公开(公告)号：US20250084839A1

公开(公告)日：2025-03-13

申请号：US18637780

申请日：2024-04-17

Applicant: OFFICINE MARIO DORIN S.P.A.

Inventor： Mario DORIN ,  Giulio LENZI

IPC: F04B39/00 ,  F04B39/12 ,  F25B31/02

Abstract: A reciprocating compressor with a head-holding turret in the upper portion of which one or more recesses, open to the outside, are defined, which reduce as much as possible the contact surface with the valve carrier plate above.

公开(公告)号：US20230034730A1

公开(公告)日：2023-02-02

申请号：US17785599

申请日：2020-12-15

Applicant: OFFICINE MARIO DORIN S.P.A.

Inventor： Mario DORIN ,  Mauro DALLAI

IPC: F04B49/22 ,  F04B39/12 ,  F04B27/12

Abstract: A multi-cylinder reciprocating compressor for cooling systems and/or conditioning systems and/or heat pumps, comprising a casing, in which at least one first group of at least three cylinders is provided, in which cylinders respective suction/compression pistons for sucking/compressing the cooling fluid in said cylinders being adapted to slide, and at least one first head tightly connected to said casing above said at least one first group of at least three cylinders, suction and delivery chambers for the fluid being defined on said at least one head that are associated with the at least three cylinders of said at least one first group of cylinders, at least one partialization device being provided for partializing the fluid sucked by said at least one first group of cylinders so as to vary the flow rate of the fluid sucked through the first head, with which the first group of cylinders is associated, said at least one first head comprising at least one first suction chamber and one second suction chamber, separated from each other and provided with respective suction ports, wherein each chamber is connected to a respective sub-group of cylinders of a respective first group, and wherein the partialization device comprises at least one first valve and at least one second valve that are adapted to close/to open the suction port of said first chamber and said second chamber respectively.

公开(公告)号：US20220025876A1

公开(公告)日：2022-01-27

申请号：US17311566

申请日：2019-12-05

Applicant: OFFICINE MARIO DORIN S.P.A.

Inventor： Mauro DALLAI ,  Mario DORIN

IPC: F04B27/10 ,  F25B31/00 ,  F04B39/02 ,  F25B31/02

Abstract: A reciprocating compressor (10) comprises a casing (11), inside which two chambers are defined, respectively a first chamber (12) corresponding to the compression section, which, in turn, comprises at least one piston (16), a slider-crank mechanism (17) and an oil box, and a second chamber (13) for the motor (14) of the compressor. A transmission shaft (18) is provided, operatively connected to said motor and to said slider-crank mechanism. Said chambers are separated by means of a supporting portion (19) of said shaft, said supporting portion having a passage (20) for said shaft, wherein at least one anti-friction bushing (21) is provided in said passage for supporting said shaft. An oil supply duct (22) is provided at least partially inside said shaft, wherein the duct (22) has at least an end opening (23, 25) exiting in the space between said shaft and said passage so as to allow the lubrication of said at least one anti-friction bushing and said shaft. A niche (24, 26) is provided between the end of said passage (20) facing said second chamber (13) and said end opening (23, 25) of said duct. A discharge channel (27) is operatively connected to said niche and to said oil box, so that the oil lubricating the anti-friction bushing (21) and coming from the end opening is depressurized and adapted to come back into said oil box, thus eliminating or limiting the amount of oil reaching the second chamber with the motor.

公开(公告)号：US20210356175A1

公开(公告)日：2021-11-18

申请号：US17284353

申请日：2019-10-11

Applicant: OFFICINE MARIO DORIN S.P.A.

Inventor： Mario DORIN ,  Mauro DALLAI

IPC: F25B1/02 ,  F04B27/08 ,  F04B39/12 ,  F04B39/00 ,  F04B39/10

Abstract: Reciprocating-type compressor for refrigeration and/or conditioning and/or heat pump systems, comprising—a casing in which there is defined at least one compression section comprising at least one cylinder and a corresponding compression piston, —a head provided on said casing, defining a delivery chamber immediately down-stream of said compression section, and adapted to receive the compressed fluid from said compression section, —an intake zone from where the fluid to be compressed in the at least one cylinder of said compression section is introduced, —a delivery tap at the operational outlet of said compression chamber, characterized in that it comprises a check valve placed between said operational outlet of said compression chamber and said delivery tap, adapted to prevent the return of fluid into the compression chamber from said delivery tap.