Heating System Switch Valve Pressure Control
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Solution Overview
Problem
Existing heating systems require complex construction and control mechanisms, such as three-way valves, to maintain optimal heating circuit temperatures, which increases construction effort and complexity.
Innovation Solution
Incorporating a switch valve that opens based on a minimum pressure difference caused by the circulation pump, allowing the heating circuit temperature to be controlled by the pump's operation, eliminating the need for a three-way valve and simplifying the control system by using pulse width modulation for the circulation pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a three-way valve is used to control the bypass and maintain heating circuit temperature, then temperature control is achieved, but construction effort and device complexity increase
Solution Approach 1:
The patent extracts and eliminates the three-way valve from the system by using a simple switch valve that opens or closes based on pressure difference. This removes the complex bypass control mechanism while maintaining temperature control functionality through the circulation pump's pressure differential alone.
Solution Approach 2:
The switch valve automatically opens or closes based on the pressure difference generated by the circulation pump, without requiring external control signals or complex control mechanisms. The system uses its own operational parameters (pressure difference) to control the valve state.
2Temperature
If a three-way valve and differential pressure control valve are used to control return temperature, then temperature regulation is precise, but device complexity increases
Solution Approach 1:
The patent removes the differential pressure control valve and three-way valve combination, replacing them with a simple switch valve that responds to pressure difference. This eliminates the need for complex control mechanisms while maintaining return temperature regulation through pump-controlled pressure differential.
Solution Approach 2:
The system controls return temperature by changing the operational parameters of the circulation pump (speed, power) which directly affects the pressure difference. When the pressure difference exceeds the minimum threshold, the switch valve opens and integrates the heat consumer into the heating circuit, regulating temperature through pump parameter adjustment rather than complex valve control.
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 allows for efficient temperature regulation of the heating circuit without a three-way valve, reducing construction effort and complexity while maintaining precise temperature control through the circulation pump's speed or power adjustments.
Implementation Method 1
a switching valve (9) is provided in the return (3), which switches between a closed and an open switching state depending on the prevailing pressure difference
Implementation Method 2
A heating system (1) has a heat source (1) which is flow-connected to a consumer (4) via a flow (2) and a return (3)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A heating system is described, comprising a heating circuit connected to a heat source (1) and a consumer (4), a circulation pump (6), the flow (2) and return (3) of which are connected by a bypass (5), and a control device (10) for controlling the circulation pump (6) depending on the heating circuit temperature. To create advantageous design conditions, it is proposed that the heating circuit include a switching valve (9) that opens when a minimum pressure differential is applied, and which can be acted upon by the circulation pump (6) with a pressure differential that is above or below the minimum pressure differential depending on the heating circuit temperature.