Pressure drawing structure and two-stage compressor
A compressor, two-stage technology, applied in the field of two-stage compressors, can solve problems such as difficult pump lubrication, performance and efficiency impact, and increased wear
Active Publication Date: 2017-06-20
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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Problems solved by technology
However, this pressure-inducing structure has obvious defects. Due to the effect of gravity, the lubricating oil in the first-stage exhaust chamber 13 flows against gravity. Due to the high density of the oil, it is difficult to complete the lubrication of the pump body, causing the pump Poor body oil supply, increased wear, performance and efficiency will be affected
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Embodiment Construction
[0017] as the picture shows, image 3 It is a schematic diagram of the pressure guiding structure of an embodiment of the present invention. like image 3 As shown, the pressure introduction structure of this embodiment is applied to a two-stage compressor, and the two-stage compressor includes: an upper cylinder 21, a lower cylinder 22, and an intermediate plate 24 is arranged between the upper cylinder 21 and the lower cylinder 22, wherein , the upper cylinder 21 has a suction hole 23, the lower cylinder 22 has a vane groove 25, one end of a pressure introduction channel 27 communicates with the suction hole 23 on the upper cylinder 21, and the pressure introduction channel 27 runs through the side of the upper cylinder 21 in turn The wall, the middle plate 24 , and the other end of the pressure introduction channel 27 communicate with the vane groove 25 .
[0018] The lower cylinder 22 also has a spring hole 28, whereby the exhaust pressure of the lower cylinder 22 is int...
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The invention discloses a pressure drawing structure which is applied to a two-stage compressor. The two-stage compressor at least comprises an upper air cylinder, a lower air cylinder and a middle plate which is arranged between the upper air cylinder and the lower air cylinder, wherein an air sucking hole is formed in the upper air cylinder; a blade slot is formed in the lower air cylinder; the pressure drawing structure further comprises a pressure drawing channel, wherein one end of the pressure drawing channel communicates with the air sucking hole in the upper air cylinder, and sequentially penetrates through the upper air cylinder and the middle plate; and the other end of the pressure drawing channel communicates with the blade slot. The pressure drawing structure adopts a novel pressure drawing channel structure to solve the problem that pressure difference at the two sides of a single-stage compression spring hole is great; the pressure drawing channel is from top to bottom, so that lubricating oil does not flow reverse to gravity, but flows into the lower cylinder body along the gravity, and therefore, the problem that lubricating oil has difficulty in entering the lower cylinder body while flowing reverse to the gravity is solved.
Description
technical field [0001] The invention relates to a two-stage compressor, in particular to a pressure introduction structure for the two-stage compressor. Background technique [0002] At present, the operating pressure difference of the CO2 compressor is extremely large, which will cause a very large load on the parts. In order to reduce the load on the parts, a two-stage compression structure is adopted. figure 1 Shown is a schematic diagram of an existing two-stage compression structure. As shown in the figure, the compressor includes a motor 1 and two compression units 2 and 3. The load of the compressor is borne by the two compression units, so that the load of the parts in each compression unit will be greatly reduced, so that it can be significantly Improves the overall performance of the compressor. The structure of two-stage compression reduces the pressure difference of each stage and reduces the leakage between the internal working chambers of the compressor, whic...
Claims
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IPC IPC(8): F04C23/00
CPCF04C23/008
Inventor 张利黄小龙
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD