Novel rotary compressor

Abstract

The utility model provides a novel rotary compressor, which relates to the technical field of rotary compressors and comprises a circular truncated cone type rotor, a stator and a pumping structure. The distance between the outer diameter of the top end of the circular-truncated-cone-shaped rotor and the inner diameter of the top end of the stator is larger than that between the outer diameter of the bottom end of the circular-truncated-cone-shaped rotor and the inner diameter of the bottom end of the stator; the pumping structure comprises an eccentric shaft and an upper support shaft neck; the circular-truncated-cone-shaped rotor is located above the pumping structure, and the inner diameter of the circular-truncated-cone-shaped rotor is sleeved on the outer diameter of an eccentric shaft of the pumping structure. The rotor structure and the pumping structure of the compressor are improved, so that the performance of the compressor is improved, and the reworking of the later process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary compressor technical field, especially a novel rotary compressor. BACKGROUND

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] As Figure 4 The existing rotary compressor is composed of a top cover combination, a rotor, a stator, a shell, a pump combination, a bottom cover and a foot stand and other components. The assembly process is as follows: first, the counterweight is riveted on the rotor rivet column, and the rotor is heated. The rotor inner diameter is sleeved on the outer diameter of the pump eccentric shaft by using the principle of thermal expansion and cold contraction, the stator is hot-fitted in the inner diameter of the shell, and the rotor-pump combination is fixed at an angle position by using the copper-plated inner tube, and is welded and installed in the compressor by a three-point welding process. Then, the compressor top cover, bottom cover, foot stand and other components are welded. During the assembly process, if the gap between the rotor and the stator is poor, the rotor will run at high speed in the stator due to the influence of the motor magnetic field after the compressor is powered on. When the gap between the rotor and the stator is small, the eccentric shaft will be deflected due to factors such as center of gravity, torque and material quality. The rotor and the stator inner diameter are in contact, thereby generating abnormal noise, which seriously affects the quality of the compressor. To solve the abnormal noise of the finished compressor, the compressor top cover needs to be opened for rework, and the gap between the rotor and the stator needs to be adjusted to improve the condition of the compressor abnormal noise, which causes waste of materials and human resources. SUMMARY

[0004] To solve the above technical problems, the utility model provides a novel rotary compressor, which improves the performance of the compressor by improving the rotor structure and pump structure of the compressor, and avoids rework in the later process.

[0005] The technical scheme adopted by the utility model is as follows: a novel rotary compressor, comprising a circular truncated cone rotor, a stator and a pump structure; the distance between the top outer diameter of the circular truncated cone rotor and the top inner diameter of the stator is greater than the distance between the bottom outer diameter of the circular truncated cone rotor and the bottom inner diameter of the stator; the pump structure comprises an eccentric shaft and an upper support journal; the circular truncated cone rotor is located above the pump structure, and the inner diameter of the circular truncated cone rotor is sleeved on the outer diameter of the eccentric shaft of the pump structure.

[0006] Further, the distance between the top outer diameter of the circular truncated cone rotor and the top inner diameter of the stator is at least 0.47 mm; the height of the upper support journal is increased by 5-20 mm, and the root of the upper support journal is annularly reinforced.

[0007] Further, the long axis of the contact area between the upper support journal and the eccentric shaft is provided with a step difference, and the length of the step difference is 10-50 mm.

[0008] Further, the assembly structure comprises: a motor, a stator hot jacket and a rotor hot jacket.

[0009] Further, the non-wire end size of the motor is reduced by N, N is a shaping height reduction, and N ranges from 0 to 15 mm.

[0010] Further, the wire end B of the stator is increased by N, and B ranges from 0 to 15 mm.

[0011] Further, the stator hot jacket height C is reduced by N, and C ranges from 50 to 100 mm.

[0012] Further, the rotor hot jacket height D is reduced by N, and D ranges from 20 to 50 mm.

[0013] Further, the pump structure further comprises at least one oil channel for lubrication and cooling, and the oil channel penetrates the eccentric shaft and the upper support journal.

[0014] Further, the oil channel is arranged in a spiral shape.

[0015] The novel rotary compressor provided by the utility model has the following beneficial effects:

[0016] ①By optimizing the structure design of the rotor and the stator, the circular truncated cone rotor is used to replace the cylindrical rotor, so that the poor clearance between the rotor and the stator is effectively avoided, and the possibility of abnormal sound generated by the compressor during operation is reduced.

[0017] ②By increasing the height of the upper support journal and performing annular reinforcement, the stability and load-carrying capacity of the shaft are enhanced, and the operation efficiency and service life of the compressor are further improved. The stepped design makes the contact between the eccentric shaft and the upper support journal more uniform, which helps to disperse stress and reduce wear.

[0018] ③The optimization of the assembly structure, including the adjustment of the motor size and the rationalization of the stator and rotor hot jacket size, makes the overall assembly more compact, reduces the gravity center height of the compressor, improves the stability of operation, reduces vibration, and thus reduces the generation of abnormal sound.

[0019] ④The spiral design of the oil channel improves the lubrication and cooling effect, optimizes the oil flow path, and reduces energy loss. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification of this disclosure serve to provide further understanding of the disclosure, and the illustrative embodiments of the disclosure and the description thereof are used to explain the disclosure, and do not constitute an improper limitation on the disclosure.

[0021] Figure 1 The utility model discloses a novel rotary compressor structure sectional view;

[0022] Figure 2 For Figure 1 Enlarged sectional view of the circular truncated cone rotor structure at a;

[0023] Figure 3 For Figure 1 Enlarged sectional view of the pump structure at b;

[0024] Figure 4 For sectional view of the compressor structure in the prior art.

[0025] In the figure: 1, top cover combination; 2, circular truncated cone rotor; 3, stator; 4, shell; 5, eccentric shaft; 6, bottom cover; 7, foot; 8, root of upper support journal; 9, upper support journal; 10, contact area of eccentric shaft and upper support. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0027] Please refer to Figure 1 And Figure 3 The utility model provides a novel rotary compressor, it includes circular truncated cone rotor (2), stator (3) and pump structure, the distance between the top end outer diameter of circular truncated cone rotor (2) and the top end inner diameter of stator (3) is greater than the distance between the bottom end outer diameter of circular truncated cone rotor (2) and the bottom end inner diameter of stator (3), the pump structure includes eccentric shaft (5) and upper support journal (9), circular truncated cone rotor (2) is located above pump structure, and the inner diameter of circular truncated cone rotor (2) is sleeved on the outer diameter of eccentric shaft (5) of pump structure.

[0028] The structure of the rotor is adjusted from cylindrical to circular truncated cone by turning the outer diameter of the rotor, so that the distance between the top end outer diameter of the rotor and the inner diameter of the stator (3) is increased, and the contact probability is avoided.

[0029] The pump structure is optimized to limit the eccentric swing of the eccentric shaft (5). The height of the upper support journal is adjusted, and the root of the journal is strengthened. The eccentric swing of the eccentric shaft (5) is constrained by the height and the swing amplitude of the support. However, after increasing the height of the upper support journal, the contact friction area between the inside of the journal and the eccentric shaft (5) is increased, which will increase the power of the compressor unit, resulting in reduced market competitiveness. In order to avoid the increase of the power of the compressor, a step is added to the long shaft at the contact area of the eccentric shaft (5) and the upper support, so as to reduce the contact area and improve the power problem.

[0030] The distance between the top end outer diameter of the circular table type rotor (2) and the top end inner diameter of the stator (3) is at least 0.47 mm; the height of the upper support journal (9) is increased by 5-20 mm, and the root (8) of the upper support journal is annularly reinforced.

[0031] The long axis of the contact area (10) between the upper support journal and the eccentric shaft is provided with a step, and the length of the step is 10-50 mm.

[0032] The assembly structure further comprises a motor, a stator hot sleeve and a rotor hot sleeve.

[0033] The size of the non-wire end of the motor is reduced by N, N is the height of the shaping reduction, and the value range of N is 0-15 mm.

[0034] The size of the wire end B of the stator is increased by N, and the value range of B is 0-15 mm.

[0035] The size of the height C of the stator hot sleeve is reduced by N, and the value range of C is 50-100 mm.

[0036] The size of the height D of the rotor hot sleeve is reduced by N, and the value range of D is 20-50 mm.

[0037] The assembly structure is adjusted to reduce the height of the gravity center. The structure adjustment position is explained (A: original non-wire shaping height, B: wire end shaping height, C: stator hot sleeve height, D: rotor hot sleeve height, N: shaping reduction height). The size of the non-wire end of the motor is adjusted according to the process capability, and N (N

[0038] The pump structure further comprises at least one oil channel for lubrication and cooling, and the oil channel penetrates the eccentric shaft (5) and the upper support journal (9).

[0039] The arrangement of the oil channel is designed to be spiral.

[0040] The oil channel of the new rotary compressor is arranged in a spiral shape, which helps to improve the lubrication and cooling efficiency and effectively reduces the oil pressure loss inside the oil channel. The design of the spiral oil channel enables the lubricating oil to form a certain rotational power when passing through, thereby forming a more uniform oil film inside the compressor, reducing wear and tear, and prolonging the service life of the compressor.

[0041] In the description of the present application, the terms "connection", "installation", "fixation", "arrangement" and the like are understood in a broad sense, for example, "connection" can be fixed connection or indirectly through intermediate components without affecting the relationship between the components and the technical effects, or it can be integrated connection or partial connection, as the case may be for a person skilled in the art, the specific meaning of the above terms in the present application or utility model can be understood according to the specific circumstances.

[0042] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art within the technical range disclosed by the present application, according to the technical scheme and the utility model concept of the present application, equivalent replacement or change, should be covered within the protection scope of the present application.

Claims

1. A new rotary compressor, characterized in that: The application relates to a pump structure, which comprises a circular truncated cone rotor, a stator and a pump structure; the distance between the top outer diameter of the circular truncated cone rotor and the top inner diameter of the stator is greater than the distance between the bottom outer diameter of the circular truncated cone rotor and the bottom inner diameter of the stator; the pump structure comprises an eccentric shaft and an upper support journal; the circular truncated cone rotor is located above the pump structure, and the inner diameter of the circular truncated cone rotor is sleeved on the outer diameter of the eccentric shaft of the pump structure.

2. The novel rotary compressor of claim 1, wherein The distance between the top outer diameter of the circular truncated cone rotor and the top inner diameter of the stator is at least 0.47 mm; the height of the upper support journal is increased by 5-20 mm, and the root of the upper support journal is annularly reinforced.

3. The novel rotary compressor of claim 2, wherein The long axis of the contact area between the upper support journal and the eccentric shaft is provided with a section difference, and the length of the section difference is 10-50 mm.

4. The novel rotary compressor of claim 1, wherein The application further relates to an assembling structure, which comprises a motor, a stator hot sleeve and a rotor hot sleeve.

5. The novel rotary compressor of claim 4, wherein The non-wire end size of the motor is reduced by N, N is the height of the shaping reduction, and the value range of N is 0-15 mm.

6. The novel rotary compressor of claim 4, wherein The size of the wire end B of the stator is increased by N, and the value range of B is 0-15 mm.

7. The novel rotary compressor of claim 4, wherein The size of the height C of the stator hot sleeve is reduced by N, and the value range of C is 50-100 mm.

8. The novel rotary compressor of claim 4, wherein The size of the height D of the rotor hot sleeve is reduced by N, and the value range of D is 20-50 mm.

9. The novel rotary compressor of claim 1, wherein The pump structure further comprises at least one oil channel for lubrication and cooling, and the oil channel penetrates the eccentric shaft and the upper support journal.

10. The novel rotary compressor of claim 9, wherein The arrangement of the oil channel is designed as a spiral shape.

Images