JP2834694B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ductless smokeless cooker used for grilling grilled meat and grilled meat.

[0002]

2. Description of the Related Art In a conventional cooking device in which cooking gas such as oily fumes such as oil smoke and oil droplets generated during cooking is sucked and smoke is eliminated, as shown in FIG. The cooking gas containing oil smoke and the like is sucked from an intake port 102 provided on the outer periphery of (1), the oil is collected by a grease filter 103, and then exhausted to the outside of the room via a duct 104. Further, when there are a plurality of cookers, the duct 104 is generally connected and suction is performed by a single blower.

[0003] There are the following three causes of the fire of such a duct type cooking device.

(A) The water in the water tank 105 below the cooking unit 101 is depleted, and the air-fired state continues for a long time, and the burnt residue or oil remaining in the water tank 105 ignites, and the flame is sucked. The oil accumulated in the grease filter 103 and the duct 104 ignites.

(B) The upper portion of the cooking unit 101 is set in a bonfire state, the flame is sucked, and the oil accumulated in the grease filter 103 and the duct 104 ignites.

(C) Meat or the like with a fire falls into the inside of the cooker from a gap between the cooking unit 101 and the air inlet 102, and this becomes a kind of fire and ignites the oil accumulated in the grease filter 103 and the duct 104. .

[0007] In this way, when a fire occurs in the cooking device, the flame burns vigorously because oxygen is supplied from the air inlet 102, the smoke and the flame spread through the duct 104, and the other cooking devices spread. Could be.

Therefore, a fire extinguisher 106 and a duct shut-off device 107 are provided as a fire prevention measure against a fire in the duct. The fire extinguisher 106 senses the temperature of the air in the duct 104 to detect the occurrence of a fire in the duct 104, and extinguishes the fire by spraying a fire extinguishing agent. (A state in which heating is continued after the water in the water tank 105 provided below the cooking unit 101 has been exhausted) and abnormal overheating in the vicinity of the duct entrance 108 is detected, and the duct entrance 108 is closed by the damper 109. . In addition, the intake port 102 and the duct 1
The duct shut-off device 107 is connected to the exhaust port 111 of the suction passage 110 communicating with the duct 04 so as to protrude, and the protruding portion prevents the oil from entering the duct 104.
It becomes 2.

[0009]

However, the cooker provided with the above-mentioned fire prevention measures keeps heating even when the cooking device becomes empty or a fire occurs, and does not have a mechanism for stopping the heating. In addition, it is not designed to completely block the invasion of fire.

[0010] In view of the above, it is an object of the present invention to provide a cooking device that has more enhanced fire prevention measures than conventional cooking devices and has further enhanced safety.

[0011]

Means for Solving the Problems According to the present invention, there is provided a cooking unit for placing an object to be cooked, a heating unit for heating the object to be cooked via the cooking unit, and an outer periphery of the cooking unit. An intake port disposed along the air duct, a duct for discharging the cooking gas sucked from the intake port to the outside, a suction path communicating the intake port with the duct, and purifying the cooking gas disposed in the suction path. In a cooker provided with a smoke purification device, a fire extinguishing device that senses a fire in the duct to extinguish a fire, and a duct shutoff device that detects abnormal overheating of the duct and closes the duct, the temperature of the suction passage Temperature detector, alarm means for issuing an alarm when abnormal overheating of the suction path is detected, and stop means for stopping the operation of the heating unit when the abnormal overheating occurs.

The intake port is formed in a slit shape from an upper wall bent outward to a vertical wall of an intake plate provided upright along the outer periphery of the cooking section, and an opening length of the upper wall portion is equal to that of the vertical wall portion. It is larger than the opening length, and the lower end of the intake port is positioned higher than the uppermost position of the cooking unit, and a gap is provided between the intake plate and the hood for sucking outside air.
In addition, the suction passage is arranged further laterally under the heating section.
Connected to the duct, the smoke purification device has a pre-filter for preventing intrusion of combustibles, and an oil-smoke collecting unit disposed below the pre-filter for collecting oil smoke. An oil pan is arranged below, and below the oil smoke collecting section,
An oil droplet intrusion prevention plate for allowing the oil pan to drip onto the oil pan so as not to be sucked into the duct is attached to the duct.
It is provided to be inclined from the near side toward the center .

Here, the alarm means notifies abnormal overheating by a buzzer, a lamp or the like, and the stop means stops heating by stopping the supply of gas, electricity or the like to the heating unit. As a result, no further heating is performed from the time when abnormal overheating is detected, and a fire can be prevented beforehand. It does not spread even if a fire breaks out. In addition, it made it difficult to inhale combustibles from the intake port
Filter small amounts of combustibles that have passed through the air inlet.
By blocking, it is possible to prevent a fire from entering the inside of the cooker, eliminate the cause of the fire, and enhance the fire prevention effect with a simple structure.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a cooker according to the present invention, as shown in FIGS. 1 and 2, a cooking unit 2 such as a roast or a grill, on which an object to be cooked, such as raw meat or fresh vegetables, is placed. A heating unit 3 for heating the food to be cooked, an intake plate 4 provided upright along the outer periphery of the cooking unit 2, and a cooking gas containing oil and fat vapor generated when the food to be cooked is purified. The smoke purification device 5 is integrated into an appliance unit 6, and this appliance unit 6
Is detachably mounted in a cabinet 8 having a top plate 7 having a circular opening formed in the center.

A suction port 9 for sucking cooking gas generated from the cooking section 2 is formed in the suction plate 4, and a suction passage 11 which reaches the exhaust port 10 from the suction port 9 through the smoke purification device 5 in the appliance unit 6. Is formed, and a duct 12 for discharging the purified cooking gas to the outside is connected to the exhaust port 10. Further, a fire extinguisher 13 that senses a fire in the duct 12 and extinguishes the fire, and a duct 1 that detects abnormal overheating of the duct 12 and
2, a duct detector 14 for closing the duct 2, a temperature detector 15 for detecting the temperature of the suction passage 11, a warning means 16 for issuing an alarm when abnormal overheating of the suction passage 11 is detected,
Stopping means 1 for stopping the operation of the heating unit 3 when abnormal heating of
7 is provided.

The cooking unit 2 is mounted on an upper edge 22 of a water tank 21 detachably mounted on an inner box 20 in the appliance unit 6, and an opening 23 is formed in the center of the bottom of the water tank 21. The heating unit 3 is disposed at 23. The heating unit 3
Gas is supplied by operating a gas stopper knob 32 from a gas pipe comprising a gas burner 25, a heat permeable plate 26, and an air conditioner 30 and connected to a gas inlet 31. In FIG. 2, reference numeral 33 denotes a nozzle bracket connected to a gas pipe by a ring joint 34, and reference numeral 35 denotes an air conditioner 3
No. 0 mounting plate.

The intake plate 4 has a cylindrical shape whose upper portion is bent outward, is placed on the upper edge 22 of the inner box 20, and has a gap 36 surrounding the intake plate 4 above. The hood 37 is detachably attached to the appliance unit 6. By sucking external cool air from the gap 36 and the air inlet 9, scattering of oil smoke and oil droplets is prevented, and an air curtain function of cooling cooking gas is added.

As shown in FIG. 3A, a plurality of intake ports 9 are formed along the outer periphery of the intake plate 4 along the outer periphery at a predetermined interval from the upper wall 40 of the intake plate 4 to the vertical wall 41.
The opening length X of the portion is larger than the opening length Y of the standing wall 41, and the lower end of the intake port 9 is located at a position higher than the uppermost position of the cooking section 2. The conventional intake port 102 is the same as that shown in FIG.
As shown in (b), the opening length X 'of the upper wall 113 is substantially equal to the opening length Y' of the standing wall 114, and
The lower end of 2 was lower than the uppermost position of the cooking unit 101 and had substantially the same height as the periphery. Therefore, the intake port 9 of the present invention has a structure in which meat pieces, dust, and the like are less likely to be sucked in than the conventional one.

The suction passage 11 is a passage extending from a space between the outer wall of the instrument unit 6 and the inner box 20 to a position below the inner box 20 and to an exhaust port 10 formed on a side surface of the instrument unit 6. The duct 12 penetrates the bottom surface of the cabinet 8 from the exhaust port 10 of the suction passage 11, is guided to the outside through the floor, and has a motor-directed exhaust fan. The duct 12 may be merged with a duct of another cooker via a chamber.

The smoke purifying device 5 is disposed below the inner box 20 in the appliance unit 6 and is provided with a grease filter 44 which is an oil smoke collecting section for collecting oil smoke, and is arranged upstream of the grease filter 44. And a pre-filter 45 for preventing inflammable combustibles such as chopstick bags and cooked food pieces around the cooker from entering. An oil pan 47 is mounted on the bottom of the appliance unit 6 below the grease filter 44. The pre-filter 45 is formed of two stainless steel punching plates so that relatively large dust (combustibles such as meat pieces) does not pass through. And each filter 4
The reference numerals 4 and 45 are mounted on the protruding portions provided on the inner surface of the tool unit 6, and can be taken out of the tool unit 6 and cleaned and replaced. In the drawing, 48 denotes an oil pan 47 by the suction force of the oil droplets directly-connected exhauster from leading the oil droplets in the central portion of the grease filter 4 4 so as not to penetrate into the duct 12 to be dropped from the grease filter 4 4 This is an oil droplet intrusion prevention plate to be dropped on the plate. By the way, the smoke purification device 5 is not limited to the above, and may use an electric dust collector.

The fire extinguisher 13 is the same as the conventional one.
A gastrointestinal 51 that injects a fire extinguisher from an injection port 50 in the duct 12 and a gastrointestinal 51 when a fire in the duct 12 is detected.
And a sensor 52 of a heat-sensing metal (heat-soluble metal) type for operating the sensor. The duct cutoff device 14 is the same as the conventional one, and is arranged at the entrance of the duct 12.

As shown in FIG. 4, the temperature detector 15 is a contact type temperature sensor mounted on the outer surface of the lower part of the instrument unit 6 and is fixed to a support 56, and the support 56 is attached to the instrument unit 6 by bolts 57. Have been. The temperature detector 15 is configured to measure the temperature of the cooking gas in the suction path 11 indirectly by bringing the sensor surface 58 into contact with the surface of the appliance unit 6.

The alarm means 16 is an alarm 60 which sounds in response to an output signal of the temperature detector 15.
1 connected. The stopping means 17 includes an electromagnetic valve 62 that opens and closes a gas flow path interposed between the gas inlet 31 and the gas burner 25, and the control circuit 61 issues an alarm according to an output from the temperature detector 15. The container 60 and the solenoid valve 62 are driven.

In the above configuration, when the gas is supplied to the gas burner 25 and burned, the raw meat and vegetables are placed on the cooking section 2 and cooking is started. Combustibles such as meat pieces are generated. Then, the cooking gas above the cooking unit 2 is sucked from the intake port 9 together with the surrounding air by the suction force from the duct 12.
Further, the combustion gas generated in the heating unit 3 also enters the suction passage 11.

At this time, the intake port 9 is at a certain height from the cooking section 2, and combustible materials such as ignited chopstick bags and burnt meat are not sucked into the intake port 9. Further, even when a piece of meat or the like is picked up and dropped on the intake plate 4, combustibles having a size that does not pass through the intake port 9 are not sucked into the intake port 9.

Further, the cooking gas and the combustion gas sucked into the suction port 9 and the small combustibles passing through the suction port 9 reach the pre-filter 45 through the suction passage 11. At this time, combustibles are blocked by the pre-filter 45, and only the cooking gas and the combustion gas pass through the pre-filter 45.

Subsequently, the cooking gas and the combustion gas that have passed through the pre-filter 45 pass through the grease filter 44, where the fats and oils are collected, and only the purified air passes through and enters the duct 12. As the cooking is continued, the oils and fats collected by the grease filter 44 drop and accumulate in the oil pan 47, and do not flow into the duct 12 due to an oil stopper or the like.

By the way, when the water in the water tank 21 evaporates and becomes in an empty firing state, the temperature of the combustion gas rises and the inside of the suction passage 11 becomes high temperature. Then, when the temperature reaches an abnormal temperature, the temperature detector 15 detects this, the alarm 60 sounds, the solenoid valve 62 is closed, the gas supply is stopped, and the gas burner 25 is stopped.
Extinguishes fire.

As described above, the intake port 9 is provided at the upper end of the intake plate 4 erected along the outer periphery of the cooking unit 2, and the pre-filter 45 is further provided upstream of the grease filter 44, whereby the grease filter 44 is provided. Since the combustible material does not enter the oil collecting portion of the duct 12 or the like, it is possible to prevent the combustible material from being used as a fire and the accumulated oil to ignite and cause a fire.

Further, there are provided a temperature detector 15 for detecting the temperature of the suction passage 11, an alarm 60 for issuing an alarm when abnormal overheating is detected, and a stopping means 15 for stopping the operation of the heating section 3 when abnormal heating is performed. Therefore, even if the inside of the suction passage 11 reaches an abnormal temperature, the alarm 60 sounds to warn the surrounding people and the operation of the heating unit 3 is stopped. It can be prevented from occurring, and even if a fire should occur, it can be extinguished immediately. Therefore, the cooking device has a better fire prevention measure than the conventional cooking device, and a cooking device with improved safety can be realized.

Note that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention. For example, instead of the alarm 60, a warning light that lights when the temperature detector 15 detects abnormal overheating in the suction path 11 may be provided. Alternatively, when an electric heater is provided in place of the gas burner 25 in the heating unit 3, the stopping unit 17 may stop supplying power to the electric heater when detecting abnormal overheating in the suction passage 11.

[0032]

As is clear from the above description, according to the present invention, when the temperature inside the suction passage reaches an abnormal temperature, a warning is given to a surrounding person and the operation of the heating unit is stopped. It is possible to prevent oil from igniting and causing a fire, and even if a fire should occur, it can respond promptly with an alarm and extinguish the fire immediately. In addition, with the intake plate
Suction external cold air from the gap with the hood and the air intake
Thereby, the cooking gas can be cooled.

[0033] Then, it is possible to prevent the combustible material from entering the suction passage or duct accumulating the oil, or combustibles are combusted combustibles become spark, the oil in the cooker is ignited Fire can be prevented from occurring. In addition, it is possible to remove most of the fat of cooking gas that occurred, moreover drop
Prevent the falling oil from entering the duct by the suction force
So that there is no contamination of the duct.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a cooking device according to the present invention.

FIG. 2 is a sectional view of the upper part of the instrument unit.

3A is a sectional view of an intake plate of the present invention, and FIG. 3B is a sectional view of a conventional intake plate.

FIG. 4 is a diagram showing a mounting state of a temperature detector.

FIG. 5 is a configuration diagram of a conventional cooking device.

[Explanation of symbols]

 Reference Signs List 4 intake plate 9 intake port 15 temperature detector 16 alarm means 17 stop means 44 grease filter 45 pre-filter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-119715 (JP, A) JP-A-61-234823 (JP, A) Full-scale operation Sho-61-169311 (JP, U) Real-time operation Sho-63- 64320 (JP, U) Actual opening 60-60730 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47J 31/00-31/60 A47J 37/00-37/12

Claims (2)

(57) [Claims] 1. A cooking unit for placing an object to be cooked, a heating unit to heat the object to be cooked through the cooking unit, and an intake plate having an air inlet arranged along the outer periphery of the cooking unit. A hood surrounding the upper portion of the intake plate, a duct for discharging the cooking gas sucked from the suction port to the outside, a suction path communicating the suction port with the duct, and a cooking gas arranged in the suction path. In a cooker provided with a smoke purification device for purifying, the intake port is provided outside the intake plate so that combustible materials do not enter.
A slit is formed from the upper wall bent in the direction to the upright wall, the opening length of the upper wall portion is larger than the opening length of the upright wall portion, and the lower end of the intake port is higher than the uppermost position of the cooking section. A cooking device, wherein a gap is provided between the suction plate and the hood for sucking outside air. 2. The suction passage further passes below the heating section.
The smoke purification device is connected to a duct disposed on a side and has a pre-filter for preventing intrusion of combustibles, and an oil-smoke collecting unit arranged below the pre-filter for collecting oil smoke. an oil pan is arranged below the collecting unit, wherein under the fume collecting portion, the oil drops intrusion prevention plate for dropped into the oil pan so as not to be sucked oil droplets dripping into the duct the
The cooking device according to claim 1, wherein the cooking device is provided to be inclined from a side close to the duct toward a center .