JP2005180875A - Kitchen air supply and exhaust system, and kitchen air supply and exhaust method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save power without independently controlling the air quantity to be taken into a duct through each air suction port at each suction port. <P>SOLUTION: This kitchen air supply and exhaust system comprises an air supplying facility 11 including an air inlet 111 for taking in the outside air, an air duct 112 for guiding the outside air taken through the air inlet to a kitchen, air intake ports 1131 and 1132 for taking the air guided by the duct into the kitchen, and an air supply fan device 114 provided in the course of the air duct and capable of variably controlling the air supply quantity; an exhaust facility 12 including air suction ports provided above a plurality of cookers within the kitchen, respectively, an exhaust duct 123 for guiding the air sucked through the intake ports 1211, 1212, and 1213 to the outside, an exhaust fan device 124 provided on the course of the exhaust duct and capable of variably controlling the exhaust quantity, and temperature sensors 1251, 1252 and 1253 provided on the air intake ports or on the exhaust duct side in the vicinity of the intake ports, respectively; and a controller 16 for acquiring temperature information from each temperature sensor and controlling the exhaust quantity of the exhaust fan device according to the maximum value of each air intake port temperature. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a kitchen air supply / exhaust system and a kitchen air supply / exhaust system for controlling air exhaust from an air intake port provided on each of a plurality of heat cookers in the kitchen based on a temperature sensor provided to each air intake port. The present invention relates to a kitchen air supply / exhaust system and a kitchen air supply / exhaust method that can save power without individually controlling the amount of air taken into the duct from each air intake.

  Conventionally, as a technique for supplying and exhausting air in a kitchen, as shown in Patent Document 1 and the like, each gas cooking device detected by the gas flow meter is attached to each gas supply pipe to each gas cooker. Some devices control the amount of air suction (exhaust amount) from a suction port provided above each gas cooker based on the gas consumption of the cooker. Specifically, each suction port is controlled independently by the opening of a damper provided for each suction port provided for each suction port. In other words, the fan provided in the intake duct (exhaust duct) is operated at a predetermined number of revolutions (controllable by the total consumption of gas), and the opening degree of the damper increases as the gas consumption in each gas cooker increases. The intake (exhaust) amount in the duct is increased.

JP-A-5-322242

  However, in the case of the control based on the gas consumption as described above, the damper is opened to increase the supply / exhaust amount while using the gas (cooking), and the gas consumption is 0 and the gas is used. When it is not cooking, it is not cooking, so the damper is closed or the opening degree is reduced to reduce the supply and exhaust volume. The control is performed based on the assumption that the consumption is large = the supply / exhaust amount needs to be increased, so it seems that efficient supply / exhaust control can be performed at first glance. However, when an experiment was conducted by introducing an actual system, the operation was not suitable for the actual use situation, and a very favorable result was not obtained.

  That is, considering the recent energy savings, if the fan speed is increased when it is not necessary (more than necessary), not only wasteful power consumption is generated for rotating the fan, but also outside air is introduced into the room. As the room temperature changes, the power consumption of the air conditioner (air conditioner) increases, which is not preferable.

  On the other hand, if the rotational speed of the fan is not sufficient (the damper opening is small), for example, hot air, steam and oily smoke generated during cooking cannot be exhausted to the outside of the room, resulting in an increase in indoor temperature or steam. (Water droplets) and oil are not preferable because they adhere to the wall surface of the room and others.

  And the consumption of gas and the generation amount of the above-mentioned steam, oily smoke, etc. do not necessarily correspond to each other. That is, for example, when gas is ignited and cooking is started, even if the amount of gas consumed is large, steam, oily smoke, etc. are not emitted immediately, but are emitted after the temperature of the cooking utensils etc. rises to some extent. However, since a certain time lag occurs and the time lag changes according to the situation at that time, it cannot be defined uniformly. Further, even when steam is generated as a result of gas combustion, even if the gas is turned off and the consumption becomes zero, steam or the like continues to be generated for a predetermined period thereafter. Therefore, even if the control is performed based on the gas consumption, it is impossible to save energy by exhausting necessary and sufficient exhaust gas. Furthermore, in the technique of controlling supply / exhaust by opening / closing the damper, oil adheres to the damper, which causes a problem that the opening / closing mechanism may not operate.

  The present invention has been proposed to solve the above inconveniences, and it is possible to reduce the power required for supplying and exhausting the kitchen without installing a damper at each suction port, and to perform necessary and sufficient supply and exhaust. It is an object of the present invention to provide a kitchen air supply / exhaust system and a kitchen air supply / exhaust method.

  In order to achieve the above object, a kitchen air supply / exhaust system according to the present invention includes an air supply port for taking in outside air, an air supply duct for guiding outside air taken in from the air supply port to the kitchen, and the air supply duct. An air supply facility having an air intake port for taking the introduced air into the kitchen, and an air supply fan device provided in a path of the air supply duct and capable of variably controlling the air supply amount, and a plurality of heats in the kitchen An air suction port provided on each cooker, an exhaust duct for guiding the air sucked from each air suction port to the outside air, and an exhaust fan device provided on the path of the exhaust duct and capable of variably controlling the exhaust amount A temperature sensor provided on each of the air suction ports or on the exhaust duct side in the vicinity of the suction ports, and temperature information is acquired from each of the temperature sensors, and the exhaust fan device Wherein the amount of exhaust, wherein the provided with a controller for controlling in accordance with the maximum value of each of the air inlet temperature.

  In the kitchen supply / exhaust system of the present invention, the controller receives an activation signal based on turning on the power (main power) of the system, and the maximum value of each air inlet temperature is a first predetermined temperature (for example, 30 ° C.). When it is below or below, the initial value of the exhaust amount of the exhaust fan device is set to a first predetermined amount (for example, the converted value to the drive frequency of the exhaust fan device is 30 Hz), and the air intake port temperature When the maximum value is greater than the first predetermined temperature or greater than or equal to the predetermined value and less than or less than the second predetermined temperature (for example, 38 ° C.), the second predetermined amount (for example, the converted value is 40 Hz) The exhaust amount of the exhaust fan device is proportionally controlled with a lower limit and a third predetermined amount (for example, the converted value is 49 Hz) as an upper limit, and the maximum value of each air inlet temperature is larger than the second predetermined temperature. The Itoki or the predetermined temperature or more time, the fourth predetermined quantity (e.g., the conversion value is 50 Hz) can be configured to control the exhaust amount of the exhaust fan apparatus such that.

  In the kitchen supply / exhaust system of the present invention, the controller receives an activation signal based on turning on the power (main power) of the system, and the difference between the maximum value of each air inlet temperature and the room temperature is less than a predetermined width or If less than the initial value, the initial value of the exhaust amount of the exhaust fan device is set to a first predetermined amount (for example, the converted value to the drive frequency of the exhaust fan device is 30 Hz), and the maximum value of each air inlet temperature Is greater than a predetermined set temperature (for example, room temperature + Δ (° C.)) or greater than or equal to the predetermined value and less than or less than a second predetermined temperature (for example, 38 ° C.), the second predetermined amount (for example, the conversion) The exhaust air amount of the exhaust fan device is proportionally controlled with a value of 40 Hz as a lower limit and a third predetermined amount (for example, the converted value is 49 Hz) as an upper limit, and the maximum value of each air inlet temperature is a second value. of When the temperature is higher than a constant temperature (for example, 38 ° C.) or higher than the predetermined temperature, the exhaust amount of the exhaust fan device is controlled so as to be a fourth predetermined amount (for example, the converted value is 50 Hz). It can also be configured.

  The kitchen supply / exhaust system according to the present invention may include a room temperature sensor for detecting a room temperature of the kitchen. In this case, the controller further obtains room temperature information from the room temperature sensor, and each air inlet temperature When the state in which the value obtained by subtracting the room temperature from the maximum value is less than or less than a predetermined value (ΔT = 5 ° C.) continues for a predetermined time (30 seconds), the exhaust amount of the exhaust fan device is 1 can be set to a predetermined amount.

  The kitchen supply / exhaust system of the present invention includes a CO2 sensor that detects the CO2 concentration of the kitchen, and the controller acquires CO2 concentration information from the CO2 sensor, and when the CO2 concentration is equal to or greater than a predetermined value, The exhaust amount of the exhaust fan device can be set to the fourth predetermined amount (50 Hz).

In the kitchen supply / exhaust system according to the present invention, each of the heat cookers is a gas cooker, and can include a gas consumption detector that detects a gas consumption by each of the heat cookers. The detection signal is acquired from the gas consumption detection means, the total gas consumption is calculated based on the temperature information acquired from the temperature sensors. When the exhaust amount is larger than the calculated exhaust amount, the exhaust amount of the air supply fan device can be controlled based on the required exhaust amount.
In the kitchen air supply / exhaust system of the present invention, the controller can control the air supply amount of the air supply fan device based on the exhaust amount of the exhaust fan device.

  In the kitchen air supply / exhaust system of the present invention, the air supply fan device and the exhaust fan device can include an inverter and a fan motor. In this case, the exhaust amount can be set as the drive frequency of the inverter.

  In the kitchen air supply / exhaust method of the present invention, the temperature of the air suction port provided on each of the plurality of heat cookers in the kitchen is detected, and the exhaust amount of the exhaust fan device is determined as the temperature of each air suction port. Control is performed according to the maximum value.

In the kitchen air supply / exhaust method according to the present invention, when the maximum value of each air inlet temperature is equal to or lower than the first predetermined temperature (30 ° C.), the initial value of the exhaust amount is set to the first predetermined amount (30 Hz). Set,
When the maximum value of each air inlet temperature is greater than the first predetermined temperature (30 ° C.) or above the predetermined value and below or below the second predetermined temperature (38 ° C.), the second predetermined amount (40 Hz) ) As a lower limit and a third predetermined amount (49 Hz) as an upper limit, and the exhaust amount is proportionally controlled. When the maximum value of each air inlet temperature is higher than a second predetermined temperature (38 ° C.) or second When the temperature is equal to or higher than the predetermined temperature (38 ° C.), the exhaust amount can be controlled to be the fourth predetermined amount (50 Hz).

  In the kitchen air supply / exhaust method of the present invention, when the difference between the maximum value of each air inlet temperature and the room temperature is equal to or less than a predetermined width (5 ° C.), the initial value of the exhaust amount of the exhaust fan device is set. The first predetermined amount (30 Hz) is set, and the maximum value of each air inlet temperature is greater than a predetermined set temperature (room temperature + 5 ° C.) or above the predetermined value, and below the second predetermined temperature (38 ° C.) or If it is less, the second predetermined amount (40 Hz) is the lower limit and the third predetermined amount (49 Hz) is the upper limit, and the exhaust amount is proportionally controlled. The maximum value of each air inlet temperature is the second predetermined amount. When the temperature is higher than the temperature (38 ° C.) or higher than the predetermined temperature (38 ° C.), the exhaust amount can be controlled to be the fourth predetermined amount (50 Hz).

In the kitchen air supply / exhaust method according to the present invention, a state in which a value obtained by subtracting the room temperature in the kitchen from the maximum value of each air inlet port temperature is equal to or less than a predetermined value (ΔT = 5 ° C.) for a predetermined time (30 seconds). ) When continuing, the exhaust amount can be set to the first predetermined amount (30 Hz).
The kitchen air supply / exhaust method of the present invention can set the exhaust amount to the fourth predetermined amount (50 Hz) when the CO2 concentration in the kitchen is not less than a predetermined value.

In the kitchen air supply / exhaust method of the present invention, when each of the heat cookers is a gas cooker, the total gas consumption of each of the heat cookers is obtained from the temperature sensors as to the required exhaust amount based on the Building Standards Act. When the displacement is larger than the displacement determined based on the temperature information, the displacement can be controlled based on the required displacement.
In the kitchen air supply / exhaust method of the present invention, the air supply amount can be controlled based on the exhaust amount. Further, the displacement can be set as the drive frequency of the inverter.

  According to the present invention, it is possible to reduce the power required for supplying and exhausting the kitchen without installing a damper at each suction port, and to keep the temperature in the kitchen constant.

  FIG. 1 is an explanatory view showing an embodiment of a kitchen air supply / exhaust system according to the present invention. In FIG. 1, the kitchen air supply / exhaust system 1 includes an air supply facility 11, an exhaust facility 12, a room temperature sensor 13, a CO 2 sensor 14, a gas consumption detector 15, a controller 16, and an operation panel 17. Yes.

  The air supply facility 11 includes an air supply port 111 for taking in outside air, an air supply duct 112 for guiding outside air taken in from the air supply port 111 into the kitchen, and air introduced into the air supply duct 112 into the kitchen. Air intake ports 1131 and 1132 for intake, and an air supply fan device 114 (consisting of an air supply fan 1141 and an inverter 1142) provided in the path of the air supply duct 112 and capable of variably controlling the air supply amount IN are provided. .

  The exhaust facility 12 includes air suction ports 1211, 1212, and 1213 provided on the three gas cookers 21, 22, and 23 in the kitchen, respectively, and an exhaust duct that guides air sucked from these air suction ports to the outside air 123 and on the path of the exhaust duct 123. The disposal facility 12 is provided on the exhaust duct device 124 (consisting of an exhaust fan 1241 and an inverter 1242) capable of variably controlling the exhaust amount OUT, and on the exhaust duct 123 side in the vicinity of the air suction ports 1211, 1212, and 1213. Temperature sensors 1251, 1252, and 1253.

  The room temperature sensor 13 detects the room temperature TMPR of the kitchen. The CO2 sensor 14 detects the CO2 concentration CC in the kitchen. Furthermore, the gas consumption detector 15 can detect the total gas consumption GQ by each gas cooker 21, 22, 23.

  The controller 16 obtains room temperature information (TMPR) from the room temperature sensor 13, CO2 concentration information (CC) from the CO2 sensor 14, and total gas consumption information (GQ) from the gas consumption detector 15, and the temperature sensor 1241. , 1242, 1243 can be acquired air inlet temperature information (TMP1, TMP2, TMP3). And this controller 16 controls the air supply amount of the air supply fan apparatus 114 based on these acquired various information.

  FIG. 2 is a functional block diagram showing the operation of the controller 16. The controller 16 includes an air supply inverter frequency determining unit 161, an exhaust inverter frequency determining unit 162, an inverter frequency set value sending unit 163, and a time measuring unit 164.

  As will be described later, the exhaust inverter frequency determining means 162 inputs air inlet temperature information (TMP1, TMP2, TMP3), room temperature information (TMPR), and CO2 concentration information (CC), and these information and time measuring means 164 are input. The operating frequency of the inverter 1242 can be determined based on the time information from. In the present embodiment, the supply inverter frequency determining means 161 can determine the operating frequency of the inverter 1142 with reference to the operating frequency determined by the exhaust inverter frequency determining means 162. Inverter frequency set value sending means 163 can send operating frequency information to inverter 1142 and inverter 1242. The operation panel 17 is provided with a switch for the user to turn on / off the kitchen air supply / exhaust system 1.

  A first control example in the kitchen air supply / exhaust system 1 shown in FIG. 1 will be described with reference to the flowchart of FIG. First, when the user turns on the kitchen air supply / exhaust system 1 using the operation panel 17 at work, the controller 13 activates the air supply fan device 124 and the exhaust fan device 124. In this control example, when the power is turned on, the controller 13 operates the inverter 1242 of the air supply fan device 124 at a first predetermined operating frequency (30 Hz in this control example) (S101). Next, when any of the cookers 21, 22, and 23 is operating, it is determined whether or not the CO2 concentration CC exceeds a predetermined concentration (1000 ppm in this control example) (S102). When it exceeds 1000 ppm (“YES” in S102), the operating frequency of the inverter 1242 is set to the highest value (fourth predetermined operating frequency: 50 Hz in this control example) (S103), and the CO2 concentration CC is 1000 ppm or less. The operation frequency is maintained at 50 Hz until the CO2 concentration CC becomes 1000 ppm or less, and the process returns to S101 to operate the inverter 1242 at 30 Hz.

  When the CO2 concentration CC does not exceed 1000 ppm in S102 ("NO" in S102), the highest temperature among the air inlet temperatures TMP1, TMP2, and TMP3 (the highest temperature Tm indicated by the temperature sensors 1241, 1242, and 1243) is It is determined whether or not the temperature is lower than a first predetermined temperature (that is, 30 ° C. here) (S104). When the temperature is lower than 30 ° C. (“YES” in S104), the inverter 1242 is set to a second predetermined operating frequency (this control example). In this case, the process is returned to S101, and the inverter 1242 is operated at 30 Hz.

In S104, when the maximum temperature (Tm) of the air inlet temperatures TMP1, TMP2, and TMP3 is 30 ° C. or higher (“NO” in S104), the maximum temperature Tm is the second predetermined temperature (38 in this control example). ° C) or less (S106), and if it is 38 ° C or less (“YES” in S106), the operating frequency N of the inverter 1242 is
(T2-T1) N = (N2-N1) Tm + (T2 * N1-T1 * N2)
Tm: Maximum temperature T1: of the three temperature sensors T1, T2, T3 First predetermined temperature (30 ° C.)
T2: Second predetermined temperature (38 ° C.)
N1: Second predetermined operating frequency (40 Hz)
N2: Third predetermined operating frequency (49 Hz)
And the process returns to S103 described above (S107).

  When it is determined in S106 that the maximum temperature Tm is higher than the second predetermined temperature (38 ° C. in this control example) (“NO” in S106), it is determined whether or not the maximum temperature Tm is the third predetermined temperature 45 ° C. or less. Judgment is made (S108), and when it is 45 ° C. or lower (ie, 38 <Tm ≦ 45: “YES” in S108), the inverter 1242 is set to the third predetermined operating frequency (49 Hz in this control example), and the processing is described above. The process returns to S103 (S109).

  When it is determined in S108 that Tm is higher than the third predetermined temperature 45 ° C. (“NO” in S108), the inverter 1242 is set to the fourth predetermined operating frequency (50 Hz in this control example) (S110). Is less than or equal to the third predetermined temperature (28.5 ° C. in the present control example) (S111), and when the third predetermined temperature is not lower than 28.5 ° C., the inverter 1242 is set to the fourth predetermined temperature. The operating frequency is maintained at 50 (“NO” in S111), and when the third predetermined temperature is 28.5 ° C. or lower, the process is returned to S103 described above (“YES” in S111).

  A second control example in the kitchen air supply / exhaust system 1 shown in FIG. 1 will be described with reference to the flowchart of FIG. First, when the user turns on the kitchen air supply / exhaust system 1 using the operation panel 17 at work, the controller 13 activates the air supply fan device 124 and the exhaust fan device 124. In this control example, when the power is turned on, the controller 13 operates the inverter 1242 of the air supply fan device 124 at the first predetermined operating frequency (30 Hz in this control example) (S201).

  Next, it is determined whether or not ΔT between the air inlet temperatures TMP1, TMP2, and TMP3 and the room temperature TMPR is less than a predetermined value (5 ° C. in this control example) (S202). Is maintained at 30 Hz (“YES” in S202), and when it is 5 ° C. or higher (“NO” in S202), whether or not the CO2 concentration CC exceeds a predetermined concentration (1000 ppm in this control example). When the CO2 concentration CC exceeds 1000 ppm (“YES” in S204), the predetermined operating frequency of the inverter 1242 is set to the highest value (fourth predetermined operating frequency: 50 Hz in this control example). (S205), the operating frequency of 50 Hz is maintained until the CO2 concentration CC becomes 1000 ppm or less, and the CO2 concentration CC becomes 1000 ppm or less. Time, returns the process to S201, (in this control example 30 Hz) the inverter 1242 first predetermined operating frequency to operate at.

When the CO2 concentration CC does not exceed 1000 ppm in S204 (“NO” in S204), the highest temperature (Tm) among the air inlet temperatures TMP1, TMP2, and TMP3 is the second predetermined temperature (38 ° C. in this control example). ) It is determined whether or not (S206), and when it is 38 ° C. or less (“YES” in S206)
(T2-T1) N = (n2-n1) Tm + (T2 * n1-T1 * n2)
Tm: Maximum temperature T1: Temperature stored in a predetermined register among the temperatures T1, T2 and T3 of the three temperature sensors (in this case, room temperature TMPR + 5 ° C.)
T2: Second predetermined temperature (38 ° C.)
N1: Second predetermined operating frequency (40 Hz)
N2: Third predetermined operating frequency (49 Hz)
To determine whether ΔT has continued for 30 seconds or more (S203). If it has continued for 30 seconds or more, the process returns to S201 to operate the inverter 1242 at the first predetermined operating frequency of 30 Hz. If it is determined that ΔT has not continued for 30 seconds or more, the process is passed to S204.

  When it is determined in S206 that the maximum temperature Tm is higher than the second predetermined temperature (38 ° C. in the present control example) (“NO” in S206), it is determined whether or not the maximum temperature Tm is the third predetermined temperature 45 ° C. or less. Judgment is made (S208), and when the temperature is 45 ° C. or lower (ie, 38 <Tm ≦ 45: “YES” in S208), the inverter 1242 is set to the third predetermined operating frequency (49 Hz in this control example), and the processing is described above. The process returns to S203 (S209).

  When it is determined in S208 that the maximum temperature Tm is higher than the third predetermined temperature 45 ° C. (“NO” in S208), the inverter 1242 is set to the fourth predetermined operating frequency (50 Hz in this control example), and the process is performed. Return to S201 (S210).

  A third control example in the kitchen air supply / exhaust system 1 shown in FIG. 1 will be described with reference to the flowcharts of FIGS. 5 and 6, the processing from S201 to S210 is the same as the processing described in FIG. 5 and 6, when determining the operating frequency of the inverter 1242, as described above, the operating frequency of the inverter 1241 at the normal time obtained based on the temperature (air inlet temperature TMP1, TMP2, TMP3, room temperature TMPR) as described above. Compared with the operating frequency Na corresponding to the required displacement based on the Building Standard Law, when Na is larger than the normal operating frequency, the inverter 1242 is operated by the operating frequency Na corresponding to the required displacement based on the Building Standard Law. The operation frequency is controlled.

  That is, in FIG. 5 and FIG. 6, the controller 13 sets the required displacement based on the Building Standard Act when setting the inverter 1242 to the first predetermined operating frequency (30 Hz) in S201 (or maintaining it at 30 Hz). The corresponding operating frequency Na is obtained, and it is determined whether or not Na is greater than 30 Hz (S_A). If it is greater, the operating frequency of the inverter 1242 is set to Na (S_B), and the process is passed to S202.

  When calculating and setting the operating frequency (NHz) of the inverter 1242 in S207, the operating frequency Na corresponding to the required displacement based on the Building Standards Act is obtained, and it is determined whether or not Na is greater than NHz (S_C). If it is larger, the operating frequency of the inverter 1242 is set to Na (S_E), and the process is passed to S203.

  When setting the inverter 1242 to the third predetermined operating frequency (49 Hz) in S209 (or maintaining it at 49 Hz), the operating frequency Na corresponding to the required displacement based on the Building Standards Act is obtained, and Na is higher than 49 Hz. It is determined whether or not the frequency is larger (S_D). If the frequency is larger, the operating frequency of the inverter 1242 is set to Na (S_E), and the process is passed to S203.

  FIG. 7 is a frequency transition diagram of the inverter 1242 showing the operating state of the kitchen supply / exhaust system 1 shown in FIG. In FIG. 7, the power supply of the kitchen supply / exhaust system 1 is turned on at 07:00, and the inverter 1242 is driven at a frequency of 30 Hz. Then, at 07:30, at least one of the gas cookers 21, 22, 23 starts to be used, all the gas cookers 21, 22, 23 stop at 14:30, and the gas cooker 21 again at 16:30. , 22, and 23 start to be used, all gas cookers 21, 22, and 23 stop at 21:30, and the system 1 is turned off at 24:00.

  As mentioned above, efficient and necessary air supply and exhaust can be performed efficiently, so there is no need to turn the fan more than necessary and energy saving effect can be demonstrated. Cool and warm heat will not be released to the outside. Furthermore, even if all gas cookers are not used, such as after 14:30, when cooking is performed until just before, the hot air does not disappear immediately, but steam or oil smoke In this embodiment, since the control is based on the temperature, the frequency of rotating the fan does not immediately drop to the minimum 30, but gradually decreases according to the temperature. Therefore, hot air, steam, etc. can be exhausted outside the room at a necessary and sufficient number of revolutions.

  Furthermore, since the amount of air supply can be suppressed, the amount of air introduced into the room by the air supply can be reduced, so that the drying of the food can be reduced and the air accompanying the air supply hits the person. However, since the amount is reduced, the draft feeling that a person has can be reduced. For the same reason, scattering of the powder can be suppressed. Usually, the displacement is larger than the intake amount, and the degree of the difference increases as the displacement increases. Therefore, by suppressing the air supply / exhaust amount as necessary and sufficient, the difference between the air supply amount and the exhaust amount, that is, the degree of negative pressure in the room is reduced. Occurrence can also be suppressed.

It is explanatory drawing which shows one Embodiment of the kitchen air supply / exhaust system of this invention. It is a functional block diagram which shows operation | movement of a controller. It is a flowchart which shows the 1st control example in the kitchen air supply / exhaust system shown in FIG. It is a flowchart which shows the 2nd control example in the kitchen air supply / exhaust system shown in FIG. It is a flowchart which shows the 3rd control example in the kitchen air supply / exhaust system shown in FIG. It is a flowchart which shows the 4th control example in the kitchen air supply / exhaust system shown in FIG. It is a frequency transition diagram of the inverter which shows the operating state of the kitchen air supply / exhaust system shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Kitchen air supply / exhaust system 11 Air supply equipment 12 Exhaust equipment 13 Room temperature sensor 14 CO2 sensor 15 Gas consumption detector 16 Controller 17 Operation panel 21, 22, 23 Gas cooker 111 Air inlet 112 Air supply duct 114 Air supply fan apparatus 123 Exhaust duct 124 Exhaust fan device 161 Supply inverter frequency determination means 162 Exhaust inverter frequency determination means 163 Inverter frequency set value sending means 1131, 1132 Air intake port 1141 Supply air fans 1142, 1242 Inverter 1211, 1212, 1213 Air intake Port 1241 Exhaust fan 1251, 1252, 1253 Temperature sensor

Claims (16)

An air inlet for taking in outside air;
An air supply duct for guiding outside air taken in from the air supply port to the kitchen;
An air intake port for taking the air guided to the air supply duct into the kitchen;
An air supply fan device provided in a path of the air supply duct and capable of variably controlling an air supply amount;
Air supply equipment,
An air inlet provided on each of the plurality of heat cookers in the kitchen;
An exhaust duct for guiding the air sucked from each air suction port to the outside air;
An exhaust fan device provided on a path of the exhaust duct and capable of variably controlling an exhaust amount;
A temperature sensor provided on each air suction port or on the exhaust duct side in the vicinity of the suction port; and
An exhaust system having, and
A controller that acquires temperature information from each temperature sensor and controls the exhaust amount of the exhaust fan device according to the maximum value of each air inlet temperature,
A kitchen air supply / exhaust system characterized by comprising: When the maximum value of each air inlet temperature is less than a first predetermined temperature, the initial value of the exhaust amount of the exhaust fan device is set to a first predetermined amount,
When the maximum value of each air inlet temperature is equal to or higher than the first predetermined temperature and equal to or lower than the second predetermined temperature, the exhaust amount of the exhaust fan device has a second predetermined amount as a lower limit and a third predetermined amount as an upper limit. Is controlled proportionally,
When the maximum value of each air inlet temperature is greater than a second predetermined temperature, the exhaust amount of the exhaust fan device is controlled to be a fourth predetermined amount that is greater than the third predetermined amount. The kitchen air supply / exhaust system according to claim 1. The controller receives an activation signal from each of the heat cookers,
When the difference between the maximum value of each air inlet temperature and the room temperature is less than the reference temperature difference, the initial value of the exhaust amount of the exhaust fan device is set to a first predetermined amount,
When the maximum value of each air inlet temperature is not less than room temperature + the reference temperature difference and not more than the second predetermined temperature, the exhaust of the exhaust fan device is set with the second predetermined amount as a lower limit and the third predetermined amount as an upper limit. Control the amount proportionally,
When the maximum value of each air inlet temperature is greater than a second predetermined temperature, the exhaust amount of the exhaust fan device is controlled to be a fourth predetermined amount larger than the third predetermined amount;
The kitchen air supply / exhaust system according to claim 1. A room temperature sensor for detecting the room temperature of the kitchen;
The controller further acquires room temperature information from the room temperature sensor, and when the value obtained by subtracting the room temperature from the maximum value of each air inlet temperature is less than a reference value continues for a predetermined time, the exhaust fan 4. The kitchen air supply / exhaust system according to claim 1, wherein an exhaust amount of the apparatus is set to the first predetermined amount. 5. A CO2 sensor for detecting the CO2 concentration in the kitchen;
The controller acquires CO2 concentration information from the CO2 sensor, and sets the exhaust amount of the exhaust fan device to the fourth predetermined amount when the CO2 concentration is a predetermined value or more. Item 5. The kitchen air supply and exhaust system according to any one of Items 1 to 4. Each of the heat cookers is a gas cooker, and includes a gas consumption detector that detects gas consumption by each of the heat cookers,
The controller obtains a detection signal from the gas consumption detection means, calculates a required exhaust amount based on a building standard method with a total gas consumption, and the required exhaust amount is acquired from each temperature sensor. 6. The kitchen air supply / exhaust according to claim 1, wherein the exhaust air amount of the air supply fan device is controlled based on the required exhaust air amount when the exhaust air amount is larger than the exhaust air amount obtained based on the information. system.   The kitchen air supply / exhaust system according to any one of claims 1 to 6, wherein the controller controls an air supply amount of the air supply fan device based on the exhaust amount of the exhaust fan device.   The kitchen air supply / exhaust system according to any one of claims 1 to 7, wherein the air supply fan device and the exhaust fan device include an inverter and a fan motor, and the exhaust amount is a drive frequency of the inverter. Detecting the temperature of the air inlet provided on each of the plurality of heat cookers in the kitchen,
A kitchen air supply / exhaust method, wherein the exhaust amount of the exhaust fan device is controlled in accordance with the maximum value of each air inlet temperature. When the maximum value of each air inlet temperature is less than the first predetermined temperature, the initial value of the exhaust amount is set to the first predetermined amount,
When the maximum value of each air inlet temperature is not less than the first predetermined temperature and not more than the second predetermined temperature, the exhaust amount is proportionally controlled with the second predetermined amount as the lower limit and the third predetermined amount as the upper limit. And
When the maximum value of each air inlet temperature is equal to or higher than a second predetermined temperature that is higher than a second predetermined temperature, the exhaust amount is controlled to be a fourth predetermined amount that is larger than the third predetermined amount. ,
The kitchen air supply / exhaust method according to claim 9. When the difference between the maximum value of each air inlet temperature and the room temperature is less than the reference value width, the initial value of the exhaust amount of the exhaust fan device is set to a first predetermined amount,
When the maximum value of each air inlet temperature is not less than the predetermined room temperature + the reference value width and not more than the second predetermined temperature, the second predetermined amount is the lower limit and the third predetermined amount is the upper limit, and the displacement is proportional Control to
When the maximum value of each air inlet temperature is equal to or higher than a second predetermined temperature, the exhaust amount is controlled to be a fourth predetermined amount that is larger than the third predetermined amount.
The kitchen air supply / exhaust system according to claim 9.   When the state where the value obtained by subtracting the room temperature in the kitchen from the maximum value of each air inlet temperature is less than a predetermined reference value continues for a predetermined time, the exhaust amount is set to the first predetermined amount. The kitchen air supply / exhaust method according to any one of claims 9 to 11, wherein   The kitchen air supply / exhaust method according to any one of claims 10 to 12, wherein when the CO2 concentration in the kitchen is equal to or greater than a predetermined value, the exhaust amount is set to the fourth predetermined amount.   Each said heat cooker is a gas cooker, and the total gas consumption of each said heat cooker is more than the exhaust_gas | exhaustion amount calculated | required based on the said temperature information that the required exhaust amount based on a building standard method acquired from each said temperature sensor The kitchen air supply / exhaust method according to any one of claims 10 to 13, wherein when it is large, the exhaust amount is controlled based on the necessary exhaust amount.   The kitchen air supply / exhaust method according to any one of claims 10 to 14, wherein an air supply amount is controlled based on the exhaust amount.   The kitchen air supply / exhaust method according to any one of claims 10 to 15, wherein the displacement is an inverter drive frequency.

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