JP2012167839A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater that prevents a metallic clang to be caused by expansion and contraction due to surface contact.SOLUTION: The heater includes a heat dissipating unit 4 that circulates combustion gas generated during combustion in a burner part 1 to dissipate heat. The heat dissipating unit 4 includes a laterally long partition plate 7 forming a front side serving as a heat dissipation surface and a rear side having an inlet 5 and an outlet 6 of the combustion gas. The partitioning plate 7 has a central lower end having a single spot weld 10, and left and right upper ends supported by left and right support fittings 12 and 13 in contact with the surface of the partition plate 7 at a plurality of points, thereby preventing a metallic clang even if the partition plate 7 is expanded or contracted due to thermal expansion.

Description

  The present invention relates to a heater that heats a radiator with combustion gas generated by combustion in a burner section to heat a room.

  Conventionally, this type is equipped with a partition plate that divides the inside of the radiator forward and backward, and guides the combustion gas flowing into the radiator from the rear to the front side, so that the front side of the radiator that becomes the heat radiation part is powerful It was heated and heat dissipation to the front was performed well. (For example, refer to Patent Document 1.)

JP 2007-298194 A

  By the way, in this conventional product, the partition plate itself is strongly heated, and therefore, between the partition plate and the fixing bracket for fixing the partition plate in the radiator due to thermal expansion during combustion and contraction during fire extinguishing. Since the expansion and contraction is suppressed, a metal sound called “kankan” is generated, which has a problem that is extremely harsh.

  This invention pays attention to this point, and solves the above-mentioned problems. In particular, the structure has a radiator that dissipates heat by circulating the combustion gas generated by burning of the burner portion, and a front surface that is a heat dissipation surface in the radiator. A partition plate in the form of a horizontally long plate that partitions the side and the back side having the combustion gas inlet and outlet, the partition plate is spot-welded at the center lower end, and the left and right upper ends are the partition plate It is supported by a left support bracket and a right support bracket that are in contact with the surface at a plurality of points.

  According to a second aspect of the present invention, a metal mesh is provided between the surface of the partition plate and the left and right support fittings to enable contact at a plurality of points.

  According to this invention, the horizontally long partition plate is supported at three points, the center lower end is spot-welded at one point, and the left and right upper ends are supported by the left and right support brackets that are in contact with the partition plate surface at a plurality of points. Unlike surface contact, the contact area is small and the contact area is small, and it supports but does not suppress expansion and contraction. It can be used with peace of mind.

  According to the second aspect of the present invention, since a metal mesh is provided between the partition plate surface and the left and right support fittings to make a multipoint contact, a multipoint contact can be made very easily, and an abnormal noise is achieved with a simple configuration. It is possible to obtain a good effect that does not occur.

The perspective view of the heater of one Embodiment of this invention. The perspective view which decomposed | disassembled the same part. The partial cutaway perspective view of the principal part. The other partial cutting perspective view of the principal part. Explanatory drawing of the partition plate of the same metal mesh attachment state. Sectional drawing before the thermal expansion of the principal part. Sectional drawing of the thermal expansion state of the principal part.

Next, a heater according to the present invention will be described based on an embodiment shown in the drawings.
Reference numeral 1 denotes a burner section which receives combustion air supply from a combustion fan 2 and fuel supply from a fuel supply means (not shown) and burns to generate combustion gas.

3 is a prismatic combustion cylinder located on the burner portion 1 and communicated with the burner portion 1, and a flat middle radiator 4 communicates with the upper portion.
The rear side of the radiator 4 has a shape protruding slightly outward, and has a combustion gas inlet 5 on the lower side of the front side, and an outlet 6 on the right side.

  7 is a horizontally long plate-like partition plate provided in the center so as to partition the inside of the radiator 4 forward and backward, and a plurality of 45 small holes 8 having a diameter of 5 mm are formed on the right inflow port 5 side. 54 small holes 9 having a diameter of 4.5 mm are roughly formed on the left outlet 6 side, and the inflowing combustion gas is actively introduced forward on the inlet 5 side so that the front surface of the radiator 4 is Heating is performed to increase the amount of heat dissipated in the far red, and the combustion gas that has flown forward flows out to the front instead of running backward on the outflow port 6 side.

  The partition plate 7 is supported at three points in the radiator 4 and is fixed by one-point spot welding 10 at the center lower end. When viewed from the front, the left end upper end and the right end upper end have 33 mesh and a wire diameter of φ0. 29. The metal mesh 11 made of Kanthal AF is folded back, covered to the upper end of the back surface and fixed by spot welding, and the metal mesh 11 is not contacted from above the two metal meshes 11 at normal time and only during thermal expansion by heating. Are supported by left and right support brackets 12 and 13 so as to come into contact with a plurality of points at the intersection of the braids, and the other end of the left support bracket 12 is fixed to the side of the partition plate 7 in the radiator 4 by welding. The other end of the right support fitting 13 is welded and fixed above the partition plate 7 in the radiator 4.

  On the other hand, a far red paint is applied to the front side of the radiator 4 to radiate far infrared rays, and a plurality of beads 14 are formed for reinforcement.

  Reference numeral 15 denotes a heat exchanger through which the combustion gas after passing through the radiator 4 circulates. The heat exchanger 15 is arranged on the back surface of the radiator 4 and has a plurality of pipes arranged side by side, and distributes the combustion gas after heating the radiator 4. Thus, the air blown by driving a convection fan (not shown) is discharged into the room as hot air by heat exchange.

Reference numeral 16 denotes a large viewing window formed in front of the combustion cylinder 3 so that a blue flame formed by the combustion of the burner portion 1 can be seen.
Reference numeral 17 denotes an operation unit provided in the upper front portion of the instrument main body 18, 19 denotes a display unit that displays the operation content and operation state of the operation unit 17, and 20 denotes a guard body that covers the front of the instrument main body 18.

  Next, the operation of this embodiment will be described. The combustion gas generated by the combustion of the burner portion 1 now flows from the combustion cylinder 3 through the inlet 5 into the radiator 4 where the combustion gas is separated from the partition plate 7. Although it is obstructed by itself, a plurality of small holes 8, 9 are formed at a position facing the inlet 5, and a part of the combustion gas flows through the small holes 8, 9 to the front surface in the radiator 4. By heating the front surface, far infrared rays are radiated from the radiator 4 to perform good heating.

  On the other hand, the combustion gas that has passed through the small hole 9 on one side of the partition plate 7 after heating the radiator 4 and the combustion gas that has flowed in from the inlet 5 and did not pass through the small holes 8, 9 flow on the side of the radiator 4. The air flows into the heat exchanger 15 from the outlet 6, and the indoor air blown from the convection fan (not shown) is warmed by heat exchange to heat the room warm.

  The partition plate 7 is for controlling the flow of a large amount of combustion gas to the front surface of the radiator 4 and adjusting it so as to emit far-infrared rays while preventing red heat, and faces the inlet 5. The small holes 8 of the part are formed densely, and the small holes 9 are formed so as to become rough when separated from them, thereby preventing red heat due to overheating of the front surface of the radiator 4 so as not to give the user anxiety. It is what.

  Further, as shown in the figure, the partition plate 7 is thermally expanded by heating and tries to contact the left and right support brackets 12 and 13. However, the partition plate 7 facing the left and right support brackets 12 and 13 has a surface on the surface. Since the metal mesh 11 is provided, the left and right support brackets 12 and 13 are in point contact with the intersections of the metal mesh 11 and do not suppress expansion due to surface contact as in the prior art. In addition, because of the support by a plurality of point contacts even when the partition plate 7 is contracted due to cooling, the restraining force is weak and the generation of “canning” noise can be prevented, giving the user anxiety. It can be used with peace of mind.

  Further, the partition plate 7 is bent into a “<” shape from the center in the height direction to the front, and has a strength so as not to be deformed even when a large amount of heat is applied. Therefore, deformation and burning are prevented, and the combustion gas can be guided well over a long period of time.

Here, since the lower end of the partition plate 7 is spot-welded 10 at one point, it extends about 2 mm upward due to thermal expansion and comes into contact with the left and right support fittings 12 and 13 as described above.
In addition to the metal mesh 11, the plurality of protrusions may be formed at the contact portions of the partition plate 7 or the left and right support fittings 12 and 13, as the contact at a plurality of points.

DESCRIPTION OF SYMBOLS 1 Burner part 4 Radiator 5 Inlet 6 Outlet 7 Partition plate 8, 9 Small hole 10 One-point spot welding 12, 13 Left and right support metal fittings

Claims (2)

  A radiator that circulates and dissipates the combustion gas generated by the combustion of the burner part, and a horizontally long plate that divides the front side serving as a heat radiating surface and the back side including the combustion gas inlet and outlet in the radiator. The partition plate is supported by a left support bracket and a right support bracket in which the central lower end is spot-welded at one point and the left and right upper ends are in contact with the partition plate surface at a plurality of points. A heater characterized by things.   The heater according to claim 1, wherein a metal mesh is provided between the partition plate surface and the left and right support fittings to enable contact at a plurality of points.

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