JPH0694941B2 - Flue gas purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a gas range used in a kitchen or the like,
The present invention relates to a device for purifying oily smoke generated during cooking.

2. Description of the Related Art A flue gas purifying apparatus B that purifies oil fumes and the like generated during cooking from a gas stove used in a kitchen or the like has a burner unit 2 of a gas stove 1 at one end as shown in FIG. A smoke exhaust duct 6 having a discharge port 5 that is opened to the side of the suction port 3 and has the other end penetrating the wall surface 4 of the house and exposed to the outside is installed at this discharge port 5. A blower 7 is provided and configured. Further, a removable grease filter 8 is provided in the smoke exhaust duct 6 near the suction port 3 in order to attach and separate the oil contained in the oil smoke. The solid arrows indicate the flow of air.

When the blower 7 is driven with the above configuration, the suction port 3 through the discharge port 5
Is generated, and oil smoke and the like generated together with the air flow sucked from the suction port 3 are sucked into the smoke exhaust duct 6. On the other hand, the oil contained in the oil smoke adheres to the grease filter 8 provided in the vicinity of the suction port 3 and is separated, and then the purified air is discharged from the discharge port 5 to the outside. The oil attached to the grease filter 8 is used to remove the grease filter 8 from the smoke exhaust duct 6 and wash it with a detergent or the like.

However, in the above-described configuration, when strong wind is applied to the discharge port 5, there is a problem that backflow occurs from the discharge port 5 to the suction port 3 and it becomes impossible to capture oil smoke and the like. It was

The present invention is to solve such a conventional problem, effectively control the blowing capacity of the blower according to the strength of the external wind to effectively capture oil smoke in the kitchen, etc., after purification, It is intended to be discharged.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has one end as an inlet having a reservoir for temporarily storing oil and odor, and the other end which penetrates a wall surface of a house and is outdoors. A purifying section for purifying oil and odors, which has a smoke exhaust duct serving as an exhaust port provided with an external wind detecting means for detecting the strength of the external wind and an exhaust blower which operates during cooking. An auxiliary blower that operates during purification is built-in, a downstream side of the purification section faces the discharge port, and a bypass path that faces the upstream side of the storage section is provided along with the discharge blower and A control means for controlling both the blowers according to the stop of the operation of the auxiliary blower and the output of the outside wind detecting means is provided.

Action The present invention detects the wind pressure when the outside wind or the like is applied to the discharge port by the configuration described above and controls the blowing performance of the discharge blower or the auxiliary blower. When the pressure in the duct rises, the auxiliary blower is controlled so as to operate with a large capacity so that an air flow that always flows to the outside of the discharge port is formed and the purified air flow is discharged.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 are cross-sectional views showing an embodiment of the present invention. FIG. 1 shows a configuration during a collecting operation of oily smoke and the like, and FIG. 2 shows a configuration during a cleaning operation. . Also,
FIG. 3 is a block diagram relating to the control of this device.

As shown in FIGS. 1 and 2, the flue gas purifying apparatus A of the present invention has one end opened to the side of the burner portion 12 of the range 11 to form an intake port 13, and the other end penetrating the wall surface 14 of the house. And a storage unit 18 for temporarily storing oil and odor in a smoke exhaust duct 17 that serves as an exhaust port 16 in which an exhaust blower 15 that is operated during cooking is arranged, and a purification unit that purifies the oil. The purification unit 19 is provided in the bypass passage 20 with the upstream side facing the storage section 18 and the downstream side facing the discharge port 16. The storage section 18 is configured by arranging an adsorbent 21 in which activated carbon is formed into a honeycomb shape, and a heater 22 for heating the adsorbent 21 near the upstream side thereof. On the other hand, the purifying unit 19 is a honeycomb-shaped catalyst 23, and is disposed on the upstream side thereof, and the reheating heater 24 that reheats the air flow introduced into the purifying unit 19 and the downstream side of the catalyst 23. It is arranged and configured with an auxiliary blower 25 that operates during purification.
Further, the outside air detecting means 26 for detecting the strength of the outside air using a pressure sensor is provided in the smoke exhaust duct 17 near the exhaust air blower 15, and the output air blower 15 or the auxiliary air blower is utilized by using this output signal. A control means 27 is provided for controlling the blowing performance of the blower 25 and switching the operations of the discharge blower 15 and the auxiliary blower 25 in accordance with cooking and cleaning. That is, in the control of the present embodiment, the pressure in the smoke exhaust duct 17 when the external wind is not applied in advance is detected by the external air detection means 26 and stored in the control unit 27, and the exhaust gas when the external air is applied is detected. The increase in the pressure in the smoke duct 17 is detected again by the external wind detecting means 26, and the discharge blower 15 or the auxiliary blower 25 is controlled so that the difference between the detected amounts is eliminated. On the other hand, at the inlet of the bypass 20 is provided a damper 29 for selectively closing either the inlet of the bypass 20 or the passage 28 on the smoke exhaust duct side, and at the same time, the amount of air blown by the auxiliary blower 25 is the blower 15 for discharge. The air flow rate is set to be considerably smaller than the air flow rate. Further, a combustion confirmation means 30 for confirming the ignition state of the flame is provided in the vicinity of the burner section 12, and the output signal is used to open and close the damper 29 and operate the exhaust blower 15 and the auxiliary blower 25 by the control section. It is controlled by 27. Here, the combustion confirmation means 30 also serves as an extinguishing safety device using a temperature sensor such as a thermocouple. In addition,
Reference numeral 31 is a hood provided above the range 11 in order to effectively collect oily smoke and the like generated in the range 11, and solid arrows indicate the flow of air.

Next, an operation during cooking for collecting oily smoke will be described. In this operation, as shown in FIG. 1, when the burner section 12 is ignited by a flame, the control 27 receives the output signal from the combustion confirmation device 30 and first operates the damper 29 to operate the bypass path.
The ventilation passage is configured such that the inlet 20 is closed and the smoke exhaust duct side passage 28 is opened. After that, when the discharge blower 15 is driven and the auxiliary blower 25 is stopped, the suction port 13 through the discharge port 16
The flow of air leading to the
This air flow is sucked into the smoke exhaust duct 17. On the other hand, when the outside air is applied to the exhaust blower 15, the pressure inside the smoke exhaust duct 17 increases according to the strength of the outside air, and the air blow ability of the exhaust blower 15 decreases. However, the control unit 27 controls the capacity of the discharge blower 15 so as to return to the pressure before the external wind is applied by the output signal from the external wind detection means 26, and always maintains the blowing performance that overcomes the influence of the external wind. To control it. Here, when the oil components and odors sucked into the smoke exhaust duct 17 pass through the reservoir 18 provided inside the suction port 13, they are simultaneously attached to and separated from the surface of the adsorbent 21 constituting the reservoir 18. The odor is also adsorbed and removed by the adsorbent 21. During this operation, heating heater 22 and reheating heater
The power supply to 24 is also controlled to stop.

Next, the operation of cleaning after cooking will be described. As shown in FIG. 2, when the flame of the burner unit 12 is extinguished, this operation receives the output signal from the combustion confirmation device 28 and receives the control unit 27.
However, first, the damper 29 is operated to open the inlet of the bypass 20 and the ventilation duct side passage 28 is closed. After that, the auxiliary blower 25 is driven and the discharge blower 15
At the same time, the adsorbent 21 is heated by the heater 22 that constitutes the storage section 18 to release the components adhering to or adsorbed on the adsorbent 21, and the catalyst is introduced into the purifying section 19 with a small air volume. After passing through 23, the air is discharged from the outlet 16 as purified air. On the other hand, when outside air is applied to the discharge blower 15 during this operation, the same operation as during cooking is performed. That is, when the outside air is applied to the exhaust blower 15, the pressure inside the smoke exhaust duct 17 rises according to the strength of the outside air, and the air blow capacity of the exhaust blower 15 decreases. However, the control unit 27 is controlled by the output signal from the outside wind detecting means 26.
However, the capacity of the exhaust blower 15 is controlled so as to return to the pressure before the outside air is applied, and the air blowing performance that always overcomes the influence of the outside air is maintained. here,
During the main operation, the reheating heater 24 provided in the purifying unit 19 operates only when the temperature of the airflow flowing into the bypass passage 20 is low.
The current is supplied until the operating temperature at which the catalyst 23 is effectively operated is reached. In addition, the control unit 27 is provided with a timer function, and after the flame of the burner unit 12 is extinguished, the burner unit 12 is programmed to operate for a certain period of time and then the operation of the apparatus is stopped.

Although the present embodiment has been described by using the pressure sensor as the outside wind detecting means 26, it goes without saying that the same effect can be obtained by using, for example, a flow velocity sensor or a flow rate sensor, and their installation locations are also set. For example, the same effect can be obtained by installing it on the outer surface of the house wall surface 14.

EFFECTS OF THE INVENTION As described above, the smoke exhaust device of the present invention automatically controls the blowing performance of the exhaust blower according to the strength of the outside wind, and always controls the performance of the blower to the performance of overcoming the outside wind. Therefore, it is possible to effectively capture and purify oil smoke and the like in the kitchen without being affected by the outside wind.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a flue gas purifying apparatus showing an embodiment of the present invention during an operation for collecting oily smoke, FIG. 2 is a cross-sectional view of the apparatus during purifying operation, and FIG. 3 is a control of the apparatus. A block diagram and FIG. 4 are sectional views of a conventional example. A: Smoke emission control device, 13 ... Intake port, 14 ... Wall surface, 15 ...
… Exhaust blower, 16 …… Exhaust port, 17 …… Smoke exhaust duct, 18
…… Storing section, 19 …… Purification section, 20 …… Bypass path, 25 ……
Auxiliary blower, 26 ... Outdoor wind detection means, 27 ... Control section.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location F24F 7/007 B 7539-3L

Claims (1)

[Claims] 1. One end is a suction port in which a storage part for temporarily storing oil and odor is arranged, and the other end is penetrated through a wall surface of a house to be exposed to the outside and the strength of outside wind is detected. It has a smoke exhaust duct as an exhaust port provided with an external air detection means and an exhaust blower that operates during cooking, and has a built-in purification unit that purifies oil and odors and an auxiliary blower that operates during purification, and A downstream side of the purifying unit faces the discharge port, and an upstream side faces the downstream side of the storage unit, and a bypass path is provided along with the operation of the discharge blower and the auxiliary blower, and the outside air detecting means. A flue gas purification device provided with control means for controlling both blowers according to the output.