JPH08338638A - Method and apparatus for controlling operation in hot-water type floor heater - Google Patents

Abstract

PURPOSE: To make uniform the temperature distribution of a hot water mat in a hot-water type floor heater. CONSTITUTION: Three-way valves 7 and 8 are attached to a hot water circulating supply line a and a return line b extending from a heat source machine 1 to a hot water mat 3. The three-way valves 7 and 8 are switched by a control circuit 11 with a timer 12 so that the circulating direction of the hot water is switched at a constant time interval. Thus, the temperature distribution of the hot water mat 3 is made uniform.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method and device for a hot water type floor heating device devised so as to make the temperature distribution in a hot water mat for floor heating uniform.

[0002]

2. Description of the Related Art In the case of a hot water mat (hot water panel) in which hot water generated in a heat source machine is circulated in a hot water pipe for heating, the circulation direction of the hot water is always the same, and therefore, the hot water mat is a matter of course. The entrance side of is hot and changes to cold as it goes out. FIG. 2 shows a conventional hot water floor heating system. 1 is a heat source device, 2 is a cistern, 3 is a hot water mat with a hot water pipe 4 installed inside, and the inlet side of the hot water pipe 4 of this hot water mat 3 is the hot water circulation side line a with the hot water outlet side of the heat source device 1. The hot water is connected to the return side of the heat source device 1 by the hot water circulation return line b, and the hot water is connected to the return side of the heat source device 1.
-> Hot water circulation going line a-> hot water pipe 4 in the hot water mat 3 flows through the hot water mat 3 to return to the heat source device 1 from the hot water circulation return line b. In the figure, 5 is a circulation pump.

[0003]

However, in the case of the above hot water type floor heating apparatus, since the circulation direction of the hot water is always the same, in the hot water mat 3, the hot water gradually increases from the inlet side to the outlet side. The temperature is lowered, and as a result, the temperature distribution becomes non-uniform. This tendency becomes more remarkable as the area of the hot water mat 3 increases, and the temperature distribution becomes more uneven as the heating load increases.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and the constitution thereof is as follows. 1. In a hot water type floor heating system of the type that performs floor heating by circulating hot water generated by a heat source device in a hot water pipe of a hot water mat for floor heating, a hot water circulation forward line and a return line connecting the heat source device and the hot water mat An operation control method in a hot water floor heating apparatus, in which a switching valve is attached to each of the above and the switching valve is controlled by a timer to switch the circulation direction of the hot water at fixed time intervals. 2. A heat source device that generates hot water, a hot water mat formed by piping a hot water pipe, a hot water circulation forward line and a hot water circulation return line that connect the heat source device and the hot water pipe in the hot water mat, and a forward route from the hot water circulation forward line. A branch forward line branched via a side three-way valve and connected to the hot water circulation return line, and a branch return branched from the warm water circulation return line through a return side three-way valve and connected to the hot water circulation forward line An operation control device for a hot water floor heating system, comprising: a line; and a control circuit with a timer for controlling the forward side three-way valve and the return side three-way valve to branch forward line side and branch return line side at regular time intervals. 3. 3. The operation control device for a hot water floor heating system according to the above item 2, wherein the set time of the timer is configured to be freely set, and the control time of the forward and return three-way valves can be controlled according to the heating load. .

[0005]

[Function] The hot water (usually about 60 ° C) generated in the heat source machine enters the hot water mat from the hot water circulation outgoing line via the outgoing side three-way valve, and goes through the hot water pipe in the warm water mat to make a return three-way valve. Return to the heat source machine from the hot water circulation return line via. If this circulation is continued for the time set by the timer, then the control circuit switches the forward side three-way valve to the branch forward line side and at the same time switches the return side three-way valve to the branch return line side. As a result, the hot water flowing out from the heat source machine flows through the hot water circulation forward line → the forward side three-way valve → the forward side branch line → the hot water circulation return line → the hot water mat, and goes through the hot water pipe once to enter the hot water mat → the return side. Branch line → Return side three-way valve → Hot water circulation return line → Heat source machine flows. The control circuit repeats the forward and reverse flows at regular time intervals, thereby making the temperature distribution of the hot water mat uniform. In the hot water mat, if the heating load on one side is large,
It is also possible to cope with the load by setting the time flowing from the side with the larger load to a large value without making the times of the forward and reverse flows the same.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which 1 is a heat source device, 2 is a cistern, 3 is a hot water mat, 4 is a hot water pipe installed in the hot water mat 3, and a is the heat source device 1. A hot water circulation outgoing line connecting the inlet side 3a of the hot water mat 3, b is a hot water circulating return line connecting the outlet side 3b of the hot water mat 3 and the heat source device 1, and 5 is a circulation pump attached to the hot water circulation outgoing line a. . A switching unit 6 includes a forward side three-way valve 7 attached to the hot water circulation forward line a, a return side three-way valve 8 attached to the hot water circulation return line b, and the forward side three-way valve. In the hot water circulation return line b branched from 7, the forward side branch line 9 connected between the return side three-way valve 8 and the warm water mat 3, and the hot water circulation forward line a branched from the return side three-way valve 8, The return side branch line 10 connected between the going side three-way valve 7 and the hot water mat 3, and the going side three-way valve 7 and the returning side three-way valve 8 are controlled at fixed time intervals based on the time set in the timer 12. And a control circuit 11 that operates. 13 in the figure
Is a communication line. In the case of the warm water mat 3 of the embodiment,
The hot water inlet side 3a and the hot water outlet side 3b are offset to the end of the hot water mat 3, but they do not necessarily have to be offset, and basically any position is possible.

In the hot water type floor heating system, the control circuit 11 carries out the following operation control. Approximately 60 generated in heat source unit 1
Switching unit 6 for hot water at ℃ from the hot water circulation line a
The water is sent from the inlet side 3a into the hot water mat 3 via the forward side three-way valve 7, and the hot water pipe 4 is circulated once and returned to the heat source device 1 from the hot water circulation return line b via the return side three-way valve 8. This circulation is continued for the time set in the timer 12, and then the control circuit 11 switches the forward three-way valve 7 to the branch forward line 9 side, and at the same time switches the return three-way valve 8 to the branch return line 10 side. As a result, the warm water discharged from the heat source device 1 flows through the warm water circulation forward line a → the forward side three-way valve 7 → the forward side branch line 9 → the forward hot water circulation return line b → the outgoing side 3b → the warm water mat 3 and the warm water pipe 4 earlier. One cycle in the opposite direction to the inlet side 3a of the hot water mat 3 → the return side branch line 10 → the return side three-way valve 8 → the hot water circulation return line b → the heat source device 1. The control circuit 11 repeats the forward and reverse flows at regular time intervals, thereby making the temperature distribution of the hot water mat 3 uniform. In addition, the flow direction of the warm water can be fixed to only one direction by setting. Switching unit 6 of the embodiment
Is provided separately from the heat source device 1, but the same function as this may be incorporated in the heat source device 1.

[0008]

【The invention's effect】

a. Since the flow of hot water in the hot water mat is automatically switched between forward and reverse, the temperature distribution can be made uniform as compared with the conventional example in which the hot water mat makes one round. b. By switching the flow direction of the warm water, it is particularly effective for uniforming the area of the warm water mat when it becomes large. c. By adjusting the switching timing of the flow direction of the hot water, it is possible to make the temperature distribution uniform even when the heating load is different. d. Just by adding a switching unit, it can be put to practical use with the same construction method as before. e. Energy can be saved by making the temperature distribution of the warm water mat uniform or controlling the temperature distribution range.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a hot water floor heating system according to the present invention.

FIG. 2 is an explanatory view of a conventional hot water type floor heating system.

[Explanation of symbols]

 1 Heat Source Machine 2 System Turn 3 Hot Water Mat 3a Inlet 3b Outlet 4 Hot Water Pipe 5 Circulating Pump 6 Switching Unit 7 Forward Three-way Valve 8 Return Three-way Valve 9 Forward Branch Line 10 Return Side Branch Line 11 Control Circuit 12 Timer 13 Communication Line a Hot water circulation return line b Hot water circulation return line

Claims (3)

[Claims] 1. A hot water type floor heating apparatus of the type in which hot water generated by a heat source device is circulated in a hot water pipe of a hot water mat for floor heating to perform floor heating, wherein hot water circulation connecting the heat source device and the hot water mat. An operation control method in a hot water floor heating system in which hot water circulation directions are switched at fixed time intervals by attaching switching valves to the outgoing line and the return line and controlling the switching valves with a timer. 2. A heat source device for generating hot water, a hot water mat formed by piping a hot water pipe, a hot water circulation forward line and a hot water circulation return line connecting the heat source device and the hot water pipe in the hot water mat, and the hot water. A branch forward line branched from the circulation forward line through the forward side three-way valve and connected to the hot water circulation return line, and a branch forward line branched from the hot water circulation return line through the return side three-way valve to the hot water circulation forward line. Operation in a hot water floor heating system, which comprises a branched return line connected to the forward side three-way valve and a control circuit with a timer for controlling the return side three-way valve to branch forward line side and branch return line side at fixed time intervals Control device. 3. A hot water floor according to claim 2, wherein the set time of the timer is freely set, and the control time of the forward side and return side three-way valves can be controlled according to the heating load. Operation control device in a heating system.