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Device and method for controlling an orifice of a valve in an HVAC system

A control valve, regulating valve technology, applied in general control systems, control/regulation systems, heating and ventilation control systems, etc., capable of solving energy flow without measuring heat exchangers, determining energy flow functional dependencies, and not disclosing flow counting and other issues

Active Publication Date: 2021-09-24
BELIMO HOLDING AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the temperature difference between the supply temperature and the return temperature is used for control, neither a flow meter nor a function to measure the energy flow through the heat exchanger nor to determine the energy flow from the mass flow of the heating or cooling medium is disclosed depend on

Method used

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  • Device and method for controlling an orifice of a valve in an HVAC system
  • Device and method for controlling an orifice of a valve in an HVAC system
  • Device and method for controlling an orifice of a valve in an HVAC system

Examples

Experimental program
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Embodiment Construction

[0036] exist figure 1 In , reference numeral 100 refers to an HVAC system having a fluid circuit 101 comprising a fluid drive 3 (such as a pump), a valve 10, a heat exchanger 2 (such as a heat exchanger for heating or cooling a room) , which are interconnected by means of pipes. Depending on the embodiment, the valve is a rotary valve (eg ball valve) or a linear valve (eg piston or stem valve). The valve 10 is provided with an actuator 11 , such as an electric motor, for opening and closing the valve 10 and thus using different positions of the valve 10 (or size of the orifice) to control the orifice of the valve 10 and the flow through the fluid circuit 101 . Additionally, the fluid drive 3 may further vary the flow through the fluid circuit 101 . As schematically illustrated, the HVAC system 100 further comprises an optional building control system 4 and / or thermostat 5 unit with an electronic circuit (processor) 51 . Those skilled in the art will understand that the desc...

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PUM

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Abstract

For controlling an orifice of a valve (10) in an HVAC system (100) to regulate the flow (phi) of a fluid through a thermal energy exchanger (2) of the HVAC system (100) and adjust the energy transfer rate (I) of the thermal energy exchanger (2) in response to a demand value (d), the orifice of the valve (10) is controlled in a first mode of operation where the flow (phi) of the fluid through the thermal energy exchanger (2) is regulated within efficiency constraints on the energy transfer rate (I) with respect to an efficiency threshold value. Upon receiving an override signal (OS), the orifice of the valve (10) is controlled in a second mode of operation where the flow (phi) of the fluid through the thermal energy exchanger (2) is not regulated with respect to the first efficiency threshold value.

Description

technical field [0001] The present invention relates to a method and apparatus for controlling the orifice of a valve in a heating, ventilation and air conditioning (HVAC) system. In particular, the present invention relates to a method, control system for controlling the orifice of a valve in an HVAC system to regulate fluid flow through a heat exchanger of the HVAC system and to adjust the energy transfer rate of the heat exchanger in response to a demand value and computer program products. Background technique [0002] By adjusting the fluid flow through a heat exchanger of an HVAC system, it is possible to adjust the amount of energy exchanged by the heat exchanger, eg, adjust the rate of energy transfer by the heat exchanger to heat or cool a room in a building. When fluid transport through a fluid circuit of an HVAC system is driven by one or more pumps, flow is typically regulated by varying the orifice (opening) or position of a valve, eg manually or by means of an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/62F24F11/84F24F140/20
CPCF24F11/62F24F11/84F24F2140/20F24F11/63G05B19/042G05B2219/2614
Inventor R·H·休伯尔
Owner BELIMO HOLDING AG
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