Split type asynchronous compressor

Abstract

The invention relates to the technical field of compressors, in particular to a split type asynchronous compressor which comprises a motor side shell, and a motor and a power shaft driven by the motor are contained in the motor side shell. A pump body and a crankshaft penetrating through the pump body are contained in the pump body side shell, and the pump body side shell and the motor side shell are detachably connected to form a closed compressor shell; the partition plate is arranged in the end, close to the motor side shell, of the pump body side shell and connected with the pump body side shell in a sealed mode. The speed reducer is arranged in the pump body side shell and connected with the partition plate in a sealed mode, and the input end and the output end of the speed reducer are connected with the power shaft and the crankshaft respectively. The motor side and the pump body side of the compressor are separated from each other, the motor side and the pump body side can be independently maintained and replaced, and therefore the replacement cost of the compressor can be greatly saved, and the adaptation capacity of the compressor is improved. Meanwhile, by additionally arranging the speed reducer, asynchronous operation of the motor and the pump body is achieved, and the overall efficiency of the compressor can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a split asynchronous compressor. Background Art

[0002] At present, the main form of rotary compressor is that the motor and pump body are inside the same closed casing. Once this integrated compressor is assembled and put into use, it will no longer be repaired. When any part of the compressor motor or pump body fails, the entire compressor can only be replaced, which increases the cost of maintenance and replacement.

[0003] After the existing rotor compressor is produced, it is determined to be a fixed speed or variable frequency model, that is, the motor is fixed. Therefore, in some multi-scenario applications, if you want to change the compressor model, you can only replace the compressor as a whole. In this way, the application scenarios of the compressor are limited, and a compressor can only be used in specific scenarios.

[0004] In addition, the working efficiency of the motor increases with the increase of speed, but the working efficiency of the pump body decreases with the increase of speed, resulting in that when the pump body and the motor of the compressor are running synchronously, the pump body and the motor cannot work in their respective optimal efficiency ranges at the same time. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a split asynchronous compressor, which can realize the separate maintenance and replacement of the motor and the pump body, and enable the motor and the pump body to work in their respective optimal efficiency ranges at the same time.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a split asynchronous compressor, comprising: a motor side housing, in which a motor and a power shaft driven by the motor are arranged; a pump body side housing, in which a pump body and a crankshaft passing through the pump body are arranged, and the pump body side housing and the motor side housing are detachably connected to form a closed compressor housing; a partition plate, which is arranged in one end of the pump body side housing close to the motor side housing and is sealed and connected to the pump body side housing; a reducer, which is arranged in the pump body side housing and is sealed and connected to the partition plate, and the input end and the output end of the reducer are respectively connected to the power shaft and the crankshaft.

[0008] Preferably, the partition plate is connected to the pump body side housing by interference fit.

[0009] Preferably, a motor side flange is provided at one end of the motor side housing close to the pump side housing, and a pump side flange is provided at one end of the pump side housing close to the motor side housing, and the motor side flange and the pump side flange are detachably sealed and connected.

[0010] Preferably, the reducer is sealed and connected to the partition through a reducer housing.

[0011] Compared with the prior art, the present invention has significant improvements:

[0012] The split asynchronous compressor of the present invention is assembled by a motor side housing and a pump side housing which are detachably connected to form a closed compressor housing, the motor and the pump body are placed in the motor side housing and the pump side housing respectively, and a partition and a reducer are arranged in the pump side housing, and the partition and the reducer are combined to form a seal at one end of the pump side housing close to the motor side housing, so as to separate the internal space of the motor side housing from the internal space of the pump side housing, thereby realizing the separation of the compressor motor side and the pump side, and the motor side and the pump side can be repaired and replaced separately by disassembling the motor side housing and the pump side housing, thereby greatly saving the replacement cost of the compressor; after the motor side and the pump side can be replaced separately, the displacement, speed range, etc. of the compressor in use can also be changed by replacing motors and pump bodies of different specifications, thereby greatly improving the adaptability of the compressor. At the same time, by adding a reducer between the power shaft on the motor side and the crankshaft on the pump side, the asynchronous operation of the motor and the pump body is realized, thereby making full use of the characteristics that the motor is more efficient at high speed and the pump body is more efficient at low speed, greatly improving the efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a split asynchronous compressor according to an embodiment of the present invention.

[0014] The reference numerals are described as follows:

[0015] 1 Motor side housing

[0016] 11 Motor side flange

[0017] 2 Motor

[0018] 21 Stator

[0019] 22 Rotor

[0020] 3 Power shaft

[0021] 4 Pump side casing

[0022] 41 Pump body side flange

[0023] 5 Pump body

[0024] 6 Crankshaft

[0025] 7 Partition

[0026] 8 Reducer DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] 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.

[0030] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0031] like Figure 1 The figure shows an embodiment of the split asynchronous compressor provided by the present invention. The split asynchronous compressor of this embodiment comprises a motor side housing 1 , a pump side housing 4 , a partition plate 7 and a reducer 8 .

[0032] The motor side housing 1 and the pump side housing 4 are both hollow inside and form a concave cavity with one end open and the other end closed. The pump side housing 4 and the motor side housing 1 are detachably connected to form a closed compressor housing, specifically, one end of the pump side housing 4 opening is detachably connected to one end of the motor side housing 1 opening, thereby assembling to form a closed compressor housing.

[0033] Preferably, a motor side flange 11 is provided at one end of the motor side housing 1 close to the pump side housing 4, that is, a motor side flange 11 is provided at one end of the motor side housing 1 that is open, and a pump side flange 41 is provided at one end of the pump side housing 4 close to the motor side housing 1, that is, a pump side flange 41 is provided at one end of the pump side housing 4 that is open, and the motor side flange 11 and the pump side flange 41 are detachably sealed and connected, so that the pump side housing 4 and the motor side housing 1 are assembled to form a closed compressor housing. The manner in which the motor side flange 11 and the pump side flange 41 are detachably sealed and connected is not limited, for example, a sealing ring can be provided between the motor side flange 11 and the pump side flange 41, and the motor side flange 11, the sealing ring and the pump side flange 41 are fastened and connected by fasteners such as bolts. The flange connection method can facilitate the assembly and disassembly of the motor side housing 1 and the pump side housing 4.

[0034] The motor 2 and the power shaft 3 driven by the motor 2 are placed in the motor side housing 1, that is, the motor 2 and the power shaft 3 are placed separately in the motor side housing 1. The motor 2 includes a stator 21 and a rotor 22, the outer ring of the stator 21 is fixedly connected to the motor side housing 1, so that the motor 2 is installed and fixed in the motor side housing 1, the rotor 22 is arranged inside the stator 21, and the power shaft 3 is passed through the rotor 22 and fixedly connected to the rotor 22, so that the motor 2 rotor 22 drives the power shaft 3 to rotate synchronously.

[0035] The pump body 5 and the crankshaft 6 passing through the pump body 5 are placed in the pump body side housing 4, that is, the pump body 5 and the crankshaft 6 are placed in the pump body side housing 4. The pump body 5 is the compression structure of the compressor, and the eccentric portion of the crankshaft 6 drives the piston to perform eccentric motion inside the pump body 5 to compress the working medium entering the pump body 5. The pump shell of the pump body 5 is fixedly connected to the pump body side housing 4, so that the pump body 5 is installed and fixed in the pump body side housing 4.

[0036] The partition plate 7 is disposed in one end of the pump side housing 4 close to the motor side housing 1, and the partition plate 7 is sealed and connected to the pump side housing 4, so that the open end of the pump side housing 4 is sealed by the partition plate 7, so that the internal space of the motor side housing 1 and the internal space of the pump side housing 4 are separated from each other by the partition plate 7. Preferably, the partition plate 7 and the pump side housing 4 are connected by interference fit. Of course, the partition plate 7 and the pump side housing 4 can also be sealed and connected by other means, such as welding.

[0037] The reducer 8 is arranged in the pump body side housing 4, and the reducer 8 is sealed and connected to the partition 7. Preferably, the reducer 8 is sealed and connected to the partition 7 through the reducer housing, and the sealing connection method of the reducer housing and the partition 7 is not limited, for example, welding or bolts and sealing gaskets can be used for fastening connection. The input end and output end of the reducer 8 are respectively connected to the power shaft 3 and the crankshaft 6. The input end of the reducer 8 is connected to the power shaft 3 and rotates synchronously, and is used to receive the rotational torque from the power shaft 3. The output end of the reducer 8 is connected to the crankshaft 6 and rotates synchronously, and is used to output torque to the crankshaft 6 to drive the crankshaft 6 to operate. The input end and the output end of the reducer 8 are connected in a reduction transmission, that is, the output speed of the output end is less than the input speed of the input end. By adding a reducer 8 to connect the power shaft 3 on the motor 2 side and the crankshaft 6 on the pump body 5 side, the speed of the crankshaft 6 on the pump body 5 side is lower than the speed of the power shaft 3 on the motor 2 side, and the asynchronous operation of the motor 2 and the pump body 5 is realized, thereby making full use of the characteristics that the motor 2 is more efficient at high speeds and the pump body 5 is more efficient at low speeds, greatly improving the efficiency of the compressor. Through the sealed connection between the reducer 8 and the partition 7, and the sealing structure of the input and output ends of the reducer 8, the partition 7 is guaranteed to effectively separate the internal space of the motor side housing 1 from the internal space of the pump body side housing 4, that is, the sealed connection between the partition 7 and the pump body side housing 4, the sealed connection between the reducer 8 and the partition 7, and the sealing structure of the reducer 8 are used to effectively separate the internal space of the motor side housing 1 from the internal space of the pump body side housing 4.

[0038] The split asynchronous compressor of this embodiment is assembled by a detachably connected motor side housing 1 and a pump body side housing 4 to form a closed compressor housing, the motor 2 and the pump body 5 are placed in the motor side housing 1 and the pump body side housing 4 respectively, and a partition 7 and a reducer 8 are arranged in the pump body side housing 4, and the partition 7 and the reducer 8 are combined to form a seal at one end of the pump body side housing 4 close to the motor side housing 1, thereby separating the internal space of the motor side housing 1 from the internal space of the pump body side housing 4, thereby realizing the separation of the compressor motor 2 side and the pump body 5 side from each other, and the motor 2 side and the pump body 5 side can be separately repaired and replaced by disassembling the motor side housing 1 and the pump body side housing 4, thereby greatly saving the compressor replacement cost; after the motor 2 side and the pump body 5 side can be replaced separately, the displacement, speed range, etc. of the compressor in use can also be changed by replacing the motor 2 and the pump body 5 with motors 2 and pump bodies 5 of different specifications, thereby greatly improving the adaptability of the compressor.

[0039] In actual use, if a fault occurs on the motor 2 side, the motor 2 can be directly replaced; if a fault occurs on the pump body 5 side, the working medium in the compressor system can be evacuated first, and then the pump body 5 side can be replaced; if the original configuration of the compressor motor 2 cannot meet the current operating conditions, the motor 2 can be directly replaced.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A split asynchronous compressor, characterized in that: include: A motor-side housing (1), wherein the motor (2) and a power shaft (3) driven by the motor (2) are housed in the motor-side housing (1); A pump body side housing (4), wherein a pump body (5) and a crankshaft (6) passing through the pump body (5) are housed in the pump body side housing (4), and the pump body side housing (4) is detachably connected to the motor side housing (1) to form a closed compressor housing; A partition plate (7) is arranged in one end of the pump side housing (4) close to the motor side housing (1) and is sealed and connected to the pump side housing (4); A reducer (8) is arranged in the pump body side housing (4) and is sealed and connected to the partition (7); the input end and the output end of the reducer (8) are respectively connected to the power shaft (3) and the crankshaft (6).

2. The split asynchronous compressor according to claim 1, characterized in that: The partition plate (7) is connected to the pump body side housing (4) by interference fit.

3. The split asynchronous compressor according to claim 1, characterized in that: A motor side flange (11) is provided at one end of the motor side housing (1) close to the pump side housing (4), and a pump side flange (41) is provided at one end of the pump side housing (4) close to the motor side housing (1). The motor side flange (11) and the pump side flange (41) are detachably sealed and connected.

4. The split asynchronous compressor according to claim 1, characterized in that: The reducer (8) is sealedly connected to the partition (7) via a reducer (8) housing.

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