JP2008111565A - Electric stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric stove capable of allowing heat of a prescribed quantity to reach an object to be heated at a far place from a heating element. <P>SOLUTION: This electric stove 1 comprises the heating element 11, a reflecting plate 12 and a guard portion G disposed in a state of covering a front part of the heating element 11. The guard portion G has a blockage inhibiting portion A occupying a part of the region of the guard portion G and formed so that a density of a blocking area of a guard constructional element 13 for blocking the passing of the heat radiated from the heating element 11 becomes smaller than a density of a blocking area in a region near the circumference surrounding the region. The blockage inhibiting portion A is formed along the heating element 11 to be opposed to a front part of the heating element 11 in the guard portion G. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electric stove in which a guard portion for preventing a user's finger or the like from entering is disposed in front of a heating element.

  2. Description of the Related Art Conventionally, floor-standing electric heaters that use a heating element such as a sheathed heater or a quartz tube heater to warm the surroundings have been used. As such an electric heater, for example, an electric heater described in Patent Document 1 is known. As shown in FIGS. 4 and 7 in Patent Document 1, this electric stove is provided with a protection bar 24 so as to cover the front surface of the casing 23. This prevents the object to be heated from excessively approaching the heating element 21 and prevents, for example, the user of the electric heater from touching the heating element 21 installed in the casing 23 by mistake.

JP 2006-38238 A

  As described above, the protection rail 24 is not only formed at a narrower interval than the width of the finger or the like so that the user's finger or the like can be prevented from entering. It is configured to have a predetermined strength so as not to deform. However, since the protection bar 24 is installed in front of the heating element 21, a part of the heat (radiant heat) radiated from the heating element 21 toward the front is reflected or absorbed by the protection bar 24. Since the members constituting the protection bar 24 are arranged substantially evenly over the entire front surface of the heating element 21, the heat radiated from the heating element 21 toward the outside is uniform over the entire surface of the protection bar 24. The distance that the predetermined amount of heat can reach is shortened, and there is a possibility that the heating efficiency to the heating object located in front of the electric stove may be reduced.

  An object of this invention is to provide the electric stove which can transmit heat | fever efficiently with respect to the heating object located ahead by considering the said situation.

  An electric stove according to a first aspect of the present invention includes a heating element, a reflector that is installed behind the heating element and reflects heat radiated from the heating element, and a guard component made of a linear body or a net-like body And a guard part installed so as to cover the front of the heating element, and the guard part occupies a part of the guard part and blocks passage of heat radiated from the heating element. And a blocking suppression portion formed so that a density of a blocking area of the guard component member is smaller than a density of a blocking area in a peripheral region surrounding the region, and the blocking suppression portion generates the heat generated in the guard portion. It is formed along the heat generating body so as to face the front of the body.

  In this electric stove, since the blocking suppression part is formed in the part of the guard part that is located in front of the heating element, in the range where the blocking suppression part is formed, the heat radiated forward from the heating element is not generated. It is possible to suppress obstruction by the guard component. As a result, a predetermined amount of heat can be transmitted to the heating object located farther in the direction of passing through the blocking suppression unit starting from the position of the heating element. Therefore, by providing the guard portion having the above-described configuration, it is possible to prevent a user's finger or the like from coming into contact with the heating element, and to maintain a predetermined strength so that the guard component member is not easily deformed by an external impact. In addition, it is possible to efficiently transfer heat to the heating object located in front of the electric stove. And it becomes possible to make a predetermined amount of heat reach | attain the heating object in the position farther away.

  An electric stove according to a second aspect of the present invention is the electric stove according to the first aspect of the present invention, wherein the blocking suppression portion is formed at a position closest to the heating element in the guard portion.

  In this electric stove, since the blocking suppression part is close to the heating element, the ratio of the heat radiated to the outside through the blocking suppression part out of the heat radiated from the surface of the heating element to the surroundings becomes large. . And in the range in which the blocking suppression part is formed, the heat radiated from the heating element is suppressed from being hindered by the guard constituent member, so that the radiant heat from the heating element can be efficiently transmitted to the outside. It becomes possible.

  An electric stove according to a third invention is the electric stove according to the first or second invention, wherein the heating element is formed as a rod-like member extending in one direction, and the blocking suppression portion is arranged in a longitudinal direction of the heating element. It is formed by one gap extending in parallel.

  In this electric stove, the heating element can have a simple shape. The shape of the blocking suppression portion is also a simple shape. Since the blocking suppression part is formed by one gap, the heat radiated from the heating element is not blocked within the entire range where the blocking suppression part is formed, and the radiant heat from the heating element is more efficiently generated. It can be transmitted to the outside. In addition, since the blocking suppression unit extends in parallel with the heating element, the range for forming the blocking suppression unit occupies a wider range in front of the heating element without excessively increasing in the direction perpendicular to the heating element. It is possible to Thus, it is possible to efficiently radiate heat from the heating element toward the front without excessively reducing the guard function for preventing the finger or the like from entering by the guard portion.

  An electric stove according to a fourth aspect of the present invention is the electric stove according to the first or second aspect, wherein the heating element is formed as a rod-like member extending in one direction, and the shut-off suppressing portion is arranged in the longitudinal direction of the heating element. A plurality of gaps extending in parallel are formed in series in the direction.

  In this electric stove, since the interruption suppressing part extends in parallel with the heating element, the range in which the interruption suppressing part is formed is wider than the front side of the heating element without being excessively increased in the direction perpendicular to the heating element. It is possible to occupy. As a result, it is possible to efficiently radiate heat forward from the heating element without deteriorating the guard function for preventing the entry of a finger or the like by the guard portion. And since the interruption | blocking suppression part is formed with a several space | gap, it becomes possible to improve a guard function with the guard structural member located between adjacent space | gap.

  An electric stove according to a fifth aspect of the present invention is the electric stove according to at least one of the first to fourth aspects of the invention, wherein the guard component member is composed of a plurality of linear bodies, and the blocking suppression portion is the blocking suppression portion. It is formed by reducing the arrangement density of the linear bodies as compared with the surrounding area.

  In this electric stove, the blocking suppression portion is formed so as to reduce the number of linear bodies passing through the range of the blocking suppression portion, and the arrangement density of the linear bodies is smaller than other portions. It is formed to become. Here, the arrangement density of the linear bodies is calculated as the number of linear bodies arranged in a predetermined unit area in the guard portion. Therefore, for example, the blocking suppression part can be easily formed by partially thinning the linear body or bending the linear body so as not to pass through a predetermined range. Thereby, it becomes possible to form a guard part, without giving a complicated process to the linear body to be used.

  An electric stove according to a sixth aspect of the present invention is the electric stove according to at least one of the first to fourth aspects of the invention, wherein the guard component member is composed of a plurality of linear bodies, and the blocking suppression portion is the blocking suppression portion. Compared with the said linear body of circumference | surroundings, it forms with the said linear body with the small interruption | blocking area per unit length which interrupts | blocks the heat | fever radiated | emitted from the said heat generating body.

  In this electric stove, the blocking suppression portion is formed by forming a part of the linear body so that the blocking area becomes small. According to this configuration, since the blocking suppression portion can be formed even if the linear body is provided uniformly over the entire guard portion, it is possible to suppress the heat radiated from the heating element from being excessively blocked. In addition, it is possible to form a guard portion having a higher guard function for preventing the entry of a finger or the like.

  The electric stove according to a seventh aspect of the invention is the electric stove according to the sixth aspect of the invention, wherein the shut-off suppressing portion is flattened in a cross-sectional shape crushed in a direction perpendicular to the direction from the heating element toward the shut-off suppressing portion. It is formed by a linear body.

  In this electric stove, since the blocking suppression portion can be easily formed by partially crushing the linear body, the manufacturing cost can be reduced. In addition, since the linear body can be arranged so as to cross the front of the heating element, the arrangement of the linear body is not complicated, and the linear body can be easily arranged to enhance the guard function by the guard portion. It becomes possible.

  An electric stove according to an eighth aspect of the invention is the electric stove according to the sixth aspect of the invention, wherein the blocking suppression portion is formed by the linear body that is thinner than the linear body around the blocking suppression portion. .

  In this electric stove, the blocking body can be easily formed by forming the linear body partly thin, and the blocking area is not easily changed even if the linear body rotates around the axis. The guard part can be manufactured in the manufacturing process, and even if it is deformed by an external impact during use, it is less affected by the heat blocking area and stably suppresses the heat blocking from the heating element. It is possible to exert an effect. In addition, since the linear body can be arranged so as to cross the front of the heating element, the arrangement of the linear body is not complicated, and the linear body can be easily arranged so as to enhance the guard function by the guard portion. Become.

  An electric stove according to a ninth aspect of the invention is the electric stove according to at least one of the first to fourth aspects of the invention, wherein the guard constituent member is formed of a net-like body, and the shut-off suppressing portion is formed of the shut-off suppressing portion. It is formed by enlarging the mesh of the mesh body compared to the surroundings.

  In this electric stove, it is possible to easily form the guard part integrally with a small number of parts. By forming the guard part integrally, it is effective because the guard part can be easily attached and detached.

As described above, according to the present invention, the following effects can be obtained.
In the 1st-4th invention, since the interruption | blocking suppression part is formed in the part located ahead of the heat generating body in a guard part, it suppresses that the heat radiated from a heat generating body is prevented by the guard structural member. It becomes possible to do. As a result, heat can be efficiently transmitted in the direction of passing through the blocking suppression portion starting from the position of the heating element, and a predetermined amount of heat can be transmitted to the heating object at a further distance. .

  In the fifth invention, a linear body is used as the guard constituent member, and the guard portion can be formed without subjecting the linear body to complicated processing.

  In 6th-8th invention, a linear body is uniformly formed in the whole guard part by using a linear body as a guard component, and forming a part of the said linear body so that the interruption | blocking area may become small. Even if it is arranged, a blocking suppression part can be formed, so that it is possible to suppress the heat radiated from the heating element from being excessively blocked, and a guard part with a higher guard function to prevent intrusion of fingers, etc. It is possible to form.

  In the ninth invention, it is possible to easily form the guard part integrally with a small number of parts by using a net-like body as the guard constituent member.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view seen from the front side of the electric heater 1 according to the embodiment of the present invention, and FIG. 2 is a perspective view seen from the rear side. FIG. 3 is a front view of the electric heater 1. 4 is a cross-sectional view taken along line XX in FIG.
As shown in FIGS. 1 to 3, the electric stove 1 includes a stand base 2, a support column 3, and a heater body 4.

  The heater body 4 includes a casing 10 having a substantially rectangular opening on the front surface, a heating element 11 installed in the casing 10, and a heating element 11 installed behind and on the side of the heating element 11 in the casing 10. A reflecting plate 12 that reflects the radiated heat forward, and a guard portion G that is installed so as to cover the opening of the casing 10 positioned in front of the heating element 11 with a plurality of wires 13 (guard component members). Yes. The heater body 4 is rotatable with respect to a support column 3 erected from a stand base 2 installed on the floor surface within a predetermined angle range around the support column 3. It is attached so that it can incline with respect to the said support | pillar 3 within the range of a predetermined angle. Further, the heater body 4 is attached to the support column 3 so that the heater body 4 can be changed from the vertical direction to the horizontal direction (shown in the horizontal direction by a two-dot chain line in FIG. 3).

  The heating element 11 is formed of a sheathed heater formed in a rod shape, and two heating elements 11 are arranged in a row at a predetermined interval so as to extend in parallel with the longitudinal direction of the casing 10 in the casing 10. The heating element is not limited to a sheathed heater, and may be a quartz tube heater, a ceramic heater, or the like.

  As shown in FIG. 4, for example, the reflector 12 focuses the heating element 11 so that the heat radiated from the heating element 11 can be reflected in a substantially forward direction (direction indicated by an arrow in the figure). It is formed to be curved so as to have a parabolic shape in cross section.

  The guard part G uses a plurality of wire rods 13 (wire bodies) formed of a metal such as steel as a guard component, and is formed by partially joining the plurality of wire rods 13. And the guard part G is comprised so that the wire 13 may mutually be couple | bonded together, and it is comprised as a whole, and is installed so that removal from the casing 10 is possible. In addition, you may use the guard structural member which gave the plating etc. which improve a reflectance in the surface in order to suppress heat absorption.

  As shown in FIG. 3, most of the guard portion G is constituted by a wire rod 13 a disposed in parallel with the short side direction of the opening of the casing 10 (hereinafter, this direction is referred to as the left-right direction). In addition, a wire rod 13b provided in the longitudinal direction of the opening of the casing 10 is provided with a wire rod 13b installed so as to extend from the upper end to the lower end in the longitudinal direction of the opening (hereinafter referred to as the vertical direction). Part of 13a is fixed. A wire rod 13c that forms a substantially rectangular frame extending in the up-down direction is installed at a position in front of the guard portion G facing the heating element 11. One end of the wire 13a extending in the left-right direction is coupled to a position intersecting with the wire 13c forming the substantially rectangular frame, and a region A (blocking suppression portion, hereinafter referred to as a blocking suppression portion A) in the rectangular frame. The guard part G is configured so that the wire 13a is not disposed on the wire 13a. Therefore, there is nothing in the blocking suppression part A that blocks the passage of heat radiated from the heating element 11.

  In FIG. 5, as shown in an enlarged view of the vicinity of the blocking suppression unit A in FIG. 3, the blocking suppression unit A is in a peripheral region B (a region indicated by hatching in the drawing) surrounding the blocking suppression unit A. It is formed to be smaller than the density of the blocking area. The density of the blocking area refers to the ratio of the area where heat from the heating element is blocked by a guard component such as the wire 13 in a predetermined region. That is, in FIG. 5, the ratio of the area occupied by the wire 13 in the portion located in the blocking suppression part A to the area occupied by the blocking suppression part A (in this embodiment, since the wire 13 does not exist in the blocking suppression part A, 0 However, it is formed to be smaller than the ratio of the area occupied by the portion of the wire 13 located in the region B to the area occupied by the region B. By forming the blocking suppression portion A in this manner, the heat radiated from the heating element 11 is more easily passed in the blocking suppression portion A than in the surrounding area.

  Further, as shown in FIG. 4, the blocking suppression part A is formed at a position closest to the heating element 11 in the guard part G, and heat radiated from the heating element 11 is reflected by the reflector 12. The heating element 11 is formed at a position where it is projected in parallel toward the direction (reflection direction).

  In addition, the blocking suppression unit A projects the heating element 11 toward the guard unit G in parallel toward the direction in which the heat radiated from the heating element 11 is reflected by the reflecting plate 12 and the length of the parallel projection image. The guard portion G is formed at a substantially central portion in the vertical direction so as to include the central portion in the direction.

  In addition, the space | interval (it shows by t1 in FIG. 3) of the adjacent wire 13a, and the opening width (it shows by t2 in FIG. 3) of the transversal direction of the wire 13c are comprised at least 12 mm or less. Thereby, it is possible to reliably prevent a finger or the like from contacting the heating element 11 through the gap of the guard portion G.

  Thus, the electric stove 1 occupies a part of the region A (see FIG. 5) in the guard portion G, and the density of the blocking area of the wire 13 that blocks the passage of heat radiated from the heating element 11 is within this region. It has the blocking suppression part A formed so as to be smaller than the blocking area density in the surrounding area B (see FIG. 5). And the said interruption | blocking suppression part A is formed along the heat generating body 11 so that the front of the heat generating body 11 in the said guard part G may be opposed.

  In this electric stove 1, the blocking suppression portion A is formed at a portion of the guard portion G positioned in front of the heating element 11. Therefore, in the range where the blocking suppression portion A is formed, the heating stove 11 is moved forward. It is possible to suppress the heat radiated from being obstructed by the wire 13. As a result, heat can be efficiently transferred in the direction of passing through the blocking suppression portion A starting from the position of the heating element 11.

  Accordingly, the wires 13 are arranged at intervals at which fingers or the like cannot enter to prevent the user's fingers or the like from coming into contact with the heating element, and the strength of the guard portion G is ensured at a position other than the blocking suppression portion A. It is possible to efficiently transfer heat to a heating object located in front of the electric stove 1 while maintaining a predetermined strength so that the wire 13 is not easily deformed by an external impact by arranging the wire 13 on In addition, a predetermined amount of heat can be made to reach the heating target located farther away. In addition, even if the position of the portion facing the front of the heating element is not the position closest to the heating element, the guard part is positioned along the heating element at a position facing the front of the heating element. As described above, efficient heat transfer is possible toward the front as long as it has a shape blocking suppression portion, and the effect of reaching a predetermined amount of heat farther can be exhibited. .

  In this embodiment, since the blocking suppression part A is formed at a position closest to the heating element 11 in the guard part G, the blocking suppression part A out of the heat radiated from the heating element 11 toward the surroundings. The rate of heat radiated to the outside after passing through is increased. In the range where the blocking suppression part A is formed, the heat radiated from the heating element 11 is suppressed from being blocked by the wire 13, so that the radiant heat from the heating element 11 can be more efficiently transmitted to the outside. Is possible.

  Further, the heating element 11 is formed as a rod-shaped member extending in one direction, and the blocking suppression portion A is formed by one gap extending in parallel with the longitudinal direction of the heating element 11. In this case, since the heating element 11 has a simple and general shape, it can be manufactured at low cost. Similarly, the shape of the blocking suppression portion A can be made simple according to the shape of the heating element 11 and can be easily formed.

  And since the interruption | blocking suppression part A is formed by one space | gap, the heat radiated | emitted from the heat generating body 11 is not interrupted within the whole range in which the interruption | blocking suppression part A is formed, and the heat generating body 11 more efficiently. It becomes possible to transmit the radiant heat from the outside. In particular, since the heating element 11 is formed so as to open at a position facing the central portion in the longitudinal direction, which is a higher temperature portion, it is possible to release heat to the outside more efficiently.

  Moreover, since the interruption | blocking suppression part A is extended in parallel with the heat generating body 11, it occupies a wider range in the front of the heat generating body 11 without making the range which forms the interruption | blocking suppression part A too large in the left-right direction. Is possible. Accordingly, it is possible to efficiently radiate heat forward from the heating element 11 without excessively reducing the guard function for preventing the entry of a finger or the like by the guard portion G.

  In addition, from the viewpoint of improving thermal radiation efficiency, it is desirable that the blocking suppression portion A is formed as a gap extending in the vertical direction with a length of 1/3 or more of the length of the heating element 11, and suppressing the decrease in the guard function. From this point of view, it is desirable that the length of the heating element 11 is 2/3 or less.

  Moreover, the guard constituent member is composed of a plurality of wires 13, and the blocking suppression portion A is formed so as to reduce the number of wires 13 that pass therethrough. That is, the blocking suppression unit A is configured to suppress blocking of heat from the heating element 11 by reducing the arrangement density of the wires 13 compared to the surroundings. Therefore, without performing complicated processing on the wire to be used, it is possible to easily suppress the interruption by adjusting the length of the wire 13a so that the wire 13a extending left and right does not pass through the position facing the front of the heating element 11. It becomes possible to form the guard part G provided with the part A.

Next, a modification of the electric heater according to the present embodiment will be described.
The first to seventh modified examples described below are obtained by changing only the shape of the guard part G in the electric stove 1 according to the embodiment shown in FIGS. It is the same shape. 6 to 9, 12, 14, and 15 are front views of the heater main body in the modified examples. The same members as those in the embodiment shown in FIG. 1 to FIG.

(First modification)
The guard part of the electric heater according to the first modification will be described with reference to FIG.
As shown in FIG. 6, the guard part G1 according to the first modification divides the wire 13c forming a substantially rectangular frame extending in one direction vertically into the opening region in the rectangular frame. Thus, the wire 13d extending in the short direction of the rectangular frame is joined. With this wire 13d, it is possible to prevent the opening region surrounded by the wire 13c from spreading in the short direction of the opening region, and it is possible to more reliably prevent the entry of a finger or the like.

  Here, since the wire 13d extending left and right is arranged in the region A1 (blocking suppression portion A1) surrounded by the wire 13c in the guard portion G1, the density of the blocking area in the region A1 surrounded by the wire 13c is Although it increases from the embodiment shown in FIG. 3 by the blocking area of the wire 13d, it is smaller than the density of the blocking area in the area around the area A1. Therefore, it is possible to suppress the passage of heat in the region A1 surrounded by the wire 13c as compared with the surrounding region. In addition, it is desirable that the density of the blocking area in the blocking suppression unit A1 is not more than ½ of the density of the blocking area in the surrounding area.

  In this manner, even when the gaps extending in parallel with the longitudinal direction of the heating element 11 are arranged in series in the longitudinal direction, the blocking suppression portion A1 occupying a certain area along the heating element 11 is formed. Good. In this case, the blocking suppression part A1 can be formed so as to occupy a wider range along the heating element 11 while shortening the length of one gap, and the guard positioned between adjacent gaps in the blocking suppression part A1. The guard function can be improved by the constituent member (wire rod 13d).

(Second modification)
The guard part of the electric heater according to the second modification will be described with reference to FIG.
As shown in FIG. 7, the guard part G2 according to the second modification is arranged so that the wire does not cross the front of the heating element 11 except for the wire 13e extending in the left-right direction in the vicinity of the upper end and the lower end. Note that the wire 13e in the vicinity of the upper end and the lower end enables the wire forming the guard portion G2 to be integrally coupled, and thereby the guard portion G2 can be formed easily from the casing 10.

  A wire 13f formed by bending in a U-shape is disposed in the vicinity of the end in the left-right direction of the casing 10, and at the end of the U-shape, positioned at the end in the left-right direction of the casing 10 in the up-down direction. It is fixed to the extending wire 13b. Moreover, the wire 13g which forms the rectangular frame extended in the left-right direction located in the left-right direction center part is couple | bonded with the other wire rod adjacent in an up-down direction via the two wire materials 13h extended in an up-down direction. . Note that the wire rods 13f and 13g are arranged so that the gap t3 between the wire rods shown in FIG. 7 is at least 12 mm or less.

  Thus, it is also possible to form the guard part G2 including the region A2 (blocking suppression unit) that does not block the front of the heating element 11 using a wire 13f that can be formed by bending or the like. In this case, since a wire that extends continuously in the vertical direction is not used, the area where heat is blocked by the guard component can be further reduced.

(Third Modification)
The guard part of the electric heater according to the third modification will be described with reference to FIG.
As shown in FIG. 8, the guard part G3 according to the third modified example includes a wire rod 13f disposed near the end in the left-right direction and a wire rod disposed in the center in the guard portion G2 illustrated in the second modified example. 13g is connected via a single wire 13i extending in the left-right direction.

  Thereby, it is possible to prevent the gap between the wire rod 13f located at the left and right end portions and the wire rod 13g at the central portion from being widened, and it is possible to increase the strength of the guard portion G3. Compared to the case where the wire rods 13e extending continuously from the left end to the right end of the opening of the casing 10 are arranged uniformly at a predetermined interval (interval arranged in FIG. 8) in the vertical direction, the front side of the heating element 11 is compared. It is possible to reduce the number of wires arranged so as to cross the wire. Therefore, it is possible to reduce the amount by which the heat radiated forward from the heating element 11 is blocked in the region A3 (blocking suppression portion) where the wire i is disposed.

(Fourth modification)
The guard part of the electric heater according to the fourth modification will be described with reference to FIG.
As shown in FIG. 9, the guard part G4 according to the fourth modification includes a plurality of wires 13j that continuously extend from the left end to the right end of the opening of the casing 10. The said wire 13j is arrange | positioned at fixed intervals in the up-down direction. As for the wire 13j, in the part which crosses the front position vicinity part of the heat generating body 11, the interruption | blocking area per unit length which interrupts | blocks the heat radiated | emitted from the heat generating body 11 becomes small compared with the part which continues before and after that. Is formed. That is, the portion of the wire 13j that crosses the vicinity of the front position of the heating element 11 is projected in parallel on a virtual plane orthogonal to the direction in which the heat radiated from the heating element 11 is reflected by the reflecting plate 12 (see FIG. 4). The guard part G4 is formed by partially deforming the wire 13j so that the area of the projected image becomes small.

  Specifically, as shown in FIG. 10, the wire 13 j can be partially crushed to have a flat cross-sectional shape. FIG. 10A is an enlarged view of a portion of the wire 13j indicated by a dotted line C in the front view of FIG. FIG.10 (b) is a top view of the wire 13j shown to Fig.10 (a), FIG.10 (c) is a perspective view of the wire shown to Fig.10 (a).

  As shown in FIGS. 9 and 10, the wire 13j has a direction from the flat portion toward the closest portion of the heating element 11, and a crushed surface S (see FIG. 10C). Are installed in the casing 10 so as to be substantially parallel to each other. That is, a portion that crosses the front position of the heating element 11 in the guard portion G4 is formed by the wire 13j having a flat cross section that is crushed in a direction perpendicular to the direction toward the closest part of the heating element 11 from the flat shape portion. Has been. In this case, since the region A4 (blocking suppression portion) through which heat radiated forward from the heating element 11 easily passes can be easily formed by partially crushing the wire 13j, the manufacturing cost can be reduced. Further, since the wire 13j can be disposed so as to cross the front of the heating element 11, it is possible to fix the wire 13j occupying substantially the entire area of the guard portion G4 to the casing 10 while supporting both ends thereof. Thus, the guard function by the guard part G4 can be further enhanced with a simple configuration.

  Moreover, the part which crosses the heat generating body in a guard part can also be formed with the wire 13k formed partially thinly, for example, as shown in FIG. In this case, the wire 13k has a symmetrical shape with respect to the central axis Y, and the blocking area does not change by rotating around the central axis Y. Therefore, it is not necessary to consider the installation angle (rotation angle around the central axis Y) of the wire 13k during manufacturing, and a simple manufacturing process can be achieved. In addition, even when the installation angle of the wire 13k is changed due to an impact from the outside during use, it is less affected by the blocking area and stably suppresses the blocking of heat from the heating element. Is possible.

(5th modification)
The guard part of the electric heater according to the fifth modification will be described with reference to FIG.
FIG. 13A is an enlarged view of the two wire rods 13n and 13p in the portion indicated by the dotted line D in FIG. FIG.13 (b) is the figure which looked at the wire 13n and 13p shown to Fig.13 (a) from upper direction (direction parallel to the longitudinal direction of a heat generating body).
As shown in FIGS. 12 and 13, the guard part G <b> 5 according to the fifth modified example includes a plurality of two types of wire rods 13 n and 13 p that continuously extend from the left end to the right end of the opening of the casing 10. And as shown in FIG. 13, the one wire 13n is bent and formed so that it may wrap around the back surface side (side approaching the heat generating body 11) of the other wire 13p arrange | positioned adjacently under the said wire 13n. When the wire 13n and the wire 13p are viewed forward from the heating element 11, a portion α formed by bending in the wire 13n is formed so as to overlap the wire 13p. Thereby, in the guard part G5, the area | region A5 (blocking suppression part) where the interruption | blocking area which interrupts | blocks the heat radiated | emitted from the heat generating body 11 toward the front can be formed compared with the circumference | surroundings.

  In this way, the wire 13n, 13p that continues from the left and right end portions to the end portion is used, and the blocking area that blocks the heat radiated forward from the heating element 11 only by bending the one wire 13n. Can be reduced. In this case, the number of joints between the wires can be reduced, and the wire can be easily processed. Therefore, the guard portion G5 can be more easily manufactured.

(Sixth Modification)
The guard part of the electric heater according to the sixth modification will be described with reference to FIG.
As shown in FIG. 14, the guard part G <b> 6 according to the sixth modification is configured by a metal net 14 (net-like body) such as a metal lath that covers the entire opening of the casing 10. In addition, you may form similarly using a wire lath. The metal net 14 is provided with an opening 14 a (blocking suppression portion) formed in a long hole shape extending in parallel with the longitudinal direction of the heating element 11. The opening 14 a is formed at a position facing the front of the central portion in the longitudinal direction of the heating element 11. In addition, in order to ensure the intensity | strength of the guard part in the vicinity of the opening part 14a, the guard part G6 shown in FIG. 14 is provided with the member 14b which forms the outline of the opening part 14a, However, The said member 14b is not used. Alternatively, a part of the metal net 14 may be cut to form the opening 14a.

  In this way, by forming the opening 14a in a part of the metal net 14, it is possible to form a region through which heat radiated from the heating element 11 easily passes. In this case, since the guard part G6 can be integrally formed with a single metal net, the number of parts when the guard part G6 is manufactured can be reduced and can be easily manufactured.

(Seventh Modification)
The guard part of the electric heater according to the seventh modification will be described with reference to FIG.
As shown in FIG. 15, the guard part G <b> 7 according to the seventh modification is configured by a metal net 15 (net-like body) such as a metal lath that covers the entire opening of the casing 10. In addition, you may form similarly using a wire lath. The metal net 15 is formed with two types of net parts 15a and net parts 15b having different mesh sizes. And the net | network part 15a with a large opening is arrange | positioned in the position facing the front of the heat generating body 11, and the net | network part 15b with a small opening compared with the net | network part 15a is arrange | positioned adjacent to the right and left of the said net | network part 15a. ing. Thereby, in the area | region A7 (interruption suppression part) in which the net | network part 15a in the guard part G7 is arrange | positioned, it can make it easy to pass the heat | fever of the heat generating body 11. FIG.

  Thus, the guard part G7 is configured, and the region A7 in which heat radiated from the heating element 11 is hard to be blocked is formed in a predetermined partial region, so that the heat radiated forward of the heating element 11 is protected from the guard part G7. , It is possible to efficiently transmit heat to the heating object located in the front, and a predetermined amount of heat can be passed farther. Further, by using the metal net 15, the guard part G7 can be formed with a small number of parts.

  As mentioned above, although embodiment of this invention and its modification were demonstrated, this invention is not restricted to the above-mentioned embodiment, As long as it described in the claim, it can implement variously changed and implemented. It can be done.

(1) In the present embodiment, the case where the number of heating elements is two has been described. However, even when the number of heating elements is one, the guard portion can be similarly configured and implemented. For example, as shown in FIG. 16, the blocking suppression part A8 can be formed in the guard part G8 by the wire 13a and the wire 13b in the same manner as the embodiment shown in FIG. It is also possible to configure an electric stove by installing three or more heating elements.

(2) Not only when the heating element is formed in a rod shape, but also when the heating element 21 is formed in a U-shape, for example, as shown in FIG. By forming the guard part G9 so as to have the blocking suppression part A9, heat radiated to the front of the heating element 21 can easily pass through the guard part G9, and heat can be efficiently applied to the heating target located in front. It is possible to transmit a predetermined amount of heat farther away.

It is the perspective view seen from the front side of the electric heater which concerns on embodiment of this invention. It is the perspective view seen from the back side of the electric heater shown in FIG. It is a front view of the electric heater shown in FIG. FIG. 4 is a cross-sectional view taken along the line XX in FIG. 3. It is the elements on larger scale of the guard part in FIG. It is a front view showing the 1st modification of an electric stove concerning an embodiment. It is a front view which shows the 2nd modification of the electric stove which concerns on embodiment. It is a front view which shows the 3rd modification of the electric heater which concerns on embodiment. It is a front view which shows the 4th modification of the electric heater which concerns on embodiment. It is the elements on larger scale of the guard structural member in FIG. It is a figure which shows the modification of the guard structural member in FIG. It is a front view which shows the 5th modification of the electric heater which concerns on embodiment. It is the elements on larger scale of the guard structural member in FIG. It is a front view showing the 6th modification of an electric stove concerning an embodiment. It is a front view which shows the 7th modification of the electric heater which concerns on embodiment. It is a front view which shows the other modification of the electric stove which concerns on embodiment. It is a front view which shows the other modification of the electric stove which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric stove 2 Stand base 3 Support | pillar 4 Heater main body 10 Casing 11, 21 Heating body 12 Reflecting plate 13 Wire (Linear body)
14, 15 Metal mesh (mesh)
G Guard part A Blocking suppression part

Claims (9)

The heating element includes a heating element (11), a reflector (12) that is installed behind the heating element and reflects heat radiated from the heating element to the front, and a guard component member made of a linear or net-like body. Guard part (G) installed so as to cover the front of
The guard portion occupies a partial area in the guard portion, and the density of the shielding area of the guard constituent member that blocks the passage of heat radiated from the heating element is blocked in an area near the periphery surrounding the area. Having a blocking suppression part (A) formed to be smaller than the density of the area;
The electric heating stove (1), wherein the blocking suppression part is formed along the heating element so as to face the front of the heating element in the guard part.   The electric heater (1) according to claim 1, wherein the blocking suppression part (A) is formed at a position closest to the heating element (11) in the guard part (G). The heating element (11) is formed as a rod-shaped member extending in one direction,
3. The electric heater (1) according to claim 1, wherein the blocking suppression part (A) is formed by one gap extending in parallel with the longitudinal direction of the heating element. The heating element (11) is formed as a rod-shaped member extending in one direction,
The electricity according to claim 1 or 2, wherein the blocking suppression part (A1) is formed with a plurality of gaps extending in parallel with the longitudinal direction of the heating element and arranged in series in the direction. Stove (1). The guard component is composed of a plurality of linear bodies (13),
The said blocking | interruption suppression part (A) is formed by making arrangement | positioning density of the said linear body small compared with the circumference | surroundings of the said blocking | interruption suppression part, The at least any one of Claims 1-4 characterized by the above-mentioned. The electric heater (1) described in 1. The guard component is composed of a plurality of linear bodies (13),
The blocking suppression part (A4) has a smaller blocking area per unit length for blocking heat radiated from the heating element (11) than the linear body around the blocking suppression part. Electric stove (1) according to at least one of claims 1 to 4, characterized in that it is formed by a body.   The said interruption | blocking suppression part (A4) is formed of the said linear body (13j) of the cross-sectional flat shape crushed in the direction perpendicular | vertical to the direction which goes to the said interruption | blocking suppression part from the said heat generating body. Item 7. The electric heater (1) according to item 6.   The electric heater (A) according to claim 6, wherein the blocking suppression part (A4) is formed by the linear body (13k) which is thinner than the linear body around the blocking suppression part. 1). The guard component is formed by a mesh body (15),
5. The at least one of claims 1 to 4, wherein the blocking suppression portion (A 7) is formed by increasing the mesh opening of the mesh body as compared to the periphery of the blocking suppression portion. Electric stove (1) according to item.

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