JPS61149738A - Hot-water floor heating device - Google Patents

Abstract

PURPOSE:To contrive to perform the water returning work in a hot-water floor heating pannel to a tank and the water level rising work in the tank with continuous pump driving by a method wherein the hot-water floor heating pannel is contracted by changing-over a flowing direction change-over means to the inverse direction against a normal operation direction. CONSTITUTION:In case of the lowering of water level in a tank 4 during an operation, initially, a four-way valve 9 is changed-over to the direction communicated between ports (a), (c) and ports (b), (d), then a flowing direction in a hot-water circulating channel 8 is circulated in order the tank 4, a floor heating pannel 7, a heat exchanger 3, a pump 6 and the tank 4. At this time, by opening an air vent valve 11, the tank 4 inside pressure shows a tendency to the atmospheric pressure. Thereby, the floor heating pannel 7 inside pressure is made negative pressure due to the suction lift of the pump 6, then the floor heating pannel 7 is contracted. Therefore, the water in the floor heating pannel 7 is returned to the tank 4, the water level in the tank 4 is raised. At the raising of the water level in the tank 4, the air vent valve 11 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a hot water floor heating system using a flexible hot water floor heating panel that expands in response to internal pressure and increases its internal volume.

[Background technology]

Conventionally, as this type of hot water floor heating system, there is one that utilizes the exhaust heat of a pot-type kerosene stove 1, as shown in FIG. In this system, water is heated by a heat exchanger 3 installed in a chimney 2 of a kerosene stove 1, and the hot water is circulated through a floor heating panel 7 through a hot water circulation path 8 to perform floor heating. A tank 4 and a pump 6 are interposed in the hot water circulation path 8. The tank 4 has a log supply port 4S to which a cap 5 is attached. The floor heating panel 7 expands in response to internal pressure to increase its internal volume. For example, the floor heating panel 7 has a cushioning property in which wavy vertical monofilaments and horizontal monofilaments made of differential plastic are interposed between two sheets made of a differential plastic sheet with a woven fabric adhered to the inner surface. Consisting of

In such a hot water floor heating system, when the water level in the tank 4 drops, conventionally, water is replenished into the tank 4 to maintain the water level above a certain level in order to ensure stable operation. However, according to water supply, there were the following problems.

That is, since this hot water floor heating system uses the floor heating panel 7, the cap 5 of the tank 4 is tightened to prevent the water level in the tank 4 from falling or rising when the pump 6 is turned on or off. Must be circulated in a closed circuit. If the average pressure in the hot water circulation path 8 is atmospheric pressure, if the cap 5 is opened with the pump 6 in the ON position, the water level in the tank 4 will drop and air will enter the pump 6. When refilling the tank 4 with water, the pump 6 must be turned off. Moreover, if the cap 5 is opened immediately after the pump 6 is turned off, the water accumulated in the heat exchanger 3 will evaporate and the hot water will return to the tank 4, which is dangerous.
When refilling the tank 4 with water, it was necessary to turn off the stove 1 and wait for the temperature of the heat exchanger 3 to drop before doing so. Therefore, it took a lot of time to replenish water, and the floor heating had to be stopped during that time, making it inconvenient to use.

Here, if the average pressure in the hot water circulation path 8 is higher than atmospheric pressure, if the cap 5 is opened with the pump 6 ON+2), the probability that air will enter the pump 6 will decrease, but the floor heating Since plastic material is used for the panel 7, if water pressure is applied within the floor heating panel 7, there is a risk that the water inside the floor heating panel 7 will be released to the outside due to water permeation. Therefore, it is considered difficult to maintain the average pressure within the hot water circulation path 8 above atmospheric pressure.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hot water floor heating system that can raise the water level in a tank by removing air from the tank without replenishing water.

Disclosure of C, R Ming] The hot water floor heating system of the present invention includes a flexible clinical floor heating panel that expands in response to internal pressure and increases its internal volume, a heat exchanger, a tank having air-bleeding pulp, and a hot water floor heating system that uses the hot water floor heating system. A hot water circulation path that circulates water between the panel, the heat exchanger, and the tank, a pump for circulation of the flooded water circulation path, and the connection direction of the discharge port and suction port of this pump to the hot water circulation path are switched between forward and reverse directions. It is equipped with a flow direction switching device.

According to this configuration, when the water level in the tank is low and it is light, without replenishing water, the water in the submerged floor heating panel is returned to the tank by venting air as follows, and the water level in the tank is raised. I can do it. That is, the flow direction switching means is switched to the direction opposite to that during normal operation, and the flow is circulated in the order of tank → water repellent floor heating panel → heat exchanger → pump → tank. At this time, if you open the air vent pulp, the inside of the tank will become atmospheric pressure. As a result, the pressure inside the hot water floor heating panel becomes negative pressure 1 due to the suction head of the pump, and [
Water floor heating panels shrink. Therefore, the water in the hot water floor heating panel returns to the tank, and the water level in the tank rises.

This series of operations can be performed while the pump remains pivoted. Therefore, compared to conventional water replenishment, raising the water level in the tank can be done more easily and in a shorter time.

! I! Embodiment An embodiment of the present invention is shown in FIGS. 1 and 2. This hot water floor heating system has a hot water circulation path 8 provided with a west valve 9 serving as a flow direction switching device, a tank 4 provided with an air vent hole 10, and an air vent pulp 11 attached thereto. The rest of the configuration is the same as the example shown in FIG. 3, so the same parts are given the same reference numerals and the explanation thereof will be omitted. The four-way valve 9 connects two boats a-d'ft: one at the discharge port 6 and the other at the suction port 6b of the pump 6, and the direction of connection of the pump 6 to the hot water circulation path 8 is determined by a switching operation. The opposite is true.

Operation FIG. 1 shows the case when water is initially introduced into the hot water circulation path 8 and during normal operation, and the westward valve 9 is open between go (a) and b and between boats o and d. Therefore, the circulating water goes from tank 4 to bonder 6 to heat exchanger 3 to floor heating panel 7.
→ Circulate in the order of tank 4.

If the water level in the tank 4 drops during operation, raise the water level as follows. First, as shown in FIG. 2, the west valve 9 is switched to open the water between boats a and a, and between boats b and d, thereby reversing the flow direction of the water circulation path 8. That is, tank 4 → floor heating panel 7 → heat exchanger 3
→ Pong 6 → Circulate at the head of tongue 4. At this time,
When the air vent pulp 11 is opened, the inside of the tank 4 tends to reach atmospheric pressure. As a result, the pressure inside the floor heating panel 7 becomes negative pressure due to the suction lift of the pump 6, and the floor heating panel 7 contracts. Therefore, the water in the floor heating panel 7 returns to the tank 4, and the water level in the tank 4 rises. When the water level in the tank 4 rises, the air vent pulp 11 is closed. This completes the work of removing air from the tank 4.

This series of operations can be performed while the pump is running. Therefore, the work of raising the water level in the tank 4 can be done more easily and in a shorter time than in the case of conventional water replenishment.

In the above embodiment, - number of four-way valves 9 were used, but a plurality of pulps may be combined to form the flow direction switching means.

〔Effect of the invention〕

The hot water floor heating system of the present invention has the advantage that by removing air from the tank, the water level in the tank can be easily raised without replenishing water.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of an embodiment of the present invention when water is first added, Fig. 2 is an explanatory diagram of the configuration when air is removed, and Fig. 3 is an explanatory diagram of the configuration of a conventional example. . 1... Oil stove, 2... Chimney, 3... Heat exchanger, 4... Tank, 6... Pump, 7... Floor heating panel, 8... Water leakage circuit, 9 ... Four-way valve (flow direction switching device f!t), 11 ... Air vent valve 11: "], -. Fig. 1 Fig. 2

Claims (1)

[Claims] A flexible hot water floor heating panel that expands in response to internal pressure to increase its internal volume, a heat exchanger, a tank having an air release valve, and a hot water circulation path that circulates water between the hot water floor heating panel, the heat exchanger, and the tank. A hot water floor heating system comprising: a pump for circulating hot water in a hot water circulation path; and a flow direction switching device that switches between forward and reverse directions in which a discharge port and a suction port of the pump are connected to the hot water circulation path.