JP2006200846A - Air conditioner for floor/wall surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a floor/wall surface or the like capable of improving air conditioning efficiency of the floor/wall surface or the like, reducing a manufacturing cost, and improving efficiency of construction work. <P>SOLUTION: The air conditioner for the floor/wall surface disperses heat of a heat source pipe from a heat conduction member via a heat exchange member. In the heat conduction member, a two phase condensable working fluid is sealed in a meandering and circulating hollow tubing. A joint for joining the hollow tubing to the heat exchange member and receiving heat is bent back 180 degrees into a U-shape having a certain radius of curvature. The heat exchange member is comprised of a heat source pipe fixing member, and a pair of tubing fixing members. The tubing fixing member engages with the joint by providing a tubing engagement groove engaging with the tubing in a shape and at a position corresponding to the U-shape of the joint of the tubing. The heat source pipe fixing member has a linear heat source pipe engagement groove having an upward opened part for inserting the heat source pipe from above in a center part. Tubing fixing plate parts covering a top face of the tubing fixing member to fix the tubing are provided on both sides of the engagement groove. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cooling / heating device mainly for floors and wall surfaces in a large area such as a floor or a wall surface of a building such as a house or a civil engineering structure.

Conventionally, as a floor or wall heating device of a house, a floor heating device in which a heat radiation device embedded with a heat source pipe is laid in a zigzag below the floor, hot water is circulated in the heat source pipe, heat is exchanged, and heat is radiated (for example, Patent Documents) 1) is known, but this floor heating device lays the heat source pipe on the floor to be heated, so that the length of the heat source pipe is increased, the manufacturing cost is increased, and the circuit is circulated in the long heat source pipe. In addition, since the temperature of the hot water is lowered, there is a disadvantage that the temperature difference between the upstream side and the downstream side of the heat source pipe is large and the heating efficiency is poor.
By the way, recently, in a heat exchanger, a loop type thin tube having a diameter of about 5 mm is brought into contact with a heat source tube, and a medium that becomes a two-phase state of gas and liquid is enclosed in the loop type thin tube, and nucleate boiling is utilized. A heat conduction member and a heat exchanger having a high heat conductivity have been developed by circulating a thermal solvent without requiring a special drive source (Patent Document 2).
Applying this heat exchanger principle to floor / wall heating / cooling, floor / wall heating / cooling device (eg, Patent Document 3, Patent Document) that heats the floor by expanding the heat-dissipating tube from a relatively short heat source tube 4 (patent application by the present inventor)) has been developed.

Japanese Patent Laid-Open No. 11-166743 Japanese Examined Patent Publication No. 6-97147 JP 2003-35427 A Japanese Patent Application No. 2004-216522

By the way, the floor heating apparatus disclosed by patent document 3 meanders the thin pipe | tube with a diameter of about 5 mm which has a thermal radiation part, the part which contacts a heat source pipe of a thin pipe is bent at right angle, comprises a linear part, and becomes a heat source pipe. Although it is in contact, (1) the thin tube is generally a copper hollow tube with a diameter of about 5 mm, so it is difficult to bend it while maintaining its hollow cross-sectional diameter, and (2) A portion for attaching a thin tube must be provided directly on the side wall surface of the heat source tube, and a flexible heat source tube that is easy to handle in a conventional floor heating apparatus such as Patent Document 1 cannot be used. ) Although the working liquid solvent is sealed in the narrow tube, there is a problem that the working fluid, which is a heat medium, does not move smoothly at the right angle.
Therefore, as described in Patent Document 4, the present inventor includes a heat exchange member provided with a heat source groove and a heat conduction groove, and the heat exchange member is a portion where the thin tube contacts the heat source pipe. A narrow tube is fitted in the conduction groove of the heat exchanger that conducts heat from the heat source tube. At this time, the narrow tube is bent at a relatively large radius of curvature instead of a right angle, and has a straight portion and is turned 180 °. The air-conditioning apparatus which set it as the shape made to make this linear part fit to the groove | channel for conduction is proposed.
However, there is a limit in forming a straight portion even with a large curvature radius, and the above problems (1) to (2) have not been solved.
Patent Document 4 describes an embodiment in which the shape of the thin tube of the heat conducting portion is U-shaped so as to have a relatively large radius of curvature, but in order to intersect the U-shaped, a heat source is described. Since the side surface is recessed so as to be embedded in the bottom surface of the tube and the holding member is fitted from below, the processing is complicated, the assembly is troublesome, the construction process is troublesome, and it is not practical.

  The present invention has been made in view of such problems, such as floors and wall surfaces that can improve the heating and cooling efficiency of floors and wall surfaces, reduce manufacturing costs, and improve the efficiency of construction work. It is to provide an air conditioning apparatus.

In order to solve the above-mentioned problems, the invention of claim 1 is a floor / wall surface cooling / heating device that diffuses heat from a heat source pipe through a heat exchange member through a heat exchange member. A two-phase condensable working fluid is sealed in a meandering hollow thin tube, and the hollow thin tube is joined to a heat exchange member and receives heat, and the joint is folded back to 180 ° in a U shape having a certain radius of curvature. The heat exchange member is composed of a heat source tube fixing member and a pair of thin tube fixing members, and the thin tube fixing member is a thin tube fitting that fits the thin tube in a shape and position corresponding to the U-shape of the joint portion of the thin tube The heat source tube fixing member has a straight heat source tube fitting groove having an upper opening for inserting the heat source tube from above at the center, and the fitting portion is fitted with the groove. On both sides, a thin tube is fixed to cover the upper surface of the thin tube fixing member. A floor / wall surface cooling / heating device having a fixed plate portion. The invention according to claim 2, wherein the heat source tube is a flexible synthetic resin hollow tube. It is the air conditioner of the floor and wall surface of description.
According to a third aspect of the present invention, the fitting groove of the heat source tube fixing member has an upper opening narrower than the diameter of the heat source tube, and the cross-sectional shape of the heat source tube fitting groove corresponds to the heat source tube. The floor according to claim 1, wherein the floor has a circular cross-section with an upper opening cut out, and the depth of the heat source pipe fitting groove is deeper than the diameter of the heat source pipe so that the heat source pipe can be inserted from above.・ It is a wall air conditioner.

  Advantageous Effects of Invention According to the present invention, in a cooling / heating device for a floor / wall surface, the effects of improving the cooling / heating efficiency of the floor / wall surface, reducing the manufacturing cost, and dramatically improving the efficiency of construction work can be obtained.

In the following, preferred embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 are exploded perspective views of an air conditioning unit (apparatus) A which is a main part of an embodiment of the present invention, and FIG. 3 is a plan view thereof, which supplies a heat source from a heat source pipe 1 and heat exchange member 3. The heat conducting member 2 composed of a hollow thin tube that diffuses heat under the floor or inside the wall is meandered.
The heat conducting member 2 is formed by folding a hollow thin tube 21 made of copper having an outer diameter of 3.5 mm (may be made of a metal having high heat conductivity such as aluminum or stainless steel) into a letter shape with a curvature radius r of about 14 mm and 180 °. After forming the joint (heat receiving part) 22 and then maintaining a straight part of about 320 mm in length, it is folded back by 180 ° in a U shape to form a heat diffusion part (heat radiating part) 23. A plurality of meandering shapes are repeated, and the heat diffusion portion 23a is configured in a planar zigzag shape having a width of 32 mm and a length of 720 mm as a whole, and a similar zigzag heat diffusion portion 23b is further formed. The parts 23a and 23b are positioned on the left and right with the heat source tube 1 as the center.
These left and right half-sized heat diffusion parts 23a, 23b are connected to both ends by connecting parts 24a, 24b to form an endless loop in which the hollow thin tube 21 circulates as a whole. A heat medium in which two-phase gas and liquid are mixed, that is, a two-phase condensable working fluid is enclosed, and a heat receiving portion to be heated and a heat diffusing portion to dissipate heat are alternately present, and from the heat source pipe 1 of the fluid The working fluid that is the heat medium in the endless loop naturally circulates and moves in one direction without using a check valve or pump due to nucleate boiling of the working fluid in the hollow thin tube 21 due to heating of the Heat in the heat diffusion portions 23a and 23b having the area is dissipated to warm (cool) the floor and walls, thus improving the heat conduction efficiency.

  That is, the joint where the hollow thin tube 21 is joined to the heat exchange member and receives heat is bent with a certain radius of curvature (curvature radius r = about 14 mm), so that the hollow tube 21 is bent while maintaining the hollow state. It is easy to process and the movement of the two-phase condensable working fluid in the narrow tube is also smooth. Further, unlike the small heat exchange in Patent Document 2, it is for indoor cooling and heating, and the hollow thin tube is much longer than that in Patent Document 2, so the movement of the liquid must be made as smooth as possible. In addition, since the inner diameter of the capillary tube must be reduced to about 3 to 8 mm in order to cause nucleate boiling, it is necessary to bend the capillary tube joint with a constant radius of curvature as described above, and the radius of curvature is also compared. The radius of curvature r is preferably 10 mm or more for use on a floor or wall as in the present invention. In addition, the number of turns is not increased so much, and it is preferably 15 × 2 turns or less on one side (in this embodiment, the left and right sides are 12 × 2 turns), and if it is increased more than this, the circulation speed becomes slow and the heat conduction efficiency deteriorates. .

Here, the heat exchange member 3 is provided in the portion where the hollow thin tube 21 is in contact with the heat source tube 1 to exchange heat, and the heat from the heat source tube 1 is conducted to the heat conduction member 2, and this heat exchange member 3 is made of aluminum. A heat source tube fixing member 31 (which may be copper or the like) and a pair of thin tube fixing members 32,
In order to improve the heat conduction of these two members, the thin tube fixing plate portion 313 and the upper flat surface portion 321 are in surface contact with each other and are firmly fixed by the fixing means 33 as will be described later.
A pair of thin tube fixing members 32 of the heat exchange member 3 are provided on the left and right sides of the heat source tube 1 corresponding to the left and right heat diffusion portions 23a and 23b. The length of one thin tube fixing member 32 is the heat diffusion portion 23a. And a narrow tube that fits the thin tube in a shape and position corresponding to the U-shape of the joining portion 22 of the thin tube on the upper flat surface portion 321 of the thin tube fixing member 32. As shown in FIG. 5, the flat U-shaped narrow tube fitting groove 322 of the narrow tube fixing member 32 has an opening 323 that opens upward, and the width and depth are narrow tubes. The shape is substantially the same as or slightly larger than the diameter, and the shape in the depth direction is also U-shaped. Since the hollow thin tube 21 is hollow, it can be inserted from above.
Further, as will be described later, the hollow thin tube 21 is fixed by being bolted so that the thin tube fixing plate portion 313 covers from above, so that it is locked to the groove wall as in the prior art, and to the locking projection separately. There is no need to provide a member.

  Further, the hollow thin tubes 21 of the heat diffusion portions 23a and 23b are connected at both ends by connecting portions 24a and 24b, and the hollow thin tubes 21 as a whole form an endless loop that circulates, so the connecting portions 24a and 24b are fixed. For this purpose, a narrow tube fitting groove 326 (see FIG. 1) is provided in the vicinity of both end portions 325 of the thin tube fixing member 32, and is inclined in a concave shape to the left and right in a straight line. 24b are fitted and fixed, and are installed across the heat source tube 1 and the bottom surface portion 315 of the heat source tube fixing member 31 of the heat exchange member 3.

  The heat source tube fixing member 31 of the heat exchange member 3 has the same length as that of the thin tube fixing member 32 and is not less than the entire length (720 mm) of the heat diffusion portion 23a. A pair of straight heat source pipe fitting grooves 311 having an opening 312 opened upward for inserting 1 from above, and covering the upper surface of the thin tube fixing member 32 on both sides of the fitting groove 311 A thin tube fixing plate portion 313 is provided. The thin tube fixing plate portion 313 is provided with through holes 314 at appropriate positions, bolts 33 are inserted into the through holes 314, and tightened to the female screw portion 324 provided on the upper flat portion 321 of the thin tube fixing member 32 to fix the heat source tube fixing member 31 and the thin tube. The member 32 is coupled and the hollow thin tube 21 is firmly fixed to the groove wall surface.

The opening 312 of the fitting groove 311 of the heat source pipe fixing member 31 is narrower than the diameter of the heat source pipe 1 and opened upward, and the sectional shape of the fitting groove 311 of the heat source pipe is the same as that of the heat source pipe 1. Correspondingly, the upper opening 312 has a circular cross section and the depth of the heat source tube fitting groove 311 is deeper than the diameter of the heat source tube 1, while the material of the heat source tube 1 is an elastic composite. Since this is a hollow tube made of resin, especially in this embodiment a cross-linked polyethylene that has elasticity and flexibility, if it is pressed from above, it will be slightly deformed and easily fitted and fixed in the heat source tube fitting groove 311. The Therefore, the heat source tube 1 can be easily assembled, and the work efficiency during construction is improved.
The thin tube fixing plate portion 313 of the heat source tube fixing member 31 is fitted to the thin tube fixing member 32 of the other heat exchange member 3 with the U-shaped coupling portion 22 of the hollow thin tube, and then the upper plane surface of the thin tube fixing member 32. It fixes to the internal thread part 324 provided in the part 321 so that the upper surface may be covered with the bolt 33.
As will be described later, a desired number of these units are laid out. In the plurality of heat exchange members 3, the heat source tube fitting groove 311 of the heat source tube fixing member 31 is installed in a straight line, and the heat source tube is fitted. The heat source pipe 1 that supplies hot water or cold water is pressed and fitted from above into an opening 312 that opens above the joint groove 311.

Therefore, the heat from the heat source tube 1 is conducted from the heat source tube fixing member 31 of the heat exchange member 3 to the coupling portion 22 of the hollow thin tube 21 via the thin tube fixing member 32, and the outer peripheral surface of the thin tube 21 other than the coupling portion 22 is transmitted. Including the outer U-shaped portion 23, it becomes a heat diffusing portion and releases heat.
Thus, the air conditioning unit A is easy to produce because the hollow thin tube 21 as the heat conducting member 2 may be bent at a relatively large radius of curvature to form a U-shape and zigzag as a whole, and It is only necessary to prepare a bending device for hollow tubules with one kind of radius of curvature, and processing is simple and inexpensive. Further, since the U-shaped outer peripheral surface of the hollow thin tube 21 contacts the wall surface of the thin tube fitting groove 322 of the heat exchange member 3 over the entire range, the heat conduction efficiency is good.
In addition, since the hollow thin tube is formed in a zigzag shape, the heat diffusing portion 23 can be densely arranged, and the thermal solvent smoothly circulates in the hollow thin tube 21 without a portion that bends at right angles, so that the thermal efficiency is improved and the hollow thin tube is enclosed in the hollow thin tube The amount of the thermal solvent (alcohol in this embodiment) may be small and inexpensive. In addition, since there are no movable devices such as check valves and pumps, the air conditioner installed under the floor is optimal with almost no maintenance.

  By the way, the unit area of the air conditioning unit of this embodiment is about twice the area of about 32 mm wide and 720 mm long, and can secure a relatively wide area of about 750 mm × 750 mm, and can be easily installed on the floor of a room. When the floor / wall surface cooling / heating device is installed on the floor, as shown in FIGS. 2 and 4, the heat insulating member 4 and the heat which are radiated on the heat insulating material 4 are spread on the floor surface as a base. The replacement member 3 is installed, and the heat source tube 1 is fitted and fixed in the fitting groove 311 of the heat source tube fixing member 31 to form a flat surface, and the aluminum is uniformly distributed so that the heat is evenly spread thereon. A thin sheet 5 is laid, and a flooring material 6 and the like for forming a floor are constructed thereon.

Next, the construction method of the present embodiment will be described with reference to FIG. 6, and the case where the four air conditioning units (devices) described above are used will be described.
First, the heat insulating material 4 is spread on the floor surface of a desired foundation for air conditioning, and the air conditioning unit A1 is spread on the heat insulating material 4 as shown in FIG. 6, but the heat source pipe fixing member 31 of each air conditioning unit A1 is spread. Is arranged as straight as possible. In the embodiment of FIG. 6, the heat source pipe fitting groove 311 between the air conditioning unit A1 (A) and the air conditioning unit A2 is a straight line, and the heat source pipe fitting groove 311 between the air conditioning unit A3 and the air conditioning unit A4 is a straight line. Arrange as follows. Next, the flexible heat source pipe 1 mainly composed of cross-linked polyester is fitted into the heat source pipe fitting groove 311 of the air conditioning unit A1 by pressing from above, and then the heat source pipe fitting groove 311 of the air conditioning unit A2 from above. When it is pushed and fitted and comes out of the heat source pipe fitting groove 311, the flexible heat source pipe 1 is bent appropriately and led to the heat source pipe fitting groove 311 of the air conditioning unit A 3. If it press-fits in the heat source pipe fitting groove 311 with the air conditioning unit A4, the installation of the floor air conditioning device is completed. After that, since the four air conditioning units A form a flat surface, a floor incorporating an air conditioning unit is completed by laying a soaking plate 5 of aluminum and flooring material 6 forming the floor thereon. To do.

  In this way, there is no need to place long heat source tubes in a zigzag manner as in the prior art, and it is only necessary to lay the air conditioning unit A and arrange the heat source tubes in a U-shape later, which makes the construction simple and easy. In addition, the expensive heat source pipe is short, and it is only necessary to carry it into the construction site in units of the air conditioning unit A. The heat source pipe can be used in a state of being wound around a drum, and the construction efficiency is greatly improved. It is also easy to expand the air conditioning area.

  As long as the characteristics of the present invention are not impaired, the present invention is not limited to the above-described embodiment. For example, the hollow thin tube 21 is made of copper, but may be made of stainless steel, and the fixing means for the bolt 33 is fastened with an eyelet. It may be. Moreover, in addition to the underfloor air conditioner, it may be used for various air conditioners such as floor surfaces and wall surfaces of buildings and civil engineering, and other snow melting devices.

It is a disassembled perspective view of the whole air conditioning apparatus of the Example of this invention. It is a disassembled perspective view (cross section) of the principal part after construction of the air conditioning apparatus shown in FIG. It is a top view from the upper part of the heat conductive member of the air conditioning apparatus shown in FIG. It is sectional drawing after assembling the air conditioning apparatus shown in FIG. 5A is a plan view of a thin tube fixing member in the heat exchange member shown in FIG. 4, FIG. 5B is a sectional view taken along line XX in FIG. 5A, and FIG. 5C is FIG. FIG. It is explanatory drawing in the case of constructing using the four air-conditioning units of the Example of this invention.

Explanation of symbols

A to A4 ... air conditioning unit (apparatus), r ... radius of curvature 1 ... heat source pipe 2 ... heat conduction member, 21 ... hollow thin tube, 22 ... junction (heat receiving part),
23, 23a, 23b ... heat diffusion part (heat dissipation part), 24a, 24b ... connection part 3 ... heat exchange member,
31 ... Heat source tube fixing member, 311 ... Heat source tube fitting groove, 312 ... Opening, 313 ... Thin tube fixing plate portion,
314 …… through hole, 315… bottom surface,
32 ... Thin tube fixing member, 321 ... Upper flat surface portion, 322 ... Thin tube fitting groove, 323 ... Opening portion, 324 ... Female thread portion, 325 ... Both ends, 326 ... Connecting thin tube fitting groove
33 ... Bolt (fixing means)
4 ... Insulating material, 5 ... Soaking sheet, 6 ... Follow ring material

Claims (3)

  A floor / wall cooling / heating device for diffusing heat from a heat conducting member through a heat exchange member through a heat exchange member, wherein the heat conducting member has a two-phase condensable working fluid in a meandering hollow thin tube The joined portion that is sealed and receives heat by joining the hollow thin tube to the heat exchange member is folded back to 180 ° in a U shape having a certain radius of curvature, and the heat exchange member is paired with the heat source tube fixing member. The thin tube fixing member is provided with a thin tube fitting groove for fitting the thin tube in a shape and position corresponding to the U-shape of the thin tube joint portion, and the joint portion is fitted, and the heat source tube is fixed. The member has a straight heat source tube fitting groove having an upper opening for inserting the heat source tube from above at the center, and the narrow tube is fixed on both sides of the fitting groove by covering the upper surface of the thin tube fixing member. Floor and wall surface characterized by having a narrow tube fixing plate part Heating   The floor / wall surface cooling / heating device according to claim 1, wherein the heat source tube is a hollow tube made of a synthetic resin having elasticity.   The fitting groove of the heat source tube fixing member has an upper opening that is narrower than the diameter of the heat source tube, and the cross-sectional shape of the heat source tube fitting groove is notched in the upper opening corresponding to the heat source tube. The floor / wall heating / cooling apparatus according to claim 1, wherein the heat source pipe fitting groove has a circular cross section and the depth of the heat source pipe fitting groove is deeper than the diameter of the heat source pipe so that the heat source pipe can be inserted from above.

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