JP3122621U - High-vacuum heat pipe with electric heating inside working fluid - Google Patents

Abstract

An inexpensive and effective heat pipe is provided, and a floor heating device and the like that are easy to manufacture and maintain and that have good thermal efficiency are provided.
A heat pipe partially encloses a special working liquid prepared from a normal working liquid base material and other harmless liquid having appropriate physical characteristics in a cylinder having good thermal conductivity, An insulated heating wire is immersed in the liquid through the sealed lid of the cylindrical body, and a power connector is connected to the terminal of the heating wire, and the inside of the tube is made highly vacuum and energized. . According to such a configuration, the entire liquid is quickly heated in accordance with the physical characteristics of the working liquid by simply heating the heating wire immersed in a part of the lid-side working liquid. The working liquid evaporates and rises from the surface, is cooled by contacting the low-temperature cylindrical wall, is liquefied, is dropped and refluxed into the working liquid stock solution, is heated again, and repeats the same cycle.
[Selection] Figure 3

Description

        The present invention relates to a high vacuum heat pipe in which a heat source, particularly a heating wire, is installed in one end of the pipe in a high vacuum pipe partially enclosing a desired working liquid.

        The heat pipes shown in FIGS. 1 and 2 are generally used as conventional heat pipes, and this means is composed of an inner pipe (2) and an outer pipe (3) having good heat conductivity such as aluminum. These two units are sealed and evacuated, and at the same time, water, liquid ammonia, methanol, full-tech PP3 and PP4 (trade names), thermalx, which are harmless to the human body and easily vaporized. A liquid such as (trade name) is partially enclosed, and a heating fluid such as water or water vapor that activates the working liquid is circulated in the inner tube (2).

In such a configuration, when hot water or the like is introduced into the inner pipe (2), the working liquid (4) evaporates in the direction of the arrow (f) at the vaporization temperature and is rapidly conducted in the low temperature direction. The outer liquid (3) condenses and heats the object outside through the pipe wall (3) by the heat (F) released at that time, and at the same time, the condensed working liquid is shown by the arrow (f). As long as the hot water in the inner tube continues to be heated, the vaporization-condensation-liquefaction-refluxing cycle is repeated until the temperature of the outside tube reaches a constant temperature. Continue to heat up.
Therefore, such a heating means is advantageously used as a heating device for floors, baths, hot water storage tanks, fish tanks, and the like.

Furthermore, one end or a part of the heat pipe is heated or heated by a special heat source such as an electric heat source to activate the working liquid in the vacuum heat pipe of a specific size, and the liquid-gas-liquid phase is activated. An apparatus for heating or keeping a target object by heat generated during conversion, such as a vacuum thermos, has also been proposed.
Shoko 57-55784

        However, one means of activating the conventional circulating heat pipe working liquid shown in FIGS. 1 and 2 is to distribute hot water or steam warmed by a boiler or the like into the inner pipe (2). The whole working liquid (4) is circulated, heated, vaporized, and condensed to change the phase, and the object is heated by the heat released at this time. Therefore, the heated liquid or vapor must be continuously circulated until the target object reaches a predetermined temperature, and there is still room for improvement in terms of the structure of the apparatus and the thermal energy.

        Therefore, this type of heat pipe has been used in recent years, and various kinds of working liquids having different boiling points that can be used as described above are selected according to the purpose. The temperature, boiling point, etc. are changed as appropriate, and only a part of the working liquid is heated to quickly conduct the heat to heat the whole, evaporate from the entire liquid level, cool on the pipe wall surface, and condense and liquefy. The entire pipe is heated by the heat dissipation action at the time of the phase change to change to a single heating element, the adjacent target object is heated, and the condensate condensed and dripped at the same time is refluxed into the original working liquid, and again It has been improved to repeat this operation.

Such a heat pipe heating cycle technique is used for an electric thermos disclosed in Patent Document 1, for example. That is:
This thermos is provided with an opening at the bottom of the vacuum double container, a heat pipe is inserted and fixed in this opening, and an electric heating element is provided at one end of the pipe protruding to the outside, thereby operating the heat pipe. A part of the liquid is heated and changed into a single heating body as described above to efficiently heat and keep the target contents.

        However, in the heat pipe heating means of this technology, an electric heating element such as a thermistor heater must be mounted on the outside of the bottom of the heat pipe. There are disadvantages that must be complicated.

Means to solve the problem

        Therefore, the heat pipe of the present invention does not use only one kind of working liquid first, but uses a readily available working liquid substance as a base material to realize desired heating characteristics. A safe heating liquid is mixed and denatured into an optimal working liquid, and at the same time, an insulated heating wire is directly attached to one end of this partially liquid-sealed working liquid for efficient use. It is characterized in that it is configured to heat or change to a single heated body and to heat or keep a desired target close by the heat.

Effect of device

Thus, the heat pipe of the present invention is:
(1) The physical properties of the working fluid of the heat pipe are modified by mixing a plurality of harmless liquids with various working liquids as the base material, and the most suitable special mixed liquid is used according to the purpose. Therefore, the heating and heating effect of the object is quick and large.
(2) Since the insulated heating wire is directly enclosed in the vacuum pipe, it is easy and safe to manufacture.
(3) The connection connector with the power source is simple and inexpensive.
(4) It is easy to attach to, remove from, and electrically connect to an object to be heated, such as a floor heating device, and the entire pipe can be heated with a heat exchange rate close to 0% in energy loss.

Best mode for carrying out the invention

In consideration of such operations and effects, the best embodiment of the present invention basically adjusts the working liquid as described above, which can effectively heat the object, and the adjusted special liquid. Are encapsulated partially in a high thermal conductivity pipe of a specific size, and at the same time, an insulated heating wire is immersed in the working liquid at one end thereof and encapsulated, and the terminal is placed outside the enclosing lid. It is attached and evacuated and vacuumed, and a suitable connecting connector is connected to the terminal to form one heat pipe. The heat pipe formed in this way is used for a floor or wall of a predetermined size. After being inserted or attached to a desired location in the body to be heated from a desired direction, the respective connectors are connected to each other and connected to a power source to be used as floor or wall heating.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

      The high vacuum-electric heat inner heating type heat pipe (5) of the present invention is made of a material having a good thermal conductivity, such as aluminum, and the inside thereof is basically harmless to the human body and easily vaporized. Part of the liquid (7) modified by adding a safe and desired physical property liquid such as ammonia, methanol, ethanol, water, etc. to the working liquid, such as its boiling point, thermal conductivity, etc. After being sealed, the heating wire (6) having an appropriate heat generation amount is covered with an insulating material (11) or immersed without sealing, sealed with a cap (12) and sufficiently evacuated. The heating wire terminals (8) and (8) on the cap are connected to the plug (9).

      Such a heat pipe (5) energizes the heating wire (6) in the modified working liquid (7) by connecting the plug (9) to a power source and heats it, as described above. The working liquid (7) is vaporized in the upward arrow direction, and after contacting the pipe wall, the heat is taken away, cooled and liquefied, dropped in the downward arrow direction and recirculated into the original working liquid (7), again. When heated, the vaporization-liquefaction phase change is repeated, and the object to be heated (10), for example, the floor surface, wall surface, etc. is continuously heated through the pipe wall to achieve the heating effect by heat exchange.

      Thus, the high heat vacuum pipe inside the working liquid is heated at the one end of the pipe. Since it is performed easily and quickly, heating and heating of the object such as the floor (10) is performed quickly. Also, if the shape of the pipe is formed as a plug-in type, as shown in FIG. 3, if a suitable number of pipes are inserted into the object in the appropriate direction and connected to each other, surface heating can be easily performed. An economical floor heating system can be provided.

  It is a cut front view of a conventional heat pipe in which the working liquid heating means uses water or steam.   FIG. 2 is a cut side view of the heat pipe of FIG. 1.   FIG. 3 is a partially cut perspective view of the working liquid inner electrothermal heating type high vacuum heat pipe of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conventional type heat pipe 2 Inner pipe 3 Outer pipe 4 Working liquid 5 Working liquid inside electric heating type high vacuum heat pipe of this invention 6 Heating wire 7 Metamorphic working liquid 10 Floor 12 Cap

Claims (2)

        A portion of the high thermal conductivity single pipe is sealed with a predetermined amount of the working liquid that vaporizes and condenses at an appropriate temperature, and at the same time, an insulated heating wire is attached inside one end of the pipe to provide a working fluid. The operation is characterized by the fact that the terminal is projected out of the pipe lid, heated at the same time as partly heated, connected to the power connector and energized, and the internal space is made highly vacuum. Liquid inside electrothermal heating type high vacuum heat pipe.         2. A surface heating device comprising: a working liquid inner electrothermal heating type high vacuum heat pipe according to claim 1 inserted into a body to be heated from a desired direction and connected to each other to be heated.

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