KR19980071446A - Food waste handler - Google Patents

Abstract

In the present invention, when the drying time is finished (S13: YES), only the drying heater 11 is turned off (S14) in order to prevent burns after the end of the drying process (S14), and " 0 " Then, the fan motor 52 and the catalyst heater 61 are kept in the same state as they are kept in operation, thereby rapidly cooling the inside of the device and oxidizing and deodorizing the odor component and discharging the same. Then, when the detection temperature Ts by the temperature sensor 13 falls to 60 degrees C or less (S16: YES), the fan motor 52 and the catalyst heater 61 are turned off (S17), and the display part 81 is turned off. The lights are turned off to stop the operation (S18).

Description

Food waste handler

The present invention relates to a food waste disposal device, and more particularly, to a food waste disposal device which dry-processes food waste by heater heating.

Background Art Conventionally, a food waste disposal system has been known in which food wastes such as wet wastes are kept in a dry state so as not to decay, and deodorizing treatment of odors generated during processing. In general, such a food waste processor includes a processing tank for storing food waste, a lid for opening and closing the processing tank when the container is in and out of the apparatus, a heater for heating the food waste in the processing tank, and a temperature sensor for detecting the temperature of the food waste. And a fan for stirring air in the treatment tank, a catalyst unit for oxidatively deodorizing and discharging steam containing odor components evaporated from the food waste to the outside of the apparatus by high temperature heating, and a controller for controlling them. In the case of drying processing of food waste, a treatment tank containing food waste is first set in the apparatus, and a lid is closed to start operation. Then, the controller turns on the heater to heat the food waste in the treatment tank, and controls to maintain the detected temperature of the temperature sensor within a predetermined temperature range for drying the food waste to the most appropriate temperature. In addition, the air is stirred by a fan to maintain a uniform temperature in the treatment tank. In the catalyst section, the food waste is heated to oxidize and deodorize the vapor or odor component evaporated by high temperature heating and discharged to the outside of the apparatus. Thereafter, the operation of the apparatus is stopped when the set time has elapsed, and the drying process is finished.

However, in such a configuration, when the user wants to take out the treatment tank immediately after the end of the drying treatment, there is a risk of burns because the treatment tank is at a high temperature.

The food waste disposal system of this invention solves the said subject, and aims at preventing the burn after completion of a drying process.

1 is a schematic configuration diagram of a food waste disposal system as an embodiment of the present invention;

2 is a perspective view of a treatment tank of the present invention,

3 is a cross-sectional view of the treatment tank of the present invention;

4 is an external view of a food waste disposal system of the present invention;

5 is an external view of a food waste processor of the present invention;

6 is an explanatory diagram of an operation panel of the present invention;

7 is a flowchart showing a control process performed by the controller of the present invention;

8 is a graph showing the relationship between the detected temperature and time of the temperature sensor of the present invention;

9 is a graph showing the relationship between the detected temperature of the temperature sensor of the present invention and time.

※ Explanation of symbols for main parts of drawing

The food waste disposal system of the present invention which solves the above problems includes a treatment tank for storing food waste such as wet waste, a casing for storing the treatment tank, a lid to open and close to access the treatment tank from the casing, and the treatment. A heater for heating food waste in the tank, a fan for convection air in the processing tank during the heating operation by the heater, temperature detection means for directly or indirectly detecting the temperature of the food waste in the processing tank, In the food waste disposal apparatus provided with the heating control means which controls the heating operation of the said heater based on the detection temperature by a temperature detection means, The drive of the said fan is continued even after completion | finish of the heating control by the said heating control means, When the detection temperature by the temperature detection means falls to below a predetermined value, And that the drive is stopped as a base.

The food waste disposal system of the present invention has the above-described configuration, in which, after the processing tank in which food waste is stored is stored in the casing, the lid is closed and the drying operation is started, the food waste is heated by a heater and the temperature is detected by means of temperature detection means. The temperature of the food waste is detected directly or indirectly, and the heating operation of the heater is controlled based on the detected temperature. In addition, the fan convections the air in the treatment tank to maintain a uniform temperature. Thereafter, the treatment tank is at a high temperature immediately after the drying treatment ends and the heating control of the heater is terminated. If the user attempts to withdraw the treatment tank immediately after the drying treatment, there is a risk of burns. By continuing the driving, the processing tank temperature can be rapidly lowered to a temperature where no burn is caused, and the user stops driving the fan when the detection temperature by the temperature detecting means falls below a predetermined value. It turns out that it became a safe temperature.

(Example)

In order to clarify the structure and operation of the present invention described above, the most suitable embodiment of the food waste disposal system of the present invention will be described below.

1 is a schematic configuration diagram of a food waste disposal system as an embodiment of the present invention. The food waste disposal device is divided into a heating part 10 which performs a heating operation, a pot-shaped processing tank 20 for storing wet garbage, and an inner body 30 and an inside for storing the processing tank 20 in a cylindrical space. The cover part 40 which blocks outside air from the upper part of the body 30, the fan part 50 installed in the lower part of the cover part 40, the catalyst part 60 which heats exhaust gas, and the controller which controls these ( 70).

The heating section 10 has a ring-shaped circular cross section and forms a notch in the drying heater 11 and the L-shaped plate that electrically heats the treatment tank 20, and the drying heater 11 is connected from the bottom by the notch. It consists of the heater support plate 12 supported by a contact, and the temperature sensor 13 which contacts a lower surface of the process tank 20, and detects a temperature.

The processing tank 20 is provided with the handle 21 required at the time of attachment and detachment, as shown in FIG. As shown in FIG. 3, the connection part 22 with the handle 21 of the processing tank 20 is concave inward so that the edge part of the handle 21 may not extend outward. In addition, an annular convex portion 23 which is convex downward is formed at the center of the lower surface of the treatment tank 20, and when placed on the drying heater 11 of the treatment tank 20, the temperature sensor 13 and the drying are carried out. It is a shape which cuts off between the heaters 11. Therefore, radiant heat from the drying heater 11 to the temperature sensor 13 is reduced and accurate temperature detection can be performed. Moreover, since the contact part 24 of the temperature sensor 13 of the lower surface of the process tank 20 is surrounded by the convex part 23, it becomes difficult to get the contact part 24, and it is difficult to produce a poor contact and to reduce the error of detection temperature. Can be. In addition, a gap is formed between the side surface of the treatment tank 20 and the inner body 30, and steam or odor components generated from the wet garbage in the treatment tank 20 are heated at the lower portion of the treatment tank 20 through the gap. 10) and is reheated by the drying heater (11).

The cover part 40 includes a hinge cover 43 for covering the clamp 41 and the hinge 41 to rotatably support the cover 41 and the cover 41 to be rotatably held in the closed position. , A cover packing 44 which seals between the cover 41 and the inner body 30. The hinge cover 43 forms a hollow portion 45 between the cover 41 and an upper surface thereof, and a lower end thereof forms an air supply 46 for communicating the hollow portion 45 with the outside of the device. The cover 41 is provided with an outside air vent 47 for introducing outside air through the hollow 45. In this way, the outside air vent 47 is covered by the hinge cover 43, and the air supply port 46 is disposed below the outside air vent 47, thereby making it difficult to enter rainwater from the outside into the machine.

The fan unit 50 includes a fan motor 52 for rotating the fan 51 and the fan 51, a fan shape 53 having a cylindrical shape accommodating the fan 51, and the fan motor 52, the fan 51, and the fan. It consists of a partition plate 54 for isolating the motor 52 and a disc-shaped fan cover 55 installed below the fan case 53.

The fan 51 cuts the disc partially into an L shape and rotates to form a plurality of blade portions, thereby sucking air from the center portion and releasing it in the circumferential direction.

The fan cover 55 has a plurality of inlets for sucking air in the treatment tank 20 near the center thereof, and a plurality of inlets for blowing air from the fan 51 into the treatment tank 20 around its outer circumference. A spout is formed. In addition, a plurality of jet ports are formed on the side surface of the fan case 53.

The through hole 54a is formed in the center of the partition plate 54, and the rotating shaft 52a of the fan 51 penetrates through it. The through hole 54a is formed slightly larger with respect to the diameter of the rotation shaft 52a. When the negative pressure band is formed in the central portion of the fan 51 by the rotation of the fan 51, the outside air is discharged from the air supply port 46. The suction is directed toward the fan 51 after passing through the fan motor 52 and passing through the through hole 54a. In this way, by absorbing the outside air by the fan 51, the efficiency of the oxidation reaction in the catalyst unit 60 can be improved. In addition, since no air flows from the treatment tank 20 toward the fan motor 52, the odor component can be prevented from going out as it is, and corrosion and overheating of the fan motor 52 can be prevented.

The catalyst part 60 is formed of a catalyst 62 and a heating element 10 formed around the outer circumference of the circumferential catalyst heater 61 and the catalyst heater 61 and the vapor and odor components from the heating part 10 to the catalyst part 60. A steam inlet 63 serving as a flow path, a cylinder 64 which is provided coaxially with the catalyst heater 61, and serves as a flow path through which the steam and odor components flow through the catalyst 62, and a steam outlet 65 serving as an outlet of the steam. Is done.

The catalyst 62 is heated to a high temperature by the catalyst heater 61, and oxidizes and deodorizes the oxidized vapor and odor components flowing out from the bottom. By flowing from the lower part to the upper part, the catalyst part 60 is passed through the draft force and oxidative deodorization is performed.

The steam outlet 65 discharges the oxidized and deodorized steam out of the apparatus. 4, the steam cover 66 is provided in the outer side of this steam outlet 65, and rainwater etc. are prevented from entering into the catalyst part 60. As shown in FIG. This steam outlet 65 is provided in the connection part of the plate part which forms an outer body.

The controller 70 is composed of a CPU, a RAM, a ROM constituting a known arithmetic logic circuit (not shown), an input interface for inputting signals from various sensors, an output interface for outputting driving signals to various actuators, and the like. . The controller 70 controls on / off of energization to the drying heater 11, the fan motor 52, and the catalyst heater 61, but is common to the on / off control of the fan motor 52 and the catalyst heater 61. The cost is reduced by using a relay.

As shown in FIG. 5, an operation panel 80 for external operation is provided on the exterior of the apparatus. As shown in Fig. 6, the operation panel 80 has a display unit 81 for displaying a drying time, a time setting switch 82 for setting a drying time, and operation on / off for operating start / stop of drying operation. The switch 83 is installed.

The controller 70 has a so-called child lock function that disables the operation from the operation panel 80 by detecting simultaneous pressing of the time setting switch 82 and the operation on / off switch 83. The child lock is released by detecting the simultaneous pressing of the time setting switch 82 and the operation on / off switch 83 again. By providing the child lock function as described above, it is possible to prevent the disadvantage that the operation on / off switch 83 is unnecessarily turned on to start the drying operation. In addition, it is easy for operation by simultaneously pressing two switches, and it is easy to use because it is difficult to lock and release unnecessarily. In addition, the cost can be reduced because there is no need to install a new child lock switch or device.

In addition, a temperature fuse 90 connected in series with the drying heater 11 is provided outside the inner body 30, and if abnormal overheating occurs in the apparatus, it is melted to heat the drying heater 11. It is a structure which makes it stop.

Next, the control processing performed by the controller 70 will be described using the flowchart of FIG. 7.

When the operation on / off switch 83 provided in the operation panel 80 is pressed and the start operation of the drying process is performed (S1), the display unit 81 displays "6" which displays 6 hours which is the initial value of the drying time ( S2), the drying heater 11 is turned on (S3) and the fan motor 52 and the catalyst heater 61 are turned on (S4). Further, a timer for counting down the drying time is started (S5), and the display time is changed in accordance with the decrease of the remaining time. In this case, when the time setting switch 82 is pressed, each time the pressing operation is performed, " 6 " → " 7 " → " 8 " → 9 > → The drying time is changed to "6" and displayed on the display unit 81, and the timer counts down to the changed drying time.

Next, it is checked whether the detection temperature Ts by the temperature sensor 13 is below predetermined temperature (60 degreeC in this embodiment) (S6). If the temperature in the device is already high at the start of operation with this check, it is determined whether or not it is a so-called hot start. If the detection temperature Ts is 60 ° C. or lower (S6: YES), it is determined that the detection is not a hot start and the detection temperature Ts by the temperature sensor 13 is required to rise from the first predetermined temperature to the second predetermined temperature. The time [T (time required to rise from 100 ° C to 140 ° C in this embodiment)] is checked (s7). As shown in FIG. 8, this time T differs largely by the presence or absence of the processing tank 20. As shown in FIG. The temperature rise time T3 when the treatment tank 20 is set is shorter as the amount of food waste in the treatment tank 20 is smaller, and the treatment tank 20 is shortest in the empty state (T2), but the treatment When the tank 20 is not set, it becomes shorter (T1). This is because when the treatment tank 20 is set, there is an influence of the heat capacity of the treatment tank 20 itself and the effect of reducing the radiant heat from the drying heater 11 to the temperature sensor 13. Therefore, the presence or absence of the processing tank 20 is detected by comparing this time T with the reference time (6 minutes in this embodiment). In order to measure this time, it is necessary to set the 1st predetermined temperature so that it may become higher than the detection temperature Ts of the temperature sensor 13 before starting operation. With this setting, the time T can be detected, but since the rising gradient of the detection temperature Ts is influenced by the outside temperature in addition to or without the treatment tank 20, it is necessary to reduce the influence of the outside temperature to make a more accurate judgment. The first predetermined temperature and the second predetermined temperature are set to high values. The influence of the error is reduced by increasing the temperature width of the first predetermined temperature and the second predetermined temperature.

If the time T is less than 6 minutes (S7: NO), it is determined that the treatment tank 20 is not set, and only the drying heater 11 is turned off (S8), and the fan motor 52 and the catalyst heater are turned off. Operation continues in the warm state as it is with (61). In this way, the fan 51 is continuously driven to quickly cool the inside of the device, and the heating by the catalyst heater 61 is continued to prevent the odor component from being discharged out of the device as it is. When the temperature detected by the temperature sensor 13 drops to 60 ° C. or lower (S9: YES), the fan motor 52 and the catalyst heater 61 are turned off (S10), and the display time is flickered so as to treat the treatment tank ( The set forgetting of 20) is notified (S11).

On the other hand, when the time T is 6 minutes or more in step 7 (S7: YES), it is determined that the treatment tank 20 is set, and the drying process is continued. In addition, even in the case where the detection temperature is higher than 60 ° C in step 6 (S6: NO), it is judged as a hot start and the drying process is continued without judging the presence or absence of the treatment tank. In the case of the hot start, the determination of the presence or absence of the treatment tank is because the temperature gradient is difficult to be stabilized because the time at start-up is short, and accurate detection cannot be expected. In particular, when the detection temperature Ts by the temperature sensor 13 has already exceeded 100 degreeC at the start of operation, it is necessary to wait for the detection temperature Ts to fall below 100 degreeC once, and it takes extra time. For this reason, convenience in use is improved without judging whether a treatment tank is present.

In the drying process, when the detection temperature Ts by the temperature sensor 13 rises to 145 degreeC, the drying heater 11 is turned off, and when the detection temperature Ts falls to 135 degreeC, the drying heater 11 is turned off. On / off control of turning on is performed (S12). The temperature in the treatment tank 20 is made uniform by stirring the air in the treatment tank 20 by the rotation of the fan 51, and the temperature of the wet waste in the treatment tank 20 is maintained at around 120 ° C. The heated steam and odor component flows down the treatment tank 20 in the gap between the treatment tank 20 and the inner body 30 to be reheated, and is oxidized and deodorized by the catalyst unit 60 to be discharged out of the device.

When the drying time is finished (S13: YES), only the drying heater 11 is turned off (S14) and "0" is displayed on the display portion 81 (S15). Then, the fan motor 52 and the catalyst heater 61 are kept in operation as they are, and the inside of the apparatus is rapidly cooled and the odor component is oxidized and deodorized and discharged. As shown in FIG. 9, the cooling time Ta when the operation of the fan motor 52 is continued even after the heating stop of the drying heater 11 is stopped is equal to the cooling time Tb when the fan motor 52 is also stopped. Shorter than Then, when the detection temperature Ts by the temperature sensor 13 falls to 60 degrees C or less (S16: YES), the fan motor 52 and the catalyst heater 61 are turned off (S17), and the display part 81 is turned off. The lights are turned off to stop the operation (S18). Thus, by lowering until the detection temperature Ts becomes 60 degrees C or less, the handle 21 of the processing tank 20 is set to about 40 degreeC, and it is set as safe temperature.

As described above, according to the food waste disposal system of the present embodiment, the presence or absence of the treatment tank 20 based on the time T required for the detection temperature Ts of the temperature sensor 13 to rise from 100 ° C to 140 ° C. When it is determined that the processing tank 20 is absent, it is possible to prevent a decrease in the lifespan or failure of the apparatus due to the continuous heating operation without the processing tank 20 by stopping and notifying the heating operation. Moreover, since the structure of a switch etc. for determining the presence or absence of the processing tank 20 is unnecessary, the cost regarding the structure for processing tank detection can be reduced. When the detected temperature Ts of the temperature sensor 13 at the start of operation is higher than 60 ° C., the treatment tank 20 is set by continuing the drying process without judging the presence or absence of the treatment tank 20. Therefore, it is judged that there is no treatment tank and the disadvantage of stopping the drying treatment can be prevented, so the convenience in use is good. In addition, even after determining that there is no treatment tank 20 and stopping the heating operation by the drying heater 11, the fan 51 and the catalyst heater 61 continue to drive so that the temperature of the treatment tank 20 can be lowered quickly. In this case, the odor component can be prevented from being discharged out of the equipment. In addition, the above notification is performed at a time when the detection temperature Ts of the temperature sensor 13 falls to 60 ° C. or lower, thereby preventing the user from being burned by steam or the like when the lid 41 is opened.

In addition, even after the drying time ends and the heating operation by the drying heater 11 is stopped, the fan 51 and the catalyst heater 61 continue to be driven to lower the temperature of the treatment tank 20 quickly. It can prevent the discharge out of the device In addition, when the temperature detection Ts by the temperature sensor 13 falls to 60 degrees C or less, the time display of the display part 81 turns off, and when the user judges completion of a drying process, the temperature of the processing tank 20 is sufficient. It can be lowered to prevent the risk of burns.

In addition, in the food waste disposal system of this embodiment, although the temperature sensor 13 is installed in the position which detects the temperature of the lower surface of the processing tank 20, it is not limited to this, For example, a temperature sensor is installed inside the lid 41, for example. It may be a configuration for detecting the ambient temperature in the treatment tank by installing in the. Even in such a configuration, when the set of the treatment tank is forgotten, radiant heat from the heater is not interrupted by the treatment tank and can be easily transferred directly to the temperature sensor, so that the presence or absence of the treatment tank due to the difference in the temperature gradient can be detected. In addition, the detection of the presence or absence of the treatment tank is not necessarily limited to the structure in which the heater and the temperature sensor are blocked by the presence or absence of the treatment tank. In this way, the effect of remarkable difference in temperature gradient is induced. Even if such a structure is not provided, if the treatment tank is not set, it is possible to determine whether the treatment tank is present because the temperature gradient varies depending on the heat capacity. Therefore, the lower surface of the treatment tank may be flat, and the position of the heater is not limited to the lower portion of the treatment tank.

In the present embodiment, the presence or absence of the treatment tank 20 is determined based on the time T required for the detection temperature to rise from 100 ° C to 140 ° C, but the present invention is not limited thereto. You may judge. By judging in a low temperature range, the time until it determines with no treatment tank can be shortened. Moreover, in order to make the judgment in that case correctly, you may provide the external air temperature sensor which detects outside air temperature, and may change a judgment standard according to the detected temperature. In addition, the presence or absence of a treatment tank may be judged not only by the time required to raise from a predetermined temperature to a predetermined temperature but by the temperature rising within a predetermined time from a certain detection temperature, for example.

In the present embodiment, in the case of hot start, the presence or absence of the treatment tank 20 is not determined, but the determination of the presence or absence of the treatment tank may be always performed.

In this embodiment, the on / off control of the fan motor 52 and the catalyst heater 61 is performed in common, but the present invention is not limited thereto. For example, only the driving of the fan motor 52 is stopped after the heating heater is stopped. You may continue. In this manner, the device can be cooled more quickly.

As mentioned above, although the Example of this invention was described, this invention can be implemented in various forms in the range which does not deviate from the summary of this invention, without being limited to this Example at all.

As described above, according to the food waste disposal system of the present invention, the fan is driven until the temperature detected by the temperature detection means becomes equal to or less than a predetermined value even after the heating control of the heater is finished. It is safe because the user's burn can be prevented by lowering to a temperature that does not. Moreover, since the time until a process tank temperature becomes below a predetermined value can be shortened by driving a fan, it is convenient in use. Moreover, since the detection temperature by a temperature detection means is made into a criterion, it can be judged correctly that the temperature of the processing tank fell to the temperature which does not burn.

Claims (1)

A processing tank for storing food waste such as wet garbage, A casing accommodating the treatment tank; A cover which opens and closes to enter and exit the processing tank from the casing; A heater for heating food waste in the treatment tank; A fan for convection air in the treatment tank during a heating operation by the heater; In the food waste disposal apparatus provided with the temperature detection means which detects the temperature of the food waste in the said processing tank directly or indirectly, After the completion of the heating control by the heating control means, the driving of the fan is continued, and the food waste is stopped when the temperature detected by the temperature detecting means falls below a predetermined value. Handler.