CN102953955A - Compressor with liquid piston - Google Patents

Abstract

Disclosed is a compressor with a liquid piston. Suction and exhaust of a cylinder are achieved by replacing traditional piston motion with ascending and descending of liquid driven by a pump in the cylinder, friction of a liquid piston with a cylinder wall is much smaller than friction of a solid piston with the cylinder wall, and accordingly efficiency is improved and service life is prolonged. In addition, the liquid piston and the cylinder can be made into a parallel structure of a plurality of small tubes, and accordingly the defect that a traditional cylinder is hard to radiate when diameter is large is overcome and manufacture cost of the compressor with the liquid piston is low.

Description

A kind of liquid piston compressor

Affiliated technical field

The present invention relates to a kind of positive displacement compressor, belong to the Compressor Technology field.

Background technique

Positive displacement compressor generally adopts piston type at present, and this piston compressor makes it Efficiency Decreasing owing to the friction of piston and cylinder wall, and the life-span is shorter, and is difficult to heat radiation when cylinder bore is larger.

Summary of the invention

For overcoming the deficiencies in the prior art, the invention provides a kind of liquid piston compressor, this liquid piston compressor utilizes pump to drive the liquid traditional piston movement of replacement that rises or descend in cylinder and realizes the air-breathing and exhaust of cylinder, because the frictional ratio solid piston of liquid piston and cylinder wall and the friction of cylinder wall are much smaller, efficient and life-span have so just been improved, liquid piston and cylinder can be made many tubule parallel-connection structures in addition, solved the difficult problem that traditional cylinder bore is difficult to dispel the heat when larger, and apparatus cost is lower.

Structure of the present invention comprises cylinder, accommodating pressure-transmitting liquid, pump, one-way valve, selector valve.Accommodating pressure-transmitting liquid such as water, wet goods are housed in the described cylinder, and cylinder head is communicated with respectively suction port and relief opening by one-way valve, and cylinder bottom is communicated with pump by selector valve.

The invention has the beneficial effects as follows, adopt liquid piston to solve the friction and wear of piston and cylinder wall, so just improved efficient and life-span, liquid piston and cylinder can be made many tubule parallel-connection structures, solved the difficult problem that traditional cylinder bore is difficult to dispel the heat when larger, and apparatus cost is lower.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is another kind of example structure schematic representation of the present invention.

1. relief openings among the figure, 2. suction port, 3. breather check valve, 4. exhaust check valve, 5. cylinder, 6. selector valve, 7. pump, 8. cylinder, 9. exhaust check valve, 10. breather check valve.

Embodiment

In Fig. 1, cylinder is equipped with accommodating pressure-transmitting liquid in (5), cylinder (5) top is communicated with respectively suction port (2) and relief opening (1) by breather check valve (3) and exhaust check valve (4), and cylinder (5) bottom is communicated with pump (7) by selector valve (6).Cylinder is equipped with accommodating pressure-transmitting liquid in (8), cylinder (8) top is communicated with respectively suction port (2) and relief opening (1) by breather check valve (10) and exhaust check valve (9), and cylinder (8) bottom is communicated with pump (7) by selector valve (6).

During work, it is inner that startup pump (7) is extracted into cylinder (8) with the inner accommodating pressure-transmitting liquid of cylinder (5), at this moment the breather check valve (3) at cylinder (5) top is opened, exhaust check valve (4) is closed, carry out air-breathing, the exhaust check valve (9) at cylinder (8) top is opened, and breather check valve (10) is closed, and carries out exhaust.By the time cylinder (5) is filled gas, selector valve (6) commutates during the drained gas of cylinder (8), at this moment that the inner accommodating pressure-transmitting liquid of cylinder (8) is extracted into cylinder (5) is inner for pump (7), the breather check valve (10) at cylinder (8) top is opened, exhaust check valve (9) is closed, and carries out air-breathingly, and the exhaust check valve (4) at cylinder (5) top is opened, breather check valve (3) is closed, and carries out exhaust.Control lower cylinder (5) and cylinder (8) at selector valve (6) hockets air-breathing and exhaust like this, makes relief opening (1) continuous exhaust pneumatic wallop, and suction port (2) continuous gas entry forms continuous compression work.

Fig. 2 is another kind of embodiment, and its difference is that cylinder (5) and cylinder (8) consist of by many tubules, and this structure has increased the heat exchange area of cylinder with the external world, thereby can dispel the heat better.

Claims (1)

1. a liquid piston compressor comprises cylinder, accommodating pressure-transmitting liquid, pump, one-way valve, selector valve.It is characterized in that being equipped with in the cylinder accommodating pressure-transmitting liquid such as water, wet goods, cylinder head is communicated with respectively suction port and relief opening by one-way valve, and cylinder bottom is communicated with pump by selector valve.

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