JPS6023728A - Hot-water floor heating apparatus - Google Patents

Abstract

PURPOSE:To obtain a hot-water floor heating apparatus of which operating efficiency is increased and in which the rise of room temperature is quickened by hot-water, by installing a heating source, which is provided with a hot-air fan and an incomplete combustion preventive device, inside the building. CONSTITUTION:A sensor 11 made of SnO2 is provided in the neighborhood of a combustion surface 10 in order to prevent incomplete combustion, and the sensor is connected to an automatic quenching device. A hot-air fan 13 is provided under the lower end of a hot-air passage 12. A heating source 1, connected to a hot-water panel by a forward pipe 3 and a return pipe 4, is installed inside the building. When an operation is started, a circulating pump 8 is actuated to circulate water. At the same time, combustion is started and the water is heated. Normally, combustion gas, passing through a combustion chamber 6, transmits heat to the water in a heat exchanger 5 and the gas lowered the temperature by losing its heat is exhausted from a vent port 15. During this time, a hot-air fan 13 is stopped. The air in a room can be heated in a short time by turning round the hot-air fan 13 and introducing combustion gas to a hot-air blow-off port 14 from the combustion chamber 6 passing through a hot-air passage 12. The temperature in the heating source which is installed inside the building will scarcely be lowered down to the outdoor temperature, so that the temperature can rise in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a hot water floor heating system installed indoors.

Structure of a conventional example and its problems A conventional hot water floor heating system had a structure as shown in FIG. In the figure, 1 is a heat source device, and 2 is a hot water panel for floor heating. Heat source 1 and hot water panel 2 are connected to outgoing pipe 3 and returning pipe 4
They were connected to form a hot water circulation circuit. The heat source 1 includes a heat exchanger 5, a combustion chamber 6, a burner 7, and a circulation pump 8, and the circulation pump and the heat exchanger 5 are connected by a water pipe 9. A heat source 1 is usually installed outdoors and connected to an indoor hot water panel by an outgoing pipe 3 and a returning pipe 4.

In the hot water floor heating system having the above configuration, when the heat source 1 is first operated, the circulation pump 8 rotates and water starts to circulate, and at the same time the burner is ignited and combustion starts. In the heat exchanger 5, heat is transferred from the combustion gas to water to produce hot water. This hot water is carried to the hot water panel 2, and on this surface the heat of the hot water is radiated into the room. The water, which has become low temperature due to heat radiation, returns to the heat source 1 through the return pipe 4.

Hot water floor heating is performed by the above operation, but first of all, it is dangerous if incomplete combustion occurs in the heat source, so since it is installed outdoors, the temperature of the entire device drops to the outside temperature. Therefore, even after starting operation, it took 5 to 10 minutes for the water to reach a predetermined temperature. In addition to dissipating heat from the equipment to the outside air.

Since the heat of the exhaust gas was also discarded, the thermal efficiency of the equipment alone was 60.
It was about %. The above system has the disadvantage that the total operating efficiency drops to about 50% due to the addition of heat radiation from the circulation pipe.

Furthermore, the limit for hot water panels is to raise the surface temperature to about 30° C., and the amount of heat transferred from this relatively low-temperature surface to the indoor air is about 100 KcaJ/h per 1 m 2 of floor area. Therefore, in a 4.5 tatami room, the amount of heat transferred is 1500 Kcai.
! /h is the limit, so the room temperature rises slowly, which is a major problem with hot water floor heating.

Purpose of the Invention The present invention is intended to improve the above-mentioned conventional problems, and is to improve operating efficiency by installing a heat source indoors that is equipped with an incomplete combustion prevention device and a warm air fan, and to reduce the rise in room temperature by using hot water. The purpose of the present invention is to provide a hot water floor heating system that can be heated quickly.

Structure of the Invention In order to achieve the above object, the present invention includes a combustion chamber facing a burner, a heat exchanger facing the combustion chamber, and an incomplete combustion prevention device provided in the combustion chamber to control fuel supply to the burner. A hot air fan is installed in the hot air path leading to the sensor and the combustion chamber as a heat source, and the hot water is connected to the heat exchanger in this heat source via an outgoing pipe, a return pipe, and a circulation pump, and is installed on the floor. The panels constitute a hot water floor heating system.

DESCRIPTION OF EMBODIMENTS A hot water floor heating system according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In these figures, the same members as those in FIG. 4 are given the same numbers.

In the figure, a circulation pump connected to a return pipe 4 is connected to a heat exchanger 5 through a water pipe 9. A combustion chamber 6 is provided in the lower part of the heat exchanger 5, and a burner 7 is mounted with the combustion surface 10 vertical. An incomplete combustion prevention sensor 11 made of Sn○2 is provided near the combustion surface 10, and is connected to an automatic fire extinguishing system (not shown). The combustion chamber 6 communicates with a hot air passage 12 and serves as an exhaust gas passage. A warm air fan 13 is provided in this passage. Further, 164 is a hot air outlet, and 15 is an exhaust port. With the above configuration, there is a heat source 1, which is installed indoors and communicated with a hot water panel 2 through an outgoing pipe 3 and a returning pipe 4.

When the operation is started with the above configuration, the circulation pump 8 is first started to circulate water as in the conventional case. At the same time, combustion begins and hot water is produced. Normally, as shown in FIG. 2, the combustion gas passes through the combustion chamber 6, transfers heat to water in the heat exchanger 5, becomes cooled, and is discharged from the exhaust port 15. At this time, the warm air fan 13 is stopped.

This operation is almost similar to the heat source of a conventional hot water floor heating system. Figure 3 shows the operation of hot air blowing, which is significantly different from conventional methods (
(hereinafter referred to as warm air mode). In this case, the hot air fan 13 is rotated to guide the combustion gas from the combustion chamber 6 through the hot air path 12 to the hot air outlet 14, thereby rapidly heating the air in the room. At this time, there is no problem even if the circulation pump 8 is not rotated, but if it is rotated, the water exchanges heat with the indoor air and gradually heats the floor surface, so it can also be used to preheat the floor heating. be. In this example, the heat source is equipped with an incomplete combustion prevention device, so even if it is installed indoors, it can cope with abnormal situations (for example, oxygen deficiency) (automatically extinguishes).
. Therefore, a heat source installed indoors rarely drops to the outside temperature and rises quickly. In addition, the installation work is very simple, and construction costs can be significantly reduced. Furthermore, when the room is cold, such as when heating is started, the warm air mode first directly heats the air in the room, thereby speeding up the rise in room temperature. In this case, the amount of combustion is not related to hot water temperature, so it can be increased several times as much as in hot water floor heating. Therefore, the rise in room temperature can be further accelerated. After the room temperature rises to about 18 to 20°C, the mode can be switched to the normal floor heating mode to provide the comfort of floor heating. Also, when looking at running costs, since the heat source is installed indoors, it is significantly improved compared to conventional methods (operating efficiency is 100%).
%close). Furthermore, when compared to an indoor exhaust hot air fan called a fan heater, the combination of hot air mode and floor heating mode allows the temperature distribution in the room to be high on the floor and low on the ceiling, making it the most energy-saving hot water floor. It has something that enables heating.

(1) Even if abnormal combustion occurs, it can be detected by the incomplete combustion prevention sensor and the fuel supply to the burner can be controlled, so the heat source can be installed indoors.

(2) Since the heat source is installed indoors, the temperature of the heat source does not drop to the outside temperature when the fire is extinguished. Therefore, the temperature of the circulating water rises quickly during operation.

(3) The warm air fan can directly heat the air in the room, increasing the amount of combustion compared to floor heating, so the room temperature can rise faster than before when heating starts.

(4) Since the heat source can be installed indoors, the operating efficiency of floor heating can be increased to nearly 100%.

[Brief explanation of the drawing]

Figure 1 is a partial cross-sectional configuration diagram of a hot water floor heating system that is an embodiment of the present invention, Figure 2 is a cross-sectional view schematically showing the flow of combustion gas during normal operation of the system, and Figure 3 is the same diagram. FIG. 4 is a cross-sectional view schematically showing the flow of combustion gas and air in hot air mode, and FIG. 4 is a partial cross-sectional configuration diagram of a conventional floor heating device. 1...Heat source, 2...Hot water panel, a...
... Outgoing pipe, 4... Return pipe, 5... Heat exchanger, 6... Combustion chamber, 7... Burner,
8...Circulation pump, 11...Incomplete combustion prevention sensor, 12...Hot air path, 13...
・Warm air fan. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 5 Figure 4

Claims (1)

[Claims] a combustion chamber facing the burner; a heat exchanger facing the combustion chamber; an incomplete combustion prevention sensor installed in the combustion chamber to control fuel supply to the combustion chamber; An indoor heat source consisting of a hot air fan installed in a continuous hot air path and a hot air outlet installed at the end of the hot air path, and a floor connected to the heat exchanger through an outgoing pipe, a returning pipe, and a circulation pump. A hot water floor heating system consisting of hot water panels installed on the surface.