CN102575520A

CN102575520A - Compressor

Info

Publication number: CN102575520A
Application number: CN201080046643XA
Authority: CN
Inventors: G.格尔岑; M.R.尼姆塞克; B.A.库什纳; W.A.努尔
Original assignee: Invacare Corp
Current assignee: Invacare Corp
Priority date: 2009-08-17
Filing date: 2010-08-17
Publication date: 2012-07-11
Also published as: CA2772244A1; WO2011022361A1; US20110038740A1; AU2010284357A1; EP2467578A1

Abstract

A compressor includes a cylinder assembly in a V4 configuration. A crankshaft of the compressor has a main shaft and first and second eccentric bodies. The two eccentric bodies drive four pistons.

Description

Compressor

The cross reference of related application

The application is based on application No. 61/234,330 that submitted on August 17th, 2010 and the preference that requires this application, and the disclosure of this application is attached to this paper by reference.

Technical field

The present invention relates to the field of gas compressor.

Background technique

Oxygen has many important medical purposes, for example comprises the patient who helps to suffer from congestive heart failure or other diseases.The more oxygen of oxygen that the oxygen of supply allows the patient to receive than in ambient air, to exist.The system and method that is used to transmit this oxygen generally includes the compressor as parts.For example; United States Patent(USP) No. 5,988,165 disclose the purposes of in-line arrangement (inline) compressor that is used for this purpose; United States Patent(USP) No. 6; 923,180 disclose the purposes of the radial compressor that is used for this purpose, and U.S. Patent Application Publication No. 2007/0065301 discloses the in-line arrangement compressor that is used for this purpose.United States Patent(USP) No. 5,988,165 are attached to this paper by reference in full with No. 6,923,180 and U.S. Patent Application Publication No. 2007/0065301.

Summary of the invention

The application discloses the mode of execution of gas compressor, for example is suitable for the compressor of compressed oxygen.In an illustrative embodiments, the compressor that is used for pressurized gas comprises first, second, third and four-cylinder.The central axis of first cylinder is parallel to the central axis of second cylinder usually, and the central axis of the 3rd cylinder is parallel to the central axis of four-cylinder usually.The axis of first cylinder and second cylinder is angled with respect to the axis orientation of the 3rd cylinder and four-cylinder, to form the V4 cylinder configuration.The first, second, third and the 4th piston be arranged on first, second, third and four-cylinder in.Only two eccentric drive bodies that bent axle has main shaft and drives the first, second, third and the 4th piston.

In an illustrative embodiments, compressor comprises bent axle, and said bent axle has main shaft, said main shaft comprise said crankshaft rotating around crankshaft center line.Said bent axle comprises the first and second circular drives bodies, and the said first and second circular drives bodies extend radially outwardly and eccentric with crankshaft center line from crankshaft center line.The first circular connecting rod drives body and drives body in abutting connection with the second circular connecting rod; Two driveshafts or connecting rod are rotatably connected to that the first circular connecting rod drives body and the second circular connecting rod drives each in the body, make the first and second circular con-rod onlys make four driveshafts or connecting rod to-and-fro motion around the rotation of crankshaft center line.

Description of drawings

Combine accompanying drawing through reading following detailed description, other characteristics of the present invention and advantage will be obvious for those skilled in the art, in the accompanying drawings:

Fig. 1 is the perspective view according to the compressor of illustrative embodiments;

Figure 1A is second perspective view of compressor as shown in Figure 1, shows the bent axle and the driveshaft of compressor;

Figure 1B is roughly along the sectional view of planar interception shown in the line 1B-1B among Fig. 1;

Fig. 2 is the cross-sectional perspective view along the planar interception shown in the line 2-2 among Fig. 1;

Fig. 2 A is the sectional view along the planar interception shown in the line 2-2 among Fig. 1;

Fig. 3 is the cross-sectional perspective view along the planar interception shown in the line 3-3 among Fig. 1;

Fig. 3 A is the sectional view along the planar interception shown in the line 3-3 among Fig. 1;

Fig. 4 is the perspective view of the assembly of bent axle, driveshaft and piston;

Fig. 5 is the perspective exploded view of assembly as shown in Figure 4;

Fig. 6 A is the perspective view of first mode of execution of bent axle;

Fig. 6 B is the cross-sectional perspective view along the planar interception shown in the line 6B-6B among Fig. 6 A;

Fig. 6 C is the view along the line 6C-6C intercepting among Fig. 6 A;

Fig. 6 D is the view along the line 6D-6D intercepting among Fig. 6 C;

Fig. 7 A is the perspective view of second mode of execution of bent axle;

Fig. 7 B is the cross-sectional perspective view along the planar interception shown in the line 7B-7B of Fig. 7 A;

Fig. 7 C is the view along the line 7C-7C intercepting among Fig. 7 A;

Fig. 7 D is the view along the line 7D-7D intercepting among Fig. 7 C;

Fig. 8 A is the cross-sectional perspective view of 2-2 intercepting along the line, and wherein parts are removed to describe cylinder and piston assembly;

Fig. 8 B is second perspective view of Fig. 8 A, and wherein parts are decomposed to describe the assembling of the piston in the cylinder;

Fig. 9 is the sectional view of first cylinder head assembly of a part that forms the compressor of Fig. 1;

Figure 10 is the sectional view of second cylinder head assembly of a part that forms the compressor of Fig. 1;

Figure 11 A is the perspective view that limits the flow path of spacer;

Figure 11 B is the cross-sectional perspective view along the line 11B-11B intercepting among Figure 11 A;

Figure 12 is the schematic representation of first example system of the present invention, and this first example system comprises the compressor that is used to provide the rich oxygen containing gas that supplies patient's use; And

Figure 13 is the schematic representation of second example system of the present invention, and this second example system comprises the compressor that is used to provide the rich oxygen containing gas that supplies patient's use.

Embodiment

As used herein; When one or more component representations for connected, combined, fixing, connection, attached or when otherwise interconnecting, this interconnection can be the direct interconnection between the parts or can be for example through utilizing the indirect interconnection of one or more intermediate members.As used herein equally, term " member ", " parts " or " part " should be not limited to single structure member, parts or element, and can comprise the assembly of a plurality of parts, a plurality of member or a plurality of elements.

Fig. 1 shows the illustrative embodiments of compressor 10.Compressor 10 comprises cylinder assembly 12 and the first and second cylinder head 110A, 110B.Cylinder assembly 12 can adopt wide in range various multi-form.In example as shown in Figure 1, cylinder assembly comprises base 13, the first sleeve 14A, the second sleeve 14B, the 3rd sleeve 14C and quadruplet tube 14D.Referring to figs. 2 and 3; In the exemplary embodiment; The first sleeve 14A comprises lower member 20A and upper member 30A (Fig. 2); Second sleeve comprises lower member 20B and upper member 30B (Fig. 2), and the 3rd sleeve 14C comprises lower member 20C and upper member 30C (Fig. 3), and quadruplet tube 14D comprises lower member 20D and upper member 30D (Fig. 3).Sleeve can adopt wide in range various multi-form.Can use any structure that cylinder is provided.For example, one or more in the cylinder can form only single part.First and/or second sleeve and/or third and fourth sleeve can be formed by single-piece or monolithic.

Each all has opening 26A-26D referring to figs. 2 and 3, lower

sleeve portion parts

20A, 20B, 20C, 20D.Opening 26A-26D can adopt various form.One or more among the opening 26A-26D can be structured as guiding element.In addition, among the opening 26A-26D one or more can with other openings 26A-26D in one or morely have an identical size.In described mode of execution, opening 26A is adjacent to opening 26B and becomes in upright arrangement with this opening 26B, and guide openings 26C is adjacent to opening 26D and become in upright arrangement with this opening 26D.With reference to Figure 1B, in the exemplary embodiment, the angle θ between

guide openings

26A, 26B and guide openings 26C, the 26D is about 90 degree.For example, in an illustrative embodiments, angle θ can be the angle in the scope of 80 and 100 degree, for example is the angle between 85 and 95 degree.

Referring to figs. 2 and 3, upper sleeve parts 30A-30D comprises opening or cylinder 36A-36D.Cylinder 36A-36D can adopt various form.It is in upright arrangement that cylinder 36A-36D becomes with opening 26A-26D.Thus, predetermined angle θ between

cylinder

36A, 36B and cylinder 36C, 36D.Thus, cylinder 36A-36D has roughly " V4 " structure.That is to say that the central axis 37A of

cylinder

36A, 36B, 37B form " V " shape (seeing Figure 1B) with respect to central axis 37C, the 37D of cylinder 36C, 36D.Can see that from Fig. 1, Fig. 2 and Fig. 3 in described mode of execution, each all is axially offset to one another central axis 37A-37D.

Referring to figs. 2 and 3, compressor comprises a plurality of piston 40A-40D, these pistons 40A-40D and cylinder 36A-36D have one-to-one relationship.First piston 40A is positioned among the first cylinder 36A and is supported and is used in the first cylinder slippage (to-and-fro motion) (Fig. 2).The second piston 40B is positioned among the second cylinder 36B and is supported and is used in the second cylinder slippage (to-and-fro motion) (Fig. 2).The 3rd piston 40C is positioned among the 3rd cylinder 36C and is supported and is used in the 3rd cylinder slippage (to-and-fro motion) (Fig. 3).The 4th piston 40D is positioned among the four-cylinder 36D and is supported and is used in four-cylinder slippage (to-and-fro motion) (Fig. 3).

Cylinder 36A-36D and respective pistons 40A-40D have diameter change, and therefore the stroke of each piston 40A-40D in its respective cylinder causes gas discharge capacities different between the stroke of each piston.Piston 40A-40D design with the stroke that differs from one another can be implemented in the compressor 10 alternatively.If the stroke of piston differs from one another, one or more in the piston can have identical diameter with one or more other pistons so.In described mode of execution, the first cylinder 36A has maximum diameter, the second cylinder 36B is littler than first cylinder, the 3rd cylinder 36C is littler, and four-cylinder 36D is minimum.In other embodiments, compressor can have more than four cylinder or be less than four cylinder.

As stated, upper sleeve 30A-30D engages with lower sleeve portion 20A-20D.Opening 26A-26D in the pilot sleeve of bottom aligns with cylinder 36A-36D in the upper cylinder sleeve.Compressor 10 can comprise the one or more guiding elements that are slidably disposed among the opening 26A-26D.Referring to figs. 2 to Fig. 4, compressor comprises the guiding element 42B-42D that is slidably disposed among the opening 26B-26D, and in the embodiment shown, in the first opening 26A, does not comprise guiding element.Yet guiding element can be included among whole opening 26A-26D or can comprise any amount of guiding element.Shown in guiding element 42B-42D drive with connecting rod 52B-52D by bent axle 50, as mentioned below.Shown in connecting rod 52B-52D each include respectively the first ring portion 53B-53D and the second ring portion 55B-55D (seeing Fig. 2 and Fig. 3) that is connected to bent axle 50 and guiding element 42B-42D by pivot.

In the embodiment shown, in opening 26A, guiding element is not set.First piston 40A is fixed for moving with driveshaft or connecting rod 52A.This structure is called as " waving piston ", and this is because when piston 40A is mobile in cylinder 36A, piston 40A is fixed to connecting rod 52A causes the inclination of a tittle or wave.Alternatively, first piston 40A can be pivotably connected to connecting rod 52A in a usual manner.In this embodiment, first piston 40A will slide in cylinder 36A and not have significant inclination or wave.Shown connecting rod or driveshaft 52A comprise the ring portion 53A that is used to be rotatably connected to bent axle 50.

With reference to figure 2A, shown in guiding element 42B comprise 43B of first portion and second portion 44B.The 43B of first portion of guiding element 42B is arranged in opening 26B and is supported and is used for carrying out slippage (to-and-fro motion) at this opening.The second portion 44B of guiding element 42B is arranged in cylinder 36B and is supported and is used for carrying out slippage (to-and-fro motion) at cylinder 36B.In the mode of execution shown in Fig. 2 and Fig. 2 A, the second piston 40B separates with guiding element 42B and is not attached to this guiding element.In this embodiment, during compression stroke (shown in the arrow among Fig. 2 A 45), guiding element 42B forces end surfaces 32B or the lid end of the second piston 40B towards cylinder 36B.During charging stroke (shown in the arrow among Fig. 2 A 46), the air pressure that is applied to cylinder 36B by first piston 40A forces end surfaces 34B or the crankshaft end of the second piston 40B towards cylinder.In the exemplary embodiment, during both, the second piston 40B keeps contacting with the second portion 44B of guiding element 42B at whole compression stroke and whole charging stroke.In another embodiment, the second piston 40B is fixed or connects into guiding element 42B and moves.

With reference to figure 3A, shown in guiding element 42C comprise 43C of first portion and second portion 44C.The 43C of first portion of guiding element 42C is arranged in opening 26C and is supported and is used for carrying out slippage (to-and-fro motion) at this opening.The second portion 44C of guiding element 42C is arranged in cylinder 36C and is supported and is used for carrying out slippage (to-and-fro motion) at cylinder 36C.In mode of execution as shown in Figure 3, the 3rd piston 40C separates with guiding element 42C and is not attached to this guiding element.In this embodiment, during compression stroke (shown in the arrow among Fig. 3 A 45), guiding element 42C forces end surfaces 32C or the lid end of the 3rd piston 40C towards cylinder 36C.During charging stroke (shown in the arrow among Fig. 3 A 46), the air pressure that is applied to cylinder 36C by the second piston 40B forces end surfaces 34C or the crankshaft end of the 3rd piston 40C towards cylinder.In the exemplary embodiment, during both, the 3rd piston 40C keeps contacting with the second portion 44C of guiding element 42C at whole compression stroke and whole charging stroke.In another embodiment, the 3rd piston 40C is fixed or connects into guiding element 42C and moves.

With reference to figure 3A, shown in guiding element 42D comprise 43D of first portion and second portion 44D.The 43D of first portion of guiding element 42D is arranged in opening 26D and is supported and is used for carrying out slippage (to-and-fro motion) at this opening.The second portion 44D of guiding element 42D is arranged in cylinder 36D and is supported and is used for carrying out slippage (to-and-fro motion) at cylinder 36D.In the mode of execution shown in Fig. 3 A, the 4th piston 40D separates with guiding element 42D and is not attached to this guiding element.In this embodiment, during compression stroke (shown in the arrow among Fig. 3 A 45), guiding element 42D forces end surfaces 32D or the lid end of the 4th piston 40D towards cylinder 36C.During charging stroke (shown in the arrow among Fig. 3 A 46), the air pressure that is applied to cylinder 36D by the 3rd piston 40C forces end surfaces 34D or the crankshaft end of the 4th piston 40D towards cylinder.In the exemplary embodiment, during both, the 4th piston 40D keeps contacting with the second portion 44D of guiding element 42D at whole compression stroke and whole charging stroke.In another embodiment, the 4th piston 40D is fixed or connects into guiding element 42D and moves.

Referring to figs. 2 and 3, bent axle 50 (will be described in more detail below) is supported to rotate in first and

second bearings

62,68 around crankshaft center line X.First and

second bearings

62,68 are installed on this base 13 by first and second bearing supports 54 and 56 of the every end that is positioned at compressor base frame 13.

With reference to figure 4, bent axle 50 is formed for the part of the driving mechanism 79 of the compressor 10 that driven plunger 40A-40D moves in cylinder 36A-36D.Driving mechanism 79 comprises bent axle 50, driveshaft or connecting rod 52A-52D and guiding element 42B-42D.Yet, can use polytype different driving mechanism.In other embodiments, bent axle can otherwise be connected to or be connected to piston 40A-40D, for example uses connecting rod or driveshaft but does not have guiding element.

Fig. 6 A-6D and Fig. 7 A-7D have described two mode of executions of bent axle 50.In the mode of execution shown in Fig. 6 A-6D and Fig. 7 A-7D, bent axle 50 forms (or welded together to form single-piece) by single-piece.Yet bent axle 50 can form by many, and these many are assembled into together and can be disassembled.

Bent axle 50 comprises main shaft 70, and this main shaft has the substantial cylindrical structure that is limited the cylindrical outer surface that centers on the crankshaft center line X of compressor 10.In the operation period of compressor 10, bent axle 50 rotates around crankshaft center line X.In the embodiment shown, main shaft 70 has the

opposed end

78 and 80 of band external screw-thread.With reference to figure 1-3, main shaft 70 is received and is bearing in first and

second bearings

62 and 68.

With reference to figure 6A-6D and Fig. 7 A-7D, in the embodiment shown, bent axle 50 comprises that also the first and second circular connecting

rods drive body

84A, 84B, and these circular connecting rods drive bodies and extend radially outwardly and eccentric with respect to crankshaft center line X from crankshaft center line X.In the embodiment shown,

body

84A, 84B are mutually the same for the ease of manufacturing.Yet

body

84A, 84B can have different size, for example make body 84A that the stroke different with body 84B is provided.With reference to figure 6D and Fig. 7 D, each among eccentric body 84A, the 84B all has cylindrical structure, and wherein each cylindrical body has the crankshaft center line of being parallel to X but from the isolated central axis 85A of this crankshaft center line X, 85B.In the embodiment shown, central axis 85A and central axis 85B are provided with same distance d1 away from crankshaft center line X, and between central axis 85A, crankshaft center line X and central axis 85B, form about 180 angle beta (seeing Fig. 6 D).Yet

body

84A, 84B can be by any way with respect to the crankshaft center line location, to realize being coupled to the crank of these bodies or the desired motion of driveshaft 54A-54D.The diameter of in the embodiment shown, being installed to the main shaft part 70 of

bearing

62,68 drives the diameter of

body

84A, 84B less than circular connecting rod.

With reference to figure 4, in the exemplary embodiment, the first and second circular connecting

rods drive body

84A, 84B is that the only connecting rod of bent axle drives body.In this embodiment, each connecting rod drives body and all drives two connecting rods or driveshaft 54A-54D, as will be hereinafter in greater detail.Yet, can comprise that any amount of connecting rod drives body.For example, can comprise that to each connecting rod or driveshaft a connecting rod drives body.In addition, one or more connecting rods drive body can drive a connecting rod or driveshaft, and one or more connecting rod driving body can drive two or more connecting rods or driveshaft.

Connecting

rod drives body

84A, 84B can adopt various multi-form.In the mode of execution shown in Fig. 6 A-6D and Fig. 7 A-7D, connecting

rod drives body

84A, 84B, and each all forms single continuous cylinder.Shown in continuous cylinder and main shaft 70 integrally form.In another embodiment, connecting rod driving body is two independent continous cylindrical members that form assembling with main shaft 70.Two independent continous cylindrical members that form can be identical maybe can being of different sizes so that different strokes to be provided.

In the mode of execution shown in Fig. 6 A-6D, first connecting rod drives body 84A and drives body 84B in abutting connection with second connecting rod.First connecting rod driving body 84A can drive body 84B with second connecting rod and integrally form, and perhaps connecting

rod drives body

84A, 84B can be the separating component that is fixed to together.In the example shown in Fig. 6 A-6D, first connecting rod drives body 84A and only is connected to this second connecting rod driving body 84B at the place, overlap region that itself and second connecting rod drive between the body 84B.

In the mode of execution shown in Fig. 7 A-7D, first connecting rod drives body 84A and is connected to this second connecting rod driving body 84B by the disk 86 that is arranged between first connecting rod driving body 84A and the second connecting rod driving body 84B.Connecting

rod drives body

84A, 84B can be fixed to disk 86 separated from one another and then, and perhaps connecting rod driving body 84A, disk 86 and connecting rod driving body 84B can integrally form.In the mode of execution shown in Fig. 7 A-7D, disk 86 centers on crankshaft center line X.With reference to figure 7D, shown in disk have excircle 87, this excircle is positioned at the radially outer that first and second connecting rods drive the excircle of

body

84A and 84B.

Shown in Fig. 2 and Fig. 2 A, connecting rod 52A is connected first piston 40A and first offset connecting rod drives between the body 84A, and connecting rod 52B is connected guiding element 42B (it drives the second piston 40B) and second offset connecting rod drives between the body 84B.In the embodiment shown, ring 53A is provided with so that connecting rod 52A is rotatably connected to body 84A around body 84A.Can between ring 53A and body 84A, bearing be set.Ring 53B is provided with so that connecting rod 52B is rotatably connected to body 84B around body 84B.Can between ring 53B and body 84B, bearing be set.Pin 90B extends through ring portion 55B so that guiding element 42B is connected with connecting rod 52B pivotly.

With reference to figure 3 and Fig. 3 A; Connecting rod 52C is connected guiding element 42C (it drives the 3rd piston 40C) and first offset connecting rod drives between the body 84A, and connecting rod 52D is connected guiding element 42D (it drives the 4th piston 40D) and second offset connecting rod drives between the body 84B.In the embodiment shown, ring 53C is provided with so that connecting rod 52C is rotatably connected to body 84A around body 84A.Can between ring 53C and body 84A, bearing be set.Pin 90C extends through ring portion 55C so that guiding element 42C is pivotably connected to connecting rod 52C.Ring 53D is provided with so that connecting rod 52D is rotatably connected to body 84B around body 84B.Can between ring 53D and body 84B, bearing be set.Pin 90D extends through ring portion 55D so that guiding element 42D is connected with connecting rod 52D pivotly.

First offset connecting rod drives body 84A and drives first piston 40A and the 3rd piston 40C.With reference to Figure 1B, because " V " shape of piston structure, along with the rotation of bent axle, the motion of first piston 40A is followed or is lagged behind in the motion of the 3rd piston 40C with the angle θ (about 90 degree in the embodiment shown) of " V " shape.Second offset connecting rod drives body 84B and drives the second and the 4th piston 40B, 40D.Because first and second connecting rods drive body 84A, the 84B combined angular distances beta about crankshaft center line X; Rotation along with bent axle; The motion of first piston 40A is followed or is lagged behind in the motion of the second piston 40B with the angle (about 180 degree in the embodiment shown) of combined angular distances beta.Because " V " shape of piston structure, along with the rotation of bent axle, the motion of the second piston 40B is followed or is lagged behind in the motion of the 4th piston 40D with the angle θ (about 90 degree in the embodiment shown) of " V " shape.

Main shaft 70 causes the to-and-fro motion of piston 40A-40D in cylinder 36A-36D around the rotation of crankshaft center line X.The driving pulley (not shown) can be positioned on one of end 78 of main shaft 70, is beneficial to driving torque is applied to main shaft 70, thereby makes piston 40A-40D to-and-fro motion.

As shown in Figure 1, compressor 10 comprises cylinder head assembly 100.Cylinder head assembly 100 comprises the first cylinder head 110A and the second cylinder head 110B, and this second cylinder head 110B utilizes a plurality of fastening pieces to be secured to cylinder assembly 12.In the embodiment shown, compressor 10 comprises fastening piece, for example extends through the hole among cylinder head 110A, the 110B and is threaded onto the bolt 102 in the base 13.When bolt 102 was tightened down, cylinder head 110A was clamped to the first and

second sleeve

14A, 14B, and cylinder head 110B is clamped to the third and

fourth sleeve

14C, 14D is last.

With reference to figure 8A and Fig. 8 B, in order to repair and to safeguard, hold down the fastening piece 102 (Fig. 1) that covers 110A and/or 110B through removing, each independently piston 40B-40D can be removed from cylinder 36B-36D.The second cylinder 36B and piston 40B are described in Fig. 8 A and Fig. 8 B, but other pistons and cylinder can be repaired or safeguard in an identical manner.In case fastening piece 102 is removed, lid 110A, cylinder 36B just can be removed and separate with piston 40B, shown in Fig. 8 B.This structure allows to change or safeguard piston 40B and/or cylinder 36B and need not remove driveshaft or connecting rod 52B from bent axle 50.

Like Fig. 1, Fig. 9 and shown in Figure 10, each

cylinder head

110A, 110B form single-piece by metal.In the embodiment shown, each

cylinder head

110A, 110B have the rectangular configuration that comprises downside surface 112.With reference to figure 9 and Figure 10, the length that component room 114 is extended each cylinder head 110A, 110B.In the embodiment shown, component room 114 each all have the cylindrical structure that centers on axis 116.Each component room 114 has inlet end 118 and outlet end 120.The inlet end 118 of the first cylinder head 110A forms the inlet of compressor 10.Outlet end 120 forms the outlet of the first cylinder head 110A.The inlet end 118 of the second cylinder head 110B forms the inlet of the second lid 110B.With reference to figure 1, conduit 119 is connected to the outlet of the first lid 110A inlet of the second lid 110B.The threaded outlet end 120 of the second lid 110b forms the outlet of compressor 10.

With reference to figure 9 and Figure 10, cylinder head 110a, 110b have a plurality of inflation port 122A-122D that between component room 114 and downside surface 112, extend.In the embodiment shown, the quantity of inflation port 122A-122D equals the quantity of cylinder 36A-36D in the compressor 10.With reference to figure 2A and Fig. 3 A, the fluid that inflation port 122A-122D sets up between cylinder 36A-36D and the component room 114 is communicated with.In the embodiment shown, single inflation port 122 is with cylinder 36 each is relevant.Therefore, the first cylinder 36A has the first inflation port 122A, and the second cylinder 36B has the second inflation port 122B, and the 3rd cylinder 36C has the 3rd inflation port 122C, and four-cylinder 36D has the 4th inflation port 122D.

A plurality of positioning parts are in the component room 114 of cylinder head 110A, 110B.These parts are guiding fluid stream between the outlet 120 of inlet 118, cylinder 36A-36D and the second lid 110B of the first lid 110A.These parts comprise: be used for a plurality of safety check 130A-130F that control air flowed into and flowed out each cylinder 36A-36D; And be used for safety check is positioned at chamber 114 and stops gas in flow around the safety check a plurality of parts or the structure of (that is, around safety check, leaking).In an illustrative embodiments, the parts that are used to locate safety check are spacer blocks and are configured to guide air between safety check, to flow.Safety check can also spaced apart in every way rather than use spacer block.For example, one or more safety check can be threadingly attached in the component room 114, and component room can comprise stop surface etc.Can use any way of location safety check.In the accompanying drawings, not shown be used for respect to the inlet 118 of cylinder head 110A, 110B and export 120 the position of safety check is set structure.Yet, it being understood that and can use spacer block or other positioning devices with safety check and spacer block shown in the location as shown.For example, U.S. Patent Application Publication No. 2007/0065301 shows the spacer block that entrance and exit connector 180,196 can engage the position that is used for fixing valve.The parts that are arranged in component room can also comprise a plurality of Sealings that are used to prevent the leakage around safety check.

Like Fig. 9 and shown in Figure 10, the safety check 130A-130F that is arranged in

cylinder head

110A, 110B is preferably mutually the same.Can use except shown in the safety check of other types.With reference to figure 9 and Figure 10, the safety check 130A-130F shown in each comprises valve body 132, and this valve body has the substantial cylindrical structure that has central chamber 134.End wall 136 is positioned in the upstream extremity place of valve body 132.End wall 136 has central opening 138.The tract of valve body 132 is uncovered.Each includes the movable valve member that is ball 146 forms safety check 130A-130F.The size of ball 146 is selected such that when the end wall 136 of ball bond valve body 132, this ball is closed this opening 138.When ball 146 during away from end wall 136, fluid stream can pass this safety check.Spring is biased into this ball and engages end wall 136 to close this valve.Other details of acceptable safety check are described in U.S. Patent Application Publication No. 2007/0065301.

Spacer block 150A-150D is positioned in the chamber 114 and safety check 130A-130F is spaced apart.Figure 11 A and Figure 11 B show spacer block 150B-150D.Spacer block 150B-150D is preferably mutually the same.Each spacer block 150B-150D is a round metal cylindricality piece, and its external diameter is substantially equal to the internal diameter of the component room 114 among cylinder head 110A, the 110B dimensionally.Spacer block 150B-150D has upstream 152 and downstream end 154.Yet in the embodiment shown, end 152 and 154 is identical, because spacer block is about midplane 153 symmetries.

In the mode of execution shown in Figure 11 A and Figure 11 B, spacer block 150 has the central opening 155 of minor diameter, and this central opening extends the length of spacer block between upstream 152 and downstream end 154.This symmetrical end 152,154 includes passage 158 that extends radially outwardly from central opening 155 and the exterior channels 160 that is communicated with passage 158 fluids.The result is, between the central opening 155 of spacer block 150 and exterior channels 160, sets up fluid and is communicated with.

With reference to figure 9, spacer block 150A is shorter than spacer block 150B-150D.Spacer block 150A is the cylindrical metal piece, and its external diameter is substantially equal to the internal diameter of the component room 114 in the cylinder head 110 dimensionally.Spacer block 150A has the upstream and the downstream end 164,166 of symmetry.

The length between upstream 164 and downstream end 166 that the central opening 170 of minor diameter extends this short spacer block.Spacer block 150A also has inner passage 172, and this inner passage extends radially outwardly and ends at the groove 174 on the outer surface that is arranged in spacer block 150 from this central passage 170.The result is, between the upstream of spacer block 150A and downstream end 164,166 and exterior channels 174, sets up fluid and is communicated with.

Like Fig. 9 and shown in Figure 10, go into opening connector 180 and be secured in the upstream of each cylinder head 110A, 110B.The inlet connector has the fluid inlet channel 182 that is communicated with component room.Go out in the downstream end that opening connector 196 is secured to each cylinder head 110A, 110B.Go out opening connector 196 and have the fluid output passage 198 that is communicated with component room 114.Parts are positioned in the component room 114 of

cylinder head

110A, 110B.

Inlet non-return valve 130E is positioned in the component room 114 of the first cylinder head 110A.The inlet opening 138 of inlet non-return valve 130E is communicated with the inlet 118 of compressor 10.In the exemplary embodiment, can between safety check and component room 114, Sealing be set.

Spacer block 150A is positioned in the component room 114 of cylinder head 110, makes the upstream of spacer block 154A engage the downstream end of inlet non-return valve 130E.Exterior channels 174 on the spacer block 162 is alignd with the first inflation port 122A of cylinder head 110A.The result is between the component room 114 and the first cylinder 36A, can set up fluid and be communicated with (seeing Fig. 2 A).

Be positioned in the component room 114 of cylinder head 110A with reference to figure 9, the second safety check or the first cylinder safety check 130A.The upstream of the second safety check 130A engages the downstream end of spacer block 150A.The inlet opening 138 of the second safety check 130A aligns with the central passage 170 among the spacer block 150B.Between the spacer block 150A and the second safety check 130A, optional Sealing is provided.

With reference to figure 9, spacer block 150B is positioned in the component room 114 of cylinder head 110A.The upstream of spacer block 150B engages the downstream end of safety check 130A.The outlet of the central opening 155 alignment safety check 130A of spacer block 150B.Align with the second inflation port 122B among the cylinder head 110A in the exterior channels 160 at the downstream end place of the second spacer block 150B.The result is, between component room 114 and the second cylinder 36B, sets up fluid and is communicated with (seeing Fig. 2 A).

Be positioned in the component room 114 of cylinder head 110A with reference to figure 9, the three safety check or the second cylinder safety check 130B.The upstream of safety check 130B engages the downstream end of spacer block 150B.The opening 138 of safety check 130B aligns with the central passage 155 among the spacer block 150B.Between spacer block 150B and safety check 130B, form optional sealing.

With reference to Figure 10, the 4th optional safety check or the second lid inlet non-return valve 130C are positioned in the component room 114 of the second cylinder head 110B.The inlet opening 138 of inlet non-return valve 130C is communicated with the inlet 118 of the second lid 110B.In the exemplary embodiment, can between safety check and component room 114, Sealing be provided.

Spacer block 150C is positioned in the component room 114 of cylinder head 110B.The upstream of spacer block 150C engages the downstream end of safety check 130C.The central opening 155 of spacer block 150C aligns with the central opening of safety check 130C.The exterior channels 160 of spacer block 150C is alignd with the inflation port 122C of cylinder head 110B.The result is, between component room 114 and the 3rd cylinder 36C, can set up fluid and be communicated with (seeing Fig. 3 A).

The 5th safety check or the 3rd cylinder safety check 130D are positioned in the component room 114 of cylinder head 110B.The upstream of safety check 130D engages the downstream end of spacer block 150C.The opening 138 of safety check 130D aligns with passage 155 among the spacer block 150C.Can between spacer block 150C and safety check 130D, Sealing be provided.

Spacer block 150D is positioned in the component room 114 of cylinder head 110B.The upstream of spacer block 150D engages the downstream end of the 3rd cylinder safety check 130D.The central opening 156 of spacer block 150D aligns with the central chamber of safety check 130D.Align with the 4th inflation port 122D in the cylinder head 110 in the exterior channels 160 at the downstream end place of the 4th spacer block 150D.The result is between component room 114 and four-cylinder 36D, can set up fluid and be communicated with.

The 6th safety check or four-cylinder safety check 130F are positioned in the component room 114 of cylinder head 110B.The upstream of four-cylinder safety check 130F engages the downstream end of spacer block 150D.The opening 138 of safety check aligns with the central passage 155 of spacer block 150D.Between spacer block 150D and safety check 130D, optional Sealing is set.

Go out the downstream end that opening connector 196 is fixed to cylinder head 110B.Go out opening connector 196 and have fluid output passage 198, this fluid output passage is communicated with component room 114 fluids of cylinder head 110B.In the embodiment shown, whole safety check 130A-F of compressor 10 are positioned among cylinder head 110A, the 110B.

Refer again to Fig. 2 A and Fig. 3 A, when compressor 10 operations, air allows to enter into this compressor through the opening connector 180 of going into of the first lid 110A.Air stream is gone into opening connector 180 and is flow to inlet non-return valve 130E through the first lid 110A's.

When compressor 10 was in its circuit first cylinder 36A and is positioned at the part of charging stage, the pressure in first cylinder was less than suction pressure.The result is, flow through inlet non-return valve 130E and enter into spacer block 150A of inlet air.

Gas flows radially outward through passage 172 and enters into the external channel 174 on the spacer block from central passage 170 (see figure 9) of spacer block 150A.Then, air flow is through the first inflation port 122A and enter into the first cylinder 36A (seeing Fig. 2 A).

With reference to figure 2A and Fig. 9, in this period, the gas of the inlet non-return valve 130E that the flows through second safety check 130A that do not flow through, even also be like this when spacer block 150A is unlocked when allowing to flow freely into this second safety check.This be because the pressure (that is the pressure among the second cylinder 36B) in the second safety check 130A downstream greater than suction pressure.Therefore, the second safety check 130A keeps shut and inlet air flow among the first cylinder 36A.

When compressing the air among the first cylinder 36A after the first piston 40A, the pressure in first cylinder begins to become greater than suction pressure.The result is that inlet air can not flow upstream enter into spacer block 150A through inlet non-return valve 130E.Therefore, the whole air that flow out first cylinder are conducted through the first inflation port 122A, spacer block 150A and through the second safety check 130A.

With reference to figure 2A and Fig. 9, the second safety check 130A is forced to open to allow air to flow out the first cylinder 36A and enters into the second spacer block 150B.This air stream arrives passage 158 (seeing Figure 11 A and Figure 11 B) that radially extends and the exterior channels 160 that is arranged in the downstream end 154 of the second spacer block 150B through the second spacer block 150B.Then, air flow into the second inflation port 122B from groove 160.

Select the timing of the first and

second cylinder

36A and 36B, make that the second cylinder 36B is positioned at its charging stage when the first cylinder 36A is positioned at its exhaust phase.This realizes through the degree of 180 between the first and second

eccentric body

84A, 84B skew β.The air that in the first cylinder 36A, is compressed and is forced among the second spacer block 150B can flow into the second cylinder 36B; With by further compression, this be because in example shown property mode of execution the diameter of second cylinder less than the diameter of first cylinder but these two cylinders have identical stroke.

The second cylinder 36A by the period of first cylinder 36B inflation in, the air of the second spacer block 150B that flows through the 3rd safety check 130B that do not flow through, in addition when second spacer block when the 3rd safety check is opened, also be like this.This be because the pressure (that is the pressure among the 3rd cylinder 36C) in the 3rd safety check 130B downstream greater than pressure at the 3rd safety check place.Therefore, the 3rd safety check 130B keeps shut and air flow among the second cylinder 36B.

With reference to figure 3A and Figure 10, in a similar fashion, compressed air stream enters into the 3rd cylinder 36C through conduit 119 in the second cylinder 36B, further to be compressed at this.Compressed air flow among the four-cylinder 36D in the 3rd cylinder 36C, further to be compressed at this.Compressed air flows out from this compressor 10 through going out opening connector 194 in four-cylinder 36D.

With reference to Figure 12, system 210 comprises thickner 212, and this thickner can be operated for example from atmospheric air input rich oxygen containing gas to be provided.Rich oxygen containing gas is transported in the product jar 214.Regulator 216 will send in the stream pipeline 218 from the rich oxygen containing gas of product jar 214 and should supply in the flowmeter 220 by the oxygen containing gas of richness; This flowmeter 220 should send to the patient by the oxygen containing gas of richness with predetermined flow rate (for example, the flow rate of from 0.1 to 6 Liter Per Minute) subsequently.Alternatively, flowmeter 220 can cut out, and makes that all rich oxygen containing gas is directed into compressor 10.Compressor can adopt various form and can comprise any combination or the son combination of the characteristic of the compressor of describing about Fig. 1-11.In addition, any combination or the sub-combination of the characteristic of the compressor of describing about Fig. 1-11 can be used to various different application, including, but not limited to like Figure 12 and the described system of Figure 13.

The gas that is not directed into the patient is transported to two to valve 224 via pipeline 222.The little part of ten minutes of the gas in the stream pipeline 220 is conducted through pipeline 226 and enters into oxygen sensor 230 with restrictor 228; This oxygen sensor 230 detects whether concentration of oxygen are predetermined values, for example be directed into the patient at least 84% and be directed at least 93 of compressor ± 3%.

When oxygen sensor 230 detections are in predeterminated level or are higher than the concentration of predeterminated level; Two are held open to allow rich oxygen containing gas flow to enter into knock out drum 234 through valve 224 and pipeline 232 to valve 224, and the pressure in pressure in this knock out drum and the product jar 214 is roughly the same.Yet when if oxygen sensor 230 does not detect suitable oxygen concentration, two close to valve 224 and to make oxygen sensor 230 can set up enough oxygen concentrations.This structure is paid the utmost attention to the stream of rich oxygen containing gas, the gas that makes the patient guaranteed to receive to have enough oxygen concentrations.

Knock out drum 234 can have regulator 236 above that, and this regulator 236 is set at 12 psi usually and gets into compressor 10 to allow rich oxygen containing gas when needed.The output of compressor 10 is used to fill cylinder or portable jar 238, to be used for patient movement formula purposes.Alternatively, pressure regulator 236 can be set at from any position of about 13 to about 21 psi.Restrictor 240 controls are from the flow rate of the gas of knock out drum 234 to compressor 10.Be reduced to predetermined value if the operation of compressor 10 causes under the pressure in the knock out drum 234, the pressure transducer (not shown) cuts off gas stream automatically under the pressure that is higher than the gas pressure that is fed into the patient so.This paying the utmost attention to guarantees that the patient has priority for the oxygen containing gas of richness.

Figure 13 shows the 210a of system, and this system is somewhat different than the system 210 of Figure 12.In the 210a of system, compressor 10 comprises oxygen sensor and the control loop of himself, makes not have the element 224-232 as in the system of Figure 12, having.In addition, there is not the regulator 236 that is positioned on the knock out drum.Restrictor can be set between thickner and the knock out drum (should be noted in the discussion above that knock out drum 234 all is optional in all systems, and compressor can directly be supplied with by the product jar).

Aforementioned description relates to the four-cylinder compressor.Yet the characteristic described in this application can be applied to have the compressor of the cylinder of varying number.In addition, disclosed characteristic can be used for comprising the compressor of the cylinder head with different safety check and spacer block design.

Though the present invention is described through the explanation of embodiment of the present invention, though and these mode of executions described in detail, the claimant is not intended to the range constraint of appended claims or is limited to by any way in this details.Additional advantage will be obvious to those skilled in the art with revising.In addition,, can use other geometrical shapies, comprise oval and polygonal (for example, square, rectangle, triangle and Hexagon etc.), and can use other shapes though illustrate and described cylindrical parts at this paper.Therefore, the present invention its more broad sense aspect be not limited to shown in described concrete details, typical equipments and depicted example.Therefore, under the prerequisite of the spirit of the present general inventive concept that does not depart from the claimant or scope, can depart from these details.

Claims

1. compressor that is used for pressurized gas comprises:

First, second, third and four-cylinder; Wherein, The central axis of first cylinder is parallel to the central axis of second cylinder, and the central axis of the 3rd cylinder is parallel to the central axis of four-cylinder, wherein; The axis of first cylinder and second cylinder is angled with respect to the axis orientation of the 3rd cylinder and four-cylinder, to form the V4 cylinder configuration;

Be arranged on first, second, third and four-cylinder in the first, second, third and the 4th piston;

Only two eccentric drive bodies that bent axle, said bent axle have main shaft and drive the first, second, third and the 4th piston.

2. compressor according to claim 1, wherein, the angle that between the axis of the axis of first cylinder and second cylinder and the 3rd cylinder and four-cylinder, forms is 90 degree.

3. compressor according to claim 1; Also comprise cap assemblies, said cap assemblies will compressed gas be sent to second cylinder in first cylinder, compressed gas is sent to the 3rd cylinder and will in the 3rd cylinder, be sent to four-cylinder by compressed gas in second cylinder.

4. compressor according to claim 1; Wherein, First cylinder has that first diameter, second cylinder have second diameter, the 3rd cylinder has the 3rd diameter and four-cylinder has the 4th diameter; Wherein, first diameter greater than second diameter, second diameter greater than the 3rd diameter, the 3rd diameter greater than the 4th diameter.

5. compressor that is used for pressurized gas comprises:

Cylinder assembly; Said cylinder assembly comprises first cylinder, second cylinder with second diameter with first diameter, has the 3rd cylinder of the 3rd diameter and the four-cylinder with the 4th diameter, wherein, first diameter greater than second diameter, second diameter greater than the 3rd diameter, the 3rd diameter greater than the 4th diameter; Wherein, It is in upright arrangement that first cylinder becomes with second cylinder, and the 3rd cylinder and four-cylinder are in upright arrangement, wherein; First cylinder and second cylinder form the angle of about 90 degree with respect to the 3rd cylinder and four-cylinder, make cylinder assembly have the V4 structure;

Be received in respectively first, second, third and four-cylinder in the first, second, third and the 4th piston;

The first, second, third and the 4th driveshaft, the said first, second, third and the 4th driveshaft be arranged in first, second, third and four-cylinder in move the first, second, third and the 4th piston;

Bent axle; Said bent axle has main shaft, said main shaft comprise said crankshaft rotating around crankshaft center line, wherein; Said bent axle comprises that the first and second circular connecting rods drive body; The said first and second circular connecting rods drive bodies and extend radially outwardly and eccentric with crankshaft center line from crankshaft center line, and wherein, the first and the 3rd driveshaft is rotatably connected to the first circular connecting rod driving body; Make the circular connecting rod of winning drive body and make the first and the 3rd driveshaft to-and-fro motion around the rotation of crankshaft center line; And wherein, the second and the 4th driveshaft is rotatably connected to the second circular connecting rod and drives body, makes the second circular connecting rod drive body and makes the second and the 4th driveshaft to-and-fro motion around the rotation of crankshaft center line;

Be used for gas source offer first cylinder the gas access, be used for gas from first cylinder offer second cylinder first air-flow path, be used for gas from second cylinder offer the 3rd cylinder second air-flow path, be used for gas is offered the 3rd air-flow path of four-cylinder and is used for the gas that is in compressive state is provided to the gas outlet outside the compressor from the 3rd cylinder.

6. compressor according to claim 5, wherein, it is that the only connecting rod of bent axle drives body that the said first and second circular connecting rods drive body.

7. compressor according to claim 5, wherein, said connecting rod drives body, and each includes single continuous cylinder.

8. compressor according to claim 5, wherein, said connecting rod drives body, and each includes and the integrally formed single continuous cylinder of main shaft.

9. compressor according to claim 5, wherein, said first connecting rod drives body and drives body in abutting connection with second connecting rod.

10. compressor according to claim 7, wherein, said first connecting rod drives body and drives body in abutting connection with second connecting rod.

11. compressor according to claim 8, wherein, said first connecting rod drives body and drives body in abutting connection with second connecting rod.

12. compressor according to claim 5, wherein, said first connecting rod drives body and only is connected to said second connecting rod driving body at the place, overlap region that itself and second connecting rod drive between the body.

13. compressor according to claim 5, wherein, said first connecting rod drives body and is connected to said second connecting rod driving body through the disk that is arranged between first connecting rod driving body and the second connecting rod driving body.

14. compressor according to claim 13, wherein, said disk centers on said crankshaft center line.

15. compressor according to claim 14, wherein, the excircle of said disk extends to first and second connecting rods and drives outside both excircles of body.

16. compressor according to claim 8; Wherein, Said first connecting rod drives body and is connected to said second connecting rod driving body through disk, and said disk and first connecting rod drive body and second connecting rod driving body integral body forms and be set at first connecting rod driving body and second connecting rod drives between the body.

17. compressor according to claim 5, wherein, said first piston comprises and waves piston.

18. compressor according to claim 5, wherein, said second piston comprises the guide member that is pivotably connected to second driveshaft and is arranged on the compression element in second cylinder discretely with this guide member.

19. compressor according to claim 5, wherein, during the compression stroke of second driveshaft, guide member engages compression element to force the lid end of compression element towards second cylinder.

20. compressor according to claim 19, wherein, during the charging stroke of second driveshaft, the superheated steam of being forced to enter into second cylinder by first piston forces the crankshaft end of compression element towards second cylinder.

21. compressor according to claim 5, wherein, the diameter of the clutch shaft bearing supporting portion of bent axle drives the diameter of body less than the first circular connecting rod.

22. a compressor that is used for pressurized gas comprises:

Cylinder assembly; Said cylinder assembly comprises first cylinder, second cylinder with second diameter with first diameter, has the 3rd cylinder of the 3rd diameter and the four-cylinder with the 4th diameter; Wherein, first diameter greater than second diameter, second diameter greater than the 3rd diameter and the 3rd diameter greater than the 4th diameter, wherein; It is in upright arrangement that first cylinder becomes with second cylinder, and it is in upright arrangement that the 3rd cylinder becomes with four-cylinder;

Bent axle, said bent axle has main shaft, said main shaft comprise said crankshaft rotating around crankshaft center line; Wherein, Said bent axle comprises that the first and second circular connecting rods drive bodies, and the said first and second circular connecting rods drive bodies and extend radially outwardly and eccentric with crankshaft center line from crankshaft center line, wherein; The first circular connecting rod drives body and drives body in abutting connection with the second circular connecting rod; The first and the 3rd driveshaft is rotatably connected to the first circular connecting rod and drives body, and make the circular connecting rod of winning drive body and make the first and the 3rd driveshaft to-and-fro motion around the rotation of crankshaft center line, and wherein; The second and the 4th driveshaft is rotatably connected to the second circular connecting rod and drives body, makes the second circular connecting rod drive body and makes the second and the 4th driveshaft to-and-fro motion around the rotation of crankshaft center line;

23. compressor according to claim 22, wherein, it is that the only connecting rod of bent axle drives body that the said first and second circular connecting rods drive body.

24. compressor according to claim 22, wherein, said connecting rod drives body, and each includes single continuous cylinder.

25. compressor according to claim 22, wherein, said connecting rod drives body, and each includes and the integrally formed single continuous cylinder of main shaft.

26. compressor according to claim 22, wherein, said first connecting rod drives body and only is connected to said second connecting rod driving body at the place, overlap region that itself and second connecting rod drive between the body.

27. compressor according to claim 22, wherein, said first piston comprises and waves piston.

28. compressor according to claim 22, wherein, said second piston comprises the guide member that is pivotably connected to second driveshaft and is arranged on the compression element in second cylinder discretely with this guide member.

29. compressor according to claim 22, wherein, during the compression stroke of second driveshaft, guide member engages compression element to force the lid end of compression element towards second cylinder.

30. compressor according to claim 29, wherein, during the charging stroke of second driveshaft, the superheated steam of being forced to enter into second cylinder by first piston forces the crankshaft end of compression element towards second cylinder.