HERMETICALLY ENCAPSULATED REFRIGERANT COMPRESSOR

Abstract

The invention relates to a hermetically encapsulated refrigerant compressor comprising a housing having a bottom part and a cover, the cover being connectable to the bottom part, an electrical connection piece penetrating the housing and a piston pump which is arranged in the housing and can be electrically connected to a control unit via the connection piece. The cover of the housing has a through opening in which the electrical connection piece is arranged. The housing is configured in such a way that, when the housing is open, the piston pump can be inserted into the cover of the housing and is connectable to the electrical connection piece.

Claims

1-12. (canceled)

13. A hermetically encapsulated refrigerant compressor comprising a housing having a bottom part and a cover, the cover being connectable to the bottom part, an electrical connection piece penetrating the housing and a piston pump which is arranged in the housing and can be electrically connected to a control unit via the connection piece, characterized in that the piston pump is arranged in the cover of the housing and the cover of the housing has a through opening in which the electrical connection piece is arranged and that the housing is configured in such a way that, when the housing is open, the piston pump can be inserted into the cover of the housing and is connectable to the electrical connection piece.

14. A refrigerant compressor according to claim 13, characterized in that at least one positioning aid is provided onto which the piston pump can be attached in an upside-down manner, with the housing being open.

15. A refrigerant compressor according to claim 14, characterized in that the positioning aid comprises geometric formations, such as projections or ribs, on the inside of the cover, the geometric formations serving as supports for the piston pump.

16. A refrigerant compressor according to claim 14, characterized in that the positioning aid comprises geometric formations, such as projections or ribs, on the housing of the piston pump, which formations serve as supports on the inside of the cover when the piston pump is being inserted into the cover of the housing.

17. A refrigerant compressor according to any of claims 14, characterized in that the positioning aid comprises at least one element insertable into the cover and serving as a support for the piston pump.

18. A refrigerant compressor according to claim 13, characterized in that the electrical connection piece forms electrical plugs with a steel base body and metallic conductor pins held by an electrically insulating material, preferably glass, with the electrical connection piece being inserted into the through opening of the cover and being sealingly connected to the circumference of the cover's through opening.

19. A refrigerant compressor according to claim 13, characterized in that the housing has a substantially horizontal dividing plane between the bottom part and the cover of the housing, whereby the bottom part and the cover of the housing can be welded together along this dividing plane.

20. A refrigerant compressor according to claim 13, characterized in that the housing is made of a corrosion-resistant material, preferably metal or metal alloys, with the housing parts preferably being deep-drawn parts.

21. A refrigerant compressor according to claim 13, characterized in that the cover of the housing has connecting pipes, in particular a suction pipe, a pressure pipe and a maintenance pipe.

22. A refrigerant compressor according to claim 13, characterized in that the bottom part of the housing has adjustable feet or fastening elements on its outside.

23. A method of assembling a hermetically encapsulated refrigerant compressor according to claim 13, the method comprising the following steps: providing a housing having a bottom part and a cover and comprising a through opening penetrating the cover; sealingly inserting an electrical connection piece into the through opening of the cover of the housing; placing the cover on a working surface with its open side up; providing a piston pump and inserting the piston pump into the cover of the housing from above in an upside-down manner; establishing an electrical connection between the electrical connection piece and the piston pump; arranging the bottom part with its open side down and placing the bottom part thus arranged on the cover of the housing; establishing a hermetically sealed connection between the bottom part and the cover of the housing, preferably by means of a welded joint.

24. A method according to claim 23, characterized in that the piston pump is inserted into the cover of the housing from above in an upside-down manner in such a way that the piston pump will be oriented and will lie by means of at least one positioning aid.

Description

[0030] The invention will now be explained in further detail on the basis of exemplary embodiments, with reference to the drawings.

[0031] FIG. 1 is a perspective view of a hermetically encapsulated refrigerant compressor comprising a connection piece according to the present invention.

[0032] FIG. 2 is a sectional view of the hermetically encapsulated refrigerant compressor of FIG. 1.

[0033] Hereinafter, reference is made to FIGS. 1 and 2. The invention provides a hermetically encapsulated refrigerant compressor 100 comprising a housing 10 having a bottom part 11 and a cover 12. The bottom part 11 and the cover 12 are each formed in the shape of a bowl. The cover 12 has a through opening 12a into which an electrical connection piece 30 is inserted in a hermetically sealing manner. The electrical connection piece 30 can be connected to a control unit, which is not shown in the figures. A piston pump 40, which can be electrically connected to the control unit via the electrical connection piece 30, is arranged in the interior of the housing 10. The connection piece 30 comprises electrical plugs 31 with steel base bodies on its outside and its inside, the electrical plugs 31 comprising metallic conductor pins 32 held by an electrically insulating material, in particular glass. The electrical connection piece can be a conventional component.

[0034] The housing 10 of the refrigerant compressor 100 is formed from a die-cast metal or a metal alloy. As can be seen in the figures, the bottom part 11 has a substantially horizontal, weldable dividing plane 50 with the cover 12 of the housing 10. Furthermore, the cover 12 of the housing 10 contains connecting pipes 20, 21, 22, in particular a suction pipe 20, a pressure pipe 21 and a maintenance pipe 22.

[0035] The refrigerant compressor 100 has fastening elements 13, 14 on the bottom part 11 of the housing 10 so that it can be securely fixed to a base, for example, by means of a screw connection.

[0036] The steps of assembling the hermetically encapsulated refrigerant compressor 100 are illustrated below. Those steps comprise:

[0037] providing a housing 10 having a bottom part 11 and a cover 12 and comprising a through opening 12a penetrating the cover 12;

[0038] sealingly inserting an electrical connection piece 30 into the through opening 12a of the housing 10;

[0039] placing the cover 12 on a working surface with its open side, i.e., its underside, up;

[0040] providing a piston pump 40 and inserting the piston pump 40 into the cover 12 of the housing 10 from above in an inverted position, i.e., in an upside-down manner;

[0041] establishing an electrical connection between the electrical connection piece 30 and the piston pump 40;

[0042] arranging the bottom part 11 with its open side down, i.e., in an inverted position, and placing the bottom part 11 thus arranged on the cover 12 of the housing 10;

[0043] establishing a hermetically sealed connection between the bottom part 11 and the cover 12 of the housing 10, preferably by means of a welded joint.

[0044] The electrical connection of the piston pump 40 to the connection piece 30 is effected via cable lines, not shown, which are connected to those parts of the metal pins 32 which face the interior of the housing 10. By means of cables, a control unit for the piston pump 40 can be electrically connected to those parts of the metal pins 32 which protrude from the housing 10.

[0045] The piston pump 40 is inserted into the cover 12 of the housing 10 from above in an upside-down manner in such a way that the piston pump 40 will lie on defined positioning aids 12b, 12c of the cover 12.