JPH01159536A - Convection type oven - Google Patents

Abstract

PURPOSE:To improve thermal efficiency and to form a whole in a compact manner by a method wherein a convection type oven to broil meat in an oven, combustion gas is discharged through a blast pipe to the interior of cooking chamber, and a combustion gas flow is mixed with a circulating flow from a fan. CONSTITUTION:A blast pipe 15 through which combustion gas can be discharged is situated in a cooking chamber K capable of containing a substance to be cooked, and a fan 14 is disposed in the vicinity of the blast pipe 15. Through mixture of a circulating air flow 12 from the fan 14 with a combustion gas flow 9 through the blast pipe 15, the mixture is circulated in the cooking chamber K by convection. Namely, in a convection type oven CO, combustion gas generated in a combustion chamber 10 is discharged through the blast pipe 15 directly to the interior of the cooking chamber K. Besides, the combustion gas flow 9 is mixed with the circulating flow 12 generated by rotation of the fan 14, and the mixture is uniformly circulated in the cooking chamber K by convection. This constitution prevents the occurrence of unevenness in temperature in the cooking chamber K, and enables execution of heating in an excellent cooking state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an improvement in a convection oven used for grilling meat, hamburgers, etc. in the oven.

(Prior art and its problems) Conventionally, an oven has a box-shaped storage where meat, hamburgers, etc. can be stored and grilled, etc., and a combustion chamber of a burner is formed on the bottom side of the storage. The structure is such that the combustion gas combusted at the bottom is circulated around the outside of the storage to heat the storage and grill meat, hamburgers, etc. inside the storage.

In such conventional ovens, the combustion gas is circulated outside the inner wall of the storage, so the heat of the combustion gas tends to escape to the outside, resulting in poor thermal efficiency. It is necessary to form a gas path for circulating the combustion gas, which poses the problem of increasing the overall size.

(Means for Solving the Problems) The present invention has been devised in view of the above-mentioned conventional problems, and aims to provide an opening that improves thermal efficiency and can be formed compactly. The gist is that a hot air pipe capable of blowing combustion gas is installed in a refrigerator that can store food to be cooked, and a fan is installed near the hot air pipe, and the circulating air flow from the fan and the hot air flow from the hot air pipe are arranged. The structure is such that the combustion gas flow is mixed and circulated within the refrigerator.

(Function) In the present invention, a hot air pipe is arranged in the refrigerator which can store the food to be cooked, and the combustion gas of the burner is blown directly into the refrigerator from this hot air pipe. By arranging the fan near the hot air pipe, the circulating air flow blown out from the fan and the combustion gas flow from the hot air pipe are mixed, and the circulating air flow heats the food inside the refrigerator. Since the combustion gas is circulated in a convection manner, the combustion gas reaches the inside of the refrigerator evenly.1. The entire interior of the refrigerator can be heated evenly, and since heating is not done from the outside like in the past, the heat of the combustion gas is used directly and efficiently for cooking, improving thermal efficiency. Moreover,
Since the hot air pipe and the fan are arranged inside the refrigerator, the whole can be made compact, and the whole can be made smaller and lighter.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

Fig. 1 shows a side sectional view of the convection type open, Fig. 2 shows a sectional view taken along line A-A in Fig. 1, and Fig. 3 shows a sectional view taken along line B-B in Fig. 1.
A line sectional view is shown, and FIG. 4 is an enlarged perspective view of the main parts of the hot air pipe and fan.

In the figure, the convection oven CO has a plurality of legs 8 erected at the bottom, and a box-shaped main body is integrated with the upper end of the legs 8. The main body has an inner wall that forms the cooking chamber K and an outer wall that covers the outer periphery of the inner wall, and a heat insulating material is interposed between the inner wall and the outer wall to improve the thermal efficiency inside the cooking chamber. It is planned. A large amount of meat, hamburgers, etc. can be stored inside the cooking cabinet, and a door 3 that can be opened and closed in a double-fold pattern is installed on the front side. By holding the door 3 and pulling it forward, the door 3 can be opened and food such as meat can be placed inside the cooking chamber.

In this example, the inner rear wall 1 on the rear side that constitutes the inner wall of the refrigerator is
A motor 13 is disposed at the rear and outside of the motor 6, and a combustion chamber 10 is formed below the motor 13.
A plast combustion burner (forced combustion burner) is installed inside. The front end of the combustion chamber 10 penetrates the rear wall 16 of the cooking chamber and protrudes into the cooking chamber, and the rear wall 16 side of the cooking chamber is formed into a frame shape as shown in FIG. A hot air pipe 15 is arranged, and the front end of the combustion chamber 10 is communicated with the hot air pipe 15.

The hot air pipe 15 is made of a rectangular pipe made of stainless steel, for example, and has a large number of blowing holes directed outward on its outer circumferential surface, so that when the burner burns in the combustion chamber 10, The combustion gas passes through this hot air pipe 15 and is blown out from the blow-off holes on the outer periphery in the vertical and horizontal directions. Therefore, the combustion gas flow 9 is blown directly into the cooking cabinet.

Further, in this example, a sirocco fan 14 is disposed at the center of the framework-shaped hot air pipe 15, and this sirocco fan 14 is connected to the aforementioned external motor 13 and rotated by the drive of the motor 13. When the fan 14 is rotated, the circulating air flow 12 flows out from the fan 14 to generate convection inside the cooking chamber, and the suction hole 14a formed in the center of the fan 14
The circulating air flow inside the cooking chamber can be sucked in and the circulating air flow 12 can be blown out around the outside of the fan 14.

Further, a fan cover 7 that covers the fan is disposed on the front side of the fan 14, and side current plates 5, 5 are provided on both sides of the fan cover 7 along the inner side of the inner side wall 22 in a communicating manner. A plurality of horizontal blow-off slits 5a are formed in the vertical direction on this side rectifying plate 5, 5.
The circulating air flow 12 from the fan 14 described above passes through the fan cover 7, and is blown out into the cooking chamber through the Suita slits 5a of the side rectifier plates 5, 5, and is then circulated.

Further, a grease filter 6 is disposed in front of the fan cover 7, and the fan cover 7 and the fan 14 are hidden by this grease filter 6. The fan 14 passes through the central hole 7a formed in the fan cover 7.
be sucked into. Therefore, the grease filter 6 effectively removes dust and the like from the circulating air flow 12 during cooking when it is sucked into the fan 14.

Further, an exhaust passage 26 is formed between the internal upper wall 24 that constitutes the upper side of the internal internal wall described above and the outer wall upper surface 18.
The gas inside is discharged into the cooking chamber through an internal exhaust port 23 formed in the internal upper wall 24 and through an exhaust port 19 opened on the outer wall upper surface 18 side.

Further, an operation box 2 is installed above the front side of the upper surface 19 of the outer wall, and electricity is supplied to this operation box 2 via a power supply hood 1 to control the drive of the fan 14 and the temperature inside the cooking cabinet. etc. can be done.

In the convection oven CO of this example configured in this way, the combustion gas generated in the combustion chamber 10 is transferred to the hot air pipe 15.
The blown combustion gas flow 9 is directly blown into the cooking chamber through the fan 14, and the blown combustion gas flow 9 mixes with the circulating air flow 12 generated by the rotation of the fan 14, and is evenly convected inside the cooking chamber by riding on the circulating air flow 12. Therefore, there is no inflow of cold air etc. from the outside, and the inside of the cooking chamber can be efficiently heated by the heat of the combustion gas flow 9 to cook the meat, etc. inside, and cooking can be carried out due to good convection. Because of this, there is no unevenness in the temperature inside the cooking chamber, and the cooking condition is good.

Further, since the structure is such that the combustion gas flow 9 is directly convected into the cooking chamber, high-load combustion is possible, and rapid cooking, etc. can be made possible.

(Effects of the Invention) The convection type opener of the present invention includes a hot air pipe that can blow out combustion gas in a refrigerator that can store food to be cooked, a fan that is arranged near the hot air pipe, and a fan that can blow out combustion gas. By having a configuration in which the circulating air flow from the hot air pipe and the combustion gas flow from the hot air pipe are mixed and circulated and convected into the refrigerator, the combustion gas is introduced directly into the refrigerator via the hot air pipe to improve thermal efficiency. In addition, the combustion gas flow can be distributed evenly throughout the interior of the refrigerator through the fan, making it difficult to cause temperature unevenness inside the refrigerator.
Thermal efficiency is improved and the cooking function is improved.

In addition, since it is configured to exhaust combustion gas directly into the refrigerator,
It also has the additional effect that the entire oven can be made compact.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a side sectional view of a convection oven, and FIG. 2 is a sectional view taken along line A--A in FIG. 1, showing a front sectional view. Further, FIG. 3 is a sectional view taken along the line BB in FIG. 1, and shows a plane cross section. FIG. 4 is a perspective view of essential parts showing the arrangement of hot air pipes and fans. CO...Convection type open K...Cooking cabinet 5...
Side current plate 5a...Blowout slit 6...Grease filter 7...Fan cover 13...Motor 14...Fan 15...Hot air pipe
26... Exhaust path patent applicant Comet Kato Co., Ltd. Agent Yoshihisa Shimizu, patent attorney Figure 2 CO... Convection oven K... Cooking cabinet 5...
Side current plate 5a...Blowout slit 6...Grease filter 7...Fan cover 13...Motor 14...Fan 15...Hot air pipe
26...Exhaust passage Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] A hot air pipe capable of blowing out combustion gas is arranged in a refrigerator that can store food to be cooked, and a fan is arranged near the hot air pipe, and a circulating air flow from the fan and a combustion gas flow from the hot air pipe are arranged. A convection oven characterized by having a configuration in which the mixture is circulated and convected within the oven.