Vacuum Pump Stator Column Buried Cooling Pipe

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Solution Overview

Problem

Conventional vacuum pumps face challenges in efficiently cooling the electrical equipment section, leading to potential overheating and damage, and require individual component manufacturing for different configurations, resulting in high costs and complex inventory management.

Innovation Solution

A vacuum pump design with a cooling water pipe buried in the stator column, allowing for localized cooling of the electrical equipment section and common component usage across varying pump sizes and shapes, reducing the risk of gas molecule deposition and simplifying installation and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cooling water pipe is installed on the outside of the vacuum pump and on the outside of the stator column, then the cooling water pipe can be easily installed and maintained, but the electrical equipment section and the cooling water pipe are greatly separated, causing loss of cooling effect and ineffective cooling

Engineering Contradiction:

Improveease of installation and maintenanceVSAvoidcooling effectiveness

Core Design Contradiction:

Ease of operationVSTemperature

Solution Approach 1:

The cooling water pipe is buried within the wall structure of the stator column, nesting the cooling system inside the pump housing. This allows the cooling pipe to be positioned close to the electrical equipment section without requiring external installation, thereby maintaining cooling effectiveness while keeping the overall structure integrated and maintainable.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The stator column wall acts as an intermediary medium that conducts cooling from the buried cooling water pipe to the electrical equipment section. The wall structure serves as a thermal pathway, transferring the cooling effect from the pipe location to the heat-generating components without direct contact.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Temperature

If the cooling force of the cooling water pipe is increased to reach the electrical equipment section, then the cooling effect can be improved, but the cooling effect also reaches the gas flow path, promoting liquefaction or solidification of gas and causing deposition

Engineering Contradiction:

Improvecooling effectivenessVSAvoidgas molecule deposition

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The cooling water pipe is strategically positioned and oriented within the stator column wall to provide localized cooling specifically to the electrical equipment section. The cooling effect is concentrated where needed (around the drive motor and magnetic bearings) rather than distributed throughout the entire pump, preventing excessive cooling of the gas flow path and avoiding gas deposition.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If individual components are manufactured for each vacuum pump size and shape, then the vacuum pump can be customized for specific applications, but the manufacturing cost and inventory complexity increase

Engineering Contradiction:

Improvecustomization for different sizes and shapesVSAvoidmanufacturing cost and inventory management

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The stator column is designed with a standardized structure that integrates the cooling water pipe burial system, allowing it to serve multiple functions: structural support, heat dissipation pathway, and cooling medium conduit. This universal design can be adapted to different vacuum pump sizes and configurations without requiring completely custom components, thereby reducing manufacturing complexity and inventory requirements while maintaining application-specific adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 buried cooling water pipe design enhances cooling efficiency for the electrical equipment, reduces the risk of gas molecule deposition, and enables the use of common components across different vacuum pump configurations, lowering manufacturing costs and simplifying troubleshooting.

Implementation Method 1

a cooling water pipe 104 is buried in the wall of a stator column 102a... cooling water or a refrigerant, such as a liquid or a gas, having a strong heat exchanging action is allowed to flow

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

cooling water or a refrigerant, such as a liquid or a gas, having a strong heat exchanging action is allowed to flow to cool the electrical equipment section

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS7753661B2Vacuum pump

Publication Date: 2010.07.13 EDWARDS JAPAN

AI summary

A vacuum pump evacuates gas from a chamber by coaction of a rotationally driven rotor and a stator. An electrical equipment section that rotates the rotor is housed within a stator column integral with the stator. A cooling water pipe is buried in a wall of the stator column near the electrical equipment section. One end of the cooling water pipe branches into a plurality of water inlet ports and the other end branches into a plurality of water outlet ports. One pair of water inlet and outlet ports opens to the outside of the vacuum pump at a side surface of the stator column and another pair of water inlet and outlet ports opens to the outside at the underside of the stator column.