Intake pipe assembly, twin-rotor compressor system, air conditioner

Abstract

The present invention provides an air intake pipe assembly, a dual-rotor compressor system, and an air conditioner, wherein the air intake pipe assembly includes an air intake main pipe, a first air intake branch pipe, and a second air intake branch pipe. The air intake main pipe is connected to the first air intake branch pipe and the second air intake branch pipe through a diverter. The first air intake branch pipe and / or the second air intake branch pipe are hard pipes, and the first air intake branch pipe includes a plurality of first U-shaped bending structures. According to the present invention, the steel woven hose used in the prior art is replaced by a hard pipe, and the total length of the pipeline is increased by setting a plurality of first U-shaped bending structures on the first air intake branch pipe. According to Hooke's law, the longer the pipeline length, the smaller the rigidity and the greater the flexibility, so that the technical solution of the present invention has the advantages of low cost and small strain.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor manufacturing, and in particular relates to an air intake pipe assembly, a dual-rotor compressor system, and an air conditioner. Background Art

[0002] In the early stage of prototype development, the two-compressor model in parallel faced the problem that pipeline vibration repeatedly failed to meet the relevant vibration requirements. In the mode of turning on one compressor, the pipeline stress basically met the relevant vibration requirements, with only a few frequency bands exceeding the standard. However, in the mode of turning on two compressors, large-area pipeline strain exceeded the standard in the low, medium and high operating frequency bands of the compressor, especially in the suction pipeline. The emergence of this phenomenon is quite different from the previous understanding of the pipeline vibration characteristics of a single compressor system. In response to the above-mentioned phenomenon, one solution in the prior art is to install a steel woven hose at the air intake port. However, the use of a steel woven hose will increase production costs and process complexity, and the use of a steel woven hose on a compressor has the risk of leakage and failure at the root of the hose due to the swing of the compressor during road transportation. Another solution in the prior art is to use a parallel twin scroll compressor system for the parallel rotor compressors. This solution utilizes the characteristic that the scroll compressor vibrates less than the rotor compressor, thereby achieving pipeline vibration reduction, thereby reducing the stress and strain of the pipeline so that its size meets the requirements of the company and the industry. However, the problem with this solution is that the production cost of the scroll compressor is relatively high.

[0003] Especially when the compressor system is a variable frequency model, optimizing the natural frequency of a certain section of the suction pipeline corresponding to one of the compressors cannot completely solve the problem of excessive stress over a large area in the parallel pipeline system. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide an intake pipe assembly, a dual-rotor compressor system, and an air conditioner to overcome the disadvantage of large pipeline strain of the intake pipe assembly of the dual-rotor compressor system in the prior art.

[0005] In order to solve the above problems, the present invention provides an intake pipe assembly, including an intake main pipe, a first intake branch pipe, and a second intake branch pipe. The intake main pipe is connected to the first intake branch pipe and the second intake branch pipe through a diverter. The first intake branch pipe and / or the second intake branch pipe are hard pipes, and the first intake branch pipe includes multiple first U-shaped bending structures.

[0006] Preferably, the first U-shaped bending structure includes a first U-bend, and the first U-bend includes a first straight pipe segment, a second straight pipe segment, and a third straight pipe segment, wherein the first straight pipe segment is parallel to the third straight pipe segment, a right angle is formed between the first straight pipe segment and the second straight pipe segment, a right angle is formed between the second straight pipe segment and the third straight pipe segment, and there is an arc transition between the first straight pipe segment and the second straight pipe segment, and there is an arc transition between the second straight pipe segment and the third straight pipe segment.

[0007] Preferably, the first U-shaped bending structure also includes a second U-bend, the second U-bend includes the third straight pipe segment, the fourth straight pipe segment, and the fifth straight pipe segment, the second U-bend is opposite to the opening direction of the first U-bend, and the third straight pipe segment is parallel to the fifth straight pipe segment.

[0008] Preferably, the first U-shaped bending structure also includes a third U-bend, and the third U-bend includes the fifth straight pipe segment, the first arc pipe segment, and the sixth straight pipe segment. The opening direction of the third U-bend is the same as that of the first U-bend, and the fifth straight pipe segment is parallel to the sixth straight pipe segment.

[0009] Preferably, a first pipe clamp is connected between the third straight pipe section and the fifth straight pipe section; and / or a second pipe clamp is connected between the fifth straight pipe section and the sixth straight pipe section.

[0010] Preferably, a mounting hole is configured on the first pipe clamp, and the mounting hole is used to fit a liquid storage tank, and the inlet of the liquid storage tank is connected to the outlet of the sixth straight pipe segment; and / or the second straight pipe segment is skewed and parallel to the fourth straight pipe segment, and when projected onto any radial plane of the third straight pipe segment, a first angle A is formed between the second straight pipe segment and the fourth straight pipe segment, and the angle is 90°≤A≤150°.

[0011] Preferably, a hose section is provided in the first air suction branch pipe and / or the second air suction branch pipe.

[0012] Preferably, the second air intake branch pipe includes a plurality of second U-shaped bending structures; and / or the air intake main pipe includes a plurality of third U-shaped bending structures.

[0013] Preferably, the second U-shaped bending structure includes a fourth U-bend, the fourth U-bend includes a seventh straight pipe segment, a second arc pipe segment, and an eighth straight pipe segment, the seventh straight pipe segment is parallel to the eighth straight pipe segment, and the opening direction of the fourth U-bend is the same as that of the first U-bend; and / or, the third U-shaped bending structure includes a fifth U-bend, the fifth U-bend includes a ninth straight pipe segment, a tenth straight pipe segment, and an eleventh straight pipe segment, the ninth straight pipe segment is parallel to the eleventh straight pipe segment, and the opening direction of the fifth U-bend is opposite to that of the first U-bend.

[0014] Preferably, a third pipe clamp is connected between the seventh straight pipe segment and the eighth straight pipe segment; and / or a fourth pipe clamp is connected to the tenth straight pipe segment.

[0015] Preferably, the fourth pipe clamp is connected to an external fixed carrier through a fixed bracket; and / or the eighth straight pipe segment is connected to the diverter through the twelfth straight pipe segment and the thirteenth straight pipe segment, and projected on any radial plane of the eighth straight pipe segment, a second angle B is formed between the twelfth straight pipe segment and the second circular arc pipe segment, 90°≤B≤150°.

[0016] Preferably, a fifth pipe clamp is connected to the twelfth straight pipe segment.

[0017] The present invention also provides a dual-rotor compressor system, comprising an intake pipe assembly, wherein the intake pipe assembly is the intake pipe assembly mentioned above.

[0018] Preferably, when the air intake pipe assembly includes a first pipe clamp and a mounting hole is configured on the first pipe clamp, a liquid storage tank is fixedly connected in the mounting hole, and a vibration isolation layer is provided between an outer shell of the liquid storage tank and the mounting hole.

[0019] The present invention also provides an air conditioner, comprising the above-mentioned dual-rotor compressor system.

[0020] The present invention provides an intake pipe assembly, a dual-rotor compressor system, and an air conditioner. A hard pipe is used to replace the steel woven hose used in the prior art. At the same time, a plurality of first U-shaped bending structures are arranged on the first intake branch pipe to increase the total length of the pipeline. According to Hooke's law, the longer the pipeline length, the smaller the rigidity and the greater the flexibility. Therefore, the technical solution of the present invention has the advantages of low cost and small strain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an air intake pipe assembly according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 It is a schematic structural diagram of an air intake pipe assembly according to another embodiment of the present invention.

[0024] The reference numerals are:

[0025] 21. The first straight pipe section; 22. The second straight pipe section; 23. The third straight pipe section; 24. The fourth straight pipe section; 25. The fifth straight pipe section; 26. The first arc pipe section; 27. The sixth straight pipe section; 28. The seventh straight pipe section; 29. ​​The second arc pipe section; 30. The eighth straight pipe section; 31. The ninth straight pipe section; 32. The tenth straight pipe section; 33. The eleventh straight pipe section; 34. The twelfth straight pipe section; 35. The thirteenth straight pipe section; 4. The flow divider; 51. The first pipe clamp; 511. The mounting hole; 52. The second pipe clamp; 53. The third pipe clamp; 54. The fourth pipe clamp; 55. The fixing bracket; 56. The fifth pipe clamp; 6. The hose section; 100. The liquid storage tank. DETAILED DESCRIPTION

[0026] See also Figures 1 to 3 As shown, according to an embodiment of the present invention, there is provided an air intake pipe assembly, including an air intake main pipe, a first air intake branch pipe, and a second air intake branch pipe. The air intake main pipe is connected to the first air intake branch pipe and the second air intake branch pipe through a diverter 4. The first air intake branch pipe and / or the second air intake branch pipe are hard pipes, and the first air intake branch pipe includes a plurality of first U-shaped bending structures. In this technical solution, the steel woven hose used in the prior art is replaced by a hard pipe, and the total length of the pipeline is increased by setting a plurality of first U-shaped bending structures on the first air intake branch pipe. According to Hooke's law, the longer the pipeline length, the smaller the rigidity and the greater the flexibility, so that the technical solution of the present invention has the advantages of low cost and small strain.

[0027] Specifically, the first U-shaped bending structure includes a first U-bend, and the first U-bend includes a first straight pipe section 21, a second straight pipe section 22, and a third straight pipe section 23, wherein the first straight pipe section 21 is parallel to the third straight pipe section 23, a right angle is formed between the first straight pipe section 21 and the second straight pipe section 22, a right angle is formed between the second straight pipe section 22 and the third straight pipe section 23, and an arc transition is formed between the first straight pipe section 21 and the second straight pipe section 22, and an arc transition is formed between the second straight pipe section 22 and the third straight pipe section 23. The use of an arc transition can prevent stress concentration between two adjacent straight pipe sections when bending, and the design of the first U-bend can improve the flexibility of the first air intake branch.

[0028] Further, the first U-shaped bending structure also includes a second U-bend, the second U-bend includes the third straight pipe section 23, the fourth straight pipe section 24, and the fifth straight pipe section 25, the second U-bend is opposite to the opening direction of the first U-bend, and the third straight pipe section 23 is parallel to the fifth straight pipe section 25. Further, the first U-shaped bending structure also includes a third U-bend, the third U-bend includes the fifth straight pipe section 25, the first arc pipe section 26, and the sixth straight pipe section 27, the third U-bend has the same opening direction as the first U-bend, and the fifth straight pipe section 25 is parallel to the sixth straight pipe section 27. The design of the first U-bend, the second U-bend, and the third U-bend jointly improves the flexibility of the first air intake branch pipe, and it can be understood that since the first air intake branch pipe is a hard pipe, its flexibility will not significantly reduce the rigidity of the first air intake branch pipe, and the improvement of flexibility is obviously conducive to reducing the strain of the first air intake branch pipe.

[0029] In some embodiments, a first pipe clamp 51 is connected between the third straight pipe segment 23 and the fifth straight pipe segment 25; and / or a second pipe clamp 52 is connected between the fifth straight pipe segment 25 and the sixth straight pipe segment 27. The first pipe clamp 51 and the second pipe clamp 52 can constrain the strain of the second U-bend and the third U-bend, thereby further reducing the deformation at the second U-bend or the third U-bend.

[0030] Furthermore, a mounting hole 511 is configured on the first pipe clamp 51, and the mounting hole 511 is used to mount the liquid storage tank 100, and the inlet of the liquid storage tank 100 is connected to the outlet of the sixth straight pipe section 27. At this time, the first pipe clamp 51 enables the liquid storage tank 100 to form a whole with the first air intake branch pipe, thereby effectively reducing the deformation of the associated pipelines; and / or, the second straight pipe section 22 and the fourth straight pipe section 24 are not parallel to each other, and when projected on any radial plane of the third straight pipe section 23, a first angle A is formed between the second straight pipe section 22 and the fourth straight pipe section 24, 90°≤A≤150°, preferably, A=125°. Preferably, a hose section 6 is provided in the first suction branch pipe and / or the second suction branch pipe, thereby increasing the flexibility of the first suction branch pipe or the second suction branch pipe at a certain position, which is beneficial to compensate for the displacement of the first suction branch pipe or the second suction branch pipe. For example, when the liquid storage tank 100 is assembled in the mounting hole 511, the hose section 6 can be arranged at a position adjacent to the air outlet at the end of the first suction branch pipe, so that the end of the first suction branch pipe can be connected to the liquid storage tank 100 more conveniently.

[0031] Similar to the design of the first air intake branch pipe, the second air intake branch pipe includes a plurality of second U-shaped bending structures; and / or the air intake main pipe includes a plurality of third U-shaped bending structures, thereby also being able to reduce the deformation of the corresponding pipeline through the corresponding bending structure.

[0032] Specifically, the second U-shaped bending structure includes a fourth U-bend, the fourth U-bend includes a seventh straight pipe section 28, a second arc pipe section 29, and an eighth straight pipe section 30, the seventh straight pipe section 28 is parallel to the eighth straight pipe section 30, and the fourth U-bend has the same opening direction as the first U-bend; and / or, the third U-shaped bending structure includes a fifth U-bend, the fifth U-bend includes a ninth straight pipe section 31, a tenth straight pipe section 32, and an eleventh straight pipe section 33, the ninth straight pipe section 31 is parallel to the eleventh straight pipe section 33, and the fifth U-bend has an opening direction opposite to that of the first U-bend. At this time, a third pipe clamp 53 is connected between the seventh straight pipe section 28 and the eighth straight pipe section 30; and / or, a fourth pipe clamp 54 is connected to the tenth straight pipe section 32, so that the corresponding pipeline can be constrained by the design of the third pipe clamp 53 and the fourth pipe clamp 54, thereby further reducing the deformation of the pipeline.

[0033] The fourth pipe clamp 54 is connected to an external fixed carrier (e.g., a bottom plate) through a fixed bracket 55. The fixed bracket 55 can be formed by bending a sheet metal, for example, and can effectively constrain the air intake manifold through the fourth pipe clamp 54; and / or, the eighth straight pipe section 30 is connected to the diverter 4 through the twelfth straight pipe section 34 and the thirteenth straight pipe section 35. When projected on any radial plane of the eighth straight pipe section 30, a second angle B is formed between the twelfth straight pipe section 34 and the second arc pipe section 29, 90°≤B≤150°, preferably, B=110°. Further, the twelfth straight pipe section 34 is connected to a fifth pipe clamp 56. As a more preferred embodiment, the first pipe clamp 51, the second pipe clamp 52, the third pipe clamp 53, the fourth pipe clamp 54 and / or the fifth pipe clamp 56 are made of rubber, so as to ensure that they have a certain flexibility.

[0034] In order to verify the effectiveness of the technical solution of the present invention in reducing the suction strain, the inventors simulated the parallel twin-rotor compressor system adopting the technical solution of the present invention. The results showed that after adopting the design solution of the present invention, the modal vibration type of the original suction manifold was 59.7Hz, and the modal vibration type of the suction manifold of the present invention was 46.3Hz. Compared with the original suction pipe assembly, the pipeline vibration stress on the suction pipe assembly of the present invention was greatly improved.

[0035] According to an embodiment of the present invention, there is also provided a dual-rotor compressor system, including an intake pipe assembly, wherein the intake pipe assembly is the above-mentioned intake pipe assembly. When the intake pipe assembly includes a first pipe clamp 51 and a mounting hole 511 is configured on the first pipe clamp 51, a liquid storage tank 100 is fixedly connected in the mounting hole 511, and a vibration isolation layer is provided between the outer shell of the liquid storage tank 100 and the mounting hole 511, and the vibration isolation layer may be, for example, glue, sound insulation cotton, etc. Specifically, the vibration isolation layer may be wrapped around the outer peripheral wall of the liquid storage tank 100, which can reduce the tangential vibration of the liquid storage tank, thereby reducing the vibration and stress of the intake pipe.

[0036] According to an embodiment of the present invention, there is also provided an air conditioner, comprising the above-mentioned dual-rotor compressor system.

[0037] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An air intake pipe assembly, characterized in that: The invention comprises an air intake main pipe, a first air intake branch pipe, and a second air intake branch pipe, wherein the air intake main pipe is connected to the first air intake branch pipe and the second air intake branch pipe through a flow divider (4), the first air intake branch pipe and / or the second air intake branch pipe are hard pipes, and the first air intake branch pipe comprises a plurality of first U-shaped bending structures; the first U-shaped bending structure comprises a first U-bend, the first U-bend comprises a first straight pipe section (21), a second straight pipe section (22), and a third straight pipe section (23), wherein the first straight pipe section (21) is parallel to the third straight pipe section (23), and the first straight pipe section (21) is parallel to the second straight pipe section (23). The first straight pipe section (21) and the second straight pipe section (22) form a right angle, the second straight pipe section (22) and the third straight pipe section (23) form a right angle, and the first straight pipe section (21) and the second straight pipe section (22) form a circular arc transition, and the second straight pipe section (22) and the third straight pipe section (23) form a circular arc transition, the first U-shaped bending structure also includes a second U-bend, the second U-bend includes the third straight pipe section (23), the fourth straight pipe section (24), and the fifth straight pipe section (25), the second U-bend and the first U-bend have opening directions opposite to each other, and the third straight pipe section (23) and the fifth straight pipe section (25) are connected to each other in a circular arc transition. The first U-shaped bending structure further comprises a third U-bend, the third U-bend comprising the fifth straight pipe segment (25), the first arc pipe segment (26), and the sixth straight pipe segment (27), the third U-bend and the first U-bend have the same opening direction and the fifth straight pipe segment (25) is parallel to the sixth straight pipe segment (27), the outlet of the sixth straight pipe segment (27) is connected to the inlet of the liquid storage tank, a second pipe clamp (52) is connected between the fifth straight pipe segment (25) and the sixth straight pipe segment (27), the second straight pipe segment (22) and the fourth straight pipe segment (27) are connected to each other. 4) being skew-parallel, projected onto any radial plane of the third straight pipe segment (23), a first angle A is formed between the second straight pipe segment (22) and the fourth straight pipe segment (24), 90°≤A≤150°; the second air intake branch pipe comprises a plurality of second U-shaped bending structures, the second U-shaped bending structures comprise a fourth U-bend, the fourth U-bend comprises a seventh straight pipe segment (28), a second arc pipe segment (29), and an eighth straight pipe segment (30), the seventh straight pipe segment (28) is parallel to the eighth straight pipe segment (30), and the fourth U-bend has the same opening direction as the first U-bend;and, the air intake main pipe further comprises a third U-shaped bending structure, the third U-shaped bending structure comprises a fifth U-bend, the fifth U-bend comprises a ninth straight pipe section (31), a tenth straight pipe section (32), and an eleventh straight pipe section (33), the ninth straight pipe section (31) is parallel to the eleventh straight pipe section (33), and the opening direction of the fifth U-bend is opposite to that of the first U-bend, a third pipe clamp (53) is connected between the seventh straight pipe section (28) and the eighth straight pipe section (30), the eighth straight pipe section (30) is connected to the flow divider (4) through the twelfth straight pipe section (34) and the thirteenth straight pipe section (35), and when projected onto any radial plane of the eighth straight pipe section (30), a second angle B is formed between the twelfth straight pipe section (34) and the second arc pipe section (29), and 90°≤B≤150°. ; 2. The air intake duct assembly according to claim 1, characterized in that: A first pipe clamp (51) is connected between the third straight pipe section (23) and the fifth straight pipe section (25).

3. The air intake duct assembly according to claim 2, characterized in that: The first pipe clamp (51) is provided with a mounting hole (511), the mounting hole (511) being used to fit a liquid storage tank (100), the inlet of the liquid storage tank (100) being in communication with the outlet of the sixth straight pipe section (27).

4. The air intake duct assembly according to claim 1, characterized in that: A hose section (6) is provided in the first air intake branch pipe and / or the second air intake branch pipe.

5. The air intake duct assembly according to claim 1, characterized in that: The air intake manifold includes a plurality of third U-shaped bending structures.

6. The air intake duct assembly according to claim 1, characterized in that: A fourth pipe clamp (54) is connected to the tenth straight pipe section (32).

7. The air intake duct assembly according to claim 6, characterized in that: The fourth pipe clamp (54) is connected to an external fixing carrier via a fixing bracket (55).

8. The air intake duct assembly according to claim 7, characterized in that: The twelfth straight pipe section (34) is connected to a fifth pipe clamp (56).

9. A twin-rotor compressor system, comprising a suction pipe assembly, characterized in that: The air intake duct assembly is the air intake duct assembly according to any one of claims 1 to 8.

10. The twin-rotor compressor system according to claim 9, characterized in that: When the air intake pipe assembly comprises a first pipe clamp (51) and a mounting hole (511) is configured on the first pipe clamp (51), a liquid storage tank (100) is fixedly connected in the mounting hole (511), and a vibration isolation layer is provided between an outer shell of the liquid storage tank (100) and the mounting hole (511).

11. An air conditioner comprising a dual-rotor compressor system, characterized in that: The twin-rotor compressor system is the twin-rotor compressor system according to claim 9 or 10.

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