JPH0432623A - Hot water heater - Google Patents

Abstract

PURPOSE:To provide a hot water heater device not generating any contradiction between a hot water set temperature and an actual hot water feeding temperature by a method wherein when a water flow switch is turned on or off, a jumper line within a main body controller is turned on or turned off, the hot water temperature within the hot water storing boiler is automatically changed over to a high temperature or a low temperature heating point. CONSTITUTION:A main body controller 40 has a boiler temperature setting circuit 41 for use in setting a hot water storing temperature of a hot water storing boiler 11. A temperature set by the circuit 41 and a boiler hot water storing temperature sensor 60 are compared by a comparator circuit 43 composed of a micro-computer 42 stored in the main body controller 40. A combustion device 15 is controlled in such a way as the temperature becomes the set boiler temperature adjusting point. The boiler temperature adjusting set circuit 41 is provided with a jumper line 44, the jumper line 44 is provided with a switch 44a. When the water flow switch 28 is turned on, the switch 44a is turned on. When the water flow switch 28 is turned off, the switch 44a is turned off. Under a conditions in which the switch 44a is turned off, the boiler temperature adjusting point is set to 65 deg.C. Accordingly, the boiler hot water storing temperature can be changed over easily to the high temperature heating point and the low temperature heating point without any trouble.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a hot water heating device7, and more specifically, it uses one hot water source (hot water storage can) and one circulation pump to perform two types of high-temperature heating and low-temperature heating. The present invention relates to a hot water heating device that can perform different types of heating operations.

The present invention also relates to a hot water heating device with a hot water supply function that can also supply hot water using a hot water source for heat exchange.

<Prior art> As this kind of hot water heating device,
The device described in the above publication has been provided in the past. This conventional device will be explained with reference to FIG. 2. 1 is a hot water source, 2.3.
4 is a radiator for high temperature heating, 5 is a radiator for low temperature heating, 6 is a circulation pump, 7 is a main hot water outgoing path, and 8 is a main hot water return path. The low-temperature heating radiator 5 is configured to supply low-temperature water in the form of a mixture of hot water from the main hot water outward path 7 and return water from the main hot water return path 8.

<Problems to be Solved by the Invention> However, in the above-mentioned conventional technology, low-temperature heating can be performed by the low-temperature heating radiator 5 when the high-temperature heating radiator is used, but when the high-temperature heating radiator is used, low-temperature heating can be performed. When the water is not being used, the return water (low-temperature water) from the main hot water return path 8 cannot be used (there is no return water, so it cannot be mixed with high-temperature water), and heating by the low-temperature heating radiator 5 also uses water from the hot water source 1. The drawback was that heating was performed using high-temperature water.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and makes it possible to simultaneously operate high-temperature heating using a radiator for high-temperature heating and low-temperature heating using a radiator for low-temperature heating using one hot water source and one circulation pump. Moreover, it is an object of the present invention to provide a hot water heating device that can perform low-temperature heating using a radiator for low-temperature heating without any trouble even when high-temperature heating is not performed.

In addition, in order to achieve the above purpose, if the set temperature of the hot water source is switched to a lower value as necessary, if such a hot water source is also used to supply hot water, the set temperature for hot water supply will be lower than the temperature set in the can body. However, the present invention prevents the hot water supply temperature from being set higher than the can body hot water storage temperature setting when the can body hot water storage temperature setting is changed, so that the hot water supply temperature and the actual hot water supply temperature are different from each other. The purpose of the present invention is to provide a hot water heating device that does not cause any contradiction between the hot water supply temperature and the hot water supply temperature.

<Means for Solving the Problems> In order to achieve the above object, the hot water heating device of the present invention circulates hot water heat-exchanged through the hot water storage can to a high-temperature heating radiator using one pump, and A hot water heating system in which the hot water branched from the middle of the outward circulation path is circulated to the low temperature heating radiator so that it can be partially mixed with the water in the return path of the high temperature heating radiator, The presence or absence of hot water flowing to the radiator is detected by a water flow switch, and when the water flow switch is on, a jumper wire in the main controller is turned on to automatically switch the water temperature in the hot water storage can to the high-temperature heating temperature, and the water flow is controlled. The first feature is that when the switch is off, the jumper wire is turned off and the water temperature in the hot water storage can is automatically switched to a low-temperature heating temperature.

Further, the hot water heating device of the present invention can circulate the hot water heat-exchanged through the hot water storage can to one or more heating radiators, and can also circulate the hot water in the hot water storage can with low-temperature water through a mixing valve. It is powered by a hot water heater with a hot water supply function that can supply hot water, and the set water temperature of the can body is switched by turning on and off the jumper wire in the main controller, and the data on the on and off of the jumper wire is sent to the remote controller. The second feature is that the upper limit of the temperature control that can be set by the hot water temperature control setting circuit in the remote controller is switched according to whether the jumper wire is turned on or off.

<Operation> According to the first feature above, when high-temperature heating operation is performed, hot water is supplied to the high-temperature heating radiator, so the water flow switch is turned on, which turns on the jumper wire in the main controller. The temperature of the water in the hot water storage can is set to the temperature for high-temperature heating. This actually provides high-temperature heating. At that time, if low-temperature heating operation is performed at the same time, the path to the low-temperature heating radiator is opened, so that some of the high-temperature water from the hot water storage can passes through the high-temperature heating radiator and is cooled. The heated water is mixed with a portion of the water to reach a temperature suitable for low-temperature heating, and then circulated to the heating radiator. This allows low-temperature heating to be performed without any problems.

On the other hand, when only low-temperature heating operation is performed without high-temperature heating operation, hot water does not flow to the high-temperature heating radiator side, so the water flow switch is turned off, and the jumper wire in the main unit controller is turned off. It is turned off and the water temperature in the hot water storage can is set to the temperature for low-temperature heating. The hot water flowing to the radiator for low-temperature heating does not mix with the water from the return path of the radiator for high-temperature heating (because hot water does not flow to the radiator for high-temperature heating), but the hot water itself from the hot water storage can Since the temperature is adjusted to low-temperature heating, low-temperature heating can be performed without any problems.

The functions described above can be performed using one hot water storage can and one circulation pump.

In addition, according to the second feature, when the set water temperature of the hot water storage can is switched to a lower temperature side by turning off the jumper wire, the data of the jumper wire being turned off is also sent to the remote controller at the same time, thereby controlling the hot water temperature. The upper limit temperature that can be set is also changed to be lower than the set hot water temperature of the can body. That is, according to this feature, the user can set a temperature at which hot water cannot be supplied, and the displayed contradiction is prevented.

<Embodiment> FIG. 1 is a configuration diagram showing an implementation device of the present invention, and FIG. 2 is a control block diagram of the implementation device.

A hot water storage can 11, so-called a semi-hot water storage can, is used as a hot water source, and an inlet pipe 12 and a hot water outlet pipe 13 are connected to the hot water storage can 11. Hot water from the outlet pipe 13 can be supplied to hot water via the mixing valve 14. A combustor 15 is equipped with a fuel supply means and an air blower, and heats the hot water storage can 11.

A heat exchange coil 2° for heating is provided in the hot water storage can 11, and a main hot water outgoing path 21 and a main hot water returning path 22 for heating are connected to the coil 20. The main hot water outgoing path 21 is provided with a reserve tank 23 and a circulation pump 24. The circulation pump 24 connects the hot water storage can body 11 (heat exchange coil 20
) is provided on the hot water suction side to prevent positive pressure from being applied.

The main hot water outgoing path 21 is connected to the high temperature heating outgoing path 25 and further continues to the main hot water incoming path 22 . And the main hot water outgoing path 21
The outgoing path 31 for low temperature heating and the cooling water channel 32 are branched from each branch point 26, 27 of the main hot water return path 22, and become a mixing outgoing path 34 via a mixing valve 33, which is connected to a radiator 35 for low temperature heating. From the radiator 35 for low temperature heating, there is a return route 36 for low temperature heating.
joins the main hot water return path 22. By piping in this way, while the high-temperature heating radiator 25 is in use, the cooling water that has passed through the high-temperature heating radiator 25 is routed to the cooling water channel 32.
Since the water is mixed with hot water and sent to the radiator 35 for low-temperature heating, the hot water for high-temperature heating from the can body 11 can also be used for low-temperature heating.

On the other hand, in order to perform low-temperature heating only by the low-temperature heating radiator 35 without performing high-temperature heating by the high-temperature heating radiator 25, in this embodiment, the branch point 26 of the main hot water outgoing path 21
A water flow switch 28 is provided closer to the high temperature heating radiator 25 side. When the high-temperature heating radiator 25 is not used, the cooling water is not mixed through the cooling water channel 32, so the hot water heat-exchanged in the hot water storage can 11 is directly transferred from the main hot water outgoing path 21 to the low-temperature heating water. The water is supplied to a radiator 35 for low-temperature heating through an outgoing path 31, a mixing valve 33, and a mixing outgoing path 34 (in this case, cooling water is not mixed). Therefore, in this case, the water flow switch 28 detects non-use of the high-temperature heating radiator 25, and the main body controller 40 controls the temperature of the hot water storage can 11 to high-temperature heating (for example, 85° C.).
I try to switch from low-temperature heating (for example, 65 degrees Celsius). Note that the high-temperature heating radiator 25 is embodied, for example, as a fan convector or a panel heater, and the low-temperature heating radiator 35 is embodied, for example, as a floor heating panel.

The main controller 4o is a remote controller 50
Inputs commands from the water flow switch 28, information from the temperature sensor 6o that detects the can body hot water temperature, etc., outputs predetermined commands to the mixing valve 14, the combustor 15, the circulation pump 24, etc., and operates the device. Controls the operation of each part.

The heating control centered on the main body controller 40 and the associated hot water supply control will be further explained using FIG. 2.

The main body controller 40 has a can temperature adjustment circuit 41 for setting the hot water storage temperature of the hot water storage can 11.
The comparison circuit 43 configured in the microcomputer 42 built into the main controller 40 compares the temperature set by the temperature sensor 6o with the can body hot water temperature detected by the temperature sensor 6o.
The combustor 15 is controlled to reach the set can temperature control temperature.

The can temperature adjustment setting circuit 41 is provided with a jumper wire 44, and a switch 44a is provided on the jumper wire 44. When the water flow switch 28 is on, the switch 44a is turned on, and when the water flow switch 28 is off, the switch 44a is turned off. I am trying to make it so that When the switch 44a is on, the can temperature adjustment temperature is set to, for example, 85°C, and when the switch 44a is off, the can temperature adjustment temperature is set to 65°C.

Data indicating whether the jumper line 44 is on or off is sent to the remote controller 50 through the microcomputer 42 or directly. A hot water temperature adjustment setting circuit 51 is configured in the remote controller 50, and a predetermined hot water temperature is set by input from a hot water temperature adjustment input means 52, and this is displayed via a hot water temperature adjustment display circuit 53. There is. Further, when the hot water temperature is set, it is sent to the main controller 40 side, and the mixing valve 14 is adjusted.

Hot water supply temperature adjustment setting circuit 51 by the hot water supply temperature adjustment input means 52
The hot water temperature can be set in seven steps up to a maximum of 80°C, for example. As mentioned above, when the hot water storage temperature of the can body 11 is switched to low-temperature heating independent operation, the hot water storage temperature of the can body itself has been lowered to 65°C, so hot water supply at at least a temperature higher than that is not possible. It's impossible. If a hot water supply temperature higher than that is set, it may cause complaints that the difference between the user's desired temperature and the actual hot water supply temperature is too large. Therefore, in this embodiment, a hot water supply salt 11 M a x setting circuit 54 for changing the upper limit of setting for hot water supply temperature control is configured in the remote controller 50, and the hot water supply temperature control is controlled by data obtained by turning on and off the jumper wire 41. Max
I am trying to change the setting value. That is, when the jumper wire 41 is on, the hot water temperature control Max setting circuit 54
The ax setting value is set to 7 (corresponding to, for example, 80° C.), and the hot water supply temperature can be set within a range of 1 to 7. Furthermore, when the jumper wire 41 is off (during low-temperature heating operation alone), the maximum set value by the hot water supply temperature control Max setting circuit 54 is set to 6 (for example, 65°C), and the hot water supply temperature control is set in the range of 1 to 6. It will be done as possible. By switching the settable hot water temperature control maximum setting value in this manner by turning on and off the jumper wire 44, the user continues to set and display a temperature at which hot water cannot be supplied, which is an inconvenience.

In addition, in the above embodiment, the case where the temperature setting is switched to two stages by turning on and off the jumper wire was explained.
Of course, by providing a plurality of jumper wires, switching of two or more stages can be performed.

Effects> The present invention has the above configuration, and according to the hot water heating apparatus according to claim 1, the jumper wire in the main body controller is turned on and off by turning on and off the water flow switch, and the temperature of the hot water stored in the can body is adjusted. Since it is possible to switch between high-temperature heating and low-temperature heating, it is possible not only to operate high-temperature heating alone or to operate high-temperature heating and low-temperature heating simultaneously, but also to operate low-temperature heating alone (easily and without any trouble).

Further, according to the hot water heating device according to claim 2, the upper limit that can be set for hot water supply temperature control is changed in response to switching of the hot water storage can body temperature by turning on and off the jumper wire. This prevents the inconvenience of setting and displaying a temperature at which hot water cannot actually be heated.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an apparatus implementing the present invention, FIG. 2 is a control block diagram of the implementation apparatus, and FIG. 3 is a configuration diagram of a conventional apparatus. 11: Hot water storage can body 14: Mixing valve 24: Circulation pump 25: High temperature heating radiator 28: Water flow switch 35: Low temperature heating radiator 40: Main controller 44: Jumper wire 44a: Jumper wire switch 50: Remote controller 51 :Hot water supply temperature control setting circuit 52:Hot water supply temperature control maximum setting circuit Fig. 1 Fig. 2 n Fig. 3

Claims (2)

[Claims] (1) The hot water that has been heat exchanged through the hot water storage tank is circulated to the high-temperature heating radiator using one pump, and the hot water branched from the middle of the circulation path is transferred to the high-temperature heating radiator return path. A hot water heating device configured to circulate hot water to a radiator for low-temperature heating by allowing a portion of the water to mix with the radiator for high-temperature heating, the water flow switch detecting whether or not there is a flow of hot water to the radiator for high-temperature heating, and the water flow switch When it is on, the jumper wire in the main controller is turned on and the water temperature in the hot water storage can is automatically switched to the high temperature heating temperature, and when the water flow switch is off, the jumper wire is turned off and the water temperature in the hot water storage can is changed to low temperature heating. A hot water heating device characterized by being configured to automatically switch to a normal temperature. (2) The hot water that has been heat exchanged through the hot water storage can can be circulated to one or more heating radiators, and
A hot water heating device with a hot water supply function capable of supplying hot water in the hot water storage can through a mixing valve with low temperature water;
The set hot water temperature of the can body is switched by turning on and off the jumper wire in the main controller, and data on the on and off state of the jumper wire is also sent to the remote controller, and the hot water temperature adjustment circuit in the remote controller A hot water heating device characterized in that the upper limit of temperature control that can be set is switched according to whether the jumper wire is turned on or off.