JPS6346045Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat equalizing device for a cooking plate heated with an infrared burner.

BACKGROUND ART Conventionally, a cooking device that heats a cooking board from below with an infrared burner to cook food on the cooking board has been used as a commercial cooking device because of its high thermal efficiency. Unlike heating equipment that uses Bunsen burners, which can uniformly heat the entire cooking plate, cooking appliances that use such infrared burners as a heating source have a temperature in the center of the cooking plate that is lower than that of the surrounding area. It has a temperature distribution characteristic that becomes high due to the heating temperature, and has the disadvantage that it is not possible to uniformly heat the entire cooking plate.

This idea was made to eliminate the drawbacks of cooking appliances that use infrared burners as a heat source. and the total opening area of the exhaust holes of the exhaust stack is increased in the central part,
In addition to making the peripheral part smaller, a heat absorbing body with good thermal conductivity is fixed to the lower surface of the cooking plate close to the exhaust suction port of the exhaust stack, and the central part of the heat absorbing body is recessed to increase the space between it and the cooking plate. By forming a gap between the plates, it is possible to uniformly heat the entire cooking plate.

Preferred embodiments of this invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a cooking plate made of a metal plate having a flat upper surface and an uneven lower surface, and is disposed on the upper part of a main body 2 of the cooking appliance. Reference numeral 3 denotes an infrared burner disposed at the bottom of the cooking plate 1, consisting of rod-shaped burners extending in the depth direction of the cooking plate 1, and arranged in parallel at appropriate intervals in accordance with the size of the cooking plate 1. be done. As is conventionally known, the infrared burner 3 has a radiant heat emitting plate 5 made of a wire mesh located close to the upper side of the burner nozzle 4.
A heat equalizing plate 6 made of a metal plate, for example, punched metal, with a large number of small holes is further provided above it.

Reference numeral 7 denotes an exhaust pipe disposed between the infrared burners 3 arranged in parallel, and extends along the infrared burners 3. As shown in FIGS. 3 and 4, the exhaust pipe 7 has a rectangular tube shape with its upper half narrowed into a roof shape, and is provided with an exhaust suction port 8 extending in the longitudinal direction at the center of the upper surface. An exhaust hole plate 9 is attached approximately at the center of the exhaust pipe 7 so as to divide the inside of the exhaust pipe 7 into upper and lower sections.

The exhaust hole plate 9 has a large number of exhaust holes 10, but as shown in FIG. 4, the exhaust holes 10 near the center of the exhaust pipe 7 have a large diameter and are large in number. , the exhaust hole 10 near the periphery has a small hole diameter,
And there are few. As a result, more combustion gas is sucked in and discharged from the center than from the periphery.
Since more exhaust air is emitted from the center where the temperature distribution is high, the temperature rise in the center is substantially suppressed. An exhaust pipe 11 is connected to the center of the bottom of the exhaust pipe 7 , and the exhaust pipe 11 communicates with an exhaust passage 12 formed in the main body 2 . The exhaust passage 12 is provided with an exhaust adjustment plate 13 that can increase or decrease the opening area of the passage. In addition, the exhaust hole 10 may not only have an increased or decreased number of holes and a hole diameter, but may also be a single exhaust hole consisting of a large opening and a small opening. In short, it is sufficient if the total opening area is large at the center and small at the periphery, and the exhaust volume can be large at the center and small at the periphery.

The heat absorbing body 14 is attached to the bottom surface of the cooking plate 1 with the bolts 1 above the exhaust suction port 8 and partially blocking the exhaust suction port.
Fixed at 5. The heat absorber 14 is made of a metal with good thermal conductivity, such as copper, aluminum, etc.
As shown in the figure, the center is recessed to form a gap 16 when fixed to the cooking plate 1.

A heat absorber 14 disposed close to the exhaust suction port 8
The heat from the exhaust gas sucked into the exhaust suction port 8 is absorbed and conducted to the cooking plate 1. At this time, the center of the heat absorbing body 14 is not in contact with the cooking plate 1 due to the gap 16, so heat is not transferred to the center of the cooking plate 1, but only to the sides of the cooking plate 1. Become.

In this way, according to this invention, the cooking plate 1 can be heated at the center by increasing the amount of exhaust gas in the central part compared to the peripheral part, and by transmitting heat from the heat absorbing body to the side parts. This suppresses the temperature rise in the area, making it possible to obtain a uniform temperature distribution over the entire area.

[Brief explanation of the drawing]

Figure 1 is a plan view, Figure 2 is a vertical side view, Figure 3 is an enlarged vertical cross-sectional view of the main parts, Figure 4 is a perspective view of the exhaust stack, and Figure 5 is the main parts of the cooking plate and heat absorber. FIG. 1... Cooking board, 2... Main body, 3... Infrared burner, 4... Nozzle, 5... Radiant heat release plate, 6...
... Soaking plate, 7 ... Exhaust pipe, 8 ... Exhaust suction port, 9
...Exhaust hole plate, 10...Exhaust hole, 11...Exhaust pipe, 12...Exhaust passage, 13...Exhaust cooking plate, 1
4... Heat absorber, 15... Bolt, 16... Gap.

Claims (1)

[Scope of utility model registration request] An exhaust stack is disposed between the infrared burners arranged in parallel with intervals, and the total opening area of the exhaust holes of the exhaust stack is made larger in the center and smaller at the periphery. A heat absorbing body with good thermal conductivity is fixed to the lower surface of the cooking plate near the exhaust suction port, and the central part of the heat absorbing body is recessed to form a gap between it and the cooking plate. A cooking plate equalizing device heated with an infrared burner.