Compressor and air conditioner having the same

Abstract

The present application provides a compressor and an air conditioner having the same, including a pump body assembly, a crankshaft, a first motor, and a second motor. The first motor, the pump body assembly, and the second motor are sequentially connected to the crankshaft, and the first motor and the second motor drive the crankshaft to rotate simultaneously. The first motor is a reluctance motor, and the second motor is a rare earth motor; or, the first motor and the second motor are the same motor, and the first motor and the second motor are electrically connected to a control system respectively; the control system can control the first motor and the second motor independently. According to the compressor and the air conditioner having the same of the present application, the probability of successful startup of the compressor can be increased.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioners, and particularly relates to a compressor and an air conditioner having the same. Background Art

[0002] At present, the internal pump body structure and the motor structure of the vertical variable-frequency variable-displacement rotary compressor or the variable-frequency double-cylinder rotary compressor in the prior art will cause problems such as no choice in the starting and control current magnitudes of the compressor, such as frequent problems like compressor tripping, jamming, and inability to start, and the optimal energy efficiency point of the motor is relatively single.

[0003] Therefore, how to provide a compressor and an air conditioner having the same that can improve the probability of successful starting of the compressor has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide a compressor and an air conditioner having the same that can improve the probability of successful starting of the compressor.

[0005] To solve the above problems, this application provides a compressor, including a pump body assembly, a crankshaft, a first motor, and a second motor. The first motor, the pump body assembly, and the second motor are sequentially connected to the crankshaft, and the first motor and the second motor drive the crankshaft to rotate simultaneously; the first motor is a reluctance motor, and the second motor is a rare earth motor;

[0006] Alternatively, the first motor and the second motor are the same motor, and the first motor and the second motor are respectively electrically connected to a control system; the control system can independently control the first motor and the second motor.

[0007] Further, when the first motor is a reluctance motor and the second motor is a rare earth motor, the rare earth motor is a two-pole motor; and / or, the reluctance motor is a three-pole motor.

[0008] Further, when the first motor and the second motor are respectively electrically connected to the control system, the control system includes a 20Kw motor controller.

[0009] Further, the pump body assembly includes a flange structure and a housing. The flange structure is arranged in the housing, and a welding hole is provided on the housing. The flange structure and the housing are welded through the welding hole; the number of welding points is 12, and the 12 welding points are sequentially arranged around the circumference of the flange structure; and / or, the aperture of the welding hole is 8mm.

[0010] Further, the flange structure includes an upper flange and a lower flange. The first motor is arranged above the upper flange, and the second motor is arranged below the lower flange.

[0011] Further, the compressor further includes feet disposed at the bottom of the housing, and the connection position between the feet and the housing is 40-50 mm above the bottom of the feet.

[0012] Further, the stator and / or rotor of the first motor is formed by stacking 60 silicon steel sheets; and / or, the stator and / or rotor of the second motor is formed by stacking 60 silicon steel sheets.

[0013] Further, the compressor has a first wiring structure and a second wiring structure. The first wiring structure is used to connect the first motor to external components; the second wiring structure is used to connect the second motor to external components.

[0014] Further, the compressor is a vertical variable-frequency variable-displacement rotary compressor or a variable-frequency double-cylinder rotary compressor.

[0015] According to another aspect of the present application, there is provided an air conditioner including a compressor, and the compressor is the compressor described above.

[0016] For the compressor provided by the present application and the air conditioner having the same, when the compressor of the present application operates, the motors at both ends operate to generate a relative dynamic potential balance, and the power of the upper and lower cylinders of the pump body is more sufficient and balanced; there is a two-way guarantee for the startup of the compressor, providing power in both directions under the complex working conditions of the variable-frequency compressor operation. For the prototype developed in the initial stage or the compressor mass-produced in the later stage, the probability of successful startup of the compressor can be greatly increased under harsh experimental working conditions and working environments. The present application can improve the probability of successful startup of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a sectional view of the compressor according to an embodiment of the present application;

[0018] Figure 2 is a sectional view of the compressor according to an embodiment of the present application;

[0019] Figure 3 is a sectional view of the compressor according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of the external structure of the compressor according to an embodiment of the present application.

[0021] The reference numerals are shown as:

[0022] 1. Pump body assembly; 11. Upper flange; 12. Lower flange; 13. Partition plate; 14. Cylinder; 15. Roller; 2. Crankshaft; 3. First motor; 31. Rotor; 32. Stator; 4. Second motor; 5. Feet; 6. Housing; 71. First wiring structure; 72. Second wiring structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Refer to Figures 1-4As shown in the figure, a compressor includes a pump body assembly 1, a crankshaft 2, a first motor 3 and a second motor 4. The first motor 3, the pump body assembly 1, and the second motor 4 are sequentially connected to the crankshaft 2. The first motor 3 and the second motor 4 drive the crankshaft 2 to rotate simultaneously. The first motor 3 is a reluctance motor, and the second motor 4 is a rare earth motor. When the compressor of the present application operates, the relative dynamic potential balance is generated by the operation of the motors at both ends, and the power of the upper and lower cylinders of the pump body is more sufficient and balanced. There is a two-way guarantee for the start of the compressor, providing power in both directions under the complex working conditions of a variable frequency compressor. For the prototype developed in the initial stage or the compressor produced in large quantities in the later stage, the probability of successful start of the compressor can be greatly increased under harsh experimental working conditions and working environments. Compared with the existing double-cylinder rotor 31 compressor, the present application increases the best energy efficiency point of the compressor motor, has a stronger selectivity of operating conditions. The first motor 3 and the second motor 4 can be driven synchronously, or single-phase single-machine drive is also possible. Each different driving effect will show a refrigeration effect within a defined interval and a working mode.

[0024] Alternatively, the first motor 3 and the second motor 4 are the same motors, and the first motor 3 and the second motor 4 are respectively electrically connected to the control system. The control system can independently control the first motor 3 and the second motor 4. With the cooperation of the differences in the motor types of the reluctance motor and the rare earth motor, the result of the power 1 + 1 will show the effect that the single-machine refrigerating capacity and COP of the compressor are greater than 2. The power output of the present application is relatively gentle, the single-machine operation is more stable, and the single-machine start is smoother due to the increase in the motor part. The single-machine refrigerating capacity and COP will be relatively increased, and the best energy efficiency point of the single-machine motor of the compressor is increased. The present application relatively improves the vibration and noise conditions of the existing single machine. The motor models at both ends of the present application are different, or the same model motors can also be used and controlled and adjusted for start and operation through the existing 20Kw controller, and starting conditions such as starting at one end, starting at both ends, and starting successively (auxiliary starting at one end) can be achieved. By providing dual-phase power through the first motor 3 and the second motor 4, the pump body of the compressor operates more stably, the power output is sufficient, and the transmission efficiency is higher.

[0025] The present application also discloses some embodiments. When the first motor 3 is a reluctance motor and the second motor 4 is a rare earth motor, the rare earth motor is a two-pole motor; and / or, the reluctance motor is a three-pole motor.

[0026] The present application also discloses some embodiments. When the first motor 3 and the second motor 4 are respectively electrically connected to the control system, the control system includes a 20Kw motor controller.

[0027] The present application also discloses some embodiments. The pump body assembly 1 includes a flange structure and a housing 6. The flange structure is disposed within the housing 6. The housing 6 is provided with welding holes, and the flange structure and the housing 6 are welded through the welding holes. The number of welding points is set to 12, and the 12 welding points are arranged in sequence around the circumference of the flange structure; and / or, the aperture of the welding holes is 8 mm, which helps the compressor pump body to operate more smoothly.

[0028] The present application also discloses some embodiments. The flange structure includes an upper flange 11 and a lower flange 12. The first motor 3 is disposed above the upper flange 11, and the second motor 4 is disposed below the lower flange 12.

[0029] The present application also discloses some embodiments. The compressor further includes feet 5, which are disposed at the bottom of the housing 6. The connection position between the feet 5 and the housing 6 is 40 - 50 mm from the bottom of the feet 5. The combination of the compressor single unit of the present application and the structure of the feet 5 can relatively improve the vibration and noise conditions of the previous single unit. The radial distance of the fixed point of the compressor of the present application is higher than that of the existing feet 5 fixed point, ensuring that the upper swing amplitude during the operation of the compressor is reduced. The structure of the feet 5 of the present application can also be welded to the housing 6 or detachably connected to the housing 6.

[0030] The present application also discloses some embodiments. The stator 32 and / or the rotor 31 of the first motor 3 is / are stacked by 60 silicon steel sheets; and / or, the stator 32 and / or the rotor 31 of the second motor 4 is / are stacked by 60 silicon steel sheets. That is, the stacking height or the number of silicon steel sheets of the stator 32 and the rotor of the internal motor part of the compressor of the present application is reduced to two-thirds of that in the prior art.

[0031] The present application also discloses some embodiments. The compressor has a first wiring structure 71 and a second wiring structure 72. The first wiring structure 71 is used to connect the first motor 3 to external components; the second wiring structure 72 is used to connect the second motor 4 to external components. The first wiring structure 71 and the second wiring structure 72 are at the upper and lower ends of the pump body assembly 1, and the first wiring structure 71 and the second wiring structure 72 are respectively the wiring posts arranged up and down for the compressor. The double wiring posts can ensure the start-up and operation of the compressor in a harsh environment and are controlled and adjusted for start-up and operation through an existing 20Kw controller; this idea can realize start-up situations such as starting at one end, starting at both ends, and starting successively (this method can be indirectly understood as integrating and improving efficiency); the improvement of the welding points of the feet 5 and the reinforcement of the structure of the feet 5 contribute to the overall stability during the operation of the compressor and help the foot pads to fully bear and resolve the forces generated during the operation of the compressor. Taking the 55-series compressor as an example, the controller used in the test is a three-phase control circuit large board + small board + hand-held controller.

[0032] The installation process of the compressor of the present application is as described below:

[0033] First, the assembly of the pump body: First, fix the upper flange 11 to the upper cylinder 14 and insert the roller 15 of the crankshaft 2 and the sliding vane, and adjust the optimal position of the cooperation between the cylinder 14 and the roller 15. The same applies to the lower flange 12, the cylinder 14, and the roller 15. Then, place the partition 13 in the middle part between the two eccentric circles of the crankshaft 2 and fix it. The upper and lower flanges 12, the cylinder 14, the roller 15, and the sliding vane are installed bidirectionally, and the assembly of the pump body is completed. Then, thermally sleeve and connect the stator 32 structure to the housing 6, and arrange the rotor 31 on the inner peripheral side of the stator 32. Fix the upper-end stator 32 by internal thermal sleeve (internal heating). Then, place the pump body assembly 1 and the rotor 31 assembly into the housing 6 assembly by means of the existing feeler gauge device, and then externally heat the bottom housing 6 assembly to thermally sleeve the end stator 32, thus completing the installation of the compressor assembly. And with the continuous development of the compressor installation process and equipment, the above process can be changed and developed. After the upper-end stator 32 is thermally sleeved, install the feeler gauge between the upper rotor assembly and the lower rotor assembly and place it into the housing 6. At this time, the pump body can be welded at twelve points, or temporarily reinforced by tightening twelve screws. After externally heating and thermally sleeving the lower-end stator 32, after the temperature of the compressor drops, remove the screws and perform welding. When removing the screws, remove them in two groups, with an angular interval of 120° between each group of screws, and the welding is also divided into two groups.

[0034] Some embodiments are also disclosed in this application. The compressor is a vertical variable-frequency variable-displacement rotary compressor or a variable-frequency double-cylinder rotary compressor.

[0035] According to an embodiment of the present application, an air conditioner is provided, including a compressor, and the compressor is the above-mentioned compressor.

[0036] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above advantageous ways can be freely combined and superimposed.

[0037] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and variations can be made without departing from the technical principle of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A compressor, which is a vertical variable-frequency variable-displacement rotary (31) compressor or a variable-frequency double-cylinder rotary (31) compressor, characterized in that, It includes a pump body assembly (1), a crankshaft (2), a first motor (3) and a second motor (4). The first motor (3), the pump body assembly (1), and the second motor (4) are sequentially connected to the crankshaft (2). The first motor (3) and the second motor (4) simultaneously drive the crankshaft (2) to rotate. The first motor (3) is a reluctance motor, and the second motor (4) is a rare earth motor. Or, the first motor (3) and the second motor (4) are the same motor, and the first motor (3) and the second motor (4) are respectively electrically connected to a control system. The control system can independently control the first motor (3) and the second motor (4). When the first motor (3) and the second motor (4) are respectively electrically connected to the control system, the control system includes a 20Kw motor controller for realizing starting conditions such as starting from one end, starting from both ends, and starting successively. The compressor has a first wiring structure (71) and a second wiring structure (72). The first wiring structure (71) is used to connect the first motor (3) to an external component. The second wiring structure (72) is used to connect the second motor (4) to an external component.

2. The compressor according to claim 1, wherein When the first motor (3) is a reluctance motor and the second motor (4) is a rare earth motor, the rare earth motor is a two-pole motor; and / or, the reluctance motor is a three-pole motor.

3. The compressor according to claim 1, characterized in that, The pump body assembly (1) includes a flange structure and a housing (6). The flange structure is arranged inside the housing (6). The housing (6) is provided with welding holes. The flange structure and the housing (6) are welded through the welding holes. The number of welding points is set to 12, and the 12 welding points are sequentially arranged around the circumference of the flange structure; and / or, the aperture of the welding hole is 8mm.

4. The compressor according to claim 3, wherein The flange structure includes an upper flange (11) and a lower flange (12). The first motor (3) is arranged above the upper flange (11), and the second motor (4) is arranged below the lower flange (12).

5. The compressor according to claim 3, characterized in that, The compressor further includes feet (5). The feet (5) are arranged at the bottom of the housing (6). The connection position between the feet (5) and the housing (6) is 40 - 50mm away from the bottom of the feet (5).

6. The compressor according to claim 1, wherein, The stator (32) and / or the rotor (31) of the first motor (3) is stacked by 60 silicon steel sheets; and / or, the stator (32) and / or the rotor (31) of the second motor (4) is stacked by 60 silicon steel sheets.

7. An air conditioner, comprising a compressor, characterized in that, The compressor is the compressor according to any one of claims 1 - 6.

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