Piston offset regulation and control device for piston type direct-current linear compressor and regulation method of piston offset regulation and control device
A technology of linear compressor and control device, applied in piston pump, liquid variable capacity machinery, pump control and other directions, can solve the problems of inability to meet the design requirements, difficult to effectively improve the compression ratio, etc., to meet the design requirements, reduce the piston Offset, the effect of increasing the compression ratio
Pending Publication Date: 2022-07-26
上海铂钺制冷科技有限公司
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[0003] However, the overall performance of the current piston-type DC linear compressors still has deficiencies, for example, it is difficult to effectively increase the compression ratio, resulting in failure to meet the design requirements
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[0046] In the following description, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized.
[0047]Some innovative points of the embodiments of the present application are briefly described below:
[0048] The inventors of the present application have found through long-term research that the piston type DC linear compressor used in the J-T refrigerator is characterized by a higher compression ratio. A large pressure difference is formed between the pressure chambers, which leads to the phenomenon of piston bias that deviates from the equilibrium position during the movement of the piston. This problem will directly reduce the actual scavenging volume of the...
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The invention relates to the field of refrigeration and low-temperature engineering, discloses a piston bias regulation and control device for a piston type direct-current linear compressor and a regulation method of the piston bias regulation and control device, and aims to solve the problem of piston shaft bias caused by unbalanced backpressure in the operation process of the piston type direct-current linear compressor. The piston offset regulation and control device is composed of a branch tee joint, an electromagnetic regulation and control valve, a metering control valve, a branch bypass pipe and a machine shell sealing cover, and the whole structure is connected to an air suction pipeline of the compressor in parallel. Square wave signals with the same frequency are input into the electromagnetic regulation and control valve to control the electromagnetic regulation and control valve to be matched with the piston to move so as to be switched on and switched off, back pressure is adjusted to balance the pressure difference between the air cylinder and the back pressure cavity, and therefore the purpose of reducing offset of the piston is achieved. The piston type direct-current linear compressor effectively solves the problem that the efficiency and the compression ratio of the compressor are reduced due to the fact that the piston is biased in the operation process of the piston type direct-current linear compressor under the high-compression-ratio working condition.
Description
technical field [0001] The present application relates to the field of refrigeration and cryogenic engineering, and in particular to the technical field of piston type DC linear compressors. Background technique [0002] Piston type DC linear compressor is a kind of mechanical compressor, which is characterized in that the mover part reciprocates under the action of a linear drive source, which greatly reduces the movement process compared with the traditional crank connecting rod type piston compressor. The mechanical friction loss caused by the axial force in the middle and Africa improves the energy conversion efficiency, reduces the mechanical vibration and mechanical noise, and significantly improves the reliability of the compressor. [0003] However, the overall performance of the current piston-type DC linear compressor is still insufficient, for example, it is difficult to effectively increase the compression ratio, resulting in failure to meet the design requiremen...
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Login to View More IPC IPC(8): F04B35/04F04B49/00
CPCF04B35/04F04B49/005
Inventor 党海政赵永江
Owner 上海铂钺制冷科技有限公司