INTERNAL GEAR PUMP AND INTERNAL GEAR MOTOR

Organization Name

SHIMADZU CORPORATION

Inventor(s)

Takuya Kokabu of Kyoto-shi, Kyoto (JP)

Koichi Osamura of Kyoto-shi, Kyoto (JP)

INTERNAL GEAR PUMP AND INTERNAL GEAR MOTOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 18569804 titled 'INTERNAL GEAR PUMP AND INTERNAL GEAR MOTOR

The abstract describes an internal gear pump with specific features and innovations:

Internal gear pump with internal gear and external gear meshed together.
Filler piece partitions liquid feeding space into high and low pressure regions.
Sealing member covers end surfaces of gears to seal liquid feeding space.
Communication groove connects enclosed space with high pressure region.
Cross-sectional area of communication groove increases as rotation phase advances.

Potential Applications: - Hydraulic systems - Lubrication systems - Fuel transfer systems

Problems Solved: - Efficient liquid transfer - Pressure regulation - Leakage prevention

Benefits: - Increased pump efficiency - Enhanced pressure control - Reduced maintenance needs

Commercial Applications: Title: "Advanced Internal Gear Pump for Industrial Fluid Transfer" This technology can be used in various industries such as automotive, manufacturing, and agriculture for fluid transfer applications. The market implications include improved productivity and cost savings.

Prior Art: Readers can explore prior art related to internal gear pumps in the field of fluid dynamics and mechanical engineering.

Frequently Updated Research: Researchers are continually studying internal gear pump designs for enhanced performance and reliability.

Questions about Internal Gear Pump Technology: 1. How does the communication groove in the internal gear pump contribute to pressure regulation? - The communication groove allows for the transfer of fluid between the enclosed space and the high pressure region, aiding in pressure control.

2. What are the key advantages of using an internal gear pump over other types of pumps? - Internal gear pumps offer high efficiency, precise pressure control, and minimal leakage compared to other pump designs.

Original Abstract Submitted

An internal gear pump includes: an internal gear rotatably fitted in a body; an external gear inscribed in and meshed with the internal gear; a filler piece that partitions a liquid feeding space formed between the internal gear and the external gear into a high pressure region and a low pressure region; and a sealing member that covers both end surfaces of both the gears in a rotation axis direction and seals the liquid feeding space, in which a communication groove for communicating an enclosed space surrounded by the filler piece and a tooth groove of at least one of the gears with the high pressure region is formed, and the communication groove is formed such that a cross-sectional area communicating with the enclosed space continuously increases and an increase rate thereof acceleratively increases as a rotation phase of both the gears advances.