Connecting rod/piston arrangement for alternative compressor and process for assembling connecting rod/piston arrangement for alternative compressor

Abstract

The present invention refers to a connecting rod/piston arrangement for alternative compressor, comprising using at least an intermediate element capable of associating said connecting rod with the piston, wherein both do not radially contact with one another. A process for assembling said connecting rod/piston arrangement for alternative compressor is also disclosed. The connecting rod/piston arrangement for alternative compressor comprises at least a piston (1), at least an intermediate element (2) and at least a connecting rod (3), wherein said piston (1) comprises at least a non-through axial channel (11); said intermediate element (2) comprises at least a through axial channel (21); and said connecting rod (3) comprises at least a connection end (31). In this regard, the intermediate element (2) is securely housed inside the non-through axial channel (11) of piston (1); and said connection end (31) of connecting rod (3) is securely housed inside the through axial channel (21) of intermediate element (2).

Claims

1. Connecting rod/piston arrangement for alternative compressor, comprising at least a piston, at least an intermediate element and at least a connecting rod, wherein: said piston comprising at least a non-through axial channel; said intermediate element comprising at least a through axial channel; said connecting rod comprising at least a connection end; said intermediate element is securely housed inside the non-through axial channel of piston; said connection end of connecting rod is securely housed inside the through axial channel of intermediate element; and the connecting rod/piston arrangement, wherein the intermediate element has a radial physical contact (R1) and axial physical contact (A2) with an inner face of the non-through axial channel of said piston.

2. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said non-through axial channel of piston is cylindrical.

3. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said intermediate element is cylindrical.

4. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein an inner diameter of the non-through axial channel of piston is analogous to an outer diameter of said intermediate element.

5. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said through axial channel of intermediate element is cylindrical.

6. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said connection end of connecting rod is cylindrical.

7. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein an inner diameter of the through axial channel of intermediate element is analogous to an outer diameter of the connection end of connecting rod.

8. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said intermediate element is securely housed in the closed end of the non-through axial channel of piston.

9. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein said connection end of connecting rod has a radial physical contact (R2) with the inner face of the through axial channel of intermediate element, and axial physical contact (A2) with the inner face of the non-through axial channel of piston.

10. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein it comprises a binder disposed between the outer face of the intermediate element and the inner face of the non-through axial channel of piston.

11. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 1, wherein it comprises a binder disposed between said end of connecting rod and the inner face of the through axial channel of intermediate element.

12. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 11, wherein said binder comprises a polymer resin.

13. Process for assembling a connecting rod/piston arrangement for alternative compressor, as defined in claim 1, wherein it comprises a step in which at least a piston, at least an intermediate element and at least a connecting rod are simultaneously attached, wherein said intermediate element is secured inside piston, and said connecting rod is secured inside intermediate element.

14. Process for assembling a connecting rod/piston arrangement for alternative compressor, in accordance with claim 13, wherein it comprises at least application of a binder during simultaneous fixation between said piston, intermediate element and connecting rod.

15. Process for assembling the connecting rod/piston arrangement for alternative compressor, in accordance with claim 14, wherein said binder comprises a polymer resin.

16. Connecting rod/piston arrangement for alternative compressor, in accordance with claim 10, wherein said binder comprises a polymer resin.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) The present invention will be described in more details on the basis of figures listed below, which:

(2) FIG. 1 illustrates a schematic cut of connecting rod/piston arrangement for alternative compressor; and

(3) FIG. 2 illustrates a connecting rod/piston arrangement for alternative compressor in an exploded view.

DETAILED DESCRIPTION OF THE INVENTION

(4) In accordance with the main embodiment of the present application, a connecting rod/piston arrangement for alternative compressor, more specifically for linear compressor used in cooling systems and the like, is disclosed. Said connecting rod/piston comprises at least a piston 1, at least an intermediate element 2 and at least a connecting rod 3.

(5) In this regard, said intermediate element 2 has the function of essentially indirectly connecting an end of the connecting rod 3 to said piston 1 such that a reciprocating axial movement of the opposite end of said connecting rod 3 is directly transmitted to said piston 1.

(6) FIGS. 1 and 2 (although being schematic) illustrate the preferred embodiment of the connecting rod/piston of the present invention.

(7) By this way and in accordance with the preferred embodiment of the present invention, said piston 1 comprises a cylindrical body comprising a non-through axial channel 11, that is, an axial channel delimited by the working end of the piston, which is closed. The intermediate element comprises a tubular cylindrical body including, therefore, a through axial channel 21. Said connecting rod 3 comprises a rod-type having a connection end 31, which is also cylindrical.

(8) Said intermediate element 2 is securely housed inside the non-through axial channel 11 of said piston 1, and the connection end 31 of the connecting rod 3 is securely housed inside the through axial channel 21 of the intermediate element.

(9) Such a disposition renders the arrangement rigid, and, hence, it is ensured that reciprocating axial movement of the opposite end of the connecting rod is fully transmitted to piston 1.

(10) Furthermore, the present connecting rod/piston arrangement allows for the mass of piston 1 to be relieved since same is hollow and does not provide for its internal volume to be fulfilled by said intermediate element 12 and connecting rod 3. Such a characteristic is extremely important concerning the frequency of functioning and vibration levels of the compressor.

(11) To this effect, and in accordance with the preferred embodiment of the present invention, inner diameter of the non-through axial channel 11 of piston 1 is analogous to outer diameter of the intermediate element. This permits juxtaposition between said elements.

(12) Inner diameter of the through axial channel 21 of intermediate element 2 is also analogous to outer diameter of the connection end 31 of connecting rod 2, and this also permits juxtaposition between said elements.

(13) Optionally, the above-mentioned diameters can present a certain clearance therebetween (on the order of from 0.1 mm to 0.2 mm diametrical clearances). Such clearances are preferably fulfilled with binder.

(14) In this context, the use of a binder disposed between the outer face of the intermediate element 2 and the inner face of the non-through axial channel 11 of said piston 1 is disclosed. It is also contemplated the use of a binder disposed between the end 31 of the connecting rod 3 and the inner face of the through axial channel 21 of the intermediate element 2.

(15) In both cases, the binder preferably comprises a polymer resin. More specifically (but not limitative), said polymer resin preferably comprises a monocomponent epoxy resin.

(16) In accordance with this disposition between said elements, it is observed that intermediate element 2 is securely housed at the closed end of non-through axial channel 11 of the piston 1 so that the referred to intermediate element provides radial R1 and axial A2 physical contact with the inner face of the axial channel of non-through axial channel 11 of piston 1.

(17) In this context, it can also be noted that the connection end 31 of connecting rod 3 provides for radial physical contact R2 with the inner face of the through axial channel 21 of intermediate element 2, and axial physical contact A1 with the inner face of the non-through axial channel 11 of piston 1.

(18) As formerly said, the present invention additionally provides a preferential process for assembling said connecting rod/piston arrangement for alternative compressor as above depicted.

(19) Generally, said process comprises a (assembling) step where piston 1, intermediate element 2 and connecting rod 3 are simultaneously attached.

(20) As can be noted, the intermediate element 2 is secured inside the piston 1, and the connecting rod 3 is secured inside the intermediate element 2. In this assembling step, application of a binder during simultaneous fixation between said piston 2, intermediate element 2 and connecting rod 3 is also contemplated.

(21) After describing a preferred exemplary embodiment of the connecting rod/piston arrangement for alternative compressor, in addition to a preferential process for assembling, it should be understood that the scope of the present invention encompasses other variations, which are limited by the contents of the set of claims, including therein possible equivalents.