JP3566887B2 - heater - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heater that radiates radiant heat from the front of a main body cabinet to perform indoor heating.
[0002]
[Prior art]
Conventionally, as a heater of this type, a heater disclosed in Japanese Utility Model Publication No. 6-48243 shown in FIGS. 10 and 11 is known.
[0003]
In this heater, a combustion tube 11 made of heat-resistant glass is installed in the center of a main body cabinet 10. A radiator (not shown) is disposed inside the combustion tube 11, while a burner (not shown) is provided below the combustion tube 11, and oil is burned by the burner. It is designed to heat the body . A reflecting plate 12 is provided on the back side of the combustion tube 11 to reflect the radiant heat of the radiator and radiate it toward the front side. Further, the exhaust gas generated in the combustion tube 11 flows to a heat exchanger 13 and a heat exchanger 14 for floor heating (hereinafter referred to as a floor warming heat exchanger) 14 through the heat exchanger 13 (solid arrow in FIG. 11).
[0004]
Thus, while the room is heated by the radiant heat of the radiator , the radiant heat of the heat exchanger 14, and the like, the heat medium circulating through the floor warming radiator (for example, the floor warming carpet) 15 is heated by the floor warming heat exchanger 14. And they also have underfloor heating.
[0005]
[Problems to be solved by the invention]
Thus, the conventional heating apparatus, heat radiated from the radiator及 beauty heat exchanger 13, because a room heating by radiant heat reflected from the reflecting plate 12, the components for obtaining the radiant heat becomes many parts The score was very high.
[0006]
The surrounding air of the combustion cylinder 11 and the reflector 12 is heated and rises to the heat exchanger 13 side, and the heat exchanger 13 is a flat body extending in the horizontal direction as shown in FIG. Therefore, the flow of the rising air (the two-dot chain line arrow in FIG. 11) is obstructed by the heat exchanger 13 and does not smoothly escape from the upper part of the main body cabinet 10, thereby deteriorating the heat exchange efficiency. This heat exchanger 13 has a problem that the width of the heater in the front-rear direction is widened and the installation space for the heater is increased.
[0007]
Further, in the conventional heater, radiant heating is performed by red-heating the radiator in the combustion cylinder 11 as described above, and the distance between the radiator and the burner is related to the combustion flame generated during normal combustion. Is set. Accordingly, since the smaller the combustion flame generated by the burner during slight burning, the distance between the radiator and the combustion flame is long, when small combustion radiator is no longer red hot by the combustion flame. Therefore, there is a problem that the amount of radiant heat is remarkably reduced at the time of minute combustion, and the thermal efficiency is extremely reduced.
[0008]
An object of the present invention is to provide a heater capable of improving space efficiency and heat exchange efficiency and further increasing the amount of radiant heat at the time of minute combustion in view of the conventional problems.
[0009]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention is directed to a heater that arranges a heat exchanger through which air heated by a burner passes in a main body cabinet and radiates combustion heat from a front surface of the main body cabinet. The heat exchanger is formed in a flat box shape with a small front and rear width, and the wide front of the heat exchanger is arranged on the front of the main cabinet, and the back of the heat exchanger has a combustion flame toward the front of the heat exchanger. And a burner that forms
[0010]
According to the present invention, radiant heat can be radiated from the entire front surface of the main body cabinet through the wide surface of the heat exchanger. Further, the heated air around the heat exchanger smoothly rises along the wide surface of the heat exchanger extending in the height direction and is supplied indoors.
[0011]
Further, according to this invention, to be further thinned by side placed, also in the case of back installation for combustion flame of the burner is formed toward the front of the heat exchanger, the entire front surface of the heat exchanger Heat radiation can be performed efficiently. In particular, even at the time of micro combustion, the distance between the combustion flame of the burner and the front of the cabinet is small because the width of the heat exchanger in the front-rear direction is small, and therefore, this combustion flame is located on the front of the heat exchanger. Can be efficiently heated, and the amount of radiant heat can be increased.
[0012]
Even when another heat exchanger is installed on the back of the heat exchanger as in the inventions of claim 2 and claim 3 , the front heat exchanger has a flat box shape with a small front-rear width. Therefore, there is a sufficient space on the back side of the heater, which does not hinder the realization of a thinner heater.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show a first embodiment of a heater according to the present invention. FIG. 1 is a perspective view of the heater, FIG. 2 is a front view of the heater, and FIG. 3 is a schematic side view of the heater. FIG. 4 is a schematic rear view of the heater.
[0014]
As shown in FIGS. 1 and 2, this heater has a flat box-shaped main body cabinet (hereinafter, referred to as a cabinet) 20 as a whole, and is formed such that a wide surface of the cabinet 20 is located in front and rear. . An opening 20b for a heat exchanger, which will be described later, is formed in a front panel 20a of the cabinet 20, and an operation panel 21 for driving operation and a wire guard 22 for preventing contact with fingers and the like are provided. Further, a plurality of slits 20d are formed in the upper plate 20c of the cabinet 20.
[0015]
Next, device components installed inside the cabinet 20 will be described. That is, the heat exchanger 23 is installed on the front side of the cabinet 20. The heat exchanger 23 has a flat box shape with a small front-rear width, and the wide front surface of the heat exchanger 23 faces the room through the opening 20 b of the cabinet 20.
[0016]
A burner 24 and a combustion blower 25 are installed near the lower rear of the heat exchanger 23, and combustion oil is supplied to the burner 24 by an electromagnetic pump 26 and is sucked through an air introduction passage 27. The combustion flame A is blown from the burner 24 toward the inside of the heat exchanger 23 by the combustion air and the combustion oil.
[0017]
A viewing window 28 made of heat-resistant glass is fitted near the lower front of the heat exchanger 23. The viewing window 28 is arranged at a position facing the burner 24, and the combustion flame A can be seen through the viewing window 28.
[0018]
A floor warming heat exchanger 29 is installed inside the cabinet 20 behind the heat exchanger 23. The floor warming heat exchanger 29 has a first exhaust passage 30 communicating with the heat exchanger 23 and a second exhaust passage 31 communicating with the outside. The exhaust gas generated in the heat exchanger 23 is supplied to each exhaust passage 30, 31. And, the air is exhausted through the floor warming heat exchanger 29. Further, a third exhaust passage 32 is connected to each of the exhaust passages 30 and 31 so as to bypass the floor warm heat exchanger 29 and communicate with the exhaust gas from the heat exchanger 23 by the damper 33. It flows to either the side or the third exhaust passage 32 side.
[0019]
A heat medium is circulated through the floor heat exchanger 29 through a heat medium pipe 34. That is, the floor warming radiator 35 → the floor warming heat exchanger 29 → the reserve tank 36 → the circulation pump 37 → the floor warming radiator 35 is sequentially circulated. , And the floor warming radiator 35 radiates heat to perform floor heating.
[0020]
When the heater according to the present embodiment is operated, exhaust gas generated by the burner 24 rises through the heat exchanger 23 as shown by a solid arrow in FIG. Here, when the floor warming heat exchanger 29 side is closed by the damper 33 and the exhaust gas flows into the third exhaust passage 32 (the dashed line arrow in FIG. 3), the radiant heat radiated from the front surface of the heat exchanger 23 causes Only room heating is performed (floor warming stop). On the other hand, when exhaust gas is passed through the floor warming heat exchanger 29 (solid arrow), floor heating is also performed simultaneously with the heat medium circulating in the floor warming heat exchanger 29.
[0021]
Further, since the heat exchanger 23 is formed in a flat box shape and the wide surface thereof faces the room through the opening 20b, the radiation surface becomes large, and the heating performance is improved. Further, the air around the heat exchanger 23 smoothly rises and falls out of the slit 20d as shown by the two-dot chain line arrow in FIG. Therefore, natural convection of the heated air is promoted, and the heat exchange rate can be improved.
[0022]
Further, since the width of the heat exchanger 23 is reduced, the installation space can be reduced.
[0023]
Furthermore, at the time of minute combustion, the distance between the combustion flame A of the burner 24 and the front surface of the heat exchanger 23 is reduced by the narrow width of the heat exchanger 23 in the front-rear direction. The combustion flame A can efficiently heat the front surface of the heat exchanger 23 and increase the amount of radiation heat.
[0024]
In addition, the combustion flame A can be seen from the front of the cabinet 20 through the viewing window 28, and the feeling of heating as well as the confirmation of the combustion flame A does not deteriorate.
[0025]
FIG. 5 shows a second embodiment of the heater according to the present invention. In this embodiment, a floor warming heat exchanger 29 and an auxiliary heat exchanger 38 are arranged on the back of the heat exchanger 23 in parallel. The auxiliary heat exchanger 38 communicates with the heat exchanger 23 and the floor warming heat exchanger 29, and the exhaust gas flowing from the heat exchanger 23 flows in a meandering manner by a plurality of baffles 38a to improve the heat exchange efficiency. . The exhaust gas flowing from the floor warming heat exchanger 29 is exhausted through the exhaust passage 39 as it is.
[0026]
When the auxiliary heat exchanger 38 is installed on the back side in addition to the heat exchanger 23 and the floor warming heat exchanger 29 as in the present embodiment, the heat is also radiated from the auxiliary heat exchanger 38 and the heat exchange efficiency is further improved. Further, since the auxiliary heat exchanger ventilation 38 is provided side by side with the floor warming heat exchanger 29, it does not hinder the thinning of the heater. Other configurations and operations are the same as those of the first embodiment.
[0027]
FIG. 6 shows a third embodiment of the heater according to the present invention. In the third embodiment, a burner 24 and a combustion blower 25 are provided on a side surface of the heat exchanger 23. According to this embodiment, it is difficult to confirm the combustion flame A from the view window 28, but the thickness can be further reduced. Other configurations and operations are the same as those of the first embodiment.
[0028]
7 to 9 show a fourth embodiment of the heater according to the present invention, FIG. 7 is a schematic side view of the heater, FIG. 8 is a table showing the amount of radiant heat during minute combustion of the heater, FIG. 9 is a graph showing the amount of radiant heat during the minute combustion of the heater.
[0029]
As shown in FIG. 7, the heater according to the fourth embodiment has a flat box-shaped cabinet 40 as a whole, and is arranged such that the wide surfaces of the cabinet 40 are located in front and rear, as in the above-described embodiments. Have been. An opening 41 for a heat exchanger is formed on the front side of the cabinet 40, and a wire guard 42 for preventing contact with a finger or the like is provided.
[0030]
Next, device components installed inside the cabinet 40 will be described. That is, the heat exchanger 43 is installed on the front side of the cabinet 40. The heat exchanger 43 has a flat box shape with a small front-rear width (width dimension in the front-rear direction: 50 mm) similarly to the above-described embodiments, and a front panel 44 which is a wide surface of the heat exchanger 43 is provided. It is arranged to face the room through the opening 41 of the cabinet 40. A viewing window 45 made of heat-resistant glass is provided on the front panel 44.
[0031]
As shown in FIG. 2, the heat exchanger 43 has a mounting hole 46 bulging rearward near the lower rear portion thereof, and a burner 47 and a combustion blower 48 are mounted in the mounting hole 46. An exhaust gas outlet 49 is formed on the upper back surface of the heat exchanger 43, and the exhaust gas passes through the auxiliary heat exchanger 50 through the exhaust gas outlet 49 and is exhausted through the exhaust pipe 51.
[0032]
Here, the burner 47 and the combustion blower 48 are integrally attached to the back surface of the heat exchanger 43 to form a unit. The unit has a width of 197 mm in the front-rear direction, and the width in the front-rear direction including the cabinet 40. Is 295 mm.
[0033]
As described above, the installation space of the heater (heating output: 6,000 kcal / h) according to the present embodiment is 295 mm in the front-rear direction, but the conventional heating device (heating output) shown in FIGS. Is the same as the heater according to the present embodiment), the width in the front-rear direction is 425 mm. Therefore, when comparing the widths of the two in the front-back direction, the heater according to the present embodiment is about 30% thinner.
[0034]
The amount of radiant heat at the time of minute combustion will be described with reference to FIGS. In FIG. 9, the solid line and the black circle indicate the radiant heat of the heater of the present embodiment, and the broken line and black square indicate the radiant heat of the conventional heater. In FIGS. 8 and 9, the radiant heat measurement position at the center of the front of the heater is 0 °, and the measurement positions are 32 °, 52.7 °... The measurement positions were taken as −32 °, −52.7 °... −90 °, respectively, and the amount of radiant heat at each measurement position was measured.
[0035]
To explain this radiant heat value concretely, as shown in FIGS. 8 and 9, in the conventional heater, the maximum radiant heat is measured at the measurement center (0 °: 82 kcal · m ⁻² · h ⁻¹ ) in the front center. And the amount of radiant heat decreases toward the left and right measurement positions (−83.1 °: 37 kcal · m ⁻² · h ⁻¹ , 83.1 °: 15 kcal · m ⁻² · h ⁻¹ ). On the other hand, also in the heater according to the present embodiment, the measurement position (0 °: 100 kcal · m ⁻² · h ⁻¹ ) at the front center becomes the maximum radiant heat amount, and the left and right measurement positions (−83.1 °: 16 kcal). M- ² · h ⁻¹ , 83.1 °: 15 kcal · m ⁻² · h ⁻¹ ), the amount of radiant heat decreases.
[0036]
As described above, the radiant heat amount of the heater becomes larger toward the left and right at the center of the front of the heater, and the radiant heat amount becomes smaller. However, comparing the radiant heat amounts of the heaters according to the present embodiment as apparent from FIGS. 8 and 9. The amount of radiant heat on the front center side of the heater is much larger than that of the conventional heater. This is because the width of the heat exchanger 43 in the front-rear direction is small, and the distance between the combustion flame A of the burner 47 and the front surface of the heat exchanger 43 is small.
[0037]
【The invention's effect】
As described above, according to the present invention, radiant heat can be radiated from the entire front surface of the main body cabinet through the wide surface of the heat exchanger. The number of parts is small and the structure is simple, and the overall thickness of the heater can be reduced. Also, at the time of micro combustion, the distance between the combustion flame of the burner and the front of the cabinet is small due to the narrow width in the front-rear direction of the heat exchanger. Can be efficiently heated, and the amount of radiant heat can be increased.
[0038]
In addition, since the heated air around the heat exchanger smoothly rises along the wide surface of the heat exchanger extending in the height direction, the heat exchange efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a heater according to a first embodiment. FIG. 2 is a front view of a heater according to a first embodiment. FIG. 3 is a schematic side view of a heater according to the first embodiment. FIG. 5 is a schematic rear view of a heater according to a first embodiment. FIG. 5 is a schematic rear view of a heater according to a second embodiment. FIG. 6 is a heat exchanger, a burner and a blower for combustion according to a third embodiment. FIG. 7 is a schematic side view of a heater according to a fourth embodiment. FIG. 8 is a table showing the amount of radiant heat during minute combustion of the heater according to the fourth embodiment. 9 is a graph showing the amount of radiant heat of the heater according to the fourth embodiment at the time of minute combustion. FIG. 10 is a front view of a conventional heater. FIG. 11 is a schematic rear view of a conventional heater.
20, 40: Main cabinet, 23, 43: Heat exchanger, 24, 47: Burner, 28, 45: Viewing window, 29: Floor warming heat exchanger, 38, 50: Auxiliary heat exchanger, A: Combustion flame.

Claims (3)

A heat exchanger through which the air heated by the burner passes is arranged in the main body cabinet, and in a heater that radiates combustion heat from the front of the main body cabinet,
The heat exchanger is formed in a flat box shape having a small front-to-rear width, and a wide front surface of the heat exchanger is disposed on a front surface of a main body cabinet. A heater comprising the burner for forming a combustion flame by heating. Heater of claim 1, wherein <br/> that other heat exchanger communicating installed at least one to the heat exchanger on the rear side of the heat exchanger. The heater according to claim 2, wherein at least one of the other heat exchangers is a floor heating heat exchanger through which a heating medium for floor heating circulates .

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