Anti-slip compressor

Abstract

A compressor that prevents movement includes a first annular magnet, a second annular magnet, a pump assembly, a motor, a housing and a rolling bearing. The motor is arranged in the housing, the output end of the motor is connected to the pump assembly, the end of the pump assembly is connected to the rolling bearing, and the rolling bearing is connected to the housing; the first annular magnet abuts against the rolling bearing or the inner wall of the housing, the second annular magnet abuts against the pump assembly or the motor, and the first annular magnet and the second annular magnet are installed in a mutually exclusive manner. Two mutually exclusive annular magnets are sleeved on the crankshaft, one end of one annular magnet abuts against the inner ring of the rolling bearing, and the other annular magnet abuts against the crankshaft or the motor rotor, and the two mutually exclusive annular magnets apply a force toward the auxiliary bearing to the crankshaft. According to the horizontal rotary compressor of the present invention, the end face of the auxiliary bearing and the thrust face of the crankshaft can be effectively matched to resist the axial movement of the compressor when it is in a stopped state.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to an anti-slip compressor. Background Art

[0002] There is a significant design flaw in vehicle-mounted horizontal compressors, namely, the lack of effective measures to limit the axial movement of the compressor motor rotor and shaft when the power is off. This defect causes the motor rotor to still drive the crankshaft to vibrate randomly in the axial direction after the compressor is powered off. This vibration not only produces unpleasant noises, but may also damage the internal structure of the compressor, seriously affecting the reliability and long-term performance of the compressor.

[0003] In addition, this axial movement and random vibration also greatly damage the customer experience, which greatly reduces the user's trust and satisfaction with the compressor during use. Customers may question the performance of the compressor due to abnormal noise and potential failures, which in turn affects the product's market competitiveness and user reputation.

[0004] At the same time, there is also the problem of height difference between the stator and the rotor in vehicle-mounted horizontal compressors. The existence of this height difference greatly reduces the effective use height of the rotor, and it is unable to fully exert its due working efficiency. This not only leads to a decrease in motor efficiency, but also makes the compressor output power relatively low under the condition of the same input power, thereby increasing the power consumption of the compressor. This increase in power consumption not only wastes energy, but may also have an adverse effect on the overall energy consumption of the vehicle-mounted system, further reducing the economy and environmental protection of the product. Summary of the invention

[0005] The object of the present invention is to provide an anti-slip compressor to solve the above-mentioned problem.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A compressor to prevent movement includes a first annular magnet, a second annular magnet, a pump assembly, a motor, a housing and a rolling bearing. The motor is arranged in the housing, the motor output end is connected to the pump assembly, the end of the pump assembly is connected to the rolling bearing, and the rolling bearing is connected to the housing; the first annular magnet abuts against the rolling bearing or the inner wall of the housing, the second annular magnet abuts against the pump assembly or the motor, and the first annular magnet and the second annular magnet are installed mutually exclusive.

[0007] Furthermore, the pump body assembly includes a main bearing, a secondary bearing, a rolling piston, a crankshaft and a cylinder. The main bearing and the secondary bearing are both arranged on the inner wall of the shell. The main bearing and the secondary bearing are respectively arranged on both sides of the cylinder, and the crankshaft passes through the cylinder and cooperates with the main bearing and the secondary bearing. The rolling piston sleeve is arranged on the crankshaft.

[0008] Furthermore, the second annular magnet abuts against the crankshaft step surface or the top end surface of the crankshaft end.

[0009] Furthermore, the motor includes a motor stator and a motor rotor. The motor stator is mounted on the inner wall of the housing, the motor rotor is arranged on the inner side of the motor stator, and the crankshaft is mounted on the rotor.

[0010] Furthermore, the second annular magnet can also abut against the end surface of the motor rotor.

[0011] Furthermore, the rolling bearing comprises a bearing outer ring and a bearing inner ring, and the first annular magnet abuts against the bearing inner ring.

[0012] Furthermore, the shell includes a low-pressure shell and a high-pressure shell, the low-pressure shell and the high-pressure shell are butted together to form a shell, and the first annular magnet abuts against the inner wall of the low-pressure shell.

[0013] Furthermore, the shell is divided into a low-pressure chamber and a high-pressure chamber, and the motor is arranged in the low-pressure chamber.

[0014] Furthermore, a compressor air inlet is provided on the low-pressure shell and communicated with the low-pressure chamber.

[0015] Furthermore, the pump body assembly is arranged in the high-pressure chamber, and the compressor exhaust port is arranged on the high-pressure housing and communicated with the high-pressure chamber.

[0016] Compared with the prior art, the present invention has the following technical effects: The present invention sets two mutually repelling annular magnets on the crankshaft and uses the magnetic force between them to apply a continuous force to the crankshaft toward the auxiliary bearing. This design can ensure that when the compressor is stopped, the end face of the auxiliary bearing and the thrust surface of the crankshaft are effectively matched, thereby effectively resisting the axial movement of the crankshaft and the motor rotor. This greatly improves the stability and reliability of the compressor and avoids abnormal noise and internal structure damage caused by axial movement.

[0017] The setting of rolling bearings further enhances the support stability of the crankshaft in the housing. The end of the crankshaft extending out of the rotor cooperates with the inner ring of the rolling bearing, so that the crankshaft can maintain a more stable state during operation, reducing vibration and noise. This design not only improves the operating quality of the compressor, but also extends its service life.

[0018] The main bearing and auxiliary bearing are respectively arranged on both sides of the cylinder assembly, and closely cooperate with the crankshaft to form a stable support structure. This design enables the crankshaft to distribute pressure more evenly when bearing various loads during the operation of the compressor, thereby improving the bearing capacity and wear resistance of the bearing.

[0019] The compressor structure design of the present invention is concise and clear, the matching relationship between the components is clear, and it is easy to install and disassemble. In particular, the use of annular magnets and rolling bearings not only effectively suppresses axial movement, but also simplifies the internal structure of the compressor, reducing manufacturing costs and maintenance difficulties.

[0020] In summary, the horizontal rotary compressor of the present invention effectively solves the axial movement problem of the compressor when it is stopped through ingenious magnetic design and stable bearing matching, improves the running stability and reliability of the compressor, optimizes the bearing capacity of the bearing, simplifies the structural design, and facilitates installation and maintenance. These technical effects make the compressor of the present invention have broad market prospects and application value in application fields such as vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The ring magnet is installed on the top end face of the compressor long shaft end Figure 2 The ring magnet is installed on the step surface of the compressor shaft Figure 3 The ring magnet is installed on the end face of the compressor motor rotor Figure 4 Installation direction of ring magnet poles DETAILED DESCRIPTION The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention provides an anti-slip compressor, comprising a housing 1, a motor composed of a motor stator 2-1 and a rotor 2-2 in the housing, a pump body assembly driven by the motor, and a rolling bearing at the end of the pump body assembly. The housing includes a low-pressure housing 1-1 and a high-pressure housing 1-2. The pump body assembly includes a main bearing 5, a secondary bearing 6, a rolling piston 7, a crankshaft 8 and a cylinder 9. The inner cavity of the housing is divided into a low-pressure chamber 10 and a high-pressure chamber 11, the motor is arranged in the low-pressure chamber, and the compressor air inlet 12 is arranged on the low-pressure housing and communicated with the low-pressure chamber; the working chamber 13 inside the pump body assembly is arranged in the high-pressure chamber, and the compressor exhaust port 14 is arranged on the high-pressure housing and communicated with the high-pressure chamber. The rolling bearing is arranged on the inner wall 15 of the low-pressure housing, the outer ring 4-1 of the rolling bearing is matched with the low-pressure housing, the end 16 of the crankshaft extending out of the motor rotor is matched with the inner ring 4-2 of the rolling bearing, one end of an annular magnet 17 is stopped on the inner ring, and the other annular magnet 18 is stopped on the crankshaft step surface 19 or the motor rotor end surface 20; or one annular magnet is stopped on the low-pressure housing 11, and the other annular magnet is stopped on the top end surface of the long shaft end. The two magnets are installed mutually repellingly to apply a force toward the auxiliary bearing to the crankshaft.

[0025] A pair of annular magnets with the same poles repel each other and are arranged on the inner ring of the rolling bearing and the end face of the motor rotor sleeved at the long axis end of the crankshaft. The two mutually repelling annular magnets apply a force toward the auxiliary bearing to the crankshaft; or a pair of magnets are arranged at the top position of the long axis end of the crankshaft in a mutually repelling manner, one of the magnets is fixed on the inner wall of the shell, and the other magnet is fixed on the top end face of the long axis end of the crankshaft.

[0026] Two mutually repelling annular magnets are sleeved on the crankshaft, one end of one annular magnet abuts against the inner ring, and the other annular magnet abuts against the crankshaft or the rotor, and the two mutually repelling annular magnets apply a force toward the auxiliary bearing to the crankshaft. According to the horizontal rotary compressor of the present invention, the end face of the auxiliary bearing and the thrust face of the crankshaft can be effectively matched to resist the axial movement of the compressor when it is stopped.

[0027] The compressor in this embodiment can be a vertical compressor or a horizontal compressor, and the compressor can be used in passenger cars, commercial vehicles, buses, rail transit, ships and other equipment equipped with air conditioners. The compressor can use refrigerants such as R744, R134a, R290, R410A, and R1234yf. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Example 1 like Figure 1 The device with magnetic structure is shown, in which one annular magnet is fixed on the inner wall of the shell, and the magnet and the inner wall of the shell are in a gap match, and the other magnet is fixed on the top end face of the long axis end of the crankshaft, and the magnet and the crankshaft are in a gap match. The installation of the same magnetic poles produces repulsion. The magnitude of the repulsive force is determined by the size of the magnet and the gap a between the two magnet poles. The repulsive force to be overcome depends on the moving force generated by the motor rotor and the shaft in the pump body assembly, which is generally determined by the rotor, shaft, friction coefficient, and magnetic pull between the rotor and the stator.

[0029] Example 2 like Figure 2 The device with magnetic structure is shown, in which one annular magnet is set on the inner ring of the rolling bearing, and the inner diameter of the magnet matches the shaft clearance, and the other annular magnet is stopped on the end step surface of the crankshaft extending from the motor rotor, and the inner diameter of the magnet matches the shaft clearance. The structure and principle are basically the same as those described in Example 1, except that the magnet installation position is different.

[0030] Example 3 like Figure 3 The device with magnetic structure is shown, in which one annular magnet is set on the inner ring of the rolling bearing, and the inner diameter of the magnet matches the shaft clearance, and the other annular magnet is stopped on the end face of the motor rotor, and the inner diameter of the magnet matches the shaft clearance. The structure and principle are basically the same as those described in Example 1, except that the magnet installation position is different.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-vibration compressor, characterized in that: The invention comprises a first annular magnet (17), a second annular magnet (18), a pump assembly, a motor, a housing and a rolling bearing, wherein the motor is arranged in the housing, the output end of the motor is connected to the pump assembly, the end of the pump assembly is connected to the rolling bearing, and the rolling bearing is connected to the housing; the first annular magnet (17) abuts against the rolling bearing or the inner wall of the housing, the second annular magnet (18) abuts against the pump assembly or the motor, and the first annular magnet (17) and the second annular magnet (18) are installed in a mutually exclusive manner.

2. The anti-slip compressor according to claim 1, characterized in that: The pump body assembly comprises a main bearing (5), a secondary bearing (6), a rolling piston (7), a crankshaft (8) and a cylinder (9). The main bearing (5) and the secondary bearing (6) are both arranged on the inner wall of the housing. The main bearing (5) and the secondary bearing (6) are respectively arranged on both sides of the cylinder (9). The crankshaft (8) passes through the cylinder (9) and is matched with the main bearing (5) and the secondary bearing (6). The rolling piston (7) is sleeved on the crankshaft (8).

3. The anti-vibration compressor according to claim 2, characterized in that: The second annular magnet (18) abuts against the crankshaft step surface or the top end surface of the crankshaft end.

4. The anti-slip compressor according to claim 2, characterized in that: The motor comprises a motor stator (2-1) and a motor rotor (2-2); the motor stator (2-1) is mounted on the inner wall of the housing; the motor rotor (2-2) is arranged on the inner side of the motor stator (21); and the crankshaft (8) is mounted on the rotor (2-2).

5. The anti-vibration compressor according to claim 4, characterized in that: The second annular magnet (18) can also abut against the end surface of the motor rotor.

6. The anti-vibration compressor according to claim 1, characterized in that: The rolling bearing comprises a bearing outer ring (4-1) and a bearing inner ring (4-2), and the first annular magnet (17) abuts against the bearing inner ring (4-2).

7. The anti-vibration compressor according to claim 1, characterized in that: The shell comprises a low-pressure shell (1-1) and a high-pressure shell (1-2). The low-pressure shell (1-1) and the high-pressure shell (1-2) are butted together to form a shell, and the first annular magnet (17) abuts against the inner wall of the low-pressure shell (1-1).

8. The anti-vibration compressor according to claim 7, characterized in that: The shell is divided into a low-pressure chamber (10) and a high-pressure chamber (11), and the motor is arranged in the low-pressure chamber.

9. The anti-slip compressor according to claim 8, characterized in that: The low-pressure housing (11) is provided with a compressor air inlet (12) which is in communication with the low-pressure chamber.

10. The anti-vibration compressor according to claim 8, characterized in that: The pump body assembly is arranged in the high-pressure chamber, and the compressor exhaust port (14) is arranged on the high-pressure housing (12) and communicates with the high-pressure chamber.

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