Barbecue stove

Abstract

To provide a barbecue stove capable of maintaining heated food at a constant temperature, preventing the heated food from burning and cooling, and providing the food in a warm state as if it had just been cooked whenever a user desires to eat it. [Solution] The barbecue grill 1 comprises a fire source storage section 2 with an open top, a main body frame section 4 that stores and supports the fire source storage section 2, legs 6 connected to the main body frame section 4, and a heat retention section 7 having a space 8 for accumulating heat, the heat retention section 7 is provided on one of the outer surfaces of the main body frame section 4, and a heat conduction means is provided between one of the outer surfaces of the main body frame section 4 and the heat retention section 7, capable of conducting heat to the heat retention section 7.

Description

[Technical field]

[0001] This invention relates to a barbecue grill. [Background technology]

[0002] For example, a barbecue stove used for outdoor activities basically stores fuel such as charcoal or firewood inside the stove, and cooks food by placing a grill on the upper opening of the stove body.

[0003] In recent years, with the increase in outdoor activities, barbecue grills have become known that are highly functional and provide users with a new cooking experience, thereby further expanding the enjoyment of outdoor activities (e.g., Patent Documents 1 and 2).

[0004] In Patent Document 1, a divided baking area 8 and a heat retention area 10 are provided on the upper surface of a cooking appliance body 4, and a table portion 20 is formed below the heat retention area 10, and a heat retention space portion 22 connected to a heat dissipation portion 4-1 is formed below this table portion 20.

[0005] In Patent Document 2, a grill section 3 is installed in a suspended state on a body 7 so as to surround the periphery of a cylindrical storage section 2 that stores a fire source 1, and meat placed on the grill section 3 is grilled at a high temperature by radiant heat from the fire source 1 or the parts heated by the fire source 1, and by heat conducted to the grill section 3 through contact with the cylindrical storage section 2, the fire source 1, and a receiving tray 9, which are the fire source 1 or the parts heated by the fire source 1. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7137402 [Patent Document 2] JP 2001-304553 A Summary of the Invention [Problem to be solved by the invention]

[0007] Meanwhile, users have been hoping for a barbecue grill that can maintain heated ingredients (i.e., various cooked dishes) at a constant temperature, prevent the heated ingredients from burning, and prevent the ingredients from cooling down, allowing the ingredients to be served warm, as if they were freshly cooked, whenever the user wants to eat them.

[0008] However, in the above Patent Document 1, the distance between the heat source section 6 and the heat-retaining space section 22 is configured to be constant, so when the temperature of the heat source section 6 is lowered, the temperature of the baking area is lowered and the temperature of the heat-retaining area is also lowered, and therefore it is not possible to adjust the temperature of the heat-retaining space section 22.

[0009] In addition, in the above Patent Document 2, since heat is released from the grill section 3, it is only possible to grill food, and it is difficult to regulate the temperature, making it impossible to maintain a constant temperature.

[0010] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a barbecue grill that can maintain heated food at a constant temperature, prevent the heated food from burning, and prevent the food from cooling down, allowing the user to eat the food while it is still warm, as if it had been freshly cooked, whenever they want to eat it. [Means for solving the problem]

[0011] (1) The present invention relates to a barbecue grill comprising a fire source storage section with an open top for storing a fire source, a main body frame section for storing and supporting the fire source storage section, legs connected to the main body frame section, and a heat retention section having a space for accumulating heat, the heat retention section being provided on any one of the outer surfaces of the main body frame section, and a heat conduction means being provided between any one of the outer surfaces of the main body frame section and the heat retention section, capable of conducting heat generated by the fire source in the fire source storage section to the heat retention section.

[0012] According to the present invention having the above-mentioned feature (1), a heat retention section is provided on any one of the outer surfaces of the main body frame section, and a heat conduction means is provided between any one of the outer surfaces of the main body frame section and the heat retention section, which is capable of conducting heat generated by the fire source in the fire source storage section to the heat retention section. As a result, the heat conducted by the heat conduction means keeps the heat retention section warm, and by placing heated food ingredients on the heat retention section, the food ingredients can be kept warm.

[0013] (2) Furthermore, in the present invention, the heat conduction means comprises a main body frame side vent provided on any one of the outer surfaces of the main body frame portion to allow the heat to pass through, and a heat retention section side vent provided at an end of the heat retention section, and is configured so that the main body frame side vent and the heat retention section side vent are fitted together to guide the heat to the heat retention section.

[0014] According to the present invention having the above feature (2), the heat conduction means comprises a main body frame side air vent provided on any one of the outer surfaces of the main body frame portion to allow heat to pass therethrough, and a heat retention section side air vent provided at the end of the heat retention section. The main body frame side air vent and the heat retention section side air vent are fitted together so that heat is conducted to the heat retention section, whereby the heat retention section is kept warm by heat conducted through the fitted main body frame side air vent and heat retention section side air vent, and by placing heated food ingredients on the heat retention section, the food ingredients can be kept warm.

[0015] (3) Furthermore, the present invention is characterized in that a fitting portion is provided at the ventilation port on the main body frame portion side, and the heat retaining portion is detachable from the fitting portion.

[0016] According to the present invention having the above feature (3), a fitting is provided at the vent on the main body frame side, and the heat retaining part is detachable from the fitting, so that the heat retaining part can be detached from the main body frame. As a result, it is possible to easily store the heat retaining part and to easily clean the heat retaining part.

[0017] (4) Furthermore, in the present invention, the heat-retaining portion has an opening on its upper surface, and the opening is covered with a plate to form a space for accumulating the heat.

[0018] According to the present invention having the feature described above in (4), the heat-retaining section has an opening on its upper surface, and by covering the opening with a plate, a space for accumulating heat is formed, and heat is accumulated in the space. When heated food is placed on the plate, the heat accumulated in the space makes it possible to keep the food warm.

[0019] (5) In addition, in the present invention, the fire source storage section slides so as to move closer to or further away from the main body frame side ventilation opening.

[0020] According to the present invention having the above characteristic (5), the fire source storage section is configured to slide so as to move closer to or farther away from the ventilation opening on the main frame side. Therefore, by moving the fire source closer to or farther away from the ventilation opening on the main frame side to adjust the conduction of heat, it is possible to maintain a constant temperature in the heat-retaining section.

[0021] (6) In addition, in the present invention, a unit is provided that is composed of a heat retaining part that can be attached to and detached from the main frame of a barbecue stove and a plate that can be closely attached to the heat retaining part, The unit includes an insertion portion that can be fitted to any one of the outer surfaces of the main body frame portion, and a heat retention portion side vent that guides heat from the main body frame portion to the inside, The plate is detachable from the heat retaining part, and a space is formed within the heat retaining part when the heat retaining part is attached.

[0022] The unit according to the present invention, which has the above-mentioned feature (6), allows the food cooked on the barbecue grill to be easily carried along with the warming unit or the plate. In addition, the unit is easy to clean after use, and the use of paper dishes, etc. can be reduced. Effect of the Invention

[0023] According to the present invention, the heated ingredients can be maintained at a constant temperature, preventing them from burning and cooling, and making it possible to provide the ingredients in a warm state, as if they were freshly cooked, whenever the user wants to eat them. [Brief description of the drawings]

[0024] [Figure 1] 1 is a perspective view showing the overall configuration of a barbecue grill according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing the barbecue grill in FIG. 1 with the heat retaining section and net section removed. [Diagram 3] FIG. 2 is a cross-sectional view of a barbecue grill according to one embodiment of the present invention with a heat retaining part attached, taken along the line AA in FIG. [Figure 4] 2 is a cross-sectional view of a barbecue grill according to one embodiment of the present invention with the heat retaining part removed when the grill is turned off at BB in FIG. 1 . [Diagram 5] 2 is a cross-sectional view of a barbecue grill according to one embodiment of the present invention with a heat retaining part attached when the grill is turned off at BB in FIG. 1 . [Figure 6] FIG. 13 is a diagram showing the heat retaining section as viewed from above with the plate removed. [Figure 7] FIG. 13 is a diagram showing the heat retaining section as viewed from the side with the plate removed. [Figure 8] 13 is a diagram showing the heat retention section as viewed from the end side where the heat retention section side ventilation port is provided. FIG. [Figure 9] FIG. 2 is an enlarged view of the fire source storage area of ​​the barbecue grill according to the embodiment of the present invention. [Figure 10] FIG. 13 is a cross-sectional view of a heat retaining part with a plate attached. [Figure 11] FIG. 13 is a diagram showing measurement areas in a heat retention test on a plate surface. [Figure 12]This table shows test results regarding the temperature change on the plate surface when the heat retention section is attached and the main body frame section side vent and the heat retention section side vent are engaged (state "with vent"), and when the main body frame section side vent and the heat retention section side vent are blocked (state "without vent"). [Figure 13] 13 is a graph showing the test results in FIG. 12. [Figure 14] This is a table showing test results regarding the temperature change at each specified location on the plate surface when the heat retention section is attached and the main frame section side air vent and the heat retention section side air vent are engaged (``air vent with'' state). [Figure 15] 15 is a graph showing the test results in FIG. 14. [Figure 16] 13 is a table showing test results relating to temperature changes at specific locations on the plate surface when the fire source storage unit is moved away from the plate. [Figure 17] 11 is a table showing test results relating to temperature changes at specific locations on the plate surface when a fire source storage section is brought close to the plate. [Figure 18] 1 is a table showing test results relating to the change in temperature (average value) at each specified point on the plate surface when the fire source storage unit is moved away from and close to the plate. [Figure 19] 19 is a graph showing the test results in FIG. 18. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, a barbecue grill according to an embodiment of the present invention will be described with reference to Figs.

[0026] <Overall configuration of barbecue stove> The barbecue grill 1 of this embodiment shown in Figures 1 to 10 comprises a fire source storage section 2, a main body frame section 4 that stores and supports the fire source storage section 2, legs 6 connected to the main body frame section 4, and a heat retention section 7 having a space 8 for accumulating heat.

[0027] The barbecue grill 1 has a heat retention section 7 provided on either the long side outer surface 10 or the short side outer surface 11 of the main body frame section 4, and is provided with heat conduction means (this is the "heat conduction means" in the utility model claims, and corresponds to the main body frame section side vent 12 and the heat retention section side vent 17 described below) between either the long side outer surface 10 or the short side outer surface 11 of the main body frame section 4 and the heat retention section 7, which can conduct heat generated by the fire source in the fire source storage section 2 to the heat retention section 7. Each component of the barbecue grill 1 according to this embodiment will be described below.

[0028] <About the fire source storage area> The fire source storage section 2 has an open top and is formed so that it can store a fire source. The fire source is, for example, fuel such as charcoal. The fire source storage section 2 is formed so that it can be held by the fire source storage section holding member 31 of the main body frame section 4, and is formed so that it can slide relative to the main body frame section 4 when stored in the main body frame section 4. More specifically, it is formed so that the fire source storage section 2 can be brought close to the heat retention section 7 as shown in FIG. 5A, or can be moved away from the heat retention section 7 as shown in FIG. 5B. Furthermore, a stopper member may be formed to store the fire source storage section 2 within the main body frame section. The fire source storage section 2 also has a grip section 3 that the user grips when sliding.

[0029] <About the main frame> The main body frame 4 is rectangular in plan view and has a pair of long side outer surfaces 10 and a pair of short side outer surfaces 11 connecting one longitudinal end of each of the long side outer surfaces 10 and the other longitudinal end thereof, with the top surface being open. The main body frame 4 is formed so that the fire source storage section 2 can be held within the main body frame 4 by an internal fire source storage section holding member 31. A mesh section 5 (a so-called grill; see FIG. 1) is placed on the top surface of the main body frame 4.

[0030] The main body frame section 4 is provided with a main body frame section side vent 12 for passing heat generated by a fire source on either a pair of long side outer surfaces 10 or a pair of short side outer surfaces 11. The main body frame section side vent 12 constitutes the "heat conduction means" in the claims of the utility model registration, and in this embodiment, the main body frame section side vent 12 is provided on the long side outer surface 10, but it does not have to be on the long side outer surface as long as it is a side surface that is configured so that the heat retention section 7 can be installed.

[0031] 3 is a cross-section taken along the line AA of a barbecue grill according to an embodiment of the present invention. In this embodiment, two main frame vents 12 are formed to extend along the long outer side surface 10 of the main frame 4. As shown in FIG. 9 and FIG. 10, the shape and number of the main frame vents 12 are not particularly important as long as they are configured to match the heat retaining part vents 17 provided on the corresponding side surface of the heat retaining part 7. With this configuration, an appropriate ventilation path is secured with the two closely connected, the hot air generated from the fire source storage part is appropriately retained inside the heat retaining part, and the heat retaining effect of the heat retaining part is excellent.

[0032] As shown in Figures 1, 2, 7 and 8, the heat retention section side ventilation opening 17 and the main body frame ventilation opening 12 provided on the corresponding side of the heat retention section 7 can be fixed in an aligned state by fitting the insertion portion 14 of the heat retention section into the fitting portion 13 provided on the main body frame section.

[0033] Of the four sides of the main body frame portion 4, on the sides other than the side on which the main body frame portion side ventilation port 12 is provided and the side opposite it, main body frame portion air holes 20 can be provided to take in outside air and improve combustion efficiency. <About the fitting part>

[0034] As shown in Fig. 4, the main body frame section 4 has a fitting section 13 on one of the long side outer surfaces 10. The shape and structure of the fitting section 13 need only be configured so that when the fitting section 13 is fitted with the heat retaining section 7, the heat generated by the fire source in the fire source storage section 2 can be efficiently conducted to the heat retaining section 7. In this embodiment, as shown in Figs. 2 and 7, the fitting section 13 is provided with a shape that can fit with the insertion section 14 that is configured so that the heat retaining section 7 is L-shaped when viewed from the side, thereby making it possible to configure the structure so that the surfaces other than the two vents are in contact and the structure can be freely attached and detached.

[0035] <About the legs> The legs 6 are provided in four pieces and are connected to the four corners of the lower surface of the main body frame portion 4. The legs 6 may be formed integrally with the main body frame portion 4, or may be detachable from the main body frame portion 4.

[0036] <About the heat retention part> The heat retaining section 7 is formed in a rectangular shape in plan view as shown in Fig. 6, and in an L-shape in side view as shown in Fig. 7, and includes an insertion section 14 and a plate mounting section 15 continuous with the insertion section 14, with a space 8 formed hollow from the insertion section 14 to the plate mounting section 15 (Fig. 10). Metallic materials with high heat retention are preferable as materials for forming the heat retaining section 7, and iron, stainless steel, aluminum, etc. can be used. In this embodiment, the plate surface is flat, but the surface may be provided with fine irregularities or ridges.

[0037] The insertion portion 14 is formed so as to be able to fit into the fitting portion 13 of the main body frame portion 4 by being inserted into the fitting portion 13. As shown in Fig. 8, an outer surface 16 of the insertion portion 14, which corresponds to the end of the heat retention portion 7, is formed with a heat retention portion side vent 17. In this embodiment, by making the heat retention portion 7 separate from the main body frame portion 4, cooked food can be easily carried, cleaning after cooking is easy, and the use of paper dishes, etc. can be reduced.

[0038] The heat retaining section side vent 17 constitutes the "heat conducting means" in the claims of the utility model registration, and is formed so as to extend along the longitudinal direction of the outer surface 16 of the insertion section 14 (two are formed in this embodiment). When the insertion section 14 is fitted into the fitting section 13, the heat retaining section side vent 17 fits into the main body frame section side vent 12, and the main body frame section side vent 12 and the heat retaining section side vent 17 communicate with each other, so that heat is guided to the heat retaining section 7.

[0039] The plate placement section 15 has an opening surface 19 on the upper surface section 18, and is configured to cover this opening surface 19 with a plate 9 (see Figs. 1, 8 and 10) and bring it into close contact with the opening surface 19 to form a space 8 for accumulating heat that has passed through the main body frame side vent 12, the heat retention section side vent 17, and the inside of the heat retention section 7. In this embodiment, the plate 9 is separate from the heat retention section 7, making it easy to clean after cooking and portable. It may also be configured to not provide the opening surface 19, and to integrally form the entire heat retention section 7, forming the space 8 for accumulating heat that has passed through the main body frame side vent 12, the heat retention section side vent 17, and the inside of the heat retention section 7.

[0040] <Test 1 for temperature change on plate surface> Next, with the heat retention section 7 attached, tests were conducted on the temperature change on the surface of the plate 9 when the main frame section side ventilation port 12 and the heat retention section side ventilation port 17 were engaged (hereinafter referred to as "with ventilation port") and when the main frame section side ventilation port 12 and the heat retention section side ventilation port 17 were blocked (hereinafter referred to as "without ventilation port"). The results are explained with reference to Figures 12 to 15, etc.

[0041] This test will be conducted according to the following steps (1) to (8). (1) Temperature sensors are provided at nine locations on the surface of plate 9 (locations indicated by "Circle 1" to "Circle 9" in FIG. 11, with "Circle 1" to "Circle 3" corresponding to the upper portion of insertion portion 14). (2-1) Prepare a barbecue grill with ventilation holes according to this embodiment. (2-2) A partition plate is provided between the main body frame side vent 12 and the heat retention side vent 17 to prepare a barbecue grill without a vent. (3) Prepare and weigh 35 fire sources (charcoal). (4) Ignite the charcoal using a fire starter. (5) Place ignited charcoal in the fire source storage section 2. The 35 pieces of charcoal are arranged in 5 columns and 7 rows when the long outer surface 10 of the main body frame section 4 is oriented vertically. (6) Install the fire source storage section 2 as close as possible to the ventilation opening 12 on the main frame side. (7) Turn on the data logger and begin measuring temperature. (8) The temperatures of the plate 9 and the mesh portion 5 are measured for two hours, and the temperatures of the plate 9 with and without the ventilation hole are compared.

[0042] From the test results shown in Figures 12 and 13, it can be said that the temperature of the surface of the plate 9 is higher in the embodiment with "vent hole" than in the embodiment without "vent hole." Therefore, it was proven that the temperature of the surface of the plate 9 is not increased by simply arranging the heat retention section 7 next to the main body frame section 4, as heat is transferred from the main body frame section 4 to the heat retention section 7, but rather that heat (radiant heat) is transferred from the main body frame section side vent 12 and the heat retention section side vent 17 and accumulated in the space 8, causing the temperature of the surface of the plate 9 to increase.

[0043] Furthermore, from the test results shown in Figures 14 and 15, the temperature of the surface of plate 9 near the main frame side ventilation opening 12 and the heat retention section side ventilation opening 17 is high, reaching a maximum of about 100°C, and therefore it can be said that the function of keeping food placed on the surface of plate 9 moderately warm is ensured.

[0044] <Test 2 for temperature change on plate surface> Next, a test was conducted to examine the temperature change on the surface of plate 9 by moving fire source storage section 2 closer to or farther from main frame section side ventilation port 12 and heat retention section side ventilation port 17 (Figure 5A is the closest state, and Figure 5B is the farthest state), and the temperature changes were compared with reference to Figures 16 to 19, etc.

[0045] This test will be conducted according to the following steps (1) to (6). (1) Prepare a barbecue grill according to this embodiment with a vent hole as described above in "Test 1 on temperature change on plate surface." (2) A temperature sensor is provided on the surface of plate 9 in the same manner as in "Test 1 for temperature change on plate surface," and measurement of the temperature on the surface of plate 9 is started. (3) The ignited fire source (charcoal) is placed in the fire source storage section 2 in the same manner as in “Test 1 on temperature change on plate surface,” and the temperature of the surface of plate 9 is measured for 10 minutes. (4) In the above (3), the temperature of the surface of plate 9 is measured for 10 minutes, and then a 1-minute interval is allowed to elapse. (5) After the interval in (4) above has ended, place the fire source storage unit 2 as close as possible to the plate 9, and measure the temperature of the surface of the plate 9 for 10 minutes. (6) Check the temperature difference due to the distance between the fire source storage section 2 and the plate 9.

[0046] The test results shown in Figures 16 to 19 show that the temperature of the surface of plate 9 decreases when the fire source storage section 2 is moved away from the main body frame section side ventilation port 12 and the heat retention section side ventilation port 17, and the temperature of the surface of plate 9 increases when the fire source storage section 2 is moved closer to the main body frame section side ventilation port 12 and the heat retention section side ventilation port 17. This proves that the temperature of the surface of plate 9 can be adjusted by sliding the fire source storage section 2 closer or farther as described above.

[0047] <Actions and Effects Obtained by the Present Embodiment> According to this embodiment having the above configuration, a heat retention section 7 is provided on one of the long side outer surfaces 10 of the main body frame section 4, and a heat conduction means is provided between one of the long side outer surfaces 10 of the main body frame section 4 and the heat retention section 7, which can conduct heat generated by the fire source in the fire source storage section 2 to the heat retention section 7.The heat conducted by the heat conduction means keeps the heat retention section 7 warm, and by placing heated food ingredients on the heat retention section 7, the food ingredients can be kept warm.

[0048] Furthermore, according to this embodiment, the heat conduction means comprises a main body frame side vent 12 provided on any one of the long side outer surfaces 10 of the main body frame portion 4 to allow heat to pass through, and a heat retention portion side vent 17 provided at the end of the heat retention portion 7, and the main body frame side vent 12 and the heat retention portion side vent 17 are fitted together to guide heat to the heat retention portion 7, thereby keeping the heat of the heat retention portion 7 conducted through the fitted main body frame side vent 12 and heat retention portion side vent 17, and by placing heated food ingredients on the heat retention portion 7, the food ingredients can be kept warm.

[0049] Furthermore, according to this embodiment, the fitting portion 13 is provided at the main body frame side ventilation port 12, and the heat retaining portion 7 is detachable from the fitting portion 13, so that the heat retaining portion 7 is detachable from the main body frame portion 4. As a result, the heat retaining portion 7 can be easily stored, cleaned, and carried.

[0050] Furthermore, according to this embodiment, the heat retention section 7 has an opening 19 on the upper surface 18, and by covering the opening 19 with the plate 9, a space 8 for accumulating heat is formed, whereby heat is accumulated in the space 8, and when heated food is placed on the plate 9, the food can be kept warm by the heat accumulated in the space 8. Furthermore, the plate 9 is easy to clean and portable.

[0051] Furthermore, according to this embodiment, the fire source storage section 2 is configured to slide so as to move closer to or farther away from the main body frame side ventilation opening 12. Therefore, by moving the fire source closer to or farther away from the main body frame side ventilation opening 12 to adjust the conduction of heat, it is possible to maintain a constant temperature of the heat retention section 7.

[0052] As described above, according to this embodiment, the heated ingredients can be maintained at a constant temperature, preventing the heated ingredients from burning and cooling, and making it possible to provide the ingredients in a warm state, as if they were freshly cooked, whenever the user wants to eat them.

[0053] The configurations described in the above embodiments can be modified as appropriate within the scope of the present invention, and are not limited to the configurations of the above embodiments.

[0054] For example, in the above embodiment, a configuration is adopted in which a main body frame portion side ventilation port 12 is provided on one of the long side outer surfaces 10 of the main body frame portion 4, and a heat-retaining section 7 is provided on the long side outer surface 10, but this is not limited to the above, and a configuration may be adopted in which a main body frame portion side ventilation port 12 is provided on one of the short side outer surfaces 11 of the main body frame portion 4, and a heat-retaining section 7 is provided on the short side outer surface 11. [Explanation of symbols]

[0055] 1. Barbecue grill 2...Fire source storage section 3...Gripping part 4…Main frame 5…Amibe 6…Legs 7…Heat insulation part 8…Space 9…Plate 10...Outer long side 11...Outer short side 12...Main frame side ventilation hole 13...Fitting part 14…Insertion section 15...Plate placement section 16...External surface 17…Insulation side vent 18...Top part 19...Opening surface 20…Main frame air vent 31...Fire source storage part holding member

Claims

1. a fire source storage section having an open top and storing a fire source; A main body frame portion that accommodates and supports the fire source accommodation portion; A leg portion connected to the main body frame portion; A heat retaining portion having a space for accumulating heat; In a barbecue stove equipped with The heat retaining portion is provided on any one of the outer surfaces of the main body frame portion, A barbecue grill characterized in that a heat conduction means is provided between any of the outer surfaces of the main body frame portion and the heat retention portion, capable of conducting heat generated by the fire source in the fire source storage portion to the heat retention portion.

2. The heat conducting means is A main body frame part-side vent hole is provided on any one of the outer surfaces of the main body frame part to pass the heat, and a heat retention part-side vent hole is provided on an end of the heat retention part, 2. The barbecue grill according to claim 1, wherein the main body frame side vent and the heat retaining part side vent are fitted together to guide the heat to the heat retaining part.

3. 3. The barbecue grill according to claim 2, wherein a fitting portion is provided at the ventilation opening on the main body frame portion side, and the heat retaining portion is detachably attached to the fitting portion.

4. The barbecue grill according to claim 1 or 2, characterized in that the heat retention section has an opening on its upper surface, and the opening is covered with a plate to form a space for accumulating the heat.

5. 4. The barbecue grill according to claim 2, wherein the fire source storage section slides to move closer to or further away from the main frame side ventilation opening.

6. A unit consisting of a heat retaining part that can be attached to a main body frame of a barbecue stove and a plate that can be closely attached to the heat retaining part, the heat retaining section includes an insertion section that can be fitted to any one of the outer surfaces of the main body frame section and a heat retaining section side vent that guides heat from the main body frame section to the inside, The plate is detachable from the heat retaining part, and a space is formed in the heat retaining part when the heat retaining part is attached. unit.

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