Automobile air conditioner evaporator pipeline assembly

Abstract

The utility model discloses an automobile air conditioner evaporator pipeline assembly which comprises a straight pipe section and a bent pipe section which are sequentially connected end to end. A sealing sleeve is connected between the straight pipe section and the bent pipe section and comprises a middle sleeve part and a threaded sleeve part, the middle sleeve part is in threaded connection with the straight pipe section and the bent pipe section through the threaded sleeve part, the end face of the threaded sleeve part is sleeved with a sealing ring, and the end of the straight pipe section and the end of the bent pipe section are each provided with an outer sealing part. And the outer sealing part is provided with a positioning groove corresponding to the sealing ring. The pipe joint is novel in structure and good in sealing performance, the damaged pipe section can be replaced independently, and maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive air-conditioning pipelines, and particularly relates to an automotive air-conditioning evaporator pipeline assembly. Background Art

[0002] An automotive air-conditioning system is a device that realizes refrigeration, heating, ventilation, and air purification of the air inside the vehicle compartment. It can provide a comfortable riding environment for passengers, reduce the fatigue intensity of the driver, and improve driving safety.

[0003] The existing automotive air-conditioning evaporator pipeline is made of a whole copper pipe bent. During the driving of the vehicle, the pipeline is easily affected by vibration. When a certain part of the pipeline is damaged, the whole pipeline needs to be replaced. The material price of the pipeline is relatively high, and the replacement cost is high. Summary of the Invention

[0004] The purpose of the utility model is to solve the above-mentioned technical problems existing in the prior art, and provide an automotive air-conditioning evaporator pipeline assembly, which has a novel structure, good sealing performance, and the damaged pipe section can be replaced separately, saving the maintenance cost.

[0005] In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

[0006] An automotive air-conditioning evaporator pipeline assembly includes: a straight pipe section and a bent pipe section, and the straight pipe section and the bent pipe section are connected end to end in sequence; characterized in that: a sealing sleeve is connected between the straight pipe section and the bent pipe section. The sealing sleeve includes an intermediate sleeve portion and a threaded sleeve portion. The intermediate sleeve portion is screwed to the straight pipe section and the bent pipe section through the threaded sleeve portion. A sealing ring is sleeved on the end face of the threaded sleeve portion. Outer sealing portions are provided at the ends of the straight pipe section and the bent pipe section, and positioning grooves corresponding to the sealing ring are provided on the outer sealing portions. This pipeline assembly has a novel structure, good sealing performance, and the damaged pipe section can be replaced separately, saving the maintenance cost.

[0007] Further, a limiting rod is provided between adjacent intermediate sleeve portions. The limiting rod can limit the relative movement between adjacent two sealing sleeves, thereby limiting the relative movement between adjacent two straight pipe sections, and can also resist the free deformation of the bent pipe section, and is not easily affected by the vibration during the driving of the vehicle, improving the structural stability of the pipeline assembly.

[0008] Further, the limiting rod is fixedly welded to the intermediate sleeve portion through a welding portion, ensuring the connection strength between the limiting rod and the two intermediate sleeve portions, supporting and giving support to each other.

[0009] Furthermore, a limiting groove corresponding to the sealing ring is provided on the end face of the threaded sleeve portion. The sum of the depth of the limiting groove and the depth of the positioning groove is equal to the thickness of the sealing ring. The sealing ring is detachable and replaceable, and can be used immediately after installation. The sealing ring is embedded into the limiting groove, and the inner wall of the limiting groove is in close contact with the sealing ring, with a large frictional force and not easily falling off freely, ensuring high installation stability.

[0010] Furthermore, the outer sealing portion is fixedly welded to the straight pipe section and the bent pipe section, improving the connection strength between the outer sealing portion and the straight pipe section and the bent pipe section. The connection part is not easily cracked, ensuring the sealing performance.

[0011] Furthermore, galvanized layers are coated on the inner walls of the straight pipe section and the bent pipe section, improving the corrosion resistance. The inner walls of the straight pipe section and the bent pipe section are not easily corroded and rusted, with a long service life.

[0012] Due to the adoption of the above technical solutions, the present utility model has the following beneficial effects:

[0013] 1. Rotate the two threaded sleeve portions outwards. One threaded sleeve portion is screwed to the straight pipe section, and the sealing ring on this threaded sleeve portion is embedded into the positioning groove on the outer sealing portion of the straight pipe section. The other threaded sleeve portion is screwed to the bent pipe section, and the sealing ring on this threaded sleeve portion is embedded into the positioning groove on the outer sealing portion of the bent pipe section. This extends the sealing path, making the sealing path change from straight to curved, with good sealing performance. It effectively blocks the refrigerant from leaking out through the gaps between the straight pipe section and the sealing sleeve and between the bent pipe section and the sealing sleeve. The docking is simple, the disassembly is convenient, and the damaged pipe can be replaced separately, saving the maintenance cost.

[0014] 2. The limiting rod can restrict the relative movement between adjacent two sealing sleeves, thereby restricting the relative movement between adjacent two straight pipe sections. It can also resist the free deformation of the bent pipe section and is not easily affected by the vibration during the driving of the vehicle, improving the structural stability of the pipeline assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model with reference to the accompanying drawings:

[0016] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the straight pipe section in Embodiment 1;

[0018] Figure 3 is a schematic structural diagram of the bent pipe section in Embodiment 1;

[0019] Figure 4 is a schematic structural diagram of the sealing sleeve in Embodiment 1;

[0020] Figure 5This is a schematic diagram of the structure of the sealing sleeve and the sealing ring connected to each other in the first embodiment;

[0021] Figure 6 This is a schematic structural diagram of the second embodiment of the present utility model.

[0022] In the figure: 1-straight pipe section; 2-bend pipe section; 3-sealing sleeve; 4-middle sleeve; 5-threaded sleeve; 6-sealing ring; 7-external sealing part; 8-positioning groove; 9-limiting groove; 10-limiting rod; 11-welding part. DETAILED DESCRIPTION

[0023] like Figures 1 to 5 As shown, this is an embodiment of the present utility model

[0024] A car air-conditioning evaporator pipeline assembly comprises: a straight pipe section 1 and a curved pipe section 2, wherein the straight pipe section 1 and the curved pipe section 2 are connected end to end in sequence, and the inner walls of the straight pipe section 1 and the inner walls of the curved pipe section 2 are coated with a galvanized layer, thereby improving the corrosion resistance. The inner walls of the straight pipe section 1 and the inner walls of the curved pipe section 2 are not easy to corrode and rust, and have a long service life.

[0025] A sealing sleeve 3 is connected between the straight pipe section 1 and the curved pipe section 2. The sealing sleeve 3 includes an intermediate sleeve portion 4 and a threaded sleeve portion 5. The intermediate sleeve portion 4 is threadedly connected to the straight pipe section 1 and the curved pipe section 2 through the threaded sleeve portion 5. A sealing ring 6 is sleeved on the end surface of the threaded sleeve portion 5. The ends of the straight pipe section 1 and the curved pipe section 2 are both provided with external sealing portions 7, and the external sealing portions 7 are provided with positioning grooves 8 corresponding to the sealing ring 6.

[0026] The two threaded sleeves 5 are rotated outward, and one threaded sleeve 5 is threadedly connected to the straight pipe section 1, so that the sealing ring 6 on the threaded sleeve 5 is embedded in the positioning groove 8 on the outer sealing part 7 of the straight pipe section 1, and the other threaded sleeve 5 is threadedly connected to the curved pipe section 2, so that the sealing ring 6 on the threaded sleeve 5 is embedded in the positioning groove 8 on the outer sealing part 7 of the curved pipe section 2, thereby extending the sealing path, and the sealing path is curved from straight, with good sealing performance, effectively preventing the refrigerant from leaking out from the gap between the straight pipe section 1 and the sealing sleeve 3, and the gap between the curved pipe section 2 and the sealing sleeve 3. The docking is simple, the disassembly is convenient, and the damaged pipes can be replaced separately, saving maintenance costs.

[0027] The end surface of the threaded sleeve 5 is provided with a limiting groove 9 corresponding to the sealing ring 6, and the sum of the depth of the limiting groove 9 and the depth of the positioning groove 8 is equal to the thickness of the sealing ring 6. The sealing ring 6 can be detached and replaced, and can be used as needed. The sealing ring 6 is embedded in the limiting groove 9, and the sealing ring 6 is in close contact with the inner wall of the limiting groove 9, with great friction, and is not easy to fall out freely, and has high installation stability.

[0028] The outer sealing part 7 is fixedly welded to the straight pipe section 1 and the elbow pipe section 2, which improves the connection strength between the outer sealing part 7 and the straight pipe section 1 and the elbow pipe section 2. The connection part is not easy to crack, ensuring the sealing performance.

[0029] As Figure 6 shown, it is the second embodiment of the present invention

[0030] Based on the technical solution of the first embodiment, a limiting rod 10 is provided between adjacent intermediate sleeve parts 4. The limiting rod 10 can limit the relative movement between adjacent two sealing sleeves 3, and further limit the relative movement between adjacent two straight pipe sections 1. It can also resist the free deformation of the elbow pipe section 2 and is not easily affected by the vibration during the driving of the vehicle, improving the structural stability of the pipeline assembly.

[0031] The limiting rod 10 is fixedly welded to the intermediate sleeve part 4 through the welding part 11, ensuring the connection strength between the limiting rod 10 and the two intermediate sleeve parts 4, supporting and giving support to each other.

[0032] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. An automobile air-conditioning evaporator pipeline assembly, comprising: A straight pipe section and a curved pipe section, wherein the straight pipe section and the curved pipe section are connected end to end in sequence; Features: A sealing sleeve is connected between the straight pipe section and the curved pipe section, and the sealing sleeve includes an intermediate sleeve portion and a threaded sleeve portion. The intermediate sleeve portion is threadedly connected to the straight pipe section and the curved pipe section through the threaded sleeve portion. A sealing ring is sleeved on the end surface of the threaded sleeve portion. The ends of the straight pipe section and the curved pipe section are both provided with external sealing portions, and the external sealing portions are provided with positioning grooves corresponding to the sealing rings.

2. The automobile air-conditioning evaporator pipeline assembly according to claim 1, characterized in that: A limiting rod is arranged between adjacent intermediate sleeve parts.

3. The automobile air-conditioning evaporator pipeline assembly according to claim 2 is characterized in that: The limiting rod is welded and fixed to the middle sleeve portion through a welding portion.

4. The automobile air-conditioning evaporator pipeline assembly according to claim 1 is characterized in that: A limiting groove corresponding to the sealing ring is provided on the end surface of the threaded sleeve, and the sum of the depth of the limiting groove and the depth of the positioning groove is equal to the thickness of the sealing ring.

5. The automobile air-conditioning evaporator pipeline assembly according to claim 1 is characterized in that: The outer sealing portion is fixed to the straight pipe section and the curved pipe section by welding.

6. The automobile air-conditioning evaporator pipeline assembly according to claim 1, characterized in that: The inner wall of the straight pipe section and the inner wall of the curved pipe section are both coated with a galvanized layer.

Images