JP7214516B2 - heater - Google Patents

Description

The present invention relates to heaters.

2. Description of the Related Art Conventionally, there is a natural convection type heater that has a heat generating part such as a sheathed heater and warms the air in a housing by the heat of the heat generating part, causing convection to warm the air in the room to be air-conditioned. Specifically, the housing has, for example, an air inlet at the bottom and an air outlet at the top. The low-temperature air taken in from the air inlet is warmed by the heat of the heat-generating part and rises due to the draft effect. The rising high-temperature air is discharged from the air outlet, causing air convection.

JP-A-4-359750

Since this kind of heater uses natural convection, it has the advantage of not scattering dust around it, compared to heaters such as oil fan heaters and gas fan heaters, which blow warm air with a fan or the like. be. In addition, since natural convection heaters do not ignite or burn, they have the advantage of not requiring ventilation of air-conditioned rooms. On the other hand, natural convection heaters require time to heat the air evenly after turning on the power. Therefore, natural convection heaters are required to have higher heating efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heater capable of improving heating efficiency.

In order to solve the above-described problems, the heater according to the present invention accommodates a plurality of heat generating parts and each of the heat generating parts inside, radiates the heat of the heat generating parts from the outer surface , and is installed vertically. a plurality of heat radiating portions having a plurality of horizontally adjacent fins extending in the horizontal direction, the plurality of horizontally adjacent fins forming flow paths for air flowing upward from below; The plurality of heat dissipating sections are arranged in the horizontal direction so that each of the fins is positioned within the flow path formed by the plurality of fins of the plurality of heat dissipating sections adjacent to each other in the vertical direction when viewed in the vertical direction. a housing that is staggered and accommodated in the vertical direction; and both ends in the horizontal direction; and a plurality of fixtures that are fixed to each other, each of the heat radiating parts has the same shape, each of the fixtures has the same shape, and the positions of the both ends between the plurality of fixtures are adjusted in the horizontal direction. are aligned and fixed in the housing, and the fixing positions of the heat radiating parts are different between the plurality of fixtures adjacent in the vertical direction, so that the plurality of heat radiating parts are displaced in the horizontal direction. do.

In the heater according to the present invention, heating efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view seen from the front side of the heater which shows one Embodiment of the heater which concerns on this invention. The side view seen from the left side with the right and left panels of the heater removed. The side view which looked at the heater of FIG. 2 from the right side. The perspective view which removed the right-and-left panel of a heater, and was seen from the rear surface side explaining a thermal radiation unit. FIG. 3 is a cross-sectional view taken along line VV of FIG. 2; FIG. 3 is an end view along line VI-VI of FIG. 2; The block diagram of the heat radiation part which the heater has as a modification in case a heat-generation part is extended in an up-down direction.

An embodiment of a heater according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front perspective view of a heater 1 showing an embodiment of the heater according to the present invention.
FIG. 2 is a side view of the heater 1 with the left and right panels 35 removed and viewed from the left side.
FIG. 3 is a side view of the heater 1 of FIG. 2 as seen from the right side.
FIG. 4 is a perspective view of the heater 1 with the left and right panels 35 removed and the heat dissipation unit 80 viewed from the rear side.
5 is a cross-sectional view taken along line VV of FIG. 2. FIG.
6 is an end view along line VI-VI of FIG. 2. FIG.

In the following description, "front (front)", "rear (back)", "top", "bottom", "right" and "left" follow the definitions in FIGS. The vertical direction corresponds to the vertical direction when the heater 1 is installed. The front-rear direction and the left-right direction correspond to the horizontal direction when the heater 1 is installed.

The heater 1 mainly includes a heat radiating section 10 , a heat generating section 20 , a housing 30 , a heat shield plate 50 and a fixture 60 .

The heat radiation part 10 accommodates the heat generating part 20 (FIG. 5) inside and radiates the heat of the heat generating part 20 from the outer surface. The heat radiating portion 10 is, for example, an aluminum alloy die-cast product. The heat radiating section 10 has a heat generating section accommodating section 11 and fins 12 . The heat-generating part accommodating part 11 has a right surface 13 having a surface direction along the front-rear direction, and a left surface 14 facing the right surface 13 in the left-right direction and having a surface direction along the front-rear direction. The heat generating portion 20 is accommodated between the right surface 13 and the left surface 14 . The fins 12 are a plurality of fins 12 protruding substantially vertically from the right surface 13 and the left surface 14 and extending in the vertical direction when installed (having a surface direction along the vertical direction). The plurality of fins 12 are adjacent to each other in the front-rear direction (horizontal direction), and are arranged at substantially equal intervals, for example. The fins 12 radiate the heat of the heat-generating part 20 from the outer surface, and at the same time form a flow path 16 for air flowing upward from below. The heat radiating section 10 has through holes 15 ( FIG. 6 ) for being supported by fixtures 60 . Two through-holes 15 are formed symmetrically about the center in the front-rear direction, and are formed so as to pass through the fins 12 in the left-right direction.

The heat radiating section 10 is a plurality of heat radiating sections arranged in the vertical direction and accommodated in the housing 30, and has an upper heat radiating section 10a, a middle heat radiating section 10b, and a lower heat radiating section 10c. For example, the upper heat radiation portion 10a, the middle heat radiation portion 10b, and the lower heat radiation portion 10c have substantially the same shape (outer shape) including the shape of the fins 12, the dimensions of the fins 12, and the spacing between the adjacent fins 12.

The heating part 20 is, for example, a sheathed heater having terminals (not shown) at both ends. The heat generating portion 20 has a U-shape extending mainly in the front-rear direction. The exothermic part 20 is housed inside each heat radiating part 10 with its terminals exposed. For example, the heat generating portion 20 is integrally formed with the heat radiating portion 10 by being cast inside the heat radiating portion 10 .

The housing 30 accommodates the heat radiating section 10 and forms an outer shell of the heater 1 . The housing 30 has a front plate 31 , a rear plate 32 , a lower plate 33 , an upper cover 34 and left and right panels 35 . The front plate 31, the rear plate 32, the lower plate 33, the upper cover 34, and the left and right panels 35 are made of thin steel plates such as cold-rolled steel plates and hot-dip galvanized steel plates.

The front plate 31 is arranged along the front surface of the heater 1 . The front plate 31 has a display portion 37, an operation portion 38, and a front handle 39a. The display unit 37 is, for example, a liquid crystal display panel that displays the operating state and operation details of the heater 1 . The operation unit 38 receives instructions for turning on/off the power of the heater 1 and for operation details. The front handle 39a is arranged above the display unit 37 and used for moving the heater 1 by the user. The rear plate 32 is arranged along the rear surface of the heater 1 . The rear plate 32 has a rear handle 39b at a position paired with the front handle 39a in the front-rear direction. The front plate 31 and the rear plate 32 have a pair of inner walls 31a, 32a (FIG. 6) facing each other in the front-rear direction.

The lower plate 33 is arranged along the lower surface of the heater 1 . The lower plate 33 serves as a base for the front plate 31 , the rear plate 32 and the heat shield plate 50 . The lower plate 33 has an air inlet 40 ( FIG. 4 ) for taking air into the heater 1 . The lower plate 33 has a pair of caster-equipped legs 41 used to move the heater 1 at positions that form a pair in the front-rear direction below.

The upper cover 34 is arranged upward along the upper surface of the heater 1 . The upper cover 34 has a grille 42 , a wire mesh 43 and panel fixtures 45 . The grille 42 has an air outlet 46 that serves as an outlet for air taken in from the air inlet 40 and flowing primarily through the flow path 16 from bottom to top. A wire mesh 43 is arranged below the grille 42 so as to block the air outlet 46 . The panel fixture 45 is a frame member that is arranged below the wire netting 43 and spans between the pair of heat shield plates 50 in the front-rear direction. The panel fixture 45 has claw portions 45a, which are structures for fixing the left and right panels 35, on the left and right frame surfaces.

The left and right panels 35 are arranged along the left and right side surfaces of the heater 1, respectively. The left and right panels 35 cover and shield the heat radiating section 10 in order to ensure the safety of the user against high-temperature heat from the heat radiating section 10 . Thereby, the inside of the heater 1 is not visually recognized by the user.

The left and right panels 35 have inner folds (not shown) at their upper ends. The upper ends of the left and right panels 35 are fixed by hooking the claws 45 a of the panel fixture 45 on the folded back. The lower ends of the left and right panels 35 are fixed by being screwed to the lower plate 33 . Front and rear ends of the left and right panels 35 are engaged with the front plate 31 and the rear plate 32, respectively. The central portion 36a of the left and right panels 35 has a shape that bulges away from the heat radiating portion 10 with respect to the outer edge portion 36b. As a result, the left and right panels 35 are fixed in a non-contact manner with the heat shield plate 50 , and a certain gap is provided between them and the heat radiating section 10 . Therefore, the left and right panels 35 are prevented from excessive temperature rise.

The heat shield plate 50 is made of, for example, a thin steel plate, and shields heat from the heat radiating portion 10 between the pair of inner walls 31 a and 32 a of the front plate 31 and the rear plate 32 and the heat radiating portion 10 . That is, the heat shields 50 are a pair of heat shields 50 having a front heat shield 50a and a rear heat shield 50b. As shown in FIG. 6 , the front heat shielding plate 50a is arranged between the inner wall 31a of the front plate 31 and the front end 19a of the heat radiating section 10 . The rear heat shield plate 50 b
b. The heat shield plate 50 is provided at least in a vertical range where the heat radiating section 10 is arranged. As a result, the heat shield plate 50 separates the heat radiating section 10 from electronic components such as circuit boards and wiring provided on the inner walls 31a and 32a of the front plate 31 or the rear plate 32, thereby separating the heat radiating section 10 from the electronic components. isolated from The heat shield plate 50 has a lower portion fixed to the lower plate 33 serving as a base, and an upper portion fixed to a panel fixture 45 positioned above the heat shield plate 50 . Thus, the heat shield plate 50 and the panel fixture 45 constitute the internal skeleton of the heater 1 .

The fixture 60 is made of, for example, a thin steel plate, supports the heat radiating section 10, and has both ends 65 and 75 fixed (constructed) to the pair of heat shield plates 50 in the front-rear direction. Specifically, the fixture 60 has a right fixture 61 and a left fixture 71 . The pair of fixtures 60 support the heat radiating section 10 on the left and right sides and are fixed to the heat shield plate 50 . be.

The right fixture 61 supports the heat radiating section 10 on the right surface 13 side of the heat radiating section 10 and is fixed to the pair of heat shielding plates 50 on the right surface 13 side. The right fixture 61 has a substantially linear shape in the front-rear direction and has both ends 65 fixed to the heat shield plate 50 . The right fixture 61 has a right fixture-side bolt hole 67 and a lightening portion 68 . The right fixture side bolt hole 67 is a hole through which a bolt 81 for connecting the right fixture 61 , the left fixture 71 and the heat radiating section 10 passes, and is provided at a position corresponding to the through hole 15 . The lightening part 68 makes it difficult for heat to be conducted from the fixture 60 to the heat shield plate 50 .

The left fixture 71 supports the heat radiating section 10 on the left surface 14 side, and is fixed to the pair of heat shield plates 50 on the left surface 14 side. The left fixture 71 has a base portion 72 and a hanging portion 73 . The base portion 72 has a substantially linear shape in the front-rear direction and has both ends 75 fixed to the heat shield plate 50 . The hanging portion 73 has ends in the front-rear direction near the center from both ends 75 of the base portion 72 and has a shape that hangs down from the base portion 72 . The hanging portion 73 has a left fastener-side bolt hole 77 and a lightening portion 78 . The left fixture-side bolt hole 77 has the same function as the right fixture-side bolt hole 67 and is provided at a position corresponding to the through hole 15 . The cutout portion 78 has the same function as the cutout portion 68, and is formed in the widest possible range of the hanging portion 73 other than the region where the left fastener-side bolt hole 77 is formed.

The fixtures 60 are a plurality of fixtures corresponding to the number of the heat radiating sections 10 . Each fixture 60 supports each heat radiating section 10 and is fixed to a pair of heat shielding plates 50 . Specifically, the fixtures 60 are composed of a pair of upper fixtures 60a that support the upper heat radiating section 10a, a pair of middle fixtures 60b that support the middle heat radiating section 10b, and a pair of lower fixtures 60c that support the lower heat radiating section 10c. and have The upper fixture 60a, the middle fixture 60b, and the lower fixture 60c are substantially identical in shape and size, except for the positions of the right fixture-side bolt holes 67 and the left fixture-side bolt holes 77, respectively.

Each pair of fixtures 60 (upper fixture 60a, middle fixture 60b, lower fixture 60c) sandwiches and connects (fixes) the heat dissipation part 10 (upper heat dissipation part 10a, middle heat dissipation part 10b, lower heat dissipation part 10c). Thus, a heat dissipation unit 80 integrated with the heat dissipation part 10 is formed. As shown in FIG. 6, in the heat dissipation unit 80, the heat dissipation part 10 is sandwiched between a right fixture 61 arranged on the right face 13 side and a left fixture 71 arranged on the left face 14 side. A bolt 81 passes through the left fixture side bolt hole 77, the through hole 15, and the right fixture side bolt hole 67 in order, and the bolt 81 is tightened with a nut 82 on the right fixture 61 side, whereby the heat dissipation unit 80 is are integrated.

A connection structure with bolts 81 and nuts 82 has spacers 83 and washers 84 . The spacer 83 is inserted into the through hole 15 while being arranged outside the bolt 81 . The spacer 83 is longer than the length of the through hole 15 of the heat radiating section 10 and protrudes slightly from the ends 15 a and 15 b of the through hole 15 . The washer 84 is arranged between the right end 15 a of the through hole 15 and the inner surface 61 a of the right fixture 61 and between the left end 15 b of the through hole 15 and the inner surface 71 a of the left fixture 71 . The bolt 81, nut 82 and spacer 83 are made of a material (for example, stainless steel) having similar thermal conductivity. The washer 84 is made of a material with low thermal conductivity and heat resistance (for example, Teflon (registered trademark)) or a stainless steel wave washer with a reduced contact area to suppress heat conduction.

Spacer 83 and washer 84 are provided to avoid direct contact between heat radiating section 10 and fixture 60 . That is, the end 83a of the spacer 83 protruding from the through-hole 15 forms a gap between the fixture 60 and the ends 15a and 15b of the through-hole 15, and the heat-resistant washer 84 is arranged in the gap. . As a result, the fixture 60 is out of contact with the heat radiating section 10 , and the heat of the heat radiating section 10 can be prevented from being directly transmitted to the fixture 60 . In addition, the bolt 81, the nut 82, and the spacer 83 are made of materials having substantially the same thermal conductivity or the same material, so that the amount of expansion and contraction due to heat becomes the same, and the thermal expansion affects the support of the heat radiating section 10. In addition, the influence of distortion and the like on fixing to the heat shield plate 50 is suppressed.

By the way, it is preferable that the heater 1 efficiently heat-exchanges the air taken in from the air inlet 40 with the heat radiating part 10 and discharges the air from the air outlet 46 . In addition, the heater 1 is required to uniformly raise the temperature inside the housing 30 to improve the heating efficiency and improve the usability of the user. In order to realize these, the heater 1 in the present embodiment has a plurality of fins 12 intermittently formed in the vertical direction, and when the heater 1 is viewed in the vertical direction, the fins 12 are vertically adjacent to each other. is located within the flow path 16 formed by the fins 12 of the .

Specifically, as shown in FIGS. 2 and 3 , when the heater 1 is viewed in the vertical direction (planar view), each heat radiation unit 10 has a plurality of horizontally adjacent fins 12 . The fins 12 of the vertically adjacent heat dissipating portions 10 are positioned within the region of the flow path 16 formed by . That is, each fin 12a of the upper heat radiating section 10a is positioned within the range of the width (longitudinal length) of the flow path 16b formed by the plurality of horizontally adjacent fins 12b of the middle heat radiating section 10b adjacent below. do. Further, each fin 12b of the middle heat radiation section 10b is positioned within the range of the width of the flow path 16c formed by the plurality of horizontally adjacent fins 12c of the lower heat radiation section 10c adjacent below.

Such a configuration is realized, for example, by arranging a plurality of vertically adjacent heat radiating sections 10 shifted in the front-rear direction (horizontal direction) by a distance smaller than the width of the flow path 16 . That is, in the fixture 60, the right fixture-side bolt hole 67 and the left fixture-side bolt hole 77, which are the fixing positions of the heat radiating section 10, are located between the upper fixture 60a and the lower fixture 60c, and the middle fixture 60b. are shifted in the front-rear direction. As a result, when both ends 65 and 75 of the upper fixture 60a, the middle fixture 60b, and the lower fixture 60c are aligned in the front-rear direction and fixed to the heat shield plate 50, the upper heat radiating portion 10a, the middle heat radiating portion 10b, and the lower heat radiating portion are mounted. The portions 10c are arranged in the housing 30 with a shift in the front-rear direction.

The amount of displacement of the vertically adjacent fins 12 is not particularly limited, but is preferably about 1/2 of the width (length in the front-rear direction) of the flow path 16, for example. This is because the air that collides with the lower ends of the fins 12 is uniformly diffused.

Such a heater 1 can improve heating efficiency. That is, as shown in FIG. 5, when the air passing through the flow paths 16c formed by the fins 12c of the lower heat radiating section 10c rises to the upper ends 17c of the fins 12c, it collides with the lower ends 18b of the fins 12b of the middle heat radiating section 10b. Further, when the air passing through the flow paths 16b formed by the fins 12b of the middle heat radiating section 10b rises to the upper ends 17b of the fins 12b, it collides with the lower ends 18a of the fins 12a of the upper heat radiating section 10a. The colliding air diffuses in the left-right direction together with heat, so the heat in the housing 30 is easily diffused. As a result, the air inside the housing 30 is suitably mixed, and the temperature is made uniform.

Therefore, the heater 1 can efficiently transfer the heat of the heat radiating part 10 to the air, and can improve the rapid warming performance of uniformly and quickly warming the entire heater 1 . In addition, the improvement of the heat transfer rate from the heat radiating part 10 to the air can suppress the heat radiating part 10 from increasing in temperature, thereby improving the safety of the heater 1 and suppressing the decrease in durability due to the high heat. Furthermore, the heater 1 can equalize the temperature of the air discharged from the air outlet 46, and can improve the usability of the user.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

For example, when the heater 1 is viewed in the vertical direction, each fin 12 is positioned within the flow path 16 formed by a plurality of vertically adjacent fins 12, so that the fixing position between the fixture 60 and the heat radiating section 10 is set to Although the heat dissipating portions 10 adjacent to each other are shifted vertically, other methods may be used. For example, the fixing positions of both ends 65 and 75 of the fixture 60 with respect to the heat shield plate 50 may be shifted in the vertical direction between adjacent heat radiating sections 10 . In addition, the formation positions of the fins 12 in the heat radiating section 10 may be shifted between adjacent heat radiating sections 10 in the vertical direction.

Furthermore, although an example in which the heat generating portion 20 is a U-shaped sheathed heater that extends mainly in the horizontal direction has been described, it may extend in the vertical direction, or may have another shape such as an I-shape or an L-shape. It may be another type of heater.

For example, FIG. 7 is a configuration diagram of a heat radiating section 110 of a heater as a modified example in which the heat generating section extends vertically. The heat radiating portion 110 differs from the heat radiating portion 10 of the heater 1 in that the heat generating portion housing portion 111 houses a U-shaped heat generating portion extending mainly in the vertical direction with the terminals exposed downward. be. Such a heat radiation portion 110 is intermittently formed by having fins 112 having cut portions 113 in the vertical direction. Further, the fins 112 are displaced in the left-right direction (horizontal direction) with respect to the fins 112 vertically adjacent to each other through the cut portions 113, so that the flow formed by the vertically adjacent fins 112 when viewed in the vertical direction. Located within road 116 . Thus, the heater according to the present invention can be applied to any heater without being limited to the direction in which the heat-generating portion is arranged.

1 heaters 10, 10a, 10b, 10c, 110 heat radiating parts 11, 111 heat generating part accommodating parts 12, 12a, 12b, 12c, 112 fins 15 through holes 16, 16b, 16c, 116 flow path 20 heat generating part 30 housing 31 Front plate 32 Rear plate 33 Lower plate 34 Upper cover 35 Left and right panels 50, 50a, 50b Heat shield plate 60 Fixing tool 61 Right fixing tool 65, 75 Both ends 68, 78 Lightening part 71 Left fixing tool 80 Heat dissipation unit 113 Cutting part

Claims (3)

a plurality of heat generating parts;
Each of the heat-generating parts is housed inside, the heat of the heat-generating parts is dissipated from the outer surface, and a plurality of fins extending in the vertical direction at the time of installation are horizontally adjacent to each other, and the plurality of horizontally adjacent fins are provided. a plurality of heat radiating parts forming flow paths for air flowing upward from below with fins ;
When the plurality of heat dissipating portions are viewed in the vertical direction, each of the fins is positioned within the flow path formed by the plurality of fins of the plurality of heat dissipating portions adjacent to each other in the vertical direction. a housing that accommodates the heat dissipating units by displacing them in the horizontal direction and arranging them in the vertical direction;
a plurality of fixtures having both ends in the horizontal direction, fixing each of the heat radiating parts between the both ends, and fixing each of the heat radiating parts in the housing via the both ends ;
Each of the heat radiating parts has the same shape,
Each of the fixtures has the same shape, is fixed in the housing by aligning the positions of both ends between the plurality of fixtures in the horizontal direction, and is adjacent to the plurality of fixtures in the vertical direction. The heater, wherein the plurality of heat radiating parts are arranged to be shifted in the horizontal direction by differentiating fixed positions of the heat radiating parts between the heat radiating parts . 2 . The heater according to claim 1 , wherein the plurality of vertically adjacent heat radiating portions are arranged to be shifted in the horizontal direction by a distance smaller than the width of the flow path. 3. The heater according to claim 1 , wherein the housing has an air inlet provided downward and an air outlet provided upward.

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