Electric hot-water bag utilizing phase change latent heat and manufacturing method thereof

An electric hot water bag, phase change latent heat technology, applied in heat exchange materials, chemical instruments and methods, heating appliances for treatment, etc., can solve the problem of no electric hot water bag, achieve long-lasting heating effect, prevent burns, and The effect of heating time

Inactive Publication Date: 2013-10-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, looking at the existing products currently on the market, there is no electric hot water bag dedicated to these two groups.

Method used

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  • Electric hot-water bag utilizing phase change latent heat and manufacturing method thereof
  • Electric hot-water bag utilizing phase change latent heat and manufacturing method thereof
  • Electric hot-water bag utilizing phase change latent heat and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this example, see Figure 1 ~ Figure 3, an electric hot water bag using phase change latent heat, which is composed of an outer layer 5 of the electric hot water bag, a heating element 7, an insulating material and a heat storage liquid 3 filled, the outer layer 5 of the electric hot water bag is sealed to form a sealed cavity, and the filled heat storage is injected into the sealed cavity The liquid 3 and the heating element 7 are arranged in the sealed cavity. The heat output part of the heating element 7 outputs heat to the heat storage liquid 3. One end of the heating element 7 forms the positive and negative electrodes 2, and the outer surface of the positive and negative electrodes 2 is covered with an insulating material. Insulation, the positive and negative electrodes 2 are connected to the power plug 1 outside the outer layer 5 of the electric hot water bag through wires, and an energy storage material layer 4 is provided inside the heat storage liquid 3, an...

Embodiment 2

[0036] This embodiment is basically the same as Embodiment 1, especially in that:

[0037] In this embodiment, it is taken as an example that the volume of the electric hot water bag utilizing phase change latent heat in this embodiment is 1000ml. In order to make the hot water bag store a large amount of heat energy while distributing the heat evenly, according to the theoretical calculation and experimental results, it is concluded that the volume occupied by filling the heat storage liquid 3 is 570ml, and that of the energy storage material is 430ml. The mass percentages of the components in the energy storage material are: 88% sodium acetate trihydrate, 10% sodium sulfate and 2% carboxymethyl cellulose.

[0038] In this embodiment, the method for making an electric hot water bag utilizing latent heat of phase change comprises the following steps:

[0039] a. Preparation of energy storage material layer composition system: using sodium acetate trihydrate as phase change ma...

Embodiment 3

[0054] This embodiment is basically the same as the previous embodiment, and the special features are:

[0055] In this example, see Figure 4 , in the same layer of energy storage material layer 4 structural layer, the single-layer structural layer of energy storage material layer 4 is separated into different blocks by using low thermal conductivity material interlayer 6, so that the low thermal conductivity material of energy storage material layer 4 The interlayer 6 is connected to form an integral space partition frame, which separates different blocks of the energy storage material layer 4, so that the energy storage material layer 4 forms a layered array composite material structure. Through the coating method, the mixed solution of the energy storage material layer 4 is orderly dispersed in the form of an array between the two layers of butyl rubber material, forming a phase-change material block distributed in the form of an array. The gaps between the variable mater...

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Abstract

The invention discloses an electric hot-water bag utilizing phase change latent heat. An energy storage material layer is arranged inside the electric hot-water bag filled with heat storage liquid, the heat output portion of a heating element is arranged inside the energy storage material layer, the energy storage material layer forms a stable phase composition body system by blending phase change materials and auxiliaries, the composition body system of the energy storage material layer is made to be kept in an even and stable suspended state or an opacifying state or to form a gel state, a heat energy exchange buffering release functional layer is formed, and heat which is output by the heating element and absorbed by the energy storage material layer is slowly and smoothly transferred to the filled heat storage liquid. The invention further provides a manufacturing method of the electric hot-water bag. The method comprises the steps of manufacturing the composition body system of the energy storage material layer, preparing an energy storage material layer unit, manufacturing an energy storage material layer system and forming and manufacturing the electric hot-water bag. The electric hot-water bag utilizing the phase change latent heat can effectively prevent scald, and has the advantages of being longer in warming time, reasonable in structure, environmentally friendly, and good in market prospect.

Description

technical field [0001] The invention relates to a heating hot water bag and a manufacturing method thereof, in particular to an electric hot water bag and a manufacturing method thereof. Background technique [0002] As the temperature continues to drop, electric hot water bags are being used more and more by people. Its working principle is to heat the internal solution through an electric heating device, which has the advantages of recyclable use and convenient heating. [0003] Yet there are still some deficiencies in current electric hot water bag. First of all, after charging, the water temperature is as high as 90°C. Although the outer layer of the electric hot water bag is covered with a cloth cover, the temperature of the internal hot water is still as high as 75°C after heat transfer to the surface of the human body. Even for adults, this temperature is slightly biased. High, the heating temperature for adults is generally 60-70°C. For infants and the elderly, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F7/08C09K5/06
Inventor 奚馨陈捷吴松柏
Owner SHANGHAI UNIV
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