Multi-stage inner pipe freeze-proofing system, freeze-proofing heat exchanger and application

An antifreeze system and heat exchanger technology, applied in damage protection, heat exchange equipment, evaporators/condensers, etc., can solve the problems of high cost of antifreeze, large pollution, inability to power off operation, etc., and achieve good chemical stability and thermal stability, good safety and stability, good air tightness and water tightness

Pending Publication Date: 2017-07-28
MAANSHAN NBWAVE HEAT ENERGY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems in the prior art that the antifreeze used in the prior art is high in cost, heavy in pollution, and unable to

Method used

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  • Multi-stage inner pipe freeze-proofing system, freeze-proofing heat exchanger and application
  • Multi-stage inner pipe freeze-proofing system, freeze-proofing heat exchanger and application
  • Multi-stage inner pipe freeze-proofing system, freeze-proofing heat exchanger and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] Such as figure 1 As shown, a multi-stage inner tube antifreeze system includes an outer tube 1, an inner tube 2 is arranged inside the outer tube 1, and the inner tube 2 is a hollow elastic tube. The inner tube 2 is provided with one or more partitions 201. The hollow part of the elastic tube is isolated from the external liquid by the tube wall. If the outside is water, the external water will not enter the inner hollow due to the water barrier effect of the elastic tube. The part ensures the space of the hollow part. The partition 201 allows the inner tube to be set to several hollow parts. When one part is broken or damaged, the remaining hollow parts can offset the expansion volume of icing, which is safe it is good.

[0037] The elastic hose here can be a hose, and the inner tube 2 is convenient to penetrate into the outer tube 1. Of course, other types of elastic pipes that can meet the requirements according to the requirements. In the case of wate...

Example Embodiment

[0041] Example 2

[0042] Heat exchangers are generally used for refrigerants and water in heat pumps or air-conditioning fields. When the temperature is low during defrosting, refrigeration and winter, the water side of the heat exchanger may be damaged due to the volumetric expansion of water freezing. Add inflatable silica gel or compressible pearl cotton tube and other similar materials inside the heat exchanger. When the internal volume of the water side of the heat exchanger expands due to icing, the inflatable silicone tube or pearl cotton tube and other similar materials can be compressed. The pressure on the water side of the heat exchanger is reduced to prevent the heat exchanger from bursting.

[0043] The aforementioned antifreeze system is used in the field of heat exchangers, such as figure 2 As shown, the tube-in-tube heat exchanger consisting of a concentric inner tube and an outer tube is the outer tube 1. The outer tube 1 is provided with a sealed and compressib...

Example Embodiment

[0046] Example 3

[0047] Example 3 is basically the same as Example 2, except that: image 3 As shown, the fixed joint 4 includes a connection port 401, the inner tube 2 is sleeved on the connection port 401, the middle of the connection port 401 is connected, and the connected connection port 401 connects the hollow space of the inner tube 2 close to the connection port 401 with the outside atmosphere . When working, under normal conditions, the inner tube 2 is not high due to the low water pressure, and the inner tube 2 is kept hollow due to the certain strength of the tube. The hollow air in the hollow space near the connection port 401 communicates with the outside air. When the temperature decreases, When the water in the tube freezes, the volume of the water increases due to freezing, and the increased volume squeezes the inner tube 2, and the air in the inner tube 2 is discharged into the atmosphere through the hollow opening of the connection port 401, and the inner tub...

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PUM

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Abstract

The invention discloses a multi-stage inner pipe freeze-proofing system, a freeze-proofing heat exchanger and application, belongs to the field of heat pump systems, and aims at solving the technical problem that a water pipe in a heat exchanging pipe is iced and cracked in case that an existing heat exchanger is powered off and outside heat cannot be utilized. The multi-stage inner pipe freeze-proofing system comprises an outer pipe in which an inner pipe is arranged, wherein the inner pipe is a hollow elastic hose; more than one partition is arranged in the inner pipe. Under the condition that water is charged, the inner pipe contracts to counteract the expanding volume caused by icing, so that the outer pipe can be prevented from being expanded and cracked due to icing; a hollow part of the inner pipe is full of inertial gas, so that the gas tightness and the water tightness are high; the gas is stable, and thus the safety and the stability are high; the inner pipe can only be influenced by the external pressure; one end of the inner pipe is provided with a fixed connector which is fixed to the outer pipe, and the other end of the inner pipe is a closed end which extends into the outer pipe. The multi-stage inner pipe freeze-proofing system realizes efficient heat exchanging and freeze proofing, and is simple in structure, low in price, and convenient to mount.

Description

technical field [0001] The invention relates to the field of heat pump air conditioners, and more specifically relates to a multi-stage inner tube antifreeze system, antifreeze heat exchanger and application thereof. Background technique [0002] The casing heat exchanger used in the air conditioner is the heat exchange between the refrigerant and the water to realize its function. The casing heat exchanger of the existing heat pump water heater is composed of a refrigerant pipe and a casing. The refrigerant pipe is arranged in the casing. It is made into a coil shape, and the surface of the coil-shaped casing is provided with an insulating layer. During use, since the casing heat exchanger is installed outdoors, when the outdoor temperature is lower than 0°C, the water in the casing may freeze, causing the casing and refrigerant pipes to freeze and crack easily. Because there is water in the casing heat exchanger, there is a risk of freezing damage naturally. In winter, w...

Claims

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Application Information

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IPC IPC(8): F25B39/00F28F19/00
CPCF25B39/00F28F19/002F28F19/006
Inventor 汪吉平颜世峰武加耀孙金金刘洪华
Owner MAANSHAN NBWAVE HEAT ENERGY SCI
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