JP2008138898A - Heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently get heat for heating from a heat medium heated by a solar heat collector. <P>SOLUTION: As this heating device comprises the collector 1 for collecting solar heat, a pump 3 for circulating the heat medium 5 heated by the heat collector 1, a circuit 6 for circulating the heat medium 5 by the pump 3, a heat exchanger 4 disposed on the way of the circuit 6, and a radiator 2 incorporating the heat exchanger 4, the heat medium 5 heated by the heat collector 1 is directly distributed to the heat exchanger 4 through the circuit 6, and the heat can be used for heating as it is through the radiator 2, thus radiation loss by indirect heating can be reduced, and the heat of high temperature collected by the heat collector 1 can be efficiently used in the heating device 42. Further, as the heat medium 5 of high temperature heated by the heat collector 1 is circulated in the circuit 6, the heat collector 1, the circuit 6 and the heat exchanger 4 can be compactly constituted, and it can be easily installed as a roof material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heating device using solar heat.

  Conventionally, this type of heating device includes a solar heat collector, a heat storage layer that stores hot water used for heating, and a hot water storage tank that stores hot water used for hot water supply. The heated heat medium is exchanged with water by a heat exchanger built in the heat storage tank. A cooling / heating facility is connected to the heat storage tank via a heat pump or not, and the heat of the heat medium indirectly heated by the solar heat collector is used for the heating facility (see, for example, Patent Document 1). .

In addition, the solar heat collecting panel and air space (air passage) are unitized and attached to the outer wall of the building, and the warm air in the air space is sucked by a fan installed in the room so that it is heated by solar heat in winter. (For example, refer to Patent Document 2).
JP-A-7-190502 Japanese Patent Laid-Open No. 2000-241031

  However, in the above prior art, the heat medium heated by the solar heat collector is heat-exchanged with the water in the heat storage tank, and the stored hot water is used for the heating equipment. There was a problem that thermal efficiency was not improved.

  This invention solves the said conventional subject, and it aims at taking out the heat for heating efficiently from the heat medium heated with the solar collector.

  In order to solve the above-described conventional problems, a heating device of the present invention includes a heat collector that collects solar heat, a pump that circulates a heat medium heated by the heat collector through a circuit, and the circuit. And a radiator that dissipates the heat exchanged by the heat exchanger.

  As a result, the heat medium heated by the heat collector is directly sent to the heat exchanger through the circuit, and the heat is used as it is for heating. Therefore, heat loss due to indirect heating is reduced, and the high temperature collected by the heat collector is reduced. Heat is efficiently used for heating.

  In addition, since a high-temperature heat medium heated by the heat collector is circulated in the circuit, the heat collector, the circuit, and the heat exchanger can be configured in a compact manner, and can be easily installed as a roofing material.

  The heating device of the present invention efficiently takes out heat for heating from a heat medium heated by a solar collector, and can be installed as a roofing material without impairing the beauty.

A first invention is a heat collector that collects solar heat, a pump that circulates a heat medium heated by the heat collector through a circuit, and a heat exchanger that is provided in the middle of the circuit to exchange heat. Since the heat medium heated by the heat collector is directly sent to the heat exchanger via the circuit and the heat is directly used for heating via the radiator, Heat dissipation loss due to heating can be reduced, and high-temperature heat collected by the heat collector can be efficiently used in the heating device.

  In addition, since the high-temperature heat medium heated by the heat collector is circulated in the circuit, the heat collector, the circuit, and the heat exchanger can be configured compactly, and can be easily installed as a roofing material.

  In the second invention, in particular, the heat exchanger of the first invention is provided with a heating device for heating the heat medium on the upstream side of the circuit, so that the heating capacity of the heat collector decreases due to the weather. However, since it can heat with a heating device, the amount of heat required for a heating device can be secured.

  In the third aspect of the invention, in particular, the heating device of the second aspect of the invention controls the temperature of the heat medium to be heated to a temperature required for the heating device by a controller that receives a signal from the heat medium temperature detection unit. Thus, a heating medium having a constant temperature is sent to the heating device, so that a stable heating temperature can be obtained and energy saving of the heating device can be achieved.

  According to the fourth aspect of the invention, in particular, the heat exchanger of the first aspect of the invention is arranged in the panel portion for circulating the second heat medium in order to heat the second heat medium for heating. Since the heat medium circulating in the heat collector and the second heat medium for heating are operated independently, even if the heating state in the heat collector fluctuates, the panel part will act as a buffer and stable heating The temperature can be obtained.

  In the fifth aspect of the invention, in particular, the controller of the third aspect of the invention starts the operation of the heating device by receiving the signal of the solar radiation temperature detector provided in the heat collector and determining the operation start time of the heating device. Therefore, the usability of the heating device can be improved by making it possible to use high-temperature heat.

  In the sixth aspect of the invention, in particular, the controller of the fifth aspect of the invention operates the pump when the detection temperature of the heat medium temperature detection unit is lower than the indoor temperature detection unit to circulate the heat medium in the circuit. Radiation cooling of the atmosphere is used in the early morning of summer to promote heat dissipation from the heat collector, and the indoor air is cooled by the radiator. Usability can be improved by using it as a cold radiator.

  In the seventh invention, in particular, the heat exchanger of the first invention is provided with a heat storage tank for a heat medium heated by the heat collector on the upstream side of the circuit, so that the heating state in the heat collector fluctuates. Even if it performs, a heat storage tank can play the effect of a buffer and can obtain the stable heating temperature.

(Embodiment 1)
1, 2, and 3, reference numeral 1 denotes a heat collector that collects solar heat, and is installed on the roof or roof of a building. A heat radiator 2 supplies the heat collected by the heat collector 1 into the room. The radiator 2 includes a pump 3 and a heat exchanger 4, and the heat medium 5 is circulated between the heat collector 1 and the heat exchanger 4 via the circuit 6 by the pump 3 to perform heat exchange. I have to.

  The heat collector 1 has a plurality of reflecting mirrors 7 that collect solar heat, and these reflecting mirrors 7 are arranged in parallel in the north-south direction.

  Each reflecting surface 8 of the reflecting mirror 7 is finished to be a mirror surface in order to improve the reflectance of sunlight. For the mirror finish, there are methods such as plating, vapor deposition, polishing, and painting depending on the material constituting the reflecting mirror 7. Processing of the reflecting mirror 7 includes methods such as molding of heat-resistant resin (for example, phenol resin, fluororesin, polyimide resin, etc.), stainless press processing, aluminum die casting, and the like.

  There is also a method of bending an aluminum mirror finish plate. For example, when the reflecting mirror 7 is molded from a heat-resistant resin, the mirror surface is finished by aluminum plating (evaporation) or painting to form the reflecting surface 8.

  In particular, when the mirror surface is plated with aluminum, polyimide resin, polyphenylene sulfide resin, polyester resin, polyamide resin, or the like is used.

  When stainless steel is pressed, a mirror surface may be formed by aluminum electrolytic polishing or buffing. In addition, the aluminum die casting may be mirror-finished by plating or the like to prevent a reduction in reflectance due to an oxide film after polishing of the aluminum die casting material.

  The heat collecting portions 9 respectively disposed at the focal points 10 of the paraboloid of the reflecting mirror 7 are constituted by tubes (copper tube, stainless steel tube, brass tube, aluminum tube, etc.).

  Since the parabolic reflecting mirror 7 focuses only in one direction of sunlight, in order to concentrate the sunlight on the heat collecting section 9, the reflecting mirror 7 is irradiated with vertical sunlight, or It is necessary to apply sunlight at an appropriate angle parallel to the azimuth direction, reflect the sunlight on the reflecting surface 8, and bounce and collect light at the same angle on the heat collecting section 9 on the opposite side.

  In order to match the characteristics of the parabolic reflecting mirror 7, an actuating section 12 that rotates the plurality of reflecting mirrors 7 integrally at the same angle by the driving section 11 is provided.

  The drive unit 11 rotates a drive unit operation plate 13 mounted on a shaft by combining a motor such as a stepping motor, a gear, and a cam, and pivotally supports a rod-like operation unit 12 via a pin 14 on the drive unit operation plate 13. is doing.

  And, the other end of the reflecting mirror operating plate 15 having one end fixed to each reflecting mirror 7 is pivotally supported by the pin 16 on the operating portion 12, and therefore each reflecting mirror 7 is synchronized with the heat collecting portion 9 as an axis. And be rotated.

  The reflector operating plate 15 is fixed to either one of the end faces 17 attached to both ends of the reflector 7 (the end faces 17 at both ends are also possible). The end face 17 is subjected to the same material and surface treatment as the reflecting mirror 7.

  The end face 17 is provided with an opening 18 and a heat collecting portion 9 is inserted therein. A cylindrical bearing portion 19 is provided by extending the opening 18 of the end surface 17 so as not to contact the heat collecting portion 9, and a rotary bearing 20 is provided around the cylindrical bearing portion 19.

  The rotary bearing 20 uses a bearing bearing or a non-contact fluid bearing. One of the rotation bearings 20 is fixed to the rotation support portion 21, and thus the reflecting mirror 7 is provided in an independent configuration so as not to contact the heat collecting portion 9.

  A selective absorption film is formed on the surface of the heat collecting section 9 (not shown).

  The selective absorption film is plated with black black chrome or electroless nickel on the surface of the heat collecting section 9. In addition, manganese-based black paint may be applied instead of plating. The heat collecting unit 9 is configured to have a small tube outer diameter so that the flow of the heat medium 5 does not become a resistance, so that a large amount of sunlight can be concentrated on the heat collecting unit 9. The smaller the outer diameter of the tube, the higher the condensing ratio (the value obtained by dividing the focal area by the incident area of sunlight, in the vertical type, the value obtained by dividing the outer diameter of the focal tube by the aperture width of the reflector) and the heat collecting part 9 is set to a high temperature.

A tracking controller 22 controls the operation of the drive unit 11 and operates according to the season and the daily solar altitude based on the annual movement of the sun stored in a microcomputer or the like, and rotates a plurality of reflecting mirrors 7. , I try to adjust to the altitude where the solar radiation of the day of the day is maximized.

  Thereby, the sunlight reflected by the reflecting mirror 7 is concentrated with the heat collecting part 9 as a focal point, and the temperature of the heat collecting part 9 is raised to a high temperature.

  Reference numeral 23 denotes a box-shaped exterior housing a plurality of reflecting mirrors 7, a heat collecting unit 9, an operating unit 12, and a driving unit 11, and the upper opening is closed by a transmission body 24. The exterior 23 is made of stainless steel with little corrosion or a weather resistant resin material (for example, polyester resin, polycarbonate resin, etc.).

  The exterior 23 is filled with a heat insulating material 25. The heat insulating material 25 is made of heat-resistant rock wool, glass wool or the like. The surface of the heat insulating material 25 is hardened to form a wall surface by itself or to reinforce the inner surface with a plate.

  The heat collecting section 9 is arranged as if it penetrates the exterior 23, one of which is a heat collecting inlet section 26 and the other is a heat collecting outlet section 27, and the heat collecting inlet section 26 and the heat collecting outlet section 27 are one. To form a circuit 6.

  The transmissive body 24 is provided on the upper part of the plurality of reflecting mirrors 7 to take in sunlight and prevent rain and dust from entering the inside of the reflecting mirror 7. The transparent body 24 uses transparent glass having a high transmittance in order to allow sunlight to pass through (the solar transmittance of such a transparent glass is about 90%). The exterior heat insulating material 25 is inclined toward the transmission body 24 so as to spread upward, so that a large amount of sunlight can be received by the reflecting mirror according to the altitude of the sun.

  The radiator 2 outputs the solar heat collected by the heat collector 1 into the room, and has the same function as a commercially available radiant oil heater, and includes a panel portion 29 constituted by a plurality of radiation tubes 28. Yes.

  The shape of the radiation tube 28 has a plate-like heat exchanger configuration in order to promote heat exchange with indoor air by natural convection and radiation. The radiant tube 28 is made of a material such as iron, stainless steel, or aluminum, and may have a fin shape, a coil shape, a multi-tube shape, or the like.

  The panel portion 29 is formed in a hermetically sealed structure, and stores a second heat medium 30 so that a circulating flow by convection is generated inside and heat can be transferred to the inside of the radiation tube 28.

  The second heat medium 30 uses a mineral-based lubricating oil such as silicone oil having low volatility and high heat resistance.

  The same mineral-based lubricating oil can be used for the heat medium 5 circulating in the heat collector 1, but it is also possible to use alternative chlorofluorocarbon (HFC) 134A or carbon dioxide (CO 2).

  The inner surfaces of the radiation tube 28 and the panel portion 29 are coated (resin film, enamel, etc.) to prevent corrosion.

  The heat exchanger 4 is disposed at the bottom 31 inside the panel portion 29, and the outgoing pipe 32 and the return pipe 33 of the circuit 6 are coupled to the heat exchanger 4.

  Since the heat exchanger 4, the going pipe 32, and the return pipe 33 are independent from the inside of the panel portion 29, the heat medium 5 and the second heat medium 30 do not contact each other.

  Since the heat exchanger 4, the going pipe 32, and the return pipe 33 have a sealed structure such as brazing or caulking with a sealing material filled, the heat medium 5 and the second heat medium 30 are outside the panel portion 29. Will not leak.

  The radiator 2 is configured in a box shape by the radiator outer casing 34, and the plurality of radiation tubes 28 are exposed outward from the radiator outer casing 34 so as to be easily in contact with indoor air. A pump 3 that circulates the heat medium 5 is arranged in the return pipe 33 of the heat exchanger 4 in the radiator exterior 34 so that the heat medium 5 after heat exchange is sucked.

  The pump 3 is a positive displacement pump (for example, a piston pump, a plunger pump, a gear pump, an eccentric pump, etc.).

  The outgoing pipe 32 and the return pipe 33 of the circuit 6 are configured by piping of heat resistant resin (for example, fluorine resin) or metal (for example, copper, stainless steel, etc.), and the periphery thereof is a heat resistant heat insulating material (for example, glass wool). , Ceramics such as alumina and silica, rock wool, etc.) to prevent heat radiation from the circuit 6.

  The return pipe 33 is connected to the heat collection inlet 26 of the heat collector 1, and the outgoing pipe 32 is connected to the heat collection outlet 27 of the heat collector 1, so that the heat collector 1 and the heat exchanger 4 are sealed together. It is configured as a circuit.

  The heat exchanger 4 is made of copper or aluminum material, has a large number of fins around the tube, and exchanges heat of the heat medium 5 flowing in the tube with the second heat medium 30 in the panel portion 29. Yes. The shape of the heat exchanger 4 can be configured to connect multiple tubes or a plurality of plates.

  A heating device 35 is provided in the middle of the outgoing pipe 32 upstream of the heat exchanger 4 in the radiator exterior 34 and is used for reheating the heat medium 5 supplied from the heat collector 1.

  The heating device 35 heats a part of the going pipe 32 with an electric heater (for example, a sheathed heater, a ribbon heater, a band heater, etc.). The periphery of the heating device 35 is covered with a heat-resistant heat insulating material (for example, ceramic or rock wool such as glass wool, alumina or silica) to prevent heat dissipation.

  Further, the heating device 35 can also be provided with a dedicated heating unit in the middle of the outgoing pipe 32 or inside the panel unit 29 by casting a sheathed heater into aluminum or brass.

  Reference numeral 36 denotes a controller that changes the output of the heating device 35 in response to a signal from the heat medium temperature detection unit 37 provided in a part of the heating device 35, a part of the heat exchanger 4, or a part of the outgoing pipe 32. The temperature of the heat medium 5 supplied to the heat exchanger 4 is heated to a temperature required for the radiator 2. Although the output adjustment of the heating device 35 is performed by turning on and off the rated power, it is also possible to adjust the temperature by varying the power while detecting the temperature of the heating device 35.

  The heat medium temperature detection unit 37 is composed of a thermocouple or a thermistor, and directly measures the temperature of the heat medium 5 or indirectly measures the surface of the going pipe 32 to determine the temperature of the heat medium 5. .

  In addition, the control unit 36 controls the pump 3 and gives instructions to the tracking controller 22.

Reference numeral 38 denotes a solar radiation temperature detector provided in a part of the heat collector 1. The controller 36 receiving the signal of the solar radiation temperature detector 38 grasps the temperature rise state of the heat collector 1 and starts operation. Thus, heat that contributes to heating can be supplied from the radiator 2 in a short time from the start of operation. The solar radiation temperature detector 38 is composed of a thermocouple or a thermistor, and directly measures the temperature of the heat medium 5 in the heat collector 1 or indirectly measures a surface of a part of the heat collector 9 to obtain a heat medium. The temperature of 5 is judged.

  Reference numeral 39 denotes an indoor temperature detector provided in a part of the radiator exterior 34. Upon receipt of a signal from the indoor temperature detector 39, the controller 36 grasps the indoor heating state and keeps the indoor temperature constant. The operation of 3 is controlled.

  The controller 36 basically stops the operation of the pump 3 when the heating is sufficient, but when the solar radiation is strong and the temperature of the heat collector 1 rises due to the weather of the day, the signal of the solar radiation temperature detector 38 is sent. In response to this, an operation of circulating the pump 3 while reducing the flow rate of the pump 3 is performed so that the temperature of the heat medium 5 of the heat collector 1 does not rise excessively.

  The indoor temperature detector 39 is composed of a thermocouple or a thermistor, and directly measures the indoor air temperature.

  Reference numeral 40 denotes an operation instruction unit provided in a part of the radiator exterior 34, and the operation instruction unit 40 can select a heating capacity from the radiator 2. The operation instruction unit 40 is provided with a display unit 41 for displaying data from the indoor temperature detection unit 39 (room temperature display) and data from the solar radiation temperature detection unit 38 (temperature state display of the heat collector 1). Yes.

  Moreover, it is also possible to display how much of the amount of heat used during heating operation is covered by solar heat by a microcomputer or the like mounted on the controller 36.

  Further, the control unit 36 can cover and notify the standby state until the actual operation start when the operation instruction is issued from the operation instruction unit 40 from the signal of the solar radiation temperature detection unit 38.

  The controller 36 receives signals from the indoor temperature detection unit 39 and the solar radiation temperature detection unit 38, and when the temperature of the heat medium 5 of the heat collector 1 is lower than the indoor temperature, the display unit 41 indicates that the cold radiation operation can be performed. It is trying to display.

  The cold radiation operation radiates heat from the heat collector 1 to the atmosphere by operating the pump 3 to circulate the heat medium 5 in the circuit 6 in order to use the radiant cooling of the atmosphere at dawn especially from midnight in summer. Like to do. As a result, the indoor temperature is lowered.

  The operation instruction unit 40 is provided with a switch for switching between a heating operation in winter and a cold radiation operation in summer (not shown). It is also possible to forcibly form a flow of air blown or sucked into the radiator 2 by using a blower to promote heat exchange with the room air of the radiator 2.

  Reference numeral 42 denotes a heating device (system), which includes a heat collector 1 that collects solar heat, a radiator 2 that releases the heat indoors, and a circuit 6 that circulates the heat medium 5.

  About the heat collector comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, in the winter season, when the heating device 42 is operated, when the heating capacity is selected from the operation instruction unit 40 and the operation switch is turned on, the control unit 36 evaluates the signal of the solar radiation temperature detection unit 38 of the heat collector 1. The temperature of the heat medium 5 in the heat collector 1 is supplied to the radiator 2 to determine whether it can be used as radiant heating.

  When the amount of solar radiation increases and the temperature of the heat medium 5 rises to a temperature that can be used for radiant heating (for example, about 80 ° C.), the controller 36 operates the pump 3 to circulate the heat medium 5 in the circuit 6. Let

  At this time, when the operation start time is shortened, the heating device 35 is operated to raise the temperature of the heat medium 5 and used for heating, or for the warming operation of the entire heating device 42 such as the heat exchanger 4 and the circuit 6. I am trying to use it.

  When the controller 36 is in the weather of the day, for example, it is cloudy, the heating device 35 reheats the heat medium 5 to a temperature at which it can be used as radiant heating, and thus fluctuates. Easily stabilize the heating performance of solar heat.

  Further, even when solar heat is sufficiently collected, the heating device 35 is operated in the high power mode of the radiator 2 so as to improve the lack of capacity of the electric heating device.

  The controller 36 receives the signal from the heat medium temperature detection unit 37 and varies the heating capacity of the heating device 35 so as to heat the temperature of the heat medium 5 to the heating temperature.

  The heat medium 5 exchanges heat with the second heat medium 30 in the panel section 29 by the heat exchanger 4, and the temperature of the second heat medium 30 rises, and the plurality of radiant tubes 28 of the radiator 2 are passed through the room. Is used for heating.

  Thereafter, the controller 36 keeps the instructed operating state (for example, room temperature) while keeping the temperature of the heat medium 5 stable while monitoring the temperature of the indoor temperature detector 39.

  In the heat collector 1, the tracking controller 22 rotates the drive unit 11 and moves the operating unit 12 in accordance with the solar altitude data of the day stored in the microcomputer or the like, and the reflecting mirror around the heat collection unit 9. 7 is rotated so that the sunlight hits the reflecting mirror 7 vertically.

  For example, if the sun is in the south, the sunlight hits the reflecting surface 2 of the reflecting mirror 7 at a right angle from any direction with respect to altitude and direction, and concentrates the sunlight on the heat collecting unit 9, so that the temperature of the heat collecting unit 9 To raise.

  As shown in FIGS. 3A and 3B, even if the incident direction of sunlight is different due to different solar altitudes, the reflecting mirror 7 is rotated so that sunlight is vertically applied to the reflecting mirror 7.

  About 90% of sunlight is absorbed by the heat collecting unit 9 by the selective absorption film mounted on the surface of the heat collecting unit 9, and the temperature of the heat collecting unit 9 rises.

  When the heat medium 5 is sent to the heat collecting unit 9, the heat medium 5 receives heat from the heat collecting unit 9 and forms a high-temperature liquid or vapor (or a liquid or a mixture of vapor and liquid) to exchange heat. Sent to vessel 4.

  At this time, the controller 36 moves the reflector 7 at any time according to the altitude of the sun, so that the sunlight is always directed to the heat collector 9 with respect to the reflector 7 even if the direction of the sun changes from the south. The drive unit 11 is controlled so as to follow the focal point.

  Further, in the summer, the controller 36 receives signals from the indoor temperature detection unit 39 and the solar radiation temperature detection unit 38, and if the temperature of the heat medium 5 of the heat collector 1 is lower than the indoor temperature, it can perform a cold radiation operation. The display unit 41 is displayed so that the cold radiation operation can be performed.

  The user gives an instruction from the operation instruction unit 40 via a switch for cold radiation operation. As a result, the operation in summer is possible until the temperature of the solar radiation temperature detection unit 38 rises above the room temperature and the cold radiation operation cannot be performed.

  As described above, in the present embodiment, the heat collector 1 that collects sunlight, the pump 3 that circulates the heat medium 5 that is heated by the heat collector 1, and the heat medium 5 that is circulated by the pump 3. Circuit 6, a heat exchanger 4 provided in the middle of the circuit 6, and a radiator 2 incorporating the heat exchanger 4, the heat medium 5 heated by the heat collector 1 is passed through the circuit 6. The heat can be directly sent to the heat exchanger 4, and the heat can be used as it is for heating via the radiator 2, reducing the heat radiation loss due to indirect heating, and the high-temperature heat collected by the heat collector 1 is efficiently supplied to the heating device 42. Can also be used.

  Moreover, since the high-temperature heat medium 5 heated by the heat collector 1 is circulated in the circuit 6, the heat collector 1, the circuit 6, and the heat exchanger 4 can be configured in a compact manner, and can be easily installed as a roofing material. Can do.

  Further, in the heat exchanger 4 of the present embodiment, the heating device 35 is provided on the upstream side of the circuit 6 to heat the heat medium 5, so that the heating capacity of the heat collector 1 is reduced due to the weather. Moreover, since it can heat with the heating apparatus 35, the calorie | heat amount required for the heating apparatus 42 can be ensured.

  Further, the heating device 35 controls the heating device 42 so that the temperature of the heat medium 5 is heated to a temperature required for the heating device 42 by the controller 36 that has received a signal from the heat medium temperature detection unit 37. The heat medium 5 having a constant temperature is sent to obtain a stable heating temperature and to save energy of the heating device 35.

  In addition, the heat exchanger 4 of the present embodiment is arranged in the panel portion 29 for the second heat medium 30 in order to heat the second heat medium 30 for heating. Since the heating medium 5 and the second heating medium 30 for heating are operated independently of each other, the panel section 29 for the second heating medium 30 can be operated even if the heating state in the heat collector 1 fluctuates. The buffer effect is achieved, and a stable heating temperature can be obtained.

  Moreover, the controller 36 of this Embodiment receives the signal of the solar radiation temperature detection part 38 provided in the heat collector 1, and determines the driving | operation start time of the heating apparatus 42 from the operation start of the heating apparatus 42. Usability of the heating device 42 can be improved by making it possible to use high-temperature heat.

  Further, the controller 36 according to the present embodiment operates the pump when the detected temperature of the heat medium temperature detecting unit 37 is lower than the indoor temperature detecting unit 39 to circulate the heat medium 5 in the circuit 6. In the early morning of the air, the air radiant cooling is used to promote heat radiation from the heat collector 1, and the indoor air is cooled by the heat radiator 1. Usability can be improved by using it as a cold radiator.

  Moreover, since the heating apparatus 35 of this Embodiment can heat the heat medium 5 in addition to solar heat, it can obtain high power rather than the output (about 1.2 kW at the maximum) of a commercially available electric heater, and is convenient. Can be improved.

  In addition, the tracking control unit 22 according to the present embodiment operates the driving unit 11 and moves the operating unit 12 in accordance with the season and the solar altitude of the day based on the annual movement of the sun, and a plurality of reflecting mirrors. 7 is rotated so that the solar radiation at that time of the day reaches the maximum altitude, so that the sunlight reflected by the reflecting mirror 7 is concentrated with the heat collecting part 9 as the focal point. The temperature of the heat collecting unit 9 can be raised to a high temperature, and the high temperature heat can be transmitted to the heat medium 5 using a lot of time during the long period of the year.

  Moreover, in this Embodiment, since the reflective mirror 7 was comprised with the rectangular mirror, sunlight can be concentrated on the focal point of a rectangular mirror and the required calorie | heat amount and temperature are obtained from sunlight with a low energy density. be able to.

  Further, in the present embodiment, the heat collecting unit 9 is arranged at the focal point of the reflecting mirror 7 constituted by a rectangular mirror, thereby raising the temperature of the heat collecting unit 8 to a high temperature, Heat can be transferred efficiently.

  Further, the transmissive body 24 of the present embodiment is made of a resin material (for example, polycarbonate, etc.) having selective permeation performance and excellent heat resistance and weather resistance, thereby reducing the weight and cost of the heat collector 1. It can be performed.

  In addition, the reflecting mirror 7 of the present embodiment uses a reflecting mirror of a compound parabolic concentrator (CPC) so that a predetermined inclination angle of sunlight (for example, sunlight can be incident). If the angle is about 30 ° from the zenith, the light condensing ratio is about 3 times, and if the incident angle is narrowed to about 20 °, the light condensing ratio expands to about 7 times. Since it is more focused, the amount of heat irradiated at the heat collection aperture increases and the temperature rises.

  However, when the condensing ratio is increased, the angle at which sunlight can be incident becomes narrower with respect to the zenith. Therefore, there are many restrictions on the condensing time at the condensing unit 9 and the installation location, which needs to be considered. ), It is possible to concentrate on the heat collecting part 9, so that the range in which the reflecting mirror 1 is rotated with respect to the altitude of the sun is reduced or does not need to be rotated. Costs can be reduced by simplifying control.

  In addition, the exterior 23 according to the present embodiment is filled with a gas having a low thermal conductivity (for example, krypton gas) and sealed, so that air in the space for the movable part of the reflector 1 within the exterior 23 is sealed. Therefore, it is possible to reduce the heat radiation from the exterior 23 and improve the heat collection efficiency.

  Moreover, by filling the inert gas, it is possible to cover the high-temperature heat collecting part 9 to improve safety, prevent the exterior heat insulating material 25 from deteriorating, and endure long-term use.

  In addition, the heat collector 1 of the present embodiment fixes the altitude direction of the sun (the alignment of the plurality of reflecting mirrors 1 is aligned with the north-south direction, for example, the inclination angle of the installation base is south-central during spring equinox and autumn equinox. The sun light vertically hits the reflector 1) and rotates a plurality of reflectors 1 with respect to the movement of the sun's azimuth. It is also possible to concentrate sunlight on the heat collecting unit 9.

(Embodiment 2)
FIG. 4 shows the second embodiment, and the same reference numerals are given to the parts having the same functions as those in FIG.

  In FIG. 4, the heat storage tank 43 is provided in the middle of the outgoing pipe 32 which goes to the heat exchanger 4 arrange | positioned at the bottom part 31 inside the panel part 29 of the heat radiator 2. In FIG.

The heat storage tank 43 operates the three-way valve 44 provided in the middle of the heat exchanger 4 and the heat storage tank 43 when the heating device 42 is not operated, and does not direct the heat medium 5 to the heat exchanger 4 via the branch pipe 45. A circuit that circulates the heat collector 1, the circuit 6, and the heat storage tank 43 by the pump 3 is configured so as to return to the return pipe 33, and the high-temperature heat medium 5 is stored in the heat storage tank 43.

  When the heating device 42 is operated, the three-way valve 44 is returned again so that the heat medium 5 moves from the heat storage tank 43 to the heat exchanger 4 to reduce the operation of the heating device 35 at the start of operation.

  About the heat exchanger comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Even when the low-temperature heat medium 5 in the circuit 6 is supplied when the heating device 42 is operated, the high-temperature heat medium 5 stored in advance in the heat storage tank 43 is supplied, and the temperature of the heat exchanger 4 is increased. The inflow of the low heat medium 5 is prevented, and the capacity reduction from the radiator 2 is reduced.

  When the weather is good and the heating device 42 is not used, the heat collector 5 is circulated by the heat collector 1 so that the high-temperature heat medium 5 is stored in the heat storage tank 43 to recover heat.

  As described above, in the present embodiment, since the heat storage tank 43 is provided in the middle of the outgoing pipe 32 toward the heat exchanger 4, the waiting time for the temperature rise at the start of operation of the heating device 42 is shortened. In addition, it is possible to improve usability by covering the decline in heating capacity.

  Further, when the heating device 42 is not used, the heat collector 1 collects the heat storage tank 43 and the heat medium 5 heated to a high temperature is stored. Therefore, it is possible to suppress the use of the heating device 35 and to save energy.

  Moreover, since the structure which stores heat in the thermal storage tank 43 at the time of fine weather was provided, the efficiency of collection | recovery of unstable and thin solar energy can be improved.

  As described above, the heating device according to the present invention can be used by heating the heat medium by recovering heat from sunlight with low energy density and efficiently exchanging heat, and thus is applied to floor heating and dryers. be able to.

The block diagram of the heating apparatus in Embodiment 1 of this invention Sectional drawing of the principal part of the heat collector in the same Embodiment 1. Sectional drawing of the principal part of the solar tracking device of the heat collector in Embodiment 1 Sectional drawing of the principal part of the other heating apparatus in Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat collector 2 Radiator 3 Pump 4 Heat exchanger 5 Heat medium 6 Circuit 29 Panel part 35 Heating apparatus 36 Controller 37 Heat medium temperature detection part 38 Solar radiation temperature detection part 42 Heating apparatus

Claims (7)

A heat collector that collects solar heat, a pump that circulates a heat medium heated by the heat collector through a circuit, and a heat dissipation that dissipates heat that has been heat-exchanged by the heat exchanger provided in the circuit And heating device. The heating device according to claim 1, wherein the heat exchanger is provided with a heating device for heating the heat medium on the circuit. The heating device according to claim 2, wherein the heating device is controlled to heat the temperature of the heat medium to a temperature required for the heating device by a controller that receives a signal from the heat medium temperature detection unit. The heating apparatus according to claim 1, wherein the heat exchanger is disposed on a panel portion for circulating the second heat medium in order to heat the second heat medium for heating. The heating device according to claim 3, wherein the controller receives a signal from a solar radiation temperature detection unit provided in the heat collector and determines an operation start time of the heating device. The heating device according to claim 5, wherein the controller operates the pump to circulate the heat medium in the circuit when the detected temperature of the solar radiation temperature detecting unit is lower than the indoor temperature detecting unit provided in the radiator. The heating apparatus according to claim 1, wherein the heat exchanger is provided with a heat storage tank for a heat medium heated by the heat collector on the upstream side of the circuit.

Images