JP3159074B2 - Hot water supply device with solar hot water supply function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus having a solar hot water supply function which utilizes hot water from a solar water heater.

[0002]

2. Description of the Related Art There has been provided a hot water supply apparatus having a solar hot water supply function in which a solar water heater is connected to a main water heater so that hot water from the solar water heater can be used as needed.

[0003]

However, in a conventional hot water supply device with a solar hot water supply function, when hot water supplied from a solar hot water supply device is connected to a main hot water supply device and taken in, a variable valve, a mixing valve, or the like is used. Only hot water at a fixed temperature can be taken into the main water heater,
Therefore, in the case where the hot water is further set to the set hot water in the main water heater, the temperature control often cannot be performed well. Further, in the conventional apparatus, a dedicated controller or the like is not provided in a solar hot water supply connection unit for connecting a hot water supply path from a solar hot water heater to a main hot water heater, and a solar hot water heater side and a main hot water heater side are not provided. However, there was a problem that fine-grained control in cooperation with the above was not possible.

Accordingly, the present invention solves the above-described problems of the conventional apparatus, and performs fine-grained coordinated control between the main water heater and the solar water heater when using hot water from the solar water heater. It is an object of the present invention to provide a hot water supply device with a solar hot water supply function, which can effectively use hot water from a solar hot water supply device.

[0005]

In order to achieve the above object, a solar water heater with a solar water heater according to the present invention has at least a heat exchange can body, and a water inlet and a water outlet connected to the heat exchange can. a main water heater, a solar water heater using solar heat, a solar water heater function with the water heater and a solar hot water supply connection unit the solar hot water passage connected to the main water heater side from the solar water heater, the Main hot water supply
The main controller controls the main water heater and the main controller.
While providing a remote control for remotely controlling the
The solar hot water connection unit is connected to the solar hot water connection unit.
Only a solar hot water connection controller that controls
And the solar hot water supply connection controller
Control information and main hot water supply from the remote controller owned by Trolla
The main control of information from the instrument sensors and other information
And control the solar hot water connection unit
In addition, the state of the solar hot water supply connection unit side that it owns
The first is that the configuration is always provided to the main controller .
The feature is. In the hot water supply apparatus with a solar hot water supply function of the present invention, in addition to the above first feature, the solar hot water supply connection unit includes a hot water supply flowing from the solar hot water supply through the solar hot water supply path and a hot water supply or other water source passing through the water supply path. A mixing control valve for mixing and adjusting the incoming water and sending the mixed water to a water inlet of a main water heater. The solar hot water connection controller has a solar hot water temperature sensor provided in the solar hot water supply passage as a control configuration thereof. Input hot water temperature information and hot water set temperature information from the main controller and hot water temperature information from a hot water temperature sensor provided in the hot water supply path,
The control configuration is such that the mixing ratio is calculated by the mixing control valve, an operation command is output to the mixing control valve, and the necessity of the combustion operation in the main water heater is returned.
The feature is. In addition to the second feature, the solar water supply apparatus with a solar hot water supply function of the present invention further includes a control configuration of a solar hot water supply connection controller, wherein information of a non-heating water supply request generated in the main hot water supply is transmitted from the main controller to the solar hot water supply connection. when that has been input to the controller is that it is a control configuration which outputs an operation command to the water side is fully opened the mixed regulating valve as the third feature. Further, in addition to the second or third feature, the hot water supply device with a solar hot water supply function according to the present invention further includes a control configuration of a solar hot water supply connection controller, which is capable of controlling mixing and adjustment when a temperature sensor on the solar hot water supply connection unit side fails. A control configuration for outputting an operation command to fully open the water side to the valve and transmitting an abnormality display request signal for displaying an abnormality on the solar hot water supply unit side to the remote controller to the main controller. 4.

[0006] According to a first aspect of the present invention, in Rukoto provided a solar hot water connection controller dedicated to the solar hot water connection unit, direct solar water heating connection unit in this solar hot water connection controller <br/> La It is controlled to
Can be. And the solar hot water connection controller
Main remote control without remote control
Remote control (main controller remote control)
Control information and information from the sensors of the main water heater.
Information and other information to receive solar hot water
Controls the unit in a state that is linked properly with the operation of the main water heater
can do. And the solar hot water connection unit
Status information is provided by the solar hot water connection controller.
Is provided to the main controller and shared.
Troller always checks the status of the solar hot water connection unit.
It can be grasped and responded to appropriate judgments and operation commands
Control can be performed. According to the second aspect of the present invention, in addition to the operation and effect of the first aspect, when hot water is supplied via the main water heater, the hot water supply set temperature is commanded from the remote controller to the main controller. Then, the hot water supply set temperature information is immediately transmitted from the main controller to the solar hot water supply connection controller. Solar hot water connection controller includes a hot water set temperature that has been communicated, the solar water temperature from the solar water temperature sensor, and a water temperature from the water supply temperature sensors, and calculates the mixing ratio by the mixing control valve, the mixing ratio It makes operating the mixing control valve to be. At the same time, when hot water at a predetermined hot water supply set temperature is obtained by the mixing control valve, a reply is sent to the main controller to the effect that the combustion operation in the main water heater is unnecessary. If the hot water supply temperature cannot be set with the hot water from the solar water heater, the necessity of the combustion operation in the main water heater is returned to the main controller. The main controller instructs combustion of the main water heater or does not issue the combustion instruction depending on whether or not the combustion is returned from the solar hot water supply connection controller. As described above, according to the second feature, the solar hot water supply connection controller receives the communication of the hot water supply set temperature information from the main controller, so that the mixing control valve is directly controlled from the beginning of the operation to supply the hot water at the required hot water set temperature. Can be supplied to the main water heater side. In addition, when hot water at a set hot water supply temperature can be obtained by hot water from the solar water heater, the combustion operation is not started from the beginning without starting the combustion of the main water heater once and stopping it by feedback control. Can be completed. According to the third aspect of the present invention, in addition to the operation and effect of the second aspect, when unheated water is requested on the main water heater side, the water request is transmitted from the main controller to the solar water heater. Communicated to the connection controller, the solar hot water connection controller opens the mixing control valve fully to the water side. Therefore, even when a solar water heater is connected, only water can be supplied to the main water heater. According to the fourth aspect of the present invention,
In addition to the effects of the second or third feature, when a temperature sensor such as a solar hot water temperature sensor or a feed water temperature sensor on the solar hot water supply connection unit side is broken,
The solar hot water supply connection controller opens the mixing control valve fully on the water side. As a result, the hot water sent from the solar hot water supply connection unit side to the main water heater becomes water, but since the temperature is a stable temperature, the main water heater side heats this water to ensure a predetermined hot water supply set temperature. Can be controlled. Also based on the failure of the temperature sensor can also occur disadvantages preventing such feeding the hot water of the hot water supply set temperature or higher to the main water heater in the solar hot water connection unit. Further, the abnormality on the solar hot water supply connection unit side is displayed on the remote control via the main controller from the solar hot water supply connection controller, so that the user can immediately know the failure of the apparatus.

[0007]

FIG. 1 is an overall configuration diagram of a hot water supply apparatus with a solar hot water supply function according to an embodiment of the present invention.

[0008] A main water heater A, a solar water heater B, and a solar water heater connection unit C are provided. The main water heater A has a heat exchange can body 10, a water inlet 21 and a hot water outlet 22 connected to the heat exchanger can 10, and has a main controller 30 for controlling the main water heater A. The heat exchange can 10 of the main water heater A is an instantaneous heat exchange can, and a finned heat exchange coil 23 in which the water inlet 21 and the outlet 22 are connected.
Is provided. The water inlet 21, the hot water outlet 22 and the heat exchange coil 23 constitute a hot water supply circuit 20. The heat exchange can 10 has a burner 11
Is provided. The water inlet 21 of the hot water supply circuit 20 is provided with a pump 21a, a water flow switch 21b, a water amount sensor 21c, and a water inlet temperature sensor 21d. A hot water temperature sensor 22a is provided in the hot water supply path 20 of the hot water supply circuit 20, and a hot water supply curn 22b is provided at an end. In addition, the inlet 21
A pi-bus path 24 with a control valve 24a is provided from the to the hot water path 22. Further, a bath drop-in passage 25 is provided from the hot water passage 22. The bath drop-in passage 25 is provided with a drop-in opening / closing valve 25a.

The heat exchange can 10 is connected to a bath reheating circuit 40. The bath reheating circuit 40 is a forward path for transporting bath water heated from the heat exchange can 10 to the bath 44.
41 and a return route 42 for returning the bath water from the bath 44 to the heat exchange can 10
And a heat exchange coil 43 for performing heat exchange heating of bath water in the heat exchange can body 10. The forward path 41 is provided with a hopper receiving portion 41a for receiving hot water dropped from the bath dropping path 25 and a three-way switching valve 41b. The return path 42 is provided with a circulation pump 42a, a bath temperature sensor 42b, and a water flow switch 42c.

The main controller 30 receives information from the sensors of the main water heater A and inputs a command from the remote controller 50 to control the operation of the main water heater A. Further, it communicates with the remote controller 50 and with a solar hot water supply connection controller 60 of the solar hot water connection unit C described later to exchange information. The solar hot water supply connection unit C includes a mixing control valve in addition to the solar hot water connection controller 60.
Has 61. The mixing control valve 61 is connected to a solar hot water supply path 70 from the solar water heater B and a water supply path 80 from a water source such as water supply, and the mixing control valve 61 leads out of the water inlet path 21. An on-off valve 62 such as an electromagnetic on-off valve and a solar hot water temperature sensor 63 are provided in a solar hot water supply path 70 of the solar hot water connection unit C.
A water supply temperature sensor 64 is provided in the water supply path 80 of the solar hot water supply connection unit C, and a solar mixed water temperature sensor 65 is provided in the water supply path 21 of the solar hot water supply connection unit C. The detected temperature information from each of the temperature sensors 63, 64, and 65 is input to the solar hot water supply connection controller 60, and the solar hot water connection controller 60 is based on information such as the detected temperature information and control information received from the main controller 30.
The mixing ratio of the mixing control valve 61 is adjusted, and the on-off valve 62 is opened and closed.

The solar water heater B has a solar heat exchanger 71, a hot water storage tank 72, and the like, in addition to the solar hot water path 70, and a part of the water supply path 80 branches off and is connected to the hot water storage tank 72. In addition, a solar hot water supply channel 70 extends from the hot water storage tank 72. The medium heated by the solar heat exchanger 71 is guided into the hot water storage tank 72, and heat-exchanges and heats the water in the hot water storage tank 72 to produce hot water. The hot water in the hot water storage tank 72 is supplied via a solar hot water supply path 70.

Next, the operation when hot water is supplied from solar water heater B using solar hot water will be described. First, by turning on the power supply (not shown) of the solar hot water supply connection unit C, the operation of the solar hot water supply connection unit C becomes possible. Now, when the hot water supply operation switch is turned on by the remote controller 50 in a state where the power of the main water heater A is turned on, the ON information of the hot water supply operation switch is communicated from the main controller 30 to the solar hot water supply connection controller 60, thereby the solar hot water supply The connection controller 60 changes the mixing control valve 61 from the basic state with a certain appropriate mixing ratio to the water side fully opened state. Next, on the main water heater A side, by opening the hot water supply curn 22b or the drop-off opening / closing valve 25a for automatic bath water supply, the water flow switch 21b of the water inlet passage 21 detects the minimum operating water amount or more and turns it on. Information on the water flow switch 21b ON and information on the hot water supply set temperature set by the remote controller 50 is transmitted from the main controller 30 to the solar hot water supply connection controller 60. The solar hot water supply connection controller 60 opens the on-off valve 62 according to the received information on the water flow switch 21b, and also receives the received hot water set temperature, the solar hot water temperature by the solar hot water temperature sensor 63, and the water supply by the hot water temperature sensor 64. From the temperature, a mixing ratio for setting the hot water supply set temperature is calculated, and an operation command is issued so that the mixing control valve 61 has the calculated mixing ratio. Further, in the calculation of the mixture ratio, the solar hot water supply connection controller 60 provides a signal to the main controller 30 that the combustion operation of the main hot water heater A is unnecessary when the hot water set temperature can be adjusted using the solar hot water. return it. Thereby, hot water can be supplied on the main water heater A side without performing the combustion operation from the beginning. Of course, when the hot water supply set temperature is changed during the operation, the changed hot water supply set temperature information is transmitted from the main controller 30 to the solar hot water supply connection controller 60.
And information is shared. The solar hot water supply connection controller 60 performs control based on the new hot water supply set temperature. Conventionally, after starting the combustion operation, the combustion is stopped based on the feedback control. The main controller 30 starts the combustion operation of the burner 11 of the heat exchange can 10 when there is no reply indicating that the combustion operation is unnecessary from the solar hot water supply connection controller 60 or when there is a signal indicating that the combustion operation is necessary.

Next, a case where a request for supplying unheated water, that is, a request for water, by the remote controller 50 will be described. As a case where water is required, for example, there is a case where a bath tepid operation is performed. The bath lulling operation is an operation in which the bathtub temperature is slightly lower than the set temperature. When a water request signal is issued from the remote controller, the main controller 30 communicates the water request signal to the solar hot water connection controller 60. The solar hot water supply connection controller 60 that has received the water request signal controls the operation of the mixing control valve 61 so as to be in the water side fully open state. This makes it possible to supply water even when solar water heater B is connected to main water heater A.

Next, a solar hot water supply connection controller 60 is provided in the solar hot water supply connection unit C to share information by mutual communication with the main controller 30 on the main water heater A side. A description will be given of a mechanism that enables continuous supply of hot water at a required hot water supply set temperature in the entire system including the main water heater A even when the temperature sensor on the unit C side fails . In this device, when any one of the solar hot water temperature sensor 63, the hot water temperature sensor 64, and the solar mixed water temperature sensor 65 on the solar hot water connection unit C side fails, that is, the solar hot water connection controller 60 Is determined, the solar hot water supply connection controller 60 outputs an operation command to fully open the water side to the mixing control valve 61 and displays an abnormality on the solar hot water supply connection unit C side on the remote controller 50. Is transmitted to the main controller 30. If the mixing ratio of the mixing control valve 61 is controlled by directly taking in the temperature information from the failed temperature sensor, the temperature of the mixed water flowing out of the mixing control valve 61 changes frequently, or the main water heater A requests. For example, hot water having a temperature exceeding the set hot water supply temperature is supplied to the main water heater A side, and the entire hot water supply system is in a failure state. Even when connected to the solar water heater B as in the present apparatus, the mixing control valve 61 is fully opened on the water side to allow water to flow, so that water having a stable but stable temperature is mainly used. The hot water can be supplied to the hot water supply A side, so that the main hot water supply A side can be surely adjusted to the hot water at the set hot water supply temperature and can continue to provide a stable hot water supply. In addition, the solar water hot water connection controller 60 sends the solar water hot water connection unit C
The main controller 30 transmits an abnormality display request signal for displaying an abnormality on the side to the main controller 30, and the remote controller 50 displays an indication that the solar hot water supply connection unit C has an abnormality. Done. Thus, the user can quickly know the abnormality of the solar hot water supply connection unit C and can start repair.

In the above, the heat exchange can 10 of the main water heater A
Does not necessarily need to be connected to a bath heating facility such as the bath reheating circuit 40. On the other hand, in main water heater A,
Other heating circuits and other circuits may be added. In the present embodiment, the heat exchange can 10 is of the instantaneous heating type, but may be a so-called semi-hot water storage type heat exchange can. In this case, a relatively small hot water storage tank, that is, a semi-hot water storage tank is arranged instead of the heat exchange coil 23 of the hot water supply circuit 20, and the water in the hot water storage tank is heated and used for hot water supply.
The heat exchange coil 43 and the like of the other bath reheating circuit 40 are heat-exchanged and heated by the hot water in the semi-hot water storage tank. The burner
11 may be an oil burner or a gas burner.
The type of burner does not matter.

[0016]

According to the present invention, there is provided the above construction.
According to the solar hot water supply function with hot water supply apparatus according to, at least
Both the heat exchange can and the water inlet and outlet connected to the heat exchange can
Main water heater with hot water path and solar using solar heat
In front of the water heater and the solar hot water path from the solar water heater
The solar water heater connection unit connected to the main water heater side
A hot water supply apparatus having a solar hot water supply function,
The water heater includes a main controller for controlling the main water heater and the main controller.
A remote controller for remote control of the
The solar hot water connection unit is connected to the solar hot water connection unit.
Only the solar hot water connection controller that controls the knit
And a solar hot water supply connection controller,
Control information and main supply from the remote control
Information from the water heater sensors and other information
Control the solar hot water connection unit
In both cases, the status of the solar hot water connection unit side that you own
Since the configuration that provides the state always to the main controller, the Soviet Union
Directly to the hot water supply controller
The main controller is
From the remote control (main controller remote control)
Control information and information from sensors of the main water heater, other
By receiving the information, the solar hot water connection unit
Main water heater side in a state properly linked with the operation of the main water heater
Control appropriately and promptly, taking into account the situation
Can be done. Moreover, solar hot water connection unit
Status information is mainly provided by the solar hot water connection controller.
Provided to the controller and shared, the main control
The state of the solar hot water supply connection unit at any time
Can grasp the solar hot water connection unit
Of appropriate and prompt judgments and operation commands corresponding to the
Control can be provided for the main water heater. According to the hot water supply apparatus with a solar hot water supply function of the second aspect, in addition to the effect of the configuration of the first aspect, the solar hot water supply connection controller receives the communication of the hot water supply set temperature information from the main controller, From the beginning of the operation, the mixing control valve can be directly controlled to supply hot water at the required hot water supply set temperature to the main water heater. In addition, when hot water at a set hot water supply temperature can be obtained only by hot water from the solar water heater, the combustion operation of the main water heater can be omitted from the beginning without starting combustion once. According to the hot water supply apparatus with a solar hot water supply function of the third aspect, in addition to the effect of the configuration of the second aspect, as a control configuration of the solar hot water supply connection controller,
When the information of the unheated water supply request generated in the main water heater is input from the main controller to the solar hot water supply connection controller, a control configuration for outputting an operation command to fully open the water side to the mixing control valve is provided. Therefore, even when a solar water heater is connected, if water is requested by placing it on the main water heater side, it is possible to immediately supply only water from the solar water heater connection unit side to the main water heater side. it can. According to the hot water supply apparatus with a solar hot water supply function of the fourth aspect, in addition to the effects of the configuration of the second or third aspect, as a control configuration of the solar hot water supply connection controller, a temperature sensor on the solar hot water supply connection unit side In the event of a failure, an operation command to fully open the water side is output to the mixing control valve, and an abnormality display request signal for displaying an abnormality on the solar hot water supply connection unit side to the remote controller is sent to the main controller. If the temperature sensor such as the solar hot water temperature sensor or the feed water temperature sensor on the solar hot water supply connection unit side is faulty, the water is sent to the main hot water supply side because it has a control configuration to transmit. The hot water can be supplied to the main water heater, so that the hot water can be surely adjusted to the hot water set temperature to continuously provide a stable hot water supply. In addition, the fault on the solar hot water supply connection unit side can be displayed on the remote control and displayed, so that the user can quickly know the abnormality of the solar hot water supply connection unit and can start repair.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a hot water supply apparatus with a solar hot water supply function according to an embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List A main water heater B solar water heater C solar water heater connection unit 10 heat exchange can body 20 water heater circuit 21 water inlet 22 water outlet 30 main controller 40 bath reheating circuit 50 remote controller 60 solar hot water connection controller 61 mixing control valve 63 solar hot water Temperature sensor 64Feed water temperature sensor  65 Solar mixed water temperature sensor 70 Solar hot water supply channel 80 Water supply channel

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshio Tokioka 93, Edo-cho, Chuo-ku, Kobe-shi, Hyogo Noritsu Co., Ltd. (56) References JP-A-6-292271 (JP, A) (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24H 1/00 621 F24H 1/00 602 F24J 2/42

Claims (4)

(57) [Claims] 1. A main water heater having at least a heat exchange can body, a water inlet and a water outlet connected to the heat exchange can body, a solar water heater using solar heat, and solar hot water from the solar water heater A solar hot water supply function having a solar hot water supply connecting unit for connecting a path to the main hot water supply side, wherein the main hot water supply has a main hot water supply controlling unit.
Remote controller for remote controlling the controller and the main controller
And the solar hot water connection unit
Solar hot water supply unit for controlling the solar hot water supply unit
Connection only, and a solar hot water connection
Is the controller a remote controller owned by the main controller?
Control information and information from sensors of the main water heater,
Receiving other information from the main controller for solar hot water connection
Controls the unit and provides solar power
Always provide the hot water connection unit side status to the main controller.
A hot water supply device with a solar hot water supply function. 2. A solar hot water supply connection unit mixes and adjusts hot water flowing from a solar water heater through a solar hot water supply path and water flowing from a water source such as a water supply through a water supply path to a main hot water supply water inlet. It has a mixing control valve to send out, and the solar hot water connection controller has, as its control configuration, solar hot water temperature information from the solar hot water temperature sensor provided in the solar hot water supply path and a hot water supply temperature sensor provided in the hot water supply path. The water supply temperature information and the hot water set temperature information from the main controller are input, the mixing ratio is calculated by the mixing control valve, an operation command is output to the mixing control valve, and the necessity of combustion operation in the main water heater is returned. The hot-water supply device with a solar hot-water supply function according to claim 1, wherein the hot-water supply device has a control configuration that performs the control. As 3. A control configuration of a solar hot water connection controller, when the information of the non-heated water supply request generated in the main water heater has been inputted from the main controller to the solar hot water connection controller, the mixed regulating valve 3. The hot water supply apparatus with a solar hot water supply function according to claim 2, wherein the hot water supply apparatus has a control configuration for outputting an operation command for fully opening the water side. 4. The control configuration of the solar hot water supply connection controller, when a temperature sensor on the solar hot water supply connection unit side fails, outputs an operation command to fully open the water side to the mixing control valve, and outputs the solar hot water supply. The hot water supply device with a solar hot water supply function according to claim 2 or 3, wherein the control unit is configured to transmit an abnormality display request signal for displaying an abnormality on the connection unit side to the remote controller to the main controller.