CN102085516B - A kind of integrated pump pressure washer - Google Patents

Abstract

The present invention relates to a kind of integrated pump pressure washer.This monoblock type pressure washer has engine.In the bottom of engine is engine bottom.This engine bottom has the groove formed by cylindrical wall, and cylindrical wall stretches out from engine bottom.This pressure washer has pump assembly.This pump assembly is connected in engine bottom and covers and stretch into groove.This pump assembly receives water and pressurizes to water, and this pressure (hydraulic) water is guided out high-voltage tube.

Description

A kind of integrated pump pressure washer

This application claims the priority of the U.S. Provisional Application 61/266,214 that on December 3rd, 2009 proposes, and by the mode of reference, its full content is included in herein.

Copyright statement

The part of patent specification contains content protected by copyright.Anyone copies this patent document or patent specification, and all rights reserved has no objection per capita, because in its patent file being disclosed in patent and trademark office or record, in any case but will retain all copyright.

Technical field

The present invention relates to engine-driven pressure washer, relate more specifically to integrated pump pressure washer.

Background technology

Pressure washer is used for cleaning various surface by inject high pressure water.A kind of typical pressure washer is made up of the assembly of engine, pump, water inlet, high-pressure water pipe and rifle and rod.Water from garden hose is provided to the water inlet of pump usually.The engine rotation be connected with pump is for driving the bent axle of this pump.This pump pressurizes to water, and high pressure bar is drawn in high-pressure fog.The trigger that user applies pressure on high pressure bar is simply to open and close high-pressure fog.

Pressure washer can have different size and shapes.Usually, pressure washer is designed to portable, and therefore, in the design of pressure washer, size is a key factor, because links such as the size of pressure washer can affect from cost of transportation to stock's density, client's transport, storages.Therefore, expect a kind ofly there is identical performance but the less pressure washer of entire package.

A shortcoming of current pressure washer is exactly the end that pumping mechanism is only fastened by bolts simply to the driving shaft reaching external engine.Come by this way installation pump pressure washer may volume large and comprise optional feature, such as, foundry goods, seal and bearing.In the prior art, pump can by the additional extension as engine crankshaft.Pump case is directly formed integral to engine bottom or side cover by the present invention, thus provides the less pressure washer of a kind of profile.In addition, adopt the pressure washer of the present invention's design can gentlier and more efficient.

Summary of the invention

Disclose a kind of monomer engine bottom used in engine-driven pressure washer.This monomer engine bottom has the base it being connected with cylindrical wall.This cylindrical wall stretches out from base.This cylindrical wall forms groove, and this groove has bottom.Base is stretched in this bottom.This bottom has bent axle perforate, and this bent axle perforate allows bent axle pass and stretch out, and wherein this groove is suitable for installation pump assembly, and this pump assembly inserts this groove and invests this cylindrical wall.

Disclose a kind of monoblock type pressure washer.This monoblock type pressure washer comprises the engine further with engine bottom.This engine bottom has the groove formed by cylindrical wall, and cylindrical wall stretches out from engine bottom.This monoblock type pressure washer has pump assembly.This pump assembly is connected in engine bottom and covers and stretch into groove.This pump assembly receives water and pressurizes to water, and this pressure (hydraulic) water is guided out high-pressure outlet.

Disclose a kind of monoblock type pressure washer.This monoblock type pressure washer has engine.This engine bottom is engine bottom.This engine bottom is suitable for receiving pump assembly.This pump assembly has pump manifold and groove, and this groove is formed by the cylindrical wall stretched out from pump manifold.This pump assembly is directly connected in this engine bottom and covers, and this pump assembly receives water and pressurizes to water, and this pressure (hydraulic) water is guided out high-pressure outlet.

Accompanying drawing explanation

Fig. 1 shows power washer according to an aspect of the present invention.

Fig. 2 shows the engine of Fig. 1 medium power cleaning machine and the side perspective view of pump assembly.

Fig. 3 shows the engine of Fig. 1 medium power cleaning machine and the side view of pump assembly.

Fig. 4 shows the bottom view of the engine of removing pump assembly.

Fig. 5 shows engine bottom according to an embodiment of the invention.

Exploded view when Fig. 6 shows that the pump assembly engine bottom be installed to as shown in Figure 5 covers according to an embodiment of the invention.

Fig. 7 shows engine bottom according to another embodiment of the present invention.

Exploded view when Fig. 8 shows that the pump assembly engine bottom be installed to as shown in Figure 7 covers according to another embodiment of the present invention.

Fig. 9 shows the engine bottom according to further embodiment of this invention.

Figure 10 shows exploded view when covering according to the pump assembly engine bottom be installed to as shown in Figure 9 of further embodiment of this invention.

Figure 11 shows side view when pump assembly is installed in horizontal-shaft engines.

Figure 12 shows front view when pump assembly is installed in horizontal-shaft engines.

Detailed description of the invention

Although the present invention is described as multiple multi-form embodiment, it is shown in the drawings and be described in detail in this paper detailed description of the invention, but these embodiments of the present invention should be known just as the example of principle, instead of be intended to limit the invention to shown or described specific embodiment.In the following description, identical Reference numeral is used in multiple views of accompanying drawing, describe identical, similar or corresponding parts.These describe the implication limiting term as used herein in detail, and have carried out concrete description to embodiment, can implement the present invention to make those those skilled in the art.

Term " one ", when using in this article, is defined as one or more than one.Term " multiple ", when using in this article, is defined as two or more than two.Term " another ", when using in this article, is defined as at least two or more.Term " comprises " and/or " having ", when using in this article, is defined as comprising (namely, open-ended term).Term " connection ", when using in this article, is defined as being connected, but not necessarily directly, also not necessarily mechanically.

" embodiment ", " some embodiment " that whole file relates to and " a kind of embodiment " or analogous terms, represent at least one embodiment of the present invention the specific features, structure or the characteristic that contain and describe in conjunction with this embodiment.Therefore, the use of this phrase or the appearance of diverse location in whole description, must not refer to identical embodiment.In addition, can without restriction this specific features, structure or characteristic be attached in one or more embodiment in any suitable manner.

Term " or ", when using in this article, be interpreted as a set or represent any one or any combination.Therefore, " A, B or C " represents following implication arbitrarily: " A; B; C; A and B; A and C; B and C; A, B and C ".Only have the combination when element, function, step or effect be in inherently more inconsistent modes time, will the situation of exception be there is in these definition.

The figure described in accompanying drawing is to illustrate some suitable embodiment of the present invention, and should not be considered to be limited to this.Term " means " represents the function expected before being placed in certain present participle implemented, there is one or more embodiment for this reason, namely, one or more method, device or equipment for obtaining this desired function, those skilled in the art to see herein and can select in the equivalent way in these or they, and the use of term " means " is not to limit.

Fig. 1 shows monoblock type pump and pressure washer according to an embodiment of the invention.This monoblock type pump and pressure washer (hereinafter referred to as pressure washer 100) comprise engine 110, pump assembly 120 and rifle 102 and rod 103.Rifle 102 is connected to pump assembly 120 by gun hose 104.In the end of rifle 102, rod 103 guides it when pressurised stream outgoing.In the embodiment in figure 1, engine 110 is at the attached petrol engine having petrol tank of engine 110 sidepiece.Pressure washer 100 has handle 114, and it allows user to be easy to grasp and this pressure washer 100 mobile.Be water inlet connector 108 on this pump assembly, water pipe 106 can be connected with it.As shown in Figure 1, engine 110 is vertical shaft engine.

Can via water pipe 106 by water injection pump assembly 120.As described in subsequent section, when engine 110 operates, bent axle is rotated.The bent axle rotated impels the piston in pump assembly 120 to produce high pressure in pump assembly manifold.This high pressure is applied in water.This pressure (hydraulic) water is directed to gun hose 104 via high-tension connector 122 (see Fig. 2) then, when trigger 107 is pressed, by rifle 102 and to be directed to rod 103 outside.Although Fig. 1 shows a kind of petrol engine, the engine of other type also can be adopted to produce identical result according to inventive concept of the present invention.

Fig. 2 shows the engine 110 of pressure washer 100 and the side perspective view of pump assembly 120.Can see from this view, silencer 118 and spark plug 116 are positioned at the sidepiece of engine 110.This spark plug 116 is mounted into the top of cylinder, and cylinder is a part for engine block 140.This spark plug 116 provides and keeps the necessary spark of internal combustion engine operation.Fuel enters cylinder from petrol tank 112 by way of carburetor, thus is lighted by spark plug 116.Exhaust from internal combustion engine is discharged to outside cylinder and silencer 118 by way of exhaust valve then.In addition, machine oil spatters at engine 110 inner, and oil dipstick 111 can be used to the machine oil level determined in body 140.

The bottom of this body 140 is engine bottoms 130.Investing, engine bottom 130 is pump assemblies 120.This water inlet connector 108 and this high-tension connector 122 are positioned on pump assembly 120.This engine bottom 130 can be made up of cast aluminium and be that the bottom of body 140 provides seal.Compartment of terrain can be a packing ring 131 between body 140 and engine bottom 130.As shown in Figure 2, engine bottom 130 is integrated on body 140.

Fig. 3 shows the side view of engine 110 and pump assembly 120.As shown in Figure 3, this engine bottom 130 has top 132, and it stretches out from base 134 and wall 136.In the embodiments of figure 3, this wall 136 is cylindrical shapes.Although wall 136 is cylindrical shape, in other embodiments, this wall 136 can be any shape, as long as it is continuous wall and can encapsulates pump assembly 120.This wall 136 leaves base 134 and extends and form groove 138, and when pump assembly 120 is connected on engine 110, pump assembly 120 can stretch in groove.The bottom of groove 138 is bent axle perforates, and when engine bottom 130 invests engine 110, bent axle extends through bent axle perforate.This groove 138 and wall 136 combine also can be called as pump case.When being fixed to engine bottom 130, pump assembly 120 stretches in groove 138.

Fig. 4 shows the optimal view of pump case 139.Fig. 4 is the bottom view of the engine 110 removing pump assembly 120.In the embodiment shown in fig. 4, this engine bottom 130 is connected in the bottom 110 of engine and is held in place by bolt 181.The surface of engine bottom 130 can be flat or with ribbing.What stretch into groove 138 is bent axle 170 (see Fig. 7).As previously mentioned, bent axle 170 is connected to the piston of engine and is rotated when the engine runs.In one embodiment, bent axle 170 can arrange groove.In alternative embodiments, bent axle 170 can arrange key.Bent axle 170 being arranged key or groove, is to engage with the receiving member in pump assembly 120.

An advantage of the present invention is that bent axle 170 can be shorter, because compared to pressure washer of the prior art, the pump assembly 120 when being attached will more close to engine.Adopt the engine bottom 130 shown in Fig. 4 that pump assembly 120 can be allowed to be integrated into the bottom of engine.Pump assembly 120 is integrated into engine and will reduces the overall height of pressure washer 100.In addition, integrate pump assembly 120 also to make pressure washer manufacturer decrease pump assembly 120 is connected required number of components with engine 110.Such as, the bent axle/pump shaft sealing device that can be adopted to combine replaces crankshaft seal part separately and pump shaft seals.

Another advantage of the present invention is that independent casting is optional.Engine bottom 130 as illustrated in Figures 5 and 6 can be single casting part, thus the additional materials of cancellation required for many types of casting.Another advantage with the engine bottom 130 of integrated pump case 139 is engine bottom 130 to be fixed into the number of the securing member required for position can be less than the number needed for the engine bottom without integrated pump case 139.

In addition, the pressure washer 100 of design of the present invention is adopted only will to need a bearing assembly instead of two.Some pressure washers of the prior art have thrust bearing and journal bearing, can be removed in embodiments of the invention.When another advantage of the present invention is structure engine, the manufacturing process integrating, assemble and test only needs a step.Pump assembly 120 also can be assembled into engine bottom 130 by engine shop, thus allows engine shop to construct complete pressure washer 100.

Fig. 5 shows engine bottom 130 according to an embodiment of the invention.On engine bottom 130 is bolt mounting holes 144 and fin 142.Fin 142 can be used as radiator and provides the means shifted by partial heat, and these heats can be produced by engine when engine 110 runs.In the embodiment of Fig. 5, fin 142 can stretch out from wall 136 and extend the edge of engine bottom 130.What also illustrate on engine bottom 130 is pump assembly installing hole 146.In this embodiment, four pump assembly installing holes 146 are had.After engine bottom 130 is attached to the bottom of engine 110, pump assembly 120 can by attached and to tighten through pump assembly 120 and the bolt entering pump assembly installing hole 146 connects.

Engine bottom 130 can be made up of various types of metal.In one embodiment, this engine bottom 130 can be made up of cast aluminium.Alternatively, engine bottom 130 can be made up of cast iron or stainless steel.Multiple factor must be considered, such as but not limited to, weight, cost, manufacturability etc.Aluminium is due to its availability, cost and light weight, so aluminium is preferred.In any case engine bottom 130 should have enough thickness and intensity, thus when standing the operation of pump assembly 120 after overall package.

In one embodiment of the invention, this pump assembly 120 can be axial-flow pump.In any one axial-flow pump, piston moves up and down and defines pressure, and this pressure is applied to the water entering water inlet 108.In axial poiston pump, piston moves (vertically) along the direction identical with cylinder block center line.Axial poiston pump can be structure that is coaxial or angulation.The pressure that pump assembly 120 produces can up to 5,000 pound/square inch.Axial-flow pump is usually quite efficient and these pumps have excellent persistence usually.Usually need petroleum fluids to keep the lubrication of moving component in pump assembly 120.

The type of axial poiston pump can include but are not limited to, in-line arrangement pump, balance in-line arrangement pump and axis of bending axial-flow pump.In inline piston pumps, driving shaft and cylinder block are positioned on identical center line.The reciprocating motion of piston is caused by swash plate, and when cylinder block rotates, it is by piston slap.In one embodiment of the invention, driving shaft 170 rotation cylinder body, cylinder block supports this piston around an axle.Piston shoe against swash plate slide and by support chip keep with swash plate against.The angle of swash plate impels cylinder to move back and forth in their cylinder barrel/cylinder sleeve.Start the position of returning at piston, the perforate of cylinder barrel end slips over the inlet channel of valve plate, and within the cycle being slightly less than half, oil is inhaled in cylinder barrel.When piston is return completely, in valve plate, there is solid area.When piston starts to stretch out, the perforate in cylinder barrel moves across outlet slot, and oil is extruded pressure port.

Swing-plate type pump is a kind of modification of inline piston pumps.In this embodiment, cylinder barrel can not rotate.When being rotated by bent axle 170, be replaced by the swing of balance.The swing promotion piston of balance debouches supercharging (pumping) room in fixed air cylinder barrel.In swing-plate type pump, each piston needs the entrance and exit check-valves be separated, because piston can not move through certain Single port.

In angle-style or bending axis line style piston pump, by spherojoint, piston rod is connected on the flange of driving shaft.Key between cylinder block with axle is connected by universal link, thus makes both common rotations, but forms certain drift angle.Cylinder barrel transfers the valve plate of the fluting be connected with port against (turnagainst).Pump function is identical with in-line arrangement pump.Drift angle determines the displacement of pump, just as the angle of swash plate determines the displacement of in-line arrangement pump.In fixed delivery pump, this angle is constant.In the various modes, pivoted yoke makes cylinder block rotate to change displacement.The flow direction can be made reverse by suitable control.

Although the present invention can in conjunction with the pump adopting various types, the decomposition of Fig. 6 there is shown balance in-line arrangement axial-flow pump.As previously mentioned, bent axle 170 to be stretched out from engine 110 by the groove 138 of engine bottom 130 and enters pump assembly 120.

When bent axle 170 stretches into groove 138, attached crankshaft seal part 606 on bent axle 170.Crankshaft seal part 606 prevents the lubricant of any oil that may be utilized or other type from sewing groove 138 by bent axle 170.In alternative embodiments, crankshaft seal part 606 can be removed to allow the lubricant of oil or other type to flow into groove 138.

Bolt 604 is used for this pump assembly 120 to be connected on engine bottom 130, and bolt inserts pump manifold 139 and enters pump assembly installing hole 146.That pump assembly installing hole 146 is screw thread and be configured to bolt 604 suitable.

When pump assembly 120 is connected on engine bottom 130, bent axle 170 matches with balance 612.Before insertion balance 612, two lower thrust-bearing seat rings 608 and lower thrust-bearing frame 610 are placed on bent axle 170.Thrust axis bolster 610 can hold ball bearing so that the motion of balance 612.

One group of up-thrust bearing seat ring 616 and up-thrust bearing frame 618 above balance 612.Spring retainer 622 is fixed into position by spring fixed clamp 620.Pump piston 624 extends through piston return spring 626.Oil sealing 628 is connected to the bottom at piston 624.Oil sealing 628 is guaranteed to be contained in oil in pump assembly 120 or other type of lubricant and can not to be bled pump manifold 630.The pump case 139 that pump manifold 630 is connected to engine bottom 130 keep the parts of pump assembly 120 to be in suitable position.This pump manifold 630 is connected to engine bottom by bolt 650.

When engine 110 operates, bent axle 170 rotates, and impels balance 612 to rotate.Subsequently, the rotation of balance 612 impels piston 624 to move in upper and lower mode.The motion of piston 624 impels the generation of pressure and then puts on the water entering pump manifold 630, and is guided to subsequently outside high-pressure outlet 122.

As previously mentioned, by pump assembly 120 is integrated into engine bottom 130, the efficiency of pressure washer 100 can be improved.Make the parts of pump assembly closer to engine 110 and bent axle 170, reduce the length of bent axle 170 and can power transfer efficiency be increased.Pump assembly is integrated into engine bottom 130 to go back authorized pressure cleaning machine manufacturer and produce a kind of less power washer, even if can transmit can not more greatly but at least identical charging fluid for it.

Fig. 7 shows engine bottom 730 in accordance with another embodiment of the present invention.It is bolt mounting holes 744 on engine bottom 730.Different from the engine bottom 130 of Fig. 5, this engine bottom 730 does not hold the wall supporting pump assembly.Instead, as shown in Figure 8, pump assembly 820 has the wall 836 being formed with groove 838, and the internal part of pump assembly 820 is arranged in groove.In one exemplary embodiment, pump assembly 820 can have the internal part identical with pump assembly 120.The wall 836 of pump assembly 820 is directly connected on hood 730.

Return see Fig. 7, engine bottom 730 has pump assembly installing hole 746.In this embodiment, four pump assembly installing holes 746 are had.Get back to Fig. 8 now, using after engine bottom 730 to be linked the bottom of engine 110 by engine mounting holes 744, pump assembly 820 can by attached and to tighten through pump assembly 820 and the bolt entering pump assembly installing hole 746 connects.Bent axle 170 is stretched out from engine 110 by the groove 838 of pump assembly 820.

When bent axle 170 stretches into groove 838, attached crankshaft seal part 606 on bent axle 170.Crankshaft seal part 606 prevents the lubricant of any oil that may be utilized or other type from sewing groove 838 by bent axle 170.In alternative embodiments, removable crankshaft seal part 606 flows into groove 838 to allow the lubricant of oil or other type.

Bolt 604 is used for this pump assembly 820 to be connected on engine bottom 730, and bolt inserts pump manifold 839 and enters pump assembly installing hole 746.That pump assembly installing hole 746 is screw thread and be configured to bolt 604 suitable.

When pump assembly 820 is connected to engine bottom 730, bent axle 170 matches with balance 612.Before inserting balance 612, two lower thrust-bearing seat rings 608 and lower thrust-bearing frame 610 are placed on bent axle 170.Thrust axis bolster 610 can hold ball bearing so that the motion of balance 612.

One group of up-thrust bearing seat ring 616 and up-thrust bearing frame 618 above balance 612.Spring retainer 622 is fixed into position by spring fixed clamp 620.Pump piston 624 extends through piston return spring 626.Oil sealing 628 is attached in the bottom at piston 624.Oil sealing 628 is guaranteed to be contained in oil in pump assembly 820 or other type of lubricant and can not to be bled pump manifold 830.Pump manifold 830 utilizes bolt 850 to be connected to engine bottom 130 and keeps the parts of pump assembly 820 to be in suitable position.

When engine 110 operates, bent axle 170 rotates, and impels balance 612 to rotate.Subsequently, the rotation of balance 612 impels piston 624 to move in upper and lower mode.The motion of piston 624 impels the generation of pressure and then puts on the water entering pump manifold 830, and is guided to subsequently outside high-pressure outlet 122.

As previously mentioned, by pump assembly 820 is integrated into engine bottom 730, the efficiency of pressure washer 100 can be improved.Make the parts of pump assembly closer to engine 110 and bent axle 170, reduce the length of bent axle 170 and can power transfer efficiency be increased.Pump assembly is integrated into engine bottom 730 to go back authorized pressure cleaning machine manufacturer and produce a kind of less power washer, even if it can transmit charging fluid that can not be more but at least identical.

Fig. 9 shows the engine bottom 930 according to another embodiment of the present invention.It is bolt mounting holes 944 on engine bottom 930.Different from the engine bottom 730 in Fig. 7 and the engine bottom 130 in Fig. 5, this engine bottom 930 has the partial wall (Figure 10) supporting pump assembly 1020.Instead, as shown in Figures 9 and 10, pump assembly 1020 has the wall 1036 being formed with groove 1038, and the internal part of pump assembly 1020 is arranged in groove.In one exemplary embodiment, pump assembly 1020 can have the internal part identical with pump assembly 120.

Return see Fig. 9, engine bottom 930 has pump assembly installing hole 946.In this embodiment, four pump assembly installing holes 946 are had.Adopting after engine bottom 930 to be attached to the bottom of engine 110 by engine mounting holes 944, pump assembly 1020 can by attached and to tighten through pump assembly 1020 and the bolt entering pump assembly installing hole 946 connects.Bent axle 170 is stretched out from engine 110 by the groove 1038 of pump assembly 1020.

When bent axle 170 stretches into groove 1038, bent axle 170 is attached crankshaft seal part 606.Crankshaft seal part 606 prevents the lubricant of any oil that may be utilized or other type from sewing groove 1038 by bent axle 170.In alternative embodiments, removable crankshaft seal part 606 flows into groove 1038 to allow the lubricant of oil or other type.

Bolt 604 is used for this pump assembly 1020 to be connected to engine bottom 930, and bolt inserts pump manifold 1039 and enters pump assembly installing hole 946.That pump assembly installing hole 946 is screw thread and be configured to bolt 604 suitable.Although not shown, the sealing of packing ring or other type all may be used on engine bottom 930, thus between engine bottom 930 and pump assembly 1020, forms pressurization when being connected by bolt 604.

When pump assembly 1020 is connected to engine bottom 930, bent axle 170 matches with balance 612.Before inserting balance 612, two lower thrust-bearing seat rings 608 and lower thrust-bearing frame 610 are placed on bent axle 170.Thrust axis bolster 610 can hold ball bearing so that the motion of balance 612.

One group of up-thrust bearing seat ring 616 and up-thrust bearing frame 618 above balance 612.Spring retainer 622 is fixed into position by spring fixed clamp 620.Pump piston 624 extends through piston return spring 626.Oil sealing 628 is attached at the bottom of piston 624.Oil sealing 628 guarantees to be contained in oil in pump assembly 1020 or other type of lubricant holds the pump manifold 630 that can not bleed.Pump manifold 1030 to be connected on engine bottom 930 by bolt 1050 and to keep the parts of pump assembly 1020 to be in suitable position.

When engine 110 operates, bent axle 170 rotates, and impels balance 612 to rotate.Subsequently, the rotation of balance 612 impels piston 624 to move in upper and lower mode.The motion of piston 624 impels the generation of pressure and then puts on the water entering pump manifold 1030, and is guided to subsequently outside high-pressure outlet 122.

As previously mentioned, by pump assembly 1020 is integrated into engine bottom 930, the efficiency of pressure washer 100 can be improved.Make the parts of pump assembly closer to engine 110 and bent axle 170, reduce the length of bent axle 170 and can power transfer efficiency be increased.Pump assembly is integrated into engine bottom 930 to go back authorized pressure cleaning machine manufacturer and produce a kind of less power washer, even if can transmit can not more by force but at least identical charging fluid for it.

Figure 11 and 12 shows a kind of pressure washer 1100 with the horizontal-shaft engines 1110 employing engine bottom 1130 according to yet another embodiment of the invention.As shown in figure 11, the pump assembly of pressure washer 1100 is removed, to illustrate the interior views of groove 1138.Be similar to the pressure washer 100 of Fig. 1, wall 1136 around bent axle radially and leave engine bottom 1130 and extend.

Can see from this view, silencer 1118 is positioned at the sidepiece of engine 1110.Spark plug is loaded into the top of cylinder, and cylinder is a part for engine block 1140.Fuel enters cylinder from petrol tank 1112 via carburetor, thus is easily ignited by the spark plug.Exhaust from internal combustion engine is discharged to outside cylinder and silencer 1118 by way of exhaust valve then.In addition, machine oil spatters at engine 1110 inner, and oil dipstick 1111 can be used to the machine oil level determined in body 1140.

The bottom of body 1140 is bottoms 1130 of engine.Upon assembly, pump assembly is connected on engine bottom 1130.In another exemplary embodiment, engine bottom 1130 can be made up of cast aluminium and be that the bottom of body 1140 provides seal.Compartment of terrain can be a packing ring 1131 between body 1140 and engine bottom 1130.This engine bottom 1130 also can have the fin 1142 be positioned at outside wall 1136.In the embodiment of Figure 11, fin 1142 can be placed on wall 1136.In another embodiment, fin 1142 may extend to the outward flange of engine bottom 1130.

Claims (11)

1. a monoblock type pressure washer, comprising:

Engine, this engine comprises engine bottom, described engine bottom has the groove formed by continuous wall, continuous wall stretches out from engine bottom, this engine also comprises bent axle, this bent axle stretches into and is terminated in groove, and wherein, cooling fin stretches out from described continuous wall and extends the edge of described engine bottom;

Pump assembly, this pump assembly comprises the pumping mechanism driven by balance, this pump assembly is attached directly to engine bottom and covers and stretch into groove, described balance is configured to directly connect with described bent axle pumping mechanism is rotated, this pressurizes to the water entering described pump assembly then, and this pressure (hydraulic) water is guided out the high-pressure outlet of described pump assembly, wherein, described engine bottom and described pump assembly share lubricating fluid.

2. pressure washer as claimed in claim 1, wherein this engine is vertical shaft engine.

3. pressure washer as claimed in claim 1, wherein this engine is horizontal-shaft engines.

4. pressure washer as claimed in claim 1, wherein this engine bottom is made of aluminum.

5. pressure washer as claimed in claim 1, wherein this pumping mechanism is inline piston pumps.

6. pressure washer as claimed in claim 1, wherein this continuous wall is cylindrical.

7., for a monomer engine bottom for engine-driven pressure washer, comprising:

Base, cooling fin extends along described base, and;

Be connected in the continuous wall on base, described continuous wall stretches out from base, and described continuous wall forms groove, described groove has bottom, described bottom extends into described base, and described bottom also comprises bent axle perforate, and described bent axle perforate allows bent axle stretch out through it and be terminated at wherein;

Wherein said groove is suitable for installation pump assembly, pump assembly to be inserted in described groove and to be attached directly to described engine bottom, lubricating fluid is shared to make described engine bottom and described pump assembly, this pump assembly also comprises the pumping mechanism for running described pump assembly, wherein, described pumping mechanism is directly connected to described bent axle in described groove.

8. monomer engine bottom as claimed in claim 7, wherein this continuous wall is cylindrical.

9. monomer engine bottom as claimed in claim 7, wherein this engine bottom is made of aluminum.

10. monomer engine bottom as claimed in claim 7, wherein this pumping mechanism is inline piston pumps.

11. monomer engine bottoms as claimed in claim 7, wherein this pumping mechanism is swing-plate type pump.