JPS582390Y2 - pressure gas engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure gas engine driven by pressure gas supplied from a cylinder of liquefied carbon dioxide or other liquefied gas.

Conventionally, an engine driven by air pressure at a pressure of 5 kg/cm has been used as the driving source for the model, but this requires a very large air tank and is therefore heavy and difficult to handle.

For this reason, a pressure gas engine using liquefied carbon dioxide gas has recently been devised, but since this engine uses 60 kg/crn2 of pressure gas from a liquefied carbon dioxide gas cylinder as a direct pressure source, the operating time of the engine with one cylinder is short. It is inconvenient that it is so uneconomical.

The purpose of the present invention is to obtain a pressure engine that does not have such inconveniences, and is of a type in which pressure gas from a liquefied gas cylinder 1 acts on the upper surface of a piston 4 of an engine body 3 via a timing valve 2. , a pressure reducing valve 5 and a surge tank 6 are interposed between the liquefied gas cylinder 1 and the timing valve 2.

To explain this in more detail, the pressure reducing valve 5 includes a vertical plunger 8 provided in a valve housing 7, a ball valve 10 interposed in a ventilation passage 9 provided in the plunger 8, and a valve housing 7. The plunger valve 8 has a projection 11 facing the lower surface of the ball valve 10 supported by the plunger valve 8, and a vaporization chamber 12 for vaporizing the liquefied gas from the liquefied gas cylinder 1 in the upper valve housing 7 of the plunger valve 8, and a surge tank in the lower part. The air chamber 13 connected to the gas chamber 6 is exposed so as to reduce the pressure of the high-pressure gas vaporized in the vaporization chamber 12.

This pressure reduction is caused by a spring 14 acting on the lower surface of the plunger valve 8.
One end of the spring 14 is supported by an adjusting screw 15 screwed into the valve housing 7, so that the set spring pressure can be adjusted, and the spring 14 is set by the spring pressure of the projection 11. It is provided on the adjusting screw 16 screwed onto the adjusting screw 15, thereby adjusting the timing of contact with the ball valve 10.

The engine body 3 also includes a cylinder 18 into which a piston 4 is slidably inserted, a cylinder head 19 attached to the upper end of the cylinder 18, a crankcase 20 connected to the lower part of the cylinder 18, and a crank housed within the crankcase 20. 21, and 1 of the crankshaft 22 of the crank 21.
A ventilation hole 23 communicating with the inside of the surging tank 6 is provided in the center of the cylinder 18, and a cylinder head 19 is provided in the side wall of the cylinder 18.
A through hole 24 is provided which communicates with the upper surface of the piston in the cylinder 18 through the through hole 24, and the timing valve 2 is a rotary valve type that opens when the piston approaches the top dead center. did.

In the drawing, 25 is a bleed valve provided on the valve housing 7, 26 is a mounting hole into which the cylinder 1 is removably inserted, 27 is a propeller provided on the other crankshaft 22, and 28 is a connection between the crank 21 and the piston. It's a corn rod.

In this case, the plunger valve 8 is always pushed by the pressure in the spring 14 and the surge tank 6 and remains in the upward movement position as shown in the figure.

However, in order to drive the engine body 3, the gas in the surge tank 6 is consumed, the pressure in the tank 6 is reduced, and the plunger valve 8 is pushed down by the gas pressure in the vaporization chamber 12, causing the plunger valve 8 to move downward. 10 hits the protrusion 11 and when the plunger valve 8 moves further downward, it is pushed open against the spring 29.

Therefore, high pressure gas flows into the surge tank 6 through the ventilation path 9.

When the pressure on the surge tank 6 side increases due to the inflow of this high-pressure gas, the plunger valve 8 is pushed by this and moves upward again, and the ball valve 10 is released from being pushed open by the protrusion 11, so that the high-pressure gas flows into the surge tank 6. The influx of people is cut off.

By repeating this, a constant reduced pressure state is maintained in the surge tank 6, and since the surge tank 6 has a relatively large space, there is no pressure fluctuation.

Then, the reduced pressure gas is transferred to the timing valve 2.
Since it acts on the upper surface of the piston 4 through the liquefied gas, the output obtained from the engine body 3 is constant, and long-term driving is possible with limited liquefied gas.

In this way, according to the present invention, the pressure reducing valve 5 and the surge tank 6 are interposed between the liquefied gas cylinder 1 and the timing valve 2, so that the high pressure gas from the liquefied gas cylinder 1 can be effectively used and the limited The liquefied gas in the cylinder enables long and stable operation, and since it is driven by reduced gas pressure, it is possible to relatively easily seal each part of the engine body, making manufacturing easier. The effect is that a high pressure engine can be obtained.

[Brief explanation of the drawing]

The drawing is a cutaway side view of one example of implementing the present invention. 1...Liquefied gas cylinder, 2...Timing valve, 3...Engine body, 5...
...Pressure reducing valve, 6...Surge tank.

Claims (1)

[Scope of utility model registration request] Pressure gas from liquefied gas cylinder 1 is transferred to timing valve 2.
A pressure gas engine in which a pressure reducing valve 5 and a surge tank 6 are interposed between the liquefied gas cylinder 1 and a timing valve 2, in which the pressure gas engine acts on the upper surface of a piston 4 of an engine body 3 through a pressure gas engine.