A hybrid wind evaporator system and harvester

Abstract

The utility model provides a kind of mixed wind type evaporator system and harvester.The utility model provides a kind of mixed wind type evaporator system, comprising: air inlet cavity, refrigeration cavity, heating cavity and mixed wind cavity, air inlet cavity is connected with refrigeration cavity, refrigeration cavity and heating cavity are connected with mixed wind cavity, mixed wind cavity is between refrigeration cavity and heating cavity;Refrigeration cavity is installed with refrigeration core body, heating cavity is installed with heating core body, and refrigeration core body and heating core body are all inclined to set.Refrigeration core body and heating core body are all inclined to place, can reduce the height of evaporator whole under the condition of satisfying performance, and it is favorable to condensate water drainage, it is favorable to the flow direction of wind, it is favorable to the flow direction of wind, reduce wind resistance.Using decentralized layout, can make full use of top space, utilize cab left and right space, do not occupy cab front and rear space, provide favorable advantage for cab internal space, and whole evaporator air outlet distribution is more reasonable.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning evaporator technology, and in particular to a mixed-air evaporator system and a harvester. Background Technology

[0002] In the application of harvesting machinery cabs, the working environment is complex and harsh, generally dusty, with a lot of wheat chaff, high temperature, and humidity. As the main agricultural power machinery, the cab of the harvester is the main working area for the personnel, so the comfort and health of the personnel are particularly important. In the high temperature and dusty environment, the cab has a large glass area and a high heat load, which causes the temperature inside the cab to drop. Therefore, the air conditioning evaporator plays a crucial role in the personnel cab.

[0003] The existing harvester air conditioning evaporator design is too tall, which affects the passenger space inside the cab. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hybrid air evaporator system and a harvester, addressing the shortcomings of the existing technology.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A mixed-air evaporator system includes: an air inlet cavity, a cooling cavity, a heating cavity, and a mixed-air cavity for installation on the roof of a driver's cab. The air inlet cavity is connected to the cooling cavity, and both the cooling cavity and the heating cavity are connected to the mixed-air cavity. The mixed-air cavity is located between the cooling cavity and the heating cavity. A cooling core is installed in the cooling cavity, and a heating core is installed in the heating cavity. Both the cooling core and the heating core are inclined.

[0006] The beneficial effects of adopting this utility model's technical solution are as follows: The refrigeration core is placed at an angle, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, and helps guide airflow, reducing wind resistance. The heating core is placed at the end of the evaporator system, also at an angle, which reduces the overall height of the evaporator while meeting performance requirements, and helps guide airflow, reducing wind resistance. The distributed layout, consisting of an air inlet chamber, a refrigeration chamber, a heating chamber, and a mixing chamber, allows for full utilization of overhead and lateral space in the cab, without occupying front and rear space, thus providing a significant advantage for the cab's interior space and resulting in a more rational distribution of airflow from the entire evaporator.

[0007] Furthermore, the air inlet cavity includes: a blower, a blower volute, and an outer housing. The blower is rotatably installed in the blower volute, and the blower volute is detachably connected to the outer housing. The outer housing is provided with a fresh air inlet, and a fresh air inlet cavity is provided between the fresh air inlet and the blower. The blower volute is provided with a return air inlet.

[0008] The beneficial effects of adopting the above-mentioned further technical solutions are: using an independent blower motor, an independent conformal split design for the blower volute, and an integrated design of the blower volute and the fixed housing.

[0009] Furthermore, the blower casing includes an upper blower casing and a lower blower casing. The upper blower casing is installed on top of the lower blower casing, and the blower is rotatably installed between the upper blower casing and the lower blower casing. The ratio of the cross-sectional area of ​​the fresh air inlet to the cross-sectional area of ​​the return air inlet is 1:4, and filter elements are installed at both the fresh air inlet and the return air inlet.

[0010] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: An independent blower motor is used, with the blower volute featuring an independent, conformal, split design, and the blower volute integrated with the fixed housing. The ratio of fresh air to return air intake is 1:4, and the surface velocity of the fresh air intake is reduced by increasing its cross-sectional area. Achieving a 1:4 ratio through the intake area better balances the fresh air needs of the occupants in the cab and the performance of the evaporator. The intake filter element is enlarged, increasing the air intake area and reducing the surface velocity of the filter element.

[0011] Furthermore, the tilt angle of the cooling core relative to the horizontal line is in the range of 27°-28°, and the tilt angle of the heating core relative to the horizontal line is in the range of 24°-25°.

[0012] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: The refrigeration core is placed at an angle ranging from 27° to 28°, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, guides airflow, and reduces wind resistance. The heating core is placed at the end of the evaporator system at an angle ranging from 24° to 25°, which also reduces the overall height of the evaporator while meeting performance requirements, and guides airflow, reducing wind resistance.

[0013] Furthermore, an indoor temperature sensor is installed on the air inlet cavity, a defrost temperature sensor is installed on the cooling cavity, and a controller is installed on the heating cavity. Both the indoor temperature sensor and the defrost temperature sensor are connected to the controller. The controller is connected to a blower, a defrost damper actuator, a mixing damper actuator, and a compressor.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: it can detect the temperature of the cab and automatically adjust the temperature of the passenger compartment to achieve comfort and energy saving. The indoor temperature sensor is located at the return air inlet cavity, the defrost temperature sensor is located on the surface of the refrigeration core, and multiple sensors are connected to the controller at the end of the evaporator to jointly control the airflow of the blower, the action of the defrost damper, the action of the mixing damper, and the operation of the compressor to achieve automatic temperature control.

[0015] Furthermore, an ambient temperature sensor is installed on the air inlet cavity, and an outlet air temperature sensor is installed on the mixing cavity. Both the ambient temperature sensor and the outlet air temperature sensor are connected to the controller.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: it can detect the ambient temperature and the cab temperature to automatically adjust the temperature of the passenger compartment, achieving comfort and energy saving. The ambient temperature sensor is located at the fresh air inlet, the indoor temperature sensor is located at the return air inlet, the defrost temperature sensor is located on the surface of the refrigeration core, and the outlet air temperature sensor is located at the outlet of the entire evaporator system. These four sensors are connected to the controller at the end of the evaporator, jointly controlling the blower's airflow, the defrost damper's actuator, the mixing damper's actuator, and the compressor's operation to achieve automatic temperature control. By using the four sensors (ambient temperature, return air temperature, outlet air temperature, and defrost temperature) and the controller to jointly control the mixing damper, the treated cold air and treated hot air are mixed in a certain proportion according to the set temperature, achieving precise temperature control, ensuring passenger comfort, and achieving energy saving.

[0017] Furthermore, an air outlet is provided on one side of the mixing air cavity, and a defrosting and defogging air outlet is provided at the bottom of the mixing air cavity. The heating cavity has an upper and lower layered structure.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Placing the defrost vent on the lower side of the evaporator and controlling defrosting through a damper results in low wind resistance and a more uniform airflow velocity at the defrost vent, which is more conducive to defrosting and demisting. When not needed, it can be closed by control to increase the front airflow. This reduces the length of the air outlet duct, decreases airflow resistance, and is more conducive to airflow. The evaporator's air outlet is located at the front of the evaporator, while the defrost and demisting air outlet is at the bottom. The mode switching is achieved by controlling the damper actuator through a controller. The evaporator's end shell adopts a layered design. After the air passes through the cooling core, it is regulated by a mixing damper in conjunction with the heating core to achieve precise temperature regulation of the entire evaporator's outlet air, enabling gentle cooling and heating, so that the occupants in the cab do not experience sudden temperature changes.

[0019] Furthermore, the mixing air cavity is equipped with a defrosting damper actuator and a mixing damper actuator.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Multiple sensors are connected to the controller at the end of the evaporator to jointly control the airflow of the blower, the operation of the defrost damper, the operation of the mixing damper, and the operation of the compressor, thereby achieving automatic temperature control. By using four sensors—ambient temperature sensor, return air temperature sensor, outlet air temperature sensor, and defrost temperature sensor—along with the controller, the mixing damper is jointly controlled, allowing the treated cold air and treated hot air to be mixed in a certain proportion according to the set temperature. This enables precise temperature control, ensuring the comfort of passengers and achieving energy-saving effects.

[0021] Further, the defrost damper actuation structure includes: a defrost housing, a defrost damper motor, a defrost damper, a first rotating shaft, a first connecting rod, and a first lever. The defrost damper motor is mounted on the defrost housing, the defrost damper is mounted on the first rotating shaft, the first rotating shaft is rotatably mounted on the defrost housing, one end of the first lever is connected to the first rotating shaft, the first connecting rod is provided with a first sliding groove, the first connecting rod is connected to the output shaft of the defrost damper motor, and the other end of the first lever is slidably mounted in the first sliding groove; the mixing damper actuation structure includes... The system comprises a mixing air housing, a mixing air damper motor, a mixing air damper, a second rotating shaft, a second connecting rod, and a second lever. The mixing air damper motor is mounted on the mixing air housing, the mixing air damper is mounted on the second rotating shaft, the second rotating shaft is rotatably mounted on the mixing air housing, one end of the second lever is connected to the second rotating shaft, the second connecting rod is provided with a second sliding groove, the second connecting rod is connected to the output shaft of the mixing air damper motor, and the other end of the second lever is slidably mounted in the second sliding groove; or, the second rotating shaft is drively connected to the output shaft of the mixing air damper motor.

[0022] The beneficial effect of adopting the above-mentioned further technical solution is that the defrosting and defogging damper actuator and the damper actuator motor are connected by a multi-stage linkage, which can achieve precise directional control.

[0023] In addition, this utility model also provides a harvester, including the above-described mixed-air evaporator system.

[0024] The beneficial effects of adopting this utility model's technical solution are as follows: The refrigeration core is placed at an angle, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, and helps guide airflow, reducing wind resistance. The heating core is placed at the end of the evaporator system, also at an angle, which reduces the overall height of the evaporator while meeting performance requirements, and helps guide airflow, reducing wind resistance. The distributed layout, consisting of an air inlet chamber, a refrigeration chamber, a heating chamber, and a mixing chamber, allows for full utilization of overhead and lateral space in the cab, without occupying front and rear space, thus providing a significant advantage for the cab's interior space and resulting in a more rational distribution of airflow from the entire evaporator.

[0025] The advantages of this invention in its additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is one of the structural schematic diagrams of a mixed-air evaporator system provided in an embodiment of the present invention.

[0028] Figure 2 The second schematic diagram of the structure of the mixed-air evaporator system provided in this embodiment of the present invention.

[0029] Figure 3 The third schematic diagram of the structure of the mixed-air evaporator system provided in this embodiment of the present invention.

[0030] Figure 4 This is one of the structural schematic diagrams of the air inlet cavity provided in the embodiment of this utility model.

[0031] Figure 5 This is the second schematic diagram of the air inlet cavity provided in an embodiment of the present utility model.

[0032] Figure 6 This is a schematic diagram of the structure of the mixing air cavity provided in an embodiment of the present invention.

[0033] Figure 7 The fourth schematic diagram of the structure of the mixed-air evaporator system provided in this embodiment of the utility model.

[0034] Explanation of reference numerals: 1. Air inlet cavity; 2. Cooling cavity; 3. Heating cavity; 4. Mixing cavity; 5. Cooling core; 6. Heating core; 7. Blower; 8. Blower volute; 9. Outer casing; 10. Fresh air inlet; 11. Fresh air inlet cavity; 12. Return air inlet; 13. Upper blower volute; 14. Lower blower volute; 15. Indoor temperature sensor; 16. Defrost temperature sensor; 17. Controller; 18. Ambient temperature sensor; 19. Outlet air temperature sensor; 20. Outlet; 21. Defrost damper motor; 22. Defrost damper; 23. First connecting rod; 24. Mixing damper motor; 25. Mixing damper; 26. Defrost / demisting outlet; 27. Thermal expansion valve. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] like Figures 1 to 7 As shown, this utility model embodiment provides a mixed-air evaporator system, including: an air inlet cavity 1, a cooling cavity 2, a heating cavity 3, and a mixing air cavity 4 for installation on the roof of a driver's cab. The air inlet cavity 1 is connected to the cooling cavity 2, and both the cooling cavity 2 and the heating cavity 3 are connected to the mixing air cavity 4. The mixing air cavity 4 is located between the cooling cavity 2 and the heating cavity 3. A cooling core 5 is installed in the cooling cavity 2, and a heating core 6 is installed in the heating cavity 3. Both the cooling core 5 and the heating core 6 are inclined.

[0042] The beneficial effects of adopting this utility model's technical solution are as follows: The refrigeration core is placed at an angle, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, and helps guide airflow, reducing wind resistance. The heating core is placed at the end of the evaporator system, also at an angle, which reduces the overall height of the evaporator while meeting performance requirements, and helps guide airflow, reducing wind resistance. The distributed layout, consisting of an air inlet chamber, a refrigeration chamber, a heating chamber, and a mixing chamber, allows for full utilization of overhead and lateral space in the cab, without occupying front and rear space, thus providing a significant advantage for the cab's interior space and resulting in a more rational distribution of airflow from the entire evaporator.

[0043] A thermostatic expansion valve 27 can be installed on the refrigeration chamber 2.

[0044] The air inlet cavity, cooling cavity, heating cavity, and mixing cavity of the mixed-air evaporator system can be symmetrically distributed.

[0045] Figure 7In the diagram, the arrow on the cooling core 5 indicates incoming air, specifically hot air, introduced from the outside air intake 10 (external hot air in external circulation) and / or the return air intake 12 (internal hot air in the driver's cab in internal circulation). The arrow to the right of the cooling core 5 indicates cold air (cold air generated after the outside hot air and / or the hot air inside the driver's cab are cooled by the cooling core 5). The arrow below the mixing damper 25 indicates cold air (cold air generated after cooling by the cooling core 5, and / or mixed cold air formed by mixing the cold air generated after cooling by the cooling core 5 with the hot air generated after heating by the heating core 6). The arrow to the right of the mixing damper 25 indicates hot air (outside air introduced from the fresh air intake 10 and / or the return air intake 12 introduced into the driver's cab). The two arrows below the heating core 6 indicate hot air (hot air generated after the outside hot air and / or the hot air inside the driver's cab are heated by the heating core 6). The long arrow at defrost damper 22 represents defrosting and demisting air outlet, which is cold air. The short arrow at air outlet 20 represents evaporator air outlet (cold air generated by cooling core 5, and / or mixed cold air formed by mixing cold air generated by cooling core 5 and hot air generated by heating core 6), which is cold air.

[0046] Figure 7 In the middle, the cold air generated by the cooling core 5 after cooling and the hot air generated by the heating core 6 after heating are both discharged from the air outlet 20.

[0047] Figure 7 During operation, outside air is introduced through the fresh air inlet 10 and / or the return air inlet 12, which in turn cools the air inside the cab. After being cooled by the cooling core 5, cold air and some residual hot air are generated (part of the outside air introduced through the fresh air inlet 10 and / or the return air inlet 12 is cooled by the cooling core 5, while the other part remains hot air). The cold air generated by the cooling core 5 is directly exhausted through the air outlet 20.

[0048] And / or, during operation, outside air is introduced through the fresh air inlet 10, and / or the air inside the driver's cab is introduced through the return air inlet 12. After being cooled by the cooling core 5, cold air and some residual hot air are generated (part of the outside air introduced through the fresh air inlet 10 and / or the air inside the driver's cab introduced through the return air inlet 12 is cooled by the cooling core 5, and the other part remains hot air). The cold air generated by the cooling core 5 is directly exhausted through the air outlet 20. Some residual hot air and some of the cold air generated by the cooling core 5 are heated by the heating core 6 and enter the mixing air chamber from the bottom cavity of the heating chamber 3. After mixing with the cold air generated by the cooling core 5, the mixture is exhausted through the air outlet 20.

[0049] like Figure 4 and Figure 5As shown, the air inlet cavity 1 further includes: a blower 7, a blower volute 8, and an outer housing 9. The blower 7 is rotatably installed in the blower volute 8, and the blower volute 8 is detachably connected to the outer housing 9. The outer housing 9 is provided with a fresh air inlet 10, and a fresh air inlet cavity 11 is provided between the fresh air inlet 10 and the blower 7. The blower volute 8 is provided with a return air inlet 12.

[0050] The beneficial effects of adopting the above-mentioned further technical solutions are: using an independent blower motor, an independent conformal split design for the blower volute, and an integrated design of the blower volute and the fixed housing.

[0051] Among them, the fresh air inlet 10 introduces outside air (hot air from outside the driver's cab in external circulation), and / or the return air inlet 12 introduces inside air (hot air from inside the driver's cab in internal circulation).

[0052] like Figure 4 and Figure 5 As shown, the blower volute 8 further includes an upper blower volute 13 and a lower blower volute 14. The upper blower volute 13 is installed on top of the lower blower volute 14, and the blower 7 is rotatably installed between the upper blower volute 13 and the lower blower volute 14. The ratio of the cross-sectional area of ​​the fresh air inlet 10 to the cross-sectional area of ​​the return air inlet 12 is 1:4, and filter elements are installed at both the fresh air inlet 10 and the return air inlet 12.

[0053] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: An independent blower motor is used, with the blower volute featuring an independent, conformal, split design, and the blower volute integrated with the fixed housing. The ratio of fresh air to return air intake is 1:4, and the surface velocity of the fresh air intake is reduced by increasing its cross-sectional area. Achieving a 1:4 ratio through the intake area better balances the fresh air needs of the occupants in the cab and the performance of the evaporator. The intake filter element is enlarged, increasing the air intake area and reducing the surface velocity of the filter element.

[0054] like Figures 1 to 7 As shown, the tilt angle of the cooling core 5 relative to the horizontal line is in the range of 27°-28°, and the tilt angle of the heating core 6 relative to the horizontal line is in the range of 24°-25°.

[0055] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: The refrigeration core is placed at an angle ranging from 27° to 28°, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, guides airflow, and reduces wind resistance. The heating core is placed at the end of the evaporator system at an angle ranging from 24° to 25°, which also reduces the overall height of the evaporator while meeting performance requirements, and guides airflow, reducing wind resistance.

[0056] Preferably, the angle of inclination of the cooling core 5 relative to the horizontal line is 27.5°, and the angle of inclination of the heating core 6 relative to the horizontal line is 24.7°.

[0057] like Figures 1 to 7 As shown, an indoor temperature sensor 15 is installed on the air inlet cavity 1, a defrost temperature sensor 16 is installed on the cooling cavity 2, and a controller 17 is installed on the heating cavity 3. The indoor temperature sensor 15 and the defrost temperature sensor 16 are both connected to the controller 17. The controller 17 is connected to a blower 7, a defrost damper actuator, a mixing damper actuator, and a compressor.

[0058] The beneficial effects of adopting the above-mentioned further technical solution are: it can detect the temperature of the cab and automatically adjust the temperature of the passenger compartment to achieve comfort and energy saving. The indoor temperature sensor is located at the return air inlet cavity, the defrost temperature sensor is located on the surface of the refrigeration core, and multiple sensors are connected to the controller at the end of the evaporator to jointly control the airflow of the blower, the action of the defrost damper, the action of the mixing damper, and the operation of the compressor to achieve automatic temperature control.

[0059] It should be noted that the acquisition, analysis, calculation, control, and processing methods of the controller are all existing technologies. Those skilled in the art can easily conceive of how to program and implement them based on actual needs, so they will not be elaborated here.

[0060] Temperature control is achieved through the combined control of an outdoor temperature sensor (ambient temperature sensor), an indoor temperature sensor, and a supply air temperature sensor (outlet air temperature sensor), with the controller adjusting the angle of the damper actuator.

[0061] like Figures 1 to 7 As shown, an ambient temperature sensor 18 is installed on the air inlet cavity 1, and an air outlet temperature sensor 19 is installed on the mixing air cavity 4. Both the ambient temperature sensor 18 and the air outlet temperature sensor 19 are connected to the controller 17.

[0062] The beneficial effects of adopting the above-mentioned further technical solution are: it can detect the ambient temperature and the cab temperature to automatically adjust the temperature of the passenger compartment, achieving comfort and energy saving. The ambient temperature sensor is located at the fresh air inlet, the indoor temperature sensor is located at the return air inlet, the defrost temperature sensor is located on the surface of the refrigeration core, and the outlet air temperature sensor is located at the outlet of the entire evaporator system. These four sensors are connected to the controller at the end of the evaporator, jointly controlling the blower's airflow, the defrost damper's actuator, the mixing damper's actuator, and the compressor's operation to achieve automatic temperature control. By using the four sensors (ambient temperature, return air temperature, outlet air temperature, and defrost temperature) and the controller to jointly control the mixing damper, the treated cold air and treated hot air are mixed in a certain proportion according to the set temperature, achieving precise temperature control, ensuring passenger comfort, and achieving energy saving.

[0063] Users can disable the outlet air temperature sensor and the fresh air temperature sensor (ambient temperature sensor) according to their actual needs.

[0064] This utility model provides a mixed-air evaporator system, which is an evaporator mechanism that drives an air mixing damper by detecting temperature. It can detect the ambient temperature and the cab temperature to automatically adjust the temperature of the passenger compartment in the cab, achieving the purpose of comfort and energy saving.

[0065] like Figures 1 to 7 As shown, further, an air outlet 20 is provided on one side of the mixing air cavity 4, and a defrost and defogging air outlet 26 is provided at the bottom of the mixing air cavity 4. The heating cavity 3 has an upper and lower layered structure.

[0066] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Placing the defrost vent on the lower side of the evaporator and controlling defrosting through a damper results in low wind resistance and a more uniform airflow velocity at the defrost vent, which is more conducive to defrosting and demisting. When not needed, it can be closed by control to increase the front airflow. This reduces the length of the air outlet duct, decreases airflow resistance, and is more conducive to airflow. The evaporator's air outlet is located at the front of the evaporator, while the defrost and demisting air outlet is at the bottom. The mode switching is achieved by controlling the damper actuator through a controller. The evaporator's end shell adopts a layered design. After the air passes through the cooling core, it is regulated by a mixing damper in conjunction with the heating core to achieve precise temperature regulation of the entire evaporator's outlet air, enabling gentle cooling and heating, so that the occupants in the cab do not experience sudden temperature changes.

[0067] The mixing damper 25 can be used to regulate the airflow of the cold air generated after the cooling core 5 is cooled, and part of the residual hot air (the outside air introduced by the fresh air inlet 10 and / or the air introduced into the cab by the return air inlet 12 is partly cooled by the cooling core 5 and partly remains hot air).

[0068] Furthermore, the mixing air cavity 4 is equipped with a defrosting damper actuator and a mixing damper actuator.

[0069] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Multiple sensors are connected to the controller at the end of the evaporator to jointly control the airflow of the blower, the operation of the defrost damper, the operation of the mixing damper, and the operation of the compressor, thereby achieving automatic temperature control. By using four sensors—ambient temperature sensor, return air temperature sensor, outlet air temperature sensor, and defrost temperature sensor—along with the controller, the mixing damper is jointly controlled, allowing the treated cold air and treated hot air to be mixed in a certain proportion according to the set temperature. This enables precise temperature control, ensuring the comfort of passengers and achieving energy-saving effects.

[0070] like Figures 1 to 7 As shown, further, the defrost damper actuation structure includes: a defrost housing, a defrost damper motor 21, a defrost damper 22, a first rotating shaft, a first connecting rod 23, and a first lever. The defrost damper motor 21 is mounted on the defrost housing, the defrost damper 22 is mounted on the first rotating shaft, the first rotating shaft is rotatably mounted on the defrost housing, one end of the first lever is connected to the first rotating shaft, the first connecting rod 23 is provided with a first sliding groove, the first connecting rod 23 is connected to the output shaft of the defrost damper motor 21, and the other end of the first lever is slidably mounted in the first sliding groove; the mixing damper actuation... The structure includes: a mixing air housing, a mixing air damper motor 24, a mixing air damper 25, a second rotating shaft, a second connecting rod, and a second lever. The mixing air damper motor 24 is mounted on the mixing air housing, the mixing air damper 25 is mounted on the second rotating shaft, the second rotating shaft is rotatably mounted on the mixing air housing, one end of the second lever is connected to the second rotating shaft, the second connecting rod is provided with a second sliding groove, the second connecting rod is connected to the output shaft of the mixing air damper motor 24, and the other end of the second lever is slidably mounted in the second sliding groove; or, the second rotating shaft is drively connected to the output shaft of the mixing air damper motor 24.

[0071] The beneficial effect of adopting the above-mentioned further technical solution is that the defrosting and defogging damper actuator and the damper actuator motor are connected by a multi-stage linkage, which can achieve precise directional control.

[0072] 1. The evaporator mechanism (mixed-air evaporator system) adopts a decentralized layout, which can be divided into an air inlet chamber, a cooling chamber, a heating chamber, and a mixing chamber. This arrangement can make full use of the overhead space when placed in the cab, providing a favorable advantage for the interior space of the cab, and the air distribution of the entire evaporator is more reasonable. Together, they achieve temperature control, providing control and power for the cab temperature. The mixed-air evaporator system can be installed on the top of the cab.

[0073] 2. Utilizing an independent blower motor (blower), the blower volute features an independent, custom-designed, split design, while the upper volute and the fixed housing (outer housing) are integrated. The independent, custom design allows for a redesigned volute to fit the vehicle's overall structure, resulting in more even airflow and space savings. The upper volute and the fixed housing (outer housing) are detachably connected.

[0074] 3. The ratio of fresh air to return air intake is 1:4. The fresh air intake reduces the surface velocity by increasing its cross-sectional area. This 1:4 ratio, achieved through the intake area, better balances the fresh air needs of the occupants in the driver's cab with evaporator performance. The enlarged intake filter increases the air intake area, reducing the surface velocity of the filter.

[0075] 4. The refrigeration core is placed at an angle of 27.5°. This reduces the overall height of the evaporator while still meeting performance requirements, facilitates condensate drainage, guides airflow, and reduces wind resistance. The angle of inclination is measured relative to the horizontal line.

[0076] 5. The heating core is placed at the end of the evaporator system (mixed-air evaporator system) at an angle of 24.7°. This reduces the overall height of the evaporator while meeting performance requirements and also helps guide airflow and reduce wind resistance. The angle of inclination is measured relative to the horizontal line.

[0077] 6. The ambient temperature sensor is located at the fresh air inlet cavity, the indoor temperature sensor is located at the return air inlet cavity, the defrost temperature sensor is located on the surface of the refrigeration core, and the outlet air temperature sensor is located at the outlet of the entire evaporator system. These four sensors are connected to the controller at the end of the evaporator to jointly control the blower's airflow, the defrost damper's actuation mechanism, the mixing damper's actuation mechanism, and the compressor's operation, thereby achieving automatic temperature control. Temperature data is collected by each temperature sensor, and the temperature parameters are compared with the data in the program to analyze which actions to execute. All actions are pre-programmed and fixed.

[0078] 7. The air outlet of the evaporator mechanism (mixed-air evaporator system) is located at the front of the evaporator, while the defrost and demisting air outlet is located at the bottom of the evaporator. This reduces the length of the air outlet duct, decreases airflow resistance, and facilitates airflow. The mode switching is achieved by controlling the damper actuator through a controller.

[0079] 8. The defrost and defogging damper actuator and the damper motor (defrost damper motor) are connected by a multi-stage linkage, enabling precise directional control. The damper actuator can be a directly adopted damper actuator from existing technology.

[0080] 9. The evaporator terminal shell (heating chamber) adopts an upper and lower layered design. This allows for gentle cooling and heating, ensuring that the occupants in the cab do not experience sudden temperature changes. After passing through the cooling core, the air is regulated by a mixing damper in conjunction with the heating core to achieve precise temperature control of the entire evaporator outlet air.

[0081] The existing harvester evaporator is placed on the front of the cab roof, which is simple in structure but too thick and affects the interior ceiling space of the cab. This utility model embodiment adopts a distributed arrangement, utilizing the left and right spaces of the cab without occupying the front and rear spaces. The various parts form the evaporator as a whole, which is assembled on the roof of the cab, located at the front of the cab roof.

[0082] Existing harvester evaporators have only one air outlet, which simultaneously handles defrosting, demisting, and front airflow. This makes the air duct layout difficult, and the entire air duct assembly has a high wind resistance coefficient. Since it is always open, the defrosting and demisting effect is not obvious. In this embodiment of the utility model, the defrosting air outlet (defrosting and demisting air outlet) is placed on the lower side of the evaporator, and defrosting is controlled by a damper (defrosting damper). The wind resistance is low, and the air velocity of the defrosting air outlet (defrosting and demisting air outlet) is more uniform, which is more conducive to defrosting and demisting. When not needed, it can be closed by control to increase the front airflow.

[0083] Current combine harvester evaporators employ simple and imprecise temperature control, primarily relying on electrically controlled water valves for temperature regulation. This approach suffers from significant temperature control deviations, leading to fluctuating temperatures. Furthermore, existing technology lacks a damper actuator and the ability to control this mode; it's a normally open structure, relying solely on defrost temperature sensors for temperature control. This results in large temperature deviations within the cab, hindering precise control. This invention adds a damper actuator and utilizes four sensors—ambient temperature, return air temperature, outlet air temperature, and defrost temperature—along with a controller to jointly control the mixing damper. This allows treated cold and hot air to be mixed in a specific ratio according to a set temperature, achieving precise temperature control, ensuring passenger comfort, and resulting in energy savings.

[0084] In addition, this utility model also provides a harvester, including the above-described mixed-air evaporator system.

[0085] The beneficial effects of adopting this utility model's technical solution are as follows: The refrigeration core is placed at an angle, which reduces the overall height of the evaporator while meeting performance requirements, facilitates condensate drainage, and helps guide airflow, reducing wind resistance. The heating core is placed at the end of the evaporator system, also at an angle, which reduces the overall height of the evaporator while meeting performance requirements, and helps guide airflow, reducing wind resistance. The distributed layout, consisting of an air inlet chamber, a refrigeration chamber, a heating chamber, and a mixing chamber, allows for full utilization of overhead and lateral space in the cab, without occupying front and rear space, thus providing a significant advantage for the cab's interior space and resulting in a more rational distribution of airflow from the entire evaporator.

[0086] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hybrid air evaporator system, characterized in that, include: An air intake cavity, a cooling cavity, a heating cavity, and a mixing cavity are installed on the roof of the driver's cab. The air intake cavity is connected to the cooling cavity, and both the cooling cavity and the heating cavity are connected to the mixing cavity. The mixing cavity is located between the cooling cavity and the heating cavity. A cooling core is installed in the cooling cavity, and a heating core is installed in the heating cavity. Both the cooling core and the heating core are inclined.

2. The hybrid air evaporator system according to claim 1, characterized in that, The air inlet cavity includes: a blower, a blower volute, and an outer housing. The blower is rotatably installed in the blower volute, and the blower volute is detachably connected to the outer housing. The outer housing is provided with a fresh air inlet, and a fresh air inlet cavity is provided between the fresh air inlet and the blower. The blower volute is provided with a return air inlet.

3. A mixed-air evaporator system according to claim 2, characterized in that, The blower casing includes an upper blower casing and a lower blower casing. The upper blower casing is installed on top of the lower blower casing, and the blower is rotatably installed between the upper blower casing and the lower blower casing. The ratio of the cross-sectional area of ​​the fresh air inlet to the cross-sectional area of ​​the return air inlet is 1:4, and filter elements are installed at both the fresh air inlet and the return air inlet.

4. The hybrid air evaporator system according to claim 1, characterized in that, The tilt angle of the cooling core relative to the horizontal line is in the range of 27°-28°, and the tilt angle of the heating core relative to the horizontal line is in the range of 24°-25°.

5. A mixed-air evaporator system according to claim 1, characterized in that, An indoor temperature sensor is installed on the air inlet cavity, a defrost temperature sensor is installed on the refrigeration cavity, and a controller is installed on the heating cavity. The indoor temperature sensor and the defrost temperature sensor are both connected to the controller. The controller is connected to a blower, a defrost damper actuator, a mixing damper actuator, and a compressor.

6. A mixed-air evaporator system according to claim 5, characterized in that, An ambient temperature sensor is installed on the air inlet cavity, and an outlet air temperature sensor is installed on the mixing cavity. Both the ambient temperature sensor and the outlet air temperature sensor are connected to the controller.

7. A mixed-air evaporator system according to claim 1, characterized in that, An air outlet is provided on one side of the mixing air cavity, and a defrosting and defogging air outlet is provided at the bottom of the mixing air cavity. The heating cavity has an upper and lower layered structure.

8. A mixed-air evaporator system according to claim 1, characterized in that, The mixing air cavity is equipped with a defrost damper actuator and a mixing damper actuator.

9. A mixed-air evaporator system according to claim 8, characterized in that, The defrost damper actuator includes: a defrost housing, a defrost damper motor, a defrost damper, a first rotating shaft, a first connecting rod, and a first lever. The defrost damper motor is mounted on the defrost housing, the defrost damper is mounted on the first rotating shaft, the first rotating shaft is rotatably mounted on the defrost housing, one end of the first lever is connected to the first rotating shaft, the first connecting rod is provided with a first sliding groove, the first connecting rod is connected to the output shaft of the defrost damper motor, and the other end of the first lever is slidably mounted in the first sliding groove. The mixing damper actuator includes: a mixing air housing, a mixing damper motor, a mixing damper, a second rotating shaft, a second connecting rod, and a second lever. The mixing damper motor is mounted on the mixing air housing, the mixing damper is mounted on the second rotating shaft, the second rotating shaft is rotatably mounted on the mixing air housing, one end of the second lever is connected to the second rotating shaft, the second connecting rod is provided with a second sliding groove, the second connecting rod is connected to the output shaft of the mixing damper motor, and the other end of the second lever is slidably mounted in the second sliding groove. Alternatively, the second rotating shaft is connected to the output shaft of the hybrid damper motor via a drive connection.

10. A harvester, characterized in that, The system includes a hybrid air evaporator system as described in any one of claims 1 to 9.

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