JP2001133144A - Smoking and drying device and tar removing method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smoking and drying device which can prevent the adhesion of tar contained in smoke to its heating section. SOLUTION: A smoking and drying device 1 is provided with a main body A having an accepting section (a) which smokes a material 10 to be processed while drying, a smoke supplying passage 2 which is communicating with the main body A and supplies smoke to the main body A, and an air passage P having an air inlet P2 which takes in the air in the section (a) and an air outlet P1 which blows air into the section (a). The device is also provided with a heating section 6 which is provided in the air passage P and heats the air in the passage P and a blower F which is provided in the passage P, introduces air to the air passage P through the air inlet P2, and discharges the air to the section (a) through the air outlet P1. The heating section 6 heats the air by making heat exchange with the external surface of a combustion gas discharging passage 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a smoke drying apparatus and a method for removing tar from the smoke drying apparatus, and more particularly to a smoke drying apparatus capable of preventing tar contained in smoke from adhering to a heating section. The present invention relates to a method for removing tar in a smoldering apparatus.

[0002]

2. Description of the Related Art Conventionally, as a heat source of a heating unit of a smoking and drying apparatus,
Although steam of about 120 ° C. by a boiler and a condenser of a refrigeration cycle are used, tar contained in smoke adheres to the outer surface of the heating unit with the passage of time.

[0003]

If the tar adheres to the heating section, the heat exchange efficiency is reduced and the adhered tar is reduced.
In order to remove the oil, the drying device must be stopped,
Moreover, once the tar adheres, there is a problem that the removal operation is very difficult. SUMMARY OF THE INVENTION The present invention provides a drier and a method for removing tar from a drier which eliminates the above-mentioned problems.

[0004]

According to a first aspect of the present invention, there is provided a smoke drying apparatus, comprising: a main body having a receiving portion for smoking while drying a workpiece; A smoke supply passage for supplying smoke to the main body, an air passage having an air intake opening for taking in air in the receiving portion and an air discharge opening for discharging air to the receiving portion, provided in the air passage; A heating unit that heats the air in the air passage; and a heating unit that is provided in the air passage and guides the air into the air passage through the air intake port, and discharges the air to the receiving unit through the air discharge port. The blower and the heater heat the air by exchanging heat with the outer surface of the combustion gas exhaust passage.

According to a second aspect of the present invention, there is provided a method for removing tar in a smoking apparatus, wherein a main body having a receiving portion for smoking while drying a workpiece is communicated with the main body, and smoke is supplied to the main body. A smoke supply passage, an air passage provided with an air intake port for taking in the air in the receiving section, and an air discharge port for discharging air to the receiving section, and provided in the air passage, and the air in the air passage is provided. A smoke unit comprising: a heating unit for heating; and a blower provided in the air passage, for guiding air into the air passage through the air intake, and for discharging air to the receiving unit through the air discharge opening. A drying device for heating the air by exchanging heat with an outer surface of an exhaust passage of the combustion gas, wherein the heater attaches tar adhered to the outer surface of the exhaust passage to an outer surface of the exhaust passage. Volatilization or combustion due to high temperature So it is intended to remove.

According to a third aspect of the present invention, there is provided a smoke drying apparatus, comprising: a substantially rectangular parallelepiped main body having a receiving portion for smoking while drying a workpiece; and a smoke communicating with the main body and supplying smoke to the main body. A supply passage, an air passage provided with a first supply / exhaust port serving as an inlet / outlet of air in the receiving section, and a second supply / exhaust port serving as an inlet / outlet of air in the receiving section; A first passage side wall portion provided along the side walls and the ceiling, connected to the ceiling portion, connected to the ceiling portion, and opposed to one of the side walls of the side walls of the main body, and connected to the ceiling portion; A second passage side wall opposing the other one of the side walls of the main body, wherein the first air supply / exhaust port is provided in a plurality provided in a vertical direction of the first passage side wall. The second air supply / exhaust port is provided in a direction perpendicular to the side wall of the second passage. A plurality of openings, provided in the air passage, for heating the air in the air passage, and the heating unit heat-exchanges the air by exchanging heat with an outer surface of a combustion gas exhaust passage. A blower that is provided in the air passage, guides air into the air passage, and discharges air to the receiving portion, and the blower includes first and second blowers located before and after the heating unit. The said first
The first state in which the heating section is located on the suction side of the blower and the heating section is located on the discharge side of the second blower, and the heating section and the first blower are located on the suction side of the second blower. And a control device for controlling the rotation of the first and second blowers so as to alternately repeat the second state in which the heating unit is located on the discharge side.

According to a fourth aspect of the present invention, there is provided the smoky drying apparatus according to the third aspect, wherein the smoke supply passage for supplying the smoke to the main body has a third configuration in which the smoke is forcibly supplied to the main body. A blower is provided.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a first embodiment of the present invention; Reference numeral 1 denotes a smoking device, which smokes a workpiece 10 (eg, bonito, mackerel, sardine, etc.) while drying it, and is particularly suitable for initial drying of bonito (boiled bonito). A main body A having a substantially rectangular parallelepiped shape having a receiving portion a therein is provided. The workpiece 10 is housed in a case 12 formed of a wire net on a carriage 11.

A smoke supply passage 2 communicates with the main body A and supplies smoke to the main body A. In the smoke supply passage 2, a third blower 3 for forcibly supplying smoke to the main body A is provided. I have. P is a first air supply / exhaust port P ₁ which is an air inlet / outlet in the receiving section a.
And a second air supply / exhaust port P which is an air inlet / outlet in the receiving section a.
₂ , the air passage P is provided along the opposite side walls A1, A2 and the ceiling A3 of the main body A, and is connected to the ceiling PA3 and the ceiling PA3. A first passage side wall portion PA1 facing one side wall A1 of both side walls A1 and A2, and a second passage connected to the ceiling portion PA3 and facing the other side wall A2 of the both side walls of the main body A. And a side wall PA2.

[0010] The first supply and exhaust port P ₁ has a plurality of openings over the entire vertical direction of the first passage side wall portion PA1. Second supply and exhaust port P _2, the second passage side wall portion PA2
Have a plurality of openings throughout the vertical direction.

Reference numeral 6 denotes a heating unit for heating the air in the air passage P.
The heating unit 6 is provided in the air passage P. This addition
The heat part 6 exchanges heat with the outer surface of the exhaust passage 61 of the combustion gas to become empty.
62 is a combustion chamber for combustion gas.
You. In the air passage P, air is introduced into the air passage P.
Blower F for discharging air to the receiving section a
You. This blower F has first,
Second blower F₁ , F_TwoAnd the control device 7
First and second blowers F located before and after the heating unit 6 ₁ , F
_Two Controlling the rotation direction of the number of rotations, and the rotation direction
Is rotated in reverse by a timer, for example.
F₁ Heating unit 6 on the suction side of the second blower F_Two Discharge
A first state in which the heating unit 6 is located on the side (see FIG. 4);
2 blower F_Two Heating section 6 on the suction side of the first blower
F₁ In the second state in which the heating unit 6 is located on the discharge side of FIG.
And the second blower F so as to alternately repeat
₁ , F _Two To control the rotation. The body
Air from outside flows in through an opening (not shown)
The air in the part a goes out of the main body A through the exhaust duct 20 shown in FIG.
And discharge it.

Therefore, the workpiece 10 is placed in the receiving section a by the carriage 11.
And the heating unit 6 as shown in FIG.
The air in the main body A is heated, and
While the smoke is supplied to the main body A, the workpiece 10 is dried.
Smoke. In addition, the state shown in FIG.
Although the portion communicating with the main body A has a positive pressure, the third blower 3
Thus, smoke can be forcibly supplied to the main body A. Ma
In addition, the state shown in FIG.₁ Suction side of
Heating unit 6, the second blower F_Two Heating section 6 on the discharge side of
The first blower F ₁ Is pushed
Fan, second blower F_Two Acts as a suction fan
And a portion surrounded by the first passage side wall portion PA1 and the side wall A1.
Shop M, surrounded by the second passage side wall PA2 and the side wall A2
The room N is a kind of pressure adjusting chamber, and the first passage side wall P
A first air supply / exhaust port P provided in the vertical direction of A1₁ Multiple open
Mouth (first air supply / exhaust port P₁ Is an air outlet. )
The air reaches the receiving part a uniformly to some extent over the upper and lower sides of
And flows in the vertical direction of the second passage side wall PA2.
Supply and exhaust port P of 2_Two Openings (second air supply / exhaust port P)_Two 
Is the air intake. There is air above and below
It is sucked in evenly. As a result,
Prevent uneven drying and smoking of the workpiece 10 to be placed
Can be. Particularly, it adheres to the outer surface of the exhaust passage 61
The temperature of the outer surface of the exhaust passage 61 is high (for example, 250 ° C.).
~ 700 ° C) to remove by volatilization or burning.
Heat exchange efficiency due to tar adhesion of the heating section 6 which has occurred conventionally
And the air volume can be prevented from decreasing.

After the first state described above is continued for T time,
The control device 7 shifts to the second state. Second state
Are the first and second air blows in the first state, as shown in FIG.
Machine F ₁ , F_Two The rotation direction of the rotation speed of the
Machine F_Two Heating section 6 on the suction side of the first blower F₁ Spitting
The heating unit 6 is located on the exit side. In this case,
On the contrary, the first blower F₁ Is a suction fan, the second
Blower F_Two Acts as a push-in fan, as above
The portion surrounded by the first passage side wall portion PA1 and the side wall A1
Shop M, surrounded by the second passage side wall PA2 and the side wall A2
The room N is a kind of pressure adjusting chamber. As a result, the second
Second air supply / exhaust port P provided in the vertical direction of road side wall PA2_Two
Openings (second air supply / exhaust port P)_Two Is an air outlet
Becomes Air is uniformly distributed over the top and bottom of the
a, and flows in the vertical direction of the first passage side wall PA1.
First air supply and exhaust port P provided in₁ Openings (first supply)
Exhaust port P₁ Is the air intake. Above and below)
Air is sucked into the air to some extent. This second form
After the state has been continued for T hours, the controller 7 shifts to the first state.
Transition. Thereafter, the first state and the second state are alternately repeated.
Turn over and remove uneven drying of the workpiece 10 located in the left and right direction.
Prevent smoke unevenness, dry unevenness and smoke of the entire workpiece 10
Unevenness can be prevented.

[0014]

According to the first aspect of the present invention, the tar adhering to the outer surface of the exhaust passage is removed by volatilizing or burning due to the high temperature of the outer surface of the exhaust passage. Decrease in heat exchange efficiency due to the adhesion of tar on the heating section,
A decrease in air volume can be prevented.

According to a second aspect of the present invention, the tar adhering to the outer surface of the exhaust passage is removed by volatilizing or burning by the high temperature of the outer surface of the exhaust passage. Therefore, it is possible to prevent a decrease in heat exchange efficiency and a decrease in air flow due to the adhesion of tar on the heating unit, which has conventionally occurred.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the insertion portion has a thickness, it can be used before and after the cover inserted through the insertion portion. The cover is separated from the opening, but the cover is inserted through the insertion portion by contacting the holding member with the surface of the cover.
The distance between the cover and the opening before and after the step can be prevented.

According to the third aspect of the present invention,
In addition to the effects of the first aspect, the first supply / exhaust port has a plurality of openings in the vertical direction of the first passage side wall, and the second supply / exhaust port has the second passage side wall. Since a plurality of openings are respectively provided in the vertical direction of the section, uneven drying and smoking of the workpiece located in the vertical direction are prevented, and first and second blowers are provided before and after the heating section. And the control unit controls the heating section on the suction side of the first blower, the heating section on the discharge side of the second blower, and the heating section on the suction side of the second blower. The second state, in which the heating unit is located on the discharge side of the blower, is alternately repeated to prevent uneven drying and smoking of the workpiece located in the left-right direction, and to make the air flow more uniform. As a result, it is possible to prevent uneven drying and smoking of the entire workpiece.

A first state in which a heating unit is located on the suction side of the first blower and a heating unit is located on the discharge side of the second blower, and a heating unit and a first heating unit are located on the suction side of the second blower.
And the second state in which the heating unit is located on the discharge side of the blower is alternately repeated, so that the portion communicating with the main body of the smoke supply passage becomes positive pressure or negative pressure. ,
Although smoke cannot be supplied to the main body, according to the smoldering device of the fourth aspect, smoke can be forcibly supplied to the main body by the third blower. Regardless of the state, smoke can be reliably supplied into the main body.

[Brief description of the drawings]

FIG. 1 is a schematic partial side sectional view showing a cross section of a part of a drying apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the smoking device of FIG. 1;

FIG. 3 is a schematic sectional view taken along line XX of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line YY of FIG. 3, showing a first state;

FIG. 5 is a schematic cross-sectional view showing a second state.

[Explanation of symbols]

1 Ibushiinui device 2 smoke supply passage 6 heating unit A body a receiving part F blower P air passage P ₁ air outlet P ₂ air intake 10 the workpiece

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inotomo Kawamura Inotomi 314 Katahama, Sagara-cho, Haibara-gun, Shizuoka Prefecture F-term (reference) 3L113 AB02 AB10 AC05 AC15 AC16 AC52 AC53 AC83 AC90 BA16 DA22

Claims (4)

[Claims] 1. A main body having a receiving portion for smoking while drying a workpiece, a smoke supply passage communicating with the main body and supplying smoke to the main body, and an air intake for taking in air in the receiving portion. An air passage provided with an air discharge port for discharging air to the receiving portion; a heating portion provided in the air passage, for heating air in the air passage; and an air passage provided in the air passage, A blower that guides air into the air passage through an intake port and discharges air to the receiving unit through the air discharge port; andthe heating unit exchanges heat with an outer surface of a combustion gas exhaust passage to exchange air. A smoke-drying device characterized by heating. 2. A main body having a receiving portion for smoking while drying a workpiece, a smoke supply passage communicating with the main body and supplying smoke to the main body, and an air intake for taking in air in the receiving portion. An air passage provided with an air discharge port for discharging air to the receiving portion; a heating portion provided in the air passage, for heating air in the air passage; and an air passage provided in the air passage, A blower that guides air into the air passage through an intake port and discharges air to the receiving unit through the air discharge port, wherein the heating unit includes a combustion gas exhaust passage. The air is heated by exchanging heat with the outer surface, and tar adhering to the outer surface of the exhaust passage is removed by volatilizing or burning by the high temperature of the outer surface of the exhaust passage. Drying equipment tar Removal method. 3. A substantially rectangular parallelepiped main body having a receiving portion for smoking while drying a workpiece, a smoke supply passage communicating with the main body and supplying smoke to the main body, and an air supply passage in the receiving portion. An air passage including a first air supply / exhaust port as an entrance and an air supply / exhaust port as an air entrance / exit in the receiving portion; and an air passage provided along both side walls and a ceiling of the main body. A ceiling portion, a first passage side wall portion connected to the ceiling portion and facing one of the side walls of the main body, and a first passage side wall portion connected to the ceiling portion and the other of the two side walls. A second passage side wall portion facing the side wall of the first passage, wherein the first air supply / exhaust port is a plurality of openings provided in a vertical direction of the first passage side wall portion; The supply / exhaust port is a plurality of openings provided in a vertical direction of the second passage side wall, A heating unit that is provided in the air passage and heats the air in the air passage; and the heating unit exchanges heat with the outer surface of the exhaust passage of the combustion gas to heat the air. A blower that guides air into the air passage and discharges air to the receiving unit; the blower includes first and second blowers positioned before and after the heating unit; The heating unit on the suction side, the second
A first state in which the heating unit is located on the discharge side of the blower, and a second state in which the heating unit is located on the suction side of the second blower and the discharge side of the first blower. And a control device for controlling the rotation of the first and second blowers so as to alternately repeat the above. 4. A smoldering apparatus according to claim 3, wherein a third blower for forcibly supplying smoke to the main body is provided in a smoke supply passage for supplying smoke to the main body.