple defrost outlets through a connecting pipeline, the pressure of the gas discharged through the defrost outlet is relatively small, thus affecting the defrosting efficiency of the front windshield, resulting in the need to spend more time defrosting the front windshield when starting the vehicle in cold weather, and further affecting the working efficiency of the engineering vehicle. Summary of the Utility Model

[0004] This application provides an evaporator assembly for engineering vehicles to increase the pressure of the gas discharged through the defrost outlet, improve the defrosting efficiency of the front windshield, and improve the working efficiency of the engineering vehicle.

[0005] The technical solution adopted in this application is as follows:

[0006] An evaporator assembly for engineering vehicles includes a housing, an evaporator core disposed inside the housing, and a connecting pipeline. The housing is provided with a defrost air outlet and two air conditioning air outlets respectively located on both sides of the defrost air outlet. There are two defrost air outlets. The housing is provided with a control piece capable of closing the defrost air outlet and the air conditioning air outlets and a driving member for driving the movement of the control piece. Both the defrost air outlet and the air conditioning air outlets have an open state and a closed state. When the defrost air outlet is in the open state, the air conditioning air outlets are in the closed state. There are two connecting pipelines, which are arranged in one-to-one correspondence with the defrost air outlets.

[0007] By adopting the above technical solution, since the connecting pipelines are arranged in one-to-one correspondence with the defrosting openings and there are two defrosting air outlets, the pressure of the gas discharged through the defrosting openings is increased, so as to improve the defrosting efficiency of the front windshield, thereby reducing the time required for starting the vehicle in cold weather and improving the working efficiency of the engineering vehicle. In addition, when the defrosting air outlet is in the open state, the air-conditioning air outlet is in the closed state, so that more gas is discharged through the defrosting air outlet and blown onto the front windshield when defrosting the front windshield, and at the same time, the pressure of the gas discharged through the defrosting opening can be increased, so as to greatly improve the defrosting efficiency of the front windshield and further improve the working efficiency of the engineering vehicle.

[0008] Optionally, four control pieces are provided, and the four control pieces are respectively arranged in one-to-one correspondence with the two defrosting air outlets and the two air-conditioning air outlets, and four driving members are provided and arranged in one-to-one correspondence with the control pieces.

[0009] By adopting the above technical solution, since four control pieces are provided and four driving members are provided, one driving member is used to drive one control piece, so that the control of each control piece is independent of each other, thereby simplifying the transmission structure between the driving member and the control piece.

[0010] Optionally, the driving member is a motor, the control piece is provided with a rotating shaft, and the motor is in transmission connection with the rotating shaft to drive the control piece to rotate.

[0011] By adopting the above technical solution, when driving the control piece, the output shaft of the motor drives the rotating shaft to rotate, and then the rotating shaft drives the control piece to move, so that the control piece opens or closes the corresponding defrosting air outlet or air-conditioning air outlet.

[0012] Optionally, two control pieces are provided, one of the control pieces is arranged corresponding to one of the defrosting air outlets and one of the air-conditioning air outlets, and the other control piece is arranged corresponding to the other defrosting air outlet and the other air-conditioning air outlet, and the driving member is used to drive the control piece to swing between the defrosting air outlet and the air-conditioning air outlet.

[0013] By adopting the above technical solution, since two control pieces are provided, the number of control pieces is reduced, so as to reduce the production cost of the evaporator assembly, and at the same time, the number of driving members can be reduced to simplify the control program, ensure the working stability of the evaporator assembly, and reduce the failure rate of the evaporator assembly.

[0014] Optionally, each control piece has a connecting end and a swinging end opposite to the connecting end, and the connecting end is provided with a connecting shaft rotatably connected to the housing.

[0015] By adopting the above technical solution, when driving the control piece, the driving member drives the connecting shaft to rotate, and then the connecting shaft drives the connecting end to rotate, so that the swinging end rotates around the connecting shaft, thereby realizing that the control piece closes the defrosting air outlet or closes the air conditioner air outlet. Through the setting of the connecting shaft, the stability of the control piece during swinging is increased.

[0016] Optionally, the driving member includes a motor and four gears that are sequentially meshed and transmitted. The two gears located on the sides are respectively coaxially and fixedly connected to the two connecting shafts, and the output shaft of the motor is in transmission connection with one of the gears located in the middle.

[0017] By adopting the above technical solution, when opening or closing the defrosting air outlet, the motor is started. The output shaft of the motor drives one of the gears located in the middle to rotate, and then the other gears follow to rotate, so that the gears drive the control piece to rotate, thereby enabling the control piece to open or close the defrosting air outlet. Since one motor drives the movement of two control pieces through the transmission of multiple gears, the production cost of the evaporator assembly is reduced, and at the same time, the control degree of the evaporator assembly is simplified to ensure the stable operation of the evaporator assembly and reduce the failure rate of the evaporator assembly.

[0018] Optionally, the central axis of the defrosting air outlet is located obliquely above the central axis of the air conditioner air outlet.

[0019] By adopting the above technical solution, since the central axis of the defrosting air outlet is located obliquely above the central axis of the air conditioner air outlet, a larger defrosting air outlet and air conditioner air outlet can be opened in a limited area to ensure the defrosting efficiency of the front windshield and at the same time ensure the temperature adjustment efficiency of the cab; in addition, it can also make the gap between the defrosting air outlet and the air conditioner air outlet as large as possible to achieve the effect of facilitating the installation of the connecting pipeline, thereby reducing the assembly difficulty of the evaporator assembly.

[0020] Optionally, a wind guide cover for communicating with the defrosting opening on the instrument panel is provided at one end of the connecting pipeline away from the housing.

[0021] By adopting the above technical solution, the gas discharged from the defrosting air outlet enters the wind guide cover under the action of the connecting pipeline, so that the gas is blown onto the front windshield through the defrosting opening under the action of the wind guide cover, thereby enabling the gas to be discharged more evenly at the defrosting opening to improve the defrosting efficiency of the front windshield.

[0022] Optionally, a sealing layer is provided between the periphery of the wind guide cover and the instrument panel.

[0023] By adopting the above technical solution, since a sealing layer is provided between the peripheral side of the air guide cover and the instrument panel, the sealing performance between the air guide cover and the instrument panel is increased, so as to avoid the leakage of gas through the gap between the air guide cover and the instrument panel, thereby ensuring that more gas is discharged through the defrosting opening, and further ensuring the defrosting efficiency of the front windshield.

[0024] Optionally, connection parts for connecting with the instrument panel are provided on both opposite sides of the air guide cover.

[0025] By adopting the above technical solution, when fixing the air guide cover, only fasteners are needed to fixedly connect the connection part to the instrument panel. On the one hand, the connection stability between the air guide cover and the instrument panel is increased, and on the other hand, the fixing difficulty of the air guide cover is reduced, so as to improve the assembly efficiency of the evaporator assembly.

[0026] Due to the adoption of the above technical solution, the beneficial effects obtained by this application are as follows:

[0027] 1. The evaporator assembly in this application includes a housing, an evaporator core disposed inside the housing, and a connecting pipeline. The housing is provided with a defrosting air outlet and two air conditioning air outlets respectively located on both sides of the defrosting air outlet. There are two defrosting air outlets. The housing is provided with a control piece capable of closing the defrosting air outlet and the air conditioning air outlet, and a driving member for driving the movement of the control piece. Both the defrosting air outlet and the air conditioning air outlet have an open state and a closed state. When the defrosting air outlet is in the open state, the air conditioning air outlet is in the closed state. There are two connecting pipelines and they are arranged in one-to-one correspondence with the defrosting air outlets, thereby increasing the pressure of the gas discharged through the defrosting opening, so as to improve the defrosting efficiency of the front windshield, and thus reduce the time required to start the vehicle in cold weather, so as to improve the working efficiency of the engineering vehicle. In addition, since the air conditioning air outlet is in the closed state when the defrosting air outlet is in the open state, more gas is discharged through the defrosting air outlet and blown onto the front windshield when defrosting the front windshield, and at the same time, the pressure of the gas discharged through the defrosting opening can also be increased, so as to greatly improve the defrosting efficiency of the front windshield, and further improve the working efficiency of the engineering vehicle.

[0028] 2. There are four control pieces in this application. The four control pieces are respectively arranged corresponding to the two defrosting air outlets and the two air conditioning air outlets. There are four driving members and they are arranged in one-to-one correspondence with the control pieces. Then one driving member is used to drive one control piece, so that the control of each control piece is independent of each other, so as to simplify the transmission structure between the driving member and the control piece.

[0029] 3. The driving component in the present application is a motor, and the control plate is provided with a rotating shaft. The motor is connected to the rotating shaft to drive the control plate to rotate. When the control plate is driven, the output shaft of the motor drives the rotating shaft to rotate, and then the rotating shaft drives the control plate to move, so that the control plate opens or closes the corresponding defrost air outlet or air conditioning air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 This is a schematic structural diagram of the evaporator assembly described in one embodiment of the present application;

[0032] Figure 2 This is a partial structural schematic diagram of the evaporator assembly in one embodiment of the present application, mainly showing a state in which the control sheet blocks the air outlet of the air conditioner;

[0033] Figure 3 This is a partial structural schematic diagram of the evaporator assembly according to one embodiment of the present application, mainly showing a state in which the control plate blocks the defrost air outlet;

[0034] Figure 4 It is a schematic structural diagram of the air guide hood and the connecting pipeline in one embodiment of the present application.

[0035] Reference numerals:

[0036] 1. Shell; 11. Defrost air outlet; 12. Air conditioning air outlet; 2. Connecting pipe; 21. Air guide cover; 211. Connecting part; 3. Control plate; 31. Rotating shaft; 32. Connecting shaft; 4. Driving member; 41. Gear. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0039] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application.

[0040] In the present application, unless otherwise clearly specified and defined, terms such as "install", "connect", "join", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] Refer to Figures 1 to 4 , an evaporator assembly for an engineering vehicle is disclosed, which includes a housing 1, an evaporator core disposed inside the housing 1, and a connecting pipeline 2. The housing 1 is provided with a defrost air outlet 11 and two air conditioner air outlets 12 respectively located on both sides of the defrost air outlet 11. There are two defrost air outlets 11. The housing 1 is provided with a control piece 3 capable of closing the defrost air outlet 11 and the air conditioner air outlets 12 and a driving member 4 for driving the movement of the control piece 3. Both the defrost air outlet 11 and the air conditioner air outlets 12 have an open state and a closed state. When the defrost air outlet 11 is in the open state, the air conditioner air outlets 12 are in the closed state. There are two connecting pipelines 2 and they are arranged in one-to-one correspondence with the defrost air outlets 11.

[0043] It is understandable that when the defrost vent 11 is in the open state, the air conditioning vent 12 is in the closed state, and when the air conditioning vent 12 is in the open state, the defrost vent 11 is in the closed state, that is, the defrost vent 11 and the air conditioning vent 12 cannot be opened at the same time. The driving member 4 drives the control piece 3 to move the defrost vent 11 and the air conditioning vent 12 between the open state and the closed state.

[0044] Since the connecting pipe 2 is arranged in a one-to-one correspondence with the defrost air outlet 11 and there are two defrost air outlets 11, the pressure of the gas discharged through the defrost air outlet is increased to improve the defrosting efficiency of the front windshield, thereby reducing the time required to start the vehicle in cold weather and improving the working efficiency of the engineering vehicle. In addition, since the defrost air outlet 11 is in an open state and the air conditioning air outlet 12 is in a closed state, more gas is discharged through the defrost air outlet 11 and blown toward the front windshield when the front windshield is defrosted, and the pressure of the gas discharged through the defrost air outlet can be increased to greatly improve the defrosting efficiency of the front windshield, thereby further improving the working efficiency of the engineering vehicle.

[0045] The present application does not specifically limit the number of control sheets 3, and the control sheets 3 may adopt any one of the following embodiments:

[0046] Embodiment 1. In this embodiment, referring to Figure 1 There are four control sheets 3 , and the four control sheets 3 are respectively arranged corresponding to the two defrost air outlets 11 and the two air conditioning air outlets 12 . There are four driving members 4 , and they are arranged one by one corresponding to the control sheets 3 .

[0047] That is, one driving member 4 is used to drive one control plate 3, so that each control plate 3 can be driven individually, so as to simplify the transmission structure between the driving member 4 and the control plate 3, thereby reducing the production cost of the evaporator assembly.

[0048] In this embodiment, the structure of the driving member 4 is not specifically limited. Preferably, refer to Figure 1 The driving member 4 is a motor, and the control plate 3 is provided with a rotating shaft 31. The motor is transmission-connected with the rotating shaft 31 to drive the control plate 3 to rotate.

[0049] It can be understood that the rotating shaft 31 is fixedly connected to the control plate 3 , and the rotating shaft 31 and one diameter of the control plate 3 are arranged colinearly.

[0050] When the control plate 3 is driven, the output shaft of the motor drives the rotating shaft 31 to rotate, and then the rotating shaft 31 drives the control plate 3 to move, so that the control plate 3 opens or closes the corresponding defrost air outlet 11 or air conditioning air outlet 12.

[0051] In other embodiments, the driving member 4 may also be a pneumatic motor.

[0052] Embodiment 2: In this embodiment, referring to Figure 2 and Figure 3 , there are two control pieces 3. One of the control pieces 3 is arranged corresponding to one defrost air outlet 11 and one air-conditioning air outlet 12, and the other control piece 3 is arranged corresponding to the other defrost air outlet 11 and the other air-conditioning air outlet 12. The driving member 4 is used to drive the control piece 3 to swing between the defrost air outlet 11 and the air-conditioning air outlet 12.

[0053] It can be understood that the two defrost air outlets 11 and the two air-conditioning air outlets 12 are respectively divided into two groups. Each group includes one defrost air outlet 11 and one air-conditioning air outlet 12. The two control pieces 3 are respectively arranged corresponding to the two groups to respectively control the defrost air outlet 11 or the air-conditioning air outlet 12 of the two groups.

[0054] Since there are two control pieces 3, the number of control pieces 3 is reduced, so as to reduce the production cost of the evaporator assembly. At the same time, the number of driving members 4 can be reduced to simplify the control program, ensure the working stability of the evaporator assembly, and reduce the failure rate of the evaporator assembly.

[0055] Furthermore, referring to Figure 2 and Figure 3 , each control piece 3 has a connecting end and a swinging end opposite to the connecting end. The connecting end is provided with a connecting shaft 32 rotatably connected to the housing 1.

[0056] When driving the control piece 3, the driving member 4 drives the connecting shaft 32 to rotate, and then the connecting shaft 32 drives the connecting end to rotate, so that the swinging end rotates around the connecting shaft 32, thereby realizing that the control piece 3 closes the defrost air outlet 11 or closes the air-conditioning air outlet 12. Through the setting of the connecting shaft 32, the stability of the control piece 3 during swinging is increased.

[0057] In this embodiment, the structure of the driving member 4 is not specifically limited. Preferably, referring to Figure 2 and Figure 3 , the driving member 4 includes a motor and four gears 41 that are sequentially meshed and transmitted. The two gears 41 located on the side are respectively coaxially and fixedly connected to the two connecting shafts 32, and the output shaft of the motor is in transmission connection with one of the gears 41 located in the middle.

[0058] That is to say, in this embodiment, one motor drives the two control pieces 3 to move simultaneously.

[0059] When the defrost air outlet 11 is opened or closed, the motor is started, and the output shaft of the motor drives one of the gears 41 located in the middle to rotate, and then the other gears 41 follow the rotation, so that the gear 41 drives the control plate 3 to rotate, so that the control plate 3 opens or closes the defrost air outlet 11. Since one motor drives two control plates 3 to move through multiple gears 41, the production cost of the evaporator assembly is reduced, and the control degree of the evaporator assembly is simplified to ensure the stable operation of the evaporator assembly and reduce the failure rate of the evaporator assembly.

[0060] In other embodiments, the driving member 4 may further include two motors, which are respectively connected to the connecting shaft 32 in a transmission manner. That is, the gear 41 is eliminated, and each motor is used to drive the corresponding control plate 3.

[0061] In a preferred embodiment, referring to Figure 1 The central axis of the defrost air outlet 11 is located obliquely above the central axis of the air-conditioning air outlet 12, so that larger defrost air outlets 11 and air-conditioning air outlets 12 can be opened in a limited area to ensure the defrosting efficiency of the front windshield and the temperature control efficiency of the cab; in addition, a larger gap can be made between the defrost air outlet 11 and the air-conditioning air outlet 12 as much as possible to facilitate the installation of the connecting pipe, thereby reducing the difficulty of assembling the evaporator assembly.

[0062] In a preferred embodiment, referring to Figure 4 An end of the connecting pipe 2 away from the shell 1 is provided with an air guide cover 21 for connecting with the defrost port on the instrument panel.

[0063] Specifically, the gas discharged through the defrost air outlet 11 enters the wind guide hood 21 under the action of the connecting pipe 2, so that the gas is blown toward the front windshield through the defrost outlet under the action of the wind guide hood 21, so that the gas is discharged more evenly at the defrost outlet, thereby improving the defrosting efficiency of the front windshield.

[0064] Further, see Figure 4 A sealing layer is provided between the peripheral side of the air guide cover 21 and the instrument panel, thereby increasing the sealing between the air guide cover 21 and the instrument panel to avoid gas leakage through the gap between the air guide cover 21 and the instrument panel, thereby ensuring that more gas is discharged through the defrost port, thereby ensuring the defrosting efficiency of the front windshield.

[0065] The present application does not specifically limit the method for forming the sealing layer. Preferably, a sealing ring is provided between the air guide cover 21 and the instrument panel, and the sealing ring is provided along the circumference of the air guide cover 21 to form a sealing layer. In other implementation examples, a sealant is applied between the air guide cover 21 and the instrument panel, and the sealant solidifies to form a sealing layer.

[0066] Further, referring to Figure 4 , connection portions 211 for connecting to the instrument panel are provided on both opposite sides of the air deflector 21.

[0067] When fixing the air deflector 21, it is only necessary to use fasteners to fixedly connect the connection portion 211 to the instrument panel. On the one hand, the connection stability between the air deflector 21 and the instrument panel is increased, and on the other hand, the difficulty of fixing the air deflector 21 is reduced, so as to improve the assembly efficiency of the evaporator assembly.

[0068] The structure of the connection portion 211 in this application is not specifically limited. Preferably, the connection portion 211 is a sheet-like structure extending outward from the air deflector 21, and the sheet-like structure has through holes for screws to pass through, so as to achieve the effect of facilitating the fixing of the air deflector 21, and at the same time increase the connection stability between the air deflector 21 and the instrument panel. In other embodiments, the connection portion 211 can also be a block-like structure provided on the side of the air deflector 21.

[0069] What is not described in this application can be implemented by adopting or referring to the existing technology.

[0070] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.

[0071] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. An evaporator assembly for an engineering vehicle, characterized in that: The invention comprises a shell (1), an evaporator core arranged inside the shell (1), and a connecting pipe (2); the shell (1) is provided with a defrost air outlet (11) and two air conditioning air outlets (12) respectively located on both sides of the defrost air outlet (11); the defrost air outlet (11) is provided with two, the shell (1) is provided with a control plate (3) capable of closing the defrost air outlet (11) and the air conditioning air outlet (12), and a driving member (4) for driving the control plate (3) to move; the defrost air outlet (11) and the air conditioning air outlet (12) both have an open state and a closed state; when the defrost air outlet (11) is in the open state, the air conditioning air outlet (12) is in the closed state; and the connecting pipe (2) is provided with two and is arranged one-to-one with the defrost air outlet (11).

2. The evaporator assembly for an engineering vehicle according to claim 1, characterized in that: Four control plates (3) are provided, and the four control plates (3) are respectively provided corresponding to the two defrosting air outlets (11) and the two air conditioning air outlets (12); four driving members (4) are provided and are provided in one-to-one correspondence with the control plates (3).

3. The evaporator assembly for an engineering vehicle according to claim 2, characterized in that: The driving member (4) is a motor, the control plate (3) is provided with a rotating shaft (31), and the motor is drivingly connected to the rotating shaft (31) to drive the control plate (3) to rotate.

4. The evaporator assembly for an engineering vehicle according to claim 1, characterized in that: Two control plates (3) are provided, one of the control plates (3) is provided corresponding to one of the defrost air outlets (11) and one of the air-conditioning air outlets (12), and the other control plate (3) is provided corresponding to another of the defrost air outlets (11) and another of the air-conditioning air outlets (12), and the driving member (4) is used to drive the control plate (3) to swing between the defrost air outlet (11) and the air-conditioning air outlet (12).

5. The evaporator assembly for an engineering vehicle according to claim 4, characterized in that: Each of the control plates (3) has a connecting end and a swinging end opposite to the connecting end, and the connecting end is provided with a connecting shaft (32) rotatably connected to the housing (1).

6. The evaporator assembly for an engineering vehicle according to claim 5, characterized in that: The driving member (4) comprises a motor and four gears (41) meshed in sequence for transmission, two of the gears (41) located on the sides are coaxially fixedly connected to the two connecting shafts (32) respectively, and the output shaft of the motor is transmission-connected to one of the gears (41) located in the middle.

7. The evaporator assembly for an engineering vehicle according to claim 1, characterized in that: The central axis of the defrost air outlet (11) is located obliquely above the central axis of the air conditioning air outlet (12).

8. The evaporator assembly for an engineering vehicle according to claim 1, characterized in that: An end of the communication pipeline (2) away from the housing (1) is provided with an air guide cover (21) for communicating with a defrost port on the instrument panel.

9. The evaporator assembly for an engineering vehicle according to claim 8, characterized in that: A sealing layer is provided between the peripheral side of the air guide cover (21) and the instrument panel.

10. The evaporator assembly for an engineering vehicle according to claim 8, characterized in that: The opposite sides of the air guide cover (21) are both provided with connection parts (211) for connecting to the instrument panel.

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