JP2010019469A - Method for mounting heat sink in heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting method for easily installing a radiating strip of high heat exchanging efficiency at a can body of an existing heater and preventing the radiating strip from slipping off even under the temperature variation of the can body. <P>SOLUTION: A spring member 4 is placed in a specific position of radiating strip metal 1 lined up on the surface of the can body, and a band is passed through a band insertion hole 42 of the spring member 4. When the band 2 is tightened using clamp fittings 3 at both ends, the spring member 4 functions to press and fix the arranged radiating strip metal 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for attaching a heat sink in a warming machine for heating a space in a house for horticultural horticulture or other similar spaces.

  Conventionally, as disclosed in Patent Document 1, as a warming machine for facility horticulture, a can body (also referred to as a combustion chamber) leaving a space between the inside of a sealed casing and the inner surface of the casing In order to take in the outside air in the casing, an outside air suction port equipped with a blower is provided, and the outside air taken in by the blower is heated from the inside by the flame of the burner and around the outer surface of each of the can body and the smoke tube It is known to heat the interior of the house by discharging the warm air heated in the room and releasing the warm air.

  There is also an attempt to increase the heat dissipation effect of the outer surface of the can body by increasing the surface area of the can body by providing fins on the outer surface of the can body, thereby increasing the efficiency of heat exchange to the outside air.

  Furthermore, in order to facilitate the attachment of the radiating fin to the can body, the applicant of the present application disclosed in Patent Document 2 below as shown in FIG. 5 with a metal strip 11 having excellent thermal conductivity such as aluminum. A band-shaped metal heat radiating plate 1 in which a plurality of heat radiating fins 12 are integrally provided by punching has been proposed. In the figure, reference numeral 13 denotes a chevron edge formed on both edges of the belt-shaped metal heat sink 1, and this chevron edge 13 is adjacent to the belt-shaped metal 1 when it is arranged on the surface of the can body as will be described later. Overlapping with the banded metal chevron edges ensures a parallel alignment with adjacent band metals.

  FIG. 4 shows a state in which the band-shaped metal radiator plate 1 shown in FIG. 5 is attached to the surface of the can body A of the warming machine by tightening the band 2 around the can body A in the circumferential direction. B shows the discharge pipe | tube of the air heated with the burner arrange | positioned inside the can body A. FIG.

In the figure, the heat radiating plate 1 is arranged in parallel with the long axis X direction of the can body A, and the heat radiating fins 12 are alternately arranged with the adjacent heat radiating plates, and the fastening band 2 of the can body A is arranged. It fastens in the circumferential direction and is fixed to the can body A by pressing down the heat sinks 1 arranged in parallel. Thereby, the arranged heat sinks 1 can be fixed on the can A relatively easily.
JP-A-5-133610 No. 2007-33859

  However, the can body of the warming machine itself is made of ordinary steel, and its surface temperature fluctuates within the temperature range of room temperature to 300 ° C. Furthermore, the heat sink usually has good workability and good thermal conductivity. Since it is made of an inexpensive metal such as aluminum alloy and stainless steel, and the fixing band is also made of hard stainless steel with relatively high strength, the thermal expansion of the base material of the can body and the heat sink is different. .

  Therefore, even if the heat sink arranged parallel to the axial direction of the can body is tightened and fixed to some extent, the band loosens due to the deformation of the heat sink or the temperature fluctuation of the can body surface, and the arranged heat sink becomes the surface of the can body There is a risk that it will fall off.

  An object of the present invention is to provide an attachment method in which a heat radiating plate having good heat exchange efficiency can be easily installed on a can body of a warming machine and does not slide down due to temperature fluctuations of the can body.

  In the present invention, a plurality of heat radiating plates are arranged in parallel on the outer surface of the cylindrical can constituting the combustion chamber in the major axis direction, and a fastening band is arranged on the arranged heat radiating plate in the circumferential direction of the can body. When tightening and fixing with a fixing device such as a winding or a buckle, it is tightened via a spring material arranged on the arranged heat radiating plates.

  As a form of a spring material made of an elastic metal plate, a metal that can maintain elasticity even at about 300 ° C. where the outer surface of the can body reaches, for example, a copper alloy, a chromium steel spring material, the cross-section is a triangle, other polygons, It arrange | positions on the arranged heat sink which provides the hole which lets a fastening band pass to the vertex, and the arrangement | sequence group of a heat sink is fastened and fixed through a fastening band to this. Thus, the occurrence of loosening due to the thermal expansion of the band is absorbed and adjusted by the expansion / contraction adjustment function by the elasticity of the spring material.

  As a result of the experiment, a V-shaped bending plate is placed horizontally and a band insertion hole is provided at the upper end of the V-shape, which requires the least amount of material and exhibits the most elasticity. It turns out that handling becomes easy.

  Further, when there is a possibility that the arranged heat sinks are softened, in order to prevent deformation due to the softening, a reinforcing material is disposed at the arrangement portion of the heat sinks to be reinforced.

  As the reinforcing material, a thin stainless steel round bar can be arranged at the joint location of the heat sinks connected to each other, or the joint location of the heat sink plates can be covered with a stainless steel frame material.

  By adjusting the expansion and contraction of the fixed band by using the spring material and further by using the reinforcing material, the heat sink can be prevented from being softened, and the function of the heat sink arranged on the surface of the can can be maintained for a long time.

  The embodiment of the present invention will be described with reference to an example in which the can body of an agricultural house is applied.

  The present invention is applied to the can body A having a length of 1550 mm and a diameter of 760 mm shown in FIG. 4, and the heat radiating plate 1 having a width of 70 mm and a height of the radiating fin shown in FIG. It applied to the warmer which changed direction alternately and was arranged in parallel.

  FIG. 1 is a partially enlarged view showing a fixed state of the radiator plate 1 of FIG. 4 by the band 2.

  In the figure, both edge portions 13 formed in a triangle of each heat sink 1 (three strip-shaped metals are shown), and end portions of adjacent strip-shaped metals in the length direction that are not shown. Are superimposed so that the arrangement of the respective band-like metals is performed accurately and reliably.

  In the embodiment of the present invention, a fastening member 3 and a spring material 4 according to the present invention are used to fasten the band 2 for fixing the arranged metal strips 1 for heat dissipation. The band 2 is made of stainless steel having a width of about 20 mm.

  FIG. 2 shows a spring material 4 having a thickness of 1.2 mm and a width of 32 mm. The spring material 4 is formed with a cushion portion 41 bent in a V shape and a band insertion hole 42 formed at the upper end of the cushion portion 41.

  A spring material 4 is placed at a specific position of the heat dissipating strip-shaped metal 1 arranged as shown in FIG. 1, the band is passed through the band insertion hole 42 of the spring material 4, and the band is made using the clamps 3 at both ends thereof. When tightening 2, the spring material 4 functions and is arranged to press and fix the heat dissipating strip-shaped metal 1.

  Thus, the fixed band-like metal 1 for heat dissipation continues to be tightened by the spring function of the spring material 4 even when the band 2 is loosened due to thermal expansion due to heating of the outer surface of the can body by the operation of the heater. As a result, the fixing of the arranged metal strips 1 for heat dissipation is stably maintained.

  When a soft aluminum alloy having a low softening temperature is used as the heat sink with the fins erected, it may be softened and deformed even if it is tightened with a fixing band.

  FIG. 3 shows an aspect of the reinforcing material 5 for preventing this. In the perspective view shown to Fig.3 (a), the reinforcing material 5 covers each edge part 13-1 and 13-2 which overlapped and connected the heat sinks 1-1 and 1-2 made from an adjacent aluminum alloy. Shown as a strengthening frame made of stainless steel. FIG. 3B shows a state viewed from the cross section. As shown in the figure, the overlapping portion of the chevron edges 13-1 and 13-2 formed on the side of the arrangement of the heat sinks 1-1 and 1-2 is covered with a reinforcing material 5 made of a stainless steel frame. And the whole arranged heat sink is strengthened by strengthening the overlapping part.

The fixation point of the strip | belt-shaped metal for thermal radiation arranged on the can body surface by this invention is shown. The spring material used for fixing the metal strip for heat dissipation is shown. The arrangement state of the reinforcing material is shown. The conventional fixed state by the band of the arranged metal strip for heat dissipation is shown. A conventional example of a strip metal for heat dissipation will be shown.

Explanation of symbols

A Heater can body B Air discharge pipe 1 Strip metal heat sink 11 Band plate 12 Radiation fin 13 Crest edge 2 Tightening band 3 Fastening bracket 4 Spring material 41 Cushion part 42 Band insertion hole 5 Reinforcing material

Claims (4)

On the outer surface of the cylindrical can body that constitutes the combustion chamber of the warming machine, a plurality of heat sinks, each with heat-dissipating fins, are arranged in parallel in the long axis direction. It is a method of attaching a heat sink of a warming machine that wraps and fixes a band for tightening in the circumferential direction,
A method of attaching a heat sink in a warming machine in which a spring material made of an elastic metal plate is arranged on the heat sink arranged when the band for fastening is wound and fixed.   2. A spring material made of an elastic metal plate is made of a V-shaped bent plate, is disposed with one side surface of the V shape being a lower surface, and has a band insertion hole formed on the upper surface of the other side surface of the V shape. The mounting method of the heat sink in the warmer as described in 2.   The chevron-shaped edges are formed on both sides of the heat radiating plate where the heat radiating fins are erected, and after arranging the chevron rims of the adjacent heat radiating plates on top of each other, The mounting method of the heat sink in the warmer of Claim 1 which arrange | positions a reinforcing material.   The mounting method of the heat sink in the warmer according to claim 3, wherein the reinforcing material arranged at the overlapping portion of the arranged heat sinks is made of a metal frame material that covers the edges of the heat sinks stacked.

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