CN1407230A

CN1407230A - Reciprocal volume compressor and piston thereof

Info

Publication number: CN1407230A
Application number: CN 02143461
Authority: CN
Inventors: 安东尼诺·巴尔马
Original assignee: Abac Aria Compressa SRL
Current assignee: Abac Aria Compressa SRL
Priority date: 2001-08-14
Filing date: 2002-08-14
Publication date: 2003-04-02
Anticipated expiration: 2022-08-14
Also published as: ITTO20010815A0; CN100400874C; ITTO20010815A1

Abstract

The invention provides a reciprocal volume compressor 1 which has a volume variable compressing chamber 40 and a piston 17 which has a front surface 39 for defining the compressing chamber 40 and a reed suction valve 41 which is opposite to the front surface 39 to make the air to enter into the compressing chamber 40 via a pipeline arranged in the piston 17.

Description

Reciprocal displacement compressor and the piston that is used to carry out this reciprocal displacement compressor

Technical field

The present invention relates to a kind of reciprocal displacement compressor, it has determined a transfiguration pressing chamber, the one end communicates with a transport tube by an escape cock, and its other end is to filter the porous infiltration body of wanting compressed suction air by a suction valve and purpose and communicates with the external world.

Background technique

In known reciprocal displacement compressor, escape cock and suction valve and filter are installed on the plate of this pressing chamber of demarcation, and in the face of a piston setting, during use, this plate is driven by a groups of motors that is engaged, reciprocally to do the cycle displacement towards this plate itself.

With respect to above-mentioned known solution, need obtain a reciprocal displacement compressor, its overall dimensions is as much as possible little, and high relatively efficient and long working life are arranged.

Summary of the invention

The purpose of this invention is to provide a kind of piston that is used for reciprocal displacement compressor, make it satisfy above-mentioned needs in a kind of not only simple but also economic mode.

The invention provides a kind of reciprocal displacement compressor, it comprises a transfiguration pressing chamber; Can make the inhalation valve that compressed gas enters in described pressing chamber; Can make the escape cock of discharging by the gas of described pressing chamber compression; And piston with front surface of a described pressing chamber of demarcation; The feature of this compressor is that described piston is equipped with suction valve.

Description of drawings

Now, the present invention is described with reference to the accompanying drawings, and wherein accompanying drawing has shown an infinite embodiment, wherein:

Fig. 1 has shown the preferred embodiment of a reciprocal displacement compressor of the present invention by a side view and a part sectioned view;

Fig. 2 is the planimetric map of amplification of piston of the compressor of a Fig. 1;

Fig. 3 also is the planimetric map of decomposition of the piston of a Fig. 2;

Fig. 4 is one, for the sake of clarity removes parts, sectional drawing that the line IV-IV along Fig. 2 of the compressor of Fig. 1 cuts open;

Fig. 5 is a view similar to Fig. 4 and the cross-sectional view taken that Fig. 4 is provided; And

Fig. 6 is the planimetric map thinner amplification, that decompose of the compressor of a Fig. 1.

Embodiment

In Fig. 1, reciprocal displacement compressor of 1 expression, it comprises a structure 2 (by showing partly and briefly) of the electric notor 3 of a rotation being installed and a known transmission group 4 being housed, wherein transmission group comprises a transmission shaft 5 that engages with structure 2, so that it is around its axis 6 and rotate in a fixing axial position, also comprise a reduction gear 7, its transmits from motor 3 to axle 5 rotatablely move, and comprising a connecting rod and crankshaft gear 8, this transmission device is converted to to-and-fro motion to rotatablely moving of axle 5.

Transmission device 8 comprises a radially crank 10, and it and 5 and balancer weights 11 radially relative with crank 10 of axle are as a whole, also comprise one around a connecting rod 12 that pin 13 is hinged with crank 10, and this sells 13 is eccentric with respect to axis 6.

With reference to Fig. 1,4 and 5, compressor 1 also comprises the compression set 14 of a piston type, it comprise successively one along an axis vertical 16 with axis 6 that extend and with the fixing cylinder buss 15 of structure 2, piston 17 with a fluid-tight, this piston 17 slides along an axis in the lining 15, in order integrally to form a mushroom body 18, it is as a whole with 12 one-tenth on connecting rod, thereby and drive towards head plate 19 to-and-fro motion by transmission group 4, this head plate 19 is terminal and fix on a position and a structure 2 vertical with axis 16 at the axis of lining 15.

Shown in Fig. 3,4 and 5, piston 17 comprises a goblet 20, it extends along axis 16, as a whole with 12 one-tenth on connecting rod, around axial projections 21 and, with this projection 21 together, determine a ring cavity 22 that a filter block 23 is housed, this filter block 23 is preferably made by materials of porous infiltration and also is ring-type.This goblet 20 comprises a diapire 24 with four through holes 25, and this through hole 25 is with at interval the angle setting of being equal to around axis 16, and comprises a circular sidewall 26 with an outer annular shoulder 27.A clasp 28 leans against on the shoulder 27 along an axial direction, is preferably made by Furtulon (Teflon), and it engages with lining 15 around goblet 20 and in the mode of a slip.

Piston 17 also comprises a disk shaped cap 29 (both sides from Fig. 3 show with a planimetric map), it is vertical with axis 16, be arranged on respect to projection 21, the axis side relative with wall 24, it has a center hole 30 and fixing with goblet 20 by a screw 31, and this screw passes hole 30 and is fixed in the axial screw thread hole 32 in the projection 21.

Hole 30 is delimited by an axial annex 33 in the face of projection 21, and this annex has a flat side 34, and in order to determine a location parameter between lid 29 and body 20, this annex engages (Fig. 3) with an added body 35 that axially exists in projection 21.

For ring 28 is leant against on shoulder 27, lid 29 comprises the tip protrusion 36 of a ring-type, it is fixing around body 20, and be arranged to lean against vertically on the ring 28, lid 29 also has four through holes 37, they center on axis 16 with equally spaced angle setting, and with cavity 22 and hole 25, determine an axial suction line 38 by piston 17.

Lid 29 has a forward outer surface 39, it and axis 16 perpendicular, and determine transfiguration chambers 40 with lining 15 and plate 19, this chamber communicates with the external world by the suction valve 41 of pipeline 38 by opposed face 39 insertions.

Valve 41 is limited by a tongue that comprises an intermediate portion 42, this intermediate portion 42 has an axial bore 43 with polygonal limit, the limit in this hole 43 is engaged by an additional axial annex 44, this annex 44 is relative with annex 33, to determine one at tongue 41 with cover angular orientation parameter between 29.Intermediate portion 42 is blocked by the head of screw 31, and this screw presses solidly tongue 41, lid 29 and is in the same place with body 20.Tongue 41 also comprises four independently lobes 45, for switch hole 37, according to the pressure that exists in the chamber 40, wherein each protuberance all radially extends and in the elasticity towards the relative part 42 of direction generation on surface 39 from the part 42 of the position in a relative hole 37.

With reference to accompanying drawing 1,4 and 6, chamber 40 communicates with a discharge conduit 46 by three through holes 47 obtaining in plate 19 and by the insertion of an expulsion valve 48, and wherein expulsion valve 48 itself is set on the side relative with chamber 40 towards plate 19.Valve 48 is limited by a tongue, this tongue comprises an end portion 49, it is fixing with mode known, that need not describe in detail and plate 19, also comprise three independently lobes divide 50, for switch hole 47, according to the pressure that exists in the chamber 40, wherein each protruding part 50 all from extends highlightedly in the part 49 of the position in a relative hole 47 and with respect to part 49 towards plate 19 generation elasticity.It all is to be limited at an independent rib 51 of installing in the face of a position of tongue 48 by structure 2 that each lobes is divided 50 distortion.

As shown in Figure 1, compressor 1 also comprises a ventilation plant 52 at last, this device is included in a plurality of openings 53 (by showing concisely) and the rotor 54 with centrifugal blade device 55 that obtains in the structure 2 successively, for cool off the group 14 and in suction process air supply pipe road 38, centrifugal blade device 55 can air from opening 53 towards the group 14 transmission.

Rotor 54 is coaxial with axle 5, it engages with structure 2 at a fixing axial position, and makes it around axis 6 rotations, and it also comprises a framework 56, it is hinged that this framework and pin 13 one extends axially part 57 so that its by pin 13 itself around axis 6 rotations.

More particularly, in the induction stroke of piston 17, the capacity of chamber 40 increases, and therefore produces a degree of vacuum in chamber 40, and in order to suck air by pipeline 38, this degree of vacuum maintaining valve 48 cuts out and open valve 41.In the compression stroke and discharge stroke of piston, the capacity of chamber 40 reduces, so that the increase of the pressure of chamber 40, thereby cut-off valve 41 and open valve 48, thus the pressurized air of discharge in pipeline 46.

Still at the compression stroke and the discharge stroke of piston 17,, lobes 45 is leaned against on the surface 39 at the inertial force that acts on the lobes 45 in order to close corresponding hole 37 very fast, efficiently.

Also have, between the moving period of piston 17 because the nonlinear motion of connecting rod 12, in order to offset the swing of piston 17, ring 28 flexibly be out of shape and, simultaneously, keep piston 17 and lining 15 to be engaged with each other in the mode of a fluid-tight.

As mentioned above, be apparent that compressor 1 is especially organized suitable little, particularly littler with respect to axis 16 size radially of 14 size, this is because such fact,, includes in piston 17 that inlet hole and suction valve cause that is.In fact, plate 19 only is equipped with valve 48, does not adorn any suction valve, thus very little of the diameter that makes the radial dimension of plate 19 and final lining 15.

Because with respect to known solution, the displacement of group 14 reduces to some extent, variation in compressed-air actuated flow can easily be remedied by the angular velocity that increases axle 5, and the weight of piston 17 is come balance by a balancer weight that suitably is calibrated 11.

Because the structure characteristic that piston 17 is specific, it is highly susceptible to making and assembling, and to use filter block 23 biggest advantage of Reed Valve 41,48 and porous infiltration type be not need to lubricate.In addition, independent screw 31 is unclamped from hole 32 and can unload lid 29 from the simple relatively modes that body 20 separates by a kind of to piece 23.

At last, device 52 has not only kept high efficient of compressor and long working life, but also considerably simple and compact, because it is directly started by transmission device 8, therefore, it needs a spot of parts.

As mentioned above, be apparent that under the situation of the scope that does not break away from the present invention and protected, above-mentioned compressor 1 can be improved and change.

More particularly, different with above-mentioned those valves escape cock and suction valves can be set at and/or be installed on the position that is different from above-mentioned those positions.

Claims

1. back and forth displacement compressor (1) comprises a transfiguration pressing chamber (40); Can make the suction device (41) that compressed gas enters in described pressing chamber (40); Can make discharge valve system (48) by the gaseous emission of described pressing chamber (40) compression; With a piston (17) that the front surface (39) of a described pressing chamber of demarcation (40) is arranged; It is characterized in that: described piston (17) is equipped with inhalation valve (41).

2. compressor as claimed in claim 1 is characterized in that: described inhalation valve (41) combines with described front surface (39).

3. compressor as claimed in claim 1 or 2, it is characterized in that: described piston (17) has a pipeline (38) at least, and it extends and comprise an opening (37) by described front surface (39) at least along a crosswise direction towards described front surface (39); Described inhalation valve (41) comprises the device (45) of the elastically deformable that is used to open and close described pipeline (38).

4. compressor as claimed in claim 3 is characterized in that: described pipeline (38) comprises a plurality of described openings (37) that distribute of going up at described front surface (39); The member (45) of the independent elastically deformable of a member (45) that is independent of other elastically deformable.

5. compressor as claimed in claim 4 is characterized in that: the member of described elastically deformable (45) constitutes the part of the tongue (41) facing described front surface (39) and be provided with.

6. compressor as claimed in claim 5, it is characterized in that: it comprises the device (43,44) of reference, they are arranged between described tongue (41) and the described front surface (39), thereby locate the member (45) of described elastically deformable with respect to described hole (37).

7. as claim 5 or 6 described compressors, it is characterized in that: described pipeline (38) comprises a cavity (22), and described piston (17) also comprises the filtrating equipment (23) that is installed in the described cavity (22).

8. compressor as claimed in claim 7 is characterized in that: described piston comprises that a goblet (20) of determining described cavity (22) is with a lid (29) and can be connected described goblet (20) and the releasable connection set of described lid (29) (31,32).

9. compressor as claimed in claim 8 is characterized in that: described releasable connection set (31,32) comprises a single connector element (31), and it is pressed together described tongue (41), described lid (29) and described goblet (20).

10. as the top described compressor of any one claim, it is characterized in that: it comprises a lining (15) and a plate that is arranged on a fixed position and faces described front surface (39) that described piston (17) is installed; Described discharge valve system (48) and described plate (19) be separate and therewith plate (19) itself engage.

11. compressor as claimed in claim 10 is characterized in that: described discharge valve system (48) comprises another tongue (48).

12. as the top described compressor of any one claim, it is characterized in that: it comprises drive unit (3,4) that piston (17) is moved reciprocatingly and is driven to give the ventilation plant (52) of air towards described piston (17) by described drive unit (3,4).

13. compressor as claimed in claim 12 is characterized in that: described drive unit (3,4) comprises that the line shaft (5) of an axis around it (6) rotation and one are arranged on connecting rod between described line shaft (5) and the described piston (17) and crankshaft gear (8) and one and center on a crank pin (13) and sell hinged crank (10) therewith; Described ventilation plant (52) comprises a bladed rotor (54), and it is coaxial and driven by the prolongation (57) of described crank pin (13) with described line shaft (5), with axis (6) rotation around described line shaft (5).

14. piston (17) as any one reciprocal displacement compressor of described formation (1) of claim 1 to 9.

15. as the reciprocal displacement compressor of roughly describing in the accompanying drawing and illustrating.

16. as the piston that is used for reciprocal displacement compressor of roughly describing and illustrating in the accompanying drawings.