JPH02161221A - Calcination device - Google Patents

Abstract

PURPOSE:To lower the temperature of exhaust gas due to its emission through a smoke exhaust passage by installing continuously a projecting exhaust passage which projects into a baking box to the front of the exhaust passage and providing a heating source for smoke calcination in the projecting exhaust passage. CONSTITUTION:When a gas burner is mounted on the opposite side of an opening 12a-1, an approx. 1.5cm high narrow smoke calcination space is formed between the lower part and the bottom of a heating source 4, which is used as a smoke calcination burner. When this is placed on a box 2c comprising the lower half part of a baking box 2 on a rail 2c-1 and covered, a an exhaust passage 5, which projects forward above a rear wall of the box 2c, is formed. Ignition flames of an ignition burner 13 are adapted to ignite a gas burner used as the heating source 4 for smoke calcination by way of a penetration hole 14 provided on an outside wall 2a and a bottom 12b-1 of the box 2 so that the gas burner which is a heating source 8 for cooking may be ignited by the flame transfer from the heating source for smoke calcination.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a baking device for an oven, a fish frying device, or a meat grilling device.

(Prior art) A conventional oven in which a heating source for roasting the smoke generated during grilling and cooking was provided in the smoke exhaust passage was disclosed in Utility Model 60-1.
It is known from Publication No. 06004.

(Problem to be Solved by the Invention) However, in all conventionally known devices, the heating source for smoke roasting facing the smoke exhaust passage is provided at the exit of the smoke exhaust passage away from the baking chamber or at a portion close to this. . For this reason, oil and other substances contained in the smoke generated in the firing chamber are attached to the smoke exhaust passage.
Not only is it prone to dirt, but it also causes problems such as an increase in exhaust temperature at the exit of the smoke exhaust passage.

In order to solve this problem, a heat source for smoke roasting may be provided on the baking chamber side of the smoke exhaust passage, and the smoke exhaust passage may be of a rear exhaust type with a long rearward direction.

However, when doing so, there is a problem in that the entire baking machine becomes longer in the front and back direction.

The object of the present invention is to obtain a firing device free from such defects.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a firing chamber in which a front opening is provided with a chamber that can be freely opened and closed, and a heating source for cooking is provided inside. A smoke exhaust passage is led out from the rear upper part, and a smoke roasting heat source for roasting the smoke is provided in the exhaust passage, and a protruding exhaust passage that projects into the baking chamber at the front end of the exhaust passage. and a heating source for smoke roasting is provided in the protruding discharge passage.

(Function) In the combustor having the above configuration, the smoke generated in the firing chamber is heated by the heat from the heat source for roasting the smoke when the temperature is high immediately after flowing into the projecting passage. The unburned matter contained in this is burnt out. The smoke is then exhausted through a smoke exhaust passage extending rearward, resulting in a lower exhaust temperature than conventional smoke exhaust.

Moreover, since the heat source projects to the rear upper part of the firing chamber, even if it is made longer, the entire firing chamber does not become longer.

(Example) A case will be described in which an example of the implementation of the present invention is applied to a cooking stove.

In the drawing, 1 is the firing chamber, 2 is a firing chamber installed in the firing chamber, and 3 is a smoke exhaust passage for discharging the smoke generated in the firing chamber 2. A protruding discharge passage 5 protruding into the warehouse is provided in series, and a heat source 4 for smoke roasting is provided in the protruding discharge passage 5.

To explain this in more detail with respect to the embodiment shown in FIGS. 1 to 6, the baking chamber 2 is equipped with an opening/closing door 1 that closes an opening 6 provided on the front side of the baking chamber 2. The heating source 8 for cooking is equipped with a gas burner as a heating source 8.
A ceramic plate 11 having a large number of flame ports 10 is attached to the lower surface of a burner body 9 common to the gas burner as a gas burner and the burner as a heat source 4 for smoke roasting to form a surface combustion type gas burner b. In this case, there are two ceramic plates 11, the front and the rear, and the rear half of the additional heat source 8 and the heat source 4 are formed on the rear ceramic plate 11, so that the heat source 8 and the heat source 4 are continuously configured.

12 indicates a top frame facing the upper part of the baking vessel 1;
2 is made by welding and connecting the front half 12a and the rear half 12b as shown in FIG. 4, and then performing enamel treatment, and the front half 12a faces the ceramic plate 11 of the gas burner b constituting the ship's heat source 4.8. It consists of a rectangular frame with an opening 12a-1, and the rear half 12b includes a bottom part 12b-1 and an L-shaped cylindrical part 12b-2, and a catalyst filter attachment part is provided at the discharge port 3a of the cylindrical part 12b-2. 3b, and an ignition hole 14, which will be described later, was formed in the bottom portion 12b-1.

Both sides overlap the back side of the lower plane part 12a-3 of the first half part 12a with the bottom part 12b-1 of the second half part 12b,
First half! The front end surface 12c of the cylindrical portion 12b-2 of the rear half portion 12b is brought into contact with the rear end surface 12a-4 of 2a and connected by welding,
Thus, when the gas burner b is installed so as to face the opening 12a-1 of the front half 12a, the lower surface of the heating source 4 and the bottom surface 12b
-1 and the height 1 between which the heating source 4 is a smoke roasting burner
．． A narrow smoke roasting space of about 5 cm is formed.

Place this on the rail 2 on the box 2c that constitutes the lower half of the firing chamber 2.
When placed on top of cm1, the rear wall 2 of the box 2c
The protruding discharge passage 5 is formed above e and protrudes forward.

In the drawing, reference numeral 13 indicates an ignition burner for igniting the heat source 4 for smoke roasting, and the ignition flame of the ignition burner 13 is provided on the outer walls 2a, 2b and the bottom part 12b-1 of the baking chamber 2. The gas burner serving as the heat source 4 for smoke roasting is ignited through the through hole 14, and the gas burner serving as the heat source 8 for cooking is ignited by the transfer of flame from the heat source 4 for smoke roasting. I did it like that.

In this case, the lower surface of the gas burner constituting the heat source 4 for smoke roasting is narrow, and therefore, the lower surface is easily filled with fuel gas released from the gas burner at the time of ignition, and it is particularly difficult to ignite. Even if there is a surface combustion type burner in the burner, it has the advantage of being easier to ignite. Moreover, since the pressure inside the discharge passage 3 is lower than that inside the firing chamber 2, hot air does not flow out through the through hole 14.

In the above embodiment, the heat source 4 for smoke roasting and the heat source 8 for cooking are continuously formed by the same ceramic plate 11 provided on the lower surface of a common burner body 9. In the burner body, the ceramic plate 11 and the heating source 4 may be separated and configured in a continuous manner. When this is done, the influence of thermal distortion of the ceramic plate 11 is reduced, and the ceramic plate 1
1 becomes less likely to cause problems such as cracking. Also, both gas burners 4.8 are formed on a common ceramic plate 11 provided on a common burner body 9, and a flameless hole is provided between the two, leaving a flame hole for flame transfer between the two. The gas burner may be separated but connected, or the heating sources 8 and 4 may be made of separate ceramic plates tiSit in the same burner body, and the heat sources 8 and 4 may be placed between the two heat sources 8 and 4 for flame transfer. It is also possible to provide a small flameless hole with a small flameless hole, and to connect the double-jaw heat sources 8 and 4 in series, or to install the double-jaw heat sources 4 and 4 in separate burner bodies as shown in FIG. The ceramic plates 11 each having a burner port 10 may be attached to the lower surface of the heat source 9, and the heat sources 4.8 for both jaws may be completely independently connected. In this case, between the side gas burners, the flame transfer from the heat source 4 for smoke roasting to the heat source 8 for cooking is performed by a flame guide 32 extending between the two.

In either case, the heating source 4 above the protruding exhaust passage 5
The barrel gas burner has the gas burner, which is the cooking heating source 8, and the burner body 9, which are connected in series or connected to each other, or they are installed in series even if they are not in common, so there is an advantage that it is easy to ignite the flames of both gas burners, and the burner body If 9 is common, the structure will be simple.

Furthermore, the heating source 8 for cooking and the heating source 4 for smoke roasting are not limited to those equipped with the ceramic plate 10, but a vibrator burner can also be used as shown in FIGS. 8 and 9. The heating source 8 can be provided at the lower part of the baking chamber 2 as shown in FIGS. 10 and 11, and the food can be grilled from the bottom surface.Furthermore, the double-jaw heat source 4.8 can be an electric heater. I can do it.

In the embodiment shown in the surface portions 1 to 6, the surface of the protruding discharge passage 5 facing the heating #, 4 tends to become particularly high temperature. Therefore, it is desirable to take heat-resistant measures such as forming a recess in the surface and filling it with refractory material.

In the surface portions 1 to 6, 15 is the catalyst mounting portion 3b.
The oxidation catalyst filter is shown to be attached to the oxidation catalyst filter, and the oxidation catalyst filter is used to chemically change CO in the exhaust gas into CO□ to purify the exhaust gas.

The oxidation catalyst filter 15 is attached to the attachment portion 3b through the attachment case 16 as shown in FIG. This mounting case 1B has openings 1 at the top and bottom as shown in FIG.
6a 518a, and protrudes downward from the lower part of one side in the longitudinal direction of the mounting case 16.
and a protrusion 18c protruding laterally at the lower part of the other side of the mounting portion 3.
After the projecting piece teb is inserted into the slots 3b-1 and 3b-1 provided in the mounting portion 3b and attached to the mounting portion 3b, the projecting piece teb is bent and fixed. Incidentally, each side wall of the mounting case 16 is provided with a cut-and-raised piece LED, led, etc. that protrudes inwardly, and the cut-and-raised piece 16
d. The oxidation catalyst filter 15 was supported within the mounting case 16 so as not to rattle by being sandwiched between the LEDs.

In the above-described embodiment, both sides of the protruding discharge passage 5 are closed, but this does not necessarily have to be closed.

Furthermore, as mentioned above, by placing the heat source 4 for smoke roasting in front of the narrow part of the protruding discharge passage 5, smoke roasting becomes effective. This increases the passage resistance of the smoke exhaust passage 3.

Therefore, if there is a gap in the baking chamber 2, hot air tends to leak out.

For this reason, in this embodiment, the flange portion 12a-2 formed at the front end of the entry frame 12 is brought into contact with the back surface of the edge frame 2d forming the front opening G provided on the front surface of the container 2c forming the baking chamber 2. This prevents hot air from entering the upper surface of the top plate frame 12 as much as possible, and also ensures that the upper half of the edge frame 2d is in close contact with both sides of the rear surface of the door 7 facing the front surface of the door 7. This prevents hot air from flowing out through the gap with the door 7 and heating the operating knobs A and the like facing on both sides.

Note that reference numeral 17 indicates a clip piece that clips the door 7 to the closed position to ensure this close contact.

Also, a gap 7a is provided at the bottom of the door 7 as an air intake.Furthermore, for the reason mentioned above, as the temperature of the baking chamber 2 increases, the temperature of the top plate 19 tends to increase as well. For this purpose, an opening 18 is provided on the upper surface of the firing chamber 2 and is located in front of the exit of the smoke exhaust passage 3 of the top plate 19.
A gap 20 between the baking chamber 2 and the top plate 19 facing the upper surface thereof.
The openings 18 are made to communicate with each other so that hot air on the upper surface of the firing chamber 2 is released through the openings 18.

Reference numeral 21 indicates a cover provided on the opening 18 and the upper surface of the exit of the smoke exhaust passage 3, and the cover 21 has openings 22.
23, and the opening 22 is further provided with a hood 24 that covers the upper surface of the opening 22. The cover 21 and the hood 24 are assembled into one body, and the cover 21 has leg pieces 25 projecting downward from both sides thereof. .25 so that it is inserted and supported in an insertion hole 26 provided in the baking machine main body 1.

In this case, the hot air flowing out from the opening 18 passes through the outside of the smoke exhaust passage 3 as shown by the arrow and is exhausted from the rear opening 23.

Further, the temperature of the portion of the smoke exhaust passage 3 exposed outside the sintering device body 1 tends to be high due to the above-mentioned reason. There is a risk that the gas pipe 27 may be damaged by touching it.

For this reason, a heat shield plate 28 was provided in this area.

In FIG. 2, reference numeral 29 indicates a fan whose exhaust port is connected to the exhaust passage 3 downstream of the smoke roasting gas burner in the smoke exhaust passage 3, and a door is connected to the operating circuit 3o of the motor 29a that drives the fan 29. Interpose a switch 31 that closes when 7 is opened,
The fan 29 is operated in conjunction with the opening operation of the door 7.

When doing so, narrow the area where the heat source for smoke roasting is installed to improve smoke roasting, or install a catalytic filter in the smoke exhaust passage. When the door 7 is opened, the smoke tends to be discharged from the opening 6, but this can be solved.

The oxidation catalyst filter 15 may be provided facing the bottom surface of the heating source 4 as shown in FIG. The lower surface of the protruding passage 5 can be protected from heat.

1 to 6 show an embodiment in which a heating source 4 for smoke roasting is provided in addition to the heating source 8 for cooking, but as shown in FIG. 12, the heating source 8 for cooking 1. A part of the gas burner b is exposed into the protruding discharge passage 5. A gas burner facing the protruding discharge passage 5 can also be used as a heat source for smoke roasting, and in this case, the narrow protruding discharge passage 5
The atmospheric temperature of the portion of the gas burner 5 facing the inside increases, and thereby the smoke can be sufficiently roasted. In addition, 33 in the drawing
shows a thermal lightning pair for flame detection.

(Effects of the Invention) Since the present invention is configured as described above, it produces the following effects. That is, in the combustor of claim 1, since the heat source for smoke roasting is provided in the protruding exhaust passage, the smoke exhaust passage can be made long without increasing the length of the sintering body in the front and back direction. Since the heat source for smoke roasting is placed in the protruding discharge passage, the smoke generated in the firing chamber can be further heated and roasted using the high temperature heat source for smoke roasting, so the heat amount of the heating source can be compared. The smoke can be roasted at the same time as it enters the exhaust passage, and then released to the outside through the smoke exhaust passage. Compared to the case where the heat source is installed continuously or in series, the burner of claim 2 can suppress the exhaust temperature relatively low and can be used safely. The smoke is constantly exposed to the heating source until it is roasted by the source and becomes smokeless and odorless, so the temperature of the smoke decreases and the oil and other substances contained in it are resistant to the walls of the firing chamber and the protruding discharge passage. This prevents the inconvenience of the gas from getting dirty, and in the firing device of claim 3, it is easy to transfer the fire to both gas burners.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the implementation of the present invention, Fig. 2 is an enlarged cross-sectional view taken along the line ■-■, Fig. 3 is a perspective view taken along the line ■-■, and Fig. 4
The figure is an exploded perspective view of the main parts, Figure 5 is a perspective view showing the state in which the rear cover is separated, Figure 6 is an exploded perspective view of the oxidation catalyst filter and the mounting case, and Figures 7 and 8 are the other parts. FIG. 9 is a perspective view of the gas burner of the embodiment shown in FIG. 8, FIG. 1O is a cut side view of the main part of another embodiment, and FIG. -XI diagram, 1st
FIG. 2 is a cut side view of still another embodiment. 2...Calcination chamber 3...Smoke exhaust passage 4...Heating source 5...Protruding exhaust passage Figure 7 Figure 8 Ln Procedural amendment 1988 Date of the incident 1988 Patent Application No. 228177 2, Name of the invention: Burner 3, Relationship with the case of the person making the amendment Patent applicant Rinnai Co., Ltd. 4, Agent 6, Claims of the specification to be amended and the claim of the invention Detailed explanation field,
Drawing 7, Contents of Amendment 1, and Claims are amended as shown in the attached sheet. 2. Add "etc." next to "meat griller" in the first line of page 2 of the specification. 3. Correct "warehouse" in line 5 of page 3 of the specification to read "door." 4. On page 3, line 11 of the specification, “in the aisle” is followed by “the above”
join. 5. On page 3, line 19 of the specification, "exhaust temperature" is corrected to "exhaust temperature". 6. In the second line of page 5 of the specification, "rear" is corrected to "rear". 7. Delete "attached" in the third line of page 5 of the specification. 8. On page 6, line 6 of the specification, the phrase "above" is corrected to "above this." 9. Add "Heating source 8 for cooking" next to "Heating source 4" on page 7, line 8 of the specification. 10. "Gas burner" on page 7, line 13 of the specification is corrected to "heating source." 11. On page 7, line 15 of the specification, "gas burner" is corrected to "gas burner". 12. From line 5 to line 6 of page 8 of the specification, the phrase ``between both gas burners'' is deleted. 13. In the 7th line of page 8 of the specification, the word "cross" is corrected to "straddle". 14. Add "ga" next to "ignition" on page 8, line 13 of the specification. 15. "Plate bar 12" on page 10, line 20 of the specification is corrected to "section frame 12." 16. Next to "Provision" on page 13, line 14 of the specification, add "The heating source 4 is configured to extend not only to the protruding exhaust passage 5 but also to the smoke exhaust passage 3." 17. Add "only" next to "within 5" on page 13, line 17 of the specification. 18. Figures 2 and 8 are corrected as shown in the attached sheet. 2. Scope of claims ■. The firing chamber is equipped with a front door that can be opened and closed, and a heating source for cooking inside. In the device provided with a heat source for smoke roasting, a protruding discharge passage protruding into the baking chamber is connected to the front end of the discharge passage, and the heat source for smoke roasting is provided in the protruding discharge passage. A kiln equipped with a 2. The baking machine according to claim 1, further comprising a heat source for smoke roasting that is connected to or connected to the heat source for cooking. 3. The baking machine according to claim 2, wherein the heating source for cooking and the heating source for smoke roasting are gas burners.

Claims (1)

[Claims] 1. A firing chamber is provided in the firing chamber with a door that can be opened and closed at the front opening and a heating source for cooking inside, and a smoke exhaust passage is led out from the rear upper part of the firing chamber, In the case where the exhaust passage is provided with a heating source for roasting the smoke, a protruding exhaust passage that protrudes into the baking chamber is connected to the front end of the exhaust passage, and the protruding exhaust passage is connected to the front end of the exhaust passage. A kiln equipped with a heating source for smoke roasting. 2. The baking machine according to claim 1, further comprising a heat source for smoke roasting that is connected to or connected to the heat source for cooking. 3. The baking machine according to claim 2, wherein the heating source for cooking and the heating source for smoke roasting are gas burners.