JP2013104618A - Indoor circulation type range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent air after purification from being discharged in a direction occupied by people, in an indoor circulation type range hood.SOLUTION: The indoor circulation type range hood having exhaust outlets for discharging air purified by a filter into a room has the exhaust outlets having shutters controllable to open and close respectively at least two faces of a front face, a right side face, left side face, and a back face of the indoor circulation type range hood, and a control section controlling the opening and closing of the shutter.

Description

  The present invention relates to a range hood, and more particularly, to an indoor circulation type range hood that sucks air containing contaminants generated by cooking and discharges the air into the room after cleaning the contaminants.

  An indoor circulation type range hood that removes pollutants such as odor and oily smoke generated by using an IH cooker that does not generate combustion gas such as carbon dioxide with various filters provided inside, and discharges purified air into the room. Are known. This indoor circulation type range hood usually has a single or a plurality of exhaust ports in the direction designed for each product such as the front and side surfaces, and purified air is discharged from the exhaust ports.

  For example, in Patent Document 1, a circulation air passage that includes a cleaning device and supplies clean air into the room separately from the exhaust air passage is provided, and the exhaust fan in the exhaust air passage is operated and the circulation air passage. A circulating range hood is disclosed in which a circulating fan is operated to supply clean air into the room.

JP 2011-89739 A

Furthermore, in recent years, island kitchens and face-to-face kitchens have become popular as forms of kitchens in houses. In such a kitchen configuration, a ceiling-suspended type or side-type indoor circulation type range hood is generally attached.
However, in the ceiling hanging type and the side type installed in the island kitchen and the face-to-face kitchen in this way, there is a possibility that people are present in directions other than the cook side. In such a case, in the conventional indoor circulation type range hood, the exhaust port is fixed and is purified air, but it may be uncomfortable by direct contact with the human body.
Also, in the indoor circulation range hood, if a large amount of air containing pollutants is generated by cooking, it cannot be cleaned completely, or the hood part of the indoor circulation range hood cannot be completely captured, and contaminants are trapped in the room. Contained air may leak out.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to enable the discharge of purified air to be controlled at a plurality of exhaust ports into the room. To provide an indoor circulation type range hood that prevents discharge in the direction in which people are present or reduces the amount of air discharged in the direction in which people are present. In addition, it is possible to efficiently exhaust air containing pollutants to the outdoors by further providing an auxiliary exhaust device that can control the discharge of the purified air at a plurality of exhaust ports into the room and can be forcibly exhausted outdoors. It is to provide an indoor circulation range hood that can be used.

In order to solve the above problems, an air inlet that sucks air containing contaminants generated by cooking, a filter that cleans the air sucked from the air inlet, and the air cleaned by the filter An indoor circulation type range hood provided with an exhaust outlet for discharging to the at least two surfaces of the front, right side, left side, and back of the indoor circulation range hood. There is provided an indoor circulation type range hood including an exhaust port and a control unit that controls opening and closing of the shutter.
According to this, the indoor circulation type range hood which can select the exhaust port which exhausts the purified air from the several exhaust port can be provided.

Further, a human sensor for detecting a person existing in a direction of a surface on which the exhaust port is provided, and the control unit includes the shutter of the exhaust port in a direction in which the human sensor detects the presence of a person. It may be characterized by closing.
According to this, it is possible to provide an indoor circulation type range hood that senses the direction in which the person is present by the human sensor and reliably prevents the air purified in the direction in which the person is present.

Further, when the human sensor detects that a person is present in all directions in which the exhaust ports are provided, the control unit may open the shutters of all the exhaust ports.
According to this, by opening all the exhaust ports, the amount of discharged air can be dispersed and the wind speed per one exhaust port can be lowered, so that the discomfort caused by the direct impact of the wind on the human body can be reduced. An indoor circulation type range hood can be provided.

Furthermore, the apparatus further comprises an environment detection unit having at least one of an odor sensor, a humidity sensor, and a smoke sensor, and an auxiliary exhaust device that exhausts indoor air to the outside of the room, and the detection value detected by the environment detection unit is previously When a predetermined set value is exceeded, the control unit transmits an interlocking signal to the auxiliary exhaust device to operate the auxiliary exhaust device, and at the same time the exhaust port provided in the direction in which the auxiliary exhaust device exists The shutter may be opened, and the shutter of the exhaust port provided in the other direction may be closed.
According to this, when pollutants exceeding the air purification capacity of the indoor circulation type range hood are generated and the indoor environment may be deteriorated, it is possible to exhaust the outdoors by operating the auxiliary exhaust device. In such a case, exhaust air that is not completely cleaned and contains pollutants toward the auxiliary exhaust system, so that the air containing the surrounding pollutants can be efficiently exhausted to the outside. It is possible to provide an indoor circulation range hood that can be used.

  As described above, according to the present invention, it is possible to control the discharge of purified air at a plurality of exhaust ports into the room, thereby preventing discharge in the direction in which people are present, or It is possible to provide an indoor circulation type range hood that reduces the amount of air discharged in the direction in which a person is present. Furthermore, the indoor circulation type range hood which can be efficiently exhausted outdoors can be provided by exhausting the air containing the contaminants that could not be cleaned toward the auxiliary exhaust device.

Sectional drawing of the 1st Example of the indoor circulation type range hood which concerns on this invention. The kitchen elevation at the time of applying the 1st example of the indoor circulation type range hood concerning the present invention to a kitchen. The kitchen top view at the time of applying the 1st Example of the indoor circulation type range hood which concerns on this invention to a kitchen. The relationship diagram of the control part in the 1st Example of the indoor circulation type range hood which concerns on this invention, an exhaust port, etc. FIG. The flowchart 1 of the control part in the 1st Example of the indoor circulation type range hood which concerns on this invention. The flowchart 2 of the control part in the 1st Example of the indoor circulation type range hood which concerns on this invention.

Embodiments according to the present invention will be described below with reference to the drawings.
<First Example>
FIG. 1 shows a sectional view of a first embodiment of an indoor circulation type range hood according to the present invention. The indoor circulation type range hood 1 is provided above a cooker, for example, an IH cooker that does not generate combustion gas, and an intake port 10 for sucking air containing contaminants generated by cooking is provided in the indoor circulation type range hood 1. Prepare at the bottom. In the present embodiment, the indoor circulation type range hood 1 includes a flat and thin hood portion 5 for capturing air containing contaminants around the intake port 10, and further facilitates suction of air containing contaminants. Therefore, the rectifying plate 3 is provided below the air inlet 10 so as to form a gap with the inner peripheral edge of the hood portion 5.

  The indoor circulation type range hood 1 includes a fan unit 8 inside the duct cover 4 and immediately above the intake port 10. The fan unit 8 includes a sirocco fan and an electric motor 81 connected to the sirocco fan. When the fan unit 8 is in operation, the fan unit 8 sucks air containing contaminants from the air inlet 10 and blows it upward. Air containing contaminants blown upward passes through a filter 30 provided inside the duct cover 4 and above the fan unit 8. In this embodiment, since the static pressure is high, a sirocco fan is used, but it is not limited to this.

  The filter 30 is composed of two filters, and the lower filter 30 (upstream filter) is a grease filter (glass wool) for removing mainly oil and fat in contaminants contained in the air blown out by the fan unit 8. Woven fabrics such as woven fabrics, non-woven fabric filters, lath nets, slot filters, metal filters such as punching metal). The upper filter 30 (downstream filter) is a filter made of a continuous porous foam in which a deodorizing element adsorbed with inorganic ions is attached. The filter 30 removes fats and oils and odor components from the air and cleans the air. The filter 30 may be able to remove fats and oils and odor components from the air containing contaminants, but is not limited thereto. For example, the upper filter 30 may be provided with a deodorizing material carrying a photocatalyst.

  The air that has passed through the filter 30 and has been cleaned rises in the duct cover 4 and passes through the exhaust port 20 provided on the side of the duct cover 4 above the filter 30 and out of the duct cover 4, that is, indoors. Is discharged. Since the duct cover 4 has a quadrangular prism shape in the case of the present embodiment, the exhaust ports 20 are respectively opened on the four lateral sides of the quadrangular columnar duct cover 4. Each exhaust port 20 includes a shutter 21 that can be controlled to open and close. The exhaust port 20 that opens the shutter 21 discharges air, and the exhaust port 20 that closes the shutter 21 does not discharge air.

  In this embodiment, since the duct cover 4 is a quadrangular prism, a total of four exhaust ports 20 are provided on each of the four side surfaces. However, the present invention is not limited to this, and two or more exhaust ports are provided on one side surface. If the duct cover 4 is a triangular prism, a total of three exhaust ports may be provided on each of the three side surfaces. Further, when the duct cover 4 is a cylinder, a plurality of exhaust ports may be appropriately provided on the side surface of the cylinder, and the plurality of exhaust ports may cover all directions around the cylinder as the blowing direction of the cleaning air.

  Further, the exhaust port 20 may not be opened on each of the four lateral side surfaces of the quadrangular columnar duct cover 4. That is, the exhaust port 20 may be provided on at least two of the four lateral surfaces. For example, it may be only two places on the front and back of the indoor circulation type range hood 1. Of course, as in the present embodiment, the exhaust ports 20 may be provided on all of the front, right side, left side, and back of the indoor circulation type range hood 1. By being provided on at least two surfaces of the indoor circulation type range hood 1, it is possible to select an exhaust port for exhausting purified air from among a plurality of exhaust ports. In the present invention, a plurality of exhaust ports having different discharge directions are provided, and the amount of air exhausted from these exhaust ports can be controlled.

  The indoor circulation type range hood 1 further includes a control unit 40 for controlling the opening and closing of the shutter 21 in the vicinity of the fan unit 8 in this embodiment. The place provided is not limited to this, and may be in the vicinity of the exhaust port 20, for example. The indoor circulation type range hood 1 further includes four human sensors 50, one on each side of the hood portion 5 (in this figure, two locations on the front surface 5F and the rear surface 5B of the hood portion 5 are provided). Only two human motion sensors 50 are shown). The human sensor 50 is not particularly limited, and may be any sensor that can detect the presence or absence of a person, such as a pyroelectric infrared sensor, an ultrasonic sensor, a microwave sensor, or a distance measuring sensor. In addition, the control method of the shutter 21 based on the human sensor 50 performed by the control unit 40 will be described later.

  The indoor circulation type range hood 1 further includes an environment detection means 60 having at least one of an odor sensor, a humidity sensor, and a smoke sensor on one side surface (front side) of the duct cover 4 and in the vicinity of the upper end of the duct cover 4. Prepare. The odor sensor is not particularly limited, and may be, for example, a metal oxide semiconductor (MOS) sensor that measures a change in electrical resistance by an oxidation-reduction reaction. The humidity sensor is not particularly limited, and may be a sensor that directly detects the relative humidity as a change in physical properties or shape of the sensitive part, or a sensor that indirectly calculates the temperature and water vapor pressure of the atmosphere. The smoke sensor is not particularly limited, and may be an optical sensor or an ion sensor.

  Furthermore, it demonstrates with reference to FIG. 2 which is a kitchen elevation at the time of applying the indoor circulation type range hood 1 to a kitchen, and FIG. 3 which is a kitchen top view. FIG. 2 is an elevation view seen from the back side of the indoor circulation type range hood 1. A kitchen table K and a dining table DT are installed on the floor F of the kitchen. The kitchen table K has an IH cooker K1 and a sink K2 on the upper surface. The indoor circulation type range hood 1 is provided above the IH cooker K1 and is fixed to the ceiling C. From cooking pots placed on the IH cooker K1, by cooking, air containing contaminants such as fats and oils, odor components, smoke and water vapor rises upward with hot air, and the hood 5 of the indoor circulation range hood 1 Basically captured. The trapped air containing the contaminants is cleaned from the air inlet 10 (not shown) through the duct cover 4 by an internal filter 30 (not shown), exhausted from the air outlet 20, and is discharged to the kitchen. Returned.

  The auxiliary exhaust device 70 that exhausts indoor air to the outside of the room is installed on the wall W of the kitchen closest to the indoor circulation type range hood 1 and about the same height as the height of the exhaust port 20 from the floor F. ing. The auxiliary exhaust device 70 is preferably installed at a location closest to the exhaust port 20, but may be in a range where the air discharged from the exhaust port 20 can reach. The auxiliary exhaust device 70 includes a fan and may exhaust indoor air to the outside through an opening that leads to the outside at the position of the installed wall, or communicates with an opening provided at a position different from the installed wall. Indoor air may be exhausted outside through the duct. The auxiliary exhaust device 70 is typically a ventilation fan.

  The indoor circulation type range hood 1 has exhaust ports 20 on all side surfaces (front surface 5F side, right side surface 5RS side, left side surface 5LS side, back surface 5B side) of the rectangular columnar duct cover 4. Among these, the exhaust port 20 provided on the right side 5RS side faces the auxiliary exhaust device 70 side, and is the exhaust port closest to the auxiliary exhaust device 70.

  The control unit 40 can have preset values for the allowable upper limit values related to the odor, humidity, and smoke concentrations detected by the odor sensor, humidity sensor, and smoke sensor of the environment detection means 60. Typically, these setting values are stored in a non-volatile memory. On the other hand, the environment detection means 60 detects the concentrations of odor, humidity, and smoke continuously or periodically, and reports the detected values to the control unit 40. And the control part 40 compares these set values with the value which each sensor detected continuously or regularly.

  Usually, the hood part 5 of the indoor circulation type range hood 1 captures air containing fats and oils, odor components, smoke, water vapor and other contaminants rising upward from a pan or the like placed on the IH cooker K1. However, when a large amount of cooking is performed at once, contaminants exceeding the air purification capability of the indoor circulation type range hood 1 may be generated, or contaminants may be generated that the hood unit 5 cannot capture. In this case, the air containing the contaminants cannot be completely cleaned by the filter 30 and is exhausted from the exhaust port 20 into the room, or reaches the vicinity of the overflow ceiling C from the hood unit 5. Then, the odor sensor, the humidity sensor, and the smoke sensor of the environment detection means 60 provided near the upper end of the duct cover 4, that is, provided near the ceiling C are air containing contaminants that the hood unit 5 could not capture. Odor components, smoke and water vapor are detected.

  When any one of the odor, humidity, and smoke concentration detected by the environment detection means 60 in this way or a combination thereof exceeds a predetermined set value (allowable upper limit value), the control unit 40 sets the auxiliary exhaust device. The auxiliary exhaust device 70 is operated by transmitting an interlocking signal to 70. Further, the control unit 40 opens the shutter 21 of the exhaust port 20 provided in the direction in which the auxiliary exhaust device 70 exists, that is, the right side surface 5RS in this embodiment, and the other direction. The shutter 21 of the exhaust port 20 provided in is closed. By doing so, when the pollutant exceeding the air purification capability of the indoor circulation type range hood 1 is generated and the indoor environment may be deteriorated, the auxiliary exhaust device removes the air containing the pollutant that could not be cleaned. By discharging toward 70, air containing surrounding contaminants can be efficiently exhausted to the outdoors.

  The indoor circulation type range hood 1 includes a total of four human sensors 50, one on each side of the hood portion 5. More specifically, the human sensor 50 is attached to the front surface 5F, the right side surface 5RS, the left side surface 5LS, and the back surface 5B of the hood portion 5. Accordingly, when a person is present on the front side of the indoor circulation type range hood 1, that is, when a person is present in front of the IH cooker K1, the presence sensor 50 attached to the front surface 5F senses the presence of the person. . Similarly, when a person exists on the back side of the indoor circulation type range hood 1, that is, when a person exists around the dining table DT, the human sensor 50 attached to the back surface 5B senses the presence of the person. In this way, by providing the human sensor 50 that senses the presence of a person in the direction of the surface on which the exhaust port 20 is provided, the direction of the air exhausted from the exhaust port 20 is controlled according to the presence of the person. Is possible.

  The function of the control unit 40 will be described with reference to FIGS. FIG. 4 shows a relationship diagram between the control unit 40 of the indoor circulation type range hood 1, the exhaust port 20, the human sensor 50, and the shutter 21. 5 and 6 show a flowchart of the control unit of the indoor circulation type range hood 1. The exhaust port 1 shown in FIG. 4 is the exhaust port 20 provided on the front surface 5F side, the exhaust port 2 is the exhaust port 20 provided on the right side surface 5RS side, and the exhaust port 3 is the exhaust gas provided on the back surface 5B side. The port 20 and the exhaust port 4 indicate the exhaust port 20 provided on the left side 5LS side. The exhaust port 1 is associated with the human sensor 1 that is the human sensor 50 attached to the front surface 5F side, and the exhaust port 1 and the shutter 1 that is the shutter 21 attached to the exhaust port 1 are associated with each other. And are related. The same applies to the other exhaust ports.

  For example, when the human sensor 1 senses the presence of a person, a signal indicating it reaches the control unit 40. It does not matter whether the signal is delivered by wire / wireless, electrical / optical / mechanical. Conversely, when the human sensor 1 no longer senses the presence of a person, a signal indicating that the human sensor 1 senses the presence of a person does not arrive. Therefore, the control unit 40 determines whether or not there is a person in the direction based on the presence or absence of a signal indicating that the human sensor detects the presence of the person. Note that the determination method of the control unit 40 is not limited to this. For example, the human sensor sends a signal indicating that the presence of a person is not sensed, thereby determining that the person does not exist. May be.

  When the human sensor 50 detects that a person is present and the control unit 40 determines that a person is present, the control unit 40 issues a command to close the shutter 21 of the exhaust port 20 in the same direction as the direction in which it is determined that a person exists. put out. For example, when the signal indicating that the presence of a person is detected is received from the human sensor 3, the control unit 40 issues a command to close the shutter 3 attached to the exhaust port 3. Conversely, when the control unit 40 determines that there is no person, the control unit 40 issues a command to open the shutter 21 of the exhaust port 20 in the same direction as the direction in which it is determined that no person exists. The shutter that has received the command can open and close the shutter portion by an electric motor or the like. According to this, it is possible to reliably prevent the human sensor from detecting the direction in which the person is present and discharging the purified air in the direction in which the person is present based on the detected direction.

  It should be noted that not only when one human sensor 50 senses the presence of a person, but there are two human sensors 50, for example, people in front of the sink K2, and human presence on the front 5F side and the left side 5LS side. Even when the sensor 50 (the human sensor 1 and the human sensor 4) senses the presence of a person, the control unit 40 can be similarly controlled.

  In addition, by setting the direction in which people are often present in the control unit 40 in advance, it is possible to close the shutter of the exhaust port in that direction in advance. For example, since it can be assumed that there are many people around the dining table DT, it can be set in advance that the shutter 3 of the exhaust port 3 is closed in the control unit 40. According to this, when operating the indoor circulation type range hood 1, the shutter 3 can be closed from the beginning.

  Further, when the human sensor 50 detects that a person is present in all directions in which the exhaust ports are provided, the control unit 40 may open the shutters 21 of all the exhaust ports 20. That is, when all of the human sensors 1 to 4 detect the presence of a person, the control unit 40 may issue a command to open all the shutters 1 to 4. By doing so, the amount of air discharged can be dispersed and the air speed of air discharged from one discharge port can be lowered, so that it is possible to reduce discomfort caused by the direct hit of the human body.

  A control method of the control unit 40 will be described with reference to the flowchart of FIG. The step is abbreviated as S. In S100, the operation of the indoor circulation type range hood 1 is started. Specifically, the indoor circulation range hood 1 is turned on. Independently or independently of the control of the fan unit 8, in S102, all the human sensors 50 try to detect the presence of a person. S <b> 102 is continuously and periodically repeated while the indoor circulation type range hood 1 is switched on, so that the control unit 40 can control based on the latest information regarding the presence or absence of a person. .

  The control unit 40 identifies the direction in which the person exists in S104 based on the latest information regarding the presence or absence of the person. For example, when the person who turned on the indoor circulation type range hood 1 is on the front 5F side of the indoor circulation type range hood 1, the control unit 40 determines that the person exists on the front 5F side. Identify. Further, if a person is present around the dining table DT, the control unit 40 specifies that the person is present also on the back surface 5B side of the indoor circulation type range hood 1.

  In S106, the control unit 40 checks whether or not there is a person in the direction of all the exhaust ports. Based on the above assumption, the control unit 40 closes the shutter 21 of the exhaust port 20 in the direction in which the person is present and closes the other in S108 because the person is present only on the front 5F side and the back 5B side. A command to open the shutter 21 of the direction exhaust port 20 is issued. More specifically, the shutters of the front 5F side exhaust port 1 and the back surface 5B side exhaust port 3 where a person is present are closed, and the shutters of the right side surface 5RS side exhaust port 2 and the left side surface 5LS side exhaust port 4 where no person is present. Open.

  Furthermore, if a person exists also on the right side 5RS side and the left side 5LS side of the indoor circulation type range hood 1, the control unit 40 specifies that a person exists in the direction of all the exhaust ports. In this case, if the shutters of the exhaust ports in all directions are closed, air containing contaminants cannot be sucked, which is not preferable. Therefore, when it is determined that there is a person in the direction of all the exhaust ports, the control unit 40 opens the shutters 21 of all the exhaust ports 20 in S110. By doing so, even if there is a person in all directions, the air containing the pollutant will not be inhaled, and the discharged air volume is dispersed and discharged from one outlet. Since the wind speed of the air can be reduced, it is possible to reduce discomfort caused by the direct impact of the wind on the human body.

  If the direction in which a person is often present is set in the control unit 40 in advance, before the human sensor 50 senses in S102, the direction of the exhaust port 20 in that direction is set as the direction in which the person is present. The shutter 21 can be closed.

  A control method of the control unit 40 in the case where the environment detection unit 60 and the auxiliary exhaust device 70 are present will be described with reference to the flowchart of FIG. In S200, the operation of the indoor circulation type range hood 1 is started. Independently or independently of the control of the fan unit 8, in S202, the environment detection means 60 detects an odor or the like. In S204, the control unit 40 compares the detected value such as the odor detected in S202 with a predetermined set value. If the detected value does not exceed the set value, the control unit 40 returns to S202 and the environment detecting means 60 again detects the odor. Etc. are detected.

  When the detected value exceeds the set value in S204, the control unit 40 operates the auxiliary exhaust device 70 in S206. That is, for example, odor, smoke, water vapor and the like that cannot be captured by the hood unit 5 are generated by cooking, and the environment detecting means 60 provided near the ceiling causes the odor, smoke, or the like to exceed the set value. When the water vapor is detected, the auxiliary exhaust device 70 is operated in order to forcibly discharge the water vapor to the outside (outdoor).

  Further, in S208, the shutter 21 of the exhaust port 20 in the direction in which the auxiliary exhaust device 70 exists is opened, and the shutters 21 of the other exhaust ports 20 are closed. Specifically, the shutter 2 of the exhaust port 2 on the right side surface 5RS side where the auxiliary exhaust device 70 is present is opened, and the shutters of the other exhaust ports 1, 3, and 4 are closed. By doing in this way, even if the contaminant which exceeded the air purification capability of the indoor circulation type range hood 1 generate | occur | produced, the indoor circulation type range hood 1 does not contain the air containing the contaminant which could not be cleaned. By discharging toward the auxiliary exhaust device 70, air including surrounding contaminants can be efficiently exhausted outdoors.

  In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible.

DESCRIPTION OF SYMBOLS 1 Indoor circulation type range hood 3 Rectifying plate 4 Duct cover 5 Hood 8 Fan unit 10 Intake port 20 Exhaust port 21 Shutter 30 Filter 40 Control part 50 Human sensor 60 Environment detection means 70 Auxiliary exhaust device 5F Front surface 5B Rear surface 5RS Right side surface 5LS Left side K Kitchen stand K1 IH cooker K2 Sink W Wall F Floor C Ceiling DT Dining table

Claims (4)

An intake port for sucking air containing contaminants generated by cooking, a filter for cleaning the air sucked from the intake port, and an exhaust port for discharging the air cleaned by the filter into the room Indoor circulation type range hood,
At least two surfaces of the indoor circulation type range hood, the front surface, the right side surface, the left side surface, and the back surface, each provided with a shutter that can be controlled to open and close,
A control unit for controlling opening and closing of the shutter;
Indoor circulation type range hood equipped with.   A human sensor for detecting a person present in the direction of the surface provided with the exhaust port is further provided, and the control unit closes the shutter of the exhaust port in a direction in which the human sensor detects the presence of a person. The indoor circulation type range hood according to claim 1.   3. The indoor circulation according to claim 2, wherein when the human sensor detects that a person is present in all directions in which the exhaust ports are provided, the control unit opens the shutters of all the exhaust ports. Formula range hood. Environmental detection means having at least one of an odor sensor, a humidity sensor, and a smoke sensor;
An auxiliary exhaust device that exhausts indoor air to the outside, and
When the detected value detected by the environment detection means exceeds a predetermined set value, the control unit transmits an interlocking signal to the auxiliary exhaust device to operate the auxiliary exhaust device, and the auxiliary exhaust device The indoor circulation type range hood according to any one of claims 1 to 3, wherein the shutter of the exhaust port provided in the existing direction is opened and the shutter of the exhaust port provided in the other direction is closed. .