JPH10170005A - Floor heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an instantaneous hot water system and a floor heating system by the same pipeline and reduce the energy loss of the instantaneous hot water system as well as the cost of the floor heating system by using the return hot water of the instantaneous hot water system for floor heating. SOLUTION: A floor heating system is designed to supply hot water to a floor heating panel having a hot water pipeline from a hot water supply device so that a floor heating operation is carried out. The floor heating system comprises as instantaneous hot water system in which hot water from the hot water supply device 1 with a circulating pump incorporated reaches a hot water return joint 11 near a faucet 10 through a hot water supply header 2 and a hot water supply forward pipe 5 and returns to the hot water supply device 1 through a supplied hot water return pipe 6 and a hot water return header 2 from the hot water return joint 11 and a floor heating panel 15 connected to a part on the way to the supplied hot water return pipe 6 to carry out the heat exchanging of the return hot water of the supplied hot water return pipe 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating system for a house, and more particularly, to a floor heating system using a hot water system using a water heater with a built-in circulation pump.

[0002]

2. Description of the Related Art As an instant hot water system for house equipment, a system using a water heater with a built-in circulation pump as shown in FIG. 4 is known. Hot water supply header 2 for water heater 1 with built-in circulation pump
And a hot water header 3 is attached. The hot water supply header 2 and the hot water supply return pipe 6 are connected to the hot water supply header 2 and the hot water supply header 3 through a twin-type sheath 4. Facilities such as bathtub 7, washbasin 8, sink 9, etc. in the house have a faucet 10.
A hot water joint 11 is mounted near the faucet 10. In FIG. 4, reference numeral 17 denotes a water supply pipe, 18 denotes a temperature adjustment switch, and 19 denotes a hot water switch.

When the instant hot water switch 19 is pressed, hot water is sent out from the hot water supply 1, passes through the hot water supply header 2, reaches the hot water supply pipe 5 passing through the twin sheath 4, and reaches the hot water connection 11. When the faucet 10 is opened, hot water is supplied from the hot water return joint 11, and hot water can be obtained instantaneously. When the faucet 10 is closed, the hot water returns from the hot water supply joint 11 to the hot water return header 3 through the hot water supply return pipe 6, is again pressurized and heated by the hot water supply 1, and is sent out from the hot water supply header 2. Thus, the hot water circulates.

The above-mentioned hot water system is independent of a floor heating system as house equipment, and a conventional floor heating system is a system in which a heating wire is arranged on the floor and the floor is heated by heat generated by the heating wire. Alternatively, a method of arranging a hot water pipe on the floor and warming the floor with warm water is generally used.

[0005]

In the above-mentioned hot water system, the heat loss from the hot water supply pipe 5 and the hot water return pipe 6 is large (although it is protected by the heat insulating material, there is no heat loss). Is not possible), and the efficiency is low. Further, the floor heating system using the conventional hot water piping has a problem that labor and cost are required for construction and maintenance management of the floor heating panel and the piping, and the initial investment is increased.

The present invention has been made in view of such a problem, and an object of the present invention is to utilize a return hot water of an instant hot water system for floor heating to provide an instant hot water system and a floor heating system. It is an object of the present invention to provide a floor heating system which can be realized with the same piping and solves both the problem of energy loss of the hot water system and the problem of high cost of the floor heating system.

[0007]

In order to achieve the above object, a floor heating system according to the present invention provides a floor heating system for performing floor heating by supplying hot water from a water heater to a floor heating panel having hot water piping. The hot water from the water heater with a built-in circulation pump reaches the hot water supply joint near the faucet via the hot water supply header and hot water supply pipe, and returns from the hot water supply joint to the hot water supply via the hot water supply return pipe and the hot water supply header. And a floor heating panel connected in the middle of the hot water supply return pipe and exchanging heat with the return hot water of the hot water supply return pipe.

[0008] Specific embodiments of the floor heating system include a hot water changeover switch of a water heater, a temperature control thermistor,
And when the temperature sensor provided on the floor heating panel is connected to the control unit, the output device of the water heater is connected to the output side of the control unit, and the instant hot water switch is switched to instant hot water,
The hot water mode is set to control the operation of the hot water heater output device with priority given to the hot water temperature of the hot water heater, and when the quick hot water changeover switch is switched to floor heating, the input device of the temperature sensor is prioritized and the hot water heater output device The floor heating mode in which the operation control is performed is performed. When the instant hot water switch is turned off, the water heater mode is set as a normal water heater in which the operation of the output device is controlled.

In the floor heating system according to the present invention,
When you press the hot water switch, hot water is sent from the water heater,
From the hot water supply pipe via the hot water supply header to the hot water return joint near the faucet, when the faucet is opened, hot water is supplied from the hot water supply joint and hot water can be obtained instantaneously. When the faucet is closed, the hot water returns from the hot water supply joint through the hot water supply return pipe to the hot water supply header, is again pump-pressed and heated by the water heater, and is sent out of the hot water supply header, whereby the hot water circulates. .

[0010] Heat is exchanged while hot water returns to the floor heating panel provided in the middle of the hot water supply return pipe, and floor heating can be obtained. When the user selects the hot water by using the hot water switch, the input of the water heater temperature control thermistor is prioritized and the hot water mode is selected. When the floor heating is selected, the input of the temperature sensor is prioritized and the floor heating mode is selected. When is selected, a normal water heater mode is set.

The hot water system and the floor heating system are used in the same season (winter) and use the hot water returned from the hot water supply return pipe to efficiently remove the heat energy lost from the pipe. Available.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. The same members or those having the same functions as those in FIG. 4 are denoted by the same reference numerals. FIG. 1 shows a floor heating system according to one embodiment of the present invention. A hot water supply header 2 and a hot water return header 3 are attached to a water heater 1 with a built-in circulation pump. A hot water supply pipe 5 and a hot water return pipe 6 are connected to the hot water supply header 2 and the hot water return header 3 via a twin-type sheath 4.

A faucet 10 is attached to facilities such as a bathtub 7, a wash basin 8, a sink 9 and the like in a house, and a hot water return joint 11 is attached near the faucet 10. The hot water connection 11 has a well-known structure, and includes a first connection portion 1101 and a second connection portion 11 as shown in the circle at the top of FIG.
02 and a third connecting portion 1103 are provided, and the third connecting portion 1103 is connected to the water tap 10, and the first connecting portion 1103 is provided.
A hot water supply pipe 5 is connected to 01, and a hot water return pipe 6 is connected to the second connection portion 1102.

The hot water supply return pipe 6 connected to the second connection portion 1102 is connected to a hot water pipe 16 of a floor heating panel 15 installed on the floor near the bathtub 7 and the washstand 8. Two-way valves 13 and 13 are attached to a connection portion between the hot water pipe 16 and the hot water supply return pipe 6.
A bypass pipe 14 is connected between 13. In addition,
In the illustrated example, the faucet 10 of the sink 9 is provided with the floor heating panel 15 only by the hot water system in which the hot water supply pipe 5 and the hot water supply return pipe 6 are connected to the hot water supply joint 11 via the twin-type sheath 4. Although not installed, floor heating panel 1
Needless to say, 5 can be installed.

In FIG. 1, reference numeral 17 denotes a water supply pipe provided in the water heater 1; 18, a temperature control switch;
Indicates an instant hot water changeover switch. The operation of the floor heating system of the present embodiment configured as described above will be described. When the hot water switch 18 is pressed, hot water is sent out from the hot water supply device 1, and flows from the hot water supply pipe 5 passing through the twin type sheath 4 to the hot water supply joint 11 via the hot water supply header 2. When the faucet 10 is opened, hot water is supplied from the hot water return joint 11, and hot water can be obtained instantaneously.

When the faucet 10 is closed, the hot water flows from the first connecting portion 1101 of the hot water connection 11 to the second connecting portion 1.
102, the hot water is returned from the hot water supply return pipe 6 to the hot water return header 3 through the twin sheath tube 4, and is again pump-pressed and heated by the hot water supply 1 and sent out from the hot water supply header 2, whereby hot water is circulated. It is supposed to. Since the floor heating panel 15 is provided in the middle of the hot water supply return pipe 6, heat can be exchanged with the returning hot water to obtain floor heating.

The hot water system and the floor heating system are used in the same season (winter), and the hot water system has a problem that the heat loss from the hot water supply pipe 5 and the hot water supply return pipe 6 is large. However, in the present embodiment, heat energy lost from the pipeline can be efficiently used by using the floor heating. In addition, when it is desired to use only the hot water system in summer or the like, if the two-way valve 13 is switched to the bypass pipe 14 side, only the hot water system can be used without using the floor heating system.

FIGS. 2 to 4 show an example of a control system applied to the floor heating system of the present invention. FIG.
, A hot water changeover switch 19, a water heater temperature adjustment thermistor 21, and a temperature sensor 22 provided on the floor heating panel 15 are connected as inputs to a control unit 20 having a microcomputer. As an output, a circulation pump 23 which is an output device in the water heater 1 is connected to a newly provided gas proportional control valve 24 (in the case of a gas water heater).

Next, the control operation will be described with reference to the control flow chart of FIG. The user sets the temperature of the water heater temperature control thermistor 21 with the temperature control switch 18 and
Either hot water or floor heating is selected by the quick hot water switch 19. When the hot water is selected, the input of the water heater temperature regulating thermistor 21 is prioritized, and the hot water mode is set to control the output devices such as the circulation pump 33 and the heat source device (not shown). When floor heating is selected, the input of the temperature sensor 22 is prioritized and the floor heating mode is set, and output devices are similarly controlled. When a high-temperature hot water supply is set, the gas proportional control valve 24 is greatly opened so that the input value of the water heater temperature adjustment thermistor 21 follows the target value, and the circulation pump 33 is operated at full output.

When the instant hot water changeover switch 18 is turned off, normal hot water heater normal operation is performed, and a hot water heater mode in which the output device does not operate is set. In the above operation, a combination of selection of priority is also possible. For example, when the hot water supply starts to be detected by operating a hot water supply flow switch (not shown), the hot water supply priority control is performed at this timing, and the floor heating priority control is switched to when the hot water supply stops. You can also.

As described above, one embodiment of the present invention has been described in detail. However, the present invention is not limited to the above-described embodiment, and the design includes the spirit of the present invention described in the claims. Various changes can be made without departing from the invention. For example, the place where the floor heating panel 15 is installed may be a place distant from the water supply facility, and the water heater 1 is not limited to the gas water heater, but may be an electric water heater.

[0022]

As can be understood from the above description, in the floor heating system of the present invention, the hot water system and the floor heating system are realized with the same piping by using the return hot water of the quick water system for floor heating. Energy can be consumed by a single circulation pump, and heat loss in the pipeline can be minimized by using it for floor heating. In addition, the hot water system and the floor heating system need only be installed once, which reduces the work period and the construction cost, and also reduces the maintenance and management by half compared to the case where both systems are separate.

Also, by making it possible to select between hot water supply and floor heating, use according to the purpose becomes possible, and
Arbitrary control such as high-temperature hot water supply and high-temperature floor heating can be performed as required, and a floor heating system having the advantages of an instant hot water system and hot water floor heating can be obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of a floor heating system according to the present invention.

FIG. 2 is a control circuit diagram applied to the floor heating system according to the present invention.

FIG. 3 is a flowchart showing the operation of the control circuit.

FIG. 4 is an external perspective view of a conventional hot water system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water supply device 2 Hot water supply header 3 Hot water supply header 5 Hot water supply pipe 6 Hot water supply return pipe 10 Faucet 11 Hot water connection 13 2-way valve 14 Bypass pipe 15 Floor heating panel 16 Hot water pipe 18 Temperature control switch 19 Hot water switch 20 Control unit 21 Temperature control thermistor 22 Temperature sensor 23 Circulation pump (output device)

Claims (4)

[Claims] 1. A floor heating system in which floor heating is performed by supplying hot water from a water heater to a floor heating panel having a hot water pipe, wherein hot water from a water heater with a built-in circulation pump is supplied via a hot water supply header and a hot water supply pipe. A hot water system configured to return to the hot water supply joint near the faucet and return to the water heater via the hot water supply return pipe and the hot water header from the hot water connection, and connected in the middle of the hot water supply return pipe; A floor heating panel, comprising: a floor heating panel that exchanges heat with the return hot water from the hot water supply return pipe. 2. A hot water changeover switch, a temperature control thermistor, and a temperature sensor provided on the floor heating panel of the water heater are connected to a control unit, and an output device of the water heater is connected to an output side of the control unit. Connected, when the hot water switch is switched to the hot water, the hot water mode of controlling the operation of the output device by giving priority to the hot water temperature of the water heater, and the hot water change switch to the floor heating When
2. The floor heating system according to claim 1, wherein a floor heating mode is provided in which an operation of said output device is controlled by giving priority to an input of said temperature sensor. 3. A gas proportional control valve is connected to an output side of the control unit, and when a high-temperature hot water supply is set, the gas proportional valve is opened so that an input value of the temperature control thermistor follows a target value. 2. The method according to claim 1, wherein:
Or the floor heating system according to 2. 4. A two-way valve is attached to a connection portion between the hot water supply return pipe and the hot water pipe, and a bypass pipe is connected between the two-way valves. 4. The floor heating system according to 2, 3 or 4.