JPH07198211A - Solar heat utilization system - Google Patents

Abstract

PURPOSE:To operate a solar heat utilization system in the state where it is fitted to the purpose of a user by setting the operation conditions of one circulation system of first and second circulation systems in response to application conditions fixed to an individual solar heat utilization system. CONSTITUTION:A first circulation system includes a heat collector, a floor heater 12, a heat medium holding tank 16, a heat col lector circulation pump 26, a floor heater circulation pump 38, and pipes 24, 25, 36, 34, and a second circulation system includes a heat collector, a heat exchanger 20, the heat medium holding tank 16, the heat collector circulation pump 26, a heat exchanger circulation pump 48, and pipes 24, 25, 46, 47. Operation conditions of one circulation system of the first and second circulation systems is set in response to application conditions inherent to an individual solar heat utilization system, and the solar heat utilization system is operated with the operation conditions. Hereby, the solar heat utilization system is operated in the state fitted to the purpose of a user.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar heat utilization system which heats a heat medium with solar heat and heats or heats water by the heat of the heat medium.

[0002]

2. Description of the Related Art Japanese Patent Application No. 3-358736 discloses
(1) A heat collector that heats a heat medium with solar heat, a radiator having a heat storage body that is heated by the heat medium, and circulates the heat medium in a first circulation path that includes the heat collector and the radiator in series A first circulation system including a first circulation means, (2) a heat collector, a heat exchanger for warming the water in the hot water supply tank with a heat medium, and a second heat collector and a heat exchanger in series There is described a solar heat utilization system including a second circulation system including a second circulation unit that circulates a heat medium in the circulation path, and a circulation control device that controls both circulation systems.

[0003]

SUMMARY OF THE INVENTION This type of solar heat utilization system has a combination of system components such as the size of a building to be installed, the size of a heat storage body and a hot water supply tank, the installation position of a solar heat collector, The usage conditions such as sunshine conditions determined by the installation direction, environmental temperature, user's purpose of using the system, living conditions, and room temperature preferences are different. However, in the conventional solar heat utilization system, since the circulation system was not controlled in accordance with the use conditions peculiar to each of the above systems, there is waste in the operation of the first or second circulation system, There was a problem that it did not suit the taste of the user.

Therefore, the first invention to the fourth invention operate in a solar heat utilization system provided with at least one of the first circulation system and the second circulation system, in accordance with a use condition unique to each solar heat utilization system. The task was to make it possible to set the conditions.

[0005]

In order to solve this problem, in the solar heat utilization system of the first invention, the operating conditions of at least one of the first circulation system and the second circulation system are set to individual solar heat utilization systems. An operating condition setting means is provided which sets the operating condition according to its own use condition.

Here, at least one of the first circulation system and the second circulation system may be provided. When only one of the first circulation system and the second circulation system is provided, the operating condition setting means necessarily sets the operating condition of the circulating system provided. When both the first circulation system and the second circulation system are provided, the case where the operation condition setting means sets the operation condition of only one of the circulation systems,
In some cases, the operating conditions of both circulation systems are set.

Further, the operating condition setting means may be an operation switch means manually set by a user, a service engineer, a system installer, a manufacturer, etc., but it may be a computer or the like that automatically sets according to the usage conditions. It may be.

The second invention is applied to a solar heat utilization system having both a first circulation system and a second circulation system, and the operating condition setting means has a first state and a first state in which only the first circulation system can operate. State switching means for switching between a second state in which both the one circulation system and the second circulation system can operate are included.

A third aspect of the invention is to provide at least one heat collector circulation pump for causing a heat medium to flow in an outflow passage from the heat collector of at least one of the first circulation passage and the second circulation passage, and the outflow thereof. It is applied to a solar heat utilization system including a heat medium temperature sensor for detecting the temperature of the heat medium provided in the middle of the path, and the operating condition setting means intermittently operates the heat collector circulation pump at fixed time intervals. It is intended to include heat collector circulation pump operating condition setting means for setting at least one of the fixed time and the start and end times of the intermittent operation.

A fourth aspect of the present invention is a third circulation for circulating the heat medium in a third circulation path including a heat storage body, an auxiliary heat source for heating the heat medium of the heat storage body, and the heat storage body and the auxiliary heat source device in series. It is applied to a solar heat utilization system having a third circulation system including means, and the operating condition setting means includes (a) a first state in which the operation of the third circulation system is always allowed, and a preset time. In the third circulation system operating state switching means for switching between the second state allowed in step (b), and (b) at least one of the operation permissible time setting means for setting the time during which the operation of the third circulation system is allowed. It is said that

[0011]

In the solar heat utilization system of the first invention, the operating condition setting means makes the operating conditions of at least one of the first circulation system and the second circulation system unique to the individual solar heat utilization system. The solar heat utilization system is operated under the operating conditions set accordingly.

In the solar heat utilization system of the second invention, the first state in which the heat medium heated in the heat collector is circulated only in the heat storage body of the radiator and the heat exchanger for warming the water in the hot water tank The state switching means performs the state switching between the circulated second state. For example, when the capacity of the heat storage body is large, the room heated by the radiator is large, the underfloor temperature is relatively low, the user desires a relatively high room temperature, etc. The heat carrier is prevented from circulating to the exchanger. Also,
If it is also desired to warm the water in the hot water tank, it is switched to the second state.

A manual changeover switch is an example of a simple state changeover means, but an automatic changeover means for automatically changing over between the first state and the second state and a changeover condition setting means for setting conditions for the automatic changeover. It is also possible to include and, and in this case, when the importance is attached to the heating, the switching condition setting means tightens the switching condition from the first state to the second state. If necessary, it is possible to set conditions such that the heat medium is not circulated throughout the day in the heat exchanger. On the contrary, when hot water supply is important, the condition for switching from the first state to the second state is relaxed, and the heat medium is easily circulated in the heat exchanger. 1 like summer
If the operating conditions of the first circulation system are not met even at the coldest time of the day, the heat storage of the first circulation system will continue throughout the day even if the switching conditions are not particularly relaxed. Although the heat medium cannot be circulated in the body, the condition for switching from the first state to the second state is always the second even when there are times when the temperature is relatively low, such as in spring and autumn. If the operating condition of the first circulation system in the second state is set severely so that the heat medium is circulated only in the heat exchanger of the second circulation system, the heat medium is circulated only in the heat exchanger of the second circulation system. It is possible to be

In the solar heat utilization system of the third invention,
If the heat collector circulation pump is operated based on the operating condition set by the heat collector circulation pump operating condition setting means, the temperature of the heat medium of the heat collector is detected by the heat medium temperature sensor. Hereinafter, the intermittent operation of the heat collector circulation pump for detecting the temperature of the heat medium is referred to as an inquiry operation.
The operating condition set by the heat collector pump operating condition setting means may be either one or both of the above-described fixed time and the operation start time and the end time. The above-mentioned fixed time is set to an appropriate length according to, for example, the capacity of the collector pump and the length of the heat medium passage (pipe) from the heat collector to the heat medium temperature sensor. The time is set to an appropriate time according to the season, the installation location of the collector, the installation direction, etc.

The solar heat utilization system of the fourth invention comprises a heat storage body, an auxiliary heat source device for heating the heat medium of the heat storage body, and a third circulation means for circulating the heat medium in a third circulation path including these in series. It has a third circulation system including. And
The operation condition setting means (a) is provided with a third circulation system operation state switching means, and when the first state is selected by the third circulation system operation state switching means, the operation of the third circulation system is always permitted. To be done. For example, if a certain condition such as the temperature of the heat storage body being lower than a set value is satisfied, the third circulation system such as the auxiliary heat source device and the third circulation path pump is activated. Further, when the operating condition setting means includes the (b) operation allowable time setting means, the operation of the third circulation system is allowed only within the time set by the operation allowable time setting means. For example,
Even if the room temperature of the room in which the radiator is installed can be reduced, it is necessary to activate the auxiliary heat source device and the third circulation means even during sleep for a certain period of time, even if the temperature of the heat storage body becomes lower than the set value. However, this time zone can be set according to the living condition of the user.

[0016]

In the solar heat utilization system of the first aspect of the present invention, at least one of the first circulation system and the second circulation system can be operated in accordance with the unique use conditions of the solar heat utilization system. Therefore, it becomes possible to operate the individual solar heat utilization systems having different usage conditions as efficiently as possible, or to operate as much as possible according to the purpose of the user. In the solar heat utilization system of the second aspect of the invention, the state switching means switches between two states, that is, a state in which only heating by the radiator is performed and a state in which both heating and heating of the hot water tank are performed. Therefore, the heat energy of the heat medium heated in the solar heat collector can be effectively used according to the purpose of the user and the installation environment of the solar heat utilization system.

In the solar heat utilization system of the third aspect of the present invention, the operation duration time, operation start time and end time of the heat collector circulation pump are set by the heat collector circulation pump operation condition setting means, so that the inquiry operation is not wasted. It is possible to save energy. If the start time, end time, etc. are set according to the season such as sunshine hours, the inquiry operation is performed during the time when the heat medium is not likely to be heated in the solar heat collector, and unnecessary energy consumption is avoided. It Also, if the operation duration is set according to the capacity of the heat collector circulation pump and the length of the heat medium passage from the heat collector to the heat medium temperature sensor, the operation duration of the heat collector circulation pump will be Compared with the case where the length is set to be common to all solar heat utilization systems, the operation duration of the collector circulation pump is shortened in most of the solar heat utilization systems, and energy saving is achieved.

In the solar heat utilization system of the fourth aspect of the invention, since the operating condition of the third circulation system is set by at least one of the third circulation system operation state switching means and the operation permissible time setting means, the auxiliary heat source device or the like. The three circulatory systems can be operated under conditions that suit the user's living conditions and preferences. Therefore, energy consumption due to useless operation of the auxiliary heat source device, the third circulation means, etc. is avoided.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A solar heat utilization system which is an embodiment common to the first to fourth inventions will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 is a solar heat collector also serving as a roofing material (hereinafter, abbreviated as solar heat collector), 12 is a floor heater as a radiator, 14 is a hot water supply tank, and 16 is a heat medium holding tank. The solar heat collectors 17 to 19 (see FIG. 2, hereinafter referred to as heat collectors) of the solar heat collector 10 are arranged on the roof, and the heat mediums stored in the heat collectors 17 to 19 ( In this example, water) is warmed by solar heat. The floor heater 12 arranged in the lower part of the floor has a heat storage bed as a heat storage body heated by a heat medium, and the room is warmed by the heated heat storage floor. Hot water is stored in the hot water supply tank 14, and the hot water is warmed by the heat medium in the heat exchanger 20. Hot water is in the bathroom, washroom,
It is supplied to the kitchen etc.

The heat exchanger 20 is provided in the middle portion of the hot water supply tank 14 and has a metal pipe 21 as a heat exchange pipe line. The heat medium in the metal tube 21 warms the hot water in the hot water supply tank 14. Although the metal tube 21 is illustrated as a simple zigzag shape, it is actually wound many times in a spiral shape. It should be noted that heat exchange can be performed more efficiently if a structure having a plurality of narrow tubes and a large number of fins fixed to them is used.

A space is provided between the top plate of the heat medium holding tank 16 and the upper surface of the heat medium so that the heat medium can be accommodated even when the heat medium becomes high in temperature and expands. Further, a pipe 22 having an opening in the atmosphere is attached above the heat medium holding tank 16 to prevent the pressure in the tank from becoming high, and even if the heat medium boils, there is no problem. Further, at a predetermined position of the heat medium holding tank 16,
A heat medium amount lower limit switch 23 is attached. The heat medium amount lower limit switch 23 is in the ON state when the upper surface of the heat medium is above the predetermined position, but is in the OFF state when it is below the upper position. The state of the heat medium amount lower limit switch 23 is monitored by the control device 33.

Heat collectors 17 to 19 and heat medium holding tank 16
Are connected to each other by pipes 24 and 25, and a heat collector circulation pump 26 is provided in the middle of the pipe 24. Tube 24
Is connected to the bottom of the heat medium holding tank 16 and the other end is connected to a pipe 28 connecting the heat collectors 17 and 18, as shown in FIG. 4, and the pipe 28 holds the heat medium. Is connected to the heat medium holding unit 30 (see FIG. 3).
One end of the pipe 25 is connected to the heat medium containing portion 30 of the heat collector 19, and the other end is connected to the middle part of the heat medium holding tank 16. The heat medium temperature sensor described later is provided in the middle of the pipe 25. Three
Two are provided.

The heat medium temperature sensor 32 is a heat collector 17-19.
The temperature of the heat medium warmed in 1 is detected. When the temperature detected by the heat medium temperature sensor 32 is high, it means that the temperature of the heat medium liquid heated in the heat collectors 17 to 19 is high and the heat collecting condition is good.

Since the heat medium temperature sensor 32 is attached at a position apart from the heat collectors 17 to 19 as described above, when the heat collector circulation pump 26 is in the non-operating state, the heat collectors 17 to 19 are The heat collecting status of 19 cannot be detected. Therefore, the heat collector circulation pump 26 is continuously driven for a set time every 15 minutes based on a command from the control device 33. That is, intermittent operation is performed. The set time is determined by the control device 33 and measured by a timer built in the control device 33. Heat collector circulation pump 2
When 6 is continuously operated for a set time, the heat collectors 17 to 19
The heat medium liquid warmed in 1 reaches the heat medium temperature sensor 32, and the pipe 25 on the way is also warmed, and the temperature of the heat medium liquid in the heat collectors 17 to 19 can be detected by the heat medium temperature sensor 32. Of.

Thus, even if the heat medium temperature sensor 32 is not attached to the heat collectors 17 to 19 on the roof itself, the heat collector 1
The heat collection situation in 7 to 19 can be detected. By attaching the heat medium temperature sensor 32 in the middle of the pipe 25, the heat medium temperature sensor 32 can be easily maintained and inspected, and the heat medium temperature sensor 32 is attached to the heat collectors 17 to 19. Construction costs will also be reduced.
Furthermore, since the lead wires and the like required for wiring can be shortened, the cost can be reduced from this point as well. If the heat medium temperature sensor 32 is provided at a position far from the heat collectors 17 to 19 and close to the heat medium holding tank 16, the continuous operation time of the heat collector circulation pump 26 when the inquiry operation is performed becomes long. Maintenance and inspection of the heat medium temperature sensor 32 are facilitated. On the other hand, when the heat collector circulation pump 26 is provided at a position close to the heat collectors 17 to 19 and far from the heat medium holding tank 16, the operation duration time of the heat collector circulation pump 26 is shortened, but the heat medium temperature sensor 32 is provided.
It will not be easy to maintain and inspect. Heat medium temperature sensor 32
The mounting position of is determined in consideration of these circumstances.

The floor heater 12 and the heat medium holding tank 16 are tubes 3 made of a synthetic resin such as cross-linked polyethylene or polybutene.
4, 36, and a floor heater circulation pump 38 is provided in the middle of the pipe 34. One end of the pipe 34 penetrates the bottom plate of the heat medium holding tank 16 and extends upward, the upper end thereof is bent at a substantially right angle, and the tip end thereof has an opening widened. The other end is connected to a pipe 44 provided in the floor heater 12.

The opening of the tube 25 and the opening of the tube 34 are opposed to each other with a gap of about 1.5 times the diameter of the opening. While the heat collector circulation pump 26 and the floor heater circulation pump 38 are operating, the heat medium heated in the heat collectors 17 to 19 is discharged from the opening of the pipe 25 and is sucked from the opening of the pipe 34 as it is. And is circulated to the floor heater 12. The heat medium discharged from the opening of the pipe 25 hardly diffuses into the heat medium holding tank 16, and the pipe 25 and the pipe 34 are substantially connected to each other. Further, since the tip end portion of the opening of the tube 34 is expanded, the heat medium discharged from the tube 25 can be sucked from the tube 34 with little leakage. On the other hand, when the heat collector circulation pump 26 is in the operating state and the floor heater circulation pump 38 is in the inoperative state, most of the heat medium discharged from the pipe 25 flows into the heat medium holding tank 16.

Even if a switching valve is not provided at the connecting portion between the pipe 25 and the pipe 34, by switching the operating state of the floor heater circulation pump 38, the circulation path of the heat medium heated in the heat collectors 17 to 19 is obtained. Can be switched.
The distance between the openings of the tubes 25 and 34 for favorably performing this switching varies depending on the flow velocity of the heat medium in the tubes 25 and 34, but is generally 1/4 of the diameter of the opening of the tube 25. ~
The range of 4 times is preferable, and the range of 1/2 to 2 times is particularly preferable.

As described above, in this embodiment, since the heat medium discharged from the opening of the pipe 25 and the heat medium sucked from the opening of the pipe 34 are substantially the same in amount, the heat medium discharged from the pipe 25 is the same. Is almost entirely sucked from the pipe 34. However, the heat medium discharged from the pipe 25 and the amount of the heat medium sucked from the pipe 34 are different depending on the number of collectors included in the solar heat collector 10. It may not match. When the amount of the heat medium discharged from the pipe 25 is smaller than the amount of the heat medium sucked from the pipe 34, the pipe 34
If the amount of the heat medium discharged from the pipe 25 is larger than that of the heat medium discharged from the pipe 25, the heat medium in the heat medium holding tank 16 is also sucked in together with the heat medium discharged from the pipe 25. A part of the heat medium discharged from is stored in the heat medium holding tank 16. in this way,
Since the pipe 25 and the pipe 34 are arranged in the tank 16 without being connected, no inconvenience occurs even if their amounts are different.

One end of the pipe 36 is connected to the pipe 44 of the floor heater 12.
And the other end is connected to the bottom of the heat medium holding tank 16.

One end of the metal tube 21 of the heat exchanger 20 is a tube 4
6 is connected to the intermediate portion of the heat medium holding tank 16 by
The other end is connected to the lower part by a pipe 47. Tube 46
A heat exchanger circulation pump 48 is attached midway.

Further, the heat medium holding tank 16 has a pipe 5
Boiler 52 is connected through 0, 51, and pipe 50
A boiler circulation pump 54 is attached midway. The boiler 52 heats the heat medium in the heat medium holding tank 16.

The first to third circulation systems are constituted by the above respective constituent elements. The first circulation system is a heat collector 17-1.
9, a floor heater 12 having a pipe 44, pipes 24 and 25, a heat medium holding tank 16, pipes 36 and 34, and a first circulation path, and a collection unit for moving the heat medium in the first circulation path. The second circulation system includes a heat collector circulation pump 26, a first circulation means including a floor heater circulation pump 38, and a second circulation system includes a heat collector 17 to 19, a heat exchanger 20 including a metal pipe 21, and a pipe 2.
4, 25, the heat medium holding tank 16, the second circulation path formed by the pipes 46, 47, and the second circulation means having the heat collector circulation pump 26 and the heat exchanger circulation pump 48. The third circulation system is the floor heater 12, the boiler 5
2, a third circulation passage formed by the pipes 34, 36 and the pipes 50, 51, and a third circulation means including a floor heater circulation pump 38 and a boiler circulation pump 54.

The floor heater 12, the hot water supply tank 14, and the solar heat collector 10 will be described below.

As shown in FIG. 7, the floor heater 12 is provided with a concrete layer 56 as a heat storage body and a pipe 44 arranged inside the concrete layer 56. The floor heater 12 has a heat insulating material 58 laid on the ground and arranged on the heat insulating material 58. A floor material 60 is closely attached to the upper surface of the floor heater 12. The pipe 44 is 1 / from the bottom of the concrete layer 56.
It is arranged in a double spiral shape at a position of 3-1 / 4.
That is, the pipe 44 is arranged in a spiral shape from the edge portion of the flooring material 60 toward the central portion, and then is arranged in a spiral shape from the central portion toward the edge portion, and one end portion of the pipe 44 is arranged. The other ends are connected to the pipes 36, respectively. The pitch of the adjacent pipes 44 in the concrete layer 56 is 150-
It is set to 200 mm. Use a long tube 44,
There are no connections in the concrete layer 56.

Since the pipe 44 is buried under the concrete layer 56, the heat medium in the pipe 44 is the concrete layer 5
Many parts of the top of 6 can be warmed and the concrete layer 56 can store much heat. Further, by thickening the upper portion of the concrete layer 56, the peak of the temperature of the heat medium in the pipe 44 and the peak of the temperature of the upper surface of the concrete layer 56 can be shifted, so that the concrete layer 56 is warmed during the warm daytime. The flooring material 60 can be warmed after it becomes cold at night. Further, since the pipes 44 are arranged in a spiral shape, the flooring material 60 is uniformly heated.

The concrete layer 56 includes an underfloor temperature sensor 6
2 The mounting tube 63 is buried. One end of the pipe 63 is opened to the outer wall of the concrete layer 56, and the other end is located in the middle portion of the concrete layer 56 and in a position close to the pipe 44. The underfloor temperature sensor 62 is inserted from the opening of the tube 63, and the sensor section is located at the other end of the tube 63. The pipe 63 is slightly inclined so that the one end thereof is on the lower side and the other end thereof is on the upper side, so that rainwater and the like do not enter the pipe 63.

By thus burying the sensor mounting pipe 63 and installing the underfloor temperature sensor 62 therein, the underfloor temperature sensor 62 can be easily removed without breaking the concrete layer 56. Further, the average underfloor temperature can be detected by disposing the other end of the pipe 63 in the center of the concrete layer in plan view. The underfloor temperature is supplied to the differential temperature thermostat stat 64 together with the above-mentioned heat medium temperature.

In the concrete layer 56, an underfloor temperature thermostat (underfloor temperature THx, underfloor temperature THf) 65 is further provided.
Is also installed. As shown in FIG. 8, the underfloor temperature thermostat 65 is of an electronic type and includes a thermostat control unit 66 and a sensor unit 67. Sensor section 67
Is composed of an NTC thermistor whose resistance value decreases as the temperature rises, and has a temperature characteristic as shown in FIG. The sensor section 67 is connected to the thermostat control section 66 by a lead wire 68, and the thermostat control section 66 can be turned on / off depending on the temperature detected by the sensor section 67, as shown in FIG. ing.

A variable resistor R and a switch S are connected in parallel between the sensor section 67 and the thermostat control section 66. When the switch S is in the OFF state, the resistance value of the sensor unit 67 is directly detected by the thermostat control unit 66, but when the switch S is in the ON state, the resistance value of the sensor unit 67 alone is detected by the thermostat control unit 66. A smaller resistance value will be detected.

That is, as shown in FIG. 9, the underfloor temperature is actually T1 and the resistance value is R1, but when the resistance R is connected in parallel, the overall resistance value becomes R2, and as a result,
In the control unit 66, the temperature T2 higher than the actual temperature T1
Will be detected as. In other words, the set temperature can be switched between two stages. Switch S
The set temperature Th when the switch S is in the OFF state and the set temperature Te when the switch S is in the ON state can be set to different temperatures.
And Te is a temperature difference Tr corresponding to a resistance difference r. In the present embodiment, the set temperature Th and the temperature difference Tr can be adjusted. Further, in this case, the set temperature Te is set lower than the set temperature Th, and as described later, the heat medium warmed immediately after the start of the operation of the first circulation system, that is, immediately after the sunrise can be effectively used. There is an advantage. The switch S is turned on / off based on a command from the control device 33.

When the boiler 52 is not in operation, the controller 33
The switch S is turned on based on the command of, but is turned off for most of the time, and the underfloor temperature Tf is detected by the thermostat control unit 66 as it is. While the boiler 52 is operating, the switch S is turned on and the resistance R
Is connected to the lead wire 68, and the thermostat control unit 66
The temperature detected by the temperature difference T is lower than the actual underfloor temperature.
It becomes higher by r. When the detected temperature reaches the set temperature Th (the actual underfloor temperature is Te = Th-Tr), the boiler 52
Is stopped and the boiler circulation pump 54 is stopped.
Is deactivated.

Further, the program of the flowchart shown in FIG. 16 is stored in the ROM of the computer of the thermostat control unit 66. The set value Tx in FIG. 16 is a set value Te that requires auxiliary heating when the switch S is ON, and a set value Th that requires solar heating when the switch S is OFF. In the figure, the underfloor temperature thermostat 65 is referred to as the underfloor temperature TH.

In step 1 (hereinafter abbreviated as S1; the same applies to other steps), it is determined whether or not the thermostat controller 66 is in the ON state.
While the determination is NO, it is determined in S2 whether the underfloor temperature Tf is lower than a value (Tx-1) lower by 1 ° C than the set value. If it becomes lower, the thermostat control unit 66 is switched to the ON state in S3. Then, if the thermostat control unit 66 is once in the ON state, that is, if the solar heating or the auxiliary heating is being performed, the determination in S1 is YES, and in S4, the underfloor temperature Tf is higher than the set value Tx. It is determined whether or not it has become. If the determination result is YES, the thermostat control unit 66 is turned off in S5, and if the determination result is NO, the thermostat control unit 66 is turned off.
Stay in N state. Turn on the thermostat control unit 66,
Since the switching of OFF is provided with a hysteresis of 1 ° C, it is possible to avoid frequent start and stop of solar heating and auxiliary heating.

Next, the area around the hot water supply tank 14 will be described. In the hot water supply tank 14, as shown in FIG.
78 is connected. One end of the pipe 76 is the hot water supply tank 1
4 and the other end is connected to the water pipe via the pressure reducing valve 80. The pipe 76 is branched in the middle and communicated with the boiler 86 via the stop valve 84. The pressure reducing valve 80 adjusts the water pressure of the water pipe to a desired water pressure, and when the stop valve 84 is open, water is supplied to the boiler 86. A water drain valve 88 is attached to the bottom of the hot water supply tank 14.

One end of the pipe 78 is connected to the upper end of the hot water tank 14, and the other ends thereof are stop valves 90, 92 and the boiler 8.
The faucets 94 and 96 are attached to the front end via 6. The pipe 78 is branched on the way, and a faucet 98 is attached to the tip of the branched pipe. The hot water in the hot water supply tank 14 is supplied to the bathtub 100 through the faucet 98. Further, the pipe 78 has an air bleeding valve 102,
A safety valve 104 is attached. The hot water in the hot water supply tank 14 is switched to the faucet 94, by switching the stop valves 90, 92.
96 or the bath 100.
The bath 100 is connected to the boiler 86 by a pipe 106, and when the temperature of the hot water in the bath 100 is low, the hot water in the bath 100 can be circulated to the boiler 86 to be warmed.

A hot water temperature sensor 108 for detecting the temperature of hot water in the hot water supply tank 14 is attached near the bottom of the hot water supply tank 14, and the hot water temperature is supplied to the differential temperature thermostats stats 110 and 111 together with the heat medium temperature. . The differential temperature thermostats 110 and 111 will be described later. Further, an upper temperature thermostat 112 (upper temperature TH) having an upper temperature sensor unit (not shown) for detecting an upper temperature of the tank and a control unit is provided above the hot water supply tank 14. The ROM of the computer forming the control unit is shown in FIG.
The program represented by the flowchart is stored. When the determination in S12 is YES and the upper temperature thermostat 112 is switched to the OFF state in S13, the upper temperature thermostat 112 is not switched to the ON state until after 24 hours and YES is determined in S14.
The upper temperature Tm of the hot water supply tank 14 is usually lower than the set value Tmax, but once becomes high and is switched to the OFF state, the upper temperature Tm is kept until 24 o'clock (0 o'clock).
Is lower than the set value Tmax, all pumps 26, 3
Driving of 8, 48 and 54 is prohibited. In other words, the operation of all circulation systems of this solar heat utilization system is prohibited.

When the upper temperature Tm of the hot water supply tank 14 is higher than the set temperature Tmax, there is a possibility that the temperature of the heat medium has risen to near the boiling point. When the heat medium in the heat collectors 17 to 19 boils, the heat medium in the form of gas is collected.
Also, the liquid heat medium in the pipe 25 is removed and the heat medium flows to the heat medium holding tank 16 side. Since the gaseous heat medium is condensed while flowing toward the heat medium holding tank 16, it does not reach the heat medium holding tank 16.
The amount of the heat medium in the heat medium holding tank 16 increases only by the amount of the liquid heat medium in the heat collectors 17 to 19 removed by the gaseous heat medium, but the heat medium in the heat collectors 17 to 19 is gas. The heat collector 17 to 1
9 becomes overheated. The heat collector 17 in this overheated state
When a liquid heat carrier is supplied to 19, it boils violently and eliminates the liquid heat carrier. If this is repeated, a large noise is generated, and the life of the heat collectors 17 to 19 is shortened.

In order to avoid this problem, the upper temperature Tm
The supply of the heat medium to the heat collectors 17 to 19 is stopped while is higher than the set temperature Tmax. In this case, the heat medium temperature sensor 3
Although it is possible to directly detect the heat medium temperature Tc by means of 2, once the supply of the heat medium is stopped, if the heat collector circulation pump 26 is operated again to detect the heat medium temperature Tc, Since the heat medium is supplied to the heat collectors 17 to 19, the above-mentioned problems cannot be solved.

The heat medium in the heat collectors 17 to 19 is overheated during the midsummer day. At this time, since the underfloor temperature Tf is higher than the set temperature Th, floor heating is not performed.
On the other hand, the temperature of the hot water in the hot water supply tank 14 decreases as the hot water is used, so that the heat medium is supplied to the heat exchanger 20. As a result, the temperature of the hot water in the hot water supply tank 14 rises, but convection occurs in the hot water supply tank 14, and the tank upper temperature Tm is higher than the temperature of the heat medium than the detection value of the hot water temperature sensor 108 provided below. Therefore, it is determined whether the temperature of the heat medium in the heat collectors 17 to 19 has risen close to the boiling point, depending on whether the tank upper temperature Tm is higher than the set temperature Tmax.

The control device 33 is mainly composed of a computer, and includes a circulation system operation control computer 116, an inquiry operation control computer 118, and an inquiry operation condition setting computer 120. Control device 3
The above-mentioned heat medium amount lower limit switch 23, the differential temperature thermostats 64, 110, 111, the underfloor temperature thermostat 65, the upper temperature thermostat 112, etc. are connected to the input part of 3, and the parallel operation provided on the operation panel 126 is performed. Changeover switch 128, auxiliary heating mode selection switch 1
30, time, temperature input unit 132 and the like are connected. The circulation pumps 26, 38, 48, 54, the boiler 52, and the like are connected to the output unit via a drive circuit (not shown), and the indicator 13 provided near the operation panel 126 is connected to the output unit.
4 is connected.

Circulation system operating state control computer 11
The ROM of 6 stores the program represented by the flowchart of FIG. 18, and the ROM of the inquiry operation control computer 118 stores the program represented by the flowchart of FIG. Further, the ROM of the inquiry operation condition setting computer 120 stores a fixed time setting program and a start time and end time setting program (not shown). That is, in this embodiment, the heat collector circulation pump 26 and the floor heater circulation means 38 as the first circulation means are common to the first circulation means of the first circulation system and the second circulation means of the second circulation system. And the heat exchanger circulation pump 48 as the second circulation means, the boiler 5 of the third circulation system
2. The operation of the boiler circulation pump 54 as the third circulation means is controlled, and the operation status thereof is displayed on the display device 134.

The differential temperature thermostat 64 is supplied with the output signals of the heat medium temperature sensor 32 and the underfloor temperature sensor 62. When the temperature difference (Tc-Tf) is equal to or larger than the first set value, the ON state is set, and when the temperature difference is equal to or smaller than the second set value, the OFF state is set. Also, the differential temperature thermostat 11
The output signals of the heat medium temperature sensor 32 and the hot water temperature sensor 108 are supplied to 0 and 111, and the temperature difference (Tc−
When Tt) is equal to or larger than the first set value, the ON state is set, and when Tt) is equal to or smaller than the second set value, the OFF state is set. The differential temperature thermostat 111 is similar to the differential temperature thermostat 110, but the first set value and the second set value of the differential temperature thermostat 111 are respectively set from the first set value and the second set value of the differential temperature thermostat 110. It has been raised.

When the differential temperature thermostats 64 and 110 are ON, the heat collector circulation pump 26 and the floor heater circulation pump 3 are in the ON state.
8 shows that the solar heat can be effectively used by operating the heat exchanger circulation pump 48 and the like, and when the differential temperature thermostat 111 is in the ON state, the parallel operation described later can be performed. Is shown. That is, when the heat medium temperature Tc is higher than the underfloor temperature Tf by a set value or more, or when it is higher than the hot water temperature Tt by a set value or more, the heat medium is the concrete layer 56 or the hot water tank 14.
It shows that it is in a state of being heated enough to warm the inner hot water. Heating performed by supplying a heat medium heated by solar heat to the floor heater 12 is referred to as solar heating, and heating in the hot water supply tank 14 performed by supplying the heat medium heated by solar heat to the heat exchanger 20. It is called solar hot water supply. Here, the differential temperature thermostat 64,
The respective set values of 110 and 111 are predetermined in this solar heat utilization system. It is possible to input by the user, but there is no inconvenience even if the judgment of validity is made according to a predetermined standard.

The parallel operation change-over switch 128 allows the parallel operation to allow both the solar heating and the solar hot water supply (switch ON), and allows the solar heating to be performed, and the solar hot water supply is performed. It is a switch for switching to a parallel operation prohibition state (switch OFF) that prohibits this. If both the differential temperature thermostats 64 and 111 are in the ON state and the parallel operation allowable state is selected, both solar heating and solar hot water supply are performed, but if the parallel operation prohibited state is selected, Solar heating is provided but solar hot water is not provided.

Whether or not the parallel operation is performed is determined based on the state of the differential temperature thermostat 111. As described above, the differential temperature thermostat 111 does not switch to the ON state unless the difference between the heat medium temperature and the hot water temperature becomes higher than the first set value in the differential temperature thermostat 110. Since the parallel operation is performed such that the solar hot water is supplied after the solar heating is performed, the solar hot water is supplied by the heat medium cooled to some extent by the solar heating. Therefore, when the solar hot water is supplied, the heat medium temperature may be lower than the hot water temperature. In order to avoid this, the parallel operation is started when the difference between the heating medium temperature and the hot water temperature is sufficiently high, that is, when the difference between the normal solar hot water supply and the normal hot water supply is performed. . In the present embodiment, the first set value of the differential temperature thermostat 110 is 7 ° C, the second set value is 3 ° C, and the first set value of the differential temperature thermostat 111 is 12 °.
C, the second set value is 8 ° C.

As shown in FIG. 11, the auxiliary heating mode selection switch 130 has a mode A in which auxiliary heating by the boiler 52 is always permitted, a mode B in which it is permitted only within a set time, or a mode C in which it is always prohibited. This is the switch to select. The underfloor temperature Tf is lower than the set value Te, and
When the mode A is selected, the boiler 52 is operated, the boiler circulation pump 48 and the floor heater circulation pump 38 are operated, and the heat medium warmed by the boiler 52 is supplied to the pipe 44 to perform auxiliary heating. Done. If mode B is selected, if the current time is within the set time, the auxiliary heating is performed, but if it is not within the set time, the auxiliary heating is not performed. If mode C is selected, no auxiliary heating is done. In this case, the set time, the set temperature Th, the temperature difference Tr, etc. are as follows:
Input from 2. The control of the control device 33 will be described later.

The solar heat collector 10 will be described. Since the solar heat collector 10 is also used as a roof material, the heat collectors 17 to 19 are not on the roof material such as roof tiles but on the roof base material (hereinafter, abbreviated as a field board) 152 and the waterproof sheet 15 is provided.
3 is laid and installed on it. These collectors 17-
19 is installed along the slope of the roof as shown in FIG. 4, and the upper side of FIG. 4 is the upper side of the roof. That is, FIG.
In the illustrated example, the heat collector 19 is installed above the heat collector 17, and the heat collector 17 and the heat collector 18 are adjacent to each other at the same height.

The assembly of parts for a solar heat collector also serving as a roof material in this embodiment is composed of tubes 24, 25, which serve as heat medium tubes.
28, heat collector circulation pump 26 as a heat medium moving means,
The three heat collectors 17 to 19 (including the support member 160), the plurality of support stands 161, the floor plate 162, and the water guide plate 16 described above.
4,166, etc. are included. Hereinafter, each component for solar heat collectors will be described.

Since the collectors 17 to 19 have the same structure, the collector 17 will be described as a representative. Collector 17
Is a shallow frame-shaped collector body 180, as shown in FIG.
A glass plate 182 as a transparent plate covering the opening above it,
The heat insulating material 184 provided on the waterproof sheet 153, the heat receiving body 186 provided on the heat insulating material 184 and forming the heat medium holding portion 30, and the support member 160 are provided. The heat medium holders 30 are communicated with each other, and both ends thereof are projected from the right end of the upper plate and the left end of the lower plate of the collector body 180, respectively, and the connecting parts 188, 190 (see FIG. 4). It is said that. The heat medium holder 30 is filled with a heat medium, and the heat medium is warmed by the radiant heat of the sun.

As is apparent from FIGS. 3 and 4, the upper portions of the left and right side plates of the heat collector main body 180 are bent outward to form flanges 192 and 193 having an L-shaped cross section. As is apparent from FIGS. 4 and 6, the flanges 195 and 196 are bent inward to have L-shaped cross sections. A glass plate 182 is placed on the upper planes of the flanges 192 to 196 via a cushion material 198. The cushion material 198 has a longitudinal shape with an L-shaped cross section. The glass plate 182 is supported by the glass retainer 200 at the left and right edges and the upper edge, and by the support member 160 at the lower edge. The support member 160 will be described later.

As shown in FIGS. 3 and 4, two fixing legs 206 for fixing the heat collector 17 are attached to the flange 193 at the upper right portion so as to be separated from each other. The fixed leg 206 is an L-shaped plate member, and a U-shaped notch 208 is formed at the tip of the horizontal portion. Similarly, the upper left flange 1
Two fixed legs 210 are attached to 92 at a distance from each other.

As shown in FIG. 6, the support member 161 has flanges 220 and 222 each having an L-shaped longitudinal section.
It is equipped with. The flange 220 includes a flat plate portion 223 and a first protrusion 224, and the flange 222 includes the flat plate portion 22.
6 and the second protrusion 227. The length of the first protrusion 224 is longer than that of the second protrusion 227, and
Inwardly bent ribs 228 are formed. When attaching the flanges 220 and 222 to the heat collector body 180, the outer surface of the flat plate portion 226 of the flange 222 is brought into contact with the outer surface of the lower plate 230 of the heat collector body 180, and the flat surface portion 223 of the flange 220 is attached to the inner surface thereof. With the outer surface of the abutting contacted, it is fixed by a bolt not shown. In this case,
The upper portion 232 of the flat plate portion 226 of the flange 222 is projected above the upper plane of the flange 196 of the heat collector body 180. As a result, the first protrusion 224 of the flange 220 is located below the second protrusion 227 of the flange 222, and these are in parallel with each other. Also, the first protrusion 2
24 and the second protrusion 227 are in a posture of extending outside the main body 180.

Upper part 232 of flange 222, flange 1
The glass plate support portion 233 is configured by the upper flat surface of 96, and the water guide plate holding portion 234 is configured by the first protrusion 224, the second protrusion 227, and the like. In the glass plate supporting portion 233, the glass plate 18 is placed on the upper plane of the flange 196 with the side portion of the cushion member 198 supported by the upper portion 232.
2 is placed via the cushion material 198. The glass plate 182 has a flange 222 through the cushion material 198.
Will be supported from below the roof slope.

The water guide plate 164 is made of a metal plate material, and the held end 236 having the folded portion is located between the first projection 224 and the second projection 227 of the water guide plate holding part 234. The roof member 24 is held in a gap and has the other end 240 such as a roof tile.
Although not shown, the held end 236 is held by the support member of the heat collector 19 and the other end 240 is the upper surface of the glass plate 182 of the heat collector 17. It is arranged so as to be located at.

The support 161 has a longitudinal shape, and has a notch 248 formed at one end in the longitudinal direction.
The notch 248 is formed with a length of several tens mm in the longitudinal direction. When the support 161 is installed on the waterproof sheet 153, one end of the support 161 where the cutout 248 is formed is located below the roof, and the cutout surface 250 faces the waterproof sheet 153. As a result, the notch surface 250 becomes higher than the other general lower surface of the support base 161, and a gap is formed between the notch surface 250 and the waterproof sheet 153, and this gap is used as the water guide plate holding portion 251. .

The water guide plate 166 is a plate member made of metal,
The one end portion 252 is held by the water guide plate holding portion 251, and the other end portion 254 is arranged so as to be located on the roof material 242.

As shown in FIG. 2, the floor plate 162 includes a first floor plate 270 and a second floor plate 272. First floor plate 2
The 70 and the second floor plate 272 have a U-shaped cross section having a bottom and both side walls, and the width of the bottom is wider than the width of the bottom of the heat collector body 80. The length M of the first floor plate 270 is the same as the length M of the heat collector body 180, and the length N of the second floor plate 272 is shorter than the length M. The width of the bottom portion of the second floor plate 272 is gradually reduced in the longitudinal direction,
The width of one end 274 of 72 is larger than the width of the first floor plate 270, and the width of the other end 276 is smaller than the width of the first floor plate 270. Thus, tapering the width of the second floor plate 272 is easier than tapering the width of the long first floor plate 270. In addition, the first floor plate 270, the second floor plate 2
Through holes 280 are formed at predetermined positions of 72, respectively.

The roof heat source / solar heat collector assembly includes a member for forming the groove 290. These members are a plurality of groove members 292, 294, a guide plate 29.
6, a mounting bracket 298 and the like. The groove members 292 and 294 are long members having a U-shaped cross section, and as shown in FIG. 5, the groove members 29 located above the roof on the support base 161.
4 are stacked and arranged so that the lower surface of the lower end portion of No. 4 is located above the upper surface of the upper end portion of the groove member 292 located below.
Therefore, the groove members 292 and 294 are slightly tapered in width at the bottom. The length of the groove 290 can be adjusted by changing the number of groove members or the overlapping amount.
As shown in FIG. 5, the guide plate 296 is a member having an L-shaped cross section, and includes a bottom portion 300 and a wall portion 302.
It is arranged at the lower end of the groove 290. Mounting bracket 2
98 (see FIG. 3) is a groove member 292, 294 and the heat collector 1
7 to 19 and the like are fixed to the support 161 and are members each having a bottom portion 304 and a side wall 306 and having an M-shaped cross section.

The above-mentioned tubes 24 and 25 connect the heat collectors 17 to 19 installed on the roof and the heat medium holding tank 16 installed indoors, and the heat collectors installed in the tube 24. The device circulation pump 26 moves the heat medium between the pipe 24, the heat collectors 17 to 19 and the pipe 25. Heat collector 1
The heat medium heated in 7 to 19 is moved by the operation of the heat collector circulation pump 26, and is collected in the heat medium holding tank 16. The pipe 24 is a heat collector 17,1.
8 is connected to the pipe 28, and the pipe 25 is connected to the connection portion 188 of the heat collector 19.

When packing the above-mentioned solar heat collector assembly, the first laying plate 270 is combined with the heat collector 17. The first floor plate 270 and the heat collector 17 are packed in a state in which the bottom of the heat collector body 180 is in contact with the bottom surface of the first floor plate 270. First floor plate 270 and collector body 18
With 0, the length is almost the same and the width is the first floor plate 270.
Since this is slightly larger than the bottom of the collector body 180, the first floor plate 270 and the collector body 180 can be packed together. Therefore, the first floor plate 270 can be transported while being prevented from being damaged without using a dedicated support material. The second floor plate 272 is packaged separately.

Next, a description will be given of a solar heat collecting device that also serves as a roofing material and is assembled from the above-mentioned solar heat collecting device component assembly. A waterproof sheet 153 is laid on the base plate 152, and a support 161 is fixed on the waterproof sheet 153 along the pitched roof, and the heat collectors 17 to 19 are fixed to the support 161. Heat collectors 17 to 19 and waterproof sheet 153
A floor plate 162 is laid between and.

The water guide plate holding portion 251 of the support base 161 includes:
One end 252 of the water guide plate 166 is held. When the one end 252 of the water guide plate 166 is moved along the waterproof sheet 153, the one end 252 is cut into the cutout surface 250 and the waterproof sheet 1.
It fits in the gap between 53. The water guide plate 166 is fixed by a fixing member such as a nail (not shown). In addition, water guide plate 1
The other end 254 of 66 is placed on the roofing material 242.

A base plate 162 is laid along the support base 161. The outer surface of each side wall of the first floor plate 270 and the second floor plate 272 is along the side surface of the support base 161, as shown in FIG. In FIG. 2, the difference between the widths is emphasized in order to clarify the relationship between the width of the bottom of the first floor 270 and the width of the bottom of the second floor 272. Since the one floor plate 270 and the second floor plate 272 are made of a thin metal plate material, the change amount of the width of the second floor plate 272 is small, and between the outer surfaces of both side walls and the side surface of the support base 161. Has almost no gap.

Further, in the first floor plate 270 and the second floor plate 272, as shown in FIG. 2, the lower surface of the lower end portion of the upper floor plate is placed on the upper surface of the upper edge portion of the lower floor plate. It is fitted. Since the bottom portion of the second floor plate 272 has a tapered shape, these adjacent end portions are fitted properly.

As shown on the left side of FIG. 2, if two first floor plates 270 and one second floor plate 272 are laid,
The total length of the floorboard is twice the length of the collector body 180 (2
M) longer. Further, as shown in the right part of the figure, if one first floor plate 270 and the second floor plate 272 are laid, the length of the entire floor plate becomes longer than the length M of the heat collector main body 180. . In other words, by arranging a plurality of base plates in an overlapping manner, it becomes the same as disposing one long base plate. Therefore, if the heat collectors 17 to 19 are installed in the overlapping portion of the floor plate 162, it is possible to provide the margin portions of the floor plate 162 above and below the heat collector body 180. Also,
The water on the floor plate 162 satisfactorily flows from the upper side to the lower side of the pitched roof, and water is prevented from entering between the floor plate 162 and the waterproof sheet 153. However, most of the water flows on the glass plate 182 and the groove 290, and only a small amount of water leaks on the floor plate 162 for some reason.

As shown in FIG. 6, the lower end of the floor plate 162 and the lower end of the support 161 are substantially aligned with each other. Therefore, the water guide plate 166 is attached to the water guide plate holding portion 251 of the support base 161.
If the one end 252 of the bottom plate 252 is held, the one end 252 is located below the floor plate 162, and the water on the floor plate 162 is guided onto the roof material 242 by the water guide plate 166.

As shown in FIG. 4, the connecting portion 1 of the heat collector 17 is
90 and the connecting portion 190 of the heat collector 18 are connected by a pipe 28, and the connecting portion 188 of the heat collector 17, the connecting portion 188 of the heat collector 18, and the connecting portion 190 of the heat collector 19 are connected by a pipe 310. ing. Further, the pipe 28 is the heat medium holding tank 1
6 is connected to the pipe 24, and the pipe 310 is connected to the pipe 25. These pipes 28 and 310 are the first floor plate 2
70, a through hole 280 formed in the second floor plate 272, and a through hole (not shown) formed in the base plate 152, and is drawn indoors. The tubes 24 and 25 are the tubes 2 indoors.
8, 310, and extends to the heat medium holding tank 16. Also, the area around the through hole 280 is caulked,
Water is prevented from entering between the through hole 280 and the pipe.

As described above, when the pipes 28 and 310 are to be installed indoors, it is easier to waterproof only the floor plate 162, the waterproof sheet 153, and the base plate 152 than the roof material 242. . This is because it is very difficult to form a hole having an accurate shape and size in the roof material 242, but it is easy to form an accurate hole in the floor plate 162. In addition, the pipes 28, 310 are connected to the floor plate 162,
In the case of piping through the base plate 152, the roof material 242, the water guide plate 164, and the like can be covered above the through holes 280, so that waterproofing can be further ensured.

On the other hand, a groove 290 is formed on the upper surface of the support base 161.
Is provided. The groove members 292 and 294 are arranged such that some of them overlap each other and are fixed by the mounting brackets 298 at appropriate positions. The mounting bracket 298 covers the groove members 292, 294, that is, the mounting bracket 29.
8 is located at the bottom of the groove members 292, 294, and both side walls 306 of the mounting bracket 298 are the first floor plate 27.
0, it is attached in a state of covering the side wall of the second floor plate 272. The mounting bracket 298 is provided on the side walls 306 on the support base 16
It is nailed to 1. The nail is inserted into through holes formed in both side walls 306, penetrates the side wall of the floor plate 162, and is driven into the support base 161. As a result, the support 161
Is covered with a metal plate.

A fixing leg fixing bolt 314 and a gap cover fixing bolt 316 are fixed to the bottom portion 304 of the mounting member 298 by welding in an upward direction. Bolt 314
Is shorter than the bolt 316. The fixed leg 206 can be fixed to the mounting bracket 298 by engaging the notch 208 of the fixed leg 206 with the fixed leg fixing bolt 314 and screwing the nut 318. The heat collector 17 is fixed to the support 161 by fixing the fixing legs 206 and 210 to the groove 290.

In the adjacent heat collectors 17 and 18, when fixing the fixed leg 206 of the heat collector 17 and the fixed leg 210 of the heat collector 18 to the groove 290, the fixed legs 206 and 210 are aligned with each other. If in position, these fixed legs 206, 2
10 by stacking or fixing the fixing legs 206, 210 to the groove 2
They must be arranged in the width direction of 90 and fixed by different bolts, or either method must be used. In the former case, in either one of the heat collectors 17 and 18,
The mounting height of the fixed leg is displaced by the thickness of the fixed leg, and the heat collector is inclined, or a gap is formed between the lower surface of the heat collector and the waterproof sheet 153. In the latter case, the width of the groove 290 must be widened. On the other hand, in the present embodiment, the mounting positions of the fixed leg 206 and the fixed leg 210 deviate from each other by more than the width of the fixed leg.
6, 210 do not interfere with each other, and there is no need to stack and fix them or widen the groove 290.

The bolt 316 is used for the adjacent heat collectors 17, 18
The gap cover 320 hung over the top is fixed. Also, a heat collector when only one heat collector is provided,
Alternatively, in the heat collector located at the end of the plurality of heat collectors, a gap cover is attached between the heat collector and a roof material such as a roof tile.

A guide plate 296 is fixed to the downstream end of the groove 290 as shown in FIG. Information board 296
Is fixed to the support base 161 in a posture in which the bottom plate 300 enters below the lower end portion of the groove member 292, and the side walls 302 obliquely face each other in the longitudinal direction of the groove 290. Rainwater flowing through the groove 290 is guided onto the floor plate 162 along the side wall 302 of the guide plate 296.

The water guide plate holding portion 234 of the support member 160 of the heat collector 17 has the held end 236 of the water guide plate 164.
Is held. When the held end 236 of the water guide plate 164 is moved along the first protrusion 224, the held end 236 is fitted into the water guide plate holding portion 234. The other end 240
Is placed on the roofing material 242, and the middle portion is fixed to the sill 322 passed between the lower ends of the adjacent support bases 161. The water that has flowed on the glass plate 182 is guided to the roof member 242 by the water guide plate 164.

In this solar heat collecting apparatus, the glass plate supporting portion 233 is composed of the upper portion 232 of the supporting member 160 and the flange 196 of the heat collector main body 180.
A pressing member that extends from the supporting member 160 onto the glass plate 182 and presses the glass plate 182 is not provided. This is to prevent the pressing portion from being bent up and broken by the snow mass when the snow mass accumulates and the snow mass slides down along the glass plate 182.

In the above solar heat collecting apparatus, the width of the second floor plate 272 is tapered, but the width of the first floor plate may be tapered, and both the first floor plate and the second floor plate may be tapered. The width may be tapered. When the widths of both the first floor plate and the second floor plate are tapered, as shown in FIG. 12, the second floor plate 324 has a width that can be fitted inside the wide portion of the first floor plate 326, Figure 1 when in use
As shown in FIG. 3, if the narrowest part of the first floor plate 326 is fitted inside the second floor plate 324, both floor plates 324 and 326 can be packed in the state of FIG. It is not necessary to package the second floor plate 324 separately from the heat collector body 180.

Further, when it is not planned to arrange the heat collectors in series in the vertical direction, the second floor plate may be arranged above or below the first floor plate, and in the longitudinal direction. There is no need to change the width. When placed above, the entire width of the second floor is narrower than that of the second floor so that it can fit inside the upper end of the first floor, and when placed below, the width of the entire second floor. Is wider than the first floor plate so that it can be fitted to the outside of the lower end portion of the first floor plate.
In either case, the first floor plate and the second floor plate can be stacked and packed.

Further, when the first floor plate and the second floor plate are made of a very thin plate material, one of them can be fitted inside the other even if they have the same width. In this case, the side wall of the outer floor plate is curved to the outside to some extent with the first and second floor plates fitted together, but such a degree of curvature is acceptable both during packaging and during use. When the boundary between the bottom of the floorboard and the side wall is rounded, the curvature of the side wall is particularly small.

The width of the glass plate 182 is equal to the width of the first floor plate 27.
If the width is slightly smaller than the bottom width of 0, the first floor plate 270
A glass plate 182 may be interposed between the heat collector main body 180 and the heat collector main body 180 for packaging.

Further, it is not essential to gradually reduce the width of the first floor plate or the second floor plate over the entire length. For example, as shown in FIG. 14, the second floor plate 350 is attached to the wide portion 3
It may be provided with 52 and a narrow portion 354. The wide portion 352 is fitted outside the lower end portion of the upper first floor plate 270, and the narrow portion 354 is fitted inside the upper end portion of the lower first floor plate 270.

Further, the support member is not limited to the mode of the above embodiment, but may be the mode shown in FIG. The support member 400 includes a first member 402 and a second member 404. The first member 402 has a body-fitting portion 406 having a U-shaped cross section, a protrusion 408 for supporting the lower end of the glass plate 182, and a second member support portion 412 having a female screw hole 410 formed in the middle portion. It is equipped with and.

The second member 404 includes a pressing portion 420 having a flat surface portion whose tip is bent downward, and the pressing portion 42.
On the side opposite to 0, the first protrusion 422 and the second protrusion 424
And a water guide plate holding portion 426 formed by. The length of the first protrusion 422 is longer than that of the second protrusion 424. Further, a through hole 430 is formed in the middle portion of the second member 404.

The first member 402 is fitted to the flange 196 of the heat collector body 180 at the body fitting portion 406.
The glass plate 182 is received through the cushion member 198 in the receiving portion formed by the upper flat surface of the main body fitting portion 406 and the protrusion 408, and the second member 404 is pressed from above. In that case, the female screw hole 410 of the first member 402 and the through hole 430 of the second member 404 are aligned so that the bolt 43 is
Fix at 2. As a result, the glass plate 182 is held by the upper flat surface of the main body fitting portion 406, the protrusion 408, and the pressing portion 420. The water guide plate 164 is held by the water guide plate holding portion 426, as in the above embodiment.

Further, in the support member of each of the solar heat collectors described above, the first protrusion having the longer length is positioned below, but the first protrusion is positioned above. May be.

Further, all of the pipes 28, 310 connecting the heat collectors 17 to 19 and the pipes 24, 25 connecting the heat collectors 17 to 19 and the heat medium holding tank 16 are connected indoors. Even if it does not need to be installed, a part may be piped outdoors. For example,
Pipes connecting the heat collectors 17 and 19 and the pipes 24, 2
It is possible to pipe a part of 5 above the floor plate 162 and the ground plate 152. When pulling the pipes piped outdoors, both the floor plate 162 and the ground plate 152 are penetrated. Alternatively, only the base plate 152 may be penetrated at a position separated from the floor plate 162. When the field plate 152 is penetrated at a position separated from the floor plate 162, it is desirable that the penetration part be covered with a roof material.

The operation of the first to third circulation systems of the solar heat utilization system of this embodiment will be described below with reference to FIG. In the control device 33, the circulation system operation control program and the inquiry operation control program are constantly and repeatedly executed.

In the circulation system operation control flowchart,
In S20, it is detected whether or not the heat medium amount lower limit switch 23 is in the OFF state. YES because the amount of heat medium is sufficient
If it is determined that the underfloor temperature thermostat 65 is ON, it is determined in S21. However, if the amount of the heat medium is too small and NO is determined, it is not executed after S21. In this case, the display 134 may display that the heat medium amount is too small.

If the underfloor temperature Tf is lower than the set temperature Th, S
If the determination in 21 is YES, in S22,
It is determined whether the current time is a time between a start time and an end time of the inquiry operation described later, that is, whether or not the execution of the inquiry operation is permitted. If the current time is daytime or the like and the time period during which the inquiry operation is permitted is determined to be YES, S23 and subsequent steps are executed, but during the time period when the inquiry operation is not permitted during the night time and the like. If there is, it is determined as NO, and S30 and subsequent steps are executed. Step S22 is a step for preventing the same operating state as the solar heating or the hot water supply from the solar heating during a time period such as nighttime when the inquiry operation is not executed. Since the heat medium temperature Tc is normally lower than the underfloor temperature Tf at night, the differential temperature thermostat 64 is hardly turned on, but the heat medium temperature Tc is higher than the underfloor temperature Tf by a first set value or more and turned on. There is no fear of getting into a state. In that case, the operating state is similar to that of solar heating, but there is almost no effect of floor heating. Also, it is better not to drive at night to prevent noise.

In S23 to 25, the differential temperature thermostats 64 and 111 are both turned on, and the parallel operation changeover switch 1
When 28 is turned ON, the determinations at all steps are YES. In addition, when the underfloor temperature Tf is lower than the set temperature Th as described above, in most cases,
Since the tank upper temperature Tm never exceeds the set temperature Tmax, the determination in S26 also becomes YES,
In S27, the first circulation system and the second circulation system are activated. The indicator 1 indicates that the heat collector circulation pump 26, the floor heater circulation pump 38, and the heat exchanger circulation pump 48 are driven to simultaneously perform solar heating and solar hot water supply.
It is displayed on 34. When the parallel operation is performed, the temperature of the heat medium supplied to the heat collectors 17 to 19 becomes low, so that the thermal efficiency can be improved.

On the other hand, the parallel operation changeover switch 128 is turned off.
Even if N, if the heat medium temperature Tc is not higher than the hot water temperature Tt by the set value or more, NO is determined in S25, and only solar heating is performed and solar hot water supply is not performed in S28. This is because the solar hot water cannot be effectively supplied. The parallel operation changeover switch 128 is OF
In the case of F, NO is determined in S24, and even if the heat medium temperature Tc is higher than the hot water temperature Tt by the set value or more,
Solar hot water is not provided. This is because when the solar hot water is supplied, the temperature of the heat medium is reduced by that amount, so that the concrete layer 56 cannot be sufficiently warmed. That is, floor heating is preferentially performed. User stores heat storage floor 5
If it is desired to give priority to overheating of No. 6, the parallel operation changeover switch 128 may be turned off.

When the upper temperature thermostat 112 is in the OFF state, the determination result of S26 is NO and S2 is reached.
At 9 all circulatory systems are deactivated. In other words, if there is a pump or the like in operation, it can be stopped immediately. This stopped state is continued until 24 o'clock has passed in S14 of the flowchart of FIG. However, it is rare in Japan that the tank upper temperature Tm becomes equal to or higher than the set value Tmax when floor heating needs to be positively performed. It is provided for your safety.
It also has the effect of preventing boiling of the heat medium and performance deterioration.

On the other hand, when the current time is a time period during which the inquiry operation is not permitted, or even during the inquiry operation is permitted, the difference between the heat medium temperature Tc and the underfloor temperature Tf is small. Differential temperature thermostat 64 is O
In the case of FF, that is, when the determination in S23 is NO, or when the determination in S22 is YES and the determination in S23 is NO, S30 and subsequent steps are executed. In S30,
Whether the underfloor temperature Tf is lower than a set value (here, since the switch S is turned ON in the underfloor temperature thermostat 65, whether the underfloor temperature Tf is lower than a set temperature Te that requires auxiliary heating), That is, it is determined whether the underfloor temperature thermostat 65 is in the ON state. If the determination result is YES, in S31, which of the modes A to C is selected by the auxiliary heating mode selection switch 130 is detected.

If the mode A is selected, the auxiliary heating is performed in S32 and the fact is displayed on the display 134. The boiler 52 is operated, the floor heater circulation pump 38 and the boiler circulation pump 54 are activated, and the heat medium heated by the boiler 52 is transferred to the floor heater 1
It is circulated to 2. If Mode B is selected, S
At 33, it is determined whether the current time is within the set time. If it is within the set time, auxiliary heating is performed in S32, and if it is not within the set time, auxiliary heating is not performed. If mode C is selected, auxiliary heating is not performed.

If the underfloor temperature Tf is equal to or higher than the set temperature Te and the underfloor temperature thermostat 65 is in the OFF state, S3
The determination at 0 becomes NO, and S27, S28 and S
One execution of the program is completed without executing any of 32, and neither the first circulation system nor the third circulation system is operated. When the differential temperature thermostat 64 is in the OFF state, even if the underfloor temperature Tf is lower than the set value Th, the set value Te is set.
If it is higher, neither solar heating nor auxiliary heating will occur.

Thus, if the auxiliary heating mode can be selected by operating the auxiliary heating mode selection switch 130, the auxiliary heating is automatically performed according to the user's preference. For example, if the user prefers a warm state, mode A may be selected. When the underfloor temperature Tf becomes lower than the set value Te, the auxiliary heating is always performed, and the room temperature can be kept high. Only when the user has set time such as breakfast before sunrise time, after dinner, etc.
If you want it to be warm, select Mode B,
The time should be set. Auxiliary heating is performed and the room temperature is raised only when the underfloor temperature is low within the set time. Therefore, unnecessary auxiliary heating is not performed, and energy can be saved. Further, if mode C is selected when leaving the vehicle, energy saving can be achieved because unnecessary auxiliary heating is not performed, and safety is improved.

As described above, the underfloor temperature Tf is equal to the set temperature T
If the auxiliary heating mode A or B is selected at e or less, the auxiliary heating is performed, but if the temperature exceeds the set temperature Te, the auxiliary heating is ended. After that, when the underfloor temperature Tf is a temperature between the set temperatures Te and Th and the differential temperature thermostat 64 is in the ON state, the solar heating is performed. For example, when the auxiliary heating is performed before the sunrise time and the auxiliary heating is ended because the underfloor temperature Tf becomes equal to or higher than the set temperature Te, the temperature of the heat medium in the heat collectors 17 to 19 immediately rises after sunrise. If it is made possible, it becomes possible to perform floor heating by the heat medium, and the solar heat can be effectively utilized accordingly.

When the underfloor temperature thermostat 65 is in the OFF state and it is judged NO in S21, S34
At, similarly to the determination at S22, it is determined whether or not the current time is within the time zone during which the inquiry operation is permitted. If it is within the time period during which the inquiry operation is allowed, it is determined to be YES, and in S35, it is determined whether or not the differential temperature thermostat 110 is in the ON state. That is, the difference between the heat medium temperature Tc and the hot water temperature Tt is equal to or larger than the first set value, and it is determined whether or not the hot water supply to the solar is effective. If YES is determined in S35, it is determined in S36 whether the upper temperature thermostat 112 is in the ON state. If the tank upper temperature Tm is lower than the set value Tmax and the determination is YES, solar hot water supply is performed in S37. The heat collector circulation pump 26 and the heat exchanger circulation pump 48 are driven,
This is displayed on the display device 134.

If the determination in S34 is NO, or if S
If the determination in S34 is YES but the determination in S35 is NO, it means that it is determined that the solar hot water supply is not effective, so that the solar hot water supply is not performed. In this case, since the underfloor temperature Tf is also higher than the set value Th, solar heating is not performed.

Next, the inquiry operation will be described.
The inquiry operation is performed as shown in FIG. From the set start time Hs to the end time He, the heat collector circulation pump 26 is continuously driven at the set time Ta at predetermined time intervals Ti (interval time, 15 minutes in this embodiment). Is done. This start time Hs
The end time He and the set time Ta are automatically determined by the inquiry operation control computer 120.

The start time Hs is 2 more than the earliest time in the past five data of the time when the operation of the first circulation system or the second circulation system is started by the inquiry operation.
The time is set to 0 minutes (15 to 30 minutes) earlier. That is, by the inquiry operation, the differential temperature thermostats 64, 11
The time when at least one of 0 is switched to the ON state is stored, and the time 20 minutes earlier than that time is determined as the start time Hs. Generally, the earlier the sunrise time, the earlier the start time. Alternatively, the time may be set 30 minutes earlier.

The end time He is the time when the operation of the first circulation system or the second circulation system is completed, that is, the differential temperature thermostats 64 and 110 are switched from the ON state to the OFF state, and then are not switched to the ON state. It is set as a time 10 minutes later than the latest time of the data of the past 5 times. The end time He generally changes with the change of sunset time.

As described above, according to the inquiry driving operation condition setting computer 120, the start time Hs and the end time He are determined according to the sunrise time and the sunset time which change with the season, so that the inquiry operation is wasted. It becomes possible without it.

The above is a description of the case where the solar heat collectors 17 to 19 are installed in a place where there is no obstruction to the sunlight, but when installed in a place where there is an obstruction to the sun, the start time Hs and end The time He is set depending on the time when the sunlight is not blocked and the time when the sunlight is blocked. Further, even when the installation directions of the solar heat collectors 17 to 19 are limited and installation is not possible in the most efficient direction, the start time Hs and the end time He are not always determined by the sunrise time and the sunset time. However, in any case, the inquiry operation can be performed without waste.

When the summer solstice is headed, the start time is 30 minutes earlier and the end time is 20 minutes later than the past data, and when the winter solstice is headed, the start time and the end time are past. It is also possible to set the start time and end time according to the season, such as leaving the data as it is.

The set time Ta is the pipe 25 between the heat collectors 17 to 19 and the position where the heat medium temperature sensor 32 is attached.
It is determined by the length of (generally, the heat medium passage), the moving speed of the heat medium in the pipe 25 between them (the discharge capacity of the heat collector circulation pump 26), and the like. However, since it is troublesome to accurately check these values, in the present embodiment, the set time Ta is automatically determined based on the principle shown in the graph of FIG. While the heat collector circulation pump 26 is not driven, the detection value of the heat medium temperature sensor 32 is constant. When the heat collector circulation pump 26 is activated, the heat medium in the heat collectors 17 to 19 is moved and supplied to the heat medium temperature sensor 32 via the pipe 25. As a result, the temperature detected by the heat medium temperature sensor 32 is raised and eventually becomes a constant value. Further, when the driving is continued, all the heat medium that has been warmed in the stopped state into the heat collectors 17 to 19 is discharged, and the warmed heat medium is supplied while flowing in the heat collectors 17 to 19. Therefore, the detected temperature decreases.

Therefore, the set time Ta is the data of the past five times of the time Tx from the start of driving the heat collector circulation pump 26 until the rate of change of the temperature detected by the heat medium temperature sensor 32 becomes equal to or less than the set value. The time is determined by adding a fixed value (for example, 5 seconds) to the maximum value. Further, the set time Ta is determined within a range that does not exceed a predetermined upper limit value Ta 'in order to avoid erroneous setting for some reason. As described above, if the time for continuously operating the heat collector circulation pump 26 is automatically set based on the time until the detected temperature becomes close to a constant value, there is no trouble, and the first or second Whether or not the bi-circulation system should be operated is accurately determined. Further, it is possible to avoid the inquiry operation from being performed unnecessarily for a long time, and an energy saving effect can be obtained.

Next, the execution of the inquiry operation will be described with reference to FIG. First, in S51, it is determined whether or not the inquiry operation mode is set. If the step of S51 is first executed, it is not set, and thus it is determined to be NO, and in S52, as shown in FIG.
It is determined whether or not the current time H (n) at is Hs + Ti × n. When the step of S52 is first executed, the value of the number of times n is 0 as described later,
It will be determined whether the current time H (0) is the start time Hs. If the start time Hs has come, it is determined to be YES.

Next, in S53, it is determined whether or not the upper temperature thermostat 112 is in the ON state. Since it is in the ON state in most cases at the beginning of the start time, YES is determined. In S54, it is determined whether or not the current time is the end time He, but since the end time He is not reached at first, it is NO.
Is determined, the inquiry operation mode is set in S55, the timer is started, and the number of times n is incremented. In S56, it is determined whether the heat collector circulation pump 26 is already operating. At first, it was judged to be NO because it was naturally inoperative,
In S57, the heat collector circulation pump 26 is operated.

When the inquiry operation mode is set, YES is determined in S51 and S
At 58, it is determined whether the set time Ta has elapsed. Not passed, and the upper temperature thermostat 11
When 2 is in the ON state, the operation of the heat collector circulation pump 26 is continued, but the upper temperature thermostat 112 is O
In the FF state, in S60 and 61, the operation of the heat collector circulation pump 26 is stopped, and the inquiry operation mode is reset. If the elapsed time Ta has elapsed when S58 is executed, it is determined in S62 whether or not solar heating or solar hot water supply is being performed. If so, the operation of the heat collector circulation pump 26 is continued. However, when neither the solar heating nor the solar hot water supply is performed, the operation of the heat collector circulation pump 26 is stopped and the inquiry operation mode is reset.

On the other hand, this routine is executed at time T in FIG.
If executed during b, NO is determined in S52, and the heat collector circulation pump 26 is not operated. In this routine, the inquiry operation is started when the current time H (n) reaches the start time Hs, the heat collector circulation pump 26 is operated for the set time Ta, and thereafter, the heat collector circulation pump 26 is set for each fixed time Ti. Since the heat collector circulation pump 26 is operated for each time Ta, the automatic intermittent operation of the heat collector circulation pump 26 is executed until the end time He of the current time H (n). If the current time H (n) reaches the end time He, N is returned in S54.
It is determined to be O, and the number of times n is set to 0 in S63.
In addition, during the operation of the first circulation system or the second circulation system, S5
When 6 is executed, the heat collector circulation pump 26 is maintained in the operating state.

In the inquiry operation control program, only the heat collector circulation pump 26 is controlled. When the floor heater circulation pump 38 and the heat exchanger circulation pump 48 are driven at the same time when the heat collector circulation pump 26 is activated, the heat medium temperature T
This is because, when c is low, the temperature inside the concrete layer 50 or the hot water supply tank 14 may be lowered. Further, when the upper temperature thermostat 112 is in the OFF state, not only the operation of the first to third circulation systems but also the inquiry operation is not performed.

As described above, according to the solar heat utilization system of this embodiment, the operating conditions of the first circulation system to the third circulation system are set according to the individual use conditions of the solar heat utilization system. It is possible to effectively utilize solar heat. Further, the switching between the state in which only the first circulation system can operate and the state in which both the first circulation system and the second circulation system can operate can be performed by operating the parallel operation changeover switch 128 according to the preference of the user. Since they can be switched, floor heating can be preferentially performed according to the preference of the user. further,
Since the operating condition of the inquiry operation is controlled based on the operating condition of the solar heat utilization system, wasteful operation of the heat collector circulation pump 26 can be reduced, and an energy saving effect can be obtained. In addition, since the selection of the auxiliary heating mode can be selected by operating the auxiliary heating mode selection switch 130 and the auxiliary heating allowable time zone can also be set by the user, the auxiliary heating can be set according to the user's preference or the like. Therefore, it is possible to prevent unnecessary operation of the boiler 52, and an energy saving effect can be obtained.

Further, when the upper temperature Tm of the hot water supply tank 14 becomes higher than the set value Tmax, the operation of the entire system is prohibited, so that the heat collectors 17-
It is possible to extend the life of the solar heat collector 10 such as 19 and the tubes 24, 25, 28, 310.

Further, in the inquiry operation, the operation of the heat collector circulation pump 26 is intermittently continued for the set time, and the set time Ta in this case is determined from the past data based on the program. Therefore, since it changes with a decrease in the discharge capacity of the heat collector circulation pump 26, the heat medium temperature sensor 32 can properly detect the heat medium temperatures in the heat collectors 17 to 19. Therefore, malfunction is avoided and the heat collector circulation pump 2
The useless operation of 6 can be omitted.

Further, there is an advantage that the designer or the user does not need to input the set time even when the solar heat utilization system is initially installed. The set time is determined based on the length of the tube 25 between the heat collector 19 and the heat medium temperature sensor 32, the moving speed of the heat medium, and the like, but the determination of the set time Ta is troublesome.

Further, since the start time Hs and the end time He are set according to the change of the sunshine time zone due to the change of the season, the inquiry operation can be performed without waste.
Further, the time when the heat medium in the heat collectors 17 to 19 is heated by the solar radiation is not limited to the change in the season, but the heat collectors 17 to 19 are heated.
Depending on the direction in which 19 is installed and the surrounding environment,
In the solar heat utilization system of the present embodiment, the inquiry operation start time is set based on the operation start times of the past five times, so that the radiant heat from the sun can be used immediately after sunrise. Similarly, if the solar heat cannot be used after sunset, the inquiring operation is terminated, so that wasteful operation is avoided and an energy saving effect is obtained.

As described above, in this embodiment, the inquiry operation condition setting computer 120, the parallel operation changeover switch 128, and the auxiliary heating mode selection switch 13 are used.
0, the time / temperature input section 132 and the like constitute the operating condition setting means, and the parallel operation changeover switch 128 constitutes the state changing means. Further, the inquiry operation condition setting computer 120 constitutes heat collector pump operation condition setting means. Further, the auxiliary heating mode selection switch 130 constitutes a third circulation system operation state switching means, and the time / temperature input section 132 constitutes an operation allowable time setting means.

In the above embodiment, switching between the first state in which operation of only the first circulation system is permitted and the second state in which operation of both the first circulation system and the second circulation system is permitted. However, when the underfloor temperature Tf or the heat medium temperature Tc is less than or equal to the set value, the first state is automatically set, or the heat medium temperature Tc and the underfloor temperature Tf are set. It may be automatically set based on various conditions such that the first state is automatically set when the difference between and is less than or equal to the set value.

Further, in the above-described embodiment, steps 22 and 34 are provided so as not to be in the same operating state as the solar heating and the solar hot water supply during the time period when the inquiry operation is not executed, such as at night. Steps are not always essential.

Further, in the above embodiment, the set time Ta, the start time Hs, the end time He and the like in the inquiry operation are set on the basis of the data of the past five times, but not limited to five times. You may make it set based on the data of other times. Generally 3-10
It is desirable to set based on the data of the times. Also,
Set time Ta and start time Hs in the inquiry operation,
The end time He may be manually set by the user or the system installer.

Further, in the above embodiment, the user can set the set temperature Th for performing the solar heating, the set temperature Te for performing the auxiliary heating, the auxiliary heating allowable set time in the auxiliary heating mode B, and the like. However, it is not necessary to set all of them, but only a part of them may be set.

In the above embodiment, the upper temperature T
After m once exceeded the set value Tmax, the operation of the entire system was stopped until 24:00, but as shown in FIG. 22, it should be stopped until the set time elapses. Alternatively, as shown in FIG. 23, it may be stopped until the upper temperature Tm is sufficiently lowered. In the former case, the set time can be set to 8 hours, for example. Since the upper temperature Tm becomes higher than the set value Tmax at the time when the sun altitude is considerably high, the heat collector is sufficiently cooled in Japan if left for 8 hours. In the latter case, for example, the upper temperature Tm
Can be started when the temperature drops by 10 ° C.

In the above embodiment, the thermostats 65 and 112 and the differential temperature thermostats 64 and 11 are used.
0, 111, etc. were provided, but this is not essential. The output signal of each temperature sensor may be connected to the input part of the control device 33 so that the computer of the control device 33 or the like can perform the function of each thermostat. On the other hand, the differential temperature thermostat 111 is
The switching may be performed based on the difference between the underfloor temperature and the hot water temperature.

Further, in the above embodiment, the control of the first circulation system is performed by the heat collector circulation pump 26 as the first circulation means.
However, the control of the heat collector circulation pump 26 and the control of the heat collectors 17 to 19 may be performed. Heat collector 17 ~
The control of 19 means, for example, a state in which the heat medium is circulated in all of the heat collectors 17 to 19 and a state in which the heat medium is circulated in only one or two of the heat collectors 17 to 19. It is a control to switch to. Further, in the above embodiment, the heat storage body is the concrete layer 56 and the radiator is the floor heater 12. However, for example, the radiator may be installed indoors or inside a wall. Good.

Further, in the above embodiment, the control of the circulation system and the inquiry operation are performed based on the program shown in the flow charts of FIGS. 18 and 19, but the control of the circulation system is performed as shown in FIG. The inquiry operation may be performed based on the map shown in FIG. 27 and based on the program shown in the flowchart of FIG. 29.

As shown in FIGS. 26 and 27, the respective thermostats 65 and 112, the differential temperature thermostat 64,
The states of 110, 111, the parallel operation changeover switch 128, and the auxiliary heating mode selection switch 130 are detected in parallel, and solar heating, solar hot water supply, parallel operation, etc. are performed based on the detection results. For example, when the upper temperature thermostat 112 is in the OFF state, the operation of the circulation system is prohibited regardless of the states of other thermostats and the like. Also, the underfloor temperature thermostat 65 is OF
Even in the F state, when the differential temperature thermostat 110 is in the ON state and the upper temperature thermostat 112 is in the ON state, the solar hot water supply is performed. As described above, in this embodiment, the states of the respective thermostats and the like are detected in parallel.

The inquiry operation may be performed when a predetermined operating condition is satisfied as shown in the flowchart of FIG. The operating conditions in this case are shown in the table of FIG. That is, the upper temperature T
When H is in the ON state, the current time is as shown in FIG.
At each start time shown in (4), the heat collector circulation pump 28 is driven.

The solar heat utilization system in the above embodiment is not limited to the mode shown in FIG. 1, but may be the mode shown in FIG. In the solar heat utilization system of FIG. 24,
Tube 36 and tube 5 in the solar heat utilization system of the above embodiment
1 shares the pipe 500, and the boiler circulation pump 54 is not attached. Instead, a pipe 500 and valves 502 and 504 are attached in the middle of the pipe 51. When the valve 502 is closed and the valve 504 is opened to drive the floor heater circulation pump 38, the heat medium heated by the boiler 52 is directly supplied to the floor heater 12. If the valve 502 is opened, the valve 504 is closed, and the heat collector circulation pump 26 and the floor heater circulation pump 38 are driven, the first circulation path is circulated.

Furthermore, the embodiment shown in FIG. 25 can be adopted. In FIG. 25, a three-way switching valve 512 is provided at the branch position of the pipes 36, 51 and 510. Three-way switching valve 5
When 12 is in the position shown, the pipe 34 and the pipe 51 are communicated with each other, and the boiler 52 and the floor heater 12 are communicated with each other. When the floor heater circulation pump 38 is driven and the boiler 52 is operated, the floor heater 12 is connected to the boiler 52.
The heating medium heated by is supplied and auxiliary heating is performed. When the three-way switching valve 512 is rotated 90 degrees clockwise, the pipe 36 is brought into communication with the pipe 510. When the heat collector circulation pump 26 and the floor heater circulation pump 38 are driven, solar hot water is supplied.

Although not specifically exemplified, the present invention can be carried out in variously modified and improved modes based on the knowledge of those skilled in the art without departing from the scope of the claims.

[Brief description of drawings]

FIG. 1 is a system diagram of a solar heat utilization system that is an embodiment of the present invention.

FIG. 2 is a plan view showing a floor plate of a solar heat collecting device that also serves as a roof material of the solar heat utilization system.

FIG. 3 is a cross-sectional view showing a heat collector of the solar heat collector also serving as the roof material.

FIG. 4 is a plan view of the heat collector.

FIG. 5 is a perspective view showing the periphery of a groove formed on a support base of the solar heat collecting apparatus that also serves as a roof material.

FIG. 6 is a cross-sectional view showing a supporting member of the solar heat collecting apparatus that also serves as the roof material.

FIG. 7 is a sectional view of a floor heater of the solar heat utilization system.

FIG. 8 is a circuit diagram showing a thermostat attached to the floor heater.

FIG. 9 is a diagram showing temperature characteristics of a sensor unit of the thermostat.

FIG. 10 is a diagram showing an operating state of each thermostat in the solar heat utilization system.

FIG. 11 is a diagram showing a selected position and a state of an auxiliary heating mode switch in the solar heat utilization system.

FIG. 12 is a plan view showing a fitted state at the time of packaging of a floor plate of a solar heat collector also serving as a roof material in another example of the present invention.

FIG. 13 is a plan view showing a fitted state when the floor plate of FIG. 12 is used.

FIG. 14 is a plan view showing a floor plate of a solar heat collector also serving as a roof material according to still another embodiment of the present invention.

FIG. 15 is a cross-sectional view showing a supporting member of a solar heat collecting device which also serves as a roofing material according to still another embodiment of the present invention.

16 is a flowchart showing a computer stored in a ROM of a control unit of the underfloor temperature thermostat of the solar heat utilization system of FIG.

17 is a flow chart showing a program stored in a ROM of a control unit of the upper temperature thermostat of the solar heat utilization system of FIG.

18 is a flowchart showing a program stored in a ROM of the circulation system operation control computer of the solar heat utilization system of FIG.

19 is a flow chart showing a program stored in a ROM of the inquiry operation control computer of the solar heat utilization system of FIG.

20 is a diagram showing inquiring operation operating conditions set according to a program stored in a ROM of a computer of the solar heat utilization system in FIG.

FIG. 21 is a set time T according to a program stored in the ROM of the inquiry operation condition setting computer.
It is a figure for demonstrating determination of a.

FIG. 22 is a flowchart showing a program stored in the ROM of the control unit of the underfloor temperature thermostat in the solar heat utilization system of another embodiment of the present invention.

FIG. 23 is a flowchart showing a program stored in the ROM of the control unit of the upper temperature thermostat in the solar heat utilization system.

FIG. 24 is a system diagram of a solar heat utilization system according to another embodiment of the present invention.

FIG. 25 is a system diagram of a solar heat utilization system according to still another embodiment of the present invention.

FIG. 26 is a diagram showing a table stored in the ROM of the circulation system operation control computer of the solar heat utilization system of yet another embodiment of the present invention.

FIG. 27 is a diagram showing a table stored in a ROM of a circulation system operation control computer of the solar heat utilization system.

FIG. 28 is a diagram showing a table stored in the ROM of the inquiry operation control computer of the solar heat utilization system of yet another embodiment of the present invention.

FIG. 29 is a flow chart showing a program stored in the ROM of the inquiry operation control computer of the solar heat utilization system of yet another embodiment of the present invention.

[Explanation of symbols] 10 solar heat collector 12 floor heater 14 hot water supply tank 16 heat medium holding tank 26 heat collector circulation pump 32 heat medium temperature sensor 33 controller 38 floor heater circulation pump 48 heat exchanger circulation pump 52 boiler 54 Boiler circulation pump 62 Underfloor temperature sensor 64 Differential temperature thermostat 65 Underfloor temperature thermostat 108 Hot water temperature sensor 110 Differential temperature thermostat 116 Circulation system operation control computer 118 Inquiry operation control computer 120 Inquiry operation operation condition setting computer 128 Parallel operation changeover switch 130 Auxiliary heating Mode selection switch 132 hours / temperature input section

Claims (4)

[Claims] 1. A collector for heating a heat medium with solar heat,
A heat radiator having a heat storage body heated by the heat medium, and a first circulation system including a first circulation means for circulating the heat medium in a first circulation path including the heat collector and the heat radiator in series, (2) The heat collector, a heat exchanger for warming the water in the hot water supply tank with the heat medium, and a second circulation circuit for circulating the heat medium in a second circulation path including the heat collector and the heat exchanger in series In a solar heat utilization system including at least one of a second circulation system including a circulation means, operating conditions of at least one of the first circulation system and the second circulation system are usage conditions specific to individual solar heat utilization systems. A solar heat utilization system, characterized in that it is provided with an operating condition setting means for setting in accordance with. 2. A first state in which both the first circulation system and the second circulation system are provided, and the operating condition setting means is in a first state in which only the first circulation system can operate, and the first circulation system and the second circulation system. The solar heat utilization system according to claim 1, further comprising a state switching means for switching between a second state in which both the circulation system and the second system can operate. 3. At least one heat collector circulation pump that causes the heat medium to flow in an outflow passage from the heat collector of at least one circulation passage of the first circulation passage and the second circulation passage, and A heat medium temperature sensor provided in the middle of the outflow passage to detect the temperature of the heat medium, the operating condition setting means, a fixed time when operating the heat collector circulation pump intermittently for a fixed time, The solar heat utilization system according to claim 1 or 2, further comprising heat collector circulation pump operating condition setting means for setting at least one of a start time and an end time of the intermittent operation. 4. A third circulation means for circulating the heat medium in a third circulation path including the heat storage body, an auxiliary heat source device for heating the heat medium of the heat storage body, and the heat storage medium and the auxiliary heat source device in series. And a third state in which the operation condition setting means includes (a) a first state in which the operation of the third circulation system is always permitted, and a second state in which the third circulation system is permitted within a preset time. Third circulation system operating state switching means for switching between and,
4. The solar heat utilization system according to claim 1, further comprising at least one of (b) an operation permissible time setting means for setting a time during which the operation of the third circulation system is allowed.