JP2006029732A - Heat collection duct and ventilation system using heat collection duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact heat collection duct and a ventilation system using the heat collection duct capable of obtaining sufficient ventilation quantity while improving use efficiency of solar heat. <P>SOLUTION: In an outer cylinder 6 for forming an air passage 24, at least a half side part is provided as a translucent part 22 and a heat insulation part 18 is formed at the other half side part and a heat collection panel 8 having a light receiving surface 30 facing the translucent part 22 is provided in the air passage 24. In addition, the heat collection panel 8 is installed with a first air passage part 24a interposed between the translucent part 22 and itself and a second air passage part 24b interposed between the heat insulation part 18 and itself. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat collection duct and a ventilation system using the heat collection duct.

  In order to save energy in the ventilation system of houses, etc., an air flow path with a lower outer end opening and a lower surface side shielded by a heat insulating material is provided obliquely along the lower surface of a metal roof plate that also serves as a heat collecting panel. It has been known that it is communicated from the upper part of the road to the floor outlet through a vertical duct, and the air heated by the roof plate is collected through the air channel and blown out from the floor outlet. (Patent Document 1).

Although it is not a ventilation system, an inner tube as a heat medium path for water or the like is provided in a translucent outer tube in a double cylinder shape, and a vacuum heat insulating space is formed between the inner and outer tubes, and the space In addition, there is known a heat collector provided with a strip-shaped heat collecting plate that is long in the passage direction and in which the inner tube is fitted in a fitting groove that is recessed in the intermediate portion in the width direction. (Patent Document 2).
JP 2002-235955 A No. 58-9738

  In a ventilation system using a metal roof plate as a heat collecting panel as in Patent Document 1, there is a disadvantage that a considerable part of the solar heat received by the panel escapes to the outside. In order to avoid this, it is also possible to use a panel-type heat collector with a surface portion formed of a transparent flat plate such as glass. In this case, a thick glass plate or the like must be used to ensure strength. In addition, the cost increases, and distortion may occur when the area is large. Moreover, when trying to green the rooftop area, it is difficult to introduce a ventilation system in which a part of the rooftop is a heat collection panel, and a system with a high degree of freedom in the layout of the heat collection section is desired.

  The present applicant has intensively studied these problems and arrived at the idea that the ventilation duct itself also has a heat collecting function as a heat collecting means of a ventilation system having good workability. However, there are various problems to realize such an idea. For example, as disclosed in Patent Document 2, a structure in which a vacuum is applied between the outer tube and the inside of the inner tube as a heat medium path is applied to the ventilation duct. Then, when the inner pipe is made the thickness of a normal duct, it is surrounded around it, so that the entire duct becomes bulky.

  Therefore, the present invention provides a heat collection duct having a high degree of freedom in construction and excellent in heat collection performance, workability, and economy, and a ventilation system using the heat collection duct with a compact configuration. At least one half side portion of the outer cylinder 6 for forming 24 is a translucent portion 22, a heat insulating portion 18 is formed on the other half side portion, and light reception facing the translucent portion 22 in the air flow path 24 is performed. The thing which installed the heat collecting plate 8 which has the surface 30 is proposed.

  The first means is a heat collecting duct, and at least one half side portion of the outer cylinder 6 for forming the air flow path 24 is used as the light transmitting portion 22, and the heat insulating portion 18 is formed on the other half side portion, and A heat collecting plate 8 having a light receiving surface 30 facing the light transmitting portion 22 is installed in the air flow path 24.

  The “translucent portion” is preferably formed of a transparent material such as glass or transparent acrylic. In addition, for example, while forming the whole outer cylinder of a duct with a transparent material, a heat insulating material can also be affixed as a "heat insulating part" to the inner surface side of one side part. In addition, it is good to form a heat insulation part over the full length direction of a heat collection duct.

  The “heat collecting plate” is preferably formed of iron or other metal that easily absorbs heat and emits heat, and the surface of the heat collecting plate is a highly heat-absorbing photoselective paint (for example, black chrome having an absorption rate of 0.98). Apply plating).

  The second means includes the first means, and the heat collecting plate 8 has the first air flow path portion 24a between the light transmitting portion 22 and the heat insulating portion 18 between the first air flow passage portion 24a and the heat insulating portion 18. Two air flow path portions 24b are respectively interposed.

  The first air flow path portion 24a and the second air flow path portion 24b do not need to be spatially blocked by the heat collecting plate 8. Note that almost the entire surface of the heat collecting plate 8 faces the first air flow path portion 24a, and almost the entire back surface of the heat collecting plate 8 faces the second air flow passage portion 24b. It is good to provide so that heat may be radiated from each side.

  The third means includes the first means, and forms a heat storage layer 20 between the second air flow path portion 24 b and the heat insulating portion 18.

  The “heat storage layer” is preferably formed of PCM (Phase Change Material), that is, a latent heat storage material.

  The fourth means includes the first means, the second means, or the third means, and is provided in the outer cylinder 6 shaped like a cylinder so as to be rotatable about its cylinder axis. Support means 10 for supporting 8 is provided.

  The “heat collecting plate” can be manually or automatically rotated.

  The “supporting means” can be composed of a rotating shaft and a bearing fixed to the inner side in the width direction of the heat collecting plate, and can be configured to protrude inward from the rotating rings fitted to the outer surfaces of both ends of the outer cylinder. You may comprise by latching the longitudinal direction both end surfaces of a heat collecting plate with a pawl. These configurations will be described later.

  The heat insulating portion 18 is preferably formed to be slidable with respect to the inner surface along the inner surface of the outer cylinder portion between both end portions of the heat collecting plate 8.

  The fifth means includes the fourth means, and a translucent rotating shaft 10c is installed between the bearings 10a and 10b provided with the support means 10 on both ends of the outer cylinder 6. Further, the heat collecting plate 8 is formed into a band plate shape having a fitting groove portion 8a at the intermediate portion in the width direction, and the rotary shaft 10c is fitted into the fitting groove portion 8a.

  The sixth means includes the fourth means or the fifth means, and the heat collecting plate 8 is formed so as to be rotatable around the rotation shaft 10c by the driving device 40 using sunlight as an energy source. ing.

  Specifically, the heat collecting plate 8 may be provided so as to rotate following the position of the sun using a motor or the like using a solar cell as a driving source, and further based on year-round position data of the sun. The heat collecting plate 8 may be provided so as to be rotated by an annual program. Details of the program will be described later.

  The seventh means has either the second means or the third means, and the outer cylinder 6 is formed in a rectangular cylinder shape, and the upper side wall portion corresponding to one side of the rectangle is formed in the above-described manner. The light transmitting portion 22 and the three side walls corresponding to the other three sides are formed in the concave heat insulating portion 18, and the heat collecting plate is at least the bottom wall portion of the concave heat insulating portion 18. And a horizontal plate portion 8c supported by the second air flow path portion 24b.

  The “horizontal plate portion” can be supported with a spacer interposed between the bottom wall portion of the U-shaped heat insulating portion.

  The heat collecting plate can be further formed in a U-shaped cross section with standing upright from both sides of the horizontal plate portion and at a predetermined interval from the three-side side wall portion.

  The eighth means is a ventilation system using a heat collecting duct, and the heat collecting duct 4 described in any one of the first to seventh means is placed upstream of the outdoor space such as the roof of a building. And the downstream part of the heat collecting duct 4 is connected to the air conditioning space A in the building via the air conditioner 54.

 The ninth means includes the eighth means, a plurality of the heat collecting ducts 4 are provided in parallel, and the upper end portions of these heat collecting ducts are connected to a single heat collecting header 36, The air conditioner 54 communicates with the heat header.

According to the invention relating to the first means, the following effects can be obtained.
○ The duct of this application has a translucent part 22 on one half side of the outer cylinder 6 and a heat insulating part 18 on the other half side to combine the functions of a heat collector. Free layout is possible, for example, a small space around the rooftop green belt can be used effectively, or a heat collecting duct is installed parallel to the toplight between the toplight rows on the roof of a factory with folded plates Can be applied and the scope of application can be greatly expanded.
In addition, by making the outer shape of the heat collector a duct type, it is possible to eliminate the size limit due to distortion and improve the workability compared to a panel type heat collector.
○ Since the overall shape of the heat collector is a duct type that is superior in strength to the panel type, that is, a cylinder or a polygonal cylinder, the thickness of the glass or the like when the cylinder is formed of a transparent material such as glass or acrylic The material cost can be reduced by reducing the size.
In addition, the duct of the present application has high heat collection efficiency because the heat collecting plate 8 is provided in the air flow path 24 in the outer cylinder.
○ The heat collecting plate 8 is oriented so as not to interfere with the air flow by facing the translucent part 22, so that the air flow area of the air flow path 24 is not reduced and a compact and large flow rate ventilation is obtained. It is done.

  According to the invention relating to the second means, the heat collecting plate 8 has the first air flow path portion 24a between the heat transmitting portion 22 and the second air flow path portion between the heat insulating portion 18 and the heat insulating portion 18. Since 24b is interposed, the heat of the sunlight irradiated to the surface of the heat collecting plate 8 through the light transmitting portion 22 is transferred from the surface to the first air flow path portion 24a as the convective heat, and the back surface of the heat collecting plate 8 Is emitted to the second air flow path portion as radiant heat, and thus heat can be efficiently taken out via the first and second air flow path portions 24a and 24b.

  According to the invention relating to the third means, since the heat storage layer 20 is formed between the second air flow path portion 24b and the heat insulating portion 18, heat escape from the second air flow path portion 24b to the outside is prevented. The efficiency of heat extraction can be further increased.

  According to the fourth means, since the heat collecting plate 8 is provided in the cylindrical outer cylinder 6 so as to be rotatable around its cylinder axis, the width of the heat collecting plate 8 is taken to fill the inner diameter of the outer cylinder. The area of the light receiving surface 30 can be increased, and the effective light receiving area can be increased by adjusting the direction of the heat collecting plate following the sun.

According to the 5th means, there exist the following effects.
Since the rotating shaft 10c is fitted in the fitting groove 8a of the heat collecting plate 8, the rotational force can be easily transmitted to the heat collecting plate 8 through the rotating shaft and can be easily assembled.
○ Since the rotating shaft 10c is made of a transparent material, the light receiving surface 30 of the heat collecting plate 8 cannot be shaded, and heat collecting efficiency is good.
○ Further, unlike the above-mentioned Patent Document 2, the air flow path is formed outside the rotating shaft 10c, and the diameter of the rotating shaft is smaller than the inner tube of Patent Document 2 which is the air flow path. Since it can be formed, the entire duct is not bulky.

  According to the sixth aspect of the invention, the heat collecting plate 8 is formed so as to be rotatable around the rotating shaft 10c by the driving device 40 using sunlight as an energy source. All can be covered by solar energy, which is advantageous.

  According to the invention relating to the seventh means, the outer cylinder 6 is formed in a rectangular cylinder shape, and the upper side wall portion corresponding to one side of the rectangle is the translucent portion 22, and on the other three sides. Since the corresponding three-way side wall portion is formed in the concave heat insulating portion 18, it can be manufactured at a lower cost than the case where the entire outer cylinder is formed of glass or acrylic.

According to the eighth aspect of the invention, since the heat collection duct according to the first to seventh means is applied to a building ventilation system, the ventilation amount can be increased and the thermal efficiency can be increased. Since the duct is disposed obliquely with the upstream portion down, the following effects are produced.
○ Since the outside air inlet of each duct is on the lower side, intrusion of rainwater and the like can be prevented.
○ The air in each duct installed at an angle is warmed and rises, so it is easy to draw it into the building from the downstream side.

  According to the ninth aspect of the invention, a plurality of the heat collecting ducts 4 are provided in parallel, and the upper end portions of these heat collecting ducts are connected to one heat collecting header 36, and the heat collecting ducts are interposed via the heat collecting header. Since the air conditioner 54 is communicated, a larger volume of hot air can be taken into the building.

  1 to 8 show a heat collection duct and a ventilation system with the heat collection duct according to a first embodiment of the present invention.

  FIG. 1 shows the overall configuration of the present system, in which A is an air-conditioning area, B is the floor of the building, C is the outer wall of the building, and D is the roof of the building.

  This system is composed of a heat collecting section 2 and a ventilation path 50 that also serves as a heat distribution section. A known part of the configuration will be described. In the heat collecting section 2, the heat collecting duct 4 is arranged obliquely on the roof D. The upstream portion (lower end portion) of the heat collecting duct is opened as an outside air inlet 12 as shown in FIG. 2, and the downstream portion (upper end portion) of the heat collecting duct is used as an outlet for warmed air. Are connected to the connecting duct 52. The communication duct is connected to an air conditioner 54 disposed on the outer wall C of the building, and communicates from the air conditioner via an air supply duct 56 to an outlet 58 that opens to the floor B of the building. The positions of the air conditioner 54 and the air outlet 58 can be changed as appropriate. The air conditioner 54 supplies air as conditioned air by heating or humidifying the warm air blown from the heat collecting duct 4 as necessary and purifying it with a dustproof filter or the like.

  In the present invention, as shown in FIG. 2, the heat collecting section 2 includes a plurality of heat collecting ducts 4, a heat collecting header 36, and a drive device 40.

  The heat collecting duct 4 includes a cylindrical outer tube 6 having openings at both ends, a heat collecting plate 8 inserted into the outer tube, a support means 10 for rotatably supporting the heat collecting plate, and the outer tube. The heat insulating part 18 and the heat storage layer 20 are formed on one side. In the present embodiment, the outer cylinder portion excluding the place where the heat insulating portion 18 is installed is the light transmitting portion 22.

  The outer cylinder 6 is formed of a transparent material such as transparent acrylic resin or glass so that the required temperature rise of the air passing through the duct is obtained by solar radiation in winter. Further, the outer cylinder 6 is formed to have such a length and has a rigidity that does not break even if it is installed obliquely. A space surrounded by the outer cylinder 6 forms an air flow path 24. Further, a connection port 26 with a heat collecting header described later is opened on the downstream side of the bottom wall portion of the outer cylinder 6.

  In the present embodiment, the support means 10 is composed of first and second bearings 10a and 10b attached to both openings of the outer cylinder 6, and a rotary shaft 10c installed coaxially between the two bearings. ing.

  The first bearing 10a and the second bearing 10b are formed as frame plates with shaft holes 11 and 11 fitted in both openings of the outer cylinder 6 as shown in FIGS. A bearing 14 for a rotary bearing is attached to the hole edge of the hole. A wide open air introduction port 12 is opened at an appropriate position of the first bearing 10a located on the upstream side, for example, at the upper half and the lower half of the first bearing. However, a pair of upper and lower outside air inlets may be formed in the upper wall portion and the lower wall portion of the outer cylinder 6 described above, for example.

  The rotary shaft 10c is fixed at both ends with small outer diameter portions 13 and these small outer diameter portions are fitted and inserted into the bearing. The rotating shaft 10c is preferably formed of a transparent material like the outer cylinder, and is preferably a hollow cylinder in order to save material. Further, a kerf 15 for joining with a driving device to be described later is formed in the downstream end surface of the rotating shaft 10c.

  The heat collecting plate 8 is in the form of a strip extending over the entire length in the longitudinal direction of the duct, and a semi-cylindrical fitting groove 8a having an upper surface opening is provided in the middle in the width direction. By fitting the rotary shaft 10c into the groove portion, the rotary shaft 10c can be rotated together with the rotary shaft. As shown in FIG. 7A, the heat collecting plate portions 8b, 8b on both sides of the fitting groove portion extend in the horizontal direction along the diameter L of the outer cylinder 6 when viewed from the cylinder axis direction, and The upper surfaces of the fitting groove 8a and the two heat collecting plate portions 8b form a light receiving surface 30, and the lower surfaces of the fitting groove 8a and the two heat collecting plate portions 8b form a radiation surface 32, respectively. The light receiving surface 30 and the radiation surface 32 are preferably formed by applying a black light-absorbing paint to the base metal of the heat collecting plate 8, and the heat collecting plate 8 is made of a metal such as iron having good thermal conductivity. It is good to form with. In the illustrated example, the outer ends of the heat collecting plate portions 8b and 8b are in sliding contact with the inner surface of the outer cylinder 6, and the heat collecting plate 8 communicates the air flow path 24 in the outer cylinder 6 with the light receiving surface 30. Is divided into a first air flow path portion 24a facing the first and a second flow path portion 24b facing the radiation surface 32. However, there may be a gap between the outer end portion of the heat collecting plate portion and the inner surface of the outer cylinder 6, and the first and second air flow path portions 24a and 24b communicate with each other through the gap. Also good.

  The heat insulating portion 18 faces the radiation surface 32 of the heat collecting plate 8 and is formed in a semi-cylindrical shape along the inner surface of the outer cylinder portion between both ends in the width direction of the heat collecting plate as shown in FIG. The inner surface of the heat insulating portion 18 and the radiation surface 32 of the heat collecting plate 8 are formed so as to surround the second air flow path portion 24b. The heat insulating portion 18 is slidably provided on the inner surface of the outer cylinder 6 as the heat collecting plate 8 rotates. In order to maintain the semi-cylindrical shape during the sliding, the heat insulating portion 18 is preferably formed of a heat insulating material having a certain degree of shape retention. Further, the thickness of the heat insulating portion 18 is set to be large enough to prevent heat from escaping from the second flow path portion 24b to the outside.

  The heat storage layer 20 is attached to the inner surface of the heat insulating portion 18. The heat storage layer can be formed of a latent heat storage material.

  The heat collecting header 36 is supported by a support leg (not shown) at a certain distance from the roof D as shown in FIG. A communication tube 38 is erected from the upper surface of the heat collecting header 36.

  As shown in FIG. 4, the drive device 40 is configured as an electric motor 44 protruding from the upper surface of the heat collecting header 36 through a leg plate 42, and the drive shaft of the motor is formed in the groove 15 of the rotary shaft 10c. Connected. The drive device can be controlled by a control device (not shown), and the rotation shaft is preferably rotated every other hour. The electric motor can be rotated by rotational torque corresponding to the current value to be controlled (inversely proportional to the resistance value) by setting the angle (rotation range) as a resistance value.

  As shown in FIG. 1, the heat collecting ducts 4... Are connected to the upper end of the communication tube 38 of the heat collecting header 36 by connecting the connection port 26 of the outer cylinder portion on the downstream side. Install diagonally. It is desirable that the heat collecting ducts 4 be arranged in the north-south direction with the upstream side facing south so that the direction of the heat collecting plate 8 can be adjusted following the sun moving from east to west. Further, in terms of thermal efficiency, the gradient of the heat collecting duct 4 is set so that the sunlight strikes the light receiving surface of the heat collecting plate 8 at right angles during the south and middle according to the solar altitude at the winter solstice of the installation location. Although desirable, it can be appropriately changed depending on the size of the installation location. For example, if the installation location is extremely narrow, it is also possible to fix each of the heat collecting ducts vertically along the south facing portion of the outer wall C of the building with the upstream side down.

  In the above configuration, when the air conditioner 54 is operated from the state of FIG. 1, the outside air flows from the outside air inlet 12 to the air flow path 24 of the heat collecting duct 4 due to the suction force of a blower fan (not shown) of the air conditioner. The air enters the air conditioner 54 through the connection duct 52 of the ventilation path 50, is heated and humidified, and the warm air is blown from the air supply duct 56 into the air-conditioned space A through the outlet 58. Here, when the outside air passes through the heat collecting duct 4, sunlight hits the light receiving surface 30 of the heat collecting plate 8 through the light transmitting portion 22 of the heat collecting duct 4 as shown in FIG. Heat is transmitted mainly into the first air flow path portion 24a by convection, and the heat is conducted from the light receiving surface 30 through the inside of the heat collecting plate 8 to the radiation surface 32, and as the radiant heat, the second flow path portion 24b. It is released inside. Since the temperature of the air passing through each flow path portion is increased by the heat released to both the air flow path portions, the amount of heat heated in the air conditioner 54 is saved, which contributes to energy saving. Further, as shown in FIG. 7B, the heat collecting plate 8 is preferably a light receiving surface so that the effective light receiving area is maximized within the set gradient range of the heat collecting duct 4 as the sun moves. It controls to change the direction in which 30 and sunlight are perpendicular.

  FIG. 8 shows a modification of the supporting means 10 in the illustrated example of FIGS. The support means 10 of this example is formed by a fitting cylinder 10e and a rotating ring 10f.

  The fitting cylinder 10e is fitted on the outer surface of both upstream and downstream ends of the outer cylinder 6 so that it cannot be pulled out, and a slide groove 16 is provided in the middle of the outer surface of the cylinder wall.

  The rotating ring 10f is slidably fitted in the slide groove 16, and the tip end of an L-shaped locking piece 17 projecting from both sides of the rotating ring toward both end surfaces of the heat collecting duct 4 Are fixed to both end surfaces of the heat collecting plate 8 in the longitudinal direction. In this example, it is not necessary to form a groove for fitting the rotating shaft on the heat collecting plate, and the rotating shaft can be omitted, so that the flow passage area in the outer cylinder can be increased. When the heat collecting plate 8 is rotated, the outer surface of the rotating ring may be connected to the driving device. In addition, the gap between the upper surface of the heat collecting plate 8 and the upper half of the outer cylinder cylinder edge on the upstream end surface of the outer cylinder 6 and the gap between the lower surface of the heat collecting plate 8 and the lower half of the outer cylinder cylinder edge are introduced into the outside air. Mouth 12 is formed. Further, these gaps on the downstream end face of the outer cylinder 6 may be closed with a closing plate or the like.

  9 to 10 show a heat collection duct according to the second embodiment of the present invention, and the heat collection duct is formed by forming the outer cylinder 6 into a square cylinder shape. Hereinafter, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the illustrated example of FIG. 9, the outer cylinder 6 itself is composed of a flat plate-shaped light transmitting portion 22 and a heat insulating portion 18 formed as a flange member having a concave cross section. The translucent part 22 can be detachably provided on the upper surface of the heat insulating part 18. The translucent part 22 can be formed of a transparent acrylic resin or glass as in the first embodiment, and the heat insulating part 18 can be formed of a gabanium steel plate or the like. In the illustrated example, the outer cylinder 6 is divided into a plurality of outer cylinder portions in the longitudinal direction. A heat storage layer 20 is laid on the upper surface of the bottom wall portion of the heat insulating portion 18. The heat storage layer does not necessarily have shape retention.

  Further, a horizontal plate-shaped heat collecting plate 8 is placed on the upper surface of the bottom wall of the heat insulating portion 18 of the outer cylinder 6. A spacer 9 is inserted between the lower surface of the heat collecting plate and the upper surface of the bottom wall of the heat insulating portion to provide a space for forming the second air flow path portion 24b. Further, a first flow path portion 24a is formed between the upper surface of the heat collecting plate 8 and the lower surface of the light transmitting portion 22, and the first and second air flow path portions are in communication with each other. The heat collecting plate 8 can be formed of a metal plate such as a steel plate, for example, and the surface is preferably black galvanized.

  The heat collection duct of the present embodiment is preferably provided in the east-west direction corresponding to the movement of the sun of the day. In this case, the heat collecting duct may be installed on the roof D with no gradient as shown.

  FIG. 10 shows a modification of FIG. 9 in which the plate-like heat collecting plate 8 is provided with vertical plate portions 8d and 8d erected from both ends in the width direction of the horizontal plate portion 8c. The plate 8 is formed in a U-shaped cross section. The upper end of the vertical plate portion of the heat collecting plate is in contact with the lower surface of the light transmitting portion 22, and the first air flow path portion 24a is formed between the lower surface of the light transmitting portion and the inner surface of the heat collecting plate 8, and the lower surface of the light transmitting portion. The outer surface of the heat collecting plate 8 and the inner surface of the heat insulating portion 18 form a second air flow path portion 24b.

It is a conceptual diagram of the ventilation system which uses the heat collection duct which concerns on the 1st Embodiment of this invention, and this heat collection duct. It is a perspective view which shows the structure of the heat collecting part of the FIG. 1 system. It is an expansion perspective view of the upstream edge part of the duct of FIG. It is an expansion perspective view of the downstream end part of the duct of FIG. It is an expanded sectional view of the duct end part of FIG. It is a perspective view which cut | disconnects and shows the middle part of the duct of FIG. It is sectional drawing which shows the effect | action of the duct of FIG. It is an expansion perspective view which shows the modification of the duct edge part of FIG. It is a perspective view of the heat collection duct which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the modification of the duct of FIG.

Explanation of symbols

A ... Air-conditioned space B ... Building floor, C ... Building outer wall, D ... Building rooftop L ... Duct diameter 2 ... Heat collecting part 4 ... Heat collecting duct 6 ... Outer cylinder 6a ... Outer cylinder part 8 ... Heat collecting plate 8a ... Fitting groove 8b ... Heat collecting plate 8c ... Horizontal plate
8d ... Vertical plate part 9 ... Spacer
10 ... support means 10a ... first bearing 10b ... second bearing 10c ... rotary shaft
10e ... Fitting cylinder 10f ... Rotating ring
11 ... Shaft hole 12 ... Outside air inlet 13 ... Rotary shaft small outer diameter 14 ... Bearing
15 ... Groove 16 ... Slide groove 17 ... Locking claw 18 ... Heat insulation 20 ... Heat storage layer
22 ... Translucent part 24 ... Air channel 24a ... First air channel part 24b ... Second air channel part
26 ... Connection port 30 ... Light receiving surface 32 ... Radiation surface
36 ... Heat collecting header 38 ... Communication tube 40 ... Drive device 42 ... Leg plate 44 ... Electric motor
50 ... Ventilation channel 52 ... Connecting duct 54 ... Air conditioner 56 ... Air supply duct 58 ... Blow-off port

Claims (9)

  At least one half side part of the outer cylinder 6 for forming the air flow path 24 is used as the light transmitting part 22, the heat insulating part 18 is formed on the other half side part, and the light transmitting part 22 is formed in the air flow path 24. A heat collecting duct, wherein a heat collecting plate 8 having a light receiving surface 30 facing each other is installed.   The heat collecting plate 8 is provided with a first air flow path portion 24a interposed between the light transmitting portion 22 and a second air flow path portion 24b interposed between the heat insulating portion 18 and the heat insulating portion 18, respectively. The heat collecting duct according to claim 1. .
The heat collecting duct according to claim 1 or 2, wherein a heat storage layer (20) is formed between the second air flow path portion (24b) and the heat insulating portion (18).   3. A support means 10 for supporting a heat collecting plate 8 is provided in an outer cylinder 6 formed in a cylindrical shape so as to be rotatable around its cylinder axis. 3. The heat collecting duct according to 3.   The support means 10 is formed by installing a translucent rotating shaft 10c between bearings 10a, 10b attached to both end portions of the outer cylinder 6, and the heat collecting plate 8 is arranged in the width direction. 5. The heat collecting duct according to claim 4, wherein the heat collecting duct is provided as a band plate shape having a fitting groove portion 8a at an intermediate portion so as to be rotatable by fitting the rotary shaft 10c into the fitting groove portion 8a. .   The heat collecting duct according to claim 4 or 5, wherein the heat collecting plate (8) is formed to be rotatable around a rotating shaft (10c) by a driving device (40) using sunlight as an energy source.   The outer cylinder 6 is formed in a rectangular cylinder shape, and the upper side wall portion corresponding to one side of the rectangle is the translucent portion 22, and the three-side side wall portion corresponding to the other three sides is a concave heat insulating portion. 18 and the heat collecting plate is supported at least with the bottom wall portion of the concave heat insulating portion 18 with the second air flow path portion 24b formed. The heat collecting duct according to any one of claims 2 and 3, further comprising a portion 8c.   The heat collection duct 4 according to any one of claims 1 to 7 is disposed obliquely with the upstream portion thereof downward and the downstream portion of the heat collection duct 4 on the rooftop or other outdoor space of the building. A ventilation system using a heat collecting duct, characterized in that the air-conditioner 54 is connected to the air-conditioned space A in the building.   A plurality of the heat collecting ducts 4 are provided in parallel, and the upper ends of these heat collecting ducts are connected to a single heat collecting header 36 and communicated to the air conditioner 54 through the heat collecting header. A ventilation system using the heat collecting duct according to claim 8.

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