KR101446807B1 - Method of controlling a valve - Google Patents

Abstract

The present invention relates to a method of controlling a valve for opening and closing an outlet provided in a drying furnace, and an object of the present invention is to provide a valve control Method. To this end, the present invention provides a valve control method applied to a food garbage disposal apparatus including a drum portion having a discharge port, a control portion, and a discharge portion for opening and closing the discharge port, wherein when a signal indicating completion of drying in the drum portion is received An opening start step in which the control unit rotates the valve of the discharge unit in the open forward direction; Wherein the control unit controls the valve to rotate in the open direction and changes the rotational direction of the valve according to the rotational state of the valve so that the valve can be continuously rotated in a direction to open the outlet, ; And an open middle stage in which the control unit causes the valve to open the outlet by changing the rotational direction of the valve according to the rotational state of the valve after the opening initial stage is advanced.

Food waste disposal device, dryer, drum part, outlet, valve

Description

[0001] METHOD OF CONTROLLING A VALVE [0002]

The present invention relates to a method of controlling a garbage disposal apparatus, and more particularly, to a method of controlling a valve that opens and closes an outlet provided in a drying furnace.

Generally, there are food waste processing methods such as a fermentation treatment method, an incineration treatment method, a method of recycling to feed and fertilizer (compost), a method of landfilling into soil, and the like, As well as various side effects such as odor and inconvenience due to collection, transportation or storage, and serious environmental problems such as environmental pollution.

Therefore, in order to efficiently suppress the generation of food waste and to recycle it, development of a household food garbage disposal apparatus capable of solving such problems is urgently required.

Generally, a device for treating food waste connected to a household sink can remove moisture from food waste through a series of processes such as dehydration, cutting and drying, and reduce the volume of the food waste, thereby greatly reducing the amount of the waste.

A device for treating food waste attached to a conventional sink includes a feeding port into which food waste is fed, a dehydration / cutting section for cutting and chopping the food waste by dewatering by compressing the food waste, a feeding section for moving the dehydrated and cut food waste to one side, A drying oven for drying the food wastes by removing water by high temperature while uniformly turning over and dispersing the food wastes dewatered and cut by the rotating blades rotated by the rotary wings, and a discharge chamber for discharging and storing the dried food wastes do.

On the other hand, the food waste whose residual moisture has been completely removed from the inside of the drying furnace due to high temperature is discharged through the outlet formed through the bottom surface of the drying furnace.

A structure for opening and closing the discharge port can be variously formed. Recently, a method of discharging the food waste by opening and closing the discharge port by rotating a semi-cylindrical valve (hereinafter, simply referred to as valve) Is being developed.

That is, the food waste flows into the drying furnace in a state where the convex portion of the valve is placed facing the inside of the drying furnace and the drying process is performed. When the drying process is completed, the valve is rotated by 90 degrees to open half of the discharge port, Can be discharged.

When the food garbage discharge is completed, the valve is rotated 90 degrees to its original position, so that the discharge port is closed.

Meanwhile, when the valve is opened or closed as described above, if the food garbage is trapped between the valve and the discharge port, the valve can not be normally rotated. At this time, the controller of the food garbage disposal apparatus outputs an error message, To manually remove food waste.

However, although the food garbage sandwiched between the valve and the discharge port as described above includes some food garbage that can be easily removed by rotating the valve several times in the leftward and rightward direction, the control unit applied to the conventional food garbage disposal apparatus has a separate function It will not be able to execute and will only print an error message.

That is, the conventional food garbage disposal apparatus as described above has a problem that food waste is trapped between the valve and the discharge port, so that no solution can be provided when the valve is not rotated normally.

An object of the present invention is to provide a valve control method capable of controlling a rotating direction of a valve that opens and closes an outlet formed in a drying furnace of a food garbage disposal apparatus.

According to an aspect of the present invention, there is provided a method of controlling a valve for a food waste treatment apparatus including a drum portion having a discharge port, a control portion, and a discharge portion for opening and closing the discharge port, An opening start step in which the control unit rotates the valve of the discharge unit in the open forward direction; Wherein the control unit controls the valve to rotate in the open direction and changes the rotational direction of the valve according to the rotational state of the valve so that the valve can be continuously rotated in a direction to open the outlet, ; And an open middle stage in which the control unit causes the valve to open the outlet by changing the rotational direction of the valve according to the rotational state of the valve after the opening initial stage is advanced.

The present invention controls the rotation direction of the valve for opening and closing the discharge port formed in the drying path according to the rotation state of the valve so that the operation of the food waste is not interrupted even when the valve can not normally open or close the discharge port by the food waste It has excellent effect.

The above objects, features, and 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. Hereinafter, a valve control method according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an embodiment of a drying furnace of a garbage disposal apparatus to which the present invention is applied, and is an exploded perspective view of a drying furnace having a discharge section 180. FIG.

As shown in FIG. 1, the drying furnace 100 of the food waste disposal apparatus to which the present invention is applied includes an inlet 112 through which dehydrated food waste is introduced and an outlet 114 through which dried food waste is discharged A drum unit 110, a heater unit 140 provided on the body surface of the drum unit for drying the food waste by providing a high temperature to the internal space of the drum unit when power is applied thereto, A discharge unit 180 for controlling the opening and closing of the discharge port 114 according to the drying state of the discharge port 114 and a control unit (not shown) for controlling the driving of the heater unit and the discharge unit. A discharge chamber (not shown) for collecting food waste discharged from the discharge port 114 may be provided at the lower end of the drying furnace 100. As described above, the drying furnace to which the present invention is applied is for opening and closing the discharge port formed in the drum portion by using the discharge portion 180 composed of a valve, and the control portion controls the discharge portion. The drying furnace to which the present invention is applied has the same structure and function as the general drying furnace except that the discharge port is formed on the lower surface of the drum portion and the discharge portion constituted by the valve is controlled by the control portion. And a discharge unit for opening and closing the discharge port will be described below.

The drum 110 may include an inlet 112 formed on the upper surface of the drum body 110 and a discharge hole 114 formed on the lower side surface of the drum body 110. The drum 110 may include an inner space Like receiving member. The discharge port 114 is provided at the lower side of the drum body 110 to discharge the completely dried food waste by removing moisture by the heat source of the plateau in the inner space of the drum 110, And can be variously formed.

The discharge portion 180 is provided on the lower surface of the discharge port 114. The discharge portion 180 has a cylindrical support shaft 184 at both ends thereof and a semi-cylindrical valve 184 having a diameter larger than that of the support shaft 184 at its center. An ejector 183 provided with a valve (or a valve having a semi-elliptic column shape) 185 (hereinafter, simply referred to as a valve), a discharge port 183 attached to the lower surface of the discharge port 114, Shaped discharge port support portion 181 provided along the axial direction of the drying furnace 100 and provided with a hole corresponding to the discharge port 114 at a center portion thereof and having a first groove 182 for receiving the discharge port 184, And a rectangular pillar-shaped fixing bracket 187 attached to both ends of the discharge port support portion 181 and having a second groove 188 at a central longitudinal portion thereof for receiving the support shaft 184. The operation of the discharge unit 180 is based on a signal from a control unit (not shown) when the food waste is dried in the drying furnace 100. Normally, the discharge unit 183 of the discharge unit 180 closes the discharge port 114. However, if the food waste is dried, the control unit operates the discharge unit 183 and rotates the discharge unit by a predetermined angle. That is, since the valve 185 of the discharger 183 has a semi-cylindrical shape, the discharge port 114 is closed when it is positioned parallel to the periphery of the discharge port 114, but the discharge port 114 is opened when the valve is rotated by a certain angle. When the discharge port 114 is opened, the food waste moved by the rotation operation of the stirring screw (not shown) is discharged to the outside through the discharge port 114. In this case, since the valve 185 is formed with sharp edges at both ends, the dried food waste can be easily cut and discharged to the outside. As a result, it is possible to prevent the decay of the food waste by preventing the accumulation of the food waste, thereby preventing the contamination around the drying furnace and preventing damage to the drying furnace. The discharge unit 180 includes a switch 189 for sensing the rotation state of the support shaft 184 or the valve 185. The support shaft or valve is provided with a protruding unit 186 are formed. That is, as the support shaft or the valve is rotated, the protrusion also rotates to change the state of the switch to a high state or a low state, and the control unit controls the rotation of the support shaft or the valve By controlling the direction, the valve can normally open and close the outlet.

Fig. 2 is an exemplary view showing a state in which the valve shown in Fig. 1 opens and closes the discharge port.

First, in the state in which the convex portion of the semi-cylindrical valve 185 is directed to the inside of the drum portion 110 as shown in (a), the discharge port 114 is closed by the valve, so that the food waste can be discharged to the discharge port none. In this state, the food garbage disposal apparatus uses various methods such as drying and crushing to dry the food garbage.

When the drying process for the food garbage is completed, the control unit receives a signal indicating that the drying process has been completed through various paths, and at this time, the valve is rotated clockwise or counterclockwise as shown in (b).

When the valve is rotated in the vertical direction with respect to the discharge port as shown in (c), a part of the discharge port is opened and the food waste can be discharged to the outside through the opened discharge port have.

When food garbage is discharged, the control unit reverses the above process, thereby closing the discharge port.

The present invention is characterized in that the control unit can rotate the valve in various directions according to the state of the valve instead of rotating the valve only in the predetermined opening direction or closing direction as described above. Will be described in detail with reference to FIG.

On the other hand, the present invention requires that the control unit monitors the rotational state of the valve in order to rotate the valve in various directions as described above. To this end, the switch is in the low (low) ), High (high) and low (low) states.

For example, if the valve is changed from a state of 0 degrees ((a) to 90 degrees (c)) with respect to a horizontal plane, the outlet is changed from the closed state to the open state, (A)) to 90 ° (a), the outlet is changed from the open state to the closed state.

In the meantime, the present invention divides the 90 ° opening / closing angle of the outlet into three areas so that the switch can detect the state of the valve. For example, the protruder 186 and the switch 189 may be configured such that the switch is in a low state when the valve is placed at an angle of 0 ° to 20 ° with respect to the horizontal or vertical plane, as shown in (b) And the switch is in a high state when the valve is placed at an angle of 20 ° to 70 ° with respect to the horizontal or vertical plane and the switch is at a low angle when the valve is placed at an angle of 70 ° to 90 ° with respect to the horizontal plane or vertical plane, quot; low " state. The angles are used to distinguish the operation state of the valve, and can be variously set in consideration of the configuration of the switch and the protrusion. In addition, the present invention can divide the 360 ° region in which the valve is rotatable into four 90 ° regions, and divide the region into three regions as described above.

Hereinafter, a method of controlling a valve according to the present invention, particularly, a method of converting a valve from a closed state to an open state will be described in detail with reference to Figs. 3 to 7.

3 is a flowchart illustrating a process of converting a valve from a closed state to an open state in a valve control method according to an embodiment of the present invention.

When the food garbage is fed into the food garbage disposal apparatus (210), the food waste is dried, as shown in FIG. 1, and when a signal indicating that the food garbage drying process is completed is received (220 ), The control unit drives the valve driving motor in the direction in which the valve is opened (hereinafter, simply referred to as "open forward direction"), thereby rotating the valve in the open forward direction (230).

After the valve is rotated in the open and forward direction, the controller proceeds to the valve opening initialization process so that the valve can be normally rotated in the direction of opening the outlet (300). A detailed description of the valve opening initial process will be described in detail with reference to Figs. 4 and 5. Fig.

After the initial opening process, the control unit proceeds to the open middle period so that the valve can normally open the outlet (400). The details of the open middle period process will be described in detail with reference to Figs. 6 and 7. Fig.

When the outlet is completely opened by the open middle period, the process of converting the valve from the closed state to the open state is terminated (500) by discharging the food waste from the drying furnace (500).

FIG. 4 is a flowchart illustrating an opening procedure 300 of the valve control method shown in FIG. 3 in detail. FIG. 5 is a view showing the state of the valve in each process shown in FIG. 4, and shows the state of the valve that opens the discharge port.

The control unit controls the valve driving motor so as to rotate the valve in the open forward direction and then determines whether the switch has changed from the low state to the high state for a predetermined time (10 to 20 seconds) (302) during the first monitoring process. That is, as shown in FIG. 2 (b), the switch will be in the low state between 0 and 20, and the state will change to the high state from the moment when it exceeds 20, Lt; RTI ID = 0.0 > 20. ≪ / RTI >

As a result of the first monitoring, if the switch state is changed, it means that the valve is normally rotated beyond 20 °, and the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) ). Here, the reason why the valve is continuously rotated for a predetermined time is to allow the valve to be rotated by more than 20 degrees to 70 degrees. However, as a result of the first monitoring, if the switch state has not been changed, it means that the valve has not been rotated by more than 20 degrees due to the food waste, as shown in FIG. 5A, The valve is rotated in a direction opposite to the open forward direction (hereinafter, simply referred to as 'opening direction') as shown in (b) of FIG.

The control unit controls the valve driving motor so that the valve is rotated in the direction of the opening portion and then performs a second monitoring for monitoring the switch for a predetermined time (10 to 20 seconds) whether the switch has changed from a low state to a high state (306).

As a result of the second monitoring, if the switch state has changed, the control unit continuously rotates the valve for a preset time (2 to 5 seconds) (312), and performs the open middle step (400). However, as a result of the second monitoring, if the switch state has not been changed, it means that the valve is caught by the food waste and does not rotate more than 20 degrees toward the opening portion as shown in Fig. 5 (c) So that the valve is opened and rotated in the forward direction (308).

The control unit rotates the valve in the open forward direction, and then repeats the first monitoring process 302 again.

On the other hand, when the control unit counts the number of times the valve is rotated in the open forward direction by the second monitoring result and exceeds the preset number of times (3 to 4), the control unit outputs the error message without repeating the above- The entire process is terminated (310). That is, the fact that the valve is not normally rotated even by the repeating process as described above means that the valve has reached a state where it is difficult to further rotate by the food waste or the like, so that the control unit informs the user of this state. After confirming the error message, the user can take another action, that is, remove the food waste adhered to the discharge port, so that the valve can be operated normally again.

FIG. 6 is a flow chart showing an embodiment of the valve opening control method shown in FIG. 3 in detail. 7 is a diagram illustrating an example of a state of a valve in each process described with reference to FIG. 6, and shows states of a valve that opens an outlet.

The control unit determines whether the switch is changed from a high state to a low state for a predetermined time period (10 to 20 seconds) in a state where the valve is continuously rotated (312) And performs a third monitoring process for monitoring (402). That is, as the valve is rotated from the horizontal plane by more than 20 degrees and the switch is changed from low to high state through the initial opening process, the switch is changed from the high state to the low state again. It means that it is determined whether or not the valve is normally opened by rotating the valve by 70 degrees or more. Hereinafter, the present invention will be described on the assumption that the valve is rotated in the open and forward direction through the initial opening process 300. However, even if the valve is rotated in the opening direction through the initial opening process, if the open forward direction is modified to the opening direction and the opening direction is changed to the open forward direction in the following description, have.

As a result of the third monitoring, if the switch state is changed, the control unit rotates the valve continuously for a preset time (2 to 5 seconds) and then stops the valve (410). Constant rotation of the valve is intended to allow the valve to fully rotate in the 90 DEG direction beyond 70 DEG, as described above. When the valve is stopped, the discharge port is completely opened, so that the food waste inside the drying oven is discharged through the discharge port. However, as a result of the third monitoring, if the switch state has not been changed, it means that the valve is caught by the food waste as shown in Fig. 7 (a) and has not rotated more than 70 degrees in the open direction. Thereby causing the valve to rotate in the opposite direction, that is, in the direction of the opening portion as shown in FIG. 7 (b) (404).

The control unit controls the valve driving motor so that the valve is rotated in the direction of the opening part and then controls the fourth monitoring unit for monitoring the switch for a predetermined time (10 to 20 seconds) whether the switch has changed from a high state to a low state (406).

As a result of the fourth monitoring, if the switch state has been changed, the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) (408). At this time, the state of the valve becomes the initial state in which the discharge port is closed as shown in FIG. 7 (c). That is, the state of FIG. 7 (c) is a state in which the valve closes the discharge port, and the control unit again performs the opening initial process 300 shown in FIG. 3 through the process as shown in FIG. Here, the difference from the description of FIG. 4 is the direction of rotation of the valve. In other words, although the valve starts rotating in the open direction in the explanation of FIG. 4, when the process of FIG. 4 starts in the state of FIG. 7 (c), the valve starts to rotate in the opening direction. On the other hand, as a result of the fourth monitoring, if the switch state has not been changed, it means that the valve is caught by the food waste and has not rotated in the direction of the opening portion. (412) to rotate in the opposite direction, i.e., open and forward.

The control unit monitors the valve for a preset time (10 to 20 seconds) whether the switch is changed from a high state to a low state in a state in which the valve is being rotated in the open forward direction (412) 5 monitoring process is performed (414).

As a result of the fifth monitoring, if the switch state is changed, the control unit rotates the valve continuously for a preset time (2 to 5 seconds) and then stops the valve (410). When the valve is stopped, the discharge port is completely opened, so that the food waste inside the drying oven is discharged through the discharge port. However, as a result of the fifth monitoring, if the switch state has not been changed, it means that the valve is caught by the food waste as shown in Fig. 7 (a) and has not rotated more than 70 degrees in the open direction. Thereby causing the valve to rotate in the opposite direction, that is, in the direction of the opening portion as shown in FIG. 7 (b) (404). That is, after the fifth monitoring, the controller re-executes the process of rotating the valve in the opposite direction (step 404).

On the other hand, if the number of rotations of the valve in the opposite direction is counted by the fifth monitoring result and the number of rotations exceeds the predetermined number (3 to 4), the control unit outputs the error message without repeating the above- The entire process is terminated (416). That is, the fact that the state of the switch is not changed from high to low in the mid-open period means that the valve is no longer rotated between 20 ° and 70 ° by food waste or the like, as shown in FIG. 7 (a) Therefore, the present invention can not solve the problem according to the present invention. In this state, the present invention outputs an error message so that the user can take appropriate measures.

Hereinafter, with reference to Figs. 8 to 12, a method of controlling a valve according to the present invention, in particular, a method of converting a valve from an open state to a closed state will be described in detail. Meanwhile, the method of converting the valve from the open state to the closed state can be understood as a reverse of the method of converting the valve from the closed state to the open state. Hereinafter, a description overlapping with the above- would.

FIG. 8 is a flowchart illustrating a process of converting a valve from an open state to a closed state in a valve control method according to an embodiment of the present invention.

In the state where power is applied to the garbage disposal apparatus (610), the drying furnace as shown in FIG. 1 discharges the garbage through the discharge port. When a signal indicating that the garbage disposal process is completed is received (620) (630) drives the drive motor so that the valve can be rotated in the opposite direction to the direction in which the valve was finally rotated. The signal indicating that the food garbage discharge process has been completed may be received via a sensor inside the drying furnace, by counting the time the food garbage is discharged, by the user's input of the end button, Can be received through various methods. Meanwhile, the process performed immediately before the process shown in FIG. 8 is a process 500 of discharging food waste as shown in FIG. 3. In order for the food waste to be discharged through the discharge port, Or stand vertically to the right. In the case where the convex portion of the valve faces to the right, when the valve is rotated in the open forward direction (clockwise direction), in order to close the valve again, the valve is moved in the opposite direction (counterclockwise direction) Closed forward direction ') (630). In the case where the convex portion of the valve faces the left side, the valve is rotated in the opening direction (counterclockwise direction). In order to close the valve again, the valve is moved in the opposite direction (Hereinafter, simply referred to as a " closing direction ") (630). In any case, in order to switch the valve in the open state to the closed state, the control unit must rotate the valve in the rotational direction immediately before the start of the closed state, that is, the rotational direction opposite to the final rotational direction in the opening process, Information on the rotation direction can be obtained from a storage unit (not shown) storing information on the rotation direction. Hereinafter, the closing process of the valve will be described on the assumption that the discharge port is opened with the valve rotated in the open normal direction (clockwise direction). That is, the control unit controls the valve driving motor so that the valve can be rotated in the closed forward direction (counterclockwise direction) when the food waste discharge end signal is received.

After allowing the valve to rotate in the closed normal direction, the controller proceeds to an initial valve closing phase so that the valve can be normally rotated in the direction in which the outlet is closed (700). Details of the valve closing initial process will be described in detail with reference to Figs. 9 and 10. Fig.

After the initiation of the closing process, the controller proceeds to the closing middle period so that the valve can normally close the outlet (800). Details of the closed middle period process will be described in detail with reference to Figs. 11 and 12. Fig.

After the middle-closing process, the drying process is performed again, and then the valve opening process as shown in FIG. 3 may be repeated.

FIG. 9 is a flow chart of an embodiment showing details of the closing initial process 700 of the valve control method shown in FIG. FIG. 10 is an exemplary view showing a state of a valve in each process shown in FIG. 9, and shows states of a valve closing an outlet.

The control unit controls the valve drive motor so that the valve is rotated in the closed forward direction and then determines whether the switch has changed from the low state to the high state for a predetermined time (10 to 20 seconds) A sixth monitoring process is performed (702).

As a result of the sixth monitoring, if the switch state is changed, it means that the valve is normally rotated. Therefore, the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) (712) do. However, as a result of the sixth monitoring, if the switch state has not been changed, it means that the valve has not been rotated by more than 20 degrees due to the food waste, as shown in Fig. 10 (a) The valve is caused to rotate in the opposite direction (counterclockwise direction) (hereinafter, simply referred to as the " closing direction ") of the valve closing direction (704).

The control unit controls the valve driving motor so that the valve is rotated in the direction of the closed portion and then controls the seventh monitoring unit to monitor whether the switch has changed from a low state to a high state for a predetermined time (10 to 20 seconds) (706).

As a result of the seventh monitoring, if the switch state is changed, the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) (712) and performs the closing middle process (800). However, as a result of the seventh monitoring, if the switch state has not been changed, it means that the valve has not been rotated by more than 20 degrees in the direction of the closed part due to food waste, as shown in Fig. 10 (c) So that the valve is rotated in the closed normal direction (708).

The control unit repeats the sixth monitoring routine 702 again after rotating the valve in the closed normal direction.

On the other hand, if the control unit counts the number of times the valve is rotated in the closed forward direction by the seventh monitoring result and exceeds the predetermined number (three to four times), the control unit outputs the error message without repeating the above- The entire process is terminated (710). The user can confirm the error message and take another action as described above so that the valve can be operated normally again.

FIG. 11 is a flowchart illustrating an example of the valve closing control method 800 shown in FIG. 8 in detail. FIG. 12 is an exemplary view showing a valve state in each process shown in FIG. 11, and shows states of a valve closing an outlet.

The control unit determines whether the switch is changed from a high state to a low state for a predetermined time (10 to 20 seconds) in a state where the valve is continuously rotated through the initial closing process 700 An eighth monitoring process is performed (step 802). That is, the switch is changed from the low state to the high state through the initial closing process, and the controller determines whether the switch is again switched from the high state to the low state. Hereinafter, the present invention will be described on the assumption that the valve is rotated in the closed normal direction (counterclockwise direction) through the initial closing process 700. However, even if the valve is rotated in the direction of the closing portion through the initial process of closing, if the closing forward direction in the following description is changed to the closing direction and the closing direction is changed to the closed forward direction, have.

As a result of the eighth monitoring, if the switch state is changed, the control unit rotates the valve continuously for a predetermined time (2 to 5 seconds) and then stops the valve (810) because the valve is normally closed. When the valve is stopped, the discharge port is completely closed. Therefore, the food waste flows into the drying oven again and the drying process is performed. However, as a result of the eighth monitoring, if the switch state has not been changed, it means that the valve has not been rotated by more than 70 degrees in the closed normal direction due to the food garbage, as shown in Fig. 12 (a) Thereby causing the valve to rotate in the opposite direction, that is, in the closing direction as shown in FIG. 12 (b) (804).

The control unit controls the valve driving motor so that the valve is rotated in the direction of the closed part, and then controls the valve driving motor so as to monitor the valve for a predetermined time (10 to 20 seconds) to see whether the switch has changed from a high state to a low state (806).

As a result of the ninth monitoring, if the switch state has been changed, the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) (808). At this time, the state of the valve becomes a closed initial state in which the discharge port is completely opened as shown in Fig. 12 (c). That is, the state of FIG. 12 (c) is a state in which the valve opens the discharge port, and the control unit again performs the closing initial process 700 shown in FIG. 8 according to the procedure shown in FIG. The difference from the description of FIG. 9 is the direction of rotation of the valve. 9, the valve starts to rotate in the closed forward direction (counterclockwise direction). However, when the process of FIG. 9 starts in the state of FIG. 12 (c) The difference is that it starts to rotate. On the other hand, as a result of the ninth monitoring, if the switch state has not been changed, it means that the valve has not been rotated in the direction of the closed part due to the food waste, so that the control unit controls the valve driving motor so that the valve rotates in the opposite direction, (812).

The control unit monitors the valve for a predetermined period of time (10 to 20 seconds) to determine whether the switch is changed from a high state to a low state in a state where the valve is rotated in the closed forward direction according to the above- 10 monitoring process is performed (814).

As a result of the tenth monitoring, if the switch state is changed, the valve is normally closed and is rotating in the normal direction, so that the control unit continuously rotates the valve for a predetermined time (2 to 5 seconds) and then stops the valve (810). However, as a result of the tenth monitoring, if the switch state has not been changed, it means that the valve has not been rotated more than 70 degrees in the closed normal direction due to the food garbage as shown in Fig. 12 (a) Thereby causing the valve to rotate in the opposite direction, that is, in the closing direction as shown in FIG. 12 (b) (804). That is, after the tenth monitoring, the control unit re-executes the process of rotating the valve in the opposite direction (804).

The control unit counts the number of times the valve is rotated in the opposite direction by the tenth monitoring result, and when the number of times exceeds the preset number (3 to 4), the controller outputs the error message without repeating the above- (816).

On the other hand, when the valve is rotated in the closing direction in the initial process of closing, the state of the switch in the eighth monitoring process 802 means that the flat surface of the valve faces the inside of the drum. This state can not be regarded as a state in which the valve closes the discharge port but normally closes the discharge port. Accordingly, when the valve is placed in the state as described above, the control unit rotates the valve for a predetermined time and then rotates for more time than the general rotation time in the stop step 810. That is, the control unit must further rotate the valve by 180 degrees, so that the valve is further rotated to the state of FIG. 2 (a) in consideration of the normal rotation speed and the change state of the switch.

At this time, since the valve is already rotated 90 ° without being caught by the food waste, it is expected that the valve will not be obstructed by the food waste even if it rotates further by 180 °. However, when the rotation is obstructed by the food waste , The control unit re-executes the above-described processes, so that the valve can normally close the discharge port.

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.

1 is an exploded perspective view of an embodiment of a drying furnace of a food waste disposal apparatus to which the present invention is applied.

Fig. 2 is an exemplary view showing a state in which the valve shown in Fig. 1 opens and closes the discharge port. Fig.

FIG. 3 is a flow chart illustrating a process of converting a valve from a closed state to an open state in a valve control method according to an embodiment of the present invention.

FIG. 4 is a flow chart of an embodiment showing details of the initial opening process of the valve control method shown in FIG. 3;

FIG. 5 is an exemplary view showing a valve state in each process described in FIG. 4; FIG.

FIG. 6 is a flow chart of one embodiment detailing the open middle period 400 of the valve control method shown in FIG. 3;

FIG. 7 is an exemplary view showing a valve state in each process described in FIG. 6; FIG.

FIG. 8 is a flowchart illustrating an operation of converting a valve from an open state to a closed state in a valve control method according to an embodiment of the present invention. FIG.

FIG. 9 is a flow chart of an embodiment showing details of an initial closing process of the valve control method shown in FIG. 8; FIG.

10 is an exemplary view showing a valve state in each process described in Fig. 9. Fig.

11 is a flowchart of an embodiment of the valve closing control method shown in FIG. 8 in detail.

FIG. 12 is an exemplary view showing a valve state in each process described in FIG. 11; FIG.

Description of the Related Art

100: drying furnace 110: drum portion

114: exhaust port 140: heater part

180:

Claims (10)

A control method applied to a garbage disposal apparatus including a drum portion having a discharge port, a control portion, and a discharge portion for opening and closing the discharge port, An opening start step of causing the control unit to rotate the valve of the discharge unit in the open forward direction when a signal indicating completion of drying in the drum unit is received; Wherein the control unit controls the valve to rotate in the open direction and changes the rotational direction of the valve according to the rotational state of the valve so that the valve can be continuously rotated in a direction to open the outlet, ; Wherein the control unit changes the rotational direction of the valve in accordance with the rotational state of the valve so that the valve opens the outlet after the initial opening step is performed, A closing start step of rotating the valve of the discharge unit such that the control unit closes the discharge port when a signal indicating that the discharge of the waste in the drum unit is completed is received; The valve is rotated in the direction of closing the discharge port so that the control unit changes the rotational direction of the valve according to the rotational state of the valve so that the valve can be continuously rotated in the direction of closing the discharge port Closure initial stage; Further comprising a closing middle stage for causing the valve to close the outlet by changing the rotational direction of the valve in accordance with the rotational state of the valve after the closing initial stage has progressed. The method according to claim 1, In the initial stage of opening, A first monitoring step in which the controller monitors whether a switch which is changed to a high or a low according to a rotation angle of the valve is changed from a low state to a high state; Further comprising: rotating the valve further for a predetermined time when the state is changed in the first monitoring step; Rotating the valve in a first opposite direction when the state is not changed in the first monitoring step; A second monitoring step of monitoring, in a state in which the valve is being rotated in the first opposite direction, whether the switch has changed from a low state to a high state; If the state is changed in the second monitoring step, the controller further rotates the valve for a predetermined time; And if the state is not changed in the second monitoring step, the control unit rotates the valve in the second opposite direction and re-executes the first monitoring step. 3. The method of claim 2, Counting the number of times the control unit re-executes the first monitoring step, and if the preset number of times exceeds the predetermined number, outputting an error message and terminating the valve rotation operation. 3. The method of claim 2, In the open middle stage, A third monitoring step in which the control unit monitors whether the high-state switch is changed to a low state; If the state is changed in the third monitoring step, the controller further rotates the valve for a predetermined time and then stops the valve; Rotating the valve in a third reverse direction when the state is not changed in the third monitoring step; A fourth monitoring step of monitoring, in a state in which the valve is being rotated in the third opposite direction, whether the switch has changed from a high state to a low state; If the state is changed in the fourth monitoring step, the controller further rotates the valve for a predetermined time, and re-executes the opening initial step; Rotating the valve in a fourth counter-direction when the state is not changed in the fourth monitoring step; A fifth monitoring step of monitoring, in a state in which the valve is being rotated in the fourth opposite direction, whether the switch has changed from a high state to a low state; If the state is changed in the fifth monitoring step, the controller further rotates the valve for a predetermined time and then stops the valve; And when the state is not changed in the fifth monitoring step, the control unit rotates the valve in the fifth counter direction and re-executes the fourth monitoring step. 5. The method of claim 4, Counting the number of times the control unit re-executes the fourth monitoring step, and if the predetermined number of times is exceeded, outputting an error message and terminating the valve rotation operation. delete The method according to claim 1, Wherein the initial closure step comprises: A sixth monitoring step in which the controller monitors whether a switch which is changed to a high or a low according to a rotation angle of the valve is changed from a low state to a high state; If the state is changed in the sixth monitoring step, the controller further rotates the valve for a predetermined time; If the state is not changed in the sixth monitoring step, the control unit rotates the valve in the fifth reverse direction; A seventh monitoring step of monitoring, in a state in which the valve is being rotated in the fifth counter-direction, whether the switch has changed from a low state to a high state; If the state is changed in the seventh monitoring step, the controller further rotates the valve for a predetermined time; And when the state is not changed in the seventh monitoring step, the control unit rotates the valve in the sixth counter direction and re-executes the sixth monitoring step. 8. The method of claim 7, Counting the number of times the control unit re-executes the sixth monitoring step, and if the predetermined number of times is exceeded, outputting an error message and terminating the valve rotation operation. The method according to claim 1, Wherein the closing middle stage comprises: An eighth monitoring step in which the control unit monitors whether a high state switch is changed to a low state; If the state is changed in the eighth monitoring step, the controller further rotates the valve for a predetermined time and then stops the valve; If the state is not changed in the eighth monitoring step, the control unit rotates the valve in the seventh reverse direction; A ninth monitoring step of monitoring, in a state in which the valve is being rotated in the seventh reverse direction, whether the switch has changed from a high state to a low state; If the state is changed in the ninth monitoring step, the controller further rotates the valve for a predetermined time, and re-executes the closing initial step; If the state is not changed in the ninth monitoring step, the control unit rotates the valve in the eighth reverse direction; A tenth monitoring step of monitoring, in a state in which the valve is being rotated in the eighth opposite direction, whether the switch has changed from a high state to a low state; If the state is changed in the tenth monitoring step, the control unit further rotates the valve for a predetermined time and then stops the valve; And if the state is not changed in the tenth monitoring step, the controller rotates the valve in the eighth opposite direction and re-executes the ninth monitoring step. 10. The method of claim 9, Counting the number of times the controller repeats the ninth monitoring step, and if the predetermined number of times is exceeded, outputting an error message and terminating the valve rotation operation.

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