JPS62129652A - Water heater with air heating function - Google Patents

Abstract

PURPOSE:To obtain a water heater having an air heating function, by taking out part feed air for a burner, which is to be fed to the outer space of a flame cylinder for use of a cooling air, and by utilizing it for air heating. CONSTITUTION:When a water heater is turned ON, a burner 5 starts combustion, and hot air is supplied from a hot-water pipe 24. At that time, a hot-air damper 42 wholly closes a hot-air opening 40, while cooling controlling dampers 20 and 21 are in open state. The air getting into a cooling air passage 18 from an air duct 37 cools a flame cylinder 7, and at the same time the air itself is heated to the contrary, joining to the gas in an exhaust gas controlling duct 12 through the outer space around a heat exchanger 9. In the cold season such as winter for example, the cooling controlling dampers 20 and 21 are to be kept closed or nearly kept closed, while the hot-air damper 42 is to be kept opened, by manual operation at the time a water supplying operation is started. In such a manner, the air properly heated in the cooling air passage 18 is forcedly discharged to the under space of a boiler body 1 as hot air from the hot-air opening 40 through a louver 47.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an indoor water heater equipped with a hot air heating function.

[Conventional technology]

BACKGROUND ART Conventionally, a hot water supply device equipped with a heating function has a heat exchange coil buried within a can body of a main body of a hot water heater, which is used only for hot water supply or heating.

The hot water boiler body has 1 burner, 1 can, 2 channels, and 2
Some include a burner with two cans and two channels.

Such a hot water boiler body alone does not have the ability to function as a heating machine, and only a system that connects a radiator, such as a panel radiator or a convector installed indoors, can function as a heating machine.

[Problem that the invention seeks to solve]

However, adding a heating function to such a water heater requires a complicated hot water supply and heating system including a radiator, which may impair the basic performance of the water heater. In other words, for water heaters.

This is because additional functions such as blowers and heat exchangers are provided.

This heating system has an extremely high initial cost.

Therefore, the purpose of the present invention is not only to supply hot water with a water heater, but also to
To provide a water heater having a heating function capable of providing hot air heating.

[Failure to solve the problem]

According to the present invention, in a water heater including a combustion chamber, a heat exchanger provided above the combustion chamber and serving as a passage for water, and a burner section for burning fuel in the combustion chamber, the combustion chamber and a cooling passage surrounding the heat exchanger, an air introduction pipe connecting the blower box of the burner section to the cooling passage, and an exhaust connection port for communicating the cooling passage to the outside.

A warm air window characterized by comprising a hot air window formed in a part of a cooling air outer box that defines the outside of the cooling passage, and a hot air volume control means for controlling the flow of hot air in the cooling passage. A water heater having a heating function is obtained.

〔Example〕

1 to 3 show a water heater having a hot air heating function, which is an embodiment of the present invention.

The illustrated water heater has a boiler main body 1 .

Inside the boiler body 1, a cooling air outer box 3 and a burner section 5 are provided. A combustion cylinder 7 having a bottomed shape is provided inside the cooling air outer box 3. The combustion tube 7 is made of a heat-resistant material and a metal plate. A heat exchanger 9 is provided in the opening of the second part of the combustion tube 7. An exhaust collecting pipe 12 is provided between the upper part of the heat exchanger 9 and the top plate 10 of the cooling air outer box 3. On the side peripheral surface of the exhaust pipe 12.

A cooling air flow return port 14 is formed. A top plate 10 of the cooling air outer box 3 is provided with an exhaust connection port 15 that passes through the top surface of the boiler body 1 and extends to the outside.

Combustion tube7. A cooling passage 18 is formed between the heat exchanger 9 and the exhaust pipe 12 and the cooling air box 3. A cooling damper 20.21 is provided near the top of the combustion tube 7 and in the cooling passage 18.

In addition, the heat exchanger 9 includes a water supply pipe 23 and a hot water supply pipe 24.
It is connected from the outside of the cooling outer box 3 through the inside of the cooling passage 18.

On the other hand, the burner section 5 includes a blower box 28 and a blower device 30 arranged on the upper surface of the blower box 28 for introducing air. A draft tube 35 extending to the combustion chamber 32 inside the combustion tube 7 is connected to the ventilation box 28 . At the bottom of the box 28,
An air introduction tube 37 extending to the inside of the cooling passage 18 is connected.

Furthermore, a warm air window 40 is formed in the lower part of the cooling outer box 3. The warm air window 40 is separated from the air introduction tube 37 (
That is, it is formed at the bottom of the cooling outer box 3 (on the opposite side from the air introduction tube 37). The hot air window 40 is provided with a hot air vent 42 whose angle is variable. A hot air outlet 45 is formed in the side wall of the boiler main body 1 facing the hot air window 40.

This hot air outlet 45 is provided with a looper 47 that can be opened and closed. Hot air Danno'I? A hot air guide plate 50 is provided in the space between the hot air damper 42 and the louver 47 to guide the hot air blown from the hot air damper 42 to the hot air outlet 45 .

Now, when the blower device 30 is operated, combustion air is sucked into the box 28, divided into the draft tube 35 of the burner section 5 and the air introduction tube 37, and forced into the combustion chamber 32 and cooling air. It is sent to passage 18.

The air flow in the draft tube 35 serves to generate a combustion flame in the burner section 5. The combustion flame of the burner section 5 is as follows.

It is formed in the combustion chamber 32 in front of the draft tube 35. The combustion gas passes through the heat exchanger 9 and is discharged to the outside of the boiler body 1 through the exhaust manifold 12 and the exhaust connection port 15.

On the other hand, the air flow separated from the air introduction cylinder 37 is as follows.

It passes through the cooling passage 18 to the cooling air flow return opening 14 and the hot air window 40 .

During hot water supply operation, the burner section 5 starts combustion.

Hot water is supplied from the hot water supply pipe 24. At this time, the hot air damper 42 fully closes the hot air window 40 and the cooling control damper 20 is still closed.
．． 21 is in an open state. Therefore, the air introduction tube 3
The air that entered the cooling passage 18 from 7 cools the combustion tube 7, and at the same time, the air itself is heated.
It passes through the outer peripheral part of the heat exchanger 9 and joins the exhaust gas collecting pipe 12 .

That is, at this time, the heated air is approximately 2
Since it passes through the heat exchanger 9 at a temperature exceeding 00°C, it contributes to improving the heat exchange efficiency.

By the way, when the air temperature or the ambient temperature of the boiler main body 1 is low, that is, during the winter season, for example, by manual operation at the same time as the hot water supply operation.

The hot air damper 42 is opened to keep the cooling control dampers 20 and 21 closed or close to closed.

In this way, the air (approximately 100 to 150°C) that has been appropriately warmed inside the cooling passage 18 is transferred to the warm air window 4o and the silencer 4.
7 and is discharged and pressure-fed to the lower part of the boiler body 1 as hot air.

Further, the opening and closing of the cooling control damper 20.21 and the hot air damper 42 can also be performed by electrical control means as shown in FIG. That is, the temperature information signal detected by the thermometer 51 is processed by the control circuit 52 to control opening and closing of the hot air damper 42 and the cooling control damper 20. According to this, since the thermistor 51 is provided, operation by automatic hot air heating is possible. This control circuit 52 can also control the driving of an electromagnetic pump 53 that supplies fuel.

Note that in this case, since the amount of air is divided in advance for hot water supply and hot air, even if hot air heating is performed, there is no effect on the hot water supply efficiency.

In addition, warm air window 40, warm air Dannogu 42 and Hirupa 47
Although the position of cooling passage 1 can be set arbitrarily,
In view of the air temperature inside the boiler 8, it is desirable that the lower part of the boiler body 1 be located near the bottom of the combustion tube 7.

This hot water heater has a hot air heating function.

For example, it is installed in a changing room. When you supply hot water to a bath or bathtub, by the time the bathtub is full.

The inside of the changing room is heated by hot air to the appropriate temperature, so you can change clothes without worrying about the cold even on cold winter days.

Furthermore, since this hot air is dry air that does not contain any water vapor, it can also be used as a simple dryer.

〔Effect of the invention〕

As explained above, according to the hot water heater having the hot air heating function of the present invention, a part of the amount of air blown to the burner is supplied to the outer periphery of the combustion chamber and used as cooling air. Since the water is extracted and used for hot air heating, a water heater with hot air heating function can be obtained without adding a new blower or heating heat exchanger.

In addition, hot air heating can be performed at the same time as hot water supply without impairing the basic performance of conventional small-sized rapid heating water heaters or changing the installation space. Moreover, since there are no special functional parts, there are economic advantages and reliability as a utility product is improved.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of a water heater having a hot air heating function according to the present invention, and Fig. 2 shows another embodiment of a water heater having a hot air heating function according to the present invention. Side sectional view, 3rd
2 is a perspective view showing the external appearance of the water heater having a hot air heating function shown in FIG. 2, and FIG. 4 is an operation circuit diagram of a damper used in the water heater having a hot air heating function according to the present invention. 1; Boiler main body, 3; Cooling outer box, 5; Burner part, 7;
Combustion tube, 9; heat exchanger, 12; exhaust collection t1n) tube, 14; cooling air flow return lo, 15; exhaust connection port,
18; Cooling passage, 20, 21; Cooling control dan □,
28; ventilation box; 30; ventilation device. 32; Combustion chamber; 35; Draft tube; 37; Air introduction tube; 40; Hot air window; 42; Hot air vent. 45: Hot air outlet, 47: Louver, 51: Thermistor. Procedural amendment - (voluntary) February 27, 1988

Claims (1)

[Scope of Claims] 1) A water heater including a combustion chamber, a heat exchanger provided above the combustion chamber and serving as a passage for water, and a burner section for burning fuel in the combustion chamber, a cooling passage surrounding the combustion chamber and the heat exchanger; an air introduction tube connecting the blower box of the burner section to the cooling passage; and an exhaust connection port for communicating the cooling passage to the outside; A warm air window characterized by comprising a hot air window formed in a part of a cooling air outer box that defines the outside of the cooling passage, and a hot air volume control means for controlling the flow of hot air in the cooling passage. A water heater with a heating function. 2) The hot air volume control means has a hot air damper that can turn on and off the flow of hot air to the hot air window, and a cooling control damper provided at a position downstream of the hot air window in the cooling passage. A water heater having a hot air heating function according to claim 1. 3) The water heater having a hot air heating function according to claim 1, wherein the hot air volume control means has a variable angle louver provided on the hot air window. 4) A water heater having a hot air heating function according to claim 2, wherein the hot air damper and the cooling control damper are interlocked with each other.