KR20110069311A - Apparatus for exhausing odor of food treater - Google Patents

Abstract

PURPOSE: An air exhausting apparatus of a food processor is provided to control the operation of a ventilation fan by the degree of bad smell, and to reduce the generation of noise from the ventilation fan. CONSTITUTION: An air exhausting apparatus of a food processor comprises the following steps: a ventilation fan(140) discharging bad smell from a drying furnace; an exhaust pipe(150) connected to the drying furnace, for flowing the bad smell passed through the ventilation fan to the outside of the food processor; a bad smell unit(160) detecting the degree of the bad smell by being installed on the exhaust pipe; and a controller for controlling the operation of the ventilation fan.

Description

Apparatus for exhausing odor of food treater

The present invention relates to an exhaust device for a food processor, and more particularly, to an exhaust device capable of controlling the driving of the exhaust fan in accordance with the degree of odor inside the drying of the food processor.

Since food wastes contain a lot of water, odors may be generated due to volume, weight increase and leachate during treatment. Therefore, food wastes are collected and disposed of after being discharged by waiting for a certain time in the strainer. .

However, it takes a long time to dehydrate the water from the food waste as described above, and also, such as sink bowl type food processor, when the water is continuously discharged from the sink, such natural dehydration is virtually difficult. In addition, there is a problem in that the ambient pollution due to odor occurs while waiting for natural dehydration. To prevent this, various methods for treating food waste have been developed.

Methods of treating food waste include a method of fermenting food waste by using microorganisms to compost or decompose it, and a method of physically compressing or pulverizing and drying.

The method of using the microorganism in the above has the trouble of having to separately purchase and manage the pharmaceutical properties of the food and the purchase, storage, maintenance conditions of the microorganism, and moreover, there is an unrealistic disadvantage in Korean food containing a lot of salt. Therefore, as a method of treating food waste, a drying process is mainstream, and various forms of development and application have been made.

These food waste disposal devices may also be in the form of independent machines, or they may be designed to be directly connected to the sink to dispose of food waste directly in the sink.

The food waste disposal device is largely connected with a food inlet that can inject food into the food processor, a food inlet that is connected to the food inlet, a transport unit for transferring the injected food, a drying furnace for drying food and a odor generated in the drying furnace. An exhaust device.

The exhaust device drives the exhaust fan to remove odors in the drying furnace. When the food waste treatment device is powered, the exhaust fan of the exhaust device is always driven.

However, even when the odor inside of the drying is discharged and the odor removal effect cannot be generated by the operation of the exhaust fan, when the exhaust fan is driven, unnecessary noise of the product is generated and standby power is consumed.

An object of the present invention for solving the above problems is to provide an exhaust device of a food processor that can control the operation of the exhaust fan according to the degree of odor.

In addition, an object of the present invention is to reduce the generation of noise due to the operation of the exhaust fan continued through the control of the driving of the exhaust fan, and to prevent unnecessary power consumption.

The technical problem in the exhaust device of the food processor, an exhaust fan for discharging the odor inside the drying furnace, the exhaust pipe connected to the drying furnace to communicate the odor passing through the exhaust fan to the outside of the food processor, inside the exhaust pipe A odor detection unit installed to detect the odor level of the exhaust pipe, and a controller capable of controlling the driving of the exhaust fan through a pulse width control (PWM) according to the odor level of the exhaust pipe detected by the odor detection unit. It is achieved by the exhaust device of the food processor, characterized in that.

The food processor may be operated in an operation mode and a standby mode, and the controller may control the odor detection unit to detect the odor level of the exhaust pipe only in the standby mode.

Preferably, the control unit drives the exhaust fan 100% in the operation mode.

The controller may be configured to perform 50% driving pulse width control on the exhaust fan when the degree of odor detected by the odor detection unit in the standby mode is equal to or greater than a first predetermined reference value.

The controller may control pulse width of 10% driving to the exhaust fan when the degree of odor detected by the odor detection unit in the standby mode is less than a first predetermined reference value or more than a second predetermined reference value. It is preferable to characterize.

The controller may be configured to control driving of the exhaust fan when the degree of odor detected by the odor detection unit in the standby mode is less than a second predetermined reference.

The controller may be configured to control the odor detection unit to detect the odor level of the exhaust pipe when a predetermined time elapses after the driving of the exhaust fan is stopped in the standby mode.

The odor detection unit may detect any one or more concentrations selected from the group consisting of volatile organic compounds (Volatile Organic Compounds), carbon dioxide, other ethyl acetate, hydrogen sulfide, ethanol, butane, hydrogen, and tobacco smoke in the exhaust pipe. It is preferable to set it as.

As described above, according to the present invention, it is possible to provide an exhaust device of a food processor capable of controlling the driving of the exhaust fan according to the degree of odor.

In addition, according to the present invention it is possible to reduce the generation of noise due to the operation of the exhaust fan continued through the control of the drive of the exhaust fan, and to prevent unnecessary power consumption.

According to the present invention, there is an effect of reducing power and increasing durability by not detecting a bad smell when the food processor is in the standby mode and not detecting the bad smell in the operation mode. In addition, it helps to increase the life of expensive odor detection sensor in the odor detection unit sensitive to various gases.

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings will be described in detail the exhaust device and the exhaust method of the food waste processor according to an embodiment of the present invention.

Structure of food processor

1 is a view showing an embodiment of a food processor including an exhaust device according to the present invention, Figure 2 is a perspective view showing another embodiment of a food processor including an exhaust device according to the present invention.

Although the description on the drawings is for the think-ball type food processor, the feature of the present invention is not limited to only the sink-ball type, but may be applied to any device capable of processing food such as a free standing type.

The food processor including the exhaust device according to the present invention is connected to the inlet 110 and the inlet 110 for injecting food into the food processor, the transport unit 120 for transporting the input food, and drying the food. And a drying furnace 130 and an exhaust device 100, and the exhaust device 100 includes an exhaust fan 140, an exhaust pipe 150, an odor detector 160, and a controller (not shown).

The inlet 110 is where food waste enters from a sink (not shown) of the sink. When the user inputs food from the sink, it enters into the transfer part 120 through the inlet 110.

The transfer unit 120 separates and discharges some water from the food waste and transfers the food waste to the drying furnace 130. The transfer part 120 may be mounted inside the housing in consideration of appearance and safety to be blocked from the outside.

In the drying furnace 130, the remaining moisture of the food waste is additionally removed by applying high heat, and the drying furnace 130 may also be blocked from the outside in appearance. Food waste after the drying process in the drying furnace 130 may be stored in the recovery box.

It is finely divided in the stirring / crushing part 132 of the drying furnace 130. The stirring / crushing unit 132 agitates and / or grinds the food waste using a blade device provided with power.

The drying furnace 130 may further include an intake fan 134. The intake fan 134 serves to introduce external air into the main body, that is, into the housing. In addition, the intake fan 134 may generate a flow of air inside the housing, and may help to discharge the water-containing odor gas generated during food waste treatment toward the exhaust device 100.

Structure of Exhaust System of Food Processor

The exhaust device 100 of the food processor includes an exhaust fan 140, an exhaust pipe 150, an odor detector 160, and a controller (not shown).

Exhaust fan 140 serves to transfer the odor gas inside the drying furnace to the exhaust pipe 150.

The exhaust pipe 150 is connected to the drying furnace 130 to communicate the odor gas passed through the exhaust fan 140 with the outside. The odor gas passing through the exhaust pipe 150 may be connected to a filter (not shown) and the like, and may further remove moisture and odor from the odor gas containing moisture in the filter, and may be discharged to the outside of the food processor.

Odor detection unit 160 is installed inside the exhaust pipe 150 to detect the degree of odor of the exhaust pipe. Odor detection unit 160 may be composed of a variety of odor detection sensors. The drying furnace 130 is equipped with a heater, which serves to evaporate moisture contained in the food waste by heating and drying the stirred and pulverized food waste. The temperature in the drying furnace 130 may rise by the operation of the heater, and is typically designed to rise to about 150 ^° C. Therefore, since it is difficult and expensive to implement a odor detection sensor that can withstand high temperatures, the odor detection sensor is mounted inside the exhaust pipe 150 instead of the drying furnace 130.

Odor detection unit 160 is volatile organic compounds (VOC), carbon dioxide, other ethyl acetate, hydrogen sulfide, ethanol (Ethanol), butane (Butane), hydrogen (Hydrogen), cigarette smoke (Cigarette Smoke) The concentration of various gases can be checked to determine the degree of odor. Among these, VOC is a general term for organic compounds that evaporate easily due to high vapor pressure, and when they exist in the atmosphere, they cause photochemical oxidation reactions with nitrogen oxides (NOx) by sunlight to increase ozone concentrations on the surface, which causes smog phenomenon. It is a representative source of odor gas.

Odor detection unit 160 is composed of a odor detection sensor, the odor detection sensor is any one of a metal oxide semiconductor sensor, a conductive polymer sensor, a chemical reaction sensor, a light sensor, etc., the electrical conductivity or resistance value changes according to the concentration of the odor gas Can be. The malodorous gas reaching the malodor detecting unit 160 changes the electrical signal value of the malodor detecting unit 160 according to the substance and the concentration, and the controller analyzes this to determine whether the calculated result is greater than or equal to a predetermined reference value. .

The controller may control the driving of the exhaust fan 140 according to the degree of odor detected by the odor detector 160. The controller may stop the driving of the exhaust fan 140 when the sensed odor is less than the preset level, or control the pulse width control (PWM) of the exhaust fan 140 to control the driving degree of the exhaust fan 140. I can regulate it. In addition, the controller may control the odor detection unit 160 to detect the odor after a preset time after the driving of the exhaust fan 140 is stopped, thereby controlling the driving of the exhaust fan 140 according to the detected odor level. have. The concept of the pulse width control will be described later with reference to the operation of the controller.

The food processor is composed of an "operation mode" for stirring and pulverizing the injected food and a "waiting mode" for waiting until the next food is finished after the food is processed.

The control unit controls the odor detection unit 160 to detect the odor only in the standby mode. In the operation mode, the odor gas is naturally discharged according to food processing, so the odor detection sensor always drives the exhaust fan 140 at 100% without separately detecting the odor. In the standby mode, the controller detects the odor detected from the odor detection unit 160. The exhaust fan 140 is driven according to the degree.

Controlling the exhaust fan drive in the standby mode, when the power is turned on in the conventional food processor, the exhaust fan is continuously driven and the odor inside the drying furnace is discharged to cause the odor removal effect by the operation of the exhaust fan. Even if it is impossible, there is a problem that unnecessary noise of the product is generated when the exhaust fan is driven, and standby power is consumed.

Operation of the Control Unit of the Exhaust System of the Food Waste Processor

The controller of the exhaust device 100 of the food processor according to the embodiment of the present invention determines whether the degree of odor detected by the odor detector 160 is less than a preset level. At this time, the predetermined level is a level at which it is determined that it is unnecessary to continuously drive the exhaust fan 140 by discharging the odor gas to some extent, and may be variously set according to the designer.

If the degree of odor in the exhaust pipe 150 is greater than or equal to a predetermined level, the exhaust fan 140 is continuously driven as in a conventional food treatment system, and if it is less than the predetermined level, the driving of the exhaust fan 140 is stopped or the exhaust fan ( 140) pulse width control. Pulse width control is to control the on / off of the signal by changing the width of the pulse. For example, in the case of 50% driving pulse width control, only 50% of the entire signal is output ( ON state) and 50% is turned off (OFF state).

The control unit of the exhaust device 100 of the food waste processor according to another embodiment of the present invention divides the degree of odor into a plurality of stages, and performs different pulse width control for each stage. The most severe stage of the odor drive the exhaust fan 140 more.

For example, the control unit divides the odor level into three stages, and controls the pulse width of 50% driving to the exhaust fan 140 in the first stage where the odor level is most severe, and 10% to the exhaust fan 140 in the second stage. The pulse width control of the driving is performed, and the driving of the exhaust fan 140 can be stopped in the three stages with the lowest odor.

Explanation of Exhaust Method of Food Waste Processor

3 is a flowchart illustrating a method of evacuating a food waste processor according to the present invention.

In step 310, the exhaust fan is driven to discharge the odor of the food waste processed in the drying furnace to the exhaust pipe. When the exhaust fan is driven, odor gas containing moisture in the drying furnace is transferred to the exhaust pipe.

In step 320, the degree of odor inside the exhaust pipe is detected. At this time, only when the food processor is in the standby mode, and operates in the exhaust fan 100% without detecting the odor level in the operation mode. Odor levels include concentrations of various gases such as volatile organic compounds (VOC), carbon dioxide, other ethyl acetate, hydrogen sulfide, ethanol, butane, hydrogen, cigarette smoke, etc. Can be detected by checking

In operation 330, the driving of the exhaust fan is controlled according to the detected degree of odor. When the sensed odor is less than the predetermined level, the exhaust fan may be driven by stopping the driving of the exhaust fan or controlling the width of the exhaust fan. Pulse width control is to control the on / off of a signal by changing the width of the pulse, and the degree of pulse width control can be varied according to the designer's setting. Pulse-Width Modulation (PWM) is a method of digitally encoding analog signals, which can reduce system cost and power. By stopping the exhaust fan driving or controlling the pulse width, the exhaust fan is continuously driven even when the odor inside the oven is discharged to some extent, thereby preventing the problem of power consumption.

4 is a flowchart illustrating a method of evacuating a food processor according to an embodiment of the present invention.

In operation 410, the food processor determines whether the food processor is in operation to determine whether it is in an operation mode or a standby mode. At this time, when the food processor is in the operation mode, the exhaust fan is driven 100% to discharge the odor of the food waste processed in the drying furnace to the exhaust pipe without separately detecting the odor in step 415. If the food processor is in the standby mode, step 420 detects the degree of odor inside the exhaust pipe.

That is, when the food processor is in the operation mode, the degree of odor inside the exhaust pipe will be very severe. Therefore, it is preferable to drive the exhaust fan 100% without detecting it. This is because there is an effect of reducing power and increasing durability.

In operation 430, it is determined whether the degree of odor detected in operation 420 is less than the first criterion. If it is more than the first criterion, it is a range deemed necessary for continuous odor emission, and can be set to various values according to the designer. If the detected degree of odor is greater than or equal to the first criterion, the process proceeds to step 440.

In step 440, 50% driving pulse width control is performed on the exhaust fan. In the description related to FIG. 4, the 50% pulse width control is taken as an example when the first reference value is greater than or equal to the example. However, various values may be set.

In step 450, it is determined whether the detected degree of odor falls below the second criterion. If it is greater than or equal to the second criterion, step 460 is performed. If it is less than the second criterion, step 470 is performed. The second criterion is a value having a lower odor level than the first criterion and can be variously designed.

In operation 460, when the detected degree of odor is greater than or equal to the second criterion and less than the first criterion, pulse width control of 10% driving is performed to the exhaust fan. In the present embodiment, 10% pulse width control is taken as an example when the second reference is greater than or less than the first reference, but various values can be set.

In operation 470, the driving of the exhaust fan is stopped when the detected degree of odor falls below the second criterion.

When the preset time elapses after the driving of the exhaust fan is stopped, the exhaust fan may be driven according to the sensed odor level by continuously detecting the odor inside the exhaust pipe. When a certain time elapses, the odor is sensed again, and if the second reference is greater than or equal to the first criterion, the pulse width control of 10% driving is performed on the exhaust fan, and if the first criterion is greater than 50% driving pulse width control is performed. In addition, if it is still less than the second reference, while keeping the driving of the exhaust fan stopped, the odor is detected again after a certain time.

While preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments. That is, those skilled in the art to which the present invention pertains can make many changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are possible. Equivalents should be considered to be within the scope of the present invention.

1 is a view showing an embodiment of a food processor including an exhaust device according to the present invention.

2 is a perspective view showing another embodiment of a food processor including an exhaust device according to the present invention.

3 is a flowchart illustrating a method of evacuating a food waste processor according to the present invention.

4 is a flowchart illustrating a method of evacuating a food processor according to an embodiment of the present invention.

Claims (8)

In the exhaust device of the food processor, An exhaust fan for discharging odor inside the drying unit; An exhaust pipe connected to the drying furnace and communicating odor passing through the exhaust fan to the outside of the food processor; Odor detection unit is installed inside the exhaust pipe to detect the degree of odor of the exhaust pipe; And And a controller for controlling the driving of the exhaust fan through a pulse width control (PWM) according to the degree of odor of the exhaust pipe detected by the odor detector. Exhaust system of food processor. The method of claim 1, The food processor is operable in an operation mode and a standby mode, The control unit, Characterized in that the odor detection unit controls to detect the odor of the exhaust pipe only in the standby mode, Exhaust system of food processor. The method of claim 2, The control unit, Characterized in that for driving the exhaust fan 100% in the operation mode, Exhaust system of food processor. The method of claim 2, The control unit, When the degree of odor detected by the odor detection unit in the standby mode is greater than or equal to a first predetermined reference, it is possible to control the pulse width of the driving fan 50%, Exhaust system of food processor. 5. The method of claim 4, The control unit, When the odor level detected by the odor detection unit in the standby mode is less than the first preset reference, and more than the second preset reference, it is possible to control the pulse width of the 10% drive to the exhaust fan, Exhaust system of food processor. The method of claim 5, The control unit, When the degree of odor detected by the odor detection unit in the standby mode is less than a second preset reference, it can be controlled to stop the driving of the exhaust fan, Exhaust system of food processor. The method of claim 6, The control unit, Characterized in that the odor detection unit detects the odor of the exhaust pipe when a predetermined time elapses after the driving of the exhaust fan is stopped in the standby mode, Exhaust system of food processor. The method according to any one of claims 1 to 7, The odor detection unit, Characterized in that any one or more concentrations selected from the group consisting of volatile organic compounds (Volatile Organic Compounds), carbon dioxide, other ethyl acetate, hydrogen sulfide, ethanol, butane, hydrogen, tobacco smoke in the exhaust pipe, Exhaust system of food processor.

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