Noise reduction anti-channeling automobile air conditioner air inlet shell, automobile air conditioner and automobile

Abstract

The utility model provides a kind of noise reduction anti channeling flow automobile air conditioner air inlet shell, automobile air conditioner and car belongs to automobile air conditioner technical field, the air conditioner air inlet shell includes: outer circulation air inlet, inner circulation air inlet extension, inner circulation air door and outer circulation air door;The inner circulation air inlet extension is the structure formed by lengthening original inner circulation air inlet length, the inner circulation air door is set to control the on-off of inner circulation airflow corresponding the inner circulation air inlet extension, the outer circulation air door is set to control the on-off of outer circulation airflow corresponding the outer circulation air inlet.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, specifically to a noise-reducing and anti-flow-crossing automotive air conditioning intake housing, an automotive air conditioner, and an automotive. Background Technology

[0002] With the continuous development of the automotive industry and the steady improvement of people's living standards, consumers are demanding increasingly stringent requirements for the comfort and health aspects of automobiles. Among these, reducing in-vehicle noise and mitigating the impact of high-speed airflow from outside the vehicle on the cockpit have become core issues that urgently need to be addressed to improve driving comfort.

[0003] When a car's air conditioning is running, the combined noise from the blower, airflow, and other components mixes with the outside airflow and is directly transmitted into the vehicle, significantly reducing driving and riding comfort. Against this backdrop, car air conditioning systems that offer low noise, prevent drafts, and boast excellent overall performance are increasingly becoming an important consideration for consumers when purchasing a car.

[0004] Structurally, the air intake housing of a car's air conditioning system has two key air inlets: an external recirculation inlet and an internal recirculation inlet. The external recirculation inlet draws air from outside the vehicle, while the internal recirculation inlet is located outside the internal recirculation damper and has a relatively short intake path. This structural feature leads to the following: 1. When the air conditioning is switched to internal recirculation mode, the mechanical noise generated by the blower and the airflow noise generated by the high-speed airflow lose their effective buffering path and are directly transmitted into the cabin, significantly affecting the auditory experience of the occupants and the overall comfort of the cabin. 2. When both the internal and external recirculation dampers are open simultaneously, the high-speed airflow from outside the vehicle can easily directly impact the cabin, and there are issues of draft and airflow turbulence, reducing cabin comfort.

[0005] Chinese patent document CN206664194U discloses a noise-reducing automotive air conditioning intake housing, comprising an intake housing with an internal recirculation air inlet and an external recirculation air inlet. The internal recirculation air inlet is located on the same side as the external recirculation air inlet and faces forward away from the driver's cabin, or it is located vertically below the external recirculation air inlet and faces downwards. This solution only changes the direction of the original internal recirculation air inlet, resulting in poor noise reduction and airflow prevention. Therefore, a new air conditioning intake housing is urgently needed to further reduce the noise during air conditioning operation. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a noise-reducing and anti-flow-through automotive air conditioning intake housing, an automotive air conditioner, and an automotive.

[0007] According to the present invention, a noise-reducing and anti-flow-crossing automotive air conditioning intake housing includes: an intake housing body, wherein the intake housing body is provided with an external circulation air intake port, an internal circulation air intake extension port, an internal circulation damper and an external circulation damper; The internal circulation air intake extension port includes an extension section, one end of which is the internal circulation air intake port. The internal circulation damper is configured corresponding to the internal circulation air intake extension port to control the flow of internal circulation air. The external circulation damper is configured corresponding to the external circulation air intake port to control the flow of external circulation air. The internal circulation air intake extension port is made of a sound-absorbing material.

[0008] The internal circulation air intake extension port is made of plastic, and this plastic material is the same as the commonly used material for the automotive air conditioning intake housing.

[0009] Preferably, the extended internal circulation air inlet has an adjusted air intake direction, and the air intake direction is adjusted by an angle of 0°-90° relative to the original internal circulation air inlet.

[0010] Preferably, the sound-absorbing material includes PET, PE, and natural fiber cotton.

[0011] According to the present invention, an automotive air conditioner adopts the aforementioned noise-reducing and anti-flow-blocking automotive air conditioner intake housing.

[0012] According to the present invention, a car includes the aforementioned car air conditioner.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By extending the air intake and adding sound-absorbing material, the air intake casing of this air conditioner blocks the direct transmission path of noise and absorbs / weakens noise energy, effectively reducing the noise intensity entering the cockpit; 2. This air conditioning intake housing reduces airflow turbulence by changing the airflow direction, preventing high-speed airflow from outside the vehicle from directly impacting the cabin, thus avoiding discomfort caused by drafts and comprehensively improving the comfort and practicality of the car's air conditioning. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 These are schematic diagrams of embodiments 1 and 2 of this utility model. Figure 2 These are schematic diagrams of embodiments 3 and 4 of this utility model. Detailed Implementation The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0015] This utility model takes "extending the length of the internal circulation air inlet" as its core foundation. Through the combination and optimization of "material selection (plastic / sound-absorbing material, with PET, PE and natural fiber cotton being preferred for sound-absorbing materials)" and "air intake direction adjustment (0°-90°, with the specific angle adapted to the vehicle's air conditioning installation space)", four targeted technical solutions are formed. All of them aim to achieve the dual goals of "noise reduction" and "preventing airflow and turbulence". Each solution consists of the following components: external circulation air inlet 1, internal circulation air inlet extension 2, internal circulation damper 3 and external circulation damper 4.

[0016] Option 1: Extend the internal air circulation inlet with plastic material (no directional adjustment) Reference Figure 1 This design only extends the length of the internal air intake without changing the original air intake direction. The extended internal air intake uses common plastic materials for air intake housings, such as PP, ABS, POM, and PA. By extending the airflow path, the propagation energy of blower mechanical noise and airflow noise is reduced, initially blocking noise from directly entering the vehicle interior. At the same time, the extended structure can form a basic obstruction for high-speed airflow, reducing the risk of cross-flow.

[0017] Option 1 is suitable for vehicle air conditioning systems with basic requirements for noise reduction and anti-channel leakage, and where cost control is strict. In one specific implementation, it includes: 1. Structural Assembly: The internal recirculation air intake extension port 2 (made of plastic, the same material as the housing) is integrally molded or detachably connected to the automotive air conditioning intake housing, ensuring a seamless connection between the extension port and the original internal recirculation air intake port without changing the original air intake direction. See the structural reference after assembly. Figure 1 .

[0018] 2. Operating process in recirculation mode: When the air conditioner is switched to recirculation mode, the recirculation damper 3 is fully opened, and the external circulation damper 4 is simultaneously closed to prevent outside air from entering the vehicle. The air in the cabin flows in a preset direction (e.g., Figure 1 5) The airflow flows to the internal circulation intake extension port 2. The airflow path in the extension port is longer than that of the original non-extended structure (the specific length is designed according to the shell size). The mechanical noise generated by the blower and the airflow noise generated by the high-speed airflow are partially blocked by the plastic material when passing through the extension port. The noise propagation energy is weakened, and the noise intensity transmitted into the cockpit is reduced, thus avoiding the noise directly impacting the driver and passengers.

[0019] 3. Operating process in simultaneous internal and external circulation damper opening mode: When the internal and external circulation dampers are opened simultaneously (such as when the vehicle needs rapid air exchange), outside air enters through the external circulation air intake 1, and the air inside the cabin enters through the internal circulation air intake extension 2. The extended plastic extension 2 can physically block the high-speed airflow from outside the vehicle, reducing the impact of the high-speed airflow directly towards the cabin. At the same time, it guides the internal and external circulation airflows to flow along their respective paths, reducing turbulence when airflows converge and avoiding discomfort caused by drafts (such as direct blowing of cold / hot air).

[0020] Option 2: Extend the internal air circulation inlet with sound-absorbing material (no directional adjustment) Reference Figure 1 This design only extends the length of the internal air intake without changing the original air intake direction; the extended internal air intake uses PET sound-absorbing material. Building upon the "extended path to reduce noise" approach in Option 1, this design further absorbs a significant amount of airflow and mechanical noise by utilizing the sound-absorbing properties of the sound-absorbing material, resulting in a noise reduction effect superior to Option 1. The sound-absorbing material also buffers airflow impact, providing better anti-channeling performance.

[0021] Option 2 is suitable for vehicle air conditioning systems with high noise reduction requirements, advanced anti-channeling capabilities, and a reasonable willingness to increase costs. In one specific implementation, it includes: 1. Structural Assembly: Assemble the internal circulation air intake extension port 2 (made of sound-absorbing material) with the air intake housing, ensuring a tight seal and without changing the original air intake direction. See the structural reference after assembly. Figure 1 The PET material optimizes sound absorption performance, and its thickness matches that of the plastic extension opening (ensuring structural compatibility).

[0022] 2. Working process in internal circulation mode: Internal circulation damper 3 is open, external circulation damper 4 is closed, and airflow follows... Figure 1 The sound-absorbing material extends into the 5th channel from the center. The microporous structure of the sound-absorbing material can absorb noise waves in the airflow, significantly reducing airflow noise and blower mechanical noise, ultimately lowering the noise intensity entering the cockpit. At the same time, extending the path further weakens the noise energy, achieving dual noise reduction through "absorption + weakening".

[0023] 3. Working process in the mode of simultaneous opening of internal and external circulation dampers: When the high-speed airflow from outside the vehicle enters through the external circulation air intake 1, the sound-absorbing material extension port 2 not only blocks the airflow impact through the extension structure, but its flexible material properties can also buffer the airflow pressure, reduce the additional noise generated by airflow turbulence, and at the same time prevent the high-speed airflow from directly entering the cabin. The discomfort of airflow impact to the driver and passengers is reduced, and the anti-flow and anti-turbulence effects are better than those of the first scheme.

[0024] Option 3: Extend the internal air circulation inlet with plastic material (including direction adjustment) Reference Figure 2The length of the internal air intake is extended, and the air intake direction of the original internal air intake is adjusted from 0° to 90° (the adjustment angle is determined based on the actual installation space and airflow optimization requirements of the vehicle). The extended internal air intake uses the same plastic material as the air intake housing. Building upon Solution 1's "extending the path to reduce noise and prevent crossflow," the direction adjustment blocks the path of noise "straight-line propagation to the cockpit," further weakening noise transmission. At the same time, the adjusted direction guides the orderly flow of air, reducing turbulence when the internal and external airflows converge, and improving the anti-turbulence effect.

[0025] Option 3 is suitable for vehicle air conditioning systems that require turbulence reduction and noise propagation path optimization, but have strict cost control requirements (such as compact vehicles with limited installation space). In one specific implementation, it includes: 1. Structural Assembly: Assemble the internal circulation air intake extension port 2 (plastic material) to the air intake housing, and simultaneously adjust the air intake direction of the extension port to 45° from the original direction (example angle, which can be adjusted within the range of 0°-90° depending on the installation space). Ensure that the adjustment does not interfere with other air conditioning components. See the structural reference after assembly. Figure 2 .

[0026] 2. Working process in internal circulation mode: Internal circulation damper 3 is open, external circulation damper 4 is closed, and airflow follows... Figure 2 The adjusted direction leads into extension port 2. The adjusted direction creates a "non-straight" path between the airflow and the cockpit, forcing noise to detour through the extension port to reach the cockpit, further blocking direct noise transmission. At the same time, the extended path weakens the noise energy, ultimately improving the noise reduction effect compared to scheme one.

[0027] 3. Working process in the mode of simultaneous opening of internal and external circulation dampers: After the direction adjustment, the extended port 2 can guide the internal circulation airflow to flow away from the impact direction of the external circulation airflow. The convergence area of ​​the internal and external circulation airflows is transferred from the vicinity of the cockpit to the outside of the extended port, reducing airflow turbulence (the degree of turbulence is further reduced compared with the first scheme). At the same time, the physical blocking effect of the plastic extended port prevents the high-speed airflow outside the vehicle from directly impacting the cockpit, and the anti-turbulence and anti-flow-crossing effects are improved in synergy.

[0028] Option 4: Extend the internal air circulation inlet with sound-absorbing material (including direction adjustment) Reference Figure 2The internal air intake length is extended, and the air intake direction of the original internal air intake is adjusted from 0° to 90°; the extended internal air intake uses sound-absorbing material. This triple optimization of "extended path, sound-absorbing material, and direction adjustment" achieves a dual noise reduction effect of "direction blocking noise transmission + material noise absorption + extended path noise reduction." Simultaneously, through the triple action of "extended structure + direction guidance + material buffering," it maximizes the reduction of airflow turbulence and high-speed airflow intrusion from outside the vehicle, making it the solution with the best noise reduction and anti-runaway effect among the four options.

[0029] Option 4 is suitable for mid-to-high-end vehicle air conditioning systems that have the highest requirements for noise reduction, anti-channel flow, and anti-turbulence. In one specific implementation, it includes: 1. Structural Assembly: Assemble the internal circulation air intake extension port 2 (silencing material) with the air intake housing, and simultaneously adjust the air intake direction to 60° (example angle, adjustable from 0° to 90°). Ensure a smooth airflow path after direction adjustment. See the structural reference after assembly. Figure 2 .

[0030] 2. Working process in internal circulation mode: Internal circulation damper 3 is open, external circulation damper 4 is closed, and airflow follows... Figure 2 The adjusted direction leads to the extended port 2 of the sound-absorbing material. The adjusted direction blocks the straight-line propagation of noise, the PET material absorbs a large amount of noise, and the extended path weakens the noise energy. The combined effect of these three factors significantly reduces the noise intensity entering the cockpit, making it the best among the four solutions in terms of noise reduction.

[0031] 3. Working process in the mode of simultaneous opening of internal and external circulation dampers: Direction adjustment guides the orderly flow of internal and external circulation airflow, sound-absorbing material buffers the impact of high-speed airflow outside the vehicle, and the extended structure blocks the direct entry of airflow. With the combined effect of these three factors, the impact intensity of high-speed airflow outside the vehicle on the cockpit is greatly reduced, completely avoiding driving discomfort caused by draft. At the same time, the sound-absorbing material absorbs the additional noise generated by airflow turbulence, achieving the optimal driving experience of "no draft, low noise, and minimal turbulence".

[0032] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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.

[0033] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A noise-reducing and anti-flow-blocking automotive air conditioning intake housing, characterized in that, include: The air intake housing body is provided with an external circulation air intake port, an internal circulation air intake extension port, an internal circulation damper and an external circulation damper. The internal circulation air intake extension port includes an extension section, one end of which is the internal circulation air intake port. The internal circulation damper is configured corresponding to the internal circulation air intake extension port to control the flow of internal circulation air. The external circulation damper is configured corresponding to the external circulation air intake port to control the flow of external circulation air. The internal circulation air intake extension port is made of a sound-absorbing material.

2. The noise-reducing and anti-flow-crossing automotive air conditioning intake housing according to claim 1, characterized in that, The internal circulation air intake extension port is made of plastic, and the plastic material is the same as that of the car air conditioning intake housing.

3. The noise-reducing and anti-flow-crossing automotive air conditioning intake housing according to claim 1, characterized in that, The extended internal circulation air intake has an adjusted air intake direction, and the air intake direction is adjusted by an angle of 0°-90° relative to the original internal circulation air intake.

4. The noise-reducing and anti-flow-crossing automotive air conditioning intake housing according to claim 2, characterized in that, The extended internal circulation air intake has an adjusted air intake direction, and the air intake direction is adjusted by an angle of 0°-90° relative to the original internal circulation air intake.

5. The noise-reducing and anti-flow-blocking automotive air conditioning intake housing according to claim 1, characterized in that, The sound-absorbing materials include PET, PE, and natural fiber cotton.

6. An automotive air conditioner, characterized in that, The noise-reducing and anti-flow-blocking automotive air conditioning intake housing is adopted as described in any one of claims 1 to 5.

7. A car, characterized in that, Including the automotive air conditioner as described in claim 5.

Images