KR101904266B1 - Food waste disposer comprising flow path switching module and method for disposing of exhaust gas through circulation process using the same - Google Patents

Abstract

The food processor according to the present invention comprises a drying furnace; An inlet / outlet module communicating with the drying furnace; A flow path switching module for controlling the flow direction of the exhaust gas flowing from the drying furnace; A heat exchanger connected to the flow path switching module; A buffer tank communicating with the flow path switching module; An opening / closing sensor for detecting opening / closing of a door disposed above the intake / discharge module; And a control unit electrically connected to the flow path switching module and the opening / closing detection sensor, wherein the control unit operates the flow path switching module according to a measurement value from the opening / closing detection sensor, To the buffer tank.
According to the present invention, an increase in pressure in the channel switching module can be prevented by selectively opening and closing a plurality of outlets in a channel switching module based on measured values in a pressure sensor installed in an opening / closing sensor or a channel switching module installed in a door Can be effectively prevented.

Description

The present invention relates to a food waste disposal apparatus, and more particularly, to a food waste disposal apparatus and a circulation type waste gas disposal method using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a food processor including a channel switching module and a circulating exhaust gas processing method using the same, and more particularly, to a food processor that includes a channel switching module that communicates with any one of a plurality of fans connected to a motor, And a circulating exhaust gas treating method using the same.

Generally, a certain amount of food waste is discharged every day from households or restaurants, and such food waste is disposed of only after the water has been filtered through a simple screen. Such a conventional food garbage disposal method causes unpleasant odors to pollute the surrounding air if garbage is not frequently discarded. Due to recent improvements in eating habits and increase in restaurants, many food waste has been discharged from households or catering establishments. In addition, most of the food waste has been abandoned in a state containing a large amount of water, thereby causing pollution of the environment.

Generally, the food waste treatment system is capable of hygienic treatment by powder drying through the steps of stirring, crushing, and drying the foodstuffs that have been introduced, and has been widely recognized as an eco-friendly product by reducing the volume thereof .

BACKGROUND ART [0002] In recent years, a circulating type food processor has been used as an example of a food processing machine. In the circulating type food processor, the exhaust gas of high temperature and high humidity generated in the drying furnace is cooled and condensed and discharged. So that the process is completed.

In the recirculating food processor, hot and humid exhaust gases are recirculated without being discharged to the outside, so that they must be recirculated continuously through a circulating fan that is linked to a motor with a relatively high power. Further, since the exhaust gas is not discharged to the outside, a large amount of moisture of the exhaust gas must be recycled after being condensed and removed. To this end, a high-performance heat exchanger must be used. Thus, a dual fan module drive system of a circulating fan module and a cooling fan module is required for recirculation and cooling of the exhaust gas discharged from the drying furnace.

On the other hand, the exhaust gas generated in the drying furnace through the plurality of fan modules and the heat exchanger causes the condensation circulation. Often, the generation of excessive exhaust gas in the driving process sometimes exceeds the capacity to be treated in the heat exchanger. In this case, the instantaneous increase of the excessive exhaust gas causes an increase in pressure in the circulating food processor, resulting in a problem of damaging the internal parts.

In addition, when condensation of the exhaust gas through the heat exchanger is not smooth, the odor remaining in the drying furnace and the intake and exhaust module is directly discharged in the process of opening and closing the door on the upper part of the circulating type food processor, There is a problem that it causes discomfort.

In order to solve the above problems, the present invention provides a fan module assembly including a flow path switching module for selectively flowing exhaust gas through a plurality of outlets, a food processor including the same, and a circulating exhaust gas treating method using the same The purpose is to provide.

According to an aspect of the present invention, there is provided a food processor comprising: a drying furnace; An inlet / outlet module communicating with the drying furnace; A flow path switching module for controlling the flow direction of the exhaust gas flowing from the drying furnace; A heat exchanger connected to the flow path switching module; A buffer tank communicating with the flow path switching module; An opening / closing sensor for detecting opening / closing of a door disposed above the intake / discharge module; And a control unit electrically connected to the flow path switching module and the opening / closing detection sensor, wherein the control unit operates the flow path switching module according to a measurement value from the opening / closing detection sensor, To the buffer tank.
According to another aspect of the present invention, there is provided a food processor including a drying furnace; An inlet / outlet module communicating with the drying furnace; A flow path switching module for controlling the flow direction of the exhaust gas flowing from the drying furnace; A heat exchanger connected to the flow path switching module; A buffer tank communicating with the flow path switching module; A pressure sensing sensor disposed in the flow path switching module; And a control unit electrically connected to the flow path switching module and the pressure detection sensor, wherein the control unit operates the flow path switching module according to a measurement value from the pressure detection sensor, and outputs the discharge gas to the heat exchanger To the buffer tank.
The flow path switching module may preferably communicate with the fan module assembly.
The buffer tank may preferably communicate with the heat exchanger.
The fan module assembly includes: a first fan module and a second fan module having mutually different functions; And a motor disposed between the first fan module and the second fan module, wherein one of the first fan module and the second fan module is preferably communicated with the flow path switching module.
The flow path switching module includes: a flow path switching motor; And a valve rod pivotally coupled to the flow path switching motor, wherein the control unit controls the position of the valve rod by driving the flow path switching motor according to a measurement value from the opening / closing sensor or the pressure sensor May be preferred.
The flow path switching module may preferably have a single inlet and a plurality of outlets.
It may be desirable for the first fan module to interlock with the first shaft of the motor and the second fan module to interlock with the second shaft of the motor which is positioned against the first shaft relative to the motor .
The first fan module and the second fan module may be preferably sealed to each other.
The first fan module may be a circulating fan, and the second fan module may be a cooling fan.
The water treatment system further includes a backflow prevention trap disposed between the buffer tank and the deodorization module connected to the buffer tank, wherein the backflow prevention trap prevents water vapor from flowing into the deodorization module from the buffer tank May be preferred.
The motor may preferably comprise a single motor or a dual motor.
The first fan module may be disposed on the exhaust gas flow path, and the second fan module may preferably communicate with the outside air.
According to another aspect of the present invention, there is provided a circulating exhaust gas treating method comprising the steps of: (a) flowing an exhaust gas generated in a drying furnace to an intake and exhaust module; (b) flowing the exhaust gas flowing into the intake and exhaust module to a flow path switching module; (c) operating the channel switching module in accordance with a measurement value of an opening / closing sensor for detecting whether the door disposed at the upper portion of the inlet / outlet module is opened or closed; And (d) flowing the exhaust gas into a heat exchanger or a buffer tank connected to the flow path switching module according to the operation of the flow path switching module.
According to another aspect of the present invention, there is provided a circulating exhaust gas treating method comprising the steps of: (a) flowing an exhaust gas generated in a drying furnace to an intake and exhaust module; (b) flowing the exhaust gas flowing into the intake and exhaust module to a flow path switching module; (c) operating the channel switching module according to a measurement value from a pressure sensor disposed in the channel switching module; And (d) flowing the exhaust gas into a heat exchanger or a buffer tank connected to the flow path switching module according to the operation of the flow path switching module.
(E) after the step (d), the exhaust gas flowing from the flow path switching module to the heat exchanger is heat-exchanged by a cooling fan operated by a motor and converted into a recirculating gas; (f) flowing the recycle gas into the intake and exhaust module; And (g) flowing the recirculating gas, which has flowed to the intake and exhaust module, into the drying furnace.
Wherein the step (b) includes the steps of: the exhaust gas flowing into the intake and exhaust module flows into the exhaust gas passage by the circulation fan; And flowing the exhaust gas flowing into the exhaust gas passage to the heat exchanger or the buffer tank by the circulation fan.

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It is possible to provide a fan module assembly capable of driving two or more fan modules as a single motor and capable of providing high power with small volume without any loss of power.

According to the present invention, an increase in pressure in the channel switching module can be prevented by selectively opening and closing a plurality of outlets in a channel switching module based on measured values in a pressure sensor installed in an opening / closing sensor or a channel switching module installed in a door Can be effectively prevented.

At the same time, the deodorization module is selectively used based on the opening of the door and the internal pressure of the casing to minimize the use of the deodorization module, thereby improving the economy and efficiency.

1 is a conceptual diagram of a food processor including a fan module assembly according to the present invention;
2 is a perspective view of a food waste disposer according to the present invention;
3 is a perspective view of a fan module assembly in accordance with the present invention, and
4 is a cross-sectional view taken along line AA in Fig.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. The embodiments described are provided by way of illustration for the purposes of illustration and are not intended to limit the scope of the invention.

Each of the components constituting the fan module assembly and the food processor of the present invention can be integrally manufactured or separately manufactured as required. In addition, some components may be omitted depending on the usage pattern.

In addition, the fan module assembly according to the present invention, which can be used in a food processor, is characterized in that two integrated fan modules having different functions are interlocked with the integral main motor. For example, the food processor preferably includes a circulating fan module for circulating exhaust gas in the drying oven and a cooling fan module for facilitating heat exchange.

Conventionally, since each fan is disposed at a different position independently from each other, a separate power supply unit such as a motor for each fan module is separately required, and thus the volume of the food processor is inevitably increased. In the case of using the fan module assembly according to the present invention, since only the integral main motor is used, the volume can be reduced without lowering the food processing efficiency, and at the same time, the manufacturing cost can be lowered and the energy efficiency can be increased.

Hereinafter, a fan module assembly and a food processor including the same according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Overall configuration of the food processor

First, a general configuration of a food processor according to the present invention will be described with reference to FIG. 1 to FIG.

In the food processor according to the present invention, the first fan module 310 of the fan module assembly 300 may be used as a circulating fan module, and the second fan module 330 may be used as a cooling fan module. In the following description, circulating fan modules and cooling fan modules will be described as reference numerals of "310" and "330", respectively.

The food processor according to the present invention includes a drying furnace 100, an intake and exhaust module 200, a fan module assembly 300, a buffer tank 400, a heat exchanger 500, a deodorization module 600, a backflow prevention trap 620, A door 700, and a control unit 800.

The door 700 is located above the drying furnace 100 and the intake and exhaust module 200. The user can open the door 700 and insert the food waste to be processed into the drying oven 100. [ The door 700 is provided with an opening / closing sensor 710 electrically connected to the control unit 800.

The drying furnace (100) is charged with food waste. A heater (not shown) and a crushing / agitating machine (not shown) are located, and the food waste is dried, crushed, and agitated to be crushed and discharged to the outside, thereby producing exhaust gas having high temperature and high humidity and odor.

Drying, grinding, and stirring are performed to treat food waste. Hereinafter, such processes are referred to as "treatment" of food waste.

The intake and exhaust module 200 communicates with the drying furnace 100. One side of the intake and exhaust module 200 communicates with the drying furnace 100 and the exhaust gas generated in the drying furnace 100 flows into the intake and exhaust module 200. The recycle gas, (100).

The other side of the intake and exhaust module 200 communicates with the exhaust gas passage 210 and the recycle gas passage 270 so that the exhaust gas flowing into the intake and exhaust module 200 flows into the exhaust gas passage 210, Recirculation gas flows from the flow path 270.

The fan module assembly 300 includes a circulating fan module 310, a cooling fan module 330, an integral main motor 320, and a flow path switching module 350.

The circulating fan module 310 communicates with the exhaust gas flow path 210 to allow the hot and humid exhaust gas to flow from the intake and exhaust module 200 to the heat exchanger 500.

One side of the cooling fan module 330 communicates with the outside air and the other side communicates with the heat exchanger 500 to supply the outside air to the heat exchanger 500 to perform air cooling type heat exchange. Preferably, the circulating fan module 310 assists in the flow of hot and humid exhaust gases, and the cooling fan module 330 is preferably sealed to each other to assist in the flow of cold outside air.

The flow path switching module 350 accommodates therein a flow path switching motor 360 and a pressure detection sensor 370 which are electrically connected to the control unit 800. The flow path switching module 350 performs a heat exchange operation based on the measured value from the opening / closing detection sensor 710 or the pressure detection sensor 370 by exchanging the exhaust gas, which is driven by the flow path switching motor 360, To the vessel 500 or the buffer tank 400.

The heat exchanger 500 communicates with the exhaust gas passage 210 and the recycle gas passage 270.

The hot and humid exhaust gas supplied through the exhaust gas passage 210 is heat-exchanged inside the heat exchanger 500 to generate condensed water and convert the exhaust gas into a low-temperature recycle gas. For this, external air is introduced by the cooling fan module 370.

The buffer tank 400 collects and discharges the condensed water generated by the heat exchange of the exhaust gas in the heat exchanger 500 to the outside.

The backflow prevention trap 620 is disposed between the buffer tank 400 and the deodorization module 600. In the present invention, in order to prevent the water vapor flowing into the buffer tank 400 from being directly introduced into the deodorization module 600 without being liquefied, water vapor, which is to be subjected to the drainage process in the buffer tank 400, It is possible to prevent the backflow of the liquid. Here, the backflow prevention trap 620 may be a 'U' or 'N' shape trap structure as a temporal example, and any structure capable of blocking the inflow of water vapor into the deodorization module 600 is possible .

As described above, the circulation type food and beverage processing unit using the intake and exhaustion module 200 does not require the filter to be discharged because the exhaust gas having odor is not discharged to the outside, so the manufacturing cost is reduced and the filter replacement is not necessary. . Therefore, the manufacturing cost can be further reduced by adding the fan module assembly according to the present invention, and the total volume of the food processor is reduced, so that it is convenient to be installed at home.

Description of the structure of the fan module assembly 300

2 and 4, the structure of the fan module assembly 300 according to the present invention will be described in detail.

The fan module assembly 300 includes an integrated main motor 320 and two fan modules 310 and 330 interlocked therewith and a flow path switching module 350 communicating with any one of the two fan modules 310 and 330. Each of the fan modules 310 and 330 is referred to as a first fan module 310 and a second fan module 330. [ The integral main motor 320 includes two shafts (a first shaft and a second shaft) for driving the two fan modules 310 and 330. At this time, when two shafts are positioned in the same direction, it is preferable that the two shafts are directed in different directions because they can interfere with the blowing of the respective fans.

The integral main motor 320 may be in the form of a single motor and two shafts as an embodiment. That is, the pair of shafts may be coupled to both sides of the single motor so that the fan modules 310 and 330 are driven at the same or different speeds. On the other hand, the integral type main motor 320 may be in the form of a dual motor and two shafts as another embodiment. That is, each of the separately driven dual motors is coupled to the respective fan modules 310, 330 via a shaft to provide power. As described above, the integral main motor 320 can be disposed between the fan modules 310 and 330 to provide power by means of a single or dual motor as one integrated structure.

Also, it is desirable that the fluid flow by the two fan modules 310, 330 does not interfere with each other. For example, if the hot exhaust gas flows by the first fan module 310 and the cold outside air flows by the second fan module 330, the flow by the first fan module 310, The flow by the module 330 must be distinguished. For this purpose, the first fan module 310 and the second fan module 330 are preferably sealed to each other.

Since the first fan module 310 of the fan module assembly 300 directly flows the exhaust gas from the drying furnace 100, it may adversely affect the sanitary case when it leaks to the outside, It is preferable to make it integrally so as to allow complete sealing with the surroundings.

In addition, since the first fan module 310 circulates the exhaust gas in the drying furnace 100 as a whole, the rotation speed and the power of the second fan module 330 are relatively higher than that of the second fan module 330, This can be avoided in advance.

The flow path switching module 350 includes a casing 352, a flow path switching motor 360 disposed in the casing 352, a pressure detection sensor 370 for measuring the pressure inside the casing 352, And a valve rod 355 coupled to pivotally move the valve rod 355.

The casing 352 communicates with the first fan module 310, the intake and exhaust module 200, the heat exchanger 500, and the buffer tank 400. The casing 352 communicates with the exhaust gas passage 210 through the inlet and communicates with the heat exchanger 500 and the buffer tank 400 through a plurality of outlets, respectively. That is, after the exhaust gas is supplied from the exhaust gas flow path 210 through the single inlet, the plurality of outlets are selectively opened and closed in accordance with the operation of the valve rod 355 interlocked with the flow path switching motor 360, To the heat exchanger (500) or the buffer tank (400).

The control unit 800 is electrically connected to the path switching motor 360 and the pressure sensing sensor 370. When the pressure inside the casing 352 measured by the pressure sensing sensor 370 exceeds a preset reference pressure An electric signal is applied to the flow path switching motor 360 to adjust the position of the valve rod 355. In this case, when the pressure inside the casing 352 rises, the function of the first fan module 310 may not be smooth or may be out of the capacity of the heat exchanger 500. In this case, 352 to flow directly into the buffer tank 400, thereby preventing an increase in pressure.

Description of the operation of the food processor

The flow of the exhaust gas and the recycle gas in the food processor including the fan module assembly 300 according to the present invention will be described with reference to FIGS.

The user opens the door 700 and inserts the food waste to be processed into the drying furnace 100.

The heater inside the drying furnace 100 and the crushing / agitating machine are operated to treat the food, which generates hot and humid exhaust gas.

The exhaust gas generated inside the drying furnace 100 flows through the intake and exhaust module 200 and the exhaust gas flow passage 210 by the operation of the circulation fan module 310 by the integral main motor 320, ).

The pressure sensing sensor 370 in the channel switching module 350 senses the internal pressure due to the exhaust gas inside the casing 352 and transmits it to the control unit 800. The control unit 800 applies an electrical signal to the flow path switching motor 360 so that the valve rod 355 is connected to the buffer tank 400. In the case where the measured pressure in the casing 352 does not exceed the preset reference pressure, Make sure that the facing outlet is closed. On the other hand, when the measured pressure inside the casing 352 exceeds the predetermined reference pressure, the valve rod 355 closes the outlet directed to the heat exchanger 500, so that the exhaust gas in the casing 352 flows into the buffer tank (400). Herein, it can be understood that the reference pressure refers to the maximum pressure that the casing 352 can withstand.

3, reference numeral 230 denotes an exhaust gas purifier that flows into the heat exchanger 500 after the exhaust gas passing through the drying furnace 100, the circulating fan module 310, and the exhaust gas passage 210 flows into the heat exchanger 500 And flows into the drying furnace again as recirculating gas through the recirculating gas flow path 270. Reference numeral 250 denotes a flow of the exhaust gas flowing through the exhaust gas passage 210 to the buffer tank 400 and the deodorization module 600 by the flow path switching module 350.

The exhaust gas in the casing 352 flows to the heat exchanger 500 or the buffer tank 400 according to the sensing of the opening / closing sensor 710 disposed in the door 700 on the upper portion of the intake /

When the food waste disposal apparatus of the present invention is operated, the door 700 is opened when food waste is additionally supplied during operation. In this case, the exhaust gas recirculated through the heat exchanger 500 is discharged to the drying furnace 100, Thereby causing a malodor to the user.

When the door is opened, the opening / closing sensor 710 transmits the door signal to the controller 800. The controller 800 applies an electrical signal to the flow path switching motor 360 so that the valve rod 355 is connected to the heat exchanger 500, Thereby causing the exhaust gas in the casing 352 to flow toward the buffer tank 400 side.

By doing so, the gas recirculated to the drying furnace 100 is blocked through the heat exchanger 500, and the buffer tank 400 and the deodorization module 600 are connected to prevent the generation of odor. When the door 700 is closed, only the heat exchanger 500 is used without using the deodorization module 600. When the door 700 is opened, the buffer tank 400 and the deodorization module 600 are used, The use of the deodorization module 600 can be minimized.

On the other hand, the backflow prevention trap 620 is configured such that the excessive amount of the exhaust gas flows from the casing 352 to the buffer tank 400, so that the steam is not sufficiently liquefied in the buffer tank 400, Blocks moving. The backflow prevention trap 620 serves as a buffer zone for water vapor toward the deodorization module 600, thereby preventing an excessive load from being applied to the deodorization module 600. Through such a process, the deodorization module 600 is provided with an effect of increasing the service life of the deodorization module 600 by allowing the exhaust gas to flow in a state in which steam is sufficiently removed.

When the pressure inside the casing 352 does not exceed the preset reference pressure and the door 700 is closed, by operation of the cooling fan module 330 by the integral main motor 320, Exchanged with the heat exchanger (500) to exchange heat of the high temperature and high humidity exhaust gas. As a result, the hot and humid exhaust gas is converted into a low-temperature recirculating gas, and the condensed water generated in this process is discharged to the outside through the buffer tank 400.

The recycle gas in the heat exchanger 500 flows back into the drying furnace 100 through the recycle gas channel 270 and the intake and exhaust module 200.

On the other hand, when the pressure inside the casing 352 exceeds a predetermined reference pressure or when the door 700 is opened, the valve rod 355 closes the outlet to the heat exchanger 500, The gas flows to the buffer tank 400 side. The exhaust gas, which has been primarily deodorized in the buffer tank 400, is secondarily deodorized in the deodorization module 600.

As described above, the present invention has an advantage that economical efficiency and efficiency can be improved by minimizing the use of the deodorization module by selectively using the deodorization module based on the opening of the door and the internal pressure of the casing.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that numerous modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims. And equivalents should also be considered to be within the scope of the present invention.

100: drying furnace
200: Intake and Exhaust Module
210: Exhaust gas flow
270: Recirculating gas channel
300: fan module assembly
310: circulating fan module
320: Main motor
330: Cooling fan module
350: Euro conversion module
352: casing
355: Valve rod
360: Euro switching motor
370: Pressure sensor
400: Buffer tank
500: heat exchanger
600: deodorization module
700: Door
710: Opening / closing sensor
800:

Claims (17)

Drying furnace;
An inlet / outlet module communicating with the drying furnace;
A flow path switching module communicating with the intake and exhaust module and regulating a flow direction of the exhaust gas discharged from the drying furnace and flowing through the intake and exhaust module;
A heat exchanger connected to the flow path switching module;
A buffer tank communicating with the flow path switching module;
An opening / closing sensor for detecting opening / closing of a door disposed above the intake / discharge module; And
A control unit electrically connecting the flow path switching module and the opening / closing detection sensor;
/ RTI >
Wherein the control unit causes the flow path switching module to operate according to a measurement value from the open / close detection sensor, thereby causing the discharge gas to flow to the heat exchanger or the buffer tank.
Food processor.
Drying furnace;
An inlet / outlet module communicating with the drying furnace;
A flow path switching module communicating with the intake and exhaust module and regulating a flow direction of the exhaust gas discharged from the drying furnace and flowing through the intake and exhaust module;
A heat exchanger connected to the flow path switching module;
A buffer tank communicating with the flow path switching module;
A pressure sensing sensor disposed in the flow path switching module; And
A control unit electrically connected to the flow path switching module and the pressure sensor;
/ RTI >
Wherein the control unit causes the flow path switching module to operate according to a measurement value from the pressure sensor to cause the discharge gas to flow to the heat exchanger or the buffer tank.
Food processor.
3. The method according to claim 1 or 2,
Wherein said channel switching module is in communication with a fan module assembly.
Food processor.
3. The method according to claim 1 or 2,
And the buffer tank is in communication with the heat exchanger.
The method of claim 3,
The fan module assembly comprising:
A first fan module and a second fan module having mutually different functions; And
And a motor disposed between the first fan module and the second fan module,
Wherein one of the first fan module and the second fan module communicates with the flow path switching module.
Food processor.
3. The method according to claim 1 or 2,
The channel switching module includes:
Euro switching motor; And
A valve rod pivotally coupled to the flow path switching motor;
/ RTI >
Wherein the control unit controls the position of the valve rod by driving the flow path switching motor in accordance with the measured value.
Food processor.
3. The method according to claim 1 or 2,
Characterized in that a single inlet and a plurality of outlets are formed in the channel switching module.
Food processor.
6. The method of claim 5,
Characterized in that the first fan module interlocks with a first shaft of the motor and the second fan module interlocks with a second shaft of the motor which is positioned against the first shaft relative to the motor.
Food processor.
6. The method of claim 5,
Wherein the first fan module and the second fan module are sealed to each other.
Food processor. 6. The method of claim 5,
The first fan module is a circulating fan, and
And the second fan module is a cooling fan.
Food processor.
3. The method according to claim 1 or 2,
The food processor may further comprise:
Further comprising a backflow prevention trap disposed between the buffer tank and the deodorization module connected to the buffer tank, wherein the backflow prevention trap prevents inflow of water vapor from the buffer tank to the deodorization module.
Food processor.
6. The method of claim 5,
Characterized in that the motor comprises a single motor or a dual motor.
Food processor.
6. The method of claim 5,
Wherein the first fan module is disposed on the exhaust gas flow path, and the second fan module communicates with the outside air.
Food processor.
(a) flowing the exhaust gas produced in the drying furnace to the intake and exhaust module;
(b) flowing the exhaust gas flowing into the intake and exhaust module to a flow path switching module;
(c) operating the channel switching module in accordance with a measurement value of an opening / closing sensor for detecting whether the door disposed at the upper portion of the inlet / outlet module is opened or closed; And
(d) selectively flowing into the heat exchanger and the buffer tank in which the exhaust gas is connected to the flow path switching module according to the operation of the flow path switching module,
Characterized in that the exhaust gas is re-introduced into the drying furnace,
Method of circulating exhaust gas treatment.
(a) flowing the exhaust gas produced in the drying furnace to the intake and exhaust module;
(b) flowing the exhaust gas flowing into the intake and exhaust module to a flow path switching module;
(c) operating the channel switching module according to a measurement value from a pressure sensor disposed in the channel switching module;
(d) selectively flowing into the heat exchanger and the buffer tank in which the exhaust gas is connected to the flow path switching module according to the operation of the flow path switching module,
Characterized in that the exhaust gas is re-introduced into the drying furnace,
Method of circulating exhaust gas treatment.
16. The method according to claim 14 or 15,
After the step (d)
(e) the exhaust gas flowing into the heat exchanger from the flow path switching module is heat-exchanged with a cooling fan operated by a motor to be converted into a recirculating gas;
(f) flowing the recycle gas into the intake and exhaust module; And
(g) flowing the recycle gas, which has flowed to the intake and exhaust module, into the drying furnace.
Method of circulating exhaust gas treatment.
16. The method according to claim 14 or 15,
The step (b)
The exhaust gas flowing into the intake and exhaust module flows into an exhaust gas passage by a circulating fan; And
Flowing the exhaust gas flowing into the exhaust gas passage into the heat exchanger or the buffer tank by the circulation fan;
≪ / RTI >
Method of circulating exhaust gas treatment.

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