JP2008261589A - Heat pipe type heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiation heat pipe type heating device capable of obtaining an upward efficient heating effect by natural convection without providing a fan. <P>SOLUTION: The radiation heat pipe type heating device has a double pipe consisting of an inner pipe and an outer pipe, wherein a heat medium flows through the inner pipe, and an operating fluid is filled in a clearance between the inner pipe and the outer pipe to constitute an evaporating part of a heat pipe for evaporating the operating fluid by the heat medium. The device also has a plurality of pipes projecting almost perpendicularly to the double pipe and almost parallel with one another to constitute a condensing part of the heat pipe for condensing the evaporated operating fluid in the pipes. Inclined fins are mounted to the plurality of pipes, and a casing is disposed to surround the inclined fins. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat pipe type heating device, and more particularly to a radiation type heat pipe type heating device.

  Conventionally, there are known three types of heating devices for heating a room or the like: a warm air type, a convection type, and a radiation type. The hot air type uses a blower to discharge the combustion exhaust gas from the burner as hot air into the room from the hot air outlet, and the convection type, for example, dissipates heat from the heat dissipating fins provided in the condensation section of the heat pipe. In order to promote, forced convection is caused by using a blower to heat the room or the like, and the radiation type is provided with a radiation plate in a condensing part of a heat pipe, for example, indoors by natural heat radiation from the radiation plate. Heating.

  Among these heating devices, the radiation type heating device has the feature that it is easy to control the temperature. Originally, the mainstream was to circulate hot water, but heat pipes were used to improve performance and reduce size and weight. Various types of heating devices using the hood have been proposed (see, for example, Patent Document 1 and Patent Document 2).

The radiation type heating device can provide a comfortable heating effect to the front side of the radiation surface, but there is a problem that the strong heating effect such as heating the whole room is insufficient, and this problem has been proposed so far. Even in the heat pipe type heating device, it is not always solved sufficiently. Although it is possible to forcibly send wind by installing a fan, it is not preferable because it uses extra energy, and it is not preferable because it is as simple as possible, and it is comfortable to the front side of the radiation surface, which is a radiation type feature There has been a demand for a heating apparatus that can obtain an efficient heating effect upward due to natural convection in addition to a good heating effect.
JP 61-246528 A JP-A-62-131121

  The present invention has been made in order to solve the above-described conventional problems, and its object is to provide a radiation that enables an efficient heating effect upward by natural convection without providing a fan. An object of the present invention is to provide a heat pipe type heating device.

  In order to achieve the above object, a heat pipe type heating apparatus according to claim 1 has a double pipe comprising an inner pipe and an outer pipe, a heat medium flows through the inner pipe, and a gap between the inner pipe and the outer pipe. Constitutes an evaporating part of the heat pipe in which the working liquid is enclosed and the working liquid evaporates by the heat medium, communicates with the gap between the inner pipe and the outer pipe of the double pipe, and is substantially perpendicular to the double pipe and A plurality of pipes projecting substantially in parallel to each other are provided to form a heat pipe condensing part in which the working fluid evaporated in the pipe condenses. The plurality of pipes are provided with inclined fins so as to surround the inclined fins. A casing is provided.

  According to a second aspect of the present invention, there is provided a heat pipe type heating apparatus according to the first aspect, wherein a plurality of supporting members are erected adjacent to the plurality of pipes and substantially parallel to the plurality of pipes, and inclined fins are attached to the pipes and the supporting member. It is characterized by being.

  The heat pipe type heating device according to claim 3 is the heat pipe type heating device according to claim 1, wherein the heat pipes composed of the double pipe and the plurality of pipes are arranged adjacent to each other, and the inclined fins attached to one of the plurality of pipes; The inclined fins attached to the other plurality of adjacent pipes are attached so as to be inclined downward from the opposite side toward the outside.

  The heat pipe type heating device according to claim 4 is the heat pipe type heating device according to claim 1, wherein the heat pipe composed of the double pipe and the plurality of pipes is arranged adjacent to each other, and the inclined fins attached to one of the plurality of pipes; Inclined fins attached to the other plurality of adjacent pipes are attached so that these inclined fins are inclined upward from the opposite side to the outside.

  The heat pipe type heating apparatus according to claim 5 is the heat pipe type heating device according to claim 1, wherein the heat pipes composed of the double pipe and the plurality of pipes are arranged adjacent to each other, and the plurality of pipes adjacent to one of the plurality of pipes are arranged. An integral inclined fin is attached to the pipe.

  The heat pipe heating device according to claim 6 is the heat pipe type heating device according to any one of claims 1 to 5, wherein an inclination angle (α) of the inclined fin with respect to the pipe is 10 to 45 ° with respect to a direction perpendicular to the pipe. Features.

  A heat pipe heating device according to a seventh aspect is characterized in that, in any one of the first to sixth aspects, a groove or a fin is provided on an outer surface of the inner pipe of the double pipe.

  ADVANTAGE OF THE INVENTION According to this invention, in addition to the comfortable heating effect to the front side of a radiation surface, the heat pipe type heating apparatus which can also acquire the efficient heating effect by the natural convection upward is provided.

  The heat pipe type heating device according to the present invention has a double pipe consisting of an inner pipe and an outer pipe, a heat medium flows through the inner pipe, and a working fluid is sealed in a gap between the inner pipe and the outer pipe, A plurality of pipes that constitute an evaporating part of a heat pipe in which hydraulic fluid evaporates by a medium and that communicate with the gap between the inner pipe and the outer pipe of the double pipe and project substantially perpendicular to the double pipe and substantially parallel to each other And a heat pipe condensing part that condenses the working fluid evaporated in the pipe, and a plurality of pipes are provided with inclined fins and a casing is disposed so as to surround the inclined fins. Features.

  Referring to the drawings, as shown in FIGS. 1 and 2, the heat source part is formed by a double pipe 1 composed of an inner pipe 2 and an outer pipe 3, and a heat medium such as hot water is circulated in the inner pipe 2. A working fluid such as pure water is sealed in the gap 4 between the pipe 2 and the outer pipe 3, and the heat of the heat medium is efficiently transferred to the working fluid without releasing the heat of the heat medium to the outside air, and the working fluid is evaporated. An evaporation unit is configured.

  The inner tube 2 is a fin tube (low fin tube, middle fin tube, high fin tube) with fin processing on the outside, or the inner tube 2 is an outer grooved tube with groove processing on the outer surface, etc. By providing the heat transfer promoting means on the outer surface of the inner tube 2, the heat exchange efficiency can be further improved.

  Hot water as a heat medium to be circulated through the heat source unit can be easily supplied to the heating device from the outdoor hot water supply unit, from a hot water tank or the like, from a hot water pipe piped indoors by a joint or the like. .

  The pipe 4 communicates with the gap 4 between the inner pipe 2 and the outer pipe 3 of the double pipe 1, projects a plurality of pipes 5 substantially perpendicular to the double pipe 1 and substantially parallel to each other, and the inclined fins 6 are attached to the plurality of pipes 5. . The evaporated working fluid rises in the plurality of pipes 5 and constitutes a condensing part of the heat pipe that condenses in the pipes 5.

  That is, one large heat pipe is constituted by the double pipe 1 and the plurality of pipes 5. A casing 7 is disposed at the condensing part of the heat pipe so as to surround the inclined fin 6.

  As described above, the evaporated working fluid is condensed in the plurality of pipes 5, and the heat of condensation is transmitted to the inclined fins 6. The heat of the inclined fins 6 is transmitted to the casing 7, and this heat is radiated to the outside. Since the casing 7 also serves as a radiation plate, the casing 7 is preferably made of a metal having good heat conduction.

  Further, since the fins are inclined, the warmed air flows in the direction of the arrow F2 in FIG. 1. With this flow, fresh air is introduced from the bottom as shown by the arrow F1, and air by natural convection flows. As shown by the arrow F3, it is possible to obtain an efficient heating effect upward without installing a fan and causing forced convection.

In order to form the air flow as described above, gaps D <b> 1 and D <b> 2 are provided at least partially between the inner side surface of the casing 7 and the tip end portion of the inclined fin 6. As shown by the arrow F3, the warmed air moves upward through the gap D2 and is discharged from the discharge port E1, and a heating effect by convection can be obtained. The distance W1 between the inner wall of the casing 7 and the tip of the inclined fin 6 is usually about 20 to 60 mm, or between the inner walls of the casing 7 in order to reduce the size of the heating device and obtain a good upward flow of air. About 10 to 50% of the width of the fin is desirable. In FIG. 1, G <b> 1 and G <b> 2 are partition plates that partition the heat radiating portion and the outside thereof, and also serve to fix a plurality of pipes 5.

  The discharge port does not have to be one place as shown in FIG. 1, and may be, for example, a slit-like discharge port E2 made up of a plurality of holes as shown in FIG. 3, as shown in FIG. Thus, the discharge port E3 may be formed in the upper part of the side surface of the casing, and as shown in FIG. 5, the discharge port E4 can be provided in a wide range of the upper part of the side surface of the casing. 6 to 9, the discharge port is collectively referred to as E.

  In order to obtain the thermal uniformity in the entire heating device, it is preferable that the plurality of protruded pipes 5 be provided at substantially constant intervals along the longitudinal direction of the double pipe. Further, it is desirable that a plurality of inclined fins 6 are attached to the plurality of pipes 5 at substantially equal intervals. The inclination angle α of the fin (the angle of the fin 6 with respect to the direction perpendicular to the pipe 5) α is preferably 10 to 45 °, and if the inclination angle α is less than 10 °, the effect of causing air flow by natural convection is sufficiently obtained. If the inclination angle is too large, the number (area) of fins that can be attached in the same space is reduced, the heat dissipation efficiency is likely to be lowered, and it is difficult to stably attach the fins to the pipe.

  Referring to another embodiment of the present invention, in the heat pipe type heating device of FIG. 6, a plurality of support members 8 are erected adjacent to a plurality of pipes 5 so as to be substantially parallel to the plurality of pipes 5. 6 is attached to the pipe 5 and the support material 8, and the flow of air is the same as that of the heating apparatus of FIG. The support material 8 plays a role of stabilizing the inclined fins. As the support material 8, for example, a copper tube or a rod can be applied.

  In the heat pipe type heating device of FIG. 7, two heat pipes composed of a double pipe 1 and a plurality of pipes 5 are arranged adjacent to each other, and inclined fins 6 attached to one of the plurality of pipes 5 are adjacent to each other. The inclined fins 6 attached to the other plurality of pipes 5 are attached so that these inclined fins are inclined downward from the opposite side toward the outside, As shown by the arrow F4, the heated air rises between the two heat dissipating parts, and the fresh air is sucked from the lower portions of both sides of the casing 7, as shown by the arrow F5. ing. In this case, the distance W2 between the tip portions of the opposed inclined fins 6 and 6 is usually about 20 to 120 mm, or of the casing 7 in order to reduce the size of the heating device and obtain a good upward flow of air. About 10 to 50% of the total width of the fins 6 and 6 between the inner walls is desirable.

  The heat pipe type heating device of FIG. 8 has two heat pipes composed of a double pipe 1 and a plurality of pipes 5 arranged adjacent to each other, and an inclined fin 6 attached to one of the plurality of pipes 5 and the adjacent one. The inclined fins 6 attached to the other plurality of pipes 5 are attached so that these inclined fins are inclined upward from the opposite side to the outside, and the air is As indicated by an arrow F6, the air flows from the opposite side of the inclined fins 6 and 6 to both side surfaces of the casing 7 as indicated by an arrow F7. In this case, the distance W3 between the inner wall of the casing 7 and the tip of the inclined fin 6 is usually about 20 to 60 mm, or the casing 7 in order to make the heating device compact and obtain a good upward flow of air. About 10 to 50% of the total width of the fins 6 between the inner walls is desirable.

  The heat pipe type heating device of FIG. 9 arranges heat pipes composed of the double pipe 1 and the plurality of pipes 5 adjacent to each other, and the plurality of one pipe 5 and the other plurality of pipes 5 adjacent to each other, An integral inclined fin 6 is attached, and the air flow is the same as that of FIG.

It is a figure which simplifies and shows the side surface of the Example of the heat pipe type heating apparatus of this invention. It is a figure which simplifies and shows the plane of FIG. It is a figure which shows the other Example of a discharge port. It is a figure which shows the other Example of a discharge port. It is a figure which shows the other Example of a discharge port. It is a figure which simplifies and shows the side surface of the other Example of the heat pipe type heating apparatus of this invention. It is a figure which simplifies and shows the side surface of the other Example of the heat pipe type heating apparatus of this invention. It is a figure which simplifies and shows the side surface of the other Example of the heat pipe type heating apparatus of this invention. It is a figure which simplifies and shows the side surface of the other Example of the heat pipe type heating apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Double pipe 2 Inner pipe 3 Outer pipe 4 Gap between inner pipe and outer pipe 5 Pipe 6 Inclined fin 7 Casing 8 Support material E Release port E1 Release port E2 Release port E3 Release port E4 Release port G1 Partition plate G2 Partition plate G2

Claims (7)

It has a double pipe consisting of an inner pipe and an outer pipe. A heat medium flows through the inner pipe, and a working fluid is sealed in the gap between the inner tube and the outer pipe, and the working fluid evaporates by the heat medium. An evaporation unit is provided, and a plurality of pipes that communicate with the gap between the inner pipe and the outer pipe of the double pipe and project substantially perpendicular to the double pipe and substantially parallel to each other, are evaporated in the pipe. A heat pipe heating device comprising a condensing part of a heat pipe for condensing liquid, wherein a plurality of pipes are provided with inclined fins, and a casing is disposed so as to surround the inclined fins. 2. The heat pipe type according to claim 1, wherein a plurality of support members are erected adjacent to the plurality of pipes and substantially parallel to the plurality of pipes, and inclined fins are attached to the pipes and the support member. Heating device. Heat pipes composed of the double pipe and a plurality of pipes are arranged adjacent to each other, and the inclined fins attached to one of the plurality of pipes and the inclined fins attached to the other plurality of adjacent pipes, The heat pipe type heating device according to claim 1, wherein the inclined fins are attached so as to be inclined downward from the opposite side toward the outside. Heat pipes composed of the double pipe and a plurality of pipes are arranged adjacent to each other, and the inclined fins attached to one of the plurality of pipes and the inclined fins attached to the other plurality of adjacent pipes, The heat pipe heating device according to claim 1, wherein the inclined fins are attached to be inclined upward from the opposite side to the outside. The heat pipe composed of the double pipe and a plurality of pipes is arranged adjacent to each other, and an integral inclined fin is attached to the plurality of pipes adjacent to the one of the plurality of pipes. Item 2. A heat pipe heating device according to item 1. The heat pipe heating device according to any one of claims 1 to 5, wherein an inclination angle (?) Of the inclined fin with respect to the pipe is 10 to 45 degrees with respect to a direction perpendicular to the pipe. The heat pipe type heating device according to any one of claims 1 to 6, wherein a groove or a fin is provided on an outer surface of the inner tube of the double tube.

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