JP5493809B2 - Oil smoke purification device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an oil smoke purification device for purifying oil smoke generated during cooking in a kitchen or the like.

  Conventionally, various types of range hoods installed in kitchens have been proposed. Among these, there is a device (oil smoke purification device) that not only exhausts oil smoke and the like to the outside but also collects oil with high efficiency and removes unpleasant odors. Among these, what has a feature in the exhaust air path has been proposed in which the air path is switched by a damper in accordance with the operating state of the apparatus (for example, see Patent Document 1).

  Hereinafter, the oil smoke purification apparatus will be described with reference to FIG.

  A conventional oil and smoke purification apparatus 101 includes an air inlet 103 toward the cooking device 102, an air outlet 104 outdoors, and a blower 105 in the air passage. The smoke exhaust duct 106 includes a storage unit 107 that temporarily stores oil and odor, and the bypass passage 108 includes a purification unit 109 that purifies oil. The storage unit 107 includes an adsorbent obtained by forming activated carbon into a honeycomb shape and a heater disposed in the vicinity of the upstream side. The purification unit 109 includes a catalyst formed in a honeycomb shape and a heater disposed in the vicinity of the upstream side. A damper 110 that closes either the bypass passage 108 or the smoke exhaust duct 106 is provided at the inlet of the bypass passage 108. A solid line arrow in the figure indicates the flow of air, and a broken line and a broken line arrow indicate how the damper 110 is movable.

  During cooking, the damper 110 is closed by the damper 110 and the smoke exhaust duct 106 is opened, and then the blower 105 is driven to suck the oil smoke generated by the cooking device 102. At this time, in the storage unit 107, the oil is adhered and separated, and the odor is removed by adsorption. After cooking, after the smoke exhaust duct 106 is closed by the damper 110 and the bypass passage 108 is opened, the adsorbent is heated by the heater in the storage unit 107 to release the adhering and adsorbed components, and this is purified. It is introduced into 109 with a small air volume, purified and discharged.

JP-A-2-25648

  In such a conventional oil smoke purification device, an adsorbent such as activated carbon is provided as a deodorizing means, but since this is an air passage configuration exposed to oil smoke, oil adheres to the adsorbent and the deodorizing performance is descend. Even if an oil smoke removing means having a high collection rate is provided upstream of the adsorbent, the adhesion of oil cannot be made zero, and thus there is a problem that performance deterioration cannot be avoided.

  Therefore, the present invention solves the above-described conventional problems, and an object of the present invention is to provide an oil and smoke purification device in which oil does not adhere to an adsorbent or the like constituting deodorizing means and deodorization performance does not deteriorate.

And in order to achieve this object, the oil smoke purification device of the present invention comprises an intake port for sucking oil smoke and odor generated by cooking with a cooking device , and a sub-intake port opened in a direction different from the intake port. A main air passage communicating with the air inlet, a sub air passage connecting the sub air inlet and a part of the main air passage, and a damper for closing either the main air passage or the sub air passage; , Air blowing means for circulating air through the main air passage and the sub air passage, and an exhaust port communicating with the main air passage and the sub air passage, wherein the main air passage is provided with oil smoke removing means, A deodorizing means is arranged in the air passage, and this achieves the intended purpose.

In addition, the oil smoke purification apparatus of the present invention is connected to an intake port for sucking oil smoke and odor generated by cooking with a cooking device, a main air passage communicating with the intake air, and a part of the main air passage. An auxiliary air passage, a damper that closes one of the main air passage and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and the main air passage and the auxiliary air An exhaust port that communicates with the road, and the main air passage has an oil smoke removing means, a heat detecting means upstream of the oil smoke removing means, and a deodorizing means in the auxiliary air passage, and the heat detecting means. The damper closes the secondary air passage when the detected air temperature is higher than the preset temperature, and closes the main air passage when the air temperature is lower than the preset temperature. Is achieved.

In addition, an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air A damper that closes one of the road and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage. The main air passage has an oil smoke removing means and a water vapor detecting means in the main air passage upstream of the oil smoke removing means, and a deodorizing means is arranged in the sub air passage, and the heat detecting means detects water vapor. In this case, the damper closes the auxiliary air passage when it is detected, and closes the main air passage when it is not detected, thereby achieving the intended purpose.

In addition, an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air A damper that closes one of the road and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage. Provided with an oil smoke removing means in the main air passage and a deodorizing means in the auxiliary air passage, and the volume of the room in which the oil smoke purification device is installed is V (m ^Three ), The suction air volume of the smoke purification device is Q (m ^Three / H), the intended purpose is achieved by operating at 2 V / Q (h) or more after the main wind path is closed.

According to the oil smoke purification apparatus of the present invention, the intake port for sucking oil smoke and odor generated by cooking with a cooking utensil, the auxiliary intake port that opens in a direction different from the intake port, and the main communication with the intake port An air passage, a sub air passage connected to the sub air inlet and a part of the main air passage, a damper that closes one of the main air passage and the sub air passage, the main air passage and the sub air passage Blower means for circulating air in the air path, and an exhaust port communicating with the main air path and the sub air path, oil smoke removing means in the main air path, deodorizing means in the sub air path, It was configured to arrange.

  Of the odors generated during cooking, it is considered that the ones that people feel uncomfortable are not the odors during cooking, but the residual odors generated from the adhered oil after cooking. In the oil smoke purification apparatus of the present invention, during cooking, the damper closes the auxiliary air passage, and the oil smoke is removed by the oil smoke removing means arranged in the main air passage. After cooking, the damper closes the main air passage and removes residual odor by deodorizing means arranged in the sub air passage. Thereby, oil does not adhere to the adsorbent or the like constituting the deodorizing means, and the deodorizing performance does not deteriorate. Therefore, the maintenance and replacement span of the deodorizing filter can be lengthened, and the labor of the user can be reduced.

In particular, by sucking not only from the air intake port but also from the sub air intake port, the odor diffused in the room can be quickly sucked and it can be prevented from becoming unpleasant due to the residual odor after cooking. Further, by providing the auxiliary air inlet, it is possible to perform a deodorizing operation even during cooking, and it is possible to prevent unpleasantness due to a residual odor after cooking.

In addition, an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air A damper that closes one of the road and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage. An oil smoke removing means and a heat detecting means upstream of the oil smoke removing means and a deodorizing means in the auxiliary air passage are arranged in the main air passage, and an air temperature detected by the heat detecting means is set. When the temperature is higher than the temperature, the damper closes the auxiliary air passage, and when the temperature is lower than the set temperature, the main air passage is closed.

Thereby, even when a damper cannot interlock | cooperate with a cooking appliance, it can prevent that a deodorizing means is accidentally exposed to oil smoke. Moreover, the deodorizing function can be operated reliably.

In addition, an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air A damper that closes one of the road and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage. The main air passage has an oil smoke removing means and a water vapor detecting means in the main air passage upstream of the oil smoke removing means, and a deodorizing means is arranged in the sub air passage, and the heat detecting means detects water vapor. The damper closes the secondary air passage when it is operated, and closes the main air passage when it is not detected.

Thereby, even when the oil smoke purification apparatus of the present invention cannot be interlocked with the cooking utensil, it is possible to prevent the deodorizing means from being accidentally exposed to the oil smoke. Moreover, the deodorizing function can be operated reliably.

In addition, an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air A damper that closes one of the road and the auxiliary air passage, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage. Provided with an oil smoke removing means in the main air passage and a deodorizing means in the auxiliary air passage, and the volume of the room in which the oil smoke purification device is installed is V (m ^Three ), The suction air volume of the smoke purification device is Q (m ^Three / H), the main wind path is closed and the vehicle is operated at 2 V / Q (h) or more.

Thereby, even when the exhaust port is in the room, the air in the room passes through the deodorizing means at least twice, and a sufficient deodorizing effect is obtained.

The block diagram which shows the cross section of the oil smoke purification apparatus of Embodiment 1 of this invention Graph showing the effect of oil adhesion on activated carbon The block diagram which shows the cross section of the oil smoke purification apparatus of Embodiment 2 of this invention The block diagram which shows the cross section of the conventional oil smoke purification apparatus

The invention according to claim 1 of the present invention includes an intake port that sucks in smoke and odor generated by cooking with a cooking device, a sub-intake port that opens in a different direction from the intake port, and communication with the intake port. A main air passage, a sub air passage connected to the sub air inlet and a part of the main air passage, a damper for closing either the main air passage or the sub air passage, the main air passage, Blower means for circulating air in the auxiliary air passage, and an exhaust port communicating with the main air passage and the auxiliary air passage, oil smoke removing means in the main air passage, and deodorizing means in the auxiliary air passage Is an oil smoke purification device characterized by being arranged.

  Of the odors generated during cooking, it is considered that the ones that people feel uncomfortable are not the odors during cooking, but the residual odors generated from the adhered oil after cooking. In the oil smoke purification apparatus of the present invention, during cooking, the damper closes the auxiliary air passage, and the oil smoke is removed by the oil smoke removing means arranged in the main air passage. After cooking, the damper closes the main air passage and removes residual odor by deodorizing means arranged in the sub air passage. Thereby, oil does not adhere to the adsorbent or the like constituting the deodorizing means, and the deodorizing performance does not deteriorate. Therefore, the maintenance and replacement span of the deodorizing filter can be lengthened, and the labor of the user can be reduced.

In particular, by sucking not only from the air intake port but also from the sub air intake port, the odor diffused in the room can be quickly sucked and it can be prevented from becoming unpleasant due to the residual odor after cooking. Further, by providing the auxiliary air inlet, it is possible to perform a deodorizing operation even during cooking, and it is possible to prevent unpleasantness due to a residual odor after cooking.

The invention according to claim 2 of the present invention includes an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a part of the main air passage, An auxiliary air passage to be connected; a damper that closes one of the main air passage and the auxiliary air passage; air blowing means that distributes air to the main air passage and the auxiliary air passage; the main air passage and the main air passage; An exhaust port that communicates with the auxiliary air passage, wherein the main air passage is provided with oil smoke removing means, a heat detecting means upstream of the oil smoke removing means, and a deodorizing means is provided in the auxiliary air passage, and the heat When the air temperature detected by the detecting means is equal to or higher than the set temperature, the damper closes the auxiliary air passage, and when the air temperature is lower than the preset temperature, the main air passage is closed.

  Thereby, even when a damper cannot interlock | cooperate with a cooking appliance, it can prevent that a deodorizing means is accidentally exposed to oil smoke. Moreover, the deodorizing function can be operated reliably.

The invention according to claim 3 of the present invention includes an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage that communicates with the air inlet, and a part of the main air passage. An auxiliary air passage to be connected; a damper that closes one of the main air passage and the auxiliary air passage; air blowing means that distributes air to the main air passage and the auxiliary air passage; the main air passage and the main air passage; An exhaust port communicating with the auxiliary air passage, and the main air passage has an oil smoke removing means , a water vapor detecting means in the main air passage upstream of the oil smoke removing means, and a deodorizing means in the auxiliary air passage. In the oil smoke purification apparatus, the damper closes the auxiliary air passage when water vapor is detected by the heat detection means, and closes the main air passage when the water vapor is not detected.

  Thereby, even when the oil smoke purification apparatus of the present invention cannot be interlocked with the cooking utensil, it is possible to prevent the deodorizing means from being accidentally exposed to the oil smoke. Moreover, the deodorizing function can be operated reliably.

The invention according to claim 4 of the present invention includes an air inlet that sucks in smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, and a part of the main air passage. An auxiliary air passage to be connected; a damper that closes one of the main air passage and the auxiliary air passage; air blowing means that distributes air to the main air passage and the auxiliary air passage; the main air passage and the main air passage; An exhaust port that communicates with the auxiliary air passage, oil smoke removing means is arranged in the main air passage, deodorizing means is arranged in the auxiliary air passage, and the volume of the room in which the oil smoke purification device is installed is V (m ³ ), The oil smoke purification device is operated at 2 V / Q (h) or more after the main air passage is closed when the suction air volume of the oil smoke purification device is Q (m ³ / h).

  Thereby, even when the exhaust port is in the room, the air in the room passes through the deodorizing means at least twice, and a sufficient deodorizing effect is obtained.

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

(Embodiment 1)
FIG. 1 is a configuration diagram showing a cross section of the oil smoke purification apparatus according to Embodiment 1 of the present invention.

  The configuration of the oil smoke purification apparatus according to Embodiment 1 will be described.

  The oil smoke purification device 1 is connected to the cooking device 2 with an intake port 3 for sucking oil smoke and odor generated during cooking, a main air passage 4 communicating with the intake port 3, and a part of the main air passage 4. The auxiliary air passage 5, the damper 6 that closes one of the main air passage 4 and the auxiliary air passage 5, the air blowing means 7 that distributes air to the main air passage 4 and the auxiliary air passage 5, and the main air passage 4. And an exhaust port 8 communicating with the auxiliary air passage 5, an oil smoke removing means 9 is arranged in the main air passage 4, and a deodorizing means 10 is arranged in the auxiliary air passage 5.

  The inlet to the sub air passage 5 connected to the main air passage 4 was provided on the wall surface of the main air passage 4 downstream of the oil smoke removing means 9.

  The damper 6 was installed at the entrance of the auxiliary air passage 5.

  In addition to the intake port 3, an auxiliary intake port 11 communicating with the auxiliary air passage 5 is provided on the back of the apparatus.

  The oil smoke removing means 9 is made of laminated punching metal.

  The deodorizing means 10 is made of activated carbon formed into a honeycomb shape.

  Further, it is assumed that the oil smoke purification apparatus 1 is applied to a face-to-face kitchen, and the exhaust port 8 is opened toward the living room.

  In addition, the solid line arrow in a figure shows the flow of air, and a broken line and a broken line arrow show the mode of operation | movement of the damper 6. FIG.

  The operation and action of the oil smoke purification apparatus of the first embodiment will be described.

  When the user operates the cooking device 2 for cooking, the damper 6 closes the auxiliary air passage 5 and opens the main air passage 4 in conjunction therewith. At the same time, the air blowing means 7 is driven to suck the oil smoke generated by the cooking device 2. The oily smoke is removed by the oily smoke removing means 9 disposed in the main air passage 4, and the purified air is discharged from the exhaust port 8. During the operation of the cooking device 2, the auxiliary air passage 5 is kept closed.

  When the user finishes cooking and finishes the operation of the cooking device 2, the damper 6 closes the main air passage 4 and opens the sub air passage 5 in conjunction therewith. Then, the air containing the residual odor after cooking is introduced into the auxiliary air passage 5, the odor is removed by the deodorizing means 10 disposed in the auxiliary air passage 5, and the purified air is discharged from the exhaust port 8. At this time, the odor diffused into the living room from the auxiliary air inlet 11 on the back of the apparatus is sucked into the auxiliary air passage 5 and deodorized. If a shutter that can be opened and closed is installed at the auxiliary intake port 11, a deodorizing operation can be performed only after cooking.

The deodorizing operation after cooking is continued automatically for a certain period of time unless operated by the user. The time is 2 V / Q (after the main air passage 4 is closed when the volume of the room where the oil smoke purification device 1 is installed is V (m ³ ) and the suction air volume of the oil smoke purification device 1 is Q (m ³ / h). h).

  The effect of the oil smoke purification apparatus of Embodiment 1 is demonstrated.

  Of the odors generated during cooking, it is considered that the ones that people feel uncomfortable are not the odors during cooking, but the residual odors generated from the adhered oil after cooking. By adopting the air path configuration and operation of the oil smoke purification apparatus 1 of the present invention, the oil does not adhere to the activated carbon constituting the deodorizing means 10 and the deodorizing performance does not deteriorate. Therefore, the maintenance and replacement span of the deodorizing filter can be lengthened, and the labor of the user can be reduced.

  The effect on deodorization performance when oil adhered to activated carbon was confirmed by experiments. The result is shown in FIG.

  The experiment was performed as follows.

  As the activated carbon, a new granular activated carbon (new activated carbon) and an oil-attached product (oil-attached activated carbon) were prepared. Assuming that the oil to be deposited is generated by cooking, beef tallow and lard were mixed and heat-treated to be used as simulated oil. 139 mg of this simulated oil was attached to 1 g of activated carbon to obtain oil-attached activated carbon. Pentanal was selected as a simulation gas for residual odor after cooking.

  A 5 L container was charged with 1 g of new activated carbon or oil-attached activated carbon and pentanal diluted with air (humidity 0%), and the change over time in the concentration of pentanal was observed. The concentration of pentanal was determined using a gas chromatograph.

  From FIG. 2, the oil-attached activated carbon has a slower adsorption rate than the new activated carbon, and the concentration at which equilibrium is high. From this result, it was confirmed that the deodorization performance of the activated carbon deteriorated due to the adhesion of oil. Therefore, it was confirmed that it is important to maintain the deodorization performance that the activated carbon or the like constituting the deodorizing means in the oil smoke purification apparatus is not exposed to the oil smoke.

  In the oil and smoke purification apparatus 1, by sucking not only from the air inlet 3 but also from the auxiliary air inlet 11, the odor diffused in the living room can be quickly sucked and prevented from becoming unpleasant due to the residual odor after cooking Can do. Further, by providing the auxiliary intake port 11, a deodorizing operation can be performed even during cooking.

  Further, if the inlet to the auxiliary air passage 5 is provided upstream of the oil smoke removing means 9, the possibility of oil flowing into the auxiliary air passage 5 is increased. Therefore, the inlet is preferably provided downstream. Further, the oil smoke removing means 9 that collects the oil smoke can be a source of odor. By providing the inlet of the auxiliary air passage 5 downstream of the oil smoke removing means 9, the odor generated from the oil smoke removing means 9 can be introduced into the auxiliary air passage 5 and removed.

  Further, since the damper 6 is installed at the inlet of the auxiliary air passage 5, it is possible to reliably prevent oil from flowing into the auxiliary air passage 5, and to prevent the oil from adhering to the deodorizing means 10.

  Moreover, since the oil smoke during cooking and the residual odor after cooking can be purified and exhausted indoors, the oil smoke purification device 1 can be used as a circulation type range hood, and the degree of freedom of the kitchen layout is improved.

  Moreover, since the oil smoke purification apparatus 1 and the cooking device 2 are interlocked, it is possible to prevent the deodorizing means 10 from being accidentally exposed to the oil smoke. Moreover, the deodorizing function can be operated reliably.

  Further, since the deodorizing operation is automatically performed at 2 V / Q (h) or more, indoor air passes through the deodorizing means 10 at least twice, and a sufficient deodorizing effect is obtained.

  In the first embodiment, the damper 6 is a switching damper made of a plate member as shown in FIG. 1, but a louver damper may be provided in each of the main air passage 4 and the sub air passage 5. The damper 6 is not limited to a plate shape.

  In the first embodiment, the oil smoke removing means 9 is composed of punched metal. However, other grease filters or the like may be used as long as the oil smoke can be removed at a necessary collection rate.

  In Embodiment 1, activated carbon formed in a honeycomb shape is used as the deodorizing means 10, so that the deodorizing means 10 has a high deodorizing ability and can be configured at low cost. However, it is not limited to activated carbon, and other adsorbents may be used as long as odor can be removed with a necessary deodorization rate.

  Moreover, when deodorizing the odor diffused into the room from the auxiliary air inlet 11 during cooking, the odor diffused into the room can be removed even during cooking by increasing the air volume of the main air path 4 from the auxiliary air path 5. Since air is not sucked into the auxiliary air passage 5 more than necessary, an excessive load is not given to the deodorizing means 10. In order to increase the air volume of the main air passage 4 over the auxiliary air passage 5, the air passage cross-sectional area of the sub air passage 5 is made smaller than the air passage cross-sectional area of the main air passage 4, or an auxiliary blower is installed in the main air passage 4. May be installed.

(Embodiment 2)
FIG. 3 is a configuration diagram showing a cross section of the oil and smoke purification apparatus according to Embodiment 2 of the present invention.

  3, the same components as those in FIG. 1 are denoted by the same reference numerals. Since the basic configuration, operation, action, effect, and variation of the second embodiment are the same as those of the first embodiment, different points will be described.

  In the oil smoke purification apparatus 1, a dust sensor 12 is provided in the main air passage 4 upstream of the oil smoke removal means 9.

  When particulate matter having a diameter of 3 μm or more is detected by the dust sensor 12, the damper 6 closes the auxiliary air passage 5, and when it is not detected, the main air passage 4 is closed.

  Thereby, even when the oil smoke purification apparatus 1 cannot be interlocked with the cooking device 2, it is possible to prevent the deodorizing means 10 from being exposed to the oil smoke by mistake. Moreover, the deodorizing function can be operated reliably.

  Further, a temperature sensor such as a thermistor may be provided as a heat detecting means instead of the dust sensor 12. The damper 6 closes the auxiliary air passage 5 when the air temperature detected by the heat detection means is equal to or higher than a preset temperature, and closes the main air passage 4 when the air temperature is lower than the preset temperature. can get.

  Further, instead of the dust sensor 12, a water vapor detection means may be provided. When the water vapor is detected by the water vapor detecting means, the damper 6 closes the auxiliary air passage 5, and when it is not detected, the main air passage 4 is closed.

  A display unit for indicating that the deodorizing operation is being performed when the main air passage 4 is closed; and a changeover switch for arbitrarily switching whether the damper 6 closes the main air passage 4 or the sub air passage 5; May be provided. The oil smoke purification apparatus 1 cannot cook while the main air passage 4 is closed. Misuse can be prevented by installing a display panel in front of the device so that the user can check the operating state. Moreover, when it is desired to continue cooking, the deodorizing operation can be interrupted by a changeover switch for switching the air path to be arbitrarily closed.

  In the oil smoke purification apparatus according to the present invention, oil does not adhere to the adsorbent or the like constituting the deodorizing means, and the deodorizing performance does not deteriorate. Accordingly, the maintenance and replacement span of the deodorizing filter can be lengthened, and the user's labor can be reduced. Therefore, the deodorizing filter is useful as a range hood or the like for purifying oil smoke generated during cooking.

DESCRIPTION OF SYMBOLS 1 Oil smoke purification apparatus 2 Heating cooking appliance 3 Intake port 4 Main air path 5 Sub air flow path 6 Damper 7 Blower means 8 Exhaust opening 9 Oil smoke removal means 10 Deodorizing means 11 Sub air intake 12 Dust sensor 101 Oil smoke purification apparatus 102 Heat cooking utensil 103 Intake port 104 Exhaust port 105 Blower 106 Smoke duct 107 Storage unit 108 Bypass path 109 Purification unit 110 Damper

Claims (4)

An intake port for sucking oily smoke or odor generated by cooking with a heating cooker, a sub-intake port opened in a direction different from the intake port , a main air passage communicating with the intake port, the sub-intake port, and the A sub air passage connected to a part of the main air passage, a damper for closing any one of the main air passage and the sub air passage, and a blowing means for circulating air through the main air passage and the sub air passage. And an exhaust port communicating with the main air passage and the sub air passage, wherein the main air passage is provided with oil smoke removing means, and the sub air passage is provided with deodorizing means. . An air inlet that sucks in oily smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air passage; A damper that closes one of the auxiliary air passages, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage, An oil smoke removal means and a heat detection means upstream of the oil smoke removal means are arranged in the main air passage, and a deodorization means is arranged in the auxiliary air passage, and an air temperature detected by the heat detection means is equal to or higher than a set temperature. The oil smoke purification device is characterized in that the damper closes the auxiliary air passage at the time of, and closes the main air passage when the temperature is lower than the set temperature . An air inlet that sucks in oily smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air passage; A damper that closes one of the auxiliary air passages, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage, The main air passage has an oil smoke removing means and a water vapor detecting means in the main air passage upstream of the oil smoke removing means, and a deodorizing means is arranged in the sub air passage, and the heat detecting means detects water vapor. An oil smoke purification device characterized in that when the damper closes the secondary air passage, the main air passage is closed when it is not detected . An air inlet that sucks in oily smoke and odor generated by cooking with a cooking device, a main air passage communicating with the air inlet, a sub air passage connected to a part of the main air passage, and the main air passage; A damper that closes one of the auxiliary air passages, a blower that distributes air to the main air passage and the auxiliary air passage, and an exhaust port that communicates with the main air passage and the auxiliary air passage, Oil smoke removing means is arranged in the main air passage, deodorizing means is arranged in the sub air passage, the volume of the room in which the oil smoke purification device is installed is V (m ³ ), and the suction air volume of the oil smoke purification device is Q ( m ³ / h), after the main air passage is closed, the oil smoke purification device is operated at 2 V / Q (h) or more .

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