JPS5895189A - Bubble type heat exchanger - Google Patents

Abstract

PURPOSE:To obtain an effective heat exchange by a method wherein a gas heated by a heat absorbing device is sent into a bubble generating device which is located in a liquid containing a heat accumulating tank so that a number of bubbles are jetted out into the liquid, thereby bringing the liquid into a direct contact with the bubbles. CONSTITUTION:An appropriate amount of liquid such as water is poured into the heat accumulating tank 1, and the air passing through the heat absorbing device 3 is sent by a circulation pump 4 into the bubble generating device which is located on the bottom of the tank 1, so that a number of bubbles 5 are generated in the liquid in the tank 1. The bubbles, while ascending from the bottom to the water surface, contact directly the water 6 in the tank 1 to exchange heat therebetween. The air rising onto the water surface is sent through a circulation pipe 7 to the device 3, thus circulating between the tank 1 and device 3. According to the present invention, as a circulating heat medium is gaseous, there is no possibility of occurrence of breakdown of the device and liquid leakage due to the freezing of the liquid. Further, as the device 3 permitting the gas to flow only is very light in weight, such a large scale of device 3 as covers the entire house building can be mounted on the building without giving an excessive load on the roof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a heat absorption device (3
) in order to transfer energy such as solar heat absorbed by the heat storage tank (1) to the liquid in the heat storage tank (1), or to extract heat from the heat storage tank (1), it relates to a heat exchange method when using a gas as a heat medium.

With the conventional method of using liquid as a heat transfer medium, there is a risk that heat absorption equipment and circulation pipes placed outdoors at night will be damaged due to freezing of the liquid, and there are other drawbacks such as liquid leakage and water stains. , if the heat absorbing device becomes very heavy due to the liquid inside it, and if the heat absorbing device is installed on the roof of a building, unnecessary weight will be applied to the roof, and the size of the heat absorbing device will become If
(Also, even in systems that use gas as the heat medium and liquid as the heat storage medium, those that use a metal exchanger for heat exchange have a high heat exchange efficiency because the gas and liquid do not come into direct contact. This poor heat exchange efficiency was also the same when extracting heat from the heat storage tank.

The present invention aims to eliminate these drawbacks.

In the present invention, since the circulating heat medium is a gas, there is no need to worry about equipment damage or liquid leakage due to freezing of the liquid, and the liquid that makes the heat absorption device (3) very heavy does not enter the heat absorption device (3). This makes it lightweight and does not put unnecessary burden on the roof of the building.
It is possible to make the heat absorption device (3) large enough to cover the entire room. In addition, by increasing the number of surface species, sufficient energy can be obtained without expensive painting or polishing.
It can also be made cheaply. In the present invention, air is generally used as the heat medium gas and water is used as the heat storage liquid in the heat storage tank (3), so this will be described hereinafter. When the air bubbles (5) pass through the heat storage tank (1) and exchange heat, they come into contact with the water (6) and become highly humid air, so the specific heat is higher than dry air and the circulating heat efficiency is high. Become. In addition, when heat is extracted from a heat storage tank for heating, etc., conventionally, hot water in the heat storage tank is used to radiate indoors.
The heat exchanger heats the indoor air through a metal heat exchanger, but if the present invention is used, the heat storage tank (1)
Heat exchange by direct contact with hot water within 1. Since the filtered air is sent into the room, there is little loss, and the level of water exposure can be relatively low. If you install an auxiliary heater, you can provide sufficient heating even on days when the sunlight is not sufficient. Also, in the dry winter season, it is healthy because it provides moisture indoors.

To explain these with reference to the drawings, FIG. 1 is a partially sectional operational view of the first embodiment of the present invention. Heat storage! (1) Fill the tank with an appropriate amount of water, and use a circulation pump (4) to send the air that has passed through the heat absorption device (3) to the bubble generator (2) installed at the bottom of the heat storage tank (1). Generate bubbles (5). While the bubbles (5) rise from the bottom to the water surface, they pass through the heat storage tank (
Heat exchange is performed by direct contact with the water (6) in 1).

The air released above the water surface is sent to the heat absorption device (3) through the circulation pipe (7), and circulates between the heat storage tank (1) and the heat absorption device (3).

FIG. 2 is a partial cross-sectional view of the second embodiment of the present invention in which heat is extracted from the heat storage tank (1). Air pump (8)
The air sent to the bubble generator (2) becomes like the bubble (5) in Figure 1, exchanges heat while rising to the water surface, exits from the outlet (9), and reaches the emitter 00). Released indoors, etc. It is also possible to combine the first embodiment and the second embodiment.

Note that the arrows in the figure indicate the flow of air.

FIG. 3 is a perspective view of an example of the bubble generator (2).

The structure of the bubble generator (2) is that it is hollow and has a large number of small holes (11) that pass through the inside and outside of the hollow.
The air that has passed through the circulation pipe (7) passes into the hollow interior and can be connected to the circulation pipe (7) in eight ways.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view of a first embodiment of the present invention. FIG. 2 is a partial cross-sectional view of a second embodiment of the present invention. FIG. 3 is a perspective view of an example of a bubble generator. 2 is a bubble generator 6 is a heat absorption device 4 is a circulation pump 5 is a bubble 6 is a liquid (generally water) 7 is a circulation pipe 8 is an air supply pump 9 is an outlet 10 is a discharger 11 is a small hole patent applicant Haruhiko Koike

Claims (1)

[Claims] Bubble generator installed in the heat storage tank (1) containing liquid G @
(A bubble type method in which a gas having a temperature different from that of the liquid in the heat storage tank (1) is sent into the heat storage tank (1), a large number of bubbles (5) are ejected into the liquid, and heat exchange is performed by direct contact between the bubbles and the liquid. Heat exchange method.