CN2200707Y - Symmetrical balance miniature non-oil air compressor - Google Patents

Abstract

The utility model relates to a miniature oil-free air compressor of which the motor has bidirectional output shaft corresponding with two crank link mechanisms and two gas cylinder piston mechanisms, and the motor and the air cylinder are installed and fixed to an integrated airway plate, wherein, the crank is in eccentric structure, the piston is in the shape of an acetabuliform leather cup, and the integrated airway plate is provided with high and low pressure airways which communicate with the air cylinder respectively. The utility model has the advantages of simple structure, superior performance, long service life, convenient serialized design, short development cycle and low development cost. The utility model can be used for medical appliances, precise analytical apparatus, light industry, environmental protection industry, etc.

Description

Symmetrical balance miniature non-oil air compressor

The utility model belongs to the mechanical ﹠ electrical technology field, is a kind of miniature oil-free air compressor.

Miniature oil-free air compressor mainly should be in industries such as medical apparatus, rigorous analysis instrument, food processing, light industry, environmental protection, and can provide does not have the clean source of the gas of oil.At present, the miniature oil-free air compressor of domestic existing has following 2 kinds.A kind of is diaphragm type compressor, and it utilizes the dilatation of diaphragm that the displacement generating period is changed.Diaphragm constantly is stretched under higher temperature during this class compressor operating, and aging easily, working life is shorter.Another kind is a Reciprocting piston compressor.Its motor and cylinder are an overall structure, and this class compressor arrangement, technology are complicated, and be higher to the quality requirement of component processing.Therefore, the first-time qualification rate of product is lower.In addition, when the series product of different output parameters such as exploitation exhaust pressure, extraction flow, need designing mould respectively, development cost are increased, the construction cycle prolongs, and product cost improves.

The purpose of this utility model is to provide a kind of simple in structure, steady quality, long service life, and the product of different output parameters is convenient to the miniature oil-free air compressor of seriation design.

The miniature oil-free air compressor of the utility model design is made up of motor, connecting rod, piston-cylinder mechanism, integrated air flue plate.Wherein, motor is that symmetric double is to shaft.The two cover crank linkage mechanisms, two that have that correspondingly cooperate with two shafts overlap piston-cylinder mechanisms.Motor and cylinder directly are mounted on the integrated air flue plate, the type oil-free air compressor thereby the formation symmetrical balance declines.Overall structure as shown in Figure 1.

Motor in the utility model is general optional with capacitor start formula single-phase asynchronous motor, and its standardized electric machine main shaft is retrofited, and the main shaft that promptly extends stretches out its two ends symmetry, so that cooperate installation with two cranks respectively.

In the connecting rod in the utility model, its crank is an eccentric wheel, this eccentric wheel has an axis hole that cooperates installation with Motor Shaft, eccentric wheel one side is a balancing disk, opposite side is the eccentric Cylinder of projection, both are connected as a single entity, and this Cylinder cooperates installation with the axle sleeve of bearing and connecting rod.Structure as shown in Figures 2 and 3.Connecting rod is the mitriform aluminium alloy castings.Structure as shown in Figure 4.The connecting rod bearing top has folding at interval, and screw hole is arranged, by rigid bearing after the screw-clamped.

Piston of the present utility model is dish-shaped leather cup, is installed on the piston base, and piston base is positioned at the tail end of connecting rod, its structure such as Fig. 5, shown in Figure 6.The butterfly leather cup is formed by the compacting of high molecular abrasion-proof material.Cylinder adopts the high-quality ceramic post sintering to form, and a step is arranged at its bottom, cylinder can be pressed on the cylinder seat of integrated air flue plate by the garden RunddichtringO.

Integrated air flue plate of the present utility model is positioned at the bottom of complete machine, has low pressure air flue and high pressure air flue on it, and the high and low pressure air flue cooperates with rubber seal and the bottom plate that has heat sink strip and forms low-pressure chamber and plenum chamber.Have inlet hole on the low pressure air flue, have exhaust port on the high pressure air flue.Control valve is housed respectively in two holes.When piston rose, air entered low-pressure chamber, entered cylinder through inlet hole.When the piston back pressure, the pressurized air in the cylinder enters plenum chamber through exhaust port, and discharges from gas port.Air flue plate structure such as Fig. 1 are shown in Figure 8.Heat sink strip is housed, to accelerate heat dissipation rate, structure such as Fig. 9 and shown in Figure 10 on the bottom plate.

The variation of the throw of eccentric of the eccentric garden post in the utility model on the eccentric wheel crank will cause the variation of output parameters such as exhaust pressure, extraction flow.According to the different requirements of different user to exhaust pressure and extraction flow, but the appropriate change throw of eccentric is designed different product.Therefore,, as long as select cylinder, the piston of corresponding size, change the throw of eccentric of crank, the length of connecting rod during design, be equipped with the motor of corresponding power again, can obtain the miniature oil-free air compressor of different delivery pressures and flow in order to develop series product.

This compressor arrangement is simple, overall performance is superior, and working life is longer than existing uniform machines, and is convenient to the seriation design of product, can shorten the Products Development cycle, reduces development cost.

Below in conjunction with drawings and Examples, further specify this compressor arrangement.

Fig. 1 is a complete machine structure figure.Fig. 2 is an eccentric wheel type crank cut-away view.Fig. 3 is an eccentric wheel type crank front view.Fig. 4 is bar linkage structure figure.Fig. 5 is the piston side view.Fig. 6 is the piston front view.Fig. 7 is air cylinder structure figure.Fig. 8 is the integrated air flue composition that hardens.Fig. 9 is the bottom plate front view that cooperates with integrated air flue plate.Figure 10 is the bottom plate side view.

Wherein, 1 is motor; 2 is the main shaft of motor; 3 is the eccentric wheel type crank; 4 is connecting rod; 5 is piston; 6 is cylinder; 7 for hold cooperating of connecting rod and crank; 8 is integrated air flue plate; 9 is the cylinder block on the integrated air flue plate; 10 is bottom plate; 11 for the eccentric wheel crank join the dish; 12 is the eccentric garden post of crank; 13 is the axis hole on the crank; 14 is set screw on the crank; 15 is connecting rod bearing; 16 is the fixed hole of opening and closing place, connecting rod top; 17 is piston base; 18 is the dish-shaped leather cup of piston, and 19 is leather cup and piston base fixed hole; 20 is cylinder bottom; 21 is cylinder sidewall; 22 is the low pressure air flue on the integrated air flue plate; 23 is the high pressure air flue; 24 is the seal ring of high and low pressure air flue; 25 is the inlet hole on the low pressure air flue, and 26 is the exhaust port of high pressure air flue; 27 is the heat sink strip on the bottom plate.

Embodiment, motor 1 is selected 370w capacitor start formula single-phase asynchronous motor for use, and its main shaft 2 advanced remodeling, length overall is 270mm, and the throw of eccentric of crank 3 is 6mm, and the axle sleeve place diameter of connecting rod 4 is 56mm, length of connecting rod is 87mm, dish leather cup 18 maximum diameters are 58mm, and the smallest base diameter is 54mm, highly is 6mm, thickness is 0.8mm, cylinder 6 external diameters are 65mm, and internal diameter is 58mm, highly are 21mm, integrated air flue plate 8 length are 280mm, width is 130mm, and thickness is 20mm, and each parts is by the designing requirement processing and fabricating.In order to reduce complete machine weight, the vacant position fluting of integrated air flue plate.

By the miniature oil-free air compressor that above-mentioned dimensional parameters is made, its spindle speed is 1400 rev/mins, and the standard exhaust pressure is 0.4MPa, and maximum exhaust pressure is 0.6MPa, and extraction flow is 30L/min.

Claims (4)

1, a kind of miniature oil-free air compressor, by motor, connecting rod, piston-cylinder mechanism, integrated air flue plate are formed, it is characterized in that said motor is that symmetric double is to shaft, with matching have two cover crank linkage mechanisms, two to overlap piston-cylinder mechanisms, and motor and cylinder directly are installed on the integrated air flue plate.

2, miniature oil-free air compressor according to claim 1, the crank that it is characterized in that said connecting rod is an eccentric wheel, this eccentric wheel has an axis hole of installing with the Motor Shaft coupling, there is the eccentric Cylinder of a projection in the outside, and this Cylinder cooperates installation with the axle sleeve of bearing and connecting rod.

3, miniature oil-free air compressor according to claim 1 is characterized in that the piston of said piston-cylinder mechanism is dish-shaped leather cup, is installed on the piston base, and base is positioned at the tail end of connecting rod.

4, miniature oil-free air compressor according to claim 1, it is characterized in that having low pressure air flue and high pressure air flue on the said integrated air flue plate, cooperate composition low-pressure chamber and plenum chamber with rubber seal and the bottom plate that has heat sink strip between the high and low pressure air flue, the low pressure air flue has inlet hole, the high pressure air flue has exhaust port, and control valve is housed respectively in two holes.

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