Double-layer flow air conditioner and vehicle

Abstract

This utility model discloses a dual-layer flow air conditioner and a vehicle. The dual-layer flow air conditioner includes an air inlet box, an air outlet box, and a blower box. The air outlet box contains an internal circulation duct, an external circulation duct, an upward-blowing duct, a defrosting duct, a middle-flow ventilation duct, a downward-blowing duct, an evaporator, a heater core, and a PTC heater assembly. The evaporator, heater core, and PTC heater assembly are arranged sequentially along the air outlet direction. The external circulation duct and the internal circulation duct are located between the evaporator and the heater core, with the external circulation duct above the internal circulation duct. The upward-blowing duct and the defrosting duct are located above the external circulation duct, with the upward-blowing duct closer to the evaporator than the defrosting duct. Compared with existing technologies, this utility model, by setting multiple ducts in the air outlet box and determining the positional relationship between these ducts, establishes a reasonable air delivery structure, enabling it to adaptively adjust the air inlet and outlet ratios in dual-layer flow mode.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air conditioning technology, and in particular to a dual-flow air conditioner and a vehicle. Background Technology

[0002] One major approach to existing automotive dual-flow air conditioning blower technology involves using upper and lower impellers with physical isolation between them. Air from inside the vehicle enters the lower impeller and is then sent out for heating, while air from inside the vehicle enters the upper impeller and is sent out for heating. Determining a reasonable air delivery structure that allows it to adaptively adjust the intake and exhaust ratios in dual-flow mode is a problem that needs to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a dual-layer air conditioner and vehicle to solve the technical problems in the prior art, which can meet the requirements of a reasonable air supply structure.

[0004] In a first aspect, this utility model provides a dual-layer flow air conditioner, including an air inlet box, an air outlet box, and a blower box, wherein:

[0005] The blower box is connected to the air inlet box and the air outlet box respectively. The air inlet box is located above the blower box, and the air outlet box is located to the side of the blower box. A blower is provided inside the blower box, and the blower has an upper blower component and a lower blower component.

[0006] The air inlet box is provided with an external circulation inlet and an internal circulation inlet. The external circulation inlet is connected to the air inlet end of the upper blower, and the internal circulation inlet is connected to the air inlet end of the lower blower.

[0007] The air outlet box is equipped with an internal circulation air duct, an external circulation air duct, an upward blowing air duct, a defrosting air duct, a middle flow air duct, a downward blowing air duct, an evaporator, a heating element, and a PTC heater assembly. The evaporator, the heating element, and the PTC heater assembly are arranged sequentially along the air outlet direction, wherein:

[0008] The external circulation duct and the internal circulation duct are located between the evaporator and the heating core, with the external circulation duct located above the internal circulation duct.

[0009] The upward blowing air duct and the defrosting air duct are located above the external circulation air duct. The upward blowing air duct is closer to the evaporator than the defrosting air duct. An upward blowing air damper is rotatably installed in the upward blowing air duct and is used to adjust the opening of the upward blowing air duct. A defrosting air damper is rotatably installed in the defrosting air duct and is used to adjust the opening of the defrosting air duct.

[0010] The intermediate flow ventilation duct and the downward blowing surface air duct are located on the side of the PTC heater assembly away from the heating core. The downward blowing surface air duct is located below the intermediate flow ventilation duct. An intermediate flow ventilation damper is rotatably provided in the intermediate flow ventilation duct and is used to adjust the opening of the intermediate flow ventilation duct. A downward blowing surface air damper is rotatably provided in the downward blowing surface air duct and is used to adjust the opening of the downward blowing surface air duct.

[0011] In the dual-flow air conditioner described above, preferably, a first damper linkage adjustment mechanism is provided outside the air outlet box. The first damper linkage adjustment mechanism includes a first mode disk, a first driving component is driven to the power input end of the first mode disk, and a first damper rocker arm, a second damper rocker arm, and a first connecting rod are driven to the power output end of the first mode disk. The first damper rocker arm is used to control the rotation of the upward blowing damper, the second damper rocker arm is used to control the rotation of the defrost damper, the first connecting rod is connected to a third damper rocker arm, the third damper rocker arm is used to control the rotation of the intermediate flow ventilation duct, the second damper rocker arm is connected to a second connecting rod, the second connecting rod is connected to a third connecting rod, and the third connecting rod is connected to a fourth damper rocker arm, the fourth damper rocker arm is used to control the rotation of the downward blowing damper.

[0012] In the dual-flow air conditioner described above, preferably, a second damper linkage adjustment mechanism is provided outside the air outlet box. The second damper linkage adjustment mechanism includes a second mode disk, a second driving component is driven to the power input end of the second mode disk, and a fifth damper rocker arm and a fourth connecting rod are driven to the power output end of the second mode disk. The fifth damper rocker arm is used to control the rotation of the inner circulation damper, and the fourth connecting rod is connected to a sixth damper rocker arm, which is used to control the rotation of the outer circulation damper.

[0013] In the dual-flow air conditioner described above, preferably, an external air intake damper is rotatably provided inside the external circulation inlet, the external air intake damper being used to adjust the opening of the external circulation inlet; and an internal air intake damper is rotatably provided inside the internal circulation inlet, the internal air intake damper being used to adjust the opening of the internal circulation inlet.

[0014] The air outlet box is provided with a third air damper linkage adjustment mechanism. The third air damper linkage adjustment mechanism includes a third mode disk. The power input end of the third mode disk is driven by a third driving component. The power output end of the third mode disk is driven by a seventh air damper rocker arm and an eighth air damper rocker arm. The seventh air damper rocker arm is used to control the rotation of the inner air intake damper, and the eighth air damper rocker arm is used to control the rotation of the outer air intake damper.

[0015] In the dual-flow air conditioner described above, preferably, the lower blower is connected to a flange, the flange has a vertically extending through hole, and the through hole has a plurality of ribs arranged in a ring at intervals.

[0016] In a dual-flow air conditioner as described above, preferably, the flange is connected to the housing of the blower box.

[0017] In the dual-flow air conditioner described above, preferably, a dual-flow baffle is also provided, wherein a plurality of first drain holes are distributed on the dual-flow baffle, and a water-blocking element is provided at the bottom of the dual-flow baffle corresponding to each first drain hole.

[0018] In the dual-flow air conditioner described above, preferably, the air outlet box is provided with a pipe through hole for refrigerant pipes to pass through, and the shell of the air outlet box is provided with a sealing gasket around the pipe through hole in the circumferential direction. The sealing gasket is provided with an annular protrusion, and a second drain hole is provided on the wall surface of the annular protrusion.

[0019] In the dual-flow air conditioner described above, preferably, a draining element is provided on the annular protrusion wall surface corresponding to the second drain hole.

[0020] Secondly, this utility model provides a vehicle including the aforementioned dual-layer air conditioning system.

[0021] Compared with the prior art, this utility model sets up multiple air ducts in the air outlet box and determines the positional relationship between the multiple air ducts to determine a reasonable air supply structure, so that it can adaptively adjust the air intake and exhaust ratio in the dual-layer flow mode. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the air outlet box provided in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram showing the position of the first damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the first damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram showing the position of the second damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the second damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0027] Figure 6This is a schematic diagram showing the position of the third damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the third damper linkage adjustment mechanism provided in this embodiment of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the blower provided in this embodiment of the utility model;

[0030] Figure 9 This is a bottom view of the blower provided in this embodiment of the utility model;

[0031] Figure 10 This is a schematic diagram of the working state of the blower provided in this embodiment of the utility model;

[0032] Figure 11 This is a schematic diagram of the structure of the double-layer flow baffle provided in this embodiment of the utility model;

[0033] Figure 12 This is a schematic diagram of the structure of the water-blocking component provided in this embodiment of the utility model;

[0034] Figure 13 This is a schematic diagram of the structure of the sealing gasket provided in this embodiment of the utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - Air inlet box, 101 - External circulation inlet, 102 - Internal circulation inlet, 103 - External air intake damper, 104 - Internal air intake damper;

[0037] 200 - Air outlet box; 201 - Internal circulation air duct; 202 - External circulation air duct; 203 - Top-blowing air duct; 204 - Defrosting air duct; 205 - Intermediate flow ventilation duct; 206 - Bottom-blowing air duct; 207 - Evaporator; 208 - Heater core; 209 - PTC heater assembly; 210 - Top-blowing air damper; 211 - Defrosting air damper; 212 - Intermediate flow ventilation damper; 213 - Bottom-blowing air damper; 214 - Pipe through hole; 215 - Sealing gasket; 216 - Annular protrusion; 217 - Second drain hole; 218 - Drainage component;

[0038] 300-Blower box, 301-Blower, 302-Upper blower component, 303-Lower blower component, 304-Flange, 305-Through hole, 306-Rib;

[0039] 400-First damper linkage adjustment mechanism, 401-First mode plate, 402-First damper rocker arm, 403-Second damper rocker arm, 404-Third damper rocker arm, 405-Fourth damper rocker arm, 406-First connecting rod, 407-Second connecting rod, 408-Third connecting rod;

[0040] 500 - Second damper linkage adjustment mechanism, 501 - Second mode plate, 502 - Fifth damper rocker arm, 503 - Sixth damper rocker arm, 504 - Fourth linkage;

[0041] 600 - Third damper linkage adjustment mechanism, 601 - Third mode panel, 602 - Seventh damper rocker arm, 603 - Eighth damper rocker arm;

[0042] 700 - Double-layer flow baffle, 701 - First drainage hole, 702 - Water-blocking component. Detailed Implementation

[0043] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] Reference Figures 1 to 13 As shown, this utility model provides a dual-flow air conditioner, including an air inlet box 100, an air outlet box 200, and a blower box 300, wherein:

[0045] The blower box 300 is one of the core components of the entire air conditioning system. It connects to both the air inlet box 100 and the air outlet box 200. The air inlet box 100 is located above the blower box 300, and the air outlet box 200 is located to the side of the blower box 300, facilitating the delivery of treated air to different areas of the vehicle interior. The blower box 300 houses a blower 301, which has an upper blower component 302 and a lower blower component 303, as shown in the reference diagram. Figure 10 As shown, the upper blower 302 is used to handle external air circulation (i.e., air introduced from the outside), while the lower blower 303 is used to handle internal air circulation (i.e., recirculation of air inside the vehicle).

[0046] The external and internal air circulation can be controlled independently, avoiding air mixing and improving the efficiency and flexibility of air handling. When fresh external air needs to be introduced, the air from the external circulation inlet 101 enters the upper blower 302 of the blower box 300, and is delivered to the outlet air box 200 by the action of the blower 301. After being processed by the evaporator 207, the heater core 208, or the PTC heater assembly 209, it is blown out from the corresponding air duct of the outlet air box 200. When it is necessary to circulate the air inside the vehicle, the air from the internal circulation inlet 102 enters the lower blower 303 of the blower box 300, and is also delivered to the outlet air box 200 by the action of the blower 301. After being processed, it is blown out from the corresponding air duct of the outlet air box 200.

[0047] The air intake box 100 is equipped with an external circulation inlet 101 and an internal circulation inlet 102. The external circulation inlet 101 is an opening in the air intake box 100 used to introduce fresh outside air. The external circulation inlet 101 is connected to the air inlet end of the upper blower 302. After entering the air intake box 100 through the external circulation inlet 101, the outside air flows directly to the upper blower 302 of the blower box 300. In external circulation mode, the fresh outside air enters the air conditioning system through the external circulation inlet 101. After being processed by the upper blower 302 of the blower box 300, it enters the air outlet box 200 for further cooling or heating, and is finally blown into the vehicle.

[0048] The internal circulation inlet 102 is connected to the air inlet of the lower blower 303. The internal circulation inlet 102 is used to introduce air from inside the vehicle for circulation. After entering the air intake box 100 through the internal circulation inlet 102, the air from inside the vehicle flows directly to the lower blower 303 of the blower box 300. In internal circulation mode, the air from inside the vehicle enters the air conditioning system through the internal circulation inlet 102. After being processed by the lower blower 303 of the blower box 300, the air enters the air outlet box 200 for further cooling or heating, and is finally blown back into the vehicle.

[0049] The air outlet box 200 contains an internal circulation duct 201, an external circulation duct 202, an upward-blowing duct 203, a defrost duct 204, a central airflow duct 205, a downward-blowing duct 206, an evaporator 207, a heater core 208, and a PTC heater assembly 209. The internal circulation duct 201 handles the recirculated air inside the vehicle, while the external circulation duct 202 handles air introduced from outside. The upward-blowing duct 203 blows air upwards to regulate the temperature of the upper part of the vehicle interior. The defrost duct 204 blows air onto the windshield to prevent frost formation. The central airflow duct 205 controls whether the air from the external circulation duct 202 enters the downward-blowing duct 206. The downward-blowing duct 206 blows air downwards to regulate the temperature of the lower part of the vehicle interior.

[0050] The evaporator 207, the heater core 208, and the PTC heater assembly 209 are arranged sequentially along the air outlet direction. The evaporator 207 is used for cooling, absorbing heat through the evaporation of refrigerant to lower the air temperature. The heater core 208 is used for heating, heating the air with hot water or other heat sources. The PTC heater assembly 209 is used for rapidly heating the air, serving as an auxiliary heating component.

[0051] The external circulation duct 202 and the internal circulation duct 201 are located between the evaporator 207 and the heater core 208, with the external circulation duct 202 positioned above the internal circulation duct 201. Cooling process: Air (whether external or internal circulation) first passes through the evaporator 207, where the refrigerant evaporates, absorbing heat from the air and lowering its temperature. The cooled air is then blown into the vehicle through appropriate ducts (such as the upward-blowing duct 203 and the downward-blowing duct 206), further reducing the interior temperature. Heating process: After passing through the evaporator 207, the air enters the heater core 208, where it is initially heated by hot water or other heat sources. If a higher temperature is required, the air continues to be further heated through the PTC heater assembly 209. The heated air is then blown into the vehicle through appropriate ducts, increasing the interior temperature.

[0052] The upward-blowing air duct 203 and the defrosting air duct 204 are located above the external circulation air duct 202. The upward-blowing air duct 203 is closer to the evaporator 207 than the defrosting air duct 204. An upward-blowing damper 210 is rotatably installed within the upward-blowing air duct 203. The upward-blowing damper 210 is used to adjust the opening of the upward-blowing air duct 203, thereby controlling the airflow and direction through the duct. Users can adjust the opening of the upward-blowing damper 210 as needed to change the airflow intensity of the upward-blowing air duct 203. A defrosting damper 211 is rotatably installed within the defrosting air duct 204. The defrosting damper 211 is used to adjust the opening of the defrosting air duct 204, thereby controlling the airflow and direction through the duct. Users can adjust the opening of the defrosting damper 211 as needed to change the airflow intensity of the defrosting air duct 204.

[0053] The upward-blowing air duct 203 and the defrosting air duct 204 are each equipped with independent dampers, allowing users to adjust the opening of the two ducts independently as needed to meet different requirements. The upward-blowing air duct 203 is closer to the evaporator 207, which can deliver cooled or heated air to the upper area of ​​the vehicle interior more quickly, improving adjustment efficiency.

[0054] The intermediate flow ventilation duct 205 and the downward blowing air duct 206 are located on the side of the PTC heater assembly 209 opposite to the heating core 208. The downward blowing air duct 206 is located below the intermediate flow ventilation duct 205. An intermediate flow ventilation damper 212 is rotatably installed within the intermediate flow ventilation duct 205. The intermediate flow ventilation damper 212 is used to adjust the opening of the intermediate flow ventilation duct 205, thereby controlling the airflow and direction through the duct. Users can adjust the opening of the intermediate flow ventilation damper 212 as needed to change the airflow intensity of the intermediate flow ventilation duct 205. A downward blowing air damper 213 is rotatably installed within the downward blowing air duct 206. The downward blowing air damper 213 is used to adjust the opening of the downward blowing air duct 206, thereby controlling the airflow and direction through the duct. Users can adjust the opening of the downward blowing air damper 213 as needed to change the airflow intensity of the downward blowing air duct 206.

[0055] By setting multiple air ducts in the air outlet box 200 and determining the positional relationship between these ducts, a reasonable air supply structure is established, enabling it to adaptively adjust the intake and exhaust ratios in a dual-layer flow mode. The intake cross-sectional area of ​​the inner circulation duct 201 and the outer circulation duct 202 determines the intake ratio. By opening and closing the intermediate flow ventilation damper 212, the airflow path can be flexibly adjusted to meet the needs of different scenarios. In one mode, when the intermediate flow ventilation damper 212 is open, some air from the outer circulation duct 202 enters the downward blowing duct 206. In this case, the air from the outer circulation duct 202 can not only be blown out through its own outlet but also diverted to the downward blowing duct 206 through the intermediate flow ventilation duct 205, thus achieving more flexible air distribution. In another mode, when the intermediate flow ventilation damper 212 is closed, air from the outer circulation duct 202 cannot enter the downward blowing duct 206. The air in the external circulation duct 202 can only be blown out through the upward blowing duct 203 and the defrosting duct 204, and will not be diverted to the downward blowing duct 206, thus improving the concentration of airflow.

[0056] This utility model embodiment sets multiple air ducts in the air outlet box 200, and determines a reasonable air supply structure by determining the positional relationship between the multiple air ducts, so that it can adaptively adjust the air intake and exhaust ratio in the dual-layer flow mode. Through experimental comparison, the solution of this case has improved air volume, reduced noise, and reduced power consumption under the condition of similar overall volume and weight. The key performance indicators of the blower 301 have been significantly improved.

[0057] Reference Figure 2 as well as Figure 3As shown in the embodiment provided by this utility model, a first damper linkage adjustment mechanism 400 is provided on the outside of the air outlet box 200. The first damper linkage adjustment mechanism 400 includes a first mode disk 401. The power input end of the first mode disk 401 is driven by a first driving member. The first driving member (e.g., a motor or a manual adjustment device) provides power to drive the first mode disk 401 to rotate. The power output end of the first mode disk 401 is driven by a first damper rocker arm 402, a second damper rocker arm 403, and a first connecting rod 406. The first mode disk 401 is connected to multiple damper rocker arms and connecting rods through a transmission device to realize the linkage control of multiple dampers.

[0058] The first damper rocker arm 402 controls the rotation of the top-blowing damper 210. When the first mode disc 401 rotates, the first damper rocker arm 402 rotates accordingly, thereby adjusting the opening of the top-blowing damper 210. The second damper rocker arm 403 controls the rotation of the defrosting damper 211. When the first mode disc 401 rotates, the first damper rocker arm 402 rotates accordingly, thereby adjusting the opening of the top-blowing damper 210. The first connecting rod 406 connects to the third damper rocker arm 404, which controls the rotation of the intermediate flow ventilation damper 212. The first connecting rod 406 transmits power, enabling the third damper rocker arm 404 to control the rotation of the intermediate flow ventilation damper 212. The second damper rocker arm 403 is connected to the second link 407, the second link 407 is connected to the third link 408, and the third link 408 is connected to the fourth damper rocker arm 405. The fourth damper rocker arm 405 is used to control the rotation of the lower intermediate flow ventilation duct 205. The second damper rocker arm 403 is connected to the third link 408 through the second link 407, and then to the fourth damper rocker arm 405 through the third link 408, ultimately controlling the rotation of the lower blowing damper 213.

[0059] A first driving element (e.g., a motor) provides power to rotate the first mode disk 401. The power of the first mode disk 401 is transmitted to each damper rocker arm and connecting rod via a transmission device. The first damper rocker arm 402 controls the opening of the upward blowing damper 210, the second damper rocker arm 403 controls the opening of the defrosting damper 211, the third damper rocker arm 404 controls the opening of the intermediate flow ventilation damper 212 via the first connecting rod 406, and the fourth damper rocker arm 405 controls the opening of the downward blowing damper 213 via the second connecting rod 407 and the third connecting rod 408. Through the first driving element and the first mode disk 401, and utilizing the structure of the connecting rods and rocker arms, the coordinated control between multiple dampers is achieved, improving the system's coordination and response speed.

[0060] Reference Figure 4 as well as Figure 5As shown in the embodiment provided by this utility model, a second damper linkage adjustment mechanism 500 is provided outside the air outlet box 200. The second damper linkage adjustment mechanism 500 includes a second mode disk 501. The power input end of the second mode disk 501 is driven by a second driving member. The second driving member (e.g., a motor or a manual adjustment device) provides power to drive the second mode disk 501 to rotate. The power output end of the second mode disk 501 is driven by a fifth damper rocker arm 502 and a fourth connecting rod 504. The fifth damper rocker arm 502 is used to control the rotation of the inner circulation damper. When the second mode disk 501 rotates, the fifth damper rocker arm 502 rotates accordingly, thereby adjusting the opening degree of the inner circulation damper. The fourth connecting rod 504 is connected to a sixth damper rocker arm 503, which is used to control the rotation of the outer circulation damper. The fourth connecting rod 504 is connected to the power output end of the second mode disk 501. When the second mode disk 501 rotates, the fourth link 504 drives the sixth damper rocker arm 503 to rotate, thereby adjusting the opening of the external circulation damper.

[0061] The opening and closing of the internal circulation damper and the external circulation damper can be controlled simultaneously through the second drive unit and the second mode disk 501. The linkage control between the internal circulation damper and the external circulation damper is realized through the structure of the linkage and rocker arm, which improves the coordination and response speed of the system.

[0062] In the embodiments provided by this utility model, an external air intake damper 103 is rotatably provided inside the external circulation inlet 101. The external air intake damper 103 is used to adjust the opening degree of the external circulation inlet 101, thereby controlling the flow rate of external air entering the system. When more fresh air needs to be introduced (such as in summer or when the air quality is good), the opening degree of the external air intake damper 103 can be increased; when it is necessary to reduce the entry of external cold air (such as in winter), its opening degree can be decreased.

[0063] An internal air intake damper 104 is rotatably installed inside the internal circulation inlet 102. The internal air intake damper 104 is used to adjust the opening of the internal circulation inlet 102, thereby controlling the flow of air entering the system from inside the vehicle. When it is necessary to quickly raise the temperature inside the vehicle (such as in winter), the opening of the internal air intake damper 104 can be increased to reduce the introduction of outside air; when it is necessary to keep the air inside the vehicle fresh, its opening can be appropriately reduced.

[0064] Reference Figure 6 as well as Figure 7As shown, a third damper linkage adjustment mechanism 600 is provided on the outside of the air outlet box 200. The third damper linkage adjustment mechanism 600 includes a third mode disk 601. A third driving component (e.g., a motor or manual adjustment device) is driven to the power input end of the third mode disk 601, providing power to drive the third mode disk 601 to rotate. A seventh damper rocker arm 602 and an eighth damper rocker arm 603 are driven to the power output end of the third mode disk 601, connected via a transmission device to the seventh and eighth damper rocker arms 602 and 603, respectively, to achieve linkage control of the inner air intake damper 104 and the outer air intake damper 103. The seventh damper rocker arm 602 controls the rotation of the inner air intake damper 104. When the third mode disk 601 rotates, the seventh damper rocker arm 602 rotates accordingly, thereby adjusting the opening degree of the inner air intake damper 104. The eighth damper rocker arm 603 controls the rotation of the outer air intake damper 103. When the third mode disk 601 rotates, the eighth damper rocker arm 603 rotates accordingly, thereby adjusting the opening of the outer air intake damper 103. Through the third drive component and the third mode disk 601, the linkage control between the inner air intake damper 104 and the outer air intake damper 103 is realized, improving the system's coordination and response speed.

[0065] In one feasible implementation, refer to Figure 8 and Figure 9 As shown, the lower blower 303 is connected to the flange 304. The flange 304 is used to connect the lower blower 303 to other components, and also serves to support and fix it. The flange 304 has a vertically extending through hole 305 for air circulation. Several ribs 306 are provided inside the through hole 305. The multiple ribs 306 are arranged in a ring at intervals to strengthen the structure and guide the airflow.

[0066] The flange 304 and ventilation structure are integrated into one unit. The flange 304 features a hollow design, allowing lower-level air intake to directly enter through the through hole 305. Simultaneously, the flange 304 retracts below the impeller, shortening the distance between the impeller's center of gravity and the motor's center of gravity, reducing system vibration during operation, and improving the stability and lifespan of the air conditioner. This also avoids uneven load distribution between the upper and lower laminar flow modes, ensuring balanced airflow in dual-laminar flow mode.

[0067] Furthermore, the flange 304 has multiple through holes 305 symmetrically distributed in a ring, and the lower air intake of the blower 303 is adjusted to an axial ring air intake, which makes the air intake more uniform and helps to reduce noise and increase air volume.

[0068] Preferably, the flange 304 and the blower housing 300 are directly mounted, which reduces assembly errors and improves the overall stability of the system. The flange 304 has been optimized for strength to ensure sufficient rigidity when connecting the lower blower component 303 and the lower housing. The blower 301 cover plate only serves to seal the air and does not provide mounting, so it can be designed to be thinner, thereby reducing material usage and weight. It also reduces the number of mounting points, simplifies the assembly process, and improves assembly efficiency.

[0069] In the embodiments provided by this utility model, reference is made to Figure 11 as well as Figure 12 As shown, a double-layer flow baffle 700 is also provided. The double-layer flow baffle 700 is used to separate different airflow channels, realizing the separation and independent control of external circulation air and internal circulation air, which helps to optimize airflow distribution and improve the efficiency of the air conditioning system. The double-layer flow baffle 700 is usually located inside the air outlet box 200, dividing the air outlet box 200 into upper and lower layers or inner and outer parts, corresponding to the external circulation air duct 202 and the internal circulation air duct 201, respectively. Several first drain holes 701 are distributed on the double-layer flow baffle 700. The function of the first drain holes 701 is to drain condensate or other liquids that may accumulate on the double-layer flow baffle 700, preventing corrosion or leakage problems caused by moisture accumulation. The number and distribution of the first drain holes 701 are designed according to actual needs and are not limited here.

[0070] At the bottom of the double-layer flow baffle 700, a water-blocking element 702 is provided corresponding to each first drain hole 701. The function of the water-blocking element 702 is to prevent water flow from directly impacting the components below the double-layer flow baffle 700, thus buffering and guiding the water flow. This effectively reduces the impact of water flow on the components below, protects other components inside the air outlet box 200 from water erosion, and also helps guide the water flow to smoothly exit the system.

[0071] In the embodiments provided by this utility model, reference is made to Figure 13 As shown, the air outlet box 200 is provided with a pipe through hole 214, which is used for the refrigerant pipe to pass through. The refrigerant pipe passes through this pipe through hole 214 to deliver the refrigerant to the evaporator 207 or return from the evaporator 207 to the compressor, ensuring the normal operation of the air conditioning system's cooling and heating functions.

[0072] The housing of the air outlet box 200 is circumferentially fitted with a sealing gasket 215 around the pipe through-hole 214. The sealing gasket 215 prevents refrigerant leakage and also prevents outside air or moisture from entering the refrigerant pipes, ensuring the system's sealing performance and reliability. An annular protrusion 216 protrudes from the sealing gasket 215, increasing the contact area between the sealing gasket 215 and the pipe, further improving sealing performance. The annular protrusion 216 also provides a buffering effect, reducing friction and vibration between the pipes and the housing. A second drain hole 217 is provided on the wall of the annular protrusion 216. The second drain hole 217 is used to drain condensate or other liquids that may accumulate around the pipe through-hole 214.

[0073] Furthermore, a flow guide 218 is provided on the wall surface of the annular protrusion 216 corresponding to the second drain hole 217. The flow guide 218 is an inclined guide plate structure, and its shape and size are designed according to actual needs to ensure optimal flow guidance. This can effectively reduce the accumulation of liquid around the pipe through hole 214, reducing the risk of corrosion and leakage.

[0074] Secondly, this utility model also provides a vehicle including the aforementioned dual-layer air conditioning system.

[0075] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A dual-flow air conditioner, characterized in that, Includes the air inlet box, air outlet box, and blower box, among which: The blower box is connected to the air inlet box and the air outlet box respectively. The air inlet box is located above the blower box, and the air outlet box is located to the side of the blower box. A blower is provided inside the blower box, and the blower has an upper blower component and a lower blower component. The air inlet box is provided with an external circulation inlet and an internal circulation inlet. The external circulation inlet is connected to the air inlet end of the upper blower, and the internal circulation inlet is connected to the air inlet end of the lower blower. The air outlet box is equipped with an internal circulation air duct, an external circulation air duct, an upward blowing air duct, a defrosting air duct, a middle flow air duct, a downward blowing air duct, an evaporator, a heating element, and a PTC heater assembly. The evaporator, the heating element, and the PTC heater assembly are arranged sequentially along the air outlet direction, wherein: The external circulation duct and the internal circulation duct are located between the evaporator and the heating core, with the external circulation duct located above the internal circulation duct. The upward blowing air duct and the defrosting air duct are located above the external circulation air duct. The upward blowing air duct is closer to the evaporator than the defrosting air duct. An upward blowing air damper is rotatably installed in the upward blowing air duct and is used to adjust the opening of the upward blowing air duct. A defrosting air damper is rotatably installed in the defrosting air duct and is used to adjust the opening of the defrosting air duct. The intermediate flow ventilation duct and the downward blowing surface air duct are located on the side of the PTC heater assembly away from the heating core. The downward blowing surface air duct is located below the intermediate flow ventilation duct. An intermediate flow ventilation damper is rotatably provided in the intermediate flow ventilation duct and is used to adjust the opening of the intermediate flow ventilation duct. A downward blowing surface air damper is rotatably provided in the downward blowing surface air duct and is used to adjust the opening of the downward blowing surface air duct.

2. The dual-laminar flow air conditioner according to claim 1, characterized in that, The air outlet box is externally equipped with a first damper linkage adjustment mechanism. The first damper linkage adjustment mechanism includes a first mode disk. The power input end of the first mode disk is drivenly connected to a first driving component. The power output end of the first mode disk is drivenly connected to a first damper rocker arm, a second damper rocker arm, and a first connecting rod. The first damper rocker arm is used to control the rotation of the upward blowing damper. The second damper rocker arm is used to control the rotation of the defrosting damper. The first connecting rod is connected to a third damper rocker arm, which is used to control the rotation of the intermediate airflow duct. The second damper rocker arm is connected to a second connecting rod. The second connecting rod is connected to a third connecting rod. The third connecting rod is connected to a fourth damper rocker arm, which is used to control the rotation of the downward blowing damper.

3. The dual-laminar flow air conditioner according to claim 1, characterized in that, The air outlet box is provided with a second damper linkage adjustment mechanism. The second damper linkage adjustment mechanism includes a second mode disk. The power input end of the second mode disk is driven by a second driving component. The power output end of the second mode disk is driven by a fifth damper rocker arm and a fourth connecting rod. The fifth damper rocker arm is used to control the rotation of the internal circulation damper. The fourth connecting rod is connected to a sixth damper rocker arm, which is used to control the rotation of the external circulation damper.

4. The dual-laminar flow air conditioner according to claim 1, characterized in that, An external air intake damper is rotatably provided inside the external circulation inlet, and the external air intake damper is used to adjust the opening of the external circulation inlet. An internal air intake damper is rotatably provided inside the internal circulation inlet, and the internal air intake damper is used to adjust the opening of the internal circulation inlet. The air outlet box is provided with a third air damper linkage adjustment mechanism. The third air damper linkage adjustment mechanism includes a third mode disk. The power input end of the third mode disk is driven by a third driving component. The power output end of the third mode disk is driven by a seventh air damper rocker arm and an eighth air damper rocker arm. The seventh air damper rocker arm is used to control the rotation of the inner air intake damper, and the eighth air damper rocker arm is used to control the rotation of the outer air intake damper.

5. The dual-laminar flow air conditioner according to claim 1, characterized in that, The lower blower is connected to a flange, which has a vertically extending through hole and a number of ribs arranged in a ring at intervals.

6. The dual-layer flow air conditioner according to claim 5, characterized in that, The flange is connected to the housing of the blower box.

7. The dual-laminar flow air conditioner according to claim 1, characterized in that, It is also provided with a double-layer flow baffle, on which a plurality of first drainage holes are distributed, and a water-blocking element is provided at the bottom of the double-layer flow baffle corresponding to each first drainage hole.

8. The dual-laminar flow air conditioner according to claim 1, characterized in that, The air outlet box is provided with a pipe through hole for refrigerant pipes to pass through. The shell of the air outlet box is provided with a sealing gasket around the pipe through hole. The sealing gasket has an annular protrusion, and the wall of the annular protrusion has a second drain hole.

9. The dual-layer flow air conditioner according to claim 8, characterized in that, A draining element is provided on the wall surface of the annular protrusion corresponding to the second drain hole.

10. A vehicle, characterized in that, Includes the dual-flow air conditioner according to any one of claims 1-9.

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