JPH0719603A - Gas fan heater equipped with floor heating function - Google Patents

Abstract

PURPOSE:To operate a gas fan heater without permitting water in a heat exchanger to be boiled even only with hot air heating by providing the heat exchanger between a combustion chamber and an air fan both disposed on a combustion gas passage and further providing a room air intake port on the suction side of the air fan. CONSTITUTION:A combustion chamber 7 is disposed on the right side of a reserve tank 3 in an external casing 2 and a burner 11 is provided in the combustion chamber 7. A heat exchanger 9 is provided at the lower portion of the combustion chamber 7 and an air fan 10 is disposed at the lower portion of the heat exchanger 9. There is further provided a room air intake port 8 on the suction side of the air fan 10 for directly taking in room air. Hereby, the heat exchanger 9 is prevented from being resistance upon blowing off hot air, so that any noise upon heating is prevented from becoming larger and any external appearance trouble is previously prevented from being produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas fan heater with a floor heating function for improving comfort by adding a floor heating function to a gas fan heater.

[0002]

2. Description of the Related Art In this type of gas fan heater with a floor heating function, a method for heating water for floor heating is as follows.
A first method of directly heating a heat exchanger by a combustion flame;
The second method of heating the water by applying a mixed gas, which is a mixture of combustion gas and room air, to a heat exchanger is mentioned.

In the first method, since it is a direct heating system, there is a high risk that the water in the heat exchanger will boil when it is attempted to warm the room by only warm air heating, and in order to avoid this. However, there is a drawback in that you must always use hot air heating and floor heating together.

On the other hand, the second method, which is an indirect heating method, does not have the above-mentioned drawbacks and is being widely adopted from the viewpoint of safety.

[0005]

However, in the second method, since the structure in which the heat exchanger is provided at the outlet of the blower fan is general, the resistance of the wind by the heat exchanger on the outlet side is increased. Grows larger. As a result, there is an inconvenience that the blower fan is inevitably increased in size, noise during heating operation increases, and a problem in appearance occurs.

In view of the above circumstances, the present invention provides warm air heating by providing a heat exchanger between the combustion chamber on the combustion gas path and the blower fan, and providing an indoor air intake port on the suction side of the blower fan. It is possible not only to operate the water in the heat exchanger without boiling it, but also to increase the size of the blower fan, and to make it possible to heat comfortably according to the heating load and usage. The object is to provide a gas fan heater with a heating function.

[0007]

That is, according to the present invention, a burner in a combustion chamber burns gas, the combustion gas and room air are mixed, and the mixed gas is blown by a blower fan from a warm air outlet to warm air. A gas with a floor heating function that simultaneously performs hot air heating by blowing out as heat and heats a heat exchanger that passes water by the combustion gas generated in the combustion chamber, and circulates the hot water in the floor panel to perform floor heating. In the fan heater, the heat exchanger is provided between the combustion chamber and the blower fan.

Further, on the combustion gas inlet side of the heat exchanger,
It is configured by providing an indoor air intake having an opening area corresponding to the maximum combustion amount of the burner.

[0009]

With the above-described structure, according to the present invention, the heat exchanger provided between the combustion chamber and the blower fan heats the warm air when only warm air heating and floor heating or only warm air heating is performed. It acts so as not to become a resistance when blowing out from the wind outlet.

Further, by mixing the indoor air directly taken in through the indoor air intake provided on the combustion gas inlet side of the heat exchanger, the hot air temperature can be adjusted.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of a gas fan heater with a floor heating function according to the present invention, and FIG. 2 is A of FIG.
FIG. 3 is a hot water circuit diagram of the gas fan heater with a floor heating function shown in FIG. The gas fan heater 1 with a floor heating function according to the present invention is shown in FIGS.
As shown in FIG. 3, the outer case 2 is provided, and the reserve tank 3 is suspended in the outer case 2. In the reserve tank 3, water 5 for floor heating is stored, and a float 4 capable of constantly detecting the water level of the water 5 floats. A circulation pump 6 is installed below the reserve tank 3. On the other hand, a combustion chamber 7 is provided on the right side of the reserve tank 3 in FIG. 1, and a burner 11 is provided in the combustion chamber 7. A heat exchanger 9 is installed below the combustion chamber 7, and a blower fan 10 is installed below the heat exchanger 9. Further, as shown in FIG. 2, an indoor air intake 8 for directly taking in indoor air is provided on the combustion gas inlet side of the heat exchanger 9, and the opening area of the indoor air intake 8 is equal to that of the burner 11. It is sized according to the maximum combustion amount. Further, a warm air outlet 18 is formed on the front surface of the outer case 2.

As shown in FIG. 3, in the reserve tank 3, a floor panel 1 is passed through a circulation pump 6 and a heat exchanger 9.
2, a return pipe 13 that returns from the floor panel 12 to the reserve tank 3 is connected, and the return pipe 13 and the return pipe 15 are connected via a connecting pipe 14 embedded in the floor panel 12. It is connected. A warm water sensor 16, a bimetal switch 17 for preventing heating, and a valve 19 are provided in the outflow pipe 13, and a bypass pipe 20 is connected between the outflow pipe 13 and the return pipe 15.

Since the gas fan heater with floor heating function 1 according to the present invention has the above-described structure, when the gas fan heater with floor heating function 1 is installed in a room to perform warm air heating and floor heating. , The burner 11 is ignited, the blower fan 10 is driven, and the circulation pump 6 is driven to move the water 5 in the reserve tank 3 into the outflow pipe 13 and the connecting pipe 14.
And through the return pipe 15 to and from the floor panel 12. Then, the air warmed by the burner 11, that is, the warm air, passes through the vicinity of the heat exchanger 9, and then is blown out from the warm air blowing port 18 to perform warm air heating. At the same time, the heat exchanger 9 is warmed by the passage of this warm air, so that the water 5 circulating in the floor panel 12 becomes hot water, and thus floor heating is performed.

When only the hot air heating is performed using the gas fan heater 1 with a floor heating function, the burner 11 is used.
And blower fan 10 is driven. Then, as described above, the warm air warmed by the burner 11 passes through the vicinity of the heat exchanger 9 and is then blown out from the warm air blowing port 18 to perform warm air heating. In this way, since the gas fan heater with a floor heating function 1 uses the indirect heating method, the water 5 in the heat exchanger 9 will boil even if the room is heated only by warm air heating. This is not the case, and it is not always necessary to use hot air heating and floor heating together.

Moreover, since the heat exchanger 9 is provided not between the blower fan 10 and the warm air outlet 18 but between the combustion chamber 7 and the blower fan 10, the heat exchanger 9 produces warm air. Since it does not become a resistance at the time of blowing out, it is not necessary to enlarge the blower fan 10. Therefore, it is possible to prevent the occurrence of a situation in which noise during heating operation becomes large or a problem in appearance occurs.

Since the indoor air intake 8 is provided on the combustion gas inlet side of the heat exchanger 9, the warm air temperature can be increased by mixing the indoor air taken directly through the indoor air intake 8. It can be adjusted appropriately. Moreover, since the opening area of the indoor air intake port 8 has a size corresponding to the maximum combustion amount of the burner 11,
It is possible to provide comfortable heating that suits the heating load and usage pattern.

[0018]

As described above, according to the present invention,
Burn the gas with the burner in the combustion chamber, mix the combustion gas with the room air, and blow the mixed gas with the blower fan as warm air from the hot air outlet to perform warm air heating and at the same time pass water. In a gas fan heater with a floor heating function that heats a heat exchanger with combustion gas generated in the combustion chamber and circulates hot water in the floor panel to heat the floor, the heat exchanger is provided with the combustion chamber and the air blower. Since it is configured so as to be provided between the fan and the fan, when performing only warm air heating and floor heating or only warm air heating, the heat exchanger provided between the combustion chamber and the blower fan generates warm air. Since it does not become a resistance when blowing out from the hot air outlet, it is possible to operate without heating the water in the heat exchanger by boiling only with hot air heating, and of course enlarge the blower fan. It is not required, therefore, it is possible to provide a floor heating function with gas fan heater capable of preventing the occurrence of a situation in which the noise at the time of heating operation or cause of the problem on a large become or appearance in advance.

Further, on the combustion gas inlet side of the heat exchanger,
When the indoor air intake having an opening area corresponding to the maximum combustion amount of the burner is provided and configured, the indoor air taken in directly through the indoor air intake provided on the combustion gas inlet side of the heat exchanger is mixed. As a result, the temperature of the hot air can be adjusted, so that it is possible to perform heating comfortably according to the heating load and the usage pattern.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a gas fan heater with a floor heating function according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a hot water circuit diagram of the gas fan heater with a floor heating function shown in FIG.

[Explanation of symbols]

 1 …… Gas fan heater with floor heating function 5 …… Water for floor heating 7 …… Combustion chamber 8 …… Indoor air intake 9 …… Heat exchanger 10 …… Blower fan 11 …… Burner 12 …… Floor panel 18: Hot air outlet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadao Otake 2-18, Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A burner in a combustion chamber burns gas,
The combustion gas was mixed with room air, and the mixed gas was blown as warm air from a warm air outlet by a blower fan to perform warm air heating, and at the same time, a heat exchanger for passing water was generated in the combustion chamber. In a gas fan heater with a floor heating function that performs floor heating by heating with combustion gas and circulating hot water in the floor panel, the heat exchanger is provided between the combustion chamber and the blower fan. A gas fan heater with a floor heating function. 2. The gas fan with floor heating function according to claim 1, wherein an indoor air intake having an opening area corresponding to the maximum combustion amount of the burner is provided on the combustion gas inlet side of the heat exchanger. heater.