JPH02172420A - Continuous type oven for food - Google Patents

Abstract

PURPOSE:To prevent reduction of a life for a heater due to the drop of gravy, to almost prevent the occurrence of ignition, and sharply reduce the occurrence of fuming by a method wherein a food is contained in a bucket is inserted in an oven, and the support shafts of the bucket are arranged in parallel to each other, and the bucket is moved as it is rotated. CONSTITUTION:A food to be heated and cooked is held in a basket 1 and is pushed by means of a spiral conveyor 4. It is moved forward as it is rotated, and the food held in the basket 1 is heated and cooked by means of a heater 2 mounted thereabove. The basket is usually formed with a substance formed by welding a wire net or a copper wire and is opened and closed by means of a hinge, and taking in and out of the food are facilitated. The basket is placed on the conveyor or a guide rail through a support shaft, and taking of the food in and from the oven can be simplified. A using far infrared ray heater is, for example, a resistance heating type heater in which a heating wire is contained in a ceramic tube.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a continuous food oven for cooking food such as meat and vegetables.

``Prior art and its problems'' Conventionally used continuous food ovens include those that use a net conveyor as shown in Figures 2 and 3, or those that penetrate the food instead of the net conveyor. There is a system in which grilled skewers are supported by a moving chain conveyor or the like.

When cooking food, a liquid containing salt, etc. derived from moisture, oil, and seasonings is released from the food, so it is necessary to consider the arrangement of heaters. That is, in order to heat the food uniformly, it is preferable to install heaters on both the upper and lower sides, but in order to avoid staining the heaters with the liquid mentioned above, in the case of the example shown in Figure 2, the heaters are installed on both the upper and lower sides. The heater directly below the moving part is excluded, and in the example shown in Figure 3, a reflective plate is installed above the heater to prevent contamination by liquid, and another reflective plate installed below the heater reflects the heat rays. It is designed to reflect upward and heat the food moving above. However, in these continuous food ovens, the heating toward the bottom of the center may be weak (or the heating on the lower side may be weaker due to the lower reflector, especially in the area where the heat rays are blocked by the reflector). In addition to uneven heating, there was a problem in that fats and oils in the juice that fell to the bottom could be ignited by the heater installed on the bottom, resulting in burning or smoke.

Continuous food ovens that use skewers are also equipped with a rotating mechanism to ensure even heating, but it is essential to pierce the skewers through the food. In addition to requiring time and effort, there is also the problem of a decrease in product value due to damage to the food.

"Structure of the Invention" The present invention has been made to solve the above-mentioned problems, and in the continuous food oven of the present invention, a heating element is disposed above in a casing having an insertion opening and an extraction opening for heated objects. A basket having a heating means and a means for moving an object to be heated, the object to be heated having a support shaft in which food is stored,
The support shafts of the baskets inserted into the oven are arranged generally parallel to each other, and the baskets are moved while rotating to heat and cook the object.

In a preferred embodiment of the invention, a plurality of baskets are attached to a series of support shafts, and the support shafts between the baskets are supported by guide rails.

In another preferred embodiment of the invention, the heating means is a resistance electric heater or a gas burner.

In a preferred embodiment of the present invention, a heater with enhanced far-infrared radiation is used.

In another preferred embodiment of the present invention, the diameter of the support shaft is 1/4 or more of the representative diameter of the basket, or a ring having 1/4 or more of the representative diameter of the basket is attached to the support shaft, and the support shaft or ring is attached to the support shaft. It is designed to rotate and move on a guide rail.

In another preferred embodiment of the invention, a series of support shafts are provided at the ends of the baskets and between the baskets if they are attached, leaving the interior of the baskets open.

Another preferred embodiment of the invention uses a basket with a flat cross-section containing the food product.

In another preferred embodiment of the invention, baskets of different shapes and/or dimensions can be used interchangeably, and the spacing between the heater and the object to be heated can be adjusted.

Hereinafter, the structure and effects of the continuous food oven of the present invention will be explained in more detail using examples of the present invention.

Rings 8 are attached to both ends of the support shaft of the basket used in the continuous food oven shown in FIG. 1, and the rings 8 are configured to roll on guide rails 5.

The function of this ring is to ensure the rotation of the basket even when the center of gravity of the food stored in the basket is offset from the axis of the support shaft. It is preferable that the outer diameter is 1/4 or more of the representative diameter in the cross section of the basket 1 in the direction perpendicular to the support axis. This effect can be obtained without using a ring (or by increasing the outer diameter of the support shaft).

As the heater used in the continuous food oven of the present invention, it is preferable to use a resistance heating electric heater or a gas burner, and it is further preferable to attach a reflector. Furthermore, it is more preferable to use a heater that enhances far-infrared radiation, since thick foods can be cooked with greater thermal efficiency (and without burning the surface too much).

[Embodiment] FIG. 1 is a cross-sectional view of an oven showing an embodiment of a continuous food oven according to the present invention. The food to be heated and cooked is held inside the basket 1, pushed by a spiral conveyor 4, and rotated forward, and the food held inside the basket 1 is heated and cooked by the heater 2 located above the spiral conveyor 4.

In this embodiment, a spiral conveyor is used as the drive device, but a wire or chain conveyor provided with a hook for hooking a support shaft, a gear conveyor, or the like may also be preferably used as the drive device. The guide rail 5 is a guide rail that receives the load of the object to be heated, and the guide rail provided in the center prevents the support shaft from deflecting due to the load and heat. Depending on the length, etc., it may not be provided, or an appropriate number may be provided.

4 to 7 show examples of baskets used in the continuous food oven of the present invention.

The basket is usually made of wire mesh or steel wire bonded together, and the basket shown in FIG. 4 can be opened and closed by a hinge, as shown in FIG. 5, and has a structure that allows food to be put in and taken out easily. In this example, a support shaft is provided so as to pass through the basket in the longitudinal direction, and the basket is held by this support shaft and at the same time is advanced by a drive device. The basket is configured to be placed on a conveyor or guide rail via this support shaft, and can be easily taken in and out of the oven. In the illustrated example, the support shaft passes through the inside of the basket, but depending on the shape and dimensions of the food to be stored inside the basket, the support shaft may be attached only to the outside of the basket. The shape may be flattened. Alternatively, the basket may have a polygonal cross section as shown in Figure 6 (in order to make it possible to cook a large amount of food, multiple baskets may be mounted on a series of support shafts as shown in Figure 7). It is also possible to attach.

When it is desired to heat and cook foods of various sizes in one continuous oven, baskets of various sizes and shapes can be exchanged, and furthermore, the distance between the support shaft and the heater in the oven can be adjusted. This makes it possible to heat and cook a wider variety of foods. Examples of far-infrared heaters that can be used include resistance heating type heaters in which an N heating wire is housed inside a ceramic tube, and the surface of the ceramic tube is coated with a far-infrared radiator such as ZrO□; In some cases, gold i+ is added to the combustion gas passage.
, Il, and those in which honeycomb-shaped ceramic plates are arranged are preferable examples.

As an example of the continuous food oven of the present invention, we prototyped one with the configuration shown in Figure 1, attached a ceramic far-infrared heater using electric resistance heating, and attempted to cook roast chicken. - It was confirmed that each wing could be baked uniformly and continuously in about 10 minutes, no ignition of oil and fat during cooking was observed, and smoke generation was significantly reduced.

[Effects of the Invention] With the continuous food oven of the present invention, food can be heated and cooked evenly by installing the heater only in the upper part of the oven, and the food can be heated and cooked evenly. There is no reduction in the life of the heater due to the falling of salt-containing juice, and furthermore, ignition can be almost prevented and smoke generation can be greatly reduced.

In addition, since the structure allows the basket containing food to be easily attached and detached, maintenance such as cleaning is easy, it lasts a long time, and it is also hygienic. Furthermore, by simply replacing the basket with a basket having a different shape and size, it is possible to provide the advantage of being able to heat and cook a wide variety of foods on the same machine. Furthermore, since the present invention uses a basket, the food can be cooked without damaging it (it does not require much effort and does not reduce the added value of the food, unlike when using a skewer).

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view showing one embodiment of a continuous food oven according to the present invention. In the figure, 1 is a basket, 2 is a heater, 3 is a reflective plate 4 is a spiral conveyor,
5 is a guide rail, 6 is a casing, 7 is a support shaft, and 8 is a ring. FIGS. 2 and 3 are cross-sectional views of a conventional continuous oven using an electric heater. In the figure, l is a net conveyor, 2 is a heater, 3 is a reflector, and 4 is a casing. 4 to 7 show examples of baskets provided with support shafts used in the continuous food oven of the present invention. In the figure, 1 is a steel wire, 2
is a hinge, 3 is a stopper, 4 is a support shaft, 5 is a gear, and 6 is a wire mesh. Figure Z trgJ ! Figure 3

Claims (9)

[Claims] (1) A continuous food oven for cooking a heated object, which has a heating means disposed above in a casing having an insertion port and an outlet for the heated object, and a means for moving the heated object, The object to be heated is a basket having a support shaft in which food is stored, and the support shafts of the basket inserted into the oven are arranged generally parallel to each other, and the basket moves while rotating. A continuous food oven characterized by: (2) The continuous food oven according to claim 1, wherein a plurality of baskets are attached to a series of support shafts, and the support shafts between the baskets are supported by guide rails. (3) The continuous food oven according to claim 1 or 2, wherein the heating means is a resistance heating electric heater or a gas burner. (4) A continuous food oven according to claim 3, which uses a heater that enhances far-infrared radiation. (5) In any one of claims 1 to 4, the diameter of the support shaft is 1/4 or more of the representative diameter of the basket, or a ring having 1/4 or more of the representative diameter of the basket is attached to the support shaft, A continuous food oven in which this support shaft or ring is rotated and moved on a guide rail. (6) A continuous food oven according to any one of claims 1 to 5, wherein a series of support shafts are provided between the ends of the basket and when a plurality of baskets are attached, and the inside of the basket is excluded. . (7) A continuous food oven according to any one of claims 1 to 6, which uses a basket having a flat cross section and containing food. (8) A continuous food oven according to any one of claims 1 to 7, which can be used interchangeably with baskets of different shapes and/or dimensions. (9) The continuous food oven according to claim 8, wherein the distance between the heater and the object to be heated is adjustable.