JPS59176522A - Heating apparatus - Google Patents

Abstract

PURPOSE:To obtain a strong thermoelectromotive force by a method wherein a heat collecting plate is provided on the upper part of the heating section of each of thermoelectric power generating elements so that the heating section heats to a high temperature and the difference in temperatures between the heating section and the cooling section of the element becomes large. CONSTITUTION:When combustion begins in a combustion cylinder 5, the heating section 15 of each of the thermoelectric power generating elements 14 is heated by the heat generating due to the combustion so that a thermoelectromotive force arises from the difference in temperature between the heating section 15 and the cooling section 16 of each of the elements 14 and a motor 17 is driven by the electromotive force to thereby rotate a fan 6. With the rotation of the fan 6, air is sucked into the body 1 of the heating apparatus through an air intake port 8 and runs against the rear surface of a reflecting plate 3 to become hot. Then the hot air is blown out from a blowout port 7 in sequence and circulates through the room. The heated air moving up at time of combustion as it heats the heating section 15 of the thermoelectric power generating element 14 is interrupted by a heat collecting plate 18 and a heated air layer 19 is formed between the heating section 15 and the heat collecting plate 18 so that the heating section 15 is heated by the radiant heat from the heat collecting plate 18 to thereby obtain the strong thermoelectromotive force.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heating device used, for example, as a portapu-type oil stove.

[Technical background of the invention and its problems]

This type of kerosene heater has a fan built into its main body, and the rotation of this fan sends out warm air, which heats the room by combining it with radiant heat from the combustion section. ing.

However, in the past, the above-mentioned fan was driven using a special commercial power supply, which caused the problem that the power cord was led out from the stove body, and this power cord restricted the installation location and installation range of the υ body. was there.

Therefore, in recent years, a fan has been developed that uses a thermoelectric generating element and uses the thermoelectromotive force of the thermoelectric generating element to drive a fan (Utility Model Application No. 105501/1983). When using this thermoelectric power generation element, it is important to maintain a large temperature difference between the heating part at the tip and the cooling part at the base; if this is not met, sufficient thermoelectromotive force cannot be obtained. .

However, in conventional methods, the heating efficiency of the heating part of the thermoelectric generating element was poor, and the temperature difference between the heating part and the cooling part could not be made large, and a sufficient thermoelectromotive force could not be obtained. .

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a heating device that can increase the heating efficiency of the heating section of a thermoelectric generating element and obtain a sufficient thermoelectromotive force. This is what I am trying to do.

[Summary of the invention]

The present invention provides a heat collecting plate on the upper side of the heating part of the thermoelectric generating element,
This heat collecting plate collects heat from the combustion section to the heating section.

[Embodiments of the invention]

The present invention will be described below with reference to an embodiment shown in FIGS. 1 to 4. In the figure, reference numeral 1 denotes the main body of a kerosene stove. The main body 1 is open at the front, and a reflective plate 3 curved in an arc shape is provided at the back of the open part 2, and a substrate 4 is provided at the bottom. A combustion tube 5 serving as a combustion section for burning oil is provided in the center of the substrate 4. In addition, the main body 1
A 7-inch fan 6 is provided near one end of the fan 6, and a Suita lower is formed on the front surface of the main body 1 facing the fan 6, and an appropriate suction port (not shown) is provided on the side m of the main body 1. It is formed.

In addition, horizontally long slits 10 and 11 are formed in the upper parts of the reflector plate 3 and the back plate 9 of the main body 1, respectively, and these slits 10 and 11 are provided with radiators 12 made of metal plates with good thermal conductivity. It is inserted. The above radiator 12
One end portion faces the opening portion 2, and the other end portion faces the outside of the back side of the main body 1. Further, at one end of the lazoeta 12, a plurality of thermoelectric generators 14, for example seven thermoelectric generators, are installed.
... are attached via fixtures 13 at predetermined intervals. The thermoelectric power generating element 14 has a substantially υ-shape in which one end of a P-type semiconductor such as manganese-doped iron silicide and one end of an N-type semiconductor such as cobalt-doped iron silicide are joined by a PN junction. The junction between the P-type semiconductor and the N-type semiconductor is the heating section 15, and the opposite end thereof is the cooling section 1.
It is 6. Terminals are attached to each of the cooling parts 16, and the thermoelectric generating elements 14 are connected in series through the respective terminals as shown in FIG. 4, and both ends thereof are connected to the motor 17 of the fan 6.

On the other hand, the heating part 15 is located on the upper side of the thermoelectric generating element 14.
A heat collecting plate 18 is provided in a spaced and opposing state, and the heated air rising from the combustion tube 5 is blocked by this heat collecting plate 18.

Next, the effect will be explained. When combustion starts in the combustion tube 5, the combustion heat is used to heat the heating portions 15. of the thermoelectric generators 14. is heated, and a thermoelectromotive force is generated due to the temperature difference between the heating section 15 and the cooling section 16, and in response, the motor 17 is activated and the fan 6 is rotated. Then, as the fan 6 rotates, air is sucked into the main body 1 from the suction port 8, and when it comes into contact with the back surface of the reflector plate 3, it becomes hot air. cycle.

By the way, during this combustion, the thermoelectric generating element 14.
5- heated air rising by heating the heating section 15 of... is blocked by the heat collecting plate 18. For this,
Heating section 15 of thermoelectric generating element 14... and heat collecting plate 18
A heated air layer 19 is formed between them, and the heating portions 18 are heated by the radiant heat of the heat collecting plate 18.

In this way, not only the flame of the combustion tube 5 but also the heated air layer 19
Also, due to the radiant heat of the heat collecting plate 18, the heating section 15...
Since the temperature of the heating section 15 can be maintained high, and the temperature difference between the heating section 15 and the cooling section 16 is small, a high thermoelectromotive force can be obtained.

Note that when the heating section 15 is heated only by the flame from the combustion tube 5, the temperature of the heating section 15 will not be constant due to the normal state of combustion, and there will be a gap between the heating section 15 and the cooling section 19. If the temperature difference between the two is also low, it will not be possible to obtain a stable and sufficient electromotive force. This is thought to be due to the fact that the hot air flows upward without sufficient contact with the heating portion 15 of the thermoelectric element 14, where the flame fluctuates due to the influence of draft caused by combustion.

On the other hand, in the case where the present heat collecting plate 18 is arranged, even if the flame during combustion varies, the variation in the heating state of each thermoelectric power generating element 14 can be improved, and high output can be achieved.

Furthermore, even if water is poured onto the thermoelectric generating elements 14 which are heated and red hot, the heat collecting plate 18 functions as a cover, which has the advantage of preventing the thermoelectric generating elements 14 from being damaged.

Note that the present invention is not limited to the above embodiment,
As shown in FIG. 5, both ends of the heat collecting plate 21 may extend to the outside of the thermoelectric generating elements 14. According to this, it is possible to obtain the same heating state as the other thermoelectric elements 14 on both end sides, which until now have been inferior in heating air layer and radiant heat, and it is possible to achieve even higher output. .

Alternatively, as shown in FIGS. 6 and 7, the heat collecting plate 3 may be attached to a heat insulating plate 20 provided on the lower side of the lanoeta 12. The heat insulating plate 20 is made of stainless steel, which is the same material as the heat collecting plate 18, and the heat collecting plate 3
1 and the thermal expansion coefficient of the heat insulating plate 20 are made equal. Therefore, the thermal expansion when the heat collecting plate 31 is heated is reduced by the heat insulating plate 20.
This has the advantage that thermal deformation of the heat collecting plate 31 can be prevented by absorption, and the heating state of each thermoelectric generating element 14 can be made uniform.

Note that the same parts as those in the above embodiment are given the same numbers and the explanation thereof will be omitted.

〔Effect of the invention〕

As explained above, in the present invention, since the heat collecting plate is provided on the upper side of the heating part of the thermoelectric generating element, the heated air rising from the combustion part is blocked by the heat collecting plate, and the heat collecting plate and the heating part A heated air layer is formed between the two and the heating section is heated by radiant heat from the heat collecting plate. Therefore, the temperature of the heating section becomes high and the temperature difference between the heating section and the cooling section becomes large9, resulting in the effect that a high thermoelectromotive force can be obtained.

[Brief explanation of drawings]

Figures 1 to 4 show one embodiment of the present invention, in which Figure 1 is a perspective view showing a kerosene stove, Figure 2 is a plan view showing the main parts, and Figure 3 is the lll in Figure 2. -[A sectional view taken along line 1, FIG. 4 is an electric circuit diagram of the thermoelectric generating element, FIG. 5 is a plan view showing the first other embodiment of the present invention, and FIG. FIG. 7 is a plan view showing another embodiment of No. 2, and FIG. 7 is an enlarged perspective view of a part thereof. 1... Device main body, 5... Combustion part (combustion cylinder), 14.
...thermal power generation element, 15... heating section, 16... cooling section, 18 p 21 , J 1... heat collecting plate. Applicant's agent Patent attorney Takehiko Suzue 9- 1st cause 3rd cause Figure 4 514 Kubu, s, -, + 1,000'6 s5 cause Figure 6 Figure 7 412 '17

Claims (2)

[Claims] (1) A device main body, a combustion section provided within the device main body,
A thermoelectric generating element that generates a thermoelectromotive force by creating a temperature difference between a heating section and a cooling section using the heat of the combustion section, and a heat collecting plate provided on the upper side of the heating section of this thermoelectric generating element. A heating device characterized by comprising: (2) The heating according to claim 1, characterized in that a heat insulating plate formed of the same material as the heat collecting plate is provided on the lower side of the thermoelectric power generating element, and the heat collecting plate is attached to this heat insulating plate. Device.