JPH0320699Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a solar heat collector, particularly a heat pipe type solar heat collector.

Conventional technology and its problems Recently, as this type of heat pipe type solar collector, one end of a plurality of parallel heat collecting tubes attached to a heat collecting plate in heat transfer contact state is used, and the inner tube is connected to water, etc. A heat pipe that is connected to the circumferential wall of an outer tube of a double-tube header that serves as a heat medium passage, and forms a sealed container with the header outer tube and a heat collecting tube, with the former serving as a condensing section and the latter serving as an evaporating section. There have been proposals to make the

However, in such a heat collector, the heat collection plate and the heat collection tube are housed in a heat collector frame made of extruded aluminum or the like in a rectangular shape, and the upper surface of the frame is covered with a transparent material such as glass. It is formed into a flat box shape, but when the header section is also placed in the frame at the same time, not only the effective heat collecting area in the frame is reduced by the installation space, but also the heat pipe There is a problem in that the high heat of the outer tube of the header, which acts as a condensing part, causes convection within the heat collecting chamber, resulting in increased heat loss from the outer tube.

On the other hand, when the header part is provided outside the heat collector frame, the main body part of the heat collector formed by the frame body and the header part are connected via a heat collecting pipe, so the heat collecting The overall strength of the vessel is poor,
This poses problems such as being troublesome to handle and undesirable in terms of appearance.

This idea attempts to solve these problems by constructing the entire heat collector, including the heat collector body and the header part, into one piece, which has excellent strength and appearance. However, it is possible to simplify the structure and assembly as much as possible, and also to prevent mutual thermal interference between the heat collection chamber in which the heat collection plate is arranged and the header storage chamber in which the header is stored. The purpose is to provide a heat pipe type solar collector.

Means for Solving the Problems For the above purpose, the heat pipe type solar collector according to the present invention will be described with reference to the reference numerals of the illustrated embodiments. A plurality of heat collecting tubes 6 are attached to the heat collecting plate 5 in parallel in a heat transfer contact state, and one end of these heat collecting tubes 6 is an outer tube of a header 10 consisting of a double tube with an inner tube 11 as a heat medium passage. In the solar heat collector, the header outer tube 12 and the heat collecting tube 6 constitute a heat pipe in which the former is a condensing part and the latter is an evaporating part. However, a pair of left and right side frame members 3b, 3b, a lower horizontal frame member 3c connected between their lower ends, and the same side frame members 3b, 3b
an upper horizontal frame member 3 connected between the upper end portions and partitioning between the heat collecting chamber 1a in which the heat collecting plate 5 is arranged and the header storage chamber 2a in which the header 10 is arranged;
a, and is surrounded by the side frame members 3b, 3b, the lower horizontal frame member 3c, and the upper horizontal frame member 3a.
A heat insulating material 4 is provided at the lower part of the frame member 3 and held by each of the frame members 3a, 3b, and 3c, and the heat collecting plate 5 is disposed on the upper surface side of the heat insulating material 4. 8 is disposed, and the transparent body 8 is restrained and fixed by a glass retainer 32 that is engaged and fixed on each of the frame members 3a, 3b, and 3c, and the upper horizontal frame member 3a has two The upper frame material 31 is divided
b and a lower frame member 31a, and both upper and lower frame members 31b, 31a are engaged and connected to each other by an engaging portion 16 to form the heat collecting chamber 1a and the header storage chamber 2.
A partition wall 34 is configured to partition between the upper and lower frame members 31b and 31a.
The heat collecting pipe 6 is passed through the heat collecting chamber 1a into the header storage chamber 2a through the notch 35 provided in the four portions, and the header storage chamber 2a is connected to the left and right side frame members 3b, 3b. Heat collecting part 1
It is characterized in that the outside is covered by a header cover 14 having a U-shaped cross section and disposed between the extension portions from the base.

Embodiments Hereinafter, embodiments of this invention will be described with reference to the accompanying drawings.

Figure 1 shows the entire solar heat collector A according to this invention, and Figures 2 and 3 show details of the structure of each part, where 1 shows the heat collecting part and 2 shows the heat exchange part. show.

The heat collecting section 1 has a heat insulating material 4 placed inside a heat collector frame 3 formed into a rectangular frame made of extruded aluminum, etc., at the bottom of which is held by the frame 3, and on the top surface side of the heat insulating material 4. A heat collecting plate 5 is disposed over almost the entire surface, and a plurality of heat collecting pipes 6 are attached in parallel to the lower surface of the heat collecting plate 5 in thermal contact with the heat collecting plate. The lower end of each heat collecting pipe 6 is orthogonally connected to a common communication pipe 7, and the upper end thereof penetrates the upper horizontal frame member 3a of the frame body 3 and projects to the outside thereof. The header 10 is connected to the peripheral wall of the outer tube 12 of the header 10. Reference numeral 8 denotes a transparent body such as transparent glass disposed to cover the upper surface of the heat collecting section 1 .

The heat exchange section 2 is provided adjacent to the upper end of the heat collecting section 1, and includes a header 10 disposed close to and parallel to the upper horizontal frame member 3a of the frame body 3;
It has a header cover 14 that covers the outside thereof with a heat insulating material 13 (see FIG. 2) interposed therebetween.

The header 10 is composed of a double tube, the inner tube 11 of which constitutes a heat medium passage through which a heat medium such as water circulates, and the outer tube 12 constitutes a condensing section of the heat pipe. That is, both ends of the inner tube 11 protrude from the outer tube 12 so that it can be connected to the heat medium circulation circuit, and both ends of the outer tube 12 are drawn and hermetically joined to the circumferential surface of the inner tube 11. , a heat collecting pipe 6 and a lower communication pipe 7 connected to the peripheral wall thereof form a sealed vacuum container, and a working fluid is sealed inside to form an integrated heat pipe as a whole. Therefore, the heat collecting plate 5
The heat collecting tube 6 in contact with the heat pipe acts as an evaporation section of the heat pipe. Further, a large number of disc-shaped fins 15 are attached to the outer peripheral surface of the inner tube 11 in order to increase heat exchange efficiency. And outer tube 1
2 is to prevent the working fluid from accumulating inside even if the slope of the roof where the heat collector A is installed changes.
The lower part of the peripheral wall connected to the heat collecting pipe 6 is formed into a guiding inclined wall 12a having a funnel-shaped cross section, and the cross section as a whole has a substantially water drop shape.

Thermal insulation material 13 surrounding the header 10
is made of glass wool, etc., and prevents heat dissipation to the outside from the outer tube 12, which becomes hot, and protects the header due to its vibration-proofing effect, making it difficult for defects such as loosening to occur in the joints of related parts. I take it as a thing.

By the way, the heat collector frame 3 is shown in FIGS.
As shown in the figure, a pair of left and right side frame members 3b, 3b made of extruded aluminum moldings are continuous to the heat collecting section 1 and the heat exchange section 2, and a lower horizontal frame member 3c is connected between their lower ends. It consists of an upper horizontal frame member 3a that connects the upper ends of the same side frame members 3b and 3b, and the transparent body 8 is disposed on these frame members 3a, 3b, and 3C to cover the upper surface of the heat collecting part 1. A glass retainer 32 is engaged and fixed to restrain and fix the peripheral edge of the glass. Furthermore, in the region of the heat collecting section 1 surrounded by the frame members 3a, 3b, and 3c, the heat insulating material 4 has a peripheral edge portion held by the U-shaped heat insulating material holding portion 31 at the bottom of these frame members. It is assumed that it has been retained.

Further, as shown in FIGS. 2 and 4, the upper horizontal frame material 3a has a portion that corresponds to the main part of the frame material vertically.
It is divided into a lower frame member 31a and an upper frame member 31b, which are engaged and connected to each other by an engagement portion 16. And the upper frame 31b
The lower part of the heat collecting chamber 1a is the upper space inside the frame 3.
and the header storage chamber 2a inside the header cover 14.
A partition wall 34 separates the heat collecting pipe 6 from the heat collecting pipe 6 through an inverted U-shaped notch 35 provided in the partition wall 34. Partition wall 34
may be constructed of both the upper and lower frame members 31b and 31a, or the cutout portion 35 may be provided on the lower frame member 31a side.

The header cover 14 is made of an extruded aluminum material or the like having a substantially U-shaped cross section, and has an engaging protrusion 36 on the upper and lower edges of the opening side with an approximately L-shaped cross section and an arrow-shaped engaging portion at the tip. 36 are provided,
The engaging protrusions 36, 36 are connected to the upper frame 3a of the frame 3,
That is, it is detachably attached to the horizontal frame member 3a by being engaged with corresponding engaging protrusions 37, 37 provided protrudingly from the lower frame 31a and the glass retainer 32a. In addition, this header cover 14 is formed at the same height as the heat collector frame 3, and both upper and lower surfaces are located on the same plane as the frame 3, and the openings at both ends are the frame 3 extending from the heat collecting part 1. side frame material 3b,
3b, and as a result, the heat collecting section 1 and the heat exchange section 2 appear as a continuous integral body.

In the solar heat collector A described above, the heat collecting tube 6 is heated via the heat collecting plate 5 by sunlight transmitted through the transparent body 8, and the working fluid sealed therein is caused to evaporate. This evaporated high-temperature steam rapidly moves from the heat collection tube 6 into the outer tube 12 of the header 10 above, exchanges heat with a heat medium such as water flowing in the inner tube 11, and heats the heat medium. The working fluid condensed in the outer tube 12 by this heat exchange flows down into the heat collecting tube 6 again solely by the action of gravity, and the working fluid in each heat collecting tube 6 is flown down into the heat collecting tube 6 by the communication pipe 7 connected to the lower end of the working fluid. By repeating the heating and evaporation cycle again while maintaining the liquid level at an average level, solar heat energy is continuously transferred to the heat medium in the header inner tube 11.

Therefore, the solar heat collector A as described above can be used in either a natural circulation type or forced circulation type solar water heater by connecting both ends of its inner tube to the heat medium circulation circuit surrounding the heat storage tank. Applicable.

Effects of the invention As described above, this invention has an upper horizontal frame member 3 between the heat collecting chamber 1a in the frame 3 where the heat collecting plate 5 is arranged and the header storage chamber 2a where the header 10 is arranged.
A partition wall 34 is provided to separate the two chambers from each other. Therefore, the entire surface of the inside of the heat collection chamber 1a can be used as an effective heat collection area without being restricted by the header 10, improving heat collection efficiency, and the header storage chamber 2a is heated to a considerably high temperature. It is possible to reduce convection of air with the heat collection chamber 1a, which is relatively low temperature. Therefore, heat loss due to outward heat dissipation from the header outer tube 12 can be reduced, and the efficiency of transmitting solar thermal energy to the heat medium flowing through the header inner tube 11 can be improved.

In addition, since the heat collecting part 1 of the heat exchanger and the heat exchange part 2 including the header 10 are connected in series via the left and right side frame members 3b, 3b, the whole is integrated. It can be handled as a body-shaped heat exchanger, has excellent strength, and has a good appearance.

Furthermore, the heat exchanger frame 3 has a pair of left and right side frame members 3.
b, 3b, a lower horizontal frame member 3c, and an upper horizontal frame member 3a, and a heat insulating material 4 is provided at the lower part of the heat collecting part 1 surrounded by them, and is held by the frame member. It is possible to use a heat insulating material that also serves as the bottom plate of the heat collecting section 1, which simplifies the structure and reduces the weight.
It is divided into an upper frame member 31b and a lower frame member 31a, which are engaged and connected, and a heat collecting pipe is inserted through a notch 35 provided in a partition wall portion of one of the frame members. 6 is made to penetrate from the heat collection chamber 1a to the header storage chamber 2a, and when assembling, the insulation material 4
After installing the heat collecting plate 5 together with the heat collecting pipe 6, the upper frame member 31b of the upper horizontal frame member 3a is attached to the lower frame member 3.
1a, and then the header cover 14
By attaching the above, it is possible to relatively easily assemble the heat exchanger, especially the main structural parts, and the strength of the heat collector after assembly can be made sufficiently high.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing a solar heat collector according to this invention with a part cut away, Fig. 2 is an overall perspective view with a part of the middle part omitted, and Fig. 2 shows an entire middle part. Figure 3 is a sectional view taken along the line in Figure 1 with some parts omitted, Figure 3 is a sectional view taken along the line in Figure 1 with some intermediate parts omitted, and Figure 4 is a perspective view of the main parts in an exploded state. It is a diagram. A... Solar heat collector, 1... Heat collection part, 1a...
Heat collection chamber, 2... Heat exchange section, 2a... Header storage chamber, 3... Heat exchanger frame, 3a... Upper horizontal frame material,
3b... Side frame material, 3c... Lower horizontal frame material, 5... Heat collection plate, 6... Heat collection pipe, 10... Header, 11...
...Header inner pipe, 12... Header outer pipe, 13...
...Insulating material, 14... Header cover, 16... Engaging portion, 18... Transparent body, 31a... Bottom frame material, 31
b...Top frame material, 32...Glass holder, 34...
Partition wall, 35... cutout.

Claims (1)

[Claims for Utility Model Registration] A plurality of heat collecting tubes 6 are attached in parallel to a heat collecting plate 5 arranged in a heat collector frame 3 in a heat transfer contact state, and one end of these heat collecting tubes 6 is Outer tube 1 of header 10 consisting of a double tube with inner tube 11 as a heat medium passage
In the solar heat collector, the header outer tube 12 and the heat collecting tube 6 constitute a heat pipe in which the former serves as a condensing section and the latter serves as an evaporating section. However, a pair of left and right side frame members 3b,
3b, a lower horizontal frame member 3c connected between their lower ends, a heat collecting chamber 1a connected between the upper ends of the same side frame members 3b, 3b, in which the heat collecting plate 5 is arranged, and the header 10. The heat collecting section 1 is composed of an upper horizontal frame member 3a that partitions the header storage chamber 2a in which the heat collecting section 1 is surrounded by the side frame members 3b, 3b, the lower horizontal frame member 3c, and the upper horizontal frame member 3a. A heat insulating material 4 is provided at the lower part of the frame member 3 and held by each of the frame members 3a, 3b, and 3c, and the heat collecting plate 5 is disposed on the upper surface side of the heat insulating material 4. 8
are arranged, and the transparent body 8 is connected to each of the frame members 3a, 3
The upper horizontal frame member 3a is divided into upper and lower halves, and is composed of an upper frame member 31b and a lower frame member 31a. ,
These upper and lower frame members 31b and 31a form the engaging portion 16.
A partition wall 34 that is mutually engaged and connected to partition the heat collection chamber 1a and the header storage chamber 2a is constructed, and is provided on the partition wall 34 portion of either one of the upper and lower frame members 31b and 31a. The heat collecting pipe 6 passes through the heat collecting chamber 1a to the header storage chamber 2a through the notch 35, and the header storage chamber 2a is connected to the left and right frame members 3.
A heat pipe type solar heat collector characterized in that the outside is covered by a header cover 14 having a U-shaped cross section and disposed between the extension portions from the heat collecting portion 1 of the heat pipes b and 3b.