A temperature air door and a guide cavity structure for improving air outlet temperature uniformity of an automobile air conditioner

Abstract

This invention discloses a temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning systems. It relates to the field of automotive air conditioning and solves the problem that existing automotive air conditioning temperature damper and air guide cavity structures are difficult to achieve uniform mixing and stable temperature rise and fall, easily leading to uneven temperature distribution at each air outlet. The structure includes an evaporator housing, a damper mechanism, a mixing mechanism, and a drive mechanism. The mixing mechanism includes multiple device boxes, each with a mixing rod rotatably connected inside. This temperature damper and air guide cavity structure improves the uniformity of air outlet temperature in automotive air conditioning systems. The damper mechanism is used to adjust the air outlet state and improve the gradual uniformity of temperature adjustment. The mixing mechanism mixes the gas passing through the device boxes by rotating the mixing rod, resulting in a more uniform mixing of hot and cold air. The airflow drives the mixing rod to rotate, causing the gas to flow unidirectionally and be discharged.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, specifically to a temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning systems. Background Technology

[0002] Automotive air conditioning is a device that ventilates, cools, heats, and dehumidifies the interior of a car. Based on its operating state, it can be divided into three modes: full-heat defrost mode, full-heat foot / face blowing mode, and full-cool face / foot blowing mode. Full-cool mode provides cooling, full-heat mode provides heating, and face, foot, and defrost modes direct airflow to different areas of the vehicle. Switching between different modes is achieved through the air damper switches inside the air conditioning unit. The air dampers in the air conditioning unit mainly include: internal / external circulation damper, face blowing damper, foot blowing damper, defrost damper, and temperature damper; the temperature damper is used to adjust the air conditioning unit to either air conditioning, heating, or a neutral state.

[0003] According to existing patent CN104501382B, due to space limitations, the evaporator core and heater core of existing automotive air conditioning assemblies are placed in the same assembly. This results in a small mixing area for cold and warm air, and the flat surface of the air damper makes it difficult to achieve uniform mixing and stable temperature regulation. This easily leads to uneven temperature distribution at the air outlets, reducing the temperature comfort of passengers inside the vehicle. Therefore, we propose a temperature damper and airflow guide cavity structure to improve the uniformity of automotive air conditioning outlet temperature. Summary of the Invention

[0004] The purpose of this invention is to provide a temperature damper and air guide cavity structure that facilitates temperature regulation and improves the uniformity of hot and cold air mixing, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning, comprising an evaporator housing, a damper mechanism, a mixing mechanism, and a driving mechanism. The evaporator housing is fixedly connected to a left heater housing, a right heater housing, a left footwell housing, a right footwell housing, an evaporator core, and a heater core. The evaporator housing is provided with a front air outlet, a rear air outlet, a left front footwell outlet, a left rear footwell outlet, a right front footwell outlet, a right rear footwell outlet, and a defrost outlet. The damper mechanism is installed inside the evaporator housing and is used to adjust the air outlet states of the front air outlet, the left front footwell outlet, the left rear footwell outlet, the rear air outlet, the right rear footwell outlet, and the right front footwell outlet, and to ensure that... The gradual uniformity of temperature regulation is improved. The mixing mechanism includes multiple device boxes respectively installed in the evaporator shell, the left heating shell, the left foot shell, the right foot shell, and the right heating shell. A mixing rod is rotatably connected inside the device box. The mixing mechanism is used to mix the gas passing through the device box by rotating the mixing rod, so as to make the mixing of hot and cold air more uniform. The driving mechanism is installed in the device box and is used to drive the mixing rod to rotate by airflow, so that the gas flows unidirectionally and is discharged to the front air outlet, the left front foot outlet, the left rear foot outlet, the rear air outlet, the right rear foot outlet, and the right front foot outlet, which facilitates the improvement of temperature regulation uniformity and makes the mixing of hot and cold air more uniform.

[0006] Preferably, the damper mechanism includes a temperature damper, a foot damper, a front blowing damper, a defrost damper, and a rear blowing damper rotatably connected to the evaporator housing. A rear blowing guide plate is fixedly connected inside the evaporator housing. A control shaft rotatably connected to the evaporator housing is fixedly connected to the temperature damper. The temperature damper is provided with a first protrusion, a second protrusion, a third protrusion, and a fourth protrusion to make the temperature change more uniform. A guide cavity is fixedly connected to the rear blowing guide plate to facilitate control and make the temperature change more uniform.

[0007] Preferably, the mixing mechanism further includes a conical toothed ring installed inside the device box. The device box has two sets of symmetrically distributed air inlets and an air outlet. Multiple sets of fan blades are fixedly connected to the conical toothed ring and uniformly fixedly connected to the outer wall of the mixing rod. A partition net is fixedly connected inside the device box. The mixing rod passes through the partition net and is rotatably connected to the partition net. The driving mechanism is used to drive the conical toothed ring to rotate in one direction to achieve the purpose of unidirectional air discharge, so as to facilitate the uniform mixing of hot and cold air before discharge.

[0008] Preferably, the driving mechanism includes two sets of fixed tubes fixedly installed inside the device box. A drive shaft is rotatably connected inside the fixed tube. Multiple sets of drive blades that are rotatably connected to the inner wall of the fixed tube are uniformly fixedly connected to the drive shaft. A bevel gear that meshes with the bevel gear ring is coaxially fixedly connected to the drive shaft. The arc directions of the drive blades on the two sets of drive shafts are opposite. The device box is provided with a guide for controlling the flow direction of the internal gas. The device box is provided with an opening and closing component for controlling the opening of the air outlet when the mixing rod rotates, so as to facilitate the rotation and mixing of the mixing rod by airflow.

[0009] Preferably, the flow guide includes a flow guide pipe fixedly installed inside the device box. The device box has a first arc-shaped cavity communicating with the air inlet, and a second arc-shaped cavity communicating with the flow guide pipe. The fixed pipe has an air inlet groove for connecting the inside of the fixed pipe with the first arc-shaped cavity, and an air outlet groove for connecting the inside of the fixed pipe with the second arc-shaped cavity. The upper side of the flow guide pipe is connected to the space above the partition net to facilitate control of the internal gas flow direction.

[0010] Preferably, the opening and closing component includes two sets of opening and closing plates slidably connected to the bottom of the device box. Each of the two sets of opening and closing plates has a communication port that can communicate with the air outlet. A sleeve is fixedly connected inside the device box. A sliding rod that is fixedly connected to the opening and closing plate is slidably connected inside the sleeve. A fixed box is fixedly connected inside the device box. The sleeve is fixedly connected to the bottom end of the fixed box and communicates with the fixed box. The fixed box is provided with a control component for opening and closing the opening and closing plates in conjunction with the rotation of the mixing rod, so as to facilitate the linkage control of the air outlet to open when the mixing rod rotates.

[0011] Preferably, the control component includes a rotating tube rotatably connected to the fixed box, the rotating tube communicating with the fixed box, multiple sets of connecting tubes communicating with the rotating tube being uniformly fixedly connected to the mixing rod, a centrifugal block being slidably connected inside the connecting tube, a tension spring being fixedly connected to one side of the centrifugal block and fixedly connected to the connecting tube, and the fixed box being used to store liquid, so as to facilitate the opening and closing of the linkage opening and closing plate when the mixing rod rotates.

[0012] Preferably, multiple sets of stirring rods are uniformly fixedly connected to the mixing rod, which facilitates the uniform mixing of hot and cold air inside the device box.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention provides a temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning systems. The rotation angle of the temperature damper is adjusted by rotating a control shaft, thereby regulating its position within the evaporator housing and controlling the heating / cooling state. When the temperature damper is half-open, rotating it counter-clockwise to its limit position achieves a fully cold state, where the airflow does not pass through the heater core for heating. Rotating it clockwise to its limit position achieves a fully warm state, where all the airflow passes through the heater core for heating. The temperature damper needs to rotate 105 degrees to reach a fully warm state. Because the back of the temperature damper is uneven and has inconsistent thickness, there is an inconsistent gap S between the back of the temperature damper and the upper end of the heater core. When the gap is large, some of the cold air flowing through the evaporator core passes through the gap, suppressing the hot air flowing through the heater core, resulting in a smaller amount of hot air flowing out. When the gap is small, the cold air flowing through the evaporator core does not pass through the gap, and the hot air flowing through the heater core is not suppressed, resulting in a larger amount of hot air flowing out, thus achieving the purpose of uniform switching between cold and hot air.

[0014] 2. This invention provides a temperature damper and guide cavity structure for improving the uniformity of airflow temperature in automotive air conditioning systems. The exhaust air flows through the device box for mixing, first entering the first arc-shaped cavity through the air inlet, then entering the fixed pipe through the air inlet slot, pushing the drive blades to rotate in the airflow direction. This causes the drive shaft to rotate. After reaching the air outlet slot, the airflow exits into the second arc-shaped cavity, enters the guide pipe, and exits into the space above the separator mesh. Simultaneously, the drive shaft drives the bevel gear to rotate, causing the bevel gear ring to rotate, which in turn drives the fan blades and mixing rod to rotate, driving the airflow. At the same time, the mixing rod drives the stirring rod to rotate, mixing the hot and cold air above the separator mesh. Then, the mixture is evenly mixed through the dispersing effect of the separator. When the mixing rod rotates, it drives the connecting pipe and the rotating pipe to rotate, and the centrifugal block is thrown out for centrifugation, thereby pushing the internal liquid to flow outward into the fixed box. It enters the sleeve pipe and pushes the sliding rod to slide, which opens the opening and closing plates on both sides, connecting the connecting port with the air outlet. The gas inside the device box is mixed and then discharged through the air outlet. When the mixing rod stops rotating, the tension spring pulls back and drives the centrifugal block to move in the opposite direction, creating a suction effect, which draws the liquid in the sleeve pipe into the fixed box and the connecting pipe. The sliding rod drives the opening and closing plates to slide in the opposite direction to block the air outlet, preventing outside air and dust from flowing back into the device box and causing pollution. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 Enlarged view of region A in the middle; Figure 5This is a cross-sectional view of the overall structure of the present invention; Figure 6 This is a schematic diagram of the damper mechanism structure of the present invention; Figure 7 for Figure 6 Enlarged view of region B in the middle; Figure 8 This is a partial structural diagram of the present invention; Figure 9 This is a schematic diagram of the temperature damper structure of the present invention; Figure 10 This is a schematic diagram of the rear blowing surface guide plate structure of the present invention; Figure 11 This is a schematic diagram of the device box structure of the present invention; Figure 12 This is a schematic diagram of the drive mechanism structure of the present invention; Figure 13 This is a cross-sectional view of the drive mechanism structure of the present invention; Figure 14 This is a schematic diagram of the hybrid mechanism structure of the present invention; Figure 15 This is a schematic diagram of the flow guide structure of the present invention; Figure 16 This is a cross-sectional view of the hybrid mechanism structure of the present invention; Figure 17 for Figure 16 Enlarged view of region C; Figure 18 This is a cross-sectional view of the control component structure of the present invention; Figure 19 for Figure 18 Enlarged view of region D in the middle.

[0016] In the diagram: 1-Evaporator housing; 2-Left heating air housing; 3-Right heating air housing; 4-Left foot blowing housing; 5-Right foot blowing housing; 6-Evaporator core; 7-Heat air core; 8-Front air blowing outlet; 9-Rear air blowing outlet; 10-Left front foot blowing outlet; 11-Left rear foot blowing outlet; 12-Right front foot blowing outlet; 13-Right rear foot blowing outlet; 14-Damper mechanism; 15-Mixing mechanism; 16-Package box; 17-Mixing rod; 18-Drive mechanism; 19-Temperature damper; 20-Foot blowing damper; 21-Front air blowing damper; 22-Defrosting damper; 23-Rear air blowing damper; 24-Rear air blowing guide plate; 25-Control shaft; 26-First protrusion; 27- 28-Second protrusion; 29-Third protrusion; 30-Fourth protrusion; 31-Guide cavity; 32-Bevel gear ring; 33-Air inlet; 34-Air outlet; 35-Fan blade; 36-Separator net; 37-Fixed pipe; 38-Drive shaft; 39-Drive blade; 40-Bevel gear; 41-Guide component; 42-Opening and closing component; 43-Guide pipe; 44-Second arc cavity; 45-Air inlet slot; 46-Air outlet slot; 47-Opening and closing plate; 48-Connecting port; 49-Sleeve pipe; 50-Sliding rod; 51-Fixed box; 52-Control component; 53-Rotating pipe; 54-Connecting pipe; 55-Centrifugal block; 56-Tension spring; 57-Stirring rod; 58-Defrosting air outlet. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-19This invention provides a technical solution: a temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning, comprising an evaporator housing 1, a damper mechanism 14, a mixing mechanism 15, and a drive mechanism 18. The evaporator housing 1 is fixedly connected to a left heater housing 2, a right heater housing 3, a left foot blower housing 4, a right foot blower housing 5, an evaporator core 6, and a heater core 7. The evaporator housing 1 is provided with a front air outlet 8, a rear air outlet 9, a left front foot blower outlet 10, a left rear foot blower outlet 11, a right front foot blower outlet 12, a right rear foot blower outlet 13, and a defrost outlet 58. The damper mechanism 14 is installed inside the evaporator housing 1 and is used to adjust the front air outlet 8, the left front foot blower outlet 10, the left rear foot blower outlet 11, the rear air outlet 9, the right rear foot blower outlet 13, and the right front foot blower outlet. The air outlet state of 12 improves the gradual uniformity of temperature regulation. The mixing mechanism 15 includes multiple device boxes 16 installed in the evaporator housing 1, the left heating air housing 2, the left foot blowing housing 4, the right foot blowing housing 5, and the right heating air housing 3, respectively. A mixing rod 17 is rotatably connected in the device box 16. The mixing rod 17 is made of heat-resistant plastic. The mixing mechanism 15 is used to mix the gas passing through the device box 16 by rotating the mixing rod 17, so that the hot and cold air are mixed more evenly. The drive mechanism 18 is installed in the device box 16 and is used to drive the mixing rod 17 to rotate by the airflow, so that the gas flows in one direction and is discharged to the front blowing air outlet 8, the front foot left air outlet 10, the rear foot left air outlet 11, the rear blowing air outlet 9, the rear foot right air outlet 13, and the front foot right air outlet 12.

[0019] The damper mechanism 14 includes a temperature damper 19, a foot damper 20, a front blowing damper 21, a defrost damper 22, and a rear blowing damper 23, which are rotatably connected to the evaporator housing 1. A rear blowing guide plate 24 is fixedly connected inside the evaporator housing 1. A control shaft 25, which is rotatably connected to the evaporator housing 1, is fixedly connected to the temperature damper 19. The temperature damper 19 is provided with a first protrusion 26, a second protrusion 27, a third protrusion 28, and a fourth protrusion 29 to make the temperature change more uniform. The shapes of the first protrusion 26, the second protrusion 27, the third protrusion 28, and the fourth protrusion 29 are shown in the attached figure. A guide cavity 30 is fixedly connected to the rear blowing guide plate 24.

[0020] The mixing mechanism 15 also includes a conical ring 31 installed in the device box 16. The device box 16 has two sets of symmetrically distributed air inlets 32 and an air outlet 33. Multiple sets of fan blades 34 are fixedly connected to the conical ring 31 and uniformly fixedly connected to the outer wall of the mixing rod 17. Multiple sets of stirring rods 57 are uniformly fixedly connected to the mixing rod 17. A partition net 35 is fixedly connected in the device box 16. The mixing rod 17 passes through the partition net 35 and is rotatably connected to the partition net 35. The driving mechanism 18 is used to drive the conical ring 31 to rotate in one direction to achieve the purpose of unidirectional air discharge.

[0021] The drive mechanism 18 includes two sets of fixed tubes 36 fixedly installed in the device box 16. A drive shaft 37 is rotatably connected inside the fixed tube 36. Multiple sets of drive blades 38 that are rotatably connected to the inner wall of the fixed tube 36 are evenly fixedly connected to the drive shaft 37. A bevel gear 39 that meshes with the bevel gear ring 31 is coaxially fixedly connected to the drive shaft 37. The drive blades 38 on the two sets of drive shafts 37 have opposite arc directions. The device box 16 is provided with a guide 40 for controlling the flow direction of the internal gas. The device box 16 is provided with an opening and closing part 41 for controlling the opening of the air outlet 33 when the mixing rod 17 rotates.

[0022] The flow guide 40 includes a flow guide pipe 42 fixedly installed in the device box 16. The device box 16 has a first arc-shaped cavity 43 connected to the air inlet 32 ​​and a second arc-shaped cavity 44 connected to the flow guide pipe 42. The fixed pipe 36 has an air inlet groove 45 for connecting the inside of the fixed pipe 36 with the first arc-shaped cavity 43 and an air outlet groove 46 for connecting the inside of the fixed pipe 36 with the second arc-shaped cavity 44. The upper side of the flow guide pipe 42 is connected to the space above the partition net 35.

[0023] The opening and closing component 41 includes two sets of opening and closing plates 47 that are slidably connected to the bottom of the device box 16. Each set of opening and closing plates 47 has a communication port 48 that can communicate with the air outlet 33. A sleeve pipe 49 is fixedly connected inside the device box 16. A sliding rod 50 that is fixedly connected to the opening and closing plate 47 is slidably connected inside the sleeve pipe 49. A fixed box 51 is fixedly connected inside the device box 16. The sleeve pipe 49 is fixedly connected to the bottom end of the fixed box 51 and communicates with the fixed box 51. The fixed box 51 is provided with a control component 52 for opening and closing the opening and closing plate 47 in conjunction with the rotation of the mixing rod 17.

[0024] The control component 52 includes a rotating tube 53 rotatably connected to the fixed box 51. The rotating tube 53 is connected to the fixed box 51. Multiple sets of connecting tubes 54, which are connected to the rotating tube 53, are uniformly fixedly connected to the mixing rod 17. A centrifugal block 55 is slidably connected inside the connecting tube 54. A tension spring 56, which is fixedly connected to the connecting tube 54, is fixedly connected to one side of the centrifugal block 55. The fixed box 51 is used to store liquid.

[0025]

[0026] The rotation angle of the temperature damper 19 is adjusted by rotating the control shaft 25, thereby adjusting its position within the evaporator housing 1 and controlling the heating / cooling state. When the temperature damper 19 is in a half-open state, rotating it counterclockwise to its limit position results in a fully cold state, where the airflow does not pass through the heating core 7 for heating. Rotating it clockwise to its limit position results in a fully warm state, where the airflow passes through the heating core 7 for heating. The temperature damper 19 needs to rotate 105 degrees to go from fully cold to fully hot. Because the back of the temperature damper 19 is uneven and has inconsistent thickness, there is a gap between the back of the temperature damper 19 and the upper part of the heating core 7. With inconsistent gaps S, when the gap is large, some of the cold air flowing through the evaporator core 6 passes through the gap, suppressing the hot air flowing through the warm air core 7, resulting in a smaller amount of hot air flowing out. When the gap is small, the cold air flowing through the evaporator core 6 does not pass through the gap, and the hot air flowing through the warm air core 7 is not suppressed, resulting in a larger amount of hot air flowing out. Referring to the experimental results (the damper position was rotated from all cold to all hot, a total of 8 rotations, for a total of 9 damper positions): the rear blowing surface showed a trend of temperature first rising, then falling, and then rising again, which would cause passenger discomfort; the temperature should be a continuously rising trend.

[0027] The rear-blowing deflector 24 directs a significant amount of airflow into the rear-blowing outlet 9, blocking the upward flow of air out of the front-blowing outlet 8. Because the width L of the rear-blowing deflector 24 is the same as the width of the rear-blowing outlet 9, it only affects the airflow at the rear-blowing outlet 9 and not the airflow in other areas. The airflow still flows upward normally out of the front-blowing outlet 8. This results in inconsistent flow rates and temperatures between the middle and side areas of the front-blowing outlet 8, with the side areas being warmer than the middle area. Based on experimental results, the temperature in the middle area of ​​the front-blowing outlet is lower than the side areas, leading to a lower temperature in the middle of the passenger compartment compared to the side areas. The temperature difference should be controlled within 3℃, which is currently not met in most locations. The thickness of the first protrusion 26 in a localized area on the back of the temperature damper 19 is increased, reducing the gap S between it and the upper end of the warm air core 7. This prevents the cold air passing through the evaporator core 6 from flowing out through the lower side of the temperature damper 19, allowing the hot air passing through the warm air core 7 to flow out smoothly. This thickness increases continuously as the temperature damper 19 rotates from fully cold to fully hot. The first protrusion 26 in the area of ​​increased thickness on the temperature damper 19 has the same width as the rear air outlet and the same width L as the guide plate, and its thickness is uniform. The gap S between the back of the temperature damper 19 and the upper end of the warm air core 7 is very small, allowing the hot air flowing through the warm air core 7 to flow into the rear air outlet, increasing the temperature of the air exiting the rear air outlet. As the temperature damper 19 rotates from fully cold to fully hot, the consistent gap S allows the hot air flowing through the warm air core 78 to continuously increase, resulting in an upward trend in the rear air outlet temperature. Based on experimental results, the rear air outlet temperature of the new design shows an upward trend.

[0028] The rear-blowing guide plate 24 incorporates a guide cavity 30. This cavity serves two purposes: firstly, it prevents cold air from mixing with the upper part of the temperature damper 19; secondly, it directs the hot air passing through the warm air core 7 upwards, increasing the temperature in the middle region of the front-blowing outlet 8. The guide cavity 30 points towards the front-blowing outlet 8, with a width W of 15mm and a length L1 consistent with the width L1 of the rear-blowing guide plate 24. This allows the hot air from the warm air core 7 to directly blow onto the front-blowing outlet 8 without interfering with other structures, increasing the temperature in the middle region of the front-blowing outlet 8, reducing the temperature difference between the middle and sides of the outlet 8, and improving temperature uniformity. Based on experimental results, the temperature difference between the middle and side regions of the front-blowing outlet in the new design remains less than 3℃ during the rotation of the temperature damper 19, meeting the requirements.

[0029] The exhaust air flows through the device box 16 for mixing before passing through the front air outlet 8, rear air outlet 9, front foot left air outlet 10, rear foot left air outlet 11, front foot right air outlet 12, and rear foot right air outlet 13. It first enters the first arc-shaped cavity 43 through the air inlet 32, then enters the fixed pipe 36 through the air inlet groove 45, pushing the drive blade 38 to rotate in the airflow direction, thereby causing the drive shaft 37 to rotate. After reaching the air outlet groove 46, the airflow is discharged into the second arc-shaped cavity 44, enters the guide pipe 42, and is discharged into the space above the separator 35. Simultaneously, the drive shaft 37 drives the bevel gear 39 to rotate, which in turn causes the bevel gear ring 31 to rotate, driving the fan blade 34 and mixing rod 17 to rotate together. The fan blade 34 rotates to fan the airflow, while the mixing rod 17 drives the stirring rod 57 to rotate, stirring and mixing the hot and cold air above the separator 35. The mixture is then evenly mixed through the dispersion effect of the separator 35. The air inlet grooves 45 and outlet grooves 46 on both sides are in opposite directions, which makes the drive shafts 37 on both sides rotate in opposite directions. This ensures that the bevel gears 39 on both sides can drive the bevel gear ring 31 to rotate in one direction at the same time. When the mixing rod 17 rotates, it will drive the connecting pipe 54 and the rotating pipe 53 to rotate. The centrifugal block 55 is thrown out to centrifuge, thereby pushing the internal liquid to flow outward into the fixed box 51 and into the sleeve pipe 49 to push the sliding rod 50 to slide, which opens the opening and closing plates 47 on both sides so that the connecting port 48 is connected to the air outlet 33. The gas inside the device box 16 is mixed and discharged through the air outlet 33. When the mixing rod 17 stops rotating, the tension spring 56 pulls back and drives the centrifugal block 55 to move in the opposite direction to form a suction effect, so that the liquid in the sleeve pipe 49 is drawn into the fixed box 51 and the connecting pipe 54. The sliding rod 50 drives the opening and closing plates 47 to slide in the opposite direction to block the air outlet 33, preventing outside air and dust from flowing back into the device box 16 and causing pollution.

[0030] 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.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning systems, characterized in that, include: Evaporator housing (1), on which are fixedly connected a left warm air housing (2), a right warm air housing (3), a left blower housing (4), a right blower housing (5), an evaporator core (6) and a warm air core (7), and a front blower air outlet (8), a rear blower air outlet (9), a left front blower air outlet (10), a left rear blower air outlet (11), a right front blower air outlet (12), a right rear blower air outlet (13) and a defrost air outlet (58); It also includes: a damper mechanism (14), which is installed inside the evaporator housing (1) and is used to adjust the air outlet status of the front blowing surface air outlet (8), the front blowing foot left air outlet (10), the rear blowing foot left air outlet (11), the rear blowing surface air outlet (9), the rear blowing foot right air outlet (13) and the front blowing foot right air outlet (12), and to improve the gradual uniformity of temperature adjustment; The mixing mechanism (15) includes multiple sets of device boxes (16) respectively installed in the evaporator shell (1), the left heating shell (2), the left foot shell (4), the right foot shell (5) and the right heating shell (3). The device box (16) has two sets of symmetrically distributed air inlets (32) and an air outlet (33) on it. A mixing rod (17) is rotatably connected inside the device box (16). The mixing mechanism (15) is used to mix the gas passing through the device box (16) by rotating the mixing rod (17) to make the hot and cold air mix more evenly. The drive mechanism (18) is installed inside the device box (16) and is used to drive the mixing rod (17) to rotate by airflow, so that the gas flows in one direction and is discharged to the front blowing surface air outlet (8), the front blowing foot left air outlet (10), the rear blowing foot left air outlet (11), the rear blowing surface air outlet (9), the rear blowing foot right air outlet (13) and the front blowing foot right air outlet (12). The damper mechanism (14) includes a temperature damper (19) rotatably connected to the evaporator housing (1). The temperature damper (19) is provided with a temperature damper for adjusting the temperature. The evaporator housing (1) has a first protrusion (26), a second protrusion (27), a third protrusion (28), and a fourth protrusion (29) with a more uniform gradient. A rear blowing surface guide plate (24) is fixedly connected inside the evaporator housing (1). A guide cavity (30) is fixedly connected to the rear blowing surface guide plate (24). The mixing mechanism (15) also includes a conical toothed ring (31) installed inside the device box (16). Multiple sets of fan blades (34) are fixedly connected to the conical toothed ring (31) and are uniformly fixedly connected to the outer wall of the mixing rod (17). A partition net (35) is fixedly connected inside the device box (16). The mixing rod (17) passes through... The drive mechanism (18) includes two sets of fixed tubes (36) fixedly installed inside the device box (16). A drive shaft (37) is rotatably connected inside the fixed tubes (36). Multiple sets of drive blades (38) rotatably connected to the inner wall of the fixed tubes (36) are evenly fixedly connected to the drive shaft (37). A bevel gear (39) meshing with the bevel ring (31) is coaxially fixedly connected to the drive shaft (37). A fixed box (51) is fixedly connected inside the device box (16). The fixed box (51) is equipped with a control... The component (52) includes a rotating tube (53) rotatably connected to the fixed box (51), the rotating tube (53) being connected to the fixed box (51), and multiple sets of connecting tubes (54) connected to the rotating tube (53) being uniformly fixedly connected on the mixing rod (17). A centrifugal block (55) is slidably connected inside the connecting tube (54), and a tension spring (56) fixedly connected to the connecting tube (54) is fixedly connected to one side of the centrifugal block (55). The driving mechanism (18) is used to drive the bevel ring (31) to rotate in one direction to achieve the purpose of unidirectional air discharge.

2. The temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 1, characterized in that: The damper mechanism (14) further includes a foot damper (20), a front blowing damper (21), a defrost damper (22) and a rear blowing damper (23) rotatably connected to the evaporator housing (1), and a control shaft (25) rotatably connected to the temperature damper (19).

3. The temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 2, characterized in that: The drive blades (38) on the two sets of drive shafts (37) have opposite arc directions. The device box (16) is provided with a guide (40) for controlling the flow direction of the internal gas. The device box (16) is provided with an opening and closing part (41) for controlling the opening of the air outlet (33) when the mixing rod (17) rotates.

4. The temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 3, characterized in that: The flow guide (40) includes a flow guide pipe (42) fixedly installed in the device box (16). The device box (16) has a first arc-shaped cavity (43) connected to the air inlet (32) and a second arc-shaped cavity (44) connected to the flow guide pipe (42). The fixed pipe (36) has an air inlet groove (45) for connecting the inside of the fixed pipe (36) with the first arc-shaped cavity (43) and an air outlet groove (46) for connecting the inside of the fixed pipe (36) with the second arc-shaped cavity (44). The upper side of the flow guide pipe (42) is connected to the space above the partition net (35).

5. The temperature damper and airflow guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 4, characterized in that: The opening and closing component (41) includes two sets of opening and closing plates (47) that are slidably connected to the bottom of the device box (16). Both sets of opening and closing plates (47) are provided with a communication port (48) that can communicate with the air outlet (33). A sleeve pipe (49) is fixedly connected inside the device box (16). A sliding rod (50) that is fixedly connected to the opening and closing plate (47) is slidably connected inside the sleeve pipe (49). The sleeve pipe (49) is fixedly connected to the bottom end of the fixed box (51). The sleeve pipe (49) is connected to the fixed box (51).

6. The temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 5, characterized in that: The fixed box (51) is used to store liquid.

7. The temperature damper and air guide cavity structure for improving the uniformity of air outlet temperature in automotive air conditioning according to claim 1, characterized in that: Multiple sets of stirring rods (57) are uniformly fixedly connected to the mixing rod (17).

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