JP5236355B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove, and more particularly to a gas stove that can improve the combustion efficiency of fuel gas and suppress the generation of carbon monoxide.

  The gas stove for business use used as kitchen equipment is for placing burner parts, pans, etc. consisting of castings in which multiple flame holes from which flames are ejected are arranged so that large thermal power can be obtained. Have five virtues. In the case of a gas stove used alone, the burner portion is accommodated and held in the lower frame.

  When the fuel gas is burned in the gas stove, air (primary air) is supplied together with the fuel gas such as propane gas and city gas to the burner portion of the gas stove. Further, when the gas is burned, air (secondary air) around the burner portion, particularly around the flame hole, is also used for burning the fuel gas, and becomes a powerful heating power to increase the combustion efficiency. If the path from the outside of the gas stove to the flame hole provided in the burner part is more open, more air can easily flow in, and further improvement in combustion efficiency can be realized. Since the fuel gas burns completely, the generation of carbon monoxide can be avoided as much as possible. In addition, exhaust of carbon dioxide or the like generated by combustion proceeds.

  Therefore, improvement of combustion efficiency and thermal power control has been attempted by improving the five virtues attached to the gas stove. For example, there has been proposed a gas stove virtues in which a gorgeous ring is provided on a ring-shaped support body provided with a spiral ridge, and the spiral ridge of the ring-shaped support body is slidably engaged with a heel support (Patent Literature). 1). Moreover, while improving the shape of the five virtue claws and the frame placed on the top plate of the gas stove, the five virtues of the gas stove have been proposed in which the strength and strength of the virtue claws and the frame are punched together (see Patent Document 2). .

  Both of the five virtue structures disclosed in both patent documents are for home use, and do not necessarily correspond to the use of handling a large pan for a kitchen. In particular, as a gas stove for business use that has been used for a long time with a load of several to tens of kg applied to the five virtues, it is pointed out that the durability is insufficient.

For this reason, in order to further improve the combustion efficiency as a gas stove for business use, not only improving the structure of the five virtues connected to the gas stove, but also the burner part and the lower frame part that accommodates the burner part in the gas stove There was a need to improve.
Japanese Utility Model Publication No. 61-46325 Japanese Patent Laid-Open No. 2001-4154

  The present invention has been made in view of the above points, and improved the structure of the five virtues connected to the gas stove in order to further improve the combustion efficiency of the fuel gas while maintaining the durability of the gas stove used for business purposes alone. In addition, the burner part and the lower frame part that accommodates the burner part are also provided to provide an improved gas stove.

The invention of claim 1 comprises an annular tube portion connected to the gas supply tube portion, a plurality of flame holes for ejecting a flame on the upper surface of the annular tube portion, and a five virtue portion outside the annular tube portion. In the gas stove having a burner portion and a lower frame portion that accommodates the burner portion, the five virtue portions have a plurality of main body members, and the main body member includes a claw portion and a leg portion that support the bottom portion of the pan member, The length of the claw portion is 0.9 to 1.1 times the height of the annular tube portion, and the flame hole is a claw portion flame hole located at the shortest position from the claw portion and the claw portion flame. It consists of a line flame hole lined up in the annular pipe part excluding the hole, and the distance between the claw part and the claw part flame hole is at least 10 mm or more, and the lower frame part accommodates the burner part A window portion that is formed on a side surface of the housing portion and takes air into the housing portion, and an opening at the upper end of the housing portion. An upper piece portion, and the window portion of the lower frame portion is formed to protrude outward from the side surface of the housing portion in the vicinity where the five virtue portions contact the bottom surface portion of the housing portion, According to the gas stove, the upper piece is omitted from the opening extending from the window toward the upper end of the housing.

The invention according to claim 2 relates to the gas stove according to claim 1, wherein the diameter of the claw part flame hole is 80/100 to 95/100 of the diameter of the row flame hole.

According to the gas stove according to the invention of claim 1 , the annular pipe part connected to the gas supply pipe part, the plurality of flame holes for ejecting flame on the upper surface of the annular pipe part, and the five virtue parts outside the annular pipe part A gas stove including a burner portion and a lower frame portion that accommodates the burner portion, wherein the five virtue portions have a plurality of main body members, and the main body member has a claw portion and a leg for supporting the bottom portion of the pan member. The claw part is 0.9 to 1.1 times the height of the annular tube part, and the flame hole is a claw part flame hole located at the shortest position from the claw part. It consists of a lined flame hole lined up in the annular tube part excluding the claw part flame hole, the distance between the claw part and the claw part flame hole is at least 10 mm, and the lower frame part is the burner part A housing portion for housing air, a window portion that is formed on a side surface of the housing portion and takes air into the housing portion, and An upper piece provided in an opening at the upper end of the container, and the window portion of the lower frame portion is arranged on the outside of the lower frame portion from the side surface of the accommodating portion in the vicinity where the five virtue portions contact the bottom surface portion of the accommodating portion. Since the upper piece is omitted from the opening extending from the window portion to the upper end of the housing portion, the durability of the burner portion in a gas stove used for business purposes alone is maintained. However, the structure of the five virtues connected to the gas stove can be improved, the fuel gas combustion efficiency can be improved, and the cause of incomplete combustion can be further reduced. In addition, with the improvement of the structure of the lower frame part of the gas stove used for business purposes, the secondary air can be easily flowed into the vicinity of the virtually part of the burner part, and the exhaust efficiency is improved and the combustion of the fuel gas Efficiency can be further improved.

According to the gas stove according to the invention of claim 2, in the invention of claim 1 , since the diameter of the claw part flame hole is 80/100 to 95/100 of the diameter of the row flame hole, the claw part The flame ejected from the flame hole can be made smaller than the others, the amount of secondary air required for the combustion of the fuel gas can be relatively reduced, and the cause of incomplete combustion can be further suppressed.

The present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a gas stove of the first embodiment, FIG. 2 is an overall perspective view of the burner portion of the first embodiment, FIG. 3 is a main side view of the burner portion of the first embodiment, and FIG. FIG. 5 is an overall perspective view of the lower frame portion of the first embodiment, and FIG. 6 is a main top view when the burner portion is accommodated in the lower frame portion of the first embodiment. 7 is a perspective view of the burner portion of the second embodiment, FIG. 8 is a side view of the burner portion of the second embodiment, FIG. 9 is an overall perspective view of the lower frame portion of the second embodiment, and FIG. 10 is the second embodiment. It is a principal top view at the time of accommodating the burner part in the lower frame part of an example.

  The gas stove illustrated and described below is a commercial kitchen appliance mainly installed alone. A gas stove 1A according to the first embodiment of FIG. 1 includes a burner unit 10 that heats cooking utensils such as a pan member, and a lower frame unit 50 that houses the burner unit 10. The illustrated burner portion 10 and lower frame portion 50 are both cast products.

  The burner part 10 includes an annular pipe part 20 and a virtuoso part 40 connected to the gas supply pipe part 15. A plurality of flame holes 30 are formed on the upper surface of the annular tube portion 20 to eject a flame generated by the combustion of the fuel gas. The illustrated five virtue part 40 has a plurality of main body members 41, and the main body member 41 includes a claw part 42 and a leg part 43. The lower frame portion 50 is provided with a window portion 60 and an upper piece portion 70.

  First, the structure of the burner unit 10 will be described with reference to FIG. The burner portion 10 includes double annular tube portions 20. This is because the gas stove 1A of the first embodiment is based on a design that obtains a thermal power corresponding to heating of a large pan member such as a small pan. The first annular pipe part 21 is connected to the first gas supply pipe part 15a, and the second annular pipe part 22 is connected to the second gas supply pipe part 15b. Appropriate cocks (not shown) for adjusting the supply amounts of gas and air (primary air) are attached to the pipe ends 16 of the first gas supply pipe part 15a and the second gas supply pipe part 15b, and a burner is provided via the cocks. The part is connected to a gas pipe.

  The five virtue parts 40 provided in the burner part 10 are composed of five columnar body members 41 provided on the outer side 23 of the first annular pipe part 21 at substantially equal intervals. Each main body member 41 includes a claw portion 42 that supports the bottom portion of the pan member and a leg portion 43 that is integrated therewith.

  In addition, since the 2nd annular pipe part 22 is also provided in the burner part 10, when the pan member is mounted, it is necessary to stabilize the inner side 24 part of the 1st annular pipe part 21. FIG. Or the pan member smaller than the diameter of a 1st annular pipe part may be used. Therefore, the inner virtues 45 including the five inner body members 46 are also formed. The second annular pipe portion 22 is connected to the inner side 24 of the first annular pipe portion 21 through the inner virtues 45.

  In the gas stove of the first embodiment, there are two types of flame holes 30 arranged in each annular pipe portion, and 105 pieces are laid in two rows in a circumferential manner on the upper surface 25 of the first annular pipe portion 21 of the burner portion 10. The first flame hole 31 and the upper surface 26 of the second annular pipe portion 22 are similarly composed of 43 second flame holes 36 laid in two circumferential rows. Of course, the number of flame holes is optimally determined by the size of the gas stove, the size of the flame hole itself, the desired thermal power, the type of fuel gas, and the like.

  Next, the structure of the main body member 41 will be described with reference to FIG. The main body member 41 of the first embodiment is connected to the outer side 23 of the first annular tube portion 21 by the side plate portion 49 and the leg plate portion 44 (see FIG. 4 described later). Further, since the side plate portion 49 and the leg plate portion 44 and the claw portion 42 and the leg portion 43 are integrated and connected to the first annular tube portion 21, the strength of the connection portion is increased. This is for supporting the weight of the burner part and the pan member to be placed and separating the main body member 41 from the flame hole.

  As can be seen from the drawing, the length of the claw portion 42 is a length H1 from the flame hole 30 (the first flame hole 31 in this example) to the tip 42e of the claw portion. Next, the height of the annular tube portion 20 is the height of the first annular tube portion 21 in the first embodiment. Specifically, the height H2 from the lower portion 29 of the first annular tube portion 21 to the first flame hole 31 is set.

  When the illustrated flat bottom pan member Pa is placed on the five virtue parts of the gas stove, the state is as if the lid is covered on the upper part of the burner part. In particular, in the case of the illustrated flat bottom pan, exhaust gas such as carbon dioxide generated by the combustion of the fuel gas is difficult to escape from above the burner portion, and is easily trapped between the burner portion and the lower portion of the pan member. At the same time, the amount of secondary air flowing toward the flame hole decreases, which causes a reduction in gas combustion efficiency (decrease in thermal power) and incomplete combustion.

  For this reason, if the nail | claw part of a five virtue part can be made longer than the nail | claw part of a conventional product, said problem can be avoided. Therefore, the length H1 of the claw portion is preferably 0.9 to 1.1 times the height H2 of the annular tube portion 20. In other words, the present embodiment is characterized in that the claw portion of the five virtue portions provided in the burner portion is made longer than the conventional product and the interval between the burner portion and the pan member is widened.

  In the burner portion of the gas stove of the first embodiment, the measured value is 41 mm for the length H1 of the claw portion and 41 mm for the height H2 of the annular tube portion. H1 is 1.0 times as long as H2. On the other hand, in the conventional burner portion, the length H1 of the claw portion is 33 mm, the height H2 of the annular tube portion is 39 mm, and H1 is about 0.85 times as long as H2. It is obvious that the length of the claw portion is relatively increased in this way. However, if the claw portion is made too long, the distance between the pan member and the flame hole naturally increases, and conversely, the thermal power received by the pan member weakens. Therefore, the length H1 of the claw portion is 0.9 to 1.1 times the height H2 of the annular tube portion in consideration of the size of the flame ejected from the burner portion in addition to the improvement from the conventional example. It is appropriate to prescribe.

  In the illustrated embodiment, the end 42f of the claw portion 42 is inclined toward the center side of the annular tube portion. This inclination is because the claw portion stably supports a round bottom pan member such as a Chinese wok as well as a flat bottom pan member. In addition, the inner virtues 45 (the five inner body members 46) of the first embodiment have a shorter length than the virtues 40 (the five columnar body members 41), and the pot such as the wok The member can be supported stably.

  The positional relationship between the claw part and the flame hole included in the main body member of the five virtue parts will be described with reference to FIG. FIG. 4A is a partial top view of the burner unit 10. There are two types of first flame holes 31 formed in the upper surface 25 of the first annular tube portion 21 depending on the distance from the claw portion 42. Of the first flame holes 31, the flame hole located at the shortest position from the claw part 42 is the claw part flame hole 32, and the other annularly arranged flame holes are the line flame holes 33.

  Here, the distance D between the claw part 42 and the claw part flame hole 32 is at least 10 mm or more. As can be seen from the figure, when the nail part and the nail part flame hole have a sufficient distance of 10 mm or more, when the gas stove is used, the secondary air As (thick solid line notation) is generated from the outside of the burner part. When entering the flame hole 32, the resistance received from the claw portion 42 (main body member 41) is reduced, and the inflow of secondary air becomes easier. In particular, it is effective when side plate portions and leg plate portions are provided to maintain the strength of the main body member. The distance D between the nail portion and the nail portion flame hole of the first embodiment is about 15 mm in actual measurement.

  On the other hand, FIG. 4B shows the upper surface of the burner portion of the conventional gas stove. According to the example of the figure, the shortest distance D0 between the five virtue parts 40 (main body member 41) and the flame hole 31 is about 6 mm. In the gas stove of the conventional example, since the main body member and the flame hole are close to each other, the secondary air As indicated by the thick solid line is resistant to reaching the flame hole. In FIG. 4B, the same reference numerals are used for members that are the same as those in FIG.

  As is clear from the comparison between the two, compared to the conventional gas stove, the supply of secondary air to the flame holes increases during the combustion of the fuel gas, improving the gas combustion efficiency (strengthening the thermal power) and not It leads to suppression of complete combustion. The distance D between the nail portion and the nail portion flame hole is defined in consideration of the weight of the burner portion (annular tube portion), the load applied to the five virtue portions 40 (main body member 41), and the like.

  In addition to the difference in inflow of secondary air from the comparison of FIGS. 4 (a) and 4 (b), in the burner part of the gas stove of the first embodiment, there is also a difference in the diameter for each flame hole. Exists. Specifically, among the first flame holes 31, the diameter φα of the claw flame holes 32 is 80/100 to 95/100 of the diameter φβ of the arranged flame holes 33. It is formed smaller than the diameter of the flame holes. Incidentally, in the first embodiment of the disclosure, the diameter of the claw flame holes is 2.5 mm, and the diameter of the arranged flame holes is 3.0 mm, which is approximately 84/100. A similar aperture difference is also provided in the flame hole of the second annular tube portion.

  As the diameter is reduced, the flame formed in the flame hole is naturally reduced. As a result, the flame ejected from the small-diameter flame hole (claw flame hole) is smaller than the other flame holes. Along with this, the amount of secondary air required for the combustion of the fuel gas is also relatively less than the combustion in the other flame holes. Therefore, the cause of incomplete combustion can be further suppressed.

  The structure of the lower frame part 50 which accommodates the burner part 10 disclosed in FIGS. The lower frame portion 50 of the first embodiment includes a bowl-shaped (bowl-shaped) storage portion 51, and a window portion 60 for taking air into the storage portion is provided on a side surface 52 of the storage portion 51. In the lower frame portion 50, the upper end side of the accommodating portion 51 is an opening 53. An edge 56 that borders the opening 53 is formed, and an upper piece 70 is provided on the edge 56. According to the lower frame portion 50 of the first embodiment, five window portions 60 are formed in accordance with the five virtue portions of the burner portion. Further, a total of 15 upper piece portions 70 are provided.

  The upper piece 70 is provided to reduce the height difference between the five virtue portions 40 (claw portions 42) of the burner portion 10 and the opening 53 (edge portion 56) of the lower frame portion 50. When the upper piece is omitted, for example, if a pan member larger than the circumference of the Gotoku part is placed on the burner part and the ingredients in the pan are mixed, the pan member is shaken and lacks balance. In some cases, the pan member may roll over. Conversely, when the opening 53 (edge 56) of the lower frame portion 50 is brought close to the pan member, exhaust is suppressed by the bottom portion and the lower frame portion of the pan member, resulting in a decrease in combustion efficiency and incomplete combustion. . In this way, the upper piece portion can reduce the height difference with respect to the shaking when using the pan member while maintaining an appropriate distance between the lower frame portion and the pan member, and helps to ensure safety of work in the kitchen. .

  A flat bottom surface portion 54 is formed in the lower portion of the housing portion 51. The burner portion is placed on the bottom surface portion 54 by the leg portions of the five virtue portions. The lower frame 50 is formed with a gas supply pipe opening 62 through which the gas supply pipe 15 (see the first gas supply pipe 15a and the second gas supply pipe 15b in FIG. 2) is passed. The gas supply pipe portion accommodated in the gas supply pipe opening 62 is protected by the gas supply pipe protection wall 57.

  The gas stove of the first embodiment has a burner portion composed of a double annular tube portion corresponding to heating of a large pan member. Therefore, naturally the amount of secondary air required when using the gas stove also increases. Therefore, in order to increase the amount of air that flows into the housing portion 51, five side ventilation portions 61 are provided on the side surface 52 of the housing portion together with the window portion 60. Furthermore, a bottom surface ventilation part 65 is provided in order to improve the air permeability of the bottom surface part 54 of the lower frame part. In particular, it is effective for supplying secondary air required in the flame hole of the second annular pipe portion. Reference numeral 66 denotes a rib that alleviates thermal deformation that occurs in the bottom surface portion 54 during use due to the provision of the bottom surface ventilation portion 65.

  As understood from FIG. 5, the window portion 60 of the lower frame portion 50 is provided in the vicinity where the five virtue portions 40 of the burner portion 10 come into contact with the bottom surface portion 54. The window portion 60 is formed so as to protrude from the side surface 52 of the accommodating portion 51 in the lower frame portion 50 to the outside of the lower frame portion 50. In this embodiment, a window frame protruding portion 55 is provided on the side surface 52 of the accommodating portion 51, and a window portion 60 is formed on the window frame protruding portion 55 so as to protrude outward from the lower frame portion. By providing the window frame protruding portion 55, the bottom surface portion is extended outward, and an expanded bottom surface portion 58 is formed. As described above with reference to FIG. 1, the five virtue parts (leg parts) of the burner part come into contact with the expanded bottom surface part 58. In addition, the upper piece is omitted from the opening 53 extending from the window 60 to the upper end side of the housing 51. Reference numeral 59 in the figure denotes a lower frame leg portion provided on the window frame protruding portion 55.

  The structure and operation of the lower frame portion 50 near the window 60 will be described with reference to the top view of FIG. 6 together with FIG. Since the lower frame part 50 of the embodiment has a bowl-shaped (bowl-shaped) storage part 51, the bottom part 50 becomes narrower toward the bottom part. From this, the virtue part (leg part) vicinity of a burner part becomes a dense space, and the air | flow circulation property tends to fall. Here, since the window frame protruding portion 55 projects outward from the lower frame portion, the extended bottom surface portion 58 secures the distance from the inner surface 51s of the housing portion of the lower frame portion to the five virtue portions (main body members) of the burner portion. can do. In the lower frame portion of the first embodiment, the window frame protruding portion 55 (particularly the protruding portion inner wall surface 55s) in which the window portion 60 is formed is dug at least 6 mm more than the accommodating portion inner surface 51s of the lower frame portion.

  As can be understood from the flow path of the secondary air As (indicated by bold arrows) flowing into the inside of the lower frame portion, the air that has passed through the window portion 60 proceeds directly above the extended bottom surface portion 58, and the five virtue portions (main body of the burner portion) The first annular tube portion 21 can be reached from the left and right of the member 41). By providing the window frame projecting portion 55 and projecting from the accommodating portion inner surface 51 s, the space in the vicinity of the five virtue portions (main body member) of the burner portion is expanded, and the degree of freedom of secondary air flow is increased.

  Also, the exhaust E (thick line arrow notation) generated by using the gas stove is prevented from rising by the bottom of the pan member (not shown), and the lower frame portion through the opening portion 53 (edge portion 56) from the housing portion 51 housing the burner portion. 50 flows outside. At this time, since the upper piece 70 is omitted from the opening 53 (edge 56) immediately above the window 60, the resistance when the exhaust E passes is reduced and the exhaust efficiency is improved. Therefore, the exhaust gas hardly accumulates in the accommodating portion, and the risk of incomplete combustion can be further reduced. According to the lower frame portion of the conventional gas stove equivalent to the gas stove of the first embodiment, a total of 19 upper pieces are provided in the opening (edge).

  Subsequently, the gas stove 1B of the second embodiment will be disclosed and described in FIGS. In each figure, the same code | symbol is used for the location which is common in 1st Example. 7 and 8 show the burner unit 10x included in the gas stove 1B of the second embodiment. The gas stove 1B of the second embodiment is smaller than the gas stove 1A of the first embodiment. Therefore, since the thermal power is reduced, the annular pipe portion 20 is single. Therefore, the number of gas supply pipe sections 15 is also one.

  The five virtue parts 40 are provided outside the annular pipe part 20. The five virtue parts 40 have five main body members 41, each of which includes a claw part 42 and a leg part 43. The main body member 41 is connected at a distance from the annular tube portion 20 via the leg plate portion 44. A plurality of flame holes 30 for ejecting a flame are provided on the upper surface of the annular tube portion 20. In this embodiment, 40 flame holes are formed. In addition, an inner moral part 45 composed of five inner body members 46 is also formed in the annular pipe part 20. In the burner portion 10x of the second embodiment, a stabilizing ring portion 14 is provided to prevent thermal deformation of the main body member 41 and stably hold the main body members.

  As can be understood from FIG. 8 showing a part of the stability ring portion 14 omitted, also in the burner portion 10x of the second embodiment, the length H1 of the claw portion 42 is 0 of the height H2 of the annular tube portion 20. .9 to 1.1 times as long. According to the measured values, the length H1 of the claw portion is 26 mm, and the height H2 of the annular tube portion is 26 mm. Therefore, H1 is 1.0 times as long as H2. In addition, the burner part 10x also inclines the virtue part 40 (claw part 42) toward the inner side from the outer side of the annular pipe part. This is also for stably supporting the bottom of the round bottom pan member.

  FIG. 9 shows a lower frame portion 50x that accommodates the above-described burner portion 10x in the gas stove of the second embodiment. The burner portion 10x is accommodated in a bowl-shaped (bowl-shaped) accommodating portion 51 of the lower frame portion 50x. A window portion 60 for taking in air into the inside of the housing portion is provided on the side surface of the housing portion 51. The upper end side of the accommodating part 51 becomes the opening part 53, the edge part 56 which borders the opening part 53 is formed, and the upper piece part 70 is provided here. According to the lower frame portion 50x of the second embodiment, five window portions 60 are formed in accordance with the five virtue portions of the burner portion. Further, a total of ten upper piece portions 70 are provided.

  The window portion 60 of the lower frame portion 50x of the second embodiment is also provided in the vicinity where the five virtue portions 40 of the burner portion 10x contact the bottom surface portion 54. The window portion 60 is formed so as to protrude outward from the side surface 52 of the accommodating portion 51 in the lower frame portion 50x. Similarly, a window frame protruding portion 55 is provided on the side surface 52 of the accommodating portion 51. Also in the lower frame portion of the second embodiment, the window frame protruding portion 55 (particularly the protruding portion inner wall surface 55s) in which the window portion 60 is formed is dug at least 6 mm more than the accommodating portion inner surface 51s of the lower frame portion. . The upper piece of the opening 53 extending from the window 60 to the upper end side of the housing 51 is omitted. In the case of the lower frame portion 50x, the amount of secondary air required is small because the burner portion 10x itself is small. However, the vicinity of the gas supply pipe protective wall 57 is susceptible to interference from the gas supply pipe 15 and the main body member 41 and the like, and therefore a side ventilation part 61 is provided to assist the inflow of air into the accommodating part 51. .

  FIG. 10 is a top view of the main part of the gas stove 1B of the second embodiment. Similarly, there are two types of flame holes 30 formed on the upper surface of the annular tube portion 20 of the burner portion 10 x depending on the distance from the claw portion 42. Of the flame holes 30, the flame hole located at the shortest position from the claw part 42 is a claw part flame hole 32, and the other annularly arranged flame holes are lined flame holes 33. The diameter of the claw part flame hole 32 is formed smaller than the diameter of the arranged flame hole so that the diameter of the claw part flame hole 32 is 80/100 to 95/100 of the diameter of the arranged flame hole 33. Incidentally, in the case of the second embodiment of the disclosure, the diameter of the claw flame holes is 2.5 mm, and the diameter of the row flame holes is 3.0 mm, which is approximately 84/100. Regarding the positional relationship between the claw part and the flame hole included in the main body member of the five virtue parts, the distance D between the claw part and the claw part flame hole of the second embodiment is about 15 mm in actual measurement. Therefore, it is satisfied that the distance D between the claw part 42 and the claw part flame hole 32 is at least 10 mm or more.

  Also in the gas stove 1B of the second embodiment, the burner portion 10x and the lower frame portion 50x have the same functions as the burner portion and the lower frame portion in the gas stove of the first embodiment. Accordingly, the actions and effects disclosed in the gas stove of the first embodiment can be exhibited in the same manner. The burner part and the lower frame part in the gas stove of the present invention are not limited to the structures disclosed as the first and second embodiments, and can be optimally changed in accordance with the spirit of the invention. For example, the annular tube portion of the burner portion can be expanded to triple or quadruple so that it can cope with heating of a larger pan member. In addition, the number of body members of the Gotoku part, the shape of the claws and legs, etc., as well as the size and shape of the window part of the lower frame part, etc. are appropriately adjusted according to the usage status, durable weight, etc. be able to.

It is a perspective view which shows the gas stove of 1st Example. It is a whole perspective view of the burner part of 1st Example. It is a principal side view of the burner part of 1st Example. It is a main top view of a 1st example and a conventional burner part. It is a whole perspective view of the lower frame part of the 1st example. It is a principal top view at the time of accommodating the burner part in the lower frame part of 1st Example. It is a perspective view of the burner part of 2nd Example. It is a side view of the burner part of 2nd Example. It is a whole perspective view of the lower frame part of 2nd Example. It is a principal top view at the time of accommodating the burner part in the lower frame part of 2nd Example.

1A, 1B Gas stove 10, 10x Burner part 15 Gas supply pipe part 20 Annular pipe part 30 Flame hole 32 Claw part flame hole 33 Row flame hole 40 Five virtue parts 41 Main body member 42 Claw part 43 Leg part 50, 50x Lower frame part 51 Housing portion 52 Side surface of housing portion 53 Opening portion 54 Bottom surface portion 60 Window portion 70 Upper piece portion H1 Length of claw portion H2 Height of annular tube portion D Distance between claw portion and nail portion flame hole

Claims (2)

An annular pipe part (20) connected to the gas supply pipe part (15), a plurality of flame holes (30) for injecting flame onto the upper surface of the annular pipe part, and a virtuoso part (40 ) With a burner section (10),
In a gas stove having a lower frame part (50) for accommodating the burner part,
The five virtue parts have a plurality of main body members (41), and the main body member comprises a claw part (42) and a leg part (43) for supporting the bottom part of the pan member, and the length (H1) of the claw part is A length of 0.9 to 1.1 times the height (H2) of the annular tube portion;
The flame hole includes a claw part flame hole (32) located at the shortest position from the claw part and a row flame hole (33) arranged in the annular pipe part excluding the claw part flame hole. The distance (D) with the nail part flame hole is at least 10 mm or more,
The lower frame part includes an accommodating part (51) for accommodating the burner part, a window part (60) formed on a side surface (52) of the accommodating part for taking air into the accommodating part, and an opening at the upper end of the accommodating part An upper piece (70) provided in the portion (53),
The window portion of the lower frame portion is formed to project outward from the side surface of the housing portion in the vicinity where the five virtue portions contact the bottom surface portion (54) of the housing portion. The gas stove characterized in that the upper piece is omitted in the opening extending to the upper end side of the housing. 2. The gas stove according to claim 1, wherein a diameter of the claw part flame hole is 80/100 to 95/100 of a diameter of the row flame hole.

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