Base-Mounted Heat Pump Water Heater With Isolated Airflow Layout
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Solution Overview
Problem
Conventional heat pump water heaters face challenges in increasing reliability and thermal efficiency, reducing noise generation, and minimizing undesirable heat transfer to cooled air flow.
Innovation Solution
A specially designed endothermic base-mounted heat pump water heater with a refrigerant-based heat pump circuit, where the condenser coil is positioned higher than the compressor, and the air intake is elevated, enhancing heat transfer and reducing noise by isolating noise-generating components within the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heat pump circuit is conventionally constructed, then it can provide water heating function, but the reliability and thermal efficiency are insufficient
Solution Approach 1:
The patent positions the condenser coil in a higher elevation than the compressor, creating a vertical dimensional arrangement. This spatial configuration allows hot refrigerant to naturally flow downward to the compressor while preventing cooled air from contacting the tank, simultaneously improving reliability through proper refrigerant drainage and maintaining thermal efficiency by isolating heat transfer paths.
Solution Approach 2:
The patent divides the heat pump system into spatially separated functional zones: the condenser coil is positioned above the tank while the compressor and air intake are located below. This segmentation isolates the hot refrigerant pathway from the cooled air pathway, preventing unwanted heat transfer and improving overall system efficiency.
2Object-affected harmful factors
If the heat pump circuit operates conventionally, then it can cool air for dehumidification, but noise is generated and heat is undesirably transferred to the cooled air
Solution Approach 1:
The patent extracts the noise-generating compressor and air intake components from the main tank assembly and relocates them to a separate base structure below. This physical separation removes the primary noise source from the water heater's operational space while also preventing the cooled air from contacting the tank and absorbing unwanted heat.
Solution Approach 2:
The patent uses vertical spatial separation by positioning the air intake and compressor in the horizontal base plane below the tank, while the condenser coil remains elevated above the tank. This dimensional arrangement creates distinct thermal zones that prevent heat transfer to cooled air while isolating noise sources.
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
This design improves compressor reliability, enhances heat exchange, reduces noise, and minimizes heat transfer to cooled air, resulting in a more efficient and quieter water heating system.
Implementation Method 1
a condenser coil positioned above the tank and in heat transfer relationship with the tank
Implementation Method 2
an evaporator coil positioned below the tank and adapted to receive the cooled air
Implementation Method 3
an evaporator coil positioned below the tank and adapted to receive the cooled air
Data Source
AI summary
An endothermic heat pump water heater has a water tank supported atop a hollow base, a heat pump circuit operable to provide primary heat to water in the tank, and an electric resistance heating element operable to provide secondary heat to the water. The heat pump circuit includes refrigerant tubing in which a compressor disposed within the base, a condenser in heat exchange external contact with the tank, a refrigerant expansion device, and an evaporator disposed within the base are connected in series. A vertical duct, external to the tank, has an inlet adjacent the upper tank end, and a fan is operative to sequentially flow air inwardly through the inlet, downwardly through the duct into the base, across the compressor, across the evaporator, and then outwardly from the base.