JPH03267621A - Heating apparatus - Google Patents

Abstract

PURPOSE:To realize a comfortable heating by a reasonable combination of warm air and radiation heat by a method wherein a combustion gas distribution means is controlled in response to an output from a radiation heat sensor and a distribution control means is provided to adjust the distribution ratio of a combustion gas for producing warm air to that for producing radiation heat. CONSTITUTION:At the start of operation, since the sensing temperature of a radiation heat sensor 21 is low, a damper 4 is actuated per instruction from a distribution control means 22 to supply a large amount of combustion gas to a first gas passage 5 provided with a radiation heat producing means 6 until the temperature of the first gas passage 5 adapted to be sensed by a combustion gas thermister 23 reaches the maximum limit of 500 deg.C. Subsequently, when the sensing temperature of the radiation heat sensor 21 rises as the heating proceeds, the damper 4 is actuated in response thereto to cause the temperature of the first gas passage 5 to fall (to the minimum limit of 300 deg.C). Accordingly, the temperature of the first gas passage is maintained between 500 deg.C and 300 deg.C. By adjusting in this way the temperature of the combustion gas thermister 23 provided in the first gas passage 5 in response to the sensing temperature of the radiation heat sensor 21, the level of the radiation heat is regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a heating device, and more particularly, to a heating device that blows out warm air and radiates radiant heat.

[Prior art and problems to be solved by the invention] Conventional heating devices can be roughly divided into hot air heating devices (which burn fuel such as kerosene or city gas in a burner and blow out the combustion gas by a fan). There are two types of heating devices: fan heaters) and radiant heating devices that mainly use radiant heat from red-hot burners or electric heaters.

However, since hot air heating systems heat the entire room, it takes a considerable amount of time to reach a comfortable temperature, and the user must endure the cold during that time, making it extremely uncomfortable. However, there is a problem in that it requires 1A.

In addition, with radiant heating devices that mainly use radiant heat, the above problems are minor, but since the heating area is mainly limited to the front (front) of the heating device, it is difficult to heat the entire room. This is not suitable, and there is also the problem that only the front of the heating device gets too hot.

There is also a type of heating device that uses radiant heat as its main source and blows out hot air, but because it constantly emits radiant heat, there is a problem that only the front area of the heating device becomes too hot.

Furthermore, some hot air heating devices generate radiant heat at the same time, but for example, if a gas fan heater is equipped with a separate radiant heater (gas heater, electric heater, etc.), the structure becomes complicated and manufacturing costs increase. There is a problem that the amount of power increases, and furthermore, when an electric radiator is used, there is a problem that the running cost becomes high. In addition, although running costs are low for those using gas radiant burners, it is difficult to make the output of the burner variable with so-called Schvanck burners, and the amount of radiant heat that accounts for the total heating is low. The problem is that it is difficult to make fine adjustments to obtain high comfort.

The invention of the present application solves the above problems, and aims to provide a heating device that can achieve comfortable heating through a rational combination of warm air and radiant heat.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the heating device according to the first invention includes a burner that burns fuel, and a combustion gas generated from the burner that is used as combustion gas for hot air. a combustion gas distribution means that divides the combustion gas into the combustion gas passage for hot air and the combustion gas passage for radiant heat, and guides the former to the combustion gas passage for hot air and the combustion gas passage for radiant heat; a radiant heat generating means that generates radiant heat by contacting the passing combustion gas for radiant heat; and a fan that blows out the combustion gas for radiant heat that has passed through the combustion gas passage for radiant heat and the combustion gas for hot air that has passed through the combustion gas passage for hot air. The present invention is characterized in that the ratio of the combustion gas for hot air and the combustion gas for radiant heat is adjusted by controlling the combustion gas distribution means.

Moreover, the heating device according to the second invention of the present application is the heating device according to the first invention of the present application! Furthermore, a radiant heat sensor detects radiant heat from the front area of the heating device, and a distribution ratio of the combustion gas for hot air and the combustion gas for radiant heat is controlled by controlling the combustion gas distribution means according to the output from the radiant heat sensor. The present invention is characterized by the addition of a distribution control means for adjusting the distribution.

[Function] In the heating device of the first aspect of the present application, the combustion gas from the burner is divided into two by the combustion gas distribution means, one for hot air and one for radiant heat, and the combustion gas for radiant heat is divided into two for hot air and for radiant heat. The gas is supplied to the gas passage, contacts the radiant heat generating means, generates radiant heat, and warms the front area of the heating device in a short time after the heating device starts to be used. The radiant heat combustion gas that has passed through the radiant heat combustion gas passage and is used to generate radiant heat, and the hot air combustion gas that has passed through the hot air combustion gas passage are blown out by a fan to warm the entire room.

On the other hand, by adjusting the combustion gas distribution means, the amount of combustion gas supplied to the radiant heat generating means can be adjusted, thereby making it possible to adjust the amount of radiant heat generated by the radiant heat generating means. Therefore, comfortable heating can be achieved by appropriately combining the heating effect of warm air and the heating effect of radiant heat.

Further, in the heating device according to the second invention of the present application, the radiant heat sensor detects the intensity of radiant heat from the front area of the heating device, and the distribution control means controls the combustion gas distribution means according to the output from the radiant heat sensor. By controlling the amount of combustion gas supplied to the radiant heat generation means, the radiant heat can be controlled to a desired intensity to enable comfortable heating.

[Example] Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a heating device (
As shown in Figure 0, which is a diagram showing a gas hot air heater, a burner 3 is arranged in a combustion chamber 2 at the center of a box-shaped main body 1, and a burner 3 is placed in the upper part of the combustion chamber 2 to blow combustion gas into hot air. A combustion gas distribution means (damper) 4 for distributing combustion gas for use and for radiant heat is provided. Of the space divided by the combustion chamber 2 of the main body 1, the front side (the left side of the combustion chamber 2 in FIG. 1)
A radiant heat combustion gas passage (first gas passage) 5 is formed between the combustion chamber 2 and the partition wall 12.

As soon as the radiant heat combustion gas distributed by the damper 4 exits the combustion chamber 2, it is mixed with air flowing in from above, and flows into the first gas passage 5. In FIG. 1, solid line arrows indicate the flow of combustion gas, and dotted line arrows indicate the flow of air. A panel heat exchanger 6, which is a radiant heat generating means, is attached to the front of the first gas passage 5 in the middle thereof, and forms a part of the first gas passage 5. The front surface of the panel heat exchanger 6 is coated with far-infrared paint to efficiently emit far-infrared rays and promote the effect of radiant heating. Furthermore, on the rear side of the main body 1 (the right side of the combustion chamber 2 in FIG. 1), there is a combustion chamber 2 and a partition wall 1.
Warm air combustion gas passage through which hot air combustion gas passes between 3 and 3.
! 8 (second gas passage) 7 is formed. Damper 4
As soon as the hot air combustion gas distributed by the above exits the combustion chamber 2, it is mixed with the air flowing in from above and flows into the second gas passage 7.

In this embodiment, the ratio of the amount of air flowing into the first and second gas passages 5.7 is such that the amount of air flowing into the first gas passage 5 is smaller. This is so that the radiant heat combustion gas flowing into the first gas passage 5 can be adjusted to a maximum temperature of 500° C., as will be described later.

An intake port 8 is formed on the back surface (right side in FIG. 1) of the main body 1 to take in air to dilute the combustion gas, and a filter (not shown) is attached to the intake port 8.

At the lower part of the main body 1, a fan 9 is installed which mixes and blows out the combustion gas for radiant heat and warm air that has passed through the first and second gas passages 5.7 in front of the fan 9. A warm air outlet 10 for blowing out hot air from the fan 9 is formed at the bottom. Furthermore, a second
An operation panel 11 as shown in the figure is provided, and desired operating conditions are set from this operation panel 11. In addition, an air intake port 5 is formed above the air intake port 8 on the back of the main body 1, and the air taken in from there flows through the space formed by the partition wall 14 and the main body 1 inside the main body 1. hand,
This prevents the operation panel 11 from overheating and ultimately becomes part of the dilution air. Note that, regardless of the opening degree of the damper 4, air is supplied to the first and second gas passages 5.7 from the air passage N17 formed by the intake ports 8 and 15 and the partition walls 12, 13.14 following them. or is configured to be supplied with

Furthermore, a radiant heat sensor 21 for detecting radiant heat from the front area of the heating device is provided in a recessed portion at the lower front of the main body 1. This radiant heat sensor 21 is connected to a distribution control means 22 provided in the control section 16 on the lower side of the operation panel 11, which inserts the damper 4 and adjusts the distribution ratio of the radiant heat combustion gas to the hot air combustion gas. There is. Further, at the bottom of the first gas passage 5, there is a combustion gas thermistor 2 for measuring the temperature of the radiant heat combustion gas that has passed through the passage.
Furthermore, a room temperature thermistor 2 for measuring the room temperature (intake air temperature) is provided in the recess at the bottom of the back of the main body 1.
4 is provided. Further, near the fan 9, there is a high limit switch 25 for stopping the supply of combustion gas when the temperature of the combustion gas flowing into the fan 9 reaches an upper limit value.
is installed.

Next, the operation of the heating device configured as described above will be explained.

When the "auto-radiation" operation is set by the operation panel 11, first, the amount of fuel gas supplied to the burner 3 is controlled by the control unit 16 according to the difference between the room temperature measured by the room temperature thermistor 24 and the set temperature. controlled by On the other hand, since the temperature detected by the radiant heat sensor 21 is low at the start of operation, the damper 4 is activated in response to an instruction from the distribution control means 22, and the temperature of the first gas passage 5 detected by the combustion gas thermistor 23 reaches the upper limit. A large amount of combustion gas is supplied to the first gas passage 5 including the radiant heat generating means 6 until the temperature reaches 500°C. The first to be adjusted by operating the damper 4
The relationship between the temperature of the gas passage 5 and the temperature detected by the radiant heat sensor 21 is as shown in FIG. As shown in FIG. 3, when the temperature detected by the radiant heat sensor 21 is low, that is, when the front area of the heating device is not sufficiently heated, such as at the start of operation, the temperature of the first gas passage 5 reaches the upper limit. The opening degree of the damper 4 is kept large until the temperature reaches 500°C.

Thereafter, as heating progresses and the temperature detected by the radiant heat sensor 21 rises, the damper 4 operates so that the temperature of the first gas passage 8@5 becomes low (lower limit 300° C.). Therefore, the temperature of the first gas passage is maintained between 500°C and 300°C. In this way, the intensity of radiant heat is adjusted by adjusting the temperature of the combustion gas thermistor 23 arranged in the first gas passage 5 based on the detected temperature of the radiant heat sensor 21. It goes without saying that the basic effects of the present invention can be obtained even if the damper 4 is configured to be operated directly by the output of the radiant heat sensor 21 in order to perform the heating more smoothly and provide comfortable heating. In this way, in "auto-radiation" operation, strong radiant heat is radiated from the front of the heating device within a short period of time after operation starts, causing the area in front of the heating device to become locally warm, causing room temperature or heating device temperature to rise. When the temperature of the front area rises, the supply of radiant combustion gas to the first gas passage 5 is suppressed, and radiation of radiant heat is suppressed, thereby avoiding local overheating and providing comfortable heating.

In addition, when the "continuous-radiation" operation is set by the operation panel 11, the damper 4 is set so that the temperature of the first gas passage 5 becomes 400°C, regardless of the output of the radiant heat sensor 21.
The opening degree of the heating system is adjusted, and when the heating system enters steady operation, it emits a certain amount of radiant heat.

However, when the detected temperature of the radiant heat sensor 21 exceeds the upper limit (Fig. 3), the damper 4 is activated and closes the first gas passage 5 to avoid accidents due to abnormal temperature rise, and the detected temperature is lower than the lower limit. (Fig. 3) When the following occurs, the normal "continuous -
It is configured to return to "radiant" operation.

Further, when the operation panel 11 is set to "radiant operation-0FFJ operation" in which radiant heat heating is not performed, the damper 4 is activated, the first gas passage 5 is closed, and a normal hot air heating operation is performed.

In addition, in the above embodiment, a heating device is shown in which the fan is arranged downstream of the combustion gas passage to suck in combustion gas and blow it out. It is also possible to arrange it in the air line and blow out the combustion gases by forcing air into the combustion chamber.

The above embodiment is a heating system according to the invention of the present application cylinder 2! The heating device according to the invention of the present application No. 1 does not include the radiant heat sensor 21 of the above embodiment, but the heating device according to the invention of the present application No. 1 (not including the radiant heat sensor 21) ), you can manually adjust damper 4,
By manually setting the temperature of the first gas passage 5 to be maintained, or by interlocking the room temperature and the damper 4, we can streamline the use of warm air and radiant heat, which was not possible with conventional heating systems. It becomes possible to realize comfortable heating by a combination of the above, and it is possible to obtain an effect similar to that of the heating device according to the invention of the present invention tube 2.

[Effects of the Invention] As described above, the heating devices according to the first and second inventions can combine the heating effects of radiant heat and warm air at any reasonable ratio, so that In addition to heating the entire room, local heating and rapid heating using radiant heat can be achieved with a simple arrangement, making it possible to provide comfortable heating.

In addition, the second heating device of the present application includes a radiant heat sensor and a distribution control means for controlling the combustion gas distribution means according to the output thereof, and the intensity of the radiant heat can be controlled according to the environment. The entire room and the area in front of the heating device can be comfortably heated while preventing the area in front of the room from overheating.

If a panel heat exchanger whose front surface is coated with far-infrared radiation paint is used as the radiant heat generating means, the radiation of far-infrared rays will be promoted and the efficiency of radiant heating will be improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a heating device according to an embodiment of the present invention, FIG. 2 is a diagram showing its operation panel, and FIG. 3 is a temperature and radiant heat sensor of the first gas passage of the heating device in FIG. 1. 2 is a graph showing the relationship between the temperature and the detected temperature.

Claims (1)

[Claims] (1) A burner that burns fuel, and the combustion gas generated from the burner is divided into combustion gas for hot air and combustion gas for radiant heat, the former being used as a combustion gas passage for hot air, and the latter as combustion gas for radiant heat. a radiant heat generating means forming a part of the radiant heat combustion gas passage and generating radiant heat by contacting the radiant heat combustion gas passing through the radiant heat combustion gas passage; The fan includes a fan that blows out the radiant heat combustion gas that has passed through the hot air combustion gas passage and the hot air combustion gas that has passed through the hot air combustion gas passage, and controls the combustion gas distribution means to separate the hot air combustion gas and the radiant heat combustion gas. A heating device characterized by adjusting the gas ratio. 2. The heating device according to claim (1) further includes a radiant heat sensor that detects radiant heat from the front area of the heating device, and controls the combustion gas distribution means according to the output from the radiant heat sensor to perform hot air combustion. A heating device characterized in that a distribution control means for adjusting the distribution ratio of gas and combustion gas for radiant heat is added.