摘要:
The present invention refers to a hermetic compressor and, more specifically, a hermetic compressor comprising a centrifugal pump (1) to provide oil for the moving parts of said compressor. In the compressor of the present invention, the vertical shaft (7) extends axially from the rotor to form a free end (8) in its inferior portion, and said free end (8) is sized to be received in a corresponding end (12) of the centrifugal pump (1).
摘要:
A refrigeration system having a compressor with a check valve on the high pressure side to prevent refrigerant migration when the compressor shuts down; the improvement comprising a slot at the discharge valve plate forming an equalizing volume to provide gas leakage to the low pressure side during a stoppage so as to reduce starting torque.
摘要:
The mounting arrangement is applied to a refrigeration compressor having a shell (1) externally carrying energizing pins (2) and comprises: a connector (10) to be mounted to the shell (1) and having a non-electric conducting base body (11) which houses and retains electric terminals (4) attached to an electric supply cable (3) and which are designed to fit said energizing pins (2), one of the parts of shell (1) and base body (11) of the connector (10) carrying locking means (20) to be engaged to respective locking receiving means (30) provided in the other part, when the connector (11) is mounted to the shell (1); and an elastic sealing means (40) carried by one of the parts of shell (1) and connector (11) and to be pressed between said parts, around the energizing pins (2), when the connector (11) is mounted to the shell (1).
摘要:
Centrifugal oil pump for variable speed hermetic compressors, comprising: a hermetic shell (1), which lodges therewithin, a cylinder block (3), supporting a vertical eccentric shaft (5), whereto is mounted the rotor (8) of an electric motor (6), the eccentric shaft (5) being provided with at least one oil channel (9), having a lower end (9b), opened to a lower end (5b) of the eccentric shaft (5), wherein the eccentric shaft-rotor assembly attaches, at its lower part, an upper extension (12) of a pump rotor (10) and a tubular sleeve (20), attached to an inertial portion of the compressor and surrounding at least the portion of said pump rotor (10) external to the rotor (8), said pump rotor (10) presenting a centrifugation region (15), radially extending beyond the edges of the lower end (5b) of the eccentric shaft (5) and having a lower end nozzle (10b) that is permanently immersed in the oil sump (2), which is internally defined at the bottom of the shell (1) and with at least an upper radial nozzle (11b), communicating with at least an oil conducting axial channel (18), which communicated with the lower end of the oil channel (9) through at least one dragging duct (14), which is longitudinally provided through the upper extension (12) of the pump rotor (10).
摘要:
The mounting arrangement is applied to a refrigeration compressor having a shell (1) externally carrying energizing pins (2) and comprises: a connector (10) to be mounted to the shell (1) and having a non-electric conducting base body (11) which houses and retains electric terminals (4) attached to an electric supply cable (3) and which are designed to fit said energizing pins (2), one of the parts of shell (1) and base body (11) of the connector (10) carrying locking means (20) to be engaged to respective locking receiving means (30) provided in the other part, when the connector (11) is mounted to the shell (1); and an elastic sealing means (40) carried by one of the parts of shell (1) and connector (11) and to be pressed between said parts, around the energizing pins (2), when the connector (11) is mounted to the shell (1).
摘要:
Oil pump for a variable speed hermetic compressor, comprising: a hermetic shell (1), which defines a lubricant oil sump (2) at its bottom and which lodges therewithin a cylinder block (3), supporting a vertical eccentric shaft (5), which carries an electric motor rotor (8), said eccentric shaft (5) being provided with at least one oil channel (9), having an upper end (9a) opened to the external part of the upper median portion of the eccentric shaft (5), said eccentric shaft (5) supporting at its lower end (5b) a pump rotor (10); at least one oil conducting channel (20), which is machined to the body of said rotor (8) and which presents a lower end opening (20b) facing the pump rotor (10) and an upper end opening (20a) for oil discharge to said oil channel (9), said oil conducting channel (20) having at least the part of its length, that includes the upper end opening (20a), radially spaced in relation to the eccentric shaft (5); a stationary oil collecting means (30), which is attached to the cylinder block (3) and which is provided with an annular region for receiving all the oil coming from each oil conducting channel (20); and at least one lubricant oil feeding means (31) that discharges oil to the oil channel (9).
摘要:
A linear motor (10), a linear compressor (100), a method of controlling a linear compressor (100), a cooling system (20) and a system of controlling a linear compressor (100) to operate a linear compressor (100) in resonance in it's the greatest possible efficiency throughout its operation are described. One of the ways of achieving these objectives is by means of a linear compressor (100) applicable to a cooling system (20), the linear compressor (100) comprising a piston (1) driven by a linear motor (10), the piston (1) having displacement range controlled by means of a controlled voltage (VM), the controlled voltage (VM) having a voltage frequency (φP) applied to the linear motor (10) and adjusted by a processing unit (22), the range of piston (1) displacement being dynamically controlled in function of a variable demand of the cooling system (20), the linear compressor (100) having a resonance frequency, the processing unit (22) adjusting the range of piston (1) displacement, so that the linear compressor (100) will be dynamically kept on resonance throughout the variations in demand of the cooling system (20).
摘要:
The present invention relates to a cooling system of a refrigerator, particularly of a refrigerator including a refrigeration compartment and a freezer comprising a compressor attached to at least one condenser by a segment of a refrigerant tube, wherein a first refrigerant line leaves from the condenser and returns to the compressor, and a second refrigerant line leaves from the condenser and returns to the compressor. In the preferred embodiment of the present invention, the compressor has at least two suction inlets, wherein the first refrigerant line is connected to the first inlet and the second refrigerant line is connected to the second inlet, and both inlets have each a suction valve. In the optional embodiment of the present invention, the fluid compressor comprises at least one fluid selection device directly connected to the at least one suction inlet, and the fluid selection device receives at least two supply lines, and is able to selectively switch pressurized fluid from one of them, to the suction inlet of the fluid compressor.
摘要:
A linear motor (10), a linear compressor (100), a method of controlling a linear compressor (100), a cooling system (20) and a system of controlling a linear compressor (100) to operate a linear compressor (100) in resonance in it's the greatest possible efficiency throughout its operation are described. One of the ways of achieving these objectives is by means of a linear compressor (100) applicable to a cooling system (20), the linear compressor (100) comprising a piston (1) driven by a linear motor (10), the piston (1) having displacement range controlled by means of a controlled voltage (VM), the controlled voltage (VM) having a voltage frequency (φP) applied to the linear motor (10) and adjusted by a processing unit (22), the range of piston (1) displacement being dynamically controlled in function of a variable demand of the cooling system (20), the linear compressor (100) having a resonance frequency, the processing unit (22) adjusting the range of piston (1) displacement, so that the linear compressor (100) will be dynamically kept on resonance throughout the variations in demand of the cooling system (20).
摘要:
A flow restrictor (1) for use in bearing formation between a piston (2) and a cylinder (3) of a gas compressor (4). The gas compressor (4) includes a protective pad (5) that externally surrounds the cylinder (3), and an inner cavity (6) is disposed between the protective pad (5) and the cylinder (3), fluidly fed by a discharge flow from a compression movement exerted by the piston (2). The gas compressor (4) further includes a bearing formation gap (7) that separates an outer wall of the piston (2) and an inner wall of the cylinder (3). A flow restrictor (1) is provided with a housing (12) that fluidly associates the inner cavity (6) to the bearing formation gap (7). The flow restrictor (1) includes a limiting tube (8) associated with the housing (12), provided with at least one restraining portion provided with a cross section sized to limit the gas flow from the inner cavity (6) to the bearing formation gap (7).