Car air conditioning intake system and car air conditioning

Abstract

This utility model belongs to the field of automotive air conditioning technology, and discloses an automotive air conditioning intake system and an automotive air conditioner. The automotive air conditioning intake system includes a fresh air damper, a recirculation damper, and an air intake housing with internal flow channels. The air intake housing has a fresh air inlet and a recirculation inlet. The fresh air damper is rotatably disposed within the fresh air inlet. When the fresh air damper is in a first open position, the fresh air inlet is open; when the fresh air damper is in a first closed position, the fresh air inlet is blocked. The recirculation damper is rotatably disposed within the recirculation inlet, and has a second open position, a second closed position, and an intermediate position. When the recirculation damper is in the second open position, the recirculation inlet is open; when the recirculation damper is in the second closed position, the recirculation inlet is blocked; the intermediate position is located between the second open position and the second closed position. This automotive air conditioning intake system can switch between three air intake modes without causing airflow leakage, ensuring the high-efficiency and reliable operation of the automotive air conditioning system.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an automotive air conditioning intake system and an automotive air conditioner. Background Technology

[0002] With the rapid development of new energy vehicles, automakers have placed new demands on automotive air conditioning. Traditional automobiles primarily derive their heat from the engine. Because they are not concerned about heat loss or only need to consider the design and development cost of a single air conditioner unit, traditional automotive air conditioning systems often use only one internal / external air intake damper or separate dampers for fresh and recirculating air to adjust the air intake ratio. However, this approach often overlooks the risk of drafting due to high vehicle speeds or reduced blower speed. Specifically, some high-speed fresh air, without being axially drawn away by the blower, can directly enter the cabin through the internal recirculation vent, leading to reduced heat exchange efficiency in the air conditioning system.

[0003] Therefore, there is an urgent need to provide a new type of automotive air conditioning intake system and automotive air conditioning to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0004] The purpose of this invention is to provide an automotive air conditioning intake system that can prevent drafts and improve the heat exchange efficiency of the automotive air conditioning system.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The automotive air conditioning intake system includes a fresh air damper, a recirculation damper, and an intake box housing with internal flow channels. The intake box housing has spaced-apart fresh air inlets and recirculation inlets. The fresh air damper is rotatably disposed within the fresh air inlets. When the fresh air damper is in a first open position, the fresh air inlets are open; when the fresh air damper is in a first closed position, the fresh air damper blocks the fresh air inlets. The recirculation damper is rotatably disposed within the recirculation inlets and has a second open position, a second closed position, and an intermediate position. When the recirculation damper is in the second open position, the recirculation inlets... When the recirculation damper is in the open state and in the second closed position, the recirculation damper blocks the recirculation air inlet, and the intermediate position is located between the second open position and the second closed position; wherein, when the fresh air damper is in the first closed position and the recirculation damper is in the second open position, the vehicle air conditioning intake system is in internal recirculation mode; when the fresh air damper is in the first open position and the recirculation damper is in the second closed position, the vehicle air conditioning intake system is in fresh air mode; when the fresh air damper is in the first open position and the recirculation damper is in the intermediate position, the vehicle air conditioning intake system is in mixed air mode.

[0007] Optionally, the air inlet housing is provided with a guide air inlet pipe, which is connected to the fresh air inlet and is used to separate the fresh air inlet and the circulating air inlet; when the fresh air damper is in the first closed position, both ends of the fresh air damper are sealed to the inner wall of the guide air inlet pipe; the top of the circulating damper is sealed to the bottom wall of the guide air inlet pipe.

[0008] Optionally, a filter element is also provided inside the air inlet housing. Air entering the air inlet housing from the fresh air inlet or the circulating air inlet flows through the filter element.

[0009] Optionally, a middle partition is provided above the filter element. When the circulation damper is in the middle position, one end of the circulation damper is sealed to the bottom wall of the partition and the other end is sealed to the middle partition.

[0010] Optionally, when the aforementioned circulating damper is in the middle position, the position of the aforementioned fresh air damper can be adjusted so that the opening of the aforementioned fresh air inlet can be adjusted.

[0011] Optionally, the aforementioned fresh air inlet is located above the aforementioned circulating air inlet.

[0012] Optionally, the orientation of the fresh air inlet is the same as that of the circulating air inlet, and both are located at the end of the air inlet housing that is furthest from the driver's cabin along the direction of vehicle travel.

[0013] Optionally, a blower is also provided inside the air inlet housing, which drives air to enter the air inlet housing from the fresh air inlet or the circulating air inlet.

[0014] Optionally, the aforementioned air inlet housing is further provided with a fan volute, which is connected to the air outlet of the aforementioned blower.

[0015] Another objective of this invention is to provide an automotive air conditioner that includes an air intake system as described in any of the above embodiments.

[0016] Beneficial effects:

[0017] The automotive air conditioning intake system of this invention utilizes the cooperation of a fresh air damper and a recirculation damper to control the opening of the fresh air inlet and recirculation inlet of the internally configured air intake box housing. When the fresh air damper is in the first open position and the recirculation damper is in the second closed position, the automotive air conditioning intake system is in fresh air mode; when the fresh air damper is in the first closed position and the recirculation damper is in the second open position, the automotive air conditioning intake system is in internal recirculation mode; and when the fresh air damper is in the first open position and the recirculation damper is in the intermediate position, the automotive air conditioning intake system is in mixed air mode. This achieves switching between three intake modes, and the three modes are independent of each other, each controlled independently by the fresh air damper and the recirculation damper, preventing airflow leakage and ensuring the high-efficiency and reliable operation of the automotive air conditioning system. Attached Figure Description

[0018] Figure 1 This is an isometric view of the automotive air conditioning intake system provided in a specific embodiment of this utility model;

[0019] Figure 2 This is a longitudinal cross-sectional view of the automotive air conditioning intake system in fresh air mode according to a specific embodiment of this utility model;

[0020] Figure 3 This is a longitudinal cross-sectional view of the automotive air conditioning intake system in recirculation mode according to a specific embodiment of this utility model.

[0021] Figure 4 This is a longitudinal cross-sectional view of the automotive air conditioning intake system in mixed air mode according to a specific embodiment of this utility model.

[0022] In the picture:

[0023] 10. Air inlet housing; 11. Air inlet duct; 12. Filter element; 13. Intermediate partition; 101. Fresh air inlet; 102. Circulating air inlet; 21. Fresh air damper; 22. Circulating damper; 30. Blower; 31. Blower volute. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] Please refer to Figure 1 and Figure 2 The automotive air conditioning intake system includes a fresh air damper 21, a recirculation damper 22, and an intake housing 10 with an internal flow channel. The intake housing 10 has spaced-apart fresh air inlets 101 and recirculation inlets 102. The fresh air damper 21 is rotatably disposed within the fresh air inlet 101. When the fresh air damper 21 is in the first open position, the fresh air inlet 101 is open; when the fresh air damper 21 is in the first closed position, the fresh air damper 21 blocks the fresh air intake. Air inlet 101; the circulating damper 22 is rotatably disposed within the circulating air inlet 102, the circulating damper 22 having a second open position, a second closed position and an intermediate position; when the circulating damper 22 is in the second open position, the circulating air inlet 102 is in the open state, when the circulating damper 22 is in the second closed position, the circulating damper 22 blocks the circulating air inlet 102, and the intermediate position is located between the second open position and the second closed position.

[0029] Among them, such as Figure 2 As shown, when the fresh air damper 21 is in the first open position and the recirculation damper 22 is in the second closed position, the automotive air conditioning intake system is in fresh air mode; as Figure 3 As shown, when the fresh air damper 21 is in the first closed position and the recirculation damper 22 is in the second open position, the automotive air conditioning intake system is in recirculation mode; Figure 4 As shown, when the fresh air damper 21 is in the first open position and the circulating air damper 22 is in the middle position, the car air conditioning intake system is in mixed air mode.

[0030] In this embodiment, the automotive air conditioning intake system controls the opening of the fresh air inlet 101 and the recirculation inlet 102 of the air intake box housing 10, which has an internal flow channel, through the cooperation of the fresh air damper 21 and the recirculation damper 22. When the fresh air damper 21 is in the first open position and the recirculation damper 22 is in the second closed position, the automotive air conditioning intake system is in fresh air mode; when the fresh air damper 21 is in the first closed position and the recirculation damper 22 is in the second open position, the automotive air conditioning intake system is in internal recirculation mode; when the fresh air damper 21 is in the first open position and the recirculation damper 22 is in the intermediate position, the automotive air conditioning intake system is in mixed air mode. This achieves the switching of the three intake modes of the automotive air conditioning intake system. At the same time, the three modes are independent of each other and are independently controlled by the fresh air damper 21 and the recirculation damper 22, preventing airflow leakage and ensuring the high-efficiency and reliable operation of the automotive air conditioning system.

[0031] Furthermore, the aforementioned air intake housing 10 is provided with a guide air intake duct 11, which is connected to the aforementioned fresh air intake 101 and serves to separate the aforementioned fresh air intake 101 and the aforementioned recirculation air intake 102. When the aforementioned fresh air damper 21 is in the aforementioned first closed position, both ends of the aforementioned fresh air damper 21 are sealed to the inner wall of the guide air intake duct 11. The top end of the aforementioned recirculation damper 22 is sealed to the bottom wall of the aforementioned guide air intake duct 11. The arrangement of the guide air intake duct 11 can separate the fresh air intake 101 and the recirculation air intake 102, avoiding mutual interference between the air intakes of the two air intakes, while ensuring smoother communication between the fresh air intake 101 and the external air of the vehicle, and preventing blockage.

[0032] In this embodiment, as Figures 2 to 4 As shown, a filter element 12 is also provided inside the air intake housing 10. Air entering the air intake housing 10 from the fresh air inlet 101 or the recirculation air inlet 102 flows through the filter element 12. The filter element 12 can filter and remove impurities in the air, preventing blockage and damage to the air conditioning fan, while also improving air quality and enhancing the comfort of the occupants in the vehicle.

[0033] Optionally, a middle partition 13 is provided above the filter element 12. When the circulating damper 22 is in the middle position, one end of the circulating damper 22 is sealed to the bottom wall of the partition, and the other end is sealed to the middle partition 13. The middle partition 13 can further prevent the incoming air from the fresh air inlet 101 from flowing into the internal circulation air inlet 102 when the automotive air conditioning intake system is in mixed air mode, reducing the possibility of air leakage and improving the operational reliability and efficiency of the automotive air conditioning system.

[0034] Furthermore, when the aforementioned recirculation damper 22 is in the intermediate position, the position of the aforementioned fresh air damper 21 is adjustable, so that the opening degree of the aforementioned fresh air inlet 101 is adjustable. By adjusting the position of the fresh air damper 21, when the vehicle's air conditioning intake system is in mixed air mode, the ratio of fresh air to recirculated air in the mixed air is adjusted to ensure the comfort of passengers using the vehicle's air conditioning.

[0035] Please continue to refer to this. Figure 2 The aforementioned fresh air inlet 101 is positioned above the aforementioned circulating air inlet 102. This configuration is a common feature in automotive air conditioning systems in this field. Improving the aforementioned automotive air conditioning intake system based on this configuration can reduce mold opening costs, thereby reducing modification costs and production costs.

[0036] In this embodiment, the orientation of the fresh air inlet 101 is the same as that of the circulating air inlet 102, and both are located at the end of the air intake housing 10 away from the passenger compartment along the vehicle's travel direction. Compared to the traditional design where the circulating air inlet 102 faces the passenger compartment or faces upwards, this embodiment sets the circulating air inlet to face away from the passenger compartment, that is, closer to the firewall side. This keeps the passenger compartment user's auditory system away from the circulating air inlet 102, effectively reducing wind noise and optimizing the user's driving experience.

[0037] Furthermore, a blower 30 is also provided inside the aforementioned air inlet housing 10. The blower 30 is used to drive air into the air inlet housing 10 from the aforementioned fresh air inlet 101 or the aforementioned circulating air inlet 102. In this embodiment, the blower 30 is a centrifugal fan, which has the advantages of high power, stable operation, and low noise, and can significantly reduce wind noise, ensuring smooth air intake at the fresh air inlet 101 and the circulating air inlet 102.

[0038] Please continue to refer to this. Figure 1The aforementioned air inlet housing 10 is also provided with a fan volute 31, which is connected to the air outlet of the aforementioned blower 30. The fan volute 31 can gather the airflow generated by the high-speed rotation of the blower 30 impeller and guide it to the air outlet, ensuring the continuity of the gas delivery path; it can also convert some of the gas kinetic energy into static pressure energy, which can significantly increase the outlet pressure and enhance the overall aerodynamic efficiency of the blower 30.

[0039] This embodiment also provides an automotive air conditioner, which includes an automotive air conditioning intake system as described in any of the above solutions. This automotive air conditioner possesses the beneficial effects of the automotive air conditioning intake system described in any of the above solutions, which will not be elaborated further here. Specifically, this automotive air conditioner can switch between three air intake modes, and the three modes are independent of each other, controlled independently by the fresh air damper 21 and the recirculation damper 22, preventing airflow leakage and ensuring the high-efficiency and reliable operation of the automotive air conditioner.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air intake system for an automotive air conditioner, characterized by, include: An air inlet housing (10) with an internal flow channel is provided, and the air inlet housing (10) is provided with a fresh air inlet (101) and a circulating air inlet (102) arranged at intervals; A fresh air damper (21) is rotatably disposed within the fresh air inlet (101); when the fresh air damper (21) is in the first open position, the fresh air inlet (101) is in the open state; when the fresh air damper (21) is in the first closed position, the fresh air damper (21) blocks the fresh air inlet (101). A circulating damper (22) is rotatably disposed within the circulating air inlet (102). The circulating damper (22) has a second open position, a second closed position, and an intermediate position. When the circulating damper (22) is in the second open position, the circulating air inlet (102) is open. When the circulating damper (22) is in the second closed position, the circulating damper (22) blocks the circulating air inlet (102). The intermediate position is located between the second open position and the second closed position. When the fresh air damper (21) is in the first closed position and the recirculation damper (22) is in the second open position, the car air conditioning intake system is in internal recirculation mode; when the fresh air damper (21) is in the first open position and the recirculation damper (22) is in the second closed position, the car air conditioning intake system is in fresh air mode; when the fresh air damper (21) is in the first open position and the recirculation damper (22) is in the middle position, the car air conditioning intake system is in mixed air mode.

2. The automobile air conditioning air intake system according to claim 1, characterized in that, The air inlet housing (10) is provided with a flow guide air inlet pipe (11), which is connected to the fresh air inlet (101) and is used to separate the fresh air inlet (101) and the circulating air inlet (102); when the fresh air damper (21) is in the first closed position, both ends of the fresh air damper (21) are sealed to the inner wall of the flow guide air inlet pipe (11); the top of the circulating damper (22) is sealed to the bottom wall of the flow guide air inlet pipe (11).

3. The automobile air conditioning air intake system of claim 2, wherein, The air inlet housing (10) is also provided with a filter element (12). Air enters the air inlet housing (10) from the fresh air inlet (101) or the circulating air inlet (102) and flows through the filter element (12).

4. The automobile air conditioning air intake system of claim 3, wherein, A middle partition plate (13) is provided above the filter element (12). When the circulation damper (22) is in the middle position, one end of the circulation damper (22) is sealed to the bottom wall of the partition plate, and the other end is sealed to the middle partition plate (13).

5. The automobile air conditioning air intake system of claim 4, wherein, When the circulating damper (22) is in the middle position, the position of the fresh air damper (21) is adjustable so that the opening of the fresh air inlet (101) is adjustable.

6. The automotive air conditioning intake system according to claim 2, characterized in that, The fresh air inlet (101) is located above the circulating air inlet (102).

7. The automobile air conditioning air intake system of claim 6, wherein, The orientation of the fresh air inlet (101) is the same as that of the circulating air inlet (102), and both are located at the end of the air inlet housing (10) away from the driver's cab along the direction of vehicle travel.

8. The automobile air conditioning air intake system of claim 1, wherein, The air inlet housing (10) is also equipped with a blower (30), which is used to drive air into the air inlet housing (10) from the fresh air inlet (101) or the circulating air inlet (102).

9. The automotive air conditioning intake system according to claim 8, characterized in that, The air inlet housing (10) is also provided with a fan volute (31), which is connected to the air outlet of the blower (30).

10. An automotive air conditioner characterized by Including the automotive air conditioning intake system as described in any one of claims 1-9.

Images