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Heat exchanger with antifouling coating

A heat exchanger and covering film technology, which is applied in heat exchange equipment, heat transfer modification, lighting and heating equipment, etc., can solve the problems of heat exchanger performance degradation, sanitation problems, etc., and achieve the effect of preventing adhesion

Active Publication Date: 2021-02-26
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such dirt adheres to the heat exchanger, not only the performance of the heat exchanger will be reduced, but also there may be a hygienic problem due to the growth of microorganisms such as mold and bacteria.

Method used

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  • Heat exchanger with antifouling coating
  • Heat exchanger with antifouling coating
  • Heat exchanger with antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] An aluminum metal plate is prepared as a part of the heat exchanger as a fragmented part. Prepare a coating solution obtained by sufficiently dispersing silica particles with an average particle diameter of 20 nm in ethanol as a dispersant by adjusting pH by a known method, apply the coating solution on about half of the surface of an aluminum metal plate, and By drying, the sample for evaluation in which the antifouling film of Example 1 was formed was produced. In this sample for evaluation, an antifouling film was formed on half of the surface, and an antifouling film was not formed on the remaining half. In this sample for evaluation, the surface of the formed antifouling film had irregularities with an arithmetic mean roughness Ra of 10 nm. In addition, the dust adhesion rate of the sample for evaluation was "⊚".

Embodiment 2

[0085] As the silica particles, particles having an average particle diameter of 100 nm were used, and in the same manner as in Example 1, an evaluation sample in which an antifouling coating film was formed in Example 2 was produced. In this sample for evaluation, the surface of the formed antifouling film had irregularities with an arithmetic mean roughness Ra of 40 nm. In addition, the dust adhesion rate of the sample for evaluation was "◯".

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Abstract

In the heat exchanger of the present invention, an antifouling coating is formed on the surface of the antifouling object, the antifouling coating is at least composed of nanoparticles, and the surface of the antifouling coating has an arithmetic average roughness Ra in the range of 2.5 to 100 nm. bumps inside. Accordingly, it is possible to provide a heat exchanger capable of effectively suppressing or preventing at least the adhesion of dry fouling.

Description

technical field [0001] The present invention relates to a heat exchanger formed with an antifouling coating. In particular, it relates to a heat exchanger capable of effectively suppressing or preventing adhesion of dry fouling. Background technique [0002] The refrigerating cycle is widely used in the field of various refrigerating machines such as air-conditioning devices (air conditioners), refrigerators, refrigerated display cases, and vending machines. The refrigeration cycle has a heat exchanger for absorbing heat from a low-temperature heat source to releasing heat from a high-temperature heat source. Various substances tend to adhere to the heat exchanger as "fouling". [0003] For example, in order to exchange heat with sucked air by a heat exchanger in an air conditioner, various substances contained in the air tend to adhere to the heat exchanger as "fouling". If such dirt adheres to the heat exchanger, not only the performance of the heat exchanger will be lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F13/18F28F19/02F28F19/04F28F19/06
CPCB82Y30/00B82Y40/00F28F13/18F28F19/02F28F19/04F28F19/06
Inventor 小中洋辅久保次雄
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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