JP5525853B2 - Solar heat source equipment - Google Patents

Description

  The present invention relates to a solar heat utilization heat source device including a heat collector that collects the heat of sunlight.

  In recent years, as shown in FIG. 9, a solar heat utilization heat source device (solar heat utilization hot water storage type heat source device) 1 including a heat collector (collector) 13 that collects the heat of sunlight has been used (for example, Patent Document 1). ,reference). In the solar heat utilization heat source device 1, the heat collector 13 is interposed in the liquid circulation passage 3 that circulates the liquid, and the heat collector 13 uses the heat of sunlight to circulate the liquid that circulates in the liquid circulation passage 3 by driving the pump 5. It is composed of heating. The heat collector 13 is formed with an internal passage through which, for example, liquid passes. The heat collector 1 heats the liquid passing through the inside of the heat collector 13 (for example, the internal passage) by the heat of sunlight received by the light receiving surface. Then, the liquid circulating through the liquid circulation passage 3 is heated.

  The liquid circulation passage 3 is thermally connected to a hot water storage tank 14 for storing hot water introduced to a hot water supply destination. A water supply passage 19 is connected to the lower side of the hot water storage tank 14, and the water supply passage 19 is provided with an incoming water temperature detecting means 44 for detecting the incoming water temperature to the hot water storage tank 14. Further, a hot water supply passage 23 is connected to the upper side of the hot water storage tank 14, and the hot water supply passage 23 has a hot water temperature detecting means 46 for detecting the temperature of hot water (water) discharged from the hot water storage tank 14, and hot water storage. A flow rate detecting means 45 for detecting the flow rate of hot water (water) discharged from the tank 14 is provided. An auxiliary heat source device 15 is connected to the hot water supply passage 23, and is connected to a hot water supply destination such as a kitchen or a bathroom via the auxiliary heat source device 15.

  In such a solar heat utilization heat source device 1, since hot water heated using sunlight can be used for hot water supply, energy saving (energy saving) is possible, and furthermore, carbon dioxide emissions can be reduced. A friendly system can be realized. In addition, when using the solar heat source device 1, measure and display “how much natural energy has been used, whether fossil fuel consumption has been reduced, or whether environmentally friendly (eco-friendly) living behavior has been achieved”. It is expected that consumers will become more aware of energy conservation.

  It should be noted that when the environmental value such as the green energy certificate is reduced, it is necessary to measure the environmental value. For the measurement, as shown in FIG. It is indispensable to provide a solar heat utilization heat source device. The integrated calorimeter 47 is connected to the incoming water temperature detecting means 44, the flow rate detecting means 45, and the hot water temperature detecting means 46, and the incoming water temperature detecting means 44 is detected from the detected temperature detected by the hot water temperature detecting means 46. The amount of heat used by solar heat is obtained by the product of the value obtained by subtracting the detected temperature detected by the flow rate and the flow rate detected by the flow rate detection means 45.

JP 2003-194358 A

  However, the integrated calorimeter 47 as described above is an element part that is not necessary for the solar heat utilization heat source device 1 and is expensive. Therefore, when the integrated heat calorimeter is provided in the solar heat utilization heat source device 1, the large size of the device is large. There has been a problem that cost and cost increase will occur, leading to a decline in merchantability.

  Further, since the volume of the liquid in the liquid circulation passage 3 is expanded or contracted according to the temperature, the cistern device 50 is interposed in the liquid circulation passage 3 as shown in FIG. Although it is provided, the cistern apparatus 50 is provided with an atmosphere opening portion 6 so as to cope with the volume change of the liquid, and Legionella bacteria and the like may be mixed from the atmosphere opening portion 6. For this reason, a solar heat utilization heat source device 1 is proposed in which a configuration in which liquid passing through the liquid circulation passage 3 is forcibly heated by the auxiliary heat source device 15 is proposed. When the liquid in the liquid circulation passage 3 is heated by the device 15, the integrated calorimeter 47 cannot use the solar heat, although the amount of heat obtained by the heating is not the amount of heat using the solar heat. There is also a problem that the amount of heat is accumulated and the amount of heat used by solar heat cannot be obtained accurately.

  Further, in an area where water supplied to the hot water storage tank 14 or water in the hot water storage tank 14 may freeze due to low temperatures in winter, in order to prevent this freezing, a water supply passage 19 to the hot water storage tank 14 is provided. A heater is wound around the hot water storage tank 14 and the heater is operated when the temperature is low to perform the freeze prevention operation. When the freeze prevention operation is performed in such a configuration, the water in the hot water storage tank 14 is discharged. It will be heated. Although the calorie | heat amount obtained by the heating is not a solar heat utilization calorie | heat amount, the integrating | accumulating calorimeter 47 accumulates as a solar heat utilization calorie | heat amount without distinguishing the calorie | heat amount, and cannot calculate | require solar heat utilization calorie | heat amount correctly. There was also a problem.

  Furthermore, since the integrated calorimeter 47 has a life cycle different from that of the solar heat utilization heat source device 1, it is necessary to perform maintenance separately, and the integral calorimeter 47 has an expiration date of 8 years. When installing the equipment for home use, if granting a subsidy subject to Green Energy Certificate, it is necessary to use a solar heat source device for 10 years, so if the cumulative calorimeter 47 fails in 8 years Therefore, at least for the next two years, the calorimeter 47 must be repaired so that it can be used or replaced in some cases, and a heavy burden on the home or the like is expected.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a solar heat utilization heat source apparatus that can accurately determine the amount of heat utilized by solar heat without causing an increase in size and cost of the apparatus. There is.

In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, in the first invention, a heat collector that collects the heat of sunlight is interposed in a liquid circulation passage that circulates the liquid, and the heat collector collects the liquid that circulates through the liquid circulation passage by the heat of sunlight. The liquid circulation passage is configured to heat, and the liquid circulation passage is thermally connected to a hot water storage tank for storing hot water led to a hot water supply destination, and detects the temperature of the hot water discharged from the hot water storage tank. And hot water temperature detecting means in the hot water tank for detecting the temperature of hot water stored in the hot water tank, and the hot water temperature detecting means in the hot water tank detects the temperature of hot water at a plurality of locations in the hot water tank. form a unit,該貯tundish molten steel reference temperature setting hand stage specified as the reference temperature the entire hot water temperature of the water temperature the hot water storage tank according to the setting method is previously determined based on the detected value detected by the detection means provided is in, the said reference temperature setting means the hot water of the plurality of locations The average value of the detected temperature value is configured to be set as a reference temperature, said each time hot water of the hot water of the hot water storage tank is performed, a value obtained by subtracting the reference temperature from the detected temperature detected by the hot water hot water temperature detecting means hot water storage The solar heat utilization heat amount per hot water supply is obtained by the product of the flow rate of hot water discharged from the tank, and the solar heat utilization heat amount is calculated by adding the solar heat utilization heat amount per hot water supply in a predetermined solar heat utilization heat amount calculation setting period. A configuration having solar heat utilization heat amount calculation means for obtaining the solar heat utilization heat amount of the hot water supply performed during the heat amount calculation setting period is a means for solving the problem.

Further, in the second invention, in addition to the configuration of the first invention, the solar heat utilization heat amount calculation setting period is one day, and the reference temperature setting means is a hot water temperature detection means in the hot water tank at a predetermined set time before sunrise. The reference temperature is determined based on the detected value.

Further, in the third invention, in addition to the configuration of the first or second invention, a forced heating means for forcibly heating the liquid passing through the liquid circulation passage is thermally connected to the liquid circulation passage. When the liquid circulating through the liquid circulation passage is forcibly heated by the forced heating means, the temperature of the hot water stored in the hot water tank is detected by the hot water temperature detecting means in the hot water tank at the end of the heating, The reference temperature is determined based on the detection value.

Furthermore, in addition to the configuration of any one of the first to third inventions, the fourth invention provides at least a part of the outer peripheral portion of the hot water storage tank to prevent freezing of water in the hot water storage tank. A heater for heating the tank is provided, and when the heater is activated, the temperature of the hot water stored in the hot water tank is detected by the hot water temperature detecting means in the hot water tank at the end of the heater heating, and the detected value The reference temperature is determined based on the above.

Furthermore, in the fifth aspect of the invention, in addition to the configuration of any one of the first to fourth aspects of the invention, there is provided display means for displaying the value of the solar heat utilization heat amount calculated by the solar heat utilization heat amount calculation means. It is characterized by.

Furthermore, in the sixth aspect of the invention, in addition to the configuration of any one of the first to fifth aspects of the invention, display means for displaying the value of the solar heat utilization heat amount calculated by the solar heat utilization heat amount calculation means is signal-connected. It is characterized by that.

  In the present invention, the liquid circulation passage formed by interposing a heat collector that collects the heat of sunlight is thermally connected to a hot water storage tank for storing hot water led to the hot water supply destination. Based on the detection value of the hot water temperature detection means in the hot water tank for detecting the temperature of the hot water stored in the hot water tank, the entire hot water temperature in the hot water tank is determined as a reference temperature according to a predetermined setting method. Thus, the solar heat utilization heat quantity is calculated based on this reference temperature. Specifically, every time the hot water of the hot water tank is supplied, the solar heat utilization calorie calculating means subtracts the reference temperature from the detected temperature of the hot water discharged from the hot water tank and the hot water discharged from the hot water tank. The solar heat utilization heat amount per hot water supply is obtained by the product of the flow rate of the hot water, and the solar heat utilization heat amount per hot water supply is added in the predetermined solar heat utilization heat amount calculation setting period. Find the amount of heat used by solar water for the hot water supply.

  Therefore, for example, the reference temperature is determined based on the detected temperature of the hot water temperature detection means in the hot water tank at the set time before sunrise, and the total hot water temperature in the hot water tank before the heat collection by the heat collector is performed. By appropriately setting as above, it is possible to accurately calculate the amount of heat used by solar heat collected by the heat collector, and it is possible to accurately calculate the amount of heat used by solar heat.

  The flow rate of the hot water discharged from the hot water tank can be obtained by providing a flow rate detecting means for directly detecting the flow rate, but the hot water discharged from the hot water tank is not heated. In the solar heat source heat source device configured to mix and pour out water, the detection value of the flow rate detection means for detecting the flow rate after mixing, the detection value of the hot water temperature detection means, and the temperature of unheated water are detected. It can also be calculated by calculation using the detection value of the incoming water temperature detection means and the detection value of the mixed hot water temperature detection means for detecting the temperature of the hot water (water) after mixing.

  The hot water temperature detecting means in the hot water tank is configured to detect the temperature of hot water at a plurality of locations in the hot water tank, and the reference temperature setting means is configured to set an average value of the temperature detection values of the hot water at the plurality of locations as a reference temperature. By doing so, the reference temperature can be set easily and appropriately.

  Further, the solar heat utilization heat amount calculation setting period is one day, and the reference temperature setting means is configured to determine the reference temperature based on the detection value of the hot water temperature detection means in the hot water tank at a predetermined setting time before sunrise. The amount of heat used by solar heat collected later by the heat collector can be accurately calculated for each day.

  Further, a forced heating means for forcibly heating the liquid passing through the liquid circulation passage is thermally connected to the liquid circulation passage, and when the liquid circulating through the liquid circulation passage is forcibly heated, hot water storage is performed at the end of the heating. The hot water in the hot water tank is also heated by heating the liquid in the liquid circulation passage by the forced heating means by determining the reference temperature based on the detected value of the temperature of the hot water stored in the hot water tank by the hot water temperature detecting means in the tank. In such a case, the amount of heat is not calculated as the amount of heat used for solar heat. Therefore, even when heating by the forced heating means is performed, the amount of heat using solar heat can be calculated more accurately.

  In addition, a heater for heating the hot water storage tank is provided on at least a part of the outer peripheral portion of the hot water storage tank to prevent freezing of the water in the hot water storage tank, and when the heater is activated, When the temperature of the hot water stored in the hot water tank is detected by the hot water temperature detecting means in the hot water tank and the reference temperature is determined based on the detected value, the hot water in the hot water tank is also heated by the heater. The amount of heat is not calculated as the amount of heat used for solar heat. Therefore, for example, even when heater heating is performed to prevent freezing of hot water in the hot water storage tank, the amount of heat using solar heat can be calculated more accurately.

  Furthermore, by providing a display means for displaying the value of the solar heat utilization heat amount calculated by the solar heat utilization heat amount calculation means, or a structure for signal connection to the display means provided outside, for example, the heat amount of solar heat utilization can be given to the user. It can be used to inform or make a certificate such as a green energy certificate. Therefore, consumers' awareness of energy saving can be raised.

It is a block diagram which shows the control structure in one Example of the solar heat utilization heat source apparatus which concerns on this invention. It is explanatory drawing which shows the system configuration | structure of the solar-heat utilization heat source apparatus of an Example. It is a schematic diagram which shows the unit structure of the solar-heat utilization heat source apparatus of an Example. It is a flowchart which shows operation | movement of an Example. It is a schematic diagram which shows another example of a connection structure of a display means. It is a schematic diagram which shows another example of a connection structure of a display means. It is a schematic diagram which shows another example of a connection structure of a display means. It is a schematic diagram which shows another example of a connection structure of a display means. It is a schematic diagram of the structure which provided the calorimeter in the solar heat utilization heat source apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are assigned to the same names as those in the conventional example, and the duplicate description is omitted or simplified.

  As shown in FIG. 2, the solar heat utilization heat source device 1 of the present embodiment includes a heat collector 13 interposed in the liquid circulation passage 3. The liquid circulation passage 3 is provided with a pump (circulation pump) 5 that circulates the liquid, and this pump 5 is configured to operate by the electric power of the solar cell. A cistern device 50 is provided in the middle of the liquid circulation passage 3, and the cistern device 50 is provided with electrodes 31, 32, 33 for detecting the liquid level of the liquid in the cistern device 50. .

  In the present embodiment, a part of the liquid circulation passage 3 is passed through the hot water storage tank 14, and the heat collector 13 is thermally connected to the hot water storage tank 14 via the liquid circulation passage 3. Further, a bypass passage 40 is connected to the liquid circulation passage 3, and the auxiliary heat source device 15 is thermally connected to the bypass passage 40 via the liquid-liquid heat exchanger 16 and the circulation passage 17. With this connection structure, the liquid circulating in the circulation passage 3 can be heated by the auxiliary heat source device 15. In the figure, reference numerals 38 and 39 denote electromagnetic valves, and reference numeral 18 denotes a thermal valve.

  The hot water tank 14 is disposed outdoors, and the hot water tank 14 is provided with thermistors 34 to 37 as hot water temperature detecting means in the hot water tank for detecting the temperature of hot water stored in the hot water tank 14. Further, a water supply passage 19 and a drainage passage 20 are connected to the lower side of the hot water tank 14, and a check valve 21 is interposed in the water supply passage 19, and a drainage electromagnetic valve 22 is interposed in the drainage passage 20. ing. In addition, heaters (not shown) are provided around the hot water tank 14 and around the water supply passages 19 and the drainage passages 20 provided outdoors. By operating these heaters, an anti-freezing operation is performed. It can be done. A hot water supply passage 23 is connected to the upper side of the hot water tank 14, and a pressure relief passage 30 having a relief valve 29 is connected to the hot water supply passage 23.

  The hot water supply passage 23 is connected to the auxiliary heat source device 15 via pipe lines 23a and 23b, and is connected to a hot water supply destination such as a kitchen or a bathroom via the auxiliary heat source device 15. Furthermore, solenoid valves 24, 25, and 26 are connected to the hot water supply passage 23, and a bypass passage 28 having a check valve 27 is connected to the solenoid valve (mixing valve) 26. It is connected to the water supply passage 19 via this. The bypass passage 28 is provided with incoming water temperature detecting means 44.

  Further, in the hot water supply passage 23, a hot water temperature detecting means 46 is provided upstream of the electromagnetic valve 25 (side closer to the hot water storage tank 14), and hot water is discharged from the hot water supply passage 23 downstream of the electromagnetic valves 25 and 26. There are provided flow rate detection means 49 for detecting the flow rate of hot water and mixed hot water temperature detection means 48 for detecting the temperature of hot water discharged from the hot water supply passage 23. The flow rate detecting means 49 detects the flow rate of hot water formed (mixed) by adding unheated water through the bypass passage 28 to the hot water discharged from the hot water storage tank 14, and the mixed hot water temperature detecting means 48. Detects the temperature of the hot water.

The configuration of the auxiliary heat source device 15 is not particularly limited. For example, a burner that performs gas combustion, a fuel (gas) supply passage to the burner, a fan that supplies and exhausts the burner, and a passage 23a. and a heat exchanger for heating by burner combustion hot water water that will be supplied from. As the configuration of the auxiliary heat source device 15, various conventionally proposed heat source devices and various proposed future heat source device configurations may be applied, and a heating device or the like may be connected.

  When the temperature of hot water discharged from the hot water storage tank 14 is equal to or higher than the hot water supply set temperature, the auxiliary heat source device 15 guides the hot water to the hot water supply destination without heating, and the temperature of the hot water discharged from the hot water storage tank 14 is the hot water supply set temperature. When the temperature is less than the value, the hot water is heated to be set as a hot water supply set temperature to the hot water supply destination.

In this solar heat utilization heat source device, the pump 5 provided in the liquid circulation passage 3 is driven to circulate the liquid in the liquid circulation passage 3 as indicated by an arrow A in the figure. At this time, when heating of the liquid passing through the liquid circulation passage 3 by the heat collector 13 is performed using sunlight, the hot water in the hot water storage tank 14 is heated by the heat. Further, in the hot water storage tank 14, as indicated by an arrow B in the figure, the water supply is carried out from the water supply passage 19, the hot water which is heated through the hot water storage tank 14 is hot water out hot water destination through the hot water supply passage 23 The At this time, when the temperature of the hot water discharged from the hot water storage tank 14 is lower than the hot water supply set temperature, the hot water at the hot water supply set temperature is supplied by heating by the auxiliary heat source device 15 as described above. When the temperature of the hot water discharged from the hot water storage tank 14 is higher than the hot water supply set temperature, as shown by an arrow C in the figure, the unheated water passes into the hot water passing through the hot water supply passage 23 through the bypass passage 28. It is mixed and discharged.

  In addition, by circulating the liquid in the liquid circulation passage 3 and the hot water in the circulation passage 17 together, heat exchange between the liquid in the liquid circulation passage 3 and the hot water in the circulation passage 17 can be performed. For example, the temperature of the liquid passing through the circulation passage 17 is increased by operating the auxiliary heat source device 15, and the liquid circulating in the liquid circulation passage 3 is, for example, 60 degrees or more by heat exchange between the liquid and the liquid in the liquid circulation passage 3. The liquid in the liquid circulation passage 3 can be sterilized by heating (for example, sterilization of Legionella bacteria).

  In addition, the unit structure of the solar heat utilization heat source apparatus 1 of a present Example is typically shown by FIG. As shown in this figure, for example, in a detached house, the heat collector 13 is arranged on the roof at the same angle (for example, 30 degrees) as the inclination of the roof. For example, the solar light-receiving surface can be arranged vertically on the veranda handrail. The remote control device 2 is signal-connected to the auxiliary heat source device 15.

  Moreover, the solar heat utilization heat source apparatus 1 of a present Example has a control structure as shown in FIG. That is, the solar heat utilization heat source device 1 has the control device 11 provided on the hot water storage tank 14 side and the control device 43 provided on the auxiliary heat source device 15 side, and these control devices 11 and 43 communicate with each other. It is connected. The control device 43 includes a combustion control unit 9, and the control device 11 includes a flow rate calculation unit 4, a reference temperature setting unit 7, a solar heat utilization heat amount calculation unit 8, and a heater operation control unit 12. 14 is signal-connected to the display means 10 provided in the case for housing 14.

  The flow rate calculation means 4 uses the detection value of the tapping hot water temperature detection means 46, the detection value of the incoming water temperature detection means 44, the detection value of the mixed hot water temperature detection means 48, and the detection value of the flow rate detection means 49, The flow rate of hot water discharged from the hot water storage tank 14 is calculated by calculation based on the following equation (1). Then, the calculated value is added to the solar heat utilization heat amount calculation means 8.

W _swj = W _mwj · (T _mwj −T _wij ) / (T _stj −T _wij ) (1)

Here, W _swj is a flow rate of hot water discharged from the hot water storage tank 14, W _mwj is a detected value of the flow rate detecting means 49, T _mwj is a detected value of the mixed hot water temperature detecting means 48, and T _wij is an _incoming water temperature. A detection value _Tstj of the detection means 44 is a detection value of the tapping water temperature detection means 46. Formula (1) is based on Formula (2) and Formula (3). In these Formula (2) and Formula (3), W _wij represents the flow rate of water added through the bypass passage 28. ing.

T _stj · W _swj + T _wij · W _wij = T _mwj · W _mwj (2)

W _swj + W _wij = W _mwj (3)

  Based on the detection values detected by the thermistors 34 to 37, the reference temperature setting means 7 determines the entire hot water temperature in the hot water tank 14 as a reference temperature according to a predetermined setting method. The thermistors 34 to 37 are arranged above and below each other at intervals, and detect the temperatures of different locations in the hot water tank 14 by detecting the temperatures of the locations. In the present embodiment, by providing the plurality of thermistors 34 to 37, the temperature of hot water at a plurality of locations in the hot water tank 14 is detected, and the reference temperature setting means 7 is an average of the temperature detection values of the hot water at the plurality of locations. The value is set as the reference temperature.

  The reference temperature setting means 7 normally sets the average value of the detected temperatures detected by the thermistors 34 to 37 at a predetermined set time before sunrise (for example, 5:30) as the reference temperature. Further, when the liquid circulating through the liquid circulation passage 3 is forcibly heated by the auxiliary heat source device 15, a control signal is received from the combustion control unit 9, and when the heating is finished, the thermistors 34 to 37 store hot water in the hot water storage tank. The temperature of the hot water is detected, and the reference temperature is determined based on the detected value. Further, when the heater operation is performed by the heater operation control means 12, the temperature of the hot water stored in the hot water storage tank 14 is detected by the thermistors 34 to 37 at the end of the heater heating, and based on the detected value. The reference temperature is determined. The set reference temperature value is added to the solar heat utilization heat quantity calculation means 8.

The solar heat utilization heat quantity calculation means 8 is a value obtained by subtracting the reference temperature T _st0 from the detected temperature T _stj detected by the tapping hot water temperature detection means 46 every time hot water is supplied to the hot water storage tank 14 and the flow rate calculation means 4. The solar heat utilization heat amount per hot water supply is obtained by the product with the flow rate W _stj detected by the above. Then, by adding the solar heat utilization heat amount per hot water supply in a predetermined solar heat utilization heat amount calculation setting period, as shown in (Equation 1), it is performed in the solar heat utilization heat amount calculation setting period (for example, one day). The solar heat utilization heat quantity Qsw of the hot water supply is obtained, and the obtained value is added to the remote control device 2. Moreover, the solar heat utilization heat amount calculation means 8 has a configuration for storing the calculation result, and data storage is possible even when the solar heat utilization heat source device 1 is out of power or in failure.

  The display means 10 displays the value of the solar heat utilization heat quantity calculated by the solar heat utilization heat quantity calculation means 8 (see FIG. 3).

  The present embodiment is configured as described above, and its operation will be described based on the flowchart shown in FIG. First, in step S1, when the heat collection amount measurement is turned on, for example, by an operation of the remote control device 2 or the control device 11, in step S2, whether or not the current time is a set time, that is, the current time is a reference temperature. It is determined whether it is time (for example, 5:30) to detect the temperature of the thermistors 34 to 37 for setting. Then, when the current time is the set time, in step S3, the calculation of solar heat utilization heat amount for the day is started (fixed) from now on, and in step S4, the heat amount integrated value is reset (that is, the heat amount integrated value is set). 0).

Next, in step S5, it is determined whether the forced heating operation by the auxiliary heat source device 15 is stopped. In step S6, it is determined whether the freeze prevention operation is stopped. If it is stopped, the temperature of the hot water tank 14 is measured by the thermistors 34 to 37 in step S7, and the reference temperature _Tst0 is set in step S8 based on these measured values. When it is determined in step S5 that the forced heating operation by the auxiliary heat source device 15 is not stopped, or when it is determined in step S6 that the freeze prevention operation is not stopped, these operations are stopped. In order to proceed to step S7, the reference temperature is set when the forced heating operation or the freeze prevention operation is not performed at all, the reference temperature is set based on the temperature before the operation is performed. When performed, the reference temperature is set based on the temperature after operation.

  In step S9, it is determined whether or not 24 hours have elapsed since step S3. If 24 hours have elapsed, the process returns to step S2, and if 24 hours have not elapsed, the process proceeds to step S10. In step S10, it is determined whether or not there is a hot water supply request. If there is no hot water request, the process proceeds to step S20. If the hot water tap is opened and there is a hot water request, the process proceeds to step S11. In step S11, water temperature detection (measurement) is performed by the tapping temperature detection means (solar TH) 46, and in step S12, water temperature detection (measurement) is performed by the incoming water temperature detection means (inflow TH) 44, and step S13. Thus, water temperature detection (measurement) is performed by the mixed hot water temperature detection means (mixing TH) 48, and in step S14, flow rate detection (water quantity measurement) is performed by the flow rate detection means (water amount sensor) 49. The operations in steps S11 to S14 may be performed simultaneously or in any order.

  When it is determined in step S15 that hot water supply is stopped, in step S16, the solar heat utilization heat amount of the single hot water supply is calculated. When it is determined in step S17 that the value is 0 or a negative value, the process proceeds to step S19, and only when the value calculated in step S16 is a positive value, the value is integrated and stored. In step S19, it is determined whether or not 24 hours have elapsed since step S3. When 24 hours have elapsed, the process returns to step S2, and when 24 hours have not elapsed, the process proceeds to step S20.

  In step S20, it is determined whether the forced heating operation by the auxiliary heat source device 15 is stopped. In step S21, it is determined whether the freeze prevention operation is stopped. These operations are stopped. If there is, in step S22, it is determined whether or not 24 hours have elapsed since step S3. If 24 hours have elapsed, the process returns to step S2, and if 24 hours have not elapsed, the process returns to step S10 and the above operation is repeated. . As described above, the daily solar heat use heat amount is calculated.

  In addition, this invention is not limited to the said Example, It sets suitably. For example, the system configuration of the solar heat utilization heat source device of the present invention is not limited to the configuration shown in FIG. That is, the hot water temperature detection for detecting the temperature of the hot water discharged from the hot water storage tank 14 is thermally connected to the hot water storage tank 14 through the liquid circulation passage 3 provided with the heat collector 13 that collects the heat of sunlight. It suffices to have means, a hot water temperature detecting means for detecting the temperature of hot water stored in the hot water tank 14, and a control configuration as shown in FIG.

  For example, the auxiliary heat source device 15, the heater for antifreezing operation and the heater operation control means 12 provided in the above embodiment can be omitted. In the above embodiment, the flow rate calculation means 4 is discharged from the hot water storage tank 14 based on the temperature detected by the hot water temperature detection means 46, the temperature detected by the incoming water temperature detection means 44, and the flow rate detected by the flow rate detection means 49. The flow rate of hot water is calculated, but on the outlet side of the hot water storage tank 14, a flow rate detection means is provided upstream of the junction with the bypass passage 28, and the hot water is discharged from the hot water storage tank 14 by this flow rate detection means. The flow rate of hot water may be detected. However, with the configuration as in the above-described embodiment, only one flow rate detection means 45 is provided on the downstream side of the joining portion with the bypass passage 28, and water is joined through the bypass passage 28 before the hot water supply destination. Since not only the flow rate of hot water discharged but also the flow rate of hot water discharged from the hot water storage tank 14 (that is, the flow rate of hot water before joining) can be known, the device configuration can be simplified and the cost of the device can be reduced. be able to.

  Moreover, in the said Example, based on the detection temperature by the thermistors 34-37, a reference temperature is normally set by using the average value of the detection temperature of the thermistors 34-37 in the setting time (for example, 5:30) before sunrise as a reference temperature. When the forced heating of the liquid in the liquid circulation passage 3 by the auxiliary heat source device 15 or the freeze prevention operation by the heater is performed, the average value of the detected temperatures of the thermistors 34 to 37 after these operations is set as the reference temperature. However, how to set the reference temperature is set as appropriate. For example, the set time may be varied according to the season, the number of thermistors and the interval between the thermistors may be different from those in the above embodiment, and for example, a hot water storage tank as shown by the broken line frame in FIG. It is also possible to detect the temperature at a plurality of locations for the effective portion in 14 and set the average value of the temperatures as the reference temperature.

  Furthermore, in the said Example, as shown in FIG. 3, it comprised so that the value of the solar heat utilization heat amount computed by the solar heat utilization heat amount calculation means 8 might be displayed on the display means 10 provided in the case of the hot water tank 14. For example, as shown below, the value of the amount of heat using solar heat may be displayed. For example, as shown in FIG. 5, the display unit 10 may be provided outdoors or in a common part, and signal connection may be made via the remote controller 2. Moreover, as shown in FIG. 6, the transmitter 51 is connected to the solar heat utilization heat source device 1, and the value of the solar heat utilization is wirelessly transmitted from the transmitter 51 to the remote control device 2 or the display means 10 provided outdoors or in a common part. May be displayed on the display means 10, or the value of solar heat utilization may be sent wirelessly from the transmitter 51 to the reception recorder 52 for display.

  Further, as shown in FIG. 7, a data communication terminal 53 may be connected wirelessly or via wiring, and the value of solar heat utilization may be sent from the communication terminal 53 to the recorder 54 and displayed. As shown in the figure, the signal may be connected to the public line via the modem 56 via the communication adapter 55 and centrally managed by the server center 57. In this way, for example, data can be captured by the mobile phone 58 and the amount of heat used by solar heat can be displayed on the display means of the mobile phone 58.

  Further, an information code such as a bar code or QR code is displayed on the remote control device 2, this information code is read by the portable telephone 58, and transmitted to the server center 57, and the solar heat utilization heat amount is displayed on the portable telephone 58. Can also be displayed. Like these, how to display the value of solar heat utilization and how to use are set as appropriate, in addition to the above examples, various configurations proposed so far, configurations proposed in the future, etc. Applicable as appropriate.

  INDUSTRIAL APPLICABILITY The present invention can accurately determine the amount of heat used by solar heat without increasing the size and cost of the device, and can therefore be used as a solar heat source heat source device for home use or business use.

DESCRIPTION OF SYMBOLS 1 Solar heat utilization heat source apparatus 3 Liquid circulation path 4 Flow rate calculation means 5 Pump 7 Reference temperature setting means 8 Solar heat utilization heat quantity calculation means 9 Combustion control part 10 Display means 11 Controller 12 Heater operation control means 13 Heat collector 14 Hot water tank 15 Auxiliary heat source Device 44 Incoming water temperature detecting means 46 Outlet hot water temperature detecting means 48 Mixed hot water temperature detecting means 49 Flow rate detecting means

Claims (6)

A heat collector that collects the heat of sunlight is interposed in a liquid circulation passage that circulates the liquid, and the liquid that circulates through the liquid circulation passage is heated by the heat of sunlight. The liquid circulation passage is thermally connected to a hot water storage tank for storing hot water led to the hot water supply destination, and a hot water temperature detecting means for detecting the temperature of the hot water discharged from the hot water storage tank, and hot water storage in the hot water storage tank. Hot water temperature detecting means for detecting the temperature of the hot water in the hot water tank, and the hot water temperature detecting means in the hot water tank is means for detecting the temperature of hot water at a plurality of locations in the hot water tank. reference temperature setting hand stage to determine the entire hot water temperature of the hot water storage tank as the reference temperature in accordance with the setting method is previously determined based on the detected values detected are provided by indoor bath water temperature detection means, the reference temperature setting means Is based on the average temperature detection value of the hot water Is configured to be set to a temperature, each time the hot water of the hot water of the hot water tank is made from the detection temperature detected by the hot water hot water detecting means of the hot water is tapped from the hot water tank and the value obtained by subtracting the reference temperature flow The solar heat utilization heat amount per hot water supply is obtained by the product of and the solar heat utilization heat amount per hot water supply is added in the predetermined solar heat utilization heat amount calculation setting period. A solar heat utilization heat source device comprising solar heat utilization heat amount calculation means for obtaining a solar heat utilization heat amount of a hot water supply. The solar heat utilization heat amount calculation setting period is one day, and the reference temperature setting means is configured to determine the reference temperature based on the detected value of the hot water temperature detection means in the hot water tank at a predetermined setting time before sunrise. claim 1 Symbol mounting solar thermal heat source apparatus. A forced heating means for forcibly heating the liquid passing through the liquid circulation path is thermally connected to the liquid circulation path, and when the liquid circulating through the liquid circulation path is forcibly heated by the forced heating means. The temperature of the hot water stored in the hot water tank is detected by the hot water temperature detecting means in the hot water tank when the heating is completed, and the reference temperature is determined based on the detected value. claim 2 Symbol mounting solar thermal heat source apparatus. At least a part of the outer periphery of the hot water tank is provided with a heater for heating the hot water tank to prevent freezing of the water in the hot water tank, and when the heater is activated, the hot water tank indoor bath water temperature detecting means detects the temperature of the hot water is hot water storage in the hot water storage tank, any of claims 1 to 3, characterized in that the arrangement for determining the reference temperature based on the detected value The solar heat utilization heat source apparatus as described in one. The solar heat utilization heat source device according to any one of claims 1 to 4 , further comprising display means for displaying a value of the solar heat utilization heat quantity calculated by the solar heat utilization heat quantity calculation means. The solar heat utilization heat source apparatus according to any one of claims 1 to 5 , wherein a display means for displaying a value of the solar heat utilization heat quantity calculated by the solar heat utilization heat quantity calculation means is signal-connected.

Images