JPH01222161A - Warm air heater - Google Patents

Abstract

PURPOSE:To obtain a warm air heater which can start quickly and is excellent in terms of running cost and cleanness as well, by installing on the way to a warm air circulation passage a regeneration tank which is filled with a sensible heat regeneration material with fins formed on the surface and a stabilized excessive cooling status maintained. CONSTITUTION:Fins 4 are installed to the surface of a regeneration tank 3 laid out in a warm air circulation passage 2 of a warm air heater body 1. The fins 4 are fixed to an internal wall 6 by way of an insulation layer 5. During normal heating, an indoor air sucked up from an indoor suction port 15 by an air circulation fan 14 is heat-exchanged with a high temperature combustion gas generated by a burner 9 in a combustion chamber 10 with a heat exchanger 11, and hereby is turned into warm air and flows into a room through the warm air circulation passage 2 via a louver 16. The heat of the warm air is supplied to a sensible heat regeneration material 7 filled with inside the regeneration tank 3 by way of the fins 4 installed to the regeneration tank 3 and stored. When starting the operation of a warm heater, the heat stored on the sensible heat regeneration material 7 inside the regeneration tank 3 is radiated into the warm air circulation passage by an excessive cooling release means 8 via the fins 4 so that the warm air may be transferred into the room by the radiation from the sensible heat regeneration material 7 and accelerate the start warm air heating.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a heating device equipped with a heat storage tank.

(Conventional technology) Conventionally, as a method of heating the room by circulating hot air, there are open type hot air heaters whose heat source is a combustor that uses gas or kerosene as fuel, and forced air supply and exhaust type hot air heaters. , a hot water circulation type hot air heater, a heat pump type hot air heater using a refrigeration cycle, and an electric hot air type heater using an electric heater as a heat source are generally known.

but,? : As shown in the comparison of each hot air heater in Table 1, when using a hot air heater that uses a combustor as a heat source, the running cost is low when using kerosene, but it takes time to vaporize the kerosene. This causes a slight delay in start-up. In addition, the forced air supply and exhaust type and the hot water circulation type can keep the room clean, but they have the disadvantage of slow start-up due to the large heat capacity of the heat exchanger. The heat pump type has relatively low running costs and good cleanliness, but it takes 90 minutes to start up.
is slow. Electric hot air heaters start up quickly and are clean, but they have the disadvantage of being very expensive to run.

(Left below) Table 1 As shown above, each hot air heater has its advantages and disadvantages.
/Leanness: 7) When running costs are pursued, start-up performance is generally poor, and it was not possible to satisfy these three conditions at the same time.

(Problem to be solved by the invention) In this way, conventional hot air heaters have problems with cleanliness,
2. Pursuing running costs results in slow start-up, cleanliness, and running costs.

The three conditions for the υ property of the rise could not be met.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hot air heater that is quick to start up, has excellent running costs, and has excellent cleanliness.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the hot air heater of the present invention is filled with a latent heat storage material having fins formed on the surface and having a stable supercooled state in the middle of the hot air circulation path. It is characterized by the installation of a heat storage tank.

(Function) In the device configured as described above, 1. During normal heating operation, the heat of the hot air is transferred to the latent heat storage material filled in the heat storage tank via the fins formed on the surface of the heat storage tank. By storing some of the heat.

When the supercooling release means releases the supercooled state of the heat storage material when starting up the warm air heater, heat is immediately released from the heat storage material through the fins on the surface of the heat storage tank, resulting in a normal It is possible to assist with heating up to the time of operation and to speed up start-up.

(Example) An example of the present invention will be described below with reference to the drawings. 1st
The figure is a sectional view showing a hot air heater (forced air supply/exhaust type) according to an embodiment of the present invention, and FIG. It is a diagram.

1 and 2, a heat storage tank 3 arranged in a hot air circulation path 2 of a hot air heater main body 1 has fins 4 on the surface of the tank.
The fins 4 are fixed to the inner wall 6 of the hot air circulation path 2 via the heat insulating material layer 5. FIG. 3 shows a modification of the heat storage tank 3.

That is, the heat storage tank 3 and the fins 4 are made integrally, and the fins 4 have a space, and the space therebetween is also filled with a heat storage material 7, which will be described later. The surface of the inner wall 6 is a glossy surface with low emissivity, and is treated with white paint or polished steel plate, for example. The inside of the heat storage tank 3 is filled with a latent heat storage material 7, and a supercooling release means 8 such as electrode discharge, shape memory alloy, 'a material, etc. is in contact with the latent heat storage material 7 to release the supercooled state. is installed. A combustion chamber 10 containing a burner 9 for burning fuel is installed in the hot air heater main body 1. A heat exchanger 11 is installed at the outlet of the combustion gas of the combustion chamber 10 so as to communicate with the exhaust port 13 of the supply/exhaust pipe 12 .

The air circulation tank 14 takes in air from the indoor air intake port 15 and passes it through the heat exchanger 11 through a louver (warm air outlet).
Send to 16.

Next, the operation of the embodiment of the present invention with the above configuration will be explained. During normal heating 1. Indoor air taken in from the indoor air suction port 15 by the air circulation fan 14 undergoes heat exchange with high-temperature combustion gas generated by the burner 9 in the combustion chamber 10 in the heat exchanger 11, and becomes warm air. . This hot air flows through the hot air circulation path 2 and into the room via a louver (hot air outlet) 16. At this time, the latent heat storage material 7 filled in the heat storage tank 3 installed in the hot air circulation path 2.

Heat from the hot air is supplied and stored through fins 4 installed in the heat storage tank 3.

When the hot air heater starts up at p: 1 During normal heating, the heat stored in the latent heat storage material 7 of the heat storage tank 3 is radiated into the hot air circulation path via the fins 4 by the supercooling release means 8. Then, hot air can be sent into the room by heat radiation from the latent heat storage material 7.

By operating in this manner, hot air heating can be started up quickly. Furthermore, when the latent heat storage material 7 releases heat,
Although the contact fins 4 efficiently exchange heat with the indoor air, since the heat insulating material 5 is provided between the inner wall 6 and the edge fins 4, the heat is conducted to the hot air heater main body 1. There is no heat loss. Furthermore, since the surface of the inner wall 6 is made of a glossy surface with low emissivity, the conduction of heat due to radiation can be reduced, so that more efficient heat exchange can be achieved. The amount of heat storage is the hot air heater body 1
This is because it can be reduced by the amount of conduction loss.

The amount of latent heat storage material 7 can be reduced, and the heat storage tank 3 can be downsized.

FIG. 4 is a sectional view showing an indoor heat exchanger of a hot air heater (heat pump type) according to another embodiment of the present invention.

In the figure, a plate fin heat exchanger 21 is installed in an indoor heat exchanger main body 20. A refrigerant pipe 22 is installed inside the plate fin heat exchanger 21 . The heat storage tank 24 disposed in the hot air circulation path n is fixed to the inner wall 27 of the hot air circulation path 23 by means of fins 25 and a heat insulating material 26 . A latent heat storage material 28 is inside the heat storage tank 24.
A supercooling release means 29 is installed in contact with the latent heat storage material 28 filled with the latent heat storage material 28 to release the supercooled state. The air circulation fan 30 takes in air from the indoor air intake port 31, passes it through the great fin heat exchanger 21, and passes it through the louver (
hot air outlet) 32.

Next, the operation of the embodiment of the present invention with the above configuration will be explained. During normal heating, indoor air taken in from the indoor air suction port 31 by the air circulation fan 30 is heat exchanged by the plate-fin heat exchanger 21 and becomes warm air. This hot air flows into the room through the hot air circulation path n, via the louver (hot air outlet) 32. At this time, the heat of the hot air is supplied to the latent heat storage material 28 filled in the heat storage tank 24 installed in the hot air circulation path 23 through the high-temperature fins 25 installed in the heat storage tank 24, and the heat is stored therein.

When the hot air heater starts up, the heat stored in the latent heat storage material 28 of the heat storage tank 24 during normal heating is radiated by the supercooling release means 29. Due to heat radiation from the latent heat storage material 28)
It can blow hot air into the room.

By operating in this manner, hot air heating can be started up quickly. Since the heat insulating material 26 is provided between the fins 25 and the inner wall 27, the indoor heat exchanger main body 20
It is possible to prevent heat transfer to the air and efficiently produce warm air. Further, by canceling the supercooling canceling means 29 not only at the start-up time υ but also at the time of defrosting during heating operation, it is possible to prevent a decrease in the heating capacity during defrosting.

〔Effect of the invention〕

According to the present invention, the heat stored as latent heat in the heat storage tank filled with the latent heat storage material is immediately released and released by the supercooling release means when the hot air heater is started up, so that normal operation is possible. The heating process can be assisted and the start-up can be made faster. Furthermore, by providing a heat insulating material between the inner wall and the radiation fins, efficient heat exchange can be achieved, making it possible to downsize the heat storage tank.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a hot air heater (forced air supply/exhaust type) according to an embodiment of the present invention, and Fig. 2 is a sectional view showing a heat storage tank portion of the hot air heater according to an embodiment of the present invention. Fig. 3 is a sectional view for explaining a modified example of the heat storage tank according to the present invention, and Fig. 4 is a sectional view of an indoor heat exchanger for a hot air heater (heat pump type) according to another embodiment of the present invention. FIG. 7.28...Latent heat storage material 8.29...Supercooling release means 9...Burner 10...Combustion chamber 1
1...Heat exchanger agent Patent attorney Nori Ken Chika Yudo Hiroshi Uji Figure 1 Melo Figure 2 Figure 3 @4E

Claims (2)

[Claims] (1) A hot air heater characterized in that a heat storage tank with a supercooling release means is installed in the middle of a hot air circulation path and is filled with a latent heat storage material having a stable supercooled state and having fins formed on its surface. (2) The hot air storage tank is fixed to the hot air circulation path with a heat insulating layer interposed between the fins and the inner wall of the hot air circulation path. heater.