JPH10230238A - Garbage treating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a burn after the end of a drying treatment by continuing the driving of a fan until a detection temp. attains a prescribed temp. or below even after the end of heating control. SOLUTION: When a drying treatment is started by operation of an operation panel 80, a drying heater 11, a fan motor 52 and a catalyst heater 61 are driven. The drying is started in accordance with the set drying time and a timer is counted down. The drying temp. is detected by a temp. sensor 13 and is controlled and maintained to and at the prescribed temp.; for example, about 100 to about 140 deg.C. When the drying ends on elapsing of the drying time, only the drying heater 11 is turned off and the fan motor 52 and the catalyst heater 61 are held turned on. As a result, the cooling in the apparatus is expedited and odorous components are removed by oxidation and are discharged. When the detection temp. of the temp. sensor 13 falls to the prescribed temp.; for example, about <=60 deg.C, the fan motor 52 and the catalyst heater 61 are turned off and the operation is stopped. As a result, the temp. of the matter subjected to drying attains the temp. at which there is no danger of the burn. Safety is thus assured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a garbage processing machine,
More specifically, the present invention relates to a garbage disposer for drying garbage by heating with a heater.

[0002]

2. Description of the Related Art Heretofore, there has been known a garbage disposer in which garbage such as garbage is dried to prevent decay and odor components generated during treatment are deodorized. Generally, such a garbage processing machine detects a temperature of the garbage, a processing tank for storing the garbage, a lid that opens and closes when the processing tub is taken in and out of the equipment, a heater for heating the garbage in the processing tub. Temperature sensor, a fan for agitating the air in the processing tank, and a catalyst section for oxidizing and deodorizing steam mixed with odor components evaporated from kitchen garbage by high-temperature heating and discharging it to the outside of the equipment. A controller. In the case of drying the garbage, first, the processing tank containing the garbage is set in the apparatus, the lid is closed, and the operation of starting the operation is performed. Then, the controller turns on the heater
Then, the garbage in the processing tank is heated, and the temperature detected by the temperature sensor is controlled to be within a predetermined temperature range in order to dry the garbage at an optimum temperature. Further, the temperature in the processing tank is kept uniform by stirring the air with a fan. The catalyst unit oxidizes and deodorizes steam and odor components evaporated by heating the garbage by heating at a high temperature and discharges the components to the outside of the device. After that, when the set time has elapsed, the operation of the device is stopped, and the end of the drying process is notified.

[0003]

However, in such a configuration, if the user tries to take out the processing tank immediately after the drying processing is completed, the processing tank may be burned due to the high temperature. Was. It is an object of the present invention to solve the above problem and prevent a burn after the drying process.

[0004]

According to a first aspect of the present invention, there is provided a garbage disposer for storing a garbage such as garbage, a casing for accommodating the tub, and a casing for storing the trash from the casing. A lid that opens and closes to get in and out,
A heater for heating the garbage in the processing tank, a fan for convection of the air in the processing tank during the heating operation by the heater, and a direct or indirect detection of the temperature of the garbage in the processing tank And a heating control means for controlling the heating operation of the heater based on the temperature detected by the temperature detecting means. The gist of the invention is that the driving is continued and the driving of the fan is stopped when the temperature detected by the temperature detecting means falls below a predetermined value.

[0005] The garbage processing machine of the present invention having the above-described structure is
After the processing tank containing the garbage is stored in the casing, the lid is closed and the drying process is started. When the garbage is heated by the heater, the temperature of the garbage is directly or directly controlled by the temperature detecting means. Is indirectly detected, and the heating operation of the heater is controlled based on the detected temperature. The air in the processing tank is convected by a fan to keep the temperature uniform.
Then, immediately after the drying process is completed and the heating control of the heater is finished, the temperature of the processing tank is high, and there is a possibility that a user may get burned when trying to take out the processing tank immediately after the drying processing. However, by continuing the drive of the fan even after the end of the heating control, the processing tank temperature can be rapidly lowered to a temperature at which no burn is caused, and when the temperature detected by the temperature detecting means drops to a predetermined value or less, the fan is turned off. Since the driving is stopped, the user can know that the safe temperature has been reached by stopping the fan.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of a kitchen waste disposal machine of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a kitchen waste disposal machine as one embodiment of the present invention. This kitchen waste processing machine is roughly divided into a heating unit 10 for performing a heating operation, a pot-shaped processing tank 20 for storing garbage, an inner shell 30 for storing the processing tank 20 in a cylindrical space, and an outside air at an upper part of the inner shell 30. A lid unit 40 for shutting off the exhaust gas, a fan unit 50 provided below the lid unit 40, a catalyst unit 60 for heating exhaust gas, and a controller 70 for controlling these components.

[0007] The heating unit 10 includes a drying heater 11 having a circular cross section and electrically heating the processing tank 20, and a notch formed in an L-shaped plate, and the drying heater 11 is formed by the notch. Heater support plate 12 supported by line contact from below
And a temperature sensor 13 that contacts the lower surface of the processing tank 20 to detect the temperature.

As shown in FIG. 2, the processing tank 20 has a handle 21 required for attachment and detachment. Handle 2 of processing tank 20
As shown in FIG. 3, the connection portion 22 with the connector 1 has an inwardly concave shape so that the end of the handle 21 does not protrude outside. At the center of the lower surface of the processing tank 20, an annular convex part 23 which is convex downward is formed, and when the processing tank 20 is mounted on the drying heater 11, the temperature sensor 13 and the drying heater 1 are disposed.
It is shaped so as to block between the two. Therefore, radiant heat from the drying heater 11 to the temperature sensor 13 is reduced, and accurate temperature detection can be performed. Further, since the contact portion 24 with the temperature sensor 13 on the lower surface of the processing tank 20 is surrounded by the convex portion 23, the contact portion 24 is less likely to be stained, poor contact is less likely to occur, and errors in the detected temperature can be reduced. it can. In addition, a gap is formed between the side surface of the processing tank 20 and the inner body 30, and steam and odor components generated from the garbage in the processing tank 20 pass through the gap to the heating section below the processing tank 20. 10 and reheated by the drying heater 11.

The lid 40 includes a lid 41, a clamp knob 42 for engaging and holding the lid 41 in a closed position, a hinge cover 43 for covering a hinge for rotatably supporting the lid 41 from above,
It is composed of a lid packing 44 for sealing between the lid 41 and the inner trunk 30. The hinge cover 43 forms a hollow part 45 between the upper surface of the lid 41 and a lower end thereof has an air supply port 46 communicating the hollow part 45 with the outside of the apparatus. Also, the lid 41
Is formed with an outside air vent 47 for taking in outside air through the hollow portion 45. By covering the outside air vent 47 with the hinge cover 43 and providing the air supply port 46 below the outside air vent 47 in this manner, rainwater and the like from the outside hardly enter the device.

The fan unit 50 includes a fan 51 and a fan 5
1 and a cylindrical fan case 53 for accommodating the fan 51 and the fan motor 52
, A partition plate 54 for separating the fan 51 and the fan motor 52, and a disk-shaped fan cover 55 provided below the fan case 53.

The fan 51 has a plurality of blades formed by partially cutting and raising a circular plate into an L shape. By rotating, the fan 51 sucks air from a central portion and discharges air in a circumferential direction.

The fan cover 55 has a plurality of air inlets near the center for sucking air in the processing tank 20.
A plurality of ejection ports for ejecting air from the fan 51 into the processing tank 20 are formed on the outer periphery thereof. Also, a plurality of ejection ports are formed on the side surface of the fan case 53.

A through hole 54a is formed in the center of the partition plate 54, and the rotating shaft 52a of the fan 51 passes therethrough. The through-hole 54a is formed slightly larger than the diameter of the rotating shaft 52a.
When a negative pressure zone is formed at the center of the
Then, the air is sucked toward the fan 51 through the vicinity of the fan motor 52 and the through hole 54a. By sucking the outside air by the fan 51 in this manner, the efficiency of the oxidation reaction in the catalyst unit 60 can be improved. Further, since no air flows from the processing tank 20 side to the fan motor 52 side, it is possible to prevent the odor component from going outside as it is, and it is also possible to prevent corrosion and overheating of the fan motor 52.

The catalyst section 60 includes a columnar catalyst heater 61.
And a catalyst 62 provided around an intermediate portion of the catalyst heater 61.
A steam inlet 63 serving as a flow path for steam and odor components from the heating unit 10 to the catalyst unit 60, and a cylinder 64 provided coaxially with the catalyst heater 61 and serving as a flow channel for flowing steam and odor components through the catalyst 62. A steam outlet 65 serving as a steam outlet.

The catalyst 62 is heated to a high temperature by the catalyst heater 61, and oxidizes and deodorizes steam and odor components flowing from below. By flowing from the lower part to the upper part, oxidative deodorization is performed by using the draft force to pass through the catalyst part 60.

The steam outlet 65 discharges the oxidized and deodorized steam out of the apparatus. As shown in FIG. 4, a steam lid 66 is provided outside the steam outlet 65 to prevent rainwater or the like from entering the catalyst unit 60. The steam outlet 65 is provided at a connection portion of a plate component forming the outer shell.

The controller 70 includes a CPU, a RAM, and a ROM that constitute a well-known arithmetic and logic operation circuit (not shown);
It comprises an input interface for inputting signals from various sensors, an output interface for outputting drive 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. However, the ON / OFF control of the fan motor 52 and the catalyst heater 61 is controlled by using a common relay to reduce costs. Has been reduced.

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

The controller 70 has a time setting switch 8
A so-called child lock function is provided in which operation from the operation panel 80 is disabled by detecting simultaneous pressing of the operation switch 2 and the operation on / off switch 83. The child lock includes a time setting switch 82 and an operation on / off switch 8.
It is released by detecting again the simultaneous pressing with 3 again. By providing the child lock function in this way, it is possible to prevent a problem that the operation on / off switch 83 is inadvertently turned on and the drying operation is started. Further, the operation is simple because the two switches are pressed at the same time, and it is difficult to lock and release carelessly. Furthermore, since it is not necessary to newly provide a child lock switch or device, the cost can be reduced.

In addition, a temperature fuse 90 connected in series with the drying heater 11 is provided outside the inner body 30. If an abnormal overheating occurs in the device, the temperature fuse 90 is blown out and dried.
Is stopped.

Next, control processing performed by the controller 70 will be described with reference to the flowchart of FIG. When the operation ON / OFF switch 83 provided on the operation panel 80 is pressed to start the drying process (S1), "6" indicating 6 hours, which is the initial value of the drying time, is displayed on the display unit 81. (S2), and turns on the drying heater 11 (S3).
At the same time, 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. Here, when the time setting switch 82 is pressed, “6” → “7” → “8” →
The drying time is changed in the order of “9” → “1” →... → “6” and displayed on the display unit 81, and the timer counts down from the changed drying time.

Next, the temperature Ts detected by the temperature sensor 13
Is lower than or equal to a predetermined temperature (60 ° C. in this embodiment) (S6). In this check, if the temperature inside the device is already high at the start of operation, it is determined whether or not a so-called hot start has been performed. If the detected temperature Ts is equal to or lower than 60 ° C. (S6: YES), it is determined that the operation is not a hot start, and it is necessary for the temperature Ts detected by the temperature sensor 13 to rise from the first predetermined temperature to the second predetermined temperature. The time T (the time required to increase from 100 ° C. to 140 ° C. in this embodiment) is checked (S7). This time T
8, greatly differs depending on the presence or absence of the treatment tank 20, as shown in FIG. The temperature rise time (T3) when the processing tank 20 is set is shorter as the amount of garbage in the processing tank 20 is smaller, and becomes the shortest when the processing tank 20 is empty (T3).
2) When the processing tank 20 is not set, the length is further reduced (T1). This is because, when the processing bath 20 is set, there is an effect of the heat capacity of the processing bath 20 itself and an effect of reducing 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 the time T with a reference time (6 minutes in this embodiment). In order to measure this time T, it is necessary to set the first predetermined temperature to a value higher than the temperature Ts detected by the temperature sensor 13 before the start of operation. With such a setting, the time T can be detected. However, the rising gradient of the detected temperature Ts is affected not only by the presence or absence of the processing tank 20 but also by the outside air temperature. The first predetermined temperature and the second predetermined temperature must be set to high values. Further, the influence of the error is reduced by increasing the temperature range between 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 processing tank 20 is not set, and only the drying heater 11 is turned off (S8), and the fan motor 52 The operation is continued with the catalyst heater 61 kept ON. By continuing to drive the fan 51 in this way, the inside of the device is cooled quickly, and by continuing the heating by the catalyst heater 61, the odor component is prevented from being discharged out of the device as it is. Then, when the temperature detected by the temperature sensor 13 falls to 60 ° C. or less (S9: YES), the fan motor 52 and the catalyst heater 61 are turned off (S10), the display time is flashed, and the processing tank 20 is not set. Notify that there is (S
11).

On the other hand, if the time T is 6 minutes or more in step 7 (S7: YES), it is determined that the processing tank 20 is set, and the drying processing is continued. In step 6, even when the detected temperature is higher than 60 ° C. (S6: NO), the drying process is continued without determining the hot start and determining the presence or absence of the processing tank. Here, the reason why the determination of the presence or absence of the processing tank is not performed in the case of the hot start is that the time from the rise is short, the temperature gradient is hardly stabilized, and accurate detection cannot be expected.
In particular, if the temperature Ts detected by the temperature sensor 13 already exceeds 100 ° C. at the start of operation, it is necessary to wait until the detected temperature Ts once drops to 100 ° C. or less, which takes extra time. . Therefore, the usability is improved without determining the presence or absence of the processing tank.

In the drying process, when the temperature Ts detected by the temperature sensor 13 rises to 145.degree.
Is turned off, and ON / OFF control is performed such that the drying heater 11 is turned on when the detected temperature Ts falls to 135 ° C. (S12). Then, the temperature in the processing tank 20 is made uniform by stirring the air in the processing tank 20 by the rotation of the fan 51, and the temperature of the garbage in the processing tank 20 is reduced by 12 °.
Keep around 0 ° C. The heated steam and the odorous component flow below the processing tank 20 through the gap between the processing tank 20 and the inner body 30, are reheated, are oxidized and deodorized by the catalyst unit 60, and are discharged outside the apparatus.

When the drying time is over (S13: YE
S), only the drying heater 11 is turned off (S14), and "0" is displayed on the display section 81 (S15). Then, the operation is continued with the fan motor 52 and the catalyst heater 61 turned on as they are, so that the inside of the device is quickly cooled and the odor components are oxidized, 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 of the drying heater 11 is stopped is equal to the fan motor 5.
2 also becomes shorter than the cooling time (Tb) when stopping. After that, the temperature Ts detected by the temperature sensor 13 becomes 60
At the time when the temperature falls to below ℃ (S16: YES), the fan motor 52 and the catalyst heater 61 are turned off (S17), the display 81 is turned off, and the operation is stopped (S18). By lowering the detected temperature Ts to 60 ° C. or less in this manner, the handle 21 of the processing tank 20 becomes about 40 ° C.,
It is a safe temperature.

As described above, according to the kitchen waste treatment machine of the present embodiment, the temperature Ts detected by the temperature sensor 13 is 10
The presence or absence of the processing tank 20 is determined based on the time T required for the temperature to rise from 0 ° C. to 140 ° C., and when it is determined that the processing tank 20 is not present, the heating operation is stopped and the notification is performed. It is possible to prevent the life of the device from being shortened or a failure due to the continued heating operation without the device. Further, since there is no need for a configuration such as a switch for judging the presence or absence of the processing tank 20, the cost related to the configuration for detecting the processing tank can be reduced. Further, when the detected temperature Ts of the temperature sensor 13 at the start of the operation is higher than 60 ° C., the drying process is continued without judging the presence or absence of the processing tank 20, so that the processing tank 20 is set. Since it is possible to prevent such a problem that the drying process is stopped because it is determined that there is no processing tank, the usability is good. In addition, even after it is determined that the processing tank 20 is not present and the heating operation by the drying heater 11 is stopped, the temperature of the processing tank 20 can be quickly reduced by continuously driving the fan 51 and the catalyst heater 61. In this case, it is possible to prevent the odor component from being discharged out of the device. Further, by reporting the abnormality when the temperature Ts detected by the temperature sensor 13 falls to 60 ° C. or lower, it is possible to prevent the user from being burned by hot air when the lid 41 is opened.

When the drying time is over, the drying heater 11
The fan 51 and the catalyst heater 61 are continuously driven even after the heating operation by the
In this case, it is possible to prevent the odor component from being discharged out of the apparatus. Further, by turning off the time display on the display unit 81 when the temperature Ts detected by the temperature sensor 13 falls to 60 ° C. or less, the temperature of the processing tank 20 is sufficiently lowered when the user determines the end of the drying process. Can prevent the danger of burns.

In the kitchen garbage disposer of this embodiment, the temperature sensor 13 is provided at a position for detecting the temperature of the lower surface of the processing tank 20. However, the temperature sensor 13 is not limited to this. A configuration for detecting the ambient temperature in the processing tank by providing it on the back side may be used. Even with this configuration, if you forget to set the processing tank, the radiant heat from the heater will not be interrupted by the processing tank and will easily be transmitted directly to the temperature sensor. can do. Further, the detection of the presence or absence of the processing tank is not necessarily limited to the structure in which the heater and the temperature sensor are interrupted by the presence or absence of the processing tank. With such a structure, the difference in the temperature gradient becomes remarkable. This leads to such an effect. Even in the case of not having such a structure, when the processing tank is set, the temperature gradient varies depending on the heat capacity, so that it is possible to determine the presence or absence of the processing tank. Therefore, the lower surface of the processing tank may be flat, and the position of the heater is not limited to the lower part of the processing tank.

In this embodiment, the presence or absence of the processing tank 20 is determined based on the time T required for the detected temperature to rise from 100 ° C. to 140 ° C. However, the present invention is not limited to this. The determination may be made based on the range. By determining in a low temperature range, the time until it is determined that there is no processing tank can be shortened. Further, in order to make the determination at that time accurate, an outside air temperature sensor for detecting the outside air temperature may be provided, and the criterion may be changed according to the detected temperature. Further, the presence or absence of the processing tank may be determined not only by the time required to increase from the predetermined temperature to the predetermined temperature but also by, for example, the temperature rising within a predetermined time from a certain detected temperature.

In this embodiment, the presence or absence of the processing tank 20 is not determined in the case of a hot start. However, the determination of the presence or absence of the processing tank may be always performed.

In this embodiment, the ON / OFF control of the fan motor 52 and the catalyst heater 61 is commonly performed. However, the present invention is not limited to this. For example, after the heater is stopped, the fan motor 52 is driven. Only may be continued. By doing so, the cooling of the device can be made faster.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0034]

As described above in detail, according to the garbage disposer of the present invention, the fan is driven until the temperature detected by the temperature detecting means becomes a predetermined value or less even after the heating control of the heater is completed, and the fan is stopped. Thereafter, by lowering the temperature of the treatment tank to a temperature that does not cause burns, burns of the user can be prevented, which is safe. Further, by driving the fan, it is possible to shorten the time required for the temperature of the processing tank to become equal to or lower than a predetermined value, so that it is convenient to use. Further, since the temperature detected by the temperature detecting means is used as a criterion, it can be accurately determined that the temperature of the processing tank has dropped to a temperature at which no burn is caused.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a kitchen waste disposal machine as one embodiment.

FIG. 2 is a perspective view of a processing tank.

FIG. 3 is a sectional view of a processing tank.

FIG. 4 is an external view of a kitchen waste disposal machine.

FIG. 5 is an external view of a kitchen waste treatment machine.

FIG. 6 is an explanatory diagram of an operation panel.

FIG. 7 is a flowchart illustrating a control process performed by a controller.

FIG. 8 is a graph showing a relationship between a temperature detected by a temperature sensor and time.

FIG. 9 is a graph showing a relationship between a temperature detected by a temperature sensor and time.

[Explanation of symbols]

11: drying heater, 13: temperature sensor, 20: processing tank, 51: fan, 61: catalytic heater.

Claims (1)

[Claims] 1. A processing tank for storing garbage such as garbage, a casing for storing the processing tank, a lid that opens and closes to put the processing tank in and out of the casing, and heats the garbage in the processing tank. A heater for convection of the air in the processing tank during a heating operation by the heater; a temperature detecting means for directly or indirectly detecting the temperature of the garbage in the processing tank; A garbage disposer having heating control means for controlling the heating operation of the heater based on the temperature detected by the detecting means, wherein the drive of the fan is continued even after the end of the heating control by the heating control means; A garbage disposal machine wherein the drive of the fan is stopped when the temperature detected by the means drops to a predetermined value or less.