JP6879709B2 - Ventilation system - Google Patents

Description

The present invention relates to a ventilation system, in particular to a ventilation system comprising a control means configured to perform a mode of adjusting the airflow of the ventilation means.

Conventionally, a ventilation system including a control means configured to execute a mode for adjusting the air volume of the ventilation means is known (see, for example, Patent Document 1).

The above-mentioned Patent Document 1 includes an automatic ventilation unit including a key input unit operated by a user, a detection unit for detecting an air condition in a room, a ventilation fan provided in the room, and a control unit for controlling the drive of the ventilation fan. The device is disclosed. The control unit of this automatic ventilation device is configured to be able to execute an automatic operation mode in which the ventilation fan is driven by an automatic operation air volume corresponding to the output of the sensor detection unit (indoor device). Here, the control unit of the automatic ventilation device described in Patent Document 1 is set for manual operation when the manual operation air volume is set by operating the user's key input unit during execution of the automatic operation mode. When the user performs an operation to stop the manual operation while driving the ventilation fan with the air volume, the ventilation fan is driven by the automatic operation air volume in the automatic operation mode before the manual operation mode is switched.

Patent No. 3075689

However, in the automatic ventilation device described in Patent Document 1, when the operation of stopping the manual operation is performed, the automatic operation air volume according to the output of the sensor detection unit (indoor device) before the manual operation mode switching is performed. The ventilation fan is driven. Therefore, for example, when the user switches from the automatic operation mode (first ventilation mode) to the manual operation mode (second ventilation mode) because the automatic operation air volume is too large or too small, the switching is performed. Nevertheless, there is a problem that after the user stops the manual operation mode, the ventilation fan is driven again by the automatic operation air volume that the user feels is too large or too small.

The present invention has been made to solve the above-mentioned problems, and one object of the present invention is ventilation capable of appropriately performing automatic operation when automatic operation is performed after manual operation. To provide a system.

The ventilation system according to one aspect of the present invention includes a cooker which is an indoor device arranged indoors, a gas alarm which is an indoor device and detects the quality of air in the room, and ventilation for ventilating the air in the room. For the device, the air volume setting means that accepts the user's setting operation regarding the air volume of the ventilation device, the first ventilation mode that adjusts the air volume of the ventilation device so that the air volume matches the state of the indoor device, and the user's setting operation. The control means includes a control means configured to execute a second ventilation mode for adjusting the air volume of the ventilation device so as to have a set air volume according to the set air volume, and the control means has an air volume during the execution of the first ventilation mode. When switching to the second ventilation mode based on the user's setting operation to the setting means, the second ventilation mode is executed for a predetermined time, and after a predetermined time elapses, the second ventilation mode is switched to, and the user at the time of switching The first ventilation mode is newly executed with the air volume based on the set air volume of the ventilation device according to the setting operation, and the control means is set by the user in the new first ventilation mode after a lapse of a predetermined time. In addition to the set air volume of the ventilation device according to the setting operation, the air volume of the ventilation device is adjusted based on both the driving state of the cooker and the air quality detection state of the gas alarm.

In the ventilation system according to one aspect of the present invention, the control means is in the second ventilation mode (manual rotation mode) based on the user's setting operation to the air volume setting means while the first ventilation mode (automatic operation mode) is being executed. When switched to, the second ventilation mode is executed for a predetermined time, and after the predetermined time elapses, the first ventilation mode is newly executed with the air volume based on the air volume set by the ventilation device according to the user's setting operation. It is configured as follows. As a result, the air volume in the first ventilation mode (automatic operation mode) according to the state of the indoor equipment becomes the air volume based on the set air volume based on the user's setting operation to the air volume setting means, so that the second ventilation mode (manual operation) The user's setting operation when the mode) is set can be reflected in the air volume in the new first ventilation mode. As a result, the user's intention (preference) can be reflected in the air volume (air volume according to the state of the indoor equipment) in the new first ventilation mode, so that the user's intention when the automatic operation is performed after the manual operation. It is possible to perform automatic operation appropriately according to the above.

In the ventilation system according to the above one aspect, preferably, the control means is switched with the air volume of the ventilation device in the first ventilation mode before being switched to the second ventilation mode based on the setting operation of the user to the air volume setting means. It is configured to adjust the air volume of the ventilation device in the new first ventilation mode after a predetermined time elapses, based on the difference in air volume from the set air volume of the ventilation device according to the user's setting operation after that. With this configuration, the air volume of the ventilation equipment in the new first ventilation mode (automatic operation mode) is adjusted based on the air volume difference, so the air volume according to the set air volume intended by the user and the state of the indoor equipment. The deviation from the above can be surely reflected in the air volume of the ventilation equipment in the new first ventilation mode. As a result, it is possible to surely suppress that the air volume of the ventilation device in the new first ventilation mode (automatic operation mode) is different from the user's intention (preference).

In this case, preferably, the storage means for storing the learning addition points whose absolute value increases as the air volume difference increases is further provided, and the control means has a predetermined time based on the learning addition points corresponding to the air volume difference. It is configured to adjust the air volume of the ventilation equipment in the new first ventilation mode after the lapse. With this configuration, the user's intention (preference) can be easily quantified using the learning addition points corresponding to the air volume difference, so that the user's intention is determined by the air volume of the ventilation device in the new first ventilation mode. (Preference) can be easily reflected. Further, by setting the absolute value of the learning addition point to increase as the air volume difference increases, the magnitude of the air volume difference can be reflected in the air volume of the ventilation device in the new first ventilation mode. The air volume of the ventilation device in the new first ventilation mode (automatic operation mode) can be appropriately brought close to the air volume intended by the user.

In the configuration in which the air volume is adjusted based on the learning addition points corresponding to the above air volume difference, the set air volume of the ventilation device according to the user's setting operation after switching is preferably more than the air volume of the ventilation device in the first ventilation mode. The absolute value of the learning addition point when is small is the absolute value of the learning addition point when the set air volume of the ventilation device according to the user's setting operation after switching is larger than the air volume of the ventilation device in the first ventilation mode. Greater than. Here, it is generally considered that the user tends to feel that the air volume according to the state of the indoor equipment in the first ventilation mode is too large (too strong) rather than too small (too weak). Therefore, it is considered that the frequency of setting operations for reducing the set air volume is increased by the user. Therefore, in the present invention, as described above, the absolute value of the learning addition point when the set air volume of the ventilation device according to the user's setting operation after switching is smaller than the air volume of the ventilation device in the first ventilation mode is calculated. , The air volume set by the user by making it larger than the absolute value of the learning addition point when the set air volume of the ventilation device according to the user's setting operation after switching is larger than the air volume of the ventilation device in the first ventilation mode. The setting operation of reducing the value can be reflected in the air volume of the ventilation device in the new first ventilation mode (automatic operation mode) more than the setting operation of increasing the set air volume by the user. As a result, it is possible to reduce the frequency with which the user manually performs the setting operation again after the first ventilation mode (after automatic operation).

The ventilated system according to the aforementioned aspect, as preferably, the control means is in the first ventilation mode, the air volume corresponding to the drive state of the cooker, or made the wind amount corresponding to the air quality detection state of the gas detector In addition to being configured to adjust the air volume of the ventilation equipment , in the new first ventilation mode after a lapse of a predetermined time, the air volume according to the driving state of the cooker or the air quality detection of the gas alarm It is configured to adjust the air volume of the ventilation device so that the air volume is according to the state and is based on the set air volume of the ventilation device according to the user's setting operation. With this configuration, in the new first ventilation mode (automatic operation mode), the user's intention (the air volume according to the driving state of the cooker or the air volume according to the air quality detection state of the gas alarm) You can reflect your preference).

In this case, preferably, in the first ventilation mode, the control means adopts the larger of the air volume according to the driving state of the cooker and the air volume according to the air quality detection state of the gas alarm. Therefore, it is configured to adjust the air volume of the ventilation equipment so that it becomes the adopted air volume. With this configuration, it is possible to prevent the air volume of the ventilation device from becoming smaller than the air volume according to the driving state of the cooker and the air volume according to the air quality detection state of the gas alarm. .. As a result, the amount of air required to drive the cooker can be reliably supplied, and the deterioration of the air quality in the room can be suppressed.

In the ventilation system according to the above one aspect, preferably, the control means sets the air volume while executing the second ventilation mode for a predetermined time with the air volume according to the setting operation of the user when the second ventilation mode is switched to. When the user's setting operation to the means is newly performed, after a predetermined time elapses, the first ventilation mode is the air volume based on the set air volume of the ventilation device according to the newly performed user's setting operation. Is configured to run anew. With this configuration, the latest intention (preference) of the user can be reliably reflected in the air volume of the ventilation device in the new first ventilation mode (automatic operation mode).

According to the present invention, when the automatic operation is performed after the manual operation as described above, the automatic operation can be appropriately performed.

It is a schematic diagram of the ventilation system by one Embodiment of this invention. It is a block diagram of the ventilation system by one Embodiment of this invention. It is an air quality interlocking air volume map of the ventilation system by one Embodiment of this invention. It is an actual air volume map of the ventilation system by one Embodiment of this invention. It is a learning addition point map of the ventilation system by one Embodiment of this invention. It is a control flow of the ventilation system according to one Embodiment of this invention.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

(Ventilation system configuration)
The overall configuration of the ventilation system 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4.

The ventilation system 1 shown in FIG. 1 includes a detection device 2. The ventilation system 1 includes a cooker 3. The ventilation system 1 includes a ventilation device 4. The detection device 2, the cooker 3, and the ventilation device 4 are arranged in the room 500. The detection device 2 is configured to detect the state of air in the room 500. Specifically, the detection device 2 is a gas alarm. The cooker 3 is configured to cook by heat. The ventilation device 4 is configured to ventilate the air in the room 500. The detection device 2 is an example of an "indoor device" within the scope of the claims. The cooker 3 is an example of "indoor equipment" within the scope of claims.

(Configuration of detection device)
As shown in FIG. 2, the detection device 2 includes various sensors 21. The detection device 2 includes a display unit 22. The detection device 2 includes a voice speaker 23. The detection device 2 includes a communication unit 24. The detection device 2 includes a microcomputer 25. The detection device 2 includes an operation unit 26. The detection device 2 includes a control means 27. The detection device 2 includes a storage means 28.

The various sensors 21 include a smoke sensor 211. The smoke sensor 211 is configured to detect smoke. When the smoke sensor 211 detects smoke, the control means 27 detects the occurrence of a fire.

The various sensors 21 include a gas sensor 212. The gas sensor 212 is configured to detect a predetermined gas. The gas sensor 212 is a sensor capable of detecting combustion gas such as methane city gas and LP gas, for example. When the gas sensor 212 detects the gas, the control means 27 detects the gas leak.

The various sensors 21 include a CO (carbon monoxide) sensor 213. The CO sensor 213 is configured to detect CO gas. When the CO sensor 213 detects the CO gas, the control means 27 detects the presence of the CO gas in the room 500.

The various sensors 21 include an air quality sensor 214. The air quality sensor 214 is configured to detect the air quality in the room 500. The "air quality" is not limited to a specific gas component, but is a broad concept indicating an odor generated during cooking and a living odor such as the odor of garbage. The air quality sensor 214 is, in other words, an odor sensor.

The control means 27 is configured to evaluate the air quality of the indoor 500 in six stages from level 0 to level 5 as the air quality level based on the result of detecting the air quality by the air quality sensor 214. The minimum level 0 indicates a state in which there is almost no odor. The highest level 5 indicates a very strong odor. At levels 1 to 4, the degree of odor increases as the value of the air quality level increases.

The display unit 22 includes a plurality of light emitting units (for example, LEDs). The display unit 22 includes a light emitting unit 221 that notifies the detection state by the smoke sensor 211. The display unit 22 includes a light emitting unit 222 that notifies the detection state by the gas sensor 212. The display unit 22 includes a light emitting unit 223 that notifies the detection state by the CO sensor 213. The display unit 22 includes a light emitting unit 224 that notifies the detection state by the air quality sensor 214. In addition, the display unit 22 includes a light emitting unit 225 that notifies the state of the power supply of the detection device 2.

Each light emitting unit can be configured to emit light in a predetermined color according to the detection target of the corresponding sensor. Further, the light emitting unit 224 includes three light sources of red (R), green (G), and blue (B), and can emit light in various colors by using the light emitted from each of the three light sources. It is configured to be possible. Thereby, it is possible to notify the user which of the six air quality levels the indoor 500 is in, using various colors.

The voice speaker 23 is provided to notify the user of the state (warning, etc.) of the detection device 2 by voice.

The communication unit 24 is configured to be able to communicate with the communication unit 32 described later of the cooker 3. The communication unit 24 is configured to be able to communicate with the communication unit 42 described later of the ventilation device 4. By using the communication unit 24, the detection device 2 can communicate with each of the cooker 3 and the ventilation device 4. Further, the communication unit 24 can use communication modules of various communication standards. The communication unit 24 can adopt, for example, a Bluetooth (registered trademark) communication module.

The microcomputer 25 is configured to control the communication unit 24. The microcomputer 25 is a control unit composed of a CPU that operates according to a predetermined program.

The operation unit 26 is provided so that the user can perform various input operations on the detection device 2. The operation unit 26 is composed of, for example, a switch.

The control means 27 is a control unit composed of a CPU that operates according to a predetermined program. The control means 27 is mainly configured to perform various controls of the detection device 2. Further, the control means 27 is configured to be operable in conjunction with at least one of the control means 36 and 46. Details of the control means 27 will be described later.

The storage means 28 stores an air quality-linked air volume map (see FIG. 3), an actual air volume map (see FIG. 4), and a learning addition point map (see FIG. 5), which will be described later. The storage means 28 is configured to be able to store the driving state of the ventilation device 4 in time series. The storage means 28 is configured to be able to store the contents of the user's setting operation on the ventilation device 4.

(Composition of cooker)
The cooker 3 is, for example, a gas stove. The cooker 3 is not limited to a gas stove, but is a concept indicating a cooker for cooking by heat, such as a gas-type rice cooker or an electromagnetic cooker.

The cooker 3 includes a heating unit 31. The cooker 3 includes a communication unit 32. The cooker 3 includes a communication unit 33 different from the communication unit 32. The cooker 3 includes an operation unit 34. The cooker 3 includes a display unit 35. The cooker 3 includes a control means 36. The cooker 3 includes a light emitting unit 37 (see FIG. 1).

The heating unit 31 includes a right stove 311 and a rear stove 312, a left stove 313, and a grill 314. The right stove 311, the rear stove 312, the left stove 313, and the grill 314 are each configured to generate heat due to the combustion of combustion gas.

The communication unit 32 is a communication unit having the same standard or a standard compatible with the communication unit 24. By using the communication unit 32, the cooker 3 can communicate with the detection device 2.

The communication unit 33 is a communication unit having a standard different from that of the communication unit 32. By using the communication unit 33, the cooker 3 can communicate with the ventilation device 4.

The operation unit 34 is an operation unit for the user to perform various operations on the cooker 3. The operation unit 34 is composed of, for example, a switch.

The display unit 35 is configured to display various information regarding the cooker 3.

The control means 36 is a control unit composed of a CPU that operates according to a predetermined program. The control means 36 is mainly configured to perform various controls of the cooker 3.

The light emitting unit (LED) 37 shown in FIG. 1 is configured to notify the user of the power on / off state of the cooker 3.

(Ventilation equipment configuration)
The ventilation device 4 is a range hood for exhausting the air in the room 500 to the outside. The ventilation device 4 includes a fan unit 41. The ventilation device 4 includes a communication unit 42. The ventilation device 4 includes a communication unit 43. The ventilation device 4 includes an operation unit 44. The ventilation device 4 includes a display unit 45. The ventilation device 4 includes a control means 46 .

The fan unit 41 is a fan that is rotationally driven to replace the air in the room 500. The fan unit 41 is configured so that the rotation speed is controlled by the control means 46. The fan unit 41 is configured to be rotationally driven in four stages (OFF, weak, medium and strong). “OFF” indicates a state in which the fan unit 41 is not rotationally driven (a state in which there is no air volume in the ventilation device 4). In "weak", "medium", and "strong", the rotation speed of the fan unit 41 increases in this order, and the air volume of the ventilation device 4 increases. As a result, the air volume of the ventilation device 4 can be set to any of four stages according to the magnitude of the air volume.

The communication unit 42 is a communication unit having the same standard or a standard compatible with the communication unit 24. By using the communication unit 42, the ventilation device 4 can communicate with the detection device 2.

The communication unit 43 is a communication unit having a standard different from that of the communication unit 42. By using the communication unit 43, the ventilation device 4 can communicate with the cooker 3.

The operation unit 44 is an operation unit for the user to perform various operations on the ventilation device 4. The operation unit 44 is configured to be able to receive a user's setting operation regarding the air volume of the ventilation device 4. The operation unit 44 includes, for example, a switch that switches the air volume (set air volume described later) of the ventilation device 4 set and operated by the user depending on the number of times the user presses the button. In the ventilation device 4, the air volume (set air volume) is switched in the order of "OFF", "weak", "medium", and "strong". The operation unit 44 is an example of the "air volume setting means" in the claims.

The display unit 45 is configured to display various information related to the ventilation device 4. The display unit 45 includes a plurality of light emitting units (for example, LEDs). The display unit 45 is configured to notify various information such as the power supply status and the air volume (actual air volume) of the ventilation device 4.

The control means 46 is a control unit composed of a CPU that operates according to a predetermined program. The control means 46 is mainly configured to perform various controls of the ventilation device 4.

(Detailed control contents of the control means of the detection device)
Next, the detailed control contents of the control means 27 of the detection device 2 will be described.

(Explanation of ventilation mode)
The control means 27 of the detection device 2 causes the fan unit 41 of the ventilation device 4 to be rotationally driven by two operation modes, an automatic ventilation mode (first ventilation mode) and a manual ventilation mode (second ventilation mode). It is configured as follows. The control means 27 of the detection device 2 is configured to rotationally drive the fan unit 41 of the ventilation device 4 in the automatic ventilation mode that automatically adjusts the air volume of the ventilation device 4 except in the case of the manual ventilation mode. ing.

(Explanation of automatic ventilation mode)
In the automatic ventilation mode, the control means 27 of the detection device 2 is the air volume of the ventilation device 4 based on the driving state of the cooker 3 (cooker interlocking air volume) or the air volume of the ventilation device 4 based on the air quality of the indoor 500 (air). The air volume (actual air volume) of the ventilation device 4 is adjusted so as to be one of the air quality linked air volume).

(Determination of air volume based on the driving state of the cooker)
The control means 27 of the detection device 2 is configured to acquire the air volume of the ventilation device 4 (cooker interlocking air volume) based on the driving state of the cooker 3 received via the communication units 32 and 24. At this time, the control means 27 is configured to determine the cooker-linked air volume of the ventilation device 4 to be one of "OFF", "weak", "medium", or "strong" based on a predetermined condition. ing. Predetermined conditions include whether or not the right stove 311, the rear stove 312, the left stove 313, and the grill 314 are driven, the right stove 311 being driven, the rear stove 312, the left stove 313, and the grill 314, respectively. Examples include the driving state (large and small of the thermal power), the positional relationship between the driving right stove 311, the rear stove 312, the left stove 313, and the grill 314.

(Determining air volume based on air quality detection status)
The control means 27 of the detection device 2 is configured to acquire the air volume (air quality interlocking air volume) of the ventilation device 4 based on the air quality of the room 500 evaluated as the air quality level. At this time, the control means 27 sets the air quality-linked air volume of the ventilation device 4 corresponding to the air quality level to "OFF", "weak", "medium" or "medium" based on the air quality-linked air volume map shown in FIG. It is configured to determine either "strong".

In the initial state (state before learning described later), when the air quality level is level 0, the air quality interlocking air volume is "OFF". In the initial state, the air quality interlocking air volume is "weak" when the air quality level is level 1 or 2. In the initial state, the air quality interlocking air volume is "medium" when the air quality level is level 3 or 4. In the initial state, when the air quality level is level 5, the air quality interlocking air volume becomes “strong”. The control means 27 is in the initial state when it is reset or the like and is switched to the initial setting of the detection device 2.

(Determination of air volume in automatic operation mode)
The control means 27 of the detection device 2 determines the air volume of the ventilation device 4 based on the driving state of the cooker 3 (air quality interlocking air volume) and the air volume of the ventilation device 4 based on the air quality of the indoor 500 (air quality interlocking air volume). Of these, a large air volume is adopted, and the air volume (actual air volume) of the ventilation device 4 is adjusted so as to be the adopted air volume. Specifically, the control means 27 of the detection device 2 acquires the actual air volume from the cooker-linked air volume and the air quality-linked air volume based on the actual air volume map shown in FIG. 4, and ventilates the air volume so as to be the actual air volume. It is configured to adjust the air volume of the device 4. For example, when the cooker-linked air volume based on the driving state of the cooker 3 is "weak" and the air quality-linked air volume is "medium", the control means 27 adopts "medium". Then, the control means 27 is configured to adjust the air volume of the ventilation device 4 so that the adopted air volume is “medium”.

(Explanation of manual ventilation mode)
When the air volume (set air volume) of the ventilation device 4 is set to "OFF", "weak", "medium" or "strong" by operating the operation unit 44 of the ventilation device 4 by the user. In addition, the detection device 2 is notified that the air volume setting operation has been performed by the user via the communication unit 42 of the ventilation device 4. When the control means 27 of the detection device 2 receives from the ventilation device 4 that the air volume setting operation has been performed by the user while the automatic ventilation mode is being executed, the control means 27 switches to the manual ventilation mode. The control means 27 of the detection device 2 adjusts the air volume (actual air volume) of the ventilation device 4 so that the set air volume is set according to the setting operation by the user. Then, the set air volume is stored in the storage means 28 by the control means 27.

The manual ventilation mode is continued for a predetermined time (for example, about 30 minutes) after receiving the setting operation of the user. The control means 27 of the detection device 2 is configured to automatically switch from the manual ventilation mode to the automatic ventilation mode after a lapse of a predetermined time.

When the user's setting operation is newly performed while the manual ventilation mode is being executed, the ventilation device 4 is set so that the set air volume is newly set and operated by the user by the control means 27 of the detection device 2. The air volume (actual air volume) of is adjusted. In this case, the manual ventilation mode is performed for a predetermined time (for example, about 30 minutes) after receiving the user's first setting operation.

When the air volume of the ventilation device 4 is adjusted so that the set air volume is newly set and operated by the user while the manual ventilation mode is being executed, the right stove 311, the rear stove 312, and the left of the cooker 3 are used. When the drive of any one of the stove 313 and the grill 314 is changed (except when all are not driven), the control means 27 of the detection device 2 changes the drive state of the cooker 3. The air volume (actual air volume) of the ventilation device 4 is adjusted so as to be the air volume linked to the cooker based on the above. Further, when the manual ventilation mode is being executed and the air volume of the ventilation device 4 is adjusted so that the air volume is linked to the cooker based on the driving state of the cooker, the user's setting operation is newly performed. In this case, the control means 27 of the detection device 2 adjusts the air volume (actual air volume) of the ventilation device 4 so that the set air volume is newly set and operated by the user. That is, while the manual ventilation mode is being executed, the control means 27 has an air volume (cooker interlocking) corresponding to the last setting operation of the user's setting operation for the cooker 3 or the user's setting operation for the ventilation device 4. The air volume (actual air volume) of the ventilation device 4 is adjusted based on the air volume or the set air volume).

(Explanation of learning function)
Here, in the present embodiment, the control means 27 of the detection device 2 is a user when the manual ventilation mode is executed for a predetermined time and the manual ventilation mode is automatically switched to the automatic ventilation mode after the predetermined time elapses. The automatic ventilation mode is newly executed with the air volume based on the set air volume of the ventilation device 4 according to the setting operation of.

Specifically, the control means 27 determines the air volume of the ventilation device 4 in the automatic ventilation mode before being switched to the manual ventilation mode based on the user's setting operation on the operation unit 44 of the ventilation device 4, and the air volume after the switching. It is configured to adjust the air volume of the ventilation device 4 in the new automatic ventilation mode after a predetermined time elapses, based on the air volume difference from the set air volume of the ventilation device 4 according to the user's setting operation in the manual ventilation mode. There is. Here, the control means 27 is based on the air quality of the room 500 as the air volume of the ventilation device 4 in the automatic ventilation mode before being switched to the manual ventilation mode based on the user's setting operation on the operation unit 44 of the ventilation device 4. It is configured to adopt the air volume of the ventilation device 4 (air quality interlocking air volume). Further, the control means 27 is configured to adjust the air quality interlocking air volume as the air volume of the ventilation device 4 in the new automatic ventilation mode.

Further, if the user's setting operation is newly performed before the predetermined time elapses after the control means 27 is switched to the manual ventilation mode, the newly performed user is performed after the predetermined time elapses. Based on the air volume difference between the set air volume according to the setting operation of and the air volume of the ventilation device 4 (air quality interlocking air volume) in the automatic ventilation mode before switching to the manual ventilation mode, a new automatic after a predetermined time elapses. It is configured to adjust the air volume (air quality interlocking air volume) of the ventilation device 4 in the ventilation mode. That is, the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode is adjusted according to the user's last setting operation performed in the manual ventilation mode.

(Acquisition of learning addition points)
At this time, the control means 27 is configured to acquire the learning addition points based on the air volume difference by using the learning addition point map shown in FIG. The learning addition point map describes the learning addition points that reflect the difference between the air quality-linked air volume in the automatic ventilation mode before switching and the set air volume in the manual ventilation mode after switching. For example, in the first case where the air quality interlocking air volume is "strong" and the set air volume is "weak", "-2" is acquired as the learning addition point. Further, for example, in the second case where the air quality interlocking air volume is "strong" and the set air volume is "medium", "-1" is acquired as the learning addition point. Further, for example, in the third case where the air quality interlocking air volume is "weak" and the set air volume is "strong", "+1" is acquired as the learning addition point.

Here, the learning addition point is set so that the absolute value increases as the difference between the air quality-linked air volume in the automatic ventilation mode before switching and the set air volume in the manual ventilation mode after switching increases. Has been done. For example, the first case where the air quality interlocking air volume is "strong" and the set air volume is "weak" is higher than the second case where the air quality interlocking air volume is "strong" and the set air volume is "medium". The air volume difference is large. Therefore, the absolute value of the learning addition point in the first case is "2", which is set to be larger than the absolute value "1" of the learning addition point in the second case.

Further, the absolute value of the learning addition point when the set air volume in the manual ventilation mode after switching is smaller than the air volume (air quality interlocking air volume) of the ventilation device 4 in the automatic ventilation mode before switching is the absolute value in the automatic ventilation mode. The learning addition points are set so as to be larger than the absolute value of the learning addition points when the set air volume in the manual ventilation mode is larger than the air volume (air quality interlocking air volume) of the ventilation device 4. For example, the first case where the air quality interlocking air volume is "strong" and the set air volume is "weak", and the third case where the air quality interlocking air volume is "weak" and the set air volume is "strong". The air quality interlocking air volume and the set air volume are reversed. Here, the absolute value (= 2) of the learning addition point in the first case where the set air volume is smaller than the air quality interlocking air volume is the absolute value (= 2) of the learning addition point in the third case where the set air volume is larger than the air quality interlocking air volume. The learning addition points are set so as to be larger than = 1).

(Update of air quality interlocking air volume)
The control means 27 is configured to update the air quality-linked air volume based on the air quality-linked air volume map shown in FIG. 3 and the acquired learning addition points. For example, in the first case where the air quality interlocking air volume is “strong” and the set air volume is “weak”, the acquired learning addition point is “-2”. In this case, based on the air quality interlocking air volume map, when the air quality level is level 0 or 1, the air quality interlocking air volume is "OFF", and when the air quality level is level 2, 3 or 4. The air quality-linked air volume is "weak", and when the air quality level is level 5, the air quality-linked air volume is updated so that the air quality-linked air volume is "medium". Then, the control means 27 is configured to adjust the air volume (actual air volume) of the ventilation device 4 based on the updated air quality interlocking air volume and the cooker interlocking air volume described above in the automatic operation mode. ..

(Control flow)
Next, the control flow of the ventilation system 1 according to the embodiment of the present invention will be described with reference to FIGS. 2 and 6. This control flow is executed by the control means 27 of the detection device 2.

In the control flow of the ventilation system 1, as shown in FIG. 6, in step S1, the control means 27 acquires the air quality level (any of levels 0 to 5) based on the detection result from the air quality sensor 214. Will be done. In step S2, the control means 27 acquires the air quality-linked air volume according to the air quality level based on the air quality-linked air volume map shown in FIG. 3 and the learning addition points. The learning addition point in the initial state is "0".

In step S3, the cooker-linked air volume according to the drive state of the cooker 3 is increased by the control means 27 based on the drive state (including the non-drive state) of the cooker 3 received via the communication units 32 and 24. To be acquired.

In step S4, the control means 27 acquires the actual air volume based on the actual air volume map shown in FIG. 4, the cooker-linked air volume, and the air quality-linked air volume. As the actual air volume, a larger air volume is adopted among the cooker-linked air volume and the air quality-linked air volume.

In step S5, the air volume of the ventilation device 4 is adjusted by the control means 27 so as to be the acquired actual air volume.

In step S6, the control means 27 determines whether or not the user has performed the air volume setting operation. If it is determined that the air volume setting operation has not been performed, the process returns to step S1. The control flow in steps S1 to S6 is a control flow in the automatic ventilation mode.

When it is determined that the air volume setting operation has been performed, the automatic ventilation mode is switched to the manual ventilation mode, and in step S7, the control means 27 is used to set the air volume according to the user's setting operation. The air volume of 4 is adjusted.

In step S8, the drive of the cooker 3 has not been changed by the control means 27, or all the drives of the right stove 311, the rear stove 312, the left stove 313, and the grill 314 of the cooker 3 have not been driven. It is determined whether or not it has been changed (the cooker 3 has been changed to undriven). If it is determined that the drive of the cooker 3 has not been changed, or that the cooker 3 has been changed to undriven, the process proceeds to step S10. When it is determined that the drive of the cooker 3 has been changed (except when the cooker 3 has been changed to undriven), in step S9, it corresponds to the drive state of the cooker changed by the control means 27. The air volume of the ventilation device 4 is adjusted so that the air volume is linked to the cooker.

In step S10, the control means 27 determines whether or not the user has newly performed the air volume setting operation. When it is determined that a new air volume setting operation has been performed, in step S11, the control means 27 adjusts the air volume of the ventilation device 4 so that the set air volume is set according to the new setting operation by the user. To. Then, the process returns to step S8.

If it is determined in step S10 that the setting operation has not been performed again, in step S12, the control means 27 determines whether or not a predetermined time has elapsed from the setting operation by the user. When the user has performed the setting operation a plurality of times, the control means 27 determines whether or not a predetermined time has elapsed from the first setting operation. If it is determined that the predetermined time has not elapsed from the setting operation by the user, the process returns to step S8.

When it is determined that a predetermined time has elapsed from the setting operation by the user, the manual ventilation mode is switched to the automatic ventilation mode, and in step S13, the air is aired by the control means 27 based on the learning addition point map shown in FIG. Learning addition points are acquired according to the difference in air volume between the quality-linked air volume and the set air volume. In the manual ventilation mode, when the user has performed the setting operation a plurality of times, the set air volume corresponding to the last setting operation is used.

Then, returning to step S1, the air quality level is acquired by the control means 27, and in step S2, the air corresponding to the air quality level is obtained based on the air quality interlocking air volume map and the learning addition points acquired in step S13. The quality-linked air volume is acquired. Then, the control means 27 controls after step S3.

(Effect of this embodiment)
In this embodiment, the following effects can be obtained.

In the present embodiment, as described above, when the control means 27 is switched to the manual ventilation mode based on the user's setting operation on the operation unit 44 while the automatic ventilation mode is being executed, the manual ventilation mode is set to the manual ventilation mode for a predetermined time. At the same time, after a lapse of a predetermined time, the automatic ventilation mode is newly executed with the air volume (air quality interlocking air volume) based on the set air volume of the ventilation device 4 according to the user's set operation. As a result, the air volume (air quality interlocking air volume) in the automatic ventilation mode according to the state of the indoor equipment becomes the air volume based on the set air volume based on the user's setting operation on the operation unit 44 (air quality interlocking air volume). The user's setting operation when the ventilation mode is set can be reflected in the air volume (air quality interlocking air volume) in the new automatic ventilation mode. As a result, the user's intention (preference) can be reflected in the air volume in the new automatic ventilation mode (air quality interlocking air volume according to the air quality detection state of the detection device 2), so that the automatic operation is performed after the manual operation. In this case, the automatic operation can be appropriately performed according to the intention of the user.

Further, in the present embodiment, the control means 27 is switched with the air volume (air quality interlocking air volume) of the ventilation device 4 in the automatic ventilation mode before being switched to the manual ventilation mode based on the operation set by the user on the operation unit 44. The air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode after a predetermined time elapses is adjusted based on the difference in air volume from the set air volume of the ventilation device 4 according to the user's setting operation after the operation. Configure to do. As a result, the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode is adjusted based on the air volume difference, so that it corresponds to the set air volume intended by the user and the air quality detection state of the detection device 2. The deviation from the air quality-linked air volume can be reliably reflected in the air volume (air quality-linked air volume) of the ventilation device 4 in the new automatic ventilation mode. As a result, it is possible to surely suppress that the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode becomes an air volume (air quality interlocking air volume) different from the user's intention (preference).

Further, in the present embodiment, the control means 27 corresponds to the air volume difference between the air quality interlocking air volume and the set air volume, and a predetermined time elapses based on the learning addition point in which the absolute value increases as the air volume difference increases. It is configured to adjust the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode later. As a result, the user's intention (preference) can be easily quantified by using the learning addition points corresponding to the air volume difference, so that the user can use the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode. Can easily reflect the intention (preference) of. In addition, by setting the absolute value of the learning addition point to increase as the air volume difference increases, the magnitude of the air volume difference is reflected in the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode. Can be made to. As a result, the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode (automatic operation mode) can be appropriately brought close to the air volume intended by the user.

Further, in the present embodiment, the learning addition point when the set air volume of the ventilation device 4 according to the user's setting operation after switching is smaller than the air volume of the ventilation device 4 in the automatic ventilation mode (air quality interlocking air volume). The absolute value is from the air volume of the ventilation device 4 in the automatic ventilation mode (air quality interlocking air volume), and from the absolute value of the learning addition point when the set air volume of the ventilation device 4 according to the user's setting operation after switching is large. Also increase. As a result, the setting operation for reducing the set air volume by the user can be reflected more greatly in the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode than the setting operation for increasing the set air volume by the user. .. As a result, it is possible to reduce the frequency with which the user manually performs the setting operation again after the automatic ventilation mode (after automatic operation).

Further, in the present embodiment, the control means 27 becomes the cooker-linked air volume according to the driving state of the cooker 3 or the air quality-linked air volume according to the air quality detection state of the detection device 2 in the automatic ventilation mode. As described above, the ventilation device 4 is configured to adjust the air volume (actual air volume). Then, the control means 27 is set to the air volume according to the air quality detection state of the detection device 2 and the set air volume of the ventilation device 4 according to the user's setting operation in the new automatic ventilation mode after the lapse of a predetermined time. The air volume of the ventilation device 4 (air quality interlocking air volume) is adjusted so as to be based on the air volume. As a result, in the new automatic ventilation mode, the user's intention (preference) can be reflected in the air quality interlocking air volume according to the air quality detection state of the detection device 2.

Further, in the present embodiment, in the automatic ventilation mode, the control means 27 has a cooker-linked air volume according to the driving state of the cooker 3 and an air quality-linked air volume according to the air quality detection state of the detection device 2. , Whichever is larger is adopted, and the air volume (actual air volume) of the ventilation device 4 is adjusted so as to be the adopted air volume. As a result, the air volume (actual air volume) of the ventilation device 4 becomes smaller than the cooker-linked air volume according to the driving state of the cooker 3 and the air quality-linked air volume according to the air quality detection state of the detection device 2. It can be suppressed from becoming. As a result, the air volume required for driving the cooker 3 can be reliably supplied, and the deterioration of the air quality in the room can be suppressed.

Further, in the present embodiment, the user is set to the operation unit 44 while the control means 27 is executing the manual ventilation mode for a predetermined time with an air volume corresponding to the user's setting operation when the control means 27 is switched to the manual ventilation mode. When a new operation is performed, after a predetermined time has elapsed, the automatic ventilation mode is set with the air volume (air quality interlocking air volume) based on the set air volume of the ventilation device 4 according to the newly performed user setting operation. Is configured to be newly executed. With this configuration, the latest intention (preference) of the user can be reliably reflected in the air volume (air quality interlocking air volume) of the ventilation device 4 in the new automatic ventilation mode.

(Modification example)
It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.

For example, in the above embodiment, the ventilation system 1 includes a detection device 2 including a control means 27, a cooker 3, and a ventilation device 4 (ventilation means), but the present invention is limited to this. Absent. For example, the ventilation system may be configured to include only a detection device including control means and ventilation means. In addition, the ventilation system may include a detection device, a cooker, and a device other than the ventilation device.

Further, in the above embodiment, an example is shown in which the control means 27 for substantially controlling the ventilation system 1 (control flow shown in FIG. 6) is built in the detection device 2, but the present invention is limited to this. I can't. In the present invention, the control means does not have to be built in the detection device. That is, the control means may be provided in a device provided separately from the detection device. Specifically, the ventilation system may be substantially controlled by the control means of the cooker or the control means of the ventilation equipment. Further, the ventilation system may be substantially controlled by a control means other than the detection device, the cooker and the ventilation device.

Further, in the above embodiment, the control means 27 interlocks the air quality of the ventilation device 4 (ventilation means) in the new automatic ventilation mode (first ventilation mode) based on the difference between the air quality interlocking air volume and the set air volume. An example of adjusting the air volume has been shown, but the present invention is not limited to this. For example, the control means may adjust the cooker-linked air volume of the ventilation means in the new automatic ventilation mode based on the air volume difference between the cooker-linked air volume and the set air volume. In this case, in the new first ventilation mode, the difference in air volume is reflected when the air volume linked to the cooker of the ventilation means is increased, while the difference in air volume is reflected when the air volume linked to the cooker of the ventilation means is decreased. It is preferable to configure the ventilation system so that it does not occur. As a result, the amount of air supplied to the cooker is reduced, and while suppressing the instability of combustion in the cooker, it is possible to reflect the user's preference to the cooker-linked air volume of the ventilation means to some extent. Is.

Further, the control means is based on both the cooker-linked air volume based on the air volume difference between the cooker-linked air volume and the set air volume and the air quality-linked air volume based on the air quality-linked air volume difference between the air quality-linked air volume and the set air volume. , May be configured to adjust the air volume of the ventilation means in the new first ventilation mode.

Further, in the above embodiment, the control means 27 uses the ventilation device 4 (ventilation) in the new automatic ventilation mode (first ventilation mode) based on the learning addition points corresponding to the air volume difference between the air quality interlocking air volume and the set air volume. An example of adjusting the air volume (air quality interlocking air volume) of the means) has been shown, but the present invention is not limited to this. In the present invention, the control means may reflect the difference in air volume between the air quality-linked air volume and the set air volume in the air volume of the ventilation means in the new first ventilation mode by a method other than the learning addition point.

Further, in the above embodiment, the control means 27 learns the air quality-linked air volume, the actual air volume, and the learning based on the air quality-linked air volume map, the actual air volume map, and the learning addition point map stored in the storage means 28, respectively. An example of obtaining additional points has been shown, but the present invention is not limited to this. In the present invention, the control means may acquire the air quality-linked air volume, the actual air volume, or the learning addition point by a method other than the map such as a calculation formula.

Further, in the above embodiment, the control means 27 is set in the automatic ventilation mode (first ventilation mode) with the cooker-linked air volume according to the driving state of the cooker 3 and the air quality of the detection device 2 (air quality detection device). Of the air quality-linked air volume according to the detection state, whichever is larger is adopted, and the air volume (actual air volume) of the ventilation device 4 (ventilation means) is adjusted so as to be the adopted air volume. Although an example is shown, the present invention is not limited to this. For example, the control means may acquire the average air volume of the cooker-linked air volume and the air quality-linked air volume in the first ventilation mode, and adjust the air volume of the ventilation device 4 so as to obtain the acquired air volume. ..

Further, in the above embodiment, the control means 27 is used as a ventilation device 4 (ventilation) in a new automatic ventilation mode (first ventilation mode) after a predetermined time elapses, based on the difference between the air quality interlocking air volume and the set air volume. An example is shown in which the air quality-linked air volume of the means) is adjusted, but the present invention is not limited to this. In the present invention, the control means is configured to adjust the air volume of the ventilation means in the new first ventilation mode after a predetermined time elapses, based on parameters other than the air volume difference between the air quality interlocking air volume and the set air volume. You may. For example, the control means may be configured to adjust the air volume of the ventilation means in the new first ventilation mode after a predetermined time elapses, based on the magnitude of the ratio of the air quality interlocking air volume to the set air volume. ..

Further, in the above embodiment, the air volume of the ventilation device 4 (ventilation means) is divided into four stages (“OFF”, “weak”, “medium”, and “strong”) according to the magnitude of the air volume. As shown, the present invention is not limited to this. In the present invention, the air volume of the ventilation means may be divided into a plurality of stages other than the four stages according to the magnitude of the air volume. The air volume of the ventilation means is preferably divided into a plurality of stages (“OFF”, “weak”, “strong”) or more. Further, the ventilation means may be configured so that the air volume is continuously switched instead of being configured so that the air volume is switched stepwise. By continuously changing the rotation speed of the ventilation means (fan unit) according to the difference in air volume (learning addition point), it is possible to configure the ventilation means so that the magnitude of the air volume is continuously switched. is there.

Further, in the above embodiment, in the learning addition point map shown in FIG. 5, as the air volume difference between the air quality interlocking air volume in the automatic ventilation mode before switching and the set air volume in the manual ventilation mode after switching increases. , An example in which the learning addition points are set so that the absolute value of the learning addition points becomes large is shown, but the learning addition points shown in the learning addition point map shown in FIG. 5 are an example, and the present invention is limited to this. Absent.

Further, in the above embodiment, in the learning addition point map shown in FIG. 5, the learning addition point when the set air volume in the manual ventilation mode after switching is smaller than the air quality interlocking air volume in the automatic ventilation mode before switching. An example in which the learning addition points are set so that the absolute value becomes larger than the absolute value of the learning addition points when the set air volume is larger than the air quality-linked air volume is shown in the learning addition point map shown in FIG. The learning addition points obtained are an example, and the present invention is not limited to this. For example, the absolute value of the learning addition point when the set air volume is smaller than the air quality interlocking air volume may be equal to the absolute value of the learning addition point when the set air volume is larger than the air quality interlocking air volume.

Further, in the above embodiment, an example in which the operation unit 44 of the ventilation device 4 is used as the "air volume setting means" in the claims is shown, but the present invention is not limited to this. In the present invention, the operating means provided in the device (detection device or cooker) other than the ventilation device may be used as the air volume setting means for accepting the user's setting operation regarding the set air volume of the ventilation device. Further, the ventilation system may be provided with a remote controller that accepts a user's setting operation regarding the set air volume of the ventilation device.

Further, in the above embodiment, various sensors 21 of the detection device 2 have shown an example including a smoke sensor 211, a gas sensor 212, a CO sensor 213 and an air quality sensor 214, but the present invention is not limited to this. In the present invention, the various sensors mounted on the detection device are not limited to the configuration including the above-mentioned smoke sensor, gas sensor, CO sensor and air quality sensor. For example, the detection device may or may not include a CO sensor. Further, for example, various sensors mounted on the detection device may be configured to include a sensor other than a smoke sensor, a gas sensor, a CO sensor, and an air quality sensor.

Further, in addition to the configuration of the above embodiment, the detection device is configured so that the learning addition point is reset (returns to the initial state) when a predetermined condition is satisfied (for example, the power of the detection device is turned off). You may. In this case, for example, the detection device may be configured to reset the learning addition point when the power of the detection device is turned off during the execution of the manual ventilation mode (second ventilation mode). In this case, the air volume of the ventilation device (ventilation means) in the new automatic ventilation mode (first ventilation mode) is set based on the cooker-linked air volume and the air quality-linked air volume that does not consider the learning addition point.

Further, in the above embodiment, when the user's setting operation is newly performed during the execution of the manual ventilation mode (second ventilation mode), the manual ventilation mode is predetermined after receiving the user's first setting operation. However, the present invention is not limited to this. In the present invention, when the user's setting operation is newly performed during the execution of the second ventilation mode, the second ventilation mode is configured to be performed for a predetermined time after receiving the user's last setting operation. You may.

Further, in the above embodiment, the control means 27 adjusts the air volume (air quality interlocking air volume) of the ventilation device 4 (ventilation means) in the new automatic ventilation mode (first ventilation mode) based on the acquired learning addition points. However, the present invention is not limited to this. In the present invention, the control means may be configured to adjust the air volume of the ventilation means in the new first ventilation mode based on the adjustment elements other than the acquired learning addition points. For example, the adjustment element is the value obtained by integrating all the learned learning addition points stored in the past and the acquired learning addition points, or the value obtained by averaging the past learning addition points and the acquired learning addition points. May be used as. In this case, the adjustment element may be reset under a predetermined condition (a predetermined switch operation or the like). Further, the value obtained by integrating the learning addition points within the predetermined period or the value obtained by averaging the learning addition points within the predetermined period may be used as the adjustment element.

1 Ventilation system 2 Detection equipment (indoor equipment, gas alarm )
3 Cooker (indoor equipment)
4 Ventilation equipment (ventilation means)
44 Operation unit (air volume setting means)
27 Control means 28 Storage means 500 Indoor

Claims (7)

A cooker, which is an indoor device placed indoors,
The indoor equipment, a gas alarm that detects the quality of the air in the room, and
Ventilation equipment that ventilates the air in the room and
An air volume setting means that accepts a user's setting operation regarding the air volume of the ventilation device, and
The first ventilation mode that adjusts the air volume of the ventilation device so that the air volume is adjusted according to the state of the indoor device, and the air volume of the ventilation device is adjusted so that the air volume is set according to the setting operation of the user. A control means configured to perform a second ventilation mode.
When the control means switches to the second ventilation mode based on the setting operation of the user to the air volume setting means during the execution of the first ventilation mode, the control means executes the second ventilation mode for a predetermined time. At the same time, after the lapse of the predetermined time, the second ventilation mode is switched to, and the first ventilation mode is newly executed with the air volume based on the set air volume of the ventilation device according to the setting operation of the user at the time of switching. Configured to
In the new first ventilation mode after the lapse of a predetermined time , the control means, in addition to the set air volume of the ventilation device according to the setting operation of the user, the driving state of the cooker and the gas. A ventilation system configured to adjust the air volume of the ventilator based on both the air quality detection status of the alarm. The control means is the air volume of the ventilation device in the first ventilation mode before being switched to the second ventilation mode based on the setting operation of the user to the air volume setting means, and the air volume of the user after being switched. It is configured to adjust the air volume of the ventilation device in the new first ventilation mode after the lapse of a predetermined time based on the air volume difference of the ventilation device from the set air volume according to the setting operation. The ventilation system according to claim 1. Further provided with a storage means in which the learning addition points whose absolute values increase as the air volume difference increases are stored.
The control means is configured to adjust the air volume of the ventilation device in the new first ventilation mode after the lapse of a predetermined time, based on the learning addition point corresponding to the air volume difference. Item 2. The ventilation system according to item 2. The absolute value of the learning addition point when the set air volume of the ventilation device according to the user's set operation after switching is smaller than the air volume of the ventilation device in the first ventilation mode is the first ventilation. The third aspect of claim 3, wherein the air volume of the ventilation device in the mode is larger than the absolute value of the learning addition point when the set air volume of the ventilation device according to the setting operation of the user after switching is larger. Ventilation system. The control means adjusts the air volume of the ventilation device so that the air volume corresponds to the driving state of the cooker or the air quality detection state of the gas alarm in the first ventilation mode. In the new first ventilation mode after the lapse of a predetermined time, the air volume according to the driving state of the cooker or the air quality detection state of the gas alarm is set. Claims 1 to 4 are configured to adjust the air volume of the ventilation device so that the air volume is the air volume and the air volume is based on the set air volume of the ventilation device according to the setting operation of the user. The ventilation system according to any one item. In the first ventilation mode, the control means employs the larger of the air volume according to the driving state of the cooker and the air volume according to the air quality detection state of the gas alarm. The ventilation system according to claim 5, wherein the ventilation system is configured to adjust the air volume of the ventilation device so as to obtain the adopted air volume. While the control means executes the second ventilation mode for the predetermined time with the air volume corresponding to the setting operation of the user when the second ventilation mode is switched to, the control means of the user to the air volume setting means. When the setting operation is newly performed, the first ventilation mode is the air volume based on the set air volume of the ventilation device according to the newly performed setting operation of the user after the lapse of the predetermined time. The ventilation system according to any one of claims 1 to 6, which is configured to newly execute the above.

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