JP2001248871A - Roaster exhaust gas updraft purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the adsorption capacity of fine particles of fat and oil lowers due to partial lowering of adsorption capacity. SOLUTION: A fat and oil adsorbing body 40 is divided into two by arranging a transverse plate 80 vertically so that fat and oil having inertia separate from exhaust gas and adhere to the transverse plate 80. Rough particles of fat and oil are adsorbed to a lower fat and oil adsorbing body and then residual fine particles of fat and oil are adsorbed to an upper fat and oil adsorbing body thus cleaning exhaust gas before being discharged outdoors from a ceiling duct.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for suctioning exhaust gas (combustion gas containing smoke, oil particles, mist, etc.) generated during heating and cooking with a roaster, purifying (primary and secondary) exhaust gas, and then purifying the ceiling. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-drawing type roaster for exhausting air outdoors through an installation duct, and more particularly to an up-drawing purifier for roaster exhaust gas which improves maintainability of an exhaust gas purifying device.

[0002]

2. Description of the Related Art Conventionally, as a method of sucking exhaust gas from a roaster, exhaust gas generated from a cooking section is sucked into a table and then purified or exhausted outdoors, or the exhaust gas is sucked above the cooking section and the ceiling is removed. BACKGROUND ART There is known a device that exhausts outdoors through an installation duct.

[0003] Then, the exhaust gas is sucked into the roaster,
In the case of exhausting outdoors with a duct installed under the floor, oil particles and the like are collected in the roaster or before connection of the duct under the floor, and primary purification is performed to prevent a duct fire. On the other hand, even in the case of suctioning exhaust gas upward and exhausting it outdoors through a ceiling-mounted duct, at least a primary purification device (for example, a pre-cleaning device) is required to collect oil particles before connection to the ceiling duct in order to prevent duct fire. It is desirable to provide a (primary, secondary) purification device, but periodic cleaning is required because the purification capability of the purification device decreases due to oil particle recovery. However, since the suction and purification device installed above the roaster is mounted on the ceiling or suspended from the ceiling, maintenance work has been a difficult task due to work at a high place.

[0004] Further, the installation place of the purifying device is in the ceiling or between the ceiling and the suction unit arranged opposite to the roaster and the like. However, in such an installation place, there is a limitation in terms of space or maintenance, so that primary purification is possible. Even so, it has been difficult to develop an effective oil and fat recovery device for secondary purification. Further, if maintenance work is essential, it is also required to reduce the frequency of the work. Hereinafter, a conventional purification device will be described.

[0005] That is, as a conventional oil and fat recovery system, a vented dust collecting filter is used. In this system, exhaust gas is passed through a vented dust collecting filter to remove oil particles and the like. The collection, dust collection, and purification are performed, and oil particles accumulate on the filter, increasing the ventilation resistance of the filter and reducing the purification ability of the filter. Met.

Activated carbon is also used in the exhaust gas suction passage in addition to a vented dust-collecting filter. Activated carbon is porous and has a high adsorptivity, so it is used in the final treatment to adsorb and deodorize odor components of fine particles. However, since activated carbon is in the form of powder or fine granules, the pressure loss due to aeration originally tended to be high. And, when activated carbon is used for the primary treatment of exhaust gas containing oil fumes, by adsorbing oil particles of the oil fumes, the pores of the activated carbon may be clogged, or a large number of activated carbons may adhere to each other to block the ventilation gap, This has a drawback that the ventilation resistance and pressure loss are significantly increased, and adversely affect the exhaust gas suction action. Also, when heat is applied to activated carbon, the activated carbon tends to be activated to release the adsorbed substance, or activated carbon has a drawback in that the activated carbon is worn out and loses weight. Since it is high, condensed water easily accumulates in the activated carbon layer, and has the disadvantage of reducing the deodorizing and adsorbing action. Therefore, the primary treatment with activated carbon has not been performed.

Therefore, as shown in FIG. 11, the present applicant attaches a duct base b to an exhaust duct a provided in the back of a ceiling in a hanging manner, and a telescopic communication pipe c and a purifying device. The exhaust gas collecting body d having the built-in is sequentially connected and connected, while a wire is wound around a hoisting pulley of an elevating device e provided behind the ceiling, and the end of the wire is connected to the exhaust gas collecting body d. Developed a pull-up type suction device and achieved the intended purpose. Then, the exhaust gas recovery body d having the built-in purification device is, as shown in FIG.
An oil / fat recovery device which is disposed opposite to the upper part of the roaster f and is operated by suction, wherein a closing plate h having a smoke collecting hood g is detachably attached to a lower portion of a duct pipe k which is operated by suction. The oil adsorbent j having a hollow cylindrical shape is placed on the closing plate h. The oil adsorbent j is closed at the upper end, and the oil adsorbent j is arranged so as to have a passage m between itself and the duct pipe k. It is arranged in the duct pipe k, and forms a suction flow path in the order of the smoke collecting hood g, the passage flow path n in the central hollow portion of the oil adsorbent j, the passage flow path m on the outer peripheral side of the oil adsorbent, and the duct pipe k. It was done.

In the exhaust gas collecting body d, the ring-shaped oil adsorbent j is filled with the adsorbent p, and the oil and fat in the exhaust gas is adsorbed and collected when passing through the adsorbent p. As the exhaust gas channel in the exhaust gas collecting body d, the exhaust gas rising from the roaster f by the suction action from above passes through the ring-shaped adsorbent p from the central passage channel n in the horizontal direction, and It flows through the passage m between j and the duct pipe k, and the passage changes upward.

Therefore, since the suction force acting on the passages m and n tends to be relatively strong in the upper part, the amount of exhaust gas passing across the adsorbent p is large in the upper part. As a result, the amount of fat or oil adsorbed by the adsorbent p in the upper portion becomes large, and the adsorbing capacity of the portion gradually decreases. With continuous use, the adsorbing capacity of the fat / oil adsorbent j becomes non-uniform, while the fat / oil contained in the smoke contains a mixture of coarse particles to fine particles. Medium, most of the fats and oils in coarse particles are adsorbed, but the amount of fine particles adsorbed is reduced. Therefore, the adsorbent p
This has the drawback that the frequency of replacement of the oil increases and the exhaust gas mixed with the particulate oil or fat is exhausted outdoors due to continuous use.

[0010]

SUMMARY OF THE INVENTION The present invention is intended to prevent a decrease in the ability of a purifying apparatus for purifying exhaust gas, particularly when adsorbing roaster exhaust gas from above and exhausting the exhaust gas through a ceiling duct to the outside, in particular, and to reduce the ability to adsorb fine particles. Provided is a roaster exhaust gas purifying apparatus that reduces maintenance work.

[0011]

SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art, and in view of the problem of the ability to adsorb fine oils and fats due to a partial decrease in the adsorbability, the oil / fat adsorber whose height is limited is vertically moved. By dividing the oil into two parts, the lower adsorbent adsorbs coarse oil and fat, and the upper adsorbent adsorbs residual fine oil and fat, so that the exhaust gas is cleaned and exhausted outdoors from the ceiling duct. Resolve.

Further, in view of the problem of the mounting space and the maintenance work surface of the fat and oil adsorbent based on the above-mentioned prior art, the fat and oil adsorbent is mounted on a removable smoke collecting hood at the lower end of the hanging duct pipe. Thereby, the oil adsorbent is detachably mounted inside the hanging duct pipe. The oil adsorbent is formed in a ring shape so that it can be accommodated in a hanging duct, and has a purification capability and a passing amount of exhaust gas by cross-ventilating the entire circumferential surface in the vertical direction. The adsorbent is arranged in two upper and lower stages, so that coarse oils and fats are recovered in the first stage and residual fine particles and oils are recovered in the second stage. Also, a transverse plate is arranged in the middle of the upper and lower adsorbents, and immediately before the first-stage recovery by the adsorbent, the oil particles having inertia force are separated from the exhaust gas flow and collide with and adhere to the transverse plate. I am trying to collect it.

In view of the problem that the air purifying type filter requires regular cleaning and the problem that activated carbon as an adsorbent is unsuitable for the primary treatment, the oil or fat whose exhaust gas passes through the primary treatment side of the exhaust gas suction passage is used. The adsorbent is provided, and the fat adsorbent is formed in a three-dimensional shape with a large number of porous and uniform particle diameter adsorbents made of an inorganic material. By purifying the exhaust gas by infiltrating inside, prolonging the use period, and uniforming the particle size of the adsorbent, a gap between adjacent adsorbents is secured to suppress an increase in ventilation resistance. Thus, the above problem is solved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a roaster 1 installed on the floor and an exhaust gas suction / exhaust device 2 suspended from the ceiling are vertically arranged. Although the suction / exhaust device 2 is described as having a fixed position in the vertical direction, it may be configured to be vertically movable as shown in the conventional example.

In the roaster 1, the cooking unit 5 is opened substantially at the center of the table 4 supported by the cabinet 3, and the outer box 7 is fitted and supported on the table 4 around the cooking unit 5. The inner box 9 is mounted inside the outer box 7. The outer box 7 and the inner box 9 are both circular in shape.
Is fixed to the table 4 via a flange. In addition, by connecting a pair of connecting cylinders penetrating through the outer box 7 and one side of the inner box 9, a spontaneous air supply and an ignition for connection open to the outside of the outer box 7 and the inside of the inner box 9. The connecting portion 11 for mounting the burner 12 and the like is formed. In addition, a heating section 13 composed of seven wheels is arranged on a mounting section formed by inclining and bending the upper portion of the inner box 9 outward. Although the heating unit 13 has been described as a seven-wheel car equipped with natural charcoal, gas heating, ceramic charcoal or the like may be used. A drain pan 18 for storing water is placed on the inner bottom of the inner box 9, and a control device 19 is provided on the lower right surface of the table 4.

Next, a description will be given of a suction / exhaust device 2 having a built-in purifying device disposed above and facing the roaster 1.
As shown in FIGS. 1, 2, and 3, in the ceiling space above the ceiling plate 30, a duct base is connected via a connection box 33 having a fireproof damper to an exhaust duct 32 to be suctioned and supported by beams.
34, and an exhaust gas collecting body is provided below the duct base 34.
37 is detachably attached.

As shown in FIG. 8, the duct base 34 and the exhaust gas collecting body 37 are freely connectable by forming a fitting pin 48 of a screw shaft on the duct base 34 so as to protrude therefrom. An opening is formed in the J-shaped fitting portion 47, and a fitting pin is formed in the fitting portion 47.
The nut is attached to the fitting pin 48 in a state where the fitting of the exhaust gas collecting body 37 is performed. It can be easily done just by doing.

As shown in FIGS. 2 and 3, the exhaust gas recovery body 37 includes various duct pipes from the top to the bottom, that is,
The base pipe 38, the storage pipe 41 for storing the oil adsorbent 40 from the base pipe 38 via the enlarged diameter pipe 39, the attached pipe 42 at the lower end of the storage pipe 41, and a position slightly higher than the attached pipe 42. Outer smoke collecting hood 43 to which the base end is attached,
It is integrated in communication. A hollow cylindrical oil adsorbent 40 is provided inside the storage pipe 41 so as to have a passage channel 44 between the storage pipe 41 and the storage pipe 41 so that the exhaust gas can pass freely.
Is installed.

Next, the fat / oil adsorbent 40 with respect to the storage pipe 41
The detachable mounting structure and the fat / oil adsorbent 40 will be described. As shown in FIGS. 2, 3, 4, 5, and 8, the storage pipe 41 and the closed pipe 45 attached to the lower end of the attached pipe 42 are overlaid on the outer peripheral side of the attached pipe 42. The fitting cylinder 46 positioned at the position is attached, a fitting portion 47 having a substantially J-shaped opening is provided in the fitting cylinder 46, and a fitting pin 48 protruding to the outer peripheral side of the pipe 42 to be mounted is fitted into the fitting portion 47. ing. Also, the base end pipe of the inner smoke collecting hood 50 is inserted into the central opening 49 of the closing plate 45.
Attach the upper end of the base pipe 51 to the closing plate 45.
It projects slightly upward. Then, the ring-shaped oil adsorbent 40 is configured to be freely placed on the closing plate 45,
The protruding upper end of the base pipe 51 is positioned on the inner edge side of the base 40.

The details of the fat / oil adsorbent 40 are shown in FIG.
As shown in 5, 6, and 7, a breathable ring-shaped storage body 52 is provided.
, And a large number of adsorbents 53, 53a,.
The transverse plate 80 is arranged so as to divide the central space into upper and lower portions, thereby forming a ring-shaped lower fat / oil adsorber 81 and an upper fat / oil adsorber 82, respectively. In the present invention, the fat adsorbent 40
Is partially divided into upper and lower parts by the transverse plate 80,
The central hollow portion of the fat / oil adsorbent 40 may be made non-ventilable in the vertical direction, and a pair of upper and lower lower fat / oil adsorbers 81 and an upper fat / oil adsorber 82 may be stacked separately. The adsorbents 53, 53a,... Stored in the storage body 52 are made of ceramic (inorganic material).
And has a particle size of 1 mm or more. When the adsorbents 53, 53a, etc. include ones of 1 mm or less, the gap between the adsorbents 53, 53a, is small, the pressure loss is increased, and the practicality is reduced.

Then, as shown in FIGS.
Are provided with a plurality of ventilation holes 54, 54a, and a plurality of ventilation holes so as to have a storage space 56 inside the outer cylinder 55.
The inner cylindrical body 58 in which 57, 57a. The inner cylinder 58 includes a pair of upper and lower lower inner cylinders 83 and an upper inner cylinder 84 having the same shape, and a transverse plate 80 is arranged between the two.

Further, as shown in detail in the exploded views of FIGS. 9 and 10, a bottom plate 59 having substantially the same width as the storage space 56 is formed in a lower part of the outer cylinder 55 so as to protrude inward and an inner cylinder 58 is formed. A bottom plate 59a having substantially the same width as the storage space 56 is formed to protrude outward from the lower portion of the lower portion, and the bottom plate 59a of the lower inner cylinder 83 can be seated on the bottom plate 59 of the outer cylinder 55. Then, the blocking peripheral portion 85 of the transverse plate 80 is detachably mounted on the upper end of the lower inner cylindrical body 83, and the blocking peripheral portion 85 is
The bottom plate 59a of the upper inner cylinder 84 is seated on the upper surface 85.

As shown in FIGS. 4 to 7, the upper end of the outer cylinder 55 is formed higher than the upper end of the inner cylinder 58 (upper inner cylinder 84). A cap 61 with an inclined upper surface is detachably attached to the upper ends of the outer cylinder 55 and the upper inner cylinder 84 so as to cover the upper part. As shown in FIGS. 2 and 3, a bent portion is formed from the base end pipe 38 of the exhaust gas collecting body 37 downward.
A closing plate 87 is attached in a hanging manner via 86, and its lower end is inscribed in the inner end of the inner cylinder 58 (upper inner cylinder 84).

As shown in FIGS. 2, 4 and 9, the transverse plate 80 for blocking the central hollow portion of the lower fat / oil adsorbent 81 and the upper fat / oil adsorber 82 from being in a non-ventilable state has a central portion 88 having an inclined portion. 89
Projecting upward through the. Further, FIGS.
As shown in FIG. 7, a mounting rod 90 composed of a screw shaft is provided at a central portion 88 of the transverse plate 80, and a dish-shaped baffle plate 91 having a high periphery is mounted at the lower end thereof.

As shown in FIGS. 6 and 7, a semicircular handle 67 made of a wire is provided on the mounting portions 66 and 66a provided on the outer side of the upper end of the outer cylinder 55 so as to be rotatable upward and detachable. . As shown in FIGS. 2 and 3, the outer smoke collecting hood 43 and the inner smoke collecting hood 43 are provided.
In the height relationship of 50, the small-diameter inner smoke collecting hood 50 is formed slightly above, and an oil sump is formed at the inner peripheral lower end of the outer smoke collecting hood 43.
70 are provided.

Next, the operation of the apparatus for purifying roaster exhaust gas according to the present invention will be described. First, as a basic exhaust gas recovery operation, the exhaust gas rising from the cooking unit 5 of the roaster 1 is guided and sucked by the inner and outer smoke collecting hoods 43 and 50, and is passed through the exhaust gas collecting body 37, the exhaust duct 32 and the like. Exhaust purifying gas.

In the above-mentioned exhaust gas recovery operation, first, as a first step, the fat and oil particles in the suction-rising exhaust gas adhere to the lower surface of the transverse plate 80 or the baffle plate 91,
As the second and third stages, in the process in which the exhaust gas passes through the fat / oil adsorbent 40 (the lower fat / oil adsorber 81 and the upper fat / oil adsorber 82) in the flue gas collector 37, the adsorbents 53 and 53a
, And circulates in a complicated manner in the gap, and traverses twice in the outer circumferential direction and the inner circumferential direction.
It bends substantially upward at the outlet of the passage passage 60a of 82.

Therefore, most of the oil particles adhere to the transverse plate 80 or the like due to inertial force, or adhere to the adsorbents 53, 53a, etc. due to the turbulent flow when passing through the oil adsorbent 40, and the exhaust gas is purified, and the purified air is purified. From the exhaust duct 32 to the atmosphere. Since the fats and oils adhering to the adsorbents 53, 53a have some fluidity, they permeate into the porous adsorbents 53, 53a.

The details of the action of collecting fats and oils in the exhaust gas performed in the above three steps are as follows. First, after the exhaust gas sucked and raised along the inner smoke collecting hood 50 rises in the lower oil adsorbent 81, when the flow direction changes to the outer peripheral side, the oil particles having the rising inertia force move in the traveling direction. Separated and separated from the exhaust gas that changes while maintaining the flow path, and collides and adheres to the lower surface of the transverse plate 80 or the baffle plate 91. 2 and 4, since the central portion 88 of the transverse plate 80 is bulged upward, an updraft is likely to occur, and the amount of adhesion at the central portion 88 and the lower surface of the inclined portion 89 is reduced. Increase. In the case of the baffle plate 91 shown in FIGS. 3 and 5, there is an updraft at the outer edge of the baffle plate 91 and there is no updraft inside, so that a swirling vortex is generated inside and Oil particles fall and adhere to the upper surface of the plate 91.

Next, after ascending in the lower fat / oil adsorbent 81,
When the flow path changes to the outer peripheral side and crosses the adsorbents 53, 53a, the fat and oil particles in the exhaust gas adhere to and are collected by the adsorbents 53, 53a,. The exhaust gas that has risen in the passage 44 on the outer peripheral side of the fat / oil adsorbent 40 (the lower fat / oil adsorber 81 and the upper fat / oil adsorber 82) changes its flow path to the inner peripheral side again at the position of the upper fat / oil adsorber 82. Are collected at the stage of crossing the adsorbents 53, 53a. In the two-stage adhesion and recovery by the adsorbents 53, 53a, the fats and oils of coarse particles are collected by the lower fat and oil adsorbent 81, and the fats and oils of the fine particles passing through the lower fat and oil adsorbent 81 are removed in the next stage. It is collected by the upper fat adsorbent 82.

Although the description has been given of the case where the recovery method differs depending on the size of the oil particles, all of the description is not for such a recovery method but for the main one. That is, since the adsorbing force of the adsorbents 53, 53a, etc. immediately after the replacement is very large, the fine particles may be collected by the lower fat / oil adsorbent 81, or the fine particles may be collected by the lower fat / oil adsorbent 81 even during continuous use. It may be done. The main collection method described above is for continuous use, for the following reasons. In the initial stage of use, most of the oil particles are collected by the lower fat / oil adsorbent 81, and the adsorbents 53, 53 in the lower fat / oil adsorbent 81 are continuously used.
When the adsorbing ability of a is reduced, the fats and oils of the fine particles may flow into the upper fat and oil adsorber 82, and the fine particles that have passed through are adsorbed by the upper fat and oil adsorber 82. In addition, although mainly generated mainly in the lower fat / oil adsorbent 81, the adsorbents 53, 53a ...
Since the flow path of the exhaust gas related to the adsorption action is a place where the ventilation resistance is low or a short-circuit path, the adsorbents 53, 53a ...
Since the adsorption capacity decreases from the specific location, the ventilation resistance increases, and the exhaust gas flow path having the maximum flow rate moves slightly, so that the decrease in the adsorption capacity of the adsorbents 53, 53a,... Tends to be uniform. .

The adsorbents 53, 53a,.
Is replaced by slightly lifting up the closing plate 45 having the inner smoke collecting hood 50 in the exhaust gas collecting body 37, rotating it slightly, and then lowering it to fit the fitting pin 48 of the pipe 42 to be attached.
Then, the fitting portion 47 of the mounting cylinder 46 in the closing plate 45 is detached, and the inner smoke collecting hood 50 having the oil adsorbent 40, the closing plate 45, and the like are placed on the floor. Then, lift the handle 67 and remove the oil adsorbent
40 is taken out from the closing plate 45, the cap 61 is removed from the oil adsorbent 40, and the inner cylinder 58 (the upper inner cylinder) is removed from the outer cylinder 55.
84, the transverse plate 80, and the lower inner cylinder 83) are lifted to discharge the adsorbents 53, 53a,. afterwards,
The inner cylinder 58 is attached to the outer cylinder 55, and the vertical difference between them is used, or the outer cylinder 55 and the inner cylinder 58 are
, And the oil adsorbent 40 is filled with new adsorbents 53, 53a,. When the adsorbents 53, 53a,... Are replaced and the assembled oil / fat adsorbent 40 is set, the cap 61 having an inclined portion is brought into contact with the lower end of the closing plate 87, and is slidably moved and attached.

[0033]

In short, since the apparatus for purifying roaster exhaust gas of the present invention is connected to the exhaust duct 32 provided behind the ceiling and connected to the upper part of the roaster 1, it is an upward purifier. Exhaust gas is sucked by the exhaust gas collecting body 37 facing the roaster 1 and exhaust duct
Exhaust air can be exhausted outside through 32 to clean the air inside the store, and the suction exhaust gas can be collected by the purification device in the exhaust gas recovery unit 37 to collect oil and fat, and to prevent duct fires,
Outdoor exhaust gas can be purified.

A closing plate having a smoke collecting hood 50 (inside) below a duct pipe (storage pipe 41) to be suctioned.
Since the 45 is detachably mounted, exhaust gas generated by the roaster 1 can be guided and sucked by the inner smoke collecting hood 50 and efficiently exhausted. Since the mounting plate 40 is mounted, only by attaching and detaching the closing plate 45, the oil adsorbent 40
Can be attached and detached, maintenance work can be performed easily, and the oil adsorbent 40 on the closing plate 45 is
Therefore, a storage space for the fat / oil adsorbent 40 can be secured in the storage pipe 41.

Since the fat / oil adsorbent 40 is composed of a lower fat / oil adsorber 81 and an upper fat / oil adsorber 82 in which the central hollow portion is vertically non-permeable in two stages, first, the lower fat / oil adsorber 81 The adsorbents 53, 53a... Adsorb fats and oils, and then the upper fat adsorbent 82 adsorbs fats and oils, so that the adsorbing capacity of the lower fat adsorbent 81 in the preceding stage decreases due to continuous use. In addition, coarse oils and fats can be adsorbed by the first adsorbents 53, 53a, and fine oils can be adsorbed and recovered by the adsorbents 53, 53a of the upper oil adsorbent 82 in the second stage. Therefore,
Even after continuous use, exhaust gas can be cleaned and exhausted outdoors, or the frequency of replacement of the adsorbents 53, 53a can be reduced. Also, the oil adsorbent 40 is arranged in the duct pipe (storage pipe 41) so as to have a passage channel 44 between the duct pipe (storage pipe 41) and the (inside) smoke collecting hood.
50, passage passage 60 in the central hollow portion of lower fat adsorbent 81, passage passage on the outer peripheral side of lower fat adsorber 81 and upper fat adsorber 82
44, since the suction flow path is formed in the order of the passage channel 60a in the central hollow portion of the upper oil adsorbent 82 and the duct pipe (storage pipe 41), the oil flows into the oil adsorbent 40 from the lower inner smoke collecting hood 50. The exhaust gas flow path is a flow path that traverses the peripheral wall of the lower oil / fat adsorbent 81 and the upper oil / fat adsorber 82 twice, and can have a required length in the height direction in the storage pipe 41.
Even within, the ventilation area required for exhaust gas purification can be sufficiently ensured.

The lower fat adsorbent 81 and the upper fat adsorber 82
Since the crossing plate 80 is placed between the inside smoke collection hood
When the exhaust gas flowing upward from 50 into the central hollow portion of the fat / oil adsorbent 81 changes its flow direction in the horizontal direction, the oil / fat particles mixed in the exhaust gas have an inertial force, so that they move in the horizontal direction. With little change, it collides with and adheres to the lower surface of the transverse plate 80, so that the coarse particles can be recovered, and at this recovery stage, the suction action is not reduced.

Also, since the central portion 88 of the transverse plate 80 is bulged upward, a change in the flow path from rising to horizontal is in an upwardly curved state following the bulged portion, and the oil and fat particles are efficiently Can be adhered and collected. Also transverse plate
Since the mounting rod 90 is provided below the mounting rod 80 and the dish-shaped baffle plate 91 is mounted on the mounting rod 90, the exhaust gas flow path at the outer peripheral edge of the baffle plate 91 generates a vortex flow inside the upper surface of the baffle plate 91. Thus, the oil particles can be dropped and collected on the upper surface of the baffle plate 91.

Further, a mounting pipe 46 is formed upright on the outer periphery of the closing plate 45, and a duct pipe (storage pipe) to be suction-operated.
41) Since the mounting cylinder 46 is formed in a multi-layer state on the outer periphery of the mounting pipe 42 at the lower end, even if the closing plate 45 is detachable with respect to the mounting pipe 42 suctioned through the storage pipe 41,
Exhaust gas can be sucked by the inner smoke collecting hood 50 provided on the closing plate 45 while maintaining the airtightness at the joint.

Further, since the fitting pin 48 is formed to project from the pipe 42 to be attached and the substantially J-shaped fitting portion 47 is opened in the mounting cylinder 46, the work of attaching and detaching the closing plate 45 to and from the pipe 42 to be attached. Can be easily performed only by a slight vertical rotation of the mounting cylinder 46 in the closing plate 45.

The base pipe 51 of the (inside) smoke collecting hood 50 is also provided.
Is projected slightly above the closing plate 45, and the upward projecting portion is located on the inner peripheral side of the hollow cylindrical oil adsorbent 40, so that the oil and fat on the closing plate 45 and in the duct pipe (storage pipe 41) is formed. Since the position of the adsorbent 40 is regulated to a predetermined central position, the flow path of exhaust gas flowing into and out of the fat / oil adsorbent 40 can be made uniform, and efficient purification can be performed.

The adsorbent 53 contained in the fat / oil adsorbent 40,
53a… is composed of a number of porous adsorbents 53, 53a… made of an inorganic material and having a uniform particle size.
53, 53a: turbulent flow generated when passing through the laminating section.
Exhaust gas can be purified by colliding and adsorbing fats and oils on 3, 53a ... and the gap between adsorbents 53, 53a ... with uniform particle size is large and the ventilation resistance is small, so the exhaust gas can be sucked smoothly. Can be performed, and the adsorbed fats and oils
3, 53a... Do not block the ventilation gap and can perform a long-term purifying action. Further, the adsorbents 53, 53a.
Since is inorganic, it is possible to prevent exhaustion of the exhaust gas due to heat.

A lower inner cylindrical body 83 having a vent hole 57 has a storage space 56 between itself and the outer cylindrical body 55 having a vent hole 54.
Is detachably mounted, and the transverse plate 80 is placed on the lower inner cylinder 83.
Since the upper inner cylinder 84 having the ventilation hole 57 on the transverse plate 80 is detachably mounted so as to have a storage space 56 between the outer cylinder 55 and the outer cylinder 55, When replacing the materials 53, 53a, the cap 61 can be removed to easily perform the replacement operation, and the used adsorbents 53, 53 at the time of replacement can be used.
a… the discharge operation of the inner cylinder 58 (the lower inner cylinder 83 and the upper
84) and removal of the transverse plate 80. Also, a large number of adsorbents 53, 53a ...
. Can be easily exchanged from the upper side of the storage body 52 when the adsorbents 53, 53a,... Are exchanged, and the upper part of the upper storage space 56 can be exchanged. Is closed by the detachable cap 61, so that the exhaust gas can be prevented from flowing out of the storage space 56 in a short-circuit manner.

Also, since the outer cylinder 55 is formed higher than the upper inner cylinder 84, the oil adsorbent 40 is filled when the adsorbents 53, 53a are filled.
Of the oil adsorbent 40 can be easily filled from the inside, and the cap
Since the upper surface of 61 is an inclined surface, and a closing plate 87 for closing the passage 44 outside the fat / oil adsorbent 40 is arranged so as to be inscribed above the upper inner cylinder 84, the adsorbents 53 and 53a When the oil / fat adsorbent 40 is set on the exhaust gas collecting body 37 after the replacement of
Even if the position and situation inside the exhaust gas recovery body 37 cannot be confirmed,
The lower end of the closing plate 87 and the inclined surface of the cap 61 are in a guide relationship, so that the fat / oil adsorbent 40 can be easily set.

A large-diameter outer smoke collecting hood 43 is provided outside the (inner) smoke collecting hood 50, and the (inner) smoke collecting hood 50 is positioned slightly higher than the outer smoke collecting hood 43. Therefore, even if the exhaust gas rising from the roaster 1 is diffused to have a large area, the (inside) smoke collecting hood is sucked.
The outer smoke collecting hood 43 having a diameter larger than 50 has a very large practical effect, such as being able to be sucked and guided in the horizontal direction to reliably suck the exhaust gas.

[Brief description of the drawings]

FIG. 1 is a view showing the overall arrangement of an oil / fat recovery device for an upward pulling roaster according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of the purification device.

FIG. 3 is an enlarged sectional view of a main part of a purification device according to another embodiment.

FIG. 4 is an enlarged sectional view of a main part of an exhaust gas recovery body removed from a duct pipe.

FIG. 5 is an enlarged sectional view of a main part of an exhaust gas recovery body removed from a duct pipe of another embodiment.

FIG. 6 is an enlarged sectional view of the fat / oil adsorbent.

FIG. 7 is an enlarged sectional view of a fat adsorbent of another embodiment.

FIG. 8 is an enlarged front view showing a holding portion (a closing plate, a mounting cylinder, and the like) of the oil adsorbent.

FIG. 9 is an exploded cross-sectional view of the fat / oil adsorbent.

FIG. 10 is an exploded sectional view of a fat adsorbent of another embodiment.

FIG. 11 is an overall view for explaining a conventional technique.

FIG. 12 is an enlarged view of a main part of FIG. 11;

[Explanation of symbols]

 1 Roaster 32 Exhaust duct 37 Exhaust gas collector 40 Oil adsorbent 42 Pipe to be attached 43 Outside smoke collecting hood 45 Closure plate 46 Mounting cylinder 47 Fitting part 48 Fitting pin 51 Base pipe 53, 53a… Adsorbent 54, 54a… Ventilation hole 55 Outer cylinder 56 Storage space 57, 57a… Ventilation hole 60, 60a Passage channel 61 Cap 80 Transverse plate 81 Lower oil adsorber 82 Upper oil adsorber 83 Lower inner cylinder 84 Upper inner cylinder 87 Closing plate 88 Central part 90 Mounting rod 91 Baffle plate

Claims (11)

[Claims] 1. An upward purifying device, which is connected to an exhaust duct provided in the ceiling and is provided with an exhaust gas recovery body having a built-in purifying device facing an upper portion of a roaster, wherein the duct pipe is operated by suction. A detachable closing plate having a smoke collecting hood is attached to the lower part of the container, and a hollow tubular fat adsorbing body is placed on the closing plate. The upper and lower two-stage lower fat and oil adsorber and the upper fat and oil adsorber are formed, and the fat and oil adsorber is arranged in the duct pipe so as to have a passage between the duct pipe and the smoke collecting hood. A passage in the central hollow portion of the fat and oil adsorbent,
A suction passage in the order of the lower fat adsorbent and the upper fat adsorbent, the outer peripheral passage, the central hollow part of the upper fat adsorber, and the duct pipe. Purification device. 2. The apparatus for purifying roaster exhaust gas according to claim 1, wherein a transverse plate is arranged between the lower fat / oil adsorbent and the upper fat / oil adsorber. 3. The apparatus for purifying roaster exhaust gas according to claim 2, wherein a central portion of the transverse plate is bulged upward. 4. The apparatus for purifying roaster exhaust gas according to claim 3, wherein a mounting rod is provided below the transverse plate, and a dish-shaped baffle plate is mounted on the mounting rod. 5. The mounting cylinder is formed upright on the outer periphery of the closing plate, and the mounting cylinder is layered on the outer periphery of the pipe to be attached at the lower end of the duct pipe to be suctioned. 5. The apparatus for purifying roaster exhaust gas according to 2, 3, or 4. 6. The apparatus for purifying a roaster exhaust gas according to claim 5, wherein a fitting pin protrudes from the pipe to be mounted and a substantially J-shaped fitting part is formed in the mounting cylinder. . 7. The smoke collecting hood according to claim 1, wherein a base pipe of the smoke collecting hood projects slightly above the closing plate, and the upward projecting portion is located on the inner peripheral side of the hollow cylindrical oil adsorbent. 7. The apparatus for purifying roaster exhaust gas according to 1, 2, 3, 4, 5, or 6. 8. The adsorbent housed in the fat / oil adsorbent comprises a large number of porous adsorbents of inorganic material having a uniform particle size. 8. The apparatus for purifying roaster exhaust gas according to claim 6, 6 or 7. 9. A lower inner cylinder having a ventilation hole is detachably mounted so as to have a storage space between the outer cylinder having a ventilation hole and an outer cylinder having a ventilation hole, and a transverse plate is mounted on the lower inner cylinder. The upper inner cylinder with ventilation holes on the transverse plate is detachably mounted so that it is detachably mounted and has a storage space between the outer cylinder and a large number of suctions in both storage spaces 9. The roaster exhaust gas as claimed in claim 1, wherein the material is stored and an upper portion of the upper storage space is closed by a detachable cap. Purification device. 10. The outer cylinder body is formed higher than the upper inner cylinder body, the upper surface of the cap is formed as an inclined surface, and a closing plate for closing a passage passage outside the fat / oil adsorber is provided on the upper inner cylinder body. 10. The device according to claim 9, wherein the device is arranged so as to be inscribed upward.
An apparatus for purifying roaster exhaust gas according to the above. 11. A large diameter outer smoke collecting hood is provided outside the smoke collecting hood, and the smoke collecting hood is located slightly above the outer smoke collecting hood. The apparatus for purifying a roaster exhaust gas according to 2, 3, 4, 5, 6, 7, 8, 9 or 10.