Air door for HVAC air conditioning cabinet and HVAC air conditioning cabinet
The redesigned HVAC air conditioning box wind door addresses uneven temperature distribution by guiding airflow uniformly, enhancing temperature consistency and linearity, thereby improving passenger comfort.
Patent Information
- Application Number
- CN202422539732.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The damper design of the existing HVAC air conditioning box causes uneven mixing of cold and hot air, large air outlet temperature difference, low linearity of temperature changes, affecting the comfort of the car.
A damper including a air guide plate, a wind tread and a convex rib structure is designed. The air guide plate connects the air guide section and the extension section through an arc-shaped transition section. The air guide plate gradually changes the intersection position of the cold air and the hot air during the rotation of the damper to avoid uneven mixing of the cold air and the hot air in the main air outlet passage.
It improves the consistency of air outlet temperature and the linearity of temperature changes, reduces temperature fluctuations in the car, and improves driving comfort and stability of the air conditioner box.
Smart Images
Figure CN223100405U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle ventilation devices, and particularly relates to a damper for an HVAC air conditioning box and an HVAC air conditioning box. Background Art
[0002] The HVAC air conditioning box is one of the important components of a vehicle air conditioner. Its housing is composed of a left housing and a right housing connected by snap connection. The housing has a cold air inlet, a hot air inlet, and a plurality of air outlets; as Figure 1 shown, inside the housing 1, a partition protruding inward from the housing wall divides it into a cold air passage 2, a hot air passage 3, an air outlet main passage 4, and a plurality of air outlet bypass passages 5. The air outlet bypass passages extend inward from the corresponding air outlets 6 and communicate with one end of the air outlet main passage. The other end of the air outlet main passage is respectively communicated with one end of the cold air passage and the hot air passage in a Y shape. A damper 7 that can be opened inward is rotatably provided in the cold air passage near the communication point. The rotating shaft 8 of the damper is located on the side of the cold air passage close to the hot air passage. The other ends of the cold air passage and the hot air passage respectively extend to the cold air inlet and the hot air inlet; an evaporator is provided at the cold air inlet or in the cold air passage to provide cold air, and a heater is provided at the hot air inlet or in the hot air passage to provide hot air. When the evaporator works, the damper is opened, and the heater stops, the air conditioning box outputs cold air. When the damper is closed and the heater works, the air conditioner outputs hot air. When both the evaporator and the heater work, the air outlet temperature of the air conditioning box is adjusted by adjusting the opening degree of the damper.
[0003] The air volume of the cold air passage changes with the opening degree of the damper, causing the mixing ratio of cold air and hot air in the air outlet main passage to change, thereby changing the air outlet temperature of the air conditioning box; the structure of the existing damper is generally as Figure 2 shown, including a flat damper body 9 and a rotating shaft 8 connected to one side of the damper body in the width direction. As Figure 2 shown, since the intersection of the cold air passage and the hot air passage remains unchanged, and the gas pressure of the cold air is lower than that of the hot air, when the opening degree of the damper changes and the air volume of the cold air passage decreases, the cold air in the air outlet main passage is easily pushed by the hot air to the side away from the hot air passage. Then, the side close to the hot air passage is mainly occupied by the hot air, resulting in uneven mixing of cold air and hot air in the air outlet main passage, a large temperature difference between the air outlets, and a low linearity of temperature change, which easily causes temperature fluctuations inside the vehicle and poor comfort. Summary of the Invention
[0004] Aiming at the above deficiencies of the prior art, the purpose of the utility model is to provide a damper for an HVAC air conditioning box and an HVAC air conditioning box, solve the technical problem that the existing damper easily causes a large temperature difference between the air outlets of the air conditioning box, and achieve the effect of improving the temperature consistency of each air outlet and the linearity of air outlet temperature change.
[0005] To solve the above technical problems, the present utility model adopts the following technical solutions:
[0006] A damper for an HVAC air handling unit, comprising a damper body in the shape of a rectangular plate. One side in the width direction of the damper body is connected with a rotating shaft, the axial direction of the rotating shaft corresponds to the length direction of the damper body, and the damper body and the axis of the rotating shaft are coplanar; a wind guiding plate is connected to the rotating shaft, the length direction of the wind guiding plate corresponds to the axial direction of the rotating shaft, the length of the wind guiding plate matches the length of the damper body, and the width direction of the wind guiding plate corresponds to the width direction of the damper body.
[0007] Further, the wind guiding plate includes a wind guiding section, a transition section and an extension section connected in sequence along its width direction. The wind guiding section is connected to the rotating shaft, and the included angle between the wind guiding section and the damper body is an obtuse angle. The transition section is arc-shaped and is smoothly connected to the wind guiding section and the extension section respectively. The concave surface of the transition section faces the side where the included angle increases, and the extension section forms an obtuse angle or is parallel to the damper body.
[0008] Further, a wind guiding platform is formed by convexity on the surface of the damper body close to the wind guiding plate in the thickness direction. The free end face of the wind guiding platform is a wind guiding surface, and the wind guiding surface is inclined in the width direction of the damper body. The highest point of the wind guiding surface is close to the wind guiding plate and lower than the transition section.
[0009] Further, in the area corresponding to the wind guiding platform on the surface of the damper body away from the wind guiding plate in the thickness direction, there is a grid groove.
[0010] Further, a plate-shaped first rib and a second rib are formed by convexity on the wind guiding surface. The heights of the first rib and the second rib are lower than that of the extension section. The length direction of the ribs corresponds to the length direction of the damper body, and the two ribs are arranged at intervals in the width direction of the damper body.
[0011] Further, in the width direction of the damper body, the first rib is located in the middle of the wind guiding surface. The first rib has a convex structure with the middle in the length direction higher than the two ends. A reinforcing column with a diameter larger than the thickness of the first rib is formed by convexity on the wind guiding surface. The reinforcing column is located in the middle of the length direction of the first rib and is integrally connected with the first rib.
[0012] Further, the second rib is close to the highest point of the wind guiding surface, and the side of the second rib away from the first rib is transitionally connected to the wind guiding surface through an inclined surface.
[0013] The present utility model further includes an HVAC air handling unit, which comprises a housing. The housing is provided with a cold air inlet, a hot air inlet and a plurality of air outlets. Inside the housing of the air handling unit, there are a cold air passage, a hot air passage, a main air outlet passage and a plurality of air outlet bypass passages. The air outlet bypass passages extend inward from the corresponding air outlets and are communicated with one end of the main air outlet passage. The other end of the main air outlet passage is respectively communicated with one end of the cold air passage and the hot air passage. A wind door that can be opened inward is rotatably arranged in the cold air passage near the communication part, and the rotating shaft of the wind door is located on the side of the cold air passage close to the hot air passage. The other ends of the cold air passage and the hot air passage respectively extend to the cold air inlet and the hot air inlet; the wind door adopts the wind door for the HVAC air handling unit as described above, and the concave surface of the transition section faces the communication part between the hot air passage and the main air outlet passage.
[0014] Compared with the prior art, the present utility model has the following beneficial effects:
[0015] 1. For the wind door for the HVAC air handling unit of the present utility model, when it is used in the HVAC air handling unit, during the process of the wind door changing from fully open to closed, the air guiding plate makes the intersection of the cold air and the hot air gradually transfer from the communication part between the hot air passage and the main air outlet passage to the hot air passage. In the case where the cold air output gradually decreases, it can avoid the side of the main air outlet passage close to the hot air passage being mainly occupied by the hot air, making the mixing of the cold air and the hot air in the main air outlet passage more uniform; it is beneficial to reduce the air outlet temperature difference of each air outlet, improve the linearity of the temperature change, avoid the temperature fluctuation in the vehicle, and improve the driving comfort.
[0016] 2. For the wind door for the HVAC air handling unit of the present utility model, the air guiding plate with a radian can not only avoid the interference between the air guiding plate and the interior of the housing during the rotation range of the wind door, but also avoid the air guiding plate extending excessively into the hot air passage during the closing process of the wind door, resulting in the intersection of the hot air and the cold air transferring excessively into the hot air passage, causing the side of the main air outlet passage far from the hot air passage to be mainly occupied by the cold air, and forming an air outlet temperature difference between the air outlet bypass passage close to the cold air passage and the other air outlet bypass passages. In addition, the air guiding plate is connected with the air guiding section and the extending section through an arc-shaped transition section, which is also beneficial to improve the overall structural strength of the air guiding plate.
[0017] 3. In the HVAC air handling unit of the present utility model, by changing the internal air flow structure through the wind door for the HVAC air handling unit, it can effectively solve the problem that the existing wind door easily causes a large temperature difference between the air outlets of the air handling unit, and achieve the effects of improving the temperature consistency of each air outlet and the linearity of the air outlet temperature change, which is beneficial to improving the comfort of the automotive air conditioner and enhancing the customer satisfaction; the structure of the wind door for the HVAC air handling unit is simple and reasonable, can withstand the pressure brought by the blowing, and will not shake, enabling the HVAC air handling unit to work stably. Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the internal structure of the existing HVAC air handling unit described in the background art;
[0019] Figure 2 It is a perspective view of the existing air damper described in the background art;
[0020] Figure 3 It is perspective view A of the air damper for the HVAC air handling unit described in the embodiment;
[0021] Figure 4 It is a side view of the air damper for the HVAC air handling unit described in the embodiment;
[0022] Figure 5 It is perspective view B of the air damper for the HVAC air handling unit described in the embodiment;
[0023] Figure 6 It is a schematic diagram of the internal structure of the HVAC air handling unit described in the embodiment;
[0024] Wherein, there are a housing 1, a cold air passage 2, a hot air passage 3, a main air outlet passage 4, an air outlet bypass passage 5, an air outlet 6, an air damper 7, a rotating shaft 8, an air damper body 9; a wind guiding plate 10, a wind guiding section 11, a transition section 12, an extension section 13, a wind guiding platform 14, a grid groove 15, a first rib 16, a second rib 17, and a strengthening column 18. Specific Embodiment
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0026] Embodiment:
[0027] Please refer to Figure 1 , an air damper for an HVAC air handling unit, including an air damper body 9 in the shape of a rectangular plate. One side in the width direction of the air damper body 9 is connected with a rotating shaft 8. The axial direction of the rotating shaft 8 corresponds to the length direction of the air damper body 9. The air damper body 9 and the axis of the rotating shaft 8 are coplanar; a wind guiding plate 10 is connected to the rotating shaft 8. The length direction of the wind guiding plate 10 corresponds to the axial direction of the rotating shaft 8. The length of the wind guiding plate 10 matches the length of the air damper body 9. The width direction of the wind guiding plate 10 corresponds to the width direction of the air damper body 9.
[0028] For the air damper for the HVAC air handling unit of the present utility model, please refer to Figure 6, it is used inside the HVAC air handling unit. When the air damper in the cold air duct 2 is biased towards the side close to the hot air duct 3 and the cold air duct 2 is in a fully open state, the air deflector 10 extends to the connection between the hot air duct 3 and the main air outlet duct 4, partially blocking this connection. So that the cold air output from the cold air duct 2 can continue to flow a certain distance in the main air outlet duct 4 without being affected by the hot air pressure, making the intersection of the cold air and hot air in the main air outlet duct 4 closer to the side where the hot air duct 3 is located, avoiding the side of the main air outlet duct 4 close to the hot air duct 3 being mainly occupied by hot air, thus making the mixing of cold air and hot air in the main air outlet duct 4 more uniform; when the air damper rotates in the cold air duct 2 towards the side away from the hot air duct 3 and the cold air duct 2 gradually closes, the air deflector 10 extends into the hot air duct 3. As the air damper closes, the intersection of the cold air and hot air gradually moves from the connection between the hot air duct 3 and the main air outlet duct 4 into the hot air duct 3. Thus, even when the cold air output decreases, it can still avoid the side of the main air outlet duct 4 close to the hot air duct 3 being mainly occupied by hot air, making the mixing of cold air and hot air in the main air outlet duct 4 more uniform; it is beneficial to reduce the air outlet temperature difference at each air outlet 6, improve the linearity of temperature change, avoid temperature fluctuations inside the vehicle, and improve driving comfort.
[0029] Please refer to Figure 3 and Figure 4 , the air deflector 10 includes a guiding section 11, a transition section 12, and an extending section 13 that are connected in sequence along its width direction. The guiding section 11 is connected to the rotating shaft 8, and the angle between the guiding section 11 and the air damper body 9 is an obtuse angle. The transition section 12 is arc-shaped and is smoothly connected to the guiding section 11 and the extending section 13 respectively. The concave surface of the transition section 12 faces the side where the angle increases, and the extending section 13 forms an obtuse angle or is parallel to the air damper body 9; in this way, the air deflector 10 with a curvature can not only avoid interference between the air deflector 10 and the interior of the housing during the rotation range of the air damper, but also avoid the air deflector 10 extending too far into the hot air duct 3 during the closing process of the air damper, resulting in the intersection of hot air and cold air moving too far into the hot air duct 3, causing the side of the main air outlet duct 4 far from the hot air duct 3 to be mainly occupied by cold air, and forming an air outlet temperature difference between the air outlet bypass duct 5 close to the cold air duct 2 and the other air outlet bypass ducts 5. In addition, the air deflector 10 connecting the guiding section 11 and the extending section 13 through the arc-shaped transition section 12 is also beneficial to improve the overall structural strength of the air deflector 10.
[0030] Please refer to Figure 3 and Figure 4, on one side of the damper body 9 close to the air deflector 10 in the thickness direction, a wind guiding platform 14 is formed by protrusion. The end face of the free end of the wind guiding platform 14 is the wind guiding surface, and the wind guiding surface is inclined in the width direction of the damper body 9. The highest point of the wind guiding surface is close to the air deflector 10 and lower than the transition section 12. In this way, the wind guiding surface formed by the wind guiding platform 14 initially guides the cold air flow before the air guiding section 11 of the air deflector 10, so that when the cold air reaches the air guiding section 11, it can flow more smoothly along the air guiding section 11, the transition section 12 and the extension section 13. This can not only reduce the impact of the cold air on the air deflector 10, improve the structural stability, but also make the cold air flow more smoothly, reduce the internal energy loss and avoid abnormal noises.
[0031] Please refer to Figure 5 , in the area corresponding to the wind guiding platform 14 on the side of the damper body 9 away from the air deflector 10 in the thickness direction, there is a grid groove 15. In this way, while reducing the weight of the damper body 9, it is beneficial to improve the structural strength of the damper body 9.
[0032] Please refer to Figure 3 and Figure 4 , on the wind guiding surface, there are first convex ribs 16 and second convex ribs 17 formed by protrusion, which are in a plate shape. The heights of the first convex ribs 16 and the second convex ribs 17 are lower than that of the extension section 13. The length direction of the convex ribs corresponds to the length direction of the damper body 9, and the two convex ribs are arranged at intervals in the width direction of the damper body 9. In this way, on the basis of the wind guiding surface, the cold air flow is further guided gradually through the first convex ribs 16 and the second convex ribs 17, so that the cold air flows more smoothly from the damper body 9 to the air deflector 10.
[0033] Please refer to Figure 3 , in the width direction of the damper body 9, the first convex rib 16 is located in the middle of the wind guiding surface. The first convex rib 16 has a convex structure with the middle part in the length direction higher than the two ends. On the wind guiding surface, there is a reinforcing column 18 with a diameter larger than the thickness of the first convex rib 16. The reinforcing column 18 is located in the middle of the length direction of the first convex rib 16 and is connected with the first convex rib 16 as a whole. In this way, the first convex rib 16 faces the cold air before the second convex rib 17. The first convex rib 16 is designed to have a convex structure. By reducing the windward area of the first convex rib 16, the amount of cold air changing the wind direction through the first convex rib 16 is reduced, and then the second convex rib 17 is used to further change the wind direction of the cold air, so that the guiding effect of the damper body 9 on the cold air wind direction increases in the flow direction, which is beneficial to reducing the impact of the cold air on the damper body 9. Setting the reinforcing column 18 connected with the first convex rib 16 as a whole is beneficial to improving the structural strength of the first convex rib 16 and enhancing the ability of the first convex rib 16 to withstand the cold air pressure.
[0034] Please refer to Figure 4, at the highest point of the second rib 17 close to the air guiding surface, the side of the second rib 17 away from the first rib 16 is transitionally connected to the air guiding surface through an inclined surface; in this way, the cross-section of the second rib 17 increases from top to bottom, which is beneficial to improving the structural strength of the second rib 17.
[0035] Please refer to Figure 6 , this embodiment further includes an HVAC air conditioning box, which includes a housing 1. The housing 1 is provided with a cold air inlet, a hot air inlet and a plurality of air outlets 6. Inside the air conditioning box housing, there are a cold air channel 2, a hot air channel 3, a main air outlet channel 4 and a plurality of air outlet bypass channels 5. The air outlet bypass channels 5 extend inward from the corresponding air outlets 6 and are communicated with one end of the main air outlet channel 4. The other end of the main air outlet channel 4 is respectively communicated with one end of the cold air channel 2 and the hot air channel 3. A wind door that can be opened inward is rotatably provided in the cold air channel 2 near the communication position. The rotating shaft 8 of the wind door is located on the side of the cold air channel 2 close to the hot air channel 3. The other ends of the cold air channel 2 and the hot air channel 3 respectively extend to the cold air inlet and the hot air inlet; the wind door adopts the wind door for the HVAC air conditioning box as described above, and the concave surface of the transition section 12 faces the communication position of the hot air channel 3 and the main air outlet channel 4;
[0036] In this way, in this HVAC air conditioning box, by changing the internal air flow structure through the wind door for the HVAC air conditioning box, the problem that the existing wind door easily causes a large temperature difference among the air outlets 6 of the air conditioning box can be effectively solved, and the effects of improving the temperature consistency of each air outlet 6 and the linearity of the air outlet temperature change can be achieved, which is beneficial to improving the comfort of the automotive air conditioning and enhancing the customer satisfaction; the structure of the wind door for the HVAC air conditioning box is simple and reasonable, can withstand the pressure brought by the blowing, and will not shake, enabling the HVAC air conditioning box to work stably.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the technical solutions. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solution shall be covered by the scope of the claims of the present invention.
Claims
1. A damper for an HVAC air handling unit, comprising a damper body in the shape of a rectangular plate. One side in the width direction of the damper body is connected with a rotating shaft, the axial direction of the rotating shaft corresponds to the length direction of the damper body, and the damper body and the axis of the rotating shaft are coplanar; it is characterized in that: A wind guide plate is connected to the rotating shaft. The length direction of the wind guide plate corresponds to the axial direction of the rotating shaft. The length of the wind guide plate matches the length of the damper body. The width direction of the wind guide plate corresponds to the width direction of the damper body.
2. The damper for an HVAC air handling unit according to claim 1, wherein: The wind guide plate includes a wind guiding section, a transition section, and an extension section that are connected in sequence along its width direction. The wind guiding section is connected to the rotating shaft. The included angle between the wind guiding section and the damper body is an obtuse angle. The transition section is arc-shaped and is smoothly connected to the wind guiding section and the extension section respectively. The concave surface of the transition section faces the side where the included angle increases. The extension section forms an obtuse angle or is parallel to the damper body.
3. The damper for an HVAC air handling unit according to claim 2, characterized in that: On the side of the damper body close to the wind guide plate in the thickness direction, a wind guiding platform is formed by convexity. The free end face of the wind guiding platform is a wind guiding surface. The wind guiding surface is inclined in the width direction of the damper body. The highest point of the wind guiding surface is close to the wind guide plate and lower than the transition section.
4. The damper for an HVAC air handling unit according to claim 3, wherein: In the area corresponding to the wind guiding platform on the side of the damper body away from the wind guide plate in the thickness direction, there is a grid groove.
5. The damper for an HVAC air handling unit according to claim 3, characterized in that: On the wind guiding surface, a plate-shaped first rib and a second rib are formed by convexity. The heights of the first rib and the second rib are lower than that of the extension section. The length direction of the rib corresponds to the length direction of the damper body. The two ribs are arranged at intervals in the width direction of the damper body.
6. The damper for an HVAC air handling unit according to claim 5, wherein: In the width direction of the damper body, the first rib is located in the middle of the wind guiding surface. The first rib has a convex structure with the middle part in the length direction higher than the two ends. On the wind guiding surface, a reinforcing column with a diameter larger than the thickness of the first rib is formed by convexity. The reinforcing column is located in the middle of the length direction of the first rib and is integrally connected with the first rib.
7. The damper for an HVAC air handling unit according to claim 6, wherein: The second rib is close to the highest point of the wind guiding surface. The side of the second rib away from the first rib is transitionally connected to the wind guiding surface through an inclined surface.
8. An HVAC air handling unit, comprising a housing, which is provided with a cold air inlet, a hot air inlet and a plurality of air outlets. Inside the housing of the air handling unit, there are a cold air passage, a hot air passage, a main air outlet passage and a plurality of air outlet bypass passages. The air outlet bypass passages extend inward from the corresponding air outlets and are communicated with one end of the main air outlet passage. The other end of the main air outlet passage is respectively communicated with one end of the cold air passage and the hot air passage. A damper that can be opened inward is rotatably provided in the cold air passage near the communication position, and the rotating shaft of the damper is located on the side of the cold air passage close to the hot air passage. The other ends of the cold air passage and the hot air passage respectively extend to the cold air inlet and the hot air inlet; It is characterized in that: The damper adopts the damper for HVAC air conditioning box as described in any one of claims 2 - 7. The concave surface of the transition section faces the connection between the hot air channel and the main air outlet channel.