Anti-freezing device for double-pipe heat exchanger and manufacturing method of anti-freezing device

A technology of an antifreeze device and a manufacturing method, which is applied in the directions of heat exchange equipment safety device, heat exchanger type, indirect heat exchanger, etc. Precise installation, good air-tightness and water-tightness

Active Publication Date: 2016-05-04
MAANSHAN NBWAVE HEAT ENERGY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art that the heat exchanger is easy to freeze, the structure is complex and the cost is high, the present invention provides a...

Method used

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  • Anti-freezing device for double-pipe heat exchanger and manufacturing method of anti-freezing device
  • Anti-freezing device for double-pipe heat exchanger and manufacturing method of anti-freezing device
  • Anti-freezing device for double-pipe heat exchanger and manufacturing method of anti-freezing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , an anti-freezing device for a casing heat exchanger includes an inner pipe 1 and an outer casing 2, wherein the casing heat exchanger is composed of a concentric inner pipe 1 and an outer casing 2, and the fluids in the inner pipe are respectively The inner tube 1 is a water pipe filled with water, the outer tube 2 is a fluorine tube, and the annulus between the inner tube and the outer tube is filled with fluorine.

[0041] Such as figure 2 Several inflatable elastic balls 3 are arranged at equal intervals inside the inner tube 1 shown. In this embodiment, an inflatable elastic ball 3 is provided for every quarter of the coil distance. The diameter of the inflatable elastic ball 3 described in the rubber ball is half the diameter of the inner tube of the casing heat exchanger. It is butyl rubber. Butyl rubber is a kind of synthetic rubber synthesized from isobutylene and a small amount of isoprene. It has good chemical stability and thermal stabil...

Embodiment 2

[0053] Embodiment 2 is basically the same as Embodiment 1, except that the total volume of the inflatable elastic ball 3 is different. Optimizing because it needs to obtain the best and most stable volume, it is calculated that the volume of the water body actually increases when it freezes, so that the total volume requirement of the inflatable elastic ball 3 can be calculated according to the pressure difference between the inside and outside of the pressure, according to the inflation elasticity The formula for calculating the volume of ball 3 is as follows:

[0054] V = C × e 1 - 1 + P 1 1 + P 2

[0055] The inflation press...

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PUM

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Abstract

The invention discloses an anti-freezing device for a double-pipe heat exchanger and a manufacturing method of the anti-freezing device and belongs to the field of heat pumps. The anti-freezing device for the double-pipe heat exchanger comprises the double-pipe heat exchanger which is composed of an inner pipe and an outer sleeve, wherein the inner pipe and the outer sleeve are concentric. A plurality of inflated elastic balls are arranged in the inner pipe at equal intervals. The inflated elastic balls are butyl rubber balls. Gas in the inflated elastic balls is nitrogen. Furthermore, the inflated elastic balls are fixed to the inner pipe in an adhesion mode. The diameter of each inflated elastic ball is half that of the inner pipe. In addition, the total volume of the inflated elastic balls is two fifths the internal volume of the inner pipe. By the adoption of the anti-freezing device for the double-pipe heat exchanger, freezing is unlikely to happen, the anti-freezing effect is achieved, the structure is simple, and the cost is low.

Description

technical field [0001] The invention relates to the field of heat pumps, in particular to an anti-freezing device for a casing heat exchanger and a manufacturing method thereof. Background technique [0002] For the heat pump industry, many units will be damaged by freezing in winter. There are two possibilities for freezing the unit: one is because the outdoor ambient temperature in winter is very low, and the temperature is lower than the freezing point of water. The water inside cannot be circulated, and the water is not discharged according to the requirements of the manufacturer. After a long time, the water in the water system may freeze. Once it freezes, the water heating heat exchanger of the heat pump hot water unit will be easily frozen. If the air source heat pump unit is running, if the humidity of the air is high, the air heat exchanger will The fins may be frosted. For this, the equipment manufacturer usually defrosts by reversely controlling the system. When...

Claims

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Application Information

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IPC IPC(8): F28D7/10F28F17/00
CPCF28D7/106F28F17/00F28F2265/14
Inventor 汪吉平孙金金刘洪华吴剑锋张冰冰
Owner MAANSHAN NBWAVE HEAT ENERGY SCI
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