Automatic fire extinguishing function for bean ignition

Abstract

To detect bean ignition using a flame detection sensor and automatically extinguish bean ignition in a roasting apparatus.SOLUTION: A flame detection sensor is installed in a roasting apparatus 1. When the flame detection sensor detects a spark or flame, a fan is slowed down to reduce an airflow, so as to make CO2 filled and automatically extinguish ignition. Alternatively, the fan is operated at a high speed to increase the airflow and blow out the ignited flame, thereby achieving automatic extinguishing. Ignited beans are conveyed into a container filled with water to automatically extinguish the fire, thereby preventing fire accidents caused by ignition.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a device for extinguishing fire when beans catch fire in a roasting machine and a roasting machine.

Background Art

[0002] Conventionally, in a roasting machine, when abnormal heat generation occurs during roasting, there is a possibility of fire, and it has been possible to detect the ignition of beans, which is one of the causes of fire, by detection using a temperature sensor or the like. However, there are cases where automatic fire extinguishing cannot be performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In conventional roasting apparatuses, fire prevention has been performed by temperature control and fire extinguishing apparatuses. Further, the ignition of beans has been detected by a flame detection sensor to prevent accidents caused by the ignition of beans in the roasting apparatus. However, there has been a concern that sufficient fire prevention may be difficult. To solve this problem, the present invention is to detect the ignition of beans by the flame detection sensor and automatically extinguish the fire caused by the ignition of beans in the roasting apparatus.

Means for Solving the Problems

[0005] In the present invention, the flame detection sensor is installed in the roasting apparatus, and when the flame detection sensor detects a spark or a flame, the fan can be set to a low speed to reduce the air volume, so that CO2 can be filled to automatically extinguish the fire.

[0006] In the present invention, the flame detection sensor is installed in the roasting device. When the flame detection sensor detects a spark or a flame, the fan is set to a high speed to increase the air volume, so that the ignited flame can be blown out and the ignition can be automatically extinguished.

[0007] Also, by setting the fan to a high speed to increase the air volume, the beans ignited in the container filled with water can be sent in and automatically extinguished.

Effect of the Invention

[0008] According to the present invention, the ignition of the beans in the roasting device can be automatically extinguished. In addition to the conventional temperature control, fire prevention by the fire extinguishing device, and detection of sparks and flames by the flame detection sensor, accidents can be prevented by more reliably automatically extinguishing the ignition.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0010] FIG. 1 is a perspective view of the roasting apparatus 1 of the present invention. FIG. 2 is a schematic view of the roasting apparatus 1 of the present invention. As shown in FIG. 2, the roasting apparatus 1 is provided with the flame detection sensor 3 therein and can detect the ignition of beans. The flame detection sensor 3 is arranged in the roasting apparatus 1. When the flame detection sensor 3 detects a spark or a flame, the control device is programmed in the fan unit 5 having a control device so that the fan 4 can be set to a low speed to reduce the air volume and fill with CO2 to automatically extinguish the ignition. When the flame detection sensor 3 detects a spark or a flame, the control device is programmed in the fan unit 5 having a control device so that the fan 4 can be set to a high speed to increase the air volume and blow out the ignited flame or send the ignited beans into the container 4 filled with water to automatically extinguish the fire.

Example

[0011] The roasting apparatus 1 of the present embodiment includes a fan unit 5 having a control device as shown in FIG. 2. The roasting tank 2 contains beans. The fan unit 5 having a control device sets the roasting conditions and controls the operation of the roasting apparatus 1.

[0012] The roasting apparatus 1 of the present embodiment is provided with the flame detection sensor 3. As shown in FIG. 2, the flame detection sensor 3 is installed in the roasting apparatus 1 capable of monitoring the roasting tank 2 and detects a spark or a flame. As shown in the state transition diagram of FIG. 3, when the roasting container is monitored by the flame detection sensor 3 in STATE5 and the ignition of the roasting target is confirmed in STATE4, the heater stops in STATE6, and a command to set the fan 4 to a low speed or a high speed is output in STATE4. By filling with CO2 or blowing out the ignited flame, or sending the ignited beans into the container filled with water, the ignition can be automatically extinguished, and accidents caused by the ignition of beans or the like can be more reliably prevented.

Explanation of Reference Numerals

[0013] 1 Roasting apparatus 2 Roasting tank 3 Flame detection sensor 4 Fan Fan unit having a control device

Claims

**Claim 1** A roasting apparatus having a flame detection sensor in a roasting container and equipped with an automatic fire extinguishing function when ignition of beans is detected. **Claim 2** The roasting apparatus according to claim 1, wherein the flame detection sensor in the roasting machine detects sparks or flames and has a control device that automatically changes the air volume of the fan to automatically extinguish the ignition, and the exhaust passage from the roasting tank to the exhaust port is composed of a non-combustible material such as metal.

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