JP2014119239A - Gas stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas stove capable of suppressing the temperature elevation of side wall parts at the time of usage of the stove.SOLUTION: A gas stove 1 includes: a stove body 2; a combustion gas burner 4 provided in a combustion chamber 3 in the stove body 2; a trivet 5 provided around an upper end opening 32 of the combustion chamber 3; a substantially cylindrical-shaped air flow passage cylinder part 7 provided at a rear end part of the stove body 2, communicated with the inside of the stove body 2 and for exhausting air C flowing in from the inside of the stove body 2 by guiding it upward; and a pair of side wall parts 8 protruding upward from both side edges of a top plate part 24 which the stove body 2 has. The inside of the side wall part 8 is made to be hollow. At a lower end part of the side wall part 8, an air suction port 82 is provided for communicating the inside of the stove body 2 and the inside of the side wall part 8. At a rear end part of the side wall part 8, an air exhaust port 83 is provided for communicating the inside of the side wall part 8 and the inside of the air flow passage cylinder part 7.

Description

  The present invention relates to a gas stove.

  2. Description of the Related Art Conventionally, a gas stove that burns a combustion gas such as city gas and uses it as a heat source for cooking is known.

  For example, Patent Document 1 discloses a gas stove having a stove body, a combustion gas burner provided in the stove body, five virtues provided around the combustion gas burner, and an exhaust pipe provided on the back side of the stove body. Is disclosed.

  The present applicant has developed a gas stove having a pair of side walls protruding upward from both side edges of the top plate portion of the stove body, and has already filed a patent application.

JP 2006-46884 A

  The gas stove having the side wall described above has room for improvement in the following points. That is, the gas stove is provided with a side wall portion so as to cover the size pan placed on Gotoku. Therefore, there exists a problem that a side wall part is heated by the exhaust gas etc. which flow behind the heated pan and the pan, and the temperature of a side wall becomes high.

  The present invention has been made in view of the above-mentioned background, and has been obtained in an attempt to provide a gas stove that can suppress the temperature rise of the side wall when using the stove.

One aspect of the present invention includes a stove body, a combustion gas burner provided in a combustion chamber in the stove body, five virtues provided around an upper end opening of the combustion chamber, and a rear end portion of the stove body. From the both side edges of the substantially cylindrical air flow path cylinder portion that communicates with the inside of the stove body, guides and discharges the air flowing from the inside of the stove body upward, and the top plate portion of the stove body. A gas stove having a pair of side wall portions protruding upward,
The inside of the side wall is hollow,
The lower end portion of the side wall portion is provided with an air suction port for communicating the inside of the stove body and the inside of the side wall portion, and sucking air from the inside of the stove body into the side wall portion,
The rear end portion of the side wall portion is provided with an air discharge port for communicating the inside of the side wall portion and the inside of the air flow channel cylinder portion and discharging the air flowing through the side wall portion into the air flow channel cylinder portion. It is in the gas stove characterized by the above-mentioned (Claim 1).

  The gas stove has the above-described configuration. Particularly, in the gas stove, the inside of the side wall is hollow. The lower end of the side wall is provided with an air suction port for communicating the inside of the stove body and the inside of the side wall and sucking air from the inside of the stove body into the side wall. The rear end portion of the side wall portion is provided with an air discharge port for communicating the inside of the side wall portion and the inside of the air flow path cylinder portion and discharging the air flowing in the side wall portion into the air flow path cylinder portion.

  Therefore, in the gas stove, air is sucked from the stove body into the side wall through the air suction port. The air sucked into the side wall portion cools the side wall portion while flowing through the side wall portion, and is then discharged from the air discharge port into the air flow path cylinder portion. Therefore, the gas stove can suppress the temperature rise of the side wall portion when using the stove by cooling with the air.

It is a perspective view of the gas stove of Example 1. FIG. 2 is a schematic II-II cross-sectional view of the gas stove of Example 1. FIG. It is the enlarged view which expanded and showed the five virtue of the gas stove of Example 1. FIG. It is IV-IV sectional drawing of the five virtue of the gas stove of Example 1. FIG. It is VV sectional drawing of the five virtue of the gas stove of Example 1. FIG. It is VI-VI sectional drawing of the five virtue of the gas stove of Example 1. FIG. 1 is a plan view of a gas stove according to Embodiment 1. FIG. It is a perspective view of the side wall part (right side) in the gas stove of Example 1. FIG. It is IX-IX sectional drawing of the side wall part (right side) in the gas stove of Example 1. FIG. It is XX sectional drawing of the side wall part (right side) in the gas stove of Example 1. FIG. It is XI-XI sectional drawing of the side wall part (right side) in the gas stove of Example 1. FIG. It is explanatory drawing which removed the rear surface of the air flow path cylinder part in the gas stove of Example 1, and showed typically.

  In the gas stove, the front side of the gas stove in the depth direction of the gas stove is the front, and the back side of the gas stove is the back. The installation surface side such as the floor where the gas stove is installed is set downward, and the opposite direction is set upward. The five virtue sides of the gas stove are the inside and the opposite direction is the outside. The left and right sides of the gas stove are based on the gas stove viewed from the front.

  The gas stove may be provided with a partition plate that divides an air flow path from the air suction port to the air discharge port into two of a first flow path and a second flow path inside the side wall portion ( Claim 2).

  In this case, the air taken into the side wall from the air suction port flows through the first flow path and the second flow path partitioned by the partition plate. Therefore, in this case, air hardly stays in the side wall portion as compared with the case where there is no partition plate. Therefore, in this case, the cooling of the side wall portion can be promoted, and the temperature rise of the side wall portion can be further suppressed.

  In the gas stove, the air suction port may be provided near the front end portion of the lower end portion of the side wall portion, and the air discharge port may be provided near the upper end portion of the rear end portion of the side wall portion. .

  In this case, air is taken into the side wall portion from the air suction port arranged in front of the air flow channel cylinder portion, and the taken-in air is sufficiently recirculated toward the rear in the side wall portion. It is discharged from an air outlet that is far away. Therefore, in this case, it is easy to sufficiently cool the side wall portion, which is advantageous in suppressing the temperature rise of the side wall portion.

  In the gas stove, the air suction port has a first air suction port and a second air suction port separated by a partition plate, and the air discharge port is a first air discharge port and a second air separated by the partition plate. It is good to have an outlet. The first flow path has one end communicating with the first air suction port and the other end communicating with the first air discharge port, and at least a side wall between the first air suction port and the first air discharge port. The second flow path has one end communicating with the second air suction port and the other end communicating with the second air discharge port. It is good to arrange | position below one flow path (Claim 4).

  In this case, since the air taken in from the first air suction port flows through the first flow path along the front end portion and the upper end portion of the side wall portion, cooling of the front end portion and the upper end portion of the side wall portion is ensured. be able to. Moreover, since the air taken in from the second air suction port flows through the second flow path disposed below the first flow path, the cooling of both side surface portions of the side wall portion can be ensured. .

  In the gas stove, the second flow path may have a second partition plate for dividing the air sucked from the second air suction port into two parts, the inner side and the outer side (Claim 5).

  In this case, since the second partition plate functions as a shielding plate that shields heat, there is an advantage that the side surface portion outside the side wall portion can be easily cooled. In this case, since the flow velocity of air in the second flow path can be increased, air can be easily sucked from the second air suction port, and the side surface portion constituting a part of the second flow path can be efficiently formed. It is advantageous for cooling.

  In the gas stove, the air that is divided into two by the second partition plate and flows in the second flow path joins on the rear end side in the second flow path, and is discharged from the second air discharge port. It is good to be comprised (Claim 6).

  In this case, since the air that has flowed through the second flow path can be discharged from one second air discharge port, the air discharge structure can be relatively simplified.

  In the gas stove, the first flow path may include a first partition plate for dividing the air sucked from the first air suction port into two parts, an inner side and an outer side (Claim 7).

  In this case, since the flow velocity of air in the first flow path can be increased, air is easily sucked from the first air suction port, and the side surface portion constituting a part of the first flow path is efficiently cooled. Is advantageous.

  In the gas stove, an internal duct having one end communicating with the air flow path cylinder and the other end connected to the air discharge port may be provided in the air flow path cylinder.

  In this case, the air in the side wall can be efficiently discharged into the air channel cylinder through the internal duct due to the draft effect of the air flowing from the lower side to the upper side in the air channel cylinder. Moreover, since the air in the side wall portion is efficiently discharged into the air flow path tube portion, the suction of air from the air suction port is promoted. Therefore, in this case, a gas stove excellent in the cooling effect of the side wall portion is obtained. As a method for connecting the other end of the internal duct to the air discharge port, for example, a method of inserting the other end of the internal duct into the air discharge port is simple.

  At this time, the one end opening of the internal duct is preferably arranged facing upward in the air flow path cylinder (claim 9).

  In this case, the draft effect in the air flow path cylinder portion acts effectively, and the suction of air from the air suction port is further promoted. Therefore, in this case, there is an advantage that a gas stove excellent in the cooling effect of the side wall portion can be easily obtained.

  The gas stove is configured so that the exhaust gas from the combustion chamber flows out mainly from the rear when the small pot as the object to be heated is placed. It is preferable to have a recess recessed inward of the side wall.

  In this case, when the large pan is placed on Gotoku, the exhaust gas from the combustion chamber flows out mainly from the rear, and the trunk peripheral surface on the rear side of the large pan by heat transfer from the rising exhaust gas Can be heated. Furthermore, in this case, due to the draft effect of the exhaust gas, air can flow from the front through the recess of the side wall portion to the rear of the pan, and the flow rate of the exhaust gas rising from the combustion chamber can be increased. Therefore, in this case, by increasing the flow rate of the exhaust gas, it is possible to efficiently heat the circumferential surface of the body portion on the rear side of the short-sized pan, and a gas stove with high thermal efficiency is obtained.

Example 1
The gas stove of Example 1 will be described with reference to FIGS. As shown in FIGS. 1 to 12, the gas stove 1 of this example includes a stove body 2, a combustion gas burner 4 provided in a combustion chamber 3 in the stove body 2, and a periphery of an upper end opening 32 of the combustion chamber 3. The five virtues 5 provided on the stove body 2, the air flow path cylinder part 7 provided at the rear end of the stove body 2, and a pair of side wall parts 8 projecting upward from both side edges of the top plate part 24 of the stove body 2 have. Hereinafter, each component will be described in detail.

  The stove body 2 has a front plate portion 21, side plate portions 22 on both sides, a rear plate portion 23, and a top plate portion 24, and each plate portion 21, 22, 23, 24 is rectangular by welding or the like. It is configured to be joined in a box shape. In this example, the stove main body 2 shows an example that does not have a bottom plate portion. Each of the plate portions 21, 22, 23, 24 is formed of a metal material such as SUS (for example, SUS430). A substantially circular opening 241 is formed at a substantially central portion of the top plate portion 24, and the combustion chamber 3 is disposed in alignment with the opening 241. Legs 25 project from the lower ends of the front plate portion 21, the side plate portion 22, and the rear plate portion 23, and the front plate portion 21, the side plate portions 22 on both sides, with a slight gap above the floor. A lower end portion of the rear plate portion 23 is disposed. In this example, the stove body 2 is formed to have a width of 650 mm, a depth of 750 mm, a height of the leg portion 25 of 130 mm, and a height of 420 mm up to the surface of the top plate portion 24.

  On the lower surface of the stove main body 2, a pipe connection portion 26 to which a downstream end portion of a gas supply pipe (not shown) made of a metal pipe or the like is connected is provided. Combustion gas such as city gas is supplied to the pipe connection portion 26 through a gas supply pipe. A gas pipe 27 extends from the pipe connection portion 26 toward the inside of the stove body 2, and a gas nozzle 28 is provided at an end thereof. A gas cock 29 is interposed between the pipe connection portion 26 and the gas nozzle 28. When the gas cock 29 is opened, the combustion gas from the pipe connection portion 26 is supplied to the combustion gas burner 4. On the other hand, when the gas cock 29 is closed, the supply of the combustion gas from the pipe connecting portion 26 is shut off. The front plate portion 21 of the stove body 2 is provided with an operation portion 211 in which operation knobs and switches for opening and closing the gas cock 29 are arranged.

  In the combustion chamber 3, the interior surrounded by the side wall 31 is a combustion space. In this example, the side wall 31 is made of a metal material such as SUS (for example, SUS430) having a substantially cylindrical shape. The combustion chamber 3 has an upper end opened to form an upper end opening 32 and a lower end opened to form a lower end opening 33. In the combustion chamber 3, the combustion space in the combustion chamber 3 and the space in the stove main body 2 communicate with each other through the lower end opening 33. Thereby, secondary air flows when the combustion gas burner 4 burns into the combustion chamber 3 from the lower end opening 33. The intake of air into the stove main body 2 is performed from the bottom 212 of the stove main body 2 or the gallery 212 formed on the front plate portion 21 of the stove main body 2 (see arrow A in FIG. 2).

  The combustion gas burner 4 is disposed in the combustion chamber 3, and has a burner body 41, a mixing tube 42, and a seed fire burner (not shown). The burner body 41 has a substantially circular shape, and a large number of flame holes are arranged in the circumferential direction on the upper surface thereof. The mixing tube 42 has a gas receiving port 421 into which the gas nozzle 28 is inserted at one end, and the other end is connected to the lower part of the burner body 41. The seed fire burner is for igniting a mixed gas ejected from a flame hole provided in the burner body 41. The seed fire burner is disposed in the vicinity of the burner body 41 and is connected to the gas cock 29 via a seed fire gas pipe (not shown).

  Gotoku 5 is a portion on which a small pan P as a heated object is placed. The virtues 5 have a configuration that allows the exhaust gas from the combustion chamber 3 to flow out mainly from the rear when the small pan P is placed. In this example, specifically, the five virtues 5 configured as described below are used so that the exhaust gas from the combustion chamber 3 can be surely flowed out from behind.

  That is, the five virtues 5 are a substantially annular base 51 disposed around the upper end opening 32 of the combustion chamber 3, and a plurality of bases 51 arranged at intervals in the circumferential direction of the base 51 and extending inward in the radial direction of the base 51. Claw part 52 (in this example, specifically, seven claw parts 52). The base 51 includes a substantially annular plate-like portion 511 and a protruding portion 512 that protrudes downward from the inner peripheral portion of the plate-like portion 511. The outer diameter of the plate-like portion 511 is 500 mm, the inner diameter of the plate-like portion 511 is about 390 mm, the thickness of the plate-like portion 511 is 8 mm, and the protruding length of the protruding portion 512 is 34 mm. The projecting portion 512 is a portion for fitting into the upper end opening 32 of the combustion chamber 3 or the opening 241 of the top plate portion 24, and thereby the position shift of the virtues 5 along the top plate portion 24 of the stove body 2. Is prevented. Further, each of the plurality of claw portions 52 has a substantially rectangular parallelepiped outer shape, and the upper surface thereof is set as a mounting surface on which the bottom portion of the shell pan P is mounted. Each claw part 52 is arranged so that the longitudinal direction thereof is the radial direction of the base part 51, and from the middle of the longitudinal direction of each claw part 52 to the tip part, it is arranged inside the inner diameter of the base part 51. Yes. The size of each claw 52 is about 115 mm in the longitudinal direction, about 30 mm in the short direction, and 28 mm in height from the base.

  The plurality of claw parts 52 include a pair of front claw parts 521 arranged on the front side of the base part 51, at least one rear claw part 522 arranged on the rear side of the base part 51, and a pair of front claw parts. A pair of intermediate claw portions 523 disposed between 521 and the rear claw portion 522 is provided.

  In this example, specifically, the pair of front claws 521 are disposed at positions that are line-symmetric with respect to the center line Lm in the front-rear direction of the base 51 as the axis of symmetry. The angle formed between the axis 51 in the radial direction of the base 51 of the one front claw 521 and the axis L2 in the radial direction of the base 51 of the other front claw 521 is set to about 63 °.

  Further, the rear claw portion 522 is disposed in a region on the rear side of the boundary line M that separates the front half and the rear half of the base portion 51. In this example, the rear claw part 522 has three parts, a rear center claw part 522m arranged on the center line Lm in the front-rear direction of the base 51, a rear right claw part 522r and a rear left claw part 522l arranged on the left and right sides thereof. It is comprised from the nail | claw part. The angle formed between the axis 51 in the radial direction of the base 51 of the rear center claw 522m (in this example, the center line Lm) and the axis L3 in the radial direction of the base 51 of the rear right claw 522r is set to about 50 °. Yes. The angle formed between the axis 51 in the radial direction of the base 51 of the rear center claw 522m (in this example, the center line Lm) and the axis L4 in the radial direction of the base 51 of the rear left claw 522l is set to about 50 °. Yes. That is, the rear right claw portion 522r and the rear left claw portion 522l are arranged at positions that are line-symmetric with respect to the center line Lm in the front-rear direction of the base portion 51 as a symmetry axis. The number of each claw part which comprises the back claw part 522 is not specifically limited, It can change suitably.

  The pair of intermediate claws 523 are arranged at positions that are line-symmetric with respect to the center line Lm in the front-rear direction of the base 51 as the axis of symmetry. Further, the pair of intermediate claw portions 523 are arranged in a region on the front side of the boundary line M that separates the front half and the rear half of the base portion 51. The angle formed between the axis 51 in the radial direction of the base 51 of the one intermediate claw 523 and the axis L1 in the radial direction of the base 51 of the one front claw 521 is set to about 50 °. The angle formed between the axis L6 in the radial direction of the base 51 of the other intermediate claw 523 and the axis L2 in the radial direction of the base 51 of the other front claw 521 is set to about 50 °. Note that the pair of intermediate claw portions 523 can be disposed in a position overlapping the boundary line M or in a region on the rear side of the boundary line M.

  The virtues 5 are provided with a front connection wall portion 53 that extends in the circumferential direction of the base portion 51 and is connected to the base portion 51 and the pair of front claw portions 521 between the pair of front claw portions 521.

  In this example, specifically, the front connection wall portion 53 is configured by a plate-like body (thickness 8 mm) formed in a substantially arc shape along the circumferential direction of the base portion 51, and the base portion 51 is formed at the lower end edge thereof. In addition to being connected, the both side edges are connected to a pair of front claws 521. The upper surface of the front connecting wall portion 53 and the upper surfaces of the pair of front claw portions 521 are aligned with each other so as to be substantially on the same plane. Further, as described above, since the angle between the pair of front claw portions 521 is about 63 °, the front connection wall portion 53 is provided in the circumferential direction of the base portion 51 substantially over the above angle range. In addition, the base 51 of the part which provides the front connection wall part 53 has the extension part 513 extended in the base 51 radial inside. The front connection wall 53 is aligned radially inward with the inner periphery of the first connection wall 541 of the side connection wall 54, which will be described later, in the radial direction inward of the base 51 of the extension 513. Standing on the edge of the.

  The five virtues 5 include a first connecting wall portion 541 extending between the front claw portion 521 and the intermediate claw portion 523 in the circumferential direction of the base 51 and inward in the radial direction of the base 51, and a base portion from the outer periphery of the first connecting wall portion 541. And a pair of side connection wall portions 54 that are connected to the front claw portion 521 and the intermediate claw portion 523. In this example, the side connecting wall portion 54 has a substantially “L” -shaped cross section cut along the radial direction of the base portion 51.

  In this example, specifically, the 1st connection wall part 541 is comprised from the plate-shaped body (thickness 6mm and the length of 24 mm of base 51 radial direction) extended in the base 51 circumferential direction and the base 51 radial direction inward. The both side edges are connected to the front claw portion 521 and the intermediate claw portion 523. Further, the height of the upper surface of the first connecting wall portion 541 and the upper surfaces of the front claw portion 521 and the intermediate claw portion 523 are aligned so as to be substantially on the same plane. Therefore, the first connecting wall portion 541 can be brought into surface contact with the bottom portion of the full-size pan P. The first connecting wall portion 541 is arranged such that the outer peripheral portion thereof is aligned with the inner peripheral portion of the base portion 51 substantially in the vertical direction.

  On the other hand, the second connecting wall portion 542 is configured by a plate-like body (thickness 6 mm) formed in a substantially arc shape along the circumferential direction of the base 51, and the front claw portion 521 and the intermediate claw portion 523 are formed on both side edges. It is connected to. The length of the second connecting wall portion 542 in the vertical direction is set to 2/3 of the distance of 28 mm between the upper end edge of the second connecting wall portion 542 and the base portion 51.

  In Gotoku 5, an opening 55 is formed between the second connecting wall 542 and the base 51. In this example, specifically, the opening 55 is formed between the lower end edge of the second connection wall portion 542 and the edge portion on the radially inner side of the base portion 51. The vertical length of the opening 55 in this example is about 10 mm. The opening 55 is for directly viewing the flame (open flame) of the combustion gas burner 4. The high-temperature exhaust gas generated by the combustion of the combustion gas burner 4 flows radially outward toward the upper side in the side connection wall portion 54, but the high-temperature exhaust gas exists in the presence of the second connection wall portion 542. Is returned to the inside of the combustion chamber 3 again. Therefore, a large amount of exhaust gas does not flow out from the opening 55 to the outside. That is, even when the Gotoku 5 having such a configuration is used, when the small pan P is placed, the exhaust gas from the combustion chamber 3 can flow out mainly from the rear. In addition, the virtues 5 are configured so that the exhaust gas from the combustion chamber 3 does not flow out to the front when the small pan P is placed by having the front connecting wall portion 53.

  The air flow path cylinder portion 7 communicates with the inside of the stove main body 2 and guides the air flowing from the inside of the stove main body 2 upward and discharges it. The air flow path cylinder portion 7 is erected upward from the rear end edge of the top plate portion 24 of the stove body 2. The air flow path cylinder portion 7 is formed in a substantially cylindrical shape from a metal material such as SUS (for example, SUS430). In this example, specifically, the air flow path cylinder portion 7 is formed in a substantially rectangular tube shape. A rectifying plate 71 is attached to the upper end portion of the air flow path cylinder portion 7 so that the air flowing through the air flow path cylinder portion 7 is discharged obliquely upward.

  A pair of side wall part 8 is mutually spaced apart and is arrange | positioned so that it may not contact with the trunk | drum peripheral surface of the full-size pan P. As shown in FIG. As for a pair of side wall part 8, the front-end part is arrange | positioned between the boundary line M which divides the front half and rear half of Gotoku 5, and the front edge part of the stove main body 2 together. In addition, the inside of a pair of side wall part is set as the substantially symmetrical structure.

  The side wall 8 has a hollow inside. In this example, specifically, the side wall portion 8 includes a front end surface portion 811, side surface portions 812 on both sides, an upper end surface portion 813, and an inclined surface portion 814 that obliquely connects the front end surface portion 811 and the upper end surface portion 813. It is configured in a hollow substantially box shape. Each of the surface portions 811, 812, 813, and 814 is made of a metal material such as SUS (for example, SUS430). In this example, the lower end portion of the side wall portion 8 is in contact with the top plate portion 24, and the rear end portion of the side wall portion 8 is in contact with the front surface of the air flow path cylinder portion 7. That is, in this example, a part of the top plate part 24 also serves as the lower end surface part of the side wall part 8, and a part of the front surface of the air flow path cylinder part 7 also serves as the rear end surface part of the side wall part 8. Therefore, the side wall portion 8 is surrounded by the front end surface portion 811, the side surface portions 812 on both sides, the upper end surface portion 813, the inclined surface portion 814, a part of the top plate part 24, and a part of the front surface of the air flow channel cylinder part 7. Has a space. The front end surface portion 811 of the side wall portion 8 is located 200 mm forward from the boundary line M, and the distance between the front end surface portion 811 and the front edge portion of the top plate portion 24 is 160 mm.

  At the lower end portion of the side wall portion 8, an air suction port 82 is provided for communicating the inside of the stove main body 2 and the inside of the side wall portion 8 and sucking air from the inside of the stove main body 2 into the side wall portion 8. In addition, the rear end portion of the side wall portion 8 allows the inside of the side wall portion 8 and the inside of the air flow channel cylinder portion 7 to communicate with each other, and the air flowing through the side wall portion 8 is discharged into the air flow path cylinder portion 8. An air outlet 83 is provided.

  Specifically, the air suction port 82 is formed in the arrangement portion of the side wall portion 8 on both edge sides of the top plate portion 24. That is, in this example, since a part of the top plate portion 24 also serves as the lower end surface portion of the side wall portion 8, the air suction port 82 is formed in the arrangement portion of the side wall portion 8 on both edges of the top plate portion 24. The inside of the stove main body 2 and the inside of the side wall portion 8 are communicated. The air suction port 82 is provided near the front end portion of the lower end portion of the side wall portion 8. On the other hand, the air discharge port 83 is formed in the arrangement portion of the rear end portion of the side wall portion 8 on the front surface of the air flow path tubular portion 7. That is, in this example, since a part of the front surface of the air flow path cylinder portion 7 also serves as the rear end surface portion of the side wall portion 8, the arrangement portion of the rear end portion of the side wall portion 8 on the front surface of the air flow path cylinder portion 7. By forming the air suction port 82 at the same time, the inside of the side wall portion 8 and the inside of the air flow path cylinder portion 7 are communicated. The air discharge port 83 is provided near the upper end of the rear end portion of the side wall portion 8.

  A partition plate 84 is provided inside the side wall portion 8 to partition the air flow path from the air suction port 82 to the air discharge port 83 into two channels, a first flow channel 851 and a second flow channel 852. . The partition plate 84 has at least a first facing surface portion 841 that faces the front end surface portion 811 of the side wall portion 8 and a second facing surface portion 842 that faces the upper end surface portion 813. In this example, since the side wall portion 8 has the inclined surface portion 814, the third opposing surface portion 843 facing the inclined surface portion 814 is further provided between the first opposing surface portion 841 and the second opposing surface portion 842. Is shown.

  Specifically, the air suction port 82 has a first air suction port 821 and a second air suction port 822 separated by a partition plate 84, and the air discharge port 83 is a first air space separated by the partition plate 84. An air outlet 831 and a second air outlet 832 are provided. More specifically, one end of the partition plate 84 is disposed on the air suction port 82 and bisects the air suction port 82. Therefore, in this example, the first air suction port 821 and the second air suction port 822 are approximately the same size. On the other hand, the other end of the partition plate 84 is in contact with the front surface of the air flow path cylinder portion 7 at the rear end portion of the side wall portion 8. A first air discharge port 831 is disposed above the partition plate 84, and a second air discharge port 832 is disposed below the partition plate 84.

  Specifically, the first flow path 851 has one end communicating with the first air suction port 821 and the other end communicating with the first air discharge port 831, and the first air suction port 821 and the first air exhaust port 821 communicate with each other. A space between the outlet 831 is formed along at least the front end surface portion 811 and the upper end surface portion 813 of the side wall portion 8. The first flow path 851 has a first partition plate 861 for flowing the air sucked from the first air suction port 821 into two parts, the inside and the outside. Specifically, the first partition plate 861 is disposed substantially vertically between the upper end surface portion 813 and the second opposing surface portion 842 along the front-rear direction of the side wall portion 8. However, the rear end portion of the first partition plate 861 is not in contact with the front surface of the air flow path cylinder portion 7. Therefore, the air that is divided into two by the first partition plate 861 and flows in the first flow path 851 merges at the rear end side in the first flow path 851 and is discharged from the first air discharge port. It is like that.

  On the other hand, the second flow path 852 has one end communicating with the second air suction port 822 and the other end communicating with the second air discharge port 832, and is disposed below the first flow path 851. The second flow path 852 has a second partition plate 862 for flowing the air sucked from the second air suction port 822 into two parts, the inside and the outside. Specifically, the second partition plate 862 is disposed substantially vertically between the second facing surface portion 842 and the top plate portion 24 along the front-rear direction of the side wall portion 8. However, the front end portion of the second partition plate 862 is not in contact with the first facing surface portion 841 of the partition plate 84, and the rear end portion of the second partition plate 862 is in contact with the front surface of the air flow channel cylinder portion 7. Not touched. Therefore, the air that is divided into two by the second partition plate 862 and flows in the second flow path 852 joins at the rear end side in the second flow path 852 and is discharged from the second air discharge port 832. It has become so.

  Both side wall parts 8 have a recess 81 that is recessed inward of the side wall part 8 in the side part 812 on the side of the virtues 5. In this example, the recess 81 has a pair of inclined surfaces 815 that are inclined toward the deepest part of the recess of the recess 81. The deepest portion of the recess of the recess 81 is disposed at a position that coincides with the boundary line M. The upper end edge of the recessed portion 81 is disposed below the upper end edge of the side wall portion 8, and the lower end edge of the recessed portion 81 is disposed in contact with the upper surface of the top plate portion 24. In the recess 81, the cross-sectional shape of the recess 81 when cut along a plane substantially parallel to the top plate portion 24 is a line-symmetric shape with the boundary line M as the symmetry axis.

  In this example, an internal duct 87 is provided in the air flow path cylinder portion 7. One end of the internal duct 87 communicates with the air flow path cylinder portion 7 and the other end is connected to the air discharge port 83. Specifically, the internal duct 87 is composed of two parts, an upper pipe 871 and a lower pipe 872. The upper pipe 871 is connected in a state where one end communicates with the inside of the air flow path cylinder portion 7 and the other end is inserted into the first air discharge port 831. The lower pipe 872 is connected in a state in which one end communicates with the air flow path cylinder portion 7 and the other end is inserted into the second air discharge port 832. One end of each of the upper pipe 871 and the lower pipe 872 is arranged in the air flow path cylinder portion 7 so as to face upward.

  In addition, the gas stove 1 does not come into contact with the body surface of the body pan P when the body pan P is placed around the back of the body 5 and on the body 5 and the body portion of the body pan P. A rear heat collecting section 9 having a curved surface 91 along the circumferential surface is provided.

  The rear heat collecting section 9 has a curved surface 91 to keep the gap 62 between the cylindrical body P and the circumferential surface of the cylindrical section P constant, and promotes heating of the rear side of the cylindrical pot P by heat transfer from the exhaust gas. There is a role. Specifically, the rear heat collecting unit 9 includes a curved plate portion 911 formed with a curved surface 91, an upper plate portion 912, and a side plate portion 913, and the rear end portions of the pair of side wall portions 8. Arranged between. In this example, the gap 62 between the circumferential surface of the body portion of the short pan P and the curved surface 91 of the curved plate portion 911 is designed to be 30 mm or less. Note that both side surfaces of the rear heat collecting portion 9 are in contact with the side surface portion 812 inside the side wall portion 8, and the rear surface of the rear heat collecting portion 9 is in contact with the front surface of the air flow path cylinder portion 7.

  Next, the heating of the full-size pan P using the gas stove 1 of this example will be described. For example, a small pan P containing ingredients such as soup is placed on the five virtue 5 of the gas stove 1. In the state where the size pan P is placed on the virtues 5, the upper surfaces of the front claw portion 521 and the intermediate claw portion 523, the upper end surface of the front connection wall portion 53, and the first connection wall portion 541 in the side connection wall portion 54. While the upper surface is in close contact with the bottom portion of the size pan P, a gap 61 is formed between the intermediate claw portion 523 and the rear claw portion 522 and between the rear claw portions 522.

  Thus, after placing the full-size pan P on the virtues 5, the combustion gas burner 4 is burned to heat the full-size pan P. In order to burn the combustion gas burner 4, the gas cock 29 may be opened by turning the operation knob in the ignition direction. When the gas cock 29 is opened, combustion gas is supplied to the burner body 41 through the gas pipe 27 and the mixing pipe 42, ignited by the seed flame burner, and combustion is started in the combustion gas burner 4. In this example, it is possible to visually adjust the flame state of the combustion gas burner 4 directly from the opening 55 of the five virtues 5 and adjust the heating power.

  When combustion of the combustion gas burner 4 is started, a flame is formed in the combustion chamber 3 and high-temperature exhaust gas is generated by combustion. The bottom of the short pan P is heated by the flame and the exhaust gas. The exhaust gas is heated by the draft of the exhaust draft, the temperature difference, the draft generated by the gas jet from the combustion gas burner 4 and the like. It flows upward from the gap 61 formed by the portion 52 (see arrow B in FIG. 2). At this time, the gas stove 1 has a front connection wall portion 53 between the pair of front claw portions 521 of Gotoku 5, and further, a side connection wall between the front claw portion 521 and the intermediate claw portion 523. Since it has the part 54, the outflow of the exhaust gas to the front is reliably suppressed. As described above, the high-temperature exhaust gas mainly flowing out from the rear of Gotoku 5 rises along the gap 62 formed between the circumferential surface of the trunk portion of the short pan P and the curved surface 91 of the rear heat collecting portion 9. And the trunk | drum peripheral surface part of the back side of the small-sized pot P is heated by heat transfer. Thereafter, the air is collected in an exhaust hood (not shown) disposed above the gas stove 1 and exhausted to the outside of the unit.

  Further, part of the air that has flowed into the stove body 2 from the lower surface of the stove body 2 or the gallery 212 of the front plate portion 21 due to the draft or the like flows into the combustion chamber 3 and is burned by the combustion gas burner 4. (See arrow A in FIG. 2). The inflowing air cools the stove body 2 and then flows into the air channel cylinder portion 7 having its lower end connected to the upper end of the stove body 2 to rise in the cylinder. It discharges | emits from the upper end part of the flow-path cylinder part 7 (refer arrow C of FIG. 2). The discharged air is collected in an exhaust hood (not shown) together with the exhaust gas and exhausted to the outside of the unit.

  Here, the gas stove 1 has a pair of side wall parts 8 provided with the said structure. Therefore, in the gas stove 1, the air D is sucked from the stove body 2 into the side wall portion 8 through the air suction port 82. The air D sucked into the side wall portion 8 cools the side wall portion 8 while flowing through the side wall portion 8, and then is discharged from the air discharge port 83 into the air flow path cylinder portion 7.

  In this example, specifically, as shown in FIG. 9, air D <b> 1 is sucked from the stove body 2 into the first flow path 851 of the side wall portion 8 through the first air suction port 821. The air D1 sucked into the first flow path 851 flows through the first flow path 851, and forms a part of the first flow path 85, that is, in this example, the front end face portion 811 of the side wall portion 8, After the inclined surface portion 814, the upper end surface portion 813, and both side surface portions 812 corresponding to the first flow path 851 are cooled, they are discharged into the air flow path cylinder section 7 through the upper pipe 871 inserted into the first air discharge port 831. Is done. In this example, air D <b> 2 is sucked from the stove body 2 into the second flow path 852 of the side wall portion 8 through the second air suction port 822. The air D2 sucked into the second flow path 852 corresponds to the surface constituting a part of the second flow path 852 while flowing through the second flow path 852, that is, in this example, the second flow path 852. After cooling both side surfaces 812, the air is discharged into the air flow channel cylinder 7 through the lower pipe 872 inserted into the second air discharge port 832. Therefore, the gas stove 1 can suppress the high temperature of the side wall portion 8 during use of the stove by cooling with the air D1 and D2.

  In addition, since the partition plate 84 is provided in the side wall portion 8 of the gas stove 1, the air D <b> 1 and D <b> 2 are less likely to stay in the side wall portion 8, and cooling of the side wall portion 8 can be promoted. It is easier to further suppress the high temperature of the side wall portion 8. Moreover, the gas stove 1 has the arrangement of the air suction port 82 and the air discharge port 83 in the side wall portion 8 as described above. Therefore, in the gas stove 1, the air D 1 and D 2 are taken into the side wall portion 8 from the air suction port 82 disposed further forward as viewed from the air flow path cylinder portion 7, and the taken air D 1 and D 2 are taken into the side wall portion 8. The inside is sufficiently refluxed toward the rear, and is discharged from an air discharge port 83 that is far away from the air suction port 82. Therefore, the gas stove 1 is easy to sufficiently cool the side wall portion 8 and is advantageous in suppressing the temperature increase of the side wall portion 8.

  In addition, since the second flow path 852 includes the second partition plate 862, the gas stove 1 functions as a shielding plate that shields heat from the second partition plate 862. There is an advantage that it becomes easier to cool. Further, the gas stove 1 can increase the flow velocity of the air D2 in the second flow path 852, and the air D2 is easily sucked from the second air suction port 822, and the side surface constituting a part of the second flow path 852. This is advantageous for efficiently cooling the portion 812. Similarly, in the gas stove 1, since the first flow path 851 has the first partition plate 861, the flow rate of the air D1 in the first flow path 851 can be increased, and the air from the first air suction port 821 can be increased. D1 is easily sucked, which is advantageous for efficiently cooling the side surface portion 812 constituting a part of the first flow path 851.

  Further, the gas stove 1 is provided with an internal duct 87 in the air flow path cylinder portion 7. Therefore, the gas stove 1 causes air D1 and D2 in the side wall 8 to pass through the internal duct 87 by the draft effect of the air C that flows from the lower side to the upper side in the air flow channel cylinder 7. It can be discharged efficiently. Moreover, since the air D1 and D2 in the side wall part 8 are efficiently discharged into the air flow path cylinder part 7, suction of the air D1 and D2 from the air suction port 82 is promoted. Therefore, the gas stove 1 is excellent in the cooling effect of the side wall portion 8.

  Further, the gas stove 1 can increase the flow rate of the exhaust gas rising from the combustion chamber 3 by flowing air from the front through the recess 81 of the side wall 8 through the recess 81 of the side wall 8 and flowing out from the combustion chamber 3 due to the exhaust gas draft effect. . And when the flow rate of exhaust gas goes up, the gas stove 1 can heat the trunk | drum peripheral surface of the back side of the full-size pan P efficiently, and can improve thermal efficiency. If the heat efficiency of the gas stove 1 is improved, the boiling time of hot water can be shortened and the amount of combustion gas consumed when maintaining the temperature can be reduced, so that the energy-saving gas stove 1 is obtained.

  In addition, the gas stove 1 is, in particular, disposed at a position where the deepest part of the dent of the concave portion 81 overlaps the boundary line M, and further, a cross-sectional shape of the concave portion 81 when cut by a plane substantially parallel to the top plate portion 24. Is a line-symmetric shape with the boundary line M as the axis of symmetry. Therefore, the gas stove 1 is excellent in balance between the flow of air from the front into the recess 81 and the outflow of air that has flowed into the recess 81.

  Further, in the gas stove 1, since the recess 81 has a pair of inclined surfaces 815 that are inclined toward the deepest portion of the recess of the recess 81, the formation of the recess 81 is relatively easy. Moreover, since the upper end edge of the recessed part 81 is arrange | positioned below the upper end edge of the side wall part 8, the wall surface of the side wall part 8 in which the recessed part 81 is not formed is above the upper end edge of the recessed part 81. positioned. Therefore, the gas stove 1 can suppress the air flowing into the concave portion 81 from flowing out upward from the upper end portion of the concave portion 81, and the air can easily flow efficiently backward, contributing to increasing the above-described effects. can do.

  Moreover, since the gas stove 1 has the back heat collecting part 9, it exhausts along the uniform clearance gap 62 formed between the trunk | drum peripheral surface part of the inked pan P and the curved surface 91 of the back heat collecting part 9. The gas can be raised. For this reason, the gas stove 1 can efficiently heat the peripheral surface of the body portion on the rear side of the short pan P in combination with the effect of increasing the flow velocity of the exhaust gas by the concave portion 81 of the side wall portion 8, further improving the thermal efficiency. Easy to make.

  As mentioned above, although the Example was described, this invention is not limited by the said Example, A various deformation | transformation can be performed within the range which does not impair the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Stove body 24 Top plate part 3 Combustion chamber 32 Upper end opening part 4 Combustion gas burner 5 Gotoku 7 Air channel cylinder part 8 Side wall part 82 Air suction port 83 Air exhaust port D Air

Claims (9)

The stove body,
A combustion gas burner provided in a combustion chamber in the stove body,
Gotoku provided around the upper end opening of the combustion chamber,
A substantially cylindrical air flow path tubular portion that is provided at a rear end portion of the stove body, communicates with the inside of the stove body, and guides and discharges air flowing in from the stove body upward;
A gas stove having a pair of side wall portions protruding upward from both side edges of the top plate portion of the stove body,
The inside of the side wall is hollow,
The lower end portion of the side wall portion is provided with an air suction port for communicating the inside of the stove body and the inside of the side wall portion, and sucking air from the inside of the stove body into the side wall portion,
The rear end portion of the side wall portion is provided with an air discharge port for communicating the inside of the side wall portion and the inside of the air flow channel cylinder portion and discharging the air flowing through the side wall portion into the air flow channel cylinder portion. A gas stove characterized by The gas stove according to claim 1, wherein
A partition plate that divides an air flow path from the air suction port to the air discharge port into two of a first flow path and a second flow path is provided inside the side wall portion. Gas stove. The gas stove according to claim 1 or 2,
The gas stove characterized in that the air suction port is provided near the front end portion at the lower end portion of the side wall portion, and the air discharge port is provided near the upper end portion at the rear end portion of the side wall portion. The gas stove according to claim 2 or 3,
The air suction port has a first air suction port and a second air suction port separated by the partition plate, and the air discharge port is a first air discharge port and a second air separated by the partition plate. Has an outlet,
The first flow path has one end communicating with the first air suction port and the other end communicating with the first air discharge port, and is between the first air suction port and the first air discharge port. Is formed along at least the front end and the upper end of the side wall,
The second flow path has one end communicating with the second air suction port and the other end communicating with the second air discharge port, and is disposed below the first flow path. Gas stove. The gas stove according to claim 4, wherein
The gas stove, wherein the second flow path has a second partition plate for flowing the air sucked from the second air suction port into two parts, an inner side and an outer side. The gas stove according to claim 5, wherein
The air that is divided into two by the second partition plate and flows in the second flow path joins at the rear end side of the second flow path and is discharged from the second air discharge port. Gas stove characterized by being made. In the gas stove according to any one of claims 4 to 6,
The gas stove, wherein the first flow path has a first partition plate for dividing the air sucked from the first air suction port into an inner side and an outer side. In the gas stove according to any one of claims 1 to 7,
A gas stove characterized in that an internal duct having one end communicating with the air channel cylinder and the other end connected to the air outlet is provided in the air channel cylinder. The gas stove according to claim 8, wherein
One end opening of the internal duct is disposed facing upward in the air flow channel cylinder.

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