Compensation Pipe Layout for Self-Regulating Heat Pump Throttling
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Solution Overview
Problem
Heat pumps with adjustable throttles incur additional costs, energy losses, and noise due to spontaneous evaporation and susceptibility to failure, especially when designed for mass utilization.
Innovation Solution
A thermodynamic device utilizing a compensation pipe with a curved portion and a self-regulating gravitational throttle, where the inlet is higher than the outlet, to manage pressure differences between liquid containers, eliminating the need for adjustable throttles and leveraging a steam barrier for reduced installation height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adjustable throttle is used to control working fluid flow in the drain, then the heat pump can accommodate varying power requirements and temperature spreads, but additional costs, energy losses, noise, and susceptibility to failure increase
Solution Approach 1:
The invention extracts and eliminates the throttle component from the system by using a drain that is always open. The working fluid flow is controlled not by a throttle but by the natural pressure difference between the evaporator and the drain, thereby removing the source of energy losses from spontaneous evaporation while maintaining the ability to accommodate varying operating conditions.
Solution Approach 2:
The drain system operates autonomously without requiring active control components. The working fluid flows through the always-open drain driven by pressure differences that naturally arise during operation, eliminating the need for throttles, actuators, or control systems that would otherwise be required to regulate flow.
2Adaptability or versatility
If an adjustable throttle is used for pressure control in the drain, then the system can handle varying working fluid transport requirements, but additional costs and control complexity increase
Solution Approach 1:
The invention removes the throttle and its associated control system from the drain assembly. The drain is designed to be always open, allowing working fluid to flow freely based on natural pressure gradients, thereby dramatically simplifying the device structure while maintaining adaptability to varying flow requirements.
Solution Approach 2:
The drain system self-regulates working fluid flow without external control. The always-open drain responds automatically to pressure differences generated during operation, eliminating the need for complex control mechanisms while maintaining the ability to handle varying power requirements and temperature spreads.
3Stress or pressure
If an adjustable throttle is installed in the drain, then pressure control is achieved, but noise from spontaneous evaporation increases
Solution Approach 1:
The invention extracts the throttle component that causes noise-generating spontaneous evaporation. By using an always-open drain, the system eliminates the rapid pressure equalization that occurs through throttles, thereby removing the primary source of noise while maintaining necessary pressure control through natural pressure gradients.
4Adaptability or versatility
If an adjustable throttle is used, then working fluid flow can be regulated, but susceptibility to failure increases
Solution Approach 1:
The invention removes the throttle and its control system from the drain assembly, eliminating components that are prone to failure. The always-open drain design relies on passive pressure-driven flow, removing mechanical parts that can wear, malfunction, or require maintenance, thereby significantly improving reliability while maintaining flow regulation capability.
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 solution reduces energy losses, eliminates the need for costly and failure-prone adjustable throttles, and enhances evaporation efficiency by directly introducing pressure differences into the evaporator, while maintaining reliable pressure separation between containers.
Implementation Method 1
a compensation pipe permeable to the working fluid and including an inlet arranged within the second liquid container so as to define, during operation, a working fluid level within the second liquid container, and including an outlet arranged within the first liquid container so that working fluid can be transported from the inlet into the outlet, the inlet being arranged to be higher up than the outlet in the installation direction
Implementation Method 2
the compensation pipe including a curved portion, the lowest area of which is arranged below the outlet during operation, and the thermodynamic device being configured to transport working fluid from the first liquid container forward to the second liquid container during operation and to transport working fluid back from the second liquid container to the first liquid container through the compensation pipe
Data Source
AI summary
A thermodynamic device includes a first liquid container configured to maintain a first pressure during operation, the first liquid container being partially filled with a working fluid during operation, a second liquid container configured to maintain a second pressure during operation, the second pressure being higher than the first pressure, the second liquid container being partially filled with the working fluid during operation; and a compensation pipe permeable to the working fluid and including an inlet arranged within the second liquid container so as to define, during operation, a working fluid level within the second liquid container, and including an outlet arranged within the first liquid container so that working fluid can be transported from the inlet into the outlet, the inlet being arranged to be higher up than the outlet in the installation direction.