Gas heat pump system

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Solution Overview

Problem

Gas heat pump systems face safety accidents and increased fuel consumption due to leakage of mixed gas from the supercharger, which leaks through fine gaps and is not effectively managed in existing configurations.

Innovation Solution

A gas heat pump system with a closed housing supercharger and a bypass line that recovers leaked mixed gas, using a check valve to prevent backflow and an air-fuel ratio sensor to adjust fuel supply, ensuring the reused gas is reintroduced efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If the supercharger operates at high rotational speed to compress mixed gas, then the compression efficiency and power output are improved, but mixed gas leaks through fine gaps between the rotary shaft and bearing

Engineering Contradiction:
Improvecompression efficiencyVSAvoidmixed gas leakage
Core Design Contradiction:
PowerVSObject-generated harmful factors

Solution Approach 1:

The patent captures the harmful leaked mixed gas through the collection chamber and redirects it through the bypass line back to the inlet port, converting the waste leakage into reusable fuel resource that improves overall system efficiency

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces a bypass line as an intermediary component that mediates between the collection chamber and inlet port, providing a controlled pathway for the leaked mixed gas to return to the system without direct release to atmosphere

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the mixed gas is allowed to leak out to outside through the housing, then the system structure remains simple, but safety accidents such as explosion or human gas intake occur

Engineering Contradiction:
Improvesystem structureVSAvoidsafety hazards
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the leaked mixed gas from the harmful environment (collection chamber) and separates it from the potential explosion zone, then redirects it through a controlled bypass line to the inlet port, eliminating the safety hazard while maintaining structural simplicity

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The closed housing creates a contained environment that prevents the flammable mixed gas from contacting external air and ignition sources, effectively creating a safer operational environment by isolating the hazardous substance

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

3Ease of operation

If the leaked mixed gas is discharged to outside, then the system operation remains simple, but fuel consumption increases due to loss of mixed gas

Engineering Contradiction:
Improvesystem operationVSAvoidfuel consumption
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The patent recovers the previously discarded leaked mixed gas through the collection chamber and bypass line system, redirecting it back to the inlet port for reuse, thereby eliminating fuel waste while maintaining simple continuous operation

Inventive Principle:
Principle #34Discarding and recovering

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 solution prevents safety accidents by containing leaked mixed gas and reduces fuel consumption by reusing it, enhancing the system's operational safety and efficiency.

Implementation Method 1

a closed housing with a closed portion at remaining portions other than an inlet port through which the mixed gas is introduced and an outlet port through which the mixed gas is discharged

Methodology Applied
Scientific EffectPhysical containment: Physical Containment

Implementation Method 2

a bypass line may be disposed between the closed housing and the inlet port of the supercharger to resupply the mixed gas in the closed housing to the inlet port of the supercharger

Methodology Applied
Scientific EffectGas flow:

Implementation Method 3

the bypass line may further include a check valve to block backflow of the mixed gas from the mixed gas supply line toward the closed housing

Methodology Applied
Scientific EffectOne-way flow control: Valve

Implementation Method 4

an air-fuel ratio sensor to adjust fuel supply, ensuring the reused gas is reintroduced efficiently

Methodology Applied
Scientific EffectGas composition detection:

Implementation Method 5

a mixer configured to mix air with fuel to generate mixed gas supplied to the gas engine

Methodology Applied
Scientific EffectMixing:

Implementation Method 6

a supercharger configured to supercharge the mixed gas supplied to the gas engine through the mixed gas supply line

Methodology Applied
Scientific EffectCompression: Compression

Data Source

PatentUS11402133B2Gas heat pump system
Publication Date: 2022.08.02 LG ELECTRONICS INC
  • US11402133B2 patent drawing
  • US11402133B2 patent drawing
  • US11402133B2 patent drawing

AI summary

The present invention relates to a gas heat pump system. A gas heat pump system according to one embodiment of the present invention comprises: a compressor for compressing a refrigerant; a gas engine for driving the compressor; a mixer for mixing air and fuel to generate a mixed gas to be supplied to the gas engine; a mixed gas supply line connected between the mixer and the gas engine; and a supercharger for supercharging the mixed gas supplied to the gas engine through the mixed gas supply line, wherein the supercharger comprises a sealed housing formed by sealing the remaining parts thereof other than an inlet port and an outlet port through which the mixed gas moves into and out of the housing, and a bypass line is provided between the sealed housing and the inlet port of the supercharger so as to resupply a mixed gas in the sealed housing to the inlet port of the supercharger. Therefore, the system can prevent a safety-related accident resulting from the leakage of the mixed gas out of the supplier and can reduce the amount of fuel consumption.