JP2001061656A - Gas rice-cooking device and continuous, automatic rice cooking system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve improvement of heating efficiency and high quality rice cooking and not increase the load on air conditioning and not deteriorate a work environment. SOLUTION: The rice cooking device 20 forms an opening 28 for conveying-in and conveying-out of a rice cooker A on a part thereof and is surrounded by a side wall 21 and a ceiling wall 22 and provided with a rice cooking room 24 having an exhaust port 23 on a part thereof and a metal-knit gas burner 25. Rice cooking is performed by receiving only one rice cooker. The rice cooking devices 20 are disposed on both sides of a conveying line and the rice cooking is performed continuously by the rice cooking, the conveying-in and the conveying-out being controlled individually by using a conveying-in/conveying-out apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker designed so that it can be installed and used in places where large quantities of rice need to be cooked, such as schools, factories, and rice manufacturing industries. The present invention relates to a device and a continuous automatic rice cooking system using the rice cooking device.

[0002]

2. Description of the Related Art A continuous automatic rice cooking system is installed in a place where a large amount of rice is cooked. If this example is explained based on FIG. 5, 1 is a rice cooker conveyance line, 2 is a feeding device, 3 is a washing device, 4 is an immersed rice charging device, 5 is a water injection device,
6 is a seasoning feeding device used as needed, 7 is a lid closing device, 8 is a rice cooker in which a Bunsen gas burner is arranged,
9 is a steaming device, 10 is a stirring device, 11 is a cooling device, 1
Reference numeral 2 denotes a delivery device. The rice cooker A placed on the transport line 1 from the rice cooker supply device 2 is washed by the washing device 3, and a fixed amount of rice is introduced by the immersion rice introduction device 4, A certain amount of water is injected by the water injection device 5, and if necessary, the seasoning is fed by the seasoning feeding device 6, and then the lid is closed by the lid closing device 7, and then the rice is cooked to the rice cooker 8. Cooking rice is performed while moving inside. The rice cooking time is set so that the rice is cooked optimally according to the time required to move the rice cooker 8, and the rice cooker A is continuously (in one line).
Move in.

[0003] Then, the rice cooker A after cooking rice reaches the steaming device 9, where steaming is performed while moving.
Next, after the lid is opened in the stirring device 10 and the rice is stirred, the rice is cooled to an appropriate temperature by the cooling device 11 and then sent out via the sending device 12.

[0004]

As described above, in the conventional continuous rice cooking system, the rice is cooked by the continuous movement system in which the rice cooker A is moved while the rice cooker A is moving. Disadvantages. 1. Since it is necessary to cook rice by adjusting the combustion amount of each gas burner and the conveying speed of rice cooker A, the presence of a veteran operator who can perform adjustment of fire control etc. is indispensable, and over time In a food factory where the same quality is always required because the rice cooking conditions are easy to change,
You will struggle with quality control. 2. In the factory, since the entrance of the rice cooker 28 is kept open, the combustion exhaust gas and radiant heat are exhausted from the room to increase the air conditioning load, and the combustion exhaust gas is exhausted to the room. Causes environmental degradation.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and it is an object of the present invention to provide a rice cooker which can improve the heating efficiency and cook high-quality rice, and does not increase the air-conditioning load or deteriorate the working environment. It is an object to provide a gas-type continuous automatic rice cooking system.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, in a rice cooker, a rice cooker loading and unloading port is partially formed and surrounded by a side wall and a top wall. And a rice cooker partially provided with an exhaust port, and a surface combustion gas burner incorporated in the bottom of the rice cooker.

Further, in the invention according to claim 2,
The invention according to claim 1 is characterized in that the surface combustion gas burner is a metal knit gas burner.

Further, in the invention according to claim 3,
According to the first aspect of the present invention, the surface combustion gas burner is a metal fiber gas burner.

Further, in the invention according to claim 4,
In the invention described in claim 1, the exhaust port is connected to an exhaust duct.

Further, in the invention according to claim 5,
In a continuous automatic rice cooking system, a rice cooker partially formed with a rice cooker entrance and a discharge outlet, surrounded by a side wall and a top wall, and partially provided with an exhaust port, and a surface incorporated at the bottom of the rice cooker A plurality of rice cookers comprising a combustion gas burner are arranged along the rice cooker transfer line, and the rice cooker conveyed by the transfer line is loaded into the rice cooker of the rice cooker, and is removed from the rice cooker after the rice cook is completed. And a rice cooker loading / unloading device for returning to the transport line.

[0011]

[Action] For automatic rice cooking, a washing device, a immersion rice injecting device, a water injection device, and a lid closing device are provided along the transport line, and the rice cooker coming through each of these devices is a rice cooker. Is carried into the rice cooker room of the rice cooker by the loading / unloading device from the transport line. When the rice cooker is carried in, the surface burning gas burner is ignited and rice cooking is started. Completion of rice cooking is determined by a heat sensor provided in contact with the bottom of the rice cooker or by a time calculated in advance based on thermal power, amount of cooking, and the like. At this timing, combustion of the gas burner is stopped. The rice cooker for which the rice cooking has been completed is carried out of the rice cooking room by the carry-in / carry-out device and returned to the transport line. The cooked rice cooker returned to the transport line then passes through a steaming device, during which steaming is performed, and then becomes a product via a stirring device and a cooling device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the rice cooker according to the present invention will be described in detail with reference to FIG. The rice cooker 20 has a gas burner 25 in which a metal knit 25a as a surface combustion gas burner is disposed on the surface of a rice cooker 24 surrounded by a side wall 21 and a ceiling wall 22 having an exhaust port 23.
, A rice cooker set receiving tray 26 is formed in the middle, and a heat sensor 27 for detecting the completion of the cooking is provided at the bottom. The loading / unloading port 28 is open for loading / unloading. In addition, although the door is not attached to the carry-in / carry-out port 28 of the embodiment, a door that can be closed during rice cooking may be attached.

The metal knit gas burner 25 of the embodiment is
A surface-burning burner in which heat-resistant metal fibers are knitted. However, a metal fiber gas burner (MFB) can be used as the other surface combustion gas burner.
This metal fiber gas burner is an application of a metal fiber mat (MFM) in which special metal fibers are layered in layers and pressed and sintered.
Both the metal knit and the metal fiber gas burner have a red heat mode in which the burner surface is red-heated to generate radiant heat, and a blue flame mode function in which the burner is burned at a load about 10 times as high as that of the red heat mode. Further, the surface combustion gas burners of the above two examples burn by premixing and do not require secondary air. The air ratio during premixing is 1.3.

FIG. 2 shows a rice cooker system for automatically cooking rice using the rice cooker 20 shown in FIG. 1, which is an embodiment of the rice cooker system according to the fourth aspect. In this embodiment, as shown in FIG. 3, reference numeral 30 denotes a transport line including a driving roller 31 and a guide 31a, and the rice cooker A is transported on the transport line 30. Reference numeral 32 denotes a feeding device for the rice cooker A, and reference numeral 33 denotes a cleaning device disposed along the transport line 30, and the cleaning of the empty rice cooker A is performed here. Reference numeral 34 denotes a transport line 30 in which the cleaning device 3
3 is a soaked rice charging device disposed next to the rice cooker A, in which the soaked rice is charged into the rice cooker A. Reference numeral 35 denotes a water injection device disposed next to the immersed rice charging device 34, in which a predetermined amount of water is injected. Reference numeral 36 denotes a seasoning feeding device, into which a seasoning is fed if necessary. Reference numeral 37 denotes a lid closing device, in which the rice cooker A is covered with a lid.
Note that all the devices up to this point are known devices. Three
Reference numeral 8 denotes a rice cooking zone. In the rice cooking zone 38, five rice cookers 20 are arranged on the transport line 30 on the left and right sides in the embodiment.

FIG. 4 shows an example of the arrangement of the rice cooking zone 38.
In FIG. 4, reference numeral 40 denotes a carry-in / carry-out port 28 of the rice cooker 20 arranged along the transport line 30, and the rice cooker A that has been transported is loaded into the empty rice cooker 20 by the carry-in / out device 39. When the rice cooking is completed, the transfer line 30
It is configured to be returned to. 39a in the figure is a guide, 3
9b is a loading / unloading lever. In FIG. 2, 40 is a steaming device, 41 is a stirring device, 42 is a cooling device, and 43 is a delivery device, all of which are known.

A control circuit 44 for the rice cooking zone 38 performs the following control. From transfer line 30 to rice cooking zone 3
The rice cooker A conveyed to the rice cooker 8 is sequentially loaded into the empty rice cooker 20 by controlling the carry-in / carry-out device 39, and the cooked rice is returned to the transfer line 30. The rice cooker 20 incorporates a sensor for detecting the presence or absence of the rice cooker A, and the carry-in / carry-out device 39 selects and carries in the empty rice cooker 20 based on this signal. If all the rice cookers 20 are full, the rice cooker 20 waits at the entrance of the rice cooker zone 38.

In the embodiment, the end of rice cooking is detected by the thermal sensor 27. However, when a constant amount of rice is cooked, the end of rice cooking may be controlled by time. In addition, the rice cooker 20 is a single-stage type in the embodiment, but may be a two-stage or three-stage type. In this multi-stage type, the rice cooker 20 is used as a single rice cooker, not a continuous rice cooker system. It may be a thing.

[0018]

The rice cooker and rice cooker system according to the present invention have the above-described configuration and operation, and have the following effects. 1. The gas burner in the rice cooker uses all primary air (air ratio =
By adopting a low NOx burner (surface combustion gas burner) that completely burns in 1.3), the target of heating efficiency can be set at about 50% with reduction of combustion exhaust gas and energy saving effect by high efficiency combustion. 2. With the use of all primary air and surface combustion gas burners,
The NOX level can be about 10 ppm (O ₂ = 0%).

3. Although the whole system is continuous, the rice cooker is kept stationary without moving the pot during rice cooking, and moves to the steaming zone after the rice cooking is completed. Therefore, operation management (operation management by numerical values) using sensors or the like becomes easy. Moreover, thinning operation and individual maintenance for each rice cooker can be performed as needed. As a result, high-quality rice can be obtained, the hardness of the rice can be changed by changing the degree of water addition for each rice cooker, and cooked rice can be cooked by adding some cooked rice to the line. 4. Since a water cooker before and after rice cooking, which is required in a conventional continuous rice cooking system, is not required, total energy saving such as water and fuel and shortening of time required for rice cooking can be achieved.

[5] By taking in all the combustion air from the outside as primary air, the air-conditioning load can be reduced, and by employing a structure utilizing air insulation, the deterioration of the working environment and the rise in indoor temperature due to radiant heat can be suppressed. 6. At the time of cooking rice, a factor that seems to have a large effect on the basis of the basic program can be input as needed, and combustion control can be performed automatically. 7. Since the gas burner performs all primary air combustion, the amount of exhaust gas is small, and a large exhaust hood and an exhaust duct as in the related art are not required. Therefore, the factory can have a building structure with a low ceiling.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a rice cooker according to the present invention.

FIG. 2 is an explanatory diagram of a rice cooking system according to the present invention.

FIG. 3 is an explanatory view of a rice cooker transport line.

FIG. 4 is an explanatory diagram of a rice cooker and a rice cooker loading / unloading device.

FIG. 5 is an explanatory diagram of a conventional continuous rice cooking system.

[Explanation of symbols]

 Reference Signs List 20 rice cooker 24 rice cooker 25 metal knit gas burner 27 thermal sensor 28 loading / unloading port 30 transfer line 32 feeding device 33 washing device 34 immersion rice input device 35 water injection device 36 seasoning input device 37 closing device 38 rice cooking zone 39 loading・ Unloading device 40 Steaming device 44 Control circuit A Rice cooker

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiya Kuriyama 3-13-25 Yamukai, Tsurumi-ku, Yokohama, Kanagawa Prefecture (72) Keisuke Oshita 3-3-2 Sakaemachi, Higashimurayama-shi, Tokyo Inside Tokyo Food System Co., Ltd. F term (reference) 4B054 AA02 AA06 AA13 AA17 AB01 AC02 BA12 BB12 CG05

Claims (5)

[Claims] 1. A rice-cooking room partially formed with a rice cooker entrance and a discharge outlet, surrounded by a side wall and a top wall, and partially provided with an exhaust port, and a surface combustion incorporated in the bottom of the rice-cooking room A rice cooker comprising a gas burner. 2. The rice cooker according to claim 1, wherein the surface combustion gas burner is a metal knit gas burner. 3. The rice cooker according to claim 1, wherein the surface combustion gas burner is a metal fiber gas burner. 4. The rice cooker according to claim 1, wherein the exhaust port is connected to an exhaust duct. 5. A rice cooker partially formed with a rice cooker entrance and a discharge outlet, surrounded by a side wall and a top wall, and partially provided with an exhaust port, and a surface combustion incorporated in a bottom portion of the rice cooker. A plurality of rice cookers comprising a gas burner are arranged along the rice cooker transfer line, and the rice cooker conveyed by the transfer line is loaded into the rice cooker of the rice cooker, and is taken out of the rice cooker after the rice is cooked. Automatic rice cooking system having a configuration in which a rice cooker loading / unloading device is provided to return to the transport line.