Automobile air conditioning box and flow guide structure for mixing cold air and hot air of automobile air conditioning box

Abstract

The utility model relates to the technical field of automobile air conditioning boxes, and provides a cold and hot air mixed flow guide structure of an automobile air conditioning box, which comprises a middle guide plate and a cold and hot channel guide plate, and the middle guide plate is arranged at an air inlet of a cold air channel to prevent part of cold air from entering the cold air channel; the cold and hot channel guide plate is arranged between the cold and hot mixing channel and the cold air channel to mix cold air and hot air. The arc-shaped groove is formed in the middle of the middle guide plate body, part of cold air can be prevented from entering, more blocking is achieved on the two sides of the middle guide plate, less blocking is achieved in the middle of the middle guide plate, and the cold and hot air proportion between face blowing outlets is adjusted, so that the temperature of the face blowing outlets is more uniform. And in addition, more cold air can flow through the middle part, so that the cold air relatively flowing to the foot blowing opening is increased, and the temperature linearity in a Bi-Level mode is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive air conditioning units, and in particular to an automotive air conditioning unit and its airflow guiding structure for mixing hot and cold air. Background Technology

[0002] Automotive heating, ventilation, and air conditioning (HVAC) refers to the systems and related equipment inside a vehicle responsible for heating, ventilation, and air conditioning, with the air conditioning unit being a crucial component. Existing air conditioning units primarily rely on airflow guidance within the unit's structure to maintain internal temperature. This often results in stratification of hot and cold air, leading to uneven air temperature at the vents. Therefore, airflow guidance structures are typically added within the air conditioning unit to regulate the temperature difference between the airflow outlets facing the face and those at the feet. However, traditional air conditioning units require four sets of airflow guidance structures, and they suffer from abrupt temperature changes in the latter half of the linear temperature distribution. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a guide structure for mixing hot and cold air in an automotive air conditioning unit, including a central guide plate and a hot and cold channel guide plate. The central guide plate is disposed at the air inlet of the cold air channel to block part of the cold air from entering the cold air channel. The hot and cold channel guide plate is disposed between the hot and cold mixing channel and the cold air channel to mix the hot and cold air.

[0004] Furthermore, the middle guide plate includes a middle guide plate body, with baffles at both ends of the middle guide plate body and an arc-shaped groove in the middle part of the middle guide plate body.

[0005] Furthermore, the hot and cold aisle guide plate includes staggered cold air guide plates and hot air guide plates, the hot air guide plate being an inclined rectangular guide plate; the cold air guide plate includes an upper guide plate and side guide plates, the upper guide plate having side guide plates on both sides.

[0006] Furthermore, the upper guide plate is curved.

[0007] Furthermore, the side guide plate includes a first side portion and a second side portion, which are arranged at an included angle.

[0008] Furthermore, the hot air guide plate and one or two side guide plates form a first air outlet, which is used to blow cold air towards the face blowing air outlet and the defrosting air outlet.

[0009] The upper guide plate and the two side guide plates form a second air outlet, which is used to blow cold air into the hot and cold mixing channel and the foot air outlet.

[0010] Furthermore, the hot air guide plate connected to a side guide plate is provided with reinforcing ribs, which are located on the side near the hot and cold mixing channel.

[0011] Furthermore, the upper guide plate is provided with a connecting plate, and the connecting plate has openings at both ends, which are located at the upper guide plate at both ends.

[0012] Furthermore, the hot and cold channel guide plate is integrally formed.

[0013] On the other hand, this utility model also provides an automotive air conditioning unit, including a guide structure for mixing hot and cold air and an air distribution shell. The air distribution shell has an air inlet channel, a face air outlet, a defrost air outlet, and a foot air outlet. The air distribution shell contains a cold air channel, a hot air channel, and a hot and cold air mixing channel.

[0014] The cold air duct is equipped with a first opening adjustment damper, and the hot and cold air mixing duct is equipped with a second, third, and fourth opening adjustment damper. The first opening adjustment damper is used to adjust the opening of cold air entering the cold air duct and the hot and cold air mixing duct; the second opening adjustment damper is used to adjust the opening of the hot and cold air mixture entering the defrost outlet; the third opening adjustment damper is used to adjust the opening of the hot and cold air mixture entering the face air outlet; and the fourth opening adjustment damper is used to adjust the opening of the hot and cold air mixture entering the foot air outlet.

[0015] Preferably, the hot air channel is equipped with a warm air core.

[0016] This utility model has the following beneficial effects:

[0017] (1) The two ends of the middle guide plate body in this utility model are provided with baffles, and the middle part of the middle guide plate body is provided with an arc-shaped groove, which can block some cold air from entering. The middle guide plate blocks more on both sides and less in the middle part, adjusting the ratio of hot and cold air between the blowing outlets, so that the temperature of the blowing outlets is more uniform. In addition, since more cold air can go through the middle part, the cold air that goes to the foot blowing outlet is increased, achieving temperature linearity in Bi-Level mode.

[0018] (2) The hot air guide plate and one or two side guide plates in this utility model form a first air outlet. The first air outlet blows cold air to the face air outlet and the defrost air outlet, which can accurately blow cold air to the face air outlet and the defrost air outlet to meet different air outlet needs. The upper guide plate and two side guide plates form a second air outlet. The second air outlet blows cold air to the hot and cold mixing channel and the foot air outlet, ensuring that the air volume and temperature of each air outlet meet the design requirements and improving the comfort of using the air conditioner in the vehicle.

[0019] (3) The integrated hot and cold channel guide plate of this utility model improves the rigidity and stability of the overall structure, reduces the connection gap between components, and reduces the risk of failure due to loosening. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the air distribution shell in Example 1.

[0021] Figure 2 This is a schematic diagram of the position of the guide plate in Example 1.

[0022] Figure 3 This is a schematic diagram of the structure of the guide plate in Embodiment 1.

[0023] Figure 4 This is a schematic diagram of the hot and cold channel guide plate in Example 1.

[0024] Figure 5 This is a schematic diagram of the hot and cold channel guide plate in Example 1 from another direction.

[0025] Figure 6 This is a schematic diagram of the structure of the car air conditioning unit in Example 2.

[0026] Figure 7 This is a schematic diagram showing the flow direction of hot and cold air inside the car's air conditioning unit in Example 2. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. However, this embodiment is not intended to limit this utility model. Any similar structure or similar variation of this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and. The English letters in this utility model are case-sensitive.

[0028] Example 1

[0029] like Figure 1-2 As shown, this embodiment provides a guide structure for mixing hot and cold air in an automotive air conditioning unit, including a central guide plate 1 and a hot and cold channel guide plate 2. The central guide plate 1 is disposed at the air inlet of the cold air channel 3 to block part of the cold air from entering the cold air channel 3; the hot and cold channel guide plate 2 is disposed between the hot and cold mixing channel 4 and the cold air channel to mix the hot and cold air.

[0030] like Figure 3 As shown, the guide plate 1 includes a guide plate body 11, with baffles 12 at both ends and an arc-shaped groove 13 in the middle. In Vent mode, the guide plate 1 is positioned at the air inlet of the cold air channel, blocking some of the cold air from entering. The guide plate blocks more air at its sides and less in the middle, adjusting the ratio of hot and cold air at the air outlets to make the temperature at the air outlets more uniform. In Bi-Level mode, more cold air can pass through the middle section, increasing the amount of cold air reaching the foot outlets and achieving temperature linearity in Bi-Level mode.

[0031] like Figure 4-5 As shown, the hot and cold aisle guide plate 2 includes staggered cold air guide plates 21 and hot air guide plates 22, allowing for full contact between hot and cold air within the mixing channel. The hot air guide plate 22 is inclined, guiding the efficient flow of hot air; the hot air guide plate 22 is an inclined rectangular guide plate, guiding the efficient flow of hot air. The cold air guide plate 21 includes an upper guide plate 211 and side guide plates 212, with side guide plates 212 on both sides of the upper guide plate 211. The upper guide plate 211 is arc-shaped. The side guide plates 212 include a first side portion 2121 and a second side portion 2122, which are angled together, further dispersing the cold air and making the hot and cold air more evenly distributed during the mixing process, significantly improving mixing efficiency and effect, and avoiding uneven local temperatures. The hot air guide plate 22 and one or two side guide plates form a first air outlet 23. The first air outlet 23 is used to blow cold air to the face air outlet 51 and the defrost air outlet 52, which can accurately blow cold air to the face air outlet and the defrost air outlet to meet different air outlet needs. The upper guide plate 211 and two side guide plates 212 form a second air outlet 24. The second air outlet 24 is used to blow cold air to the hot and cold mixing channel 4 and the foot air outlet 53, ensuring that the air volume and temperature of each air outlet meet the design requirements and improving the comfort of using the air conditioner in the vehicle.

[0032] Preferably, the hot air guide plate connected to a side guide plate is provided with reinforcing ribs 220 and fasteners 221. The reinforcing ribs 220 are located on the side near the hot and cold mixing channel, which can effectively enhance the structural strength of the hot air guide plate and prevent it from deforming under long-term airflow impact. It is fixed to the air distribution shell by the fasteners.

[0033] Preferably, the upper guide plate 211 is provided with a connecting plate 25, and the two ends of the connecting plate 25 are provided with openings 251, which are located at the upper guide plate 211 at both ends.

[0034] Preferably, the hot and cold channel guide plate is integrally formed, which improves the rigidity and stability of the overall structure, reduces the connection gap between components, and reduces the risk of failure due to loosening.

[0035] Example 2

[0036] like Figure 6-7 As shown, this embodiment provides an automotive air conditioning unit, including a flow guide structure for mixing hot and cold air and an air distribution shell 5. The air distribution shell is provided with an air inlet channel 50, a face air outlet 51, a defrost air outlet 52, and a foot air outlet 53. The air distribution shell is provided with a cold air channel 3, a hot air channel 6, and a hot and cold air mixing channel 4.

[0037] The cold air channel 3 is equipped with a first opening adjustment damper 7, and the hot and cold air mixing channel 4 is equipped with a second opening adjustment damper 8, a third opening adjustment damper 9, and a fourth opening adjustment damper 10. The first opening adjustment damper is used to adjust the opening of cold air entering the cold air channel and the hot and cold mixing channel; the second opening adjustment damper is used to adjust the opening of the hot and cold mixed air entering the defrost outlet; the third opening adjustment damper is used to adjust the opening of the hot and cold mixed air entering the face air outlet; and the fourth opening adjustment damper is used to adjust the opening of the hot and cold mixed air entering the foot air outlet. The first, second, third, and fourth opening adjustment dampers are all existing structures in the prior art, and this application does not protect them; therefore, this document will not elaborate on them.

[0038] Preferably, the hot air channel 6 is provided with a warm air core 61.

[0039] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

Claims

1. A flow guiding structure for mixing hot and cold air in an automotive air conditioning unit, characterized in that, It includes a central guide plate and a hot and cold aisle guide plate. The central guide plate is disposed at the air inlet of the cold air aisle to block part of the cold air from entering the cold air aisle. The hot and cold aisle guide plate is disposed between the hot and cold mixing aisle and the cold air aisle to mix the hot and cold air.

2. The air mixing guide structure of claim 1, wherein, The guide plate includes a guide plate body, with baffles at both ends and an arc-shaped groove in the middle.

3. The air mixing guide structure of claim 1, wherein, The hot and cold aisle guide plate includes staggered cold air guide plates and hot air guide plates, the hot air guide plate being an inclined rectangular guide plate; the cold air guide plate includes an upper guide plate and side guide plates, the upper guide plate having side guide plates on both sides.

4. The air mixing guide structure of claim 3, wherein, The upper guide plate is curved.

5. The air mixing guide structure of claim 3, wherein the air mixing guide structure is formed by a plurality of air mixing guide plates. The side guide plate includes a first side and a second side, which are arranged at an angle.

6. The air mixing guide structure of claim 5, wherein, The hot air guide plate and one or two side guide plates form a first air outlet, which is used to blow cold air toward the face blowing air outlet and the defrosting air outlet. The upper guide plate and the two side guide plates form a second air outlet, which is used to blow cold air into the hot and cold mixing channel and the foot air outlet.

7. The air mixing structure of claim 3, wherein the air mixing structure is a structure of a vehicle air conditioner. The hot air guide plate connected to a side guide plate is provided with reinforcing ribs, which are located on the side near the hot and cold mixing channel.

8. The air mixing guide structure of claim 3, wherein, The upper guide plate is provided with a connecting plate, and the connecting plate has openings at both ends, which are located at the upper guide plate at both ends.

9. The air mixing guide structure of claim 1, wherein, The hot and cold aisle guide plates are integrally formed.

10. An automotive air conditioning unit characterized by Includes the airflow guiding structure and air distribution housing for mixing hot and cold air as described in any of claims 1-9, wherein the air distribution housing has an air inlet channel, a face air outlet, a defrost air outlet, and a foot air outlet; the air distribution housing contains a cold air channel, a hot air channel, and a hot and cold air mixing channel. The cold air duct is provided with a first opening adjustment damper, and the hot and cold air mixing duct is provided with a second opening adjustment damper, a third opening adjustment damper and a fourth opening adjustment damper. The first opening adjustment damper is used to adjust the opening of the cold air entering the cold air duct and the hot and cold mixing duct, and the second opening adjustment damper is used to adjust the opening of the hot and cold mixed air entering the defrost outlet. The third opening damper is used to adjust the opening of the hot and cold mixed air entering the face air outlet; the fourth opening damper is used to adjust the opening of the hot and cold mixed air entering the foot air outlet.

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