JP2017003159A - Hot water type floor heating system - Google Patents

Abstract

TECHNICAL PROBLEM: To improve a rising operation at a slave hot water mat of a dressing room at a floor heating system in which a main hot water mat laid at a habitable room side a slave hot water mat laid at a dressing room side are connected by a series circulation circuit.SOLUTION: A hot water supply port 1a of a heat source machine 1 and a main hot water mat 2 are connected by a main hot water outgoing circuit 3, a hot water outlet 2b of the main hot water mat 2 and a hot water inlet 4a of the slave hot water mat 4 are connected by a communication circuit 5, and a hot water outlet 4b of the slave hot water mat 4 and a hot water return port 1b of the heat source machine 1 are connected by a main hot water return circuit 6. Upon formation, a hot water reverse feeding hot water outgoing circuit 3a and a hot water reverse feeding return circuit 6a are fixed under their crossed state between the main hot water outgoing circuit 3 and the main hot water return circuit 6 to form a cross circuit, flows at the reverse feeding hot water outgoing circuit 3a and the return circuit 6a are changed over in reversing flow under a valve operation, hot water of about 60°C is supplied to the slave hot water mat 4 to shorten a rising-up time of the slave hot water mat 4.SELECTED DRAWING: Figure 1

Description

The present invention is a hot water type floor in which a main hot water mat laid in a living room etc. and a subordinate hot water mat laid in a dressing room, toilet, corridor, etc. can be operated simultaneously in a series hot water circulation circuit using a single heat source device. It relates to the heating system.

In the case of the conventional hot water type floor heating system described above, in which the sub warm water mat is attached to the main hot water mat, the hot water generated at the heat source machine first goes around the main hot water mat, Since it is composed of a series of hot water circulation circuits that return to the heat source machine through the subordinate hot water mat, there are the following problems.

When operating the main hot water mat and the subordinate hot water mat at the same time, the low temperature water of about 49-53 ° C. that has radiated heat is circulated in the sub hot water mat through the main hot water mat. In this case, the amount of heat is insufficient and the so-called start-up is poor, and it is inconvenient that the waiting time becomes long if the temperature of the dressing room is to be raised quickly to take a safe bath.

As means for solving the drawbacks of a heating system that drives a plurality of hot water mats simultaneously using a single heat source device, Patent Document 1 discloses that hot water mats in each room are arranged in parallel with respect to the hot water circulation circuit. In addition, the ease of warming of each room is obtained in advance, the amount of hot water supplied to each hot water mat from the heat source machine is calculated by the controller based on this value, and the amount of hot water reaching the hot water mat in each room is FF method The heating system controlled by is introduced.

However, since this control method controls the room temperature with the amount of hot water, it is necessary to determine the amount of hot water supplied from the heat source unit as the maximum value when designing all terminals simultaneously. At the same time, the controller design becomes complicated.

In the case of the cited document 1, since the heat source machine and each hot water mat are connected by independent parallel circuits, the piping work becomes complicated and the equipment cost also increases.

JP-A-8-338636

An object of the present invention is to improve the start-up of a subordinate hot water mat and improve the equipment cost in a floor heating system that can simultaneously operate a plurality of hot water mats in a primary and subordinate relationship using a single heat source device. It is an object of the present invention to provide a hot water type floor heating system capable of reducing the temperature.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a hot water type floor heating system, wherein a main hot water mat and a subordinate hot water mat are connected to a single heat source unit by a series hot water circulation circuit. In the system, in the hot water circulation circuit, there is provided a cross circuit for switching between the return and return of the hot water between the hot water return circuit connecting the heat source machine and the main hot water mat and the hot water return circuit connecting the subordinate hot water mat and the heat source machine. A switching valve is attached to this cross circuit, and hot water discharged from the heat source machine by this valve operation is supplied to the subordinate hot water mat side first, and then returns to the heat source machine via the main hot water mat side. It is characterized by having been established.

The invention according to claim 2 is the hot water floor heating system according to claim 1, wherein the main hot water mat is laid in a living room, and the subordinate hot water mat is laid in a dressing room, a toilet, a hallway, or a front door. It is characterized by that.

The invention according to claim 3 is the hot water floor heating system according to claim 1 or 2, wherein the valve attached to the cross circuit is an electromagnetic valve, and the flow of hot water in the cross circuit is switched. It is performed by switching operation of the solenoid valve, and this switching operation of the solenoid valve is automatically controlled by a controller.

Further, the invention according to claim 4 is the hot water type floor heating system according to any one of claims 1 to 3, wherein the controller causes the controller to circulate hot water from the main hot water mat side first. A reverse feed circulation mode for circulating hot water from the mode and the subordinate hot water mat side is prepared, and the priority of this mode is selectively settable.

The invention according to claim 5 is the hot water type floor heating system according to any one of claims 1 to 4, wherein the controller has a predetermined time when the reverse circulation mode is first selected. An operation recovery circuit for switching from the reverse feed circulation mode to the forward feed circulation mode when the time elapses is incorporated.

As described above, the invention of the present application can reverse the circulation of hot water by switching the valve in the series hot water circulation circuit from the heat source machine to the subordinate hot water mat via the main hot water mat and then returning to the heat source machine. Configured to be possible.

As a result, when reverse feeding is performed, warm water of about 60 ° C. circulates first on the dependent hot water mat side, so that the rising on the dependent hot water mat side can be greatly improved.

(A) is an explanatory view of an example in which a backwater circulation is possible in a warm water type floor heating system in which a warm water circulation circuit is configured in a series circuit, and (B) is a control so that warm water from a heat source device is fed back. It is explanatory drawing when doing. The example of the attachment of the valve | bulb for switching the flow of warm water is shown, (A) is an example of serial circuit establishment, (B) is an example of reverse transmission circuit establishment. It is explanatory drawing which shows the change of the room temperature of the main hot water mat side and the subordinate hot water mat side in the forward feed circulation operation and the reverse feed circulation operation.

Example 1 will be described in detail with reference to FIGS.

1A and 1B, reference numeral 1 denotes a heat source machine, reference numeral 2 denotes a main hot water mat, and reference numeral 3 denotes a main connecting the hot water supply port 1a of the heat source machine 1 and the inlet 2a of the main hot water mat 2. The sub-warm water mat 4 is a sub-warm water mat. The sub-warm water mat 4 has an outlet 2b and an inlet 4a of the main hot water mat 2 connected by a communication circuit 5, and a hot water outlet of the sub-warm water mat 4. 4 b is a DC circuit that returns to the return port 1 b of the heat source unit 1 via the main hot water return circuit 6.

8a and 8b are valves attached to the main hot water return circuit 3, 8c is a valve attached to the main hot water return circuit 6, and the valves 8a and 8c are connected by a reverse forward circuit 3a. Reference numeral 8b denotes a reverse feed back circuit 6a which is directly connected to the main hot water return circuit 6. The reverse feed circuit 3a and the reverse feed back circuit 6a form a cross circuit.

In the first embodiment, during normal feed circulation, as shown by an arrow in FIG. 1 (A), the hot water sent from the heat source unit 1 passes through the main hot water mat 3 and the main hot water mat 2 and is connected to the communication circuit. 5 enters the subordinate hot water mat 4 and returns to the heat source machine 1 via the main hot water return pipe 6 after one round.

In the case where the hot water is reversely circulated in order to improve rising at the subordinate hot water mat 4 side, the heat source machine 1 is switched by switching the valves 8a, 8b, 8c to the reverse circulation side as shown in FIG. The hot water sent out from the main hot water outgoing pipe 3 enters the main hot water return pipe 6 side via the reverse feed circuit 3a via the valve 8c, and enters the main hot water mat 4 via the communication circuit 5 via the communication circuit 5. It enters into the hot water mat 2, the main hot water going-out pipe 3 is fed back, enters the main hot water return pipe 6 from the valve 8 b via the reverse feed-back circuit 6 a, and returns to the heat source unit 1.

As a result, since the warm water of about 60 ° C. circulates in the subordinate hot water mat 4 first, the rise on the subordinate hot water mat 4 side is greatly improved.

In the second embodiment, as shown in FIG. 2A, an ON / OFF valve 10a is attached to the main warm water return circuit 3, an ON / OFF valve 10b is attached to the main warm water return pipe 6, and the reverse feed circuit 3a Switching valves 9a and 9b are respectively attached to the reverse feed back circuit 6a, and by switching these valves, the forward feed circulation is established in FIG. 2A and the establishment of the reverse feed circulation is controlled in FIG. 2B.

In the third embodiment, as shown in FIG. 2 (B), the valve 9a is attached to the main warm water forward pipe 3, the valve 9b is attached to the main warm water return circuit 6, and the valve 10a is attached to the reverse forward circuit 3a. A valve 10b is attached to the return circuit 6a, and backflow circulation is enabled as indicated by an arrow by switching these valves 9a, 9b and 10a, 10b.

All the valves are electrically operated, and their switching is automatically controlled by a controller (not shown).

FIG. 3 shows a temperature rise curve of a room in which the main hot water mat 2 and the subordinate hot water mat 4 are laid when priority is given to the flow of the hot water on the subordinate hot water mat 4 side. A room temperature rise curve on the side, B is a room temperature rise curve on the dependent hot water mat 4 side.

When hot water of about 60 ° C. is supplied from the heat source unit 1 and 30 minutes have passed, the room temperature on the main hot water mat 2 side is 28.4 ° C., and the room temperature on the dependent hot water mat 4 side is 27.2 ° C.

Here, when the flow of the hot water is switched to the subordinate hot water mat 4 side, the room temperature on the subordinate hot water mat 4 side becomes 29.4 ° C. after about 15 minutes, and thereafter maintains around 29.5 ° C.

On the other hand, the room temperature on the main hot water mat 2 side was 28.4 ° C., but after about 15 minutes it dropped to 28 ° C. and after 30 minutes it dropped to about 27.6 ° C. It changes around 6 ℃.

The transition of the temperature of the main hot water mat 2 is due to the heat storage at room temperature of about 28.2 ° C. at the time of switching.

DESCRIPTION OF SYMBOLS 1 Heat source machine 2 Main hot water mat 3 Main hot water going-out circuit 4 Subordinate hot water mat 5 Communication circuit 6 Main hot water return circuit 8a, 8b, 8c Valve 9a, 9b Valve 10a, 10b Valve

Claims (5)

In a floor heating system in which a main hot water mat and a subordinate hot water mat are connected to a single heat source unit by a series of hot water circulation circuits, the hot water return circuit connecting the heat source unit and the main hot water mat and the subordinates in the hot water circulation circuit A cross circuit is provided between the hot water return circuit connecting the hot water mat and the heat source machine to switch between the return and return of the hot water, and a switching valve is attached to this cross circuit, and the hot water discharged from the heat source machine by this valve operation is the first. A hot water type floor heating system configured to be able to establish a reverse circulation circuit that is supplied to the subordinate hot water mat side and then returns to the heat source machine via the main hot water mat side. The hot water floor heating system according to claim 1, wherein the main hot water mat is laid in a living room, and the subordinate hot water mat is laid in a dressing room, a toilet, a hallway, or an entrance. The valve attached to the cross circuit is a solenoid valve, the hot water flow in the cross circuit is switched by the switching operation of the solenoid valve, and the switching operation of the solenoid valve is automatically controlled by a controller. The hot water type floor heating system according to claim 1 or 2. The controller is provided with a forward feed circulation mode for circulating hot water from the main hot water mat side and a reverse feed circulation mode for circulating hot water from the subordinate hot water mat side, and the priority of this mode is selectively set. The hot water floor heating system according to any one of claims 1 to 3, wherein the floor heating system is free. 2. The controller includes an operation recovery circuit for switching from the reverse feed circulation mode to the forward feed circulation mode when a predetermined time elapses when the reverse feed circulation mode is selected first. The hot water type floor heating system of any one of -4.

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