JPH029283Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the improvement of commercial gas furnaces used in cafeterias, restaurants, etc.

(Conventional technology) Unlike home-use gas furnaces, large commercial gas furnaces burn a large amount of gas, so they mix the gas ejected from the nozzle with the air sucked through the air holes. The mixing tube must be sufficiently long for this purpose, and in addition, an operating section such as a knob for adjusting the gas amount is usually provided at the base on the front side of the mixing tube for convenience of handling. For this reason,
Conventional large gas furnaces for commercial use usually have a long mixing tube that protrudes in front of the annular burner. (For example, Japanese Utility Model Application Publication No. 57-145901).

(Problem that the invention aims to solve) However, the cooking areas of cafeterias and restaurants often do not have enough space, and the long mixing pipe protruding from the front side of the annular burner obstructs the effective use of space. Not only that, but it was also a huge nuisance when cooking.

(Means for Solving the Problems) The present invention was completed in order to solve the problems of the conventional gas furnaces as described above, and consists of two gas stoves with the main operation part of the furnace on the front side. Mixing pipes consisting of mixing pipe sections are installed side by side across the center of the lower surface of the double annular burner, and the tip of one of the mixing pipe sections is connected to the back side of the large diameter burner chamber of the double annular burner. At the same time, the tip of the other mixing pipe section is connected to the front side of the small-diameter burner chamber of the double annular burner, and the operating section of the furnace main body is connected to the main body of the furnace through the notch of the metal frame that accommodates the furnace main body. It is characterized in that a shielding plate that protrudes outwardly and removably fits into the cutout portion covers the upper side of the operating portion.

(Embodiments) Next, the present invention will be described in detail with reference to embodiments shown in the drawings.

Reference numeral 1 denotes a double annular burner made of cast iron in which burner chambers 2 are arranged in double concentric circles, and the double annular burner 1 is provided with a pot receiving protrusion 3 on its upper surface.
Reference numeral 4 denotes a mixing pipe consisting of two mixing pipe parts 4a and 4b installed in parallel at a position crossing the center of the lower surface of the double annular burner 1, one of which is the mixing pipe part 4a.
The tip of the mixing pipe section 4b is connected to the back side of the large diameter burner chamber 2 of the double annular burner 1, and the tip of the other mixing pipe section 4b is connected to the front side of the small diameter burner chamber 2 of the double annular burner 1. . Further, the mixing pipe portion 4a and the mixing pipe portion 4b of the mixing pipe 4 are provided with a cock 5 and an air control valve 6 on their front sides to form an operating portion 7. Reference numeral 6 denotes a bowl-shaped metal frame that houses the furnace main body 8 constituted by the mixing tube 4 and the double annular burner 1;
The operating section 7 is inserted through the notch 10 provided in the metal frame 9.
is made to protrude outside the metal frame 9. Furthermore, a shielding plate 11 that covers the upper part of the operating section 7 from the notch 10 is removably fitted into the notch 10 of the metal frame 9. In addition, in the illustrated embodiment, the shielding plate 11 extends from the curved hanging part 11c facing the cutout part 10 to the upper part of the operating part 7, and has a slightly upward finger hook part 11b at the tip end of the eaves part 11a. It is assumed that it will become. Further, in the figure, 12 is a gas manifold, 13 is a leg of the furnace main body 8, and 14 is a leg of the metal frame 9.

With this structure, when each cock 5 of the operating section 7 is opened and gas is supplied, the gas is mixed with the air sucked through each air control valve 6 and into the mixing pipe section 4a of the mixing pipe 4 and the mixing pipe section. 4b and burned in the double annular burner 1 of the furnace main body 8 housed in the metal frame 9, which is the same as in a conventional gas furnace. Part 4
b is installed in a line across the center of the lower surface of the double annular burner 1, and one of the mixing pipe parts 4a
The tip of the double annular burner 1 has a large diameter burner chamber 2.
Since the mixing pipe section 4a is connected to the rear side of the operating section 7, there is no need to protrude the front side of the mixing pipe section 4a which is connected to the operating section 7 for a long time, and the gas and air are mixed uniformly to achieve proper combustion. It is something that can be done. Since the burner chamber 2 has a small diameter, the other mixing pipe section 4b connected to the front side of the small-diameter burner chamber 2 does not need to protrude long from the front side following the operating section 7. One of the mixing pipe portions 4a and the operating portion 7 can be aligned. As a result of the above, the operating portion 7 on the front side of the mixing tube 4 comes close to the double annular burner 1, but the operating portion 7 is separated from the notch 10 of the metal frame 9 that protrudes outward. The shielding plate 11 that covers the upper part of the operating section 7 blocks boiling over that occurs during use, so that the operating section 7 will not become dirty or clogged and its function will deteriorate.
The shielding plate 11, which is detachable from the metal frame 9, can be easily removed from the metal frame 9 and cleaned at any time.

(Effect of the invention) As is clear from the explanation of the above embodiments, the present invention reduces the amount of protrusion of the double annular burner toward the front side without reducing the length of the mixing tube necessary for proper mixing of gas and air. As a result, the space occupied by the gas stove in the cooking area can be reduced, and the operating section near the double annular burner is free from dirt and eye contact due to boiling over. There is no risk of clogging, and its practical value is extremely great as it solves the problems of conventional large gas furnaces for commercial use.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a plan view of the same. 1: double annular burner, 2: burner chamber, 4: mixing tube, 4a, 4b: mixing tube section, 7: operating section, 8: furnace main body, 9: metal frame, 10: notch, 11: shielding plate.

Claims (1)

[Scope of utility model registration request] The mixing tube 4, which consists of two mixing tube sections 4a and 4b with the operating section 7 of the furnace main body 8 on the front side, is installed side by side at a position crossing the center of the lower surface of the double annular burner 1, and one of the mixing tubes is The tip of the section 4a is connected to the back side of the large diameter burner chamber 2 of the double annular burner 1, and the tip of the other mixing pipe section 4b is connected to the front side of the small diameter burner chamber 2 of the double annular burner 1. Also,
The operating part 7 of the furnace main body 8 projects outside the metal frame 9 through a notch 10 of the metal frame 9 that houses the furnace main body 8, and a shielding plate is provided in the notch 10 to cover the upper part of the operating part 7. 11 is detachably fitted.