JP3815498B2 - Ventilation control device - Google Patents

Description

  The present invention relates to a ventilation control device that discharges air in a kitchen space in which a plurality of cooking appliances are arranged to the outside, and particularly relates to a ventilation control device that changes the exhaust amount of an exhaust fan in accordance with the operating status of the cooking appliances. It is.

  Conventionally, ventilation devices for maintaining cleanliness or comfort of indoor spaces and the like are known. For example, this ventilator exhausts air in an indoor space to the outside with an exhaust fan or the like, while taking outdoor air corresponding to the discharged air into the room by natural air supply to ventilate the indoor space.

  By the way, when using the said ventilation apparatus, although ventilation of indoor air is satisfied, it may perform excessive ventilation. In this case, there is a problem that the power of the exhaust fan is wasted or the air conditioning load of the air conditioner arranged in this space is increased.

  As a prior art for solving this problem, there is a ventilation control device disclosed in Patent Document 1. This ventilation control device includes a temperature sensor serving as a detection unit, a control unit, and an exhaust fan. The temperature sensor is provided in a gas range that generates a ventilation object such as carbon dioxide or water vapor. The control unit is connected to the temperature sensor and the exhaust fan via cable wiring. And a control part is comprised so that the temperature change accompanying operation of a gas range may be detected with the said temperature sensor, and the exhaust air volume of an exhaust fan will be changed based on this detected temperature.

As described above, the ventilation control device disclosed in Patent Literature 1 detects the operating state of the gas range by the detection means including the temperature sensor, and performs ventilation according to the ventilation load of the indoor space. And this ventilation control apparatus is trying to reduce the power of an exhaust fan or the air-conditioning load of an air conditioner, ensuring the comfort of indoor space.
JP-A-62-213628

  By the way, as a space to which the ventilation control device is applied, a kitchen space of a restaurant such as a restaurant or a hotel is assumed. A kitchen space of such a store is often provided with a plurality of cooking appliances. In this case, it is necessary to discharge the ventilation target generated from all the cooking appliances to the outside of the room.

  Here, in order to perform ventilation control according to the operating condition of a plurality of cooking appliances using the above-described ventilation control device, it is considered necessary to provide detection means such as a temperature sensor for each of the plurality of cooking appliances. In this case, the number of detection means or parts (wiring, fixing member, converter, etc.) associated with the detection means increases, and this ventilation control device becomes complicated.

  On the other hand, when the detection means is arranged only for some of the cooking appliances, ventilation control corresponding to the operation status of all the cooking appliances cannot be performed, and the comfort of the kitchen space is continuously maintained. It can be difficult to maintain.

  The present invention has been made in view of the above points, and the object of the present invention is to maintain the comfort of the kitchen space in the ventilation control device that ventilates the kitchen space in which a plurality of cooking appliances are arranged. This is to reduce the number of detection means provided in the kitchen space.

The first invention is an exhaust means (20) for exhausting air in a kitchen space where a plurality of cooking appliances (a, b, c, d, e) are arranged, and a plurality of cooking appliances (a, b, c, d, e) are provided in some cooking appliances (d, e), detection means (31, 32) for detecting the operating status of the cooking appliances (d, e), and the exhaust means (20 ) And a control unit (40) for changing the exhaust air volume, and the control unit (40) is the minimum required exhaust of cooking equipment (a, b, c) that is not detected by the detection means (31, 32) The air volume setting unit (42) that arbitrarily sets the amount of air, and the minimum required exhaust air volume is always set as the lower limit during operation, and the exhaust air volume of the exhaust means (20) is determined based on the detection signal of the detection means (31, 32). An air volume changing unit (43) that increases or decreases above the lower limit.

  Here, the above “detection means” are those that directly detect the operating status of the cooking appliance (a, b, c) (the detection means for the energization state of the cooking appliance, the detection means for the gas consumption of the cooking appliance, cooking It may be a device for detecting the power consumption of the device) or may be a device that detects indirectly (temperature sensor, CO2 sensor, etc.).

  In the said 1st invention, a ventilation control apparatus is provided in the kitchen space where several cooking appliances (a, b, c, d, e) are arrange | positioned. Some cooking appliances (d, e) among a plurality of cooking appliances (a, b, c, d, e) have detection means (31,32) corresponding to these cooking appliances (d, e). Provided separately.

  Here, the control unit (40) of the present invention includes an air volume setting unit (42) for setting the minimum required exhaust amount of the cooking appliance (a, b, c) not supported by the detection means (31, 32). Provided. Note that the minimum required exhaust volume is the amount of heat generated from cooking equipment (a, b, c), the type of hood that collects ventilation objects generated from these cooking equipment (a, b, c), and cooking equipment. It is arbitrarily determined according to the distance to the hood.

  The air volume changing section (43) of the control section (40) sets the exhaust air volume in accordance with the detection signal of the detecting means (31, 32) at the same time while keeping the exhaust air volume of the exhaust means (20) above the minimum required exhaust air volume. Increase or decrease. Therefore, the detection means (31, 32) is always compatible with the cooking equipment (d, e) that the detection means (31, 32) supports, while ensuring the minimum required exhaust amount of the cooking equipment (a, b, c) that the detection means (31, 32) does not support. The exhaust air volume can be controlled in accordance with the operating status.

  According to a second aspect of the present invention, in the ventilation control device of the first aspect, the detection means includes a temperature sensor (31, 32) that detects the temperature in the vicinity of the cooking appliance (d, e), and the air volume changing unit (43 ) Uses the minimum required exhaust amount as a lower limit value, and increases or decreases the exhaust air volume of the exhaust means (20) above the lower limit value based on the temperature detected by the temperature sensor (31, 32).

  In the said 2nd invention, the temperature sensor (31, 32) for detecting the operating condition of a cooking appliance (d, e) is provided in the vicinity of a cooking appliance (d, e). In other words, the temperature sensor (31, 32) detects the temperature change in the vicinity of the cooking appliance (d, e) due to the operation of the cooking appliance (d, e), thereby operating the cooking appliance (d, e). Is detected. The air volume changing unit (43) increases or decreases the exhaust air volume in accordance with the detection signal of the temperature detecting means (31, 32) at the same time while setting the exhaust air volume of the exhaust means (20) to be equal to or higher than the minimum required exhaust air volume.

  According to a third aspect of the present invention, in the ventilation control device of the second aspect, the control unit (40) includes a calculation unit (41) that calculates an additional exhaust amount based on the temperature detected by the temperature sensor (31, 32). The air volume changing unit (43) is configured to set the sum of the minimum required exhaust gas volume and the additional exhaust gas volume as the exhaust air volume of the exhaust means (20). Here, the “additional exhaust amount” may be calculated stepwise or linearly corresponding to a change in temperature detected by the temperature sensor (31, 32), for example, a temperature sensor. It may be calculated by increasing / decreasing with (31, 32) temperature change (for example, temperature increase rate).

  In the third aspect, the calculation unit (41) performs additional exhaust according to the temperature detected by the temperature sensor (31, 32), that is, the operating status of the cooking appliance (d, e) corresponding to the temperature sensor (31, 32). Calculate the amount. Then, the air volume changing unit (43) calculates the sum of the minimum required exhaust gas volume set in the air volume setting unit (42) and the additional exhaust gas volume calculated by the calculating unit (41), and the exhaust air volume of the exhaust means (20). And Therefore, the exhaust air volume can be changed according to the operation status of the cooking appliance (d, e) while ensuring that the exhaust air volume of the exhaust means (20) is equal to or greater than the minimum required exhaust air volume.

  4th invention is the ventilation control apparatus of 3rd invention, The control part (40) is provided with the temperature setting part (45) by which the operating temperature which considers a cooking appliance (d, e) as an operation state is set, When the temperature detected by the temperature sensor (31, 32) is lower than the operating temperature, the calculating unit (41) sets the additional displacement to zero, while the temperature detected by the temperature sensor (31, 32) is the operating temperature. In the above case, the additional exhaust amount is set to a predetermined exhaust amount larger than zero.

  In the said 4th invention, the operating temperature for discriminating the presence or absence of operation of a cooking appliance (d, e) is set to the temperature setting part (45). Here, when the detected temperature of the temperature sensor (31, 32) is lower than the operating temperature, it is considered that the cooking appliance (d, e) corresponding to the temperature sensor (31, 32) is not operating, and the additional displacement is It becomes zero. On the other hand, when the detected temperature of the temperature sensor (31, 32) is equal to or higher than the operating temperature, it is considered that the cooking appliance (d, e) corresponding to the temperature sensor (31, 32) is operating, and the additional displacement is predetermined. Displacement amount. That is, in the present invention, whether or not the cooking appliance (d, e) is operated is determined according to the temperature detected by the temperature sensor (31, 32), and the exhaust air volume of the exhaust means (20) is stepwise according to this. Be controlled.

  According to a fifth aspect of the present invention, in the ventilation control device according to the third aspect, the temperature sensor includes a plurality of temperature sensors (31, 32) corresponding to the plurality of cooking appliances (d, e). 31 and 32) have an input unit (44a) connected in series or in parallel, and a conversion unit that converts detection signals from the plurality of temperature sensors (31, 32) and transmits the converted signals to the calculation unit (41) 44).

  In the fifth invention, the temperature sensors (31, 32) are connected to one input section (44a) by serial wiring or parallel wiring. Therefore, electrical signals (for example, potential differences of the plurality of temperature sensors) from the plurality of temperature sensors (31, 32) are input to the conversion unit (44) as one signal.

  Specifically, for example, when two temperature sensors (31, 32) are connected in series to the input unit (44a), the input unit (44a) is generated by the first temperature sensor (31). The sum of the potential difference V1 and the potential difference V2 generated by the second temperature sensor (32) is input. For this reason, the detection temperature T which is the sum of the detection temperature T1 of the first temperature sensor (31) and the detection temperature T2 of the second temperature sensor (32) is transmitted to the calculation unit (41). Therefore, the additional exhaust amount can be determined based on the detected temperature T, and the exhaust air amount of the exhaust means (20) can be changed.

  For example, when two temperature sensors (31, 32) are connected in parallel to the input unit (44a), the input unit (44a) has a potential difference V1 generated by the first temperature sensor (31). And the average value of the potential difference V2 generated by the second temperature sensor (32). For this reason, the average detected temperature T of the detected temperature T1 of the first temperature sensor (31) and the detected temperature T2 of the second temperature sensor (32) is transmitted to the calculating unit (41). Therefore, the additional exhaust amount can be determined based on the detected temperature T, and the exhaust air amount of the exhaust means (20) can be changed.

  A sixth invention is the ventilation control device according to any one of the second to fifth inventions, wherein the temperature sensor (31, 32) is rated among the plurality of cooking appliances (a, b, c, d, e). It is provided in cooking appliances (d, e) that generate a large amount of heat.

  In the sixth aspect of the invention, the temperature sensor (31, 32) is provided in the cooking appliance (d, e) having a large rated calorific value among the plurality of cooking appliances (a, b, c, d, e). The minimum required exhaust amount set in accordance with the amount of heat generated by the cooking appliance (a, b, c) not supported by the sensor (31, 32) can be reduced.

  7th invention is the ventilation control apparatus of 1st invention. WHEREIN: A detection means is comprised by the energization amount detection means (51,52) which detects the energization amount of a cooking appliance (d, e), and an air volume change part ( 43) sets the minimum required exhaust amount as a lower limit value, and increases or decreases the exhaust air volume of the exhaust means (20) above the lower limit value based on the detected energization amount of the energization amount detection means (51, 52).

  In the seventh aspect of the invention, the energization amount detecting means (51, 52) for detecting the operating status of the cooking appliance (d, e) made up of an electric cooking appliance such as an electromagnetic cooking appliance or an electric oven is provided. In other words, the energization amount detection means (51, 52) detects the change in the energization amount of the cooking appliance (d, e) due to the operation of the cooking appliance (d, e), so that the cooking appliance (d, e) Detect the operating status. In addition, the amount of heat generated by the cooking appliance (a, b, c) that is not subject to detection by the energization detection means (51, 52) and the ventilation target generated from these cooking appliances (a, b, c) The minimum required exhaust air volume is determined according to the type of hood to be collected and the distance from the cooking device to the hood. The air volume changing unit (43) increases or decreases the exhaust air volume according to the detection signal of the energization amount detecting means (51, 52) at the same time while setting the exhaust air volume of the exhaust means (20) to be equal to or higher than the minimum required exhaust air volume. .

  According to an eighth aspect of the present invention, in the ventilation control device of the seventh aspect, the energization amount detecting means (51) is configured to detect a total value of the energization amounts of the plurality of cooking appliances (d, e), and the air volume change The unit (43) uses the minimum required exhaust amount as a lower limit, and based on the total value of the energization amounts of the plurality of cooking appliances (d, e) detected by the energization amount detection unit (51), the exhaust unit (20 ) To increase or decrease the exhaust air volume above the lower limit.

  In 8th invention, about the some cooking appliance (d, e) used as the detection object of an energization amount detection means (51), the total value of the energization amount of these cooking appliances (d, e) is obtained. 51) detects. Then, the air volume changing unit (43) makes the exhaust air volume of the exhaust means (20) equal to or more than the minimum required exhaust air volume, and at the same time, according to the total value of the energization quantities detected by the energization quantity detecting means (51, 52) Increase or decrease the exhaust air volume.

  According to a ninth aspect of the present invention, in the ventilation control device of the first aspect, the detection means includes gas detection means (61, 62) for detecting the amount of gas used by the cooking appliance (d, e), and an air volume changing unit ( 43) sets the minimum required exhaust amount as a lower limit value, and increases or decreases the exhaust air volume of the exhaust means (20) above the lower limit value based on the detected gas usage amount of the gas detection means (61, 62).

In 9th invention, the gas detection means (61, 62) for detecting the operating condition of the cooking appliances (e, f) which consist of gas cooking appliances, such as a gas stove and a gas range, for example is provided. That is, the gas detection means (61, 62) detects the change in the amount of gas used by the cooking appliance (e, f) accompanying the operation of the cooking appliance (e, f), so that the cooking appliance (e, f) Detect the operating status. It also captures the amount of heat generated by the cooking appliances (a, b, c) that are not detected by the gas detection means (61, 62), and ventilation objects generated from these cooking appliances (a, b, c). The minimum required exhaust air volume is determined according to the type of hood to be collected and the distance from the cooking device to the hood. The air volume changing unit (43) increases or decreases the exhaust air volume according to the detection signal of the gas detecting means (61, 62) at the same time while setting the exhaust air volume of the exhaust means (20) to be equal to or higher than the minimum required exhaust air volume .

  According to the first aspect of the invention, the exhaust air volume of the exhaust means (20) is always set to be equal to or greater than the minimum required exhaust air volume, and the exhaust air volume of the exhaust means (20) is further reduced based on the detection signal of the detection means (31, 32). Increase or decrease. For this reason, while ensuring the minimum necessary exhaust of cooking appliances (a, b, c) not supported by the detection means (31, 32), the cooking appliances (d, e) supported by the detection means (31, 32) Ventilation control of the exhaust means (20) taking into account the operational status of Therefore, the number of detection means can be reduced while maintaining the comfort of the kitchen space. In addition, it is possible to suppress an increase in the air conditioning load of the air conditioner applied to the kitchen space due to excessive ventilation or waste of the power of the exhaust means (20).

  According to the second aspect, the temperature sensor (31, 32) is used as the detection means for detecting the operating status of the cooking appliance (d, e). For this reason, a detection means can be comprised comparatively cheaply and simply, and the operating condition of a cooking appliance (d, e) can be detected easily and reliably.

  According to the third aspect, the additional displacement calculated by the calculation unit (41) based on the temperature detected by the temperature sensor (31, 32) and the minimum required displacement set by the air volume setting unit (42). Is the exhaust air volume of the exhaust means (20). For this reason, the exhaust air volume of the exhaust means (20) can be surely set to be equal to or greater than the minimum required exhaust air volume.

  According to the fourth aspect of the present invention, when the detected temperature of the temperature sensor (31, 32) becomes lower than the operating temperature, the additional exhaust amount is set to zero, that is, the exhaust air volume of the exhaust means (20) is set to only the necessary minimum exhaust amount. On the other hand, when the detected temperature of the temperature sensor (31, 32) is equal to or higher than the operating temperature, the additional exhaust amount is set as a predetermined exhaust amount, and the exhaust air amount of the exhaust means (20) is set larger than the necessary minimum exhaust amount. . Therefore, it is possible to easily determine whether or not the cooking appliance (d, e) is operating, and it is possible to reliably change the amount of exhaust air according to the operating status of these cooking appliances (d, e).

  According to the fifth aspect of the invention, the plurality of temperature sensors (31, 32) are connected in series or in parallel to one input section (44a). The calculating unit (41) can determine the additional exhaust amount based on the sum or average value of the detected temperatures of the plurality of temperature sensors (31, 32). For this reason, ventilation control according to the operating condition of the cooking appliance (d, e) corresponding to the temperature sensor (31, 32) is performed while reducing the number of input units corresponding to the temperature sensor (31, 32). Can do.

  According to the sixth aspect of the invention, the temperature sensor (31, 32) is disposed in the cooking appliance (d, e) having a large rated calorific value among the plurality of cooking appliances (a, b, c, d, e). Thus, the minimum required displacement can be reduced. Therefore, it is possible to reduce the power of the exhaust means (20) or reduce the air conditioning load of the air conditioner provided in the kitchen space.

  According to the seventh aspect, the energization amount detection means (51, 52) is used as the detection means for detecting the operating status of the cooking appliance (d, e). And while ensuring the necessary minimum exhaust of the cooking appliances (a, b, c) not supported by the energization amount detection means (51, 52), the corresponding cooking appliances (d, d) , e) Ventilation control that considers the operation status is made possible. Therefore, in a kitchen space where an electric cooking device such as an electromagnetic cooking device or an electric oven is arranged, the number of energization detecting means can be reduced while maintaining the comfort of the kitchen space.

  According to the eighth aspect of the invention, for the cooking appliance (d, e) to be detected by the energization amount detecting means (51), the exhaust amount is reduced based on the total energization amount of the cooking appliance (d, e). I am trying to change it. Therefore, ventilation control that takes into account the operating status of multiple cooking appliances (d, e) can be achieved simply by providing a smaller quantity of energization detection means (51) for multiple cooking appliances (d, e). It can be carried out. That is, the number of energization detection means can be further reduced in the kitchen space where the electric cooking device is arranged.

According to the ninth aspect, the gas detection means (61, 62) is used as the detection means for detecting the operating status of the cooking appliance (e, f). And while ensuring the necessary minimum exhaust of the cooking equipment (a, b, c, d) not supported by the gas detection means (61, 62), the corresponding cooking equipment (e , f) Ventilation control can be performed taking into account the operating status. Therefore, in a kitchen space where gas cooking devices such as a gas stove and a gas range are arranged, the number of the gas detection means can be reduced while maintaining the comfort of the kitchen space .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1 of the Invention
As shown in FIG. 1, the ventilation control device (10) according to the first embodiment ventilates a kitchen space such as a restaurant or a hotel. This ventilation control device (10) discharges air containing ventilation objects (carbon dioxide, water vapor, odorous substances, etc.) generated when using a plurality of cooking appliances to the outside of the room. In the present embodiment, five cooking appliances (a, b, c, d, e) are provided in the kitchen space.

  The ventilation control device (10) includes a duct (15), an exhaust fan (20), a temperature sensor (31, 32), and a control unit (40).

  The duct (15) constitutes an air passage until the air in the kitchen space is discharged outside the room. The duct (15) has a lower end opened on the ceiling surface of the kitchen space, and an upper end opened outside the room. A hood (11) is provided at the lower end of the duct (15). The hood (11) is located above the cooking equipment (a, b, c, d, e) and is disposed across the cooking equipment (a, b, c, d, e). And the food | hood (11) is comprised so that the ventilation target object which generate | occur | produces from these cooking appliances (a, b, c, d, e) can be collected.

  The exhaust fan (20) constitutes exhaust means for pumping the air in the kitchen space and discharging it outside the room. The exhaust fan (20) is disposed in an air passage inside the duct (15).

  The temperature sensor (31, 32) detects the temperature in the vicinity of the corresponding cooking appliance (d, e). In the present embodiment, the temperature sensor includes a first temperature sensor (31) and a second temperature sensor (32). The first temperature sensor (31) is disposed in the vicinity of the cooking appliance (d). That is, the 1st temperature sensor (31) is arranged corresponding to cooking appliance (d), and constitutes the detecting means which detects the operating condition of cooking appliance (d). Moreover, the 2nd temperature sensor (32) is arrange | positioned in the vicinity of the cooking appliance (e). That is, the 2nd temperature sensor (32) is arranged corresponding to cooking appliance (e), and constitutes the detecting means which detects the operating condition of cooking appliance (e). In addition, the cooking appliances (d, e) in which the first and second temperature sensors (31, 32) are respectively arranged are cooking appliances having a large rated calorific value among the cooking appliances (a, b, c, d, e). It has become.

  The control unit (40) changes the exhaust air volume of the exhaust fan (20) based on the detection signal of the temperature sensor (31, 32). The control unit (40) includes a calculation unit (41), an air volume setting unit (42), an air volume changing unit (43), a conversion unit (44), and a temperature setting unit (45).

  The conversion unit (44) receives the detection signal of the temperature sensor (31, 32), converts the detection signal into a predetermined signal, and then transmits the conversion signal to the calculation unit (41). In the present embodiment, the conversion unit (44) includes a first input unit (44a) and a second input unit (44b). The first temperature sensor (31) is connected to the first input section (44a) via cable wiring. The second temperature sensor (32) is connected to the second input section (44b) via cable wiring. The conversion unit (44) receives the detection signals of the temperature sensors (31, 32) at the respective input units (44a, 44b), and then outputs these conversion signals to the calculation unit (41).

  The temperature setting unit (45) sets a reference temperature (operating temperature) for determining whether or not the cooking appliance (d, e) corresponding to the temperature sensor (31, 32) is operating. Specifically, the temperature setting unit (45) corresponds to the first operating temperature that is the operating temperature of the cooking appliance (d) corresponding to the first temperature sensor (31) and the second temperature sensor (32). The 2nd operating temperature used as the temperature at the time of operation of the cooking appliance (e) to perform is set. In addition, you may set these operating temperatures in the temperature setting part a little lower than the temperature at the time of operation of an actual cooking appliance.

  The calculation unit (41) determines an additional displacement based on the temperature detected by the temperature sensor (31, 32). In the present embodiment, the calculation unit (41) determines the first additional displacement based on the conversion signal of the first temperature sensor (31) and the second additional displacement based on the conversion signal of the second temperature sensor (32). To do. Specifically, when the temperature detected by the first temperature sensor (31) is lower than the first operating temperature, the calculation unit (41) regards the cooking appliance (d) as being stopped and sets the first additional displacement to zero. And On the other hand, when the temperature detected by the first temperature sensor (31) is equal to or higher than the first operating temperature, the calculation unit (41) regards the cooking appliance (d) as operating and sets the first additional exhaust amount to Q1. . Q1 is set to an exhaust amount that can sufficiently exhaust a ventilation target generated during operation of the cooking appliance (d) to the outside of the room. In addition, when the temperature detected by the second temperature sensor (32) is lower than the second operating temperature, the calculation unit (41) regards the cooking appliance (e) as being stopped and sets the second additional exhaust amount to zero. . On the other hand, when the temperature detected by the second temperature sensor (32) is equal to or higher than the second operating temperature, the calculating unit (41) regards the cooking appliance (e) as operating and sets the second additional exhaust amount to Q2. . Q2 is set to an exhaust amount that can sufficiently exhaust a ventilation target generated during operation of the cooking appliance (e) to the outside of the room.

The air volume setting unit (42) is configured to set the minimum required exhaust amount of the cooking appliance (a, b, c) not supported by the temperature sensor (31, 32). This minimum required exhaust amount is such that when the cooking appliances (a, b, c) are in operation, the exhaust amount that can sufficiently exhaust the ventilation target generated from these cooking appliances (a, b, c) to the outside of the room. Is set. The minimum required exhaust amount is determined based on, for example, the type of hood, the collection rate of the hood, the amount of heat generated by the cooking appliance (a, b, c), and the like. In the present embodiment, the air volume setting section (42) includes a hood constant A determined according to the size and shape of the hood (11), the distance from the cooking device to the hood (11), and the hood (11). The minimum required exhaust amount Q _A0 is set based on the calorific value of the corresponding cooking appliance (a, b, c).

  The air volume changing unit (43) determines and changes the exhaust amount of the exhaust fan (20). Specifically, the air volume changing unit (43) calculates the sum of the additional displacement determined by the calculating unit (41) and the minimum required exhaust amount set by the air volume setting unit (42). The sum is the final displacement of the exhaust fan (20).

-Driving action-
Next, the operation of the ventilation control device (10) according to the first embodiment will be described with reference to FIG. FIG. 2A is a configuration diagram schematically showing a kitchen space to which the ventilation control device (10) is applied (the control unit (40) is not shown). Moreover, FIG. 2 (B) is a table | surface which shows the parameter handled by a control part (40), FIG.2 (C) shows the operating state of a cooking appliance (d, e), and exhaust_gas | exhaustion of an exhaust fan (20). It is a table | surface which shows the relationship with the air volume Q. In addition, S1 in FIG.2 (C) shows the presence or absence of operation of the cooking appliance (d) corresponding to a 1st temperature sensor (31), and S2 is the cooking corresponding to a 2nd temperature sensor (32). It indicates whether or not the device (e) is in operation, and ON means an operating state and OFF means a stopped state.

As described above, the minimum required exhaust amount Q _{A0 of the} cooking appliance (a, b, c) not supported by the temperature sensor (31, 32) is set in the air volume setting unit (42).

When the cooking device (d) and the cooking device (e) are in a stopped state, the temperature detected by the first temperature sensor (31) is lower than the first operating temperature, and the temperature detected by the second temperature sensor (32) is the second operating temperature. Below the temperature. As a result, the control unit (40) considers the cooking appliance (d, e) to be in a stopped state, and sets the additional displacement to zero. Therefore, the exhaust air volume Q of the exhaust fan (20) is the minimum required exhaust volume Q _A0 .

When the cooking device (d) is in an operating state and the cooking device (e) is in a stopped state, the temperature detected by the first temperature sensor (31) is equal to or higher than the first operating temperature, while the second temperature sensor (32) The detected temperature is lower than the second operating temperature. As a result, the control unit (40) considers that the cooking appliance (d) is in an operating state, and sets the additional displacement to Q1. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1.

When the cooking appliance (d) is stopped and the cooking appliance (e) is in an operating state, the temperature detected by the first temperature sensor (31) is lower than the first operating temperature, while the second temperature sensor (32) The detected temperature is equal to or higher than the second operating temperature. As a result, the control unit (40) considers the cooking appliance (e) to be in an operating state, and sets the additional exhaust amount to Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q2.

When the cooking device (d) and the cooking device (e) are in an operating state, the temperature detected by the first temperature sensor (31) is equal to or higher than the first operating temperature, and the temperature detected by the second temperature sensor (32) is the second operating temperature. Over temperature. As a result, the control unit (40) regards the cooking appliance (d) and the cooking appliance (e) as operating, and sets the additional displacement to Q1 + Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1 + Q2.

-Effect of Embodiment 1-
In the ventilation control device according to the first embodiment, the following effects are exhibited.

According to the first embodiment, the exhaust air flow rate of the exhaust fan (20) is always equal to or greater than the minimum required exhaust amount Q _A0 , and the exhaust means (based on the detection signals of the first and second temperature sensors (31, 32)) 20) The exhaust air volume is increased or decreased. Specifically, the additional displacements Q1, Q2 calculated by the calculation unit (41) based on the detected temperatures of the first and second temperature sensors (31, 32), and the minimum set by the air volume setting unit (42) The sum of the necessary exhaust amount Q _A0 is set as the exhaust air amount of the exhaust fan (20). Therefore, the minimum necessary exhaust of the cooking appliance (a, b, c) that the temperature sensor (31, 32) does not support is ensured, and the cooking appliance (d, e) that the temperature sensor (31, 32) supports. Ventilation control can be performed in consideration of operating conditions. In addition, it is possible to reduce the air conditioning load of the air conditioner applied to the kitchen space by excessive ventilation or to reduce the power of the exhaust fan (20).

  Moreover, according to the said Embodiment 1, a temperature sensor (31, 32) is each arrange | positioned to cooking appliances (d, e) with large rated calorific value among several cooking appliances (a, b, c, d, e). By doing so, the minimum required exhaust amount determined by the calorific value of the remaining cooking appliances (a, b, c) is reduced. Therefore, the air conditioning load of the air conditioner provided in the kitchen space can be reduced, or the power of the exhaust fan (20) can be reduced more effectively.

<< Embodiment 2 of the Invention >>
Next, a ventilation control device (10) according to Embodiment 2 will be described. The ventilation control device (10) of the present embodiment is applied to a duct different from that of the first embodiment, and the method for determining the exhaust air volume Q by the control unit (40) is different. In the present embodiment, six cooking appliances (a, b, c, d, e, f) are arranged in the kitchen space. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 3, the duct of the present embodiment is branched into two. And this duct is provided with the 1st and 2nd duct (15a, 15b) which the lower end opens to a kitchen space. The upper ends of both ducts (15a, 15b) are connected to a single collective duct (15). The upper end of the collective duct (15) opens to the outdoor space.

  A first hood (11) is provided at the lower end of the first duct (15a). This 1st food | hood (11) is located in the upper part of cooking appliances (a, b, c), and is arrange | positioned so that these cooking appliances (a, b, c) may be straddled. And the 1st food | hood (11) is comprised so that the ventilation target object which generate | occur | produces from these cooking appliances (a, b, c) can be collected. A second hood (12) is provided at the lower end of the second duct (15b). This 2nd food | hood (12) is located in the upper part of cooking appliances (d, e, f), and is arrange | positioned so that these cooking appliances (d, e, f) may be straddled. And the 2nd food | hood (12) is comprised so that the ventilation target object which generate | occur | produces from these cooking appliances (d, e, f) can be collected.

  The exhaust fan (20) is disposed in the air passage inside the collecting duct (15). Therefore, when the exhaust fan (20) is operated, air is introduced into both the first duct (15a) and the second duct (15b), and after these air merges in the collecting duct (15), the outdoor Is discharged.

  The temperature sensors (31, 32) are composed of a first temperature sensor (31) and a second temperature sensor (32) as in the first embodiment. In the present embodiment, the first temperature sensor (31) corresponds to the cooking appliance (e), and the second temperature sensor (32) corresponds to the cooking appliance (f).

In the air volume setting unit (42) of the control unit (40), the minimum required exhaust amount of the cooking appliance (a, b, c, d) not supported by the temperature sensor (31, 32) is set. Specifically, in the present embodiment, the first and second minimum required exhaust amounts are set in the air volume setting unit (42) of the control unit (40). The first minimum required exhaust amount Q _A0 is set based on the hood constant A of the first hood (11) and the calorific value of the cooking appliance (a, b, c) corresponding to the first hood (11). The On the other hand, the second minimum required exhaust amount Q _B0 is the temperature sensor (31) among the hood constant B of the second hood (12) and the cooking equipment (d, e, f) corresponding to the second hood (12). , 32) is set on the basis of the calorific value of the cooking appliance (d) not arranged.

  Further, the calculation unit (41) of the present embodiment calculates the exhaust air volume of the exhaust fan (20) from the necessary suction air volume for each hood (11, 12). Specifically, the calculation unit (41) determines the exhaust air volume of the exhaust fan (20) that can sufficiently exhaust the ventilation target generated from the cooking appliance (a, b, c) corresponding to the first hood (11) to the outside. The exhaust air volume of the exhaust fan (20) that can sufficiently exhaust the ventilation target generated from the cooking device (d, e, f) corresponding to the second hood (12) to the outside is calculated. Then, the air volume changing unit (43) compares both the exhaust air volumes, and changes the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

-Driving action-
Next, the operation of the ventilation control device (10) according to the second embodiment will be specifically described with reference to FIG. In the present embodiment, the suction air volume ratio between the hoods (11, 12) during the operation of the exhaust fan (20) is determined by the hood constant of the first hood (11) and the second hood (12). That is, as shown in FIG. 3, when the hood constant of the first hood (11) is A, the hood constant of the second hood (12) is B, and the exhaust air volume of the exhaust fan (20) is Q, the first hood The suction air volume of (11) is Q × A / (A + B), and the suction air volume of the second hood (12) is Q × B / (A + B). Therefore, conversely, in order to obtain the suction air volume of Q _A0 in the first hood (11), for example, the exhaust air volume Q of the exhaust fan (20) needs to be Q _A0 × (A + B) / A. In order to obtain the suction air volume of Q _B0 in the two hoods (12), the exhaust air volume Q of the exhaust fan (20) needs to be Q _B0 × (A + B) / B.

  When the cooking device (e) and the cooking device (f) are in a stopped state, the temperature detected by the first temperature sensor (31) is less than the first operating temperature, and the temperature detected by the second temperature sensor (32) is the second operating temperature. Below the temperature. As a result, the calculation unit (41) considers the cooking appliance (e, f) to be in a stopped state, and sets the additional displacement to zero.

Next, the calculation unit (41) calculates a necessary suction air volume for each hood (11, 12). Specifically, the calculation unit (41) first calculates the exhaust air volume (Q _A0 × (A + B) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _A0 in the first hood (11). To do. Next, the calculation unit (41) calculates the exhaust air volume (Q _B0 × (A + B) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _B0 in the second hood (12). The air volume changing unit (43) compares the exhaust air volumes of the two, and sets the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

  When the cooking appliance (e) is in an operating state and the cooking appliance (f) is in a stopped state, the temperature detected by the first temperature sensor (31) is equal to or higher than the first operating temperature, while the second temperature sensor (32) The detected temperature is lower than the second operating temperature. As a result, the calculation unit (41) regards the cooking appliance (e) as being in operation, and sets the additional displacement to Q1.

Next, the calculation unit (41) calculates the required suction air volume for each hood (11, 12). Specifically, the calculation unit (41) first calculates the exhaust air volume (Q _A0 × (A + B) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _A0 in the first hood (11). To do. Next, the calculating unit (41) calculates the exhaust air volume ((Q _B0 + Q1) × (A + B) of the exhaust fan (20) obtained by adding the first additional exhaust amount Q1 to the minimum required exhaust amount Q _B0 in the second hood (12). ) / A). The air volume changing unit (43) compares the exhaust air volumes of the two, and sets the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

  When the cooking appliance (e) is in a stopped state and the cooking appliance (f) is in an operating state, the temperature detected by the first temperature sensor (31) is lower than the first operating temperature, while the second temperature sensor (32) The detected temperature is equal to or higher than the second operating temperature. As a result, the calculation unit (41) regards the cooking appliance (f) as being in operation, and sets the additional displacement to Q2.

Next, the calculation unit (41) calculates the required suction air volume for each hood (11, 12). Specifically, the calculation unit (41) first calculates the exhaust air volume (Q _A0 × (A + B) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _A0 in the first hood (11). To do. Next, the calculation unit (41) calculates the exhaust air volume ((Q _B0 + Q2) × (A + B) of the exhaust fan (20) obtained by adding the second additional exhaust amount Q2 to the minimum required exhaust amount Q _B0 in the second hood (12). ) / A). The air volume changing unit (43) compares the exhaust air volumes of the two, and sets the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

  When the cooking device (e) and the cooking device (f) are in an operating state, the temperature detected by the first temperature sensor (31) is equal to or higher than the first operating temperature, and the temperature detected by the second temperature sensor (32) is the second operating temperature. Over temperature. As a result, the calculation unit (41) regards the cooking appliance (e) and the cooking appliance (f) as operating, and sets the additional displacement to Q1 + Q2.

Next, the calculation unit (41) calculates the required suction air volume for each hood (11, 12). Specifically, the calculation unit (41) first calculates the exhaust air volume (Q _A0 × (A + B) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _A0 in the first hood (11). To do. Next, the calculation unit (41) calculates the exhaust air volume ((()) of the second hood (12) by adding the first additional exhaust amount Q1 and the second additional exhaust amount Q2 to the minimum required exhaust amount Q _B0 . Q _B0 + Q1 + Q2) × (A + B) / A) is calculated. The air volume changing unit (43) compares the exhaust air volumes of the two, and sets the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

-Effect of Embodiment 2-
According to the second embodiment, the minimum required exhaust amount Q _A0 and Q _B0 for each hood (11, 12) is set in the air volume setting unit (42), and ventilation is performed with the exhaust air volume that satisfies this minimum required exhaust volume. I have to. On the other hand, the operating status of the cooking appliance (e, f) is detected by the temperature sensor (31, 32), and the additional exhaust amount is added to the necessary suction air volume of the second hood (12). Therefore, the minimum necessary exhaust of the cooking equipment (a, b, c, d) that the temperature sensor (31, 32) does not support, and at the same time, the ventilation control according to the operating status of the cooking equipment (e, f) It can be carried out.

  Further, according to the second embodiment, the exhaust air volume of the exhaust fan (20) for satisfying the required suction air volume for each hood (11, 12) is calculated, and the larger exhaust air volume of these exhaust air volumes is exhausted. The final exhaust air volume of the fan (20) is used. Therefore, the required suction air volume can be satisfied in each hood (11, 12), and the comfort of this kitchen space can be ensured reliably.

<Modification of Embodiment 2>
Next, a modification of the second embodiment will be described with reference to FIG. In this modification, unlike the second embodiment, the first temperature sensor (31) is provided in the cooking appliance (c). Therefore, the first minimum required displacement Q _A0 is determined by the temperature sensor (31) among the hood constant A of the first hood (11) and the cooking appliance (a, b, c) corresponding to the first hood (11). It is set based on the calorific value of the cooking appliance (a, b) that is not provided. In addition, the second minimum required exhaust amount Q _B0 is determined by the temperature sensor (31) among the hood constant B of the second hood (12) and the cooking equipment (d, e, f) corresponding to the second hood (12). It is set based on the calorific value of the cooking equipment (d, e) not provided.

In this modification, the calculation method of the required suction air volume for each hood (11, 12) performed by the calculation unit (41) is different from that of the second embodiment (see FIG. 4C). Specifically, for example, when the cooking appliance (c) and the cooking appliance (f) are regarded as operating based on the detected temperatures of the first and second temperature sensors (31, 32), 41) adds the first additional exhaust amount Q1 to the minimum required exhaust amount Q _A0 as the necessary suction air amount in the first hood (11). Next, the calculation unit (41) adds the second additional exhaust amount Q2 to the minimum required exhaust amount Q _B0 as the necessary suction air amount in the second hood (12). The air volume changing unit (43) compares the exhaust air volumes of the two, and the larger exhaust air volume is set as the exhaust air volume Q of the exhaust fan (20) (see the bottom column in FIG. 4C). ). Therefore, the exhaust fan (20) is operated with an exhaust air volume that satisfies the required suction air volume in both the hoods (11, 12).

  Also in this modified example, as in the second embodiment, the cooking appliances (a, b, d, e) to which the temperature sensor (31, 32) does not correspond are exhausted to the minimum and at the same time the cooking appliances (c, It is possible to perform ventilation control according to the operational status of f). In addition, the necessary suction air volume can be satisfied in each hood (11, 12), and the comfort of this kitchen space can be ensured reliably.

<< Embodiment 3 of the Invention >>
Next, a ventilation control device (10) according to Embodiment 3 will be described. The ventilation control device (10) of the present embodiment is obtained by further adding a set of a duct and a hood to the configuration of the second embodiment, and the method for determining the exhaust air volume Q by the control unit (40) is different. In this embodiment, nine cooking appliances (a, b, c, d, e, f, g, h, i) are arranged in the kitchen space. Below, a different point from embodiment mentioned above is demonstrated.

As shown in FIG. 5, the duct of the present embodiment is branched into three. The leftmost duct in FIG. 5 constitutes the first duct (15a), the central duct constitutes the second duct (15b), and the right duct constitutes the third duct (15c). The upper ends of the ducts (15a, 15b, 15c) are connected to one collective duct (15). The upper end of the collective duct (15) opens to the outdoor space. )
A first hood (11) is provided at the lower end of the first duct (15a). This 1st food | hood (11) respond | corresponds to a cooking appliance (a, b, c). A second hood (12) is provided at the lower end of the second duct (15b). The second hood (12) corresponds to the cooking device (d, e, f). A third hood (13) is provided at the lower end of the third duct (15c). The third hood (13) corresponds to the cooking device (g, h, i).

  The exhaust fan (20) is disposed at a predetermined position inside the collective duct (15). For this reason, when the exhaust fan (20) is operated, air is introduced into the ducts (15a, 15b, 15c), and these air join in the collecting duct (15) and are then discharged to the outside.

  Similar to the first and second embodiments, the temperature sensor (31, 32) includes a first temperature sensor (31) and a second temperature sensor (32). In the present embodiment, the first temperature sensor (31) corresponds to the cooking appliance (h), and the second temperature sensor (32) corresponds to the cooking appliance (i).

In the air volume setting section (42) of the control section (40), the minimum required exhaust volume of cooking appliances (a, b, c, d, e, f, g) not supported by the temperature sensor (31, 32) Is set. Specifically, in the present embodiment, the first to third minimum required exhaust amount is set in the air volume setting unit (42) of the control unit (40). The first minimum required exhaust amount Q _A0 is set based on the hood constant A of the first hood (11) and the calorific value of the cooking appliance (a, b, c) corresponding to the first hood (11). . On the other hand, the second minimum required exhaust amount Q _B0 is based on the hood constant B of the second hood (12) and the calorific value of the cooking appliance (d, e, f) corresponding to the second hood (12). Is set. Further, the third minimum required displacement Q _C0 is the hood constant C of the third hood (13) and the temperature sensor (31, 31) of the cooking appliance (g, h, i) corresponding to the third hood (13). 32) is set based on the calorific value of the cooking equipment (g) that is not supported.

  Further, the calculation unit (41) of the present embodiment includes an exhaust fan (20) that satisfies the required suction air volume of the first hood (11) and an exhaust fan (20) that satisfies the required suction air volume of the second hood (12). The exhaust air volume of 20) and the exhaust air volume of the exhaust fan (20) that satisfies the required suction air volume of the third hood (13) are calculated. The air volume changing unit (43) sets the largest exhaust air volume among the exhaust air volumes as the exhaust air volume Q of the exhaust fan (20).

-Driving action-
Next, the operation of the ventilation control device (10) according to the third embodiment will be specifically described with reference to FIG. In the present embodiment, the suction air volume ratio of each hood (11, 12, 13) during operation of the exhaust fan (20) is determined by the hood constant of these hoods (11, 12, 13). That is, as shown in FIG. 5, the hood constant of the first hood (11) is A, the hood constant of the second hood (12) is B, the hood constant of the third hood is C, and the exhaust air volume of the exhaust fan (20). When Q is Q, the suction air volume of the first hood (11) is Q × A / (A + B + C), the suction air volume of the second hood (12) is Q × B / (A + B + C), and the third hood ( The suction air volume of 15c) is Q × C / (A + B + C). Therefore, conversely, in order to obtain the suction air volume of Q _A0 in the first hood (11), for example, the exhaust air volume Q of the exhaust fan (20) needs to be Q _A0 × (A + B + C) / A. In order to obtain the suction air volume of Q _B0 in the two hoods (12), the exhaust air volume Q of the exhaust fan (20) needs to be Q _B0 × (A + B + C) / B. For example, in the third hood (13) In order to obtain the suction air volume of Q _C0 , the exhaust air volume Q of the exhaust fan (20) needs to be Q _C0 × (A + B + C) / C.

For example, when the cooking device (h) and the cooking device (i) are considered to be operating based on the detected temperatures of the first and second temperature sensors (31, 32), the calculation unit (41) performs additional exhaust. Let the amount be Q1 + Q2. Next, the calculation unit (41) calculates the necessary suction air volume for each hood (11, 12, 13). Specifically, the calculation unit (41) first calculates the exhaust air volume (Q _A0 × (A + B + C) / A) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _A0 in the first hood (11). To do. Next, the calculation unit (41) calculates the exhaust air volume (Q _B0 × (A + B + C) / B) of the exhaust fan (20) for obtaining the minimum required exhaust amount Q _B0 in the second hood (12). Further, the calculation unit (41) calculates the exhaust air volume ((Q _C0 + Q1 + Q2) × (A + B + C) / C) of the exhaust fan (20) obtained by adding Q1 and Q2 to the minimum required exhaust volume Q _C0 . The air volume changing unit (43) compares the exhaust air volumes, and sets the maximum exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

Thus, in the present embodiment, Q1 and Q2 are added to the minimum required exhaust amount Q _C0 of the third hood (13) according to the temperature detected by the temperature sensor (31, 32), and the cooking appliance (h, i) The exhaust air volume Q corresponding to the operating status is determined (see FIG. 5C).

-Effect of Embodiment 3-
According to the third embodiment, the minimum required exhaust amount is set for each hood (11, 12, 13) in the air volume setting unit (42), and ventilation is performed with an exhaust air volume that satisfies this minimum required exhaust amount. . On the other hand, the operating status of the cooking appliance (h, i) is detected by the temperature sensor (31, 32), and an additional exhaust amount is added to the minimum required exhaust amount of the third hood (13). Therefore, the cooking appliances (a, b, c, d, e, f, g) that are not supported by the temperature sensor (31, 32) are exhausted to the minimum and at the same time, the operating status of the cooking appliances (h, i) Ventilation control according to can be performed.

  Further, according to the third embodiment, the exhaust air volume of the exhaust fan (20) that satisfies the required suction air volume is calculated for each hood (11, 12, 13), and the maximum exhaust air volume among these exhaust air volumes is exhausted. The final exhaust air volume of the fan (20) is used. Therefore, in each hood (11, 12, 13), the required suction air volume can be surely satisfied, and the comfort of this kitchen space can be ensured reliably.

<Modification of Embodiment 3>
Next, a modification of the third embodiment will be described with reference to FIG. In this modification, unlike Embodiment 3, the first temperature sensor (31) is provided in the cooking appliance (f). Therefore, the second minimum required displacement Q _B0 is the temperature sensor (31) among the hood constant B of the second hood (12) and the cooking appliance (e, f, g) corresponding to the second hood (12). Is set based on the calorific value of the cooking appliance (e, f) that is not provided. Further, the third minimum required displacement Q _C0 is the temperature sensor (32) among the hood constant C of the third hood (13) and the cooking equipment (g, h, i) corresponding to the second hood (12). The second minimum required exhaust amount Q _B0 is set based on the calorific value of the cooking appliance (g, h) that is not provided.

In this modified example, as shown in FIG. 6 (C), when calculating the exhaust air volume that satisfies the required suction air volume in each hood (11, 12, 13) by the calculating unit (41), the first additional exhaust gas Q1. Is added to the second minimum required exhaust amount Q _B0 , and the second additional exhaust amount Q 2 is added to the third minimum required exhaust amount Q _C0 .

  Also in this modified example, as in the third embodiment, the minimum necessary exhaust of cooking appliances (a, b, c, d, e, g, h) not supported by the temperature sensor (31, 32) is performed at the same time. The ventilation control according to the operating condition of the cooking appliance (f, i) can be performed. Moreover, in each food | hood (11,12,13), required suction | attraction air volume can be satisfy | filled reliably and the comfort of this kitchen space can be ensured reliably.

<< Embodiment 4 of the Invention >>
Next, a ventilation control device (10) according to Embodiment 4 will be described. The ventilation control device (10) of the present embodiment is different from the first embodiment in the wiring method of the temperature sensors (31, 32). Further, along with the difference in the wiring method, the control unit (40) of the present embodiment has a configuration different from that of the first embodiment. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 7, the control unit (40) of the fourth embodiment is provided with one input unit (44a) corresponding to the temperature sensors (31, 32). On the other hand, the first temperature sensor (31) and the second temperature sensor (32) are connected in series to the input section (44a).

  As shown in FIG. 8, the input part (44a) has a total (potential difference) of the detection signal (potential difference V1) of the first temperature sensor (31) and the detection signal (potential difference V2) of the second temperature sensor (32). V) is received. The converter (43) that has received the signal of the potential difference V from the input unit (44a) converts this signal and transmits it as the detected temperature T to the calculating unit (41). Accordingly, the detected temperature T received by the calculation unit (41) is substantially the sum of the detected temperature T1 of the first temperature sensor (31) and the detected temperature T2 of the second temperature sensor (32).

The calculation unit (41) determines the additional exhaust amount as shown in FIG. That is, for example, the detected temperature T received by the calculation unit (41) is Toff + Ton (where Toff = Min (Toff1, Toff2), Toff1 is the temperature when the cooking appliance (d) is not operating, and Toff2 is The temperature when cooking equipment (e) is not in operation, Ton = Min (Ton1, Ton2), Ton1 is the temperature when cooking equipment (d) is operating, and Ton2 is the temperature when cooking equipment (e) is operating If it is less than), the cooking equipment (d, e) is regarded as not operating, and the additional displacement is zero. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 .

When the detected temperature T is equal to or higher than Toff + Ton and less than 2 × Ton, it is considered that one of the cooking appliances (d, e) is operating, and the additional exhaust amount is defined as the first additional exhaust amount Q1. The larger additional exhaust amount of the second additional exhaust amount Q2 is used. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Max (Q1, Q2).

Furthermore, when the detected temperature T is 2 × Ton or more, it is considered that both cooking appliances (d, e) are operating, and the added exhaust amount is set to Q1 + Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1 + Q2.

-Effect of Embodiment 4-
As described above, according to the fourth embodiment, the first temperature sensor (31) and the second temperature sensor (32) are connected in series to the input unit (44a). Then, the total detected temperature T of the detected temperatures of both the temperature sensors (31) is compared with the temperature Ton when the cooking appliance (d, e) is in operation and the temperature Toff when it is not in operation. I try to decide. Therefore, also in this embodiment, the exhaust air volume of the exhaust fan (20) can be changed according to the operating state of the cooking appliance (d, e), and the minimum requirement for the cooking appliance (a, b, c, d) The displacement can be secured.

  Moreover, in this embodiment, compared with the ventilation control apparatus (10) of Embodiment 1, for example (refer FIG. 1), the number of input parts (44a) can be reduced. Therefore, the configuration of the converter (44) and peripheral devices related thereto can be simplified.

  In the fourth embodiment, the first and second temperature sensors (31, 32) are connected in series to the input unit (44a). However, the first and second temperature sensors (31, 32) may be connected in parallel to the input unit (44a). In this case, the average detected temperature T of the detected temperature T1 of the first temperature sensor (31) and the detected temperature T2 of the second temperature sensor is transmitted to the calculating unit (41). Also in this configuration, the exhaust air volume of the exhaust fan (20) can be changed according to the operating status of the cooking appliance (d, e) by the same control as in the fourth embodiment, and the cooking appliance (a, b, The minimum required displacement of c, d) can be secured. Also, three pairs of temperature sensors can be connected in series or in parallel to the input section (44a), and the exhaust air volume of the exhaust fan (20) can be changed based on the total or average value of these temperature sensors.

<< Embodiment 5 of the Invention >>
The ventilation control device (10) according to Embodiment 5 is applied to a kitchen space in which electric cooking appliances (a, b, c, d, e) are arranged. In the example shown in FIG. 9, these cooking appliances are composed of four electromagnetic cooking appliances (a, b, c, d) and one electric oven (e).

  The ventilation control device (10) includes a duct (15) and an exhaust fan (20) similar to those in the first embodiment, and a control unit (40) similar to that in the first embodiment. Further, unlike the temperature sensors of the first to fourth embodiments, the detection means of the ventilation control device (10) includes first and second ammeters (51, 52). The 1st ammeter (51) is connected to the power cable of cooking appliance (d), and can detect the energization amount of cooking appliance (d). On the other hand, the 2nd ammeter (52) is connected to the power cable of cooking appliance (e), and can detect the energization amount of cooking appliance (e). In other words, each ammeter (51, 52) constitutes an energization amount detection means for detecting the operation status of each cooking appliance (d, e) by detecting the energization amount of the corresponding cooking appliance (d, e). is doing. The first ammeter (51) is wired to the first input section (44a) of the control section (40), and the second ammeter (52) is wired to the second input section (44b) of the control section (40). Are connected to each other.

The control unit (40) is provided with a current setting unit (45) instead of the temperature setting unit (45) of the first embodiment. This current setting unit (45) sets a reference current value (rated current value) for determining whether or not the cooking appliance (d, e) corresponding to the ammeter (51,52) is operating. It is. Specifically, the current setting unit (45) includes a first operating current value that is a current value during operation of the cooking appliance (d) corresponding to the first ammeter (51), and a second ammeter (52). And a second operating current value that is a current value when the cooking appliance (e) is operating is set. The control unit (40) includes an air volume setting unit (42), an air volume changing unit (43), and a conversion unit (44) as in the first embodiment. The minimum required exhaust amount Q _{A0 of the} cooking appliance (a, b, c) not supported by the ammeter (51, 52) is set in the air volume setting unit (42).

The operation of the ventilation control device (10) of the fifth embodiment is substantially the same as that of the first embodiment. As shown in FIG. 10, when the cooking appliance (d) and the cooking appliance (e) are in a stopped state, the detected current value of the first ammeter (51) is less than the first operating current value, and the second ammeter ( 52) The detected current value is less than the second operating current value. As a result, the calculation unit (41) considers the cooking appliance (d, e) to be in a stopped state, and sets the additional displacement to zero. Therefore, the exhaust air volume Q of the exhaust fan (20) is the minimum required exhaust volume Q _A0 .

When the cooking appliance (d) is in the operating state and the cooking appliance (e) is in the stopped state, the detected current value of the first ammeter (51) is greater than or equal to the first operating current value, while the second ammeter (52 ) Is less than the second operating current value. As a result, the calculation unit (41) regards the cooking appliance (d) as being in operation, and sets the additional displacement to Q1. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1.

When the cooking appliance (d) is stopped and the cooking appliance (e) is in the operating state, the detected current value of the first ammeter (51) is less than the first operating current value, while the second ammeter (52 ) Detected current value is equal to or greater than the second operating current value. As a result, the calculation unit (41) regards the cooking appliance (e) as operating and sets the additional displacement to Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q2.

When the cooking appliance (d) and the cooking appliance (e) are in an operating state, the detected current value of the first ammeter (51) is equal to or greater than the first operating current value, and the detected current value of the second ammeter (52) is It becomes more than the second operating current value. As a result, the calculation unit (41) regards the cooking appliance (d) and the cooking appliance (e) as operating, and sets the additional exhaust amount to Q1 + Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1 + Q2.

As described above, in the fifth embodiment, in the electric cooking device (a, b, c, d, e), the exhaust air flow rate of the exhaust fan (20) is always set to the minimum required exhaust amount Q _A0 or more, and the current is further increased. The exhaust air volume of the exhaust means (20) is increased or decreased based on the detected current value of the meter (51, 52). Therefore, the minimum necessary exhaust of cooking appliances (a, b, c) not supported by the ammeter (51, 52) is ensured, and the cooking appliances (d, e) supported by the ammeter (51, 52) are secured. Ventilation control can be performed in consideration of operating conditions. In addition, the number of ammeters (51, 52) can be reduced and the number of accessory parts of the ammeter (51, 52) can be reduced.

  In the fifth embodiment, the ammeter (51, 52) is used as the energization amount detecting means. However, a wattmeter may be used instead. In this case, the operating status of the cooking appliance (d, e) can be determined according to the instantaneous power consumption of the cooking appliance (d, e) to which the power meter corresponds. In addition, you may utilize the ventilation control apparatus (10) of Embodiment 5 for ventilation control of the kitchen space like Embodiment 2 thru | or 4.

Embodiment 6 of the Invention
Next, a ventilation control device (10) of Embodiment 6 will be described with reference to FIG. Unlike the fifth embodiment, the ventilation control device (10) is provided with only one ammeter (51). The ammeter (51) is connected to a main power cable that joins the power cables of both the cooking device (d) and the cooking device (e) in parallel. That is, the ammeter (51) constitutes an energization amount detecting means for detecting the total value of the current values of the cooking appliance (d) and the cooking appliance (e).

  The control unit (40) includes a calculation unit (41), an air volume setting unit (42), an air volume changing unit (43), a conversion unit (44), and a current setting unit (45) in substantially the same manner as in the fifth embodiment. However, the conversion unit (44) is provided with only one input unit (44a). The ammeter (51) is connected to the input unit (44a) via cable wiring.

  When the sum of the current values of both cooking appliances (d, e) detected by the ammeter (51) is input to the input unit (44a) of the control unit (40), the current value I1 of the cooking appliance (d) The total current value I with the current value I2 of the cooking appliance (e) is transmitted to the calculation unit (41).

The calculation unit (41) determines the additional exhaust amount as shown in FIG. That is, for example, the total current value I received by the calculation unit (41) is Ion (where Ion = Min (Ion1, Ion2), Ion1 is the current value when the cooking appliance (d) is operating, and Ion2 is If the cooking appliance (e) is less than the current value during operation, the cooking appliance (d, e) is regarded as not operating, and the additional displacement is set to zero. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 .

In addition, when the total current value I is equal to or greater than Ion and less than 2 × Ion, the calculation unit (41) regards one of the cooking appliances (d, e) as operating, and calculates the additional displacement. The larger additional exhaust amount of the first additional exhaust amount Q1 and the second additional exhaust amount Q2 is set. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Max (Q1, Q2).

Furthermore, when the total current value I is 2 × Ion or more, the calculation unit (41) considers that both the cooking appliances (d, e) are operating, and sets the additional exhaust amount to Q1 + Q2. Therefore, the exhaust air volume Q of the exhaust fan (20) is Q _A0 + Q1 + Q2.

As described above, in the sixth embodiment, the operation status of the plurality of cooking appliances (d, e) is detected by one ammeter (51), and exhaust is performed according to the operation status of these cooking appliances (d, e). The air volume is changed. Therefore, for example, the number of ammeters (51) can be further reduced as compared with the fifth embodiment, and the number of accessory parts of the ammeter (51) can also be reduced. On the other hand, in this ventilation control device (10), the minimum required exhaust amount Q _A0 of the cooking appliance (a, b, c) not supported by the ammeter (51) is satisfied. For this reason, the comfort of kitchen space can be ensured reliably.

  As in the fifth embodiment, a wattmeter may be used instead of the ammeter (51), and the ventilation control device (10) of the sixth embodiment is applied to the kitchen space of the other embodiments. You can also

<Modification of Embodiment 6>
In the sixth embodiment, the exhaust air volume is increased or decreased stepwise according to the increase or decrease of the total current value I detected by the ammeter (51). However, for example, as shown in FIG. 13, the exhaust air volume can be linearly increased / decreased as the total current value I increases / decreases. In this case, for example, when the total current value I is 0, the exhaust air amount of the exhaust fan (20) is set to the minimum required exhaust amount Q _A0, and when the total current value I increases, the minimum required exhaust amount Q _A0 The exhaust air volume should be increased based on the above.

<< Embodiment 7 of the Invention >>
As shown in FIG. 14, the ventilation control device (10) according to the seventh embodiment is an energization amount detection unit that calculates the total energization amount of all cooking appliances (a, b, c) arranged in the kitchen space. The ammeter (51) detects it. Specifically, the ammeter (51) is connected to a main power cable that joins the power cables of the cooking appliances (a, b, c) connected in parallel. Further, as in the sixth embodiment, the control unit (40) includes a calculation unit (41), an air volume setting unit (42), an air volume changing unit (43), a conversion unit (44), and a current setting unit (45). Is provided.

  The total current value I detected by the ammeter (51) is transmitted to the calculation unit (41) via the input unit (44a) as in the sixth embodiment. That is, the calculation unit (41) receives the total current value I of the current value I1 of the cooking appliance (a), the current value I2 of the cooking appliance (b), and the current value I3 of the cooking appliance (c). The Then, the calculation unit (41) determines the exhaust air volume as the total current value I increases or decreases.

  As a method of determining the exhaust air volume by the calculation unit (41), a method of increasing or decreasing the exhaust air volume stepwise as the total current value I increases or decreases as in the sixth embodiment may be used. As in the modification, a method of linearly increasing / decreasing the exhaust air volume as the total current value I increases / decreases may be used.

  In the said Embodiment 7, the operating condition of all the cooking appliances (a, b, c) is detected with one ammeter (51), and the amount of exhaust air flow according to the operating condition of each cooking appliance (a, b, c) Can be changed. Therefore, the ventilation control according to the ventilation load of the kitchen space can be effectively performed while reducing the quantity of the ammeter (51).

<< Embodiment 8 of the Invention >>
The ventilation control device (10) according to Embodiment 8 is applied to a kitchen space in which cooking appliances including gas stoves are arranged. Here, as in the second embodiment, the ventilation control of the eighth embodiment is performed in a kitchen space in which two hoods (11, 12) and a plurality of cooking appliances (a, b, c, d, e, f) are arranged. An example to which the device (10) is applied will be described with reference to FIG.

  The ventilation control device (10) includes a duct (15) and an exhaust fan (20) similar to those in the second embodiment, and a control unit (40) similar to that in the second embodiment. Further, unlike the temperature sensors of the first to fourth embodiments, the detection means of the ventilation control device (10) is composed of first and second gas sensors (61, 62). The first gas sensor (61) is installed in the cooking appliance (e) and continuously detects the amount of gas used by the cooking appliance (e). On the other hand, the second gas sensor (62) is installed in the cooking appliance (f) and continuously detects the amount of gas used by the cooking appliance (f). In other words, each gas sensor (61, 62) constitutes a gas detection means for detecting the operating status of each cooking appliance (e, f) by detecting the gas consumption of the corresponding cooking appliance (d, e). ing. The first gas sensor (61) is connected to the first input unit (44a) of the control unit (40), and the second gas sensor (62) is connected to the second input unit (44b) of the control unit (40) via cable wiring. Each is connected.

  The control unit (40) is provided with a gas amount setting unit (45) instead of the temperature setting unit (45) of the second embodiment. The gas amount setting unit (45) sets a reference gas usage amount for determining whether or not the cooking appliance (e, f) corresponding to the gas sensor (61, 62) is operating. Specifically, the gas amount setting unit (45) includes a first working gas usage amount that is a gas usage amount during operation of the cooking appliance (e) corresponding to the first gas sensor (61), and a second gas sensor (62 ) Is set to a second working gas usage amount that is a gas usage amount during operation of the cooking appliance (f).

The control unit (40) includes a calculation unit (41), an air volume setting unit (42), an air volume changing unit (43), and a conversion unit (44) as in the second embodiment. For the cooking device (a, b, c, d) not supported by the gas sensor (61, 62), the cooking device (a, b, The first minimum required exhaust amount Q _{A0 of} c) and the second minimum required exhaust amount Q _B0 of the cooking appliance (d) corresponding to the second hood (12) are set.

Since the operation of the ventilation control device (10) of the eighth embodiment is substantially the same as that of the second embodiment, detailed description thereof is omitted. As shown in FIG. 15C, the calculation unit (41) further adds the additional exhaust amount to the exhaust air amount while ensuring the minimum required exhaust amount Q _A0 and the second minimum required exhaust amount Q _B0 . That is, the calculation unit (41) adds the first additional air volume Q1 to the exhaust air volume when the gas usage volume of the cooking appliance (e) is equal to or higher than the first working gas usage volume, and the cooking appliance (f) When the gas usage is equal to or greater than the second working gas usage, the second additional air flow Q2 is added to the exhaust air flow. The air volume changing unit (43) compares the exhaust air volumes of the two, and sets the larger exhaust air volume as the exhaust air volume Q of the exhaust fan (20).

  In the said Embodiment 8, a gas meter (61, 62) is used as a detection means which detects the operating condition of a cooking appliance (e, f). And while ensuring the necessary minimum exhaust of the cooking equipment (a, b, c, d) that the gas meter (61, 62) does not support, the corresponding cooking equipment (e, f) of the gas meter (61, 62) Ventilation control that takes into account operating conditions is made possible. Therefore, in a kitchen space where gas cooking devices such as a gas stove and a gas range are arranged, the number of gas meters (61, 62) can be reduced while maintaining the comfort of the kitchen space. In addition, you may apply the ventilation control of Embodiment 8 to the kitchen space of other embodiment.

<< Other Embodiments >>
In the first to fourth embodiments, the temperature sensors (31, 32) are used as the detection means. As the temperature sensor (31, 32), for example, a temperature sensor that is already installed in a turn-off safety device or an overheat prevention device provided in a cooking appliance such as a gas stove can be used. In addition, as the temperature sensor (31, 32), for example, a temperature sensor that is already installed in an electromagnetic cooking appliance that is operated based on temperature information can be used.

  In the above embodiment, the temperature sensor (31, 32), ammeter or wattmeter (51, 52), gas meter (61, 62), or the like is used as the detection means. However, the detection means is not limited to this, and any detection means may be used as long as it can detect the operation status of the cooking appliance directly or indirectly.

  Furthermore, the number of detection means described above is not limited to two, and may be any quantity as long as the quantity is smaller than the number of cooking appliances arranged in the kitchen space.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

  As described above, the present invention is useful for a ventilation control device for a kitchen space provided with a plurality of cooking appliances.

1 is an overall configuration diagram of a ventilation control device according to Embodiment 1. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 1. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 2. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on the modification of Embodiment 2. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 3. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on the modification of Embodiment 3. It is a whole block diagram of the ventilation control apparatus which concerns on Embodiment 4. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 4. FIG. It is a whole block diagram of the ventilation control apparatus which concerns on Embodiment 5. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 5. FIG. It is a whole block diagram of the ventilation control apparatus which concerns on Embodiment 6. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 6. FIG. It is a graph explaining the ventilation control example of the ventilation control apparatus which concerns on the modification of Embodiment 6. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 7. FIG. It is a schematic block diagram at the time of ventilation operation | movement of the ventilation control apparatus which concerns on Embodiment 8. FIG.

Explanation of symbols

(10) Ventilation control device
(20) Exhaust fan (exhaust means)
(31) First temperature sensor (detection means)
(32) Second temperature sensor (detection means)
(40) Control unit
(41) Calculation unit
(42) Air volume setting section
(43) Air volume change section
(44) Conversion unit
(44a) Input section
(45) Temperature setting section
(51) First ammeter (energization amount detection means (detection means))
(52) Second ammeter (energization amount detection means (detection means))
(61) First gas meter (gas detection means (detection means))
(62) Second gas meter (gas detection means (detection means))

Claims (9)

Exhaust means (20) for exhausting the air in the kitchen space where a plurality of cooking appliances (a, b, c, d, e) are arranged, and a plurality of cooking appliances (a, b, c, d, e) Are installed in some cooking appliances (d, e), and the detection means (31, 32) for detecting the operating status of the cooking appliances (d, e) and the exhaust air volume of the exhaust means (20) are changed. And a control unit (40)
The control unit (40) includes an air volume setting unit (42) for arbitrarily setting the minimum required exhaust amount of the cooking device (a, b, c) that is not detected by the detection means (31, 32), and during operation. Ventilation provided with an air volume changing unit (43) that always sets the minimum required exhaust volume as a lower limit value and increases or decreases the exhaust air volume of the exhaust means (20) above the lower limit value based on the detection signal of the detection means (31, 32). Control device. The ventilation control device according to claim 1,
The detection means includes a temperature sensor (31, 32) that detects the temperature in the vicinity of the cooking appliance (d, e),
The air volume changing unit (43) has a minimum required exhaust volume as a lower limit value, and a ventilation control device that increases or decreases the exhaust air volume of the exhaust means (20) at or above the lower limit value based on the temperature detected by the temperature sensor (31, 32). . The ventilation control device according to claim 2,
The control unit (40) includes a calculation unit (41) that calculates an additional displacement based on the temperature detected by the temperature sensor (31, 32).
The air volume change unit (43) is a ventilation control device that uses the sum of the minimum required exhaust air volume and the additional exhaust air volume as the exhaust air volume of the exhaust means (20). The ventilation control device according to claim 3,
The control unit (40) includes a temperature setting unit (45) in which an operating temperature for setting the cooking appliance (d, e) as an operating state is set,
When the temperature detected by the temperature sensor (31, 32) is lower than the operating temperature, the calculating unit (41) sets the additional displacement to zero, while the temperature detected by the temperature sensor (31, 32) is the operating temperature. A ventilation control device that sets the additional displacement to a predetermined displacement larger than zero in the above case. The ventilation control device according to claim 3,
The temperature sensor is composed of a plurality of temperature sensors (31, 32) corresponding to a plurality of cooking appliances (d, e),
A plurality of temperature sensors (31, 32) have an input unit (44a) connected in series or in parallel, and detection signals from the plurality of temperature sensors (31, 32) are converted into a calculation unit (41). Ventilation control device with converter (44) for transmission. The ventilation control device according to any one of claims 2 to 5,
The temperature sensor (31, 32) is a ventilation control device provided in a cooking appliance (d, e) having a large rated calorific value among a plurality of cooking appliances (a, b, c, d, e). The ventilation control device according to claim 1,
The detection means is composed of energization amount detection means (51, 52) for detecting the energization amount of the cooking appliance (d, e),
The air volume changing unit (43) sets the minimum required exhaust air volume as a lower limit value, and increases or decreases the exhaust air volume of the exhaust air means (20) above the lower limit value based on the detected energization volume of the energization volume detecting means (51, 52). Ventilation control device. The ventilation control device according to claim 7,
The energization amount detecting means (51) is configured to detect a total value of energization amounts of the plurality of cooking appliances (d, e),
The air flow rate change unit (43) uses the minimum required exhaust amount as a lower limit value, and exhausts based on the total value of the energization amounts of the plurality of cooking appliances (d, e) detected by the energization amount detection means (51). A ventilation control device that increases or decreases the exhaust air volume of (20) above the lower limit. The ventilation control device according to claim 1,
The detection means is composed of gas detection means (61, 62) for detecting the amount of gas used in the cooking appliance (e, f),
The air volume changing unit (43) sets the minimum required exhaust gas volume as a lower limit value, and increases or decreases the exhaust air volume of the exhaust means (20) above the lower limit value based on the detected gas usage of the gas detection means (61, 62). Ventilation control device.

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