JPH06281223A - Ventilation system - Google Patents

Abstract

PURPOSE:To provide a ventilation system in which safety in the case of using a heater is enhanced by preventing continuation of a heating operation when a ventilator is defective. CONSTITUTION:A ventilator 3 is arranged above a gas range 1 to discharge the air around the range out of a room. A wind velocity sensor 4 detects an operation of the ventilator 3. When the sensor 3 detects that a malfunction occurs in the ventilator 3 during ignition of the range, a ventilation controller 5 generates a heating stop signal. A combustion controller 3 shuts off a combustion gas supply passage 11 to stop burning of the range 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for exhausting unnecessary gases such as smoke, water vapor and carbon dioxide, which are generated during the operation of a heating device such as a range and a water heater mainly used in a kitchen, to the outside. It is a thing.

[0002]

2. Description of the Related Art Generally, a kitchen is provided with a ventilation device such as a ventilation fan, and when heating and cooking is performed by using a heating device such as a gas range, carbon dioxide and steam generated as a result of combustion of combustion gas, and cooked food. The air in the room is ventilated by discharging unnecessary gas such as smoke and water vapor generated by heating the object to the outside of the room. Even when a non-combustion type heating device such as an electromagnetic cooker is used, an unnecessary gas is generated from the food to be cooked, and therefore a ventilation device is necessary.

By the way, in a heating device in which smoke and water vapor are generated in accordance with the heating operation, there is a problem that if the ventilation fan does not operate during the heating operation, the room is filled with smoke and water vapor and is uncomfortable. Further, in the case of a combustion type heating device in which carbon dioxide is generated along with the heating operation, carbon monoxide is generated if the indoor ventilation is insufficient and incomplete combustion occurs, and the life of the user is endangered. The problem arises.

In order to solve this problem, a ventilation system in which a ventilation fan is operated in conjunction with ignition has been conventionally used in a gas water heater, which is a heating device.

[0005]

In the above configuration, since the ventilation device operates in conjunction with the start-up of the heating device, the ventilation device automatically operates together with the operation of the heating device without human operation, and the heating device is heated. Unnecessary gas generated by the heating operation of the device can be exhausted to the outside of the room, and the safety when the heating device is used can be improved.

However, if the ventilator fails to operate due to a failure in the part that links the operation of the ventilator to the operation of the heating device or the failure of the ventilator itself, in the end, unnecessary gas fills the room, causing discomfort. There will be problems that may occur or life may be endangered. The present invention is intended to solve the above problems, and when the ventilation device fails during operation of the heating device, the heating operation of the heating device is stopped to prevent the heating operation from continuing in a state where ventilation cannot be performed. Therefore, it is intended to provide a ventilation system with improved safety when the heating device is used.

[0007]

According to the present invention, in order to achieve the above object, a ventilation device for discharging air in a room in which a heating device is installed, and a ventilation operation for detecting an operating state of the ventilation device. It is characterized by comprising a detection means and a heating control means for stopping the heating operation of the heating device when the ventilation operation detection means detects that the ventilation device is inoperative.

[0008]

According to the above construction, the heating operation of the heating device is stopped when the ventilation operation detecting means detects that the ventilation device is inoperative, and the ventilation operation is performed when the heating device is in the heating operation. When the device fails and becomes inoperative, the heating operation of the heating device is stopped to prevent unnecessary gas from filling the room. For example, if the ventilator fails while the gas range is ignited as a heating device, if the condition is left for a long time, carbon dioxide will fill the room and incomplete combustion will occur. Although carbon monoxide may be generated due to this, in the above-described configuration, generation of carbon monoxide due to incomplete combustion can be prevented in advance by stopping the heating operation of the heating device as well as the occurrence of a failure in the ventilation device.

[0009]

EXAMPLE In this example, a gas range 1 is illustrated as a heating device as shown in FIG. 1, but the heating device is a gas water heater, a gas stove, an oil stove, an electromagnetic cooker, etc. The technical idea of the present invention can be applied to any device as long as unnecessary gas is released from the device or the object to be heated into the room.

The combustion gas supply passage 11 to the gas range 1 is provided with an electromagnetic valve or the like to control the combustion as a heating control means capable of opening and closing the supply passage 11 and adjusting the opening amount of the supply passage 11. A device 2 is provided. In the combustion control device 2, when the ignition operation is performed in the gas range 1, the supply passage 11 is opened to supply the combustion gas to the gas range 1, and the heating state signal is turned on while the combustion gas is being supplied. And output. Further, when a combustion stop signal is input from the outside while the combustion gas is being supplied, the combustion control device 2 shuts off the supply path 11 to stop the heating operation of the gas range 1. When the heating operation of the gas range 1 is stopped, the heating state signal is turned off. The gas range 1 is provided with a temperature sensor 13 such as a thermistor capable of detecting the temperature of the outer surface of the bottom wall of the heating and cooking container 12 such as a pan, and the combustion control device 2 detects the temperature detected by the temperature sensor 13. Depending on the temperature detected by the temperature sensor 13, the type of food in the cooking container 12 is determined based on the change pattern to prevent burning of simmered food and ignition of fried food. Adjust the amount of combustion gas supplied to range 1. The heating state signal is also turned off when the heating operation of the gas range 1 is stopped based on the temperature detected by the temperature sensor 13.

A ventilation fan 3 as a ventilation device is arranged above the gas range 1, and the air around the gas range 1 can be exhausted to the outside of the room through the ventilation fan 3. The operation of the ventilation fan 3 is detected by ventilation operation detecting means such as the wind speed sensor 4. The wind speed sensor 4 detects the airflow generated during the operation of the ventilation fan 3, and determines that the ventilation fan 3 is operating while the airflow is generated. The output of the wind speed sensor 4 is input to the ventilation control device 5. In the ventilation control device 5,
When it is determined that the ventilation fan 3 is not operating normally due to the input from the wind speed sensor 4, a combustion stop signal is sent to the combustion control device 2 to stop the heating operation of the gas range 1. Further, the ventilation control device 5 operates the ventilation fan 3 when an ON heating state signal is input from the combustion control device 2, and stops the ventilation fan 3 after a lapse of a specified time when an OFF heating state signal is input. .

The operation of the above configuration will be described. As shown in FIG. 2, when the gas range 1 is ignited (S1), the combustion control device 2 transmits an ON heating state signal to the ventilation control device 5 (S2), and the ventilation control device 5 activates the ventilation fan 3 ( S3). When the ventilation fan 3 is normal (S4), the wind speed sensor 4 detects the air flow generated by the ventilation fan 3 to continue the operating states of the gas range 1 and the ventilation fan 3. Also, when the gas range 1 is extinguished (S
5) Then, the combustion control device 2 transmits an OFF heating state signal to the ventilation control device 5 (S6), and the operation of the ventilation fan 3 is stopped after a lapse of a specified time (S7).

On the other hand, if the ventilation fan 3 fails after the activation of the ventilation fan 3 and exhaust to the outside becomes impossible, the ventilation control device 5 detects the failure of the ventilation fan 3 by the output of the wind speed sensor 4,
A combustion stop signal is output to the combustion control device 2 (S
8). In the combustion control device 2, when the heating stop signal is received, the supply of combustion gas to the gas range 1 is cut off and the gas range 1
Is extinguished by force (S9). That is, when the ventilation fan 3 fails, the gas burner 1 can be extinguished before incomplete combustion or the like occurs, and the occurrence of an accident can be prevented in advance, so to speak, it has a fail-safe function.
Here, if a voltage signal is input to the combustion control device 2 and the combustion stop signal is set to no voltage during normal operation of the ventilation fan 3, disconnection between the combustion control device 2 and the ventilation control device 5 will occur. ,
It can be handled in the same manner as when the combustion stop signal is input to the combustion control device 2, and the safety is further enhanced.

In the above-mentioned embodiment, the wind speed sensor is used as the ventilation operation detecting means, but it is possible to use not only a device for measuring the wind speed but also a device for observing the load current of the motor of the ventilation fan.

[0015]

As described above, the present invention stops the heating operation of the heating device when the ventilation operation detecting means detects that the ventilation device is inoperative. If the ventilator fails at a certain time and becomes inoperative, the heating operation of the heating device is stopped, so that there is an advantage that unnecessary gas can be prevented from filling the room. For example, if the ventilator fails when the gas range is ignited as a heating device,
If the state is left for a long time, carbon dioxide may fill the room and carbon monoxide may be generated due to incomplete combustion. By stopping the heating operation of 1, the generation of carbon monoxide due to incomplete combustion can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment.

FIG. 2 is an operation explanatory diagram of the embodiment.

[Explanation of symbols]

 1 Gas range 2 Combustion control device 3 Ventilation fan 4 Wind speed sensor 5 Ventilation control device

Front page continued (72) Inventor Enomoto Yu 1-52, Minami-shi Oka, Minato-ku, Osaka 1-52 Harman Co., Ltd. (72) Inventor Hiroshi Kodera 1-1-52 Minami-shi Oka, Minato-ku, Osaka 1-52 Harman Co., Ltd. (72 ) Inventor Takashi Matsumoto 1-52, Minami-shi Oka, Minato-ku, Osaka 1-52 Harman Co., Ltd. (72) Inventor, Yuzuru Uchida 1-1-52 Minami-shi Oka, Minami-ku, Osaka Haraman Co., Ltd.

Claims (1)

[Claims] 1. A ventilation device that discharges air in a room where a heating device is installed to the outside, a ventilation operation detection unit that detects an operation state of the ventilation device, and the ventilation device is inoperative due to the ventilation operation detection unit. And a heating control means for stopping the heating operation of the heating device when this is detected.