Integrated Buffer Chamber Pump Layout for Narrow-Space Installation
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Solution Overview
Problem
Conventional pumps with buffer chambers either have a high number of parts and complex assembly or increase in size due to the integral formation of the buffer chamber, making them difficult to install in narrow spaces.
Innovation Solution
A pump design where the buffer chamber is integrally formed within the casing, with a transverse arrangement of the delivery and buffer chambers relative to the pump chamber, reducing the overall size in the reciprocating direction and minimizing the number of parts and seal points, and incorporating a tapered communication passage to reduce fluid resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a buffer chamber is formed by a buffer tank discrete from the casing, then the buffer chamber can be integrated with the pump, but the number of parts increases and the assembly becomes complicated
Solution Approach 1:
The buffer chamber is integrated into the casing as a unified structure rather than a separate component. The casing is designed with an internal buffer chamber space that is formed during the same manufacturing process, eliminating the need for separate buffer tanks and reducing assembly steps.
2Adaptability or versatility
If a buffer tank is used as a discrete member, then the buffer chamber can be added to the pump, but sealing between the discharge port and buffer tank inlet becomes complex and leakage may occur
Solution Approach 1:
The discharge port and buffer chamber inlet are formed as integrated features of the same casing structure. The internal geometry of the casing provides a continuous fluid passage from the pump chamber through the discharge port directly into the buffer chamber, eliminating external sealing interfaces and potential leakage points.
3Adaptability or versatility
If the buffer chamber is located adjacent to the pump chamber in the reciprocating direction, then the buffer chamber can be integrally formed in the casing, but the casing increases in size in the reciprocating direction
Solution Approach 1:
The buffer chamber is positioned in the radial direction of the casing rather than extending in the reciprocating (axial) direction. The piston reciprocates along the axial direction while the buffer chamber is formed as a radial cavity within the casing wall, allowing both functions to coexist without increasing the overall axial length of the pump.
4Adaptability or versatility
If the casing increases in size in the reciprocating direction, then the buffer chamber can be integrally formed, but the installation area increases making it difficult to place in narrow spaces
Solution Approach 1:
The buffer chamber utilizes the radial thickness of the casing wall rather than extending axially. This dimensional reconfiguration allows the buffer chamber to be formed within the existing casing envelope, maintaining a compact axial profile suitable for narrow installation spaces while still providing adequate buffer volume.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for a compact pump installation with reduced fluid pulsation and enhanced sealing reliability, enabling efficient fluid conveyance without increasing the casing size in the reciprocating direction.
Implementation Method 1
a tapered communication passage to reduce fluid resistance
Data Source
AI summary
The pump has a casing accommodating a piston and a driving part. The casing has a first casing member having a driving part retaining portion retaining the driving part, a second casing member fixedly stacked on the first casing member in the reciprocating direction of the piston, and a cylindrical pump chamber peripheral wall member disposed around a head of the piston. The second casing member has an end wall portion extending in a transverse direction substantially perpendicular to the reciprocating direction. A pump chamber, a delivery chamber, and a buffer chamber are defined between the first casing member and the end wall portion of the second casing member. The pump chamber, the delivery chamber, and the buffer chamber are disposed side-by-side in the transverse direction.