Guide plate for optimizing mixing of cold air and hot air

Abstract

The utility model discloses a guide plate for optimizing cold and hot air mixing, which relates to the technical field of air conditioning boxes and is mounted in an automobile air conditioning box, a front blowing outlet and a rear blowing channel are arranged in the automobile air conditioning box, the front blowing outlet comprises a face blowing outlet and a front foot blowing outlet, and the rear blowing channel comprises a rear face blowing outlet and a rear foot blowing outlet. A warm air core and a lower cooling channel which are located between the front blowing outlet and the rear blowing channel are further arranged in the automobile air conditioner box, the warm air core is close to the front blowing foot outlet, the lower cooling channel is close to the rear blowing channel, and the flow guide plate is used for controlling the temperature difference between the front blowing outlet and the rear blowing channel and the temperature difference between the rear blowing face outlet and the rear blowing foot outlet. Through the drainage effect of the flow guide plate, mixing of cold air and hot air in the air conditioning box is optimized, the front and back blowing temperature difference in the air conditioning box is reduced, a certain face and foot difference is guaranteed, and the comfort and experience of passengers are improved; meanwhile, when the temperature of the air outlet is improved, the resistance of the distribution box is increased as little as possible.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit technology, and more specifically, it relates to a guide plate for optimizing the mixing of hot and cold air. Background Technology

[0002] In the field of automotive air conditioning system technology, traditional air conditioning units generally suffer from problems such as hot and cold air stratification and low airflow mixing efficiency, manifested as insufficient temperature difference at the air outlet and slow temperature rise response. Especially for modern air conditioning units equipped with a single rear air vent structure, the core defects are reflected in two aspects: First, when only a single vent is set in the rear air duct, it is difficult to achieve temperature gradient control between the rear face mode and the rear foot mode, resulting in insufficient temperature difference between the passenger's feet and face areas, directly affecting the passenger's comfort; Second, there are inherent deviations in the air volume distribution and temperature control between the front and rear air ducts, which cannot meet the needs of independent temperature control in multiple areas, causing local thermal imbalance for front and rear passengers.

[0003] Existing technologies typically employ deflector structures to optimize airflow distribution and improve the mixing of hot and cold air. While deflectors improve airflow uniformity, they also affect the airflow resistance within the air conditioning unit. For example, a Chinese utility model patent with patent authorization publication number CN 203349452 U discloses an automotive air conditioning unit. This unit features a deflector within its cold airflow channel, which directs some of the cold air towards the rear air vents, increasing the airflow volume from these vents. In full-cold-airflow mode, this results in a smaller temperature difference between the front and rear rows. However, this technical solution only reduces the temperature difference between the front and rear rows in full-cold-airflow mode and does not improve the temperature difference between the front and rear air vents, indicating significant limitations. Utility Model Content

[0004] To address this problem in practical applications, the purpose of this utility model is to propose a guide plate that optimizes the mixing of hot and cold air. This plate controls the temperature difference between the front and rear air outlets of the air conditioning unit while minimizing the increase in resistance, thus improving the temperature difference between the front and rear airflow. The specific solution is as follows:

[0005] A deflector for optimizing the mixing of hot and cold air is installed inside an automotive air conditioning unit. The automotive air conditioning unit has a front air outlet and a rear air duct. The front air outlet includes a front air outlet and a front foot air outlet. The rear air duct includes a rear front air outlet and a rear foot air outlet. The automotive air conditioning unit also has a warm air core and a lower cooling channel located between the front air outlet and the rear air duct. The warm air core is close to the front foot air outlet, and the lower cooling channel is close to the rear air duct.

[0006] The guide vane is used to control the temperature difference between the front blowing outlet and the rear blowing duct, as well as the temperature difference between the rear blowing surface outlet and the rear blowing foot outlet.

[0007] Furthermore, the guide plate includes a lower pressure plate, a middle guide plate, a side guide plate, and several walls. The lower pressure plate is connected to the walls on both sides. One end of each side wall extends downward and is connected to the middle guide plate. The side guide plate is connected to the inner wall of the middle guide plate and to the side wall of one of the side walls near the middle guide plate.

[0008] Furthermore, the guide plate is located on one side of the warm air core and the lower cooling channel and close to the rear air duct;

[0009] A flow guiding opening is formed between the wall surface, the lower pressure plate and the middle guide plate, and the middle guide plate and the lower pressure plate are spaced apart, with the space being the flow guiding outlet, and the flow guiding outlet is connected to the flow guiding opening;

[0010] The upper part of the air guide opening faces the warm air core, the lower part faces the lower cooling channel, and the air guide outlet faces the rear air blowing duct.

[0011] Furthermore, the lower pressure plate is close to the heating core, and the lower pressure plate is used to push the hot air that enters from the guide inlet into the heating core through the guide outlet and then press it down into the rear air blowing duct.

[0012] Furthermore, the middle guide plate is located near the lower cooling channel, and the middle guide plate is used to guide the cold air entering from the guide inlet in the lower cooling channel through the guide outlet and then guide it upward to the rear air blowing duct.

[0013] Furthermore, the side guide plate faces the lower cooling channel and is used to direct the cold air from the lower cooling channel to the front foot outlet.

[0014] Furthermore, the portion of one side of the wall connected to the lower pressure plate is bent away from the other side of the wall, so that the lower pressure plate forms an extension away from the other side of the wall to enlarge the opening size of the flow guide opening.

[0015] Furthermore, both the lower pressure plate and the middle guide plate have an arc-shaped surface structure, and the bending directions of their arc-shaped surfaces are arranged opposite to each other.

[0016] Furthermore, the side guide plate is inclined toward one side wall of the lower cooling channel.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides a deflector plate, which optimizes the mixing of hot and cold air in the air conditioning unit through the deflector plate's airflow guiding effect, reduces the temperature difference between the front and rear airflow inside the air conditioning unit, ensures a certain surface temperature difference, and improves passenger comfort and experience; at the same time, it minimizes the increase in the resistance of the distribution box while improving the air outlet temperature. Attached Figure Description

[0019] Figure 1 , 2This is a schematic diagram of the guide vane in a side view of an embodiment of the present invention;

[0020] Figure 3 This is a front view of the guide plate in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the external structure of the air conditioner housing in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the air conditioning unit in an embodiment of this utility model.

[0023] Reference numerals: 100, front air outlet; 101, face air outlet; 102, front foot air outlet; 200, rear air duct; 201, rear face air outlet; 202, rear foot air outlet; 300, warm air core; 400, lower cooling channel;

[0024] 1. Flow guide plate; 11. Lower pressure plate; 12. Middle guide plate; 13. Side guide plate; 14. First wall surface; 15. Second wall surface; 16. Flow guide opening; 17. Flow guide outlet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] A deflector plate for optimizing the mixing of hot and cold air is installed inside the automotive air conditioning unit. While minimizing the increase in resistance, it controls the temperature difference between the air outlets on the front and rear of the air conditioning unit and improves the temperature difference between the front and rear air outlets.

[0027] like Figure 1-3 As shown, the flow guide plate 1 includes a lower pressure plate 11, a middle guide plate 12, a side guide plate 13, and several wall surfaces, preferably two wall surfaces, namely a first wall surface 14 and a second wall surface 15. The lower pressure plate 11 is connected to the first wall surface 14 and the second wall surface 15 on both sides. One end of the first wall surface 14 and the second wall surface 15 extends downward and is connected to the middle guide plate 12. The side guide plate 13 is connected to the inner wall of the middle guide plate 12 and the side wall of the first wall surface 14 near the middle guide plate 12. Furthermore, the first wall surface 14, the second wall surface 15, the lower pressure plate 11, and the middle guide plate 12 are combined to form a flow guide opening 16. The middle guide plate 12 and the lower pressure plate 11 are spaced apart, and the spaced part is a flow guide outlet 17. The flow guide outlet 17 is connected to the flow guide opening 16.

[0028] like Figure 3-4 As shown, the car air conditioning unit has a front air outlet 100 and a rear air duct 200. The front air outlet 100 includes a face air outlet 101 and a front foot air outlet 102. The face air outlet... Figure 4 From left to right, the outlets include the left blowing surface outlet, the middle left blowing surface outlet, the middle right blowing surface outlet, the right blowing surface outlet (not shown in the figure), and the front foot outlet 102. Figure 4 From left to right, it includes a left front foot outlet and a right front foot outlet (not shown in the figure). The rear air duct 200 includes a rear air outlet 201 and a rear foot outlet 202. The rear foot outlet 202 is... Figure 4 From left to right, it includes a rear left foot outlet and a rear right foot outlet (not shown in the figure), and the rear foot outlet 202 is located above the rear front outlet 201. The car air conditioning unit also has a warm air core 300 and a lower cooling channel 400 located between the front outlet 100 and the rear air duct 200, and the warm air core 300 is close to the front foot outlet 102, and the lower cooling channel 400 is close to the rear air duct 200.

[0029] The deflector plate 1 is used to control the temperature difference between the front blowing outlet 100 and the rear blowing duct 200, as well as the temperature difference between the rear blowing surface outlet 201 and the rear blowing foot outlet 202.

[0030] Specifically, the guide plate 1 is located on one side of the warm air core 300 and the lower cooling channel 400 and close to the rear air duct 200. The upper part of the guide opening 16 faces the warm air core 300 and the lower part faces the lower cooling channel 400. The guide outlet 17 faces the rear air duct 200. The lower pressure plate 11 is close to the warm air core 300. The lower pressure plate 11 is used to push the hot air entering the warm air core 300 from the guide inlet through the guide outlet 17 and then press it down into the rear air duct 200. The middle guide plate 12 is close to the lower cooling channel 400. The middle guide plate 12 is used to guide the cold air entering the lower cooling channel 400 from the guide inlet through the guide outlet 17 and then guide it upwards to the rear air duct 200.

[0031] At this time, due to the presence of the guide plate 1, the cold air going down the cold channel 400 and the hot air coming out of the warm air core 300 are mixed to a certain extent after entering the guide plate 1, and finally enter the rear air blowing duct 200. With the mixing of cold and hot air, the temperature is more uniform, avoiding the separation of cold and hot air, which reduces the temperature difference between the left and right sides of the rear air blowing foot, that is, the temperature difference between the rear left air blowing foot outlet and the rear right air blowing foot outlet is reduced, or even tends to be the same.

[0032] Meanwhile, in order to reduce the temperature of the rear air outlet 201, the angle and length of the middle guide plate 12 are adjusted according to actual needs to ensure that a portion of the cold air from the lower cooling channel 400 enters the rear air outlet 201, thereby reducing the temperature of the rear air outlet 201 and ensuring a certain temperature difference between the rear air outlet and the rear air outlet 202.

[0033] In addition, since the pressure plate 11 can push the hot air from the warm air core 300 downward and guide it into the rear air duct 200, it can increase the temperature of the rear air outlet 201 and the rear air foot outlet 202.

[0034] The side guide plate 13 faces the lower cooling channel 400 and is used to guide the cold air from the lower cooling channel 400 to the front foot outlet 102. At this time, when the airflow passes through the lower cooling channel 400, the side guide plate 13 on the guide plate 1 guides a part of the cold airflow from the lower cooling channel 400 to the front foot outlet 102, which can also increase the temperature of the rear foot outlet 202 and the rear surface outlet 201.

[0035] The side guide plate 13 is used to reduce the cold air blown from the rear, and the lower pressure plate 11 is used to increase the hot air blown from the rear. Based on this, the side guide plate 13 and the lower pressure plate 11 have the same function: to increase the temperature and air volume of the rear air blown and to reduce the temperature of the front air blown outlet 102, so as to reduce the temperature difference between the front and rear air blown.

[0036] More specifically, the portion of the first wall 14 connected to the lower pressure plate 11 is bent away from the second wall 15, so that the lower pressure plate 11 forms an extension away from the second wall 15 to enlarge the opening size of the guide opening 16, so that more hot air from the warm air core 300 can enter the guide plate 1.

[0037] Both the lower pressure plate 11 and the middle guide plate 12 have an arc-shaped surface structure, and the bending directions of their arc surfaces are opposite to each other. That is, both the lower pressure plate 11 and the middle guide plate 12 are bent towards the center of the guide plate 1. This ensures that the hot air entering the guide plate 1 from the warm air core 300 can be pressed down to the rear air blowing duct 200, while ensuring that the cold air entering the guide plate 1 from the lower cold channel 400 can be drawn up to the rear air blowing duct 200.

[0038] The side guide plate 13 is inclined toward one side wall of the lower cooling channel 400. The inclination angle of the side guide plate 13 can be adjusted according to the temperature of the front foot. By adjusting the inclination angle, the amount of cold air introduced into the front foot outlet 102 can be adjusted, thereby regulating the temperature of the front foot outlet 102.

[0039] Based on the above-mentioned baffle structure, this embodiment uses CFD simulation analysis to compare the outlet temperatures of the air conditioning unit with and without baffle 1 under a 50% temperature damper opening in the existing air conditioning unit's surface and foot blowing mode. The results are shown in Table 1 below.

[0040] Table 1

[0041]

[0042]

[0043] Comparison of CFD simulation results shows that the air outlet temperature difference between the air conditioning unit with and without a deflector is significant. The deflector can significantly increase the temperature of the rear airflow face and rear airflow feet, improve the mixing of hot and cold air in the rear airflow, reduce the temperature difference between the front and rear airflows, and at the same time, the temperature difference between the face and feet will not be too large, thus improving the passenger experience.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A deflector for optimizing hot and cold air mixing, installed inside an automotive air conditioning unit, the automotive air conditioning unit having a front air outlet and a rear air duct, the front air outlet including a front air outlet and a front foot air outlet, the rear air duct including a rear front air outlet and a rear foot air outlet, the automotive air conditioning unit further having a warm air core and a lower cooling channel located between the front air outlet and the rear air duct, wherein the warm air core is close to the front foot air outlet and the lower cooling channel is close to the rear air duct, characterized in that: The guide vane is used to control the temperature difference between the front blowing outlet and the rear blowing duct, as well as the temperature difference between the rear blowing surface outlet and the rear blowing foot outlet.

2. The guide vane for optimizing hot and cold air mixing according to claim 1, characterized in that, The guide plate includes a lower pressure plate, a middle guide plate, a side guide plate, and several walls. The lower pressure plate is connected to the walls on both sides. One end of each side wall extends downward and is connected to the middle guide plate. The side guide plate is connected to the inner wall of the middle guide plate and the side wall of one of the side walls near the middle guide plate.

3. The guide vane for optimizing hot and cold air mixing according to claim 2, characterized in that, The air deflector is located on one side of the warm air core and the lower cooling channel and is close to the rear air duct. A flow guiding opening is formed between the wall surface, the lower pressure plate and the middle guide plate, and the middle guide plate and the lower pressure plate are spaced apart, with the space being the flow guiding outlet, and the flow guiding outlet is connected to the flow guiding opening; The upper part of the air guide opening faces the warm air core, the lower part faces the lower cooling channel, and the air guide outlet faces the rear air blowing duct.

4. The guide vane for optimizing hot and cold air mixing according to claim 3, characterized in that, The lower pressure plate is close to the heating core. The lower pressure plate is used to push the hot air that enters from the guide inlet into the heating core through the guide outlet and then press it down into the rear air blowing duct.

5. The guide vane for optimizing hot and cold air mixing according to claim 3, characterized in that, The middle guide plate is located near the lower cooling channel. The middle guide plate is used to guide the cold air entering from the guide inlet in the lower cooling channel through the guide outlet and then guide it upward to the rear blowing duct.

6. The guide vane for optimizing hot and cold air mixing according to claim 3, characterized in that, The side guide plate faces the lower cooling channel and is used to direct the cold air from the lower cooling channel to the front foot outlet.

7. The guide vane for optimizing hot and cold air mixing according to claim 2, characterized in that, One of the wall surfaces connected to the lower pressure plate is bent away from the other wall surface, so that the lower pressure plate forms an extension away from the other wall surface to increase the size of the flow guide opening.

8. The guide vane for optimizing hot and cold air mixing according to claim 2, characterized in that, Both the lower pressure plate and the middle guide plate have an arc-shaped surface structure, and the bending directions of their arc surfaces are opposite to each other.

9. The guide vane for optimizing hot and cold air mixing according to claim 2, characterized in that, The side guide plate is inclined toward one side wall of the lower cooling channel.

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