Floor heating drainage anti-scale oxygen-blocking pipe

Abstract

The utility model discloses a floor heating drainage scale prevention oxygen barrier pipe which comprises a drainage scale prevention layer, a working pipe body, an adhesive layer and an oxygen barrier layer which are sequentially arranged from inside to outside, the cross section of the inner wall of the working pipe body is in a wave ring shape, the drainage scale prevention layer is evenly arranged along the inner wall of the working pipe body, and the drainage scale prevention layer is made of activated PTFE. The material of the working pipe body is PE-RT, the thickness of the hydrophobic anti-scaling layer is 8-10% of the average thickness of the oxygen barrier pipe, the material of the working pipe body is PE-RT, the average thickness of the working pipe body is 82-88% of the average thickness of the oxygen barrier pipe, the material of the oxygen barrier layer is EVOH, and the thickness of the oxygen barrier layer is 2-2.6% of the average thickness of the oxygen barrier pipe. According to the oxygen blocking pipe, the inner wall area is increased, the incrustation thickness acceleration is slowed down, and the heat transfer efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen barrier pipe technical field especially relates to a ground heat dissipation scale prevention oxygen barrier pipe. BACKGROUND

[0002] In modern ground heat system, ground heat pipe material is one of the key components of heat energy transmission, and its performance directly affects the efficiency and service life of the system. The pipe material in the ground heat system is in contact with water for a long time, especially under high temperature conditions, oxygen can penetrate into the pipe material, causing a series of problems.

[0003] The existing oxygen barrier pipe is shown in the patent with application number CN201821668643.3, which prevents external oxygen from entering the pipe through the oxygen barrier layer, but the water in the ground heat system usually contains a certain amount of minerals, such as calcium carbonate and calcium sulfate, which will cause the heat transfer speed of the ground heat pipe to decrease and the efficiency of the heating system to decrease after the thickness of the scale formed under high temperature and flow conditions. The most direct feeling is poor heating effect and temperature does not rise. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve the existing oxygen barrier pipe inner wall easy to accumulate thick scale, affect the shortcoming of heat transfer efficiency, propose a kind of oxygen barrier pipe, increase inner wall area, slow down scale thickness growth rate, improve heat transfer efficiency.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A ground heat dissipation scale prevention oxygen barrier pipe, comprising a hydrophobic scale prevention layer, a working pipe body, a glue layer and an oxygen barrier layer arranged in order from inside to outside, the cross section of the working pipe body inner wall is in wave ring shape, the hydrophobic scale prevention layer is evenly arranged along the working pipe body inner wall, the material of the hydrophobic scale prevention layer is PTFE after activation treatment, the thickness of the hydrophobic scale prevention layer is 8-10% of the average thickness of the oxygen barrier pipe, the material of the working pipe body is PE-RT, the average thickness of the working pipe body is 82-88% of the average thickness of the oxygen barrier pipe, the material of the oxygen barrier layer is EVOH, and the thickness of the oxygen barrier layer is 2-2.6% of the average thickness of the oxygen barrier pipe.

[0007] Through the above setting, first, the oxygen barrier layer prevents external oxygen from penetrating into the pipe, improving the service life and safety of the ground heat; second, the hydrophobic scale prevention layer with PTFE material has small surface energy, which can reduce the accumulation of scale on the surface of the hydrophobic scale prevention layer; third, the inner side of the hydrophobic scale prevention layer is in wave ring shape, which has larger area than the traditional cylindrical surface, and the thickness of the same amount of scale accumulated on the inner wall of the hydrophobic scale prevention layer is smaller, achieving the effect of slowing down the growth rate of scale thickness and improving the heat transfer efficiency.

[0008] Further, the minimum thickness of the working pipe body is 70-80% of the average thickness of the working pipe body.

[0009] Further, the maximum thickness of the working pipe body is 120-130% of the average thickness of the working pipe body.

[0010] Further, the material of the glue layer is EVA or EAA, and the thickness of the glue layer is 2.8-3.6% of the average thickness of the oxygen barrier pipe.

[0011] Further, the working pipe body is embedded with copper wires in the inner wall convex part.

[0012] Through the above setting, the heat transfer property of the working pipe body is improved.

[0013] Further, the cross section of the copper wire is elliptical, and the long axis of the cross section of the copper wire is perpendicular to the line connecting the center of the copper wire and the center of the oxygen barrier pipe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The schematic view of the oxygen barrier pipe of the embodiment.

[0015] Figure 2 The sectional view of the oxygen barrier pipe of the embodiment.

[0016] Figure 3 The schematic view of the average thickness of the working pipe body of the embodiment.

[0017] Figure 4 The sectional view of the oxygen barrier pipe of another embodiment. DETAILED DESCRIPTION

[0018] The technical scheme of the present application will be further specifically explained below by embodiments and in combination with the drawings.

[0019] As shown in the drawings, Figures 1 to 3 An oxygen barrier pipe for floor heating, water drainage and scale prevention comprises, from inside to outside, a water drainage and scale prevention layer 3, a working pipe body 4, a glue layer 5 and an oxygen barrier layer 6. The cross section of the inner wall of the working pipe body 4 is in a wave ring shape. The water drainage and scale prevention layer 3 is evenly arranged along the inner wall of the working pipe body 4. The material of the water drainage and scale prevention layer 3 is activated PTFE. The thickness of the water drainage and scale prevention layer 3 is 8-10% of the average thickness of the oxygen barrier pipe. The material of the working pipe body 4 is PE-RT. The average thickness of the working pipe body 4 is 82-88% of the average thickness of the oxygen barrier pipe. The material of the oxygen barrier layer 6 is EVOH. The thickness of the oxygen barrier layer 6 is 2-2.6% of the average thickness of the oxygen barrier pipe.

[0020] Through the above settings, firstly, the oxygen barrier layer 6 prevents external oxygen from penetrating into the pipe, thus improving the lifespan and safety of the underfloor heating system; secondly, the PTFE hydrophobic anti-scaling layer 3 has a low surface energy, which reduces the accumulation of scale on its surface; thirdly, the inner side of the hydrophobic anti-scaling layer 3 is wavy and annular, which has a larger surface area than the traditional cylindrical surface, so the same amount of scale will accumulate on the inner wall of the hydrophobic anti-scaling layer 3 with a smaller thickness, thereby slowing down the rate of scale accumulation and improving heat transfer efficiency.

[0021] The oxygen-barrier pipe of this application is used for underfloor heating. It is internally filled with water to transfer heat from the water to the floor. The oxygen-barrier layer 6 effectively blocks external oxygen, preventing it from penetrating into the pipe and reducing oxygen in the water. This protects the metal components in the underfloor heating system from oxidation, improving its lifespan and safety. The oxygen-barrier layer 6 is tightly bonded to the outside of the working pipe body 4 via an adhesive layer 5. The thickness of the oxygen-barrier layer is specifically 9% of the average thickness of the oxygen-barrier pipe. The outer wall of the working pipe body 4 is cylindrical, while the cross-sections of the inner wall of the working pipe body 4 and the hydrophobic anti-scaling layer 3 are both wavy and annular. The inner wall of the hydrophobic anti-scaling layer 3 is smooth and without sharp edges, which helps reduce noise. The material of the hydrophobic anti-scaling layer 3 has low surface energy, making it difficult for scale to adhere, thus reducing scale thickness. The thickness of the hydrophobic anti-scaling layer in this application is specifically 2.5% of the average thickness of the oxygen-barrier pipe. The inner wall cross-section of the working pipe body 4 is wavy and annular, providing a larger inner wall area compared to a uniformly thick circular pipe. Specifically, as shown... Figure 3 As shown, the inner wall of the working pipe 4 is shaped into a cylindrical surface by shaping peaks and filling valleys, forming a circular pipe with a cross-sectional area equal to that of the working pipe 4. The working pipe 4 in this application has a larger inner wall area due to its wavy, annular inner wall. Therefore, when the same amount of scale adheres to the hydrophobic anti-scaling layer 3, the thickness is smaller, resulting in a slower rate of scale buildup and extending the lifespan of the underfloor heating system. Furthermore, the thickness of the aforementioned circular pipe is the average thickness t1 of the working pipe 4. The sum of the average thickness of the working pipe 4, the hydrophobic anti-scaling layer 3, the oxygen barrier layer 6, and the adhesive layer 5 constitutes the average thickness of the oxygen barrier pipe. Specifically, the average thickness of the working pipe in this application is 85.5% of the average thickness of the oxygen barrier pipe.

[0022] As one implementation method, the minimum thickness t2 of the working tube 4 is 70-80% of the average thickness of the working tube 4.

[0023] When the minimum thickness of the working tube 4 in this application is less than 70%, the depth of the concave inner wall of the working tube 4 is too large, which may affect the water flow velocity at the concave area and thus affect heat transfer; while when the minimum thickness of the working tube 4 is greater than 80%, the depth of the concave inner wall of the working tube 4 is too small, and the wave shape is not obvious, that is, the effect of increasing the inner wall area of ​​the working tube 4 is not obvious; the minimum thickness of the working tube in this application is specifically 75% of the average thickness of the working tube.

[0024] As one implementation method, the maximum thickness t3 of the working tube 4 is 120-130% of the average thickness of the working tube 4.

[0025] The maximum thickness of the working tube body 4 is less than 120%, and the inner wall of the working tube body 4 is too small, the wave shape is not obvious, and the effect of increasing the area of the inner wall of the working tube body 4 is not obvious; when the maximum thickness of the working tube body 4 is greater than 130%, the inner wall of the working tube body 4 is too large, which may increase the impact of the water flow on the inner wall, resulting in noise. The maximum thickness of the working tube body of the present application is 125% of the average thickness of the working tube body. The inner wall of the working tube body 4 is provided with 20-25 inner walls.

[0026] As an implementation manner, the material of the adhesive layer 5 is EVA or EAA, and the thickness of the adhesive layer 5 is 2.8-3.6% of the average thickness of the oxygen barrier tube.

[0027] In another embodiment, as shown in Figure 4 The working tube body 4 is embedded with copper wire 7 at the inner wall.

[0028] Through the above setting, the heat transfer property of the working tube body 4 is improved.

[0029] The thickness of the working tube body 4 of the present application may affect heat transfer, so the copper wire 7 is embedded at the thicker part of the working tube body 4. The copper wire 7 has better heat conduction performance than the plastic material, so that the thicker part of the working tube body 4 also has good heat transfer property.

[0030] As an implementation manner, the cross section of the copper wire 7 is elliptical, and the long axis L1 of the cross section of the copper wire 7 is perpendicular to the line L2 connecting the center of the copper wire 7 and the center of the oxygen barrier tube.

[0031] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A floor heating hydrophobic anti-fouling oxygen barrier pipe, characterized in that, The working pipe body is made of PE-RT, and the average thickness of the working pipe body is 82-88% of the average thickness of the oxygen barrier pipe.

2. The drain, scale and oxygen barrier pipe for floor heating according to claim 1, wherein, The minimum thickness of the working pipe body is 70-80% of the average thickness of the working pipe body.

3. The drain, scale and oxygen barrier pipe for floor heating according to claim 1, wherein, The maximum thickness of the working pipe body is 120-130% of the average thickness of the working pipe body.

4. The drain, scale and oxygen barrier pipe for floor heating according to claim 1, wherein, The glue layer is made of EVA or EAA, and the thickness of the glue layer is 2.8-3.6% of the average thickness of the oxygen barrier pipe.

5. The drain, scale and oxygen barrier pipe for floor heating according to claim 1, wherein, The copper wire is embedded in the inner wall of the working pipe body.

6. The drain, scale and oxygen barrier pipe for floor heating according to claim 5, wherein, The cross section of the copper wire is elliptical, and the long axis of the cross section is perpendicular to the line connecting the center of the copper wire and the center of the oxygen barrier pipe.

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