JP4764226B2 - Gas low range - Google Patents

Description

  The present invention relates to a gas low range (gas stove) in which a combustion gas such as city gas is burned and used as a heat source for cooking.

  Conventionally, a gas low range in which a combustion gas such as city gas is burned and used as a heat source for cooking is generally used. In this conventional gas low range, a combustion gas burner is provided in a main body casing, a virtues are provided above the combustion gas burner, and a cooking pan such as a small-sized pan is placed on the virtues to perform heating cooking.

  Gotoku is composed of a plurality of claws arranged at intervals in the circumferential direction. A cooking pan is placed on the upper surface of the claws, and the flame of the combustion gas burner is applied to the bottom of the pan and heated, and acts on the bottom of the pan. Hot exhaust gas is discharged from between the five virtue claws to the surroundings to heat the entire side of the cooking pan.

  In such a gas low range, the hot exhaust gas is discharged around the cooking pan. Therefore, if the gas low range is installed in close contact with the wall surface of the room or close to the wall surface, the exhaust gas having a high temperature on the wall surface. The gas low range could not be installed in close contact with or in close proximity to the wall surface because it could be damaged by heating.

Therefore, in order to prevent high-temperature exhaust gas from being discharged to the surroundings, there has been considered one in which a heat ring is provided instead of the above five virtues composed of a plurality of claws (see, for example, Patent Document 1). This is because a substantially annular heat ring is provided at the upper end of the side wall of the combustion chamber having a substantially cylindrical shape, and when the cooking pan is placed on the heat ring, the entire circumference of the heat ring and the bottom of the pan come into contact with each other. The opening is closed so that the exhaust gas is not discharged around the cooking pan. An exhaust port is formed at the rear part of the side wall of the combustion chamber, and an exhaust flue is connected to the exhaust port. Exhaust gas generated in the combustion chamber is exhausted through the exhaust flue. .
JP 7-318064 A

  By the way, in such a conventional gas low range, since the combustion chamber is provided in the main body casing and the exhaust flue is provided, all the high-temperature exhaust gas generated in the combustion chamber is exhausted through the exhaust flue. At this time, the surface of the main body casing becomes hot, and there is a risk of burns when touched by the user. Therefore, it is conceivable to cool the main casing, but if a member such as a cooling fan is provided to flow cooling air, the cost increases.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an exhaust flue for disposing exhaust gas from the combustion chamber while disposing a combustion chamber having a combustion gas burner in the main body casing. In a gas low range in which hot exhaust gas is not discharged to the surroundings by providing a heat ring at the upper end of the combustion chamber that closes the upper end opening of the combustion chamber when the pan is placed on the upper surface. An object of the present invention is to provide a gas low range capable of preventing a user from being burned by the surface of a main body casing becoming hot without providing a member such as a cooling fan.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided with an exhaust flue 4 for disposing exhaust gas from the combustion chamber 3 while disposing a combustion chamber 3 having a combustion gas burner 2 inside the main body casing 1. In the gas low range in which a heat ring 5 is provided at the upper end of the side wall 31 of the combustion chamber 3 so as to close the upper end opening 31b of the side wall 31 of the combustion chamber 3 when the pan is placed on the upper surface. The side plate portion 12 and the top plate portion 14 of the side plate portion 12 have a double structure, and the air passage 61 in the side plate portion 12 and the cooling of the top plate portion 14 in the double plate structure from the opening (intake port 12d) at the lower end of the side plate portion 12 are used. A cooling air flow path that reaches the inside of the main casing 1 through the space 62 is formed, a lower end opening 31 a that communicates with the inside and outside of the combustion chamber 3 is formed at the lower end of the combustion chamber 3, and the side wall of the combustion chamber 3 31 and the top plate part 14 Is characterized in that the space 63 of the single 1 by forming a communication passage 14e communicating with the vertical toward the atmosphere above the top plate 14.

  According to such a configuration, the side plate portion 12 and the top plate portion 14 of the main casing 1 have a double structure to form a cooling air flow path and communicate with the inside and outside of the combustion chamber 3 at the lower end of the combustion chamber 3. By forming the lower end opening 31a, air in the main body casing 1 flows into the combustion chamber 3 from the lower end opening 31a due to a draft when exhaust gas is discharged by combustion in the combustion chamber 3, and accompanying this, Then, the air outside the main body casing 1 is taken in as cooling air from the intake 12 d at the lower end of the side plate portion 12, and passes through the air passage 61 in the side plate portion 12 and the cooling space 62 in the top plate portion 14. The air flows into the main body casing 1, and at this time, the side plate portion 12 and the top plate portion 14 are cooled by the cooling air, and the warmed cooling air is discharged through the communication passage 14e. In this case, cooling air can be taken in using a natural draft without providing a member such as a cooling fan, and an increase in cost can be avoided.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the heat ring 5 on which the pan is placed is located above the top plate portion 14 of the main casing 1. is there.

  By setting it as such a structure, when the pan is mounted on the heat ring 5, the bottom of the pan comes into contact with the top plate portion 14 so that the top plate portion 14 is not heated.

  In the present invention, the main body casing is cooled without providing a member such as a cooling fan to prevent the user from touching the main body casing during cooking and being burned. The wall of the room is no longer heated through the surrounding air, and the wall of the room is not heated and damaged. Even it can be used safely.

  Hereinafter, the gas low range (gas stove) of this invention is demonstrated based on embodiment shown to drawing. 1 is a perspective view of a gas low range, FIGS. 2 to 4 are side views, plan views, and front views, FIG. 5 is a perspective view of a state where a pan is placed, and FIGS. 6 to 8 illustrate the flow of air. FIG. 9 is an explanatory view of the cooling space of the top plate portion.

  As shown in FIGS. 1 to 5, the gas low range is provided with a combustion chamber 3 in which a combustion gas burner 2 is accommodated in a main body casing 1 serving as an outer shell, and an exhaust flue 4 described later at a rear end portion of the main body casing 1. The main body is formed by projecting an air flow path cylinder portion 7 that accommodates the inside.

  The main body casing 1 is configured by joining a front plate part 11, side plate parts 12 on both sides, a back plate part 13 and a top plate part 14 into a rectangular box shape (but no bottom plate) by welding or the like. In addition, each plate portion is formed of a metal such as SUS (for example, SUS430). Further, leg portions 15 project from the lower end portions of the front plate portion 11, the side plate portion 12, and the back plate portion 13, and the front plate portion 11, the side plate portion 12, A lower end portion of the back plate portion 13 is disposed. In the present embodiment, the main body casing 1 is formed to have a width of 600 mm, a depth of 750 mm, a height of the leg portion 15 of 140 mm, and a height of 420 mm up to the top surface of the top plate portion 14. In this gas low range, the back plate portion 13 is installed in close contact with or along the wall surface of the room, and the front plate portion 11 side is the front and the back plate portion 13 side is the rear. And the one part or all part of the surface of the main body casing 1 is made into the double structure in which the air for cooling flows inside, and in this embodiment, the top-plate part 14 and the side-plate part 12 have a double structure. .

The top plate portion 14 has a double structure comprising an upper top plate 14a and a lower top plate 14b disposed with a gap below a substantially first half of the upper top plate 14a. A substantially circular opening 14c penetrating vertically is formed in a portion where the combustion chamber 3 is disposed. More specifically, as will be described later, the combustion chamber 3 is a space surrounded by a substantially cylindrical side wall 31, and the substantially cylindrical side wall 31 is located in the substantially circular opening 14 c at a substantially central portion of the upper top plate 14 a. It is arrange | positioned in the state penetrated by. The lower top plate 14 b is provided on the front side of the side wall 31 of the combustion chamber 3, and a portion between the upper top plate 14 a and the lower top plate 14 b in the front half of the top plate portion 14 cools the top plate portion 14. A space 62 is formed. In the present embodiment, as shown in FIG. 9, a right partition plate 14d ₁ facing right front is provided on the front side of about one third of the right side of the front half of the side wall 31 of the combustion chamber 3, and the front half of the side wall 31 is provided. the inner partition plate 14d ₂ to face forwardly disposed on the front side of approximately one-third of the portion of the central parts, the surface on the left front in front of about one-third portion of the left side of a front half of the side walls 31 The left partition plate 14d ₃ is provided to form a partition portion 14d, and the rear end portion of the lower top plate 14b is connected to the lower end portion of the partition portion 14d, and the upper top plate 14a, the lower top plate 14b, and both side plate portions 12, a space surrounded by the front plate 11 and the partition 14d is a cooling space 62. Further, the space 63 in the main body casing 1 (except for the combustion space 30 and the cooling space 62 in the combustion chamber 3; the same applies hereinafter) between the top plate portion 14 and the side wall 31 of the combustion chamber 3 and the top plate portion. 14 is a communication passage 14e that communicates with the atmosphere above 14. Further, a front opening 14f for communicating the upper and lower spaces of the lower top plate 14b is formed at the front end portion of the lower top plate 14b, and the cooling space 62 on the upper side of the lower top plate 14b and the inner casing 1 on the lower side are formed. The space 63 communicates with the front opening 14f.

  The front plate portion 11 is provided with an operation portion 17 for igniting the combustion gas burner 2, adjusting the thermal power, and extinguishing the fire, and the user can operate the operation portion 17 from the front side of the main casing 1. In addition, the front plate portion 11 is formed with an air intake hole 11 a for taking air into the space 63 in the main body casing 1 from the outside of the main body casing 1.

  The side plate portion 12 has a double structure consisting of an outer plate 12a and an inner plate 12b disposed inside the outer plate 12a via a gap, and between the outer plate 12a and the inner plate 12b. The gap serves as a ventilation path 61 through which cooling air passes, and an opening between the lower end of the outer plate 12a and the lower end of the inner plate 12b takes air from outside the main casing 1 as cooling air into the ventilation path 61. The intake 12d is for this purpose. The inner plate 12b has a through hole 12e formed in a portion corresponding to the cooling space 62 near the upper end of the front half, and has passed through the air passage 61 between the outer plate 12a and the inner plate 12b from below. Cooling air flows into the cooling space 62 from the through hole 12e. Further, the inner plate 12b has a lower through hole 12f formed below the portion where the through hole 12e is formed, and a part of the cooling air that has passed through the air passage 61 is formed in the main body from the lower through hole 12f. It flows into the space 63 in the casing 1.

  The back plate portion 13 has left and right end portions joined to the rear end portions of the both side plate portions 12, respectively. The front plate portion 11, both side plate portions 12, the back plate portion 13, and the top plate portion 14 as described above. Thus, the main casing 1 is configured. Moreover, in this embodiment, the juice receiver 16 is arrange | positioned between the leg parts 15 on the right and left sides of the lower end part of the main body casing 1. Further, an air flow path cylinder portion 7 in which the exhaust cylinder portion 40 is accommodated is protruded upward from the rear end portion of the top plate portion 14, and this will be described later.

  A combustion chamber 3 is disposed in the main body casing 1. In the combustion chamber 3, the inside surrounded by the side wall 31 becomes the combustion space 30. In this embodiment, the side wall 31 is made of a metal such as a substantially cylindrical SUS (for example, SUS430). The lower end of the side wall 31 of the combustion chamber 3 is opened to form a lower end opening 31a, and the combustion space 30 in the combustion chamber 3 communicates with the space 63 in the main casing 1 through the lower end opening 31a. Thus, secondary air when the combustion gas burner 2 burns flows into the combustion chamber 3 from the lower end opening 31a. A combustion gas burner 2 is disposed in the combustion chamber 3. In this embodiment, the combustion part 21 of the combustion gas burner 2 is disposed in the vicinity of the lower end of the combustion chamber 3 and the mixing tube 22 is below the combustion chamber 3 (that is, below the lower end of the side wall 31 of the combustion chamber 3). However, if at least the combustion section 21 is located in the combustion chamber 3 (that is, above the lower end of the side wall 31 of the combustion chamber 3), the exhaust gas generated in the combustion chamber 3 Since it is not discharged | emitted from the lower end opening 31a, it does not matter. Further, the main body casing 1 is provided so as to expose a pipe connection port 18 to which a downstream end of a gas supply pipe (not shown) made of a rubber hose or the like is exposed. 22 is connected by a gas supply pipe (not shown).

  In the combustion chamber 3, a seed fire burner 23 is disposed in the vicinity of the combustion part 21 of the combustion gas burner 2. The seed fire burner 23 is provided with a heat sensitive part composed of a thermocouple or the like. When the operation part 17 is operated to perform an ignition operation, the seed fire burner 23 is ignited by the piezoelectric spark, and the heat sensitive part is sufficiently heated. When a temperature higher than a predetermined temperature is sensed, the gas supply path to the combustion gas burner 2 is opened to supply gas, and the combustion gas burner 2 is ignited to start combustion. Further, when the flame disappears, a temperature higher than a predetermined temperature is not detected by the heat sensitive part, the gas supply path is closed, and combustion is stopped.

  A heat ring 5 is provided at the upper end of the side wall 31 of the combustion chamber 3. The heat ring 5 is made of metal such as SUS (for example, SUS304), the upper surface is a flat surface, and the cooking pot is placed on this surface. The portion provided with the heat ring 5 at the upper end of the side wall 31 of the combustion chamber 3 is located on the upper side of the top plate part 14 (upper side of the upper top plate 14 a), and the cooking pan was placed on the heat ring 5. Sometimes the bottom of the pan does not contact the top plate portion 14. When the cooking pan is placed on the heat ring 5, the upper end opening 31b of the side wall 31 of the combustion chamber 3 is closed by the cooking pan.

  A discharge port 32 for discharging exhaust gas generated in the combustion chamber 3 is formed in the rear part of the side wall 31 of the combustion chamber 3, and an exhaust pipe whose inside becomes the exhaust flue 4 is formed in the discharge port 32. The front end of the part 40 is connected. The exhaust cylinder part 40 is accommodated in the air flow path cylinder part 7 protruding upward from the top plate part 14, and the air flow path cylinder part 7 and the exhaust cylinder part 40 will be described below.

  The air flow path cylinder portion 7 has a substantially rectangular tube shape protruding upward from the vicinity of the rear end portion of the top plate portion 14 (upper top plate 14a), and the air flow path cylinder portion 7 of the upper top plate 14a protrudes. The open portion is open, and the space 63 in the main body casing 1 on the lower side of the upper top plate 14 a communicates with the space in the upper air flow path cylinder portion 7 through the communication port 70. In the present embodiment, a lower opening 71 is formed at the lower end of the rear end surface of the air flow path cylinder portion 7 so that the space in the air flow path cylinder portion 7 communicates with the atmosphere. When cooling air is flowing through the space, air further flows in from the lower opening 71. In addition, a slit 72 is formed on the upper end surface of the air flow path cylinder portion 7 so that the air flow path cylinder portion 7 communicates with the atmosphere. Further, the back surface of the air flow path cylinder portion 7 is formed by a double plate 73 composed of an outer plate 73a and an inner plate 73b, and the lower end opening and the upper end opening in the double plate 73 are the atmosphere (cooling air). And an air flow path 65 between them.

  The exhaust cylinder part 40 extends from the side wall 31 of the combustion chamber 3 to the vicinity of the horizontal cylinder part 41 protruding substantially horizontally toward the rear of the space 63 in the main body casing 1 and the back plate part 13 of the horizontal cylinder part 41. And a vertical cylindrical portion 42 protruding upward from the rear end portion. The upper part of the vertical cylinder part 42 from the top plate part 14 is accommodated in the air channel cylinder part 7, and the upper end opening 43 of the vertical cylinder part 42 is near the slit 72 at the upper end of the air channel cylinder part 7. Located and in communication with the atmosphere. That is, the space in the combustion chamber 3 and the atmosphere communicate with each other through the space in the exhaust cylinder portion 40, and the space in the air flow path cylinder portion 7 (except for the space in the exhaust cylinder portion 40, A space 63 in the main casing 1 and the atmosphere communicate with each other by a cooling flow path 64) which will be described later. Further, a heat insulating material 44 made of a gypsum board or a glass wool molding material is provided on the outer surface of the exhaust tube portion 40.

  In this way, the surface of the portion of the exhaust flue 4 located outside the main casing 1 has a double structure in which the outside is the air flow path cylinder portion 7 and the inside is the exhaust cylinder portion 40 through a gap of about 10 mm. In the meantime, a cooling flow path 64 through which cooling air flows is discharged and discharged from a discharge opening 80 of the drift portion 8 described later.

  A drift portion 8 is provided at the upper end portion of the air flow path cylinder portion 7. The drifting portion 8 flows through the exhaust cylinder portion 40 and is discharged above the upper end opening 43, and flows through the cooling passage 64 of the air passage cylinder portion 7 and is discharged above the slit 72. The upper end is bent diagonally forward and upward so that the high-temperature exhaust gas discharged upwards drifts forward so that the cooling air that flows will not flow toward the rear wall and heat the wall. Therefore, in this embodiment, the upper inclined portion 81 at the upper end is inclined so as to form an angle of 30 to 60 degrees from the horizontal direction.

  In addition, a deflection unit 45 is provided at the upper end of the exhaust tube unit 40. As shown in FIGS. 2 and 4, the deflecting portion 45 directs the flow of high-temperature exhaust gas that flows through the exhaust cylinder portion 40 and is discharged from the upper end opening 43 to the front. The deflection unit 45 has an upper swash plate 45a that is obliquely 30 to 60 degrees above the front (45 degrees in the present embodiment) and an inner 30 to 60 degrees (45 degrees in the present embodiment) that is obliquely forward. The flow that hits the upper swash plate 45a changes its direction diagonally upward from the front, and the flow that hits the side swash plate 45b changes its direction diagonally inward from the front so as to leave the wall. Flowing.

  Next, the flow of air in the gas low range will be described with reference to FIGS. First, the user operates the operation unit 17 to start combustion of the combustion gas burner 2. When combustion of the combustion gas burner 2 starts, high-temperature exhaust gas generated by combustion rises in the combustion chamber 3 and heats the bottom of the cooking pot and the heat ring 5. The exhaust gas is heated to the bottom of the pan or the like by an exhaust draft, a draft due to a temperature difference, or a draft generated by gas ejection from the combustion gas burner 2, and then flows to the rear of the combustion chamber 3 and is exhausted from the exhaust port 32 into the exhaust cylinder 40 It flows into the flue 4 (see arrow A in FIG. 6), is discharged from the upper end opening 43, and is discharged obliquely upward and inward from the front by the deflecting portion 45 (see arrow N in FIG. 6). The air is collected in an exhaust hood (not shown) disposed above and exhausted to the outside.

  At this time, a flow of cooling air is generated by the draft of the exhaust gas. First, air is taken in as cooling air from the inlet 12d at the lower end of the side plate portion 12 (see arrow b in FIG. 8). The cooling air cools the side plate portion 12 while flowing upward through the air passage 61 in the side plate portion 12 having a double structure, and a part of the lower through-hole formed in the inner plate 12 b of the side plate portion 12. 12f flows into the space 63 in the main body casing 1 from 12f (see arrow C in FIG. 8), and the rest in the top plate portion 14 having a double structure from the through holes 12e formed in the inner plate 12b of the side plate portion 12. It flows into the cooling space 62 (see the arrow in FIG. 7 and the arrow D in FIG. 8). The cooling air that has flowed into the cooling space 62 cools the substantially front half of the top plate portion 14 in which the cooling space 62 is formed. Most of the cooling air that has flowed into the cooling space 62 flows into the space 63 in the lower main body casing 1 from the front opening 14f formed at the front end of the lower top plate 14b (see arrow E in FIG. 6). A part is discharged from the communication passage 14e between the side wall 31 of the combustion chamber 3 and the top plate portion 14 onto the top plate portion 14 (see the arrow in FIG. 6), so that the heat pool is discharged from here. It has become. In addition, the air outside the main body casing 1 flows into the space 63 in the main body casing 1 from the air intake holes 11 a formed in the front plate portion 11.

  The cooling air that flows into the space 63 in the main body casing 1 from the lower through hole 12f of the side plate portion 12 and the front opening 14f of the lower top plate 14b, and the space 63 in the main body casing 1 from the air intake hole 11a of the front plate portion 11. Part of the air that has flowed into the combustion chamber 3 flows into the combustion chamber 3 from the lower end opening 31a of the combustion chamber 3 (see arrow G in FIG. 6) and is used as secondary air for the combustion gas burner 2, and together with the exhaust gas, the discharge port 32. More discharged. The remaining part of the cooling air flowing into the space 63 in the main body casing 1 is the atmosphere above the top plate portion 14 through the communication passage 14e between the top plate portion 14 and the side wall 31 of the combustion chamber 3. The remaining most of the cooling air that flows into the space 63 in the main body casing 1 flows into the cooling flow path 64 in the air flow path cylinder 7 at the rear of the main body casing 1 (see the arrow in FIG. 6). (See arrow H in FIG. 6). Thus, by providing a gap (that is, the communication path 14 e) between the side wall 31 of the combustion chamber 3 and the top plate portion 14 and thermally cutting the heat, the heat in the combustion chamber 3 is not conducted to the top plate portion 14. In addition, it is possible to achieve a further cooling effect by flowing cooling air through the communication passage 14e.

  The cooling air that has flowed into the cooling flow path 64 rises while cooling the air flow path cylinder portion 7 and the exhaust cylinder portion 40, and in the drift portion 8 above the air flow path cylinder portion 7 from the slit 72. It is discharged into the space. Then, the direction is changed in the direction away from the wall of the rear room by the drifting portion 8 (see the arrow in FIG. 6), and the air is collected by the exhaust hood disposed above the gas low range and is moved to the outside of the unit. Exhausted. Here, since the above-described heat insulating material 44 is provided in the exhaust cylinder portion 40, even if hot exhaust gas flows through the exhaust cylinder portion 40, the heat is transferred to the cooling air flowing in the cooling flow path 64. Therefore, the cooling effect can be enhanced without heating the air channel cylinder 7.

  At this time, even if cooling air flows through the cooling flow path 64 of the air flow path cylinder portion 7, some heat is transferred to the back surface of the air flow path cylinder portion 7. An upward flow is generated in the air flow path 65 (see the arrow in FIG. 6), and air as cooling air flows in from the opening at the lower end of the air flow path 65 and flows out from the opening at the upper end. The back surface of the road tube portion 7 is cooled. Thereby, a further cooling effect can be obtained.

  In the gas low range configured as described above, the side plate portion 12 and the top plate portion 14 of the main casing 1 have a double structure to form a cooling air flow path, and the combustion chamber 3 is formed at the lower end of the combustion chamber 3. By forming the lower end opening 31a communicating with the inside and outside of the chamber, air in the main casing 1 flows into the combustion chamber 3 from the lower end opening 31a by a draft when exhaust gas is discharged by combustion in the combustion chamber 3. Accordingly, the air outside the main casing 1 is taken in as cooling air from the intake 12 d at the lower end of the side plate 12, and the air passage 61 in the side plate 12 and the cooling space in the top plate 14. 62 flows into the main body casing 1 through 62, and at this time, the side plate portion 12 and the top plate portion 14 are cooled by the cooling air, and the warmed cooling air is discharged through the communication passage 14e. Is.

  As a result, the top plate portion 14 that is easy for the user to touch (in this embodiment, the first half that is particularly easy for the user to touch) has a double structure and is cooled by flowing cooling air. It is possible to prevent the main casing 1 from being touched and being burned.

  In this case, the cooling air can be taken in using a natural draft without providing a member such as a cooling fan, and an increase in cost can be avoided.

  In the present embodiment, the exhaust flue 4 is cooled and the double structure is provided by providing the cooling flow path 64 through which cooling air flows around the portion of the exhaust flue 4 located outside the main casing 1. Therefore, the wall surface of the room is not heated by heat conduction and convection through the air around the exhaust flue 4, and the inner member of the double structure (in this embodiment, the exhaust tube portion 40). ) Is heated to a high temperature, the radiant heat from the inner member is shielded and reflected by the outer member (in this embodiment, the air channel cylinder 7), and the wall surface of the room is heated by the radiant heat. Even if the exhaust flue 4 is placed in close contact with or along the wall surface of the room, the wall surface of the room will not be heated and damaged, and there is no risk of burns. It becomes possible to be used for.

  Furthermore, in this embodiment, the combustion gas burner 2 is disposed at a position close to the front side of the combustion chamber 3. In the gas low range of this embodiment, since the heat ring 5 is provided instead of the five virtues made of claws, when the cooking pan is placed on the heat ring 5, the upper end opening 31b of the combustion chamber 3 is closed and the exhaust gas is generated. The exhaust gas generated in the combustion gas burner 2 without being discharged around the cooking pan is discharged from the discharge port 32 at the rear of the combustion chamber 3. For this reason, in the case of the one provided with the five victories composed of claws, the exhaust gas is exhausted around the cooking pan and the high-temperature exhaust gas is heated around the cooking pan, whereas the heat ring 5 is provided. In the case of the soup, only the bottom of the cooking pan is heated until the high-temperature exhaust gas generated in the combustion gas burner 2 is exhausted from the exhaust port 32 at the rear of the combustion chamber 3, and the amount of heat given to the cooking pan is reduced. Tend to be smaller. Therefore, as in the present embodiment, the combustion gas burner 2 is disposed at a position close to the front side of the combustion chamber 3, and the hot exhaust gas generated in the combustion gas burner 2 heats the pan bottom of the cooking pan to form a rear outlet. The amount of heat given to the cooking pan can be increased by increasing the distance from 32 to the discharge.

It is a whole perspective view of one embodiment of the gas low range of the present invention. It is a side view same as the above. It is a top view same as the above. It is a front view same as the above. It is a whole perspective view of the state which loaded the pot in the same as the above. It is a side view explaining the flow of air. It is a top view explaining the flow of air. It is a principal part front view explaining the flow of air. It is a top view explaining the cooling space of a top plate part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body casing 12 Side plate part 12d Intake port 13 Back plate part 14 Top plate part 15 Leg part 16 Juice receiver 17 Operation part 2 Combustion gas burner 23 Type fire burner 3 Combustion chamber 30 Combustion space 31 Side wall 32 Exhaust port 4 Exhaust flue 40 Exhaust Cylinder part 5 Heat ring 61 Ventilation path 62 Cooling space 7 Air flow path cylinder part 8 Drift part

Claims (2)

A combustion chamber equipped with a combustion gas burner is disposed in the main body casing, and an exhaust flue for exhausting exhaust gas from the combustion chamber is disposed. When the pan is placed on the upper surface, the combustion chamber side wall In the gas low range in which a heat ring that closes the upper end opening is provided at the upper end of the side wall of the combustion chamber, the side plate portion and the top plate portion of the main body casing have a double structure, and the side plate that has the double structure from the opening at the lower end of the side plate portion Forming a flow path of cooling air that reaches the inside of the main body casing via the air passage in the unit and the cooling space in the top plate, and forms a lower end opening communicating with the inside and outside of the combustion chamber at the lower end of the combustion chamber, A gas low range characterized in that a communication passage is formed between the side wall of the combustion chamber and the top plate portion so as to communicate vertically from the space in the main body casing toward the atmosphere above the top plate portion.   The gas low range according to claim 1, wherein the heat ring on which the pan is placed is located above the top plate portion of the main body casing.

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