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Convergent-divergent valve for boiler

A technology of contraction and expansion, boiler, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of easy corrosion of connection parts, large economic burden for users, inability to solve heating water shrinkage, expansion pressure changes, etc.

Inactive Publication Date: 2007-06-06
崔诚桓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the pressure type expansion tank 5 installed in the conventional air cut-off type boiler cannot solve the pressure change problem caused by the contraction and expansion of the heating water due to the pressure drop of the nitrogen gas.
[0009] Also, corrosion is prone to occur at the connection part of the supplementary heating water, causing malfunctions in the product itself, thus causing frequent boiler system problems
Also, since safety valves, automatic air vents, and pressure gauges are additionally installed on the air cut-off boiler, the cost of the overall equipment and failure maintenance have brought a great economic burden to the user.

Method used

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  • Convergent-divergent valve for boiler
  • Convergent-divergent valve for boiler
  • Convergent-divergent valve for boiler

Examples

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Embodiment Construction

[0021] Fig. 2 is an exploded view of a contraction expansion valve for a boiler in the present invention, and Fig. 3 is a cross-sectional view of a contraction expansion valve for a boiler in the present invention.

[0022] Referring to Fig. 2 and Fig. 3, the contraction and expansion valve 100 is formed with an inlet 12 connected to the heat exchanger 1 at the lower part of its main body 10, and is divided into upper and lower spaces inside the main body 10, forming a space for heating. The pressure chamber 16 and the flow path chamber 14 through which water flows.

[0023] The diameter of the pressure chamber 16 is larger than that of the flow passage chamber 14 , and the outflow port 18 extending to the outside of the pressure chamber 16 communicates with the pressure chamber 16 .

[0024] The upper part of the pressure chamber 16 is provided with a cover body 20 , and the two sides of the cover body 20 are formed with handle ears which can prevent slipping from the hands o...

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PUM

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Abstract

A contraction-expansion valve for boiler is disposed between a heat exchanger and an open expansion tank mounted in the boiler and is independent from the pressure change caused by the contraction and expansion of the heating water flowing inside the guide tube on the heat exchanger. Keeping the pressure of the boiler heat exchanger in a certain range can make users use the boiler safely and can also exhaust the gas produced by the contraction and expansion change of the heating water into the outside, so as to increase the heat-exchanging efficiency of the boiler heat exchanger.

Description

technical field [0001] The invention relates to a shrinkage expansion valve for a boiler, in particular to a boiler which is connected with a heat exchanger and inputs or outputs heating water into or out of an open expansion tank according to the pressure change caused by the shrinkage and expansion of the heating water, thereby improving the operating effect of the boiler Use a contraction-expansion valve. Background technique [0002] Usually, the boiler uses gas or gasoline as fuel, and uses the combustion heat generated during the combustion process to heat the heat medium for heating and the like. [0003] The substances used as the heat medium of the above-mentioned boiler include water, air, etc., among which water is the most commonly used. [0004] As the temperature changes, the volume of water will shrink or expand, and the expansion tank that stores the amount of change in the process of shrinkage and expansion. There are two types of expansion tanks: air open ...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K31/18
Inventor 崔诚桓
Owner 崔诚桓