TW202020381A - Heat storage device of phase change material comprising a container, a phase change unit and a heat conduction unit, and capable of achieving an improved heat conduction capacity and an excellent heat absorption rate - Google Patents

Abstract

A heat storage device of a phase change material comprises: a container with an accommodating chamber; a phase change unit, which is a phase change material disposed in the accommodating chamber of the container; and a heat conduction unit disposed in the accommodating chamber of the container and in contact with the phase change unit, wherein a heat absorption efficiency of the heat conduction unit is superior to a heat absorption efficiency of the phase change unit, so as to achieve an improved heat conduction capacity and an excellent heat absorption rate. In addition, the container has an accommodating body, and the accommodating chamber is defined in the accommodating body from top to bottom.

Description

Phase change material heat storage device

The invention relates to the use of phase change materials, in particular to a phase change material heat storage device.

According to this, phase change materials (such as paraffin) can be used to melt heat from a solid phase to a liquid phase in a specific temperature range to complete thermal energy storage, or solidify from a liquid phase to a solid phase to complete thermal energy release, so it is very suitable for making latent heat storage devices And, because of the low cost of phase change materials and moderate phase change temperature, it is suitable as a solar heat storage device.

However, due to the low thermal conductivity of the phase change material, the heat absorption rate of the heat storage device will be slow, and even the heat of the heat source cannot be effectively transferred to the remote phase change material.

Therefore, how to make the heat storage device containing the phase change material improve the heat conduction ability to assist the phase change material to effectively absorb the heat from the heat source is a problem that the related industries urgently need to solve.

The present invention is to improve the conventional heat storage devices containing phase change materials, such as poor thermal conductivity and slow rate of heat absorption. Therefore, the present invention provides a phase change material heat storage device, which mainly includes: a container with A volume chamber; a phase change unit, which is a phase change material, placed in the volume chamber of the container; a heat conduction unit, placed in the volume chamber of the container and in contact with the phase change unit, the heat absorption efficiency of the heat transfer unit is excellent The heat absorption efficiency of the phase change unit; in order to achieve the effect of improving heat conduction capacity and absorbing heat rate better.

Please refer to the first and second figures, which is a phase change material heat storage device provided by the first preferred embodiment of the present invention, which mainly includes a container 10, a phase change unit 20 and a heat conduction unit 30, wherein;

Please refer to the first to second figures. The container 10 has a containing body 11 made of a metal material. The containing body 11 has a containing chamber recessed from top to bottom 119.

Please refer to the first to second figures. The phase change unit 20 is a phase change material, such as paraffin. The phase change unit 20 is placed in the chamber 119 of the container 10.

Please refer to the first to second figures. The heat conduction unit 30 has a plurality of metal pillars 31. In this embodiment, the metal pillars 31 are aluminum alloy thermal conductive pillars, the total number of which is nine, and a 3x3 matrix The patterns are arranged upright in the chamber 119 of the container 10, and are surrounded and contacted by the phase change unit 20.

Therefore, the above are the various components of a phase change material heat storage device and their assembling methods provided by the first preferred embodiment of the present invention, and then the use characteristics of the present invention are described as follows:

First, the present invention can be exposed to sunlight for a period of time before use to allow the phase change unit 20 and the heat conduction unit 30 to absorb heat. Although the endothermic rate of the phase change unit 20 is slower, the heat absorption efficiency is better than the phase The heat conduction unit 30 of the change unit 20 absorbs heat and conducts it to the surrounding phase change unit 20, and can increase the temperature of the phase change unit 20 at a faster speed (ie, reduce the required time) to achieve the phase change unit 20 The effect of heat storage is faster.

In this way, the items that need to be kept warm or the pots P that contain foods that need to be kept warm can be placed on the present invention (as shown in the third figure) for the purpose of keeping warm. Therefore, the scope of application of the present invention is quite wide, and can be used as picnic utensils, daily necessities or in the green energy industry.

In addition, it has been found through experiments that the heat absorption time of the metal cylinder as the heat conduction unit plus the phase change unit in this embodiment will save 31.4% of the time compared with the pure phase change unit, so as to improve the heat absorption efficiency, Improve the convenience of use.

Secondly, as shown in the fourth figure, in the above embodiment, the accommodating body 11 may further have a bottom plate 111 and a plurality of side plates 112 connected to the top surface of the bottom plate 111, so that the bottom plate 111 and the side plates 112 The chamber 119 is surrounded together.

Furthermore, as shown in the fifth figure, in the above embodiment, in addition to the accommodating body 11, the container 10 may further have a cover body 12 to cover the accommodating body 11 with the cover body 12, To close the chamber 119.

As shown in the sixth figure, in the above embodiment, in addition to the containing body 11, the container 10 may further include a heat-insulating material covering body 13. The heat-insulating material covering body 13 is wrapped around the containing body 11 In addition, it is used to slow down the heat loss rate of the phase change unit 20 and the heat conduction unit 30 in the chamber 119.

Please refer to the seventh to eighth figures, which is a phase change material heat storage device provided by the second preferred embodiment of the present invention. This embodiment is the same as the first embodiment and includes a container 40, a phase change unit 50 and A thermal conduction unit 60, but the main differences between this embodiment and the first embodiment are:

In this embodiment, the heat conduction unit 60 is a foam metal 61. The foam metal 61 is placed in the chamber 419 of the container 40 and is in contact with the phase change unit 50 to improve the efficiency of heat absorption.

It has been found through experiments that the heat absorption time of the foamed metal as the heat conduction unit plus the phase change unit in this embodiment is 43.2% less time than that of the pure phase change unit, thereby improving the heat absorption efficiency.

Please refer to the ninth to tenth figures, which is a phase change material heat storage device provided by the third preferred embodiment of the present invention. This embodiment is the same as the first embodiment and includes a container 70, a phase change unit 80 and A thermal conduction unit 90, but the main differences between this embodiment and the first embodiment are:

In this embodiment, the heat conduction unit 90 is a plurality of metal pillars 91 and foam metal 92. The metal pillars 91 are arranged in a matrix in the chamber 719 of the container 70, and the foam metal 92 is also placed in the chamber 719, so that both the metal pillar 91 and the foam metal 92 are in contact with the phase The change unit 80 contacts, and the heat absorption efficiency can be more greatly improved.

It has been found through experiments that this embodiment uses the metal cylinder and the foam metal as the heat conduction unit plus the heat absorption time of the phase change unit, which will save 36.4% of the time than the pure phase change unit for heat absorption time, thereby improving heat absorption effectiveness.

The above disclosures are only the preferred embodiments provided by the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes by those skilled in the art according to the present invention should belong to the present invention. Coverage.

First embodiment 10: Container 11: container 111: bottom plate 112: side board 119: Room 12: Cover 13: Thermal insulation coating 20: Phase change unit 30: heat conduction unit 31: Metal cylinder P: Cookware Second embodiment 40: container 419: Room 50: phase change unit 60: heat conduction unit 61: foam metal Third embodiment 70: container 719: room 80: phase change unit 90: heat conduction unit 91: Metal cylinder 92: foam metal

The first picture is a three-dimensional assembly diagram of the first preferred embodiment of the present invention. The second picture is a schematic cross-sectional view of the embodiment shown in the first picture. The third picture is a schematic view of the use state of the embodiment shown in the first picture. The fourth picture is The exploded view of the partial components presented in different types in the embodiment shown in the first figure. The fifth figure is a schematic cross-sectional view presented in different forms in the embodiment shown in the first figure. The sixth figure is the embodiment shown in the first figure. The cross-sectional schematic diagrams presented in different types in FIG. 7 are the three-dimensional combination diagrams of the second preferred embodiment of the present invention. The eighth pictorial diagram is the cross-sectional schematic diagram of the embodiment shown in the seventh pictorial diagram. The ninth pictorial diagram is the third comparison of the present invention. The three-dimensional combination drawing of the preferred embodiment The tenth drawing is a schematic sectional view of the embodiment shown in the ninth drawing

10: Container

11: container

119: Room

20: Phase change unit

30: heat conduction unit

31: Metal cylinder

Claims (10)

A phase change material heat storage device mainly includes: a container with a chamber; a phase change unit, which is a phase change material, placed in the chamber of the container; and a heat conduction unit, placed in the container Indoors and in contact with the phase change unit, the heat absorption efficiency of the heat conduction unit is better than that of the phase change unit. The phase change material heat storage device as described in item 1 of the patent application scope, wherein the container has a containing body, and the containing chamber is recessed from the containing body from top to bottom. The phase change material heat storage device as described in item 2 of the patent application scope, wherein the accommodating body has a bottom plate and a plurality of side plates connected to the top surface of the bottom plate, so that the bottom plate and the side plates are surrounded together The room. The phase change material heat storage device as described in Item 2 of the patent application scope, wherein the container further has a cover body, and the cover system cover is provided on the accommodating body to close the accommodating chamber. The phase change material heat storage device as described in item 2 of the scope of the patent application, wherein the container further has a heat-insulating material covering body, and the heat-insulating material covering system is coated outside the containing body. The phase change material heat storage device as described in item 1 of the patent application scope, wherein the phase change unit is paraffin. The phase change material heat storage device as described in item 1 of the patent application range, wherein the heat conduction unit has a plurality of metal cylinders. The phase change material heat storage device as described in item 7 of the patent application scope, wherein the metal column systems are arranged upright in a matrix form in the container chamber of the container. The phase change material heat storage device as described in item 1 of the patent application range, wherein the heat conduction unit is foam metal. The phase change material heat storage device as described in item 1 of the patent application scope, wherein the heat conduction unit has a plurality of metal pillars and foamed metal, and the metal pillar systems are arranged in a matrix in the container chamber of the container. The foam metal is located in the chamber, so that both the metal cylinder and the foam metal are in contact with the phase change unit.

Images