Closed fluid circulation system and its expansion control method

A technology of liquid circulation and circulation system, which can be used in heating systems, hot water central heating systems, heating methods, etc., and can solve problems such as labor and humidity.

Inactive Publication Date: 2003-09-17
SPIRO RES BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To maintain proper operation of the system, the pressure should be checked regularly and the fluid replenished if necessary, which is laborious and wet work

Method used

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  • Closed fluid circulation system and its expansion control method
  • Closed fluid circulation system and its expansion control method
  • Closed fluid circulation system and its expansion control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 The system shown comprises a cylindrical housing 1 with a top cover 2 and a bottom cover 3, the volume of which is greater than the total possible liquid expansion of a closed circulation system.

[0022] A cylindrical head 4 with a short pipe 5 is installed on the top cover 2, and the short pipe 5 has a valve 6, one end of which is connected with the water pipe 7, and the other end is connected with a control lever 8 that can be turned downward to open the valve 6 . A float bar 9 is hung on the end of the control rod 8 away from the valve 6, and the float bar 9 is connected with the float located below the perforated plate 11, and the float bar 9 can slide freely in the hole of the perforated plate. The head 4 also has an exhaust valve 12 for overpressure maintenance.

[0023] The T-shaped pipe fitting 13 is connected on the bottom cover 3, and its short pipe 14 is connected into a closed liquid circulation system (not shown in the figure) in a straight line...

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PUM

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Abstract

PCT No. PCT/NL96/00219 Sec. 371 Date Oct. 13, 1998 Sec. 102(e) Date Oct. 13, 1998 PCT Filed Jun. 3, 1996 PCT Pub. No. WO96/38694 PCT Pub. Date Dec. 5, 1996A method for expansion control in a closed fluid circulation system with varying temperature, in which system air is drawn from the circulating fluid through the formation of an air head wherein air to be withdrawn is collected and from which air can be blown off, controlled by a valve, to the environment or a receiving space, while further off, measures are taken for taking up, when the temperature varies, an attendant expansion and shrinking of the fluid within the closed system, and measures for enabling adding fluid to the system, which fluid is withdrawn from an external stock of fluid under pressure, and the air head volume is measured and when a predetermined value is exceeded, a fluid valve is opened through which fluid is introduced into the air head until the volume of the air head is substantially equal to the predetermined value and the fluid valve is closed.

Description

technical field [0001] The invention relates to an expansion control method of a temperature-variable closed liquid circulation system and a closed liquid circulation system capable of implementing the method. Background technique [0002] Such methods are familiar in central heating engineering, and measures to compensate for the expansion and contraction of liquids during temperature changes usually consist of an expansion tank divided by a diaphragm into two separate spaces, one connected to the piping network and the other Filled with gas, the gas is compressed and expanded by moving the diaphragm, which can compensate the change of liquid volume caused by the change of liquid temperature. Automatic venting can be achieved using a float controlled valve, US Patent 4,027,691 is one such example. [0003] In such liquid circulation systems, liquid leakage is practically always present, although usually only to a very slight extent. Due to the small amount of liquid leakag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D3/10F24D19/08
CPCF24D3/10F24D19/083Y10T137/3099Y10T137/3109F24D19/10
Inventor 弗朗西斯库斯·罗费尔森
Owner SPIRO RES BV
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