CN203296944U - Air-return-type air cylinder - Google Patents

Abstract

Disclosed is an air-return-type air cylinder. The bottom of a traditional engine air cylinder called as a main cylinder is closed. A lower end cover is designed on a main cylinder body. An exhaust hole, an air return hole and a piston rod via hole are machined in the lower end cover. The air inlet holes, an upper exhaust hole, the lower exhaust hole and the air return holes are formed in an upper end cover and the lower end cover of the main cylinder body and respectively provided with a valve. The piston rod via hole and a piston rod are designed to be of an airtight structure. A piston is connected with a crankshaft through the piston rod and a connecting rod. An upper exhaust pipe of the main cylinder is connected with another air pipe V and forms two branch circuits after passing through the valve K. According to one branch circuit, an air pipe V1 is communicated with the air return hole in the bottom of the cylinder body to form a loop. The other branch circuit is divided into an air pipe V2 after the air pipe V passes through the valve K. The air pipe V2 is connected with an air inlet of one auxiliary air cylinder called as an auxiliary cylinder and then enters the air inlet of a second auxiliary cylinder. According to each auxiliary cylinder, an upper end cover and a lower end cover are arranged on the traditional air cylinder body, an air inlet hole, an exhaust hole and an exhaust valve are arranged on the upper end cover, an exhaust hole and a piston rod via hole are formed in the lower end cover, and the valves are controlled to move by cams. The pistons of the main cylinder and the auxiliary cylinders jointly act on the same crankshaft after passing through the piston rod and the connecting rod. A main cylinder crank force arm and auxiliary crank force arms are opposite in direction.

Description

Return-air formula cylinder

Technical field

The utility model is related to machinery the field of power is provided, particularly a kind of return-air formula cylinder of return-air formula assistant cylinder engine.

Background technique

Existing its work of conventional engines principle is four strokes: one. suction stroke: be with gas and oil, diesel oil etc. suck cylinder with the inflammable gas that air mixes by a certain percentage.two. compression stroke: be the inflammable gas compression that sucks, three. expansion stroke: be that the inflammable gas after compression is lighted with spark plug b1 that (Design Technology for Diesels becomes high compression ratio, under high pressure produce the high temperature spontaneous combustion) the generation high pressure that rises of splashing, the pressurized gas pushing piston passes to power on bent axle and promotes the acting of acting mechanism by connecting rod, four. exhaust stroke: in order to guarantee mechanical operation, carry out lower one-stroke, the pressurized gas of completing after acting will be discharged from cylinder interior by outlet valve, the traditional design four-stroke engine, only having a stroke in the four-stroke work of cylinder is expansion stroke, the complete rear pressurized gas of air work are directly discharged engine by outlet pipe, and can not effectively utilize this part gas.

The model utility content

The utility model is the deficiency of mentioning in above " background technique " for conventional engines, a kind of design is provided, but can effectively utilizes the gas of this some work done of being drained, referred to here as return-air formula cylinder.

Concrete grammar is: changes former cylinder on the basis of original conventional, four-stroke cylinder (being called master cylinder), former cylinder bottom sealed, and at bottom machining piston bar via hole, return-air hole, and exhaust port.And the outlet pipe that is provided with of the top that adopts former conventional engines cylinder, suction tude, spark plug, different is to have connected a pipeline V-arrangement to become a gas S passage at original exhaust pipe mouth place, and pipeline V is being divided into two road V1 and V2 after valve K, and its V1 is connected with the bottom return-air hole of master cylinder, form a loop V1, it is indoor that this road gas S1 flow back into master cylinder bottom return-air through V1, and gas S1 produces pressure at piston lower surface, and this part gas pressure intensity equals piston upper-end surface gas pressure intensity.Another road gas S2 V2 by the road flows in auxiliary cylinder and goes to promote the acting of auxiliary cylinder piston,, as Fig. 1, has both increased assistant cylinder (can be designed to one or more cylinders) on original four stroke engine basis, and the pipeline by as shown in Figure 1 connects.

Description of drawings: Fig. 1 is the utility model return-air formula cylinder schematic diagram.

Fig. 2 is the utility model return-air formula cylinder stereoscopic principal figure.

The auxiliary cylinder expansion stroke of Fig. 3-1 master cylinder exhaust

The auxiliary cylinder exhaust in Fig. 3-2 master cylinder suction stroke

Fig. 4 is the utility model bent axle and stressed schematic diagram.

Fig. 5 is revolute pair (bearing)

Fig. 6 is that revolute pair (bearing) oblique line is and the frame gun iron link;

Fig. 7 is sliding pair (bearing);

Fig. 8 is that the thrust bearing oblique line is and the frame gun iron link;

In Fig. 1: angle 180 degree of master cylinder crank O1m1 and auxiliary cylinder crank O2m2 and auxiliary cylinder crank O3m3 form opposing torque and act on same bent axle A-A, and the gas S that the master cylinder exhaust stroke is discharged is split into S1, S2 gas after master cylinder inside exhaust pipe V and valve K.Enter respectively master cylinder muffler V1 and auxiliary cylinder suction tude V2.P1, p2, p3 are respectively the suffered pressure of each piston, and W is the crank sense of rotation.

the A-A bent axle, A1 return-air camshaft, A2-A2 air valve K and exhaust cam shaft, the A3 admission cam shaft, the A4 exhaust cam shaft, the c1 intake valve, c2, c3, c4, the c5 exhaust valve, c6 return-air door, the K1 master cylinder piston, K2, the auxiliary cylinder piston of K3, o1m1 master cylinder crank, m1L1 master cylinder connecting rod, O2m2, the auxiliary cylinder crank of O3m3, m2L2, the auxiliary cylinder rod of m3L3, the n1 intake cam, the n2 exhaust cam, the auxiliary cylinder exhaust cam of n3, the auxiliary cylinder exhaust cam of n4, n5 master cylinder exhaust cam, n6 master cylinder return-air cam, n7 exhaust family of power and influence K cam, the b1 spark plug, V master cylinder inside exhaust pipe, V1 master cylinder muffler, the auxiliary cylinder suction tude of V2, the auxiliary cylinder gas-distributing pipe of V3, the K air valve.

Embodiment:

return-air formula cylinder (or claiming return-air formula cylinder engine), its structure is seen return-air formula cylinder principle stereogram 2 and Fig. 1, by spark plug 1 (b1), cylinder block 2, suction tude 3, cam 4 (n1), admission cam shaft 5 (A3), valve 6 (K), spring 7, camshaft 8 (A2-A2), tracheae 9, exhaust valve 10 (c4), thrust bearing 11, exhaust port 12, piston 13, piston rod 14, connecting rod 15, bent axle 16 (A-A), piston rod bearing 17, crankshaft bearing 18, muffler 19 (V1), return-air valve 20 (c6), return-air cam 21 (n6), timing belt pulley 22, profile of tooth Timing Belt 23, return-air camshaft 24 (A1), lower exhaust cam shaft 25 (A4), bearing 26, (annotate: the another part symbol in Fig. 1 that the interior expression of above bracket is return-air formula cylinder schematic diagram) form.

For its working principle is described better, we illustrate what how it worked with return-air formula cylinder schematic diagram Fig. 1.The bottom of master cylinder body (title lower end cap) is processed with exhaust port, return-air hole, piston rod via hole.Be designed to airtight construction between via hole and piston rod, piston is connected bent axle through piston rod with connecting rod.Meet a tracheae V at the outlet pipe place of master cylinder, be divided into two road tracheae V1 and tracheae V2 after valve K, wherein a road tracheae V1 is communicated with cylinder base, forms a loop.Another road tracheae V2 is connected to auxiliary cylinder suction port.Air inlet and relief opening at master cylinder are designed with valve c1.c2.c5.c6, and another road gas s2 after valve k enters another two assistant cylinders (2 auxiliary cylinders, 3 each cylinder area of auxiliary cylinder are s1) through tracheae V2 at muffler, 1 cylinder of power stroke claims master cylinder, (annotate: the gas s2 of this road tracheae V2 can distribute to one or more cylinders).Each valve c1.c2.c3.c4.c5.c6. and valve k are connected with certain action precedence relationship by timing belt or timing chain.As shown in Figure 1, Figure 2: cam n1, the n2 that is equipped with on camshaft A1-A1, A2-A2, A3-A3, A4-A4, n3, n4, n5, n6 are connected to control the air valve folding time of each cylinder with the regular hour precedence relationship with bent axle. master cylinder crank O1m1 and auxiliary cylinder crank O2m2 and auxiliary cylinder crank O3m3 are designed to anti-phase 180 degree when crankshaft designs, master cylinder Exhaust Gas S enters auxiliary cylinder by tracheae and control valve K, promotes auxiliary cylinder piston k2, k3, by piston rod, bent axle is produced moment of torsion.Because master cylinder is communicated with up and down, master cylinder piston up and down pressure equates (being p1=p2), substantially the situation lower piston pressure that equates at master cylinder piston up and down area like this is also to equate that substantially (annotate: what master cylinder piston was suffered makes a concerted effort=p1 * S1-p2 * (S1-S2)=0, wherein S2 is the area of main cylinder piston-rod, and S1 is much larger than S2, therefore S2 can disregard), because another gas of master cylinder s2 body enters auxiliary cylinder, the pressure of master cylinder also equals the pressure (p1=p3) of auxiliary cylinder.Master cylinder piston upper and lower end face pressure equates to be in state of equilibrium, and be 0 to the moment of the generation of bent axle this moment, and the resistance that bent axle is formed is very little.And master cylinder crank O1m1 and auxiliary cylinder crank O2m2 and the anti-phase arm of force of auxiliary cylinder crank O3m3, bent axle namely mainly moves under the effect of the moment that auxiliary cylinder produces, the gas work done that so just can utilize master cylinder to discharge.Its working procedure is as follows:

One. the master cylinder suction stroke: auxiliary cylinder outlet valve c3, c4 open, and cam n1 opens valve c1; Cam n5 opens valve c5; Valve c2, c6 are in closed condition, and under external force from top dead center start move downward with the same piston of traditional motor this moment, with a certain proportion of mixed air and inflammable gas from c1 valve inspiration cylinder.In cylinder, air is discharged cylinder body from valve c5.Piston is until lower dead center is completed suction stroke.In this process, auxiliary cylinder piston moves upward from lower dead center under bent axle drives by linkage mechanism, and gas in the jar is discharged from c3, c4.

Two. the master cylinder compression stroke: auxiliary cylinder piston moves downward, and auxiliary cylinder exhaust valve c3, c4 open.Master cylinder valve c5 opens, and its other each valve is in closed condition.Master cylinder piston moves upward, with the mixed gas compression, until top dead center.

Three. the master cylinder power stroke: auxiliary cylinder outlet valve c3, c4 open.Master cylinder valve c5 opens, and this moment, its other valve was located still in closed condition under cam wheel, and by spark plug b1, lighted flammable compressed gas, and the splash pushing piston that rises of gas moves downward work done.Until lower dead center

Four. the auxiliary cylinder power stroke of master cylinder exhaust (as Fig. 3-1 figure): this moment, master cylinder piston will start to move upward in lower dead center, under the effect of corresponding cam, opened at first simultaneously exhaust valve c2, bottom return air valve c6 and the valve K of master cylinder.Master cylinder valve c1, c5 valve are in closed condition, assistant cylinder valve c3, c4 are in closed condition at this moment, gas is introduced into the bottom of master cylinder and causes up and down (pressure) pressure to equate, this moment, master cylinder piston was in state of equilibrium substantially, and the active force on bent axle is very little.Another part gas enters auxiliary cylinder simultaneously, promotes auxiliary cylinder piston and moves downward, and by piston crank mechanism, masterpiece is used on same bent axle, and mechanism externally continues work done under the promotion of this active force, until lower dead center.

Five. auxiliary cylinder exhaust master cylinder suction stroke (as Fig. 3-2 figure): auxiliary cylinder exhaust valve c3, c4 opens, master cylinder valve c5 opens, master cylinder moves downward under the effect of inertia of mechanism, repeat the suction stroke of master cylinder, just at this moment auxiliary cylinder outlet valve is opened, and the gas in auxiliary cylinder is discharged, and auxiliary cylinder piston is got back to top dead center. and cam action is to design according to the action request of above each valve valve.

From above return-air formula cylinder engine working principle Fig. 1 itself and existing traditional different being of cylinder engine as can be known: one, master cylinder lower end Feng Chengyi return-air chamber of working, and master cylinder is designed with a loop, by this loop, master cylinder is divided into up and down two parts, piston top is acting air chamber part, bottom is return-air air chamber part, so just forms the master cylinder part of the pressure air chamber space of piston up and down pressure as figure A.Former traditional cylinder lower aperture, and there is no gas return path, just with a cylinder, complete four strokes.Two and the design completes four strokes except master cylinder (identical with former design function), separately added two (can be designed to a plurality of or one) assistant cylinders.The work of main and auxiliary cylinder cooperatively interacts and finishes the work as Fig. 1 by the certain hour relation.

Claims (4)

1. return-air formula cylinder: by return-air formula master cylinder body, spark plug, assisted gas cylinder body, suction tude, cam, admission cam shaft, valve, spring, camshaft, tracheae, exhaust valve, thrust bearing, exhaust port, piston, piston rod, connecting rod, bent axle, piston rod bearing, crankshaft bearing, muffler, return-air door, return-air cam, timing belt pulley, Toothed belt, the return-air camshaft, lower exhaust cam shaft, bearing forms; It is characterized in that: the master cylinder bottom is sealed lower end cap of design, and process exhaust port, return-air hole and piston rod via hole on bottom head covers; Be designed with valve on the inlet hole of master cylinder, upper and lower exhaust port and return-air hole; Be designed to airtight construction between piston rod via hole and piston rod; Piston is connected bent axle through piston rod with connecting rod; The upper outlet pipe of master cylinder connects another tracheae V, and form two branch roads after valve K: a road tracheae V1 is communicated with the cylinder base return-air hole, forms a loop; Another road is divided into tracheae V2 after valve K at tracheae V, tracheae V2 connects an assistant cylinder suction port, then enters second auxiliary cylinder suction port, and the gas s2 of this road tracheae V2 can distribute to one or more auxiliary cylinders simultaneously; Each cylinder area is s1; The cylinder that is used for power stroke claims master cylinder.

2. return-air formula cylinder according to claim 1, it is characterized in that: the bottom head covers of master cylinder body is processed with lower exhaust port, return-air hole, piston rod via hole, and lower exhaust port is connected and leads to atmosphere with outlet pipe; Piston rod passes the piston via hole.

3. return-air formula cylinder according to claim 1, it is characterized in that: the return-air hole that the master cylinder bottom head covers is opened, the same tracheae V1 of this return-air hole is connected, and tracheae V1 is communicated with master cylinder upper end outlet pipe, form a loop, by this loop, master cylinder outlet pipe V is connected with bottom muffler V1.

4. return-air formula cylinder according to claim 1, it is characterized in that: tracheae V is communicated with master cylinder upper end outlet pipe, at tracheae V after valve K, be divided into two branch roads, one road tracheae V2 connects another assistant cylinder suction port, enter the second auxiliary cylinder by a minute gas port again, auxiliary cylinder suction port and a minute gas port communicate, and the gas s2 of this road tracheae V2 can distribute to one or more auxiliary cylinders simultaneously; Moment on master cylinder crank O1m1 on same bent axle and auxiliary cylinder crank O2m2 and auxiliary cylinder crank O3m3 is designed to opposite direction.

Images