Compressor and air-conditioning unit

Abstract

The present invention provides a compressor and an air-conditioning unit. The compressor includes an intake end cover, the motor is arranged in the intake end cover, and the intake end cover is provided with an air inlet; a support member, the support member is arranged on the intake end cover, and the support member is located between the air inlet and the rotating shaft; a support bearing, the support bearing is arranged on the support member, and the part of the rotating shaft away from the compression assembly is arranged on the support bearing. The compressor and air-conditioning unit provided by the present invention are provided with a support member between the air inlet and the rotating shaft, and a flow hole is formed on the support member, that is, it is possible to support the rotating shaft, reduce the vibration or displacement of the rotating shaft during the operation of the compressor, and avoid the support member blocking the air inlet and affecting the air intake of the compressor, reduce the obstruction of the refrigerant flow of the compressor, and further improve the working efficiency of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compression equipment, in particular to a compressor and an air-conditioning unit. Background Art

[0002] In a refrigeration system, the compressor draws in gaseous refrigerant from the evaporator outlet, compresses it, and then transfers it to the condenser. Various types of compressors can be used in this refrigeration system, including positive displacement screw compressors.

[0003] The operating principle of a screw compressor is as follows: a semi-hermetic compressor houses a motor and a pair of compressor rotors. The motor rotor is mounted on the compressor's main rotor, forming a coaxial direct-drive structure. During operation, low-temperature refrigerant from the evaporator enters the compressor through the suction port, passes through the motor, and enters the compression chamber after cooling the motor.

[0004] The rotating shaft of the existing compressor extends to the air inlet, and a screw support frame, bearing support and other structures are set at the air inlet, which will cause more space to be occupied by the air inlet, reduce the air intake volume of the compressor, and cause low working efficiency of the compressor. Summary of the Invention

[0005] In order to solve the technical problem of low working efficiency caused by small air intake of the compressor, a compressor and an air conditioning unit are provided in which flow holes are formed on a support member to ensure the air intake.

[0006] A compressor includes a motor and a compression assembly, wherein the compression assembly is connected to a rotating shaft of the motor and comprises:

[0007] An air intake end cover, wherein the motor is arranged in the air intake end cover, and an air inlet is provided on the air intake end cover;

[0008] A support member, the support member is provided on the air intake end cover, and the support member is located between the air inlet and the rotating shaft;

[0009] a support bearing, the support bearing being disposed on the support member, and a portion of the rotating shaft away from the compression assembly being disposed on the support bearing;

[0010] A flow hole is formed on the support member, and the air inlet is connected to the compression assembly through the flow hole.

[0011] The support member includes at least two support ribs, one end of the support rib is arranged on the suction end cover, and the other end is connected to the support bearing, and the flow hole is formed between two adjacent support ribs.

[0012] The cross section of the supporting rib is triangular, and the vertex of the triangle faces the axis of the rotating shaft.

[0013] The vertex angle W of the triangle ranges from 15° to 90°.

[0014] The number of the support ribs ranges from 3 to 10, and all the support ribs are distributed in a ring shape with the axis of the rotating shaft as the axis.

[0015] On the plane where the support bearing is located, the ratio of the sum of the projected areas of all the support ribs to the projected area of the intake end cover is less than or equal to 0.4.

[0016] The motor includes a stator, which surrounds the outer side of the support bearing. The longitudinal section of the support rib is arc-shaped, and the opening of the arc faces the stator.

[0017] An inlet flow channel is provided in the air intake end cover, one end of the inlet flow channel is communicated with the air inlet, and the other end is communicated with the compression assembly.

[0018] The compression assembly includes a male rotor and a female rotor meshing with each other, and the male rotor is connected to the rotating shaft.

[0019] An air conditioning unit comprises the above-mentioned compressor.

[0020] The compressor and air-conditioning unit provided by the present invention are provided with a support member between the air inlet and the rotating shaft, and a flow hole is formed on the support member, which can support the rotating shaft and reduce the vibration or displacement of the rotating shaft during the operation of the compressor. It can also avoid the support member blocking the air inlet and affecting the air intake volume of the compressor, reduce the obstruction of the refrigerant flow of the compressor, and further improve the working efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A cross-sectional view of a compressor provided by an embodiment of the present invention;

[0022] Figure 2 A cross-sectional view of a support member provided for an embodiment of the invention;

[0023] In the picture:

[0024] 1. Motor; 2. Compression assembly; 11. Rotating shaft; 3. Intake end cover; 31. Air inlet; 4. Support member; 41. Flow hole; 5. Support bearing; 42. Support rib; 12. Stator;. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] like Figure 1 and Figure 2 The compressor shown includes a motor 1 and a compression assembly 2, and the compression assembly 2 is connected to the rotating shaft 11 of the motor 1, and includes: an intake end cover 3, the motor 1 is arranged in the intake end cover 3, and the intake end cover 3 is provided with an air inlet 31; a support member 4, the support member 4 is arranged on the intake end cover 3, and the support member 4 is located between the air inlet 31 and the rotating shaft 11; a support bearing 5, the support bearing 5 is arranged on the support member 4, and the part of the rotating shaft 11 away from the compression assembly 2 is arranged on the support bearing 5; an overflow hole is formed on the support member 4, and the air inlet 31 is connected to the compression assembly 2 through the overflow hole. A support member 4 is arranged between the air inlet 31 and the rotating shaft 11, and a flow hole 41 is formed on the support member 4, so that the rotating shaft 11 can be supported, which is equivalent to adding a support point for the rotating shaft 11 at a position far away from the compression component 2, thereby reducing the vibration or displacement of the rotating shaft 11 during the operation of the compressor, increasing the stability of the rotating shaft 11, and avoiding the support member 4 blocking the air inlet and affecting the air intake of the compressor, reducing the obstruction of the refrigerant flow of the compressor, and further improving the working efficiency of the compressor.

[0027] In one embodiment, the support member 4 includes at least two support ribs 42, one end of each of which is disposed on the intake end cover 3 and the other end is connected to the support bearing 5. The flow hole 41 is formed between two adjacent support ribs 42. The support ribs 42 support the support bearing 5 and minimize the occupied flow area, thereby ensuring the compressor's air intake and compression effect.

[0028] Preferably, the support ribs 42 are streamlined to minimize obstruction to the fluid, thereby increasing the air intake of the compressor.

[0029] Optionally, the cross-section of the support rib 42 is triangular, with the vertex of the triangle facing the axis of the rotating shaft 11. When the fluid passes through the support rib 42, it is divided at the vertex of the triangle and flows smoothly through the hypotenuse of the triangle, and finally passes through the support rib 42, effectively reducing the pressure loss of the fluid and ensuring the working efficiency of the compressor.

[0030] The vertex angle W of the triangle ranges from 15° to 90°. A smaller vertex angle results in less pressure loss for the fluid, but also reduces the structural strength of the support ribs 42, resulting in poorer support for the support bearing 5 and reduced compressor reliability. A larger vertex angle results in greater pressure loss for the fluid, but increases the structural strength of the support ribs 42 and improves support for the support bearing 5.

[0031] The number of support ribs 42 ranges from 3 to 10, and all support ribs 42 are distributed in a ring shape about the axis of the rotating shaft 11. The number of support ribs 42 is limited according to actual needs, and at least three support ribs are required to provide three-point support for the support bearing 5, thereby preventing displacement of the support bearing 5. Moreover, evenly distributing all support ribs 42 can evenly distribute the fluid entering the air inlet 31, thereby improving the uniformity of heat dissipation of the motor 1 and the suction effect of the compression assembly 2, further improving the operating efficiency of the compressor.

[0032] On the plane where the support bearing 5 is located, the ratio of the sum of the projected areas of all the support ribs 42 to the projected area of the intake end cover 3 is less than or equal to 0.4. This ensures that the support ribs 42 provide support for the support bearing 5 while minimizing the obstruction to fluid flow.

[0033] The motor 1 includes a stator 12, which surrounds the outside of the support bearing 5. The support rib 42 has an arc-shaped longitudinal cross-section, with the opening of the arc facing the stator 12. In other words, the axial dimension of the stator 12 is greater than the axial dimension of the rotor of the motor 1, ensuring the reliability of the rotor's operation. Since the stator 12 is too long, it will surround the outside of the support bearing 5. To avoid structural interference between the support rib 42 and the stator 12, the support rib 42 is configured with an arc-shaped longitudinal cross-section. This arc avoids the stator 12 while also providing support for the support bearing 5.

[0034] An intake duct is provided within the intake end cover 3, one end of which is in communication with the air inlet 31 and the other end of which is in communication with the compression assembly 2. The fluid (refrigerant and lubricating oil) flowing through the intake duct can cool the motor 1 (particularly the stator 12 of the motor 1) while also supplying air to the compression assembly 2, thereby ensuring its compression efficiency.

[0035] As an embodiment, the compression assembly 2 includes a male rotor and a female rotor that mesh with each other, and the male rotor is connected to the rotating shaft 11. The mutual meshing of the male rotor and the female rotor realizes compression of the fluid.

[0036] An air conditioning unit comprises the above-mentioned compressor.

[0037] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A compressor comprising a motor (1) and a compression assembly (2), wherein the compression assembly (2) is connected to a rotating shaft (11) of the motor (1), and is characterized in that: include: An air intake end cover (3), wherein the motor (1) is arranged in the air intake end cover (3), and an air inlet (31) is provided on the air intake end cover (3); A support member (4), the support member (4) being arranged on the air intake end cover (3), and the support member (4) being located between the air inlet (31) and the rotating shaft (11); A support bearing (5), wherein the support bearing (5) is arranged on the support member (4), and a portion of the rotating shaft (11) away from the compression assembly (2) is arranged on the support bearing (5); A flow hole (41) is formed on the support member (4), and the air inlet (31) is communicated with the compression assembly (2) through the flow hole (41); The support member (4) comprises at least two support ribs (42), one end of the support rib (42) is arranged on the suction end cover (3), and the other end is connected to the support bearing (5); The cross section of the supporting rib (42) is triangular, and the vertex of the triangle faces the axis of the rotating shaft (11); The vertex angle W of the triangle ranges from 15° to 90°; The motor (1) includes a stator (12), the stator (12) surrounds the outer side of the support bearing (5), the longitudinal section of the support rib (42) is arc-shaped, and the opening of the arc faces the stator (12).

2. The compressor according to claim 1, characterized in that: The flow hole (41) is formed between two adjacent support ribs (42).

3. The compressor according to claim 1, characterized in that: The number of the support ribs (42) ranges from 3 to 10, and all the support ribs (42) are distributed in a ring shape with the axis of the rotating shaft (11) as the axis.

4. The compressor according to claim 1, characterized in that: On the plane where the support bearing (5) is located, the ratio of the sum of the projected areas of all the support ribs (42) to the projected area of the air intake end cover (3) is less than or equal to 0.

4.

5. The compressor according to claim 1, characterized in that: An inlet flow channel is provided in the air intake end cover (3), one end of the inlet flow channel is in communication with the air inlet (31), and the other end is in communication with the compression assembly (2).

6. The compressor according to claim 1, characterized in that: The compression assembly (2) comprises a male rotor and a female rotor meshing with each other, and the male rotor is connected to the rotating shaft (11).

7. An air conditioning unit, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 6.

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