Automobile air conditioner HVAC air mixing structure

Abstract

This utility model belongs to the field of automotive air conditioning technology and discloses an automotive air conditioning HVAC mixing structure, including an evaporator, an HVAC lower housing, a blower, a mixing damper and its components, an HVAC middle housing, a heater core, an air guide plate, a distributor housing assembly, a face air damper, and a foot air damper. The evaporator and the blower are arranged sequentially between the HVAC lower housing and the HVAC middle housing. The mixing damper and its components, the heater core, and the air guide plate are arranged sequentially between the HVAC middle housing and the distributor housing assembly. The air guide plate includes two positioning posts, a first mounting post, and a second mounting post. The positioning posts are positioned in conjunction with the distributor housing assembly. The first mounting post and the second mounting post are fixed to the distributor housing assembly by self-tapping screws. The positioning posts, the first mounting post, and the second mounting post together fix the air guide plate. By optimizing the structure of the air conditioning housing and the air guide plate, the problem of uneven mixing of cold and hot air is effectively solved, the temperature linearity adjustment capability of the automotive air conditioning vents is improved, and the overall vehicle comfort is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive air conditioning technology, specifically an automotive air conditioning HVAC mixing structure. Background Technology

[0002] As people's demands for driving and riding comfort continue to increase, their needs for car air conditioning go beyond simply keeping the car warm in winter and cool in summer. Now, it is not only necessary to achieve zoned temperature control, but also to have more precise requirements for the temperature of each air outlet in different modes. This requires that the cold and warm air in the car air conditioning unit be mixed evenly before being blown out through the air outlet.

[0003] As car configurations continue to increase, the interior layout is becoming more and more compact, leaving limited space for the air conditioning unit. This is especially true for existing mixed-air structures, where the air conditioning assembly is relatively compact, with the evaporator and heater arranged in a triangular structure. The heater is very close to the air outlet, resulting in no extra space in the air conditioning unit to complete the mixing of cold and warm air.

[0004] Uneven mixing of hot and cold air can lead to a slow temperature rise in the air outlet, making it impossible to reach the set temperature. Furthermore, when air comes out from both outlets at the same time, the temperature difference between the two outlets can be too great, affecting the comfort of the vehicle. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes an automotive HVAC mixing structure. This structure aims to overcome the shortcomings of existing technologies, such as small mixing areas and uneven mixing of hot and cold air caused by the heater being too close to the air outlet. This structure can effectively solve the problem of uneven mixing of hot and cold air while occupying a small space, thereby improving the temperature linearity regulation capability of the automotive air conditioning outlet and enhancing the overall vehicle comfort.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive air conditioning HVAC mixing structure, comprising an evaporator, an HVAC lower housing, a blower, a mixing damper and its components, an HVAC middle housing, a heater core, an air guide plate, a distributor housing assembly, a face air damper, and a foot air damper. The evaporator and the blower are arranged sequentially between the HVAC lower housing and the HVAC middle housing, and the mixing damper and its components, the heater core, and the air guide plate are arranged sequentially between the HVAC middle housing and the distributor housing assembly.

[0007] Preferably, the air guide plate includes two positioning posts, a first mounting post, and a second mounting post. The positioning posts are positioned in conjunction with the air distributor housing assembly. The first mounting post and the second mounting post are fixed to the air distributor housing assembly by self-tapping screws. The positioning posts, the first mounting post, and the second mounting post together fix the air guide plate.

[0008] Preferably, the top two sides of the air guide plate are provided with a first hot air channel and a third hot air channel. The cavity formed by the first hot air channel and the third hot air channel guides the hot air from the warm air core to the face blowing air outlet. The hot air guided by the first hot air channel and the third hot air channel is fully mixed with the cold air guided by the first cold air channel and the third cold air channel and blown out from the face blowing air door.

[0009] Preferably, the cavity formed by the middle structure of the air guide plate is a second hot air channel. The hot air from the warm air core is mixed with the two second cold air channels from the evaporator and then distributed to the foot-blowing air door and the face-blowing air door.

[0010] Preferably, the evaporator is arranged at a 60° angle to the heating core, the blower is placed behind the evaporator, and the blower is a double-impeller centrifugal fan.

[0011] Preferably, the mixing damper and its components are sliding dampers and are driven by gears.

[0012] Preferably, the warm air core is arranged on the mixing damper and its components.

[0013] Preferably, the air guide plate is arranged above the warm air core.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model effectively solves the problem of uneven mixing of hot and cold air by optimizing the structure of the air conditioner housing and air guide plate, improves the temperature linearity regulation capability of the car air conditioner vent, and enhances the overall vehicle comfort. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the evaporator of this utility model;

[0018] Figure 3 This is a schematic diagram of the air guide plate structure of this utility model;

[0019] Figure 4 This is a line graph showing the balance of the blower head and blow feet of this utility model.

[0020] In the diagram: 1. Evaporator; 2. HVAC lower housing; 3. Blower; 4. Mixing damper and its components; 5. HVAC middle housing; 6. Heater core;

[0021] 7. Air guide plate; 7a. Positioning post; 7b. First hot air channel; 7c. First mounting post; 7d. Second mounting post; 7e. Second hot air channel; 7f. Third hot air channel; 7g. First cold air channel; 7h. Second cold air channel; 7j. Third cold air channel;

[0022] 8. Air distributor housing assembly; 9. Face air damper; 10. Foot air damper. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 4 As shown, this utility model provides an automotive air conditioning HVAC mixing structure, including an evaporator 1, an HVAC lower housing 2, a blower 3, a mixing damper and its components 4, an HVAC middle housing 5, a heater core 6, an air guide plate 7, a distributor housing assembly 8, a face air damper 9, and a foot air damper 10. The evaporator 1 and the blower 3 are arranged sequentially between the HVAC lower housing 2 and the HVAC middle housing 5. The mixing damper and its components 4, the heater core 6, and the air guide plate 7 are arranged sequentially between the HVAC middle housing 5 and the distributor housing assembly 8. The air from the evaporator 1 and the blower assembly 2 passes through two channels, namely, cold air that does not pass through the heater core 6 and hot air that passes through the heater core 6. As the mixing damper and its components 4 operate, the amount of cold air that does not pass through the heater core 6 decreases, and the amount of hot air that passes through the heater core 6 increases, and the temperature of the air outlet also rises linearly.

[0025] Specifically, the air guide plate 7 includes two positioning posts 7a, a first mounting post 7c, and a second mounting post 7d. The positioning post 7a is positioned in conjunction with the air distributor housing assembly 8. The first mounting post 7c and the second mounting post 7d are fixed to the air distributor housing assembly 8 by self-tapping screws. The positioning post 7a, the first mounting post 7c, and the second mounting post 7d together fix the air guide plate 7.

[0026] Furthermore, the top two sides of the air guide plate 7 are provided with a first hot air channel 7b and a third hot air channel 7f. The cavity formed by the first hot air channel 7b and the third hot air channel 7f guides the hot air from the heater core 6 to the face air vent. The hot air from the first hot air channel 7b and the third hot air channel 7f is fully mixed with the cold air from the first cold air channel 7g and the third cold air channel 7j and blown out from the face air damper 9. As the set temperature increases, the mixing damper and its components 4 operate from full cold to full hot. The corresponding air volume of the cold air channel decreases and the air volume of the hot air channel increases, thereby increasing the temperature of the air outlet. This achieves a linear increase in the temperature of the air outlet, and the temperatures of the foot air vent and the face air vent maintain a reasonable temperature difference to meet the comfort requirements of the whole vehicle.

[0027] Furthermore, the second hot air channel 7e, which is enclosed by the cavity of the middle structure of the air guide plate 7, is where the hot air from the warm air core 6 mixes with the two second cold air channels 7h from the evaporator 1 and is then distributed to the foot-blowing damper 10 and the face-blowing damper 9.

[0028] It is worth noting that the evaporator 1 and the warm air core 6 are arranged at 60°, and the blower 3 is placed behind the evaporator 1. The blower 3 is a double impeller centrifugal fan.

[0029] It is worth noting that the mixing damper and its component 4 are sliding dampers and are driven by gears.

[0030] It is worth mentioning that the warm air core 6 is arranged on the mixing damper and its components 4. The movement of the mixing damper controls the air from the blower to pass through the warm air core.

[0031] It is worth emphasizing that the air guide plate 7 is arranged above the warm air core 6. Through the guidance of the air guide structure, the cold air from the evaporator and the hot air from the warm air core are fully mixed and then blown out from the face vent and foot vent.

[0032] The evaporator 1 and blower 2 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The "front, back, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0033] Working principle: During operation, the air from the evaporator 1 and blower assembly 2 passes through two channels: cold air that does not pass through the warm air core 6 and hot air that does pass through the warm air core 6. As the mixing damper and its components 4 operate, the amount of cold air that does not pass through the warm air core 6 decreases, while the amount of hot air that passes through the warm air core 6 increases. The temperature at the outlet of the mode also rises linearly. The cavity formed by the two symmetrical first hot air channels 7b and third hot air channels 7f guides the hot air from the warm air core 6 to the air outlet 9. The channel formed by the two symmetrical first cold air channels 7g and third cold air channels 7j guides the cold air from the evaporator 1 to the air outlet 9. The hot air is thoroughly mixed with the cold air from the first cold air channel 7g and the third cold air channel 7j, and then blown out from the face-blowing damper 9. The second hot air channel 7e, which is enclosed by the middle structure of the air guide plate 7, is mixed with the hot air from the warm air core 6 and the two cold air channels 7h from the evaporator 1. After secondary distribution, the hot air is blown towards the foot-blowing damper 10 and the face-blowing damper 9. As the set temperature increases, the mixing damper and its components 4 operate from full cold to full hot. The corresponding air volume of the cold air channel decreases, while the air volume of the hot air channel increases. As a result, the temperature of the air outlet rises accordingly, achieving a linear increase in the temperature of the air outlet. The temperatures of the foot-blowing vent and the face-blowing vent maintain a reasonable temperature difference to meet the comfort requirements of the entire vehicle.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car air conditioning HVAC mixing structure, comprising an evaporator (1), an HVAC lower housing (2), a blower (3), a mixing damper and its assembly (4), an HVAC middle housing (5), a heater core (6), an air guide plate (7), a distributor housing assembly (8), a face air damper (9), and a foot air damper (10), characterized in that: An evaporator (1) and a blower (3) are arranged sequentially between the lower HVAC housing (2) and the middle HVAC housing (5). A mixing damper and its components (4), a warm air core (6), and an air guide plate (7) are arranged sequentially between the middle HVAC housing (5) and the air distributor housing assembly (8).

2. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The air guide plate (7) includes two positioning posts (7a), a first mounting post (7c), and a second mounting post (7d). The positioning post (7a) is positioned in conjunction with the air distributor housing assembly (8). The first mounting post (7c) and the second mounting post (7d) are fixed to the air distributor housing assembly (8) by self-tapping screws. The positioning post (7a), the first mounting post (7c), and the second mounting post (7d) together fix the air guide plate (7).

3. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The top two sides of the air guide plate (7) are provided with a first hot air channel (7b) and a third hot air channel (7f). The cavity formed by the first hot air channel (7b) and the third hot air channel (7f) guides the hot air from the warm air core (6) to the face blowing air outlet. The hot air guided by the first hot air channel (7b) and the third hot air channel (7f) is fully mixed with the cold air guided by the first cold air channel (7g) and the third cold air channel (7j) and blown out from the face blowing air door (9).

4. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The cavity formed by the middle structure of the air guide plate (7) is the second hot air channel (7e). The hot air from the warm air core (6) is mixed with the two second cold air channels (7h) from the evaporator (1) and then distributed to the foot air door (10) and face air door (9).

5. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The evaporator (1) is arranged at 60° with the warm air core (6), and the blower (3) is placed on the rear side of the evaporator (1). The blower (3) is a double impeller centrifugal fan.

6. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The hybrid damper and its components (4) are sliding dampers and are driven by gears.

7. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The warm air core (6) is arranged on the mixing damper and its components (4).

8. The automotive air conditioning HVAC mixing structure according to claim 1, characterized in that: The air guide plate (7) is arranged above the warm air core (6).

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