JPH01277180A - Reversible cold heat/hot heat generator - Google Patents

Abstract

PURPOSE:To maintain the initial performance over long time, by welding a metal pipe to be connected with a metal container which receives water through a valve and a metal pipe to which a glass pipe is welded in the upper part to be vacuumed, with a metal container which contains zeolite and hot-sealing the glass pipe section after the completion of vacuum operation. CONSTITUTION:A stainless pipe 5 for a stainless container 3 which contains water 4 and a stainless pipe 7 welded with a Pyrex pipe 7' in the upper part are welded to a stainless container which contains zeolite 2. A vacuum pump is connected to the Pyrex pipe 7'; a valve 6 is opened so as to obtain the degree of vacuum below 10<-1>mmHg, then, the valve 6 is closed; the Pyrex pipe 7' is hot-cut and turned into a reversible cold heat/hot heat generator. When the valve 6 is opened, the water in the stainless container 3 is fervently vaporized by the power of water steam adsorption of zeolite 2 in the stainless container 1. The heat of the water 4 is removed so that the temperature of the water is lowered. The zeolite 2 generates the heat of adsorption and builds up heat. When the adsorption power of zeolite 2 is degraded, the container 1 must be heated so as to separate the adsorbed water steam and returned to the container 3, which makes it possible to maintain the initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a reversible cold/heat generator that does not leak for a long period of time after vacuum adjustment.

Conventional technology Traditionally, for the purpose of heat utilization and waste heat utilization of factories, etc.
A reversible cold/heat heat generating system with a relatively simple configuration in which zeolite and water are sealed in separate containers via knobs that can be opened and closed, creating a vacuum in the system and allowing effective movement of refrigerant liquid vapor. generator is known. These are 3J! with a valve that seals the old vacuum tube to maintain the vacuum after the system is evacuated. Please be sure to do this by cutting, melt-sealing metal pipes, and pressure welding by the Metals Agency.

Problems to be Solved by the Invention In a reversible cold/heat exothermic generator, by maintaining the inside of the system at a degree of vacuum of 1 om HI or less, zeolite easily and efficiently adsorbs water vapor, thereby causing the zeolite to generate heat of adsorption. Therefore, in order to promote the evaporation of water vapor, it takes advantage of the fact that the water temperature decreases due to the removal of heat of evaporation from the water. In this case, it is necessary to first evacuate the system to the degree of vacuum specified in L, and then disconnect the reversible cold/heat generator from the vacuum pump to maintain an unchanged degree of vacuum for a long period of time.
In conventional valve sealing, air gradually enters the system due to deterioration of the sealing material. Furthermore, when melting and sealing gold 4 tubes, the sealing yield was poor because the melting point of the metal was high and the viscosity of the molten metal during melting was extremely low. Relatively soft aluminum and copper alloys are used for pressure welding of gold and 4-silicon metals, but in reversible cold/heat generators, the heat generated by the zeolite can reach up to 200°C, and combined with this, the vacuum is maintained, resulting in deformation. As this occurs, it is necessary to use a highly hard metal such as stainless steel, which poses a problem in welding. Therefore, there has been a strong demand for a seal that is simple to process, does not cause leakage over a long period of time, and has a high yield.

It is an object of the present invention to provide a reversible cold/heat generator that meets such conventional demands.

Means for Solving the Problems In order to solve the above problems, the present invention provides a metal container containing zeolite, a metal tube for connecting to a metal container containing water via pulp, and a metal tube for evacuation. A metal tube with a glass tube fused to it is welded to the upper part, and when the vacuum is finished, the glass tube portion is fused and sealed to maintain the vacuum.

Function The metal tube to which the glass tube is fused is made of a metal that can be welded to the metal container containing the zeolite in advance to ensure no leakage72. After Q K welding, a vacuum pump is connected to the glass tube section to perform evacuation processing, and at the end of the process, the glass section is fused and cut with a gas burner, etc. while continuing vacuuming to ensure a reliable and easy yield. A high degree of sealing is possible.

For this sealing, various types of glass can be selected, such as glass depending on the sealing work temperature. For acetylene flames, quartz glass is used, and for city gas flames or propane flames, Pyrex glass, common soda glass, lead glass, etc. are used. Since glass has a wide range of viscous states from the time it begins to soften when heated to a low viscosity liquid, it can be sealed reliably, and once melt-sealed, it can maintain complete airtightness.

Example An embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a stainless steel container containing zeolite 2, which has a stainless steel pipe 6 for connecting to the stainless steel pipe C of the stainless steel container 3 containing water 4 via pulp 6, and a Pyrex glass tube "bottom" on the top. Before fusion welding and evacuation, the glass tube is welded to the stainless steel conduit 7 which is in an open state.When the evacuation is completed, the glass tube 1 is fused and sealed with city gas flame to maintain the vacuum. There is.

In FIG. 1, the Pyrex glass tube 1 remains open before being vacuumed. Connect this open part to a vacuum pump, open the pulp 6, and increase the vacuum level to 10'mH.
With the pressure below I, the pulp 6 is closed, and the Pyrex glass tube 7' is fused and cut with a gas flame to form a reversible cold/heat generator that maintains the above vacuum degree. When the pulp 6 is opened, the water contained in the stainless steel container #3 is strongly promoted to vaporize due to the water vapor adsorption power of the zeolite 2 contained in the stainless steel container 1, so the heat of the water 4 is taken away and the water temperature decreases. decreases, and the zeolite 2 generates heat of adsorption and generates heat. In this state, the internal pressure is about 1 amHf due to water vapor, but as long as the presence of air molecules is 10'mHy or less, the operation will proceed without any problem. If the adsorption capacity of the zeolite 2 decreases or disappears, heat the stainless steel container 1 from the outside with the pulp 6 open to desorb the adsorbed water vapor, return it to the stainless steel container 3, and then close the pulp 6 while coagulating it. The initial state can be maintained.

It is necessary to repeat the above operation for a long period of time to maintain the initial performance of the cold heat exothermic generator, and by fusion-sealing the glass tube 7' of the present invention, the above operating state can be maintained without abnormality, and the vacuum Changes such as a decrease in temperature will not occur.

Since it is difficult to measure and evaluate this state over a long period of time using a vacuum gauge, the adsorption of water vapor to the zeolite and the deaeration of water vapor from the zeolite described above were repeated and judged based on the reduced performance. The horizontal axis represents the number of repetitions of the above operation, and the vertical axis represents the temperature difference between the lowered water temperatures before and after the water vapor was adsorbed onto the zeolite. The reversible cold/heat generator has no performance deterioration at all. Line (C) shows the performance of pulp using a rubber oor ring as a sealing material, and line (d) shows the performance of a stainless steel tube melt-sealed in the following case. The performance of line (C) is that the rubber sealing material deteriorated due to repeated heating when desorbing water vapor from the zeolite that had adsorbed water vapor, leading to a decrease in performance.
) is when melt-sealing stainless steel tubes while maintaining vacuum.
This shows that it is difficult to perform complete melt sealing on the first try.

In the examples, stainless steel is used as the metal, but the metal is not limited to this, and any metal can be used as long as it does not cause problems in maintaining vacuum, such as nickel metal, alloys thereof, titanium metal, etc. It can be used even if there is. It is not necessary to limit the zeolite to one specific type, and each of the nine naturally synthesized types can be effectively used in the present invention. In addition, the glass tube of the stainless steel conduit 7 with the Pyrex glass tube 7' fused to the upper part shown in Fig. 1 is shown for the case where Pyrex glass is used, but it is sufficient to select a glass suitable for the temperature of the gas flame used. There is no problem in using any material such as quartz, general soda glass, or lead glass.

Effects of the Invention As is clear from the embodiments, the reversible cold/heat generator according to the present invention is a method of permanently sealing vacuum-pulled barley by placing an open glass tube in contact with the upper part of a metal tube of the same quality as the container. By evacuating from this part, and fusing and sealing the glass tube part while continuing to vacuum at the end of the X emptying,
The initial performance when forming a reversible cold and heat generation word can be maintained without any change for a long period of time,
This greatly contributes to ensuring the authenticity of the product.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the present invention in which reversible cold heat generation dH
FIG. 2 is a sectional view showing the overall configuration of the present invention, and shows the progress of performance over a long period of operation of the present invention. 1.3... Stainless steel capacity gL2 River... Zeolite, 4... Water, 6... Valve, 7...
...Stainless steel pipe.

Claims (1)

[Claims] A metal tube that is connected to a metal container that contains water via an on-off valve and a glass tube are welded to the metal container containing the zeolite, and the glass tube portion is fused and vacuumed. A reversible cold/heat generator.