JPH0445353A - Heating apparatus - Google Patents

Abstract

PURPOSE:To prevent a long flame from flickering and enhance the heating effect by a radiant and hot air heating by a method wherein an air supply duct enclosing the surrounding of a hot air fan between a deflecting plate and the hot air fan is provided with an outlet above the hot air fan and facing an inlet of an air exhaust hood to avoid the effect on the flame of a burner of the air from the hot air fan. CONSTITUTION:A stream of air from a hot air fan 44 is prevented by an air supply duct 51 from flowing along a reflecting plate 26 to the side of a burner 12 to avoid the effect on the flame of a burner of the air from the hot air fan. Therefore, there is no flickering of the flame in the air from the hot air fan and a long, good flame is provided to visually enhance the feeling of warmness. A high heating effect can also be obtained by the synergetic action of radiant and hot air heating. Since the hot air fan is enclosed by the air supply duct, the whistling wind noise of the hot air fan is difficult to leak out therefrom, thereby permitting the noise of a heating device to be controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a heating machine such as a radiant hot air heater equipped with an open combustion type burner that can supply combustion secondary air through natural ventilation.

(b) Conventional technology Conventional heating machines of this type include, for example, Japanese Unexamined Patent Publication No. 2-7
As disclosed in Japanese Patent No. 1011, a light-transmitting combustion tube is provided in an exterior case having an opening on the front side, and a reflector is provided to surround the combustion tube, and a burner is installed below the combustion tube. This burner is provided with secondary combustion air through natural ventilation to make the flame longer, and by making this long flame visible through the opening on the front of the exterior case, it emphasizes the beauty of the flame and creates a feeling of heating. I'm trying to increase that. In addition, in this conventional heater, a ventilation chamber is formed under the top plate, and a space communicating with this ventilation chamber is formed between the reflector and the back of the exterior case, and the exterior By sending air from a heat recovery fan placed at the bottom of the case into the ventilation chamber, the temperature rise on the top plate of the outer case was suppressed.

(C) Problems to be Solved by the Invention However, in the conventional heaters mentioned above, since the amount of air blown by the blower is small, it is not possible to expect indoor air circulation by warm air, and the heating start-up is slow. was there. Therefore, in order to solve this problem, a hot air fan with a large air flow rate is placed behind the reflector, and the air from this hot air fan is combined with the combustion exhaust gas from the burner flowing out from the combustion tube to create a hot air flow. This warm air can be discharged from the hot air outlet on the front of the outer case, but in that case, the air from the warm air fan also flows toward the bottom of the outer case along the back of the reflector. There was a concern that the burner would be affected by the wind and the flame would be greatly disturbed.

The present invention has been made in view of the above-mentioned points, and is designed to prevent the burner flame from being affected by the wind from the hot air fan.
The purpose of this invention is to provide a heater that prevents the long flame from being disturbed and has a high heating effect using radiation and hot air.

(D) Means for Solving the Problems The present invention provides an exterior case having an opening and a hot air outlet on the front surface, a combustion tube provided in the exterior case corresponding to the opening, and a combustion tube surrounding the combustion tube. a reflector, a burner installed under the combustion tube to which combustion secondary air is supplied through natural ventilation, an exhaust tube connected above the combustion tube, and a burner installed above the combustion tube to which combustion air flows out from the exhaust tube. an exhaust hood that guides the combustion exhaust gas to the hot air outlet, and a warm air fan provided behind the reflector, and a space surrounding the warm air fan is provided between the reflector and the hot air fan. A surrounding ventilation duct is provided, and the ventilation duct has an outlet above the warm air fan, and the outlet faces the inlet of the exhaust hood.

Further, the present invention provides the heater described above, in which the outlet of the air duct is formed larger than the inlet of the exhaust hood, and the air from the warm air fan is supplied to the inside and outside of the exhaust hood.

(E) Function With this configuration, the air duct prevents the air from the hot air fan from flowing along the reflector toward the burner, so that the flame of the burner is not affected by the wind from the hot air fan. As a result, there is no need to worry about the flame being disturbed by the influence of the hot air fan's wind, and it is possible to form a long, good-looking flame that enhances the visual sensation of heating. A heating effect can be obtained. Furthermore, since the hot air fan is surrounded by the air duct, the wind noise from the hot air fan is less likely to leak outside, and noise generation can be suppressed.

Furthermore, in the heater according to claim 2, the outlet of the air duct is formed larger than the inlet of the exhaust hood, and the air from the warm air fan is supplied to the inside and outside of the exhaust hood. In addition, the exhaust hood can be cooled from the inside and outside to increase its durability, and the temperature rise on the top surface of the exterior case can also be suppressed.

(F) Example Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 6.

In the figure, (1) is a box-shaped exterior case, and this exterior case (1) has a bottom plate (2), a peripheral side plate (3), and a top plate (4).
) and a front panel (7), which has an opening (5) and a hot air outlet (6) on its front surface.
6) is provided above the opening (5) and includes a plurality of louver horizontal blades (6A). In addition, the opening (5
) is provided with a protective guard (9) using a lath plate (8) in a detachable and rotatable manner.
) are equipped with U-shaped handles (10) on both the left and right sides. (11) is a light-transmitting combustion tube made of heat-resistant transparent glass provided in the exterior case (1) corresponding to the opening (5), and (12) is the exterior under this combustion tube (11). This is a burner placed at the bottom inside the case (1), and this burner (12) is connected to a burner motor (13) and an air supply fan (1).
An air supply case (15) with a built-in air supply case (15), a cylindrical vaporization cylinder (17) having a vaporization heater (16>) connected to the air supply case (15), and a plurality of air supply cases (15) with a built-in It has secondary air holes (18) (1B) and the vaporization cylinder (17).
) and a burner case (19) provided around the burner case (19). The vaporizer cylinder (17) is connected to the burner motor (
13), and has a burner head (21) on the top thereof that spouts vaporized premixed gas upward. The combustion is carried out from the air supply fan (14).
Next, air is supplied, and petroleum fuel is also supplied from a fuel supply pipe (22). Then, the petroleum fuel vaporized and premixed in the vaporization tube (17) is ejected from the burner head (21) and ignited by a spark plug (not shown), causing a blue flame (F ) is formed and combusted, and this flame (F) is lengthened by the combustion secondary air supplied by natural ventilation from the secondary air holes (18) (18).
As shown in the figure, it extends to the upper part of the combustion tube (11). (23) filters indoor air (24)
) to the charge air case (15), (25)
(26) is a partition plate that also serves as a horizontal reflector that supports the lower end of the combustion tube (11), and (26) is a reflection plate provided inside the outer case (1) to surround the combustion tube (11). (2
6) The peripheral edge of the partition plate (25) is fixed to the lower end of the partition plate (25). (27) is a cylindrical exhaust pipe with a bottom that is connected to the combustion pipe (11>), and a large number of exhaust holes (28) (28) are provided at the bottom of this exhaust pipe (27). A red-hot body 30) is suspended from the center of the resistance plate part (29) toward the burner head (21), and is arranged inside the exhaust pipe (27). is the donut-shaped first
An umbrella-shaped second aperture plate (32) is provided with a gap between the aperture plate (31) and the first aperture plate (31). (
33) is an upper reflector plate made of aluminized steel plate provided at the upper end of the reflector plate (26);
33) has a communication port (33) in its center, as shown in Figure 4.
4), and the upper end of the exhaust pipe (27) is coupled to the lower peripheral surface of the communication port (34). Further, the rear edge of the upper reflector (33) is provided with anchoring winds (35) (35) that engage the reflector (26), and wind pressure relief holes (36) are provided on both sides of the front part of the upper reflector (33). (36), and furthermore, near the center of the front part, an engaging part (39) (for engaging a locking claw (38) (3g) of a heat shield plate (37), which will be described later) is provided.
39). The heat shield plate (37) is made of an aluminized steel plate, and is located directly above the communication port (34) and can be fixed on the upper reflector plate (33), as shown in FIG. The edge is provided with a front shielding piece (40) with the locking claw (38) formed at the lower end, and the rear edge is provided with a rear shielding piece (40) with the fixing part (41) bent at the lower end.
2).

(43) is an exhaust hood made of hot-dip galvanized steel plate that is installed above the exhaust pipe (27), and this exhaust hood (43) is provided on the exhaust pipe (27).
3) is fixed to the upper surface of the upper reflector plate (33) with screws or the like, and guides the combustion exhaust gas flowing out from the exhaust pipe (27) to the hot air outlet (6). The front and rear surfaces of this exhaust hood (43) are open, and the open rear surface serves as an inlet (45) through which air from the warm air fan (44) enters, and the open front surface serves as a hot air outlet. The exhaust hood (43) is an outlet (46) that faces the outer case (1) with a gap between the exhaust hood (43) and the outer case (1).
There is a gap between the top plate (4) and the exhaust hood (43), and a ventilation chamber (47) is formed between the top plate (4) and the exhaust hood (43).

The warm air fan (44) is located behind the reflector (26) and has an air suction port (
48), and is rotated by a warm air motor (50) attached to a fan guard (49) that also serves as a filter and covers this air intake port (48) from the outside. Further, the rotation speed of this hot air motor (50) is controlled in multiple stages or steplessly depending on the combustion amount of the burner (12). (51
) is a vertically long box-shaped air duct surrounding the hot air fan (44), and this duct (51) is connected to a reflector (26).
and a hot air fan (44) at the rear of the exterior case (1), and has a horizontally long rectangular outlet (52) located above the hot air fan (44). (52
) is opposed to the inlet (45>) of the exhaust hood (43).Furthermore, the outlet (52) of the duct (51)
As shown in the figure, the hot air fan (44) is formed larger than the inlet (45) of the exhaust hood (43), and is sent out from the outlet (52). (43)
is supplied to the outside ventilation chamber (47).

In addition, (53) in Figures 1 and 6 is the outer case (1).
The decorative stand (54) is installed at the lower front of the
3), and is also the operating member equipped in (5) in Figure 3.
5) is a cartridge tank housed in one side of the exterior case (1) so that it can be taken out and taken out freely, (56) is a tank guide that supports the cartridge tank (55), and (57 in Fig. 1)
) are an appropriate number of ventilation holes bored in the lower part of the peripheral side plate (3) of the outer case (1), so that indoor air enters the lower space inside the outer case (1) through these ventilation holes (57). It has become.

In the above configuration, when the burner (12) starts combustion, a blue flame (F) rises above the burner head (21), and natural ventilation due to the draft action of this flame (F) causes the secondary air hole (18) to flow out. Combustion secondary air is introduced around the vaporization tube (17), and the flame (F) extends to the upper part of the combustion tube (11) so as to wrap around the incandescent body (30).
to become red-hot. The combustion exhaust gas is discharged through the exhaust vent (28
>(28) into exhaust #(27>, where
It passes through the first aperture plate (31) and the second aperture plate (32) and enters the exhaust hood (43) through the communication port (34). At this time, the combustion exhaust gas flowing out from the exhaust stack (27) is bent sideways by the heat shield plate (37) and is bent sideways by the exhaust hood (4).
3) Can be diffused within. On the other hand, indoor air sucked into the exterior case (1) from the air suction port (48) by the rotation of the warm air fan (44) rises within the duct (51) and is sent out from the outlet (52). And this exit (52
) The air from the warm air fan (44) is divided at the outlet (52), and a part of the air is sent to the inlet (45).
The hot air enters the exhaust hood (48), where it is mixed with combustion exhaust gas to become hot air, which is then discharged into the room through the hot air outlet (6). In addition, the remaining part of the air diverted at the output r: J (52) part is transferred to the ventilation chamber (48) outside the exhaust hood (48).
47), recovers the heat of the exhaust hood (43) and the top plate (4) and cools them, and then discharges it into the room from the upper edge of the hot air outlet (6).

According to the embodiment described above, the hot air fan (44) is provided behind the reflector (26) surrounding the combustion tube (11), and the hot air fan (44) is provided between the reflector (11> and the hot air fan (44)). Exterior case (
1) is provided with a ventilation duct (51) that surrounds the warm air fan (44), and this duct (51)
4) has an outlet (52) above the upper level, and this outlet (52) is opposed to the inlet (45) of the exhaust hood (43) provided above the exhaust pipe (27). The blower duct (51) can prevent the wind from the warm air fan (44) from flowing along the back side of the reflector (26) toward the burner (12), thereby allowing combustion secondary air to flow through natural ventilation. The flame (F) of the burner (12) that is supplied to the burner (12) will not be disturbed by the influence of the hot air fan (44).
A long, good blue flame (F) is formed, which not only enhances the visual feeling of heating, but also the combustion tube (
11) and the synergistic effect of heating by radiation from the exhaust stack (27) and heating by warm air blown out from the hot air outlet (6), it is possible to obtain a heater that is comfortable and has a high heating effect. In addition, since the hot air fan (44) is surrounded by the air duct (51), the warm air fan (44) is surrounded by the air duct (51).
4) It is possible to prevent the wind noise from leaking to the outside, and to suppress the generation of noise.

In addition, the outlet (52) of the ventilation duct (51>) is formed larger than the inlet (45) of the exhaust hood (43) so that the air from the warm air fan (44) can be supplied to the inside and outside of the exhaust hood (43). , the heat of the exhaust hood (43) can be efficiently recovered, and the exhaust hood (43) can be cooled from the inside and outside to increase its durability.
Ventilation chamber (47) between exhaust hood (43) and top plate (4)
), and the rise in temperature of the top surface (4) can be suppressed at the same time.

Additionally, in the above embodiment, the exhaust hood (43)
Since wind pressure relief holes (36) (36) are formed in the front part of the upper reflector (33), external wind enters the exhaust hood (43) from the hot air outlet (6). Even if something happens, the wind pressure relief hole (36)
(36) to the space inside the reflector plate (26) outside the combustion tube (11>), preventing wind from entering the combustion tube (11) and causing the flame (F) to flow backwards. can improve sex.

(g) Effects of the Invention Since the present invention is configured as described above, the air duct prevents the air from the hot air fan from flowing along the reflector toward the burner, so that the flame of the burner is prevented from flowing toward the burner. Since it can be unaffected by the wind from the fan, there is no need to worry about the flame being disturbed by the wind from the warm air fan, and a long and nice flame can be formed to enhance the visual sensation of heating, as well as radiant heating. The synergistic effect of this and hot air heating makes it comfortable and
It is possible to provide equipment with high heating effects. -Also,
Since the hot air fan is surrounded by the air duct, the wind noise from the hot air fan is less likely to leak outside, and noise generation can be suppressed.

Furthermore, in the present invention, the outlet of the ventilation duct is formed larger than the inlet of the exhaust hood, and the air from the hot air fan is supplied to the inside and outside of the exhaust hood, so that the heat of the exhaust hood can be efficiently recovered. In addition to contributing to heating, the exhaust hood can be cooled from the inside and outside to increase its durability.Furthermore, the temperature rise on the top of the exterior case can be suppressed, improving safety. be.

[Brief explanation of drawings]

Figures 1 to 6 all show embodiments of the present invention, with Figure 1 being a cutaway side view of the main parts of the heater according to the invention, and Figure 2 being an enlarged sectional view of the main parts of Figure 1. , Figure 3 is a partially cutaway plan view with the top plate removed, Figure 4 is a perspective view of the upper reflector, heat shield, and exhaust hood, and Figure 5 is a diagram of the outlet of the ventilation duct and the entrance of the exhaust hood. FIG. 6, an explanatory diagram for explaining the relationship, is a perspective view of a heater according to the present invention. (1>...Exterior case, (5)...Opening, (6
)...Hot air outlet, (11)...Combustion tube, (1
2)...burner, (26)...reflector, (27
)...Exhaust pipe, (43)...Exhaust hood, (
44>... Warm air fan, (45)... Exhaust hood inlet, (51>... Air duct, (52)...
Ventilation duct outlet.

Claims (2)

[Claims] (1) An exterior case having an opening and a hot air outlet on the front surface, and a combustion tube provided in the exterior case corresponding to the opening,
A reflector surrounding the combustion tube, a burner provided under the combustion tube and supplied with combustion secondary air through natural ventilation,
an exhaust pipe connected above the combustion pipe; an exhaust hood provided above the exhaust pipe to guide combustion exhaust gas flowing out from the exhaust pipe to the hot air outlet; A wind fan, a blower duct surrounding the warm air fan is provided between the reflector and the warm air fan, the blower duct has an outlet above the hot air fan, and A heating machine characterized in that the outlet is opposed to the inlet of the exhaust hood. (2) The outlet of the blower duct is formed larger than the inlet of the exhaust hood, and the air from the warm air fan is supplied to the inside and outside of the exhaust hood. heater.