An automobile air conditioner header assembly

Abstract

The application provides an automobile air conditioner manifold assembly, which comprises a manifold, a plurality of slots are equidistantly formed in the manifold, and a drying pipe is installed on the manifold through fixing pieces, and the fixing pieces are at least two in number and are used for fixing the drying pipe on the manifold. When the filter bag is blocked by sundries for a long time, the refrigerant passing through the filter bag is hindered, the pressure in the drying pipe is increased, the first piston block is driven to move along the inside of the L-shaped pipe, the second piston block is driven to move upwards along the L-shaped pipe through the hydraulic oil transmission between the first piston block and the second piston block, the fixing rod on the top of the second piston block moves along the hollow rod until the squeeze control switch, the control switch starts the alarm in the automobile to give an alarm, and thus the excessive pressure in the manifold can be conveniently and timely prompted, and the refrigerant can be prevented from leaking due to the excessive pressure.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, and more particularly to an automotive air conditioning manifold assembly. Background Technology

[0002] The automotive air conditioning manifold is the core fluid distribution component of the automotive air conditioning condenser. It is usually a long strip of metal tube with slots on the side for installing heat dissipation flat tubes. The internal flow channels are separated by baffles to realize the collection, distribution and flow direction switching of refrigerant, ensuring heat exchange efficiency and system stability.

[0003] The manifold assembly also includes a dryer tube and a mounting bracket. During operation, refrigerant flows through the dryer tube, where moisture is absorbed by the desiccant and some impurities are trapped by the filter bag to ensure refrigerant purity. However, over time, the filter bag can become clogged due to impurity buildup, leading to decreased refrigerant flow efficiency and increased internal pressure. Since both the manifold and dryer tubes are thin-walled structures, increased pressure can easily cause pipe rupture, resulting in refrigerant leakage and ultimately refrigeration system failure. Therefore, a device is needed to address these issues. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing technology. The present invention proposes an automotive air conditioning manifold assembly.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A car air conditioning manifold assembly includes: a manifold with a plurality of slots evenly spaced on it; a drier tube mounted on the manifold by fasteners, at least two of which are used to fix the drier tube to the manifold; an outlet connector for fixing the drier tube to the manifold, through which refrigerant enters the manifold from the drier tube; an L-shaped tube mounted on the drier tube; a first piston block and a second piston block, both slidably mounted inside the L-shaped tube, with hydraulic oil filling the space between the first and second piston blocks; and a positioning assembly. A positioning component is installed between the first piston block, the second piston block, and the inner wall of the L-shaped tube. This component prevents the first and second piston blocks from shifting when moving inside the L-shaped tube. A spring is installed between the second piston block and the L-shaped tube, and its elasticity is used to reset the second piston block. An exhaust port is located at the top of the L-shaped tube and is used to expel air from inside the tube. A control switch is installed at the top of the second piston block and is electrically connected to an alarm installed on the vehicle, which is within the driver's line of sight. A sealing component is installed between the first piston block, the second piston block, and the inner wall of the L-shaped tube.

[0006] Preferably, the sealing assembly includes a second annular groove formed outside the first piston block and the second piston block, and at least one second annular groove is formed; a second rubber sealing ring is installed inside the second annular groove with an interference fit.

[0007] Preferably, the positioning assembly includes a hollow rod mounted on the second piston block and the inner wall of the L-shaped tube; it also includes a fixed rod mounted on the inner wall of the L-shaped tube and the first piston block, the fixed rod being movably inserted into the hollow rod and moving axially along the hollow rod.

[0008] Preferably, the fastener includes a fixing ring installed on the outside of the drying tube and an extension block installed on the fixing ring, the extension block being installed on the manifold.

[0009] Preferably, it also includes plugs installed at both ends of the manifold; it also includes a fixing component installed on the manifold for fixing the manifold to the installation point; and it also includes a partition installed inside the manifold.

[0010] Preferably, at least two partitions are provided, which are used to divide the inside of the manifold into several independent spaces.

[0011] Preferably, the fixing component includes L-shaped blocks symmetrically installed at both ends of the manifold; the L-shaped blocks have mounting holes; it also includes an extension piece installed on the L-shaped blocks, one of which is installed on the top L-shaped block; the L-shaped blocks have positioning holes.

[0012] Preferably, it also includes an inlet pipe installed on the drying tube, through which refrigerant flows into the interior of the drying tube; and a filter assembly for drying and filtering installed inside the drying tube.

[0013] Preferably, the filter assembly includes a locking block that is threadedly installed at the end of the drying tube; the top of the locking block has a screw groove for disassembling the locking block, and the cross-section of the screw groove is a regular polygon; a filter bag is clamped and fixed at the bottom of the locking block by a clamping unit, and the filter bag is filled with molecular sieve desiccant; it also includes a first annular groove formed on the outside of the locking block, and at least one first annular groove is formed; a first rubber sealing ring is interference-fitted into the first annular groove.

[0014] Preferably, the clamping unit includes a U-shaped block installed at the bottom of the clamping block, with the opening of the U-shaped block facing downwards; a screw is threaded onto the U-shaped block, and the screw moves axially along the U-shaped block by rotation.

[0015] Compared with the prior art, the beneficial effects of the present invention include: 1. When used for a long time, the filter holes of the filter bag become clogged with debris, causing the refrigerant that needs to pass through the filter bag to be obstructed. At this time, the internal pressure of the dryer tube increases. This pressure drives the first piston block to move along the inside of the L-shaped tube. Through the hydraulic oil transmission between the first and second piston blocks, the second piston block moves upward along the L-shaped tube. At this time, the fixed rod located at the top of the second piston block moves along the hollow rod until it presses the control switch. The control switch activates the alarm in the car to sound an alarm. This convenient and timely reminder of excessive pressure inside the manifold prevents refrigerant leakage due to excessive pressure.

[0016] 2. The filter bag inside the U-shaped block is squeezed by the screw, thus fixing the filter bag and preventing it from moving along the drying tube during use, causing it to fall off the filter point position. This would make it difficult to quickly remove the filter bag during subsequent disassembly and replacement, thus improving the convenience of filter bag replacement. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the structure of an automotive air conditioning manifold assembly proposed in this invention; Figure 2 This is a first cross-sectional view of an automotive air conditioning manifold assembly proposed in this invention; Figure 3 This is a second cross-sectional view of an automotive air conditioning manifold assembly proposed in this invention; Figure 4 Appendix to this invention Figure 2 Enlarged view of point A in the middle; Figure 5 Appendix to this invention Figure 3 Enlarged view of point B in the middle; The following are the labels in the diagram: 1. Manifold; 2. Partition; 3. Slot; 4. Drying pipe; 5. Inlet connector; 6. Plug; 7. L-shaped block; 8. Extension piece; 9. Positioning hole; 10. Mounting hole; 11. L-shaped tube; 12. Outlet connector; 13. Filter bag; 14. Locking block; 15. Twisting groove; 16. First rubber sealing ring; 17. First annular groove; 18. U-shaped block; 19. Screw; 20. Exhaust port; 21. First piston block; 22. Second piston block; 23. Spring; 24. Fixing rod; 25. Hollow rod; 26. Control switch; 27. Second annular groove; 28. Second rubber sealing ring; 29. ​​Fixing component. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] According to one embodiment of the present invention, Figures 1-5 As shown.

[0020] An automotive air conditioning manifold assembly includes: a manifold 1 with several slots 3 evenly spaced on it for installing flat tubes. The slots 3 are linearly and uniformly arranged to ensure consistent spacing and uniform heat exchange after the flat tubes are inserted. A dryer tube 4 is riveted to the manifold 1 using fasteners 29. At least two fasteners 29 are provided to fix the dryer tube 4 to the manifold 1. Multiple riveting points improve connection rigidity and prevent loosening or detachment due to vehicle vibration. The dryer tube 4 is welded to the manifold 1 via an outlet connector 12, through which refrigerant enters the manifold 1 from the dryer tube 4. An L-shaped tube 11 is welded to the dryer tube 4. The L-shaped tube 11 has a bent, integrated structure, saving installation space and improving structural strength. A first piston block 21 and a second piston block 22 are slidably installed inside the L-shaped tube 11. Positioning components are installed between the first piston block 21, the second piston block 22, and the inner wall of the L-shaped tube 11. These components prevent the first piston block 21 and the second piston block 22 from shifting during movement within the L-shaped tube 11. Hydraulic oil is filled between the first piston block 21 and the second piston block 22, transmitting pressure and acting as a buffer. A spring 23 for resetting the second piston block 22 is welded and fixed between the second piston block 22 and the L-shaped tube 11. The spring 23 provides a stable restoring force, ensuring the piston block returns to its original position promptly after pressure reduction. An exhaust port 20 is provided at the top of the L-shaped tube 11 to expel air from inside the tube, preventing air accumulation and ensuring smooth piston movement. A control switch 26 is also included, embedded in the top of the second piston block 22. This switch 26 is electrically connected to an alarm (not shown in the figure) installed on the vehicle. The alarm is within the driver's line of sight; when abnormal pressure triggers the control switch 26, the alarm provides an audible and visual alert to remind the driver of a system malfunction. It also includes a sealing assembly installed between the first piston block 21, the second piston block 22 and the inner wall of the L-shaped tube 11. The sealing assembly can prevent hydraulic oil from leaking out and prevent external impurities from entering the interior of the L-shaped tube 11.

[0021] Specifically, the sealing assembly includes a second annular groove 27 formed on the outside of the first piston block 21 and the second piston block 22, and at least one second annular groove 27 is formed; a second rubber sealing ring 28 is installed inside the second annular groove 27 with an interference fit, and the second rubber sealing ring 28 is tightly fitted to the inner wall of the L-shaped tube 11 to achieve dynamic sealing and improve the sealing reliability when the piston moves.

[0022] Specifically, the positioning assembly includes a hollow rod 25 welded and fixed to the second piston block 22 and the inner wall of the L-shaped tube 11; it also includes a fixing rod 24 welded and fixed to the inner wall of the L-shaped tube 11 and the first piston block 21. The fixing rod 24 is movably inserted into the hollow rod 25 and moves axially along the hollow rod 25, thereby moving and positioning the first piston block 21 and the second piston block 22 to prevent the first piston block 21 and the second piston block 22 from shifting and jamming when moving inside the L-shaped tube 11. The coaxial guiding fit can reduce frictional resistance and improve the piston movement sensitivity and stability.

[0023] Specifically, the fastener 29 includes a fixing ring welded to the outside of the drying tube 4 and an extension block welded to the fixing ring. The extension block is riveted to the manifold 1. The fixing ring surrounds the outer wall of the drying tube 4, and the force is evenly distributed, which can effectively disperse vibration stress.

[0024] In this embodiment, the system also includes plugs 6 welded and fixed to both ends of the manifold 1. The plugs 6 are used to seal both ends of the manifold 1. The plugs 6 are fully welded to the end face of the manifold 1 to improve the end pressure bearing capacity and sealing effect. The system also includes a fixing component installed on the manifold 1 to fix the manifold 1 at the installation point. The system also includes a partition 2 welded and fixed inside the manifold 1. At least two partitions 2 are provided. The partitions 2 are used to divide the inside of the manifold 1 into several independent spaces. Multiple independent spaces can realize multi-flow refrigerant reversal, extend the heat exchange path and improve the overall heat exchange efficiency of the condenser.

[0025] Specifically, the fixing components include L-shaped blocks 7 symmetrically riveted and installed at both ends of the manifold 1; mounting holes 10 are provided on the L-shaped blocks 7; and extension pieces 8 are welded and fixed to the L-shaped blocks 7. There is one extension piece 8, which is installed on the top L-shaped block 7. The extension piece 8 can increase the support area and improve the structural stability after installation. Positioning holes 9 are provided on the L-shaped blocks 7. During installation, the positioning holes 9 are first fitted onto the positioning protrusions at the installation points to quickly position the manifold 1. Then, bolts are passed through the mounting holes 10 and used to fix the manifold 1 in place. The positioning holes 9 and the mounting holes 10 cooperate to achieve positioning before tightening, reducing assembly difficulty and improving installation accuracy.

[0026] In this embodiment, the system also includes an inlet pipe 5 embedded and fixed on the drying tube 4, through which the refrigerant flows into the interior of the drying tube 4; it also includes a filter assembly installed inside the drying tube 4 for drying and filtration, which can simultaneously filter impurities and adsorb moisture to ensure that the refrigerant is clean and dry.

[0027] Specifically, the filter assembly includes a locking block 14 threaded onto the end of the drying tube 4; a screw groove 15 for disassembling the locking block 14 is provided on the top of the locking block 14, wherein the cross-section of the screw groove 15 is a regular polygon, the regular polygon structure facilitates the engagement and force application of special tools, and facilitates disassembly and maintenance; a filter bag 13 is clamped and fixed at the bottom of the locking block 14 by a clamping unit, the filter bag 13 is filled with molecular sieve desiccant, the filter bag 13, together with the molecular sieve desiccant, filters and adsorbs moisture inside the refrigerant, the molecular sieve desiccant selectively adsorbs moisture and does not adsorb refrigerant and refrigeration oil, ensuring system circulation efficiency; it also includes a first annular groove 17 opened on the outside of the locking block 14, wherein at least one first annular groove 17 is opened; a first rubber sealing ring 16 is interference-fitted and installed inside the first annular groove 17, the first rubber sealing ring 16 is used to seal the position between the locking block 14 and the inner wall of the drying tube 4, the multiple sealing structure can further improve the sealing reliability and prevent high-pressure refrigerant from leaking from the thread gap.

[0028] Specifically, the clamping unit includes a U-shaped block 18 welded and fixed to the bottom of the clamping block 14, with the opening of the U-shaped block 18 facing downwards; a screw 19 is threadedly installed on the U-shaped block 18, and the screw 19 moves axially along the U-shaped block 18 by rotation; the top of the filter bag 13 is moved into the U-shaped block 18, and then the screw 19 is rotated to squeeze and fix the filter bag 13, so that the filter bag 13 is fixed at the bottom of the U-shaped block 18, thus preventing the filter bag 13 from moving inside the drying tube 4. When disassembling, the clamping block 14 is rotated by the screwing groove 15 until the clamping block 14 is disengaged from the inside of the drying tube 4, and the filter bag 13 is pulled out at the same time, which facilitates the replacement of the filter bag 13. The overall detachable design facilitates later maintenance.

[0029] Working principle: When in use, the alarm is installed within the driver's line of sight. Then, the refrigerant is injected into the drying tube 4 through the inlet pipe 5. After that, the refrigerant is filtered by the filter bag 13 when it passes through the filter bag 13. At the same time, the moisture inside the refrigerant is adsorbed by the molecular sieve desiccant. Then, the refrigerant is injected into the manifold 1 through the outlet pipe 12 and then circulated through the flat tube. When used for a long time, the filter holes of the filter bag 13 become clogged with debris, causing the refrigerant that needs to pass through the filter bag 13 to be blocked. At this time, the internal pressure of the drying tube 4 increases. This pressure drives the first piston block 21 to move along the inside of the L-shaped tube 11. Through the hydraulic oil transmission between the first piston block 21 and the second piston block 22, the second piston block 22 moves upward along the L-shaped tube 11, squeezing the spring 23 to a compressed state. The air at the top of the second piston block 22 is discharged through the exhaust port 20 to prevent the internal pressure of the L-shaped tube 11 from becoming too high. As the second piston block 22 moves upward along the L-shaped tube 11, the fixed rod 24 located at the top of the second piston block 22 moves along the hollow rod 25 until it squeezes the control switch 26. The control switch 26 activates the alarm in the car to indicate that the pressure inside the drying tube 4 is too high and the filter bag 13 needs to be replaced. When replacing the filter bag 13, rotate the locking block 14 by turning the screw groove 15 until the locking block 14 is disengaged from the inside of the drying tube 4, and simultaneously pull out the filter bag 13. Then rotate the screw 19 so that the screw 19 is away from the filter bag 13, and then move the filter bag 13 downward to remove the filter bag 13 and replace it with a new filter bag 13. Rotate the screw 19 in the opposite direction to squeeze and fix the new filter bag 13 again. Finally, reset the locking block 14, and the replacement of the filter bag 13 is completed.

[0030] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An automotive air conditioning manifold assembly, comprising: A manifold, wherein a plurality of slots are equally spaced on the manifold, characterized in that it further includes a drying tube, wherein the drying tube is mounted on the manifold by means of fasteners, and at least two fasteners are provided, the fasteners being used to fix the drying tube on the manifold; The outlet pipe is used to fix the drying pipe to the manifold, and the refrigerant enters the manifold from the drying pipe through the outlet pipe. L-shaped tube, the L-shaped tube being mounted on the drying tube; A first piston block and a second piston block are slidably installed inside an L-shaped tube, and hydraulic oil is filled between the first piston block and the second piston block. A positioning component is installed between the first piston block, the second piston block and the inner wall of the L-shaped tube. The positioning component prevents the first piston block and the second piston block from shifting when they move inside the L-shaped tube. A spring is installed between the second piston block and the L-shaped tube, and the spring force is used to reset the second piston block; An exhaust port is provided at the top of the L-shaped tube and is used to discharge air from inside the L-shaped tube. A control switch is mounted on top of the second piston block and is electrically connected to an alarm installed on the vehicle, which is within the driver's line of sight. A sealing assembly is installed between the first piston block, the second piston block, and the inner wall of the L-shaped tube.

2. The automotive air conditioning manifold assembly according to claim 1, characterized in that, The sealing assembly includes a second annular groove formed outside the first piston block and the second piston block, and at least one second annular groove is formed thereon. The second annular groove is fitted with a second rubber sealing ring through an interference fit.

3. The automotive air conditioning manifold assembly according to claim 1, characterized in that, The positioning assembly includes a hollow rod mounted on the second piston block and on the inner wall of the L-shaped tube; It also includes a fixing rod installed on the inner wall of the L-shaped tube and on the first piston block. The fixing rod is movably inserted into the hollow rod and moves axially along the hollow rod.

4. The automotive air conditioning manifold assembly according to claim 1, characterized in that, The fastener includes a fixing ring installed on the outside of the drying tube and an extension block installed on the fixing ring, the extension block being installed on the manifold.

5. The automotive air conditioning manifold assembly according to claim 1, characterized in that, It also includes plugs installed at both ends of the manifold; It also includes a fixing component installed on the manifold for securing the manifold to the mounting point; It also includes a baffle installed inside the manifold.

6. The automotive air conditioning manifold assembly according to claim 5, characterized in that, At least two partitions are provided, which are used to divide the inside of the manifold into several independent spaces.

7. The automotive air conditioning manifold assembly according to claim 5, characterized in that, The fixing assembly includes L-shaped blocks symmetrically installed at both ends of the manifold; The L-shaped block is provided with mounting holes; It also includes an extension piece mounted on the L-shaped block, wherein one extension piece is provided and mounted on the top L-shaped block; The L-shaped block has positioning holes.

8. The automotive air conditioning manifold assembly according to claim 1, characterized in that, It also includes an inlet pipe installed on the drying tube, through which refrigerant flows into the interior of the drying tube; It also includes a filter assembly for drying and filtering installed inside the drying tube.

9. The automotive air conditioning manifold assembly according to claim 8, characterized in that, The filter assembly includes a locking block that is threadedly mounted to the end of the drying tube; The top of the card block has a screw groove for disassembling the card block, and the cross-section of the screw groove is a regular polygon; The bottom of the card block is clamped and fixed with a filter bag by a clamping unit, and the filter bag is filled with molecular sieve desiccant. It also includes a first annular groove formed on the outside of the card block, and the first annular groove has at least one opening; The first annular groove is fitted with a first rubber sealing ring through an interference fit.

10. The automotive air conditioning manifold assembly according to claim 9, characterized in that, The clamping unit includes a U-shaped block installed at the bottom of the clamping block, with the opening of the U-shaped block facing downwards; A screw is threaded onto the U-shaped block, and the screw moves axially along the U-shaped block by rotation.

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