JP2003090580A - Upward suction structure in roaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To release smoke produced owing to unevenness of pieces of meat placed in a roaster, an increase of an offset, and a partial increase and offset of a rising smoke stream of air conditioning air caused by external turbulence factors from an outside smoke collection hood (waste gas recovery section) to the outside (in a store). SOLUTION: An outside smoke collection hood 39 is mounted on the outside of a duct pipe having a downward suction hole so as to include a space 38 in the hood, and a plurality of divided walls 46, 46a... are provided vertically in the space 38 in the hood at an equal interval. Consequently, a smoke stream rising and entering the space 38 in the hood, and offset is arrested by the divided walls 46, 46a... in its horizontal flow, and is gradually sucked through suction holes 41, 41a.... Thus, the velocity and amount of the smoke stream flowing from the surroundings of the divided walls 46, 46a... to the side of a position B with a small amount of the smoke flow are reduced, and hence even if the smoke flows at the junction are prevented from flowing downward or are joined, the junction amount of the smoke is reduced, and the smoke stream is completely sucked until it reaches the position B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roaster in which exhaust gas (combustion exhaust gas including burning smoke, oil particles, mist, etc.) generated during heating and cooking by a roaster is sucked and exhausted outdoors by a ceiling-mounted duct. Regarding the suction structure.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Laid-Open No. 2000-25443 discloses an upper pulling type roaster that exhausts air outdoors from a ceiling-mounted duct.
As disclosed in Japanese Unexamined Patent Publication No. JP-A-2003-058, “A fat and oil recovery device that is arranged so as to face the upper part of a roaster and is suctioned, and a blocking plate having a smoke collecting hood is detachably attached to a lower portion of a duct pipe that is suctioned. At the same time, a hollow cylindrical oil and fat adsorbent is placed on the closing plate, the upper end of the oil and fat adsorbent is closed, and the oil and fat adsorbent is provided in the duct pipe so as to have a passage between the oil adsorbent and the duct pipe. Placed in the smoke collection hood,
An oil recovery device for an up-drawing roaster was developed in which a suction flow path was formed in the order of a flow passage in the central hollow portion of the fat and oil adsorbent, a flow passage on the outer peripheral side of the fat and oil adsorbent, and a duct pipe (Fig. 15). reference).

In the above, the floor-mounted roaster a
Due to the relationship between the table-embedded type, table-mounted type, etc. and the ceiling-mounted exhaust gas collector b, installation in both stores /
Since the center of the shaft comes off during construction and the center offset occurs, and the burning smoke rising from the roaster a diffuses, so the burning smoke etc. is directly sucked and collected only by the central smoke collecting hood c in the exhaust gas collecting body b. It is difficult to do so, and the burned smoke that has reached below the outer smoke collecting hood d is in the central smoke collecting hood c.
It was sucked into and collected the burning smoke.

[0004] However, due to grilling in the roaster a, the placement of meat on the roster (biased placement), the generation of burning smoke and the rise of combustion exhaust gas are not uniform, or the center of both the roaster a and the exhaust gas recovery body b. Offset amount increases, or the air flow in the store due to air conditioning (disturbance factor) affects the rising smoke airflow (mixed airflow of burning smoke and air in the store) When the rising smoke airflow is biased, uneven, or turbulent, the smoke airflow that deviates from the central smoke collection hood c and reaches the peripheral portion of the outer smoke collection hood d increases. Then, while the smoke air flow relatively increases at a specific portion (specific peripheral portion) of the outer smoke collection hood d, when the smoke air flow relatively decreases at a location opposite to the specific location, the outer smoke collection hood d is identified. A part of the relatively large amount of smoke airflow reaching the peripheral portion is sucked into the central smoke collecting hood c, while the non-sucking smoke airflow rises to the dome-shaped inner space e of the outer smoke collecting hood d.

The smoke airflow that has risen in the hood inner space e where the smoke collection hood c exists in the center and reaches the dome ceiling f is partly divided into two lateral (horizontal) directions and partly corrugated. As a whole, the flow direction of the smoke air flow in the hood inner space e is two horizontal directions (arc-shaped opposite directions) along the circular inner surface of the outer smoke-collecting hood d in a vertically undulating state. In the space e inside the hood, the smoke airflow that has a vertical arcuate and horizontal arc-shaped flow condition is
The smoke air streams merge and become a downward flow, and the outer peripheral lower end edge g of the outer smoke collecting hood d is located at a 180 ° rotational position in a specific peripheral portion, a position where the rising smoke air stream is in a small amount, or the lower end point of the up and down wave flow. Was spilled around to the outside of the lower side, deviated from the outside smoke collection hood d to the outside, and diffused and escaped into the store.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to an outer smoke collecting hood (exhaust gas) caused by uneven distribution of meat, increase in offset amount, partial increase in rising smoke airflow due to disturbance factors of conditioned air, deviation, etc. To solve the problem of leakage from the collection department) to the outside (inside the store).

[0007]

SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art, in which the smoke airflow rises unevenly in the outer smoke collecting hood,
In view of the problem that the non-sucking smoke air stream deviates from the outer smoke collecting hood by diverging / merging in the hood space or flowing in a wavy shape, outside the duct pipe having a downward suction hole,
By installing the outer smoke collection hood so that it has a space inside the hood, and by installing multiple baffles at equal intervals in the vertical direction of the space inside the hood, the smoke airflow that rises incline into the space inside the hood flows horizontally. Is blocked by the baffle and gradually sucked into the suction holes, the velocity and amount of the smoke airflow flowing from the periphery of the baffle to the small-volume side of the smoke airflow is reduced, preventing the merging downward flow and merging. Even if it does, the combined flow rate will be small, and the above problem will be solved by sucking all up to a small amount of smoke airflow.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In the specification of the present application, two examples will be described as examples of the present invention, and a preferable first example will be described with reference to FIGS. 1 to 11 from other factors (from the viewpoint of improving normal trapping efficiency in which generation and rise of smoke flow are substantially uniform). In the second embodiment (FIGS. 12 to 14), an example of application to the type described in the related art will be described.

In the first embodiment, as shown in FIG. 1, a roaster 1 installed on the floor and an exhaust device 2 for exhaust gas hanging from the ceiling are vertically opposed to each other. Then, as shown in FIG. 2, in the roaster 1, the cooking section 5 is opened at a substantially central position of the table 4 on which the cabinet 3 is mounted, and the table 4 around the cooking section 5 is opened.
An outer box 7 whose lower portion is communicated with the air supply unit 6 is fitted and supported, and a supply flow path 8 at a predetermined interval is provided inside the outer box 7.
The inner box 9 is attached so that it is provided between the inner box 9 and the inner box 9.

Both the outer box 7 and the inner box 9 are circular,
The outer peripheral upper part of the outer box 7 is fixed to the table 4 via a flange. In addition, by connecting a pair of opposing connecting cylinders that penetrate one side of the outer box 7 and the inner box 9, for natural air supply and ignition, etc., which are connected and opened to the outside of the outer box 7 and the inside of the inner box 9. To form a connecting portion 11. As shown in FIGS. 2 and 3, the upper portion of the inner box 9 is bent outward to form a placing portion 12, and a pot receiver 13 placed on the placing portion 12 is provided with a heating portion 14 composed of seven wheels. is doing. As the heating unit 14, the seven wheels in which natural charcoal is incorporated have been described, but gas heating, use of ceramic charcoal, or the like may of course be used.

Reference numeral 15 denotes an annular top ring, which is composed of inner and outer walls 16 and 17 which are erected upward from an upper opening of the supply passage 8 between the outer box 7 and the inner box 9, and A circular slit-shaped ejection hole 18 is provided at the upper end, and the inner and outer walls 16 and 17 are mounted on the mounting portion 12 of the inner box 9 and the upper end of the outer box 7.

As shown in FIG. 3, the details of the top ring 15 having the ejection holes 18 are as follows.
The height relationship between 19 and the table 4 is provided, and the circular inner and outer walls 16 and 17 forming the top ring 15 have a specific configuration. That is, the upper ends of the top ring 15 (the upper end positions of the inner and outer walls 16, 17 and the height position of the ejection holes 18) are formed higher than the inner mesh 19 and the outer table 4, and the inner wall 16 is made higher than the outer wall 17. , The outer wall 17 is inclined inwardly from the middle portion to form the ejection hole 18 as a narrow ring-shaped slit,
Further, at the upper end portions of the inner and outer walls 16 and 17, the space holders 20 and 20a are projected on the outer surface of the inner wall 16 so as to be in contact with the inner surface of the outer wall 17 and formed on the upper ends of the inner and outer walls 16 and 17. The width of the ejection hole 18 to be generated is made constant and maintained. The space holding bodies 20, 20a, ... Which equalize the ejection holes 18 in the shape of a circular slit are shown as projecting from the inner wall 16, but one of the inner and outer walls 16, 17 is in contact with the opposite surface of the other. I wish I had it.

As shown in FIG. 2, the inner bottom of the inner box 9 is
A burner 21 for ignition is stored, a drain pan 22 in which water is stored is placed, and a control device 23 is provided on the lower surface of the right end of the table 4.

The air supply unit 6 provided in the cabinet 3 is provided with a supply fan, the air supply unit 6 and the supply passage 8 in the outer box 7 are communicated with each other, and the room has passed through the cabinet 3 having an appropriate opening. The air is supplied by the action of a supply fan to the air supply unit 6, the supply flow path 8, and the ejection holes 18 of the top ring 15.
It is configured so as to squirt upward through the outer periphery of the cooking section 5 via.

Next, the exhaust device 2 arranged above the roaster 1 so as to face it will be described. As shown in FIG. 1, a duct base 30 is hung down via a connecting box in an exhaust duct which is disposed in the ceiling above the ceiling plate and is preferably sucked by a turbo fan capable of obtaining a high static pressure. ing. Then, the exhaust gas suction / recovery section 31 that is suctioned in the suction flow path is attached to the lower portion of the duct base 30.

As shown in FIG. 4, the exhaust gas suction / recovery section 31 adsorbs fats and oils from the upper side to the lower side through various pipes, that is, the base end pipe 32 and the base end pipe 32 through the diameter expansion pipe 33. The duct pipe 35 for accommodating the body 34 and the attached pipe 36 at the lower end of the duct pipe 35 are successively integrated in a communicating state.
Then, inside the duct pipe 35, a passage channel 37 is provided between the duct pipe 35, and a hollow cylindrical fat / oil adsorbent 34 is attached by closing downward so that exhaust gas can pass therethrough. .

Further, a third suction is provided to connect the outer smoke collecting hood 39 so as to have the hood internal space 38 outside the duct pipe 35 and to suck the upper air of the hood internal space 38 continuously from the expanded pipe 33. The holes 40, 40a ... Are opened at the upper part of the side surface of the duct pipe 35. The lower end of the outer smoke collecting hood 39 is hung below the duct pipe 35 to an intermediate position of the attached pipe 36, and second suction holes 41, 41a for sucking inflowing air (exhaust gas) into the lower center of the hood internal space 38. Is opened on the side surface of the attached pipe 36 at a position corresponding to the lower end of the outer smoke collecting hood 39. Preferably, the diameter of the lower portion of the attached pipe 36 is reduced, and the second suction hole 41 is formed in the tapered reduced diameter portion 42. , 41a ... are opened. Further, in order to provide the large diameter, large flow rate first suction hole 43 at the center of the lower end of the reduced diameter portion 42, the suction pipe 44 is attached to the center of the lower end of the reduced diameter portion 42 in a state of upward and downward projection, and the upward protruding position is the second position. The upper end is opened above the suction holes 41, 41a ... And the lower end opening of the suction pipe 44 is located below the lower end of the outer smoke collecting hood 39.

An exhaust device 2 is provided at a position facing the roaster 1 above.
In the state in which is installed, the first suction hole 43 is located directly above the center of the grill 19 of the roaster 1, the first suction hole 43 on the three-stage grill 19 and the second suction hole at the lower end of the outer smoke collecting hood 39. 41, 41a ...
The relationship between the suction amount and the suction force of the third suction holes 40, 40a at the upper end of the outer smoke collection hood 39 is that the first suction hole 43 is large (the other two
10 times), the second suction holes 41, 41a, ..., The third suction holes 40, 40
The numerical aperture and opening area are set so that a ... Is about the same.

Next, an oil and fat adsorbent for the duct pipe 35.
34 is a detachable mounting structure, and the fat and oil adsorbent 34 has a bottomed upper surface opening, and a large number of adsorbents are stored in a ventilated ring-shaped storage body. Adsorbent made of ceramic (inorganic material)
It is made of a porous material having a uniform particle size of 1 mm or more.

Next, the most characteristic structure of the present invention will be described. The exhaust device 2 that is disposed so as to face the upper part of the roaster 1 and that acts on the suction is provided with a downward first suction hole.
43, second suction holes 41, 41a ... And third suction holes 40, 40a
The outer smoke collecting hood 39 is attached to the outside of the duct pipe 35 having the ... so as to have the hood inner space 38 which is a suction space, and in the present invention, it is possible to cope with the occurrence of unevenness of the smoke air flow (exhaust gas mixed air flow). Therefore, as shown in FIGS. 4 to 14, a plurality of baffle plates 45, 45a ... Are provided at equal intervals in the vertical direction of the hood space 38 to limit the flow direction of the smoke airflow.

The baffles 45, 45a, ... form the radial dividing walls 46, 46a, ... in the hood inner space 38, and the outer smoke collecting hood.
The hood inner space 38 is divided into a plurality of division chambers 47, 47a by being fixed to the inner surface of 39 or other appropriate place, and the smoke airflow can be restrictedly flowed to the adjacent division chambers 47, 47a. Therefore, the distribution walls 48, 48a ... Are provided around the partition walls 46, 46a ... Or the partition walls 46, 46a. The division walls 46, 46a ...
Or the structure which sets the distribution spaces 48, 48a ... around the partition walls 46, 46a ... Is shown in FIGS. 4 to 14 of the first and second embodiments, and each setting method is the same as that of the first and second embodiments. It applies to both.

As a method of setting the distribution spaces 48, 48a ... Of various types, as shown in FIGS. 6 and 14, a plurality of distribution holes 49, 49a ... Are provided in the dividing walls 46, 46a. As shown in FIG. 14, the area of the dividing walls 46, 46a ... Is made smaller than the cross-sectional area of the space 38 in the hood, and the space around the dividing walls 46, 46a. However, these are set individually or in combination. Distribution spaces 48, 48a around the dividing walls 46, 46a.
5 and 12, in the case of FIGS. 5 and 12, vertical rectangular flow gaps 50, 50a are provided between the outer surface of the duct pipe 35 and the inner edges of the partition walls 46, 46a. In the case of FIG. 10, the outer smoke collecting hood is located at the top of the hood inner space 38.
A substantially triangular flow gap 51, 51a ... Is provided between the ceiling portion 39 and the lower end position of the partition walls 46, 46a ... Above the lower end position of the lower suction hole 60 in the case of FIG. The notch flow gap 52,
52a ...

The positions and sizes of the distribution spaces 48, 48a provided in the adjacent partition walls 46, 46a ... May be the same as long as the flow condition of the smoke air flow can be restricted or changed to a predetermined state.
In order to obtain a reliable action, the adjacent partition walls 46, 46a ...
It is desirable that the positions, sizes, etc. of the distribution spaces 48, 48a ... In the case of FIG. 11, the distribution spaces 48, 48a
.. are set as the upper and lower parts of the dividing walls 46, 46a .. The flow gaps 51, 51a .. and the cutout flow gaps 52, 52a .. are mixed, and in the case of FIG. 14, the flow holes 49, 49a. …
And the distribution gaps 50, 50a ... between the duct pipe 35 and the dividing walls 46, 46a ... and the other distribution spaces 48, 48a .... (Distribution hole
49, 49a ..., distribution gap 51, 51a ..., notch distribution gap 52, 52
a ...) is also set.

In the figure, the dividing walls 46, 46a, which are baffles 45, 45a, are provided in the vertical direction.
45, 45a ... may be formed in a vertical direction inclined with respect to the vertical plane, or baffle plates 45, 45a ..., partition walls 46, 46a.
Shown with four sheets and four chambers, the set number and the number of chambers may be increased or decreased as appropriate. Further, the present invention can be applied to a case in which the suction hole is not provided in the upper portion or the side surface of the duct pipe 35 and the space 38 inside the hood does not serve as a suction space, which will be described as a second embodiment.

Next, the operation of the upward suction structure in the roaster according to the present invention will be described. First, the case where the rising smoke airflow is substantially equal will be described. As shown in FIG. 1, by forming an air curtain by the air flow of the jet air M from the jet holes 18 around the cooking section 5 of the roaster 1 and the exhaust gas rising from the grill 19 and the burning smoke. The exhaust gas and the like are raised upward by blocking both of them against the flow of indoor air. Then, the increased exhaust gas is guided and sucked by the exhaust gas suction / collection unit 31, and is exhausted via the exhaust duct or the like.

When the air curtain is generated, as shown in FIG. 3, since the top ring 15 is higher than the inner net 19 and the outer table 4, they are cut off from each other and are generated on the surface of the net 19. The hot air is prevented from flowing out to the surface of the table 4, and the surface flow from the surface of the table 4 to the cooking section 5 side due to the rise of the exhaust gas is cut off to smooth the rise of the exhaust gas. or,
Since the air curtain attracts the surrounding air, the inner wall 16 of the top ring 15 is made higher than the outer wall 17 so that the air attracting amount on the outer side (table 4 side) is large and the grill 19
The inside of the face side is a small amount.

Then, the top ring 15 having the ejection holes 18
Since the outer wall 17 of is inclined inward from the middle part,
The surface flow of the table 4 also inclines slightly inward along the inclined surface of the outer wall 17, and combined with the centralized suction action in the exhaust device 2, the jetted air M also flows upward slightly inward.
With this configuration, the air curtain is directed upward toward the center, and the diffusion of the curtain flow is suppressed.

As shown in FIG. 1, the exhaust gas, which is cut off from the air in the store by the air curtain and rises, is directed to the center in a focused state and rises, and most of the exhaust gas-containing flue gas that has reached below the exhaust gas suction and recovery section 31. Is sucked from the first suction hole 43 at the lower end of the center, and part of the smoke flow reaches the hood internal space 38 in the outer smoke collection hood 39 around the first suction hole 43. The smoke airflow flowing into the hood space 38, which receives a small amount of suction action, is sucked through the second suction holes 41, 41a ... Provided in the attached pipe 36 at the lower end position of the outer smoke collection hood 39, and further, The smoke airflow that has risen in the hood internal space 38 has the third suction holes 40, 40a provided in the duct pipe 35 that is the upper end position of the outer smoke collection hood 39.
Is sucked from.

Therefore, the exhaust gas generated in the cooking section 5 of the roaster 1 rises in a state of being substantially cut off from the in-store air by the air curtain ejected from the ejection holes 18 of the top ring 15, and
When rising, the central part tends to be focused, and the rising smoke airflow is mostly sucked by the first suction holes 43 having a large suction force, and the smoke airflow and the air curtain flow in the peripheral part flow into the hood space 38. , The second suction holes 41, 41a, and the third suction holes 40, 40a. Due to these actions, exhaust gas is intensively collected and the amount of air sucked in the store is reduced.

As shown in FIG. 4, the exhaust gas sucked into the exhaust device 2 as described above passes through the oil / fat adsorbent 34 in the exhaust gas suction / recovery section 31, and the adsorbent is adsorbed in the oil / fat adsorbent 34. Flows through the gap of the complex intricately, traverses in the inner circumferential direction,
It bends substantially upward at the outlet of the fat and oil adsorbent 34. Most of the oil particles adhere to the adsorbent due to the turbulent flow when passing through the fat and oil adsorbent 34, and the exhaust gas is purified and released as purified air from the exhaust duct to the atmosphere. Since the oil / fat oil adhering to the adsorbent has some fluidity, it penetrates into the porous adsorbent.

Next, the operation in the case where the rising smoke flow is concentrated on a specific portion will be described. Non-uniform placement of meat, increase in offset amount, partial increase in rising smoke airflow due to factors such as air-conditioning air disturbance, unevenness, etc. Even if these are suppressed by the air curtain, a specific area around the outer smoke collection hood 39 When the smoke airflow that reaches and reaches the portion (three arrow parts A in FIG. 5 to 9) increases, the space 38 inside the outer smoke collecting hood 39
The smoke airflow that has risen to reach the ceiling changes its flow direction in the horizontal direction (mainly in the two divided arcs) with a wavy state. And, the smoke airflow is the baffle plates 45, 45a ..., and the dividing wall 4
6 and 46a ... flow in the horizontal direction with a limited flow amount, or the horizontal flow accompanied by the wavy state is blocked, and the distribution spaces 48, 48a of the partition walls 46, 46a ... While passing through and moving through the division chambers 47, 47a, ..., the exhaust device 2 gradually sucks the mixture, and the combined flow after the diversion is reduced or blocked, and a small amount of smoke air flow B (one in FIGS. 5 to 9). (Inwardly curved arrow portion), almost the entire amount of smoke airflow in the hood inner space 38 is sucked (the detailed operation will be described later).

That is, as shown in FIGS. 5 to 9, a space 38 in the hood at a large amount of smoke airflow A of the outer smoke collecting hood 39 (one compartment 47 in FIG. 9 or two compartments in FIGS. 7 and 8). The smoke airflow that has reached and rises in the division chambers 47, 47a is prevented from rising at the ceiling of the outer smoke collection hood 39, and fills the division chambers 47, 47a.
The flow direction changes mainly in two horizontal directions in an arc shape (Fig. 7,
(Refer to the three arc parallel arrows 8 and 9). As shown in FIGS. 7 and 8, a part of the smoke air flow filled in the two division chambers 47 and 47a is
Second suction hole 4 provided on the top or side of duct pipe 35
1, 41a, ..., 3rd suction holes 40, 40a, ... (Refer to the two arc parallel arrows and one inward curved arrow in FIGS. 7 and 8), and the balance flows through the partition walls 46, 46b. Space 48, 48a
From… to the adjacent compartments 47b, 47c (Figs. 7, 8)
(See one arc-parallel arrow and one inward-curving arrow). In FIG. 7 etc., the arrival position of a large amount of smoke airflow is divided into two divisional chambers 47, 47a centering on the division wall 46, and a state in which no merging occurs at the 180 ° rotation position (small amount of smoke airflow B) is shown. However, as shown in FIG. 9, when the arrival position of a large amount of smoke airflow is one division chamber 47, the smoke airflow of the division chamber 47 has the second suction holes 41, 41a similarly to the above operation. While being sucked by ... etc., a small amount of smoke flow flows to the most downstream division chamber 47c, which is a suitable place B. Even if a smoke airflow merges in the division chamber 47c, the combined airflow rate is small and the rising smoke airflow from below is small, so the total amount of the combined smoke airflow is the second suction of the duct pipe 35. The holes 41, 41a ... And the third suction holes 40, 40a.

That is, a division chamber 47 into which a large amount of rising smoke air flows
Another intermediate division room 47a adjacent to (the reference numeral in FIG. 9),
Since 47b has different static pressures (comparative high pressure in the large-volume inflow section division chamber 47), the large-volume inflow section division chamber 47 to the adjacent division chambers 47a, 47
It flows into b, and this relationship gradually spreads to the downstream side. On the other hand, since the static pressure is different between the division chamber 47c into which a small amount of rising smoke air flows in and the other intermediate division chambers 47a and 47b adjacent to each other (the small inflow division chamber 47c has a comparatively low pressure), there is a small inflow division. Chamber 47c
Flows in from the adjacent intermediate divisions 47a and 47b, and this relationship gradually spreads to the upstream side. As a whole, the comparatively high pressure large amount inflow division chamber 47 sequentially flows into the comparative low pressure small inflow division chamber 47c via the intermediate division chambers 47a and 47b. Incidentally, in each of the division chambers 47, 47a ... Since the inflow and outflow are continued and the air is sucked, the static pressure difference gradually decreases.

In the operation of various setting methods of the distribution spaces 48, 48a ... Of the partition walls 46, 46a ... Which enable the chained inflow and outflow as described above, as shown in FIG. Between the outer surface of the wall and the inner edges of the partition walls 46, 46a ..
When setting up ..., a division chamber 47 into which a large amount of smoke air flowed,
47a ... Flows inward (in the distribution gaps 50, 50a ...) along the radial dividing walls 46, 46a.
Passing through 50a ... And flowing into the adjacent division chambers 47, 47a ... At that time, the flow in the horizontal arc direction is blocked by the division walls 46, 46a. As shown in FIGS. 6 and 10, when a plurality of flow holes 49, 49a ... Is provided in the partition walls 46, 46a.
When the flow gaps 51, 51a, ... Are provided between the ceiling part and the ceiling part, the vertical wavy state is prevented, while the flow in the horizontal arc direction is generated by the flow holes 49, 49a. Although it continues depending on the opening area, the smoke air flows from the high pressure region to the low pressure region through the circulation holes 49, 49a ..., The circulation gaps 51, 51a. The flow velocity in the horizontal direction decreases due to expansion at the time of inflow. FIG.
As shown in, the notch flow gap is
When 52, 52a ... are provided, the smoke air flow filled in the compartments 47, 47a ... easily flows into the adjacent room, but since the inflowing smoke air flow is hot and light, it easily rises in the adjacent room, resulting in a horizontal arc. Directional flow is reduced. Distribution space 4 (not shown)
When 8, 48a ... are provided on the outer end side of the dividing walls 46, 46a ..., when the smoke flow is largely biased, the flow into the adjacent room will be swift, and a large amount of smoke flow will be prevented from deviating from the inflow location. Can be blocked or tilted with respect to the vertical plane,
The baffles 45, 45a having a small area may be used to prevent the flow in the horizontal arc direction.

As described above, since there are various advantages due to the setting method of the distribution spaces 48, 48a ... Of the partition walls 46, 46a ..., The suction amount of the exhaust device 2, the location of the suction holes, the exhaust gas of the roaster 1 Depending on the amount of generation, etc., various types of division walls 46,
By setting the distribution spaces 48, 48a of 46a ... Independently or in combination, or by making the positions and sizes of the distribution spaces 48, 48a ..
Optimize horizontal flow and wavy flow conditions.

Next, the second embodiment will be described. The difference from the first embodiment is that the exhaust gas suction and recovery section 31 has only one suction hole in the center, the upper and lower closed positions of the fat and oil adsorbent 34, and the flow direction in the duct pipe 35 accommodating the fat and oil adsorbent 34. Etc. are different. That is, as shown in FIG. 12, the exhaust gas suction / collection unit 31 accommodates various oil pipes from the upper side to the lower side, that is, the base end pipe 32, and the fat and oil adsorbent 34 through the diameter expansion pipe 33 from the base end pipe 32. The duct pipe 35 and the attached pipe 36 at the lower end of the duct pipe 35 are successively integrated in a communicating state. Further, the base end of the outer smoke collecting hood 39 is attached to an intermediate position of the duct pipe 35, and a hood inner space 38 is formed between the duct pipe 35 and the outer smoke collecting hood 39. A hollow cylindrical fat and oil adsorbent 34 is attached by closing upward so that a smoke flow can be passed through by having a passage channel 37 between the fat and oil 35. And fat and oil adsorbent
An inner smoke collecting hood 61 that becomes a suction hole 60 in the lower central opening of 34
The base end is attached and the suction hole 60 is located above the lower end of the outer smoke collecting hood 39.

Next, the operation of the second embodiment will be described.
The operation of the second embodiment differs from the operation of the first embodiment in that the suction hole 60 is located only in the lower central portion in the second embodiment, and thus the smoke air suction state is slightly different. That is, a large amount of smoke airflow rises and flows into the specific division chambers 47, 47a, ..., and the baffles 45, 45a ..., The division walls 46, 46a. , 48a, and the like, flow into the adjacent chamber is the same as in the first embodiment, while the dividing chamber 4
The difference in the amount of smoke airflow flowing into 7, 47a ... is different. First
In the embodiment, the smoke airflow that has flowed into the division chambers 47, 47a ... Has second suction holes 41, 41 in the upper and lower portions of the hood internal space 38.
a ..., The third suction holes 40, 40a ... Are sucked to reduce the flow rate, but in the second embodiment, the chambers 47, 47a .. The flow rate is reduced.

Although the air curtain generator is provided on the side of the roaster 1 in the embodiment, of course, the present invention can be applied to those without an air curtain, and the conventional Japanese Patent Laid-Open No.
It can also be applied to the one in which the jet direction of the air curtain is directed to the outer hood, such as the one disclosed in 0-254430.

[0039]

In summary, the present invention is directed to the downward suction holes 43,
Since the outer smoke collecting hood 39 is attached to the outside of the duct pipe 35 having 60 to have the space 38 inside the hood, even if the exhaust gas generated from the roaster 1 and rising rises slightly from the central suction holes 43, 60, the outside. The smoke collecting hood 39 can be received and guided to suck and exhaust the smoke airflow mixed with the exhaust gas, and a plurality of baffle plates 45, 45a in the vertical direction of the space 38 inside the hood.
Since they are provided at equal intervals, the flow of smoke flowing upward into the hood space 38 is restricted in the horizontal arc direction flow and wavy state flow, and the conventional merging phenomenon is prevented, and the smoke flow is sucked into the store. It is possible to prevent deviation.

A suction hole 4 is provided on the side surface or the upper portion of the duct pipe 35.
0, 40a ..., 41, 41a ... are provided so that the hood internal space 38 serves as a suction space, so that the smoke air flow that has risen and flowed into the hood internal space 38 can normally be sucked and efficiently sucked, and Even when rising, the smoke airflow in the hood space 38 is sucked to reduce the flow amount in the horizontal arc direction, and the deviation prevention effect can be improved.

The baffles 45, 45a ... Are the partition walls 46 in the radial direction,
As a result, the horizontal flow is blocked and converted into a partial radial flow to guide it toward the suction hole side, or the filled smoke flow causes the partition chambers 47, 47a ... to become slightly higher in pressure. , Can be efficiently sucked, and the dividing wall 46, 46a ... or dividing wall 4
Since the distribution spaces 48, 48a ... are provided around 6, 46a ...
It is possible to prevent the smoke air flow filled in the division chambers 47, 47a ... From flowing out to the adjacent room, and prevent the deviation from the filled division chambers 47, 47a.

Distribution walls 49, 49a ... Are provided in the partition walls 46, 46a ... Or the partition walls 46, 46a ... Are made smaller in area than the cross-sectional area of the hood space 38. Since the surrounding space of 46a is made up of distribution spaces 48, 48a ,.
6, 46a ... can be easily configured.

Adjacent division walls 46, 46a ... Or division walls 46,
Since the positions of the circulation spaces 48, 48a, ... provided around the 46a, ... are different, it is possible to reliably prevent horizontal flow during a plurality of continuous movements between the division chambers 47, 47a ,.

Since the baffle plates 45, 45a are inclined vertically with respect to the vertical plane, the variation of the baffle plates 45, 45a is increased and the desired setting of the flow restriction state can be easily performed. In addition, since the oil and fat adsorbent 34 is installed in the duct pipe 35 that is sucked, the oil and fat components and the like can be collected and removed from the sucked smoke stream to clean the outdoor exhaust air through the duct. Is large.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a relationship between an upward pulling type exhaust device and a roaster according to the present invention.

FIG. 2 is a sectional view of a roaster.

FIG. 3 is an enlarged cross-sectional view of ejection holes in the roaster.

FIG. 4 is an enlarged cross-sectional view of an exhaust device when a smoke flow rises evenly.

FIG. 5 is an enlarged cross-sectional view of the exhaust device when the smoke flow rises unevenly.

FIG. 6 is an exhaust device in which a partition wall has a through hole.
It is an expanded sectional view which shows the flow condition when a smoke airflow rises | bias unevenly.

7 is a bottom view of FIG. 6 (a view taken along the line AA).

8 is a sectional view taken along line BB of FIG.

9 is a cross-sectional view taken along the line BB of FIG. 6 when the deviation position of the smoke air flow is one division chamber.

FIG. 10 is an enlarged cross-sectional view of a partition wall in which an upper portion of the partition wall is cut out to provide a flow hole.

FIG. 11 is an enlarged cross-sectional view in the case where the upper portion or the lower portion of the adjacent partition walls are cut out to provide the flow holes at different positions.

FIG. 12 is an enlarged cross-sectional view of an exhaust device showing a second embodiment.

FIG. 13 is an enlarged cross-sectional view of a second embodiment in which a lower portion of a partition wall is cut out to provide a flow hole.

FIG. 14 is an enlarged cross-sectional view in the case where a partition wall is provided with a flow hole in the second embodiment.

FIG. 15 is a diagram showing an overall arrangement of a fat and oil recovery device for a conventional upward pulling roaster.

[Explanation of symbols]

34 Fat adsorbent 35 duct pipe 38 Space inside the hood 39 Outside smoke collecting hood 40, 40a ... Third suction hole 41, 41a ... Second suction hole 43 First suction hole 45, 45a ... Baffle plate 46, 46a… Ward division wall 47, 47a… Ward division room 48, 48a… Distribution space 49, 49a… Distribution hole 50, 50a ... Distribution gap 51, 51a ... Distribution gap 52, 52a ... Notch distribution gap 60 suction hole

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Isamu Suzuki             Shinpo stock, 110 Wakabadai, Meito-ku, Nagoya             Inside the company F term (reference) 3L058 BH10 BJ03 BK02 BK04                 4B040 AA03 AB12 AC02 AD04 CA02                       CA16

Claims (8)

[Claims] 1. An exhaust device, which is arranged so as to face an upper part of a roaster and is adapted to perform a suction action, wherein an outer smoke collecting hood is provided outside a duct pipe having a downward suction hole so as to have an inner space of the hood. An exhaust gas suction structure for an up-drawing roaster, which is characterized in that a plurality of baffle plates are installed at equal intervals in the vertical direction of the space inside the hood. 2. The upward suction structure for a roaster according to claim 1, wherein a suction hole is provided on a side surface or an upper portion of the duct pipe to form the space inside the hood as a suction space. 3. The upward suction in the roaster according to claim 1 or 2, wherein the baffle plate is a partition wall in the radial direction, and a distribution space is provided around the partition wall or the partition wall. Construction. 4. The updraw suction structure for a roaster according to claim 3, wherein the partition wall is provided with a through hole. 5. The roaster according to claim 3, wherein the partition wall has an area smaller than the cross-sectional area of the hood space, and the space surrounding the partition wall is a distribution space. Suction structure. 6. The upward suction structure for a roaster according to claim 3, 4 or 5, wherein the positions of adjacent partition walls or the circulation spaces provided around the partition walls are different. 7. The baffle plate is formed in an up-down direction inclined with respect to a vertical plane.
The upward pulling suction structure in the roaster according to 5 or 6. 8. A duct pipe that acts as a suction member is equipped with an oil / fat adsorbent therein.
The upper pulling suction structure in the roaster according to 5, 6, or 7.