Air conditioning box, air conditioning system and vehicle

Abstract

The invention relates to an air conditioning box, an air conditioning system and a vehicle, and the air conditioning box comprises a shell part and a first cooler arranged in the shell part; the shell part is provided with an air inlet, an air outlet and an air duct communicated between the air inlet and the air outlet, and the first cooler is communicated in the air duct; the air duct further communicates with a bypass air path, the air inlet communicates with the first cooler and the bypass air path, and the bypass air path is provided with a flow adjusting part. In the refrigeration mode, the air conditioner box can flexibly adjust the air outlet temperature so as to meet different requirements of users, and meanwhile energy consumption can be reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to an air conditioning unit, an air conditioning system, and a vehicle. Background Technology

[0002] For cars with six or more seats, to ensure passenger comfort, they are usually equipped with a front air conditioning unit and a rear air conditioning unit. The front air conditioning unit regulates the temperature of the front seats, while the rear air conditioning unit regulates the temperature of the rear seats. The evaporators of the front and rear air conditioning units are connected in parallel. In cooling mode, if the user's temperature requirement for the rear air conditioning unit is higher than that of the front air conditioning unit, the rear air conditioning unit needs to activate its heater to reheat the air that has been cooled by the evaporator, resulting in higher energy consumption.

[0003] In this situation, how to flexibly adjust the air outlet temperature of the air conditioning unit and reduce energy consumption in cooling mode is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide an air conditioning unit, an air conditioning system, and a vehicle that can flexibly adjust the air outlet temperature of the air conditioning unit in cooling mode to meet different user needs and reduce energy consumption.

[0005] To solve the above-mentioned technical problems, this application provides an air conditioning unit, including a shell and a first cooler disposed within the shell; the shell is provided with an air inlet, an air outlet and an air duct connecting the air inlet and the air outlet, the first cooler being connected within the air duct; the air duct is also connected to a bypass ventilation path, the air inlet is connected to the first cooler and the bypass ventilation path respectively, and the bypass ventilation path is provided with a flow regulating section.

[0006] The bypass ventilation path is equipped with a flow regulating unit, which is used to regulate the air volume flowing through the bypass ventilation path, thereby regulating the air volume passing through the first cooler. That is to say, in the cooling mode, if the flow regulating unit is closed, all the air entering the air duct can be cooled by the first cooler. If the flow regulating unit is open, part of the air entering the air duct is cooled by the first cooler and part is not cooled by passing through the bypass ventilation path. Then, the air cooled by the first cooler and the uncooled air are mixed and discharged from the air outlet. Therefore, in the cooling mode, the ratio of cooled air volume to uncooled air volume can be adjusted by regulating the flow regulating unit, thereby adjusting the temperature of the mixed air and thus adjusting the cooling capacity of the air conditioning unit.

[0007] In detail, in cooling mode, the refrigerant circuit is activated, the first and second coolers are on, and the heater is off. If the front and rear passengers have the same temperature requirements, the front and rear air conditioning units will maintain the same temperature. The flow control unit is closed, disconnecting the bypass ventilation. All air entering the duct through the air inlet travels along the main airflow path, is cooled by the first cooler, and then exits through the air outlet to cool the interior. If the front passengers require a lower temperature, while the rear passengers require a higher temperature (i.e., in cooling mode, the rear passenger temperature requirement is higher than the front passenger temperature requirement), the flow control unit is activated, opening the bypass ventilation. Part of the air entering the duct through the air inlet is cooled by the first cooler, while some remains uncooled through the bypass ventilation. These two portions of air then merge and exit through the air outlet to cool the interior. By adjusting the airflow through the bypass ventilation via the flow control unit, the temperature of the air exiting the air outlet can be adjusted to meet the different temperature needs of the rear passengers, improving their comfort.

[0008] In cooling mode, while meeting the cooling needs of front passengers, the flow control unit regulates the volume of uncooled air entering the air conditioning unit, thus adjusting the temperature of the cooled mixed air and consequently regulating the temperature of the rear passenger space to meet their relatively higher temperature requirements. Simultaneously, the primary cooler remains operational without adjustment, and there's no need to fully heat the air at the air vents of the air conditioning unit using a heater. This reduces the likelihood of heater use in cooling mode, lowering energy consumption. This approach is cost-effective, flexible, and meets diverse user needs, enhancing the user experience. Furthermore, for new energy vehicles, reduced energy consumption also contributes to increased driving range.

[0009] Optionally, the cavity between the outer wall of the first cooler's housing and the inner wall of the air duct forms the bypass ventilation path.

[0010] Optionally, the flow regulation unit includes a first driving member, a first damper, and an air outlet disposed in the bypass ventilation duct. The first driving member is used to drive the first damper to adjust the opening of the air outlet.

[0011] Optionally, the outer wall of the housing is provided with a first baffle, and the inner wall of the air duct is provided with a second baffle. The first baffle and the second baffle are arranged circumferentially along the bypass air duct, and the air vent is formed between the first baffle and the second baffle.

[0012] Optionally, the bypass ventilation path is located above the first cooler.

[0013] Optionally, the cross-sectional area of ​​the bypass ventilation path accounts for 20%-65% of the cross-sectional area of ​​the air duct.

[0014] Optionally, the cross-section of the bypass ventilation duct is a square structure, the square structure includes two first sides and two second sides, the outer wall of the housing forms one of the first sides, and the length of the first side is the same as the length of the housing along the extending direction of the first side.

[0015] Optionally, the inner wall of the air duct includes a first wall, which together with the outer wall of the outer shell forms the bypass air passage. Along the length of the air duct, the cross-sectional profile of the first wall and the cross-sectional profile of the outer wall of the outer shell are both linear structures.

[0016] Optionally, it also includes a heater connected in the air duct, wherein the first cooler and the bypass air duct are both located on the side of the heater facing the air inlet.

[0017] Optionally, the air duct further includes a second wall and a transition connection surface. The second wall and the outer wall of the heater form a bypass channel. The first wall, the transition connection surface and the second wall are connected sequentially along the length of the air duct. Along the length of the air duct, the cross-sectional profile of the second wall is a straight line structure, and the cross-sectional profile of the transition connection surface is an arc structure.

[0018] This application also provides an air conditioning system, including a refrigerant circuit, a front air conditioning unit, and an air conditioning unit as described above, wherein the second cooler of the front air conditioning unit and the first cooler of the air conditioning unit are both connected to the refrigerant circuit.

[0019] This application also provides a vehicle including the air conditioning unit system described above.

[0020] An air conditioning unit system having the air conditioning unit as described above, and a vehicle having the air conditioning unit system described above, have similar technical effects to the air conditioning unit described above, and will not be described in detail here for the sake of brevity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an air conditioning unit provided in an embodiment of this application;

[0022] Figure 2 yes Figure 1 Cross-sectional view of AA, with the flow regulating section in the closed position;

[0023] Figure 3 yes Figure 1 Cross-sectional view of AA, with the flow regulating section fully open;

[0024] Figure 4 yes Figure 3 Enlarged view of B in the middle;

[0025] Figure 5 yes Figure 1 Cross-sectional view of AA, the flow regulating section is in a semi-open state;

[0026] Figure 6 yes Figure 1 Internal structure diagram;

[0027] Figure 7 yes Figure 1 Side view;

[0028] Figure 8 yes Figure 1 A sectional view;

[0029] Figure 9 yes Figure 8 A magnified view of C.

[0030] Appendix Figures 1-9 The reference numerals in the attached figures are explained as follows:

[0031] 1. Shell, 11. Air inlet, 12. Air outlet, 121. First air outlet, 122. Second air outlet, 13. Air duct, 131. Second baffle, 132. First wall surface, 133. Second wall surface, 134. Transition connection surface, 14. Bypass ventilation path, 141. First side, 142. Second side, 15. Water collection tank, 16. First shell, 17. Second shell, 18. Bypass channel;

[0032] 2. First cooler; 21. First baffle;

[0033] 3 Flow regulation section, 31 First drive component, 32 First damper, 33 Air outlet section;

[0034] 4. Blowers;

[0035] 5 heaters;

[0036] 61 Second air damper, 62 Second drive unit. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The vehicle's air conditioning system is used to regulate the temperature inside the vehicle to meet user needs and improve comfort. The air conditioning system includes a refrigeration system, a front air conditioning unit, and an air conditioning housing. The air conditioning housing includes a first cooler, and the front air conditioning housing includes a second cooler. Refrigerant flows through the refrigerant circuit of the refrigeration system. The first and second coolers are connected in parallel and within the refrigerant circuit. In cooling mode, the refrigeration system, along with the first and second coolers, operates. As the refrigerant flows through the first and second coolers, it evaporates and absorbs heat, exchanging heat with the air inside the vehicle, thus achieving cooling.

[0039] In cooling mode, if rear passengers have higher temperature requirements than front passengers, the air conditioning unit needs to activate the heater to reheat the air that has been cooled by the first cooler, resulting in higher energy consumption.

[0040] This application provides an air conditioning unit that, in cooling mode, can flexibly adjust the air outlet temperature of the air conditioning unit to meet different user needs and reduce energy consumption.

[0041] Specifically, such as Figures 1-5 As shown, the air conditioning unit also includes a shell 1, which has an air inlet 11, an air outlet 12 and an air duct 13. The air duct 13 connects the air inlet 11 and the air outlet 12. The first cooler 2 is located inside the shell 1 and connected to the air duct 13. The air inside the vehicle can enter the air duct 13 through the air inlet 11. As the air flows along the air duct 13 to the air outlet 12, it can be cooled by the first cooler 2 and then discharged into the vehicle through the air outlet 12 to regulate the temperature inside the vehicle and achieve cooling.

[0042] The air conditioning unit also includes a heater 5 and a blower 4. The blower 4 is located at the air inlet 11 and is used to introduce external air into the air duct 13. The heater 5 is located inside the shell 1 and connected to the air duct 13. The heater 5 can heat the air entering the air duct 13. The heated air can be discharged into the vehicle through the air outlet 12 to regulate the temperature inside the vehicle and achieve heating.

[0043] The air duct 13 is also connected to a bypass ventilation path 14. The air inlet 11 is connected to the first cooler 2 and the bypass ventilation path 14 respectively. The bypass ventilation path 14 is set in parallel with the first cooler 2. The air passing through the air duct 13 along the bypass ventilation path 14 will not pass through the first cooler 2.

[0044] The bypass ventilation path 14 is equipped with a flow regulating unit 3, which is used to regulate the air volume flowing through the bypass ventilation path 14, thereby regulating the air volume passing through the first cooler 2. That is, in the cooling mode, if the flow regulating unit 3 is closed, all the air entering the air duct 13 can be cooled by the first cooler 2. If the flow regulating unit 3 is open, part of the air entering the air duct 13 is cooled by the first cooler 2, and part is not cooled by passing through the bypass ventilation path 14. Then, the air cooled by the first cooler 2 and the uncooled air are mixed and discharged from the air outlet 12. Therefore, in the cooling mode, the ratio of cooled air volume to uncooled air volume can be adjusted by regulating the flow regulating unit 3, thereby adjusting the temperature of the mixed air, that is, adjusting the cooling capacity of the air conditioning unit.

[0045] The airflow direction within air duct 13 is as follows Figure 2 , Figure 3 and Figure 5 As shown by the arrows in the diagram, the part indicated by the red arrow is the uncooled air, the part indicated by the green arrow is the air cooled by the first cooler 2, and the part indicated by the blue arrow is the mixed air, which is the air cooled by the first cooler 2 and the air that has passed through the bypass ventilation path 14 without being cooled.

[0046] In detail, in cooling mode, the refrigerant circuit is activated, the first cooler 2 and the second cooler are turned on, and the heater 5 is turned off. If the front and rear passengers in the vehicle have the same temperature requirements, the temperature requirements of the front air conditioning unit and the air conditioning unit will be consistent, and the flow regulating unit 3 will be closed, so that the bypass ventilation duct 14 is in the disconnected state (e.g., Figure 2 As shown), the airflow entering the air duct 13 through the air inlet 11 is cooled by the first cooler 2 along the main air path, and then discharged through the air outlet 12 to cool the interior of the vehicle. If the front passengers require a lower temperature, while the rear passengers require a higher temperature (i.e., in cooling mode, the rear passenger space temperature requirement is higher than the front passenger space temperature requirement), then the flow regulating unit 3 is activated, making the bypass ventilation duct 14 open (e.g., ...). Figure 3 and Figure 5 As shown, part of the airflow entering the air duct 13 from the air inlet 11 is cooled by the first cooler 2, while part passes through the bypass ventilation duct 14 without being cooled. Then, these two parts of airflow merge and are discharged from the air outlet 12 to cool the interior of the vehicle. By adjusting the airflow through the bypass ventilation duct 14 through the flow regulating unit 3, the temperature of the air discharged from the air outlet 12 can be adjusted to meet the different temperature requirements of users in the rear space and improve user comfort.

[0047] In cooling mode, while meeting the cooling needs of front-seat passengers, the flow regulation unit 3 adjusts the volume of uncooled air entering the air conditioning unit, thereby regulating the temperature of the cooled mixed air and consequently adjusting the temperature of the rear seats to meet the relatively higher temperature requirements of rear passengers. Simultaneously, the first cooler 2 remains in normal operation without requiring adjustment, and there is no need to fully heat the air at the air outlet 12 of the air conditioning unit via the heater 5. This reduces the probability of heater 5 being used in cooling mode, lowering energy consumption, reducing costs, and providing good flexibility. It can meet diverse user needs and improve the user experience. Furthermore, for new energy vehicles, reduced energy consumption also helps increase driving range.

[0048] The first cooler 2 includes an outer shell and a cooler body disposed within the outer shell. The outer shell has an inlet and an outlet on its two end walls along the flow direction of the air duct 13. The inner cavity of the outer shell is connected to the air duct 13 (specifically, to the main air duct). The cavity between the outer wall of the outer shell and the inner wall of the air duct 13 forms a bypass ventilation passage 14. Alternatively, in this embodiment, a partition or other component can be used to separate part of the space in the air duct 13 to form the bypass ventilation passage 14. Alternatively, a pipe can be provided, with both ends connected to the air duct 13. In this case, the pipe can be located inside or outside the shell 1. Directly placing the first cooler 2 within the air duct 13, so that the cavity between the outer wall of the first cooler 2's outer shell and the inner wall of the air duct 13 forms the bypass ventilation passage 14, simplifies the specific structure of the air duct 13 and the bypass ventilation passage 14, simplifies installation, and, since the bypass ventilation passage 14 is located within the shell 1, makes the overall structure of the air conditioning unit more regular.

[0049] The flow regulation unit 3 includes a first drive member 31, a first damper 32, and an air vent 33 disposed within the bypass ventilation duct 14. The first drive member 31 drives the first damper 32 to adjust the opening of the air vent 33. In other words, according to the needs of rear passengers, the first drive member 31 can drive the first damper 32 to adjust the airflow entering the air duct 13 and passing through the bypass ventilation duct 14. Alternatively, the flow regulation unit 3 can be configured as a regulating valve, and the first damper 32 simplifies the structure of the flow regulation unit 3 and reduces costs. Specifically, the first drive member 31 can be fixed outside the housing 1 to simplify the internal structure of the housing 1 and reduce its volume.

[0050] like Figure 4 and Figure 6As shown, the outer wall of the outer casing is provided with a first baffle 21, and the inner wall of the air duct 13 is provided with a second baffle 131. The first baffle 21 and the second baffle 131 are arranged alternately or continuously along the circumference of the bypass ventilation passage 14. At the same time, the extension direction of the first baffle 21 and the extension direction of the second baffle 131 are also arranged along the circumference of the bypass ventilation passage 14, and an air vent 33 is formed between the first baffle 21 and the second baffle 131.

[0051] Specifically, there are no restrictions on the specific structure of the first baffle 21 and the second baffle 131. For example, they can be protruding ridges or baffles. The specific design can be based on the actual space of the bypass ventilation duct 14 and the size requirements of the air vent 33.

[0052] When the first baffle 21 and the second baffle 131 are spaced apart along the circumference of the bypass ventilation passage 14, the first baffle 21, the second baffle 131 and the inner wall of the bypass ventilation passage 14 enclose the air vent 33. Alternatively, the first baffle 21 and the second baffle 131 can be continuously arranged along the circumference of the bypass ventilation passage 14. In this case, the first baffle 21 and the second baffle 131 can enclose the circumferentially closed frame structure, and the frame structure encloses the aforementioned air vent 33.

[0053] This design simplifies the structure of the air vent 33 and makes full use of the space inside the shell 1, thereby reducing the overall volume of the shell 1 while maintaining the same flow rate adjustment.

[0054] To ensure the airtightness of the first damper 32 in the closed state, a sealing gasket is used to abut between the first damper 32 and the baffle (including the first baffle 21 and the second baffle 131). The sealing gasket can be set on the first damper 32 or on the baffle. In this embodiment, it is preferable to set the sealing gasket on the side wall of the first damper 32 that abuts against the baffle. The sealing gasket can be fixed to the first damper 32 by means of adhesive, fastener connection or other methods. Alternatively, the sealing gasket can be integrally formed with the first damper 32 plate, which can further simplify the overall structure and ensure the installation stability of the sealing gasket.

[0055] The first damper 32 includes a rotating shaft and a baffle. The baffle is fixed to the rotating shaft. The side wall of the bypass ventilation passage 14 (specifically, the side wall of the housing 1) is provided with mounting holes. Both ends of the rotating shaft pass through the corresponding mounting holes, and the rotating shaft can rotate relative to the housing 1. The first driving member 31 can drive the rotating shaft to rotate, thereby driving the baffle to rotate relative to the housing 1, thus changing the obstruction between the baffle and the air vent 33, thereby adjusting the opening degree of the air vent 33. Figure 3 and Figure 4 The first damper 32 shown is in the fully open state, as... Figure 5 The first damper 32 shown is in a half-open state. At this time, the airflow through the bypass ventilation path 14 is relatively... Figure 3 and Figure 4 The air volume shown is relatively small.

[0056] Alternatively, the housing 1 can be provided with a mounting groove, and the two ends of the rotating shaft can be rotatably inserted into the corresponding mounting groove. The rotating shaft is rotatably connected to the housing 1 through the mounting hole, which can ensure the installation stability between the rotating shaft and the housing 1 and prevent the rotating shaft from detaching from the housing 1 during rotation.

[0057] like Figure 1 As shown, a water collection tank 15 is also provided at the bottom of the shell 1. During the cooling process of the air in the air duct 13 through the first cooler 2, the water vapor inside will condense into water droplets and fall under the action of gravity. The water collection tank 15 is used to collect this condensate to prevent it from entering other parts along the air duct 13 and causing damage to other components. The water collection tank 15 can be drained through a drain outlet, or the water collection tank 15 can be detachably connected to the shell 1. When the water in the water collection tank 15 reaches a certain amount or after a certain period of time, the water collection tank 15 can be removed and the water poured out. No specific restrictions are made here.

[0058] The bypass ventilation path 14 is located above the first cooler 2. This arrangement prevents condensate from falling into the bypass ventilation path 14 and damaging it or its flow regulation device. It also prevents condensate from leaking out of the housing 1 along the mounting hole.

[0059] In this embodiment, the specific structure of the air duct 13 is not limited, such as... Figure 1 As shown, the shell portion 1 is configured to include a first shell 16 and a second shell 17. At least one of the first shell 16 and the second shell 17 is provided with a groove structure. When the first shell 16 and the second shell 17 are assembled and fixed, the first shell 16 and the second shell 17 can form an air duct 13 by enclosing the groove structure. Specifically, the first shell 16 or the second shell 17 may be provided with a groove structure. Taking the first shell 16 as an example, after the second shell 17 is fixed to the first shell 16, the second shell 17 fits with the open end of the groove structure through the planar structure to enclose and form the air duct 13. Alternatively, the first shell 16 and the second shell 17 may be provided with groove structures respectively. When the first shell 16 and the second shell 17 are fixed, the groove structure of the first shell 16 and the groove structure of the second shell 17 can be connected to each other and abut against each other through the end of the groove wall of the groove structure of the first shell 16 and the end of the groove wall of the groove structure of the second shell 17 to enclose and form the air duct 13.

[0060] Of course, in this embodiment, the specific structure of the air duct 13 is not limited. For example, the air duct 13 can also be set as a separate structure, which is a pipe structure with an internal cavity, placed inside the shell 1, and the two ends of the pipe structure are connected to the air inlet 11 and the air outlet 12 of the shell 1, respectively. The air duct 13 is formed by the structure of the shell 1 itself, which can further simplify the overall structure and simplify the disassembly and assembly operations.

[0061] like Figure 2 , Figure 3 and Figure 5 As shown, both the first cooler 2 and the bypass ventilation duct 14 are located on the side of the heater 5 facing the air inlet 11. Alternatively, the heater 5 can be located on the side facing the air inlet 11, and the first cooler 2 can be located on the side facing the air outlet 12. When both the first cooler 2 and the bypass ventilation duct 14 are located on the side of the heater 5 facing the air inlet 11, the heater 5 is located on the downstream side of the air duct 13. The air cooled by the first cooler 2 and the air not cooled by the bypass ventilation duct 14 pass through the heater 5 together before being discharged from the air outlet 12. This extends the mixing space of the two air streams, resulting in a more uniform mixing and a better user experience.

[0062] like Figure 2 , Figure 3 and Figure 5 As shown, the air outlet 12 includes a first air outlet 121 and a second air outlet 122. In the installed state, the first air outlet 121 is arranged downwards to form a foot-blowing air outlet, and the second air outlet 122 is arranged upwards to form a face-blowing air outlet. The air conditioning unit also includes a mode adjustment unit, which includes a second damper 61 and a second drive component 62, wherein, as... Figure 2 , Figure 3 and Figure 5 As shown, the second damper 61 is disposed inside the housing 1 and located on one side of the air outlet 12. The second driving member 62 is used to drive the second damper to rotate, thereby adjusting the airflow direction of the air outlet 12 to achieve three modes. Specifically, the second damper 61 can block the first air outlet 121, in which case only the second air outlet 122 outlets air out; the second damper 61 can also block the second air outlet 122, in which case only the first air outlet 121 outlets air out; or it can also be as follows. Figure 2 , Figure 3 and Figure 5 As shown, the second air damper 61 rotates to a position between the first air outlet 121 and the second air outlet 122. At this time, air flows from both the first and second air outlets 121 simultaneously. Passengers can adjust the second air damper 61 to different modes according to their needs to meet diverse user requirements and enhance the user experience. Specifically, the second drive component 62 can be fixed to the outside of the housing 1 (e.g., ...). Figure 7As shown in the figure, this simplifies the internal structure of the shell 1 and reduces its volume.

[0063] A reserved space is left between the top wall of heater 5 and the inner wall of air duct 13, which forms a bypass channel 18 (e.g., Figure 3 and Figure 4 As shown, the bypass channel 18 is arranged in parallel with the heater 5 and is located above the heater 5. Part of the air in the air duct 13 is heated by the heater 5, while part flows along the bypass channel 18 to the air outlet 12 without being heated by the heater 5. With this arrangement, the upper part of the air in the air duct 13 is not heated by the heater 5. This part of the air, along with the air heated by the heater 5, is blown out from the first air outlet 121 and the second air outlet 122. Since the bypass channel 18 is located above the heater 5, the temperature of the face air blown out from the second air outlet 122 is lower than the temperature of the foot air blown out from the first air outlet 121. This ensures that in heating mode, the temperature above the rear space is lower than the temperature below, thus guaranteeing the heating needs of the rear space while preventing hot air from blowing directly into the upper space and causing discomfort to passengers, thereby ensuring passenger comfort.

[0064] The inner wall of the air duct 13 includes a first wall surface 132, a transition connection surface 134 and a second wall surface 133 arranged sequentially along the length direction (i.e. the gas flow direction). The first wall surface 132 and the outer wall of the first cooler 2 form a bypass ventilation passage 14, and the second wall surface 133 and the outer wall of the heater 5 form a bypass channel 18. The transition connection surface 134 connects the first wall surface 132 and the second wall surface 133.

[0065] Along the length of the air duct 13, the cross-sectional profiles of the first wall surface 132, the second wall surface 133, and the outer wall surface of the outer shell are all straight. This arrangement can reduce the air resistance when passing through the bypass air duct 14 and the bypass channel 18, and also simplify the overall structure and molding process. The cross-sectional profile of the transition connection surface 134 is arc-shaped to smoothly transition between the first wall surface 132 and the second wall surface 133, thereby reducing air resistance.

[0066] In the same cross-section of the air duct 13, the cross-sectional area of ​​the bypass ventilation passage 14 accounts for 20%-65% of the cross-sectional area of ​​the air duct 13. When the cross-sectional area of ​​the bypass ventilation passage 14 is too small, such as 5% or 10% of the cross-sectional area of ​​the air duct 13, the amount of airflow to be regulated will be less. This may result in the temperature regulation requirements of the rear passengers being insufficient through the bypass ventilation passage 14 alone in the cooling state. When the temperature requirements of the rear passengers are relatively high, the heater 5 may need to be turned on for auxiliary heating. On the other hand, when the cross-sectional area of ​​the bypass ventilation passage 14 is too large, such as 70% or 80% of the cross-sectional area of ​​the air duct 13, the space occupied by the bypass ventilation passage 14 will be too large, the volume of the shell 1 will be too large, and the installation space requirements will be high.

[0067] The cross-sectional area of ​​the bypass ventilation path 14 can be within the range of 20%-65% of the cross-sectional area of ​​the air duct 13, such as 20%, 30%, 40%, 50%, 60%, 65%, etc. This maximizes the airflow of the bypass ventilation path 14 while taking into account the installation space, reducing the probability of using the heater 5 in cooling mode and effectively reducing costs. Furthermore, the cross-sectional area of ​​the bypass ventilation path 14 is preferably 60% of the total cross-sectional area of ​​the air duct 13. In this way, in cooling mode, the temperature regulation requirements of the rear passengers can be fully met by adjusting the flow rate regulation unit 3 of the bypass ventilation path 14. That is to say, in cooling mode, the heater 5 does not need to be turned on to meet the diverse temperature needs of the rear passengers. At the same time, it also reduces the installation space requirements of the shell 1, providing good flexibility.

[0068] like Figure 8 and Figure 9 As shown, the cross-section of the bypass ventilation path 14 is square, and the cross-section is perpendicular to the length direction of the air duct 13. The square structure specifically includes two first sides 141 and two second sides 142. Of course, in this embodiment, the shape of the cross-section of the bypass ventilation path 14 is not limited. For example, it can also be set as a semi-circle, trapezoid, triangle, etc. However, when the cross-section of the bypass ventilation path 14 is set as a square structure, the cross-sectional area can be maximized in a limited space, thus ensuring the flow rate of the bypass ventilation path 14.

[0069] The outer wall of the outer casing has a first side 141 forming a square structure in cross-section. The length of the first side 141 is the same as the length of the outer casing. That is, the dimension of the bypass ventilation passage 14 in the extension direction of the first side 141 is the same as the dimension of the first cooler 2 in the extension direction of the first side 141. This arrangement can make full use of the space within the air duct 13 to form the bypass ventilation passage 14 with the largest possible size. This ensures the cross-sectional area and flow rate of the bypass ventilation passage 14 within a limited space, thereby ensuring the temperature regulation range achieved by the air conditioning unit through the first cooler 2 and the flow regulation unit 3 in cooling mode. This ensures passenger comfort while reducing the probability of using the heater 5.

[0070] When the cross-section of the bypass ventilation duct 14 and the cross-section of the first cooler 2 are both square structures and the bypass ventilation duct 14 is located above the first cooler 2, the length of the second side 142 accounts for 20%-65% of the dimension of the air duct in the extension direction of the second side 142.

[0071] This application embodiment also provides an air conditioning system, which includes the aforementioned air conditioning unit. The air conditioning system regulates the temperature of the front row space in the vehicle through the front air conditioning unit and can also regulate the temperature of the rear row space in the vehicle through the air conditioning unit to meet the comfort and diverse needs of passengers.

[0072] This application also provides a vehicle that includes the aforementioned air conditioning system, which regulates the temperature of the vehicle interior to meet the comfort and diverse needs of passengers.

[0073] In the description of this application, it should be understood that the terms "upper", "lower", "front", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0075] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air conditioning unit, characterized in that, Includes a shell (1) and a first cooler (2) disposed within the shell (1); The shell (1) is provided with an air inlet (11), an air outlet (12) and an air duct (13) connecting the air inlet (11) and the air outlet (12), and the first cooler (2) is connected in the air duct (13); The air duct (13) is also connected to a bypass ventilation path (14). The air inlet (11) is connected to the first cooler (2) and the bypass ventilation path (14) respectively, and the bypass ventilation path (14) is provided with a flow regulating part (3).

2. The air conditioning unit according to claim 1, characterized in that, The cavity between the outer wall of the outer shell of the first cooler (2) and the inner wall of the air duct (13) forms the bypass air passage (14).

3. The air conditioning unit according to claim 2, characterized in that, The flow regulation unit (3) includes a first drive member (31), a first damper (32), and an air vent (33) disposed in the bypass ventilation path (14). The first drive member (31) is used to drive the first damper (32) to adjust the opening of the air vent (33).

4. The air conditioning unit according to claim 3, characterized in that, The outer wall of the outer shell is provided with a first baffle (21), and the inner wall of the air duct (13) is provided with a second baffle (131). The first baffle (21) and the second baffle (131) are arranged circumferentially along the bypass air duct (14) and form the air vent (33) between the first baffle (21) and the second baffle (131).

5. The air conditioning unit according to claim 2, characterized in that, The bypass ventilation path (14) is located above the first cooler (2).

6. The air conditioning unit according to any one of claims 2-5, characterized in that, The cross-sectional area of ​​the bypass ventilation path (14) accounts for 20%-65% of the cross-sectional area of ​​the air duct (13).

7. The air conditioning unit according to claim 6, characterized in that, The cross-section of the bypass ventilation path (14) is a square structure, which includes two first sides and two second sides. The outer wall of the outer shell forms one of the first sides. Along the extension direction of the first side, the length of the first side is the same as the length of the outer shell.

8. The air conditioning unit according to any one of claims 2-5, characterized in that, The inner wall of the air duct (13) includes a first wall (132), which together with the outer wall of the outer shell forms the bypass air passage (14). Along the length of the air duct (13), the cross-sectional profile of the first wall (132) and the cross-sectional profile of the outer wall of the outer shell are both straight.

9. The air conditioning unit according to claim 8, characterized in that, It also includes a heater (5) connected in the air duct (13), and the first cooler (2) and the bypass air duct (14) are both located on the side of the heater (5) facing the air inlet (11).

10. The air conditioning unit according to claim 9, characterized in that, The air duct (13) further includes a second wall surface (133) and a transition connection surface (134). The second wall surface (133) and the outer wall of the heater (5) enclose a bypass channel (18). The first wall surface (132), the transition connection surface (134) and the second wall surface (133) are connected sequentially along the length of the air duct (13). Along the length of the air duct (13), the cross-sectional profile of the second wall surface (133) is a straight line structure, and the cross-sectional profile of the transition connection surface (134) is an arc structure.

11. An air conditioning system, characterized in that, Includes the air conditioning unit as described in any one of claims 1-10.

12. A vehicle, characterized in that, Including the air conditioning system as described in claim 11.

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