Abstract:
The reciprocating compressor is made with yoke units which connect opposite pairs of pistons while eliminating play between the yoke units and sliding block. Each yoke unit includes a pair of shoes which are removably secured to the pistons and which are adapted to guide the sliding block moved by a crankshaft. Each yoke unit also includes a clamp ring which surrounds the shoes and which biases the shoes towards the sliding block. The shoes are removably secured to the pistons to permit the yoke unit to be readily disassembled. Bow-shaped clamping members may also be employed within each yoke unit to further bias the clamp ring against the shoes.
Abstract:
Zahnradmaschine (10) mit wenigstens zwei Zahnrändem, die im Außeneingriff miteinander kämmen, wobei deren Drehachsen parallel zu einer Längsrichtung (12) ausgerichtet sind, wobei die Zahnräder von einem Gehäuse (20) umgeben sind, welches einen Hauptkörper (30) umfasst, wobei der Hauptkörper (30) eine Innenumfangsfläche (31) mit einem ersten Abschnitt (32) aufweist, der entlang der Längsrichtung (12) mit einer konstanten Querschnittsform ausgebildet ist, wobei jedem Zahnrad ein zweiter Abschnitt (33) der genannten Innenumfangsfläche (31) zugeordnet ist, der quer zur Längsrichtung (12) gegenüber dem ersten Abschnitt (32) nach außen versetzt angeordnet ist, wobei in Längsrichtung (12) neben wenigstens einem Zahnrad, wenigstens ein zugeordneter Lagerkörper angeordnet ist, welcher an der genannten Innumfangsfläche (31) anliegt, wobei das wenigstens eine Zahnrad, in dem wenigstens einen zugeordneten Lagerkörper drehbar gelagert ist. Erfindungsgemäß ist an der genannten Innenumfangsfläche (31) im ersten Abschnitt (32) wenigstens eine geradlinige Nut (70) vorgesehen, welche an einem zugeordneten zweiten Abschnitt (33) endet.
Abstract:
A valve assembly has a discharge valve member and a suction valve member. One of these valve members includes a reed valve. The reed valve has a tab which includes a localized through hardened area which provides a wear surface. The remainder to the reed valve has a lower hardness to provide fatigue strength to the reed valve.
Abstract:
A pumping assembly is provided which is suitable for use in a variety of dosing pumps. The pumping assembly comprises a pump body with a pump bore, and a sleeve fixed within the pump bore. The sleeve has a first end, a second end and a sleeve bore. A plunger is adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore. The sleeve has at least one port to allow fluid flow through a wall of the sleeve. The, or each, port is elongated in a direction substantially orthogonal to a direction of reciprocation.
Abstract:
PROBLEM TO BE SOLVED: To improve compression efficiency by applying treatment to a valve plate instead of providing a new member or modifying structure so as to restrict temperature rise of intake coolant gas. SOLUTION: A rear housing 14 provided with an intake chamber 24 and a delivery chamber 25 is connected to an end surface of a cylinder block 11 through a valve/port forming body 13. The valve/port forming body 13 is composed of the valve plate 26, an intake valve plate 27, and a delivery valve plate 28. In the valve plate 26, an intake port 29 and a delivery port 30 are formed. The valve plate 26 comprises a magnetic soft iron plate or a cold rolled steel plate, to which soft nitrification treatment is applied. In the valve plate 26, nitride layers 26a are formed on both surfaces of it. The nitride layer 26a is formed in such thickness that heat conductivity of the valve plate 26 is 60 W/mK or less. The soft nitrification treatment is applied by a solt bath nitrification process. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A pumping assembly is provided which is suitable for use in a variety of dosing pumps. The pumping assembly comprises a pump body with a pump bore, and a sleeve fixed within the pump bore. The sleeve has a first end, a second end and a sleeve bore. A plunger is adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore. The sleeve has at least one port to allow fluid flow through a wall of the sleeve. The, or each, port is elongated in a direction substantially orthogonal to a direction of reciprocation.
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure-sending assembly suitable for use in a variety of dosing pumps.SOLUTION: The pressure-sending assembly includes a pump body having a pump bore and a sleeve fixed into the pump bore. The sleeve has a first end, a second end and a sleeve bore. A plunger is advanced into the first end of the sleeve and reciprocates in the sleeve bore. The sleeve has at least one port which can make fluid flow while making it pass through the wall of the sleeve. The port or each port is oblong in a direction substantially orthogonal to a reciprocating direction.
Abstract:
A scroll compressor may include a casing (110) having a sealed inner space; a drive motor (120) provided in the inner space of the casing to generate a rotational force; a rotating shaft (160) coupled to a rotor of drive motor to rotate; an orbiting scroll (150) formed of an aluminum material, and coupled to the rotating shaft to perform an orbiting movement; a fixed scroll (140) coupled to the orbiting scroll to form a compression space consisting of a suction chamber, an intermediate pressure chamber and a discharge chamber; and a rotation prevention member (170) coupled to the orbiting scroll, and formed of a sintered metal. As a result, it may be possible to prevent an Oldham ring from being worn out due to contact with the orbiting scroll. Furthermore, a weight loss portion or wear-resistant coating layer may be formed on a part of the Oldham ring, thereby suppressing a vibration noise of the compressor from being increased due to a weight increase of the Oldham ring.