Air duct structure for vehicle air conditioner, vehicle

Abstract

The present invention provides an air duct structure for a vehicle air conditioner and a vehicle. The air duct structure for the vehicle air conditioner includes an external circulation air inlet duct communicating with the external space, an internal circulation air inlet duct communicating with the internal space, and an internal air supply duct. A flow area adjusting component is provided on the duct wall of the external circulation air inlet duct. When the vehicle air conditioner operates in the internal and external circulation modes, the flow area adjusting component can reduce the flow area of the external circulation air inlet duct. According to the present invention, the flow area adjusting component can reduce the flow area of the external circulation air inlet duct when the vehicle air conditioner operates in the internal and external circulation modes, so as to, on the premise of ensuring the entry of external air into the vehicle, prevent the possible pollution of the internal air and the adverse fluctuations of the internal temperature and humidity caused by excessive entry of external air into the vehicle, and improve the temperature adjustment effect of the vehicle air conditioner.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle manufacturing, and particularly relates to an air duct structure for a vehicle air conditioner and a vehicle. Background Art

[0002] In the existing air intake structure of vehicle air conditioners, the outside and the inside of the vehicle are directly connected in the internal and external circulation modes. When the vehicle is running at high speed, the outside air forms a high pressure and rushes into the vehicle directly without passing through the filter, polluting the air inside the vehicle, and at the same time causing adverse fluctuations in the temperature and humidity inside the vehicle, and even reducing the performance of the air conditioner. Summary of the Invention

[0003] Therefore, the present invention provides an air duct structure for a vehicle air conditioner and a vehicle, which can overcome the deficiency in the related art that due to the connection between the internal circulation air duct and the external circulation air duct in the air duct structure, when the air conditioner operates in the internal and external circulation modes, a large amount of high-speed outside air rushes into the vehicle without passing through the filter, which may pollute the air inside the vehicle and cause fluctuations in the temperature and humidity inside the vehicle.

[0004] To solve the above problems, the present invention provides an air duct structure for a vehicle air conditioner, including an external circulation air intake duct communicating with the outside space of the vehicle, an internal circulation air intake duct communicating with the inside space of the vehicle, and an air supply duct inside the vehicle. A flow area adjusting component is provided on the duct wall of the external circulation air intake duct. When the vehicle air conditioner operates in the internal and external circulation modes, the flow area adjusting component can reduce the flow area of the external circulation air intake duct.

[0005] In some embodiments, the flow area adjusting component includes an elastic membrane disposed on the inner wall of the duct of the external circulation air intake duct, and the elastic membrane can elastically bulge toward the inside of the external circulation air intake duct under the action of the pressure difference between its inside and outside.

[0006] In some embodiments, the material of the elastic membrane is an elastic polymer material; and / or, the thickness of the elastic membrane is 0.5 mm to 5 mm.

[0007] In some embodiments, a baffle is provided on the inner side of the duct wall of the external circulation air intake duct. The baffle has a first position and a second position. When the vehicle air conditioner operates in the external circulation mode, the baffle is in the first position to prevent the elastic membrane from deforming toward the inside of the external circulation air intake duct. When the vehicle air conditioner operates in the internal and external circulation modes, the baffle is in the second position to allow the elastic membrane to deform toward the inside of the external circulation air intake duct.

[0008] In some embodiments, the air duct structure for the vehicle air conditioner further includes a switching damper for realizing the switching of the operation mode of the vehicle air conditioner. The change of the switching position of the switching damper can drive the baffle to switch between the first position and the second position.

[0009] In some embodiments, a connecting rod is hinged between the switching air damper and the baffle.

[0010] In some embodiments, the elastic membrane has two sections, and the two sections of the elastic membrane are respectively arranged on two opposite inner walls of the outer circulation air inlet duct. There are two baffles, and the two baffles are respectively arranged corresponding to the two sections of the elastic membrane one by one, and the two baffles are fixedly connected by a bracket.

[0011] In some embodiments, a clamping groove is arranged on the inner side of the duct wall of the outer circulation air inlet duct, and the baffle is inserted into the clamping groove.

[0012] In some embodiments, a filter element is arranged in the vehicle interior air supply duct.

[0013] The present invention also provides a vehicle, including the above-mentioned air duct structure for vehicle air conditioners.

[0014] The air duct structure for vehicle air conditioners and the vehicle provided by the present invention can reduce the flow area of the outer circulation air inlet duct when the vehicle air conditioner operates in the internal and external circulation modes, so as to, on the premise of ensuring that the outside air enters the vehicle interior, prevent the possible pollution of the vehicle interior air and the adverse fluctuations of the vehicle interior temperature and humidity caused by excessive amount of outside air entering the vehicle interior, and improve the temperature regulation effect of the vehicle air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic internal structure diagram of the air duct structure for vehicle air conditioners according to an embodiment of the present invention (the corresponding operating mode of the vehicle air conditioner is the external circulation mode);

[0016] Figure 2 is Figure 1 a schematic cross-sectional structure diagram taken along A-A in

[0017] Figure 3 is a schematic internal structure diagram of the air duct structure for vehicle air conditioners according to an embodiment of the present invention (the corresponding operating mode of the vehicle air conditioner is the internal and external circulation mode);

[0018] Figure 4 is a schematic internal structure diagram of the air duct structure for vehicle air conditioners according to an embodiment of the present invention (the corresponding operating mode of the vehicle air conditioner is the internal circulation mode).

[0019] The reference numerals are shown as:

[0020] 1. Outer circulation air inlet duct; 11. Clamping groove; 2. Inner circulation air inlet duct; 3. Vehicle interior air supply duct; 31. Filter element; 41. Elastic membrane; 42. Baffle; 43. Connecting rod; 44. Bracket; 45. Second ball hinge; 5. Switching air damper; 51. First ball hinge. Detailed implementation mode

[0021] Referring to Figures 1 to 4 As shown, according to an embodiment of the present invention, a duct structure for a vehicle air conditioner is provided, which includes an external circulation intake air duct 1 communicating with the external space of the vehicle, an internal circulation intake air duct 2 communicating with the internal space of the vehicle, and an internal air supply duct 3. The duct wall of the external circulation intake air duct 1 is provided with a flow area adjustment component. When the vehicle air conditioner operates in the internal and external circulation modes, the flow area adjustment component can reduce the flow area of the external circulation intake air duct 1. In this technical solution, the flow area adjustment component can reduce the flow area of the external circulation intake air duct 1 when the vehicle air conditioner operates in the internal and external circulation modes, so as to ensure that the amount of external air entering the vehicle is too large, which may cause pollution to the internal air of the vehicle and adverse fluctuations to the internal temperature and humidity of the vehicle, and improve the temperature adjustment effect of the vehicle air conditioner.

[0022] In some embodiments, the flow area adjustment component includes an elastic membrane 41 disposed on the inner wall of the duct of the external circulation intake air duct 1. The elastic membrane 41 can elastically protrude towards the inside of the external circulation intake air duct 1 under the action of the pressure difference between its inside and outside. It can be understood that the duct wall of the external circulation intake air duct 1 corresponding to the installation position of the elastic membrane 41 has a corresponding opening to ensure that the outside of the elastic membrane 41 can communicate with the external environment, so that a pressure difference can be formed between the inside and outside of the elastic membrane 41 when there is a high-speed air flow passing through the external circulation intake air duct 1. It can be understood that the high-speed flowing air will have a smaller pressure, and the elastic protrusion is formed because the pressure outside the elastic membrane 41 is greater than the pressure inside it. In this technical solution, by utilizing the physical characteristics between air flow and pressure, the elastic membrane 41 is arranged so that it can form an elastic protrusion under the action of the pressure difference, thereby realizing the reduction of the flow area of the external circulation intake air duct 1 in the internal and external circulation modes and effectively preventing the influx of a large amount of external air. In some embodiments, the material of the elastic membrane 41 is an elastic polymer material, such as common rubber, and the thickness of the elastic membrane 41 is 0.5 mm to 5 mm, so that the elastic membrane 41 has both sufficient strength and sufficient elastic deformation ability.

[0023] To prevent the adverse effects caused by the reduction of the flow area when the vehicle air conditioner operates in the external circulation mode, in some embodiments, a baffle 42 is provided on the inner side of the duct wall of the external circulation air inlet duct 1. The baffle 42 has a first position and a second position. When the vehicle air conditioner operates in the external circulation mode, the baffle 42 is in the first position to prevent the elastic membrane 41 from deforming towards the inner side of the external circulation air inlet duct 1. When the vehicle air conditioner operates in both the external and internal circulation modes, the baffle 42 is in the second position to allow the elastic membrane 41 to deform towards the inner side of the external circulation air inlet duct 1. That is, when the vehicle air conditioner operates in the external circulation mode, the baffle 42 is on the inner side of the elastic membrane 41, thereby preventing the elastic protrusion of the elastic membrane 41 towards the inner side of the duct, and further ensuring the introduction amount of outdoor air in this mode.

[0024] Of course, a corresponding driving mechanism can be separately provided for the position switching of the baffle 42. However, separately providing a corresponding driving mechanism is not conducive to the compactness of the structure and the reduction of costs. It can be understood that the duct structure for the vehicle air conditioner further includes a switching damper 5 for realizing the switching of the operation modes of the vehicle air conditioner. At this time, preferably, the change in the switching position of the switching damper 5 can drive the baffle 42 to switch between the first position and the second position. That is, by controlling the position of the switching damper 5, the linkage switching of the position of the baffle 42 is synchronously realized, simplifying the structure and eliminating the need to separately provide a corresponding driving mechanism, thus saving costs. In some embodiments, a connecting rod 43 is hinged between the switching damper 5 and the baffle 42. Specifically, one end of the connecting rod 43 is hinged to the switching damper 5 through a first ball joint 51, and the other end of the connecting rod 43 is hinged to the baffle 42 through a second ball joint 45.

[0025] In some embodiments, the elastic membrane 41 has two sections, and the two sections of the elastic membrane 41 are respectively arranged on two opposite duct inner walls of the external circulation air inlet duct 1. There are two baffles 42, and the two baffles 42 are respectively arranged corresponding to the two sections of the elastic membrane 41 one by one, and the two baffles 42 are fixedly connected through a bracket 44, so that the simultaneous driving of the two baffles 42 can be realized by driving the position switching of one baffle 42, further simplifying the structure.

[0026] A card slot 11 is provided on the inner side of the duct wall of the external circulation air inlet duct 1, and the baffle 42 is inserted into the card slot 11. The baffle 42 realizes reliable and smooth switching between the first position and the second position under the guidance of the card slot 11. In some embodiments, a filter element 31 is provided in the vehicle interior air supply duct 3, which can filter and clean the air flows of the external circulation air inlet duct 1 and the internal circulation air inlet duct 2.

[0027] When the user selects the internal circulation mode, such asFigure 4 As shown, the switching air door 5 rotates towards the outer circulation air duct to isolate the entry of outside air; when the user selects the internal and external circulation mode, such as Figure 3 As shown, the switching air door 5 is in the middle of the internal and external circulation air ducts, and internal and external air can enter simultaneously. In the traditional existing solution, when the vehicle speed is relatively high, a large amount of outside air rushes into the vehicle and directly enters the vehicle through the internal circulation air inlet duct 2 without passing through the filter element 31, affecting the air quality inside the vehicle. At the same time, the influx of a large amount of outside air will also affect the cooling / heating effect of the air conditioner; when using the structure of the present invention, when the vehicle is traveling at a high speed, the wind speed in the outer circulation air inlet duct 1 is relatively high, and the high wind speed results in a small pressure, causing the elastic membrane 41 to contract towards the inner side of the outer circulation air inlet duct 1, reducing the air inlet cross-section (i.e., the flow-through area) of the outer circulation air inlet duct 1, thereby reducing the entry of outside air and avoiding the impact on the air quality of the vehicle air conditioner and stabilizing the temperature and humidity inside the vehicle. When the user selects the outer circulation mode, such as Figure 1 As shown, the switching air door 5 rotates towards the internal circulation air inlet duct 2 to isolate the air inside the vehicle. The rotation of the switching air door 5 drives the baffle 42 to move through the connecting rod 43, which is located inside the elastic membrane 41 to prevent it from expanding and deforming inwards; when the outer circulation is in progress, air passes through the outer circulation air inlet duct 1, passes through the filter element 31 (specifically, it can be a filter screen), and then enters the vehicle air supply duct 3. When the vehicle is traveling at a high speed, the pressure inside the duct is small, and the baffle 42 prevents the elastic membrane 41 from expanding into the duct, ensuring smooth outer circulation air inlet.

[0028] According to an embodiment of the present invention, there is also provided a vehicle, including the above-mentioned air duct structure for a vehicle air conditioner.

[0029] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0030] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and variations can be made without departing from the technical principle of the present invention, and these improvements and variations should also be regarded as within the protection scope of the present invention.

Claims

1. An air duct structure for a vehicle air conditioner, characterized in that, It includes an external circulation air inlet duct (1) communicating with the external space of the vehicle, an internal circulation air inlet duct (2) communicating with the internal space of the vehicle, and an internal air supply duct (3). The duct wall of the external circulation air inlet duct (1) is provided with a flow area adjusting component. When the vehicle air conditioner operates in the internal and external circulation modes, the flow area adjusting component can reduce the flow area of the external circulation air inlet duct (1). The flow area adjusting component includes an elastic membrane (41) arranged on the inner wall of the duct of the external circulation air inlet duct (1). The elastic membrane (41) can elastically bulge towards the inner side of the external circulation air inlet duct (1) under the action of the pressure difference between its inner and outer sides. When there is a high-speed air flow passing through the external circulation air inlet duct (1), a pressure difference is formed between the inner and outer sides of the elastic membrane (41). The high-speed flowing air will have a relatively low pressure. The elastic bulge is formed because the pressure on the outer side of the elastic membrane (41) is greater than the pressure on its inner side. By utilizing the physical characteristics between air flow and pressure, the elastic membrane (41) is arranged so that it can form an elastic bulge under the action of the pressure difference, thereby realizing the reduction of the flow area of the external circulation air inlet duct (1) in the internal and external circulation modes and effectively preventing a large amount of external air from flowing in.

2. The air duct structure for a vehicle air conditioner according to claim 1, wherein The material of the elastic membrane (41) is an elastic polymer material; and / or, the thickness of the elastic membrane (41) is 0.5 mm to 5 mm.

3. The air duct structure for a vehicle air conditioner according to claim 1, characterized in that, A baffle (42) is arranged on the inner side of the duct wall of the external circulation air inlet duct (1). The baffle (42) has a first position and a second position. When the vehicle air conditioner operates in the external circulation mode, the baffle (42) is in the first position to prevent the elastic membrane (41) from deforming towards the inner side of the external circulation air inlet duct (1). When the vehicle air conditioner operates in the internal and external circulation modes, the baffle (42) is in the second position to allow the elastic membrane (41) to deform towards the inner side of the external circulation air inlet duct (1).

4. The air duct structure for a vehicle air conditioner according to claim 3, characterized in that, It further includes a switching damper (5) for realizing the switching of the operating mode of the vehicle air conditioner. The change of the switching position of the switching damper (5) can drive the baffle (42) to switch between the first position and the second position.

5. The air duct structure for a vehicle air conditioner according to claim 4, characterized in that, A connecting rod (43) is hinged between the switching damper (5) and the baffle (42).

6. The air duct structure for a vehicle air conditioner according to claim 4, characterized in that, The elastic membrane (41) has two sections. The two sections of the elastic membrane (41) are respectively arranged on the two opposite inner walls of the external circulation air inlet duct (1). There are two baffles (42). The two baffles (42) are respectively arranged corresponding to the two sections of the elastic membrane (41), and the two baffles (42) are fixedly connected by a bracket (44).

7. The air duct structure for a vehicle air conditioner according to claim 3, wherein A clamping groove (11) is arranged on the inner side of the duct wall of the external circulation air inlet duct (1). The baffle (42) is inserted into the clamping groove (11).

8. The air duct structure for a vehicle air conditioner according to claim 1, characterized in that, A filter element (31) is arranged in the internal air supply duct (3).

9. A vehicle, characterized in that, It includes the air duct structure for a vehicle air conditioner according to any one of claims 1 to 8.

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